CN109237056A - A kind of plug-in precompression valve - Google Patents
A kind of plug-in precompression valve Download PDFInfo
- Publication number
- CN109237056A CN109237056A CN201811272922.2A CN201811272922A CN109237056A CN 109237056 A CN109237056 A CN 109237056A CN 201811272922 A CN201811272922 A CN 201811272922A CN 109237056 A CN109237056 A CN 109237056A
- Authority
- CN
- China
- Prior art keywords
- spring
- spool
- guide sleeve
- valve
- hollow cylinder
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
Abstract
The present invention relates to a kind of plug-in precompression valves, it belongs to control valve technical field.The present invention is mainly to solve technical problem easy to damage when volume existing for existing precompression valve is big, spool easily blocks, voltage endurance capability is poor and installation, disassembly.The technical scheme is that a kind of plug-in precompression valve, it includes valve seat, spool, guide sleeve, the first spring base, spring, second spring seat and elastic spring, the valve seat is hollow cylinder, and lower end is equipped with outer circle step on the outside of the valve seat, achieves and limits in valve body；The spool is made of the frustum of a cone and hollow cylinder guide rod, and the spool is located at valve seat upper end；The guide sleeve is hollow cylinder, the hollow cylinder guide rod of the spool is in the pilot hole of guide sleeve middle and lower part setting, first spring base is located at the top of spool hollow cylinder guide rod, the spring is mounted in the upper surface of first spring base, the second spring seat is located at the upper surface of spring, and the elastic spring is in the circlip groove of guide sleeve spring mounting hole top setting.
Description
Technical field
The present invention relates to a kind of plug-in precompression valves, it belongs to control valve technical field.
Background technique
Direction valve is very widely used, is indispensable control element in hydraulic system.In hydraulic system, big flow
Pilot change over valve is often selected in system, if working connection installs precompression valve without pressure and without individual guide's oil passage at this time
To establish minimum leader pressure, manipulation main valve plug movement makes working connection work.
Current common precompression valve is that split type plug-in mounting structure or valve body directly process valve seat part, mainly have with
Lower several points are insufficient: 1, volume is big, and application is restricted；2, spool easily blocks when opening, closing；3, valve body material intensity is not high,
Voltage endurance capability is poor, and oil sealing line is be easy to cause to wear；4, it is not easy to dismount；5, sealing ring radial direction oil sealing, rapid wear when installing, dismantling
It is bad.
Summary of the invention
Present invention aim to address volumes existing for existing precompression valve, and big, spool easily blocks, voltage endurance capability is poor and installs, tears open
Technical problem easy to damage when unloading provides a kind of plug-in precompression valve.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of plug-in precompression valve comprising valve seat, spool, guide sleeve, the first spring base, spring, second spring seat and steel
Silk retaining ring, the valve seat are hollow cylinder, and inner hole is the through-hole of same diameter, and valve seat inner hole upper end seamed edge keeps sharp
And linear sealing is formed with spool cone match, realize oil sealing, lower end is equipped with outer circle step on the outside of the valve seat, achieves in valve
It is limited in body；The spool is made of the frustum of a cone and hollow cylinder guide rod, and hollow cylinder guide rod is located at the center of circular cone countertop
And the hollow hole of hollow cylinder guide rod and the frustum of a cone are penetrated through, the bottom of the frustum of a cone is equipped with conical seal (contact) face, and the spool is located at
Valve seat upper end；The guide sleeve is hollow cylinder, and the middle and lower part of the guide sleeve inner cavity is set as pilot hole, in the guide sleeve inner cavity
Top is set as spring mounting hole；The hollow cylinder guide rod of the spool is mounted in the pilot hole of the guide sleeve middle and lower part setting,
First spring base is located at the top of spool hollow cylinder guide rod and is located at the lower part of guide sleeve spring mounting hole, the spring dress
In the upper surface of first spring base, the second spring seat is located at the upper surface of spring and is located at the top of guide sleeve spring mounting hole, institute
Elastic spring is stated in the circlip groove of guide sleeve spring mounting hole top setting and by second spring seat, spring and the first spring base
It is fixed in guide sleeve spring mounting hole.
Further, the spool uses Carburization Treatment.
Further, the spool is hollow structure, is connected to working connection with guide's oil circuit, realizes internal control mode.
The invention has the benefit that
Plug-in precompression valve of the invention is monolithic construction, and the included guiding of spool, valve seat and spool are linear sealing, are adopted
With wear-resistant material, spool passes through Carburization Treatment, and using end face seal, elastic spring limit is solved existing for existing precompression valve
Technical problem easy to damage when volume is big, spool easily blocks, voltage endurance capability is poor and installation, disassembly.Compared with the background art, of the invention
Have the advantages that high pressure resistant, small in size, light-weight, easy to install and use, reliable operation and through-current capability are strong.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is scheme of installation of the present invention on valve body；
In figure: 1- valve seat, 2- spool, 3- guide sleeve, the first spring base of 4-, 5- spring, 6- second spring seat, 7- steel wire gear
Circle, 8- sealing ring.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, one of the present embodiment plug-in precompression valve comprising valve seat 1, spool 2, guide sleeve 3,
First spring base 4, spring 5, second spring seat 6 and elastic spring 7, the valve seat 1 are hollow cylinder, and inner hole is same diameter
Through-hole, the 1 inner hole upper end seamed edge of valve seat keeps sharp and forms linear sealing with 2 cone match of spool, realizes oil sealing, described
1 outside lower end of valve seat is equipped with outer circle step, achieves and limits in valve body；The spool 2 is led by the frustum of a cone and hollow cylinder
Bar is constituted, and hollow cylinder guide rod is located at the center of circular cone countertop and penetrates through the hollow hole of hollow cylinder guide rod and the frustum of a cone,
The bottom of the frustum of a cone is equipped with conical seal (contact) face, and the spool 2 is located at 1 upper end of valve seat；The guide sleeve 3 is hollow cylinder, described
The middle and lower part of 3 inner cavity of guide sleeve is set as pilot hole, and the middle and upper part of 3 inner cavity of guide sleeve is set as spring mounting hole；The sky of the spool 2
Heart cylinder guide rod is mounted in the pilot hole of 3 middle and lower part of the guide sleeve setting, and first spring base 4 is located at 2 open circles of spool
The top of column guide rod and the lower part for being located at 3 spring mounting hole of guide sleeve, the spring 5 is the upper surface of mounted in first spring base 4, and described the
Two spring bases 6 are located at the upper surface of spring 5 and are located at the top of 3 spring mounting hole of guide sleeve, and the elastic spring 7 is mounted in 3 bullet of guide sleeve
3 spring of guide sleeve peace is fixed in the circlip groove of spring mounting hole top setting and by second spring seat 6, spring 5 and the first spring base 4
It fills in hole.Sealing ring 8 is located between valve seat 1 and valve body, realizes end face oil sealing.
The spool 2 uses Carburization Treatment.
The spool 2 is hollow structure, is connected to working connection with guide's oil circuit, realizes internal control mode.
Spool 2 of the invention is poppet valve core pattern, flows freely (pressure drop very little) for a direction, reversed to end；Valve
The conical seal (contact) face of 1 inner hole seamed edge of seat and spool 2 cooperates, and forms linear sealing and realizes oil sealing function, guarantees that import fuel feeding will not be straight
It unloads lotus；1 outer circle of valve seat and valve body hole clearance fit guarantee that only seldom Leakage Energy passes through gap loss；Spool 2 is hollow
Structure, oil liquid enter guide's fuel feeding area by 2 central hollow hole of spool.The pilot hole of guide sleeve 3 play the guiding role, and opens spool
When quick, sensitive, 2 automatic centering of spool when closing.6 support spring 5 of first spring base 4 and second spring seat, second spring seat 6
With 3 spring mounting hole clearance fit of guide sleeve, the vibration of spring is reduced.The position of second spring seat 6 is limited by elastic spring 7,
Keep constant the cracking pressure of check valve.By replacing spring specification, different cracking pressures may be implemented.
The course of work of the invention are as follows:
The oil liquid of oil inlet P passes through the inner hole of valve seat 1, flows through 2 central hollow hole of spool and enters guide's fuel feeding area, passes through elder generation
Control oil circuit is led to act on main valve plug.Oil liquid pressure acts on 2 lower end surface pressure-bearing surface of spool, makes spool 2 by upward
Active force, compressed spring 5 act on the downward power of spool 2, when the initial setting that the oil liquid pressure of oil inlet P is greater than spring 5 is pressed
When power, spool 2 travels upward and out valve seat 1, while oil liquid acts on main valve plug and pushes main valve plug movement, realizes working connection work
Make.When the oil liquid pressure of oil inlet P is less than the initial setting pressure of compressed spring 5, spool 2 cooperates with valve seat 1 realizes that line is close
Oil sealing is sealed, to guarantee that P mouthfuls can set up the minimum elder generation guide pressure for pushing main valve plug movement.
Claims (3)
1. a kind of plug-in precompression valve, it is characterised in that: including valve seat (1), spool (2), guide sleeve (3), the first spring base (4),
Spring (5), second spring seat (6) and elastic spring (7), the valve seat (1) are hollow cylinder, and inner hole is the logical of same diameter
Hole, valve seat (1) the inner hole upper end seamed edge keep sharp and form linear sealing with spool (2) cone match, realize oil sealing, described
Lower end is equipped with outer circle step on the outside of valve seat (1), achieves and limits in valve body；The spool (2) is by the frustum of a cone and open circles
Column guide rod is constituted, and hollow cylinder guide rod is located at the center of circular cone countertop and passes through the hollow hole of hollow cylinder guide rod with the frustum of a cone
Logical, the bottom of the frustum of a cone is equipped with conical seal (contact) face, and the spool (2) is located at valve seat (1) upper end；The guide sleeve (3) is open circles
Cylinder, the middle and lower part of guide sleeve (3) inner cavity are set as pilot hole, and the middle and upper part of guide sleeve (3) inner cavity is set as spring mounting hole；
The hollow cylinder guide rod of the spool (2) is mounted in the pilot hole of the guide sleeve (3) middle and lower part setting, first spring base
(4) it is located at the top of spool (2) hollow cylinder guide rod and is located at the lower part of guide sleeve (3) spring mounting hole, the spring (5) is mounted in
The upper surface of first spring base (4), the second spring seat (6) are located at the upper surface of spring (5) and are located at guide sleeve (3) spring mounting hole
Top, the elastic spring (7) is in the circlip groove of guide sleeve (3) spring mounting hole top setting and by second spring seat
(6), spring (5) and the first spring base (4) are fixed in guide sleeve (3) spring mounting hole.
2. a kind of plug-in precompression valve according to claim 1, it is characterised in that: the spool (2) uses Carburization Treatment.
3. a kind of plug-in precompression valve according to claim 1 or 2, it is characterised in that: the spool (2) is hollow knot
Structure is connected to working connection with guide's oil circuit, realizes internal control mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811272922.2A CN109237056B (en) | 2018-10-25 | 2018-10-25 | Cartridge formula preforming valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811272922.2A CN109237056B (en) | 2018-10-25 | 2018-10-25 | Cartridge formula preforming valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109237056A true CN109237056A (en) | 2019-01-18 |
| CN109237056B CN109237056B (en) | 2020-04-03 |
Family
ID=65079081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811272922.2A Active CN109237056B (en) | 2018-10-25 | 2018-10-25 | Cartridge formula preforming valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109237056B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228601A (en) * | 2020-09-27 | 2021-01-15 | 中核核电运行管理有限公司 | Anti-jamming valve core assembly of lubricating oil gear pump pressure release valve |
| CN112524112A (en) * | 2020-11-27 | 2021-03-19 | 太重集团榆次液压工业有限公司 | Differential pressure output valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2201539Y (en) * | 1994-06-06 | 1995-06-21 | 陈志坚 | Single spring prepressing valve |
| CN202091279U (en) * | 2011-06-01 | 2011-12-28 | 宁波克泰液压有限公司 | Thread cartridge buffering overflow valve |
| CN203009431U (en) * | 2012-12-26 | 2013-06-19 | 龙工（上海）桥箱有限公司 | Cushion valve for excavator motor |
| CN204186666U (en) * | 2014-10-15 | 2015-03-04 | 浙江华益机械有限公司 | A kind of plug-in type load holding valve and hydraulic load retentive control system |
| CN207437856U (en) * | 2017-11-20 | 2018-06-01 | 广东浩喜电器科技有限公司 | A kind of self-force type check valve |
-
2018
- 2018-10-25 CN CN201811272922.2A patent/CN109237056B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2201539Y (en) * | 1994-06-06 | 1995-06-21 | 陈志坚 | Single spring prepressing valve |
| CN202091279U (en) * | 2011-06-01 | 2011-12-28 | 宁波克泰液压有限公司 | Thread cartridge buffering overflow valve |
| CN203009431U (en) * | 2012-12-26 | 2013-06-19 | 龙工（上海）桥箱有限公司 | Cushion valve for excavator motor |
| CN204186666U (en) * | 2014-10-15 | 2015-03-04 | 浙江华益机械有限公司 | A kind of plug-in type load holding valve and hydraulic load retentive control system |
| CN207437856U (en) * | 2017-11-20 | 2018-06-01 | 广东浩喜电器科技有限公司 | A kind of self-force type check valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228601A (en) * | 2020-09-27 | 2021-01-15 | 中核核电运行管理有限公司 | Anti-jamming valve core assembly of lubricating oil gear pump pressure release valve |
| CN112524112A (en) * | 2020-11-27 | 2021-03-19 | 太重集团榆次液压工业有限公司 | Differential pressure output valve |
| CN112524112B (en) * | 2020-11-27 | 2023-02-03 | 太重集团榆次液压工业有限公司 | Differential pressure output valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109237056B (en) | 2020-04-03 |
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