CN214656822U - Cut-off equipment suitable for confluence system drainage canal - Google Patents

Abstract

The utility model discloses an intercepting device suitable for confluence system drainage canal, include: the system comprises a sand setting area, a grating, an intercepting pipe, an overflow gate and an intercepting well body; the sand settling area is arranged at the tail end of the combined drainage channel and is communicated with the water outlet end of the combined drainage channel; the water outlet end of the sand settling zone is connected with an intercepting pipe through a grating, and the other end of the intercepting pipe is connected with the intercepting well body; and the overflow gate is arranged at the overflow port of the combined drainage channel. The intercepting device is simple in structure, can well prevent deposited silt from blocking the intercepting pipe and the intercepting well body, and can also accurately control the intercepting amount of the combined sewage.

Description

Cut-off equipment suitable for confluence system drainage canal

Technical Field

The utility model relates to a water treatment facilities especially relates to an intercepting device suitable for confluence system drainage canal.

Background

In recent years, with the gradual improvement of urbanization level, people pay more and more attention to urban ecological environment, and in the rapid urbanization process, urban domestic sewage and rainfall runoff are still discharged from some urban areas through combined drainage channels due to various reasons such as history, economy and the like. In sunny days, domestic sewage is discharged to a receiving water body, and the water quality of a river channel is seriously influenced; when raining, the rainwater washes away the sediment in the channel, and the sediment migrates to the receiving water body along with rainfall runoff, so that the receiving water body is polluted greatly. The urban area cannot be subjected to rainwater and sewage diversion transformation for various reasons, and the basic idea of the existing treatment is to arrange a cut-off device at the tail end of an open channel to cut off sewage and partial rainfall runoff in sunny days, so that the overflow pollution to a river channel is reduced. However, due to the accumulation of various domestic garbage, silt and other sediments in the drainage channel, once overflowing occurs in rainy days, a large amount of garbage and suspended substances are carried into the river channel, and serious pollution is caused to the water body.

The prior art provides a groove type intercepting well as an intercepting device, which can be directly transformed from the existing confluence pipeline inspection well, wherein an intercepting groove with the same width as the diameter of an intercepting pipe is generally arranged in the well, the bottom of the groove is lower than the inner bottom of the confluence pipe, and the depth of the groove is generally smaller than the diameter of the intercepting pipe. Generally speaking, the trough type intercepting well has higher intercepting efficiency, and is not provided with an overflow weir, so that the drainage capacity of a converging pipeline is not influenced. However, such shut-off devices have at least the following disadvantages: (1) the intercepting amount of the groove type intercepting well is difficult to control, and river water flows backward easily to the intercepting pipe in urban areas with higher normal water level and flood level of a river channel, and sewage is easy to leak when the sewage amount changes greatly; (2) the trench type intercepting well is easy to block the pipeline by deposited silt.

The prior art still provides a weir formula vatch basin as cut-off equipment, and the formula of damming is damming at home and abroad and is used extensively, the technique is also more mature's cut-off equipment in the formula of damming confluence system transformation, and its structure is simplest, just establishes an overflow weir in the well, does not have the overflow when guaranteeing dry season sewage maximum flow, and whole damming is to municipal sewage pipe network, and the flow that rainy season got into the sewage pipe network can be controlled, and the confluence sewage that exceeds the volume of damming is then crossed the overflow weir and is discharged into the river course water again. However, the weir-type intercepting well has at least the following disadvantages: (1) the weir formula vatch basin is because fixed weir, can't adjust the volume of damming according to the rainfall condition, can not realize accurate cutting dirty: (2) the weir type intercepting well is easy to accumulate silt, so that the intercepting well is blocked, and the cleaning difficulty is higher.

SUMMERY OF THE UTILITY MODEL

Based on the problem that prior art exists, the utility model aims at providing an intercepting device suitable for confluence system drainage canal can solve the unable volume of intercepting according to the rainfall condition adjustment that exists of the intercepting device that current confluence system drainage canal used, can not realize accurate cutting to and easily pile up the silt particle, cause vatch basin or pipe blockage, the great scheduling problem of the clearance degree of difficulty.

The utility model aims at realizing through the following technical scheme:

the system comprises a sand setting area, a grating, an intercepting pipe, an overflow gate and an intercepting well body; wherein the content of the first and second substances,

the sand settling zone is arranged at the tail end of the combined drainage channel and is communicated with the water outlet end of the combined drainage channel;

the water outlet end of the sand settling zone is connected with the intercepting pipe through the grating, and the other end of the intercepting pipe is connected with the intercepting well body;

and the overflow gate is arranged at the overflow port of the combined drainage channel.

By the foregoing the utility model provides a technical scheme can see out, the embodiment of the utility model provides a be applicable to the damming device of confluence system drainage canal, its beneficial effect is:

by arranging the sand setting area and the grating, the silt can be well deposited, the blockage of the intercepting pipe and the intercepting well is avoided, and the difficulty of subsequent cleaning is reduced; the overflow gate is arranged at the overflow port of the combined drainage channel, the combined sewage intercepting flow can be controlled in rainy days by controlling the opening and closing of the overflow gate, and the accurate sewage intercepting is realized. The intercepting device is simple in structure, can well prevent deposited silt from blocking the intercepting pipe and the intercepting well, and can accurately control the intercepting amount of the confluence sewage.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic top view of a flow cut-off device according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a flow cut-off device according to an embodiment of the present invention;

the part names corresponding to the marks in the figure are as follows: 1-a sand setting zone; 2-a grid; 3-intercepting pipe; 4-an overflow gate; 5-confluence drainage channel; 6-intercepting well body; 7-sewage interception gate.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the 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 embodiment of 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. Details not described in the embodiments of the present invention belong to the prior art known to those skilled in the art.

As shown in fig. 1 and 2, the embodiment of the utility model provides a cut-off equipment suitable for confluence system drainage canal, include:

the system comprises a sand setting area, a grating, an intercepting pipe, an overflow gate and an intercepting well body; wherein the content of the first and second substances,

the sand settling zone is arranged at the tail end of the combined drainage channel and is communicated with the water outlet end of the combined drainage channel;

the water outlet end of the sand settling zone is connected with the intercepting pipe through the grating, and the other end of the intercepting pipe is connected with the intercepting well body;

and the overflow gate is arranged at the overflow port of the combined drainage channel.

In the above cut-off device, the grit zone adopts a grit chamber.

In the above cut-off device, the overflow gate is an electric control gate.

Above-mentioned cut-off equipment still includes: a liquid level monitoring device and a control device; wherein the content of the first and second substances,

the liquid level monitoring device is arranged in the intercepting pipe and can detect the liquid level in the intercepting pipe and send a liquid level signal;

the control device is respectively electrically connected with the liquid level monitoring device and the control end of the overflow gate, and can control the opening or closing of the overflow gate according to the liquid level signal of the liquid level monitoring device.

Above-mentioned cut-off equipment still includes: and the sewage interception gate is arranged at the sewage interception wellhead of the intercepting well body.

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the utility model provides an intercepting device suitable for a combined drainage channel, a sand setting area is arranged in the combined drainage channel and is connected with an intercepting pipe through the sand setting area, the sand setting area is provided with a grid at the position leading to the intercepting pipe, and the intercepting pipe is connected with an intercepting well body; the interception device enables clear-day sewage or rainy-day confluent sewage in the confluence drainage channel to pass through a sand setting area to precipitate most of silt, the sewage after sand setting is led to the interception pipe, garbage in the drainage channel is blocked by the arranged grating, and the amount of the silt which flows to the interception pipe or overflows to a river channel is greatly reduced by the sedimentation and the grating blocking of the grit area;

the interception device is provided with an overflow gate at an overflow port of the combined drainage channel, and the interception amount of combined sewage in rainy days is controlled through the overflow gate so as to realize accurate interception; if the opening and closing of the overflow gate can be controlled according to the rainfall condition and the liquid level of the intercepting pipe network. And when the river course water level is higher, can close the overflow gate, avoid the river to flow backward to the pipe network that dams.

The utility model discloses an intercepting device, establish a shut-off well body between the end of confluence system drainage canal and entering the river crossing, set up a grit chamber as the sand setting area before entering the shut-off well body for the silt particle in the sediment sewage, can regularly clear up according to the silt particle volume, reduce the silt particle to get into the interception pipeline, damage the subsequent equipment; the overflow of joining system drainage canal to the overflow mouth department in river course sets up adjustable overflow gate, sets up at the cut-off mouth of intercepting the well body and cuts the dirty gate, cuts opening and close of liquid level control overflow gate and cut dirty gate in the sewage according to the rainfall condition, reduces the overflow and goes into river pollution volume to prevent that river water from flowing backward.

The specific control mode is as follows:

(1) and in sunny days, the sewage interception gate is opened, the overflow gate is closed, and sewage enters the sewage interception pipe after the sewage is precipitated in the grit chamber in sunny days. If the river water is higher than the liquid level in the intercepting well, the river water is prevented from flowing backwards

(2) In the early stage of rainfall, the sewage interception gate is opened, the overflow gate is closed, the combined sewage of the mixed sewage and the initial rainwater enters the sewage interception pipe after being precipitated in the grit chamber, the pollution of entering a river is reduced, and when the river level is higher than the liquid level of the intercepting well, the river is prevented from flowing backwards.

(3) When the rainfall continues, the liquid level in the sewage interception pipe is higher than a set value (the sewage plant runs at full load), the sewage interception gate is closed, and the overflow gate is opened, so that the rainwater overflows to the river channel.

The utility model discloses an intercepting device has following beneficial effect at least: the sand setting area is arranged in front of the intercepting pipe, so that the influence of the silt on the intercepting pipe can be effectively controlled, the silt amount of the overflow into the river is reduced, and the intercepting efficiency is improved. The overflow gate is arranged at the overflow port of the combined drainage channel, so that the intercepting flow can be effectively controlled according to the rainfall and the liquid level of the intercepting pipe, and the river water is prevented from flowing backwards.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (5)

1. The utility model provides a cut-off equipment suitable for confluence system drainage canal which characterized in that includes:

the system comprises a sand setting area, a grating, an intercepting pipe, an overflow gate and an intercepting well body; wherein the content of the first and second substances,

the sand settling zone is arranged at the tail end of the combined drainage channel and is communicated with the water outlet end of the combined drainage channel;

the water outlet end of the sand settling zone is connected with the intercepting pipe through the grating, and the other end of the intercepting pipe is connected with the intercepting well body;

and the overflow gate is arranged at the overflow port of the combined drainage channel.

2. The flow stop apparatus for a combined drainage channel of claim 1, wherein the grit zone comprises a grit chamber.

3. The flow stop apparatus for a combined drainage channel of claim 1, wherein the overflow gate is an electrically controlled gate.

4. A flow stop apparatus for a combined drainage channel according to any one of claims 1 to 3, further comprising:

a liquid level monitoring device and a control device; wherein the content of the first and second substances,

the liquid level monitoring device is arranged in the intercepting pipe and can detect the liquid level in the intercepting pipe and send a liquid level signal;

the control device is respectively electrically connected with the liquid level monitoring device and the control end of the overflow gate, and can control the opening or closing of the overflow gate according to the liquid level signal of the liquid level monitoring device.

5. A flow stop apparatus for a combined drainage channel according to any one of claims 1 to 3, further comprising: and the sewage interception gate is arranged at the sewage interception wellhead of the intercepting well body.

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