CN212271175U

CN212271175U - Unpowered sewage interception and backflow prevention system

Info

Publication number: CN212271175U
Application number: CN202021931568.2U
Authority: CN
Inventors: 陈希凡; 李勇
Original assignee: Zhonglin Hi Tech Anhui Co ltd
Current assignee: Zhonglin Hi Tech Anhui Co ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-01-01
Anticipated expiration: 2030-09-07

Abstract

The utility model discloses an unpowered sewage interception and backflow prevention system, which comprises a sewage well, a flood discharge outlet and a sewage interception outlet which are arranged in the sewage well, wherein the vertical height of the sewage interception outlet in the sewage well is lower than that of the flood discharge outlet; the unpowered stop valve is composed of a drum-shaped tank body, a water inlet pipe fixedly arranged on the side wall of the tank body and communicated with the inner cavity of the tank body, and an air inlet pipe assembly and a water outlet pipe which are respectively arranged at the upper end and the lower end of the tank body, wherein the water inlet pipe is tangent to the tank body. The system has the advantages of simple equipment, no need of peripheral driving force, capability of avoiding impact on a treatment plant caused by a large amount of rainwater and sewage mixed water flowing into a sewage treatment pipe network through unpowered stop valve flow limiting, compact overall structure, low failure rate, strong practicability, low cost and suitability for popularization and application.

Description

Unpowered sewage interception and backflow prevention system

Technical Field

The utility model belongs to the technical field of sewage treatment device, concretely relates to unpowered cuts dirty, prevents flowing backward system.

Background

In the current domestic sewage pipe network combined system drainage system, the interception technology of China engineering construction standard CECS91:97 < Combined System Sewage intercepting well design Specification > is generally adopted for intercepting drought sewage and initial rainwater into a sewage pipeline, in the interception system, an intercepting well not only ensures that intercepted sewage enters an intercepting system to achieve the purpose of conditioning the environment, but also ensures that rainwater with flow exceeding the street flow does not enter the intercepting system in heavy rain so as to prevent the actual flow of a downstream intercepting pipeline from exceeding the designed flow and avoid the occurrence of sewage back-overflow and impact on a sewage treatment plant.

The sewage interception and backflow prevention system used at present is mostly started by adopting electric power, so that the workload of manual maintenance is large, the equipment needs to be replaced periodically, the overall investment is high, the failure rate is high, the overall equipment is not compact enough, and the design needs to be updated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an unpowered cuts dirty, prevents flowing backward system and comes into operation to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a unpowered sewage interception and backflow prevention system comprises a sewage well, a flood discharge port and a sewage interception discharge port, wherein the flood discharge port and the sewage interception discharge port are arranged in the sewage well, the vertical height of the sewage interception discharge port in the sewage well is lower than that of the flood discharge port, the other end of a pipeline communicated with the flood discharge port is connected with a duckbill valve, the sewage interception discharge port is communicated with a water inlet pipe of a unpowered interception valve, and a water outlet of the unpowered interception valve is communicated with a sewage treatment pipe network through a connecting pipe;

the unpowered stop valve is composed of a drum-shaped tank body, a water inlet pipe fixedly arranged on the side wall of the tank body and communicated with the inner cavity of the tank body, and an air inlet pipe assembly and a water outlet pipe which are respectively arranged at the upper end and the lower end of the tank body, wherein the water inlet pipe is tangent to the tank body.

Preferably, a trash holding chamber is arranged between the trash holding and draining port and the connecting pipe of the unpowered shutoff valve, and a trash holding grid is fixedly arranged at an opening communicated with the trash holding and draining port in the trash holding chamber.

Preferably, the trash rack is composed of an annular bracket and a net bag which is opened by the annular bracket, and the net bag is made of nylon ropes in a weaving mode.

The utility model discloses a technological effect and advantage: this unpowered sewage, prevent flowing backward system, through set up flood discharge outlet and cut sewage discharge outlet cooperation duckbill valve and unpowered stop valve in the bilge well, through cutting the sewage discharge outlet blowdown when having guaranteed sewage low water level in the bilge well, when sewage high water level, discharge flood through the flood discharge outlet, and through using this unpowered stop valve, simultaneously to the sewage that flows into sewage treatment plant dams, avoid a large amount of rainwater to enter into the sewage pipe network of processing plant, cause the impact to sewage treatment plant, whole equipment is compact, moreover, the steam generator is simple in structure, low in manufacturing cost, need not peripheral hardware power input, resources are saved, the fault rate is low, and durable, therefore, the clothes hanger is strong in practicability.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the arrangement of the flood discharge outlet and the sewage interception discharge outlet in the sewage well.

In the figure: 1. a bilge well; 2. a flood discharge outlet; 3. a sewage interception and drainage port; 4. a duckbill valve; 5. an unpowered shut-off valve; 51. a tank body; 52. a water inlet pipe; 53. an air inlet pipe; 54. a drain pipe;

6. a trash holding well chamber; 7. a trash rack; 71. a ring-shaped scaffold; 72. a net bag.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a system is prevented flowing backward by unpowered intercepting dirty, as shown in fig. 1-2, including the bilge well and set up flood discharge outlet 2 and intercepting drain outlet 3 in bilge well 1, and the vertical height of intercepting drain outlet 3 in bilge well 1 is less than flood discharge outlet 2, the other end of 2 intercommunication pipelines of flood discharge outlet is connected with duckbill valve 4, intercepting drain outlet 3 communicates with inlet tube 52 of unpowered intercepting valve 5, and the delivery port of unpowered intercepting valve 5 communicates with sewage treatment pipe network through the takeover;

in dry seasons, when the water inflow of the sewage well 1 is small, the water level in the sewage well 1 is low, and at the moment, sewage is discharged into a sewage treatment pipe network through a sewage interception and drainage port 3 and an unpowered intercepting valve 5 for sewage treatment;

in rainy season, when the water inflow of the sewage well 1 is small, the water level in the sewage well 1 is rapidly increased, the water level of the sewage flows through the flood discharge outlet 2, the sewage is conveyed to the duckbill valve 4, the duckbill valve 4 is extruded by water pressure to open and discharge water outwards to discharge the flood, and after the water level in the sewage well 1 is lower than the flood discharge outlet 2, the duckbill valve 4 is closed, river water is placed to flow backwards into the sewage well 1, the sewage in the sewage well 1 is conveyed into the unpowered stop valve 5 through the sewage stop outlet 3 continuously, the sewage discharge flow is stopped through the unpowered stop valve 5, and a large amount of rainwater is prevented from entering a sewage pipe network of a treatment plant to cause impact on the sewage treatment plant;

the unpowered cutoff valve 5 is composed of a drum-shaped tank 51, a water inlet pipe 52 fixedly arranged on the side wall of the tank 51 and communicated with the inner cavity of the tank 51, and an air inlet pipe 53 assembly and a water outlet pipe 54 which are respectively arranged at the upper end and the lower end of the tank 51, wherein the water inlet pipe 52 is tangent to the tank 51.

When sewage passes through the unpowered rainwater and sewage intercepting well, by utilizing the principle of fluid dynamics, the higher the water level in the sewage well 1 is along with the increase of rainfall, and by utilizing the increase of the water level, namely the increase of sewage potential energy, because the water inlet pipe 52 is tangent to the tank body 51, after the sewage enters the drum-shaped tank body 51 through the water inlet pipe 52, the sewage swirls along the inner wall of the tank body 51, the potential energy is immediately converted into kinetic energy, namely the sewage flow velocity is increased, when the sewage swirls along the inner wall of the tank body 51, a negative pressure is generated in the inner cavity in the middle of the tank body 51, external air enters the tank body 51 through the air inlet pipe 53 to form an air column, the water level rises along with the increase of the water level, the conversion amount of the sewage potential energy into the kinetic energy is larger, the flow velocity of swirling water in the tank body 51 is also continuously increased, when the speed of the swirling sewage on the inner wall, therefore, the water level rises along with the increase of the rainfall of the upstream water level, and the amount of the sewage discharged after passing through the intercepting well is kept stable.

A trash holding chamber 6 is arranged between the trash holding and draining port 3 and the connecting pipe of the unpowered shutoff valve 5, and a trash holding grid 7 is fixedly arranged at an opening in the trash holding chamber 6, which is communicated with the trash holding and draining port 3. Sundries in the sewage entering the unpowered intercepting valve 5 are intercepted through the trash rack 7, and the situation that the sundries are blocked by the unpowered intercepting valve 5 is avoided.

The trash rack 7 is composed of an annular support 71 and a net bag 72 with an opening opened by the annular support 71, and the net bag 72 is made of nylon ropes in a weaving mode. Low cost, the manufacturing of being convenient for, carry out interception and holding through the debris in the sewage through string bag 72, conveniently retrieve it, avoid debris accumulation in bilge well 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an unpowered cuts dirty, prevents flowing backward system, includes bilge well (1) and sets up flood discharge outlet (2) and cut dirty outlet (3) in bilge well (1), and cuts the vertical height of dirty outlet (3) in bilge well (1) and be less than flood discharge outlet (2), its characterized in that: the other end of the connecting pipeline of the flood discharge port (2) is connected with a duckbill valve (4), the sewage interception discharge port (3) is communicated with a water inlet pipe (52) of the unpowered shutoff valve (5), and a water outlet of the unpowered shutoff valve (5) is communicated with a sewage treatment pipe network through a connecting pipe;

the unpowered shutoff valve (5) is composed of a drum-shaped tank body (51), a water inlet pipe (52) fixedly arranged on the side wall of the tank body (51) and communicated with the inner cavity of the tank body (51), and an air inlet pipe (53) and a water outlet pipe (54) respectively arranged at the upper end and the lower end of the tank body (51), wherein the water inlet pipe (52) is tangent to the tank body (51).

2. The unpowered dirt intercepting and backflow preventing system according to claim 1, wherein: a trash blocking well chamber (6) is arranged between the trash blocking water outlet (3) and the connecting pipe of the unpowered shutoff valve (5), and a trash blocking grid (7) is fixedly arranged at an opening in the trash blocking well chamber (6) communicated with the trash blocking water outlet (3).

3. The unpowered dirt intercepting and backflow preventing system according to claim 2, wherein: the trash rack (7) is composed of an annular support (71) and a net bag (72) which is opened by the annular support (71), and the net bag (72) is made of nylon ropes in a weaving mode.