CN102588376A - Hydraulic control one-way valve with unloading valve core - Google Patents
Hydraulic control one-way valve with unloading valve core Download PDFInfo
- Publication number
- CN102588376A CN102588376A CN2012100634281A CN201210063428A CN102588376A CN 102588376 A CN102588376 A CN 102588376A CN 2012100634281 A CN2012100634281 A CN 2012100634281A CN 201210063428 A CN201210063428 A CN 201210063428A CN 102588376 A CN102588376 A CN 102588376A
- Authority
- CN
- China
- Prior art keywords
- valve core
- spring
- load
- valve
- hydraulic control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic control one-way valve with an unloading valve core, which comprises a valve body, a control piston, a push rod, a valve core, a spring seat, a spring and the unloading valve core. The control piston is connected with the push rod; the unloading valve core is arranged in the valve core; the unloading valve core is connected with the spring seat; and one end of the spring is fixedly connected with the top part of the valve body, while the other point of the spring is connected with the spring seat. With the adoption of the hydraulic control one-way valve with the unloading valve core, the impact force generated by suddenly releasing the pressure of the oil liquid in a high-pressure closed loop can be reduced, so that the hydraulic control one-way valve with the unloading valve core is convenient to operate.
Description
Technical field
The present invention relates to a kind of Pilot operated check valve with the off-load valve core.
Background technique
At present, the one-way valve of being sold on the market exists mostly and all has the excessive and stubborn phenomenon of pressure chamber pressure mostly.
Summary of the invention
Goal of the invention: the objective of the invention is in order to solve the deficiency of existing technology, the Pilot operated check valve of band off-load valve core is provided.
Technological scheme: in order to realize above purpose, a kind of Pilot operated check valve with the off-load valve core of the present invention comprises valve body, control piston; Push rod, valve core, spring seat, spring; The off-load valve core, described control piston is connected with push rod, and described off-load valve core is located in the valve core; Described off-load valve core is connected with spring seat, and described spring one end is connected with the valve body roof anchorage, and another point is connected with spring seat.
For the off-load valve core can play the effect prior to the valve core off-load, described off-load spool bottom protrudes in the valve core bottom.
Beneficial effect: the pressure that a kind of Pilot operated check valve with the off-load valve core provided by the invention can reduce high pressure loop inner fluid discharges and the impact force of generation easy-to-operat suddenly.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Wherein: 1. valve body, 2. control piston, 3. push rod, 4. spool, 5. spring seat, 6. spring, 7. off-load spool.
Embodiment
Further illustrate the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of Pilot operated check valve with the off-load valve core comprises valve body, control piston; Push rod, valve core, spring seat, spring; The off-load valve core, described control piston is connected with push rod, and described off-load valve core is located in the valve core; Described off-load valve core is connected with spring seat, and described spring one end is connected with the valve body roof anchorage, and another point is connected with spring seat.
When control port K did not have pressure oil and feeds, pressure oil can only enter the mouth from the passway and 8 flow to port outlet 9, can not oppositely flow backwards.When control port K fed pressure oil, control piston 2 backed down valve core 4, made port inlet 8 and port outlet 9 connect, thereby realized reverse circulated.When outlet 9 place's tank pressures were higher, pushing valve core 4 needed pilot pressures open need be higher, at this moment; Control piston 2 is pushed off-load valve core 7 earlier open, makes the breach of fluid on off-load valve core 7 of upper and lower cavity be communicated with, and lets out under the pressure oil of outlet 9; Pressure reduces, and at this moment, control piston 2 just can be with the less valve core 4 of trying hard to recommend out; Make inlet 8, outlet 9 is connected.
The foregoing description only is explanation technical conceive of the present invention and characteristics, its objective is to let to be familiar with these those skilled in the art and can to understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalents that spirit has been done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (2)
1. the Pilot operated check valve with the off-load valve core comprises valve body (1), control piston (2), push rod (3); Valve core (4), spring seat (5), spring (6); Off-load valve core (7), described control piston (2) is connected with push rod (3), and described off-load valve core (7) is located in the valve core (4); Described off-load valve core (7) is connected with spring seat (5), and described spring (6) one ends are connected with valve body (1) roof anchorage, and another point is connected with spring seat (5).
2. a kind of Pilot operated check valve with the off-load valve core according to claim 1 is characterized in that: described off-load spool (6) bottom protrudes in valve core (3) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100634281A CN102588376A (en) | 2012-03-12 | 2012-03-12 | Hydraulic control one-way valve with unloading valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100634281A CN102588376A (en) | 2012-03-12 | 2012-03-12 | Hydraulic control one-way valve with unloading valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102588376A true CN102588376A (en) | 2012-07-18 |
Family
ID=46477475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100634281A Pending CN102588376A (en) | 2012-03-12 | 2012-03-12 | Hydraulic control one-way valve with unloading valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102588376A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470564A (en) * | 2013-09-22 | 2013-12-25 | 太仓康茂电子有限公司 | Pilot-operated check valve |
| CN104791317A (en) * | 2015-03-16 | 2015-07-22 | 常州市福记机械有限公司 | Hydraulic control valve and hydraulic control one-way valve |
| CN106286456A (en) * | 2016-10-26 | 2017-01-04 | 燕山大学 | A kind of hydraulic control one-way valve |
| CN109973456A (en) * | 2019-04-16 | 2019-07-05 | 武汉科技大学 | A kind of automatically controlled high pressure check valve of combined type |
-
2012
- 2012-03-12 CN CN2012100634281A patent/CN102588376A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470564A (en) * | 2013-09-22 | 2013-12-25 | 太仓康茂电子有限公司 | Pilot-operated check valve |
| CN104791317A (en) * | 2015-03-16 | 2015-07-22 | 常州市福记机械有限公司 | Hydraulic control valve and hydraulic control one-way valve |
| CN106286456A (en) * | 2016-10-26 | 2017-01-04 | 燕山大学 | A kind of hydraulic control one-way valve |
| CN109973456A (en) * | 2019-04-16 | 2019-07-05 | 武汉科技大学 | A kind of automatically controlled high pressure check valve of combined type |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102878136B (en) | Screw-in cartridge valve | |
| WO2011040808A3 (en) | Adjustable shock absorber | |
| CN102588376A (en) | Hydraulic control one-way valve with unloading valve core | |
| CN104214147A (en) | Sudden-changing load energy absorption device of shield propelling hydraulic system | |
| CN201525715U (en) | Crawler crane anti-back-tilting hydraulic system with function of switching high and low voltage | |
| CN204344557U (en) | A kind of ultrahigh pressure pilot operated compound relief valve | |
| CN202520679U (en) | Hydraulic control one-way valve with unloading valve core | |
| CN202718955U (en) | Buffering oil cylinder | |
| CN201599411U (en) | Nuclear-grade multistage pressure-reducing regulation valve | |
| CN104564871A (en) | Low-pressure-loss overlapped type hydraulic one-way valve | |
| CN102501844A (en) | Hydraulic braking control device | |
| CN106438542B (en) | relief valve | |
| CN202392214U (en) | Piston-type cavitation-preventing adjustable reducing valve with large pressure difference | |
| CN106523474B (en) | relief valve | |
| CN202868012U (en) | Heavy-caliber trace vent valve with pressure | |
| CN203655751U (en) | Hydraulic control one-way valve | |
| CN208252908U (en) | A kind of pilot-operated type unloading overflow valve | |
| CN208982385U (en) | Energy-saving and high efficient car unloader hydraulic control system | |
| CN101634367A (en) | Pilot-operated high-pressure stop valve | |
| CN202215521U (en) | Plug-in type one-way lock | |
| CN202833004U (en) | Manual hydraulic pump | |
| CN104948769A (en) | Cartridge valve and control method | |
| CN103470564A (en) | Pilot-operated check valve | |
| CN204851836U (en) | Bull -dozer spiller extreme position is with slope protection hydraulic system | |
| CN109723695A (en) | A kind of extra-high pressure unloading valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120718 |