CN211774277U - Overflow device for improving overflow capacity and accelerating discharge speed of drain valve - Google Patents

Abstract

The utility model discloses an overflow device which improves the overflow capacity and accelerates the discharge speed of a drain valve. The overflow device comprises a casing and a check valve. A cavity is arranged inside the casing. Inlet and drain pipes. The check valve includes a valve stem, a valve sleeve, an elastic body, a support plate and an annular water baffle. The valve sleeve is fixed under the interior of the cavity, the bottom of the valve stem is installed in the valve sleeve and can move up and down, and the support plate is fixed on the valve. At the top of the stem, the elastomer is sleeved on the outside of the valve stem and pressed against the support plate. The annular water baffle is fixed on the top of the support plate, the top of the annular water baffle is provided with an overflow port, the annular water baffle and the support plate are enclosed to form a water seal area, and the bottom end of the water inlet pipe extends into the water In the enclosed area, the bottom surface of the water inlet pipe is sealed and fitted with the upper surface of the support plate. The overflow device can be installed separately to realize the overflow function, and can also be installed on the drain valve, so that the outside air cannot enter the drain port of the drain valve, and the drainage speed of the drain valve is improved.

Description

An overflow device that improves the overflow capacity and speeds up the discharge speed of the drain valve

technical field

The utility model relates to the field of sanitary ware, in particular to an overflow device which improves the overflow capacity and accelerates the discharge speed of a drain valve.

Background technique

The existing drain valve is composed of a valve body, a base and an overflow pipe. Wherein, the valve base is communicated with the overflow pipe. In the normal water-stop state, the outside air is communicated with the drain port of the drain valve base through the overflow pipe. When the overflow phenomenon occurs, the water flows from the overflow pipe to the drain outlet of the drain valve base and enters the toilet pipe. When the drain valve is opened, water flows out through the drain outlet at the base of the drain valve. In normal use, since the drain at the base of the drain valve communicates with the outside air through the overflow pipe channel, negative pressure will be generated in the drain channel during draining, and the outside Under the action of atmospheric pressure, the air will be mixed into the drain port of the drain valve base together, so that the drain channel is not full of water, thus reducing the drain speed. At the same time, the water inlet of the existing overflow pipe is generally located at the top. When an overflow occurs, a vortex is easily formed at the water inlet on the top, and the vortex brings a large amount of air into the overflow pipe, which not only reduces the overflow speed , it will also emit a lot of noise, which will have a bad impact on the surrounding environment.

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art, and to provide an overflow device which can improve the overflow capacity and speed up the discharge speed of the drain valve.

In order to achieve the above purpose, the technical scheme adopted by the present utility model is as follows:

An overflow device for improving overflow capacity and speeding up the discharge speed of a drain valve comprises a casing and a check valve arranged inside the casing. The inside of the casing is provided with a cavity, and the top and bottom of the casing are respectively fixedly connected with a water inlet pipe and a drain pipe that communicate with the cavity. The check valve includes a valve stem, a valve sleeve, an elastic body, a support plate and an annular water baffle, the valve sleeve is fixed under the interior of the cavity, and the bottom of the valve stem is mounted on the valve sleeve Can move up and down inside. The support plate is fixed on the top of the valve stem, and the elastic body is sleeved on the outside of the valve stem and pressed against the support plate upward. The annular water baffle is fixed on the top of the support plate, the top of the annular water baffle is provided with an overflow port, and a water seal area is formed between the annular water baffle and the support plate. The bottom end of the water inlet pipe extends into the water sealing area, and the bottom surface of the water inlet pipe is in sealing contact with the upper surface of the support plate.

Further, the upper and lower positions of the water inlet pipe and the drainage pipe correspond to the upper and lower positions of the drainage pipe, and a plurality of support rods extending toward the axis of the drainage pipe are fixed on the casing at the connection between the cavity and the drainage pipe. The valve sleeve is fixed on the support rod.

Further, the elastic body is a metal spring or a rubber spring.

Further, the housing includes an upper cover and a lower cover that are plugged into each other, the water inlet pipe is fixed on the upper cover, and the drain pipe is fixed on the lower cover.

Further, an overflow cap is also included, and the overflow cap is fixedly installed on the top of the water inlet pipe. The overflow cap includes a body part, and an overflow pipe running through the upper and lower parts is opened inside the body part, and the upper end of the inner wall of the overflow pipe is fixed with a water inlet end for blocking the overflow pipe. The water blocking part of the main body part is provided with a water inlet hole communicating with the drainage end of the overflow pipe on the side wall of the body part.

Wherein, the bottom of the water blocking portion extends downward to form a flow guide portion, and the outer wall surface of the flow guide portion is provided with a flow guide arc surface at a position opposite to the water inlet hole.

Preferably, the water inlet holes are provided with a plurality of water inlet holes, and the plurality of water inlet holes are evenly arranged along the circumferential direction of the side wall of the body portion.

Further, a water supplement pipe for arranging a supplement water pipe is opened in the water blocking part, and the water supplement pipe runs through the water blocking part and the diversion part up and down.

The utility model has the following beneficial effects: it provides an overflow device which can improve the overflow capacity and speed up the discharge speed of the drain valve. The end is in the water seal area, and the water in the water seal area plays the role of isolating the air. When the pressure of the check valve is greater than the elastic force of the elastic body, the check valve opens to realize the overflow function. When the overflow device is installed on the drain valve, the check valve is closed due to the elastic force of the elastic body. When the drain valve is draining, the outside air cannot enter the drain valve from the inlet pipe, and the drain valve outlet is almost full. In the water state, the drainage speed is greatly increased by the siphon effect when the drain valve is draining; when the overflow occurs, the opening of the side wall of the overflow cap and the structural features of the diversion part play a role, preventing the formation of eddy currents above the mouth of the water inlet pipe. The noise emitted by the replenishment water is effectively reduced, the water flow tends to be stable, and the water flow rate is relatively high, thereby improving the overflow capacity of the overflow device.

Description of drawings

Figure 1 is a schematic diagram of the internal structure of the utility model.

Figure 2 is an exploded view of the parts of the utility model.

Figure 3 is a working principle diagram of the utility model, wherein Figure 3 (a) is a schematic diagram of the principle when the check valve is closed, Figure 3 (b) is a schematic diagram of the principle when the check valve is open for overflow, and Figure 3 (c) is the check valve. Schematic diagram of the principle when it is opened and the bottom surface of the water inlet pipe is separated from the liquid level in the water seal area.

FIG. 4 is a schematic diagram 1 of the use state when the overflow device is installed on the drain valve.

Fig. 5 is a schematic diagram 2 of the use state when the overflow device is installed on the drain valve.

Figure 6 is a schematic diagram 1 of the use state when the overflow device is installed alone.

FIG. 7 is a schematic diagram 2 of the use state when the overflow device is installed alone.

Description of main component symbols: 1, housing; 10, cavity; 101, upper cover; 102, lower cover; 2, check valve; 200, water seal area; 21, valve stem; 22, valve sleeve; 23, elastomer ; 24, support plate; 25, annular water baffle; 250, overflow port; 26, support rod; 3, overflow cap; 31, body part; 310, overflow pipe; 311, water inlet hole; 32, Water retaining part; 320, water supply pipe; 33, diversion part; 330, diversion arc surface; 4, drain valve; 5, water inlet valve; 50, water supply pipe; 6, toilet water storage tank.

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1-3, an overflow device for improving the overflow capacity and speeding up the discharge speed of the drain valve includes a casing 1, a check valve 2 and an overflow cap 3. The interior of the casing 1 is provided with a cavity 10, and the check valve 2 is arranged in the cavity 10. The top and bottom of the casing 1 are respectively fixedly connected with a water inlet pipe 11 and a drain pipe 12 that communicate with the cavity 10. The upper and lower positions of the drain pipe 12 correspond to each other. The housing 1 includes an upper cover 101 and a lower cover 102 that are inserted into each other, the water inlet pipe 11 and the upper cover 101 are integrally formed, and the drain pipe 12 and the lower cover 102 are integrally formed.

The check valve 2 includes a valve stem 21 , a valve sleeve 22 , an elastic body 23 , a support plate 24 and an annular water blocking plate 25 . A plurality of support rods 26 extending toward the axis of the drain pipe 12 are fixed at the connection between the cavity 10 and the drain pipe 12 in the housing 1 , and the valve sleeve 22 is fixed on the support rods 26 . The bottom of the valve stem 21 is installed in the valve sleeve 22 and can move up and down. The support plate 24 is fixed on the top of the valve stem 21, the elastic body 23 is sleeved on the outside of the valve stem 21 and presses against the support plate 24 upward, and the elastic body 23 is a metal spring or a rubber spring. The annular water baffle 25 is fixed on the top of the support plate 24, the top of the annular water baffle 25 is provided with an overflow port 250, and a water seal area 200 is formed between the annular water baffle 25 and the support plate 24, and the inlet The bottom end of the water pipe 11 extends into the water sealing area 200 , and the bottom surface of the water inlet pipe 11 is in sealing contact with the upper surface of the support plate 24 .

The overflow cap 3 is fixedly installed on the top of the water inlet pipe 11 . The overflow cap 3 includes a main body portion 31 , an overflow pipe 310 that penetrates up and down is opened inside the main body portion 31 , and a water blocking for blocking the water inlet end of the overflow pipe 310 is fixed on the upper end of the inner wall of the overflow pipe 310 . Section 32. The side wall of the body portion 31 is provided with a plurality of water inlet holes 311 communicating with the drain end of the overflow pipe 310 , and the plurality of water inlet holes 311 are evenly arranged along the circumference of the side wall of the body portion 31 . The bottom of the water blocking portion 32 extends downward to form a guide portion 33 , and the outer wall surface of the guide portion 33 is provided with a guide arc surface 330 at a position opposite to the water inlet hole 311 . A water supplement pipe 320 for arranging the supplement water pipe 50 is opened in the water blocking part 32 , and the water supplement pipe 320 penetrates the water blocking part 32 and the diversion part 33 up and down.

FIG. 4 is a schematic diagram of one of the use states when the overflow device is installed on the drain valve 4 . The overflow device is installed on the base of the drain valve 4, and the overflow outlet is arranged on the side wall of the drain outlet of the valve base. In the initial state, it is in a closed state due to the action of the elastic force F1, and no water is injected into the overflow device. When the water inlet valve 5 is working, there are two streams of water, one is injected into the toilet water storage tank 6 , and the other is injected into the overflow device through the water replenishing pipe 50 . When the gravity F2 of the flowing water is greater than the elastic force F2 of the elastic body 23, the check valve 2 is opened, and the excess water enters the toilet pipe through the drain port of the valve base to realize the function of "filling water".

FIG. 5 is a schematic diagram of another use state when the overflow device is installed on the drain valve 4 . The overflow device is installed on the base of the drain valve 4, and the overflow outlet is arranged on the side wall of the drain outlet of the valve base. The toilet water tank 6 is normally filled with water, the working water level is lower than the overflow water level, and the check valve 2 is closed due to the elastic force F1 (the elastic force F1 is greater than the water gravity). The bottom end of the water inlet pipe 11 is located in the water seal area 200, and the water in the water seal area 200 acts to isolate the air, that is, the drain port of the valve base cannot communicate with the outside air through the overflow device. The pipe is full of water, thereby increasing the drainage flow rate. When the water inlet valve 6 does not stop with water and continues to feed water, the toilet water storage tank 6 will overflow, and the water will flow into the water inlet pipe 11 from the overflow port. When the gravity F4 of the water is greater than the elastic force F5, the check valve 2 The bottom surface of the water pipe 11 is separated from the liquid level of the water sealing area 200, and the water flows to the toilet pipe through the drain port of the valve base to realize overflow.

As shown in FIG. 6 , it is a schematic diagram of one of the use states when the overflow system is independently installed on the toilet water storage tank 6 . The overflow outlet is arranged at the bottom of the toilet water storage tank 6. In the initial state, it is in a closed state due to the action of the elastic force F1, and no water is injected into the overflow device. When the water inlet valve 5 is working, there are two streams of water, one is injected into the toilet water storage tank 6 , and the other is injected into the overflow device through the water replenishing pipe 50 . When the gravity F2 of the flowing water is greater than the elastic force F2 of the elastic body 23, the check valve 2 is opened, and the excess water enters the toilet pipe through the drain port of the valve base to realize the function of "filling water".

FIG. 7 is a schematic diagram of another use state when the overflow system is independently installed on the toilet water storage tank 6 . The toilet water tank 6 is normally filled with water, the working water level is lower than the overflow water level, and the check valve 2 is closed due to the elastic force F1 (the elastic force F1 is greater than the water gravity). The bottom end of the water inlet pipe 11 is located in the water seal area 200, and the water in the water seal area 200 acts to isolate the air, that is, the drain port of the valve base cannot communicate with the outside air through the overflow device. Therefore, the drain port of the drain valve 4 base is almost In a state of full pipe water, thereby increasing the drainage flow rate. When the water inlet valve 6 does not stop with water and continues to feed water, the toilet water storage tank 6 will overflow, and the water will flow into the water inlet pipe 11 from the overflow port. When the gravity F4 of the water is greater than the elastic force F5, the check valve 2 The bottom surface of the water pipe 11 is separated from the liquid level of the water sealing area 200, and the water flows to the toilet pipe through the drain port of the valve base to realize overflow.

Although the present invention has been specifically shown and described in connection with preferred embodiments, it will be understood by those skilled in the art that the Various changes made by the utility model are all within the protection scope of the present utility model.

Claims (8)

1. An overflow device for improving overflow capability and speeding up the discharge speed of a drain valve, characterized in that: it comprises a casing and a check valve arranged inside the casing, the interior of the casing is provided with a cavity, and the top of the casing is provided with a cavity. and the bottom are respectively fixedly connected with a water inlet pipe and a drain pipe that communicate with the cavity. The check valve includes a valve stem, a valve sleeve, an elastic body, a support plate and an annular water baffle, and the valve sleeve is fixed Below the inside of the cavity, the bottom of the valve stem is installed in the valve sleeve and can move up and down, the support plate is fixed on the top of the valve stem, and the elastic body is sleeved on the outside of the valve stem and up against the support plate, the annular water retaining plate is fixed on the top of the supporting plate, the top of the annular water retaining plate is provided with an overflow port, and the annular water retaining plate and the supporting plate are enclosed A water sealing area is formed, the bottom end of the water inlet pipe extends into the water sealing area, and the bottom surface of the water inlet pipe is sealed and fitted with the upper surface of the support plate. 2 . The overflow device for improving overflow capability and accelerating the discharge speed of a drain valve according to claim 1 , wherein the water inlet pipe corresponds to the upper and lower positions of the drain pipe, and the outer casing is in the upper and lower positions of the drain pipe. 3 . A plurality of support rods extending toward the axis of the drain pipe are fixed at the connection between the cavity and the drain pipe, and the valve sleeve is fixed on the support rods. 3. The overflow device for improving the overflow capacity and accelerating the discharge speed of the drain valve according to claim 1, wherein the elastic body is a metal spring or a rubber spring. 4 . The overflow device for improving overflow capacity and accelerating the discharge speed of a drain valve according to claim 1 , wherein the casing comprises an upper cover and a lower cover that are plugged into each other, and the water inlet pipe is fixedly installed. 5 . On the upper cover, the drain pipe is fixed on the lower cover. 5. An overflow device for improving overflow capacity and accelerating the discharge speed of a drain valve according to claim 1, characterized in that it further comprises an overflow cap, and the overflow cap is fixedly installed on the top of the water inlet pipe , the overflow cap includes a body part, the interior of the body part is provided with an overflow pipe running through up and down, and the upper end of the inner wall of the overflow pipe is fixed with a water inlet end for sealing the overflow pipe In the blocked water blocking part, the side wall of the body part is provided with a water inlet hole which is communicated with the drainage end of the overflow pipe. 6 . The overflow device for improving overflow capability and accelerating the discharge speed of the drain valve according to claim 5 , wherein the bottom of the water blocking portion extends downward to form a flow guide portion, and the flow guide portion extends downward. 7 . The outer wall surface of the part is provided with a guide arc surface at the position opposite to the water inlet hole. 7. The overflow device for improving overflow capability and accelerating the discharge speed of the drain valve as claimed in claim 6, characterized in that: the water inlet holes are provided with a plurality of water inlet holes, and a plurality of water inlet holes are arranged along the The side walls of the body portion are evenly distributed in the circumferential direction. 8 . The overflow device for improving overflow capability and accelerating the discharge speed of the drain valve according to claim 7 , wherein the water retaining portion is provided with a water supply pipe for arranging a water supply pipe, and the water supply pipe is provided in the water retaining portion. The water replenishing pipe penetrates the water blocking part and the diversion part up and down.

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