CN203614481U - Stacked liquid-control unidirectional valve - Google Patents
Stacked liquid-control unidirectional valve Download PDFInfo
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- CN203614481U CN203614481U CN201320632488.0U CN201320632488U CN203614481U CN 203614481 U CN203614481 U CN 203614481U CN 201320632488 U CN201320632488 U CN 201320632488U CN 203614481 U CN203614481 U CN 203614481U
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- valve body
- piston
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- oil inlet
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- 239000007788 liquid Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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Abstract
The utility model discloses a stacked liquid-control unidirectional valve. The stacked liquid-control unidirectional valve comprises a valve body, a left ball valve, a right ball valve and a piston, wherein the left ball valve and the right ball valve are arranged on two inner sides of the valve body, the piston is arranged in the middle part of the valve body, the valve body is provided with an oil inlet hole and an oil outlet hole, and the oil inlet hole and the oil outlet hole are communicated with an inner cavity of the valve body; the left side and the right side of the piston are symmetrically provided with a piston rod, the left end and the right end of each piston are respectively provided with a rubber block, and the end, away from the piston, of each rubber block is a sunken spherical surface. When in use, the stacked liquid-control unidirectional valve is provided with the rubber blocks, the end, away from the piston, of each rubber block is the sunken spherical surface, when the spherical surfaces are pressed by the liquid, horizontal pressure is simultaneously applied to the spherical surfaces, and the rubber blocks can be squeezed so as to compress the valve body, so that the rubber block and the valve body can be adequately sealed.
Description
Technical field
The utility model relates to a kind of one-way valve, relates in particular to a kind of stacking type hydraulic control check valve.
Background technique
One-way valve claims again safety check or check valve.Prevent oil stream reverse flow for hydraulic system, or prevent pressurized air reverse flow for pneumatic system.One-way valve has two kinds of straight-through type and right-angle types.Straight check valve is arranged on pipeline with being threaded.Angle check valve is threaded, board-like connection is connected three kinds of forms with flange.Pilot operated check valve also claims blocking-valve or pressure retaining valve, and it is identical with one-way valve, in order to prevent fluid reverse flow.But need oil stream reverse flow in oil hydraulic circuit time, can utilize again control oil pressure, open one-way valve, oil stream all can be flowed at both direction.Pilot operated check valve adopts taper valve core, therefore good seal performance.In the time requiring closing oil path, available this valve plays pressure maintaining effect as the one-way locking of oil circuit.The leakage way of Pilot operated check valve control oil has internal drainage type and two kinds of the formulas of leaking.Available internal drainage type in oil stream oppositely exports the oil circuit without back pressure; Otherwise need be by the formula of leaking, to reduce control-oil pressure.For example CN200710047982.X discloses a kind of stacking type hydraulic control check valve, comprises valve body, is positioned at the spool of valve body main aperture, in the middle of valve body, has a main aperture, has oil inlet and outlet above, has two turnover oilholes below.Make four runners at valve inner by running casting method, oil inlet and outlet and turnover oilhole are met with main aperture respectively.Valve body left end and right-hand member respectively have one group of non-return device, control upper and lower cavity whether connect by the switching of non-return device.Cartridge spool in the middle of valve body main aperture, spool left and right respectively fills a valve seat with seal ring, and valve base cavity is placed a cone valve; Spring seat is placed in ending cover hole, and one end of spring is placed on the step of cone valve afterbody, and the other end is placed on spring seat, and spring force is positioned at spring seat in ending cover hole; End cap uses and is threaded with valve body, guarantees that by seal ring and back-up ring pressure oil does not leak.When arbitrary chamber fuel feeding wherein can be realized the communication in another chamber.
For another example CN200720007182.0 discloses a kind of stacking type hydraulic control check valve, comprise valve body, be located at both sides in valve body left and right two ball valves, be located at the piston at valve body middle part, described valve body is provided with oil inlet hole, oil outlet, described oil inlet hole and oil outlet and body cavity meet, described piston is split type, formed by left and right two-part, described two Split pistons act on respectively left and right two ball valves, between described two Split pistons, be provided with external control oilhole, the closed cavity between described external control oilhole and two Split pistons communicates.But, above-mentioned stacking type hydraulic control check valve of the prior art, the piston at valve body middle part is in long to-and-fro motion, cannot guarantee the sealing that it is intact, easily there is the phenomenon of leakage, liquid is interconnected in the two ball valve place cavitys of left and right, causes scrapping of stacking type hydraulic control check valve.
Model utility content
The technical problems to be solved in the utility model is to provide one and avoids defect of the prior art, can effectively guarantee the stacking type hydraulic control check valve of the sealing of piston.
For addressing the above problem, a kind of stacking type hydraulic control check valve of the present utility model, comprise valve body, be located at both sides in valve body left and right two ball valves, be located at the piston at valve body middle part, described valve body is provided with oil inlet hole, oil outlet, described oil inlet hole and oil outlet communicate with body cavity; The left and right sides of described piston is symmetrically arranged with piston rod, and the two ends, left and right of piston are respectively arranged with block rubber, and described block rubber is the spherical of depression away from the end face of piston.
Described left and right two ball valves are connected with valve body screw thread respectively.
Stacking type hydraulic control check valve of the present utility model, compared with prior art, can effectively increase the service life, avoid spool in long-time use because friction is damaged, thereby cause the phenomenon of leakage.In use, owing to being provided with block rubber, and, described block rubber is the spherical of depression away from the end face of piston, and liquid, in the time of extruding spherical, can be given the pressure of spherical level simultaneously, also can push block rubber simultaneously and compress valve body, block rubber and valve body are fully sealed between the two.The utility model is simple in structure, is at utmost keeping on the basis of original structure, only needs the partial structurtes that change piston to realize, produces comparatively simple, without the extra production mould of independent increase in addition, cost-saving.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of piston in the utility model.
Embodiment
In order to make those skilled in the art person understand better technical solutions of the utility model, below in conjunction with drawings and embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of stacking type hydraulic control check valve of the present utility model, comprise valve body 1, be located at left and right two ball valves 2,3 of valve body 1 interior both sides, be located at the piston 4 at valve body 1 middle part, described valve body 1 is provided with oil inlet hole 5,6, oil outlet 7,8, and described oil inlet hole 5,6 and oil outlet 7,8 communicate with valve body 1 inner chamber; The left and right sides of described piston 4 is symmetrically arranged with piston rod 9, and the two ends, left and right of piston 4 are respectively arranged with block rubber 10, and described block rubber 10 is the spherical 11 of depression away from the end face of piston 4.
For guaranteeing the sealing between ball valve and valve body, described left and right two ball valves are connected with valve body screw thread respectively.
Stacking type hydraulic control check valve of the present utility model, compared with prior art, can effectively increase the service life, avoid spool in long-time use because friction is damaged, thereby cause the phenomenon of leakage.In use, owing to being provided with block rubber, and, described block rubber is the spherical of depression away from the end face of piston, and liquid, in the time of extruding spherical, can be given the pressure of spherical level simultaneously, also can push block rubber simultaneously and compress valve body, block rubber and valve body are fully sealed between the two.
The utility model is simple in structure, is at utmost keeping on the basis of original structure, only needs the partial structurtes that change piston to realize, produces comparatively simple, without the extra production mould of independent increase in addition, cost-saving.
Claims (2)
1. a stacking type hydraulic control check valve, is characterized in that: comprise valve body, be located at both sides in valve body left and right two ball valves, be located at the piston at valve body middle part, described valve body is provided with oil inlet hole, oil outlet, described oil inlet hole and oil outlet communicate with body cavity; The left and right sides of described piston is symmetrically arranged with piston rod, and the two ends, left and right of piston are respectively arranged with block rubber, and described block rubber is the spherical of depression away from the end face of piston.
2. stacking type hydraulic control check valve as claimed in claim 1, is characterized in that: described left and right two ball valves are connected with valve body screw thread respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320632488.0U CN203614481U (en) | 2013-10-14 | 2013-10-14 | Stacked liquid-control unidirectional valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320632488.0U CN203614481U (en) | 2013-10-14 | 2013-10-14 | Stacked liquid-control unidirectional valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614481U true CN203614481U (en) | 2014-05-28 |
Family
ID=50767130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320632488.0U Expired - Fee Related CN203614481U (en) | 2013-10-14 | 2013-10-14 | Stacked liquid-control unidirectional valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614481U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757032A (en) * | 2015-12-15 | 2016-07-13 | 重庆川仪自动化股份有限公司 | Flow rate pairing valve and electrohydraulic actuating mechanism adopting same |
| CN107795451A (en) * | 2017-11-29 | 2018-03-13 | 欧盾科技有限公司 | Integrated high pressure oil pump |
| CN111609182A (en) * | 2019-02-25 | 2020-09-01 | 江门市新会区进宾科技有限公司 | A superimposed hydraulic control check valve |
-
2013
- 2013-10-14 CN CN201320632488.0U patent/CN203614481U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757032A (en) * | 2015-12-15 | 2016-07-13 | 重庆川仪自动化股份有限公司 | Flow rate pairing valve and electrohydraulic actuating mechanism adopting same |
| CN105757032B (en) * | 2015-12-15 | 2017-12-26 | 重庆川仪自动化股份有限公司 | Flow matches valve and the electrohydraulic actuator using flow pairing valve |
| CN107795451A (en) * | 2017-11-29 | 2018-03-13 | 欧盾科技有限公司 | Integrated high pressure oil pump |
| CN111609182A (en) * | 2019-02-25 | 2020-09-01 | 江门市新会区进宾科技有限公司 | A superimposed hydraulic control check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |