JP6682065B2 - Drainage pipe - Google Patents

Description

  The present invention relates to a drainage pipe for discharging drainage to a downstream side, and more specifically, when a drainage port opened on a bottom surface of a tank body is closed, water stored in the tank body is The present invention relates to a drain pipe of a tank body having an overflow mechanism that prevents the overflow pipe from overflowing from the upper edge.

  Drainage generated in the body of the washbasin, sink, bathtub or the like is discharged to the downstream side through a drainage pipe that forms a drainage flow path in communication with a drainage port opened on the bottom of the body. A drainage pipe having a structure capable of storing water or the like inside the tank body by closing the drainage outlet with a rubber stopper or a drainage plug device that remotely operates a valve is known. There is.

In the drainage pipe, in order to prevent water and the like stored in the tank body from overflowing from the upper edge of the tank body, a mechanism for adjusting the water level called an overflow mechanism is provided.
In most of the overflow mechanisms, an overflow hole is opened in the side surface of the tank body, and an overflow pipe communicating with the overflow hole is provided from the back surface of the tank body so that the drainage flow path from the overflow hole is located downstream of the drainage port. It is configured to join the drain pipe of. With this configuration, when the water level in the tank body reaches the height of the overflow hole, the stored water or the like flows into the overflow hole before it overflows the tank body beyond the upper edge of the tank body, It can be discharged from the drain pipe on the downstream side of the drain port through the overflow pipe.

However, in the above overflow mechanism, it is necessary to open the overflow hole on the side surface of the tank body, so that the design of the tank body is limited and the dirt inside the overflow hole is visible to the user. I didn't like it.
Therefore, like the drainage pipe described in Patent Document 1, a drainage pipe that can configure an overflow mechanism without providing an overflow hole has been proposed.

The drainage pipe described in Patent Document 1 is a drainage pipe that communicates with a drainage port that is opened on the bottom surface of a tank body, a water shutoff valve that blocks a flow path inside the drainage pipe, and an upstream side of the water shutoff valve. Has an overflow pipe which is branched at and is bent in a substantially L shape in cross section. The overflow pipe extends from the upstream side of the water shutoff valve in a substantially horizontal direction and then bends at a substantially right angle to raise the flow path to a predetermined height, and after the flow path bends about 180 degrees at the turnback portion, The flow channel hangs down to the downstream side, bends again in a substantially horizontal direction, and joins the drain pipe on the downstream side of the water shutoff valve. Further, the upper end (folded portion) of the overflow pipe is arranged above the bottom surface of the tank body and below the upper edge of the tank body. The overflow pipe is arranged inside a cabinet having a storage space and is invisible to the user.
In the drainage pipe described in Patent Document 1, the following flow occurs when water or the like is stored in the tank body.
First, the water shutoff valve closes the drainage flow path to start water storage. At this time, since the overflow pipe branches from above the water shutoff valve, water or the like flows into the overflow pipe. Since the overflow pipe is branched from the pipe on the downstream side of the tank body, the water pressures in the tank body and the overflow pipe are balanced and the respective water levels become equal. Therefore, when water or the like tries to be stored over the turnaround portion of the overflow pipe, the water or the like gets over (turns over) the turnaround portion and flows into the downstream side, and joins the drain pipe at the downstream side of the valve. That is, it is possible to store water or the like in the tank body up to the height at which the folded portion of the overflow pipe is provided, and when water or the like is to be stored beyond the height position of the folded portion, surplus water is overflow pipe. It is structured to be discharged to the pipe on the sewage side through.

JP, 2011-117229, A

  As described above, since the drainage pipe described in Patent Document 1 does not need to be provided with an overflow hole in the tank body, the design of facility equipment is not limited and the design is improved, but in order to construct the drainage pipe. Requires a space for accommodating the substantially L-shaped overflow pipe on the back side of the tank body or the like. Therefore, the drainage pipe described in Patent Document 1 cannot be constructed on a washbasin that does not have a space for storing drainage pipes on the back side of the tank body or a washbasin in which the tank body directly projects from the wall surface. For example, in the washbasin shown in FIG. 25, the top surface of the cabinet is formed flat for the purpose of improving the design, and the washbasin which is a bowl-shaped tank is placed on the top surface of the cabinet. Therefore, in order to dispose the drainage pipe described in Patent Document 1, it is necessary to cut out a part of the top surface of the cabinet, but this is difficult to design because it significantly impairs the design. Further, in a bathtub or the like that does not have a blinding member such as an apron, when the drainage pipe described in Patent Document 1 is provided, it becomes possible for the user to visually check, and the design is significantly impaired.

  In view of the above problems, the present invention relates to a drainage pipe that forms an overflow mechanism without providing an overflow hole in the wall surface of a tank, to a facility device in which conventional drainage pipes cannot be adopted due to structural reasons or design reasons. The issue is to provide drainage pipes that can be attached.

The present invention according to claim 1 for solving the above problems is a drainage pipe for draining a tank body,
Equipped with a water volume control valve that opens the drainage channel when the water level in the tank rises above a certain level ,
The tank body has a drain opening on the bottom surface,
A drainage pipe that communicates with the drainage port to form a drainage flow path,
The drainage channel is a first drainage channel having a water shutoff valve,
Branching from the upstream side of the water shutoff valve, consisting of a second drainage flow path having the water flow control valve,
The water shutoff valve is capable of storing water discharge and the like in the tank body by closing the first drainage flow path,
The water amount control valve is a drainage pipe that opens the second drainage flow channel when the water level in the tank body becomes a certain level or higher .

The present invention according to claim 2 is characterized in that the water flow control valve is
The drainage pipe according to claim 1, wherein the drainage pipe is urged in a direction in which the drainage flow passage is closed by repulsion or suction of a magnet.

The present invention according to claim 3 is characterized in that the water amount control valve is
The drainage pipe according to claim 1, wherein the drainage pipe is urged in a direction in which the drainage flow passage is closed by repulsion or contraction of the spring.

The present invention according to claim 4 is characterized in that the water amount control valve is
The drainage pipe according to claim 1, wherein the drainage pipe is urged in a direction in which the drainage flow passage is closed by its own weight or the weight of the weight.

The present invention according to claim 5 is a drainage pipe for draining a tank body,
Equipped with a water volume control valve that opens the drainage channel when the water level in the tank rises above a certain level,
The water amount control valve,
Has a sensor that detects the water level or water pressure at any place,
It is a drainage pipe that is movable based on information detected by the sensor to open and close the drainage flow path.

In the present invention according to claim 6, in the tank body, when the water level in the tank body becomes a certain level or more, a drainage flow path is opened by a water amount control valve to set a water storage height at which the water level is adjusted,
The drainage pipe according to any one of claims 1 to 5 , wherein the water amount control valve is arranged at a position lower than the water storage height.

According to the present invention as set forth in claim 1, since the water level in the tank body is adjusted by the water amount control valve, there is no space for storing the drainage pipe on the back side of the tank body unlike the conventional drainage pipe. It is possible to install it on a washbasin.
According to the present invention described in claims 2 to 6 , it is possible to clarify the specific configuration of the water amount control valve.

It is sectional drawing which shows the construction state of this invention. It is sectional drawing which shows the rising state of a water stop valve. It is a principal part enlarged view of FIG. It is a principal part enlarged view which shows the open state of a 1st drainage flow path. It is a principal part enlarged view which shows the open state of a 2nd drainage flow path. It is sectional drawing which shows the construction state of 2nd embodiment. It is sectional drawing which shows the rising state of a water stop valve. It is a principal part enlarged view of FIG. It is a principal part enlarged view which shows the open state of a 1st drainage flow path. It is a principal part enlarged view which shows the open state of a 2nd drainage flow path. It is sectional drawing which shows the construction state of 3rd embodiment. It is a principal part enlarged view of FIG. It is a principal part enlarged view which shows the open state of a 1st drainage flow path. It is a principal part enlarged view which shows the open state of a 2nd drainage flow path. It is sectional drawing which shows the construction state of 4th embodiment. It is a principal part enlarged view of FIG. It is a principal part enlarged view which shows the open state of a 1st drainage flow path. It is a principal part enlarged view which shows the open state of a 2nd drainage flow path. It is sectional drawing which shows the construction state of 5th embodiment. It is a principal part enlarged view of FIG. It is a principal part enlarged view which shows the operating state of a water quantity control valve. It is sectional drawing which shows the construction state of 6th embodiment. It is a principal part enlarged view of FIG. It is a principal part enlarged view which shows the open state of a 2nd drainage flow path. It is a reference drawing which shows the conventional drainage piping.

  Hereinafter, the drainage pipe of the present invention will be described with reference to the drawings. The following description is for facilitating the understanding of the embodiments, and the invention is not limited to the understanding. Further, in the following embodiments, the up, down, left and right will be described with reference to the state shown in FIG.

  As shown in FIGS. 1 and 2, the drainage pipe of this embodiment is attached to the washbasin S, and drains the drainage and the like generated inside the tank B to the downstream side.

The washbasin S is an equipment device arranged in a washroom (not shown), and includes a tank body B and a cabinet K.
The tank body B is a wash bowl in which drainage or the like is generated by use, and is placed on the top surface of the cabinet K. A drainage port B1 is opened on the bottom surface of the tank body B, and a drainage pipe 1 forming a drainage flow path is connected to the drainage port B1. A decorative plate B2 is inserted in the drainage port B1.
The cabinet K has a substantially box shape having a space for accommodating the drainage pipe 1 and the like therein, and the tank body B is placed on the top surface thereof, and the back surface of the tank body B (the right side in FIGS. 1 and 2). ), A water faucet F is provided. The top surface of the cabinet K is formed flat, and the entire circumference of the tank body B is visible to the user.

  The drainage pipe 1 is a pipe that communicates with the drainage port B1 to form a drainage flow path, and includes a drainage body 2, an overflow unit 3, a drainage plug device 13, and a drainage trap 19. The drain pipe 1 has a first drainage flow path that is opened and closed by a water shutoff valve 17 and a first drainage channel that discharges excess water in the tank body B when water or the like is stored up to a predetermined water level in the tank body B. It has two drainage channels.

  The drainage main body 2 has a substantially cylindrical shape having a flange on the upper portion, and is inserted into the drainage outlet B1. Further, the drainage main body 2 has a male screw formed on the outer circumference of the cylindrical portion, and holds the peripheral edge of the drainage outlet B1 by being screwed with a nut arranged on the back surface (lower surface) of the tank body B. A packing is arranged between the flange of the drainage body 2 and the bottom surface of the tank body B, and the drainage body 2 is connected to the tank body B in a watertight manner. Further, the lower end of the drain port main body 2 is attached to the adapter 4 by packing and nuts.

The overflow unit 3 is composed of an adapter 4 and a water amount control valve 10.
The adapter 4 has therein a valve seat 5 with which a water stop valve 17 described later abuts, and has a first drainage flow path opened and closed by the water stop valve 17. An overflow inlet 6 is opened in the lateral direction on the upstream side (upper side) of the valve seat 5, and an overflow outlet 7 is opened in the lateral direction on the downstream side (lower side) of the valve seat 5. As shown in FIG. 5, the wastewater discharged from the overflow discharge port 7 joins the first drainage flow path at the joining portion 9. Further, both the overflow inlet 6 and the overflow outlet 7 have a substantially rectangular shape in which the horizontal direction is the long diameter side, and are continuous through the folded portion 8 to form a second drainage flow path which is opened / closed by the water flow control valve 10. Is forming.
The folding | returning part 8 has the water amount control valve 10 in the inside, and the 2nd drainage flow path is closed in the state which the positive pressure and the negative pressure are not produced from the upstream side and the downstream side. In addition, the folded-back portion 8 is formed with a guide portion (not shown) to prevent the water amount control valve 10 from tilting during operation.
The water amount control valve 10 is a valve body having a water blocking surface to which packing made of rubber or the like is attached on the upstream side (left side), and a magnet 11a is attached to the downstream side (right side) of the second drainage flow. A magnet 11b is provided outside the path so as to be repulsive to the magnet 11a. That is, the water amount control valve 10 is urged in the direction of closing the second drainage flow passage by the repulsion of the magnet, and moves to the downstream side when a predetermined pressure or more is applied to open the second drainage flow passage. It has a structure. Here, the magnet 11b is connected to the valve shaft 12 having a male screw formed on its outer circumference, and is screwed with a female screw formed on the inner circumference of a nut 21 attached to the outside of the adapter 4. Therefore, the water amount control valve 10 adjusts the relative distance between the magnets 11a and 11b by rotating the knob portion, that is, the repulsive force applied to the magnets 11a, thereby adjusting the pressure required to open the second drainage flow path. It is possible to adjust.

The drain plug device 13 is a device that remotely operates the water shutoff valve 17, and includes a switch unit 14, a release wire 15, and a lever 16.
The water shutoff valve 17 is a valve body having packing fitted around it, and closes the first drainage flow path by coming into contact with the valve seat 5. The water shutoff valve 17 has a shaft portion extending vertically in the center thereof, and a float 18 is attached above the shaft portion. Further, the lower end of the shaft portion is arranged at a position where it can contact the lever 16 of the drain plug device 13. The float 18 is made of a material having a specific gravity smaller than that of water, and when the water or the like is stored on the water shutoff valve 17, the float 18 can be axially raised along the shaft portion. Further, the float 18 has a flange portion, and when rising, the flange portion comes into contact with the inner circumference of the drainage flow passage on the upstream side, and prevents dirt and the like in the drainage flow passage from flowing back to the tank body B side.
The switch unit 14 is an operation unit that manually pushes and pulls, and is arranged on the top surface of the cabinet K and on the back surface of the faucet F.
The release wire 15 is a member in which an inner wire, which is a stranded wire of metal, is slidably arranged in a tubular outer tube, and has rigidity in the axial direction and flexibility in the lateral direction. The release wire 15 has one end connected to the lower end of the switch unit 14 and the other end attached to the lever 16. The release wire 15 has a structure in which the inner wire retracts / projects in response to the pushing operation of the switch portion 14, and transmits the operation applied to the switch portion 14 to the lever 16.
The lever 16 is arranged inside the drainage pipe 1, and has a structure in which when the inner wire retracts, the end of the lever 16 rises, and when the inner wire projects, the end of the lever 16 descends.
That is, when the switch portion 14 is pulled up, the end portion of the lever 16 rises and the water shutoff valve 17 is pushed up to open the first drainage flow path. Further, when the switch portion 14 is pushed in, the end portion of the lever 16 descends, the water stop valve 17 descends by its own weight, and the first drainage flow path is closed.

  The drain trap 19 is a pipe trap having a substantially S-shape in a side view, and has an effect of forming a sealed water by storing a part of drainage therein, and preventing odors and pests from entering from the downstream side. . The drain trap 19 has its lower end connected to a pipe (not shown) and discharges the drainage flowing into the drainage pipe to the sewage side pipe.

  Below, the flow of water etc. which passes through the drainage pipe of this invention is demonstrated.

First, as shown in FIGS. 2 and 4, the flow of water and the like when the switch portion 14 is pulled up will be described. In this state, the inner wire is retracted as the switch section 14 is pulled up, and the end of the lever 16 is raised. Therefore, the water stop valve 17 is pushed up by the lever 16, and the first drainage flow path is in an open state.
When water is discharged from the faucet F while the water shutoff valve 17 is in the raised state, water discharged to the tank body B passes through the drainage port B1, the drainage port main body 2, the adapter 4, and the drainage trap 19. It is discharged to a pipe (not shown) on the sewage side. At this time, a part of the drainage flowing into the drainage trap 19 is stored on the bottom surface of the drainage trap 19 to form a sealed water.

When the switch portion 14 is pushed in from the above state, the inner wire projects toward the lever 16 side and the end portion of the lever 16 descends. Therefore, the water shutoff valve 17 descends by its own weight, and the packing of the water shutoff valve 17 contacts the valve seat 5, whereby the first drainage flow path is closed as shown in FIG. 4.
In the lowered state of the water shutoff valve 17, the water discharged from the faucet F flows into the adapter 4 from the drainage port B1 through the drainage body 2, but as shown in FIG. Since the first drainage flow path is closed, the water and the like flowing into the adapter 4 flows into the second drainage flow path from the overflow inlet 6.
However, since the flow path of the second drainage flow path is blocked by the water quantity control valve 10, the water and the like flow into the portion closed by the water quantity control valve 10, and the water and the like in the tank body B. Be stored.
Further, when water is discharged from the faucet F, as shown in FIG. 5, the water level in the tank body B rises and the float 18 rises due to buoyancy, and the flange portion of the float 18 becomes the upstream drainage channel. Contact the inner circumference. At this time, a difference occurs in the water level between the second drainage flow path and the tank B, and the pressure is applied to the water volume control valve 10 from the upstream side to the downstream side (from the left side to the right side in FIG. 3) based on the difference in the water level. Join. In the state where the pressure is smaller than the repulsive force of the magnet 11, the water amount control valve 10 keeps closed, but when water is further discharged and the water level in the tank B reaches a predetermined height, (2) The pressure based on the difference between the water levels of the drainage channel and the tank B exceeds the repulsive force of the magnet 11, and the water amount control valve 10 is pushed downstream to open the second drainage channel as shown in FIG. It Therefore, when water is further discharged from the state in which water or the like is stored in the tank B up to a predetermined water level, the water or the like in the second drainage flow path is introduced from the overflow discharge port 7 into the adapter 4 through the folding portion 8. Inflow. The water and the like that have flowed into the adapter 4 merge with the first drainage flow path at the merger 9 and are discharged to a sewage side pipe (not shown) via the drainage trap 19.
That is, when the water is stored above the predetermined water level, the surplus water and the like are all discharged to the sewage side pipe through the second drainage flow path, so that the water level of the tank B is kept constant. Excess water does not overflow from the upper edge of the tank B.
When the water level in the tank body B becomes lower than the predetermined height due to the termination of the water discharge from the faucet F, the operation of the drainage plug device 13 and the elevation of the water shutoff valve 17, the pressure due to water or the like causes the magnet 11 to move. Below the repulsive force, the water amount control valve 10 moves to the left side again due to the repulsion of the magnet 11, and closes the second drainage flow path.
When water is stored in the tank B, the float 18 rises due to buoyancy, and the flange portion abuts on the inner circumference of the upstream drainage channel, so that the second drainage channel is contaminated. -It is possible to prevent dust and the like from flowing back into the tank B. On the other hand, since the float 18 descends when pressure is applied from above, even if the float 18 is in an elevated state, it does not hinder the discharge of water or the like from the upstream side.

Although the first embodiment of the present invention is as described above, according to the present invention, by providing the water amount control valve 10 that opens the second drainage flow path when the water level in the tank body B becomes a certain level or more, (2) It becomes possible to downsize the drainage flow path, and it becomes possible to attach it to equipment equipment where conventional drainage pipes could not be adopted.
Further, in the drainage pipe of the present invention, the position of the magnet 11b can be adjusted by rotating the knob portion, and the repulsive force applied to the magnet 11a can be adjusted. That is, according to the present invention, by adjusting the magnetic force applied to the water amount control valve 10, it becomes possible to adjust the water level of water or the like that can be stored in the tank B.

  In the above-described first embodiment, the water flow control valve 10 operates substantially horizontally while keeping the inclination of the water stop surface, but a hinge portion is provided above the water stop surface so that the hinge portion rotates about the axis. The second drainage channel may be closed / opened.

  Next, a second embodiment of the present invention will be described with reference to FIGS. Since the second embodiment described below is different from the first embodiment only in the overflow unit 3, the other configurations are given the same numbers as those in the first embodiment and the description thereof is omitted. . In the second embodiment described below, as in the first embodiment, water and the like are stored up to a predetermined water level in the tank body B and the first drainage flow path that is opened and closed by the water shutoff valve 17. Incidentally, it has a second drainage channel for discharging the excess water in the tank B.

The overflow unit 3 according to the second embodiment includes an adapter 4 and a water amount control valve 10.
The adapter 4 has therein a valve seat 5 with which a water stop valve 17 described later abuts, and has a first drainage flow path opened and closed by the water stop valve 17. An overflow inlet 6 is opened in the lateral direction on the upstream side (upper side) of the valve seat 5, and an overflow outlet 7 is opened in the lateral direction on the downstream side (lower side) of the valve seat 5. As shown in FIG. 10, the wastewater discharged from the overflow discharge port 7 joins the first drainage flow path at the joining portion 9. Further, both the overflow inlet 6 and the overflow outlet 7 have a substantially rectangular shape in which the horizontal direction is the long diameter side, and are continuous through the folded portion 8 to form a second drainage flow path which is opened / closed by the water flow control valve 10. I have it.
The folding | returning part 8 has the water amount control valve 10 in the inside, and the 2nd drainage flow path is closed in the state which the positive pressure and the negative pressure are not produced from the upstream side and the downstream side. In addition, the folded-back portion 8 is formed with a guide portion (not shown) to prevent the water amount control valve 10 from tilting during operation.
The water amount control valve 10 is a valve body having a water blocking surface to which a packing made of rubber or the like is attached on the upstream side (left side), and the valve shaft extending to the outer periphery of the folded portion 8 on the downstream side (right side). 12 are provided. Further, in the water amount control valve 10, a spring 20 is arranged between the valve shaft 12 and the outer circumference of the folded portion 8. That is, the water flow control valve 10 is urged by the spring 20 in the direction to close the second drainage flow path, and moves to the downstream side when a predetermined pressure or more is applied to open the second drainage flow path. Has become. Here, the folding | returning part 8 has the nut 21 in the outer periphery, and the spring 20 can be compressed by rotating the said nut 21. Therefore, the water flow control valve 10 can adjust the repulsive force of the spring 20 by rotating the nut 21, thereby adjusting the pressure required to open the second drainage flow path.

  Below, the flow of water etc. which passes through the drainage pipe of this invention is demonstrated.

First, as shown in FIGS. 7 and 9, the flow of water and the like when the switch portion 14 is pulled up will be described. In this state, the inner wire is retracted as the switch section 14 is pulled up, and the end of the lever 16 is raised. Therefore, the water stop valve 17 is pushed up by the lever 16, and the first drainage flow path is in an open state.
When water is discharged from the faucet F while the water shutoff valve 17 is in the raised state, water discharged to the tank body B passes through the drainage port B1, the drainage port main body 2, the adapter 4, and the drainage trap 19. It is discharged to a pipe (not shown) on the sewage side. At this time, a part of the drainage flowing into the drainage trap 19 is stored on the bottom surface of the drainage trap 19 to form a sealed water.

When the switch portion 14 is pushed in from the above state, the inner wire projects toward the lever 16 side and the end portion of the lever 16 descends. Therefore, the water shutoff valve 17 is lowered by its own weight, and the packing of the water shutoff valve 17 comes into contact with the valve seat 5, so that the first drainage flow path is closed as shown in FIGS. 6 and 8. .
In the lowered state of the water shutoff valve 17, water or the like discharged from the faucet F flows into the adapter 4 from the drainage port B1 through the drainage body 2, but as shown in FIG. Since the first drainage flow path is closed, the water and the like flowing into the adapter 4 flows into the second drainage flow path from the overflow inlet 6.
However, since the flow path of the second drainage flow path is blocked by the water quantity control valve 10, the water and the like flow into the portion closed by the water quantity control valve 10, and the water and the like in the tank body B. Be stored.
When water is further discharged from the faucet F, the water level in the tank body B rises and the float 18 rises due to buoyancy, and the flange portion of the float 18 contacts the inner circumference of the upstream drainage flow passage. At this time, a difference occurs in the water level between the second drainage flow path and the tank B, and the pressure is applied to the water volume control valve 10 from the upstream side to the downstream side (from the left side to the right side in FIG. 8) based on the difference in the water level. Join. In the state where the pressure is smaller than the repulsive force of the spring 20, the water amount control valve 10 maintains the closed state, but when water is further discharged and the water level in the tank body B reaches a predetermined height, As shown in 10, the pressure based on the difference in water level between the second drainage channel and the tank B exceeds the repulsive force of the spring 20, and the water volume control valve 10 is pushed downstream to open the second drainage channel. To be done. Therefore, when water is further discharged from the state in which water or the like is stored in the tank B up to a predetermined water level, the water or the like in the second drainage flow path is introduced from the overflow discharge port 7 into the adapter 4 through the folding portion 8. Inflow. The water and the like that have flowed into the adapter 4 merge with the first drainage flow path at the merger 9 and are discharged to a sewage side pipe (not shown) via the drainage trap 19.
That is, when the water is stored above the predetermined water level, the surplus water and the like are all discharged to the sewage side pipe through the second drainage flow path, so that the water level of the tank B is kept constant. Excess water does not overflow from the upper edge of the tank B.
When the water level of the tank body B becomes lower than a predetermined height due to the termination of the water discharge from the faucet F, the operation of the drain plug device 13 and the elevation of the water shutoff valve 17, the pressure due to water or the like causes the spring 20 to move. Below the repulsive force, the water amount control valve 10 moves to the left side again due to the repulsion of the magnet 11, and closes the second drainage flow path.
When water is stored in the tank B, the float 18 rises due to buoyancy, and the flange portion abuts on the inner circumference of the upstream drainage channel, so that the second drainage channel is contaminated. -It is possible to prevent dust and the like from flowing back into the tank B. On the other hand, since the float 18 descends when pressure is applied from above, even if the float 18 is in an elevated state, it does not hinder the discharge of water or the like from the upstream side.

Although the second embodiment of the present invention is as described above, according to the present invention, by providing the water amount control valve 10 that opens the second drainage flow path when the water level in the tank body B becomes a certain level or more, (2) It becomes possible to downsize the drainage flow path, and it becomes possible to attach it to equipment equipment where conventional drainage pipes could not be adopted.
In the drainage pipe of the present invention, the repulsive force of the spring 20 can be adjusted by rotating the nut 21. That is, in the present invention, by adjusting the force applied to the water amount control valve 10, it becomes possible to adjust the water level of water or the like that can be stored in the tank body B.

  In addition, in the second embodiment, the water flow control valve 10 operates substantially horizontally while keeping the inclination of the water stop surface. However, the hinge portion is provided above the water stop surface so that the hinge portion rotates about the axis. The second drainage channel may be closed / opened.

  Next, a third embodiment of the present invention will be described with reference to FIGS. Since the third embodiment described below is different from the first embodiment only in the overflow unit 3, other configurations are given the same numbers as those in the first embodiment, and description thereof will be omitted. . In addition, in the third embodiment described below, as in the first embodiment, water and the like are stored up to a predetermined water level in the first drainage channel opened and closed by the water shutoff valve 17 and the tank body B. Incidentally, it has a second drainage channel for discharging the excess water in the tank B.

The overflow unit 3 according to the third embodiment includes an adapter 4 and a water amount control valve 10.
The adapter 4 has therein a valve seat 5 with which a water stop valve 17 described later abuts, and has a first drainage flow path opened and closed by the water stop valve 17. An overflow inlet 6 is opened in the lateral direction on the upstream side (upper side) of the valve seat 5, and an overflow outlet 7 is opened in the lateral direction on the downstream side (lower side) of the valve seat 5. As shown in FIG. 14, the drainage discharged from the overflow discharge port 7 joins the first drainage flow path at the joining section 9. Further, both the overflow inlet 6 and the overflow outlet 7 have a substantially rectangular shape in which the horizontal direction is the longer diameter side, and are bent substantially vertically at a predetermined position and then are continuous via the folded portion 8, and the water flow control valve 10 is provided. It is provided with a second drainage channel that is opened and closed by.
The folding | returning part 8 has the water amount control valve 10 in the inside, and the 2nd drainage flow path is closed in the state which the positive pressure and the negative pressure are not produced from the upstream side and the downstream side.
The water amount control valve 10 is a valve body made of a sphere having a specific gravity larger than that of water, and is seated at the downstream end of the overflow inlet 6. That is, the water amount control valve 10 is urged by its own weight in the direction of closing the second drainage flow path, and when pressure of a predetermined value or more is applied, it is pushed up to the downstream side (upward) to move, It has a structure that opens the flow path.

  Below, the flow of water etc. which passes through the drainage pipe of this invention is demonstrated.

First, as shown in FIG. 13, the flow of water or the like when the switch portion 14 is pulled up will be described. In this state, the inner wire is retracted as the switch section 14 is pulled up, and the end of the lever 16 is raised. Therefore, the water stop valve 17 is pushed up by the lever 16, and the first drainage flow path is in an open state.
When the water stop valve 17 is in the raised state and water is discharged from the faucet F, the water discharged to the tank body B passes through the drain port B1, the drain port body 2, the adapter 4, and the drain trap 19 from the drain port B1. It is discharged to a pipe (not shown) on the sewage side. At this time, a part of the drainage flowing into the drainage trap 19 is stored on the bottom surface of the drainage trap 19 to form a sealed water.

When the switch portion 14 is pushed in from the above state, the inner wire projects toward the lever 16 side and the end portion of the lever 16 descends. Therefore, the water shutoff valve 17 descends due to its own weight, and the packing of the water shutoff valve 17 comes into contact with the valve seat 5, whereby the first drainage flow path is closed as shown in FIGS. 11 and 12. .
In the lowered state of the water shutoff valve 17, water discharged from the faucet F flows into the adapter 4 from the drainage port B1 through the drainage body 2, but as shown in FIG. Since the first drainage flow path is closed, the water and the like flowing into the adapter 4 flows into the second drainage flow path from the overflow inlet 6.
However, since the flow path of the second drainage flow path is blocked by the water quantity control valve 10, the water and the like flow into the portion closed by the water quantity control valve 10, and the water and the like in the tank body B. Be stored.
When water is further discharged from the faucet F, the water level in the tank body B rises and the float 18 rises due to buoyancy, and the flange portion of the float 18 contacts the inner circumference of the upstream drainage flow passage. At this time, a difference occurs between the water levels of the second drainage flow path and the tank B, and the pressure is applied to the water volume control valve 10 from the upstream side to the downstream side (from the bottom to the top in FIG. 12) based on the difference in the water level. Join. In a state where the pressure is less than the weight of the water volume control valve 10, the water volume control valve 10 maintains the closed state, but when water is further discharged and the water level in the tank body B reaches a predetermined height, As shown in FIG. 14, the pressure based on the difference between the water levels of the second drainage channel and the tank B exceeds the own weight of the water volume control valve 10, and the water volume control valve 10 is pushed up to the downstream side (upper) to The drainage channel is opened. Therefore, when water is further discharged from the state in which water or the like is stored in the tank B up to a predetermined water level, the water or the like in the second drainage flow path is introduced from the overflow discharge port 7 into the adapter 4 through the folding portion 8. Inflow. The water and the like that have flowed into the adapter 4 merge with the first drainage flow path at the merger 9 and are discharged to a sewage side pipe (not shown) via the drainage trap 19.
That is, when the water is stored above the predetermined water level, the surplus water and the like are all discharged to the sewage side pipe through the second drainage channel, so that the water level in the tank B is kept constant. The excess water does not overflow from the upper edge of the tank B.
When the water level in the tank body B becomes lower than a predetermined height due to the termination of the water discharge from the faucet F, the operation of the drain plug device 13 and the raising of the water stop valve 17, etc., the pressure due to the water or the like is adjusted. The second drainage flow path is closed by lowering the weight of the valve 10 and lowering the water amount control valve 10.
When water is stored in the tank B, the float 18 rises due to buoyancy, and the flange portion abuts on the inner circumference of the upstream drainage channel, so that the second drainage channel is contaminated. -It is possible to prevent dust and the like from flowing back into the tank B. On the other hand, since the float 18 descends when pressure is applied from above, even if the float 18 is in an elevated state, it does not hinder the discharge of water or the like from the upstream side.

  Although the third embodiment of the present invention is as described above, according to the present invention, by providing the water amount control valve 10 that opens the second drainage flow path when the water level in the tank body B becomes a certain level or more, (2) It becomes possible to downsize the drainage flow path, and it becomes possible to attach it to equipment equipment where conventional drainage pipes could not be adopted.

  In addition, in the third embodiment, the water amount control valve 10 is a valve body formed of a sphere, but various shapes such as an ellipse and a non-circle may be adopted. Further, the water flow control valve 10 may have a hinge portion at one end, and the second drainage flow path may be closed / opened by its own weight with the hinge portion as an axis.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS. Since the fourth embodiment described below is different from the first embodiment only in the overflow unit 3 and the drain plug device 13, the same numbers are given to the other configurations as the first embodiment. And the description is omitted. In the fourth embodiment described below, as in the first embodiment, water and the like are stored up to a predetermined water level in the first drainage flow path and the tank body B that are opened and closed by the water shutoff valve 17. Incidentally, it has a second drainage channel for discharging the excess water in the tank B.

The overflow unit 3 according to the fourth embodiment includes an adapter 4 and a water amount control valve 10.
The adapter 4 has therein a valve seat 5 against which a water amount adjusting valve 10 described later abuts, and the water amount adjusting valve 10 has a water stop valve 17 therein. Therefore, the adapter 4 includes a first drainage passage opened and closed by the water shutoff valve 17 and a second drainage passage opened and closed by the water amount control valve 10.
The water amount control valve 10 is composed of a valve portion 22, a valve shaft 12, and a weight 23, and is fixed to the adapter 4 so as to be rotatable around a fulcrum 24. The valve portion 22 is a valve element having a water blocking surface to which a packing made of rubber or the like is attached on the upstream side (upper side), and has a ring shape in a plan view, and a water blocking valve 17 described later is fixed therein. There is. The valve shaft 12 is arranged so as to penetrate through the inside and outside of the adapter 4, the valve portion 22 is attached to the end portion on the inner side of the adapter 4, and the weight 23 is attached to the other end (outer side of the adapter 4). Fixed as possible. The water amount control valve 10 has the valve portion 22 urged upward by the weight of the weight 23, and closes the second drainage channel in a state where neither positive pressure nor negative pressure is generated from the upstream side and the downstream side. There is. On the other hand, when a pressure higher than a predetermined pressure is applied to the valve portion 22, the valve portion 22 rotates to the downstream side (downward) to open the second drainage flow path. Here, the water amount control valve 10 can adjust the strength of the upward pressure applied to the valve portion 22 depending on the position where the weight 23 is attached. That is, the water amount control valve 10 increases the pressure applied to the valve portion 22 by moving the weight 23 to the end side of the valve shaft 12 (the side away from the adapter 4), and moves it to the fulcrum 24 side to the valve portion 22. The pressure applied can be weakened, and the pressure required to open the second drainage flow path can be adjusted.

The drain plug device 13 is a device that remotely operates the water shutoff valve 17, and includes a switch unit 14 and a release wire 15.
The water shutoff valve 17 is a valve body having a packing fitted around it, and is disposed inside the valve portion 22 of the water volume control valve 10. When the packing comes into contact with the valve portion 22, the first drainage flow Block the road.
The switch unit 14 is an operation unit that manually pushes and pulls, and is arranged on the top surface of the cabinet K and on the back surface of the faucet F.
The release wire 15 is a member in which an inner wire, which is a stranded wire of metal, is slidably arranged in a tubular outer tube, and has rigidity in the axial direction and flexibility in the lateral direction. The release wire 15 has one end connected to the lower end of the switch unit 14 and the other end attached to the water shutoff valve 17. The release wire 15 has a structure in which the inner wire is retracted / projected according to the pushing operation of the switch portion 14, and the operation applied to the switch portion 14 is directly transmitted to the water shutoff valve 17.
That is, when the switch portion 14 is pushed in, the inner wire protrudes and pushes up the water shutoff valve 17, whereby the water shutoff valve 17 is separated from the valve portion 22, and the first drainage flow path is opened. Further, when the switch portion 14 is pulled up, the inner wire is retracted, and the water shutoff valve 17 is pulled downward, so that the water shutoff valve 17 is lowered and the first drainage flow path is closed.

  Below, the flow of water etc. which passes through the drainage pipe of this invention is demonstrated.

First, as shown in FIG. 17, the flow of water or the like when the switch portion 14 is pushed will be described. In this state, the inner wire protrudes as the switch portion 14 is pushed in, and the water stop valve 17 is pushed up by the protrusion to open the first drainage flow path.
When the water stop valve 17 is in the raised state and water is discharged from the faucet F, the water discharged to the tank body B passes through the drain port B1, the drain port body 2, the adapter 4, and the drain trap 19 from the drain port B1. It is discharged to a pipe (not shown) on the sewage side. At this time, a part of the drainage flowing into the drainage trap 19 is stored on the bottom surface of the drainage trap 19 to form a sealed water.
At this time, in the water amount control valve 10, the valve portion 22 is in contact with the valve seat 5, and the second drainage flow path is in a closed state.

When the switch portion 14 is pulled up from the above state, the inner wire retracts to the switch portion 14 side, and the water shutoff valve 17 descends. Therefore, the packing of the water shutoff valve 17 comes into contact with the valve portion 22 of the water flow control valve 10, whereby the first drainage flow path is closed, as shown in FIGS. 15 and 16.
In the lowered state of the water shutoff valve 17, water discharged from the faucet F flows into the adapter 4 from the drainage port B1 through the drainage port main body 2, but as shown in FIG. Since the first drainage flow passage is closed and the second drainage flow passage is closed by the water amount control valve 10, the water or the like is stored in the tank body B.
When water is further discharged from the faucet F, the water level in the tank body B rises. At this time, pressure is applied to the valve portion 22 of the water amount adjusting valve 10 from the upstream side to the downstream side (from the upper side to the lower side in FIG. 16) by the water stored above the water amount adjusting valve 10. In a state where the pressure is small with respect to the upward pressure applied to the valve portion 22 by the weight 23, the water amount control valve 10 maintains the second drainage flow passage closed, but further water discharge is performed, and the tank body B 18, when the water level reaches a predetermined height, the pressure based on the water level stored on the water volume control valve 10 exceeds the pressure by the weight 23, and the water volume control valve 10 moves downstream. When pushed and rotated, the second drainage channel is opened. Therefore, when the water is further discharged from the state where the water or the like is stored in the tank body B up to the predetermined water level, the water or the like in the second drainage channel pushes down the valve portion 22 and the drainage trap 19 is used to drain the water. Is discharged to the pipe (not shown).
That is, when the water is stored above the predetermined water level, the surplus water and the like are all discharged to the sewage side pipe through the second drainage flow path, so that the water level of the tank B is kept constant. Excess water does not overflow from the upper edge of the tank B.
When the water level of the tank body B becomes lower than the predetermined height due to the termination of the water discharge from the faucet F, the operation of the drain plug device 13 and the elevation of the water stop valve 17, etc. Below the pressure, the valve portion 22 rises again due to the weight of the weight 23, and closes the second drainage flow path.

Although the fourth embodiment of the present invention is as described above, according to the present invention, by providing the water amount control valve 10 that opens the second drainage flow channel when the water level in the tank body B becomes a certain level or more, (2) It becomes possible to downsize the drainage flow path, and it becomes possible to attach it to equipment equipment where conventional drainage pipes could not be adopted.
In addition, in the fourth embodiment, since the first drainage flow path and the second drainage flow path are formed in the same pipe, it is not necessary to provide a pipe for the second drainage flow path.

  Next, a fifth embodiment of the present invention will be described with reference to FIGS. In addition, since the fifth embodiment described below is attached to the wash basin S and the bath B similar to the first embodiment, the wash basin S and the bath B have the same reference numerals as those of the first embodiment. Will be omitted and the description thereof will be omitted, and only the drain pipe 1 communicating with the drain port B1 of the tank body B will be described.

  The drainage pipe 1 is a pipe that communicates with the drainage port B1 to form a drainage flow path, and includes a drainage port main body 2, a water amount control valve 10, and a drainage trap 19. The water amount control valve 10 in this embodiment also serves as the water stop valve 17.

  The drainage main body 2 has a substantially cylindrical shape having a flange on the upper portion, and is inserted into the drainage outlet B1. Further, the drain port main body 2 has a valve seat 5 with which the water amount control valve 10 abuts, and a male screw is formed on the outer periphery of the tubular portion, and a nut arranged on the back surface (bottom surface) of the tank body B and By screwing, the peripheral edge of the drainage port B1 is clamped. A packing is arranged between the flange of the drainage body 2 and the bottom surface of the tank body B, and the drainage body 2 is connected to the tank body B in a watertight manner. Further, the lower end of the drainage port main body 2 is attached to the drainage trap 19 by a packing and a nut.

The water amount control valve 10 is a valve body composed of a valve portion 22 having packings fitted around the valve portion, and a valve shaft 12 extending from the back side of the valve portion 22. The valve shaft is fixed to the drainage main body 2. . The valve shaft 12 is internally provided with a lock mechanism (not shown) and a motor (not shown), and the valve portion 22 moves up / down every time a pushing operation is applied to the valve portion 22, so that packing is performed. Can repeatedly contact / separate with respect to the valve seat 5, and the contact / separation state can be held by the lock mechanism. Further, the valve portion 22 has a water pressure sensing mechanism 25 inside.
The water pressure sensing mechanism 25 is a device that detects the water pressure applied to the valve portion 22 when water or the like is stored inside the tank B, and drives the motor when the water pressure of a predetermined amount or more is applied to the valve portion 22. Then, the valve portion 22 is raised. Then, when the water pressure applied to the valve portion 22 becomes lower than a predetermined value, the motor can be driven again to lower the valve portion 22 and bring the packing into contact with the valve seat 5.

  The drain trap 19 is a pipe trap having a substantially S-shape in a side view, and has an effect of forming a sealed water by storing a part of drainage therein, and preventing odors and pests from entering from the downstream side. . The drain trap 19 has its lower end connected to a pipe (not shown) and discharges the drainage flowing into the drainage pipe to the sewage side pipe.

  Below, the flow of water etc. which passes through the drainage pipe of this invention is demonstrated.

  First, as shown in FIG. 21, the flow of water and the like in a state where the water amount control valve 10 moves up and is separated from the valve seat 5 will be described. In this state, the drainage channel formed inside the drainage port body 2 is open.

When the water amount adjusting valve 10 is in the raised state, the lock mechanism is engaged with a gear (not shown) disposed inside, so that the water amount adjusting valve 10 is in the raised state, that is, the valve portion 22 is separated from the valve seat 5. Holding
When water is discharged from the faucet F when the water amount control valve 10 is in the raised state, water discharged to the tank B passes through the drain port B1 and the drain port main body 2 and the drain trap 19 to the sewage side. It is discharged to a pipe (not shown). At this time, a part of the drainage flowing into the drainage trap 19 is stored on the bottom surface of the drainage trap 19 to form a sealed water.

When a pushing operation is applied to the valve portion 22 from the above state, the valve portion 22 is lowered and the lowered state is held by the lock mechanism. Therefore, when the packing of the valve portion 22 abuts on the valve seat 5, the drainage passage formed inside the drainage body 2 is closed as shown in FIG. That is, in this embodiment, the water amount control valve 10 also functions as the water shutoff valve 17 that closes the drainage flow path.
In the lowered state of the water amount adjusting valve 10, the drainage flow passage is closed by the water amount adjusting valve 10, so that the water discharged from the faucet F is stored in the tank body B.
When water is continuously discharged from the faucet F and the water level in the tank body B exceeds a predetermined height, the water pressure sensing mechanism 25 detects the water level in the tank body B from the water pressure applied to the valve portion 22 and drives the motor. Let The valve portion 22 is raised by driving the motor, the drainage flow path is opened, and the water and the like in the tank body B is discharged to the sewage side pipe (not shown) through the drainage port body 2 and the drainage trap 19. The state in which the valve portion 22 is lifted by driving the motor is the same as that in FIG. 21, and therefore its description is omitted.
That is, when the water is stored above the predetermined water level, the water pressure sensing mechanism 25 raises the valve portion 22 and the surplus water is discharged to the sewage side pipe, so that the water level of the tank body B is kept constant. As a result, the excess water will not overflow from the upper edge of the tank B.
Then, the water discharge from the faucet F is finished, the drain plug device 13 is operated, and the water volume control valve 10 rises, so that the water level in the tank body B becomes lower than a predetermined height and the water pressure applied to the valve portion 22 is reduced. When the pressure falls below a predetermined level, the water pressure sensing mechanism 25 drives the motor again to lower the valve portion 22 and bring the packing into contact with the valve seat 5 to close the drainage flow path.

Although the fifth embodiment of the present invention is as described above, according to the present invention, by providing the water amount control valve 10 that opens the drainage passage when the water level in the tank body B becomes a certain level or more, the conventional drainage It is possible to add an overflow mechanism to equipment that could not use piping.
Further, in the drainage pipe of the present invention, it is not necessary to separately provide the second drainage flow path constituting the overflow mechanism as in the above-described embodiments.

In addition, in the fifth embodiment, the water amount control valve 10 (stop valve 17) includes the water pressure sensing mechanism 25, and the water level in the tank body B is sensed by the water pressure applied on the valve portion 22. In place of the water pressure sensing mechanism 25, a water level sensing mechanism for sensing the water level in the tank B may be provided to directly sense the water level and drive the motor to raise / lower the valve portion 22. good.
Further, the water amount adjusting valve 10 does not necessarily have to serve as the water shutoff valve 17, and the water shutoff valve 17 may be separately provided in addition to the water amount adjusting valve 25 having the water pressure sensing mechanism 25 or the water level sensing mechanism. In this case, the tank body B may have two drain ports B1 on the bottom surface.

  Next, a sixth embodiment of the present invention will be described with reference to FIGS. In addition, since the sixth embodiment described below is attached to the wash basin S and the bath B similar to the first embodiment, the wash basin S and the bath B have the same reference numerals as those of the first embodiment. Will be omitted and the description thereof will be omitted, and only the drain pipe 1 communicating with the drain port B1 of the tank body B will be described. In addition, in the sixth embodiment described below, water and the like are stored up to a predetermined water level in the tank body B and the first drainage flow path that is opened and closed by the water shutoff valve 17, as in the first embodiment. Incidentally, it has a second drainage channel for discharging the excess water in the tank B.

  The drainage pipe 1 is a pipe that communicates with the drainage port B1 to form a drainage flow path, and includes a drainage body 2, a water shutoff valve 17, a water amount control valve 10, and a drainage trap 19.

  The drainage main body 2 has a substantially cylindrical shape having a flange on the upper portion, and is inserted into the drainage outlet B1. Further, the drainage main body 2 has a valve seat 5 with which the water shutoff valve 17 abuts, a male screw is formed on the outer periphery of the tubular portion, and a nut arranged on the back surface (bottom surface) of the tank body B and By screwing, the peripheral edge of the drainage port B1 is clamped. A packing is arranged between the flange of the drainage body 2 and the bottom surface of the tank body B, and the drainage body 2 is connected to the tank body B in a watertight manner. Further, the lower end of the drainage port main body 2 is attached to the drainage trap 19 by a packing and a nut.

  The water shutoff valve 17 includes a valve portion 22 made of an elastic material such as silicon or rubber, a main body portion 27 made of a hard resin material, and a chain portion 28 mounted above the main body portion 27. The valve portion 22 is provided on the outer periphery of the main body portion 27, and the valve portion 22 contacts the valve seat 5 of the drainage port main body 2 to seal the drainage flow channel in a watertight manner. The main body 27 has an opening at the center to which the water amount control valve 10 described later is attached. The chain portion 28 is a ball chain having one end connected to the main body portion 27 and the other end connected to the tank body B.

  The water flow control valve 10 is made of an elastic material such as silicon or rubber, has a funnel shape in a front view in which one end of a cylinder is overlapped, has a drainage channel inside, and has a mounting portion 29, an inclined surface 30, and an opening / closing. It is composed of a part 31. The mounting portion 29 is fitted to a convex portion formed on the inner circumference of the main body portion 27 of the water shutoff valve 17, which is the upper end of the water flow control valve 10. The inclined surfaces 30 are provided on both side surfaces of the water flow control valve 10 so as to extend from the lower side of the mounting portion 29 toward the downstream side, and one inclined surface 30 is formed so as to gradually approach the opposed inclined surface 30. There is. The opening / closing part 31 is formed at the lower end of the water amount adjusting valve 10, and the inner peripheral surfaces of the inclined surface 30 facing each other abut on each other on the central axis of the water amount adjusting valve 10 and extend vertically in the abutting state. It is configured by That is, the opening / closing part 31 maintains the closed state in the state where neither the positive pressure nor the negative pressure is applied from the upstream side and the downstream side.

  The water amount control valve 10 has a structure in which the opening / closing portion 31 is expanded from the inside when a pressure (water pressure or the like) higher than a predetermined value is applied from the upstream side to open the flow path. That is, in the present embodiment, the drain outlet main body 2 forms therein a first drainage flow path that is opened and closed by the water shutoff valve 17, and the water volume control valve 10 attached to the water shutoff valve 17 includes the tank body B. A second drainage channel is formed to discharge excess water in the tank B when water or the like is stored up to a predetermined water level inside.

  The drain trap 19 is a pipe trap having a substantially S-shape in a side view, and has an effect of forming a sealed water by storing a part of drainage therein, and preventing odors and pests from entering from the downstream side. . The drain trap 19 has its lower end connected to a pipe (not shown) and discharges the drainage flowing into the drainage pipe to the sewage side pipe.

  Below, the flow of water etc. which passes through the drainage pipe of this invention is demonstrated.

  First, the flow of water or the like when the water shutoff valve 17 is separated from the valve seat 5 will be described. In this state, the drainage channel formed inside the drainage port body 2 is open.

  When the water stop valve 17 is separated from the valve seat 5, when water is discharged from the faucet F, water discharged to the tank body B flows into the first drainage flow path from the drainage port B1. After passing through the drainage port main body 2 and the drainage trap 19, the water is discharged to a pipe (not shown) on the sewage side. At this time, a part of the drainage flowing into the drainage trap 19 is stored on the bottom surface of the drainage trap 19 to form a sealed water.

When the water shutoff valve 17 is attached to the drain port body 2 and the valve portion 22 is brought into contact with the valve seat 5 from the above state, the drainage flow passage in the drain port body 2 is closed as shown in FIG. It becomes a state. At this time, the first drainage flow passage is closed by the water stop valve 17, and the second drainage flow passage is closed by the water amount control valve 10.
In the state in which the water shutoff valve 17 is attached to the drainage main body 2, the water and the like discharged from the faucet F is stored in the tank body B because the water shutoff valve 17 closes the first drainage flow path. To be done. At this time, when the pressure applied on the water amount control valve 10 based on the water level in the tank B is lower than the pressure at which the opening / closing part 31 can be closed, the opening / closing part 31 maintains the closing.
When water is continuously discharged from the faucet F and the water level in the tank body B exceeds a predetermined height, the opening / closing section 31 can close the pressure applied on the water volume control valve 10 based on the water level in the tank body B. Over pressure. At this time, the opening / closing part 31 is spread from the inside by the pressure, and as shown in FIG. 23, the opening / closing part 31 is opened and the second drainage flow path is opened. Therefore, when water is discharged further from the state where water or the like is stored in the tank B up to a predetermined water level, surplus water or the like flows in from the second drainage channel and passes through the drainage main body 2 and the drainage trap 19. It is discharged to a pipe (not shown) on the sewage side.
That is, when the water is stored above the predetermined water level, the surplus water and the like are all discharged to the sewage side pipe through the second drainage channel, so that the water level in the tank B is kept constant. The excess water does not overflow from the upper edge of the tank B.
When the water level in the tank body B becomes lower than a predetermined height due to the end of water discharge from the faucet F, the water stop valve 17 being pulled up, or the like, the pressure due to water or the like falls below the pressure at which the opening / closing part 31 can be closed. The second drainage flow path is closed by closing the opening / closing portion 31 by its own elasticity.

Although the sixth embodiment of the present invention is as described above, according to the present invention, by providing the water amount control valve 10 that opens the second drainage flow path when the water level in the tank body B becomes a certain level or more, (2) It becomes possible to downsize the drainage flow path, and it becomes possible to attach it to equipment equipment where conventional drainage pipes could not be adopted.
Further, in the present invention, the overflow mechanism can be retrofitted to the equipment only by attaching the water shutoff valve 17 having the water flow control valve 10.

  In the sixth embodiment of the present invention, the water level in the tank B is maintained by keeping the opening / closing part 31 of the water quantity control valve 10 arranged inside the water shutoff valve 17 closed. . Therefore, by replacing the water amount control valve 10 attached to the water shutoff valve 17, the water level that can be stored in the tank B can be changed appropriately. For example, if the pressure required to spread the opening / closing portion 31 is high, such as when the water amount control valve 10 having high hardness is attached, the water level that can be stored in the tank body B is high.

Although the respective embodiments of the present invention have been described above, the present invention is not limited to the forms described in the respective embodiments, and can be appropriately modified without departing from the gist of the invention. For example, in the drainage pipe described in the third embodiment, since air is trapped in the flow passage between the water amount control valve 10 and the drain trap 19, a vent valve is provided in the drainage flow passage to The structure may be such that air is discharged into the cabinet K.
Further, the present invention may be applied to a wash basin having a shape in which the wash bowl directly projects from the wall surface, in addition to the wash basin having the shapes described in the above embodiments. Further, the tank B is not limited to the wash bowl, but may be a sink of a sink or a bathtub of a bathroom.

1 Drain Pipe 2 Drain Port Body 3 Overflow Unit 4 Adapter 5 Valve Seat 6 Overflow Inlet 7 Overflow Discharge Port 8 Folding Part 9 Confluence Part 10 Water Volume Control Valves 11a, 11b Magnet 12 Valve Shaft 13 Drain Plug Device 14 Switch Part 15 Release Wire 16 Lever 17 Water Stop Valve 18 Float 19 Drain Trap 20 Spring 21 Nut 22 Valve Part 23 Weight 24 Support Point 25 Water Pressure Sensing Mechanism 27 Main Body 28 Chain Part 29 Mounting Part 30 Sloping Surface 31 Open / Close S Washbasin B Tank Body B1 Drain Port B2 Decorative board F Faucet K Cabinet

Claims (6)

A drainage pipe for draining the tank body,
Equipped with a water volume control valve that opens the drainage channel when the water level in the tank rises above a certain level ,
The tank body has a drain opening on the bottom surface,
A drainage pipe that communicates with the drainage port to form a drainage flow path,
The drainage channel is a first drainage channel having a water shutoff valve,
Branching from the upstream side of the water shutoff valve, consisting of a second drainage flow path having the water flow control valve,
The water shutoff valve is capable of storing water discharge and the like in the tank body by closing the first drainage flow path,
The drainage pipe, wherein the water amount control valve opens the second drainage flow path when the water level in the tank body becomes a certain level or more. The water amount control valve,
The drainage pipe according to claim 1, wherein the drainage pipe is urged in a direction in which the drainage flow passage is closed by repulsion or suction of a magnet. The water amount control valve,
The drainage pipe according to claim 1, wherein the drainage pipe is urged in a direction in which the drainage flow passage is closed by repulsion or contraction of the spring. The water amount control valve,
The drainage pipe according to claim 1, wherein the drainage pipe is urged in a direction in which the drainage flow passage is closed by its own weight or the weight of the weight. A drainage pipe for draining the tank body,
Equipped with a water volume control valve that opens the drainage channel when the water level in the tank rises above a certain level,
The water amount control valve,
Has a sensor that detects the water level or water pressure at any place,
A drainage pipe that is movable based on information detected by the sensor to open and close a drainage flow path. The tank body has a water storage height at which the water level is adjusted by opening the drainage flow path by the water amount control valve when the water level in the tank body exceeds a certain level,
The drainage pipe according to any one of claims 1 to 5 , wherein the water amount control valve is arranged at a position lower than the water storage height.

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