CN107965488A - A kind of plug-in proportional flow control valve - Google Patents
A kind of plug-in proportional flow control valve Download PDFInfo
- Publication number
- CN107965488A CN107965488A CN201711197526.3A CN201711197526A CN107965488A CN 107965488 A CN107965488 A CN 107965488A CN 201711197526 A CN201711197526 A CN 201711197526A CN 107965488 A CN107965488 A CN 107965488A
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- China
- Prior art keywords
- valve
- throttling
- valve body
- mouthfuls
- plug
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a kind of plug-in proportional flow control valve, include valve body, P mouthfuls, T mouthfuls and A mouthfuls are offered on valve body, the top of valve body is equipped with valve pocket, and the top of valve pocket is equipped with proportion electro-magnet, armature is provided with proportion electro-magnet, the lower surface of armature offsets with a mandril, the mandril offsets through the valve pocket with throttling valve core, and the lower part of throttling valve core is stretched into valve body, and throttling spring is provided between throttling valve core and the valve body；Throttling control hole is offered on the side wall of throttling valve core, when proportion electro-magnet is powered, throttling through-flow chamber, through flow hole and Pressure difference feedback chamber of the control hole through being sequentially connected on valve body are connected with A mouthfuls；Pressure difference compensation spool is equipped with the lower part of valve body, counterbalance spring is provided between pressure difference compensation spool and the valve body, compensation runner hole is offered on the side wall of pressure difference compensation spool, when proportion electro-magnet powers off, compensation runner hole is connected with T mouthfuls.It the advantage is that：Rational in infrastructure, compact, small, control is sensitive.
Description
Technical field
The present invention relates to flow valve manufacturing technology field, a kind of especially plug-in proportional flow control valve.
Background technology
In recent years, proportional flow control valve should in the equipment such as truck-mounted crane, high-altitude operation vehicle, tractor rotary tillage plough, electri forklift
With more and more.Pressure difference is constant before and after proportional flow control valve can realize flow valve inlet and outlet, from the influence of the fluctuation of load, so
It is only related with the aperture of the valve port to flow through the uninterrupted of the flow valve port, so as to realize that through-current capacity size is servo-actuated ratio control
System, and from the influence of load pressure fluctuation, finally realize the conjunction of the pressure, flow of multiple and different load oil circuits in hydraulic system
Reason distribution, ensures the normal operation of whole hydraulic system functions.
As Patent No. 201521007458.6 entitled " a kind of solenoid-operated proportional flow valve " patent in disclose one
Kind proportional flow control valve, which can be by controlling ratio electromagnet current size, the flow that C mouthfuls to A mouthfuls of proportion adjustment, and flows
Size is measured from A mouthfuls of pressure variations influences.But there is also following shortcoming for this product：
1. flow-rate control section includes valve pocket, throttling valve core, valve seat, sliding spool, spring base etc., contained part is more, and
These parts are mutually slidably socketed together, higher to machining accuracy, matching requirements, add production cost, and easily produce
Failure；
2. the pressure drop produced is flowed in A mouthfuls not to the pressure difference of sliding spool and pressure spring adjusting in order to ensure fluid at C mouthfuls
Having an impact, ensure the degree of regulation of proportional flow control valve, it is desirable to spring base endoporus and throttling valve core endoporus are sufficiently large, but this
Product spring base and valve seat are all socketed in sliding spool endoporus, and sliding spool is socketed in valve pocket endoporus again, and throttling valve core is socketed in
In valve seat endoporus, such structure adds radial dimension and axial dimension, causes volume larger, limits application.
The content of the invention
The technical problem to be solved by the invention for the present situation of prior art is to provide rational in infrastructure, compact, volume
It is small, control a kind of sensitive plug-in proportional flow control valve.
Technical solution is used by the present invention solves above-mentioned technical problem：
A kind of plug-in proportional flow control valve, includes valve body, P mouthfuls, T mouthfuls and A mouthfuls is offered on valve body, the top of valve body
Be equipped with valve pocket, the top of the valve pocket is equipped with proportion electro-magnet, is provided with armature in proportion electro-magnet, the lower surface of armature with
One mandril offsets, which offsets through the valve pocket with throttling valve core, and the lower part of throttling valve core is stretched into valve body, throttling valve core
Throttling spring is provided between the valve body；
Throttling control hole is offered on the side wall of throttling valve core, when proportion electro-magnet is powered, throttling control hole is through on valve body
Through-flow chamber, through flow hole and the Pressure difference feedback chamber being sequentially connected are connected with A mouthfuls；
Pressure difference compensation spool is equipped with the lower part of valve body, compensation bullet is provided between pressure difference compensation spool and the valve body
Spring, compensation runner hole is offered on the side wall of pressure difference compensation spool, and when proportion electro-magnet powers off, compensation runner hole is connected with T mouthfuls
It is logical.
The technical measures of optimization further include：
The section of above-mentioned armature is in "convex" shaped structure, and the upper end of valve pocket is provided with what is be adapted with the armature lower end
Groove.
The section structure in T shape of above-mentioned throttling valve core.
Fixed between the lower end of above-mentioned valve pocket and the valve body by clamp spring.
The external wall of upper portion of above-mentioned valve body is provided with boss, and the lower end of valve pocket offsets with the upper surface of the boss.
The lower part of above-mentioned throttling valve core is inserted into the pressure difference compensation spool.
The bottom of above-mentioned valve body is provided with baffle ring.
The lower external of above-mentioned valve pocket is formed with external screw thread, and externally threaded top is provided with valve pocket sealing ring.
The first valve seals are equipped with the middle part outer wall of above-mentioned valve body, second is equipped with the bottom outer wall of valve body
Valve seals.
The both sides of the first above-mentioned valve seals are respectively arranged with baffle ring.
A kind of plug-in proportional flow control valve of the present invention, rational in infrastructure, it makes the structure of flow valve by the improvement in structure
It is more compact, volume smaller.When proportion electro-magnet powers off, throttling control hole staggers with through-flow chamber, and P mouthfuls are ended with A mouthfuls, and pressure difference
Compensating spool overcomes the elastic force of counterbalance spring to move up, and P mouthfuls turn on T mouthfuls；When proportion electro-magnet is powered, armature moves down and promotes section
Flow valve core moves down, so that P mouthfuls turn on A mouthfuls, can control the aperture of throttling control hole, pressure by the size of voltage at this time
Poor compensating spool then reaches dynamic equilibrium and keeps the constant of pressure difference, and the control of this proportional flow control valve is sensitive.
Brief description of the drawings
Fig. 1 is the schematic cross-sectional view of the present invention；
Fig. 2 is I portions enlarged drawing in Fig. 1；
Fig. 3 is the hydraulic principle figure of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with attached drawing embodiment.
It is as shown in Figure 1 to Figure 3 the structure diagram of the present invention,
Reference numeral therein is：P mouthfuls, T mouthfuls, A mouthfuls, it is valve body 1, through-flow chamber 1a, through flow hole 1b, Pressure difference feedback chamber 1c, convex
It is platform 11, baffle ring 12, the first valve seals 13, baffle ring 13a, the second valve seals 14, valve pocket 2, groove 21, clamp spring 22, outer
Screw thread 23, valve pocket sealing ring 24, proportion electro-magnet 3, armature 4, mandril 5, throttling valve core 6, throttling control hole 6a, throttling spring
61st, pressure difference compensation spool 7, compensation runner hole 7a, counterbalance spring 71.
As shown in Figure 1 to Figure 3,
A kind of plug-in proportional flow control valve, includes valve body 1, and P mouthfuls, T mouthfuls and A mouthfuls are offered on valve body 1, valve body 1
Top is equipped with valve pocket 2, and the top of the valve pocket 2 is equipped with proportion electro-magnet 3, and armature 4, armature 4 are provided with proportion electro-magnet 3
Lower surface offset with a mandril 5, which offsets through the valve pocket 2 with throttling valve core 6, and the lower part of throttling valve core 6 is stretched into
In valve body 1, throttling spring 61 is provided between throttling valve core 6 and the valve body 1；
Throttling control hole 6a is offered on the side wall of throttling valve core 6, when proportion electro-magnet 3 is powered, throttling control hole 6a warps
Through-flow chamber 1a, through flow hole 1b and the Pressure difference feedback chamber 1c being sequentially connected on valve body 1 are connected with A mouthfuls；
Pressure difference compensation spool 7 is equipped with the lower part of valve body 1, benefit is provided between pressure difference compensation spool 7 and the valve body 1
Spring 71 is repaid, compensation runner hole 7a is offered on the side wall of pressure difference compensation spool 7, when proportion electro-magnet 3 powers off, compensates runner hole
7a is connected with T mouthfuls.
In embodiment, the section of armature 4 is in "convex" shaped structure, and the upper end of valve pocket 2 is provided with and the 4 lower end phase of armature
The groove 21 of adaptation；It is so designed that, structure is more compact.
In embodiment, the section structure in T shape of throttling valve core 6.
In embodiment, fixed between the lower end of valve pocket 2 and the valve body 1 by clamp spring 22.
In embodiment, the external wall of upper portion of valve body 1 is provided with boss 11, the lower end of valve pocket 2 and the upper surface phase of the boss 11
Support.
In embodiment, the lower part of throttling valve core 6 is inserted into the pressure difference compensation spool 7；It is so designed that, structure is more tight
Gather.
In embodiment, the bottom of valve body 1 is provided with baffle ring 12；The lower limit of pressure difference compensation spool 7 is limited using baffle ring 12,
It is simple in structure, it is easy for installation.
In embodiment, the lower external of valve pocket 2 is formed with external screw thread 23, and the top of external screw thread 23 is provided with valve pocket sealing ring
24。
In embodiment, the first valve seals 13 are equipped with the middle part outer wall of valve body 1, it is embedding in the bottom outer wall of valve body 1
It is equipped with the second valve seals 14.
In embodiment, the both sides of the first valve seals 13 are respectively arranged with baffle ring 13a.
After the installation of this flow valve, the valve pocket sealing ring 24, the first valve seals 13 and the second valve that are set by outside
Body sealing ring 14 is formed with installation position and sealed；The setting of baffle ring 13a can limit the axial displacement of the first valve seals 13,
During avoiding flow valve Cha Installed, the first valve seals 13 depart from required installation site, ensure that the reliability of sealing.
Operation principle：
When proportion electro-magnet 3 powers off, top is corresponding to upper limit upwards by throttling valve core 6 for throttling spring 61, at this moment,
Armature 4 is also at upper limit；Since throttling valve core 6 is located at upper limit, throttling control hole 6a in throttling valve core 6 with valve body 1
Through-flow chamber 1a stagger, at this moment, end between P mouthfuls and A mouthfuls.P mouthfuls of pressure are acted on pressure difference compensation spool 7, promote pressure difference to mend
Repaying spool 7 overcomes counterbalance spring 71 to move upwards, the compensation runner hole 7a on pressure difference compensation spool 7 is connected with T mouthfuls, P mouthfuls
Fluid be flowed into T mouthfuls.
When proportion electro-magnet 3 is powered, armature 4 moves downward, and throttling valve core 6 is overcome throttling spring by mandril 5
61 elastic force pushes down on, and the throttling control hole 6a and through-flow chamber 1a on valve body 1 in throttling valve core 6 is progressively turned on, at this moment, P
The fluid of mouth flows into throttling valve core 6 from the center of pressure difference compensation spool 7, then from the throttling control hole 6a in throttling valve core 6 through logical
Stream chamber 1a, through flow hole 1b, Pressure difference feedback chamber 1c flow to A mouthfuls.The voltage led on proportion electro-magnet 3 is bigger, armature 4 to bottom
Shifting is also bigger, and the conducting area between the control hole 6a and through-flow chamber 1a that throttles is also bigger, and P mouthfuls to A mouthfuls of flow is naturally also bigger,
Therefore, P mouthfuls to A mouthfuls of flow and power-on voltage on proportion electro-magnet 3 are proportional.
Proportion electro-magnet 3 is powered, after P mouthfuls to A mouthfuls conductings, when A mouthfuls of pressure reduce the (pressure i.e. in Pressure difference feedback chamber 1c
Reduce), then increase of making a concerted effort upward on pressure difference compensation spool 7, pressure difference compensation spool 7 move upwards, make A mouthfuls and Pressure difference feedback chamber
Circulation passage between 1c reduces, meanwhile, turned between P mouthfuls and T mouthfuls, until the pressure in Pressure difference feedback chamber 1c rises, pressure difference
Compensating spool 7 reaches new balance, so ensures that the pressure difference before and after throttling control hole 6a is constant.On the contrary, when A mouthfuls of pressure
Increase (the pressure increase i.e. in Pressure difference feedback chamber 1c), then reduction of making a concerted effort upward on pressure difference compensation spool 7, pressure difference compensation spool
7 move downward, and increase the circulation passage between A mouthfuls and Pressure difference feedback chamber 1c, until the pressure in Pressure difference feedback chamber 1c declines,
Pressure difference compensation spool 7 reaches new balance.During A mouthfuls of pressure changes, 6 position of throttling valve core remains unchanged, pressure difference compensation valve
Core 7 makes pressure difference remain dynamic equilibrium, makes this flow valve in the case of voltage constant, and output flow becomes from A mouthfuls of pressure
Changing influences.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (10)
1. a kind of plug-in proportional flow control valve, includes valve body (1), P mouthfuls, T mouthfuls and A mouthfuls is offered on the valve body (1),
The top of the valve body (1) is equipped with valve pocket (2), and the top of the valve pocket (2) is equipped with proportion electro-magnet (3), the ratio
Armature (4) is provided with example electromagnet (3), lower surface and the mandril (5) of the armature (4) offset, which runs through
The valve pocket (2) offsets with throttling valve core (6), and the lower part of the throttling valve core (6) is stretched into valve body (1), the throttling
Throttling spring (61) is provided between spool (6) and the valve body (1)；
Throttling control hole (6a) is offered on the side wall of the throttling valve core (6), it is described when proportion electro-magnet (3) is powered
Throttle control hole (6a) through-flow chamber (1a), through flow hole (1b) and Pressure difference feedback chamber (1c) and A through being sequentially connected on valve body (1)
Mouth is connected；
Pressure difference compensation spool (7), the pressure difference compensation spool (7) and the valve are equipped with the lower part of the valve body (1)
Counterbalance spring (71) is provided between body (1), compensation runner hole is offered on the side wall of the pressure difference compensation spool (7)
(7a), when proportion electro-magnet (3) powers off, the compensation runner hole (7a) is connected with T mouthfuls.
2. a kind of plug-in proportional flow control valve according to claim 1, it is characterized in that：The section of the armature (4) is in
"convex" shaped structure, the upper end of the valve pocket (2) are provided with the groove (21) being adapted with the armature (4) lower end.
3. a kind of plug-in proportional flow control valve according to claim 2, it is characterized in that：The throttling valve core (6) is cut
Face structure in T shape.
4. a kind of plug-in proportional flow control valve according to claim 3, it is characterized in that：The lower end of the valve pocket (2) with
It is fixed by clamp spring (22) between the valve body (1).
5. a kind of plug-in proportional flow control valve according to claim 4, it is characterized in that：Outside the top of the valve body (1)
Wall is provided with boss (11), and the lower end of the valve pocket (2) and the upper surface of the boss (11) offset.
6. a kind of plug-in proportional flow control valve according to claim 5, it is characterized in that：Under the throttling valve core (6)
Portion is inserted into the pressure difference compensation spool (7).
7. a kind of plug-in proportional flow control valve according to claim 6, it is characterized in that：The bottom of the valve body (1) is set
It is equipped with baffle ring (12).
8. a kind of plug-in proportional flow control valve according to claim 7, it is characterized in that：Outside the lower part of the valve pocket (2)
Portion is formed with external screw thread (23), and valve pocket sealing ring (24) is provided with above the external screw thread (23).
9. a kind of plug-in proportional flow control valve according to claim 8, it is characterized in that：Outside the middle part of the valve body (1)
The first valve seals (13) are equipped with wall, the second valve seals are equipped with the bottom outer wall of the valve body (1)
(14)。
10. a kind of plug-in proportional flow control valve according to claim 9, it is characterized in that：First valve seals
(13) both sides are respectively arranged with baffle ring (13a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711197526.3A CN107965488A (en) | 2017-11-25 | 2017-11-25 | A kind of plug-in proportional flow control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711197526.3A CN107965488A (en) | 2017-11-25 | 2017-11-25 | A kind of plug-in proportional flow control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107965488A true CN107965488A (en) | 2018-04-27 |
Family
ID=61998577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711197526.3A Withdrawn CN107965488A (en) | 2017-11-25 | 2017-11-25 | A kind of plug-in proportional flow control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107965488A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985472A (en) * | 2019-12-30 | 2020-04-10 | 广东力源液压机械有限公司 | Cartridge valve of hydraulic pile driving system and dynamic output control method thereof |
| CN114017409A (en) * | 2021-11-02 | 2022-02-08 | 太重集团榆次液压工业有限公司 | Low-torque two-way cartridge flow control valve |
| WO2022077765A1 (en) * | 2020-10-15 | 2022-04-21 | 深圳市安保科技有限公司 | Proportional flow valve |
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| CN201461573U (en) * | 2009-08-06 | 2010-05-12 | 上海科鑫电液控制设备有限公司 | Proportional flow valve |
| US20110197979A1 (en) * | 2010-01-23 | 2011-08-18 | Robert Bosch Gmbh | Flow Control Valve with Damping Chamber |
| CN102428304A (en) * | 2009-04-30 | 2012-04-25 | Hydac流体技术有限公司 | Proportional throttle valve |
| CN103591070A (en) * | 2013-08-21 | 2014-02-19 | 西安交通大学 | Thread direct-drive-type electro-hydraulic proportional flow valve of permanent-magnetic alternating-current servo motor |
| CN103857925A (en) * | 2011-03-22 | 2014-06-11 | 派克汉尼芬公司 | Electro-proportional pilot operated poppet valve with pressure compensation |
-
2017
- 2017-11-25 CN CN201711197526.3A patent/CN107965488A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102428304A (en) * | 2009-04-30 | 2012-04-25 | Hydac流体技术有限公司 | Proportional throttle valve |
| CN201461573U (en) * | 2009-08-06 | 2010-05-12 | 上海科鑫电液控制设备有限公司 | Proportional flow valve |
| US20110197979A1 (en) * | 2010-01-23 | 2011-08-18 | Robert Bosch Gmbh | Flow Control Valve with Damping Chamber |
| CN103857925A (en) * | 2011-03-22 | 2014-06-11 | 派克汉尼芬公司 | Electro-proportional pilot operated poppet valve with pressure compensation |
| CN103591070A (en) * | 2013-08-21 | 2014-02-19 | 西安交通大学 | Thread direct-drive-type electro-hydraulic proportional flow valve of permanent-magnetic alternating-current servo motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985472A (en) * | 2019-12-30 | 2020-04-10 | 广东力源液压机械有限公司 | Cartridge valve of hydraulic pile driving system and dynamic output control method thereof |
| WO2022077765A1 (en) * | 2020-10-15 | 2022-04-21 | 深圳市安保科技有限公司 | Proportional flow valve |
| CN114017409A (en) * | 2021-11-02 | 2022-02-08 | 太重集团榆次液压工业有限公司 | Low-torque two-way cartridge flow control valve |
| CN114017409B (en) * | 2021-11-02 | 2023-07-28 | 太重集团榆次液压工业有限公司 | Low-torque two-way plug-in type flow control valve |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180427 |
|
| WW01 | Invention patent application withdrawn after publication |