CN105952702A - Balance valve - Google Patents
Balance valve Download PDFInfo
- Publication number
- CN105952702A CN105952702A CN201610453852.5A CN201610453852A CN105952702A CN 105952702 A CN105952702 A CN 105952702A CN 201610453852 A CN201610453852 A CN 201610453852A CN 105952702 A CN105952702 A CN 105952702A
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- China
- Prior art keywords
- valve
- plug
- main valve
- port
- hydraulic fluid
- 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.)
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Classifications
-
- 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
- F15B13/029—Counterbalance valves
-
- 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
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
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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 balance valve which comprises a valve body, a main valve element and a one-way valve element. The valve body is provided with a first oil port, a second oil port and a control oil port. A spring seat is arranged at the front end of the valve body. A one-way valve spring is arranged between the spring seat and the one-way valve element in an abutting manner. A valve port corresponding to the second oil port is formed in the front end of the main valve element. An annular conical face in sealing fit with the one-way valve element is arranged on the outer wall of the valve port. An oil passing hole corresponding to the first oil port is formed in the middle portion of the main valve element. The first oil port communicates with the valve port through the oil passing hole. A screw plug is arranged at the rear end of the valve body. A spring set is arranged between the rear end of the main valve element and the screw plug in an abutting manner. The position between the main valve element and the valve body is further sleeved with a guide sleeve corresponding to the control oil port. The guide sleeve and the main valve element are in axial linkage fit. A control oil cavity is formed between the guide sleeve and the valve body. The control oil port communicates with the control oil cavity. The balance valve is simple and reasonable in structure, good in overflowing effect and smooth in oil return, energy losses can be reduced easily, and the work efficiency is improved.
Description
Technical field
The present invention relates to valve class technical field, particularly to a kind of balanced valve.
Background technology
Balanced valve, also known as load control valve or motion control valve, is the crucial hydraulic pressure unit in hydraulic pressure load bearing system
Part.The feature of balanced valve is to integrate three valves: one is as check valve, and it allows liquid stream unrestricted
Ground enters hydraulic actuator (such as oil cylinder or motor), to lift load, then pins loop, keeps load
Invariant position；Two is as hydraulic-control throttling valve, controls the open amount of choke valve by controlling port, from
And control speed, make load speed on request smoothly decline；Three is as overflow valve, without controlling pressure
Power, but when the pressure of load port (due to such as thermal expansion or external force) exceedes setting pressure, overflow valve
Open, to avoid hydraulic actuator because of excessive pressure damages.Balanced valve generally and telescopic oil cylinder with the use of, but
Being that traditional balanced valve is unreasonable owing to self structure is arranged, not only flushing effect is the best, and when flexible
When the piston rod of oil cylinder bounces back, rodless cavity oil return is obstructed so that back pressure raises, liquid resistance increases, thus
Cause energy loss serious, inefficiency.
Summary of the invention
Present invention aims to defect and the deficiency of prior art, it is provided that a kind of balanced valve, its knot
Structure advantages of simple, flushing effect is preferable, and oil return is unobstructed, advantageously reduces energy loss, improves work effect
Rate.
For achieving the above object, the present invention is by the following technical solutions:
A kind of balanced valve of the present invention, including valve body, the main valve plug that is respectively arranged in described valve body
And nonreturn valve core, described valve body is respectively equipped with the first hydraulic fluid port, the second hydraulic fluid port and control port, described valve
The front end of body is provided with spring base, and it is spacing that described valve interior wall is provided with described nonreturn valve core counter stopper
Step, described nonreturn valve core is movably arranged between described limited step and described spring base, described spring base
And support between described nonreturn valve core and be provided with one-way valve spring；
The front end of described main valve plug is provided with the valve port corresponding with described second hydraulic fluid port, the outer wall of described valve port
It is provided with and seals, with described nonreturn valve core, the circular cone coordinated；The middle part of described main valve plug is provided with and described
The oil-through hole that one hydraulic fluid port is corresponding, described first hydraulic fluid port is connected with described valve port by described oil-through hole；Institute
The rear end stating valve body is provided with plug screw, supports being provided with groups of springs between rear end and the described plug screw of described main valve plug；
The guide pin bushing corresponding with described control port, institute also it is arranged with between described main valve plug with described valve body
State guide pin bushing to be axially linked with described main valve plug, between described guide pin bushing and described valve body, be formed with control oil
Chamber, described control port connects with described control oil pocket.
Further, the front end of described valve body is provided with and the circlip of described spring base corresponding matching.
Further, being provided with regulating piston in described plug screw, described groups of springs is supported and is located at described regulating piston
And between described main valve plug, described plug screw is equiped with adjusting rod also by locking nut, described adjusting rod
Front end offsets with described regulating piston and coordinates.
Further, described groups of springs includes inner spring and is sheathed on the outer spring outside described inner spring；
Described inner spring supports and is located between described main valve plug and described regulating piston, and described outer spring is described to being located at
Between main valve plug and described regulating piston.
Further, the inwall of described guide pin bushing has radially extended guide pin bushing linkage portion, outside described main valve plug
Wall radially extends and the main valve plug linkage portion of described guide pin bushing linkage portion corresponding matching.
Further, between front end outer wall and the described valve body of described main valve plug, it is embedded with main valve plug sealing ring,
Described main valve plug sealing ring is between described first hydraulic fluid port and described second hydraulic fluid port.
Further, it is embedded with plug screw sealing ring between outer wall and the described valve body of described plug screw.
Further, it is embedded with guide pin bushing sealing ring between outer wall and the described valve body of described guide pin bushing.
The invention have the benefit that the balanced valve that the present invention provides, under original state, in groups of springs and
Under the mating reaction of one-way valve spring, the circular cone of main valve plug is in sealing contact with nonreturn valve core, now valve
Mouth is blocked；
Under duty, when to the first hydraulic fluid port oil-feed, hydraulic oil entrance main valve plug is interior and promotes check valve
, there is gap between circular cone and the nonreturn valve core of main valve plug in core so that one-way valve spring is compressed,
Now the first hydraulic fluid port, oil-through hole, valve port and the second hydraulic fluid port sequentially turn on；When the first hydraulic fluid port stops oil-feed,
Under the mating reaction of groups of springs and one-way valve spring, main valve plug is again sealed off contacting with nonreturn valve core, valve
Mouth is again turned off；
When the second hydraulic fluid port pressure is higher than the setting pressure of groups of springs, the circular cone of main valve plug is by second
The reverse oil pressure effect of hydraulic fluid port, forces main valve plug to overcome the elastic force of groups of springs then to move, and the most unidirectional
Spool is due to the barrier effect of limited step so that again form gap between main valve plug and nonreturn valve core,
Now the second hydraulic fluid port, valve port, oil-through hole and the first hydraulic fluid port sequentially turn on, and serve the effect of overflow；
In the case of the oil pressure of the second hydraulic fluid port is less, if to control port oil-feed, making control oil pocket
Pressure raises, and forces guide pin bushing to move after driving main valve plug, also now is able to make main valve plug be formed with nonreturn valve core
Gap, promotes the second hydraulic fluid port and the conducting of the first hydraulic fluid port, and the hydraulic oil in the second hydraulic fluid port still can be back to
In first hydraulic fluid port.
In sum, present configuration advantages of simple, when with telescopic oil cylinder with the use of time not only overflow effect
Fruit is preferable, and oil return is unobstructed, advantageously reduces energy loss, improves work efficiency.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
In Fig. 1:
1, valve body；11, the first hydraulic fluid port；12, the second hydraulic fluid port；13, control port；14, limited step；
2, main valve plug；21, valve port；22, circular cone；23, oil-through hole；24, main valve plug linkage portion；25、
Main valve plug sealing ring；3, nonreturn valve core；4, spring base；41, circlip；5, one-way valve spring；
6, plug screw；61, locking nut；62, adjusting rod；63, plug screw sealing ring；7, groups of springs；71、
Inner spring；72, outer spring；8, guide pin bushing；81, guide pin bushing linkage portion；82, guide pin bushing sealing ring；9, adjust
Joint piston；A, control piston.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the accompanying drawings.
A kind of balanced valve as shown in Figure 1, including valve body 1, the main valve plug 2 that is respectively arranged in valve body 1
With nonreturn valve core 3, valve body 1 is respectively equipped with the first hydraulic fluid port the 11, second hydraulic fluid port 12 and control port 13,
The front end of valve body 1 is provided with spring base 4, and it is spacing that valve body 1 inwall is provided with nonreturn valve core 3 counter stopper
Step 14, nonreturn valve core 3 is movably arranged between limited step 14 and spring base 4, and spring base 4 is with unidirectional
Support between spool 3 and be provided with one-way valve spring 5.
The front end of main valve plug 2 is provided with the valve port 21 corresponding with the second hydraulic fluid port 12, and the outer wall of valve port 21 sets
Have and seal, with nonreturn valve core 3, the circular cone 22 coordinated；The middle part of main valve plug 2 is provided with and the first hydraulic fluid port 11
Corresponding oil-through hole 23, the first hydraulic fluid port 11 is connected with valve port 21 by oil-through hole 23；After valve body 1
End is provided with plug screw 6, supports being provided with groups of springs 7 between rear end and the plug screw 6 of main valve plug 2.
The guide pin bushing 8 corresponding with control port 13, guide pin bushing 8 also it is arranged with between main valve plug 2 with valve body 1
Axially being linked with main valve plug 2, specifically, the inwall of guide pin bushing 8 has radially extended guide pin bushing linkage
Portion 81, the outer wall of main valve plug 2 radially extends the main valve plug linkage with guide pin bushing linkage portion 81 corresponding matching
Portion 24, said structure arranges and makes the linkage effect between guide pin bushing 8 and main valve plug 2 preferable.Guide pin bushing 8 with
Being formed with control oil pocket A between valve body 1, control port 13 connects with controlling oil pocket A.
The balanced valve that the present invention provides, under original state, in groups of springs 7 and the cooperation of one-way valve spring 5
Under effect, the circular cone 22 of main valve plug 2 is in sealing contact with nonreturn valve core 3, and now valve port 21 is sealed
Stifled；Under duty, when to the first hydraulic fluid port 11 oil-feed, hydraulic oil entrance main valve plug 2 is interior and promotes list
To spool 3 so that one-way valve spring 5 is compressed, circular cone 22 and the nonreturn valve core 3 of main valve plug 2
Between gap occurs, now the first hydraulic fluid port 11, oil-through hole 23, valve port 21 and the second hydraulic fluid port 12 are led successively
Logical；When the first hydraulic fluid port 11 stops oil-feed, under the mating reaction of groups of springs 7 and one-way valve spring 5,
Main valve plug 2 is again sealed off contacting with nonreturn valve core 3, and valve port 21 is again turned off.
When the second hydraulic fluid port 12 pressure is higher than the setting pressure of groups of springs 7, the circular cone 22 of main valve plug 2
By the reverse oil pressure effect of the second hydraulic fluid port 12, main valve plug 2 is forced to overcome the elastic force of groups of springs 7 then
Move, and now nonreturn valve core 3 is due to the barrier effect of limited step 14 so that main valve plug 2 and check valve
Gap, now the second hydraulic fluid port 12, valve port 21, oil-through hole 23 and the first hydraulic fluid port is again formed between core 3
11 sequentially turn on, and serve the effect of overflow.
In the case of the oil pressure of the second hydraulic fluid port 12 is less, if to control port 13 oil-feed, making control
The pressure of oil pocket A raises, and forces guide pin bushing 8 to move after driving main valve plug 2, also now is able to make main valve plug 2
Form gap with nonreturn valve core 3, promote the second hydraulic fluid port 12 to turn on the first hydraulic fluid port 11, the second hydraulic fluid port 12
In hydraulic oil still can be back in the first hydraulic fluid port 11.
The front end of valve body 1 is provided with and the circlip 41 of spring base 4 corresponding matching, arranges circlip 41
The most effectively make spring base 4 install more convenient, and fully ensure that the position degree of spring base 4.
Being provided with regulating piston 9 in plug screw 6, groups of springs 7 is supported and is located between regulating piston 9 and main valve plug 2,
Plug screw 6 is equiped with adjusting rod 62, the front end of adjusting rod 62 and regulating piston 9 also by locking nut 61
Offset cooperation.When turn locking nut 61, regulating piston 9 can be adjusted easily by adjusting rod 62
Axial location, thus regulate the setting pressure of groups of springs 7 so that the overflow voltage regulation result of the present invention is more
Good.
Specifically, more stable, reliable in order to ensure groups of springs 7 service behaviour, groups of springs 7 includes
Inner spring 71 and be sheathed on the outer spring 72 outside inner spring 71；Inner spring 71 support be located at main valve plug 2 with
Between regulating piston 9, outer spring 72 supports to be located between main valve plug 2 and regulating piston 9.
The sealing property overall in order to improve the present invention, embedding between front end outer wall and the valve body 1 of main valve plug 2
Being provided with main valve plug sealing ring 25, main valve plug sealing ring 25 is between the first hydraulic fluid port 11 and the second hydraulic fluid port 12；
It is embedded with plug screw sealing ring 63 between outer wall and the valve body 1 of plug screw 6；The outer wall of guide pin bushing 8 and valve body 1 it
Between be embedded with guide pin bushing sealing ring 82.
The above is only the better embodiment of the present invention, therefore all according to described in present patent application scope
Structure, feature and principle done equivalence change or modify, be all included in present patent application scope
In.
Claims (8)
1. a balanced valve, the main valve plug including valve body, being respectively arranged in described valve body and nonreturn valve core,
The first hydraulic fluid port, the second hydraulic fluid port and control port it is respectively equipped with on described valve body, it is characterised in that: described valve
The front end of body is provided with spring base, and it is spacing that described valve interior wall is provided with described nonreturn valve core counter stopper
Step, described nonreturn valve core is movably arranged between described limited step and described spring base, described spring base
And support between described nonreturn valve core and be provided with one-way valve spring；
The front end of described main valve plug is provided with the valve port corresponding with described second hydraulic fluid port, the outer wall of described valve port
It is provided with and seals, with described nonreturn valve core, the circular cone coordinated；The middle part of described main valve plug is provided with and described
The oil-through hole that one hydraulic fluid port is corresponding, described first hydraulic fluid port is connected with described valve port by described oil-through hole；Institute
The rear end stating valve body is provided with plug screw, supports being provided with groups of springs between rear end and the described plug screw of described main valve plug；
The guide pin bushing corresponding with described control port, institute also it is arranged with between described main valve plug with described valve body
State guide pin bushing to be axially linked with described main valve plug, between described guide pin bushing and described valve body, be formed with control oil
Chamber, described control port connects with described control oil pocket.
Balanced valve the most according to claim 1, it is characterised in that: the front end of described valve body be provided with
The circlip of described spring base corresponding matching.
Balanced valve the most according to claim 1, it is characterised in that: it is provided with regulation in described plug screw and lives
Plug, described groups of springs is to being located between described regulating piston and described main valve plug, and described plug screw is also by lock
Jack panel is equiped with adjusting rod, and the front end of described adjusting rod offsets with described regulating piston and coordinates.
Balanced valve the most according to claim 3, it is characterised in that: described groups of springs includes inner spring
And it is sheathed on the outer spring outside described inner spring；Described inner spring supports is located at described main valve plug and described tune
Between joint piston, described outer spring supports and is located between described main valve plug and described regulating piston.
Balanced valve the most according to claim 1, it is characterised in that: the inwall of described guide pin bushing is radially
Being extended with guide pin bushing linkage portion, the outer wall of described main valve plug has radially extended corresponding with described guide pin bushing linkage portion
The main valve plug linkage portion coordinated.
Balanced valve the most according to claim 1, it is characterised in that: the front end outer wall of described main valve plug
And being embedded with main valve plug sealing ring between described valve body, described main valve plug sealing ring is positioned at described first hydraulic fluid port
And between described second hydraulic fluid port.
Balanced valve the most according to claim 1, it is characterised in that: the outer wall of described plug screw is with described
Plug screw sealing ring it is embedded with between valve body.
Balanced valve the most according to claim 1, it is characterised in that: the outer wall of described guide pin bushing is with described
Guide pin bushing sealing ring it is embedded with between valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610453852.5A CN105952702B (en) | 2016-06-20 | 2016-06-20 | A kind of balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610453852.5A CN105952702B (en) | 2016-06-20 | 2016-06-20 | A kind of balanced valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105952702A true CN105952702A (en) | 2016-09-21 |
| CN105952702B CN105952702B (en) | 2018-04-13 |
Family
ID=56907197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610453852.5A Active CN105952702B (en) | 2016-06-20 | 2016-06-20 | A kind of balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105952702B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105193A (en) * | 2017-12-21 | 2018-06-01 | 宁波文泽机电技术开发有限公司 | A kind of balanced valve that can reduce Glais ring frictional force |
| CN108223475A (en) * | 2018-02-05 | 2018-06-29 | 陈艳艳 | A kind of compact one way sequence valve |
| CN108775431A (en) * | 2018-08-22 | 2018-11-09 | 东莞海特帕沃液压科技有限公司 | Balanced valve |
| CN108953267A (en) * | 2018-08-22 | 2018-12-07 | 东莞海特帕沃液压科技有限公司 | A kind of flow type balanced valve |
| CN109611403A (en) * | 2019-01-23 | 2019-04-12 | 洛阳理工学院 | A kind of overflow type hydraulically balanced valve with vibration-damping function |
| US10683879B1 (en) | 2019-01-22 | 2020-06-16 | Sun Hydraulics, Llc | Two-port electrohydraulic counterbalance valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5409040A (en) * | 1993-08-09 | 1995-04-25 | Koomey Companies International, Inc. | Springless pilot operated sequence valve |
| CN101634317A (en) * | 2009-08-21 | 2010-01-27 | 宁波汉商液压有限公司 | Plug-in type balance valve |
| CN101865171A (en) * | 2010-07-02 | 2010-10-20 | 镇江大力液压马达有限责任公司 | Thread cartridge balanced valve |
| CN201963626U (en) * | 2011-02-02 | 2011-09-07 | 卢宇 | Balanced valve with quick closing valve core |
| WO2015099337A1 (en) * | 2013-12-26 | 2015-07-02 | 두산인프라코어 주식회사 | Pressure peak reduction valve for excavator and pressure peak reduction system for excavator comprising same |
| CN205823772U (en) * | 2016-06-20 | 2016-12-21 | 宁波市镇海天地液压有限公司 | A kind of balanced valve |
-
2016
- 2016-06-20 CN CN201610453852.5A patent/CN105952702B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5409040A (en) * | 1993-08-09 | 1995-04-25 | Koomey Companies International, Inc. | Springless pilot operated sequence valve |
| CN101634317A (en) * | 2009-08-21 | 2010-01-27 | 宁波汉商液压有限公司 | Plug-in type balance valve |
| CN101865171A (en) * | 2010-07-02 | 2010-10-20 | 镇江大力液压马达有限责任公司 | Thread cartridge balanced valve |
| CN201963626U (en) * | 2011-02-02 | 2011-09-07 | 卢宇 | Balanced valve with quick closing valve core |
| WO2015099337A1 (en) * | 2013-12-26 | 2015-07-02 | 두산인프라코어 주식회사 | Pressure peak reduction valve for excavator and pressure peak reduction system for excavator comprising same |
| CN205823772U (en) * | 2016-06-20 | 2016-12-21 | 宁波市镇海天地液压有限公司 | A kind of balanced valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105193A (en) * | 2017-12-21 | 2018-06-01 | 宁波文泽机电技术开发有限公司 | A kind of balanced valve that can reduce Glais ring frictional force |
| CN108223475A (en) * | 2018-02-05 | 2018-06-29 | 陈艳艳 | A kind of compact one way sequence valve |
| CN108775431A (en) * | 2018-08-22 | 2018-11-09 | 东莞海特帕沃液压科技有限公司 | Balanced valve |
| CN108953267A (en) * | 2018-08-22 | 2018-12-07 | 东莞海特帕沃液压科技有限公司 | A kind of flow type balanced valve |
| US10683879B1 (en) | 2019-01-22 | 2020-06-16 | Sun Hydraulics, Llc | Two-port electrohydraulic counterbalance valve |
| WO2020154045A1 (en) * | 2019-01-22 | 2020-07-30 | Sun Hydraulics, Llc | Two-port electrohydraulic counterbalance valve |
| CN109611403A (en) * | 2019-01-23 | 2019-04-12 | 洛阳理工学院 | A kind of overflow type hydraulically balanced valve with vibration-damping function |
| CN109611403B (en) * | 2019-01-23 | 2023-08-15 | 洛阳理工学院 | Overflow type hydraulic balance valve with vibration reduction function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105952702B (en) | 2018-04-13 |
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