CN212775753U - A prevent equipment of flowing backward for hydraulic engineering - Google Patents
A prevent equipment of flowing backward for hydraulic engineering Download PDFInfo
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- CN212775753U CN212775753U CN202021720587.0U CN202021720587U CN212775753U CN 212775753 U CN212775753 U CN 212775753U CN 202021720587 U CN202021720587 U CN 202021720587U CN 212775753 U CN212775753 U CN 212775753U
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Abstract
A backflow preventing device for hydraulic engineering comprises a supporting base; a first support frame and a second support frame are arranged on the support base; the first support frame is lower than the second support frame; a water outlet pipe is arranged on the first support frame; a water inlet pipe is arranged on the second support frame; a backflow preventing pipe is arranged between the water outlet pipe and the water inlet pipe; the water inlet pipe and the water outlet pipe are both provided with a rotating flange; a first funnel is arranged in the water inlet pipe; a second funnel is arranged below the first funnel; a supporting plate is arranged in the backflow preventing pipe and is positioned below the second hopper; the supporting plate is provided with a guide pipe; a connecting rod is arranged on the guide pipe; the upper end of the connecting rod is provided with a ball valve; the lower end of the connecting rod is provided with a lifting block. The utility model can be conveniently connected with a water pipe; the backflow prevention can be realized, and the pressure of water flowing through the water purifier can not be influenced; the utility model discloses simple structure, the equipment is convenient, low in production cost.
Description
Technical Field
The utility model relates to a prevent flowing backward technical field especially relates to a prevent flowing backward equipment for hydraulic engineering.
Background
Hydraulic engineering is an engineering built for the elimination of water damage and the exploitation and utilization of water resources. The service objects are divided into flood control engineering, farmland hydraulic engineering, hydroelectric power engineering, channel and harbor engineering, water supply and drainage engineering, environmental hydraulic engineering, coastal reclamation engineering and the like. The hydraulic engineering which can serve multiple targets such as flood control, water supply, irrigation, power generation and the like at the same time is called comprehensive utilization hydraulic engineering. Hydraulic engineering needs to build various types of hydraulic buildings such as dams, dikes, spillways, water gates, water inlets, channels, transition troughs, rafts, fishways and the like so as to achieve the aims. The condition of water refluence can appear often in hydraulic engineering, and water refluence can bring very big harm to suction pump or other devices, often adopts the anti-reflux valve to solve this problem among the prior art.
The backflow prevention valve is a hydraulic control assembly which limits water in a pipeline to flow in one direction only, and has the function of preventing media in the pipeline from flowing backwards under any working condition so as to achieve the purpose of avoiding backflow pollution; some backflow prevention valves on the market realize backflow prevention through the combination of a backflow prevention baffle and a torsion spring, and although the combination has a backflow prevention function when in use, other negative effects can be caused; for example, when water flows through the backflow prevention valve, the pressure at the water outlet end of the backflow prevention valve pipe is weakened to a certain extent, and certain problems are brought to water conservancy irrigation; meanwhile, the backflow prevention valve is complex in structure and high in production cost, and a torsion spring in the backflow prevention valve is easy to damage; furthermore, when two water pipes are connected to the existing backflow prevention valve, because the water pipes are long, the rotation is inconvenient, and if the threaded holes in the backflow prevention valve flange and the water pipes cannot be aligned, the installation can be very troublesome. Therefore, the anti-backflow device for the hydraulic engineering is provided to solve the existing problems.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
In order to solve the technical problems existing in the background technology, the utility model provides a backflow preventing device for hydraulic engineering, which is convenient for the utility model to be connected with a water pipe by arranging a rotating flange; by arranging the ball valve, the connecting rod and the lifting block, the backflow prevention can be realized, and the pressure of water flowing through the water-saving water dispenser can not be influenced; just the utility model discloses simple structure, the equipment is convenient, low in production cost.
(II) technical scheme
The utility model provides a backflow preventing device for hydraulic engineering, which comprises a supporting base, a water inlet pipe, a backflow preventing pipe, a water outlet pipe, a rotating flange, a first funnel, a second funnel, a supporting plate, a guide pipe, a ball valve, a connecting rod and a lifting block;
the supporting base is provided with a first supporting frame and a second supporting frame, and the first supporting frame is lower than the second supporting frame in horizontal height; the water inlet pipe is arranged on the second support frame; the water outlet pipe is arranged on the first support frame; the two ends of the backflow preventing pipe are respectively communicated with the water inlet pipe and the water outlet pipe, and the inner diameter of the backflow preventing pipe is larger than that of the water inlet pipe or the water outlet pipe; the two rotating flanges are respectively and rotatably arranged at the water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe, and a plurality of threaded holes are uniformly formed in the rotating flanges;
the first funnel and the second funnel are integrally formed, the first funnel and the second funnel are combined into a hourglass structure, the first funnel is arranged on the inner wall of the water inlet pipe, and the second funnel is positioned in the backflow preventing pipe; the supporting plate is arranged on the inner wall of the backflow preventing pipe and is positioned below the second hopper; the guide pipe is arranged on the support plate; the connecting rod is arranged in the guide pipe in a sliding manner and penetrates through the guide pipe; the ball valve is arranged at the upper end of the connecting rod, the ball valve is positioned below the second hopper, and the radius of the ball valve is larger than that of the edge of the upper end of the second hopper; the lifting block is arranged at the lower end of the connecting rod.
Preferably, the lifting block is of a circular truncated cone structure, and the outer peripheral surface of the lifting block gradually decreases along the direction close to the ball valve.
Preferably, the water inlet pipe further comprises two limiting rings, the two limiting rings are respectively arranged at the water inlet end of the water inlet pipe and the water outlet end of the water outlet pipe, a limiting groove is formed in the inner wall of the rotating flange, the limiting rings are in sliding connection with the limiting grooves, and the limiting rings are located in the limiting grooves.
Preferably, the cross section of the limiting ring is of a T-shaped structure, and the cross section of the limiting groove is of a T-shaped structure matched with the limiting ring.
Preferably, the bottom of the supporting base is provided with a non-slip mat which is a rubber mat.
Preferably, the ball valve is of a plastic hollow ball structure, and the lifting block is of a hollow block structure.
Preferably, the supporting plate is a triangular plate structure or a quadrangular plate structure, and can not only permeate water but also realize a supporting function.
Compared with the prior art, the above technical scheme of the utility model following profitable technological effect has:
when the utility model is used, the water supply end water pipe is connected with the water inlet pipe flange, the water supply pipe does not need to rotate, and the water supply pipe can be installed on the threaded hole between the utility model and the water supply pipe flange only by rotating the rotating flange, thereby being convenient for installation; after the installation is finished, the ball valve naturally falls on the guide pipe under the action of gravity, the water supply system supplies water, and when water flows through the water inlet pipe of the water supply system and comes out of the water outlet pipe, the pressure is almost unchanged, so that the water pressure in the hydraulic engineering is ensured; when the water flow in the water outlet pipe flows backwards, the water flow entering the backflow preventing pipe from the water outlet pipe exerts pressure on the lifting block, and under the action of buoyancy, the lifting block rises to drive the connecting rod to rise, so that the ball valve is driven to rise, the second funnel is blocked, and backflow prevention is achieved. Just the utility model discloses simple structure, the equipment is convenient, low in production cost, the flexibility is high during the use, and the practicality is strong.
Drawings
Fig. 1 is the utility model provides a prevent flowing backward equipment's for hydraulic engineering structural schematic.
Fig. 2 is the utility model provides a prevent flowing backward equipment's local cross-sectional view for hydraulic engineering.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a partially enlarged view of fig. 2 at B.
Reference numerals: 1. a support base; 101. a first support frame; 102. a second support frame; 2. a water inlet pipe; 3. a backflow preventing pipe; 4. a water outlet pipe; 5. rotating the flange; 501. a threaded hole; 502. a limiting groove; 6. a first hopper; 7. a second hopper; 8. a support plate; 9. a guide tube; 10. a ball valve; 11. a connecting rod; 12. a lifting block; 13. a limit ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1-4, the utility model provides a backflow prevention device for hydraulic engineering, which comprises a support base 1, a water inlet pipe 2, a backflow prevention pipe 3, a water outlet pipe 4, a rotary flange 5, a first funnel 6, a second funnel 7, a support plate 8, a guide pipe 9, a ball valve 10, a connecting rod 11 and a lifting block 12;
a first support frame 101 and a second support frame 102 are arranged on the support base 1, and the first support frame 101 is lower than the second support frame 102 in horizontal height; the water inlet pipe 2 is arranged on the second support frame 102; the water outlet pipe 4 is arranged on the first support frame 101; the two ends of the backflow preventing pipe 3 are respectively communicated with the water inlet pipe 2 and the water outlet pipe 4, and the inner diameter of the backflow preventing pipe 3 is larger than that of the water inlet pipe 2 or the water outlet pipe 4; the number of the rotating flanges 5 is two, the two rotating flanges 5 are respectively rotatably arranged at the water inlet end of the water inlet pipe 2 and the water outlet end of the water outlet pipe 4, and a plurality of threaded holes 501 are uniformly formed in the rotating flanges 5;
the first funnel 6 and the second funnel 7 are integrally formed, the first funnel 6 and the second funnel 7 are combined into a hourglass structure, the first funnel 6 is arranged on the inner wall of the water inlet pipe 2, and the second funnel 7 is positioned in the backflow preventing pipe 3; the supporting plate 8 is arranged on the inner wall of the backflow preventing pipe 3, and the supporting plate 8 is positioned below the second funnel 7; the guide tube 9 is arranged on the support plate 8; the connecting rod 11 is arranged in the guide pipe 9 in a sliding manner, and the connecting rod 11 penetrates through the guide pipe 9; the ball valve 10 is arranged at the upper end of the connecting rod 11, the ball valve 10 is positioned below the second hopper 7, and the radius of the ball valve 10 is larger than that of the edge of the upper end of the second hopper 7; the lifting block 12 is provided at the lower end of the connecting rod 11.
In an optional embodiment, the lifting block 12 is a circular truncated cone structure, the peripheral surface of the lifting block 12 is gradually reduced along the direction close to the ball valve 10, so that when water flows back from the water outlet pipe 4, the pressure on the bottom surface of the lifting block 12 is large enough, and the ball valve 10 is further ensured to be propped against the lower part of the second funnel 7, so that the backflow prevention effect is better.
In an optional embodiment, the water inlet pipe further comprises two limiting rings 13, the two limiting rings 13 are respectively arranged at the water inlet end of the water inlet pipe 2 and the water outlet end of the water outlet pipe 4, a limiting groove 502 is arranged on the inner wall of the rotating flange 5, the limiting rings 13 are slidably connected with the limiting groove 502, and the limiting rings 13 are located in the limiting groove 502.
In an alternative embodiment, the cross section of the limiting ring 13 is a T-shaped structure, the cross section of the limiting groove 502 is a T-shaped structure matched with the limiting ring 13, and the T-shaped limiting ring 13 slides in the T-shaped limiting groove 502 to ensure that the rotating flange 5 cannot slip off the limiting ring 13.
In an alternative embodiment, the bottom of the supporting base 1 is provided with a non-slip mat, and the non-slip mat is a rubber mat, so that the stability of the utility model is ensured.
In an alternative embodiment, the ball valve 10 is a plastic hollow ball structure, and the lifting block 12 is a hollow block structure, so that the hollow structure is subjected to larger buoyancy and has better backflow prevention effect.
In an alternative embodiment, the support plate 8 is a triangular plate or a rectangular plate, which is both permeable to water and supportive.
When the utility model is used, the water supply end water pipe is connected with the water inlet pipe 2 by the flange, the water supply pipe does not need to rotate, and the water supply pipe can be installed on the threaded hole between the utility model and the water supply pipe flange only by rotating the rotating flange 5, thereby being convenient for installation; after the installation is finished, the ball valve 10 naturally falls on the guide pipe 9 under the action of gravity, water is supplied by a water supply system, and when water flows through the water inlet pipe 2 and comes out of the water outlet pipe 4, the pressure is almost unchanged, so that the water pressure in the hydraulic engineering is ensured; when the water flow in the water outlet pipe 4 flows backwards, the water flow entering the backflow preventing pipe 3 from the water outlet pipe 4 exerts pressure on the lifting block 12, and under the action of buoyancy, the lifting block 12 rises to drive the connecting rod 11 to rise, so that the ball valve 10 is driven to rise, so that the second funnel 7 is blocked, and backflow prevention is realized. Just the utility model discloses simple structure, the equipment is convenient, low in production cost, the flexibility is high during the use, and the practicality is strong.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. A backflow prevention device for hydraulic engineering is characterized by comprising a supporting base (1), a water inlet pipe (2), a backflow prevention pipe (3), a water outlet pipe (4), a rotating flange (5), a first funnel (6), a second funnel (7), a supporting plate (8), a guide pipe (9), a ball valve (10), a connecting rod (11) and a lifting block (12);
a first support frame (101) and a second support frame (102) are arranged on the support base (1), and the first support frame (101) is lower than the second support frame (102) in horizontal height; the water inlet pipe (2) is arranged on the second support frame (102); the water outlet pipe (4) is arranged on the first support frame (101); two ends of the backflow preventing pipe (3) are respectively communicated with the water inlet pipe (2) and the water outlet pipe (4), and the inner diameter of the backflow preventing pipe (3) is larger than that of the water inlet pipe (2) or the water outlet pipe (4); the two rotating flanges (5) are respectively and rotatably arranged at the water inlet end of the water inlet pipe (2) and the water outlet end of the water outlet pipe (4), and a plurality of threaded holes (501) are uniformly formed in the rotating flanges (5);
the first funnel (6) and the second funnel (7) are integrally formed, the first funnel (6) and the second funnel (7) are combined into a hourglass structure, the first funnel (6) is arranged on the inner wall of the water inlet pipe (2), and the second funnel (7) is positioned in the backflow preventing pipe (3); the supporting plate (8) is arranged on the inner wall of the backflow preventing pipe (3), and the supporting plate (8) is positioned below the second funnel (7); the guide pipe (9) is arranged on the support plate (8); the connecting rod (11) is arranged in the guide pipe (9) in a sliding manner, and the connecting rod (11) penetrates through the guide pipe (9); the ball valve (10) is arranged at the upper end of the connecting rod (11), the ball valve (10) is positioned below the second hopper (7), and the radius of the ball valve (10) is larger than that of the edge of the upper end of the second hopper (7); the lifting block (12) is arranged at the lower end of the connecting rod (11).
2. The backflow prevention device for the hydraulic engineering according to claim 1, wherein the lifting block (12) is of a circular truncated cone structure, and the outer peripheral surface of the lifting block (12) is gradually reduced along a direction close to the ball valve (10).
3. The backflow preventing device for the water conservancy project according to claim 1, further comprising two limiting rings (13), wherein the two limiting rings (13) are arranged, the two limiting rings (13) are respectively arranged at the water inlet end of the water inlet pipe (2) and the water outlet end of the water outlet pipe (4), a limiting groove (502) is formed in the inner wall of the rotating flange (5), the limiting rings (13) are slidably connected with the limiting grooves (502), and the limiting rings (13) are located in the limiting grooves (502).
4. The backflow prevention device for the water conservancy project according to claim 3, wherein the cross section of the limiting ring (13) is of a T-shaped structure, and the cross section of the limiting groove (502) is of a T-shaped structure matched with the limiting ring (13).
5. The backflow preventing device for the water conservancy project according to claim 1, wherein a non-slip mat is arranged at the bottom of the supporting base (1), and the non-slip mat is a rubber mat.
6. The backflow prevention device for the water conservancy project according to claim 1, wherein the ball valve (10) is of a plastic hollow ball structure, and the lifting block (12) is of a hollow block structure.
7. The equipment of claim 1, wherein the support plate (8) is of triangular or quadrangular plate-like configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021720587.0U CN212775753U (en) | 2020-08-18 | 2020-08-18 | A prevent equipment of flowing backward for hydraulic engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021720587.0U CN212775753U (en) | 2020-08-18 | 2020-08-18 | A prevent equipment of flowing backward for hydraulic engineering |
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| Publication Number | Publication Date |
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| CN212775753U true CN212775753U (en) | 2021-03-23 |
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| CN202021720587.0U Active CN212775753U (en) | 2020-08-18 | 2020-08-18 | A prevent equipment of flowing backward for hydraulic engineering |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638798A (en) * | 2021-08-08 | 2021-11-12 | 中国船舶重工集团公司第七一九研究所 | Prevent sea water backward flow gas vent device |
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2020
- 2020-08-18 CN CN202021720587.0U patent/CN212775753U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638798A (en) * | 2021-08-08 | 2021-11-12 | 中国船舶重工集团公司第七一九研究所 | Prevent sea water backward flow gas vent device |
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