JPH0526145Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention a. Industrial application field This invention relates to a manhole that is sanitary and has a trapping action.

b Conventional technology and its problems Conventional concrete manholes are cylindrical and the bottom part is hardened with concrete on site, which tends to cause cracks, and the drainage part is also made of different materials, concrete and PVC pipe, so it cannot be completely sealed. This results in the following results:

(1) A PVC pipe came off from a concrete manhole.
The sewage will flow out, contaminating the underground and groundwater.

(2) The lower part of the manhole becomes soft due to the leaked sewage, and with the added weight of the concrete manhole, it becomes unstable and tilts.

(3) If the lower part leaks, there will be no standing water inside the manhole, and the manhole will no longer function as a trap (odor blocker), causing odors to flow back into the room, making it impossible to live comfortably.

(4) Manhole covers are also made of concrete and are not airtight, allowing muddy water from the ground to enter inside the manhole and clog the water pipes.

(5) Since there is no airtightness during the winter, a large amount of cold air from outside may enter, causing the inside of the manhole to freeze.

B. Structure of the invention a Means for solving the problem The present application attempts to solve the above-mentioned problem with the following structure.

That is, in the present invention, the manhole body is made of a synthetic resin such as PVC and has a cylindrical side wall connected to the bottom, and the side wall has a sewage outlet with a screw-in socket positioned upward. In addition, a sewage inlet is provided at the lower position, a hook-shaped stabilizing frame is provided on the outer periphery of the lower part of the manhole body, and a manhole cover with an air vent is screwed into the upper opening of the manhole body. This is a manhole that is fitted in a built-in manner.

In this case, the side wall may be formed into a cylindrical shape, divided into upper and lower parts, and these parts may be assembled and disassembled by threaded portions.

b Example of implementation of the idea 1 is the proposed manhole.

Reference numeral 2 designates a manhole body made of synthetic resin such as vinyl chloride and having a cylindrical side wall 2B connected to a bottom portion 2A.

A sewage outlet 3 having a screw-in type socket 3A is disposed at an upper position on this side wall, and a sewage inlet 4 is disposed at a lower position.

In addition, on the lower outer periphery of this manhole body 2,
A hook-shaped stable frame 4A is provided.

Furthermore, a manhole cover 5 having a small hole-shaped air vent 5A is screwed into the upper opening of the manhole body 2.

In addition, although the sewage inlet and the sewage outlet are provided at four locations in the illustrated example, the present invention is not limited to this.

Reference numeral 6 designates an upper lid that is removably screwed into the sewage outflow port as required, and 7 represents a lower lid that is adhesively fixed to the sewage inflow port as required.

Further, the stable frame 4A is configured as a truncated conical tube,
The bottom of the manhole body is fitted and fixed into the top opening of this cylinder from above.

4B is a reinforcing member attached between the outer circumferential surface of the manhole body and the outer circumferential surface of the stabilizing frame.

Furthermore, the side wall 2B may have a cylindrical shape, a rectangular tube shape, or a polygonal shape.

The above explanation was based on the case where the manhole main body is integrated, but the cylindrical side wall part is divided into an upper part 2C and a lower part 2D, and the lower end threaded part 2E of the upper part and the upper end threaded part 2F of the lower part are screwed together. Can be integrated.

Separating into the upper part and the lower part in this way is convenient for storage and transportation.

This kind of assembly type can be freely adjusted in height and used depending on the purpose.

Further, it is preferable to form irregularities on the surface of the manhole cover, which serve both as a decoration and as a non-slip surface.

Further, since the air vents 5A are provided as a pair of left and right, they can be used by locking the handle when opening and closing the manhole cover.

c How to use: Install the product of this application at the desired location, and open the inlet 4.
A pipe 9 from the kitchen is glued to the outlet 3, and a pipe 10 to a drainage ditch or the like is screwed and connected to the outlet 3.

C. Effects of the invention a: Since synthetic resin such as PVC is used as the material, it is lightweight, and the stabilizing frame at the bottom can be buried in concrete to stabilize the manhole itself.

As a result, it is integrated with the foundation concrete,
Safe, easy and reliable installation.

b Since the manhole cover is configured as a screw-in type,
It can prevent the intrusion of muddy water, etc. on the ground.

In addition, the air vent has been made small in the form of a small hole, so
It never freezes even in winter.

c. There are several sewage inlets, so piping work can be done to suit the terrain.

d Drain caps can be used for different purposes, such as external, internal threaded or adhesive caps.

e) Pollutants can be recycled and used, there is no odor even after long-term use, there are no cracks, it is hygienic, and the joints do not come off, so it functions as a complete trap.

[Brief explanation of drawings]

FIG. 1 is a front view, FIG. 2 is a longitudinal sectional view, and FIG. 3 is an enlarged sectional view of a main part showing another embodiment. 1... Manhole, 2... Manhole body, 3
... Sewage outlet, 4... Sewage inlet, 5... Manhole cover.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A manhole body made of synthetic resin such as PVC and having a continuous cylindrical side wall at the bottom, the side wall of which has a screw-in socket located upwards. A sewage outflow port and a sewage inflow port are provided at a lower position, and a hook-shaped stabilizing frame is provided at the lower outer periphery of the manhole body,
A manhole characterized in that a manhole cover having an air vent is screwed into the upper opening of the manhole body. (2) The side wall is configured in a cylindrical shape, and
The manhole according to claim (1) of the utility model registration, which is divided into upper and lower parts, and these parts are configured to be assembled and disassembled freely by threaded parts.