JP7227715B2 - Siphon drainage system and cleaning method for siphon drainage system - Google Patents

Description

The present invention relates to a siphon drainage system and a method for cleaning a siphon drainage system.

In recent years, a siphon drainage structure has been proposed as an alternative to the conventional gradient drainage structure (for example, Patent Document 1). In the siphon drainage structure, a siphon drainage pipe is connected to the plumbing equipment, and the siphon force (negative pressure) generated in the vertical pipe that forms the hanging part of the siphon drainage pipe is used to improve the drainage efficiency from the plumbing equipment. It is a structure that allows
Here, the siphon drainage structure includes a water-related device, a trap connected to the downstream side of the water-related device and provided with a reservoir in which waste water can be accumulated, a vent valve provided downstream of the reservoir, and the There may be a siphon drain located downstream of the reservoir. In such a siphon drainage structure, the seal water is normally sufficiently accumulated in the reservoir of the trap, thereby isolating the space between the upstream side and the downstream side of the trap through the seal water. (Hereinafter, "a state in which the space between the upstream side and the downstream side of the trap is blocked by water sealing" is also referred to as a "water sealing state"), for example, it prevents odors and vermin from entering from the downstream side. In addition, in this siphon drainage structure, a vent valve is provided on the downstream side of the reservoir of the trap. It prevents the occurrence of seal breakage (seal breakage) due to a decrease in drainage.

JP 2016-196744 A

By the way, in the above-mentioned siphon drainage system, the siphon force (suction force) forces the waste water to be discharged at a high flow speed in the piping where the siphon force is applied. The inside is relatively clean. On the other hand, in the piping on the upstream side of the reservoir of the trap, when the siphon force is generated, the vent valve operates so that the siphon force does not reach and the waste water does not flow at a high flow speed. Such a dirt removal action does not occur, and dirt tends to accumulate in the pipe.

The present invention solves the above-described problems, and provides a siphon drainage system that can clean the inside of the pipe upstream of the trap reservoir, and a trap that can clean the inside of the pipe upstream of the trap reservoir. It is an object of the present invention to provide a method of cleaning a siphon drainage system.

The siphon drainage system of the present invention has a trap provided with a reservoir in which waste water can be collected, a vent valve provided downstream of the reservoir, and a siphon drain pipe provided downstream of the vent valve. The vent valve can be opened and closed arbitrarily.
According to the siphon drainage system of the present invention, since the opening and closing operation of the vent valve can be arbitrarily performed, the inside of the pipe on the upstream side of the reservoir of the trap can be washed.

In the siphon drainage system of the present invention, preferably, the vent valve is a normally closed valve, and the user can arbitrarily operate the vent valve to maintain the closed state. According to this configuration, the user can supply sealed water to the trap upon noticing the breakage of the seal.
In the present invention, the term "always-closed valve" means that the vent valve is normally opened (for example, in a state in which no operation or action is performed to maintain the closed state of the vent valve). The "external force" is, for example, if the vent valve is a Dolgo vent valve, the pressure inside the vent valve is lower, etc. It refers to the force caused by the pressure difference between the inside and outside, or the force caused by excitation (energization) if the vent valve is a solenoid valve.

In the siphon drainage system of the present invention, the siphon drainage system has a siphon force detection unit that detects that a siphon force is generated in the siphon drainage pipe, the vent valve is a normally closed valve, and the siphon force detection is performed. More preferably, the unit detects the generation of the siphon force and operates so as to maintain the closed state of the vent valve. According to this configuration, cleaning can be performed at an appropriate timing.

In the siphon drainage system of the present invention, the siphon drainage system has a drainage detection unit that detects that drainage is not performed, and the drainage detection unit detects that drainage is not performed, It is preferable that the maintenance of the closed state of the vent valve is cancelled. According to this configuration, it is possible to prevent the trap from breaking.
In the present invention, "drainage is not performed" means, for example, after the use of the water supply in the plumbing equipment is over, or after the use of the disposer provided in the plumbing equipment is over, This refers to a state in which water remains in areas that receive water (tap water) in plumbing equipment or in disposers, and some wastewater can be discharged from there.

In addition, the siphon drainage system of the present invention preferably has a sealing water filling mechanism that supplies sealing water to the reservoir of the trap in conjunction with releasing the closed state of the vent valve. . According to this configuration, the sealed water can be recovered even if the trap is broken.

A method for cleaning a siphon drainage system according to the present invention includes a trap having a reservoir in which waste water can be collected, a normally closed vent valve provided downstream of the reservoir, and a vent valve downstream of the vent valve. A method of cleaning a siphon drain system having a siphon drain pipe, comprising the step of maintaining the vent valve closed during siphon force generation.
According to the cleaning method of the siphon drainage system of the present invention, the opening operation of the vent valve can be performed arbitrarily, so that the inside of the pipe on the upstream side of the reservoir of the trap can be cleaned.

ADVANTAGE OF THE INVENTION According to this invention, the siphon drainage system which can wash the inside of piping of the upstream from the storage part of a trap, and its washing method can be provided.

1 is a schematic diagram of a siphon drainage system according to an embodiment of the invention; FIG. FIG. 2 is a cross-sectional view showing an example of the vent valve of FIG. 1; FIG. 5 is a partial cross-sectional view of a portion of a siphon drainage system according to a modification of an embodiment of the present invention after drainage is complete and with a broken water seal; 4 is a perspective view of a portion of the siphon drainage system shown in FIG. 3; FIG. FIG. 4 is a perspective view showing a portion of a first modified example of the siphon drainage system shown in FIG. 3; FIG. 4 is a perspective view of a portion of a second modified version of the siphon drainage system shown in FIG. 3;

Embodiments of the present invention will be exemplified below with reference to the drawings.
First, a siphon drainage system according to an embodiment of the present invention will be described with reference to FIG.
A siphon drainage system 10 exemplified in FIG. It is composed of a confluence pipe 19 that is connected to the The plumbing equipment 11 in the example shown in FIG. 1 is a kitchen sink, and a disposer 20 is provided at its drain port. The type of the plumbing device 11 is not particularly limited as long as it drains water, and it may be a dishwasher, a washstand, a washing machine, a bathtub and a washing place provided in a bath such as a unit bath, a toilet, and the like. can.

Specifically, the plumbing equipment 11 is arranged on the floor panel 20 of the residence, and the drainage system 10 includes a first drain pipe 12 connected from the plumbing equipment 11 to the plumbing equipment 11, The trap 13 is provided on the downstream side of the plumbing device 11 and has a reservoir 131 in which waste water can be collected, and the vent valve 14 is provided on the downstream side of the reservoir 131 . In the siphon drainage system 10 as described above, normally, the sealing water is sufficiently accumulated in the storage portion 131 of the trap 13, so that the space between the upstream side and the downstream side of the trap 13 is filled with water. For example, it is possible to prevent odors and insects from entering from the downstream side. In addition, in this siphon drainage system 10, when a siphon force (negative pressure) is generated, the vent valve 14 is opened and air is taken in through the vent valve 14, so that the pressure in the pipe returns to normal pressure and seals. Drainage (breaking of the seal) can be prevented (a water-sealed state can be maintained).

Next, the siphon drainage system 10 is connected to the downstream side of the trap 13 and connected to the straight pipe 15 for guiding the drainage under the floor panel 20 to the vicinity of the floor slab 22, and the downstream side of the straight pipe 15, and is horizontally , a vertical pipe 17 connected to the downstream side of the horizontal pipe 16 and penetrating the piping hole 23 of the floor slab 22, and the downstream side of the vertical pipe 17 connected via a joint 18 It has a confluence pipe 19 to be connected. Further, the horizontal pipe 16 is made of a pipe thinner than the pipe used for conventional slope drainage, and is installed substantially horizontally (substantially no gradient).
The siphon drain pipe 24 of the siphon drain system 10 according to the embodiment of the present invention is a pipe provided downstream of the reservoir 131 of the trap 13, and in the example of FIG. It is composed of a pipe 16 and a vertical pipe 17 .
In such a siphon drainage system 10, the drainage flowing from the plumbing equipment 11 easily fills up the horizontal pipe 16, and when the horizontal pipe 16 is full, the vertical pipe 17 is discharged from the horizontal pipe 16. A siphon force can be generated by causing the wastewater to flow downward. The horizontal pipe 16 is drained by being pulled by the generated siphon force.

The confluence pipe 19 is a tubular body having a diameter larger than that of the horizontal pipe 16 and the vertical pipe 17, and is provided vertically through the building. As described above, the confluence pipe 19 is connected to the drainage channel from the plumbing device 11, but is also connected to the drainage channel from other plumbing devices (not shown), and is connected to the septic tank (not shown) on the downstream side. there is

Here, in the siphon drainage system 10 of the present embodiment, the vent valve 14 can be arbitrarily opened and closed. Therefore, in the present embodiment, the inside of the pipe upstream of the reservoir 131 of the trap 13 can be washed arbitrarily. Specifically, as described above, normally, when the siphon force is generated by the drainage supplied from the plumbing equipment 11, the vent valve 14 provided in the siphon drainage system 10 is opened and the sealing water is cut off. It seems that there is no On the other hand, for example, when the siphon force is generated, the opening and closing operation of the vent valve 14 is maintained (in the case of the normally closed type) or operated (in the case of the normally open type) so that the vent valve 14 is closed, The siphon force also extends into the pipe upstream of the reservoir 131 of the trap 13 via the water seal in the trap 13, and the suction force of the siphon force forces the drainage supplied from the plumbing equipment 11. It can be drained and the piping cleaned.

By the way, the vent valve 14 is not particularly limited, and may be, for example, a normally open or normally closed valve. From the viewpoint of preventing the odor in the drain pipe from leaking through the vent valve 14 without operating the vent valve 14 when the siphon drainage system 10 is not in use, the valve is preferably a normally closed valve. The normally closed vent valve 14 is not particularly limited, but a Dolgo vent valve, an electromagnetic valve, or the like can be used.
In this embodiment, although illustration is omitted, in addition to the vent valve 14, for example, the vent valve 14 and a drain pipe (trap 13 or siphon The connecting pipe 25 (see FIG. 1) connecting the drain pipe 24) can be separately provided with an additional valve that can be opened and closed arbitrarily to block the vent valve 14 and the drain pipe. can be arbitrarily opened and closed. Specifically, for example, the vent valve 14 is a normally closed valve, and the connecting pipe 25 is provided with a normally open valve (for example, a normally open electromagnetic valve) that can be closed arbitrarily as an additional valve. Via additional valves, the opening and closing of the vent valve 14 can be optionally performed.

In the siphon drain pipe system of the present embodiment, the opening and closing operation of the vent valve 14 is performed arbitrarily, so that a siphon force can be exerted on the pipe upstream of the reservoir 131 of the trap 13 (as a result, the upstream side (The inside of the piping can be cleaned). In this siphon drain pipe system, siphon force is generated in the siphon drain pipe 24 in cases other than when the opening/closing operation of the vent valve 14 is performed arbitrarily (for example, in many cases when the plumbing equipment 11 is used). In order to prevent the water seal in the storage part 131 of the trap 13 from being cut off even when the trap 13 is closed, it is preferable that the vent valve 14 is naturally opened and closed so that outside air is taken into the siphon drain pipe 24 . In this way, the state in which the vent valve 14 naturally opens and closes to prevent the water seal from running out in many cases when the plumbing device 11 is used is also referred to as a "normal operating state."

Here, in the first aspect of the present embodiment, with respect to the vent valve 14, the vent valve 14 is a normally closed valve, and the user (for example, the user of the plumbing equipment 11) can arbitrarily open the vent valve 14. An operation can be performed to maintain the closed state (hereinafter, operation to maintain the closed state of the vent valve 14 is also referred to as "closed state maintaining operation"). Therefore, since it can be operated at the user's timing, the inside of the pipe can be cleaned at any time. In addition, as a result of the user's operation, for example, if the operation of maintaining the closed state of the vent valve 14 is too long, the supply of drainage from the plumbing equipment 11 may be stopped and the seal may be broken, but even if the seal is broken A user can notice this and supply sealing water to the reservoir 131 of the trap 13 .

The method by which the user operates the vent valve 14 to maintain the closed state is not particularly limited. For example, if the vent valve 14 is a Dolgo vent valve as shown in FIG. The closed state maintaining operation can be performed by continuing to press the fixing portion 142 for preventing the movable platen 141 from moving. Specifically, the Dolgo vent valve has a movable platen 141 , a valve cylinder portion 143 (a portion connected to a pipe), a rubber seal portion 144 and a valve dome portion 145 . Normally, when the pressure inside the vent valve 14 is normal, there is no difference between the pressure inside the vent valve 14 and the pressure outside the vent valve 14, so the only force applied to the rubber seal portion 144 is gravity. The valve is closed by pressing the opening 146 . On the other hand, when the inside of the vent valve 14 becomes negative pressure, the pressure outside the vent valve 14 is applied to the rubber seal portion 144 from the bottom to the top of the drawing, and the movable platen 141 and the rubber seal portion 144 pushes up to open the opening 146, thereby opening the valve. In the vent valve 14 of FIG. 2, the valve dome portion 145 is provided with a fixing portion 142 that passes through the valve dome portion 145 so as to be slidable, and an attachment portion 147 for attaching the fixing portion 142 to the valve dome portion 145. By preventing the movable platen 141 and the rubber seal portion 144 from moving with the fixing portion 142, the closed state maintaining operation can be performed.

As another method for the user to maintain the closed state of the vent valve 14, in FIG. By turning 142 and depressing the movable platen 141, the closed state maintaining operation can be performed. In addition, by making the outer diameter of the fixing portion 142 slightly larger than the inner diameter of the mounting portion 147 and forming each of them with a resin material, the fixing portion 142 can be press-fitted into the mounting portion 147, and the user can continue to hold the fixing portion 142. The operation to maintain the closed state can be performed even without it. Further, if the fixed portion 142 is made movable by, for example, a motor provided on the mounting portion 147 and its operation is electronically operable, the user can remotely maintain the closed state. When the fixed portion 142 is provided in this manner, the normal operation state can be achieved by positioning the fixed portion 142 sufficiently away from the movable platen 141 .
Furthermore, if the vent valve 14 is an electromagnetic valve, the user can electronically operate the electromagnetic valve to maintain the closed state. In the case of using a solenoid valve, for example, after providing a siphon force detection unit described later, the siphon force detection unit detects the generation of a siphon force and automatically opens the solenoid valve according to the signal. By doing so, the normal operating state can be achieved.

Furthermore, as another method for the user to maintain the closed state of the vent valve 14, there is a method of not operating the movable platen 141 in the vent valve 14 as illustrated in FIG. Instead, the connecting pipe 25 that connects the vent valve 14 and the drain pipe (the trap 13 and the siphon drain pipe 24) is provided with an additional valve such as a normally open valve or a solenoid valve, which the user can close. A keep-closed operation can be performed by manually or remotely operating the vent valve 14 to keep it closed (in this case, the additional valve blocks the siphon force from reaching the vent valve 14 to keep it closed). is done).

In addition, in the siphon drainage system 10 of the present embodiment, as described above, as a result of the user operating the ventilation valve 14 to maintain the closed state, for example, the operation to maintain the closed state is too long, and the plumbing equipment There is a possibility that the supply of waste water from 11 will be lost and the seal will be broken. When the seal is broken in this way, the user can supply sealing water as described above. When the closed state maintenance operation is electronically operable, such as when the additional valve is a solenoid valve, after the user performs the closed state maintenance operation, the closed state maintenance operation can be automatically released (that is, it can have a timer function). Specifically, if the siphon force continues to be generated by canceling the maintenance of the closed state of the vent valve 14 after a predetermined time has elapsed after performing the operation to maintain the closed state, the vent valve 14 is opened. In this state, it is possible to prevent the occurrence of water seal breakage (seal breakage) (the water seal state is maintained).

Next, a second aspect of this embodiment will be described. While the first mode described above is a mode in which the user operates the vent valve 14 to maintain the closed state, the second mode automatically maintains the closed state of the vent valve 14. This is a mode that operates in Specifically, in the second aspect of the present embodiment, the siphon drainage system 10 has a siphon force detection unit that detects that a siphon force is generated in the siphon drainage pipe 24, and the vent valve 14 is a normally closed valve. It has become. Furthermore, the siphon drainage system 10 operates so that the closed state of the ventilation valve 14 is maintained when the siphon force detection unit detects the generation of the siphon force (hereinafter, the closed state of the ventilation valve 14 is maintained). This operation is also referred to as "closed state maintaining operation"). By doing so, the inside of the pipe on the upstream side of the reservoir 131 of the trap 13 can be washed at an appropriate timing.
Here, the operation to maintain the closed state of the vent valve 14 is performed by receiving a signal from the siphon force detection unit and operating the control unit to maintain the closed state of the vent valve 14 based on the signal. It can be provided in the system 10 and operated by the controller.

In addition, as a method for operating to maintain the closed state of the vent valve 14, as described in the first aspect of the present embodiment, if the vent valve 14 is the Dolgo vent valve, the method is illustrated in FIG. The fixed portion 142 can be moved by, for example, a motor provided on the mounting portion 147, and the control portion controls the operation to maintain the closed state. Furthermore, if the ventilation valve 14 is an electromagnetic valve, the controller can control the electromagnetic valve to maintain the closed state. In addition, an additional valve such as a normally open valve or a solenoid valve is provided in the connecting drain pipe between the vent valve 14 and the drain pipe, and the control unit controls it so that it is closed. A state maintenance operation can be performed.

The siphon force detector can be, for example, a pressure sensor capable of detecting negative pressure, or a flow velocity sensor capable of detecting the flow velocity of waste water in the pipe. Also, the siphon force detection unit can be arranged downstream of the storage unit 131 of the trap 13, for example.

In the second aspect of the present embodiment, the siphon force detection unit detects the siphon force and performs the operation to maintain the closed state, and after a predetermined time has elapsed, the control unit automatically cancels the maintenance of the closed state of the vent valve 14. can do. By doing so, it is possible to prevent the trap 13 from breaking.
Further, in the second aspect of the present embodiment, the siphon drainage system 10 has a drainage detection unit that detects that drainage is not performed, and the drainage detection unit detects that drainage is not performed. By doing so, the maintenance of the closed state of the vent valve 14 can be canceled. By doing so, the vent valve 14 is in an open state before the water seal breaks (seal breakage), and it is possible to prevent the water seal breakage (seal breakage) from occurring. Even if a water seal occurs, the water remaining in the plumbing device 11 can fill the seal water (water seal state is maintained). The drainage detector may be, for example, a sensor for detecting the end of use of the water supply (for example, stoppage of water supply from the faucet) in the plumbing equipment 11, or a receiver capable of receiving a signal indicating the end of use. can be Further, as the drainage detection unit, for example, if the disposer 20 is provided in the plumbing equipment 11 as in the example of FIG. It can also be provided with a possible receiver. Furthermore, if the disposer 20 has a water supply function capable of supplying water to the interior in conjunction with the use of the disposer 20, the water discharge detection unit may be a sensor for detecting the water supply stop of the water supply function of the disposer 22 or the water supply stop. It is also possible to provide a receiving section capable of receiving the signal of

In the siphon drainage system 10 according to the first and second aspects of the present embodiment, in conjunction with the release of the closed state of the vent valve 14, sealing water is supplied to the reservoir 131 of the trap 13. It can have a water seal filling mechanism that By doing so, even if the trap 13 is broken by maintaining the closed state of the vent valve 14, sealed water is supplied from the sealed water filling mechanism in conjunction with the release of the closed state of the vent valve 14. Therefore, the water sealing of the trap 13 can be restored (the water sealing state can be achieved). The amount of sealing water supplied by the sealing water filling mechanism is an amount larger than the minimum volume of water for making the water sealing state in the reservoir 131 of the trap 13, and more preferably the reservoir 131 of the trap 13. It is more preferable that the volume of water is larger than the maximum volume of water for establishing a water sealing state in . As a result, the trap 13 can be brought into a water-sealed state more reliably.

In the present embodiment, the sealed water filling mechanism receives a signal indicating that the closed state of the ventilation valve 14 is cancelled, and automatically supplies water from a water system that can be used for the plumbing equipment 11. can. Specifically, the water is guided by a pipe branched from the water system and connected to, for example, the vicinity of the drain port of the water equipment 11, or a pipe connected to the drain pipe on the upstream side of the reservoir 131 of the trap 13, When a signal indicating that the maintenance of the closed state of the vent valve 14 is canceled is received, a A mechanism for supplying a predetermined amount of water as seal water can be used. Further, since the plumbing equipment 11 illustrated in FIG. 1 has the disposer 20, the sealing water filling mechanism can be a mechanism that supplies a predetermined amount of water as sealing water after using the disposer 20. By providing the siphon drainage system 10 with a release transmitting unit that transmits a signal when the closed state of the vent valve 14 is released, the water seal filling mechanism can release the closed state of the vent valve 14. In conjunction with this, sealing water can be supplied to the reservoir 131 of the trap 13 .
As for the sealed water filling mechanism, for example, in the second aspect of the present embodiment described above, the drainage is detected by the drainage detection unit without being interlocked with the release of the maintenance of the closed state of the vent valve 14. In conjunction with the detection of the lack of water supply, a mechanism is provided in which water is automatically supplied from a water system that can be used in the plumbing equipment 11, or a predetermined amount of water is supplied as sealed water after the disposer 20 is used. You can also

Further, as the sealing water filling mechanism, the mechanism according to the following modifications can be used in place of the above mechanism.
That is, as shown in FIG. 3, the sealed water filling mechanism 30 according to this modified example includes a holding portion 31 having an opening 311 into which part of the waste water can flow and capable of temporarily holding the waste water; and a discharge path 32 for discharging the waste water held by the holding portion 31 . By doing so, in the holding portion 31, for example, part of the drainage when the plumbing equipment 11 is used flows into the holding portion 31 through the opening 311 to temporarily hold the drainage (the holding portion 31 Even if the seal water in the trap 13 is cut off, the waste water retained by the retaining part 31 can be supplied to the storage part 131 of the trap 13 through the discharge path 32 to fill the seal water. It becomes possible. In this modified example, as shown in FIG. 3, the plumbing equipment 11 has the disposer 20, but the plumbing equipment 11 may not have the disposer.

As shown in FIG. 3 , when the sealing water filling mechanism 30 is provided with the holding portion 31 and the discharge path 32 , the holding portion 31 is included in the plumbing equipment 11 as shown in the example of FIG. 3 . It can be formed by the side surface and the tubular portion 111 provided on the inner side surface of the plumbing device 11 . Since the plumbing device 11 is provided with the tubular portion 111 in this way, the plumbing device 11 can pass through the opening 311 of the holding portion 31 formed by the upper end portion of the tubular portion 111 and the inner surface of the plumbing device 11 . A part of the waste water when using the container 11 flows into the holding part 31, and the holding part 31 temporarily holds the waste water. By forming the holding portion 31 in this manner, the holding portion 31 can easily hold the waste water temporarily without hindering the flow of the waste water to the drain port.

In the example of FIG. 3, the tubular portion 111 is detachably provided on the drain port at the bottom of the plumbing device 11 from the viewpoint of facilitating the provision of the water sealing and filling mechanism 30 . The cylindrical portion 111 can be made of resin, for example, and has an inner diameter substantially the same as that of the first drain pipe 12. The inner and outer diameters of the cylindrical portion 111 is substantially constant in the axial direction. The tubular portion 111 has a circular cross section (cylindrical as a whole) in the illustrated example, but may have any shape.

As shown in the example of FIG. 3, the drain port of the plumbing device 11 has a notch portion whose inner diameter is the same as or slightly larger than the outer diameter of the portion of the tubular portion 111 attached to the drain port, Thereby, the tubular portion 111 and the drain port can be fitted. Also, in order to perform the fitting more reliably, a packing made of rubber, for example, can be attached to the attachment portion of the cylindrical portion 111 to the drain port.
In the example of FIG. 3, the tubular portion 111 is detachable as described above. If the drain pipe 23 is not provided, the drain pipe 23 and the cylindrical portion 111 can be integrated by passing the drain pipe 23 through the drain port of the plumbing device 11 .

Moreover, in this modified example, as shown in FIGS. Therefore, the sealing water filling mechanism 30 can be provided more effectively. It should be noted that the “lower side” of the side surface of the tubular portion 111 means the lower side when the tubular portion 111 is attached to the plumbing device 11, and the lower side of the tubular portion 111 means that the through hole 33 is located below the tubular portion 111. It is a portion of the side surface of the cylindrical portion 111 near the drain port of the plumbing device 11 .
In the illustrated example, as shown in FIG. 4, the discharge path 32 is formed by forming a row of a plurality of circular through-holes 33 (three in the figure) arranged in the axial direction of the tubular portion 111 . It is formed by providing it in the surroundings. However, the discharge passage 32 is not limited to the shape, number, and layout of the illustrated example. A mesh formed in part (eg, under the side surface) or all of the portion 111 can be optional.

In the present embodiment, as shown in FIG. 3 , the volume of waste water (maximum volume) that can be temporarily retained by the retaining portion 31 is the minimum amount of water required to seal the reservoir 131 of the trap 13 . larger than its volume. By doing so, it is possible to reliably recover the sealing water even if the sealing water is broken. The minimum volume of water for sealing the water in the reservoir 131 of the trap 13 may vary depending on the size of the pipe used, etc. Therefore, the volume of wastewater that can be temporarily retained by the retaining section 31 also varies. can. In the present embodiment, the volume of waste water that can be temporarily held by the holding portion 31 is the maximum water volume for making the water sealing state in the storage portion 131 of the trap 13 from the viewpoint of ensuring more reliable water sealing. Larger is more preferable.

In the example shown in FIG. 3, the plumbing equipment 11 has a wall surface 112 and a gently sloping portion 113 slightly slanted from the horizontal direction so that the drainage flows toward the drain port in the cross-sectional view of FIG. Further, it has a concave portion 114 that is recessed downward from the gently sloping portion 113 . Since the plumbing device 11 has the concave portion 114 , the holding portion 31 can easily hold the drainage.

In the example shown in FIG. 3, the opening 311 of the holding part 31 and the opening of the cylindrical part 111 are not covered, and for example, a lid for removing dust in the drainage is not provided. A meshed, gridded, or the like lid can be placed to reduce the entry of debris into 31 .

In addition, when the sealing water filling mechanism 30 includes the holding portion 31 and the discharge path 32, the area of the opening of the discharge path 32 (if there are a plurality of discharge paths 32 as shown in FIG. 3, all the discharge The total area of the openings of the passages 32) is preferably 4 to 50 mm ² , more preferably the total area of the openings of the discharge passages 32 is 9 to 18 mm ² . By setting the entire area of the opening of the discharge path 32 to 4 mm ² or more, the wastewater retained in the holding part 31 can be effectively discharged from the discharge path 32, and the entire opening of the discharge path 32 can be discharged. By setting the area to 50 mm ² or less, when the siphon force in the trap 13 is removed, the holding portion 31 can effectively hold the waste water. The "area of the opening of the discharge passage" refers to the area of the opening of the discharge passage 32 that opens to the outside of the opening to the inside and the opening to the outside of the holding portion 31 .

Here, as a first example in which the discharge passage 32 included in the modifications illustrated in FIGS. It can be formed by a through hole 33 and a tubular body 34 extending from the through hole 33 . Specifically, in the discharge passages 32 illustrated in FIG. 5, the number of discharge passages 32 is less than the discharge passages 32 illustrated in FIG. 5, the opening area per one of the discharge passages 32 (through holes 33) is relatively larger than that of the discharge passages 32 (through holes 33) of FIG. Further, the discharge passage 32 illustrated in FIG. 5 has a tubular body 34 extending from the through hole 33 , and the tubular body 34 is arranged around the tubular portion 111 along the bottom surface of the holding portion 31 . . In the example illustrated in FIG. 5 , the drainage of the holding part 31 is discharged by flowing the drainage through the opening at the end of the tubular body 34 and discharging it from the through hole 33 of the cylindrical part 111 . By forming the discharge path 32 with the through hole 33 and the tubular body 34 in this way, the tubular body 34 can also serve as a holding part. In the example of FIG. 5, the discharge of the wastewater to the outside of the holding portion 31 is performed by the inflow of the wastewater from the end portion of the tubular body 34 in the axial direction. , one or more openings may be provided in the vertical upper sidewall of tubular body 34 anywhere other than at the ends (e.g., in the middle of tubular body 34) to further facilitate drainage of waste water. .

Furthermore, as a second example in which the discharge path 32 of the modified examples illustrated in FIGS. In addition, a groove that extends toward and opens to the drain is formed, and the cylindrical part (which may or may not have a through hole) is placed so as to cover the groove (the inside of the groove The discharge channel 32 can also be a groove on the surface of the bottom of the plumbing device 11 by providing it on the surface of the bottom of the plumbing device 11 so as not to block it. Alternatively, the bottom portion of the plumbing device 11 forming the holding portion 31 and the first drain pipe 12 may be formed as a communicating portion, for example, by a tubular body.

Further, as a third example in which the sealing water filling mechanism 30 of the modified examples illustrated in FIGS. can be shown. Specifically, as shown in FIG. 6 , by providing a partial cylindrical portion 115 obtained by cutting the holding portion 31 in the axial direction on the inner surface of the plumbing device 11 , the inner surface of the plumbing device 11 and the partial cylindrical portion 115 can be separated from each other. and the discharge path 32 can be a through hole formed below the side surface of the partial cylindrical portion 115 .

Next, an example of a cleaning method for the siphon drainage system according to this embodiment will be described.
The method for cleaning a siphon drainage system according to the present embodiment includes a trap 13 having a reservoir 131 in which drainage can accumulate, and a downstream side of the reservoir 131, like the siphon drainage system 10 described above, as a siphon drainage system. A siphon drain system having a normally closed vent valve 14 and a siphon drain 24 located downstream of the vent valve 14, the cleaning method comprising: A step of maintaining the closed state of the vent valve 14 (hereinafter also referred to as a maintaining step) is included. By having this step, the generated siphon force reaches the inside of the pipe upstream of the reservoir 131 of the trap 13 through the water seal in the trap 13, and the suction force of the siphon force causes the plumbing equipment 11 to move. The wastewater supplied from the can be forcibly discharged to clean the piping.

In the present embodiment, in the maintaining step, the closed state of the vent valve 14 can be maintained by the user's operation. Further, when the siphon drainage system 10 has a siphon force detection unit that detects that a siphon force is generated in the siphon drainage pipe 24, the maintenance of the closed state of the vent valve 14 is detected by the siphon force detection unit. , it can be operated by a control unit that operates to maintain the closed state of the vent valve 14 based on the signal.

After the maintaining step, a step of automatically releasing the closed state of the vent valve 14 after a predetermined period of time has passed after the closed state of the vent valve 14 is maintained can be included. By doing so, it is possible to prevent the trap 13 from breaking.

Further, in the present embodiment, when the siphon drainage system 10 has a siphon force detection unit that detects that a siphon force is generated in the siphon drainage pipe 24, the siphon drainage system 10 detects that drainage is not being performed. It can have a step of detecting, after the maintaining step, the drainage detection unit detecting that the drainage is not being performed and canceling the maintenance of the closed state of the vent valve 14. . This can prevent the trap 13 from breaking.

Furthermore, in the present embodiment, the siphon drainage system 10 has a sealing water filling mechanism that supplies sealing water to the reservoir 131 of the trap 13 in conjunction with the release of the closed state of the vent valve 14, After the maintaining step, the closed state of the vent valve 14 is canceled, so that the sealing water filling mechanism can have a step of supplying the sealing water to the reservoir 131 of the trap 13 . Thereby, even if the trap 13 is broken, the sealed water can be recovered.

Although the embodiment of the present invention has been described above with reference to the drawings, the siphon drainage system of the present invention is not limited to the above example, and can be appropriately modified. In addition, in the explanation of an example of the cleaning method of the siphon drainage system according to the present embodiment, the siphon drainage system 10 described above was used as the siphon drainage system, but the cleaning method of the siphon drainage system according to the present embodiment. is not limited to the siphon drainage system 10, and can be modified as appropriate.

ADVANTAGE OF THE INVENTION According to this invention, the siphon drainage system which can wash the inside of piping of the upstream from the storage part of a trap, and its washing method can be provided.

10: Siphon drainage system 11: Plumbing equipment 111: Cylindrical part 112: Wall surface 113: Gentle slope part 114: Recessed part 115: Partial cylindrical part 12: First drainage pipe 13: Trap 131: Storage part 14: Vent valve 141: Movable platen 142: Fixed part 143: Valve cylinder part 144: Rubber seal part 145: Valve dome part 146: Opening part 147: Mounting part 15: Straight Pipe, 16: Horizontal pipe, 17: Vertical pipe, 18: Merging joint, 19: Merging pipe, 20: Disposer, 21: House floor panel, 22: Floor slab, 23: Plumbing hole, 24: Siphon drainage pipe 25: Connecting pipe 30: Sealing and filling mechanism 31: Holding part 311: Opening (of holding part) 32: Discharging path

Claims (7)

A siphon drainage system comprising:
A trap having a reservoir in which waste water can be collected, a vent valve provided downstream of the reservoir, and a siphon drain pipe provided downstream of the vent valve,
The vent valve can arbitrarily open and close the vent valve,
The siphon drainage system has a siphon force detection unit that detects that a siphon force is generated in the siphon drainage pipe,
the vent valve is a normally closed valve;
The siphon drainage system, wherein the siphon force detection unit detects the generation of the siphon force to maintain the closed state of the vent valve. 2. The siphonic drainage system of claim 1, wherein the vent valve is a normally closed valve, optionally operable by a user to keep the vent valve closed. A trap having a reservoir in which waste water can be collected, a vent valve provided downstream of the reservoir, and a siphon drain pipe provided downstream of the vent valve,
The vent valve can arbitrarily open and close the vent valve,
The vent valve is a normally closed valve, and the user can arbitrarily operate the vent valve to maintain the closed state,
A siphon drainage system having a seal fill mechanism for supplying seal water to the reservoir of the trap in conjunction with releasing the closed state of the vent valve. The siphon drainage system has a siphon force detection unit that detects that a siphon force is generated in the siphon drainage pipe,
the vent valve is a normally closed valve;
4. The siphon drainage system according to claim 3, wherein the siphon force detection unit detects the generation of siphon force so that the vent valve is kept closed. The siphon drainage system has a drainage detection unit that detects that drainage is not performed,
The siphon drainage system according to claim 4, wherein the maintenance of the closed state of the vent valve is canceled when the drainage detection unit detects that drainage is not performed. 2. The siphonic drainage system of claim 1, comprising a seal fill mechanism for supplying seal water to said reservoir of said trap in conjunction with said vent valve being de-maintained closed. Cleaning a siphon drain system comprising a trap with a reservoir in which waste water can collect, a normally closed vent valve downstream of said reservoir and a siphon drain pipe downstream of said vent valve. a method,
A method for cleaning a siphon drainage system, comprising the step of maintaining the closed state of the vent valve while a siphon force is being generated.

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