CN206802455U - A kind of unloading valve mechanical pilot valves - Google Patents
A kind of unloading valve mechanical pilot valves Download PDFInfo
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- CN206802455U CN206802455U CN201720580007.4U CN201720580007U CN206802455U CN 206802455 U CN206802455 U CN 206802455U CN 201720580007 U CN201720580007 U CN 201720580007U CN 206802455 U CN206802455 U CN 206802455U
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Abstract
A kind of unloading valve mechanical pilot valves, including guide valve blocks, system pressure mouth, oil supply pressure mouth and return hydraulic coupling mouth are provided with the guide valve blocks；Include valve element and valve seat in the guide valve blocks, the housing of the valve element, valve seat and guide valve blocks forms the first hydraulic cavities I, and the first hydraulic cavities I is connected with the oil supply pressure mouth；Swivel nut is included in the guide valve blocks, control push rod is installed in the swivel nut；Control push rod and the swivel nut form the second hydraulic cavities II, and the two the first hydraulic cavities II is connected with the system pressure mouth；The control push rod and the valve element are positioned opposite, and the region between the control push rod and the valve element forms the 3rd hydraulic cavities III, and the 3rd hydraulic cavities III is connected with the return hydraulic coupling mouth.The present invention is simple in construction, and using mechanical structure, fault rate is low, good seal performance, and be particularly suitable for use in underground emulsion environment.
Description
Technical field
The present invention relates to a kind of mechanical pilot valves, more particularly to a kind of unloading valve for underground emulsion is with mechanical guide
Valve.
Background technology
In hydraulic system, for the output pressure of hydraulic pump is adjusted and controlled, generally there are three kinds of modes：Overflow
Control, overflow unloading control and Ioad-sensing control, and take main and pilot structure mostly.Overflow unloading control it is basic
Thought is：Unloading valve is configured in hydraulic system, when system pressure reaches setting pressure, hydraulic power source automatic deloading, reduces energy
Consumption；When system pressure, which reduces, arrives a certain scope, under the control of unloading valve, hydraulic power source Automatic-boosting is until system pressure reaches
Set pressure.
In actual applications, the reaction speed of system can be improved using pilot valve control unloading valve, therefore with pilot valve
Unloading valve be very common, difference is that the structure and installation site of guide structure.
2011200222507 disclose a kind of unloading valve pilot mechanism；In this scenario, pilot section is carried for afterbody and led
To the structure of relief valve of post, after system pressure reaches setting value, overflow valve is opened, the damping hole for coordinating unloading valve core position to set
Automatic-boosting, the unloading function of hydraulic power source are realized, but overflow valve is passed through according to its design feature, the setting of supercharging-off-load scope
Matching with off-load valve element damping hole realizes, not enough intuitively, is difficult to calculate and determines；Pilot section exists to unloading valve core segment
Rely on, it is difficult to which the functional unit independent as one uses.
2010101797215 disclose a kind of electromagnetic unloading valve of emulsion pump, wherein including a pilot valve：System pressure
After power reaches setting value, the overflow valve being made up of Ceramic Balls and ball seat first turns on, and then realizes supercharging, unloading function；The party
Case structure composition is complicated, assembling is not easy, and fault rate is higher during use, it is difficult to meets the needs of underground.
Therefore, a kind of simple in construction, willing supercharging unloading integrated valve is badly in need of in this area.
The content of the invention
The present invention proposes a kind of unloading valve mechanical pilot valves, including guide valve blocks, is provided with the guide valve blocks and is
System pressure port, oil supply pressure mouth and return hydraulic coupling mouth；Include valve element and valve seat in the guide valve blocks, the valve element, valve seat and
The housings of guide valve blocks forms the first hydraulic cavities I, and the first hydraulic cavities I is connected with the oil supply pressure mouth；The guide
Swivel nut is included in valve body, control push rod is installed in the swivel nut；The control push rod forms the second hydraulic cavities with the swivel nut
II, the second hydraulic cavities II are connected with the system pressure mouth；The control push rod and the valve element are positioned opposite, described
The region between push rod and the valve element is controlled to form the 3rd hydraulic cavities III, the 3rd hydraulic cavities III and the return hydraulic coupling
Mouth is connected.Affiliated guide valve blocks also include pressure spring component, carry out pressure setting.
Supercharging-unloading pressure scope can be predefined by the sealing relationship of the guide valve blocks, valve element and valve seat, independent of
The element of feather valve primary portion, corresponding valve port are directly connected to, and mechanical pilot valves are relatively independent, and adaptability is good；Institute
State control push rod to be engaged with the pressure spring regulation component, control unlatching and the closing motion of the valve element and valve seat, enter
And Automatic-boosting-unloading function is realized, independent of flooding process, seal request is reduced, structure is simplified, it is easy to accomplish,
Automatic-boosting, automatic deloading control can be effectively carried out to hydraulic power source, is particularly suitable for use in the emulsion system of underground.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of unloading valve pilot valve of the present invention,
Accompanying drawing 2 is the hydraulic pressure function figure of unloading valve pilot valve of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Referring to accompanying drawing 1, it is a preferred embodiment of unloading valve mechanical pilot valves of the present invention, can be with feather valve
Primary portion be used cooperatively, be a kind of purely mechanic pilot valve, the action for pilot control emulsion pump and workpiece.
Unloading valve mechanical pilot valves include guide valve blocks, and system pressure mouth 2, oil supply pressure mouth 1 are provided with guide valve blocks and returns liquid
Pressure port 3, it is connected respectively with the corresponding pressure mouth of feather valve primary portion；Valve element 5 and valve seat 6, valve are included in guide valve blocks
Region between core 5, guide valve blocks, the three of valve seat 6 forms the first hydraulic cavities I, and the hydraulic cavities are connected with oil supply pressure mouth 1；
Swivel nut 7 is included in guide valve blocks, control push rod 4 is installed in the hole of swivel nut 7；The end of push rod 4 is controlled to form the second hydraulic pressure with swivel nut 7
Chamber II, the hydraulic cavities are connected with system pressure mouth 2；Control push rod 4 and valve element 5 positioned opposite, region therebetween is formed
3rd hydraulic cavities III, the hydraulic cavities are connected with return hydraulic coupling mouth 3；Also include pressure spring component, pressure regulation bullet on guide valve blocks
Spring component is made up of spring 8, pressure regulation swivel nut 9, locking part.
Referring to accompanying drawing 1-2, in use, originally system pressure is relatively low, the insufficient pressure in the second hydraulic cavities II, valve
Core 5 and control push rod 4 are in initial position, and the first hydraulic cavities I and the 3rd hydraulic cavities III are blocked, system boost.With system
Pressure gradually rises, and the pressure in the second hydraulic cavities II increases therewith, until reaching setup pressure value, promotes control push rod 4 to make
Valve element 5 separates with valve seat 6, deviates initial position, and the first hydraulic cavities I and the 3rd hydraulic cavities III are conducted, and controls unloading valve main
Partial relief, oil sources directly return liquid, reduce power consumption, this is automatic offloading functions；Make system pressure when leakage or with reasons such as liquid
During reduction, the second hydraulic cavities II pressure reduces, and due to the active force of spring 8, promotes valve element 5 and control push rod 4 to the second liquid
Press chamber II direction movement, the first hydraulic cavities I and the 3rd hydraulic cavities III cut-offs, the primary portion supercharging of control unloading valve, oil sources to
System supplies high-pressure work liquid, and system pressure increases, and this is Automatic-boosting function.
It is two parts separated to control push rod 4 and valve element 5, and it is located at interval in the 3rd hydraulic cavities III.It is this separately to set
The mode put can improve the stability of system, reduce the susceptibility of pilot system, be more suitable for the use of subsurface environment, add simultaneously
Work and installation are all more convenient.
Supercharging-unloading pressure can be predefined by the sealing relationship of guide valve blocks, valve element 5 and valve seat 6, mechanical pilot valves shape
The functional unit independent into one, valve port corresponding with feather valve main are directly connected to, and adaptability is good；Supercharging-unloading function
Independent of flooding process, seal request is reduced, structure is simplified；This scheme can improve the reliability of system, reduce
The susceptibility of pilot system, is processed and assembling is more easy to realize, effectively can carry out Automatic-boosting, automatic deloading control to hydraulic power source
System；Supercharging-off-load-overflow one, it is simple in construction, it is easy for installation, the pattern of pilot valve can be designed according to the shape of main valve, especially
It is suitable for the emulsion system of underground.
It is described above, the preferable embodiment of patent only of the present invention, but the protection domain of patent of the present invention is not
This is confined to, any one skilled in the art can readily occur in the technical scope of patent diselosesll of the present invention
Change or replacement, should all cover within the protection domain of patent of the present invention.
Claims (2)
1. a kind of unloading valve mechanical pilot valves, including guide valve blocks, it is characterised in that be provided with system on the guide valve blocks
Pressure port, oil supply pressure mouth and return hydraulic coupling mouth；Valve element and valve seat, the valve element, valve seat and elder generation are included in the guide valve blocks
The housing of pilot valve body forms the first hydraulic cavities I, and the first hydraulic cavities I is connected with the oil supply pressure mouth；The pilot valve
Swivel nut is included in body, control push rod is installed in the swivel nut；The control push rod forms the second hydraulic cavities II with the swivel nut,
The second hydraulic cavities II is connected with the system pressure mouth；The control push rod and the valve element are positioned opposite, the control
Region between push rod processed and the valve element forms the 3rd hydraulic cavities III, the 3rd hydraulic cavities III and the return hydraulic coupling mouth
It is connected.
2. unloading valve mechanical pilot valves as claimed in claim 1, it is characterised in that：Also include pressure regulation on the guide valve blocks
Spring assembly, the pressure spring component include spring, pressure regulation swivel nut, locking part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720580007.4U CN206802455U (en) | 2017-05-23 | 2017-05-23 | A kind of unloading valve mechanical pilot valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720580007.4U CN206802455U (en) | 2017-05-23 | 2017-05-23 | A kind of unloading valve mechanical pilot valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206802455U true CN206802455U (en) | 2017-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720580007.4U Active CN206802455U (en) | 2017-05-23 | 2017-05-23 | A kind of unloading valve mechanical pilot valves |
Country Status (1)
| Country | Link |
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| CN (1) | CN206802455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255185A (en) * | 2017-05-23 | 2017-10-17 | 北京煤科天玛自动化科技有限公司 | A kind of unloading valve mechanical pilot valves |
| CN109611548A (en) * | 2018-12-03 | 2019-04-12 | 湖北航天技术研究院特种车辆技术中心 | A kind of shift control valve |
-
2017
- 2017-05-23 CN CN201720580007.4U patent/CN206802455U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255185A (en) * | 2017-05-23 | 2017-10-17 | 北京煤科天玛自动化科技有限公司 | A kind of unloading valve mechanical pilot valves |
| CN109611548A (en) * | 2018-12-03 | 2019-04-12 | 湖北航天技术研究院特种车辆技术中心 | A kind of shift control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200807 Address after: 100013 Beijing, Hepingli Youth ditch East Road, building No. 5, room and floor, No. 131, No. Co-patentee after: BEIJING MEIKE TIANMA AUTOMATION SCIENCE & TECHNOLOGY Co.,Ltd. Patentee after: BEIJING TIANDI-MARCO ELECTRO-HYDRAULIC CONTROL SYSTEM Co.,Ltd. Address before: 100013, Beijing, Chaoyang District, Hepingli Youth ditch East Road, building 5, one floor Patentee before: BEIJING MEIKE TIANMA AUTOMATION SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.131, ground floor, Tiandi building, No.5, qingniangou East Road, Hepingli, Chaoyang District, Beijing 100013 Patentee after: Beijing Tianma Zhikong Technology Co.,Ltd. Patentee after: Beijing coal technology Tianma Automation Technology Co., Ltd Address before: No.131, ground floor, Tiandi building, No.5, qingniangou East Road, Hepingli, Chaoyang District, Beijing 100013 Patentee before: BEIJING TIANDI-MARCO ELECTRO-HYDRAULIC CONTROL SYSTEM Co.,Ltd. Patentee before: Beijing coal technology Tianma Automation Technology Co., Ltd |