JP7021735B2 - Drainage fitting - Google Patents

Description

The present invention relates to a drainage joint that treats drainage from a drainage device, and more specifically, in a drainage joint that discharges drainage from a plurality of drainage devices to a drainage port, a large amount of drainage from one drainage device is required. However, it relates to a drainage joint for preventing a backflow from occurring in a drainage pipe to another drainage device connected to the drainage joint.

Conventionally, in equipment such as washbasins, sinks, and bathtubs that are equipped with a tank body and generate drainage by use (hereinafter referred to as "drainage equipment"), piping for discharging the water supply generated inside the tank body to the sewage side. (Drainage piping) is known.
These drainage pipes are connected to a drainage port provided on the floor surface or the like, and the drainage generated from the drainage device is piped so as to be discharged to a sewer side pipe such as an underfloor pipe through the drainage port. In such drainage pipes, drainage joints that join a plurality of drainage pipes are often used for the purpose of simplifying and improving the efficiency of the pipes.

The drainage pipe described in Patent Document 1 is provided with two wash bowls which are drainage devices, and the pipe from the wash bowl is connected to a drainage joint (“connecting portion” in Patent Document 1) arranged on the floor surface. By doing so, the drainage pipes of each wash bowl are merged into one drainage pipe, and the drainage pipe on the downstream side is treated by one drainage pipe, which simplifies the drainage pipe and also makes piping work. It is becoming more efficient.

Jitsukaihei 4-97962 Gazette

In the above drainage pipe, since a plurality of drainage devices are connected by a drainage joint, drainage from one drainage device may affect the drainage pipes of other drainage devices.
Specifically, when a large amount of drainage is generated from one drainage device in the above drainage device and the drainage flows vigorously, the drainage from the drainage device is discharged from the drainage joint to the drainage pipe on the downstream side. May not be in time and may flow into the drainage pipe of the other connected drainage device and flow back into the washbasin.
Specifically, in the above drainage pipe, when a large amount of drainage is generated from one drainage device and the drainage flows vigorously, the drainage from the drainage device is discharged to the drainage pipe on the downstream side in time at the drainage joint. Instead, it may flow into the drainage pipe of the other drainage device that is connected and flow back.
In particular, when the connection points of the drainage joints from the plurality of drainage devices are opposite to each other as in the embodiment of Patent Document 1, one of them is irrespective of the drainage performance (wastewater treatment capacity) of the drainage pipe. Drainage from the drainage device may flow vigorously along the drainage pipe and flow directly into the drainage pipe of the other drainage device at the opposite position, causing a backflow.
As another example, when drainage is performed from one drainage pipe, air from the other drainage pipe side is drawn in and discharged to the downstream side pipe, resulting in a phenomenon called siphon phenomenon that generates negative pressure in the pipe. be. In this case, in the piping of other drainage equipment that is drawn in by the negative pressure, an air drawing noise such as "roughness" due to the negative pressure is generated, which causes discomfort to the indoor user. In addition, depending on the drainage pipe, a drainage pool called a water-sealed drainage trap, which is called a water-sealed drainage trap, is formed in the middle of the pipe, which is called a trap function, and odors and pests from the sewage side. It may be equipped with a member having a function of preventing intrusion into the indoor side of the water. This water-sealed drain trap creates a trap function by storing a sufficient amount of drainage inside, but when a negative pressure is generated on the downstream side of the drain pipe due to the siphon effect described above, the water is sealed by the negative pressure. Was pulled in and washed away to the downstream side, and there was a case where the trap function called rupture was lost.
The present invention has been invented in view of the above problems, and in a drainage joint for merging pipes from a plurality of drainage devices, it is possible to prevent backflow from one drainage device to another drainage device. It provides a drainage joint that can prevent the occurrence of noise and rupture due to negative pressure even if the siphon effect occurs during drainage.

The present invention according to claim 1 is a drainage joint for merging drainage from at least two or more drainage devices and discharging the drainage to the drainage port, and is a first inflow port into which drainage from the drainage device flows. And a first drainage channel consisting of an upright pipe body portion provided with a first drainage port communicating with the drainage port below, and provided so as to cover the upright portion of the first drainage pipe portion. It consists of a second drainage channel having a casing having a second drainage port on the side surface and a second drainage port communicating with the drainage port below, and the first drainage port and the second drainage channel . It is a drainage joint characterized in that the inflow port of the water is oriented substantially horizontally and is provided at almost the same height position .

The present invention according to claim 1 , wherein both the first discharge port and the second discharge port have a circular shape in a plan view or a bottom view and are arranged concentrically. Drainage joint.

The drainage joint according to claim 1 or 2 , wherein the present invention according to claim 3 is provided with a collecting portion for a perforated member in the second discharge port.

The present invention according to claim 4 is configured so that the first drainage flow path and the second drainage flow path do not merge in the joint member main body until the drainage is discharged into the drainage port, and the first inflow port. One of claims 1 to 3 , wherein the drainage device connected to is characterized in that the amount of drainage discharged at one time is larger than that of the drainage device connected to the second inlet. It is the drainage joint described in one.

According to the first aspect of the present invention, even if a large amount of drainage from one drainage device is generated in a drainage joint connecting drainage pipes from a plurality of drainage devices, backflow occurs in other drainage devices. There is no such thing.
According to the first aspect of the present invention, the drainage joint can be made compact in the vertical direction.
According to the second aspect of the present invention, the drainage joint can be configured to be compact in the horizontal direction.
The present invention according to claim 3 can collect dust contained in wastewater and prevent it from flowing out to the downstream side. In addition, by dividing a part of the drainage flow path with the collection part of the perforated member, even if the siphon effect occurs during drainage, the influence of negative pressure is reduced, and noise and sealing water due to negative pressure are drawn in. Can be reduced.
According to the fourth aspect of the present invention, the configuration of the drainage device can be clarified.

It is a reference figure of the drainage pipe which adopted the drainage joint of this invention. It is a front view of the joint member main body of 1st Embodiment. It is a top view of the joint member main body of 1st Embodiment. It is a bottom view of the joint member main body of 1st Embodiment. It is a perspective view of the joint member main body of 1st Embodiment. It is a perspective view of the joint member main body of 1st Embodiment. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a cross-sectional view taken along the line BB of FIG. FIG. 3 is a sectional view taken along the line CC of FIG. It is a top view of the perforated plate member of 1st Embodiment. It is a perspective view of the perforated plate member of 1st Embodiment. It is sectional drawing which shows the member composition of the main member of 1st Example. It is a perspective view which shows the member composition of the main member of 1st Example. It is sectional drawing which shows the combined state of the main member of 1st Example.

The first embodiment of the present invention will be described below with reference to the drawings.
The drainage pipes using the drainage joints of the first embodiment of the present invention shown in FIGS. 1 to 14 are often used in business hotels and the like in bathrooms equipped with a bathtub B and a washbasin S. , It is about the drainage pipe on the indoor side,
The wash bowl S and the tub B as drainage equipment described below, and the joint member main body 1 which is a drainage joint, the tub drainage port main body 6, the washbasin drainage port main body 7, and the piping for treating the drainage of these drainage devices. It is composed of a drainage pipe composed of a member P, and is discharged to a drainage port 5 provided on the floor surface of the bathroom.
In this embodiment, the bathtub B is a bathtub body having an open upper part, which is installed on the floor surface of the bathroom, and has a bathtub attachment port B1 to which the bathtub drainage port main body 6 is connected to the bottom surface.
In this embodiment, the washbasin S is a tank body having an open upper part, which is attached to the side wall surface of the room, and has a washbasin attachment port S1 to which the washbasin drainage port main body 7 is connected to the bottom surface. In this embodiment, it is already attached and fixed to the side wall surface of the room at the start of construction.
When comparing the bathtub B and the washbasin S, the frequency of drainage is higher in the washbasin S as long as it is used normally, but the amount of drainage drained at one time is higher in the bathtub B. ..
Further, the bathtub drainage port 6a and the washbasin drainage port 7a are provided with a plug 8 for closing the bathtub drainage port 6a and the washbasin drainage port 7a, if necessary.
The bathtub drainage port main body 6 is a member having a substantially cylindrical shape that is connected and fixed to the bathtub attachment port B1 when the construction is completed, and the bathtub drainage port 6a is provided inside the member.
The washbasin drainage port main body 7 is a member having a substantially cylindrical shape that is connected and fixed to the washbasin attachment port S1 when the construction is completed, and is provided with the washbasin drainage port 7a inside.
The joint member main body 1 is a drainage joint for merging the drainage from the two drainage devices of the bathtub B and the washbasin S and discharging the drainage to the drainage port 5, and is the first drainage flow path 2 described below. , And a second drainage channel 3.
As shown by the arrow in FIG. 8, the first drainage flow path 2 is a flow path formed by bending a tubular body forming a cylinder from the horizontal direction toward the hanging direction into an L shape, and is formed in the horizontal direction. It is provided with a first inflow port 2a through which drainage from the drainage device B, which is a drainage device, flows in, and a first discharge port 2b opened at the lower end of a pipe body portion that bends downward and erects. It becomes.
The lower end of the inverted tube body portion forming the first discharge port 2b protrudes downward from the second discharge port 3b described later, and the opening of the perforated plate member 4 is formed on the outer surface of the protruding portion. It is provided with a fitting portion 2c formed of a groove that fits with 4a.
As shown in FIG. 9, the second drainage channel 3 includes a casing portion 3c provided so as to cover the first drainage channel 2 and having a shape like a bottomed cylinder inverted upside down. The casing portion 3c is formed by providing a wall portion at the upper side and opening at the lower side to form a second discharge port 3b. As shown in the bottom view of FIG. 4, the circular side surface portion of the casing portion 3c is formed concentrically with the first discharge port 2b, and the tubular body extends laterally from the side surface portion thereof. A second inflow port 3a is provided at the end.
It should be noted that the first inflow port 2a and the second inflow port 3a each have a substantially horizontal direction (actually, they have a slight inclination of about 1 to 2 degrees required for natural drainage). As it faces, it is prepared at almost the same height position.
Further, the angle formed by the central axis in the plan view of the pipe body provided with the first inflow port 2a and the pipe body provided with the second inflow port 3a is about 90 degrees as shown in FIG.
Further, as shown in FIG. 8, a part of the pipe body forming the first drainage flow path 2 and a part of the pipe body portion in the horizontal direction are configured to also serve as a wall surface above the casing portion 3c. Become.
Further, the first drainage channel 2 and the second drainage channel 3 are configured as an integral member and cannot be separated as separate parts.
The piping member P is a pipe body made of a resin material such as vinyl chloride, and is made of a straight pipe, a bent pipe, or the like. Pipe up to and form a drainage channel. Further, the linear pipe body includes a hose pipe of a flexible soft PVC pipe and a pipe pipe of a hard PVC pipe. The hose tube is provided with a spring-shaped core material to prevent the tube from being crushed. Further, the bent pipe is made of a hard PVC pipe or a hard resin material such as ABS.
The drainage port 5 is an opening having a circular shape in a plan view provided on the floor surface F of the bathroom, and the downstream side of the drainage port 5 is connected to a drainage pipe under the floor so that the drainage port 5 is finally discharged to the sewage side. It consists of. Further, a drain trap (not shown) is provided between the drain port 5 and the underfloor pipe to prevent odors from the sewage side and backflow of pests to the indoor side.
Further, the drainage port 5 is provided with the perforated plate member 4 described below.
The perforated member 4 is a member shown in FIGS. 10 and 11 that is arranged and fixed in the drainage port 5 by fitting, and has a circular outer peripheral portion and a central portion of the joint member main body 1. An opening 4a that fits with the lower side surface of the vertical portion of the pipe body forming one drainage channel 2 is provided, and dust, hair, etc. in the drainage are caught between the opening 4a and the outer peripheral portion. It is equipped with a collecting unit 4b for collecting. The collection unit 4b combines ribs with a width of about 1 mm in a grid pattern to form a plurality of small square-shaped openings of 1.4 mm square, so that drainage is discharged from the small openings and dust and the like in the drainage are collected. It stays on the ribs, is separated from the drainage, and is collected. In FIGS. 10, 11, and 13, only the corresponding portion of the collecting portion 4b is shown by hatching, and the ribs are not shown.
Further, when the construction is completed, the collecting portion 4b of the perforated member 4 is not completely covered with the joint member main body 1 and is not closed, but is a portion located outside the plan view joint member main body 1. The collecting portion 4b is exposed on the floor surface F of the bathroom, and is configured to discharge the drainage generated on the floor surface F of the bathroom.

Each member configured as described above is constructed as follows. Although not described in detail, each connection portion is watertightly connected by screw tightening using an adhesive or packing as necessary.
First, the bathtub drainage port main body 6 is connected to the bathtub attachment port B1 of the bathtub B, and the washbasin drainage port main body 7 is connected to the washbasin attachment port S1 of the washbasin S.
Next, the perforated member 4 is attached to the drainage port 5, and the fitting portion 2c of the joint member main body 1 is further fitted into the opening 4a of the perforated member 4. As a result, as shown in FIG. 14, the second discharge port 3b is arranged above the collection portion 4b of the perforated plate member 4. That is, the second discharge port 3b is provided with a collection portion 4b of the perforated member 4.
Next, the bathtub B is installed on the bathroom after connecting the bending pipe to the lower end of the bathtub drainage port main body 6 and further connecting the hose pipe to the downstream end of the bending pipe. Further, the downstream end of the hose pipe is connected to the first inflow port 2a of the joint member main body 1. The pipe from the bathtub drainage port main body 6 to the first inflow port 2a is hereinafter referred to as "bathtub pipe BP".
Next, a straight pipe of a rigid PVC pipe is connected to the lower end of the washbasin drainage port body 7 so as to hang down, and a bent pipe is connected to the lower end of the straight pipe. Further, after connecting the hose pipe to the downstream end of the bent pipe, the downstream end of the hose pipe is connected to the second inflow port 3a of the joint member main body 1. The pipe from the washbasin drainage port main body 7 to the second inflow port 3a is hereinafter referred to as "washbasin pipe SP".
In this way, the drainage pipe of the bathroom according to the first embodiment of the present invention is completed.
With the above configuration, in normal use, the first inflow port 2a connected to the bathtub B is compared with the second inflow port 3a connected to the washbasin S. A large amount of wastewater that is drained at one time flows in. That is, the drainage pipe of the bathroom of the present invention states that "the drainage device connected to the first inflow port 2a has a larger amount of drainage at one time than the drainage device connected to the second inflow port 3a. It is a drainage pipe that is "a large amount".

The present embodiment configured as described above is used as follows.
When drainage is generated in the bathtub B, the drainage in the bathtub B flows from the bathtub drainage port 6a into the first inflow port 2a through the bathtub pipe BP, and passes through the first drainage flow path 2. It is discharged directly into the drain port 5 from the first discharge port 2b.
Further, when drainage is generated in the washbasin S, the drainage in the washbasin S flows from the washbasin drainage port 7a to the second inflow port 3a via the washbasin pipe SP, and flows into the second inflow port 3a of the lower surface of the casing portion 3c. It is discharged from the second discharge port 3b into the drain port 5 after passing through the opening of the collection portion 4b of the perforated member 4.
Further, when drainage is generated on the floor surface F of the bathroom due to spillage of hot water in the bathtub B, the drainage on the floor surface F of the bathroom is collected by the perforated member 4 provided in the drainage port 5. Of the 4b, the water flows into the drain port 5 through the collecting portion 4b not covered by the joint member main body 1 and is discharged.
As for the drainage from the bathtub B, the drainage (bath water) collected in the large-capacity bathtub B is discharged at once by removing the stopper lid 8, so that the amount of drainage tends to be large. However, in this embodiment, the first drainage channel 2 and the second drainage channel 3 do not merge in the joint member main body 1 until the drainage is discharged into the drainage port 5. The first drainage channel 2, that is, the drainage from the bathroom, does not cause a backflow in the second drainage channel 3.
Further, when a large amount of drainage from the first drainage channel 2 causes a siphon phenomenon in the drainage port 5 and the inside of the drainage port 5 becomes a negative pressure, the air is drawn in by the negative pressure to the perforated member 4. Since the air is passed through the small opening of the collecting portion 4b of the above, it becomes difficult for the air to pass through, the air is less likely to be drawn in due to the negative pressure, and the resulting “rough” pulling sound is less likely to occur.
In particular, when the washbasin S is used and the perforated member 4 is wet due to the drainage from the washbasin pipe SP as a result, water droplets are attached to the small opening of the collecting portion 4b of the perforated member 4, which causes surface tension. By functioning to close the opening of the collecting portion 4b, it becomes more difficult for air to be drawn in due to negative pressure.
Further, in this embodiment, a part of the collecting portion 4b of the perforated member 4 provided in the drainage port 5 is not covered by the joint member main body 1 and is exposed on the floor surface F of the bathroom. It is possible to take in air from the exposed collection unit 4b to the inside of the drainage port 5, the first drainage flow path 2 or the second drainage flow path 3, and this intake-capable structure allows the above-mentioned drainage time. Negative pressure due to the siphon effect can be eliminated.
In the structure in which the intake air is taken from the drainage port 5 as described above, when a large amount of drainage is generated in the first drainage channel 2, the second drainage channel 3 and the structural portion of the intake air of the drainage port 5 (In the case of this embodiment, the collecting portion 4b at the portion not covered by the joint member main body 1) is similarly provided with the collecting portion 4a, but the drain port 5 is the location where the negative pressure is generated. Most of the intake air is taken from the collecting portion 4b of the perforated member 4 provided in the drainage port 5, and hardly occurs from the washbasin drainage port 7a of the washbasin bowl S. As a result, pull-in and rugged noise due to negative pressure are generated in the drainage port 4, and hardly occur in the washbasin drainage port 7a. Compared to the washbasin drainage port 7a, the drainage port 4 is located farther from the user's ear, and even if a rugged sound is generated, the sound is not as loud for the user as when it is generated at the washbasin drainage port 7a. It's done.

Examples of the present invention are as described above, but the present invention is not limited to the above-mentioned examples, and can be freely changed without changing the gist.
For example, in the above embodiment, the drain trap is arranged between the drain port 5 and the underfloor pipe, but the present invention is not limited to the above embodiment and is on the bathtub pipe BP and the washbasin pipe SP. Drain traps may be used individually. At this time, if the water-sealed drain trap used on the washbasin pipe SP is a water-sealed drain trap that creates a trap function by collecting drainage as sealing water, the influence of the negative pressure generated by the siphon effect is the drainage of the present invention. By reducing the amount by the joint, it is possible to prevent the sealing water from being pulled in by the negative pressure and losing the trap function.

Further, in the above embodiment, the tub B and the washbasin S are used as the drainage device, but the present invention is not limited to the above embodiment and may be used for other drainage devices such as a sink and a washing machine. I do not care.

Further, in the above embodiment, the lower end of the first discharge port 2b is below the second discharge port 3b, but the drainage from the second inflow port 3a flows back to the first flow path 2 side. In order to prevent this, backflow can be prevented by setting the lower end of the first discharge port 2b at a height position between the lower end of the second inflow port 3a and the second discharge port 3b. ..
However, as in the embodiment of the present invention, it is possible to more reliably prevent backflow by setting the lower end of the first discharge port 2b at a position lower than that of the second discharge port 3b.

Further, in the above embodiment, the number of drainage devices connected to the drainage joint is two, but the present invention is not limited to the above embodiment. A second inflow port 3a is provided, and drainage pipes from the drainage device are connected to each of the first inflow port 2a and the plurality of second inflow ports 3a to treat the drainage of three or more drainage devices. It may be used as a drainage joint.

1 Joint member main body 2 First drainage flow path 2a First inflow port 2b First discharge port 2c Fitting part 3 Second drainage flow path 3a Second inflow port 3b Second discharge port 3c Casing part 4 Perforated member 4a Opening 4b Collection part 5 Drainage port 6 Bath drainage port body 6a Bath drainage port 7 Washbasin drainage port body 7a Washbasin drainage port 8 Plug lid B Bathtub B1 Bathtub mounting port F Bathroom floor surface P Piping member S Washbasin Bowl S1 Washbasin mounting port BP Bath pipe piping SP Washbasin piping

Claims (4)

A drainage joint for merging drainage from at least two or more drainage devices and discharging it to the drainage port.
A first drainage channel consisting of a first inflow port into which drainage from drainage equipment flows in and an inverted pipe body having a first discharge port communicating with the drainage port below.
A second having a casing provided so as to cover the vertical portion of the first drainage pipe portion, having a second inflow port on the side surface and a second discharge port communicating with the drainage port below. Drainage channel and
Consists of
A drainage joint characterized in that the first inflow port and the second inflow port face substantially horizontally and are provided at substantially the same height position. The drainage joint according to claim 1 , wherein both the first discharge port and the second discharge port have a circular shape in a plan view or a bottom view and are arranged concentrically. The drainage joint according to claim 1 or 2 , wherein the second discharge port is provided with a collecting portion for a perforated member. The drainage device that is configured so that the first drainage channel and the second drainage channel do not merge in the joint member body until the drainage is discharged into the drainage port, and is connected to the first inlet is the second. The drainage joint according to any one of claims 1 to 3 , wherein the amount of drainage discharged at one time is larger than that of the drainage device connected to the inflow port of the water.

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