CN204004614U - A kind of compound Pilot operated check valve - Google Patents
A kind of compound Pilot operated check valve Download PDFInfo
- Publication number
- CN204004614U CN204004614U CN201420313166.4U CN201420313166U CN204004614U CN 204004614 U CN204004614 U CN 204004614U CN 201420313166 U CN201420313166 U CN 201420313166U CN 204004614 U CN204004614 U CN 204004614U
- Authority
- CN
- China
- Prior art keywords
- push rod
- pilot operated
- valve
- operated check
- unloading spool
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of compound Pilot operated check valve, comprise valve body and main valve plug, it is characterized in that: in valve body, be provided with valve pocket, in valve pocket, be provided with main valve plug, in main valve plug, be provided with the spring being connected with valve body top, in main valve plug lower end, be provided with axial aperture, on the cylindrical of main valve plug, be provided with the radial hole connecting with axial aperture, axial aperture is sealed by unloading spool push rod, in unloading spool push rod upper end, be provided with unloading spool, in valve body bottom, be provided with and control mouth, in the valve pocket of control mouthful upper end, be provided with piston, in piston upper end, be connected with push rod, push rod can promote to move on unloading spool push rod.The utility model has solved one-way valve can only one-way flow, cannot realize more stable reverse flow, use function singleness, and easily damage, the problem that working life is shorter, provides a kind of simple in structure, easy to use, can realize two-way flow by fast and stable, and be not easy to damage, the compound Pilot operated check valve that working life is long.
Description
Technical field
The utility model relates to a kind of one-way valve, particularly relates to a kind of compound Pilot operated check valve.
Background technique
One-way valve claims again safety check or check valve.For hydraulic system, prevent oil stream reverse flow, or prevent pressurized air reverse flow for pneumatic system.Current one-way valve can only one-way flow, cannot realize more stable reverse flow, uses function singleness, and complex structure, and usage safety performance is lower, easily damages, and working life is shorter.
Model utility content
Can only one-way flow in order to solve in prior art one-way valve, cannot realize more stable reverse flow, use function singleness, and complex structure, usage safety performance is lower, easily damage, the problem that working life is shorter, it is a kind of simple in structure that the utility model provides, easy to use, can realize two-way flow by fast and stable, and be not easy to damage, the compound Pilot operated check valve that working life is long.
In order to address the above problem, technical solution adopted in the utility model is:
A kind of compound Pilot operated check valve, comprise valve body and main valve plug, it is characterized in that: also comprise piston, push rod, unloading spool, unloading spool push rod and spring, in valve body, be provided with valve pocket, in valve pocket, be provided with main valve plug, in described main valve plug, be provided with the spring being connected with valve body top, in main valve plug lower end, be provided with axial aperture, on the cylindrical of main valve plug, be provided with the radial hole connecting with axial aperture, described axial aperture is sealed by unloading spool push rod, in unloading spool push rod upper end, be provided with unloading spool, in valve body both sides, be respectively arranged with the first hydraulic fluid port and the second hydraulic fluid port, in valve body bottom, be provided with and control mouth, in the valve pocket of described control mouthful upper end, be provided with piston, in piston upper end, be connected with push rod, described push rod can promote to move on unloading spool push rod.
Aforesaid a kind of compound Pilot operated check valve, is characterized in that: described the first hydraulic fluid port and the second hydraulic fluid port are symmetrical arranged, and two hydraulic fluid port caliber size are identical.
Aforesaid a kind of compound Pilot operated check valve, is characterized in that: the described bore of controlling mouth is less than the bore of the first hydraulic fluid port.
Aforesaid a kind of compound Pilot operated check valve, is characterized in that: described unloading spool push rod adopts stainless steel material to make.
Aforesaid a kind of compound Pilot operated check valve, is characterized in that: the aperture of described radial hole is less than the aperture of axial aperture.
Aforesaid a kind of compound Pilot operated check valve, is characterized in that: described piston adopts all-aluminium piston.
The beneficial effects of the utility model are: the compound Pilot operated check valve of the utility model, simple in structure, use safety and stability, working life is longer, can realize fluid two-way flow, uses diverse in function, and because the control area of unloading spool is less, only need less power can back down unloading spool, greatly reduce reverse unlatching required pilot pressure, compound Pilot operated check valve is specially adapted to use in high-pressure high flux hydraulic power system.
Accompanying drawing explanation
Fig. 1 is the compound hydraulic control one-way valve structures of the utility model schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, a kind of compound Pilot operated check valve, comprise valve body 1, main valve plug 2, piston 3, push rod 4, unloading spool 5, unloading spool push rod 6 and spring 7 are provided with valve pocket in valve body 1, are provided with main valve plug 2 in valve pocket, in described main valve plug 2, be provided with the spring 7 being connected with valve body 1 top, in main valve plug 2 lower ends, be provided with axial aperture, be provided with the radial hole connecting with axial aperture on the cylindrical of main valve plug 2, the aperture of described radial hole is less than the aperture of axial aperture.Described axial aperture is by 6 sealings of unloading spool push rod, in unloading spool push rod 6 upper ends, be provided with unloading spool 5, in valve body 1 both sides, be respectively arranged with the first hydraulic fluid port 8 and the second hydraulic fluid port 9, in valve body 1 bottom, be provided with and control mouth 10, in the valve pocket of described control mouthful 10 upper ends, be provided with piston 3, in piston 3 upper ends, be connected with push rod 4, described push rod 4 can promote to move on unloading spool push rod 6.Described the first hydraulic fluid port 8 and the second hydraulic fluid port 9 are symmetrical arranged, and two hydraulic fluid port caliber size are identical.The described bore of controlling mouth 10 is less than the bore of the first hydraulic fluid port 8.Described unloading spool push rod 6 adopts stainless steel material to make, and intensity is high, long service life.Described piston 3 adopts all-aluminium piston.
The compound Pilot operated check valve of the utility model, has an axial aperture in main valve plug 2 lower ends, and axial aperture is by 6 sealings of unloading spool push rod.When the high-voltage oil liquid of the second hydraulic fluid port 9 needs reverse flow to cross 8 mouthfuls of the first hydraulic fluid ports, enter control mouthfuls 10 pressure oil by piston 3 by unloading spool push rod 6 and the unloading spool 5 less distance of jack-up one upwards, make that the high pressure oil of the second hydraulic fluid port 9 is instantaneous flows out from radial hole and the annulus between axial bore and unloading spool push rod 6 lower ends of main valve plug 2, the pressure of the second hydraulic fluid port 9 declines immediately, realizes pressure release; Then, main valve plug 2 is backed down by piston 1, and reverse fluid is flow through smoothly.
In sum, the compound Pilot operated check valve of the utility model, simple in structure, use safety and stability, working life is longer, can realize fluid two-way flow, use diverse in function, and because the control area of unloading spool is less, only need less power can back down unloading spool, greatly reduce reverse unlatching required pilot pressure, compound Pilot operated check valve is specially adapted to use in high-pressure high flux hydraulic power system.
More than show and described basic principle of the present utility model, major character and advantage.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. a compound Pilot operated check valve, comprise valve body and main valve plug, it is characterized in that: also comprise piston, push rod, unloading spool, unloading spool push rod and spring, in valve body, be provided with valve pocket, in valve pocket, be provided with main valve plug, in described main valve plug, be provided with the spring being connected with valve body top, in main valve plug lower end, be provided with axial aperture, on the cylindrical of main valve plug, be provided with the radial hole connecting with axial aperture, described axial aperture is sealed by unloading spool push rod, in unloading spool push rod upper end, be provided with unloading spool, in valve body both sides, be respectively arranged with the first hydraulic fluid port and the second hydraulic fluid port, in valve body bottom, be provided with and control mouth, in the valve pocket of described control mouthful upper end, be provided with piston, in piston upper end, be connected with push rod, described push rod can promote to move on unloading spool push rod.
2. a kind of compound Pilot operated check valve according to claim 1, it is characterized in that: described the first hydraulic fluid port and the second hydraulic fluid port are symmetrical arranged, and two hydraulic fluid port caliber size is identical.
3. a kind of compound Pilot operated check valve according to claim 2, is characterized in that: the described bore of controlling mouth is less than the bore of the first hydraulic fluid port.
4. a kind of compound Pilot operated check valve according to claim 3, is characterized in that: described unloading spool push rod adopts stainless steel material to make.
5. a kind of compound Pilot operated check valve according to claim 4, is characterized in that: the aperture of described radial hole is less than the aperture of axial aperture.
6. a kind of compound Pilot operated check valve according to claim 5, is characterized in that: described piston adopts all-aluminium piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313166.4U CN204004614U (en) | 2014-06-13 | 2014-06-13 | A kind of compound Pilot operated check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420313166.4U CN204004614U (en) | 2014-06-13 | 2014-06-13 | A kind of compound Pilot operated check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004614U true CN204004614U (en) | 2014-12-10 |
Family
ID=52044617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420313166.4U Expired - Fee Related CN204004614U (en) | 2014-06-13 | 2014-06-13 | A kind of compound Pilot operated check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204004614U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061346A (en) * | 2014-06-13 | 2014-09-24 | 苏州华徕光电仪器有限公司 | Duplex type hydraulic control one-way valve |
| CN105156389A (en) * | 2015-09-06 | 2015-12-16 | 哈尔滨工业大学 | Two-way safety valve |
| CN105402449A (en) * | 2015-12-25 | 2016-03-16 | 江苏恒立液压有限公司 | Hydraulically-controlled check valve |
| CN106090357A (en) * | 2015-05-01 | 2016-11-09 | 艾默生过程管理调节技术公司 | There is the embedded maintainable stop valve of overflow |
-
2014
- 2014-06-13 CN CN201420313166.4U patent/CN204004614U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061346A (en) * | 2014-06-13 | 2014-09-24 | 苏州华徕光电仪器有限公司 | Duplex type hydraulic control one-way valve |
| CN106090357A (en) * | 2015-05-01 | 2016-11-09 | 艾默生过程管理调节技术公司 | There is the embedded maintainable stop valve of overflow |
| CN106090357B (en) * | 2015-05-01 | 2021-03-12 | 艾默生过程管理调节技术公司 | Embedded serviceable shut-off valve with overflow |
| CN105156389A (en) * | 2015-09-06 | 2015-12-16 | 哈尔滨工业大学 | Two-way safety valve |
| CN105156389B (en) * | 2015-09-06 | 2017-03-15 | 哈尔滨工业大学 | A kind of bidirectional relief valve |
| CN105402449A (en) * | 2015-12-25 | 2016-03-16 | 江苏恒立液压有限公司 | Hydraulically-controlled check valve |
| CN105402449B (en) * | 2015-12-25 | 2018-01-23 | 江苏恒立液压科技有限公司 | Hydraulic control one-way 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20160613 |