CN213926618U - A prevent flowing backward sewage vatch basin structure for coastal area - Google Patents
A prevent flowing backward sewage vatch basin structure for coastal area Download PDFInfo
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- CN213926618U CN213926618U CN202022038442.9U CN202022038442U CN213926618U CN 213926618 U CN213926618 U CN 213926618U CN 202022038442 U CN202022038442 U CN 202022038442U CN 213926618 U CN213926618 U CN 213926618U
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Abstract
The utility model discloses a backflow-preventing sewage intercepting well structure for coastal areas, which comprises a well body, a confluence pipe, a sewage intercepting pipe and a rainwater pipe, wherein a retaining wall is arranged in the well body, the retaining wall divides the well body into a water inlet cavity and an overflow drainage cavity, the retaining wall passes through a communicating pipe for communicating the water inlet cavity and the overflow drainage cavity, and a one-way valve for discharging sewage in the water inlet cavity into the overflow drainage cavity is arranged at an outlet of the communicating pipe; the outlet of the confluence pipe is communicated with the water inlet cavity; the inlet of the sewage interception pipe is communicated with the inside of the water inlet cavity, a valve is arranged at the inlet of the sewage interception pipe, and the outlet of the sewage interception pipe is communicated with a water treatment system of a sewage treatment plant; and the outlet of the rainwater pipe is communicated with the overflow drainage cavity. The utility model has the advantages that: the float valve is arranged, the operation is not required to be maintained by electric power or machinery, the overflow of the sewage interception pipe is automatically adjusted according to the water level of the water inlet cavity, and the automation degree is high; the design of duckbill valve can prevent effectively that river water from flowing backward.
Description
Technical Field
The invention relates to the technical field of interception, in particular to a backflow-preventing sewage intercepting well structure for coastal areas.
Background
The urban drainage is mostly discharged by adopting a hidden pipe, and the branch pipes collect rainwater or sewage, collect the rainwater or the sewage to the main pipe, and finally collect the rainwater or the sewage to the main pipe to be discharged into a water body or a sewage treatment plant. The urban sewage collecting pipe network has two types of confluence system and split system, wherein the confluence system means that rainwater and sewage share one set of pipeline, and the split system means that the rainwater and the sewage are respectively collected by different pipelines. The pollution of the combined sewage is an important reason of the black and odorous river, so a catch basin is often arranged at the discharge port of the combined pipe.
The traditional intercepting well types mainly comprise a weir type, a jump type and a flashboard type. Traditional vatch basin can realize to a certain extent that dry season sewage does not go into the river, and the effect in the river is gone into in the rainy season confluence, but it has two main problems: 1. in rainy season, most of confluence is directly discharged into a river, but a sewage pipeline is also in a full-pipe running state, a large amount of confluence enters a sewage plant to increase the running load of the sewage plant, and the effect of sewage treatment is influenced; 2. when row's mouth water level is higher, traditional vatch basin all has the backward flow phenomenon of different degrees, not only influences the effect of distribution of rain and sewage, has certain destruction to the facility of vatch basin moreover.
The rivers in the southeast coastal region are mostly in the tidal zone, and the backflow prevention facility is more important. At present, the backflow prevention device at home and abroad mainly comprises a flap valve, a duckbill valve and a control gate, wherein the flap valve has a simple structure and low manufacturing cost, but has the problems of easy corrosion, easy blockage and easy leakage; the duckbill valve is suitable for a drainage pipeline with a small pipe diameter, has a good anti-backflow effect, occupies a large space, can block the river channel from flowing flood if being directly arranged at a drainage port of the river channel, and seriously influences the service life of the duckbill valve due to long-time rain wash and erosion; the control gate is suitable for a drainage pipeline with a larger pipe diameter, has good backflow prevention and interception effects, but has high manufacturing cost and difficult operation and maintenance. Therefore, there is a need for improvements in the prior art.
Disclosure of Invention
An object of the utility model is to provide a sewage vatch basin structure that prevents flowing backward that is used for coastal area that long service life, cost are low, maintain simple not enough to prior art.
The utility model adopts the technical proposal that: a backflow-preventing sewage intercepting well structure for coastal areas comprises a well body, a confluence pipe, a sewage intercepting pipe and a rainwater pipe, wherein a retaining wall is arranged in the well body and divides the well body into a water inlet cavity and an overflow drainage cavity; the outlet of the confluence pipe is communicated with the water inlet cavity; the inlet of the sewage interception pipe is communicated with the inside of the water inlet cavity, a valve is arranged at the inlet of the sewage interception pipe, and the outlet of the sewage interception pipe is communicated with a water treatment system of a sewage treatment plant; and the outlet of the rainwater pipe is communicated with the overflow drainage cavity.
According to the scheme, the confluence pipe, the communicating pipe and the rainwater pipe are positioned at the same horizontal height; the installation height of the sewage intercepting pipe is lower than that of the confluence pipe.
According to above-mentioned scheme, the check valve is the duckbill valve, the central line of duckbill valve and the axis coincidence of communicating pipe, and the big aperture end of duckbill valve links to each other with the export of communicating pipe, and the export and the overflow drainage chamber intercommunication of duckbill valve.
According to above-mentioned scheme, the valve of locating interception sewage pipe department is the buoy valve, and the buoy valve includes flotation pontoon, flashboard and dowel bar, the both ends of dowel bar are fixed connection flotation pontoon and flashboard respectively, and the dowel bar articulates in the mouth of pipe department of intercepting sewage pipe, and the dowel bar both ends can rotate around the pin joint.
According to the scheme, the transfer rod is a bent rod and comprises a first rod section and a second rod section, and the joint of the first rod section and the second rod section is hinged at the inlet of the sewage intercepting pipe; the angle between the first pole segment and the second pole segment is 120 deg..
According to the scheme, the buoy is made of cast iron, and the surface of the buoy is provided with an anti-corrosion coating.
According to the scheme, the water inlet cavity and the overflow drainage cavity are respectively provided with the well cover.
According to the scheme, the upper part of the overflow drainage cavity is provided with the lifting opening, and the lifting opening is covered by the movable cover plate.
According to the scheme, the well body is arranged on the well seat, and both the well body and the well seat are of a prefabricated concrete structure; and plain concrete cushions are further paved at the bottoms of the water inlet cavity and the overflow drainage cavity.
The utility model has the advantages that:
1. the utility model arranges the float valve at the inlet of the sewage interception pipe, does not need electric power or machinery to maintain operation, automatically adjusts the overflow of the sewage interception pipe according to the water level of the water inlet cavity, and has high automation degree; 2. the duckbill valve is designed, so that the river water can be effectively prevented from flowing backwards; 3. the design of the water inlet cavity and the overflow drainage cavity are independent, the duckbill valve is positioned in the well body, the protection of the duckbill valve is facilitated, the insolation and the long-time rainwater erosion are prevented, and meanwhile, the problems of unattractive appearance and influence on a flood discharge section are solved; 4. the utility model discloses simple structure, construction convenience, low in cost, the later maintenance of being convenient for of prefabricated formula structure is simple.
Drawings
Fig. 1 is a schematic plan view of an embodiment of the present invention.
Fig. 2 is a front view of the present embodiment.
Fig. 3 is a side view of the present embodiment.
Wherein: 1-well lid, 2-well body, 3-removable cover plate, 4-confluence pipe, 5-sewage interception pipe, 6-float valve, 7-retaining wall, 8-duckbill valve, 9-rainwater pipe, 10-well seat, 11-overflow drainage cavity and 12-water inlet cavity.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
The backflow-preventing sewage intercepting well structure for the coastal region comprises a well body 2, a confluence pipe 4, a sewage intercepting pipe 5 and a rainwater pipe 9, wherein the well body 2 is arranged on a well base 10, a retaining wall 7 is arranged in the well body 2, the retaining wall 7 divides the well body 2 into a water inlet cavity 12 and an overflow drainage cavity 11, the retaining wall 7 penetrates through a communicating pipe for communicating the water inlet cavity 12 with the overflow drainage cavity 11, and a one-way valve for discharging sewage in the water inlet cavity 12 into the overflow drainage cavity 11 is arranged at an outlet of the communicating pipe; the outlet of the confluence pipe 4 is communicated with the water inlet cavity 12; the inlet of the sewage interception pipe 5 is communicated with the inside of the water inlet cavity 12, a valve is arranged at the inlet of the sewage interception pipe 5, and the outlet of the sewage interception pipe 5 is communicated with a water treatment system of a sewage treatment plant; the outlet of the rain pipe 9 is communicated with the overflow drainage cavity 11.
Preferably, the confluence pipe 4, the communicating pipe and the rainwater pipe 9 are located at the same level; the installation height of the sewage interception pipe 5 is lower than that of the confluence pipe 4.
Preferably, the check valve is duckbill valve 8, the central line of duckbill valve 8 coincides with the axis of communicating pipe, the large-aperture end of duckbill valve 8 links to each other with the export of communicating pipe, the export and the overflow drainage chamber 11 intercommunication of duckbill valve 8. The duckbill valve 8 is made of a flexible material, preferably a rubber material.
Preferably, the valve arranged at the sewage interception pipe 5 is a float valve 6, the float valve 6 comprises a float, a flashboard and a transfer rod, two ends of the transfer rod are respectively and fixedly connected with the float and the flashboard, the transfer rod is hinged at the pipe orifice of the sewage interception pipe 5, and two ends of the transfer rod can rotate around a hinged point; when the water level in the water inlet cavity 12 rises or falls, the buoy rises or falls along the arc-shaped track under the action of buoyancy, the transfer rod is driven to rotate around the hinged point, the flashboard at the other end of the transfer rod rotates to the outlet of the sewage interception pipe 5 along with the transfer rod, the overflow of the sewage interception pipe 5 is changed, and the purpose of controlling the opening degree of the valve according to the water level is achieved. In this embodiment, the dowel bar is a bent bar and comprises a first bar section and a second bar section, and the joint of the first bar section and the second bar section is hinged at the inlet of the sewage intercepting pipe 5; the included angle between the first rod section and the second rod section is 120 degrees, the buoy and the flashboard form a fixed angle of 120 degrees, and the angle is unchanged in the rotating process. In this embodiment, the float bowl is made of cast iron, and the surface is provided with an anti-corrosion coating.
Preferably, equally divide on intake antrum 12 and the overflow drainage chamber 11 and be provided with well lid 1 respectively, well lid 1 adopts the cast iron preparation. And a hoisting port is arranged at the upper part of the overflow drainage cavity 11, the hoisting port is covered by a movable cover plate 3, and the movable cover plate 3 is prefabricated by concrete.
In the utility model, the well body 2 is arranged on the well seat 10, and both the well body 2 and the well seat 10 are of a precast concrete structure; plain concrete cushions are further paved at the bottoms of the water inlet cavity 12 and the overflow drainage cavity 11; the retaining wall 7 between the water inlet cavity 12 and the overflow drainage cavity 11 is well sealed; the thicknesses and the reinforcing bars of the retaining wall 7, the well body 2, the well seat 10 and the like meet the design specification requirements.
In dry seasons, only sewage flows out of the confluence pipe 4, the flow rate of the sewage is small, the water level in the water inlet cavity 12 is low, the float valve 6 does not work, and the sewage directly flows out of the sewage interception pipe 5 after entering the water inlet cavity 12 through the confluence pipe 4; in rainy season, when rainwater flow is great (generally after just raining), the water level risees in the intake antrum 12, the flotation pontoon of flotation pontoon valve 6 receives the water level to influence the come-up, drive the flashboard through the dowel steel and spin up, make the flashboard block and cut the entry of dirty pipe 5, reduce greatly and cut the excessive flow of dirty pipe 5, the restriction rainwater flows in a large number and cuts dirty pipe 5, only a small amount of rain sewage confluence is carried to sewage treatment plant through cutting dirty pipe 5, guarantee sewage treatment plant's normal operating, all the other most rain sewage confluence gets into overflow drainage chamber 11 through communicating pipe and duckbilled valve 8, and discharge to the river outside through rainwater pipe 9. The design of duckbill valve 8 makes the water in intake antrum 12 get into overflow drainage chamber 11 smoothly, and when the river water level was higher, although the overflow drainage chamber 11 was filled up to river water, nevertheless can't get into intake antrum 12 through 8 refluences of duckbill valve to can prevent effectively that river water from flowing backward.
It should be noted that the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced with equivalents, but any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A backflow-preventing sewage intercepting well structure for coastal areas is characterized by comprising a well body, a flow merging pipe, a sewage intercepting pipe and a rainwater pipe, wherein a retaining wall is arranged in the well body and divides the well body into a water inlet cavity and an overflow drainage cavity; the outlet of the confluence pipe is communicated with the water inlet cavity; the inlet of the sewage interception pipe is communicated with the inside of the water inlet cavity, a valve is arranged at the inlet of the sewage interception pipe, and the outlet of the sewage interception pipe is communicated with a water treatment system of a sewage treatment plant; and the outlet of the rainwater pipe is communicated with the overflow drainage cavity.
2. The backflow-preventing sewage intercepting well structure according to claim 1, wherein the confluence pipe, the communicating pipe and the rainwater pipe are located at the same level; the installation height of the sewage intercepting pipe is lower than that of the confluence pipe.
3. The structure of an anti-backflow sewage intercepting well according to claim 1, wherein the check valve is a duckbill valve, a central line of the duckbill valve coincides with an axis of the communicating pipe, a large-diameter end of the duckbill valve is connected with an outlet of the communicating pipe, and an outlet of the duckbill valve is communicated with the overflow drainage chamber.
4. The structure of a sewage intercepting well against backflow as claimed in claim 1, wherein the valve disposed at the sewage intercepting pipe is a float valve, the float valve includes a float, a shutter, and a transmission rod, both ends of the transmission rod are respectively fixedly connected to the float and the shutter, the transmission rod is hinged at the pipe opening of the sewage intercepting pipe, and both ends of the transmission rod can rotate around the hinged point.
5. The backflow-preventing sewage intercepting well structure according to claim 4, wherein the transfer rod is a bent rod and comprises a first rod section and a second rod section, and the joint of the first rod section and the second rod section is hinged at the inlet of the sewage intercepting pipe; the angle between the first pole segment and the second pole segment is 120 deg..
6. The anti-backflow sewage intercepting well structure according to claim 5, wherein the buoys are made of cast iron, and the surfaces thereof are provided with anti-corrosion coatings.
7. The sewage intercepting well structure of claim 1, wherein the inlet chamber and the overflow drainage chamber are respectively provided with a well cover.
8. The sewage intercepting well structure of claim 4, wherein a lifting hole is provided at the upper part of the overflow drainage cavity, and the lifting hole is covered by a removable cover plate.
9. The anti-backflow sewage intercepting well structure of claim 1, wherein the well body is arranged on a well seat, and both the well body and the well seat are of a prefabricated concrete structure; and plain concrete cushions are further paved at the bottoms of the water inlet cavity and the overflow drainage cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022038442.9U CN213926618U (en) | 2020-09-17 | 2020-09-17 | A prevent flowing backward sewage vatch basin structure for coastal area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022038442.9U CN213926618U (en) | 2020-09-17 | 2020-09-17 | A prevent flowing backward sewage vatch basin structure for coastal area |
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| CN213926618U true CN213926618U (en) | 2021-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263254A (en) * | 2021-11-17 | 2022-04-01 | 中国一冶集团有限公司 | Backflow prevention device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263254A (en) * | 2021-11-17 | 2022-04-01 | 中国一冶集团有限公司 | Backflow prevention device |
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