JP7249495B2 - Drain joint with perforated plate - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drainage joint provided with a perforated member for treating the drainage of a drainage device, and more particularly, to a drainage joint provided with a perforated member for discharging the drainage of a plurality of drainage devices to a drain port. , a perforated plate for preventing backflow from occurring in a drainage pipe to another drainage device connected to a drainage joint equipped with a perforated member , even if a large amount of water is discharged from one drainage device. It relates to a drainage fitting with a member .

Conventionally, a pipe for discharging water generated inside the tank body to the sewer side in equipment that has a tank body and generates drainage when used (hereinafter referred to as "drainage equipment") such as washbowls, sinks, and bathtubs. (drainage piping) is known.
These drain pipes are connected to drain ports provided on the floor or the like, and are constructed so that the drain water generated from the drain equipment is discharged to pipes on the sewage side such as underfloor pipes through the drain ports. In such drainage pipes, a drainage joint for joining a plurality of drainage pipes is often used for the purpose of simplification and efficiency of piping.

The drainage pipe described in Patent Document 1 is provided with two washbowls, which are drainage devices, and the pipes from the washbowls are connected to a drain joint (“connecting part” in Patent Document 1) arranged on the floor surface. By doing so, the drainage pipes of each washbowl are merged into one drainage pipe, and the downstream drainage pipes are treated with one drainage pipe, simplifying the drainage piping and reducing plumbing work. Efficient.

Japanese Utility Model Laid-Open No. 4-97962

In the above-mentioned drainage pipe, since a plurality of drainage devices are connected by a drainage joint, draining water from one drainage device may affect the drainage pipes of other drainage devices.
Specifically, when a large amount of wastewater is generated from one drainage device in the above-mentioned drainage piping, and the drainage flows vigorously, the drainage from the drainage device is discharged from the drainage joint to the downstream drainage pipe. is not enough, it may flow into the drain pipe of the other connected drain device and flow back into the washbowl.
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 cannot be discharged to the downstream drainage pipe in time at the drainage joint. Instead, it may flow into the drain pipe of the other connected drain equipment and flow back.
In particular, as in the example of Patent Document 1, when the connection points of the drainage joint from a plurality of drainage devices are located opposite each other, regardless of the drainage performance (drainage processing capacity) of the drainage pipe, one Drainage from a 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 water is drained from one drainage pipe, air is drawn in from other drainage pipes and discharged to the downstream pipe, resulting in a phenomenon called a siphon phenomenon in which negative pressure is generated in the pipe. be. In this case, in the pipes of other drainage equipment that have been drawn in by the negative pressure, the negative pressure causes air drawing noise such as "gurgling", which gives discomfort to indoor users. In addition, depending on the drainage pipe, odors and pests from the sewage side can be prevented by forming a drainage pool called a sealed water trap in the middle of the pipe, which is called a sealed water trap. In some cases, a member with a function to prevent intrusion into the indoor side of the
This water-sealing type drain trap has a trap function by storing a sufficient amount of waste water inside. was drawn in and flowed downstream, resulting in loss of a trapping function called seal breakage.
The present invention has been made in view of the above problems, and is a drainage joint that joins pipes from a plurality of drainage devices to prevent backflow from occurring from one drainage device to another drainage device, To provide a drainage joint provided with a perforated plate member capable of preventing the occurrence of noise and sealing breakage due to negative pressure even if a siphon effect occurs during drainage.

According to the first aspect of the present invention, there is provided a drainage joint provided with a perforated plate member for merging the drainage from at least two or more drainage devices and discharging the same to a drainage port, wherein the drainage from the drainage device flows into the drain joint. A first drainage channel consisting of a vertical tubular body portion provided with a first inlet and a first outlet communicating downward with the drainage port, and covering the vertical portion of the first drainage pipe portion A second drain joint comprising a second drain channel provided with a casing provided with a second inlet on the side and a second outlet downwardly communicating with the drain port, provided as A drainage joint provided with a perforated member, characterized in that a collection portion of the perforated member is provided at the discharge port of the .

In the present invention according to claim 2 , the second discharge port is provided with a collecting portion of a perforated plate member, the center of the perforated plate member is provided with an opening, and the first drain pipe portion is the opening The second discharge port is disposed above the collecting portion of the perforated plate member and drains water through the collecting portion. 2. A drainage joint provided with a perforated plate member according to claim 1 , characterized in that drainage is discharged into the mouth.

The present invention according to claim 3 is configured so that the first drainage channel and the second drainage channel do not merge in the joint member main body until the drainage is discharged into the drainage port. 3. The drainage device connected to the second inlet discharges a larger amount of waste water at one time than the drainage device connected to the second inlet. A drainage joint with a perforated plate member.

According to the fourth aspect of the present invention, at least a portion of the collection portion of the perforated plate member is positioned outside the drainage joint, and the collection portion positioned outside the drainage joint is connected to the first drainage channel 2 or A drainage joint provided with a perforated plate member according to any one of claims 1 to 3 , characterized in that the second drainage channel (3) has a structure for sucking air.

According to the first aspect of the present invention, even if a large amount of wastewater is discharged from one drainage device in a drainage joint that connects drainage pipes from a plurality of drainage devices, backflow occurs in other drainage devices. there is nothing
According to the first and second aspects of the present invention, it is possible to collect dust contained in wastewater and prevent it from flowing out to the downstream side. In addition, by dividing part of the drainage flow path with the collection part of the perforated plate, even if a siphon effect occurs during drainage, the negative pressure impact is reduced, reducing noise and water entrainment due to negative pressure. can be reduced.
According to this invention of Claim 3 , the structure of a drainage apparatus can be clarified.
According to the fourth aspect of the present invention, by sucking air into the first drainage channel or the second drainage channel from the drainage port, negative pressure is not generated on the drainage device side, and the drainage device side It is possible to prevent the occurrence of gurgling noise and the like.

1 is a reference diagram of a drainage pipe that employs the drainage joint of the present invention; FIG. It is a front view of the joint member main body of the first embodiment. Fig. 4 is a plan view of the joint member main body of the first embodiment; It is a bottom view of the joint member main body of the first embodiment. It is a perspective view of the joint member main body of the first embodiment. It is a perspective view of the joint member main body of the first embodiment. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2; 4 is a cross-sectional view taken along the line BB of FIG. 3; FIG. 4 is a cross-sectional view taken along line CC of FIG. 3; FIG. It is a top view of the perforated plate member of the first embodiment. It is a perspective view of the perforated plate member of the first embodiment. It is a sectional view showing the member composition of the main member of the first example. It is a perspective view which shows the member structure of the main member of 1st Example. FIG. 4 is a cross-sectional view showing a combined state of the main members of the first embodiment;

A first embodiment of the present invention will be described below with reference to the drawings.
1 to 14, the drainage pipe employing the drainage joint having the perforated plate member of the first embodiment of the present invention is widely used in business hotels, etc. It relates to the drainage pipe on the indoor side of the bathroom equipped with S, and is described below as a washbowl S and a bathtub B as drainage devices, and a drainage joint for treating the drainage of these drainage devices. The drainage pipe consists of a joint member body 1, a bathtub drain port body 6, a wash basin drain port body 7 and a piping member P, and is discharged to a drain port 5 provided on the floor of the bathroom.
In this embodiment, the bathtub B is installed on the floor surface of the bathroom, is a tank body with an open top, and has a bathtub mounting port B1 for connecting the bathtub drain main body 6 to the bottom surface.
In this embodiment, the washbowl S is a tank body that is attached to an indoor side wall surface and is open at the top. In this embodiment, it is already attached and fixed to the indoor side wall at the start of construction.
When the bathtub B and the washbowl S are compared, as long as they are used normally, the washbowl S generates more water, but the amount of water discharged at one time is greater in the bathtub B. .
Further, a plug lid 8 is attached to the bathtub drain port 6a and the wash basin drain port 7a for closing the bathtub drain port 6a and the wash basin drain port 7a as necessary.
The bathtub drain port main body 6 is a substantially cylindrical member that is connected and fixed to the bathtub mounting port B1 when construction is completed, and has a bathtub drain port 6a therein.
The wash basin drain port body 7 is a substantially cylindrical member that is connected and fixed to the wash basin mounting port S1 when construction is completed, and has a wash drain port 7a therein.
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 washbowl S and discharging it to the drainage port 5, and is a first drainage channel 2 described below. , and a second drainage channel 3 .
The first drainage channel 2, as indicated by the arrow in FIG. It has a first inlet 2a, which is open toward the outside, into which wastewater from the bathtub B, which is a drainage device, flows, and a first outlet 2b, which is open at the lower end of a tubular body part that bends downward and hangs. It becomes
The lower end of the vertical pipe portion forming the first discharge port 2b protrudes downward from the second discharge port 3b, which will be described later. It comprises a fitting portion 2c formed of a groove that fits with 4a.
As shown in FIG. 9, the second drainage channel 3 is provided with a casing part 3c having a bottomed cylindrical shape turned upside down and provided so as to cover the first drainage channel 2. The casing portion 3c has a wall portion on the upper side and an opening on the lower side to form the second discharge port 3b. The circular side portion of the casing portion 3c is formed concentrically with the first discharge port 2b, as shown in the bottom view of FIG. A second inlet 3a is provided at the end.
The first inlet 2a and the second inlet 3a are each oriented substantially horizontally (actually, they are slightly inclined at about 1 to 2 degrees, which is necessary for natural drainage). It faces and is provided in the substantially same height position.
The angle formed by the central axes of the tubular body having the first inlet 2a and the tubular body having the second inlet 3a in a plan view is about 90 degrees, as shown in FIG.
As shown in FIG. 8, a portion of the tubular body forming the first drainage channel 2 and a portion of the horizontal tubular body portion are also configured to serve as the upper wall surface of the casing portion 3c. Become.
Moreover, 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 tubular body made of a resin material such as vinyl chloride, and is made of a straight pipe, a bent pipe, or the like. and form a drainage channel. Further, the straight tubular body includes a hose tube made of a flexible soft PVC tube and a pipe tube made of a hard PVC tube. The hose tube is provided with a spring-like core material to prevent the tube body from becoming a collapsed shape. Also, the bent pipe is made of a hard PVC pipe or a hard resin material such as ABS.
The drain port 5 is an opening having a circular shape in plan view provided on the floor surface F of the bathroom. It consists of A drain trap (not shown) is provided between the drain port 5 and the underfloor pipe to prevent odors and pests from flowing backward from the sewer side to the indoor side.
Moreover, the drain port 5 is provided with a perforated plate member 4 described below.
10 and 11, the perforated plate member 4 is a member that is arranged and fixed in the drain port 5 by fitting, and has an outer peripheral portion that forms a circle in plan view and a center portion of the joint member main body 1. It is provided with an opening 4a that fits into the lower side surface of the vertical portion of the tubular body forming one drainage channel 2, and between the opening 4a and the outer peripheral portion, dust, hair, etc. in the drainage are trapped. It comprises a collecting part 4b for collecting. The collecting part 4b is made up of a plurality of small square openings of 1.4 mm square by combining ribs with a width of about 1 mm in a grid pattern. It stays on the ribs and is separated from the waste water and collected. 10, 11, and 13, only the corresponding portion of the collecting portion 4b is indicated by hatching, and illustration of the rib is omitted.
In addition, the collecting portion 4b of the perforated plate member 4 is not entirely covered by the joint member main body 1 when construction is completed, but is positioned outside the joint member main body 1 in plan view. The collecting part 4b is exposed on the floor surface F of the bathroom and 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 connecting portion is watertightly connected by screw tightening using adhesive or packing, if necessary.
First, the bathtub drain port main body 6 is connected to the bathtub attachment port B1 of the bathtub B, and the wash basin drain port main body 7 is connected to the wash basin attachment port S1 of the wash bowl S, respectively.
Next, the perforated plate member 4 is attached to the drain port 5 , and the fitting portion 2 c of the joint member main body 1 is fitted to the opening portion 4 a of the perforated plate member 4 . Thereby, as shown in FIG. 14, the second discharge port 3b is arranged above the collecting portion 4b of the perforated plate member 4. As shown in FIG. That is, the collecting portion 4b of the perforated plate member 4 is provided at the second discharge port 3b.
Next, a bent pipe is connected to the lower end of the bathtub drain main body 6, and a hose pipe is connected to the downstream end of the bent pipe, and the bathtub B is installed in the bathroom. Further, the downstream end of the hose pipe is connected to the first inlet 2a of the joint member main body 1. As shown in FIG. The piping from the bathtub drain main body 6 to the first inlet 2a is hereinafter referred to as "bathtub piping BP".
Next, a straight hard vinyl chloride pipe is connected to the lower end of the wash basin main body 7 so as to hang down, and a bent pipe is connected to the lower end. Furthermore, after connecting a hose pipe to the downstream end of the bent pipe, the downstream end of the hose pipe is connected to the second inlet 3a of the joint member main body 1 . In addition, the piping from this washbowl drain main body 7 to the second inflow port 3a is hereinafter referred to as "washbowl pipe SP".
In this way, the drain piping for the bathroom according to the first embodiment of the present invention is completed.
With the above configuration, the first inlet 2a connected to the bathtub B is less than the second inlet 3a connected to the washbowl S during normal use. A large amount of wastewater is discharged at once. That is, the bathroom drainage pipe of the present invention is such that "the drainage device connected to the first inlet 2a has a larger amount of drainage at one time than the drainage device connected to the second inlet 3a." It is a large amount of "drainage piping."

This embodiment constructed as described above is used as follows.
When drainage occurs in the bathtub B, the drainage in the bathtub B flows from the bathtub drain port 6a through the bathtub pipe BP into the first inlet 2a, passes through the first drain channel 2, and flows into the first inlet 2a. It is discharged directly into the drain port 5 from the first outlet 2b.
Further, when drainage occurs in the washbowl S, the wastewater in the washbowl S flows from the washbowl drain port 7a into the second inflow port 3a through the washbasin pipe SP, and flows into the second inlet 3a on the lower surface of the casing portion 3c. After passing through the opening of the collecting portion 4b of the perforated plate member 4, it is discharged into the drainage port 5 from the second discharge port 3b.
In addition, when the bath water in the bathtub B is spilled and drainage is generated on the floor surface F of the bathroom, the drainage on the floor surface F of the bathroom is collected by the collecting part of the perforated plate member 4 provided at the drain port 5. It flows into the drain port 5 through the collecting portion 4b, which is not covered with the joint member main body 1, and is discharged.
As for the drainage from the bathtub B, since the drainage (bathing water) accumulated in the bathtub B with a large capacity is discharged at once by removing the cap 8, 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. Drainage from one drainage channel 2 , ie, bathroom drainage, does not flow back into the second drainage channel 3 .
In addition, when a large amount of water is discharged from the first water discharge channel 2, a siphon phenomenon occurs in the water discharge port 5, and the inside of the water discharge port 5 becomes negative pressure, air is drawn in by the negative pressure. Since the air passes through the small opening of the collecting portion 4b, it becomes difficult for the air to pass through, and it is difficult for the air to be drawn in due to the negative pressure.
In particular, when the washbowl S is used and the perforated plate member 4 is wet due to the drainage from the washbasin pipe SP, water droplets adhere to the small opening of the collecting part 4b of the perforated plate member 4, which is the surface tension. , and functions to close the opening of the collecting portion 4b, it becomes even more difficult for air to be drawn in due to the negative pressure.
Further, in this embodiment, part of the collecting portion 4b of the perforated plate member 4 provided in the drain port 5 is not covered with the joint member main body 1, and is exposed on the floor surface F of the bathroom. It is possible to suck air into the drain port 5, the first drain channel 2, or the second drain channel 3 from the exposed collection part 4b. Negative pressure due to the siphon effect can be eliminated.
In the structure that takes in air from the drain port 5 as described above, when a large amount of waste water is generated in the first drain channel 2, the second drain channel 3 and the structure part of the intake of the drain 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 portion where negative pressure is generated. , most of the intake air is taken from the collection part 4b of the perforated plate member 4 provided at the drain port 5, and hardly any air is taken from the washbowl S drain port 7a. As a result, suction and gurgling noise due to the negative pressure occur at the drain port 4, but hardly occur at the wash basin drain port 7a. The drain port 4 is located farther from the user's ear than the wash basin drain port 7a, and even if a gurgling sound is generated, it is not as loud for the user as when it occurs at the wash drain port 7a. Done.

Although the embodiments of the present invention are as described above, the present invention is not limited to the above embodiments, and can be freely modified without changing the gist of the invention.
For example, in the above embodiment, a 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 the trap is placed on the bathtub pipe BP and the washbasin pipe SP. Separate drain traps may also be used. At this time, if a water-sealing type drain trap that generates a trap function by storing wastewater as a seal is used on the washbasin pipe SP, the effect of the negative pressure caused by the siphon effect is the object of the present invention. By reducing the water discharge joint provided with the dish member , it is possible to make it difficult for the sealing water to be drawn in by the negative pressure and the seal to lose its trapping function.

Further, in the above embodiment, the bathtub B and the washbowl S are used as the drainage equipment, but the present invention is not limited to the above embodiment, and can be used for other drainage equipment such as a sink and a washing machine. I do not care.

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

In the above embodiment, two drainage devices are connected to the drainage joint provided with the perforated plate member , but the present invention is not limited to the above embodiment. By providing two or more second inlets 3a and connecting drainage pipes from drainage equipment to each of the first inlet 2a and the plurality of second inlets 3a, three or more drainage The drainage joint may be provided with a perforated plate member for treating the drainage of the equipment.

REFERENCE SIGNS LIST 1 joint member body 2 first drainage channel 2a first inlet 2b first outlet 2c fitting portion 3 second drainage channel 3a second inlet 3b second outlet 3c casing portion 4 Perforated plate member 4a Opening 4b Collection part 5 Drain port 6 Bathtub drain port body 6a Bathtub drain port 7 Wash basin drain port body 7a Wash drain port 8 Plug cover B Bathtub B1 Bathtub mounting port F Floor surface of bathroom P Piping member S Wash basin Bowl S1 Washbasin attachment port BP Bathtub piping SP Washbasin piping

Claims (4)

A drainage joint provided with a perforated plate member for merging drainage from at least two drainage devices and discharging the same to a drainage port,
a first drainage channel consisting of a vertical tubular body portion provided with a first inlet for inflow of drainage from a drainage device and a first outlet downwardly communicating with the drainage port;
A second casing provided to cover the vertical portion of the first drain pipe portion, provided with a second inlet on the side and a second outlet communicating with the drain port below. a drainage channel;
A drainage joint provided with a perforated plate member, characterized in that a collection portion of the perforated plate member is provided at the second outlet of the drainage joint consisting of: A collecting portion of a perforated plate member is provided at the second discharge port ,
An opening is provided in the center of the perforated plate member,
The first drain pipe part has a fitting part that fits through the opening, and discharges the waste water into the drain port,
2. The perforated plate member according to claim 1, wherein the second discharge port is disposed above the collecting portion of the perforated plate member and discharges the wastewater into the drain port via the collecting portion . drainage fittings. The first drainage channel and the second drainage channel are configured so that they do not merge in the joint member body until the drainage is discharged into the drainage port, and the drainage device connected to the first inlet is the second 3. A drainage joint provided with a perforated plate member according to claim 1 or 2 , characterized in that the amount of drainage drained at one time is greater than that of a drainage device connected to the inflow port of the drainage joint. At least a part of the collection part of the perforated plate member is positioned outside the drainage joint, and the structure is such that air is sucked from the collection part positioned outside the drainage joint into the first drainage channel or the second drainage channel . A drainage joint provided with the perforated plate member according to any one of claims 1 to 3 , characterized in that it is provided.

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