CN101520101B - Double-plate slow-shut check valve - Google Patents
Double-plate slow-shut check valve Download PDFInfo
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- CN101520101B CN101520101B CN2009100428418A CN200910042841A CN101520101B CN 101520101 B CN101520101 B CN 101520101B CN 2009100428418 A CN2009100428418 A CN 2009100428418A CN 200910042841 A CN200910042841 A CN 200910042841A CN 101520101 B CN101520101 B CN 101520101B
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- valve
- plate
- slow
- check
- valve body
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- 230000001154 acute effect Effects 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 238000005086 pumping Methods 0.000 abstract description 10
- 230000002262 irrigation Effects 0.000 abstract description 8
- 238000003973 irrigation Methods 0.000 abstract description 8
- 230000001066 destructive effect Effects 0.000 abstract description 7
- 230000000875 corresponding effect Effects 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 241001463139 Vitta Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The invention discloses a double-plate slow-shut check valve. A check opening at the front end of a valve (3) forms a backward-inclined 2 to 30 degree acute angle with a water inlet flange face. The inside of the check opening at the front end of the valve (3) is provided with a vertical beam (10) of which the front face is level with the check opening. The vertical beam (10) and the annular surface of the check opening are provided with dovetail grooves (4). The valve (3) in front of the dovetail grooves (4) is provided with a valve shaft (5) parallel to the check opening. A left semicircularvalve plate (6) and a right semicircular valve plate (11) are positioned on the valve shaft (5) in a door hinge state. At least one side of the valve (3) is provided with a slow-shut part (8) corresp onding to the left semicircular valve plate (6) or the right semicircular valve plate (11). The double-plate slow-shut check valve has the characteristics of large excess flow, small resistance to water-flow, low shutting noise and a shut-slowing function that can eliminate destructive water hammer, and can be applied to pipe outlets of an irrigation and drainage pumping station and arranged in common pipe network system.
Description
Technical field
The present invention relates to a kind of non-return flap, particularly relate to a kind of irrigation and drainage pumping station pipe outlet that both can be applicable to and also can be installed on common pipe network system, be used to prevent medium counter flow after the termination of pumping and make valve close the double-plate slow-shut check valve that produces destructive water hammer rapidly.
Technical background
At present; the valve of home and abroad irrigation and drainage pumping station; be commonly rotating hanging formula and side turn over structure; though these flap valve valves have also worked to prevent flood reverse current protection farm cities and towns for a long time; but there is the defective that aperture is little, energy loss is big; particularly, this class flap valve valve does not all have effective Slow Close mechanism.Input along with national water conservancy construction; large-scale, heavy caliber drainage pumping plant gets more and more; the pumping plant that more than ten even tens drainage pipe is installed on dykes and dams is more and more; bore even reach 5M; in the process of drainning off floodwaters; in case abnormal power-down shutdown situations such as thunderbolt occur, many disposable simultaneously quick closedowns of flap valve valve will produce powerful impact of water hammer, to the dam safety performance with cause great harm working life.At orderly closedown situation ShiShimonoseki valve, existing flap valve valve also produces the great sound.In fact people have produced general understanding for the destructive water hammer in the pipe network system, and various buffer valves emerge in an endless stream, and for growing irrigation and drainage system, also are badly in need of the more reliable novel valve of Safety performance.
Summary of the invention
The present invention will provide that a kind of flow is big, and resistance to water-flow is little, and it is little to close the sound, and has the double-plate slow-shut check valve that the Slow Close function can be eliminated destructive impact of water hammer.
In order to solve the problems of the technologies described above, double-plate slow-shut check valve provided by the invention, include valve body, described valve body front end check mouth and water-in flange face are provided with tilting backward 2-30 ° acute angle, in described valve body front end check mouth, be provided with vertical beam, the front of described vertical beam and check mouth are in same plane, on described vertical beam and check choma face, be provided with dovetail groove, a valve shaft parallel with the check mouth is installed on the valve body of described dovetail groove front, left semicircle shape valve plate and right semicircular valve plate are the door hinge state and are positioned on the described valve shaft, two semicircle valve plates form a full circle with whole valve body front end check mouth closure when closing, be equipped with wear-resistant pad at described left semicircle shape valve plate and right semicircular valve plate and with the hinged place of described valve shaft, with the rotation flexibility that improves valve plate and valve working life, at least one side of described valve body be equipped with one with described left semicircle shape valve plate or the corresponding Slow Close parts of right semicircular valve plate, promptly these Slow Close parts can be installed in valve body one side, one of them semicircle valve plate is carried out Slow Close, also can Slow Close parts be installed respectively two semicircle valve plates are carried out Slow Close respectively in the both sides of valve body.The Slow Close parts are installed on the valve flowing channel outside, and medium fluidised form in the interference tube does not help reducing the valve flow resistance.Valve body, valve plate can adopt plastics or metal to make according to medium and pressure condition.
Described Slow Close parts are to be provided with Slow Close cylinder and Slow Close cover and end cap on described valve body; in described Slow Close cylinder, be provided with and described left semicircle shape valve plate or the corresponding piston rod of right semicircular valve plate; in described Slow Close cylinder, be provided with the spring that is between described piston rod and the end cap; on described Slow Close cylinder, be provided with the rod chamber of the described Slow Close cylinder of connection and the fluid passage of rodless cavity; on described valve body, be provided with the needle-valve corresponding, on described valve body, be provided with the protection bolt corresponding with described needle-valve with described fluid passage.
Be provided with a flanged (FLGD) valve body at described valve outlet end, can make this valve be applied to pipe network system.
For mostly being submergence, adaptation irrigation and drainage pumping station outlet non-return flap goes out stream, its fluid passage of Slow Close parts of being adorned on the valve body directly is opened on the Slow Close casing wall, the drawback of corrosion of having avoided external vitta structure and having produced and increase leakage point, and simplify modular construction, reduced component.The Slow Close parts are formed by Slow Close cylinder, piston rod, Slow Close cover, end cap, spring, needle-valve, protection bolt and seals and other component.When valve was opened under hydraulic action, piston rod was released under spring action, and medium flows into back cavity by tube wall channel in the Slow Close cylinder ante-chamber.When closing valve, valve is closed rapidly earlier, after the Slow Close piston contacts, promotes piston rod and is retracted in the Slow Close cylinder, and pressure spring also makes the back cavity medium get back to ante-chamber.Its media flow speed can be regulated by needle-valve.After the setting, the protection bolt of screwing on prevents foreign material and other medium corrosion needle-valves.
Two left semicircle shape valve plates of this valve and right semicircular valve plate rely on the gravity automatic closing, similar form relies on the safety check that torsion spring is closed in traditional relatively pipe network system, performance is more reliable, by add a flanged (FLGD) valve body at outlet end, can make this valve be applied to pipe network system.
In sum, adopt the double-plate slow-shut check valve of technique scheme, because left semicircle shape valve plate and right semicircular valve plate are the door hinge state to be positioned to be provided with on the valve shaft of tilting backward 2-30 ° acute angle with the water-in flange face, two semicircle valve plates rely on the gravity automatic closing, reached stable performance, current are the divergence expression outflow performance that flow is big, resistance to water-flow is little during unlatching; And the side at valve body is equipped with the Slow Close parts at least, and no matter which kind of situation is closed valve, and valve plate is Slow Close behind the first quick closing valve, realizes eliminating destructive water hammer and reaches and close the little performance of the sound.This double-plate slow-shut check valve has that water flow is big, resistance to water-flow is little, the non-return of realizing damming, eliminates water hammer, closes the feature that automation control requires in functional adaptation water pump irrigation and drainage system outlets such as the sound is little and the pipe network.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is along A-A line cut-away view among Fig. 1;
Fig. 3 is along B-B line cut-away view among Fig. 1;
Fig. 4 is that the present invention opens schematic representation;
Fig. 5 is a valve Slow Close block diagram;
Fig. 6 is the flanged (FLGD) valve body schematic top plan view of this valve;
Fig. 7 is that the flanged (FLGD) valve body of valve is opened schematic representation.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, valve body 3 front end check mouths and water-in flange face are provided with tilting backward 2-30 ° acute angle, in valve body 3 front end check mouths, be provided with vertical beam 10, the one side of vertical beam 10 is in same plane with the check mouth, on vertical beam 10 and check choma face, be provided with the dovetail groove 4 that rubber seal is installed, a valve shaft parallel with the check mouth 5 is installed on the valve body 3 of dovetail groove 4 fronts, valve shaft 5 is sleeved in the last earhole 2 and following earhole 2.1 of valve body 3 front ends, fixing by the last bolt 1 and the following bolt 1.1 that are installed on the earhole, left semicircle shape valve plate 6 and right semicircular valve plate 11 are the door hinge state and are positioned on the valve shaft 5, and can rotate freely, back side at left semicircle shape valve plate 6 and right semicircular valve plate 11 is equipped with the convex edge 9 of making spacing usefulness, rotates greater than 90 ° from operating position to prevent left semicircle shape valve plate 6 and right semicircular valve plate 11.Two left semicircle shape valve plates 6 and right semicircular valve plate 11 form a full circle with valve body 3 entire front end check mouth closures when closing.Left semicircle shape valve plate 6 and right semicircular valve plate 11 and with the hinged place of valve shaft 5, be equipped with wear-resistant pad 7, with the rotation flexibility that improves left semicircle shape valve plate 6 and right semicircular valve plate 11 and valve working life.Valve body 3, left semicircle shape valve plate 6 and right semicircular valve plate 11 can adopt plastics or metal to make according to medium and pressure condition.
The destructive water hammer and the noise that produce when closing valve for eliminating, at least one side at valve body 3 is equipped with Slow Close parts 8, promptly these Slow Close parts 8 can be installed in valve body 3 one sides, one of them left semicircle shape valve plate 6 or right semicircular valve plate 11 are carried out Slow Close, also can 8 pairs two left semicircle shape valve plates 6 of Slow Close parts be installed respectively in the both sides of valve body 3 and right semicircular valve plate 11 carries out Slow Close respectively.The Slow Close parts are installed on the valve body 3 runners outside, and medium fluidised form in the interference tube does not help reducing the valve flow resistance.
Referring to Fig. 5; for mostly being submergence, adaptation irrigation and drainage pumping station outlet non-return flap goes out stream; Slow Close parts 8 are to be provided with Slow Close cylinder 8.3 and Slow Close cover 8.4 thereof on valve body 3 walls; end cap 8.5 and seal ring 8.2; in Slow Close cylinder 8.3, be provided with the piston rod 8.1 corresponding with left semicircle shape valve plate 6 or right semicircular valve plate 11; in Slow Close cylinder 8.3, be provided with the spring 8.6 that is between piston rod 8.1 and the end cap 8.5; on the wall of Slow Close cylinder 8.3, be provided with the fluid passage 8.10 that is communicated with rod chamber and rodless cavity; on valve body 3, be provided with the needle-valve 8.7 corresponding with fluid passage 8.10; on valve body 3, be provided with the protection bolt 8.9 corresponding, avoided external vitta structure and corrosion that produces and the drawback that increases leakage point with needle-valve 8.7.When valve was opened under hydraulic action, piston rod 8.1 was released under spring 8.6 effects, and medium flows into rodless cavity by fluid passage 8.10 in Slow Close cylinder 8.3 rod chambers.When closing valve, valve is closed rapidly earlier, after Slow Close piston rod 8.1 contacts, promotes piston rod 8.1 and is retracted in the Slow Close cylinder 8.3, and pressure spring 8.6 also makes the rodless cavity medium get back to rod chamber.Its media flow speed can be regulated by needle-valve 8.7.After the setting, the protection bolt 8.9 of screwing on prevents foreign material and other medium corrosion needle-valves 8.7.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, what can replenish is that the two left semicircle shape valve plates 6 and the right semicircular valve plate 11 of this valve relies on the gravity automatic closings, similar form relies on the safety check that torsion spring is closed in traditional relatively pipe network system, performance is more reliable, referring to Fig. 6 and Fig. 7, by add a flanged (FLGD) valve body 3.1 at outlet end, can make this valve be applied to pipe network system.
The principle explanation: this valve utilizes principle of hydrodynamics, makes valve open under hydraulic action; During termination of pumping, valve relies on the barodynamics principle, and valve plate is closed under action of gravity automatically; Soon close when putting in place, the Slow Close parts are realized the buffer function to valve plate by hydraulic principle.
In sum, the present invention be can realize that inflow-rate of water turbine is big, resistance to water-flow is little, to close the sound little, and have the feature that the Slow Close function can be eliminated destructive water hammer, both can be applicable to the double-plate slow-shut check valve that the irrigation and drainage pumping station pipe outlet also can be installed on common pipe network system.
Claims (4)
1. double-plate slow-shut check valve; include valve body (3); described valve body (3) front end check mouth and water-in flange face are provided with tilting backward 2-30 ° acute angle; in described valve body (3) front end check mouth, be provided with vertical beam (10); the front and the check mouth of described vertical beam (10) are in same plane; on described vertical beam (10) and check choma face, be provided with dovetail groove (4); the part that valve body (3) is gone up in described dovetail groove (4) front is equipped with a valve shaft parallel with the check mouth (5); left semicircle shape valve plate (6) and right semicircular valve plate (11) are the door hinge state and are positioned on the described valve shaft (5); be equipped with wear-resistant pad (7) at described left semicircle shape valve plate (6) and right semicircular valve plate (11) and with the hinged place of described valve shaft (5); it is characterized in that: at least one side at described valve body (3) is equipped with Slow Close parts (8) corresponding with described left semicircle shape valve plate (6) or right semicircular valve plate (11); described Slow Close parts (8) are to be provided with Slow Close cylinder (8.3) and Slow Close cover (8.4) and end cap (8.5) on described valve body (3); in described Slow Close cylinder (8.3), be provided with the piston rod (8.1) corresponding with described left semicircle shape valve plate (6) or right semicircular valve plate (11); in described Slow Close cylinder (8.3), be provided with the spring (8.6) that is between described piston rod (8.1) and the end cap (8.5); on described Slow Close cylinder (8.3) wall, be provided with the fluid passage (8.10) that is communicated with rod chamber and rodless cavity; on described valve body (3), be provided with the needle-valve (8.7) corresponding, on described valve body (3), be provided with the protection bolt (8.9) corresponding with described needle-valve (8.7) with described fluid passage (8.10).
2. double-plate slow-shut check valve according to claim 1 is characterized in that: described Slow Close parts (8) are installed on described valve body (3) the runner outside.
3. double-plate slow-shut check valve according to claim 1 and 2 is characterized in that: be provided with a flange at described valve body (3) outlet end.
4. double-plate slow-shut check valve according to claim 1 and 2 is characterized in that: the back side at described left semicircle shape valve plate (6) or right semicircular valve plate (11) is provided with the convex edge (9) of making spacing usefulness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100428418A CN101520101B (en) | 2009-03-11 | 2009-03-11 | Double-plate slow-shut check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100428418A CN101520101B (en) | 2009-03-11 | 2009-03-11 | Double-plate slow-shut check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101520101A CN101520101A (en) | 2009-09-02 |
| CN101520101B true CN101520101B (en) | 2011-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100428418A Expired - Fee Related CN101520101B (en) | 2009-03-11 | 2009-03-11 | Double-plate slow-shut check valve |
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| Country | Link |
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| CN (1) | CN101520101B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936413B (en) * | 2010-08-09 | 2012-04-25 | 安徽铜都阀门股份有限公司 | Hydraulic self-control bevel-seat type micro-resistance slow-closing non-return valve |
| CN103090060B (en) * | 2011-11-08 | 2014-10-15 | 安徽铜都阀门股份有限公司 | Novel butterfly type microresistance slow closing check valve |
| CN102818051A (en) * | 2012-09-05 | 2012-12-12 | 浙江超达阀门股份有限公司 | Check valve capable of reducing pressure of water hammer |
| CN105179756A (en) * | 2015-08-18 | 2015-12-23 | 中节能先导城市节能有限公司 | Double-tilting-clack side-dump type energy-saving check valve |
| CN110594457B (en) * | 2019-09-11 | 2024-04-23 | 上海科科阀门集团有限公司 | High-pressure large-caliber energy-saving double-plate check valve |
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2009
- 2009-03-11 CN CN2009100428418A patent/CN101520101B/en not_active Expired - Fee Related
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| CN101520101A (en) | 2009-09-02 |
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Granted publication date: 20110420 |
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