JPH0743249Y2 - Synthetic resin drainage basin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an improvement of a synthetic resin drainage basin having a trap function for preventing backflow of odors.

[Conventional technology]

Conventionally, in the piping work for domestic drainage, a synthetic resin drainage basin having a trap function as shown in Figs. 13 and 14 is installed at the connection point between the main drainage pipe and the drainage branch pipe. , Prevents odor from flowing back to the kitchen or bathroom through the drain branch pipe.

This drainage basin made of synthetic resin has an invert groove 103 and a trap 104 on both sides of an overflow weir 102 rising from the bottom of the drainage basin 101.
The socket part 10 at both ends of the invert groove
Main drainage pipes 106, 106 are inserted and connected to 5, 105, and a height adjusting cylinder (adjuster) 108 is fitted and mounted in a fitting groove 107 formed in an upper opening edge of the drainage basin 101. A drain pipe 109 is inserted into the height adjusting cylinder 108, and the lower end of the hanging pipe 111 connected to the tip of the branch pipe via an elbow joint 110 is immersed in the water in the trap 104. hand,
It is water-sealed so that odor does not flow back into the room through the branch pipe 109.

[Problems to be solved by the device]

However, the above-mentioned synthetic resin drainage basin does not fit in the trap 10
Since the hanging pipe 111 exists in the center of 4, the hanging pipe 111 becomes an obstacle when cleaning the trap 104, and there is a problem that the cleaning work is difficult.

Such a problem is that if the elbow joint 110 is detachably connected to the tip of the drainage branch pipe 109, the hanging pipe 111 can be removed during cleaning.
Can be removed together with the elbow fitting 110, so that is solved in the first place. However, it is troublesome to remove the hanging pipe 111 each time cleaning is performed, and if the elbow joint 110 is detachable, the pressure of the water flowing through the drain branch pipe 109 may cause the elbow joint 110 to fall off naturally. However, there was a problem that the backflow of odor could not be reliably prevented.

The present invention has been made in view of the above, and its purpose is to easily perform the cleaning work of the trap without removing the hanging pipe, and to reliably prevent the backflow of odor. To provide a synthetic resin drain pipe.

[Means for Solving the Problems]

In order to achieve the above object, the present invention is a synthetic resin drainage basin provided with an invert groove and a trap on both sides of an overflow weir that rises from the bottom of a basin. It is characterized in that the trap extension portion is formed so as to project outward from the side wall of the drainage basin.

[Action]

In the synthetic resin drainage basin of the present invention, the hanging pipe connected to the tip of the drainage branch pipe through the elbow joint is inserted into the pipe insertion hole of the trap extension formed to project to the outside of the drainage basin side wall. Since its lower end is immersed in the water of the trap expansion part and is sealed with water, the trap inside the drainage basin does not have an obstructing hanging pipe. Therefore, it is possible to easily clean the trap without removing the hanging pipe while it is still inserted in the trap expansion portion, and the elbow joint and the hanging pipe can be irremovably connected to the tip of the drainage branch pipe. Therefore, there is no fear that the elbow joint or the like will fall out due to the pressure of the water flowing through the drainage branch pipe, and the odor will flow back.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view of a synthetic resin drainage basin according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view taken along line I-I of FIG.
FIG. 3 is an enlarged partial sectional view taken along the line II-II of FIG.

This synthetic resin drainage basin 1a is an overflow weir that stands up from the bottom of the basin.
Invert groove 3a and trap 4a are formed on both sides of 2a, and sockets 5a, 5a for inserting and connecting the main drainage pipe are formed on both ends of the invert groove 3a so as to project outward from the side wall of the drainage basin. A fitting groove 6a for fitting a height adjusting cylinder (adjuster) is provided around the upper end opening edge of the drainage basin.

A box-shaped trap extension 7a connected to the trap 4a is formed at a portion adjacent to one socket 5a (upstream socket) so as to project outward from the drainage basin side wall. This trap expansion portion 7a is a trap-side drainage basin side wall protruding outward in a rectangular tube shape, and its tip opening is watertightly closed by a lid 8a. A tube insertion hole 9a for inserting a hanging tube is formed, and a plug body 10a is detachably inserted in the tube insertion hole 9a. In addition, 11a is a pipe insertion hole 9a to improve watertightness.
A packing 12a attached to the periphery of is a leg piece for enhancing the easiness of placement of the drainage basin.

Although the pipe insertion hole 9a is formed in the upper wall of the trap expansion portion 7a, the pipe insertion hole 9a may be provided at the time of manufacturing or at the time of construction. That is, at the time of manufacture, the same thickness is manufactured without providing the pipe insertion hole 9a in the upper wall, and at the time of construction, if a pipe insertion hole that matches the size of the hanging pipe is drilled with a hole saw or the like, the hanging pipe of any size can be obtained. However, the advantage that it can be inserted is added. Although the trap expansion portion 7a is closed by the lid body 8a, the lid body 8a may be integrally manufactured, but since it is an undercut product, it is preferable to close it with the lid body 8a as in this embodiment. .

FIG. 4 is a plan view showing one mode of use of the synthetic resin drainage basin 1a configured as described above, and FIG. 5 is a sectional view taken along line III-III in FIG. That is, this synthetic resin drainage basin 1a
The main drainage pipes 13, 13 are inserted and connected to the sockets 5a, 5a as shown in the drawing, and the drainage branch pipe 14 is inserted in the pipe insertion hole 9a of the trap extension 7a in which the plug body 10a is removed. A hanging tube 16 connected to the tip via an elbow joint 15 is inserted. In the hanging pipe 16, the lower end of the hanging pipe needs to be inserted to a position lower than the upper end of the overflow weir 2a so that the hanging pipe 16 is water-sealed by the accumulated water in the trap expansion portion 7a. Although not shown, a height adjusting cylinder corresponding to the burial depth of the drainage basin 1a is fitted and mounted in the fitting groove 6a of the drainage basin 1a.

With this piping, the water that has flowed through the upstream drainage main pipe 13 flows through the invert groove 3a of the drainage basin 1a to the downstream drainage main pipe 13 and is finally drained to the sewer main. .
On the other hand, the water flowing from the drain branch pipe 14 through the hanging pipe 16 into the trap expansion portion 7a moves to the trap 4a inside the drainage basin,
The water overflowing from the overflow weir 2a flows down to the invert groove 3a and merges, and flows through the downstream main drain pipe 13 to be drained. In this way, when the water in the trap 4a flows over the overflow weir 2a and flows into the invert groove 3a, solid substances that cannot pass through the overflow weir 2a accumulate inside the trap 4a, so that traps are periodically generated. It is necessary to clean 4a to remove solids,
In this drainage basin 1a, since the hanging pipe 16 is inserted into the trap expansion portion 7a protruding outward from the side wall of the drainage basin, the hanging pipe 16 never interferes with the cleaning of the trap 4a.
Therefore, the trap 4a can be easily cleaned while the hanging pipe 16 is still inserted in the trap extension 7a.
There is no need for the troublesome work of pulling out and removing the hanging pipe together with the elbow joint as in the conventional drainage basin. Further, when it is not necessary to remove the hanging pipe 16 together with the elbow joint 15 in this way, the elbow joint 15 and the hanging pipe 16 can be irremovably connected to the tip of the drainage branch pipe 14 with an adhesive, so that the drainage branch There is no concern that the elbow joint 15 will fall out due to the pressure of the water flowing through the pipe 14, and the odor can be reliably prevented from flowing back.

Incidentally, since the solid matter existing in the trap expansion portion 7a naturally moves toward the trap 4a by the force of the water flowing out from the lower end of the hanging pipe 16, it is not necessary to perform the cleaning operation of the trap expansion portion 7a. In order to make the movement of the solid matter smoother, it is preferable that the bottom surface of the trap expansion portion 7a be an inclined surface, as indicated by the alternate long and short dash line in FIG.

FIG. 6 is a plan view of a synthetic resin drainage basin according to another embodiment of the present invention, and FIG. 7 is an enlarged sectional view taken along line IV-IV of FIG. According to this synthetic resin drainage basin 1b, the fitting groove 17b is formed along the center line from the bottom of the basin to the side wall,
A plate body that constitutes the overflow weir 2b is detachably fitted in the fitting groove 17b. And the overflow weir 2b made of this plate
Has an invert groove 3b formed on one side thereof, and a groove-shaped trap 4b symmetrical to the invert groove 3b formed on the other side thereof. Sockets 5b, 5b are formed at both ends of the invert groove 3b so as to project outward from the side wall of the drainage basin.
Trap extension portions 7b, 7b having the same shape as 5b, 5b are formed so as to project outward from the side wall of the drainage basin. These sockets 5b, 5
The tip openings of b and the trap expansion portions 7b, 7b are closed by a lid body 8b that is detachably attached, and a plug body 10b is provided in a tube insertion hole 9b formed in each upper wall. Has been inserted. Incidentally, 6b is a fitting groove for fitting the height adjusting cylinder. Further, the tip of the trap expansion portion 7b and the upper wall may be integrally closed, and a main pipe insertion hole and a drooping pipe insertion hole may be provided by perforating at the time of construction.

FIG. 8 shows a synthetic resin drainage basin 1b configured as described above.
FIG. 9 is a plan view showing one usage mode, and FIG. 9 is an enlarged sectional view taken along line VV of FIG. According to this, the lids 8b, 8b
Main drainage pipes 13, 13 are inserted and connected to the sockets 5b, 5b from which the trap 10b has been removed, and one trap extension 7b
In the pipe insertion hole 9b of the elbow joint 15 at the end of the branch pipe 14 for drainage.
The drooping tube 16 connected via the is inserted. Then, a height adjusting cylinder (not shown) according to the burial depth of the drainage basin 1b is fitted and mounted in the fitting groove at the upper end opening edge of the drainage basin 1b.

If the above-described piping is used, the hanging pipe 16 does not get in the way, so that the hanging pipe 16 is the same as in the case of FIGS. 4 and 5 described above.
Easy trap 4b without removing the elbow fitting 15
Since the elbow joint 15 and the hanging pipe 16 can be connected to the tip of the drainage branch pipe 14 using an adhesive so that the elbow joint 15 and the hanging pipe 16 cannot be pulled out, it is possible to reliably prevent backflow of odors. .

If necessary, a hanging pipe may be inserted into the pipe insertion hole 9b of the other trap expansion portion 7b to connect the two drainage branch pipes.

FIG. 10 is a plan view showing another mode of use of the drainage basin 1b, showing a mode of use substantially similar to the conventional Y-shaped invert basin. According to this, the main drainage pipes 13, 13, 13 are inserted and connected to both sockets 5b, 5b from which the lid body 8b has been removed and one trap extension portion 7b, and the plate body forming the overflow weir 2b is removed. Has been. Therefore, the trap extension 7b
The water flowing in from the main drainage pipe 13 connected to the above flows into the invert groove 3b over the fitting groove 17b at the bottom of the groove, and joins the water flowing in from the main drainage pipe 13 connected to the socket 5b on the upstream side. Through the drainage main pipe 13 on the downstream side to the main sewer.

In addition to this, the drain main pipes 13 and 13 are inserted and connected to the upstream socket 5b and the downstream trap extension 7b, or conversely to the upstream trap extension 7b and the downstream socket 5b. By connecting the main drainage pipes 13 and 13, the drainage pipes can be displaced in parallel. In addition, both sockets 5b, 5b and both trap extensions 7b, 7b
Remove the lid 8b of each of the main drainage pipes 13,13,13,13
It is also possible to connect and connect two drainage pipes in parallel.

FIG. 11 is a plan view of a synthetic resin drainage basin according to still another embodiment of the present invention, and FIG. 12 is a sectional view showing one mode of use of the drainage basin. This drainage basin 1c is one in which the present invention is applied to a so-called small diameter basin with a small upper opening diameter of 250 mm or less. And the trap 4c is formed.
At both ends of the invert groove 3c, sockets 5c, 5c for inserting and connecting the main drainage pipe are formed to project outward from the side wall of the drainage basin, and the upper end of the drainage basin 1c is provided with a main drainage pipe. A socket 18c for inserting and connecting a height adjusting tube having a slightly larger diameter is formed. And trap 4
A trap expansion portion 7c connected to c is formed so as to project in a direction orthogonal to the invert groove 3c, and its tip opening is a lid body.
Blocked at 8c. A pipe insertion hole 9c is formed in the upper wall of the trap expansion portion 7c, and a plug body 10c is inserted therein.
Incidentally, 11c is a packing attached to the tube insertion hole 9c.
Further, the tip and the upper wall of the trap expansion portion 7c may be perforated at the time of construction to omit the lid and the plug.

A small synthetic resin drainage basin with a small top opening diameter.
1c is suitable for home plumbing work with a small burial space, and both sockets 5c and 5c have a main drain pipe (not shown).
However, a pipe obtained by cutting a long synthetic resin pipe, that is, a height adjusting pipe (not shown) is inserted and connected to the socket 18c at the upper end of the drainage basin. Then, the hanging pipe 16 connected to the tip of the drainage branch pipe 14 via the elbow joint 15 is inserted into the pipe insertion hole 9c of the trap expansion portion 7c, and the lower end thereof is immersed in the accumulated water of the trap expansion portion 7c. And then water sealed.

Also in this case, since the hanging pipe 16 is inserted into the trap expansion portion 7c and does not disturb the cleaning, the synthetic resin drainage basin 1 described above is used.
Similar to a and 1b, the trap 4b can be easily cleaned without removing the hanging pipe 16, and the backflow of odor can be reliably prevented.

Generally, since such a small drainage basin cannot form a trap large enough to insert a hanging pipe, a U-shaped trap has conventionally been connected to prevent backflow of odor. Since the hanging pipe 16 can be directly inserted and formed by forming the expansion portion 7c, the U-shaped trap becomes unnecessary, the number of parts is reduced, and the piping space can be further reduced.

[Effect of device]

As is clear from the above description, according to the synthetic resin drainage basin of the present invention, the troublesome work of removing the hanging pipe together with the elbow joint is unnecessary, and the trap pipe can be easily attached while the hanging pipe is attached to the trap extension. Since the cleaning work can be performed and the hanging pipe can be connected to the drainage branch pipe through the elbow joint so as not to fall out, a remarkable effect of reliably preventing backflow of odor can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view of a synthetic resin drainage basin according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view taken along line I-I of FIG.
FIG. 3 is an enlarged partial sectional view taken along line II-II of FIG. 1, FIG. 4 is a plan view showing one mode of use of the drainage basin, and FIG. 5 is taken along line III-III of FIG. FIG. 6 is a plan view of a synthetic resin drainage basin according to another embodiment of the present invention, FIG. 7 is an enlarged cross-sectional view taken along line IV-IV of FIG. 6, and FIG. 8 is the same. FIG. 9 is a plan view showing one mode of use of the drainage basin, FIG. 9 is an enlarged sectional view taken along line VV of FIG. 8, and FIG. 10 is a plan view showing another mode of use of the drainage basin, FIG. Is a plan view of a synthetic resin drainage basin according to still another embodiment of the present invention, FIG. 12 is a cross-sectional view showing one usage form of the drainage basin, and FIG. 13 is a plan view showing a usage form of a conventional drainage basin. FIG. 14 is a sectional view taken along line VI-VI in FIG. 1a, 1b, 1c ... Synthetic resin drainage basins, 2a, 2b, 2c ... Overflow weirs, 3a, 3
b, 3c ... invert groove, 4a, 4b, 4c ... trap, 7a, 7b, 7c ...
Trap extension, 9a, 9b, 9c ... Pipe connection holes.

Claims (1)

[Scope of utility model registration request] 1. In a drainage basin having an invert groove and a trap on both sides of an overflow weir rising from the bottom of a basin, a trap expansion part connected to the trap and having a hanging pipe inserted into an upper wall thereof is located outside a side wall of the drainage basin. A synthetic resin drainage basin, which is formed by protruding.