CN214061317U - Unpowered box culvert anti-backflow device - Google Patents
Unpowered box culvert anti-backflow device Download PDFInfo
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- CN214061317U CN214061317U CN202022991667.6U CN202022991667U CN214061317U CN 214061317 U CN214061317 U CN 214061317U CN 202022991667 U CN202022991667 U CN 202022991667U CN 214061317 U CN214061317 U CN 214061317U
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- box culvert
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Abstract
The utility model relates to an unpowered box culvert prevents flowing backward device, include: the outer box body is arranged in the box culvert, the outer wall of the outer box body is matched with the inner wall of the box culvert and is arranged close to the inner wall of the box culvert; the anti-backflow membrane valve comprises a head end and a tail end opening, wherein the head end and the tail end opening are arranged along the water flow direction, the gradually-expanding section and the reinforcing section are arranged along the water flow direction, the longitudinal section of the anti-backflow membrane valve is rectangular, the longitudinal section of the gradually-expanding section gradually expands along the water flow direction, the tail end of the anti-backflow membrane valve is consistent with the longitudinal section of the reinforcing section, the longitudinal section of the reinforcing section is matched with an inner cavity of the outer box body, and the plane where the longitudinal section is located is perpendicular to the water flow direction. Compared with the prior art, the utility model discloses can realize that the unpowered of box culvert prevents flowing backward to the aperture reaches 90%, and is little to the flood discharge influence.
Description
Technical Field
The utility model belongs to the technical field of drainage treatment technique and specifically relates to a unpowered box culvert anti-backflow device is related to.
Background
Timely and smooth rainwater drainage through the drainage box culvert is an important way for preventing urban waterlogging. The drainage of underground pipelines generally adopts gravity drainage. However, the elevation of many cities is low due to the river, and the elevation of the surrounding rivers is equal to or even higher than the area of the cities. Therefore, in the flood season, the water level of the river water rises, so that the water level of the river water is higher than that of the underground drainage pipeline, and the river water flows backwards.
In order to prevent the reverse flow of river water, a baffle, a duckbill valve or an electric door is usually arranged at the outlet of the drainage pipeline. The baffle and the duckbilled valve have the problems of large opening heads and easy blockage by sand, and the electric door needs power consumption and manual control when opened. Therefore, there is a strong need for those skilled in the art to provide a backflow prevention device with a small opening head, no jamming, no power, and no manual control.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an unpowered box culvert prevents flowing backward device, can realize that the unpowered of box culvert prevents flowing backward to the aperture reaches 90%, and is little to the flood discharge influence.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides an unpowered box culvert anti-backflow device, includes:
the outer box body is arranged in the box culvert, the outer wall of the outer box body is matched with the inner wall of the box culvert and is arranged close to the inner wall of the box culvert;
the anti-backflow membrane flap comprises a head end and a tail end which are open along the water flow direction, and specifically comprises a gradually expanding section and a reinforcing section which are arranged along the water flow direction, the longitudinal section of the anti-backflow membrane flap is rectangular, the longitudinal section of the gradually expanding section is gradually expanded along the water flow direction, the tail end of the anti-backflow membrane flap is consistent with the longitudinal section of the reinforcing section, the longitudinal section of the reinforcing section is matched with the inner cavity of the outer box body, and the plane where the longitudinal section is located is perpendicular to the water flow direction.
The top surface of the backflow-preventing valve is connected with the outer box body through a fixing nail.
The fixing nails are arranged in two rows.
The fixing nail is a screw.
The widths of the longitudinal sections at all positions of the divergent section are equal.
The wall thickness of the outer box body is less than or equal to 5 mm.
The wall thickness of the outer box body is larger than 2 mm.
The anti-backflow membrane flap is an integrally formed MVQ membrane.
The ratio of the length of the divergent section to the width of the longitudinal section thereof is 1.2-1.5.
The ratio of the length of the divergent section to the length of the reinforcing section is 5-10.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the unpowered backflow prevention of the box culvert can be realized, the opening degree reaches 90%, and the influence on flood discharge is small.
2. The structural opening and closing ensures 0 leakage, the head loss is small, and the head can be opened at the lowest 20 cm;
3. the service life is long and can reach more than 20 years, the installation is very simple, and the operation can be finished in 30 minutes at the fastest speed;
4. the device perfectly replaces the traditional backflow prevention device, and the flood discharge backflow prevention device is safe and reliable.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic left side view of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic cross-sectional view of the present invention;
wherein: 1. outer box, 2, prevent flowing backward the lamella, 3, fastener, 4, rubber seal, 5, staple.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
An unpowered box culvert anti-backflow device, as shown in fig. 1-4, comprises:
the outer box body 1 is arranged in the box culvert, the outer wall of the outer box body is matched with the inner wall of the box culvert and is arranged close to the inner wall of the box culvert;
the anti-backflow membrane flap 2 is arranged at the head end and the tail end of the anti-backflow membrane flap 2 along the water flow direction, and specifically comprises a gradually-expanding section 21 and a strengthening section 22 which are arranged along the water flow direction, the longitudinal section of the anti-backflow membrane flap 2 is rectangular, the longitudinal section of the gradually-expanding section 21 is gradually expanded along the water flow direction, the tail end of the anti-backflow membrane flap is consistent with the longitudinal section of the strengthening section 22, the longitudinal section of the strengthening section 22 is matched with the inner cavity of the outer box body 1, and the plane where the longitudinal section is located is perpendicular to the water flow direction.
As shown in fig. 3, the top surface of the backflow prevention valve 2 is connected with the outer box 1 through fixing nails 5, and the fixing nails 5 are arranged in two rows. In one embodiment, the fixation screw is a screw.
The wall thickness of the outer box body 1 is less than or equal to 5 mm, and the wall thickness of the outer box body 1 is greater than 2 mm, so that the stainless steel hollow cylinder protective cover has the characteristics of light weight and corrosion resistance, and can protect the backflow prevention diaphragm valve 2.
The anti-backflow flap 2 is an integrally formed MVQ membrane. This means that when the membrane deforming force is removed, the anti-backflow flap 2 will recover its original shape and size, thereby avoiding corrosion or functional failure problems of the anti-backflow flap 2. The anti-backflow flap 2 allows water or other liquid to flow through the membrane through the outlet side of the stainless steel housing under low head conditions, but does not allow water or other liquid to flow backwards.
The widths of the longitudinal sections of the divergent section 21 are equal, the ratio of the length of the divergent section 21 to the width of the longitudinal section is 1.2-1.5, and the ratio of the length of the divergent section 21 to the length of the reinforcing section 22 is 5-10.
The device also comprises a fastener 3 and a rubber sealing element 4, wherein the outer box body 1 is sealed in the pipeline through the rubber sealing element 4 and is fixed by the fastener, and the fastener 3 is a stainless steel rectangular bracket; stainless steel ring support passes through the stainless steel bolt fastening at the outlet side of stainless steel outer box 1, and rubber seal 4 bonds on the outer wall of outer box 1 through glue.
Claims (10)
1. The utility model provides an unpowered box culvert anti-backflow device which characterized in that includes:
the outer box body (1) is arranged in the box culvert, and the outer wall of the outer box body is matched with the inner wall of the box culvert and is arranged close to the inner wall of the box culvert;
the backflow prevention membrane valve (2) is opened at the head end and the tail end along the water flow direction, and specifically comprises a gradually expanding section (21) and a reinforcing section (22) which are arranged along the water flow direction, the longitudinal section of the backflow prevention membrane valve (2) is rectangular, the longitudinal section of the gradually expanding section (21) is gradually expanded along the water flow direction, the tail end of the backflow prevention membrane valve is consistent with the longitudinal section of the reinforcing section (22), the longitudinal section of the reinforcing section (22) is matched with the inner cavity of the outer box body (1), and the plane where the longitudinal section is located is perpendicular to the water flow direction.
2. The unpowered box culvert backflow preventing device according to claim 1, wherein the top surface of the backflow preventing diaphragm (2) is connected with the outer box body (1) through a fixing nail (5).
3. The unpowered box culvert anti-backflow device according to claim 2, wherein there are two rows of the fixing nails (5).
4. The unpowered box culvert anti-backflow device of claim 2, wherein the fixing nails are screws.
5. The unpowered box culvert anti-backflow device according to claim 1, wherein the longitudinal sections of the diverging section (21) are equal in width.
6. The unpowered box culvert anti-backflow device according to claim 1, wherein the wall thickness of the outer box body (1) is less than or equal to 5 mm.
7. The unpowered box culvert anti-backflow device according to claim 6, wherein the wall thickness of the outer box body (1) is greater than 2 mm.
8. The unpowered box culvert backflow prevention device according to claim 1, wherein the backflow prevention diaphragm (2) is an integrally formed MVQ diaphragm.
9. An unpowered culvert anti-backflow device according to claim 1, wherein the ratio of the length of the diverging section (21) to the width of the longitudinal section thereof is 1.2-1.5.
10. An unpowered culvert anti-backflow device according to claim 1, wherein the ratio of the length of the diverging section (21) to the length of the reinforcing section (22) is 5-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022991667.6U CN214061317U (en) | 2020-12-14 | 2020-12-14 | Unpowered box culvert anti-backflow device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022991667.6U CN214061317U (en) | 2020-12-14 | 2020-12-14 | Unpowered box culvert anti-backflow device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214061317U true CN214061317U (en) | 2021-08-27 |
Family
ID=77407910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022991667.6U Active CN214061317U (en) | 2020-12-14 | 2020-12-14 | Unpowered box culvert anti-backflow device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214061317U (en) |
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2020
- 2020-12-14 CN CN202022991667.6U patent/CN214061317U/en active Active
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