CN112127436A

CN112127436A - Check valve for public sewage pipeline

Info

Publication number: CN112127436A
Application number: CN202011079862.XA
Authority: CN
Inventors: 应国珍
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-11
Filing date: 2020-10-11
Publication date: 2020-12-25

Abstract

The invention provides a check valve for a public sewage pipeline, which is arranged at the joint of a main sewage discharge pipe and a sewage discharge unit and has the functions of observing the sewage discharge pipeline, serving as an access hole, preventing sewage from reversely returning and being smooth and free of blocking. The check valve for the public sewage pipeline is characterized in that: the non-return dredging valve is arranged at the joint of the sewage main pipe and the sewage discharging unit, a dredging pipe in the non-return dredging valve is arranged behind the branch port of the sewage main pipe, a dredging pipe cover is exposed on the ground of the sewage discharging unit, and after the dredging pipe cover is removed, a dredging rod can enter the sewage main pipe from the dredging pipe to dredge.

Description

Check valve for public sewage pipeline

Technical Field

The invention relates to a check valve for a sewage pipeline.

Background

In real life, people often encounter the problem of blockage of a sewage pipeline of an office building, particularly, the excrement pipeline is easy to block, the reason for blocking the sewage pipeline is many, but people are mainly careless in daily life, garbage such as sundries, hair and excrement paper falls into sanitary facilities, the garbage is clamped at the joint of the pipeline and is slowly accumulated, the garbage is attached to the wall of the pipeline to enable the pipeline to be gradually thinned, the pipeline and other substances are subjected to chemical reaction and are also gradually thinned, and finally the sewage pipeline is blocked.

Slight blockage of the sewage discharge pipeline can be dredged by using a dredging machine, if the blockage is serious, the blockage can occur after the blockage is just dredged, the vicious circle of the blockage and the blockage is realized, and only a new pipeline can be replaced when the blockage is completely solved.

Every sewage discharging unit of public sewage pipes of office buildings has a plurality of sewage discharging inlets, the sewage discharging amount is large, the sewage discharging unit at the lower layer directly suffers from the blockage of the sewage discharging pipes, the sewage of the whole building flows backwards, and the later result can be known.

In each sewage discharge unit of a practical office building, a sewage discharge pipeline is arranged at the top of the next floor, although access holes are distributed in the sewage discharge pipeline, people generally shield the sewage discharge pipeline for beauty when decorating, so that a plurality of difficulties are brought to daily inspection and dredging, and finally the sewage discharge pipeline is extremely easy to be blocked.

Therefore, we also need to develop a control device for a sewage pipeline to meet the needs of people.

Disclosure of Invention

In view of the above situation, the invention provides a check valve for a public sewage pipeline, which is arranged at the joint of a main sewage pipe and a sewage discharge unit, and has the functions of observing the sewage pipeline, serving as an access hole, preventing sewage from reversely returning, and being smooth and free of blocking.

The invention is realized by the following steps: the check valve for the public sewage pipeline is characterized in that: the non-return dredging valve is arranged at the joint of the sewage main pipe and the sewage discharging unit, a dredging pipe in the non-return dredging valve is arranged behind a branch port of the sewage main pipe, a dredging pipe cover is exposed on the ground of the sewage discharging unit, and after the dredging pipe cover is taken off, a dredging rod can enter the sewage main pipe from the dredging pipe to dredge;

the front end of the valve body of the non-return dredging valve is provided with a dredging pipe, and a dredging pipe cover is arranged at the inlet of the dredging pipe; a flow dividing column is arranged in the rear end of the valve body, a left check valve is arranged on the left side in the valve body behind the flow dividing column, and a right check valve is arranged on the right side in the valve body behind the flow dividing column in the valve, so that reverse return of sewage is prevented; the left check valve, the right check valve and the valve body are connected by a page turning type bent shaft, and a valve limiting block is arranged behind the left check valve and the right check valve;

and in the sewage discharge unit, each sewage discharge inlet pipe is connected with the sewage discharge branch pipe and then connected to the rear end of the non-return dredging valve, and the front end of the non-return dredging valve is connected with the branch port of the sewage discharge main pipe.

A transparent observation window is arranged in the dredging pipe cover.

The left check valve, the right check valve and the valve body can also be connected by hinges.

The invention has the following functions:

the dredging pipe cover of the non-return dredging valve is exposed on the ground of the sewage discharge unit, people can observe the water level condition of sewage in the sewage discharge pipeline and the smoothness degree of the sewage at any time through the transparent observation window in the dredging pipe cover, find out the unsmooth circulation phenomenon of the sewage discharge pipeline in time, and conduct dredging when the sewage discharge pipeline is not completely blocked.

The dredging pipe cover of the non-return dredging valve is exposed on the ground of the sewage discharging unit, when people find that the sewage discharging pipe is blocked, the blocking position of the sewage discharging pipe can be judged by observing the water level condition of sewage in the sewage discharging pipe of each floor, then after the dredging pipe cover is opened, a dredging rod can enter the sewage discharging main pipe from the dredging pipe for dredging, and the problem that the daily inspection and the dredging are difficult is solved.

When the sewage main pipe is blocked, sewage of the high-layer sewage discharging unit can reversely return (namely flow backwards) to the low-layer sewage discharging unit, when the sewage flows backwards, the left check valve and the right check valve in the check dredging valve rotate under the action of reverse water flow, and when the sewage flows backwards, the sewage discharging unit is automatically closed, so that the sewage does not flow backwards any more. Thus, the sewage discharging unit in the previous layer, such as backflow, can be automatically closed until the sewage discharging unit which is not in the backflow state is reached.

And fourthly, after the blocked main sewage discharge pipe is dredged, the upper sewage discharge unit is earliest unblocked, the sewage level of the main sewage discharge pipe is lowered, and the left check door and the right check door in the check dredging valve are automatically opened under the action of sewage water flow in the main sewage discharge unit, so that accumulated sewage is discharged. Thus, the sewage discharge units on the lower layer are gradually pushed to be smooth, and all the accumulated sewage is discharged.

Fifthly, the left check door and the right check door in the check dredging valve are vertical hinged and winding shaft type doors, the left check door and the right check door tend to be in a normally open state in daily life, sewage discharge is not hindered, dirt cannot be accumulated nearby the valve to avoid closing failure, and meanwhile, due to the winding shaft type door hinge structure, the valve cannot be closed failure due to dirt of the sewage.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Figure 1 is a schematic view of a public sewer line check valve of the present invention.

Figure 2 is a schematic view of a check valve in the public sewer line check valve of the present invention.

3 FIG. 33 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 of 3 a 3 check 3 valve 3 A 3- 3 A 3 of 3 the 3 public 3 sewer 3 line 3 check 3 valve 3 of 3 the 3 present 3 invention 3. 3

FIG. 4 is a schematic cross-sectional view of a check valve B-B of the public sewer line check valve of the present invention.

In the figure: 1. the sewage treatment system comprises a sewage discharge pipe, 2 sewage discharge branch pipes, 3 check dredging valves, 4 sewage discharge main pipes, 31 dredging pipe cover exposure, 32 dredging pipes, 33 left check doors, 34 door limiting blocks, 35 page turning type bent shafts, 36 right check doors and 33 diversion columns.

Detailed Description

As shown in the figure, the non-return dredging valve 3 is arranged at the joint of the sewage main pipe 4 and the sewage discharging unit, the dredging pipe 32 in the non-return dredging valve 3 is arranged behind the branch opening of the sewage main pipe 4, namely, at the position close to the tee joint, the dredging pipe cover exposure 31 is arranged on the dredging pipe 32, the dredging pipe cover 31 is exposed on the ground of the sewage discharging unit, and the transparent observation window is arranged in the dredging pipe cover 31, so that the sewage water level condition of the sewage discharging pipeline and the smoothness degree of sewage can be observed; after the dredging pipe cover 31 is removed, the dredging rod can enter the sewage main pipe 4 from the dredging pipe 32 for direct dredging.

A dredging pipe 32 is arranged at the front end of a valve body in the non-return dredging valve 3, and a dredging pipe cover 31 is arranged at the inlet of the dredging pipe 32; a flow dividing column 37 is arranged in the rear end of the valve body, a left check valve 33 is arranged on the left side in the valve body behind the flow dividing column 37, and a right check valve 36 is arranged on the right side in the valve body behind the flow dividing column 37 in the valve body, so that reverse return of sewage is prevented together; the left check valve 33, the right check valve 36 and the valve body are connected by a page turning type bent shaft 35 and serve as hinges of the left check valve 33 and the right check valve 36, of course, the left check valve 33, the right check valve 36 and the valve body can also be directly connected by the hinges, and a valve limiting block 34 is arranged behind the left check valve 33 and the right check valve 36.

Each sewage discharging inlet pipe 1 in the sewage discharging unit is connected with a sewage discharging branch pipe 2 and then is connected with the rear end of a non-return dredging valve 3, and the front end of the non-return dredging valve 3 is connected with a branch port of a sewage discharging main pipe 4.

The structure of the present invention is not limited to the form described in the embodiment, and further developments made by those skilled in the art according to the present invention fall within the protection scope of the present invention.

The check valve for the public sewage pipeline is suitable for being additionally installed and applied in the existing public sewage facilities, and the pipeline does not need to be modified.

Claims

1. The utility model provides a public sewage pipeline check valve which characterized by: the non-return dredging valve (3) is arranged at the joint of the sewage main pipe (4) and the sewage discharge unit, a dredging pipe (32) in the non-return dredging valve (3) is arranged behind the branch port of the sewage main pipe (4), a dredging pipe cover (31) is exposed on the ground of the sewage discharge unit, and after the dredging pipe cover (31) is taken down, a dredging rod can enter the sewage main pipe (4) from the dredging pipe (32) for dredging;

the front end of the valve body of the non-return dredging valve (3) is provided with a dredging pipe (32), and the inlet of the dredging pipe (32) is provided with a dredging pipe cover (31); a flow dividing column (37) is arranged in the rear end of the valve body, a left check valve (33) is arranged on the left side in the valve body behind the flow dividing column (37), and a right check valve (36) is arranged on the right side in the valve body behind the flow dividing column (37) in the valve, so that reverse return of sewage is prevented; the left check valve (33), the right check valve (36) and the valve body are connected by a page turning type bent shaft (35), and a door limiting block (34) is arranged behind the left check valve (33) and the right check valve (36);

in the sewage discharging unit, each sewage discharging inlet pipe (1) is connected with the sewage discharging branch pipe (2) and then is connected to the rear end of the non-return dredging valve (3), and the front end of the non-return dredging valve (3) is connected with the branch port of the sewage discharging main pipe (4).

2. The public sewer line check valve of claim 1, wherein: a transparent observation window is arranged in the dredging pipe cover (31).

3. The public sewer line check valve of claim 1, wherein: the left check valve (33), the right check valve (36) and the valve body can also be connected by hinges.