JP2011117229A - Overflow device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain pipe in a tank body, which can properly discharges overflowed drain water without providing a ventilation hole or the like in an overflow pipe, in the drain pipe in the tank body for draining the overflowed water without forming an overflow drain port formed in the tank body such as a washstand, a sink and a bathtub. <P>SOLUTION: The drain pipe for drainage from the tank body B includes: the drain pipe 5 communicating with the drain port 1 opened on the bottom surface of the tank body B; a block valve 2 blocking a flow channel inside the drain pipe 5; the overflow pipe 3 sealed to the inside and outside of the drain pipe branched upstream of the block valve 2 of the drain pipe 5, with its part disposed above the bottom surface of the tank body B and folded back below the upper edge of the tank body B to be connected to the downstream side of the block valve 2; and a non-sealing-water-type drain trap 10 provided downstream the merging portion of the drain pipe with the overflow pipe 3, and having no water sealing. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drainage pipe attached to a tank body such as a wash basin, a bathtub, and the like. More specifically, when the drainage port of the tank body is closed, the drainage accumulated in the tank body is the upper edge of the tank body. It is related with the drainage piping of the tank which adopted the overflow piping which prevents overflowing.

To prevent the drainage collected in the tank from overflowing from the upper edge of the tank body when the drain outlet is closed with a rubber plug, etc. An overflow pipe is provided to discharge the body drainage.
Many of such overflow pipes are configured to provide an overflow drain port on the side surface of the tank body, and join the drainage from the overflow drainage port to the drainage channel from the drainage port. By configuring in this way, if the accumulated water in the tank exceeds the water level of the overflow drain, before overflowing outside the tank beyond the upper edge of the tank, the overflow drain is connected to the drain pipe on the sewage side in advance. It can be discharged.
However, the drainage piping of the tank body provided with the overflow piping as described above has the following problems.
Problems 1. It is necessary to provide an opening to provide an overflow drain on the side of the tank body.
Problem 2. It is necessary to connect an overflow drain pipe communicating with the drain pipe of the drain port on the bottom of the tank body to the overflow drain port.
Problem 3. The design of the tank body is poor, such as the user of the tank body visually observing the inside of the overflow drainage port where scales or filth in the drainage adheres.

In order to solve such a problem, Patent Document 1 proposes a drainage pipe for a tank body having an overflow pipe as described below.
Below, the conventional example of the drainage piping of the tank body provided with overflow piping is demonstrated, referring drawings.
The conventional drainage pipe of the tank shown in FIGS. 8 to 11 is composed of members such as a drainage plug body, a shut-off valve, a joint pipe provided with an overflow pipe, and a sealed drainage trap pipe. The structure of each member is described below.
The blocking valve includes a disk-shaped valve portion, a support shaft that passes through the center of the valve portion, and a locking arm provided on a side surface of the support portion.
The drain plug body is a substantially cylindrical member, and a drain outlet is formed at the upper inner edge of the cylinder and a drain passage is formed therein, and the outer peripheral surface of the upper edge is continuous along the peripheral edge in the outer peripheral direction. And a flange portion provided so as to protrude, and a male screw is provided on the outer peripheral lower surface. Furthermore, the drainage flow path is provided with a locking portion for locking and fixing the locking rod of the support shaft.
The joint pipe is a substantially cylindrical member, and has a female thread that engages with the male thread of the drain plug body in the water passage section inside the joint pipe, and prevents water from passing when the valve part of the shut-off valve is mounted. It comprises a valve seat part. The joint pipe communicates with an overflow drain provided on the upstream side of the valve seat, an overflow junction provided on the downstream side of the valve seat, and an overflow drain and overflow junction. And an overflow pipe configured in a substantially L shape, having a folded portion that is folded back at a position higher than the bottom surface of the tank body and lower than the upper edge of the tank body. Note that a vent hole for venting is formed above the folded portion of the overflow pipe.
A sealed water drain trap pipe is a member in which a tubular body is bent into an S-shape, and a portion in which drainage is always collected by using the bending is provided (this water is “sealed”). The upstream side is connected to the drain plug body, and the downstream side is connected to the sewage side pipe.
In addition, the wash bowl of the wash basin, which is a tank body in which the drain pipe of this conventional tank body is constructed, is a tank body that is open at the top, and has a mounting hole for attaching a drain plug body to the bottom surface. .

When constructing the drainage pipe of the tank body configured as above in the wash bowl,
First, the cylindrical portion of the drain plug body is inserted through the mounting hole, and the lower surface of the flange portion is brought into contact with the upper surface of the mounting hole. Next, from the bottom surface of the tank body, the female thread of the joint pipe is screwed into the male thread of the drain plug body through the packing, and the periphery of the mounting hole is sandwiched between the flange section bottom surface and the joint pipe upper edge through the packing. Let the drain plug body and the joint pipe be fixed. At this time, it is arranged and fixed so that the folded portion of the overflow pipe is folded at a position higher than the bottom surface of the tank body and at a position lower than the upper edge of the tank body.
Furthermore, after connecting the lower end of the joint pipe and the underfloor pipe on the sewage side via a sealed drain trap pipe, a shut-off valve is arranged from the drain outlet to the inside of the drain plug body or inside the joint pipe, The construction of the drainage pipe for the tank body with the overflow pipe to the wash bowl is completed.

When using the drainage pipe of the tank body with the overflow pipe constructed as described above, as shown in FIG. 8, first, the locking arm of the closing valve is mounted and locked on the locking portion, and the valve portion is A state in which the joint pipe is not in contact with the valve seat, that is, a state in which the passage through the joint pipe from the drain port almost linearly to the sealed trap member is not blocked (hereinafter referred to as “opened state”). ). In this state, the drainage generated in the tank passes through the drain plug body from the drain outlet, passes almost straight up and down through the joint pipe without passing through the overflow pipe side, and enters the sealed drain trap pipe. Is discharged to the sewage side. At this time, drainage accumulates at a bent portion in the sealed water drain trap pipe to form sealed water. Since this sealed water seals the inside of the sealed drainage trap pipe with the inside of the sealed drainage trap pipe always full, odors and pests from the sewage side can no longer pass through the sealed part, Backflow of odors and pests to the indoor side is prevented.
Next, as shown in FIG. 9, a state in which the mounting locking state between the locking arm and the locking portion is released and the closing valve is brought into contact with the valve seat (hereinafter referred to as “capped state”). To do. In this state, the flow path that linearly flows from the upper part to the lower part in the joint pipe is blocked by the shut-off valve. Therefore, the drainage does not flow linearly from the upper part to the lower part of the cylindrical part inside the joint pipe. It is possible.
For this reason, in this closed state, the drainage of the tank body that has flowed from the drainage port passes through the inside of the drainage plug body, flows into the joint pipe, and then flows into the overflow pipe side from the overflow drainage port. At this time, as described above, the overflow pipe is configured in a substantially U shape that is folded back at a position where the upper edge is higher than the bottom surface of the tank body and lower than the upper edge of the tank body. As described above, the water level of the drainage rises in the wash bowl and the overflow pipe, which are tank bodies, to the folded portion of the overflow pipe.
When drainage rises to the folded part of the overflow pipe, the drainage overflows the folded part and flows downstream, passes through the lower end of the joint pipe from the overflow junction, passes through the sealed drain trap pipe, and is discharged to the sewage side. Is done. In this way, since the drainage overflows and is discharged from the folded portion of the overflow pipe, the drainage in the wash bowl can be drained without accumulating above the folded portion of the overflow pipe.
Further, similarly to the above-described open state, drainage is accumulated by use at the bent portion in the sealed water drain trap pipe to form sealed water.
In the drainage pipe of the tank body provided with the overflow pipe configured in this way, it is not necessary to provide an overflow drainage port on the side surface of the tank body. Thru problem 3. All the problems described in the above can be solved.

JP 2004-183225 A

In the conventional drainage pipe of the tank body, the overflow pipe is provided with a vent hole. The reason why the vent pipe is provided with the overflow pipe as described above is as follows.
As shown in FIG. 11 to FIG. 13, in a drainage pipe of a tank body having a sealed drainage trap pipe without a vent, the tank body is used at least once and sealed in the sealed drainage trap pipe. When water is formed, the inside of the drain pipe is sealed, and the air cannot be freely vented from the drain port to the sewage side. In this state, as described in paragraph 0005, when the drainage pipe is closed and drainage is allowed to flow from the overflow drainage port to the overflow pipe side, as shown in FIG. 12, the drainage reservoir is an L-shaped bent part. At this point, at least part of the overflow pipe is filled with drainage and is sealed with water. For this reason, the air that was originally inside the overflow pipe is sealed by the full part of the overflow pipe on the upstream side and the sealed water of the sealed drain trap pipe on the downstream side. It collects as an air reservoir until the sealed water upstream.
In order to drain the overflow piping from this state, it is necessary for the drainage to flow through the air reservoir. As shown in FIG. 12, in order for the drainage to flow further from the state where the water level on the upstream side of the overflow pipe is the same level as the inside of the tank body, it is necessary to push out the air pool. It has reached the sealed water surface of the sealed drain trap pipe, and there is no other exhausted part.
For this reason, in order to drain the overflow pipe and the sealed water portion from the state shown in FIG. 12, the upstream water surface and the downstream water surface are equal, and the water surface of the overflow pipe is equal to the water level of the accumulated water in the tank. In this case, the upstream side of the sealed water is pressurized, and the air needs to push up the sealed water on the upstream side.
Here, for example, in order to produce a height difference corresponding to the length a on the sealed water surface, it is necessary to apply a larger amount of water pressure to the tank body by that amount. Specifically, as shown in FIG. 13, the water surface in the tank is located above the folded portion of the overflow pipe by the height difference a of the sealed water surface, so that the length a is added to the sealed water surface. Water pressure sufficient to produce a difference in height is generated on the tank body side.
For the same reason, in order for the wastewater in the overflow pipe to be drained away from the air pool, or for the air pool to be pushed out into the drainage of the overflow pipe to completely lift the sealed water and exhaust downstream, The difference in height between the water level in the tank and the water level in the overflow pipe (the water level at the folded part) is the difference in height between the upper end and the lower end of the sealed drain trap pipe (hereinafter referred to as the upper end to the lower end of the sealed drain trap pipe). The height difference between the two is called “sealed water core”).
As shown in FIG. 13, if the height difference between the sealing wicks is length A, the drainage will collect air in the tank if the height difference between the water level in the tank and the water level in the overflow pipe is not more than length A. If the upper edge of the tank body is lower than the height of the water surface inside the overflow pipe plus the length A, the overflow pipe will be discharged. There arises a problem that drainage overflows from the tank body before drainage from the tank occurs.
If the shape including the overall height of the tank body and the shape and dimensions of the sealed drainage trap pipe are clear in advance, the difference in the water level of the sealed drainage trap pipe is subtracted from the upper edge of the tank body based on that. The above-mentioned problem can be solved by designing and manufacturing the overflow piping. However, with this method, the overflow piping must be newly designed for each tank shape, and the versatility is lost. , Product management becomes difficult, and product unit price is too high.
If the height until the return of the overflow pipe is lowered so that it can be applied to any depth of tank body, tanks that cannot store drainage inside the tank body with sufficient depth. There are problems such as becoming drainage piping of the body.
For this reason, Patent Document 1. In the drainage pipe of the tank body provided with the overflow pipe described in 1., a vent is provided above the folded part of the overflow pipe, and the air pool is sealed by discharging the air reservoir in the overflow pipe to the outside from this vent. It is configured to be discharged without passing through the water portion.

However, by providing a vent hole that penetrates the inside and outside of the overflow pipe in this way, the drainage in the overflow pipe jumps out of the overflow pipe due to the momentum of the drainage, contaminating the inside of the cabinet of the wash basin, and conversely, dust etc. In the worst case, the overflow piping may be blocked by being drawn into the overflow piping (negative pressure is generated in the drainage piping during drainage, and the surrounding air is drawn in, so dust in the air is likely to be drawn in. ).
Further, when the inside and outside of the overflow pipe are in a vented state, there has been a problem that the noise of drainage such as “gobogobo” leaks from the vent hole which is the opening portion and gives discomfort to the user of the tank body. Although the problem can be solved by arranging an exhaust valve that operates by air pressure etc. in this vent, the product unit price increases due to the increase in the number of members due to the adoption of the exhaust valve, and the labor of member management is reduced. It could not be said that it is a suitable solution because the drainage of the tank body may overflow if the exhaust valve increases and the exhaust valve breaks down.
The present invention has been devised to solve the above problems, and is applied to a tank body such as a wash basin, a sink, a bathtub, etc., and a tank body that performs overflow drainage without providing an overflow drain port in the tank body In this drainage pipe, it is possible to provide a drainage pipe for a tank body that can discharge overflow drainage well without providing a vent or the like in the overflow pipe.

The present invention according to claim 1 is a drain pipe for draining a tank body,
A drain pipe that communicates with the drain port 1 opened at the bottom of the tank body, a blocking valve 2 that closes the flow path inside the drain pipe, and a drain pipe that branches upstream of the blocking valve 2. , A part of which is disposed above the bottom surface of the tank body and is folded back below the upper edge of the tank body and connected to the downstream side of the shutoff valve 2, and is sealed against the inside and outside of the drainage pipe. It is composed of an overflow pipe 3 and a non-sealed drain trap having no sealing water, which is provided on the downstream side of the junction of the drain pipe with the overflow pipe 3, This is the drainage pipe of the tank body.
The “overflow pipe 3 sealed with respect to the inside and outside of the drain pipe” as used herein refers to “the inside of the drain pipe and the outside in the overflow pipe 3 portion without forming an opening or the like on the side surface of the overflow pipe 3. Does not mean that, for example, the overflow pipe 3 is sealed against the drain pipe and no water is passed.

  According to a second aspect of the present invention, the non-sealed drain trap is made of a material having a substantially cylindrical shape and flexibility, and the cylindrical body is formed by contacting the inner surfaces of a part of the cylindrical body. The cylinder is closed and elastically deformed with respect to the pressure of the fluid that flows to one side of the cylinder, opens inside the cylinder and allows the fluid to pass, and against the pressure of the fluid that attempts to flow to the other side of the cylinder Is a drainage pipe for a tank body according to paragraph 0009, which is a self-sealing trap that maintains a closed state and prevents passage of fluid.

  The present invention according to claim 3 is a case where the non-sealed drain trap is a hard pipe provided with a cylindrical body portion, and the hard pipe is normally closed and a certain pressure is applied to the upstream side. The drainage pipe for a tank body according to paragraph 0009, wherein the drainage pipe is a backflow prevention valve comprising a valve body 18 that is opened to allow drainage from upstream to downstream.

  According to a fourth aspect of the present invention, in the drainage pipe of the tank body, any one of the paragraphs 0009 to 0011, wherein the block valve 2 is a remote-operated block valve 2 that is opened and closed by remote control. It is the drainage piping of the tank body as described in one.

  The present invention according to claim 5 is characterized in that in the drainage pipe of the tank body, the drainage port 1 is provided with a blind cover 4 for preventing the user of the tank body from directly viewing the drainage port 1. It is drainage piping of the tank body as described in paragraph 0012.

  In the drainage pipe of the tank body according to the sixth aspect of the present invention, in the drainage pipe of the tank body, the drainage pipe provided with the overflow pipe 3 protrudes from the cylindrical main body portion and the upper side surface of the main body portion, and the upper surface thereof is the tank body. The tank drainage pipe according to any one of paragraphs 0009 to 0013, wherein the tank body is integrally formed by a flange portion 7 fixed in contact with the bottom surface of the tank body.

  The tank according to paragraph 0014 is characterized in that in the drainage pipe of the tank body, a part of the upper surface of the overflow pipe 3 is also used as a part of the flange portion 7 in the tank body drain pipe. It is a drainage pipe for the body.

According to the first aspect of the present invention, in the drainage pipe of the tank body that is not provided with the opening for the overflow drainage port on the side surface of the tank body, the drainage trap is a non-sealed drainage trap, so that the overflow pipe is ventilated. Even without providing a portion for venting the inside and outside of the overflow pipe such as a mouth, drainage can be performed satisfactorily. Specific examples of non-sealed drainage traps include the self-sealing trap using a soft material described in claim 2 and the hard tube described in claim 3, normally closing the hard tube and applying pressure. There is a check valve as a drain trap that opens accordingly.
In the present invention described in claim 4, by opening and closing the closing valve by remote control, the opening and closing operation of the closing valve arranged at a position where the hand is difficult to reach below the drain port becomes extremely easy.
In this invention of Claim 5, the part which the dirt and scale adhered to the inside of a drain outlet and its downstream became unexposed and the design property improved by having provided the blind cover at the drain outlet. The structure of this blind cover is that, in the case of conventional drainage piping of a tank body, for example, with a rubber stopper type shut-off valve, it is necessary to remove the blindfold cover and plug the rubber stopper into the drain outlet every time the drain outlet is closed. In the configuration where the valve part of the closing valve moves up and down above the drain port, like a normal remote-operated drain plug device that closes and closes the drain port, the raised valve part interferes with the blindfold cover and can not be used. For this reason, it cannot be used, and it can be used only for the first time by using a remote-operated drain plug device having a valve seat portion in the middle of the drain pipe as in the present invention.
In this invention of Claim 6, the drain pipe provided with overflow piping was set as the structure which provided the flange part in the drain pipe, and contact | abutted and fixed the flange part upper surface to the bottom face of the tank body. Like the drainage pipe of the conventional tank shown in FIG. 8, when the periphery of the attachment port is sandwiched between the drainage plug main body and the joint pipe, the upstream opening portion of the overflow pipe (the “overflow drainage port in the conventional example” )) Has to be arranged below the drain plug body, and the drainage piping correspondingly protrudes downward to narrow the storage space in the cabinet. According to the present invention, the drain plug main body in the conventional example can be omitted, and the position of the opening on the upstream side of the overflow pipe can be increased accordingly, so that the height position of the overflow pipe can be increased accordingly, and the storage space in the cabinet Can be widened.
According to the seventh aspect of the present invention, a part of the upper surface of the overflow pipe is also used as a part of the flange part, so that the upper surface of the overflow pipe and a part of the flange part are completely separated. Compared with the case, the height position of the overflow pipe can be increased, and the storage space in the cabinet can be widened.

It is the reference figure which notched a part showing the example of drainage piping of a tank. It is the reference figure which notched a part showing the example of drainage piping of a tank. It is the reference figure which notched a part showing the example of drainage piping of a tank. It is the reference figure which notched a part showing the example of drainage piping of a tank. It is the reference figure which notched a part showing the example of drainage piping of a tank. It is the reference figure which notched a part showing other examples of drainage piping of a tank. It is the reference figure which notched a part showing other examples of drainage piping of a tank. It is the reference figure which notched a part which shows the drainage piping of the conventional tank body. It is the reference figure which notched a part which shows the drainage piping of the conventional tank body. It is the reference figure which notched a part which shows the drainage piping of the conventional tank body. It is the reference drawing which notched a part which shows the drainage piping of the conventional tank which does not have a vent hole. It is the reference drawing which notched a part which shows the drainage piping of the conventional tank which does not have a vent hole. It is the reference drawing which notched a part which shows the drainage piping of the conventional tank which does not have a vent hole.

Below, the Example of the drainage piping of the tank body of this invention is described, referring drawings.
The drainage pipe of the tank body of the present invention shown in FIGS. 1 to 4 includes a joint pipe 5 having an overflow pipe 3, a cheese pipe 8, a self-sealing trap member 10, a closing valve 2, an operation unit 12, a release wire 13, and a support It is comprised from each member, such as the member 14, the drainage connection pipe 15, and the blindfold cover 4. The structure of each member is described below.
The joint pipe 5 is a substantially cylindrical member, and includes a cylindrical main body portion, and a flange portion 7 that protrudes from the upper side surface of the main body portion and whose upper surface is fixed in contact with the bottom surface of the tank body. And a valve seat portion 6 for preventing water passage when the valve portion 2a of the blocking valve 2 is mounted on the water passage portion 5a which is a drainage passage formed therein.
In addition, the flange portion 7 is provided with screw holes at a plurality of locations, and a screw member 16 is provided at each of the openings.
The joint pipe 5 includes an overflow drain port 3a provided on the upstream side surface of the valve seat portion 6, an overflow junction port provided on the downstream side surface of the valve seat portion 6, and the overflow drain port 3a and the overflow. Overflow pipe 3 configured in a substantially L shape, having a folded portion 3c that communicates with the junction and has an upper edge that is higher than the bottom surface of the tank body and is turned back at a position that is lower than the upper edge of the tank body. It is equipped with. As shown in FIG. 1 and the like, a part of the upper surface of the overflow pipe 3 has a structure that is also used as a part of the flange portion 7.
The shut-off valve 2 includes a disc-shaped valve portion 2a and a support shaft 2b suspended from the lower center of the valve portion 2a.
The operation unit 12 is a member that is disposed in the vicinity of the upper edge of the wash bowl, which is a tank body, and is connected to the release wire 13. The operation unit 12 is connected to the release wire 13 through the release wire 13 by a pushing operation or a pulling operation applied to the operation unit 12. Then, the rod portion 13a provided at the other end of the inner wire is raised and lowered.
The release wire 13 is a member that transmits the operation of the operation unit 12 to the closing valve 2.
A cylindrical outer tube that is flexible in the lateral direction and rigid in the axial direction, and is disposed in the outer tube and slidably disposed in the outer tube. It consists of an inner wire having flexibility and rigidity in the axial direction, and a rod portion 13a provided in the inner wire.
The support member 14 is a member that supports and fixes the end portion of the release wire 13 and arranges the rod portion 13a of the release wire 13 below the support shaft 2b of the shut-off valve 2 in a vertically movable state. And a fixing portion 14b sandwiched between the joint tube 5 and the cheese tube 8 provided below the supporting portion 14a.
The cheese tube 8 is a cylindrical tube body, and includes a branch tube portion 9 that is inserted through a release wire 13 and fixed in a watertight manner on the side surface, and the upstream side is a joint with a support member 14 sandwiched therebetween. The pipe 5 is connected to the self-sealing trap member 10 on the downstream side.
The self-sealing trap member 10 includes a self-sealing trap body 10a described below and a trap piping member 11.
The self-sealing trap body 10a is made of a flexible material having a substantially cylindrical shape, and the cylindrical body is closed by contacting the inner surfaces of a part of the cylindrical body. The pressure of the fluid that is elastically deformed with respect to the pressure of the fluid that is about to flow to the side) to open the inside of the cylindrical body and allow the fluid to pass therethrough, and that is about to flow to the other side of the cylindrical body Is a member that keeps the closed state and prevents passage of fluid.
The trap piping member 11 is a substantially cylindrical hard tube, and the upper end is connected to the cylindrical portion of the upper end of the self-sealing trap body 10a in a watertight manner at the lower end of the cheese tube 8 and the lower end is connected to a drain connection tube 15 described later. These are members connected to each other.
The drainage connection pipe 15 is a tubular body, the upper end is connected to the downstream end of the self-sealing trap pipe, and the lower end is connected to the sewage side pipe, respectively, and the drainage flowing out from the self-sealing trap member 10 is discharged to the sewage side.
The blind cover 4 is a member disposed above the drainage port 1 of the wash bowl that is a tank body, and is disposed below the cover portion 4a made of a flat resin and the drainage port 1 and the cover portion 4a. Leg portions 4b that form gaps for water passage therebetween.
Further, the wash bowl of the wash basin, which is a tank body to be drained, is a tank body that is open at the top, provided with a mounting hole corresponding to the drain port 1 of the joint pipe 5 below the wash bowl, and the attachment On the lower surface of the peripheral edge of the hole, a screw hole portion to be screwed with the screw member 16 is provided at a position corresponding to the screw hole of the flange portion 7 of the joint pipe 5. Moreover, the operation part 12 attachment hole which attaches the operation part 12 is provided in the vicinity of the opening periphery above the wash bowl. The wash bowl constructed as described above is arranged and fixed above a cabinet having a storage space for soap, towels and the like inside.

When constructing a drainage pipe for a tank body composed of the above-described members in a wash bowl that is a tank body, first, the flange portion 7 of the joint pipe 5 is brought into contact with the lower surface of the mounting hole of the wash bowl, and further, screws The screw member 16 is screwed into the screw hole through the hole, and the joint pipe 5 is attached and fixed to the wash bowl. The operation unit 12 is attached to the operation unit 12 mounting hole.
Next, after the release wire 13 is inserted from the branch tube portion 9 of the cheese tube 8 toward the upstream side of the tube body and taken out from the tube body, the end portion of the release wire 13 is attached to the support portion 14a of the support member 14. Fix it.
From this state, the fixing portion 14 b of the support member 14 is sandwiched between the joint pipe 5 and the cheese pipe 8, and then connected and fixed to the joint pipe 5 and the cheese pipe 8. Further, the end portion of the branch pipe portion 9 is fixed in a watertight manner with the release wire 13 inserted. Further, the other end of the release wire 13 is connected to the operation unit 12. Further, the upstream end of the trap piping member 11 of the self-sealing trap member 10 is connected to the lower end of the cheese tube 8. Further, the downstream end of the trap pipe member 11 is connected to the sewage side pipe via the drain connection pipe 15, the blind cover 4 is disposed above the drain port 1, and the drain pipe of the tank body to the wash bowl is provided. Construction is complete.

When using the drain pipe to the wash bowl which is the tank body constructed as described above, first, as shown in FIG. 1, the operation part 12 is operated, the rod part 13a is raised, and the support shaft of the shut-off valve 2 is supported. 2b is pushed up, the valve portion 2a is not in contact with the valve seat 6 of the joint pipe 5, that is, the passage through the joint pipe 5 from the drain port 1 through the joint pipe 5 substantially linearly, and the flow path leading to the self-sealing trap member 10 is blocked. The state is not performed (hereinafter referred to as “opened state”). In this state, waste water generated in the wash bowl passes through the joint pipe 5 from the drain port 1 without passing through the overflow pipe 3 side, and accumulates in the self-sealing trap body 10a of the self-sealing trap member 10. When a certain amount of water accumulates and the internal pressure (water pressure) reaches a certain value, as shown in FIG. 2, the self-sealing trap body 10a opens, and the drainage is discharged to the drainage connection pipe 15 side. It is discharged from the connecting pipe 15 to the sewage side.
Next, the operation part 12 is operated, and as shown in FIG. 3, the rod part 13 a is lowered so that the valve part 2 a of the closing valve 2 contacts the valve seat part 6, and the inside of the joint pipe 5 passes through the drain port 1. It is assumed that the flow path that passes substantially linearly is closed (hereinafter referred to as “capped state”). In this state, the flow path that flows almost linearly from the upper side to the lower side in the joint pipe 5 is closed by the shut-off valve 2, so that the waste water in the wash bowl that flows from the drain port 1 flows into the joint pipe 5. Then, it flows into the overflow pipe 3 side from the overflow drain port 3a. At this time, as described above, the overflow pipe 3 is configured in a substantially L shape having a folded portion 3c that is folded back at a position where the upper edge is higher than the bottom surface of the tank body and lower than the upper edge of the tank body. Therefore, as shown in FIG. 4, the water level of the drainage rises up to the folded portion 3 c of the overflow pipe 3 in the wash bowl and the overflow pipe 3 that are the tank bodies.
When the drainage rises to the folded portion 3c of the overflow pipe 3, the drainage overflows the folded portion 3c and flows downstream, passes through the lower end of the joint pipe 5 from the overflow junction, and accumulates inside the self-sealing trap body 10a (or air The pool is pushed out and the pressure of the air inside the self-sealing trap body 10a is increased). When a certain amount of drainage water pools (or the air pressure of the air pool increases) and the internal pressure reaches a certain value, the self-sealing trap body 10a opens, and the drainage (or air pool) flows to the drainage connection pipe 15 side. It is discharged and discharged from the drain connection pipe 15 to the sewage side.
At this time, unlike the conventional sealed drain trap pipe, the self-sealing trap body 10a opens regardless of water pressure or air pressure if pressure is simply applied. For this reason, if the water level on the side of the wash bowl, which is the tank body, rises, the opening corresponding to the water pressure of the drainage accumulated in the self-sealing trap body 10a or the pressure of the air pool in the overflow pipe 3 as shown in FIG. Then, the air pool or overflow drainage is discharged to the sewage side.
In this way, the drainage from the overflow pipe 3 is discharged without delay from the self-sealing trap member 10 through the drainage connection pipe 15 to the sewage side, so that the water level in the wash bowl, which is a tank body, is the folded portion 3c of the overflow pipe 3. It is stable at almost the same height, and the drainage does not overflow from the inside of the wash bowl.
Thereafter, by operating the operation unit 12 and freely operating the open and closed states, water is drained into the wash bowl as needed, and there is no drainage accumulated in the wash bowl, and drainage into the wash bowl. A state where the overflow pipe 3 does not overflow from the inside of the wash bowl can be freely selected while being stored.

In the above embodiment, by adopting the self-sealing trap member 10 that does not use sealed water in the drainage pipe, if the drainage is accumulated in the tank up to almost the same height as the return position of the overflow pipe 3, the water level will rise further. Even if it does not occur, the self-sealing trap can be opened to discharge air pockets and waste water.
Moreover, by opening and closing the closing valve 2 by remote operation, the opening and closing operation of the closing valve 2 disposed at a position where the hand is difficult to reach below the drain port 1 is extremely easy.
In addition, by providing the blind cover 4 above the drain port 1, the portions with dirt and scales in the drain port 1 and downstream thereof are not exposed and the design is improved.
Moreover, it is a tank body compared with the drainage piping of the conventional tank body shown, for example in FIG. 8 by having set it as the structure which contacted and fixed the joint pipe | tube 5 provided with the overflow piping 3 to the bottom face of a tank body. The upstream opening (overflow drainage port 3a) of the overflow pipe 3 can be arranged upward by the length from the lower surface of the bottom surface of the wash bowl to the lower end of the drain plug body, and the protrusion into the cabinet can be It became possible to suppress.
Furthermore, since a part of the upper surface of the overflow pipe 3 is also used as a part of the flange portion 7, compared to a case where the upper surface of the overflow pipe 3 and a part of the flange portion 7 are completely configured separately, The height position of the overflow pipe 3 could be increased.

The embodiments of the present invention are as described above, but the present invention is not limited to the above-described embodiments, and can be freely changed without departing from the scope of the present invention.
For example, in the above embodiment, the non-sealed drainage trap is constituted by a self-sealing trap made of a flexible material having a substantially cylindrical shape, but the present invention is limited to the above embodiment. Alternatively, a drain trap having another configuration that does not use sealed water may be used. As an example, the non-sealed drain trap may be constituted by a backflow prevention valve member 17 as shown in FIGS.
The backflow prevention valve member 17 as a non-sealed drain trap shown in FIGS. 6 to 7 includes a hard pipe main body 17a, a valve body 18, and a trap piping member 11 described below.
The hard tube body 17a is a cylindrical body made of a hard resin material such as an ABS resin material and having a cylindrical shape and an end face on the downstream side is inclined.
The valve body 18 is a member that is attached to the rigid tube main body 17a via a rotatable hinge 18a and has a plate-like weight portion 18b. Usually, the rigid tube main body is operated by the weight portion 18b. It contacts so that the opening of the inclined surface of 17a may be obstruct | occluded.
The trap pipe member 11 is a substantially cylindrical hard pipe, the upper end is connected to the lower end of the hard pipe body 17a in a watertight manner at the lower end of the cheese pipe 8 and the lower end is connected to a drain connection pipe 15 described later. These are members connected to each other.
The backflow prevention valve member 17 as a non-sealed drain trap configured as described above is constructed in the drain pipe instead of the self-sealing trap member 10 of the above embodiment, and, as shown in FIG. By the valve body 18 closing the opening of the hard tube main body 17a by the weight portion 18b material, it is possible to prevent odors and pests from flowing back from the sewage side. In addition, when there is drainage in the tank body, the pressure due to the weight of the drainage that has passed through the joint pipe 5 (sometimes via the overflow pipe 3) or the pressure of the air pool in the overflow pipe 3 is shown in FIG. As shown, the valve body 18 is rotated to open the lower end of the hard tube main body 17 a to allow the drainage or the air reservoir to pass through and can be discharged to the sewage side through the drainage connection pipe 15. In the case of the backflow prevention valve member 17 as well as in the case of the self-sealing trap member 10, if pressure is simply applied, it opens regardless of either water pressure or air pressure. For this reason, if the water level on the tank body side rises, it opens corresponding to the pressure of drainage from the tank body or the pressure of the air pool in the overflow pipe 3, and the overflow drainage or air pool is discharged to the sewage side.
In this way, the drainage from the overflow pipe 3 is discharged from the backflow prevention valve member 17 through the drainage connection pipe 15 to the sewage side without delay, so that the water level in the tank body is almost the same height as the folded portion 3 c of the overflow pipe 3. The wastewater does not overflow from the upper edge of the tank body.

  Moreover, in the said Example, although the drainage piping of a tank body is constructed in the wash bowl of the washstand which is a tank body, this invention is not limited to the said Example, The sink of a sink, the bathtub of a bathroom, etc. Of course, it does not matter even if it uses it for the tank of other living equipment.

DESCRIPTION OF SYMBOLS 1 Drain port 2 Blocking valve 2a Valve part 2b Support shaft 2c Locking arm 3 Overflow piping 3a Overflow drain port 3b Overflow merge part 3c Folding part 4 Blindfold cover 4a Cover part 4b Leg part 5 Joint pipe 5a Water passage part 6 Valve seat part 7 Flange part 8 Cheese pipe 9 Branch pipe part 10 Self-sealing trap member 10a Self-sealing trap body 11 Trap piping member 12 Operation part 13 Release wire 13a Rod part 14 Support member 14a Support part 14b Fixing part 15 Drain connection pipe 16 Screw member 17 Backflow prevention Valve member 17a Rigid pipe body 18 Valve body 18a Hinge 18b Weight part 19 Drain plug body 19a Locking part 20 Vent B B Washing bowl C Cabinet T Sealed drain trap pipe W Water surface

Claims (7)

A drainage pipe for draining the tank body,
A drain pipe communicating with the drain port 1 opened at the bottom of the tank body;
A closing valve 2 for closing the flow path inside the drain pipe;
The drain pipe is branched upstream of the closing valve 2, a part of which is disposed above the bottom surface of the tank body, and is folded back below the upper edge of the tank body so as to be more than the blocking valve 2. An overflow pipe 3 connected to the downstream side and sealed against the inside and outside of the drain pipe;
A non-sealed drain trap having no sealed water, provided on the downstream side of the junction of the drain pipe with the overflow pipe 3,
A drainage pipe for a tank body, characterized by comprising: The non-sealed drain trap is
It is made of a flexible material made into a substantially cylindrical shape,
The cylinder is closed by the inner surfaces coming into contact with each other in a part of the cylinder,
While elastically deforming against the pressure of the fluid that is about to flow to one side of the cylinder and opening the inside of the cylinder to allow the fluid to pass through,
2. A drainage pipe for a tank body according to claim 1, which is a self-sealing trap that maintains a closed state against the pressure of the fluid to flow to the other side of the cylindrical body and prevents passage of the fluid. . The non-sealed drain trap is
A hard tube with a cylindrical part;
A valve body 18 that normally closes the hard pipe and opens when a certain pressure is applied to the upstream side to allow drainage from the upstream side to the downstream side;
The drainage pipe for a tank body according to claim 1, wherein the drainage pipe is a backflow prevention valve. In the drainage pipe of the tank body,
The drainage pipe for a tank body according to any one of claims 1 to 3, wherein the shutoff valve 2 is a remotely operated shutoff valve 2 that is opened and closed by remote control. In the drainage pipe of the tank body,
The drainage pipe of the tank body according to claim 4, wherein the drainage port 1 is provided with a blindfold cover 4 that prevents a user of the tank body from directly viewing the drainage port 1. In the drainage pipe of the tank body,
The drain pipe with the overflow pipe 3 is
A cylindrical body part;
A flange portion 7 that protrudes from the upper side surface of the main body portion, and whose upper surface is fixed in contact with the bottom surface of the tank body;
It is constituted by being integrally formed by,
The drainage pipe of the tank body according to any one of claims 1 to 5. In the drainage pipe of the tank body,
A part of the upper surface of the overflow pipe 3 is also used as a part of the flange portion 7,
The drainage pipe of the tank body according to claim 6.

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