CN213926608U

CN213926608U - Improved type intercepting overflow system for rainwater and sewage mixed flow pipe network

Info

Publication number: CN213926608U
Application number: CN202022406406.3U
Authority: CN
Inventors: 宁军; 田琳; 牧运洋
Original assignee: Anhui Shuiyun Environmental Protection Co ltd
Current assignee: Anhui Shuiyun Environmental Protection Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-08-10
Anticipated expiration: 2030-10-26

Abstract

The utility model relates to an improvement type overflow system that dams for dirty mixed flow pipe network of rain, including the vatch basin, the vatch basin include well lid, inspection shaft section, inspection well room, underlying surface foundation structure, dirty mixed flow pipeline of rain and rainwater well flow direction pipeline, the inspection well room in set up dirty separation pipeline structure of rain, dirty separation pipeline structure of rain include that the sewage collection ditch connects the little pipe diameter of sewage collection ditch and cuts dirty pipeline, reducing pipe, big pipe diameter and cut dirty pipeline, big pipe diameter cut dirty pipeline and bilge well and be connected, rainwater well flow direction pipeline be connected with rainwater well. The utility model discloses can confirm the specific pipe diameter of tubule footpath intercepting sewage pipe according to the interior sewage flow of dirty mixed flow pipe of rain when fine, the initial stage rainwater can all be dammed when sewage and the rain when guaranteeing fine. According to the bottom elevation of the rainwater and sewage mixed flow pipe at the upstream and downstream sections of the intercepting well, the reasonable sewage collecting ditch bottom elevation is arranged, and the rainwater at the initial stage can be effectively intercepted to the sewage intercepting pipeline in fine days and rainy days.

Description

Improved type intercepting overflow system for rainwater and sewage mixed flow pipe network

Technical Field

The utility model belongs to the technical field of municipal drainage, environmental protection technique and specifically relates to an improvement type overflow system that dams for dirty mixed flow pipe network of rain is related to.

Background

At present, traditional rain sewage system drainage system is collected the back with municipal sewage through the sewage pipe network, carries to the sewage factory and carries out centralized processing, in handling retrieval and utilization or the emission to the natural water after reaching standard, the rainwater discharges into the natural water in the near after the rainwater pipe network is collected, a lot of vatch basin in current drainage system can not effectively damps initial stage rainwater, initial stage rainwater generally is that the earth's surface erodees the rainwater, the inside has more pollutant in addition, if directly discharge to the natural water in, can cause the pollution to the water. In recent years, in the development process of municipal pipe networks in China, a rainwater and sewage flow system drainage system is adopted, but due to the lack of scientific guidance methods, the lack of supervision of pipe networks and other reasons, pipe networks are connected in a mixed mode, in a misconnection mode and the like to different degrees in actual life. In life, sewage exists in a plurality of rainwater pipes in sunny days, and rainwater mixed with a large amount of sewage overflows into a river channel when raining and is directly discharged into a receiving water body at the downstream.

1. In the existing intercepting technology, a traditional intercepting well needs to be built at the tail end of a rain and sewage mixed flow pipeline, and a sewage pump is needed to lift sewage and initial rainwater to the sewage well, so that the investment cost and the operation and maintenance cost are high.

2. The existing interception technology can cause a large amount of rainwater to be drained into a sewage pipe network in rainy days, so that the drainage pressure of the sewage pipe network is increased, the sewage concentration is reduced, and the normal operation of subsequent sewage treatment facilities is influenced.

3. When the sewage quantity is large in the existing interception technology, the sewage flows back to a rainwater well, and the pollution degree of a receiving water body is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an improved interception overflow system for a rain and sewage mixed flow pipe network; the structure does not need to use a lifting pump, reduces the cost and does not need operation and maintenance. Compared with the traditional intercepting well, the improved intercepting well can reduce the rainwater amount flowing into the sewage well by 70% in rainy days.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an improvement type overflow system that dams for dirty mixed flow pipe network of rain, includes the vatch basin structure, the vatch basin structure include well lid, inspection shaft section, inspection shaft room and underlying surface infrastructure, underlying surface infrastructure upper portion inspection shaft section in connect dirty mixed flow pipeline of rain and water well flow direction pipeline, the inspection shaft room in set up dirty separation pipeline structure of rain, dirty separation pipeline structure of rain include that sewage collects the ditch and connect the little pipe diameter of sewage collection ditch and intercept dirty pipeline, reducing pipe, big pipe diameter and intercept dirty pipeline, big pipe diameter intercept dirty pipeline and sewage well and be connected, rain well flow direction pipeline be connected with the rain well.

The foundation structure of the lower cushion surface comprises a concrete bottom plate block, a broken stone cushion layer and a plain soil tamping layer.

The wall of the inspection shaft section adopts a bricking structure; the lower section is in a straight cylinder shape, and the upper section is in a closing shape.

The utility model has the advantages that: 1. according to the sewage flow in the rain and sewage mixed flow pipe in a sunny day, the specific pipe diameter of the small-pipe-diameter sewage interception pipe is determined, and the fact that the sewage in the sunny day and the initial rainwater in the rainy day can be completely intercepted is guaranteed.

2. According to the bottom elevation of the rainwater and sewage mixed flow pipe at the upstream and downstream sections of the intercepting well, the reasonable sewage collecting ditch bottom elevation is arranged, and the rainwater at the initial stage can be effectively intercepted to the sewage intercepting pipeline in fine days and rainy days.

3. The sewage intercepting pipeline penetrates through the well wall section and adopts a small-diameter pipeline, so that sewage can be enabled to completely flow into the sewage well in sunny days, a large amount of sewage can be prevented from flowing back to the intercepting well when the water level of the sewage well is too high, and a large amount of rainwater can be prevented from entering the sewage well in rainy days.

4. The back section of the sewage interception pipeline penetrating through the well wall adopts a large-diameter pipeline, but the large-diameter pipeline, the rain and sewage mixed flow pipe and the small-diameter sewage interception pipe form a jet flow state similar to a Venturi principle so as to prevent impurities in sewage from blocking the small-diameter sewage interception pipe.

5. Compared with the traditional intercepting well, the improved intercepting well can reduce the rainwater amount flowing into the sewage well by 70% in rainy days.

6. The method is simple, efficient in interception, low in cost and free of later operation and maintenance.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a plan view of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a sectional view B-B of fig. 1.

In the figure: 1. the system comprises a well cover, 2, an inspection shaft section, 3, an inspection shaft chamber, 4, a rain and sewage mixed flow pipeline, 5, a rainwater well flow direction pipeline, 6, a sewage collecting pipe, 7, a small-diameter sewage intercepting pipeline, 8, a reducer pipe, 9, a large-diameter sewage intercepting pipeline, 10, a sewage well, 11, a rainwater well, 12, a concrete bottom plate, 13, a gravel cushion, 14, a plain soil tamping layer and 15, a sewage collecting ditch.

Detailed Description

The terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like in the specification indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Embodiment 1, as shown in fig. 1 to 3, an improved intercepting overflow system for a mixed rain and sewage pipe network comprises an intercepting well structure, wherein the intercepting well structure comprises a well cover 1, an inspection shaft section 2, an inspection chamber 3, a sewage collecting channel 15 and a bedding foundation structure, a mixed rain and sewage pipe 4 and a rainwater well flow direction pipe 5 are connected to the upper inspection shaft section of the bedding foundation structure, a rain and sewage separation pipeline structure is arranged in the inspection chamber 3, the rain and sewage separation pipeline structure comprises a sewage collecting pipe 6, a small-diameter intercepting pipeline 7, a reducer pipe 8 and a large-diameter intercepting pipeline 9, the large-diameter intercepting pipeline 9 is connected to a sewage well 10, and the rainwater well flow direction pipe 5 is connected to a rainwater well 11.

The underlying surface foundation structure comprises a concrete bottom plate block 12, a gravel cushion layer 13 and a plain soil tamping layer 14.

The small-caliber sewage intercepting pipeline 7 is a small caliber of DN50, the middle part is a reducer 8DN50/100, and the large-caliber sewage intercepting pipeline 9 at the rear section is a large caliber of DN 100. The front-section small-pipe-diameter sewage intercepting pipe can ensure that sewage can completely flow into the sewage well in sunny days, can prevent a large amount of sewage from flowing back to the intercepting well when the water level of the sewage well is too high, and can prevent a large amount of rainwater from entering the sewage well in rainy days. The rear-section large-pipe-diameter sewage interception pipe, the rain and sewage mixed flow pipe and the small-pipe-diameter sewage interception pipe form a jet flow state similar to a Venturi principle so as to prevent impurities in sewage from blocking the small-pipe-diameter sewage interception pipe.

The inspection well chamber is divided into a rainwater and sewage mixed flow water inlet pipe 4, a sewage collecting ditch 15, a reducing sewage intercepting pipe 8, a sewage well 10 and a rainwater well 11. The lowest layer of the bottom of the inspection well is tamped with plain soil 14, then a broken stone cushion layer 13, then the upper layer is a concrete bottom plate block 12, a sewage collecting ditch at the bottom of the inspection well is of a concrete structure, the well wall part of the inspection shaft section 2 adopts a brick structure, the lower section is a straight cylinder, the caliber of the upper section shrinks (called as a closing section), and the inspection shaft section 2 adopts cement mortar to smear inside and outside.

When the elevation of the bottom of the trough of the original rain and sewage mixed flow pipeline is +/-0.00 as a base line, only sewage enters the original rain and sewage mixed flow pipeline in sunny days, then enters the sewage collecting channel, the elevation of the bottom of the trough is-0.07, and the water flow direction is controlled according to the elevation of the bottom of the trough. When only sewage flows through the rain and sewage mixed flow pipeline in fine days, the sewage flows to the sewage intercepting pipeline on the left side through the sewage collecting ditch due to the small amount of the sewage, and then enters the sewage well. The sewage pipe belongs to a reducing pipeline, the front section of the sewage pipe is a small pipe diameter of DN50, the middle section of the sewage pipe is a reducing pipe DN50/100, and the rear section of the sewage pipe is a large pipe diameter of DN 100. The front-section small-pipe-diameter sewage intercepting pipe can ensure that sewage can completely flow into the sewage well in sunny days, can prevent a large amount of sewage from flowing back to the intercepting well when the water level of the sewage well is too high, and can prevent a large amount of rainwater from entering the sewage well in rainy days. The rear-section large-pipe-diameter sewage interception pipe, the rain and sewage mixed flow pipe and the small-pipe-diameter sewage interception pipe form a jet flow state similar to a Venturi principle so as to prevent impurities in sewage from blocking the small-pipe-diameter sewage interception pipe.

When the elevation of the bottom of a flow groove of an original rain and sewage mixed flow pipeline is +/-0.00 as a base line, rainwater and sewage are mixed to enter the original rain and sewage combined flow pipeline in rainy days, initial rainwater and sewage still pass through a sewage collecting ditch to flow to a sewage intercepting pipeline on the left side, and then enter a sewage well; but the rainwater quantity is gradually increased, later stage rainwater and sewage can directly overflow the sewage collecting ditch, and directly enter a large-diameter rainwater pipe (the elevation of the pipe bottom is-0.01 to-0.02, and can be properly adjusted according to the water flow line in the well) after mixed flow, and then a rainwater well enters water.

The following effects are obtained after the structure mode is used:

1. according to the sewage flow in the rain and sewage mixed flow pipe in a sunny day, the specific pipe diameter of the small-pipe-diameter sewage interception pipe is determined, and the fact that the sewage in the sunny day and the initial rainwater in the rainy day can be completely intercepted is guaranteed.

The above embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims

1. The utility model provides an improvement type overflow system that dams for dirty mixed flow pipe network of rain, includes vatch basin, its characterized in that: the vatch basin structure include well lid, inspection shaft section, inspection shaft room and underlying surface foundation structure, underlying surface foundation structure upper portion inspection shaft section in connect rain and sewage mixed flow pipeline and rainwater well flow direction pipeline, inspection shaft room bottom and underlying surface foundation structure between be equipped with sewage and collect the ditch, collect ditch upper portion at sewage and be equipped with rain and sewage separation pipeline structure, the big pipe diameter cuts dirty pipeline and is connected with the bilge well, rainwater well flow direction pipeline be connected with the rainwater well.

2. An improved intercepting overflow system for a mixed flow rain and sewage pipe network as claimed in claim 1, wherein: the rain and sewage separating pipeline structure comprises a sewage collecting ditch, a small-diameter sewage intercepting pipeline, a reducing pipe and a large-diameter sewage intercepting pipeline, wherein the sewage collecting ditch is connected with the sewage collecting ditch.

3. An improved intercepting overflow system for a mixed flow rain and sewage pipe network as claimed in claim 1, wherein: the foundation structure of the lower cushion surface comprises a concrete bottom plate block, a broken stone cushion layer and a plain soil tamping layer.

4. An improved intercepting overflow system for a mixed flow rain and sewage pipe network as claimed in claim 1, wherein: the wall of the inspection shaft section adopts a bricking structure; the lower section is in a straight cylinder shape, and the upper section is in a closing shape.