CN206916892U - A kind of backward flowing preventing device for city river discharge outlet - Google Patents
A kind of backward flowing preventing device for city river discharge outlet Download PDFInfo
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- CN206916892U CN206916892U CN201720727305.1U CN201720727305U CN206916892U CN 206916892 U CN206916892 U CN 206916892U CN 201720727305 U CN201720727305 U CN 201720727305U CN 206916892 U CN206916892 U CN 206916892U
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- discharge outlet
- cloth
- cover mouth
- cylinder
- cloth cylinder
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Abstract
The utility model discloses a kind of backward flowing preventing device for city river discharge outlet.It includes rigid grid cover mouth, flexible barrier cloth cloth cylinder and counter weight strip.Rigid grid cover mouth is connected by hinged-support with discharge outlet；Flexible barrier cloth cloth cylinder one end is fixed on rigid grid cover mouth, and the other end is free end；The diameter of rigid grid cover mouth and the diameter of flexible barrier cloth cloth cylinder are consistent with discharge outlet diameter；The tube length of flexible barrier cloth cloth cylinder is 1.1~1.5 times of cylinder diameter.During the rainy day, discharge outlet rainwater struts cloth cylinder automatically, and following current resistance is small；During dry days, even if in the case where river is higher than discharge outlet, cloth cylinder is close on the grid of rigid grid cover mouth by the reverse pressure effect of river, reaches the purpose for preventing river from pouring in down a chimney.Free end counter weight strip makes cloth cylinder free fall, keeps discharge outlet neat appearance.The device performance is excellent, and resistance of water drainage is small, and reverse-filling effect is good, cheap, easy for installation, safeguards simply, has popularizing application prospect.
Description
Technical field
A kind of city river discharge outlet backward flowing preventing device is the utility model is related to, especially suitable for urban water environment management,
Ensure that municipal sewage collection system processing system is safe for operation, improve and cut down pollutant efficiency.
Background technology
Discharge outlet is directed to natural water discharge or overflow sewage, rainwater, the pumping equipment of combined sewage.Discharge outlet produces
Sewage is in line or pollution load of overflow, is the main reason for causing water environment degradation；River pours in down a chimney into municipal sewage through discharge outlet
Processing system, sewage treatment plant inflow concentration will be reduced, influence pollution control efficiency, very big impact load can be produced when serious and
Sewage treatment plant is caused to be paralysed.In urban water environment management, discharge outlet improvement is the weight in " dirt is cut in control source " a series of measures
Link is wanted, combined sewage, mixed flow sewage and first rain sewage are needed to dam into urban sewage treatment system, while must be to phase
The discharge outlet answered carries out reverse-filling transformation, and in general city has thousands of very big to tens thousand of related drain mouths not waited, the market demand.
The city river discharge outlet backward flowing preventing device of function admirable will produce huge environmental benefit and economic benefit.
Urban Water Environment deteriorates and urban waterlogging has become the serious urban disease in China.On the one hand, in order to improve city
Water environment pollutes it is necessary to reduce into river, prevents discharge outlet dry days from going out stream；On the other hand, in order to avoid urban waterlogging, ensure again
It is smooth that rainy day discharge outlet goes out circulation.This just needs safe and reliable discharge outlet backward flowing preventing device.
At present, the most frequently used device is flap valve and duckbill valve.Flap valve is mounted to the tail end of drainage pipeline, has outside preventing
Water pours in down a chimney the non-return valve of function.Flap valve is mainly made up of valve seat, valve plate, Mi Tufengquan, the part of hinge four.Duckbill valve is by elastic chlorine
Buna adds staple fibre to be process through special, and shape is similar to duckbilled.Internally in the case of no pressure, duckbill outlet is at itself
Close up under elastic reaction；Gradually increase with internal pressure, duckbill outlet gradually increases, and keeps liquid to be discharged under high flow rate.
The shortcomings that flap valve and duckbill valve is that drainage effluent resistance is big, expensive.Separately there is the new technology of some reverse-fillings, some devices need
Want regular manual adjustment；Some apparatus structures are complicated, easily malfunction and are failure to actuate, poor reliability is expensive.
The content of the invention
The utility model is in view of the deficienciess of the prior art, provide a kind of simple in construction, easy for installation, reverse-filling performance
It is good, and cheap city river discharge outlet backward flowing preventing device.
Realize that the technical scheme of the present utility model purpose provides a kind of city river discharge outlet backward flowing preventing device, it is wrapped
Include rigid grid cover mouth, flexible barrier cloth cloth cylinder and counter weight strip；Described rigid grid cover mouth passes through hinged-support and discharge outlet phase
Connection, flexible barrier cloth cloth cylinder one end is fixed on rigid grid cover mouth, and the other end is free end, flexible barrier cloth cloth cylinder from
Counter weight strip is provided with by end.
A preferred scheme of the present utility model is：The diameter of rigid grid cover mouth and the diameter of flexible barrier cloth cloth cylinder with
Discharge outlet diameter is consistent；The tube length of flexible barrier cloth cloth cylinder is 1.1~1.5 times of cylinder diameter.
Rigid grid cover mouth described in the utility model, its structure are that outer inframe sets grid, and hinged-support is fixed on housing
On.
Rigid grid cover mouth provided by the utility model uses the material with stronger rigidity and decay resistance to be made, soft
Property antiseepage cloth cloth cylinder is made up of flexibility, antiseepage, corrosion-resistant, ageing-resistant fabric.
Using discharge outlet backward flowing preventing device in river course provided by the utility model, during the rainy day, discharge outlet rainwater struts cloth automatically
Cylinder, following current resistance are small；During dry days, even if in the case where river is higher than discharge outlet, cloth cylinder is close to by the reverse pressure effect of river
On the grid in rigid grid cover mouth, reach the purpose for preventing river from pouring in down a chimney.Free end counter weight strip makes cloth cylinder free fall, protects
Hold discharge outlet neat appearance.
Compared with prior art, the beneficial effects of the utility model are：The device performance of offer is excellent, resistance of water drainage
Small, reverse-filling effect is good；It is cheap, 1/10th of only existing usual means price；It is easy for installation, safeguard simple；Tool
There is popularizing application prospect.
Brief description of the drawings
Fig. 1 is the structural representation for the backward flowing preventing device that the utility model embodiment provides；
Fig. 2 is the structural representation of the rigid grid cover mouth of backward flowing preventing device；
Fig. 3,4 are schematic diagram of the backward flowing preventing device in opening and closed mode respectively；
In figure, 1, rigid grid cover mouth；2nd, flexible barrier cloth cloth cylinder；3rd, counter weight strip；4th, hinged-support；5th, housing；6th, grid；
7th, drainpipe；8th, quaywall.
Embodiment
Technical solutions of the utility model are further elaborated with reference to the accompanying drawings and examples.
Embodiment 1
Referring to attached Fig. 1 and 2, Fig. 1 is the structural representation for the backward flowing preventing device that the present embodiment provides；Fig. 2 is anti-down filling
The structural representation for the rigid grid cover mouth put；Backward flowing preventing device mainly includes：Rigid grid cover mouth 1, flexible barrier cloth cloth cylinder
2, counter weight strip 3；Rigid grid cover mouth 1 is made up of the material with stronger rigidity and decay resistance, and grid 6 is fixed on housing 5
Interior, hinged-support 4 is fixed on housing 5, and backward flowing preventing device is connected by hinged-support 4 with discharge outlet, can both be firmly installed, and just
In dismounting, and it can effectively prevent dirt blocking device；Flexible barrier cloth cloth cylinder 2 is by flexibility, antiseepage, corrosion-resistant, ageing-resistant face
Material is made, and one end and the rigid grid cover mouth 1 of cloth cylinder are fixed, and the other end is free end, and free end sets counter weight strip 3, makes cloth cylinder
Free fall, keep discharge outlet neat appearance；Diameter and the draining of the diameter and flexible barrier cloth cloth cylinder 2 of rigid grid cover mouth 1
Mouth diameter is consistent；In the present embodiment, the length L of flexible barrier cloth cloth cylinder 2 is 1.1~1.5 times of cloth cylinder diameter D.
Referring to accompanying drawing 3 and 4, they are schematic diagram of the backward flowing preventing device in opening and closed mode respectively.Referring to attached
Fig. 3, the drainpipe 7 set on quaywall 8, rigid grid cover mouth 1 are fixed on discharge outlet, now, during the rainy day, discharge outlet rainwater water outlet
Water increases, and discharge outlet rainwater struts cloth cylinder counter weight strip 3 automatically, and flexible barrier cloth cloth cylinder 2 is in softened state, and following current resistance is small；
Referring to accompanying drawing 4, during dry days, even if in the case where river is higher than discharge outlet, flexible barrier cloth cloth cylinder 2 by counter weight strip 3 effect
Naturally drop, cloth cylinder is close on the grid of rigid grid cover mouth by the reverse pressure effect of river, and reaching prevents what river from pouring in down a chimney
Purpose.
Claims (4)
- A kind of 1. city river discharge outlet backward flowing preventing device, it is characterised in that：It includes rigid grid cover mouth（1）, flexible barrier Cloth cloth cylinder（2）And counter weight strip（3）；Described rigid grid cover mouth（1）Pass through hinged-support（4）It is connected with discharge outlet, flexibility is anti- Ooze cloth cloth cylinder（2）One end is fixed on rigid grid cover mouth（1）, the other end is free end, in flexible barrier cloth cloth cylinder（2）Freedom End is provided with counter weight strip（3）.
- A kind of 2. city river discharge outlet backward flowing preventing device according to claim 1, it is characterised in that：Rigid grid cover mouth （1）Diameter and flexible barrier cloth cloth cylinder（2）Diameter it is consistent with discharge outlet diameter.
- A kind of 3. city river discharge outlet backward flowing preventing device according to claim 1, it is characterised in that：Flexible barrier cloth cloth Cylinder（2）Tube length be 1.1~1.5 times of cylinder diameter.
- A kind of 4. city river discharge outlet backward flowing preventing device according to claim 1, it is characterised in that：Described rigid mesh Lattice cover mouth（1）, its structure is housing（5）Interior setting grid 6, hinged-support（4）It is fixed on housing（5）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720727305.1U CN206916892U (en) | 2017-06-21 | 2017-06-21 | A kind of backward flowing preventing device for city river discharge outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720727305.1U CN206916892U (en) | 2017-06-21 | 2017-06-21 | A kind of backward flowing preventing device for city river discharge outlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206916892U true CN206916892U (en) | 2018-01-23 |
Family
ID=61322049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720727305.1U Active CN206916892U (en) | 2017-06-21 | 2017-06-21 | A kind of backward flowing preventing device for city river discharge outlet |
Country Status (1)
| Country | Link |
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| CN (1) | CN206916892U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991291A (en) * | 2022-05-27 | 2022-09-02 | 安徽昌成建设工程有限公司 | Municipal drainage is with mouth of pipe that dams prevents flowing backward structure |
-
2017
- 2017-06-21 CN CN201720727305.1U patent/CN206916892U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991291A (en) * | 2022-05-27 | 2022-09-02 | 安徽昌成建设工程有限公司 | Municipal drainage is with mouth of pipe that dams prevents flowing backward structure |
| CN114991291B (en) * | 2022-05-27 | 2024-03-15 | 安徽昌成建设工程有限公司 | Municipal drainage is with structure of preventing flowing backward with shutoff mouth of pipe |
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