JPH0332617Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a plug for a public drainage basin, and is used to connect an unused drainage main pipe to a public drainage basin after plumbing work has been carried out after the construction of a residential area. The present invention relates to a structure that prevents rainwater, etc. from flowing in from the ground.

(Prior art) In the conventional construction of a drainage pipe system, a drainage main pipe is laid after the construction of a residential area, an attachment pipe is branched from this drainage main pipe, and this attachment pipe 2 is connected to a public drainage basin 1 as shown in Fig. 4. After the drainage equipment from each household is completed, the drain pipe 3 from each household is connected to this public drainage basin 1.

(Problem to be solved by the invention) In the above-mentioned drainage pipe system, after installation, public drainage basin 1 is not used until a building is erected and it is used. Because of the opening, rainwater flowing in through gaps in the cover of the public drainage basin 1 flows into the main drainage pipe via the attached pipe 2, resulting in an increase in the amount of water to be treated at the sewage treatment plant.

In view of the above-mentioned problems, the present invention attempts to provide a plug for a drainage basin that prevents rainwater from a public drainage basin from flowing into an unused drainage main pipe.

[Structure of the idea]

(Means for Solving the Problems) The present invention consists of an insertion pipe section that is inserted into a mounting pipe that is opened to communicate with one side of the lower part of the drainage basin, and a bottom cover section that is integrally formed on the outer end of the insertion pipe section. and a handle portion formed on the outer surface of the bottom lid portion, a stopper portion protruding outward from a part of the periphery of the bottom lid portion, and an annular fitting recess formed on the outer periphery of the insertion tube portion. The present invention is characterized by comprising a plug main body having a main body, and an annular elastic sealing material that is fitted into the fitting recess of the stopper main body and internally inserted into the attachment tube.

(Function) By fitting the plug body fitted with an elastic sealing material to the attachment pipe opened on one side of the lower part of the public drainage basin, the public drainage basin is blocked and rainwater, etc., does not flow into the unused main drainage pipe. Prevented.

(Example) An example of the present invention will be described with reference to FIGS. 1 to 3.

4 is a plug body made of vinyl chloride resin, and an insertion tube part 5
A bottom cover part 7 is formed integrally with the outer end of the insertion tube part 5 and has a peripheral edge part 6 projecting outward in the form of a flange, and a flat U-shape is formed to protrude in the diametrical direction of the outer surface of the bottom cover part 7. A stopper part 9 is formed on a part of the outer periphery of the bottom lid part 7 and protrudes outward in the form of a flange through an outwardly protruding step part. An annular fitting recess 12 is formed at the inner end by a pair of annular protrusions 10 and 11 formed with a small interval between them.
An annular engagement protrusion 13 is formed at the bottom of 2. In addition, the insertion tube portion 5 is formed to be expanded so that the opening side has a slightly larger diameter than the bottom cover 7 side, and a reinforcing protrusion 18 is provided between the outer periphery protrusion 11 and the peripheral edge 6 of the bottom cover 7.
is formed. Furthermore, reinforcing ribs 29 are formed on the inner surface of the bottom cover portion 7.

Reference numeral 14 denotes an annular sealing material made of an elastic material such as rubber, which is formed on the inner surface of the annular band portion 15 to be fitted into the fitting recess 12 of the plug body 4 and is engaged with the plug body 4. It is composed of an annular recess 16 that is fitted into the mating projection 13, and an annular tongue piece 17 that projects rearward from the outer peripheral tip of the annular band portion 15 in a tongue-like shape.

Next, the operation of the above embodiment will be explained.

In FIG. 3, reference numeral 19 denotes a public drainage basin, and the base end of a mounting pipe 22 whose periphery is sealed with a sealing material 21 such as mortar or adhesive is connected to an opening 20 on one side of the lower part. The attachment pipe 22 consists of a drain pipe 23 and freely bendable pipes 24 and 25, and a main drain pipe 26 is connected to the tip. Then, when the plug main body 4 is fitted into the opening 27 of the attachment pipe 22 that opens into the public drainage basin 19, the protrusion 10 protruding from the outer periphery of the insertion pipe part 5,
11, 18, the peripheral edge part 6 is inserted and fitted into the opening part 27, and the elastic sealing material 14 comes into close contact with the inner wall of the opening part 27 to block water intrusion, and the opening edge of the attachment pipe 22 has a plug body 4 attached thereto. The stopper portion 9 is engaged and the stopper body 4 is locked to the open end of the attachment pipe 22.

In this way, the opening 27 of the attachment pipe 22 is sealed, and even if rainwater or the like intrudes into the unused public drainage basin 19, rainwater will not flow from the attachment pipe 22 into the drain main pipe 26 side.

In addition, when waste water starts to flow into the public drainage basin 19 from the domestic drain pipe 28, the waste water can be guided to the main drain pipe 26 by grasping the handle 8 and pulling out the stopper body 4 from the mounting pipe 22. I can do it.

[Effect of idea]

According to the present invention, it is possible to prevent rainwater, etc. from flowing into the drainage main from an unused drainage basin by fitting the stopper body into a mounting pipe that opens in the drainage basin and is connected to the drainage main. can.

[Brief explanation of the drawing]

Fig. 1 is a vertical side view of a stopper showing an embodiment of the present invention, Fig. 2 is a front view of the same as above, Fig. 3 is a side view showing the state of attachment to the above installation pipe, Fig. 4 is a conventional drainage system. It is a vertical side view of a square. 4...Bung body, 5...Insertion tube part, 7...Bottom cover part, 8...Handle part, 9...Stopper part, 12...
...Fitting recess, 14...Elastic sealing material, 19...Drainage basin, 22...Mounting pipe.

Claims (1)

[Scope of utility model registration request] An insertion pipe part that is inserted into a mounting pipe that has a communication opening on one side of the lower part of the drainage basin, a bottom cover part that is integrally formed on the outer end of this insertion pipe part, and a handle part that is formed on the outer surface of this bottom cover part. A stopper body includes a stopper portion projecting outward from a part of the periphery of the bottom lid portion, and an annular fitting recess formed on the outer periphery of the insertion tube portion; A plug for a drainage basin, characterized in that it comprises an annular elastic sealing material that is fitted into the mating recess and internally fitted into the mounting pipe.