CN108360652A - floating seal floor drain - Google Patents

Abstract

The present invention provides a kind of floating seal floor drains, including upper floor drain body and lower floor drain body, head cover and float valve；The top of the upper floor drain body is equipped with head cover, and the lower part of the lower floor drain body is equipped with water outlet；Side intersection location is equipped with upper convex edge in the upper floor drain body and lower floor drain body, and the lower floor drain body is equipped with lower convex edge with intersection location on the inside of water outlet；The upper float valve is set to inside floor drain, is covered in upper convex edge top, the lower float valve is set to inside floor drain, is covered in lower convex edge top.For the present invention using new principle, new construction, component is few, reliable operation, blowdown are unimpeded, easy care, can prevent sewer pest and disease damage and poisoning intrusion；Long period after hull-borne and draining, the partition interior space and sewer intracavity space, avoid sewer foul atmosphere from invading, and when being in dry state, can control the invasion of sewer foul atmosphere.

Description

Floating floor drain

technical field

The invention relates to a novel floor drain, in particular to a floating seal floor drain which is deodorizing, insect-proof, block-proof, unobstructed and easy to maintain.

Background technique

The floor drain is an important part that connects the room with the sewer and is embedded on the ground. It is not only the outlet for kitchen and bathroom floor sewage to be discharged outdoors to keep the kitchen and bathroom floors hygienic; it is also the entrance for sewer dirty air, pests, and viruses to invade indoors, which brings the problem that the indoor environment is affected by the sewer.

At present, floor drain technologies to prevent polluted air in sewers and pests and diseases from invading indoors can be classified into two categories, one is water-sealing technology, and the other is self-sealing technology. Correspondingly, the floor drains on the market are divided into two types, one is a water-sealed floor drain, and the other is a straight-through self-sealing floor drain.

The structural commonality of water-sealed floor drains is to form a U-shaped inlet in the floor drain, set the sewage outlet in the middle, and set a water-seal button above the sewage outlet. The water-seal button bell is an upside-down small bowl suspended in the air. Between the lower edge of the water-sealed buckle bell and the inner surface of the water-sealed floor drain is a direct channel between the inner cavity of the sewer and the indoor space. The basic principle of water seal technology is to intercept part of the sewage in the inlet, use the sewage to separate the indoor space from the inner space of the sewer, cut off the connection between the indoor air and the air in the inner cavity of the sewer, and prevent the dirty air, pests, and viruses from the sewer from entering the room. invasion.

When there is sewage falling down, the inlet of the floor drain intercepts part of the falling sewage to form a water seal. If the water surface of the water seal is at or higher than the immersion height (the height from the plane where the bottom of the inlet is to the plane where the lower edge of the water seal bell is located), the lower edge of the water seal bell will be submerged in the water seal. The main body of the floor drain is bonded together with the floor, and the outer wall of the sewer is bonded together with the floor. Under the condition that the water seal tape is immersed in the lower edge of the water seal bell, the main body of the floor drain, the water seal belt and the water seal bell cooperate with each other to separate the indoor space from the inner cavity of the sewer, and block the passage of dirty air from the sewer to invade the indoor air through the floor drain. The amount of water in the water-sealed ground leak bay is different, and the time for the water surface of the water-sealed belt to drop below the lower edge of the water-sealed bell is different, ranging from a few hours to a few days.

Under the condition that the water sealing tape cannot submerge the lower edge of the water sealing buckle or there is no water in the inlet, the inner cavity of the sewer is directly connected with the indoor space. The dirty air from the sewer will directly invade the room through the floor drain, and various pests and viruses will also drive straight in, directly endangering people's physical and mental health. This is the common deficiency of water-sealed floor drains. In addition, the leakage bay of the water-sealed floor is small, and the duration of isolating the indoor space and the inner cavity of the sewer is short; the leakage bay of the water-sealed floor is large, and the stains are deposited, and the sewage is easy to become smelly, forming a new source of pollution.

The structural commonality of the self-sealing floor drain is that the valve plate separates the inner cavity of the floor drain drain pipe and the inner cavity of the sewer, forming a barrier that isolates the inner cavity of the sewer and the indoor space. There are various styles of valve plates, and the corresponding principle details have their own characteristics. The existing eccentric block type floor drains, spring type floor drains, silicone type sealed floor drains, gravity mechanical lever type floor drains, T-type floor drains with two magnets attracting each other, T-type floor drains with positive and negative magnetic pole synchronization, etc. all adopt valve separation technology An example of a straight-through self-sealing floor drain. The difference lies in the different styles of valve plates, different ways to drive the valve to close, and different structures.

The basic principle of the self-sealing technology is to install a valve plate in the floor drain to isolate the indoor space from the inner cavity of the sewer. When there is no sewage, the valve is closed on the valve seat; when there is sewage, the gravity of the sewage makes the valve open, and the sewage flows through the gap between the valve and the valve seat. When the sewage stops falling and the opening force of the sewage acting on the valve plate is smaller than the closing driving force on the valve plate, the valve plate closes on the valve seat again.

When sewage starts to fall, the valve plate, valve seat, and sewage will form a barrier; during the discharge of sewage, this barrier will continue to exist. It separates the indoor space from the inner space of the sewer, and the passage of dirty air from the sewer invading the indoor air through the floor drain is blocked, and the possibility of pests and viruses invading the room is eliminated. When the sewage stops falling and the valve plate is closed on the valve seat again, as the residual water between the valve plate and the valve seat disappears, this barrier no longer exists.

There is an inherent gap between the disc and the seat. This gap is a straight-through passage for the interior space to communicate with the inner cavity of the sewer. It's just that its area is smaller than that of the sewage outlet. The function of the valve plate is to make the connecting channel between the indoor space and the inner cavity of the sewer change from a large diameter to a small diameter, so the valve plate separation technology is an air flow throttling technology. In addition to the sewage discharge process and the short-term residual water evaporation process, the indoor space and the sewer inner cavity space are constantly separated.

What falls down through the floor drain is sewage, which is mixed with filaments such as hair, particles such as sand and gravel, and dust stains dissolved in water. After the sewage is discharged, there will be filaments, particles, dust and stains sticking to the valve plate and valve seat; during the sewage discharge process, there is a possibility that the filaments will wrap around the valve plate and other mechanical parts, thereby affecting the closure of the valve plate. Whether it is filaments, particles, dust stains adhered to the valve plate, valve seat, or the closure of the valve plate is affected, the inherent gap between the valve plate and the valve seat will become larger. In addition, the straight-through type self-sealing floor drain has a complex structure, high component failure rate, and inconvenient maintenance.

From the current point of view, neither the water sealing technology nor the self-sealing technology can achieve the continuity of the sewer space and indoor space partition. The problem of sewer dirty air invading indoor air often exists, and the phenomenon of pests and viruses driving directly into the room continues to occur. The difference between the two lies in the duration of the isolation between the indoor space and the sewer inner cavity; when the indoor space is directly connected to the sewer inner cavity, the amount of sewer air entering the indoor space per unit time is different, and pests and viruses drive straight in. Indoor possibilities vary.

Therefore, how to deodorize and prevent insects is a problem that needs to be solved in the research of floor drains, leading the research direction of floor drains in the future; how to realize reliable and easy maintenance of floor drains is the focus of future research and development of floor drains.

Contents of the invention

The purpose of the present invention is to provide a floating seal floor drain to solve the above-mentioned problems existing in the current floor drain.

In order to achieve the above object, the concrete technical scheme that the present invention takes is:

A floating seal floor drain, comprising an upper floor drain body and a lower floor drain body, a top cover, and a float valve, the float valve is set as an upper float valve and a lower float valve; the upper part of the upper floor drain body is provided with a top cover, and the lower floor drain body The lower part of the water outlet is provided with a water outlet; the intersection position of the upper floor drain body and the inner side of the lower floor drain body is provided with an upper convex edge of a certain height, and the intersection position of the lower floor drain body and the inner side of the water outlet is provided with a lower convex edge of a certain height; The upper float valve is arranged inside the floor drain and covered on the upper part of the upper convex edge, and the lower floating valve is arranged inside the floor drain and covered on the upper part of the lower convex edge.

Further, the upper floor drain body and the lower floor drain body are smoothly connected to form an integrated structure, and the two can also be a separate structure.

Further, the upper convex edge is smoothly connected with the upper floor drain body and the lower floor drain body to form an integrated structure.

Further, the lower convex edge is smoothly connected with the lower floor drain body and the water outlet to form an integrated structure.

Further, the upper convex edge and the inner side of the upper floor drain body form an upper residual water tank.

Further, the lower convex edge and the inner side of the lower floor drain body form a residual water tank.

Further, the floating valve is a structure that can float in the drain flow or stagnant water body under the floor drain.

Further, the float valve is divided into two types: hollow core structure and solid core structure.

Further, the upper part of the float valve is provided with a limit protrusion, which is used for vertical limit and floating attitude control, and prevents the float valve from being tilted and locked; and the side of the float valve is also provided with a limit protrusion, which is used for horizontal position Control to ensure smooth flow of water.

Further, the float valve is divided into two types: a convex float valve and a concave float valve.

Further, the top cover is a plate-shaped structure capable of passing water, and is generally selected as a porous, plate-shaped structure.

Further, both the upper floor drain body and the lower floor drain body are cylindrical structures, and the inner diameter of the lower floor drain body is smaller than the inner diameter of the upper floor drain body. The tubular structure is only one of the structural forms, and the structural form realized by the present invention is not limited to this structure.

Further, the structure formed by the floating valve, the upper floor drain body and the raised edge is used to reduce the cross-sectional area of the communication channel between the upper and lower spaces of the floating valve.

Further, the structure formed by the lower floating valve, the lower floor drain body and the lower convex edge is used to reduce the cross-sectional area of the communication channel between the upper and lower spaces of the lower floating valve.

Further, the structure formed by the upper floating valve, the upper floor drain body and the upper convex edge, and the structure formed by the lower floating valve, the lower floor drain body and the lower convex edge, the air chamber formed between the two structures can effectively Block the gas from entering the room.

Further, the water flowing through the floating-sealed floor drain and the water stagnant in the upper and lower tanks are used to isolate the upper and lower spaces of the floating valve and block the circulation of gas, which has functionality.

Further, the floating valve, the upper floor drain body, the raised edge, the flowing water or the water stagnant in the upper remaining water tank can isolate the space above and below the floating valve.

Further, the formation of the lower floating valve, the lower floor drain body, the lower convex edge, the flowing water or the water stagnant in the remaining water tank can isolate the upper and lower spaces of the lower floating valve.

Further, the structure formed by the upper floating valve, the upper floor drain body, the upper convex edge, the flowing water or the water stagnant in the upper residual water tank, and the lower floating valve, the lower floor drain body, the lower convex edge, the flow The structure formed by the passing water flow or the water stagnant in the remaining water tank. The fully enclosed air chamber formed between the two structures forms a double-layer partition between the indoor space and the inner space of the sewer.

Further, the structure formed by the upper floating valve, the upper floor drain body, the upper convex edge, and the water stagnant in the upper sewage tank is connected with the lower floating valve, the lower floor drain body, the lower convex edge, and the water body trapped in the lower sewage tank. The structure formed by the water body in the previous structure, the water evaporation process of the stagnant water body in the previous structure determines the duration of the double-layer partition state between the indoor space and the sewer inner cavity space.

Further, the structure formed by the upper floating valve, the upper floor drain body, and the upper convex edge, and the structure formed by the lower floating valve, the lower floor drain body, the lower convex edge, and the water stagnant in the lower sewage tank, the latter The water evaporation process of the stagnant water body in the structure determines the duration of the lower partition state after the double-layer partition state between the indoor space and the inner space of the sewer. The lower closed air chamber formed between the two structures prevents the evaporation of water and prolongs the duration of the lower cut-off state.

To sum up, the present invention can realize the continuous and effective partition between the sewer space and the indoor space.

Advantages and beneficial effects of the present invention:

The basic structure of the present invention is the upper and lower two-layer floating valve structure, through which the air chamber is constructed to isolate the air in the chamber and the sewer, thereby improving the basic performance of the floor drain.

The floating seal floor drain provided by the present invention innovates the floor drain technology, applies a new design scheme, and based on a new structure and new principle, realizes the performance improvement of the floor drain, as follows:

1. Prevent or control the invasion of dirty air in sewers. Separate the indoor space from the inner cavity of the sewer, and prohibit the dirty air in the inner cavity of the sewer from passing through the floating floor drain; or make the indoor space and the sewer space indirectly connected to reduce the amount of sewer air pollution components entering the room through the floating floor drain.

2. Prevent sewer pests and viruses from invading.

3. Discharge sewage. Drain floor sewage into the sewer.

4. Self-cleaning and anti-blocking. Flush the remaining water tank with the help of the falling water, remove the sediment, and take away the particles and filaments.

5. After a drain, the air chamber of the floor drain remains up, down or completely closed for a long time. In theory, its time to keep the partition is equivalent to dozens of times that of the existing floor drain. Therefore, the floating-sealed floor drain that guarantees normal use can realize the partition between the inner cavity space of the sewer and the indoor space. In the cut-off state, the possibility of dirty air in the sewer cavity entering the room through the floor drain is eliminated.

6. In the open state of the floor leak air chamber, the number of sewer air pollution components entering the room is greatly reduced. In theory, it is only equivalent to one tenth of the directly connected floor drain.

7. The floating floor drain can prevent pests from invading the room, and eliminate the harm of sewer pests and viruses to human health.

8. The floating-sealed floor drain adopts water flow guidance technology, which is beneficial for the water flow to take away the hair and other filaments entering the floor drain, and is conducive to the water flow to wash away the sediment of the last drainage, ensuring smooth sewage discharge.

9. Floating seal floor drain technology has few components, reliable operation and simple maintenance.

Description of drawings

Fig. 1 is the main structure 1 of the floor drain of the present invention.

Fig. 2 is the main structure 2 of the floor drain of the present invention.

Fig. 3 is structure one of the float valve of the present invention.

Fig. 4 is the second structure of the float valve of the present invention.

Fig. 5 is a sectional view of the overall structure of the present invention.

FIG. 6 is a structural diagram of the concave float valve in Embodiment 1. FIG.

FIG. 7 is a structural diagram of the convex float valve in Embodiment 1. FIG.

FIG. 8 is a schematic diagram of the configuration of the variable air leakage chamber in Embodiment 2. FIG.

FIG. 9 is a schematic structural diagram of top-covering fit in Embodiment 2. FIG.

FIG. 10 is a schematic structural diagram of the bottom-covering fit in Embodiment 2. FIG.

Fig. 11 is a schematic diagram of the status of the floating floor drain barrier in Embodiment 2.

Fig. 12 is a schematic diagram of the composition and evolution of the dry floor drain drainage variable floor leakage chamber in Embodiment 2.

Fig. 13 is a schematic view showing the evolution of the secondary drainage variable air leakage chamber in embodiment 2.

Fig. 14 is a schematic diagram of the structure of the upper and lower top-covered floating-sealed floor drains in Embodiment 2.

Fig. 15 is a schematic diagram of the structure of the upper-top-bottom-type floating-sealed floor drain in Example 2.

Fig. 16 is a schematic diagram of the structure of the upper bottom and lower top floating seal floor drain in embodiment 2.

Fig. 17 is a schematic diagram of the structure of the upper and lower bottom-covered floating-sealed floor drains in Embodiment 2.

Among them, 1-upper floor drain body, 2-lower floor drain body, 3-upper convex edge, 4-water outlet, 5-float valve, 6-limiting protrusion, 7-top cover, 8-upward float valve, 9-lower float Valve, 10-lower convex edge, 11-upper residual water tank, 12-lower residual water tank.

Detailed ways

The present invention will be further explained and described below through specific embodiments in conjunction with the accompanying drawings.

Example 1:

As shown in Figure 1-3 and Figure 5, a floating seal floor drain includes an upper floor drain body 1 and a lower floor drain body 2, a top cover 7, and a float valve 5, the float valve 5 is set as an upper float valve 8 and a lower float valve 9 ; Wherein, the upper floor drain body 1 and the lower floor drain body 2 are cylindrical structures, and the diameter of the lower floor drain body 2 is smaller than the diameter of the upper floor drain body 1, and the upper part of the upper floor drain body 1 is provided There is a top cover 7, and the bottom of the lower floor drain body 2 is provided with a water outlet 4, and the water outlet 4 is also a cylindrical structure, and its diameter is less than the diameter of the lower floor drain body 2; the upper floor drain body 1 and the lower The intersecting position of the inner side of the floor drain body 2 is provided with a certain height, circular-shaped upper convex edge 3, and the intersecting position of the lower floor drain body 2 and the inner side of the water outlet 4 is provided with a certain height, circular-shaped lower convex edge 10; The upper float valve 8 is arranged inside the floor drain and covers the upper part of the upper ledge 3 , and the lower float valve 9 is arranged inside the floor drain and covered on the upper part of the lower ledge 10 .

As shown in FIG. 5 , the upper floor drain body 1 and the lower floor drain body 2 are smoothly connected to form an integrated structure.

As shown in FIG. 5 , the upper convex edge 3 is smoothly connected with the upper floor drain body 1 and the lower floor drain body 2 to form an integrated structure.

As shown in FIG. 5 , the lower convex edge 10 is smoothly connected with the lower floor drain body 2 and the water outlet 4 to form an integrated structure.

As shown in FIG. 5 , the upper convex edge 3 and the inner side of the upper floor drain body 1 form an upper residual water tank 11 .

As shown in FIG. 5 , the lower convex edge 10 and the inner side of the lower floor drain body 2 form a residual water tank 12 .

As shown in FIG. 3 , a limiting protrusion 6 is provided on the upper part of the float valve 5 .

As shown in Figures 6 and 7, the float valve 5 is divided into two types: a convex float valve and a concave float valve, and then it cooperates with the convex edge in different ways.

Example 2:

This embodiment further illustrates the present invention by explaining the principle of the invention and the specific working process in detail.

A floating floor drain barrier is arranged inside the floating seal floor drain, and a floor leak air chamber is constructed between the two floor drain barriers. Use the floor leak air chamber to block or control the convection exchange between indoor air and dirty air in the sewer to prevent dirty air, diseases and insect pests from invading the room; build a sewage drainage channel to achieve self-purification.

For the convenience of expression, the structure combining the floating floor drain and the floor is called the main body of the floating floor drain. The surface on the side where it combines with the wall is called the outer surface of the floating seal floor drain, the surface on the side where the diversion sewage flows down is the inner wall of the floating seal floor drain, the upper surface of the top is the embedded surface of the permeable roof, and the lower surface of the bottom is the sewage outlet surface; it is called permeable. The plane where the points on the embedded surface of the top cover combined with the permeable top cover is the upper plane of the floor drain main body, and the plane where the points at the bottom of the sewage discharge outlet are located is the bottom plane of the floor drain main body.

1.1 Floatable floor drain barrier

The floating floor drain barrier refers to the upper and lower space isolation barrier inside the floor drain formed on the basis of the cooperation of the floor drain residual tank and the float valve.

1.1.1 Remaining sink, valve seat

The remaining water tank is a groove-shaped structure formed by the inner wall of the main body of the floor drain shrinking inward, protruding upward, shrinking inward again, and descending vertically. Among them, the raised structure formed by protruding upwards, shrinking inwards, and descending vertically is called the inner edge of the residual water tank. In terms of design, ensure that all points at the bottom of the residual water tank are on the same plane, and all points along the top of the residual water tank are on the same plane; both planes are parallel to the upper plane of the main body of the floor drain. The remaining water tank is located inside the floating seal floor drain and is an annular tank.

For the convenience of expression, the plane where the points at the bottom of the residual tank are called the bottom plane of the residual tank, the plane where the points along the top of the residual tank are located is the plane along the top of the residual tank, and the vertical distance from the top plane of the internal edge of the residual tank to the bottom plane of the residual tank is the depth of the residual water tank; it is called the collection of points at the bottom of the residual water tank that can be in contact with the float valve, or the collection of points along the top of the residual water tank that can be in contact with the float valve is the valve seat.

For ease of distinction, each point of the valve seat is referred to as the residual water tank along the top of the top type residual water tank, and each point of the valve seat is the residual water tank at the bottom of the residual water tank as the bottom type residual water tank.

1. 1.2 Float valve

The float valve is a structure that can be placed on the valve seat, cooperate with each other to minimize the gap between the contact surfaces, and float in the water inside the floor drain. Its surface is a smooth curved surface, which is divided into upper curved surface, peripheral curved surface and lower curved surface. The upper curved surface is partially convex, and all points on the top are on the same plane; the lower curved surface is concave in the middle and convex around, the concave part is a plane, and the convex part is an arc surface. (As shown in Figure 3)

For the convenience of expression, the plane where the points on the top of the upper curved surface are located is called the top plane of the float valve, and the plane formed by the concave points in the middle of the lower curved surface is called the concave plane of the bottom of the float valve. In terms of design, the lowermost points of the convex arc surface around the lower curved surface are located on the same plane, which is called the bottom plane of the float valve. In terms of design, ensure that the top plane of the float valve, the bottom plane of the float valve, and the concave plane of the bottom of the float valve are parallel to each other. The vertical distance between the top plane of the float valve and the bottom plane of the float valve is called the height of the float valve, and the vertical distance between the concave plane of the bottom of the float valve and the bottom plane of the float valve is called the concave depth of the valve bottom.

For the convenience of distinction, the float valve whose point on the concave plane at the bottom of the float valve is in contact with the valve seat is called a concave float valve (Figure 6); the float valve whose point on the raised arc surface around the float valve is in contact with the valve seat is called Convex float valve (Figure 7).

1. 1. 3 sewage ring

The sewage ring refers to the ring-shaped water body formed by the accumulation of sewage in the residual tank. The surface of the water body exposed to the air inside the floor drain is called the sewage annulus, and the horizontal part of the sewage annulus is the sewage annulus level. When sewage enters the floor drain, a sewage ring begins to form; as the sewage continues to accumulate, the sewage ring gradually increases; when the level of the sewage ring is higher than the inner edge of the residual water tank, the sewage begins to fall across the inner edge of the residual water tank. During the discharge of sewage, the sewage ring changes with the change of water inflow and discharge. When there is no more sewage entering the floor drain, the sewage falling stops thereupon. Thereafter, the sewage ring gradually decreases as the water evaporates. If no sewage re-enters the waste tank, the sewage ring will eventually disappear.

For the convenience of expression, the sewage ring whose water level is lower than that along the top plane in the residual water tank is called the residual water ring. The corresponding sewage ring surface is the remaining water ring surface, and the corresponding sewage ring level is the remaining water ring level. The residual water ring existing in the process of sewage entering the residual water tank is called an increasing residual water ring; the residual water ring without sewage entering is called a gradually diminishing residual water ring.

For the convenience of expression, the sewage ring whose water level is higher than that along the top plane in the residual tank is called the drain ring. The corresponding sewage ring surface is the water discharge ring surface, and the corresponding sewage ring water surface is the water discharge ring water surface. The discharge ring that exists at the stage where the sewage crosses the residual tank and begins to fall along the top plane is called an incremental discharge ring; the discharge ring that gradually reduces the sewage that passes through the residual tank along the top plane to the stage where there is no more sewage discharge is called the discharge ring It is the gradual elimination of the water ring; the water ring existing between the above two stages is called the continuous water ring.

For a sewage discharge, the existence cycle of the sewage ring is divided into: the formation and increase period of the residual water ring, the formation and increase period of the increasing discharge water ring, the existence period of the continuous discharge water ring, the decrease and disappearance period of the gradual disappearance water ring, The period of fading residual water ring decreases and disappears.

1. 1. 4 Float valve and seat fit

The coordination between the float valve and the valve seat is divided into two situations: one is the floating valve coordination, and the other is the seating coordination of the floating valve.

When the water level of the sewage ring is higher than the bottom plane of the seated floating valve, the lower part of the floating valve begins to immerse in the sewage; the sewage begins to generate buoyancy on the floating valve. When the buoyancy force is greater than the gravity of the float valve, the float valve floats; when the sewage decreases so that the buoyancy force is less than the gravity of the float valve, the float valve re-seats.

For the convenience of expression, the sewage ring when the buoyancy generated by the sewage on the float valve is equal to the weight of the float valve is called the fit sewage ring, and the vertical distance from the bottom plane of the residual tank to the level of the fit sewage ring is called the fit height; the level of the sewage ring is said to be lower than the float valve The sewage ring on the bottom plane is an invalid sewage ring, and the sewage ring whose water level is higher than the bottom plane of the float valve is an effective sewage ring.

1. 1.4.1 Float coordination of float valve

The floating coordination of the float valve refers to the style in which the float valve is in a floating state under the action of buoyancy, and the upper and lower spaces of the float valve are separated by the float valve, sewage and residual water tank. With this cooperation, the float valve, sewage, and the residual water tank are integrally cut off the upper and lower spaces of the float valve. According to the different sewage rings of the floating valve, the floating coordination of the floating valve is divided into the floating coordination of residual water and the floating coordination of water discharge.

The residual water floating fit refers to a kind of float valve floating fit in which the float valve floats in the residual water ring. According to the difference of residual water ring, residual water floating coordination is divided into increasing residual water floating coordination and gradually disappearing residual water floating coordination.

The flooding floating fit refers to a kind of float valve floating fit in which the float valve floats in the draining water ring. According to the difference of the diarrhoea ring, the diarrhoea-floating coordination can be divided into increasing diarrhoea-floating coordination, continuous diarrhoea-floating coordination, and fading diarrhoea-floating coordination.

1. 1.4.2 Seat fit of float valve

The seat fit of the float valve refers to the style that the float valve sits under the dominance of gravity, and the upper and lower spaces of the float valve are separated by the float valve and the valve seat. When the float valve is seated, there is a contact gap between the float valve and the valve seat, which directly connects the upper and lower spaces of the float valve. For the convenience of expression, this gap is called the communication channel between the upper and lower spaces of the float valve.

According to the different contact parts between the float valve and the valve seat, the seat fit of the float valve is divided into top-cover fit and bottom-cover fit; according to whether the water level of the residual water ring is higher than the bottom plane of the float valve, the seat fit of the float valve is divided into float valve empty seat fit, Float valve dip fit.

The top-covering fit refers to the seat fit of the float valve, which tends to coincide with the concave plane at the bottom of the float valve and the top plane in the residual water tank during the seating process of the float valve. Top-covering type cooperation requires that the concave float valve cooperate with the top-type residual water tank; the recessed depth of the valve bottom is smaller than the depth of the residual water tank. With this cooperation, the communication channel between the upper and lower spaces of the float valve is the contact gap between the concave plane at the bottom of the float valve and the top of the residual water tank. (Figure 9)

Bottom-covered fit refers to the seated fit of the float valve in which the bottom plane of the float valve and the bottom plane of the residual tank tend to coincide during the seating process of the float valve. Bottom-covered matching requirements, the convex float valve is matched with the bottom-shaped residual water tank; the recessed depth of the valve bottom is greater than the depth of the residual water tank. With this cooperation, the communication channel between the upper and lower spaces of the float valve is the contact gap between the bottom plane of the float valve and the bottom plane of the residual water tank. (Figure 10)

The difference between the top-covered fit and the bottom-covered fit is that the matching position between the float valve and the residual water tank is whether the top of the residual water tank is used as the valve seat, or the bottom of the residual water tank is used as the valve seat of the float valve.

The empty seat fit of the float valve refers to the seat fit of the float valve when there is no sewage in the residual water tank, or although there is sewage, but the water level of the residual water ring is lower than the bottom plane of the seated float valve. With this cooperation, the communication channel between the upper and lower spaces of the float valve communicates with the upper and lower spaces of the float valve.

The immersion fit of the float valve refers to the seat fit of the float valve under the condition that there is sewage in the residual water tank and the water level of the residual water ring is higher than the bottom plane of the seated float valve. With this cooperation, the floating valve, sewage and residual water tank are integrated to cut off the space above and below the floating valve.

The difference between the float valve empty seat fit and the float valve immersed fit is whether the float valve is immersed in the residual water ring.

1. 1.5 Floatable floor drain barrier status

According to the different components and the differences in coordination between the float valve and the valve seat, the barrier status of the floating floor drain can be divided into four types: empty seat status, submerged status, remaining water floating status, and draining floating status. (Figure 11)

The empty seat state refers to the state in which the floating floor drain barrier is in when the cooperation between the float valve and the valve seat is the cooperation between the empty seat of the float valve. In this state, the components of the floating floor drain barrier are the residual water tank and the float valve, and the space above and below the float valve is communicated through the contact gap between the float valve and the valve seat. According to whether there is sewage in the residual water tank, the empty seat state is divided into the state of empty seat with water and the state of empty seat without water.

The immersion state refers to the state of the floating floor drain barrier when the coordination between the float valve and the valve seat is the immersion fit of the float valve. According to the different immersion fits of the float valve, the immersion state is divided into the immersion increasing state and the immersion fading state. The constituent elements of the floatable floor drain barrier in the state of increasing immersion are: residual water tank, floating valve, and increasing residual water ring; the constituent elements of the floating floor drain barrier in the state of immersion in the gradual disappearance state are: residual water tank, floating valve, and gradually diminishing residual water ring. In the immersed state, the space above and below the float valve is separated by a physical barrier formed by the float valve, sewage, and residual water tank.

The floating state of the remaining water refers to the state of the floating floor drain barrier when the cooperation between the float valve and the valve seat is the floating cooperation of the remaining water. According to the difference of the floating coordination of the remaining water, the floating state of the remaining water can be divided into a floating state of increasing residual water and a floating state of gradually decreasing residual water. The constituent elements of the floating floor drain barrier in the state of increasing surplus water are: residual water tank, floating valve, and increasing residual water ring; the constituent elements of the floating floor drain barrier in the state of gradually diminishing residual water are: residual water tank, floating valve, and gradually diminishing residual water ring. In the floating state of the remaining water, the space above and below the floating valve is separated by a physical barrier formed by the floating valve, sewage and the remaining water tank.

The flooding floating state refers to the state of the floating floor drain barrier when the cooperation between the float valve and the valve seat is the flooding floating cooperation. According to the difference of the flotation coordination of the diarrhoea, the flotation state of the diarrhoea is divided into the flotation state of increasing diarrhoea, the continual flotation state of diarrhoea, and the flotation state of fading water. The constituent elements of the floating floor drain barrier in the incrementally floating state of discharge water are: residual water tank, floating valve, and incremental discharge ring; the constituent elements of the floating floor drain barrier in the continuous floating state of discharge water are: residual water tank, floating valve, and continuous discharge ring; The constituent elements of the floating floor drain barrier in the state of fading water fading and floating are: residual water tank, floating valve, and fading water ring. In the floating state of the discharge water, the space above and below the float valve is separated by a physical barrier formed by the float valve, sewage and residual water tank.

When the sewage falls down, the sewage first fills the residual water tank, and then falls over the inner edge of the residual water tank. For a floating floor drain without sewage, from the time when the sewage starts to flow into the intercepted sewage, the change process of the barrier state of the floating floor drain is as follows: from the state of no water empty seat, to the state of water empty seat, the state of increasing immersion, and the remaining state The floating state of increasing water, the floating state of increasing water discharge, the continuous floating state of water discharge, and then to the floating state of water discharge gradually disappearing, the floating state of remaining water gradually disappearing, the state of immersion fading, the state of empty seat with water, and finally back to the state of no water Empty state. If the time interval is long enough, the water in the residual water tank can be completely evaporated, and then the sewage is discharged, and the above-mentioned cycle repeats itself. For the floor drain in normal use, the state of no water empty seat, the state of water empty seat, the state of remaining water gradually disappearing and floating, and the state of immersion and fading may be the initial state of the floating floor drain barrier in the drainage process.

1.2 Changeable air leakage chamber

The upper and lower layers of residual water tanks are built on the inner wall of the floating floor drain, and the floating valve is used to cooperate with it to form an upper and lower layer of floating floor drain barriers. The variable floor leakage chamber refers to a floor drain internal space formed by two layers of floatable floor drain barriers and a floating floor drain inner wall between the two barriers. It is an intermediate space between the indoor space and the inner cavity of the sewer. Its constituent elements include part of the inner wall of the main body of the floating seal floor drain, part of the lower surface of the upper floating valve, the upper surface of the lower floating valve and its surrounding surface, and part of the surface of the sewage ring. (Figure 5)

1. 2.1 The composition and evolution of the variable floor leakage chamber

The existence of the upper and lower sewage rings is different, the composition elements of the variable floor air leakage chamber are different, and the composition of the variable floor air leakage chamber is different. They are divided into 11 types, respectively A, B, C, D, E, F, G , H, I, J, K said.

A composition: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, the upper curved surface of the lower floating valve and its surrounding curved surfaces, and part of the lower curved surface of the lower floating valve.

Composition B: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, part of the surface of the upper residual water ring, the upper curved surface of the lower floating valve and its surrounding curved surfaces, and part of the lower curved surface of the lower floating valve.

C composition: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, part of the upper discharge ring surface, the lower residual water ring surface, the upper curved surface of the lower floating valve and its surrounding curved surfaces, and part of the lower curved surface of the lower floating valve.

D composition: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, part of the upper discharge ring surface, part of the lower residual water ring surface, the upper curved surface of the lower floating valve and part of its surrounding curved surface.

E composition: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, the upper discharge ring surface, part of the lower discharge ring surface, the upper curved surface of the lower floating valve and part of its surrounding curved surface.

F composition: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, part of the upper residual water ring surface, part of the discharge water ring surface, the upper curved surface of the lower floating valve and part of its surrounding curved surface.

G composition: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, part of the upper residual water ring surface, part of the lower residual water ring surface, the upper curved surface of the lower floating valve and part of its surrounding curved surface.

Composition H: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, part of the lower residual water ring surface, the upper curved surface of the lower floating valve and part of its surrounding curved surface.

I composition: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, the lower residual water ring surface, the upper curved surface of the lower floating valve and part of its surrounding curved surface, and part of the lower curved surface of the lower floating valve.

J composition: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, part of the surface of the upper discharge water ring, the surface of the lower remaining water ring, the upper curved surface of the lower floating valve and its surrounding curved surfaces, and part of the lower curved surface of the lower floating valve.

K composition: part of the inner wall of the main body of the floating seal floor drain, part of the lower curved surface of the upper floating valve, part of the surface of the upper residual water ring, the surface of the lower residual water ring, the upper curved surface of the lower floating valve and its surrounding curved surface, and part of the lower curved surface of the lower floating valve.

The upper and lower floatable floor drain barriers determine the variable floor leakage chamber. The upper and lower floatable floor drain barriers change, resulting in the change of the variable floor leak chamber, divided into 38 situations, with 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 , 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38. As shown in Figure 8,

Type 1: The upper and lower floating floor drain barriers are in an empty state without water. The changeable air leakage chamber is composed of A.

Type 2: The upper floatable floor drain barrier is in the state of having water empty seat, and the lower floatable floor drain barrier is in the state of no water empty seat. The changeable air leakage chamber is composed of A.

Type 3: The upper floatable floor drain barrier is in a state of increasing immersion, and the lower floatable floor drain barrier is in an empty state without water. The changeable air leakage chamber is composed of B.

Type 4: The upper floatable floor drain barrier is in a floating state with increasing residual water, and the lower floatable floor drain barrier is in an empty state without water. The changeable air leakage chamber is composed of B.

Type 5: The upper floatable floor drain barrier is in the state of increasing water discharge and floating, and the lower floatable floor drain barrier is in the state of having water and empty seats. The variable air leakage chamber is composed of C.

Type 6: The upper floatable floor drain barrier is in a state of continuous floating of water discharge, and the lower floatable floor drain barrier is in a state of increasing immersion. The changeable air leakage chamber is composed of D.

Type 7: The upper floatable floor drain barrier is in the continuous floating state of discharge water, and the lower floatable floor drain barrier is in the floating state of increasing residual water. The changeable air leakage chamber is composed of D.

Type 8: The upper floatable floor drain barrier is in the continuous floating state of discharge water, and the lower floatable floor drain barrier is in the state of increasing discharge and floating state. The variable leakage chamber is composed of E.

Type 9: The upper and lower floating floor drain barriers are in the continuous floating state of water discharge. The variable leakage chamber is composed of E.

Type 10: The upper floatable floor drain barrier is in the state of water discharge gradually disappearing and floating, and the lower floatable floor drain barrier is in the state of continuous water discharge and floating state. The variable leakage chamber is composed of E.

Type 11: The upper floatable floor drain barrier is in the floating state of the residual water fading away, and the lower floating floor drain barrier is in the floating state of the water fading away. The variable leakage air chamber is composed of F.

Type 12: The upper and lower floating floor drain barriers are in a floating state where the remaining water gradually disappears. The variable leakage chamber is composed of G.

Type 13: The upper floatable floor drain barrier is in a state of immersion and fading, and the lower floatable floor drain barrier is in a state of remaining water fading away. The variable leakage chamber is composed of G.

Type 14: The upper floatable floor drain barrier is in an empty state, and the lower floatable floor drain barrier is in a floating state where the residual water gradually disappears. The variable leak chamber is composed of H.

Type 15: The upper floatable floor drain barrier is in an empty state without water, and the lower floatable floor drain barrier is in a submerged and fading state. The variable leak chamber is composed of H.

Type 16: The upper floatable floor drain barrier is in the state of no water empty seat, and the lower floatable floor drain barrier is in the state of water empty seat. The variable leakage chamber is composed of I.

Type 17: The upper floatable floor drain barrier is in the state of having water empty seat, and the lower floatable floor drain barrier is in the state of no water empty seat. The changeable air leakage chamber is composed of A.

Type 18: The upper floatable floor drain barrier is in a state of immersion fading away, and the lower floatable floor drain barrier is in a state of no water and empty seats. The changeable air leakage chamber is composed of B.

Type 19: The upper floatable floor drain barrier is in the floating state where the residual water gradually disappears, and the lower floatable floor drain barrier is in the state of no water and empty seats. The changeable air leakage chamber is composed of B.

Type 20: The upper floating floor drain barrier is in a floating state where the water discharge gradually disappears, and the lower floating floor drain barrier has a water empty seat state. The variable leakage air chamber is composed of J.

Type 21: The remaining water in the upper floating floor drain barrier gradually disappears and floats, and the lower floating floor drain barrier has a water empty seat state. The variable leakage chamber is composed of K.

Type 22: The upper floatable floor drain barrier is in the state of immersion fading away, and the lower floatable floor drain barrier is in the state of water and empty seat; the changeable floor leakage chamber is composed of K.

Type 23: The upper and lower floating floor drain barriers have water empty seats. The composition of the leak chamber can be changed to I composition.

Type 24: The upper floatable floor drain barrier is in the state of effluent fading and floating, and the lower floatable floor drain barrier is in the state of immersion and fading. The changeable air leakage chamber is composed of D.

Type 25: The upper floating floor drain barrier is in the floating state of the remaining water fading away, and the lower floating floor drain barrier is in the immersion fading state. The variable leakage chamber is composed of G.

Type 26: The upper and lower floating floor drain barriers are immersed in a fading state. The variable leakage chamber is composed of G.

Type 27: The upper floatable floor drain barrier is in the state of fading water and floating, and the lower floatable floor drain barrier is in the state of remaining water fading away. The changeable air leakage chamber is composed of D.

Type 28: The upper and lower floating floor drain barriers are in a state where the remaining water is gradually disappearing. The variable leakage chamber is composed of G.

Type 29: The upper floatable floor drain barrier is in a state of immersion and fading away, and the lower floatable floor drain barrier is in a state of fading water. The variable leakage chamber is composed of G.

Type 30: The upper floatable floor drain barrier is in a floating state of increasing residual water, and the lower floatable floor drain barrier is in a state of immersion and fading away. The variable leakage chamber is composed of G.

Type 31: The upper floatable floor drain barrier is in the state of increasing immersion and floating, and the lower floatable floor drain barrier is in the state of immersion fading away. The variable leakage chamber is composed of G.

Type 32: The upper floatable floor drain barrier is in a floating state of increasing residual water, and the lower floating floor drain barrier is in a state of gradually disappearing residual water. The variable leakage chamber is composed of G.

Type 33: The upper floatable floor drain barrier is in a state of increasing immersion, and the lower floatable floor drain barrier is in a state of gradual disappearance of residual water. The variable leakage chamber is composed of G.

Type 34: The upper floatable floor drain barrier is in the state of empty water seat, and the lower floatable floor drain barrier is in the state of remaining water gradually disappearing. The variable leak chamber is composed of H.

Type 35: The upper floatable floor drain barrier is in a state of water empty seat, and the lower floatable floor drain barrier is in a state of immersion and fading. The variable leak chamber is composed of H.

No. 36: The upper and lower floating floor drain barriers are in the state of having water and empty seats. The variable leakage chamber is composed of I.

Type 37: The upper floatable floor drain barrier is in a state of increasing immersion, and the lower floatable floor drain barrier is in a state of water and empty seats. The variable leakage chamber is composed of K.

Type 38: The upper floatable floor drain barrier is in the state of increasing residual water, and the lower floatable floor drain barrier is in the state of water empty seat. The variable leakage chamber is composed of K.

The change of sewage escaping, sewage interception and existence determines the evolution of the structure of the variable floor leak air chamber. A dry floor drain starts from the floor sewage entering the floor drain to the sewage falling down, and then from the sewage stopping to draining until the floor drain dries up. If the amount of water flowing down is greater than the amount of water required to form the upper and lower remaining water rings in the two residual tanks, the composition of the air chamber of the floor drain will evolve. The rule is: gradually change from the first type to the sixteenth type, and then from the sixteenth type to the first type. If the amount of falling water is less than the amount of water required by the upper and lower residual water rings formed by the two excess water tanks, it may end in any of the 2nd, 3, 4, 5, 6, and 7 situations. Ended in the 2nd type, turned into the 17th type, and then changed back to the 1st type; ended in the 3rd type, changed into the 18th type, evolved into the 17th type, and then changed back to the 1st type; ended in the 4th type, Becomes the 19th type, gradually evolves into the 18th, 17th, and then changes back to the 1st type; ends at the 5th type, becomes the 20th type, then turns into the 21st or 25th type, and gradually evolves into Type 22, Type 23, Type 16, or gradually evolve into Type 26, Type 15, Type 16, and then change back to Type 1; end at Type 6, become Type 24, and then become Type 1 The 25th type gradually evolved into the 26th, 15th, 16th, and then changed back to the 1st type; ended at the 6th type, became the 27th type, then changed into the 28th type, and gradually evolved into the 29th type Type, Type 14, Type 15, Type 16, and then change back to Type 1. (Figure 12)

In the second discharge, the 1st, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th, 21st, 22nd, 23rd, 25th, 26th, 28th, 29th may be the next time the sewage enters the floating seal floor drain , the initial condition of the floor drain can be changed. Since then the composition of the leak chamber has evolved variably. (Figure 13)

1. 2.2 The state of the variable floor leak chamber and its changes

The variable state of the floor leak chamber refers to the communication state between the upper part of the floor leak chamber and the indoor space, and the lower part of the floor leak chamber and the inner cavity space of the sewer. According to the connection between the indoor space and the inner space of the sewer, the state of the changeable floor leak air chamber is divided into four types: open state, upper closed state, fully closed state, and lower closed state.

The open state refers to a changeable state of the air leakage chamber in which the upper part of the floor leakage chamber communicates with the indoor space through the upper and lower space communication channels of the floating valve, and the lower part communicates with the inner cavity of the sewer through the upper and lower space communication channels of the lower floating valve. When the upper and lower floatable floor drain barriers are in an empty state, the floor drain air chamber is in an open state.

The upper closed state refers to a state in which the upper part of the floor drain air chamber is separated from the indoor space by the upper floating floor drain barrier, and the lower part communicates with the inner cavity of the sewer through the upper and lower space communication channels of the lower floating valve. When the lower floatable floor drain barrier is in and the upper floatable floor drain barrier is not in an empty state, the floor drain air chamber is in an upper closed state.

The fully enclosed state refers to a state in which the upper part of the floor drain air chamber is separated from the indoor space by an upper floating floor drain barrier, and the lower part is separated from the sewer cavity space by a lower floating floor drain barrier. When the upper and lower floating floor drain barriers are not in an empty state, the floor drain air chamber is in a closed state.

The closed state of the lower part refers to a state in which the upper part of the floor drain air chamber communicates with the indoor space through the upper and lower space communication channels of the floating valve, and the lower part is separated from the sewer inner cavity space by the lower floating floor drain barrier. When the upper floatable floor drain barrier is in and the lower floatable floor drain barrier is not in an empty state, the floor drain air chamber is in a lower closed state.

The state of the variable floor leakage chamber changes with the change of the sewage falling and the intercepted sewage. From the dry state of the floor drain to the completion of a sewage discharge, and then to the dryness of the floor drain, the change law of the floor leak air chamber is: from an open state to an upper closed state, from an upper closed state to a fully sealed state, from a fully closed state to a closed state. The lower closed state is restored to the open state from the lower closed state.

For a dry drain with upper and lower floatable drain barriers, its upper and lower float valves sit on their respective valve seats. In this case, the variably leaky chamber is open. When there is sewage falling down, the upper residual water ring begins to form. As the water volume of the upper remaining water ring increases, the water surface of the upper remaining water ring continues to rise. When the water surface of the upper residual water ring is higher than the bottom plane of the upper floating valve, the upper floating floor drain barrier changes from an empty seat state to an immersed state, and the variable air leakage chamber changes from an open state to a lower open state. The water surface of the upper residual water ring continues to rise until the water surface of the residual water ring is higher than the top plane in the upper residual water tank, and the sewage begins to enter the lower residual water tank to form the lower residual water ring. When the water surface of the remaining water ring is higher than the bottom plane of the lower floating valve, the lower floating floor drain barrier changes from an empty seat state to an immersed state, and the variable air leakage chamber changes from a lower open state to a fully closed state. When the sewage stops falling, it enters the consumption period of the sewage ring. When the level of the upper sewage ring is lower than the bottom plane of the upper floating valve, the variable air leakage chamber changes from a fully closed state to a lower closed state; after that, when the level of the lower sewage ring is lower than the bottom plane of the lower floating valve, the variable air leakage chamber is changed from The closed state of the lower part becomes the open state.

1. 2.3 The relationship between the state and composition of the changeable floor leakage chamber

The state of the variable leak chamber corresponds to the composition of the variable leak chamber, and the state of the air chamber changes with the evolution of the composition of the air chamber.

The 1st, 2nd, 16th, 17th, 23rd, and 36th types of variable floor leakage chambers are composed, and the state of the variable floor leakage chamber is in an open state;

In the 3rd, 4th, 5th, 18th, 19th, 20th, 21st, 22nd, 37th, and 38th configuration of the variable air leakage chamber, the state of the variable air leakage chamber is in the upper closed state;

In the 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 24th, 25th, 26th, 27th, 28th, 29th, 30th, 31st, 32th, and 33 kinds of ground leakage chamber configurations, the ground leakage can be changed The room is fully enclosed;

In the 14th, 15th, 34th, and 35th configurations of the variable air leakage chamber, the variable air leakage chamber is in a closed state at the bottom.

1. 2.4 The function of the variable floor leakage chamber

The variable air leakage chamber is located between the indoor space and the inner space of the sewer, and is a transitional space that forms the connection between the indoor space and the internal control space of the sewer. When it is in an open state, it enables indirect communication between the indoor space and the sewer inner cavity space; when it is in an upper closed state, it makes the indoor space and the sewer inner cavity space indirectly separated by the upper floating floor drain barrier; When it is in a fully closed state, it makes the indoor space and the sewer inner cavity space separated by two floating floor drain barriers; when it is in the lower closed state, it makes the indoor space and the sewer inner cavity space separated by a lower floating floor drain barrier. Floor drain barrier indirect partition.

1. 2.5 Principle of variable floor leakage chamber

1. 2.5.1 Throttling block principle

The principle of throttling and blocking is to use the spatial connection characteristics of the floor leak air chamber to control the diffusion of dirty air components in the inner cavity of the sewer to the room, and to prevent pests and viruses from invading the room.

In the open state of the floor leak air chamber, the communication channel between the upper and lower spaces of the lower floating valve is the channel for gas convection between the sewer inner cavity and the floor leak air chamber space, and the dirty components in the air in the sewer inner cavity diffuse to the floor leak air chamber with the gas convection; the upper float valve The communication channel between the upper and lower spaces is the channel for gas convection between the air chamber space of the floor leak and the indoor space, and the dirty components in the air of the air chamber of the floor leak diffuse to the indoor space along with the air convection. The former increases the dirty components in the air of the floor leak air chamber, and the latter reduces the dirty components in the air of the floor leak air chamber.

After the floor leak chamber is in an open state for a period of time, the dirty components entering the floor leak chamber and the dirty components leaving the floor leak chamber will reach a certain degree of balance, and the concentration of the dirty components in the floor leak chamber will remain relatively stable. Its value is lower than the inner cavity of the sewer and higher than the indoor space near the floor drain. In theory, when the concentration of dirty components in the air in the sewer cavity is constant, the number of air convection entering the space with higher dirty components is lower than the number of entering spaces with lower dirty components. Thereby, the amount of air pollution components entering the sewer inner cavity per unit time is limited. Compared with a floating floor drain barrier or a straight-through type self-sealing floor drain barrier, the efficiency of restricting the dirty components in the sewer cavity from entering the room is improved.

Assuming that the gas convective exchange per unit area per unit time is a, the radius of the inner edge of the upper residual water tank is r _s , and the inner diameter of the floor leak air is the same as the inner diameter of the inner edge of the upper residual water tank, in the case of no floating valve, within time t , the gas exchange volume through the plane surrounded by the inner edge of the upper residual tank is ,but:

Assume that the average height of the clearance between the floating valve and the valve seat is , the amount of gas exchange through the gap between the floating valve and the valve seat is ,but:

Assuming that at the same time, the ratio of the gas exchange volume passing through the clearance of the floating valve to the plane enclosed by the inner edge of the upper residual tank is ,but:

Assume that the radius of the inner edge of the remaining tank is , and assuming that the inner diameter of the floor leakage air is the same as the inner diameter of the inner edge of the remaining water tank, in the absence of a floating valve, within time t, the gas exchange volume through the plane surrounded by the inner edge of the remaining water tank is ,but:

Assume that the average height of the gap between the floating valve and the valve seat is , the amount of gas exchange through the gap between the floating valve and the valve seat is ,but:

Assuming that at the same time, the ratio of the gas exchange volume passing through the gap of the float valve to the plane enclosed by the inner edge of the remaining tank is but:

In the open state of the air chamber of the floor drain, the float valve is seated. Compared to the size of the pests, the gap between the upper and lower space communication channels of the upper and lower float valves and the upper and lower space communication channels of the lower float valve is very small, and the passage of pests crawling into the room through the floor drain is cut off. The possibility of pests entering the room through the floor drain through two gaps is basically ruled out, and the possibility of viruses entering the room along with the pests is basically ruled out.

1. 2.5.2 Blocking principle

The principle of blocking is to use the space partition characteristics of the floor leak chamber to eliminate the possibility of the dirty air in the sewer cavity spreading to the room and prevent pests and viruses from invading the room. It is divided into upper sealing blocking, fully sealing blocking and lower sealing blocking .

The air chamber of the floor drain is in an upper closed state, and the sewage from the upper residual tank of the floating-sealed floor drain submerges the bottom plane of the upper floating valve. The air chamber space of the floor leak forms an upper closed block. It eliminates the possibility that dirty air components, pests and diseases in the inner cavity of the sewer enter the room through the floor leak air chamber.

The air chamber of the floor drain is in a lower closed state, and the sewage from the lower residual tank of the floating seal floor drain submerges the bottom plane of the lower floating valve. The space and the floor leak air chamber space form a closed block. It eliminates the possibility that dirty air components, pests and diseases in the inner cavity of the sewer enter the air chamber of the floor leak.

The air chamber of the floor drain is in a fully closed state. The sewage from the upper residual water tank of the floating seal floor drain submerges the bottom plane of the upper floating valve. Floor drain air chamber space; the bottom plane of the lower floating valve is submerged by the sewage from the remaining water tank, and the lower sewage ring, the lower floating valve and the lower remaining water tank cooperate to form a floating floor drain barrier without any air gap, which separates the inner space of the sewer from the air chamber of the floor drain space. It eliminates the possibility of dirty components in the sewer cavity, diseases and insect pests, etc. entering the floor leak chamber, and also eliminates the possibility that the dirty components in the floor leak chamber have entered the room.

The upper part of the floating floor drain barrier is connected to the indoor space, and the water in the upper sewage ring is easy to evaporate indoors, and the evaporation amount is related to the indoor air humidity; the lower part is connected to the floor drain air chamber, and the water in the upper sewage ring is not easy to leak to the floor Evaporation in the chamber is related to the high humidity in the air chamber of the floor leak. After the sewage stops pouring down, the duration of upper sealing and total sealing is determined by the retention time of the upper residual water ring, which is generally between several hours and tens of hours.

The upper part of the lower floatable floor drain barrier is connected with the air chamber of the floor drain, and the lower part is connected with the cavity space of the floor drain. In the fully closed state of the floor leak air chamber, the air humidity in the floor leak air chamber is close to saturation, the inner space of the sewer is dark and humid, and the evaporation of water in the sewage ring is limited. During the duration of the fully enclosed state, the remaining water ring remains almost unchanged. In the closed state of the floor leak air chamber, the moisture in the lower residual water ring diffuses into the room through the upper and lower space communication channels of the floating valve, and the water in the lower sewage ring evaporates to the floor leak air chamber. When the water loss and replenishment balance in the floor leak chamber, the air humidity in the floor leak chamber remains relatively stable. Restricted by the upper and lower space communication channels of the floating valve, the air humidity in the floor drain air chamber is higher than that of the indoor space. In theory, in a unit time, for a unit area of water surface, the amount of water evaporated to the high humidity space is lower than the evaporation to the low humidity space. This makes the evaporation rate of the remaining water ring moisture to the floor leak air chamber lower than the evaporation rate directly to the indoor space. Compared with the fully closed state, the lower closed state of the floor leak air chamber can be maintained for a longer period of time.

1. 2.5.3 Principle of drainage

The water on the floor of the kitchen and bathroom enters the upper residual water tank through the permeable top cover along the upper inner wall of the main body of the floating floor drain.

When the weight of the sewage discharged by the volume of the upper floating valve is equal to the weight of the floating valve, the floating valve floats, and the passage for sewage to enter the floor leakage air chamber is opened. When the level of the upper sewage ring is higher than the top plane of the inner edge of the upper residual water tank, the sewage passes over the inner edge of the upper residual water tank and enters the lower residual water tank along the inner wall of the main body of the floating seal floor drain.

When the weight of the discharged sewage was equal to the weight of the lower floating valve when the volume of the remaining tank sewage was immersed in the lower floating valve, the lower floating valve floated, and the passage for sewage to enter the sewer inner cavity was opened. When the water level of the lower sewage ring is higher than the top plane of the inner edge of the lower remaining water tank, the sewage passes through the inner edge of the lower remaining water tank, along the inner wall of the floating floor drain drain pipe, and enters the sewer through the sewage outlet.

During the process of sewage discharge, the upper floating seal floor drain barrier is in any state of increasing water discharge floating state, discharge water continuous floating state, and discharge water gradually disappearing floating state, and the upper floating valve floats with the change of the discharge ring; the lower floating seal floor drain barrier In any state of floating state with increasing water discharge, continuous floating state with water discharge, and floating state with fading water gradually, the lower float valve will float with the change of the water discharge ring.

The flow rate of the discharged sewage is determined by the area of the sewage outlet at the bottom of the floor drain, the minimum cross-sectional area of the water flow between the floating valve and the inner wall of the floor drain, and the minimum cross-sectional area of the water flow between the floating valve and the inner wall of the floor drain. surface area. The smallest of the three determines the maximum flow of the discharged sewage. In terms of design, the coordination of the three is guaranteed.

1. 2.5.4 Drainage self-purification principle

The remaining water tank on the inner wall of the main body of the floating seal floor drain cooperates with the protrusion around the lower part of the floating valve to guide the flow of sewage.

Through the structural design of the float valve and the residual water tank, the static water area in the residual water tank during the sewage discharge process is eliminated to prevent sedimentation. With the help of water flushing, remove and take away the sediment of the remaining water from the last drainage, and keep the floating floor drain clean.

The floor drain air chamber is the key to isolate the indoor air from the dirty air in the sewer with the floating floor drain. It innovates the way of gas communication between the indoor space and the sewer inner space: either, it is connected indirectly; or, it is blocked. In the open state, the indoor gas and the sewer gas are indirectly connected through the floor leak air chamber to control the amount of dirty air in the sewer cavity entering the room; in the upper closed, fully closed and lower closed states, the connection between the indoor gas and the sewer gas is cut off , to rule out the possibility of air pollution in the sewer cavity into the room.

1.3 Composition of floating seal floor drain

The floating floor drain consists of four parts: the main body of the floating floor drain, the upper floating valve, the lower floating valve, and the permeable top cover.

1.3.1 Main body of floating seal floor drain

The main body of the floating floor drain is a wall structure in which the floating floor drain is combined with the floor, and there are two steps, the upper one is larger and the lower one is smaller. The top is the embedded surface of the permeable roof and the upper water collection port, the middle part is the upper step and the middle water collection port, the lower part is the lower step and the lower water collection port, and the bottom is the sewage discharge port. The embedded surface of the permeable roof is used to place the permeable roof; the sewage discharge port introduces the sewage into the inner cavity of the sewer; the inner wall is the platform for the sewage to flow down, and the surface is smooth. flow. Part of the inner wall is an integral part of the floor leakage chamber.

From the embedded surface of the permeable top cover to the plane where the bottom of the sewage discharge outlet is located, the internal space of the main body of the floating floor drain is divided into three parts: the upper space, the middle space, and the lower space. The upper space is from the embedded surface of the permeable roof to the surface of the upper step and the plane of the middle water collection outlet; the middle space is from the plane of the middle water collection outlet to the plane of the lower step surface and the lower water collection outlet; the lower space is from the plane of the lower water collection outlet to the location of the sewage outlet flat.

The upper step is located in the middle of the main body of the floating seal floor drain, and is the basis for forming the upper layer of the floating floor drain barrier. A convex edge is provided on the edge of the lower outlet of the upper step to raise the middle water collection port, and an upper residual water tank is formed on the upper step. The upper water tank has a ring structure, and its bottom surface has two forms: one is a concave arc bottom surface, and the other is a combination bottom surface of a plane and a concave arc surface. This structure is conducive to the flow of sewage, and is beneficial to the flow of sewage to wash away the sediment for self-purification. Another function of the bottom surface combined with the plane and the concave arc surface is to support the floating valve and control the gas exchange. When there is sewage falling down, the remaining part of the upper remaining water tank will discharge the sewage to form the upper remaining water ring.

The lower step is located at the lower part of the main body of the floating-sealed floor drain, and is the basis for forming a lower floating floor drain barrier. A convex edge is arranged on the edge of the lower discharge port of the lower step to raise the lower water collection port, and the remaining water tank is formed on the lower step. The remaining water tank is an annular structure, and its bottom surface form is the same as that of the upper remaining water tank. When there is sewage falling down, the residual water tank retains part of the discharged sewage to form the remaining water ring.

For ease of expression, the convex edge on the inside of the remaining water tank is called the inner edge of the remaining water tank. The functions of the upper residual tank and the lower residual tank are the same. One is to retain the residual water, the other is to facilitate the flow of sewage, and the third is to support the upper or lower valve in the topping mode to control gas exchange. There are three forms of the top surface of the waste water tank: one is the top surface of a raised arc surface, the other is a top surface combined with a plane and a raised arc surface, and the third is a top surface combined with a raised arc surface or a plane and a concave arc surface. After being in contact with the surface of the float valve, the top surfaces of the three types of residual water tanks have different effects on controlling gas convection.

According to the different structures of the upper and lower residual tanks, the main body of the floating floor drain has four styles: one is the top-covering structure, the other is the upper-top-bottom-bottom structure, the third is the upper-bottom-bottom-top structure, and the fourth is the bottom-covering structure. The main feature of the floating floor drain with top covering structure is that the upper residual water tank and the lower residual water tank are designed based on the top covering type; Based on the bottom-covered fit design; the main body of the floating-seal floor drain with the upper bottom and lower top structure is characterized by the upper surplus water tank based on the bottom-covered fit design, and the lower surplus water tank based on the top-covered fit design; the main body of the bottom-covered structure floating seal floor drain is characterized by the upper surplus Both the water tank and the remaining water tank are designed based on the undercover fit.

1.3.2 Float valve

The float valve is a smooth structure. The upper part is a spherical structure with protrusions; the surrounding is a circular structure with a columnar outer edge; the bottom is a stepped structure, the middle part is concave as a plane, and the outer protrusions are a drooping curved surface. There are two types of drooping curved surfaces: one is a drooping surface with a downward convex arc, and the other is a combination of a plane and a downward convex arc.

The float valve is the component that forms the floatable floor drain barrier. Its surface is smooth and easy for sewage to drain. The upper part is provided with a protrusion to facilitate the lifting of the floating valve, and the top of the protrusion forms a plane to keep the floating state of the floating valve. A columnar convex edge is set around to control the lateral positioning of the float valve. The bottom step structure adopts a line shape that matches the upper tank, one is suitable for controlling the floating position of the upper float valve, the other is used to provide buoyancy, the third is to guide the flow of sewage, and the fourth is to control gas convection and prevent the passage of pests.

There are two types of float valves according to the different seating and matching methods of the float valve: one is the top cover type, and the other is the bottom cover type. The feature of the top-covered floating valve is based on the top-covered fit design. The valve is seated, and its external convex and drooping curved surface is in contact with the bottom plane of the residual water tank.

According to the difference in internal structure, float valves are divided into three types: solid type, hollow type, and semi-hollow type. They are suitable for processing and manufacturing with different materials. The solid type is suitable for light plastics, and the solid type and semi-hollow type are suitable for various plastics and metal materials.

According to the different coordination relationship between the float valve and the residual water tank, the float valve is divided into an upper float valve and a lower float valve, the upper float valve is used in conjunction with the upper residual water tank, and the lower float valve is used in conjunction with the lower residual water tank. The structure of the lower float valve is similar to that of the upper float valve, and the function is the same; it has the same style and the same structure type.

1.3.3 Permeable roof

The permeable roof is a plate-shaped structure with water flow channels. It is one of the components of the floating floor drain and is used in conjunction with the embedded surface of the permeable roof. Its functions are, one is to introduce floor sewage into the main body of the floor drain, and the other is to limit the floating height of the upper floating valve, and limit the floating height of the lower floating valve through the upper floating valve to determine the upper and lower floating ranges of the upper and lower floating valves. The third is to keep the appearance of the floating floor drain beautiful.

1.4 Structure of floating seal floor drain

The basic structure of the floating floor drain is to place a permeable top cover on the upper panel of the main body of the floating floor drain, place an upper floating valve on the upper step, and place a lower floating valve on the lower step.

1.4.1 Structural style

According to the difference between the main body and the upper and lower floating valves used in the floating seal floor drain, there are four structural styles of the floating seal floor drain: one is the upper and lower top covering type, the second is the upper top and lower bottom type, the third is the upper bottom and lower top type, and the fourth is the upper and lower bottom covering Mode.

1.4.1.1 Top and bottom floating seal floor drain

The upper and lower top cover floating seal floor drain is a floating seal floor drain composed of a top cover structure floating seal floor drain body, a top cover type upper floating valve, a top cover type lower floating valve, and a permeable top cover. (Figure 14)

1.4.1.2 Top top bottom bottom type floating seal floor drain

The upper top and lower bottom floating seal floor drain is a floating seal floor drain composed of a floating seal floor drain body with an upper top and lower bottom structure, a top covering type upper floating valve, a bottom covering type lower floating valve, and a permeable top cover. (Figure 15)

1.4.1.3 Floating seal floor drain with upper bottom and lower roof

The upper bottom and lower top floating seal floor drain is a floating seal floor drain composed of a floating seal floor drain body with an upper bottom and lower top structure, a bottom-covered upper floating valve, a top-covered lower floating valve, and a permeable top cover. (Figure 16)

1.4.1.4 Upper and lower bottom-covered floating seal floor drains

The upper and lower bottom-covered floating-sealed floor drains are floating-sealed floor drains composed of a bottom-covered structure floating-sealed floor drain body, a bottom-covered upper floating valve, a bottom-covered lower floating valve, and a permeable top cover. (Figure 17)

1.4.2 Floatable floor drain barriers

1.4.2.1 Upper floatable floor drain barrier

The upper floatable floor drain barrier is a floor drain barrier built on upper steps. It consists of an upper residual water tank and an upper floating valve, or an upper residual water tank, an upper floating valve and an upper sewage ring. The former is called the second restraining barrier; the latter is called the second blocking barrier.

The upper floating floor drain barrier separates the indoor space from the variable floor leak chamber space, and is the second barrier to prevent dirty air from entering the interior of the sewer cavity. For the second control barrier, the communication passage between the upper and lower spaces of the float valve is called the communication passage between the floor leakage air chamber and the indoor space. The air in the room and the air in the air chamber of the floor drain are convectively exchanged through this channel.

1.4.2.2 Floatable floor drain barrier on the lower level

The lower level floatable floor drain barrier is a floor drain barrier built on lower steps. It is formed by the cooperation of the lower steps and the lower floating valve, or is composed of the lower step, the lower floating valve and the lower sewage ring. Composed of the former, it is called the first restraining barrier; composed of the latter, it is called the first blocking barrier.

The lower floating floor drain barrier separates the space of the variable floor leakage chamber and the inner cavity of the sewer, and is the first barrier to prevent the dirty air from entering the inner cavity of the sewer. For the first control barrier, the communication passage between the upper and lower spaces of the float valve is called the communication passage between the floor leak air chamber and the inner cavity of the sewer. The air in the air chamber of the floor drain and the dirty air in the inner cavity of the sewer are convectively exchanged through this channel.

1.4.3 Float valve positioning

1.4.3.1 Float valve positioning

The floating valve is placed in the upper space of the floating seal floor drain. The edge of the upper space and the outer edge of the inner edge of the upper residual water tank determine the horizontal movement range of the floating valve. The permeable top cover and the upper residual water tank determine the vertical floating range of the floating valve.

The highest position of the floating valve is the position when the floating valve is in contact with the lower surface of the permeable roof, and the lowest position of the floating valve is the position when the floating valve is in contact with the top of the upper residual water tank or the bottom of the upper residual water tank. When there is sewage falling down, the floating valve continuously floats between the highest position and the lowest position; when the sewage is discharged completely, the floating valve stops at the position where the upper residual water ring floats it. Thereafter, the position of the floating valve gradually decreases with the volatilization of the moisture in the upper remaining water ring.

1.4.3.2 Lower float valve positioning

The lower floating valve is placed in the middle space of the floating seal floor drain, and the edge of the middle space and the outer edge of the inner edge of the remaining water tank determine the horizontal movement range of the lower floating valve. For the direct contact design of the upper and lower floating valves, the upper and lower floating range of the lower floating valve is determined by the middle plane of the lower surface of the upper floating valve and the remaining water tank.

For the direct contact design of the upper and lower float valves, the highest position of the lower float valve is the position when the lower float valve is in contact with the upper float valve at the highest position, and the lowest position of the lower float valve is the top of the lower float valve and the inner edge of the remaining water tank or the bottom of the remaining water tank position at the time of contact. When there is sewage falling down, the lower floating valve is constantly floating between the highest position and the lowest position; when the sewage is discharged completely, the lower floating valve stops at the position where the remaining water ring floats it. Thereafter, the position of the lower float valve gradually decreases with the volatilization of the moisture in the remaining water ring.

1.4.4 Sewage discharge channel

The basic function of the floor drain is to drain the sewage on the floor. When the floating floor drain discharges sewage, floor sewage enters the upper space of the floating floor drain through the permeable holes of the permeable roof; along the inner wall of the floating floor drain, through the water flow channel between the inner wall of the main body of the floating floor drain and the surface of the floating upper valve, Enter the middle space of the floating floor drain; then follow the inner wall of the floating floor drain, pass through the water flow channel between the inner wall of the main body of the floating floor drain and the surface of the floating lower valve, enter the lower space of the floating floor drain, and enter the sewer from the sewage outlet cavity.

1.5 Working principle of floating seal floor drain

When there is no water in the upper and lower remaining water tanks, or when the water level is lower than the bottom plane of the upper and lower floating valves, the upper and lower floating valves of the floating seal floor drain are seated on the valve seats of the upper and lower remaining water tanks. The indoor space and the inner space of the sewer are indirectly connected through the floor leak air chamber, the diseases and insect pests in the sewer are prevented from being outdoors, and the dirty components in the air in the sewer inner cavity communicate with the inner cavity of the sewer through the floor leak air chamber, the floor leak air chamber, the ground The air leakage chamber communicates with the interior space and invades the interior.

When sewage is discharged from the floor, the permeable top cover will guide the sewage flowing to the floor drain into the floating seal floor drain. The sewage entering the floor drain first collects in the upper sink to form an upper sewage ring. The continuously collected sewage gradually raises the level of the upper sewage ring. When the level of the upper sewage ring is higher than the bottom plane of the floating valve, the sewage fills the connecting channel between the floor leak chamber and the indoor space, and the indoor space is separated from the floor leak chamber; when the upper sewage When the ring level reaches the matching height, the floating valve floats up, and the channel for the sewage to pass through the upper floating floor drain barrier opens, and increases with the rise of the water surface; The sewage is discharged through the four walls of the floor leakage air chamber and enters the remaining water tank. The sewage is collected in the remaining water tank to form a sewage ring. The continuous collection of sewage gradually raises the level of the lower sewage ring. When the level of the lower sewage ring is higher than the bottom plane of the lower floating valve, the sewage fills the connecting channel between the floor leak chamber and the inner cavity of the sewer, and the space of the floor leak air chamber is separated from the inner cavity of the sewer; When the level of the sewage ring reaches the matching height, the lower float valve floats, and the channel for the sewage to pass through the lower floating floor drain barrier opens and increases with the rise of the water surface; when the water level of the remaining water tank is higher than the top plane of the remaining water tank The sewage leaks down and enters the inner cavity of the sewer. Since the indoor space is separated from the air leakage chamber, the polluted components of the sewer air entering the air leakage chamber are blocked in the air leakage chamber and cannot enter the room. Since the floor leak air chamber space is separated from the sewer inner cavity space, the sewer air is blocked below the floor leak air chamber and cannot enter the floor leak air chamber.

When the sewage stops falling, the horizontal plane of the upper sewage ring coincides with the top plane of the upper remaining water tank, and the horizontal plane of the lower sewage ring coincides with the top plane of the lower residual water tank. After that, entering the sewage evaporation period, the water level of the upper and lower sewage tanks began to drop. During this process, the water level of the upper sewage tank drops faster than the water level of the lower sewage tank.

If there is no sewage on the floor, the water in the sewage ring will evaporate gradually, and the water level will gradually drop. As the water level of the upper sewage tank drops, when the water level of the upper sewage tank drops to the appropriate height, the floating valve will be seated; when the water level of the upper sewage tank is lower than the bottom plane of the floating valve, the communication channel between the floor leakage chamber and the indoor space will be opened, and the indoor space will appear The gas convection with the floor leak air chamber space causes the water in the floor leak air chamber to disperse indoors, the water in the lower remaining tank evaporates to the floor leak air chamber, and the water level of the lower remaining water tank drops. When the water level of the lower sewage tank drops to the appropriate height, the lower floating valve is seated; when the water level of the lower sewage tank is lower than the bottom plane of the lower floating valve, the communication channel between the floor leak air chamber and the inner cavity of the sewer is opened, and gas convection between the floor leak air chamber and the sewer space occurs.

If the sewage stops entering the floor drain before the water level of the upper remaining water tank is higher than that along the top plane in the upper remaining water tank, the upper sewage ring begins to evaporate and decrease; if the sewage stops entering the floor drain before the water level of the lower remaining water tank is higher than that along the top plane in the lower remaining water tank, Then the upper sewage ring first begins to evaporate and decrease, and after the water level of the upper sewage ring is lower than the bottom plane of the upper float valve, the lower sewage ring begins to evaporate and decrease. The space separation between the indoor space and the floor leakage air chamber will continue until the level of the upper sewage ring is lower than the bottom plane of the upper floating valve, and the space separation between the floor leakage air chamber space and the inner cavity of the sewer will continue until the level of the lower sewage ring is lower than the bottom plane of the lower floating valve.

When there is sewage on the floor to leak down, the permeable top cover will again lead the sewage flowing to the floor drain into the floating seal floor drain, and the above-mentioned cycle repeats.

Claims (10)

1. a kind of floating seal floor drain, which is characterized in that the floor drain includes upper floor drain body（1）With lower floor drain body（2）, head cover（7）, and Float valve（5）, the float valve（5）It is set as float valve（8）With lower float valve（9）；The upper floor drain body（1）Top be equipped with head cover（7）, The lower floor drain body（2）Lower part be equipped with water outlet（4）, the upper floor drain body（1）With lower floor drain body（2）Inside intersection location is set There is upper convex edge（3）, the lower floor drain body（2）With water outlet（4）Inside intersection location is equipped with lower convex edge（10）；The upper float valve （8）It is set to inside floor drain, is covered in upper convex edge（3）Top, the lower float valve（9）It is set to inside floor drain, is covered convex under Edge（10）Top.

2. floating seal floor drain as described in claim 1, which is characterized in that the upper floor drain body（1）, the lower floor drain body（2）With Water outlet（4）It is tubular structure body.

3. floating seal floor drain as described in claim 1, which is characterized in that the upper floor drain body（1）With the lower floor drain body（2）It is flat It is sliding be connected be integrated or both is split structure.

4. floating seal floor drain as described in claim 1, which is characterized in that the upper convex edge（3）With the upper floor drain body（1）, institute State lower floor drain body（2）Smoothly it is connected and is integrated；The lower convex edge（10）With the lower floor drain body（2）, water outlet（4） Smooth being connected as one structure.

5. floating seal floor drain as described in claim 1, which is characterized in that the upper convex edge（3）With the upper floor drain body（1）Inside Remaining sink in formation（11）；The lower convex edge（10）With the lower floor drain body（2）Inside forms the sink that is left（12）.

6. floating seal floor drain as described in claim 1, which is characterized in that the float valve（5）For the structure that can float in water Body is one kind in two kinds of hollow core structures and solid core structure.

7. floating seal floor drain as described in claim 1, which is characterized in that the float valve（5）Top be equipped with limit protrusion（6）, It is controlled for vertical limit and floating posture, prevents float valve from tilting screens；And the float valve（5）Side also be provided with limit protrusion （6）, controlled for lateral position, ensure that flow is unobstructed.

8. floating seal floor drain as described in claim 1, which is characterized in that the float valve（5）For convex float valve and spill float valve two One kind in kind.

9. floating seal floor drain as described in claim 1, which is characterized in that the head cover（7）For a flow can by plate Structure.

10. floating seal floor drain as described in claim 1, which is characterized in that the upper float valve（8）, upper floor drain body（1）, upper convex edge （3）, the structure that is formed of the flow that flows through or the water body being detained in upper remaining sink, with the lower float valve（9）, lower floor drain body （2）, lower convex edge（10）, the structure that is formed in the water body being left in sink of the flow that flows through or retention, two structures it Between the gas chamber that is formed, the partition interior space and sewer intracavity space.