JPH11241393A - Piping structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the reverse flow of the filthy odor to each equipment by providing a connection part to a drainage pipe to a side wall of a catch basin body, and providing an odor preventive check valve which is openable/closable according to presence/ absence of rain inflow from the drainage pipe to an end part on the catch basin side of the connection part. SOLUTION: An adhesive is applied to an end part of one sewage inflow pipe, and the end part is inserted into a socket 6 of one connection part 3 of a catch basin body 1. Then, the adhesive is applied to an end part of an insert 6a of the other connection part 3a of the body 1, and the insert 6a is inserted into the end part of a sewage outflow pipe. An end part of a rain water inflow pipe 7 is inserted in an insertion hole 5 of the body 1, and a spacer is fitted to an upper surface of a tip part of the rain water inflow pipe 7. One side of a hinge 81 having a holding spring 83 is fitted to the spacer, a disk 82 is fitted to the other side of the hinge 81, and the disk 82 is abutted on a tip surface of the rain water inflow pipe 7. In addition, a lid part 2 is covered over and embedded into the body 1. When rain enters the body 1, the disk 82 is turned and opened, otherwise the disk 82 is abutted on an inlet surface of the rain water inflow pipe 7. The odor is prevented from flowing in the reverse direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piping structure in which a drainage basin is provided in a drainage pipe for sewage and rainwater or a drainage pipe for sewage only.

[0002]

2. Description of the Related Art Conventionally, as a piping structure of a sewage pipe and a rainwater pipe, as a usual method, a drainage basin is disposed in the middle of a drainage pipe for sewage and rainwater or a drainage pipe for only sewage.
A connection part with a rainwater pipe at the top of this drainage basin and a connection part with a sewage pipe at the bottom are provided, and the rainwater is combined with the sewage in the drainage basin, and the sewage and rainwater are drained through the sewage pipe. there were.

In addition, a drainage basin is disposed in the middle of a drainage pipe for only sewage, a sewage inflow pipe is connected to a part of the side wall of the drainage bulge bulging outward, and an elbow is connected to a tip of the sewage inflow pipe. A trap consisting of a short pipe and a drainage section is attached, sewage flowing from the trap is stored in the drainage section, and sewage overflowing from the drainage section is drained through a sewage outflow pipe. (Described in Japanese Utility Model Laid-Open No. 60-80188)

[0004]

In the piping structure using the drainage basin as described above, the equipment and the sewage can be used to prevent the odor generated from the sewage pipe from leaking from the sewage pipe at the bottom. A trap is provided between the pipes to prevent the backflow of odor from the sewage pipe to each device. However, in the rainwater inflow pipe at the upper part, there was no backflow device for the odor, and there was a problem that the odor leaked out of the drainage basin through the rainwater inflow pipe and became unpleasant around.

In a pipe structure using a drainage basin such as the latter, since a trap composed of an elbow, a short pipe and a drainage section is provided at the tip of the sewage inflow pipe, the trap from the drainage section is contaminated. There is no backflow of odor into the sewage inflow pipe. However, when the sewage inflow pipe is connected to the drainage basin and the trap at the tip is inserted into the drainage reservoir, the elbow has a radius of curvature. At a position away from the side wall by a radius of curvature. For this reason, the drainage basin must be larger than the length of the radius of curvature, which results in a large drainage basin. The drainage basin cannot be made smaller, and the drainage basin cannot be downsized. Was. Also, when the water level in the drainage section falls below the short pipe, the trap does not function, and the odor from the drainage section flows backward, and it becomes uncomfortable around each device. Was.

Accordingly, an object of the present invention is to provide a drainage basin used for a junction of a sewage pipe and a drainage pipe or a drainage pipe for only sewage, so that there is no backflow of odor from the drainage pipe to each device, and the drainage pit is not used. It is to provide a drainage basin that can be downsized.

[0007]

According to a first aspect of the present invention, there is provided a piping structure for connecting a drainage basin having an opening for inspection at an upper portion and a connecting portion with a wastewater pipe at a bottom portion, and a rainwater pipe. A connection portion with a rainwater pipe is provided on a side wall of the drainage basin main body, and an odor prevention check valve is provided at an end of the connection portion on the side of the drainage basin, which can be freely opened and closed depending on whether rainwater flows in from the rainwater pipe. Is what it is.

Further, the piping structure of the present invention according to claim 2 is
A drainage tub having an opening for inspection at the top, a drainage tub with a connection at the bottom, and a piping structure for connecting another sewage pipe, and a side wall of the drainage basin main body, the sewage pipe being connected to the other sewage pipe. A connection portion is provided, and an odor prevention check valve which is openable and closable according to the presence or absence of inflow of wastewater from the other wastewater pipe is provided at an end of the connection portion on the drainage basin side.

Further, the piping structure of the present invention according to claim 3 is:
The piping structure according to claim 1 or 2, wherein a basket body is provided below the deodorization check valve.

In the present invention, the material of the drainage basin may be any suitable material as long as it can be connected to the rainwater inflow pipe and the sewage inflow pipe, and a deodorant check valve can be attached to the tip of the rainwater inflow pipe. It is preferable to use a resin, especially a hard vinyl chloride resin or a polypropylene resin, because of good appearance and light weight. In addition, the manufacturing method is a rigid vinyl chloride resin, polypropylene resin, injection molding method,
This is preferable because the drainage basin main body and the connection part can be integrally molded and the appearance is good.

According to the first aspect of the present invention, the shape of the connecting portion of the side wall of the drainage basin body with the rainwater inflow pipe can be connected to the rainwater inflow pipe, and the odor prevention check valve can be freely opened and closed at the tip of the rainwater inflow pipe. If it can be attached, it may be in an appropriate shape.For example, on the side wall of the drainage basin main body, an insertion hole of approximately the same size as the tip of the rainwater inflow pipe is provided. It is preferable to insert a odor prevention check valve that can be freely opened and closed at the inserted end portion, because the odor control check valve that can be freely opened and closed can prevent dirty odor from flowing into the rainwater inflow pipe.

Also, a short pipe having a receiving port is attached to the side wall of the drainage basin main body, and the tip of a rainwater inflow pipe is inserted into this receiving port to attach a rainwater inflow pipe. An open / close odor control check valve may be attached to the end on the side.

Further, the shape of the connecting portion of the bottom with the sewage pipe may be an appropriate shape as long as the sewage pipe can be connected and the flow of sewage does not partially block at the connecting portion. If the connecting part is a short pipe with a receiving port and the connecting part of the sewage pipe is inserted into the receiving port so that the inner surface of the sewage pipe and the inner surface of the invert part of the drainage basin are almost flush, the flow of sewage This is preferable because it does not hinder the operation.

According to the second aspect of the present invention, the shape of the connecting portion between the side wall of the drainage basin body and the sewage pipe can be connected to the sewage pipe, and the flow of sewage does not partially block at the connecting portion, so that the sewage pipe can be connected. If it is possible to attach an openable / closable deodorant check valve to the end of the drain basin, an appropriate shape may be used.For example, an insertion hole having substantially the same size as the end of the sewage pipe is provided on the side wall of the drainage basin body. If the tip of the sewage pipe is inserted into the insertion hole and an openable / closable deodorization check valve is attached to the inserted end, the odor prevention check valve can prevent the odor from flowing into the sewage pipe. preferable.

Further, a short pipe having a receiving port is attached to the side wall of the drainage basin main body, and the tip of a sewage pipe is inserted into this receiving port.
A sewage pipe may be attached, and an openable / closable deodorant check valve may be attached to the end of the short pipe opposite to the port.

Further, the shape of the connecting portion of the side wall of the drainage basin with the sewage pipe may be any suitable shape as long as the sewage pipe can be connected and the flow of sewage is not partially blocked at the connection portion. It is preferable to provide an insertion hole having substantially the same size as the tip of the sewage pipe on the side wall of the main body and insert the tip of the sewage pipe because the sewage can smoothly flow through the sewage pipe.

Further, a short pipe having a receiving port may be attached to a side wall of the drainage basin body, and a distal end of a sewage pipe may be inserted into the receiving port to attach a sewage pipe.

In the present invention, the connection of the sewage pipe to the drainage basin is such that the sewage pipe has a constant gradient from the inflow side to the outflow side so that the outflow side becomes lower.
In addition, it is preferable that the rainwater pipe has a certain gradient so as to flow into the drainage basin, because the wastewater and the rainwater easily flow.

According to the first aspect of the present invention, the structure and shape of the odor control check valve which can be opened and closed are opened by the power of rainwater flowing into the odor control check valve, and when the odor control check valve is closed, the odor control valve is opened from the sewage pipe. Any shape may be used as long as the odor of the rainwater does not flow through the rainwater pipe.For example, a disk that closes the rainwater pipe at the front end face of the rainwater pipe inlet is provided by inserting the tip of the rainwater pipe into the drainage basin. If the diameter of this disc is almost the same as or slightly larger than the rainwater pipe, a hinge is attached to the upper end of this disc and the upper end of the rainwater pipe inlet, and this hinge is connected with a holding spring, When rainwater flows into the drainage basin from the rainwater pipe inlet, when the rainwater flows upward around the hinge axis to open the disk, and when rainwater does not flow into the drainage basin from the rainwater pipe inlet. , Because the disk is almost vertical and closes the storm drain inlet. There.

According to the second aspect of the present invention, the structure and shape of the openable and closable deodorant check valve can reduce the distance from the inflow side wall of the drainage reservoir to the deodorant check valve. And, when the deodorization check valve is closed, any shape may be used as long as the odor from the drainage reservoir of the drainage basin does not flow backward through the sewage pipe. The distance from the inlet side wall to the tip end of the sewage pipe inlet is made as short as possible, and a disc that closes the sewage pipe is provided almost vertically on the tip end face of the sewage pipe inlet. It is almost the same as or slightly larger than the above, and a hinge is attached to the upper end of this disk and the upper end of the sewage pipe inlet, and this hinge is connected with a holding spring, and sewage flows into the drainage basin from the sewage pipe inlet. When the disc is opened, the disc is opened When the sewage does not flow to the drainage 桝内 from sewage pipe inlet, the disc is to block the sewage pipe inlet becomes almost vertical, since it deodorizing a simple structure, preferred.

The shape of the basket body according to claim 3 of the present invention may be any appropriate shape as long as it can receive garbage and dirt and the like flowing together with rainwater and sewage from a rainwater pipe or a sewage pipe (inflow side). For example, the bottom and side walls of the basket body are formed in a net shape, attached to the rainwater pipe or sewage pipe inlet, and the rainwater, sewage, garbage, or filth from the stormwater pipe or sewage pipe is poured into the basket body, and the garbage body is used to remove trash or filth. Receiving, draining only rainwater or sewage into the drainage of a sewage pipe or drainage basin and draining from the stormwater pipe or sewage pipe (outflow side) can remove dust and dirt with a simple structure. ,preferable.

(Operation) In the present invention according to claim 1, a piping structure for connecting a drainage basin having an opening for inspection at an upper part and a connecting part with a sewage pipe at a bottom part, and a rainwater pipe, A connection to the rainwater pipe is provided on the side wall of the basin body,
An odor-preventing check valve is provided at the end of the connection basin on the drainage basin side so that it can be opened and closed depending on the presence or absence of rainwater from the storm water pipe. By blocking the rainwater, there is no backflow of the odor generated from the rainwater pipe, and the inflow of the odor from the rainwater pipe to each device can be prevented.

Further, since an openable and closable deodorization check valve is attached to the end face of the rainwater pipe inlet inserted into the drainage basin, an elbow or the like having a radius of curvature can be compared with a trap attached to the tip of the rainwater pipe. Therefore, the distance from the side wall of the drainage basin to the odor control check valve attached to the rainwater pipe inlet can be reduced, and the drainage basin can be downsized.

According to the second aspect of the present invention, there is provided a piping structure for connecting a drainage basin having an opening for inspection at an upper portion, a connecting portion with a sewage pipe at a bottom portion, and another sewage pipe, On the side wall of the basin body, a connection portion with the other sewage pipe is provided, and at the end of the connection portion on the drain basin side, the odor preventing check valve that can be opened and closed by the presence or absence of sewage from the other sewage pipe. When waste water does not flow from the waste water pipe,
By blocking the sewage pipe with the deodorization check valve, there is no backflow of odor generated from the drainage reservoir of the drainage basin, and the inflow of odor from the sewage pipe to each device can be prevented.

Further, since an openable and closable deodorization check valve is attached to the end face of the sewage pipe inlet inserted into the drainage basin, a trap having an elbow or the like having a radius of curvature attached to the tip of the sewage pipe is installed. In comparison with this, the distance from the inflow side wall of the drainage basin to the openable and closable deodorization check valve attached to the inlet of the sewage pipe can be reduced, and the drainage basin can be downsized.

According to the third aspect of the present invention, since the basket structure is provided below the odor control check valve in the piping structure according to the first and second aspects, it is possible to prevent the rainwater pipe or the sewage pipe from being provided. By catching garbage and dirt and the like flowing with the drainage, only rainwater and wastewater can be drained to the drainage pipe and the drainage basin of the drainage basin and drained from the drainage pipe.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 3 show an example of the piping structure of the present invention. FIG. 1 (a) is an explanatory view of the drainage tub with the lid removed and viewed from above, and FIG. X
(C) is an explanatory view taken along the line Y-Y of (a),
FIG. 3 is an enlarged explanatory view of a portion B in FIG.

In FIG. 1, G is a drainage basin, and the drainage basin G is made of a vinyl chloride resin. The drainage basin main body 1, the upper lid 2, and the bottom are connected to a sewage inflow pipe and a sewage outflow pipe. 3,
3 and an insertion hole 4 for a rainwater inflow pipe 7 at the top. The connecting portion 3 of the sewage inflow pipe at the bottom comprises a short pipe 5 having a receiving port 6, and the connecting part 3a of the sewage outflow pipe comprises a short pipe 5a having a port 6a. The insertion hole 4 of the rainwater inflow pipe 7 at the upper part is made substantially the same size as the rainwater inflow pipe 7. The drainage basin main body 1, the connecting portions 3, 3a of the sewage inflow pipe and the sewage outflow pipe, and the insertion hole 4 are integrally formed by an injection molding method.

The distal end of the rainwater inflow pipe 7 is inserted into the insertion hole 4, and the distance from the side wall of the drainage basin main body 1 to the distal end face of the rainwater inflow pipe 7 is determined by mounting an openable and closable deodorant check valve 8. The length of one side of the L-shape of a hinge (described later) 81 as a part is substantially the same. At the tip of the rainwater inflow pipe 7 inside the drainage basin body 1, a cage body 9 having a net-like bottom and side walls and a rectangular cross-sectional shape, and an openable and closable deodorant check valve 8 are provided.
Is attached. Rainwater, dust and the like from the rainwater inflow pipe 7 are poured into the basket body 9, the basket body 9 receives the dust and the like, and only the rainwater is merged with the wastewater pipe of the drainage basin G to be drained.

The openable and closable deodorant check valve 8 has an L-shaped hinge 81 as a mounting part and a disk 82 for closing the rainwater inflow pipe 7.
, A holding spring 83, and a spacer 84. The hinge 81 is attached to the tip of the rainwater inflow pipe 7 and the upper end of the disk 82 substantially at the center via a spacer 84. The length of one side of this L-shaped hinge 81 is
The length is as short as possible, and is large enough to support the openable and closable deodorant check valve 8 with this one side mounting portion. The spacer 84 is attached to the upper surface of the tip of the rainwater inflow pipe 7, one side of the L-shaped hinge 81 is attached to the spacer 84, and the other side is attached to the upper end of the disk 82 substantially at the center. The disk 82 becomes substantially vertical, and the disk 8
Numeral 2 abuts against the end face of the rainwater inflow pipe 7 to prevent the backflow of dirty odor from the drainage basin G to the rainwater inflow pipe 7.

Next, the use state of the drainage basin G of the above embodiment will be described. Piping from the sewage pipe to the drainage basin G is performed. First, apply an adhesive to the end of one sewage inflow pipe,
The lower end of the drainage basin body 1 is inserted into the receiving port 6 of one of the connecting portions 3, and the lower end of the drainage basin body 1 is coated with an adhesive at an end of the other end 6 a of the connecting portion 3 a. Of the other connecting portion 3a is connected to the end of the drainage tub body 1 by connecting the sewage inflow pipe, the sewage outflow pipe, and the drainage basin body 1 to the end of the connection section 3a.

Next, the end of the rainwater inflow pipe 7 is inserted into the insertion hole 4 in the upper part of the drainage basin main body 1, and a spacer 84 is attached to the upper surface of the tip of the rainwater inflow pipe 7.
4 is attached to one side of an L-shaped hinge 81 with a holding spring 83, and then a disk 82 is attached to the other side of the L-shaped hinge 81, and the disk 82 is attached to the end face of the rainwater inflow pipe 7. Abut
Next, a cage body 9 having a rectangular cross section and a bottom surface or a side wall surface is attached to the tip of the rainwater inflow pipe 7.
Then, the drainage basin body 1 is buried with the cover 2 covered.

Then, the end of the rainwater inflow pipe 7 is inserted into the drainage basin main body 1, and the rainwater inflow pipe 7 is provided with an openable and closable deodorant check valve 8 for closing the inflow pipe at the inlet. When rainwater flows into the drainage basin main body 7 from above, the disc 82 opens by rotating upward about the hinge 81 axis by the flow of the rainwater, and the disc 82 opens. When rainwater does not flow into the disc 8, the
2 is substantially vertical, and the disk 82 abuts on the entrance surface of the rainwater inflow pipe 7, thereby preventing the backflow of the odor from the wastewater pipe to the rainwater inflow pipe 7.

An openable / closable deodorant check valve 8 is attached to the end face of the inlet of the rainwater inflow pipe 7 inserted into the drainage basin main body 1. The distance from the side wall of the drainage basin body 1 to the odor control check valve 8 attached to the inlet of the rainwater inflow pipe 7 can be made smaller than that of the trap attached to the tip of the drainage basin. can do.

Since a cage 9 capable of receiving rainwater, dust, etc. is provided below the entrance of the rainwater inflow pipe 7,
By receiving the garbage and the like flowing with the rainwater from the rainwater inflow pipe 7, only the wastewater can be combined with the wastewater pipe of the drainage basin G and drained.

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 2 shows another embodiment of the piping structure of the present invention, and FIG.
(B) is an explanatory view taken along the line XX of (a), and (c) is an explanatory view taken along the line YY of (a).

The piping structure shown in FIG. 2 is different from the drainage basin main body 1 shown in FIG.
The only difference is that a connection point for the sewage inflow pipe at the upper end of a and a sewage outflow pipe at the lower end is provided, and the structure, mounting method and operation are almost the same except for the following structure and operation. Therefore, only the differences will be described, and the names and numbers of the openable and closable deodorant check valve and the basket are the same as those of the embodiment, and the other description will be omitted.

In FIG. 2, H denotes a drainage basin, and the drainage basin H comprises a drainage basin main body 1a, an upper lid 2a, and a lid 2a.
At the bottom of the sewage inflow pipe 13 and at the bottom of the sewage outflow pipe 14. The insertion hole 11 of the sewage inflow pipe 13 at the top is made substantially the same size as the sewage inflow pipe 13, and the insertion hole 12 of the sewage outflow pipe 14 at the bottom is made almost the same size as the sewage outflow pipe 14. It has been made. In addition, the bottom of the sewage inflow pipe 13 is
4 is higher than the bottom surface.

The tip of the sewage inflow pipe 13 is inserted into the insertion hole 11 of the sewage inflow pipe 13, and the odor preventing check valve 8 and the basket 9 are inserted into the tip of the sewage inflow pipe 13 as in the drainage basin G shown in FIG. Installed. The description of the deodorant check valve 8 and the basket 9 is omitted.

Next, the use state of the drainage basin H of the above embodiment will be described. Insert the end of the sewage inflow pipe 13 into the insertion hole 11 of the sewage inflow pipe 13 at the top of the drainage basin body 1 and insert the end of the sewage outflow pipe 14 into the insertion hole 12 of the sewage outflow pipe 14 at the bottom. At the tip end of the sewage inflow pipe 13, a deodorant check valve 8 and a basket 9 which can be opened and closed are attached in the same manner as the drainage basin G shown in FIG.

Then, the distal end of the sewage inflow pipe 13 is inserted into the drainage basin main body 1a, and the sewage inflow pipe 13 is provided with an openable and closable deodorant check valve 8 at the inlet.
When sewage flows into the drainage basin body 1a from above, the disc 82 opens by rotating upward around the hinge 81 axis by the flow of sewage, and rainwater flows from the sewage inflow pipe 13 into the drainage basin body 1a. When the inflow does not flow, the disc 82 is pressed by the presser spring 83 so that the disc 82 becomes substantially vertical, the disc 82 abuts on the inlet surface of the sewage inflow pipe 13, and the odor from the drainage basin main body 1 a to the sewage inflow pipe 13 is reduced. Backflow can be prevented.

Since the odor control check valve 8 is attached to the end face of the inlet of the sewage inflow pipe 13 inserted into the drainage basin main body 1a, an elbow or the like having a radius of curvature is used. The distance from the side wall of the drainage basin body 1a to the odor control check valve 8 attached to the inlet of the sewage inflow pipe 13 can be reduced as compared with the trap attached to the drainage basin H, and the drainage basin H can be made smaller. it can.

Since the basket body 9 which can receive sewage and trash etc. is provided below the entrance of the sewage inflow pipe 13, the sewage can be collected only by receiving the trash etc. flowing with the sewage from the sewage inflow pipe 13. Can be drained from the drainage pipe 14 of the drainage basin H.

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 4 shows another embodiment of the piping structure of the present invention. FIG.
FIG. 5B is an explanatory view seen from above, FIG. 5B is an explanatory view taken along line XX of FIG. 4A, FIG. 5C is an explanatory view taken along line YY of FIG. FIG. 4 is an enlarged explanatory view of a P portion of FIG.

The piping structure shown in FIG. 4 is different from the piping structure shown in FIG. 1 only in the mounting structure between the drainage basin K and the rainwater inflow pipe 7 and the following structure and operation. Except for the above, the structure, mounting method and operation are almost the same, so only this different point will be described, the names and numbers of the cages will be described using the same ones as in the embodiment, and the other description will be omitted.

As shown in FIG. 4, a short pipe 10 with a receiving port is attached to the upper side wall of the drainage basin main body 1a with the receiving port facing outward. The end face of the short pipe 10 with the port opposite to the port and the inner peripheral surface of the upper side wall of the drainage basin main body 1 are substantially flush with each other, and rainwater flows into the port installed outward. The pipe 7 is inserted, and the drainage basin body 1a and the rainwater inflow pipe 7
Is connected.

The openable and closable deodorant check valve 8a is a spacer 8
4a, a holding spring 83a, a hinge 81a, and a disk 82, and as shown in FIG. 5, a short pipe 10 mounting portion with an inlet on the inner peripheral surface of the upper side wall of the drainage basin main body 1a. A spacer 84a is attached in the vicinity, one side of an I-shaped hinge 81a with one end of the holding spring 83a is attached to the spacer 84a, and an I-shaped hinge to which the other end of the holding spring 83a is attached. A disc 82 is attached to the other side of the number 81a, and the disc 82 is brought into contact with the end face of the short pipe 10 having a port on the side opposite to the port.
a is attached to the inner peripheral surface of the upper side wall of the drainage basin main body 1a.

A cage 9 is attached to the inner peripheral surface of the upper side wall of the drainage basin body 1 near the mounting portion of the short pipe 10 with a receiving port, and rainwater and dust from the rainwater inflow pipe 7 are removed from the basket 9. The basket 9 receives the trash and the like, and the rainwater alone is combined with the sewage pipe of the drainage basin G and drained.

[0049]

According to the first aspect of the present invention, there is provided a piping structure for connecting a drainage basin having an opening for inspection at an upper portion and a connecting portion with a sewage pipe at a bottom portion, and a rainwater pipe, and comprising a drainage basin. A connection portion with a rainwater pipe is provided on the side wall of the main body, and an odor prevention check valve that can be opened and closed depending on whether rainwater flows in from the rainwater pipe is provided at an end of the connection section on the drainage basin side, so that a rainwater pipe is provided. When rainwater does not flow, by closing the rainwater pipe with the odor prevention check valve, there is no backflow of the odor generated from the rainwater pipe, and it is possible to prevent the odor from flowing from the rainwater pipe to each device.

Further, since an openable and closable deodorization check valve is attached to the end face of the rainwater pipe inlet inserted into the drainage basin, an elbow or the like having a radius of curvature is compared with a trap attached to the tip of the rainwater pipe. Therefore, the distance from the side wall of the drainage basin to the odor control check valve attached to the rainwater pipe inlet can be reduced, and the drainage basin can be downsized.

According to the second aspect of the present invention, there is provided a piping structure for connecting a drainage basin having an opening for inspection at an upper portion and a connecting portion with a sewage pipe at the bottom, and another sewage pipe. On the side wall of the basin body, a connection portion with the other sewage pipe is provided, and at the end of the connection portion on the drain basin side, the odor preventing check valve that can be opened and closed by the presence or absence of sewage from the other sewage pipe. When waste water does not flow from the waste water pipe,
By blocking the sewage pipe with the deodorization check valve, there is no backflow of odor generated from the drainage reservoir of the drainage basin, and the inflow of odor from the sewage pipe to each device can be prevented.

Also, since an openable and closable deodorization check valve is attached to the end surface of the sewage pipe inlet inserted into the drainage basin, a trap having an elbow or the like having a radius of curvature is attached to the end of the sewage pipe. In comparison with this, the distance from the inflow side wall of the drainage basin to the openable and closable deodorization check valve attached to the inlet of the sewage pipe can be reduced, and the drainage basin can be downsized.

According to the third aspect of the present invention, since the basket structure is provided below the odor control check valve in the piping structure according to the first and second aspects, the drainage pipe or the sewage pipe is not provided. By catching garbage and dirt and the like flowing with the drainage, only rainwater and wastewater can be drained to the drainage pipe and the drainage basin of the drainage basin and drained from the drainage pipe.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a piping structure of the present invention.
(A) is an explanatory view of the drainage basin with the lid removed and viewed from above,
(B) is an explanatory view taken along the line XX of (a), (c) is (a)
FIG. 5 is an explanatory view taken along line YY of FIG.

FIG. 2 shows another embodiment of the piping structure of the present invention.
(A) is an explanatory view of the drainage basin with the lid removed and viewed from above,
(B) is an explanatory view taken along the line XX of (a), (c) is (a)
FIG. 5 is an explanatory view taken along line YY of FIG.

FIG. 3 is an enlarged explanatory view of a portion B in FIG.

FIG. 4 shows another embodiment of the piping structure of the present invention.
(A) is an explanatory view of the drainage basin with the lid removed and viewed from above,
(B) is an explanatory view taken along the line XX of (a), (c) is (a)
FIG. 5 is an explanatory view taken along line YY of FIG.

FIG. 5 is an enlarged explanatory view of a P part of FIG.

[Explanation of symbols]

 G, H, K drainage basins 1, 1a, 1b drainage basin body 11 insertion hole for sewage inflow pipe 12 insertion hole for sewage outflow pipe 13 sewage inflow pipe 14 sewage outflow pipe 2, 2a lid 3, 3a 4 Insertion hole 5 Short pipe with socket 5a Short pipe with socket 6 Socket 6a Socket 7 Rainwater inflow pipe 8, 8a Openable and closable deodorant check valve 81, 81a Hinge 82, 82a Plate 83, 83a Holding spring 84, 84a Spacer 9 Cage body 10 Short pipe with socket

Claims (3)

[Claims] 1. A piping structure for connecting a drainage basin having an opening for inspection at an upper portion and a connection portion with a sewage pipe at a bottom portion, and a rainwater pipe, wherein a connection portion with a rainwater pipe is provided on a side wall of the drainage basin body. A piping structure, wherein a odor prevention check valve is provided at an end of the connection portion on the drainage basin side, the odor prevention check valve being openable and closable depending on whether rainwater flows in from the rainwater pipe. 2. A pipe structure for connecting a drainage basin having an opening for inspection at an upper portion and a connecting portion with a sewage pipe at a bottom portion, and another sewage pipe, wherein the side wall of the drainage basin main body is provided with the other A connection part with a sewage pipe is provided, and an odor prevention check valve which can be opened and closed by the presence or absence of inflow of sewage from the other sewage pipe is provided at an end of the connection part on a drainage basin side. And the piping structure. 3. The piping structure according to claim 1, wherein a basket body is provided below the deodorization check valve.