CN109931306A - A kind of inserted valve hydraulic withdrawal system - Google Patents
A kind of inserted valve hydraulic withdrawal system Download PDFInfo
- Publication number
- CN109931306A CN109931306A CN201910259425.7A CN201910259425A CN109931306A CN 109931306 A CN109931306 A CN 109931306A CN 201910259425 A CN201910259425 A CN 201910259425A CN 109931306 A CN109931306 A CN 109931306A
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- China
- Prior art keywords
- inserted valve
- valve
- cover board
- pressure
- mouthfuls
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- 238000013016 damping Methods 0.000 claims abstract description 10
- 239000002828 fuel tank Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
It is removed the invention discloses a kind of inserted valve hydraulic withdrawal system, the main spool spring of inserted valve to be removed with the cover board with damping hole；The system includes manual pump, cover board, overflow valve and pressure gauge；One high-pressure hand pump is accessed into oil circuit, up the pressure of ejection can be improved 1 times or more in this way.It not only accesses from P mouthfuls, is also accessed from A mouthfuls, such active area is 1 times or so also big.Therefore, up ejection force is about normal 4 times or so below main valve.Meanwhile spring has been removed, the resistance that main valve moves up reduces.In addition, remove the cover board that original tape has damping hole a, the cover board of straight-through Y is loaded onto, a possibility that such damping hole blocking causes the oil of control chamber not go out is excluded.This mode is taken, failure inserted valve can be opened.Compared with prior art, this system structure is simple, while using flow and driving pressure is increased, connecting Y mouthfuls of return line, being achieved in the smooth dismounting of inserted valve.
Description
Technical field
The present invention relates to technical field of hydraulic pressure more particularly to hydraulic cartridge valve maintenance dismounting technical fields.
Background technique
Hydraulic cartridge valve has many advantages, such as: negotiability is big, and the pressure loss is small, is suitable for large-flow hydraulic system；It is main
Spool stroke is short, sensitive, and response is fast, impacts small；Oil rub resistance ability is strong, to oil filtrating precision without strict demand；Structure
Simply, easy to maintenance, failure is few, and the service life is long；Plug-in unit has the characteristic of a valve multipotency, convenient for forming various hydraulic circuits, work
It is reliable and stable；Plug-in unit has generalization, standardization, the very high part of seriation degree, can form integrated system.Therefore,
Inserted valve has a wide range of applications in hydraulic system.
Inserted valve is mounted on inside integrated package, once because the reasons such as pollute, get rusty are stuck, being removed will be very tired
It is difficult.
In inserted valve normal use, hydraulic system is as shown in Figure 1.Wherein, P connects hydraulic pump, and A connects hydraulic cylinder.Work as commutation
Valve electromagnet obtain it is electric, inserted valve control chamber shutdown control oil circuit X, connect oil return line Y, control cavity pressure be zero.Pressure oil passes through
Circular ring shape area pushes spool to move up below inserting spool, and at this moment valve working connection P → A is connected, and the pressure oil of hydraulic pump can enter
Hydraulic cylinder pushes load running.If main valve breaks down, it cannot open, valve working connection P → A not can turn on.
The reason of main valve plug cannot be opened has: the control pressure Px value in control oil pocket Ax is excessively high, and main valve plug is made not open；
Fs spring force is excessive, and main valve plug is made not open；Oil circuit mouth P oil liquid pressure is too low, and main valve plug is made not open；Liquid resistance a aperture is blocked
Plug, prevents main valve plug control chamber inner fluid from being discharged, main valve plug is caused not open；Pilot valve is faulty, such as controls signal malfunction
Make etc.；Main valve plug and the valve pocket accuracy of manufacture are poor, and main valve plug is caused to block on position in off position；Oil liquid is excessively dirty, greasy dirt
Grain blocks main valve plug on position in off position；Main valve gets rusty.
Summary of the invention
It is an object of the invention to provide a kind of device in view of the above problems, for removing the inserting valve core being stuck.
In order to open faulty inserted valve, the technical solution adopted by the present invention is that: increase the active area of ejection main valve；
The pressure for improving ejection main valve, excludes the influence of damping hole, removes the influence of spring force.
(1) inserted valve that can not be normally opened using high pressure hand hydraulic pump ejection.
(2) inserted valve that high pressure oil can not be opened normally from P, A ejection simultaneously.
(3) straight-through Y mouthfuls of cover board is added, excludes the influence of damping hole blocking.
The technical solution adopted by the present invention is a kind of inserted valve hydraulic withdrawal system, the main spool spring of inserted valve 3 to be removed
It is removed with the cover board with damping hole；The system includes manual pump 1, cover board 2, overflow valve 4 and pressure gauge 5；Manual pump 1
Connect by two groups of pipelines with inserted valve 3 to be removed, P mouth of one group of pipeline and inserted valve 3 to be removed is connected, another group of pipeline and
The A mouth of inserted valve 3 to be removed is connected；Cover board 2 is arranged at the Y mouth of inserted valve 3 to be removed, and the centre of cover board 2 is equipped with return port
21, the Y mouth of inserted valve 3 to be removed is connected by return port 21 with fuel tank；Overflow valve 4 and pressure gauge 5 setting manual pump 1 with
On circuit between fuel tank.
The driving pressure of manual pump 1 is greater than the driving pump pressure of former inserted valve 3 to be removed.
Compared with prior art, this system structure is simple, while using flow and driving pressure is increased, connecting Y mouthfuls
Return line is achieved in the smooth dismounting of inserted valve.
Detailed description of the invention
Fig. 1 is in inserted valve hydraulic system basic structure schematic diagram.
Fig. 2 is technical solution of the present invention schematic diagram.
Specific embodiment
Claimed technical solution is described in further detail now in conjunction with the drawings and specific embodiments.
A kind of inserted valve hydraulic withdrawal system, the main spool spring of inserted valve 3 to be removed and cover board with damping hole are equal
It is removed；The system includes manual pump 1, cover board 2, overflow valve 4 and pressure gauge 5；Manual pump 1 is inserted by two groups of pipelines with to be removed
It fills valve 3 to connect, the P mouth of one group of pipeline and inserted valve 3 to be removed is connected, and the A mouth of another group of pipeline and inserted valve 3 to be removed connects
It is logical；Cover board 2 is arranged at the Y mouth of inserted valve 3 to be removed, and the centre of cover board 2 is equipped with return port 21, the Y mouth of inserted valve 3 to be removed
It is connected by return port 21 with fuel tank；Overflow valve 4 and pressure gauge 5 are arranged on the circuit between manual pump 1 and fuel tank.
The driving pressure of manual pump 1 is greater than the driving pump pressure of former inserted valve 3 to be removed.
Compared with prior art, this system structure is simple, while using flow and driving pressure is increased, connecting Y mouthfuls
Return line is achieved in the smooth dismounting of inserted valve.
In Fig. 2, a high-pressure hand pump is accessed into oil circuit, up the pressure of ejection can be improved 1 times or more in this way.Not only from
P mouthfuls of accesses, are also accessed from A mouthfuls, and such active area is 1 times or so also big.Therefore, up ejection force is about normal below main valve
4 times or so.Meanwhile spring has been removed, the resistance that main valve moves up reduces.In addition, the cover board that original tape has damping hole a is removed,
Load onto the cover board of straight-through Y, a possibility that such damping hole blocking causes the oil of control chamber not go out is excluded.
This mode is taken, failure inserted valve can be opened.
The embodiment of the above is only embodiments of the present invention, and but not intended to limit the scope of the present invention, therefore all
Change according to made by the shape of the present invention, principle, should all be included within the scope of protection of the present invention.
Claims (2)
1. a kind of inserted valve hydraulic withdrawal system, the main spool spring of inserted valve (3) to be removed and cover board with damping hole are equal
It is removed；It is characterized by: the system includes manual pump (1), cover board (2), overflow valve (4) and pressure gauge (5)；Manual pump (1)
It is connect by two groups of pipelines with inserted valve to be removed (3), the P mouth of one group of pipeline and inserted valve to be removed (3) is connected, another group of pipe
The A mouth of road and inserted valve to be removed (3) is connected；Cover board (2) is arranged at the Y mouth of inserted valve to be removed (3), in cover board (2)
Between be equipped with return port (21), the Y mouth of inserted valve (3) to be removed is connected by return port (21) with fuel tank；Overflow valve (4) and pressure
On the circuit that power meter (5) is arranged between manual pump (1) and fuel tank.
2. a kind of inserted valve hydraulic withdrawal system according to claim 1, it is characterised in that: the driving pressure of manual pump (1)
Power is greater than the driving pump pressure of former inserted valve (3) to be removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910259425.7A CN109931306A (en) | 2019-04-02 | 2019-04-02 | A kind of inserted valve hydraulic withdrawal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910259425.7A CN109931306A (en) | 2019-04-02 | 2019-04-02 | A kind of inserted valve hydraulic withdrawal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109931306A true CN109931306A (en) | 2019-06-25 |
Family
ID=66988986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910259425.7A Pending CN109931306A (en) | 2019-04-02 | 2019-04-02 | A kind of inserted valve hydraulic withdrawal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109931306A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201175824Y (en) * | 2008-01-29 | 2009-01-07 | 安康水力发电厂 | Full automatic hydraulic disassembly system of gate arm |
| CN101886646A (en) * | 2009-05-15 | 2010-11-17 | 上海贺菩机械制造有限公司 | Electric torque hydraulic spanner pump |
| CN102400967A (en) * | 2011-11-03 | 2012-04-04 | 中联重科股份有限公司 | Fault handling method for cartridge valve and cartridge valve assembly |
| CN204658334U (en) * | 2015-06-10 | 2015-09-23 | 中国长江电力股份有限公司 | A kind of large-scale inserted valve spool dismantling device |
| CN107654426A (en) * | 2017-10-30 | 2018-02-02 | 湖南五新隧道智能装备股份有限公司 | A kind of drill jumbo and its impulsive control hydraulic system |
| CN207710705U (en) * | 2017-10-31 | 2018-08-10 | 燕山大学 | A kind of valve pocket and Cartridge inserted valve integrated block disassembling fixture |
| CN209925322U (en) * | 2019-04-02 | 2020-01-10 | 哈工新欧(岳阳)测控装备有限公司 | Hydraulic dismounting system for cartridge valve |
-
2019
- 2019-04-02 CN CN201910259425.7A patent/CN109931306A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201175824Y (en) * | 2008-01-29 | 2009-01-07 | 安康水力发电厂 | Full automatic hydraulic disassembly system of gate arm |
| CN101886646A (en) * | 2009-05-15 | 2010-11-17 | 上海贺菩机械制造有限公司 | Electric torque hydraulic spanner pump |
| CN102400967A (en) * | 2011-11-03 | 2012-04-04 | 中联重科股份有限公司 | Fault handling method for cartridge valve and cartridge valve assembly |
| CN204658334U (en) * | 2015-06-10 | 2015-09-23 | 中国长江电力股份有限公司 | A kind of large-scale inserted valve spool dismantling device |
| CN107654426A (en) * | 2017-10-30 | 2018-02-02 | 湖南五新隧道智能装备股份有限公司 | A kind of drill jumbo and its impulsive control hydraulic system |
| CN207710705U (en) * | 2017-10-31 | 2018-08-10 | 燕山大学 | A kind of valve pocket and Cartridge inserted valve integrated block disassembling fixture |
| CN209925322U (en) * | 2019-04-02 | 2020-01-10 | 哈工新欧(岳阳)测控装备有限公司 | Hydraulic dismounting system for cartridge valve |
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