CN107504004A - Novel pressure recuperation valve - Google Patents
Novel pressure recuperation valve Download PDFInfo
- Publication number
- CN107504004A CN107504004A CN201710820821.3A CN201710820821A CN107504004A CN 107504004 A CN107504004 A CN 107504004A CN 201710820821 A CN201710820821 A CN 201710820821A CN 107504004 A CN107504004 A CN 107504004A
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- China
- Prior art keywords
- piston
- valve
- cavity volume
- oil
- hole
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/026—Pressure compensating valves
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of novel pressure recuperation valve, including：Valve body, valve pocket is provided with the valve body, piston is slidably connected in the valve pocket, the internal piston is movably set with steel ball, the valve body is provided with oil-feed cavity volume and fuel-displaced cavity volume, the piston moves up and down connection and establishes and block oil-feed cavity volume and fuel-displaced cavity volume, and the steel ball moves up and down dynamic connection and establishes and block oil-feed cavity volume and LS runners.By the above-mentioned means, novel pressure recuperation valve of the present invention, can simplify structure, reduce cost, have the function that to change compensation characteristic.
Description
Technical field
The present invention relates to mechanical field, more particularly to a kind of novel pressure recuperation valve.
Background technology
Pressure-compensated valve is very extensive in engineering machinery field application, and by taking excavator as an example, it includes swing arm, dipper, shovel
The elemental motions such as bucket, soil-shifting, revolution and complete machine walking, but in order to improve operating efficiency in actual condition, before generally requiring
The multiple working of several elemental motions is stated, height is provided to multiple executive components by hydraulicdirectional control valve from the flow that hydraulic pump provides
Force feed, when the total flow required for the maximum stream flow that hydraulic pump provides is less than or equal to system, hydraulic oil can preferentially flow to negative
Carry the relatively low executive component of pressure, and the higher executive component of load pressure can reduce speed or out of service.Solve this to ask
The basic hydraulic circuit of topic is all to increase pressure-compensated valve after hydraulicdirectional control valve, detects that the highest of executive component is born by it
Pressure is carried, and the highest load pressure detected is delivered to all pressure-compensated valves by shuttle valve so that hydraulicdirectional control valve
The pressure of outlet is all substantially equal to system highest load pressure, and the inlet pressure of hydraulicdirectional control valve is equal to hydraulic pump outlet pressure
Hydraulicdirectional control valve inlet outlet pressure differential all approximately equals of power, then each executive component passage, so as to realize when hydraulic pump flow not
When sufficient, the demand volume of each executive component is allocated according to the valve port area ratio of its hydraulicdirectional control valve.
The content of the invention
The present invention solves the technical problem of a kind of novel pressure recuperation valve is provided, structure can be simplified, reduced into
This, has the function that to change compensation characteristic.
In order to solve the above technical problems, one aspect of the present invention is：A kind of novel pressure recuperation valve is provided,
Including：Valve body, valve pocket being provided with the valve body, piston being slidably connected in the valve pocket, the internal piston activity is set
There is steel ball, the valve body is provided with oil-feed cavity volume and fuel-displaced cavity volume, and the piston moves up and down connection and establishes and block oil-feed to hold
Chamber and fuel-displaced cavity volume, the steel ball move up and down dynamic connection and establish and block oil-feed cavity volume and LS runners.
In a preferred embodiment of the present invention, the internal piston is additionally provided with screw plug, and the screw plug is used to limit steel
Ball shift position.
In a preferred embodiment of the present invention, the piston exterior is also connected with (the first back-moving spring, and described
One back-moving spring is located between valve pocket and piston.
In a preferred embodiment of the present invention, the piston has piston upper end area and piston area, described
The area of piston upper end area and piston area is unequal, and the oil-feed cavity volume acts on piston area and promotes piston
Move up, the (the first back-moving spring acts on piston upper end area and promotes piston to move down.
In a preferred embodiment of the present invention, be provided with the valve body first through hole, the second through hole, third through-hole and
Fourth hole, the piston are movably arranged in first through hole, and second through hole is connected with fuel-displaced cavity volume, the threeway
Hole and fourth hole are established and blocked the oil duct with oil-feed cavity volume by steel ball.
In a preferred embodiment of the present invention, cover plate is provided with the valve pocket, screw is provided with the cover plate.
In a preferred embodiment of the present invention, check valve is additionally provided with outside the valve pocket, is had in the valve body negative
Oil pocket is carried, the check valve is used to connect or the fuel-displaced cavity volume of break-make and load oil pocket.
In a preferred embodiment of the present invention, second back-moving spring, the reset bullet are provided with the inside of the check valve
Spring is between check valve and valve pocket.
The beneficial effects of the invention are as follows：Novel pressure recuperation valve of the present invention, can simplify structure, reduce cost, have and change
Become the effect of compensation characteristic.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other
Accompanying drawing, wherein：
Fig. 1 is the structural representation of the preferred embodiment of novel pressure recuperation valve one of the present invention；
The mark of each part is as follows in accompanying drawing：1st, screw, 2, cover plate, 3, valve pocket, 4, valve body, 5, (the first back-moving spring, 6, screw plug,
7th, piston, 8, second back-moving spring, 9, steel ball, 10, check valve, K1, first through hole, R1, oil-feed cavity volume, A1, piston lower surface
Product, R2, fuel-displaced cavity volume, K2, the second through hole, R2, fuel-displaced cavity volume, Z1, the conical surface, K3, third through-hole, R3, load chamber, A2, work
End area beyond the Great Wall, K4, fourth hole.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only the part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
All other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
Referring to Fig. 1, a kind of novel pressure recuperation valve, including：Valve body 4, is provided with valve pocket 3 in valve body 4, sliding in valve pocket 3
Dynamic to be connected with piston 7, the internal activity of piston 7 is provided with steel ball 9, and the body of valve 4 is provided with oil-feed and holds R1 chambers and fuel-displaced cavity volume R2, piston
7, which move up and down connection, establishes and blocks oil-feed cavity volume R1 and fuel-displaced cavity volume R2, steel ball 9 move up and down dynamic connection establish and block into
Oily cavity volume R1 and LS runners, steel ball 9 is used for the break-make for controlling oil-feed cavity volume R1 and LS runners, that is, the effect of shuttle valve, is used
In selecting highest load pressure exactly.
In addition, being additionally provided with screw plug 6 inside piston 7, screw plug 6 is used to limit the shift position of steel ball 9.
In addition, being also connected with (the first back-moving spring 5 outside piston 7, (the first back-moving spring 5 is located at valve pocket 3 and piston 7
Between, (the first back-moving spring 5 resets valve pocket 3.
In addition, piston 7 has piston upper end area A1 and piston area A2, end area A1 and piston lower surface beyond the Great Wall
Product A2 area is unequal, and oil-feed cavity volume R1 acts on piston area A2 and promotes piston 7 to move up, (the first back-moving spring
5, which act on piston upper end area A1, promotes piston 7 to move down.
In addition, first through hole K1, the second through hole K2, third through-hole K3 and fourth hole K4, piston 7 are provided with valve body 4
It is movably arranged in first through hole K1, the second through hole K2 is connected with fuel-displaced cavity volume R2, and third through-hole K3 and fourth hole K4 lead to
Steel ball 9 is crossed to establish and block and oil-feed cavity volume R1 oil duct.
In addition, being provided with cover plate 2 on valve pocket 3, screw 1 is provided with cover plate 2, cover plate 2 and screw 1 are used to limit valve pocket 3
It is mobile.
In addition, being additionally provided with check valve 10 outside valve pocket 3, there is load oil pocket R3 in valve body 4, check valve 10 is used to connect
Or the fuel-displaced cavity volume R2 of break-make and load oil pocket R3.
In addition, the inner side of check valve 10 is provided with second back-moving spring 8, second back-moving spring 8 is located at check valve 10 and valve pocket 3
Between.
The concrete operating principle of novel pressure recuperation valve of the present invention is as follows：When fuel-displaced cavity volume R2 pressure is more than LS oil ducts
During highest load pressure, when oil-feed cavity volume R1 pressure is slightly more than highest load pressure, steel ball 9 moves up, and piston 7 is now not
Mobile, oil-feed cavity volume R1 not yet connects with LS oil ducts, and now oil-feed cavity volume R1 pressure continues to raise, when oil-feed cavity volume R1 pressure liters
Height is to when being more than or equal to fuel-displaced cavity volume R2 pressure, and piston 7 moves up, and oil-feed cavity volume R1 is connected with fuel-displaced cavity volume R2, LS oil
Road highest load is now higher oil-feed cavity volume R1 pressure；When fuel-displaced cavity volume R2 pressure is less than highest load pressure, when
When oil-feed cavity volume R1 pressure is less times greater than highest load pressure, piston 7 moves up, and oil-feed cavity volume R1 and fuel-displaced cavity volume R2 connects
Logical, highest load pressure is constant, and this is that pressure-compensated valve opening is smaller, the pressure loss between oil-feed cavity volume R1 to fuel-displaced cavity volume R2
It is bigger；When fuel-displaced cavity volume R2 is more than load pressure, check valve 10 is opened, when fuel-displaced cavity volume R2 is less than load pressure, i.e.,
Make when being oil-feed cavity volume R1 and fuel-displaced cavity volume R2 UNICOMs, check valve 10 is also at closed mode.
Novel pressure recuperation valve of the present invention possesses the effect for changing pressure compensation characteristic, you can with by changing piston upper end
Area A2, if increasing its sectional area, pushing up the power of piston 7 will increase, and then oil-feed cavity volume R1 pressure is become larger
Shi Caineng causes oil-feed cavity volume R1 to be connected with fuel-displaced appearance R2 chambers；Otherwise reduce its sectional area, oil-feed cavity volume R1 pressure can be made smaller
When just can connect oil-feed cavity volume R1 and fuel-displaced cavity volume R2, fluid under pressure becomes easier to flow, moreover, the present invention pressure compensation
Valve also integrates LS check valves 10, reduces additional shuttle valve member, and cost is relatively low, and finished product is compacter, while this pressure
It is relatively simple to compensate valve arrangement, it is easy for installation.Meanwhile increase a check valve 10 on pressure-compensated valve, it is therefore an objective to prevent
Main valve plug incipient moment, when pump discharge does not set up the pressure needed for load also, then the hydraulic oil of load end can flow backwards
Pump is returned, and then the moment for the working life and work structuring for influenceing pump drops phenomenon.
Prior art is different from, novel pressure recuperation valve of the present invention, structure can be simplified, reduce cost, has to change and mends
The effect of compensation characteristics.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, it is included within the scope of the present invention.
Claims (8)
- A kind of 1. novel pressure recuperation valve, it is characterised in that including：Valve body, is provided with valve pocket in the valve body, in the valve pocket Piston is slidably connected, the internal piston is movably set with steel ball, and the valve body is provided with oil-feed cavity volume and fuel-displaced cavity volume, institute State piston to move up and down connection foundation and block oil-feed cavity volume and fuel-displaced cavity volume, the steel ball moves up and down dynamic connection and establishes and hinder Disconnected oil-feed cavity volume and LS runners.
- 2. novel pressure recuperation valve according to claim 1, it is characterised in that the internal piston is additionally provided with screw plug, The screw plug is used to limit steel ball shift position.
- 3. novel pressure recuperation valve according to claim 2, it is characterised in that the piston exterior is also connected with One back-moving spring, the (the first back-moving spring are located between valve pocket and piston.
- 4. novel pressure recuperation valve according to claim 3, it is characterised in that the piston have piston upper end area and The area of piston area, piston upper end area and piston area is unequal, and the oil-feed cavity volume acts on work Plug lower end area promotes piston to move up, and the (the first back-moving spring acts on piston upper end area and promotes piston to moving down It is dynamic.
- 5. novel pressure recuperation valve according to claim 4, it is characterised in that be provided with the valve body first through hole, Second through hole, third through-hole and fourth hole, the piston are movably arranged in first through hole, second through hole and fuel-displaced appearance Chamber is connected, and the third through-hole and fourth hole are established and blocked the oil duct with oil-feed cavity volume by steel ball.
- 6. novel pressure recuperation valve according to claim 1, it is characterised in that cover plate is provided with the valve pocket, it is described Screw is provided with cover plate.
- 7. according to any described novel pressure recuperation valves of claim 1-6, it is characterised in that be additionally provided with outside the valve pocket Check valve, the valve body is interior to have load oil pocket, and the check valve is used to connect or the fuel-displaced cavity volume of break-make and load oil pocket.
- 8. novel pressure recuperation valve according to claim 7, it is characterised in that it is multiple that second is provided with the inside of the check valve Position spring, the back-moving spring is between check valve and valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820821.3A CN107504004A (en) | 2017-09-13 | 2017-09-13 | Novel pressure recuperation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820821.3A CN107504004A (en) | 2017-09-13 | 2017-09-13 | Novel pressure recuperation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107504004A true CN107504004A (en) | 2017-12-22 |
Family
ID=60695463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710820821.3A Pending CN107504004A (en) | 2017-09-13 | 2017-09-13 | Novel pressure recuperation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107504004A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389829A (en) * | 2021-06-10 | 2021-09-14 | 徐州徐工矿业机械有限公司 | Mining dump truck and brake automatic compensator, brake and braking method thereof |
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|---|---|---|---|---|
| DE29509213U1 (en) * | 1995-03-24 | 1996-07-25 | O & K Orenstein & Koppel Ag, 13581 Berlin | Device for flow pressure-independent flow distribution in a spool for mobile construction and work machines |
| CN1490545A (en) * | 2003-08-19 | 2004-04-21 | 谦 查 | Back-pressure balancing minimum pressure valves |
| JP2008208982A (en) * | 2007-02-28 | 2008-09-11 | Nachi Fujikoshi Corp | Control valve device |
| KR20100044037A (en) * | 2008-10-21 | 2010-04-29 | 윤권헌 | Hydrauic control valve |
| CN202001688U (en) * | 2011-04-15 | 2011-10-05 | 杭州海聚动力科技有限公司 | Pressure switch valve having pressure hysteresis characteristic |
| CN202413907U (en) * | 2011-12-16 | 2012-09-05 | 江门市兴江转向器有限公司 | Automobile hydraulic power-assisted steering device applying compensating valve |
| CN104235097A (en) * | 2013-11-20 | 2014-12-24 | 江苏恒立液压有限公司 | Pressure-compensating valve |
| CN104235098A (en) * | 2013-12-23 | 2014-12-24 | 江苏恒立液压有限公司 | Hydraulic valve device |
| CN104265715A (en) * | 2014-10-16 | 2015-01-07 | 江苏恒立液压有限公司 | Pressure compensating valve |
| CN104295549A (en) * | 2014-10-16 | 2015-01-21 | 江苏恒立液压有限公司 | Split type pressure compensation valve |
| CN104295771A (en) * | 2014-10-16 | 2015-01-21 | 江苏恒立液压有限公司 | Pressure cut-off slice valve |
| CN105402449A (en) * | 2015-12-25 | 2016-03-16 | 江苏恒立液压有限公司 | Hydraulically-controlled check valve |
| CN207297495U (en) * | 2017-09-13 | 2018-05-01 | 江苏恒立液压科技有限公司 | Novel pressure recuperation valve |
-
2017
- 2017-09-13 CN CN201710820821.3A patent/CN107504004A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29509213U1 (en) * | 1995-03-24 | 1996-07-25 | O & K Orenstein & Koppel Ag, 13581 Berlin | Device for flow pressure-independent flow distribution in a spool for mobile construction and work machines |
| CN1490545A (en) * | 2003-08-19 | 2004-04-21 | 谦 查 | Back-pressure balancing minimum pressure valves |
| JP2008208982A (en) * | 2007-02-28 | 2008-09-11 | Nachi Fujikoshi Corp | Control valve device |
| KR20100044037A (en) * | 2008-10-21 | 2010-04-29 | 윤권헌 | Hydrauic control valve |
| CN202001688U (en) * | 2011-04-15 | 2011-10-05 | 杭州海聚动力科技有限公司 | Pressure switch valve having pressure hysteresis characteristic |
| CN202413907U (en) * | 2011-12-16 | 2012-09-05 | 江门市兴江转向器有限公司 | Automobile hydraulic power-assisted steering device applying compensating valve |
| CN104235097A (en) * | 2013-11-20 | 2014-12-24 | 江苏恒立液压有限公司 | Pressure-compensating valve |
| CN104235098A (en) * | 2013-12-23 | 2014-12-24 | 江苏恒立液压有限公司 | Hydraulic valve device |
| CN104265715A (en) * | 2014-10-16 | 2015-01-07 | 江苏恒立液压有限公司 | Pressure compensating valve |
| CN104295549A (en) * | 2014-10-16 | 2015-01-21 | 江苏恒立液压有限公司 | Split type pressure compensation valve |
| CN104295771A (en) * | 2014-10-16 | 2015-01-21 | 江苏恒立液压有限公司 | Pressure cut-off slice valve |
| CN105402449A (en) * | 2015-12-25 | 2016-03-16 | 江苏恒立液压有限公司 | Hydraulically-controlled check valve |
| CN207297495U (en) * | 2017-09-13 | 2018-05-01 | 江苏恒立液压科技有限公司 | Novel pressure recuperation valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389829A (en) * | 2021-06-10 | 2021-09-14 | 徐州徐工矿业机械有限公司 | Mining dump truck and brake automatic compensator, brake and braking method thereof |
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