CN212641693U

CN212641693U - In-well barricade structure that adds of dirty intercepting is cut to drought

Info

Publication number: CN212641693U
Application number: CN202021096307.3U
Authority: CN
Inventors: 马建华; 徐臻炜; 叶敬强; 杨志华
Original assignee: Shanghai Chengjian Waterworks Engineering Co ltd
Current assignee: Shanghai Chengjian Waterworks Engineering Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-03-02
Anticipated expiration: 2030-06-15

Abstract

The utility model provides an it cuts dirty catch basin in and adds barricade structure to drought flow, it includes: the bottom of the intercepting well is provided with a cushion layer, the cushion layer is provided with a foundation, and a rainwater inlet pipe and a rainwater outlet pipe are arranged in the intercepting well; a sewage outlet pipe is also arranged in the intercepting well, a float valve is installed at the inlet of the sewage outlet pipe, the outlet height of the sewage outlet pipe is flush with the outlet height of the rainwater outlet pipe, and the inner diameter of the sewage outlet pipe is not more than that of the rainwater outlet pipe; an overflow retaining wall is arranged in the intercepting well, and the height of the overflow retaining wall higher than the lower edge of the rainwater outlet pipe is h. Due to the fact that the overflow retaining wall is added, small-flow rainwater can be directly discharged from the sewage outlet pipe through the overflow retaining wall, large-flow rainwater can close the sewage outlet pipe through the float valve, and then the rainwater is directly output from the rainwater outlet pipe after flowing over the overflow retaining wall.

Description

In-well barricade structure that adds of dirty intercepting is cut to drought

Technical Field

The utility model relates to a rain sewage pipe network drought flow cuts the damming well construction field in dirty, especially relates to a drought flow cuts and adds barricade structure in dirty damming well.

Background

The existing construction of the intercepting well in the dry flow sewage interception of the rain and sewage mixed joint mainly aims at that a sewage pipe is deeper than the buried depth of the mixed joint of a rain pipe.

However, the prior art has the following problems:

(1) when the sewage pipe elevation and the rainwater mixed point elevation are level, the daily sewage part in the intercepting well can flow into the municipal rainwater well, and the intercepting effect cannot be met.

(2) When the sewage pipe is buried deeper than the rainwater mixed joint, a lift pump is needed, and the construction cost is increased.

(3) Underground construction pipelines are more, and when elevation was towards mutually, vatch basin well position can't deepen, and sewage falls the rainbow and increases later stage maintenance cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a retaining wall structure in the drought flow sewage interception catch basin, which can effectively improve the drought flow sewage interception effect and solve the problem that the drought flow sewage disposal is carried out at the rain sewage mixed joint when the mixed joint is level with the sewage pipe elevation; therefore, the rain and sewage mixed connection condition can be effectively improved, and the water flow in the municipal rainwater well is ensured to meet the national rainwater discharge standard; the construction and operation cost caused by the selection of the sewage lifting pump is avoided, and the municipal pipeline maintenance cost is reduced.

The utility model provides an it cuts dirty catch basin in and adds barricade structure to drought flow, it includes: the bottom of the intercepting well is provided with a cushion layer, the cushion layer is provided with a foundation, and a rainwater inlet pipe and a rainwater outlet pipe are arranged in the intercepting well;

a sewage outlet pipe is also arranged in the intercepting well, a float valve is installed at the inlet of the sewage outlet pipe, the outlet height of the sewage outlet pipe is flush with the outlet height of the rainwater outlet pipe, and the inner diameter of the sewage outlet pipe is not more than that of the rainwater outlet pipe;

an overflow retaining wall is arranged in the intercepting well, the height of the overflow retaining wall higher than the lower edge of the rainwater outlet pipe is h, h is less than or equal to one third of the inner diameter of the rainwater outlet pipe, and the distance between the overflow retaining wall and the outlet of the rainwater outlet pipe in the intercepting well is not less than 20 cm.

Furthermore, the overflow retaining wall is a brick wall structure and a concrete wall body.

Further, the intercepting well is square or round.

Furthermore, the foundation is of a concrete structure, and the overflow retaining wall and the foundation are of an integrated structure.

Further, the side wall of the intercepting well or the foundation is provided with a steel bar extending to the overflow retaining wall.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. due to the addition of the overflow retaining wall, rainwater with small flow can be directly discharged from the sewage outlet pipe through the blocking of the overflow retaining wall, the sewage outlet pipe can be closed through the float valve by large-flow rainwater, and then the rainwater is directly output from the rainwater outlet pipe after overflowing the overflow retaining wall, so that the purpose that the sewage entering the intercepting well from the rainwater pipe is conveyed to a sewage treatment plant for treatment at ordinary times can be achieved.

2. The retaining wall is added in the intercepting well, so that the effect of drought flow sewage interception can be more effectively improved, and drought flow sewage discharge can be performed at the rain sewage mixing joint when the mixing joint is level with the sewage pipe; therefore, the rain and sewage mixed connection condition can be effectively improved, and the water flow in the municipal rainwater well is ensured to meet the national rainwater discharge standard; the construction and operation cost caused by the selection of the sewage lifting pump is avoided, and the municipal pipeline maintenance cost is reduced.

Drawings

Fig. 1 is a schematic view of a retaining wall structure in a drought flow sewage interception intercepting well.

Fig. 2 is a schematic diagram of a bottom of a catch basin being square, which only shows an overflow retaining wall, in which an arrow T indicates an outflow direction of a sewage outlet pipe, an arrow S indicates an inflow direction of a rainwater inlet pipe, and an arrow P indicates an outflow direction of the rainwater outlet pipe.

Detailed Description

The present invention will now be described in more detail with reference to the drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art could modify the invention herein described while still achieving the beneficial effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

As shown in fig. 1, the utility model discloses an it cuts dirty vatch basin and adds barricade structure in, it includes vatch basin 8, should be provided with bed course 5 bottom the vatch basin, is provided with basis 2 on the bed course 5, and the basis is concrete structure, is provided with rainwater inlet tube 6, rainwater outlet pipe 7 in the vatch basin, and rainwater inlet tube 6 collects the rainwater of carrying coming such as the pipe in the water of living district.

The catch basin in fig. 1 is a catch basin provided at a cut-off position of the rainwater pipe, and a rainwater inlet pipe and a rainwater outlet pipe can be formed at the catch basin after the rainwater pipe is cut off, so that corresponding modification operation is facilitated. Through the modification shown in fig. 1, a small-flow rain-sewage mixture can be conveyed to a sewage treatment plant through a sewage outlet pipe 1 for treatment, and a large-flow rain water can be discharged outside through the rainwater outlet pipe directly by closing the sewage outlet pipe through a corresponding float valve.

In this embodiment, still be provided with sewage outlet pipe 1 in the vatch basin, buoy valve 2 is installed to the entrance of sewage outlet pipe, and the flow of intaking is great in the vatch basin and lets the buoy valve start, and then closes the sewage delivery port to let large-traffic rainwater export from the rainwater outlet pipe, the export height of sewage outlet pipe highly flushes with rainwater outlet pipe export, the internal diameter of sewage outlet pipe is not more than the internal diameter of rainwater outlet pipe, large-traffic rainwater can only be followed rainwater outlet pipe and exported.

An overflow retaining wall is arranged in the catch basin, for example, the bottom of the catch basin is square, see fig. 2, through the overflow retaining wall (the structure on the right side of the containment region Z in the figure is the overflow retaining wall), rainwater can directly pass through the blocking of the overflow retaining wall after entering the containment region Z of the overflow retaining wall and be output from the sewage outlet pipe, the height of the overflow retaining wall higher than the lower edge of the rainwater outlet pipe is h, h is less than or equal to one third of the inner diameter of the rainwater outlet pipe, for example, when the inner diameter of the rainwater outlet pipe is 30cm, the value of h is 9cm, thus the effect that the overflow retaining wall blocks small-flow rainwater and outputs the sewage outlet pipe is satisfied, the efficiency that large-flow rainwater is output through the rainwater outlet pipe after entering the catch basin is not affected (the output efficiency of the rainwater outlet pipe is easily affected by the overflow retaining wall being too large), the distance, for example, the distance L between the overflow retaining wall and the rainwater outlet pipe in FIG. 2 is 30 cm.

It should be noted that the overflow retaining wall includes, but is not limited to, a brick wall structure, and the retaining wall formed by brick-laying can be used for blocking a small flow of rainwater, and the overflow retaining wall can also be a concrete wall.

The intercepting well presented in this embodiment is in the form of a square, but the intercepting well may also be in other forms, such as a circle.

In order to improve the structural strength of the overflow retaining wall, the overflow retaining wall and the foundation can be integrated into a whole based on a concrete structure, and the overflow retaining wall is also integrated with the foundation by adopting the concrete structure.

The side wall or the foundation of the intercepting well is provided with the steel bars extending to the overflow retaining wall, and when the overflow retaining wall in the form of a brick wall is internally provided with the reinforced steel bars, the strength of the overflow retaining wall can be improved.

Fig. 2 is a schematic plan effect view of the intercepting well provided with the overflow retaining wall, and other corresponding structures are omitted.

It should be noted that the catch basin is formed by adding a catch basin on a rainwater pipe behind the mixed junction or directly modifying the well position of the mixed junction.

A plurality of iron wires with the height of 2-3cm are arranged at the top of the overflow baffle wall, and impurities floating in the sewage with small flow can be blocked by utilizing a metal iron wire array structure arranged in a rectangular array. The iron wire array structure cannot play a role when large-flow rainwater flows into the catch basin, and only small-flow sewage flows into the catch basin through the rainwater inlet during non-rainy seasons to block partial impurities. Can conveniently clean when the operator regularly checks. The metal iron wire arrays arranged in the rectangular array form the effect of hanging and connecting claws, and can hang net-shaped sundries. Through this bellied iron wire array, can avoid operating personnel to trample the overflow barricade, even take place to trample, also can know the overflow barricade through judging the iron wire is crooked and stepped on, in time consolidate the structure of overflow barricade, avoid the large-traffic rainwater of rainy season to enter into the vatch basin and damage the overflow barricade.

The construction method of the retaining wall structure added in the drought flow sewage interception intercepting well comprises the following steps:

(1) and measuring the relative elevation of the rainwater mixing point and the bottom of the pipe to be connected into the sewage well according to a design drawing.

(2) And determining the positions of the intercepting well, the inspection well and the detection well by combining the design drawing and the pipeline bottom-crossing drawing.

(3) And calculating the height of the retaining wall in the intercepting well according to the difference of the relative elevations, wherein the height of the retaining wall is not more than 1/3 pipe diameters of rainwater pipes, and the distance between the retaining wall and the outlet of the rainwater pipe in the intercepting well is not less than 20 CM.

(4) After the mixed junction is transformed, the water flow direction is sequentially the intercepting well, the sewage inspection well, the detection well and the municipal sewage well.

(5) The pipeline excavation should make and enclose the fender protection, and the bilge pipeline exit will install the buoy valve additional in the well behind the vatch basin construction completion, and the buoy valve is closed when the water level is high in the vatch basin, and rivers flow in the same direction as the downspout, and adjacent inspection shaft dress one-way flap valve prevents that municipal sewage from flowing backward.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. In the drought flow cuts dirty vatch basin add barricade structure, its characterized in that, it includes:

the bottom of the intercepting well is provided with a cushion layer, the cushion layer is provided with a foundation, and a rainwater inlet pipe and a rainwater outlet pipe are arranged in the intercepting well;

a sewage outlet pipe is further arranged in the intercepting well, a float valve is mounted at the inlet of the sewage outlet pipe, the outlet height of the sewage outlet pipe is flush with the outlet height of the rainwater outlet pipe, and the inner diameter of the sewage outlet pipe is not larger than that of the rainwater outlet pipe;

be provided with the overflow barricade in the vatch basin, the height that the overflow barricade exceeds rainwater outlet pipe lower limb is h, and h less than or equal to rainwater outlet pipe internal diameter's third, the rainwater outlet pipe export is not less than 20cm in the overflow barricade distance vatch basin.

2. The drought flow sewage interception catch basin in-built retaining wall structure according to claim 1, wherein the overflow retaining wall is a brick wall structure or a concrete wall.

3. The drought flow sewage interception intercepting well added retaining wall structure according to claim 1, wherein the intercepting well is square or round.

4. The drought flow sewage interception intercepting well internally added retaining wall structure according to claim 1, wherein the foundation is a concrete structure, and the overflow retaining wall and the foundation are of an integrated structure.

5. The drought flow and sewage interception catch basin in-built retaining wall structure according to claim 4, wherein the catch basin side wall or foundation is provided with steel bars extending to the overflow retaining wall.