CN107763000A - Inverse proportion flow valve - Google Patents
Inverse proportion flow valve Download PDFInfo
- Publication number
- CN107763000A CN107763000A CN201711197556.4A CN201711197556A CN107763000A CN 107763000 A CN107763000 A CN 107763000A CN 201711197556 A CN201711197556 A CN 201711197556A CN 107763000 A CN107763000 A CN 107763000A
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- Prior art keywords
- valve
- throttling
- valve body
- flow
- mouths
- Prior art date
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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
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
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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 inverse proportion flow valve, include valve body, P mouths and A mouths 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 push rod, the push rod is offseted through the valve pocket with throttling valve core, and the bottom 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 in the side wall of throttling valve core, when proportion electro-magnet powers off, 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 mouths；When proportion electro-magnet is powered, throttling control hole is progressively covered by the sealing convex shoulder of valve body, and when giving maximum voltage, sealing convex shoulder can be completely covered by the control hole that throttles.It the advantage is that：It is rational in infrastructure, compact, small volume, control sensitive.
Description
Technical field
The present invention relates to flow valve manufacturing technology field, especially inverse proportion flow 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, is not influenceed by the fluctuation of load, so
It is only relevant 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, is influenceed without being fluctuated by load pressure, finally realizes the conjunction of the pressure, flow of multiple different loads oil circuits in hydraulic system
Reason distribution, ensure 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, the product can be by controlling ratio electromagnet current size, the flow of proportion adjustment C mouths to A mouths, and flows
Size is measured not by A mouth 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. in order to ensure that fluid flows to the pressure difference that caused pressure drop is not adjusted to sliding spool and pressure spring in A mouths in C mouths
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 sensitive inverse proportion flow valve.
Technical scheme is used by the present invention solves above-mentioned technical problem：
Inverse proportion flow valve, include valve body, P mouths and A mouths are offered on valve body, the top of valve body is equipped with valve pocket, should
The top of valve pocket is equipped with proportion electro-magnet, and armature is provided with proportion electro-magnet, and the lower surface of armature offsets with a push rod, should
Push rod is offseted through the valve pocket with throttling valve core, and the bottom of throttling valve core is stretched into valve body, throttling valve core and the valve body it
Between be provided with throttling spring；
Throttling control hole is offered in the side wall of throttling valve core, when proportion electro-magnet powers off, 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 mouths；When proportion electro-magnet is powered, throttling valve core to
Lower movement, throttling control hole is progressively covered by the sealing convex shoulder of valve body, and when proportion electro-magnet gives maximum voltage, sealing is convex
Shoulder can be completely covered by the control hole that throttles；
Sealing convex shoulder is located at below through-flow chamber, and through flow hole is located on sealing convex shoulder vertically；
Pressure difference compensation valve element is equipped with the bottom of valve body, compensation bullet is provided between pressure difference compensation valve element and the valve body
Spring, pressure difference compensation valve element can move up the openings of sizes for changing A mouths under P mouths and A mouth differential pressure actions.
The technical measures of optimization also 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 jump ring.
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 bottom of above-mentioned throttling valve core is inserted in the pressure difference compensation valve element.
The bottom of above-mentioned valve body is provided with back-up 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.
Valve seals are equipped with above-mentioned body base outer wall.
The both sides of above-mentioned valve seals are respectively arranged with baffle ring.
Inverse proportion flow valve of the present invention, rational in infrastructure, it makes the structure of flow valve more tight by the improvement in structure
Gather, volume is smaller.When proportion electro-magnet obtains electric, throttling control hole progressively staggers with through-flow chamber to be covered by sealing convex shoulder, is throttled
The area of passage of control hole and through-flow chamber progressively reduces, and pressure difference compensation valve element overcomes the elastic force of counterbalance spring to move up, according to P mouths
Change the aperture of A mouths with the size of A mouth pressure differences, adjust the pressure difference before and after throttling control hole, make stability of flow not by load effect；
When proportion electro-magnet powers off, throttling control hole and through-flow chamber all-pass, output flow maximum；Given proportion electro-magnet maximum voltage,
Then throttling control hole is fully sealed convex shoulder covering, A mouths not output flow.
Brief description of the drawings
Fig. 1 is the cross section structure diagram 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 accompanying drawing embodiment.
It is as shown in Figure 1 to Figure 3 the structural representation of the present invention,
Reference therein is：P mouths, A mouths, valve body 1, through-flow chamber 1a, through flow hole 1b, Pressure difference feedback chamber 1c, boss 11,
Back-up ring 12, valve seals 13, baffle ring 13a, sealing convex shoulder 14, valve pocket 2, groove 21, jump ring 22, external screw thread 23, valve pocket sealing
Circle 24, proportion electro-magnet 3, armature 4, push rod 5, throttling valve core 6, throttling control hole 6a, throttling spring 61, pressure difference compensation valve element 7,
Counterbalance spring 71.
As shown in Figure 1 to Figure 3,
Inverse proportion flow valve, include valve body 1, P mouths and A mouths are offered on valve body 1, the top of valve body 1 is equipped with valve pocket
2, the top of the valve pocket 2 is equipped with proportion electro-magnet 3, and armature 4, the lower surface of armature 4 and a top are provided with proportion electro-magnet 3
Bar 5 is offseted, and the push rod 5 is offseted through the valve pocket 2 with throttling valve core 6, and the bottom of throttling valve core 6 is stretched into valve body 1, choke valve
Throttling spring 61 is provided between core 6 and the valve body 1；
Throttling control hole 6a is offered in the side wall of throttling valve core 6, when proportion electro-magnet 3 powers off, 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 mouths；
When proportion electro-magnet 3 is powered, throttling valve core 6 moves down, and throttling control hole 6a is progressively convex by the sealing on valve body 1
Shoulder 14 is covered, and when proportion electro-magnet 3 gives maximum voltage, sealing convex shoulder 14 can be completely covered by the control hole 6a that throttles；
Sealing convex shoulder 14 is located at below through-flow chamber 1a, and through flow hole 1b is located on sealing convex shoulder 15 vertically；
Pressure difference compensation valve element 7 is equipped with the bottom of valve body 1, benefit is provided between pressure difference compensation valve element 7 and the valve body 1
Spring 71 is repaid, pressure difference compensation valve element 7 can move up change compensation runner hole 7a and T holes phase under P mouths and A mouth differential pressure actions
Logical openings of sizes.
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 lower end phase of armature 4
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 jump ring 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 bottom of throttling valve core 6 is inserted in the pressure difference compensation valve element 7；It is so designed that, structure is more tight
Gather.
In embodiment, the bottom of valve body 1 is provided with back-up ring 12；The lower limit of pressure difference compensation valve element 7 is limited using back-up ring 12,
It is simple in construction, 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, valve seals 13 are equipped with the bottom outer wall of valve body 1.
In embodiment, the both sides of valve seals 13 are respectively arranged with baffle ring 13a.
After the installation of this flow valve, the valve pocket sealing ring 24, the valve seals 13 that are set by outside are formed with installation position
Sealing；The axial displacement of limiting valve body sealing ring 13 is capable of in baffle ring 13a setting, during avoiding flow valve Cha Installed, sealing ring
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；Because 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 all-pass, at this moment, area of passage is maximum between P mouths and A mouths.
When proportion electro-magnet 3 is powered, armature 4 is moved downward, and throttling valve core 6 is overcome into throttling spring by push rod 5
61 elastic force pushes down on, and the throttling control hole 6a in throttling valve core 6 is progressively staggered with the through-flow chamber 1a on valve body 1 and is sealed
Convex shoulder 15 progressively covers, and at this moment, the fluid of P mouths flows into throttling valve core 6 from the center of pressure difference compensation valve element 7, then from throttling valve core 6
On throttling control hole 6a flow to A mouths through through-flow chamber 1a, through flow hole 1b, Pressure difference feedback chamber 1c.The electricity led on proportion electro-magnet 3
Pressure it is bigger, armature 4 it is also bigger to bottom offset, throttle control hole 6a and through-flow chamber 1a between conducting area it is also smaller, P mouths arrive
The flow of A mouths is naturally also smaller, and therefore, flow and the power-on voltage on proportion electro-magnet 3 of P mouths to A mouths are in inverse ratio.
Proportion electro-magnet 3 is powered, after P mouths to A mouths turn on, when the pressure of A mouths reduces the (pressure i.e. in Pressure difference feedback chamber 1c
Reduce), then increase of making a concerted effort upward on pressure difference compensation valve element 7, pressure difference compensation valve element 7 move upwards, make A mouths and Pressure difference feedback chamber
Circulation passage between 1c reduces, until the pressure in Pressure difference feedback chamber 1c rises, pressure difference compensation valve element 7 reaches new balance,
So ensure that the pressure difference before and after throttling control hole 6a is constant.On the contrary, when the pressure of A mouths increases (i.e. in Pressure difference feedback chamber 1c
Pressure increase), then upward on pressure difference compensation valve element 7 to make a concerted effort to reduce, pressure difference compensation valve element 7 moves downward, and makes A mouths and pressure difference
Circulation passage increase between feedback cavity 1c, until the pressure in Pressure difference feedback chamber 1c declines, pressure difference compensation valve element 7 reaches new
Balance.During A mouth pressure changes, the position of throttling valve core 6 keeps constant, and pressure difference compensation valve element 7 makes pressure difference remain dynamic
Balance, makes this flow valve in the case of voltage constant, output flow is not by A mouth pressure variations influences.
The given maximum voltage of proportion electro-magnet 3, throttling valve core 6 are moved down into maximum position, and throttling control hole 6a is whole
Covered by sealing convex shoulder 15, P to A cut-offs, no flow output, now pressure compensation valve element 7 is moved upwards, and A mouths are all covered
Firmly.
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. inverse proportion flow valve, including valve body (1), P mouths and A mouths, described valve body (1) are offered on described valve body (1)
Top be equipped with valve pocket (2), the top of the valve pocket (2) is equipped with proportion electro-magnet (3), in described proportion electro-magnet (3)
Be provided with armature (4), lower surface and the push rod (5) of described armature (4) offset, the push rod (5) through the valve pocket (2) with
Throttling valve core (6) is offseted, and the bottom of described throttling valve core (6) is stretched into valve body (1), described throttling valve core (6) with it is described
Throttling spring (61) is provided between valve body (1)；
Throttling control hole (6a) is offered in the side wall of described throttling valve core (6), it is described when proportion electro-magnet (3) powers off
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；When proportion electro-magnet (3) is powered, described throttling valve core (6) moves down, and the throttling control hole (6a) is progressively
Covered by the sealing convex shoulder (14) on the valve body (1), when proportion electro-magnet (3) gives maximum voltage, seal convex shoulder
(14) control hole (6a) that throttles can be completely covered by；
The sealing convex shoulder (14) is located at below the through-flow chamber (1a), and it is convex that the through flow hole (1b) is located at the sealing vertically
On shoulder (14)；
Pressure difference compensation valve element (7), described pressure difference compensation valve element (7) and the valve are equipped with the bottom of described valve body (1)
It is provided with counterbalance spring (71) between body (1), the pressure difference compensation valve element (7) can be to moving up under P mouths and A mouth differential pressure actions
The dynamic openings of sizes for changing A mouths.
2. inverse proportion flow valve according to claim 1, it is characterized in that：The section of described armature (4) is in "convex" shaped
Structure, the upper end of described valve pocket (2) are provided with the groove (21) being adapted with the armature (4) lower end.
3. inverse proportion flow valve according to claim 2, it is characterized in that：The section of described throttling valve core (6) is in T shape
Structure.
4. inverse proportion flow valve according to claim 3, it is characterized in that：The lower end of described valve pocket (2) and the valve body
(1) it is fixed by jump ring (22) between.
5. inverse proportion flow valve according to claim 4, it is characterized in that：The external wall of upper portion of described valve body (1) is provided with
Boss (11), the lower end of described valve pocket (2) and the upper surface of the boss (11) offset.
6. inverse proportion flow valve according to claim 5, it is characterized in that：The bottom insertion institute of described throttling valve core (6)
State in pressure difference compensation valve element (7).
7. inverse proportion flow valve according to claim 6, it is characterized in that：The bottom of described valve body (1) is provided with back-up ring
(12)。
8. inverse proportion flow valve according to claim 7, it is characterized in that：The lower external of described valve pocket (2) is formed with outer
Screw thread (23), valve pocket sealing ring (24) is provided with above described external screw thread (23).
9. inverse proportion flow valve according to claim 8, it is characterized in that：Set in the bottom outer wall of described valve body (1)
There are valve seals (13).
10. inverse proportion flow valve according to claim 9, it is characterized in that：The both sides of described valve seals (13) point
Baffle ring (13a) is not provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711197556.4A CN107763000A (en) | 2017-11-25 | 2017-11-25 | Inverse proportion flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711197556.4A CN107763000A (en) | 2017-11-25 | 2017-11-25 | Inverse proportion flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107763000A true CN107763000A (en) | 2018-03-06 |
Family
ID=61275267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711197556.4A Withdrawn CN107763000A (en) | 2017-11-25 | 2017-11-25 | Inverse proportion flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107763000A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869436A (en) * | 2018-09-17 | 2018-11-23 | 宁波真格液压科技有限公司 | A kind of oil distributing valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 CN201711197556.4A patent/CN107763000A/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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869436A (en) * | 2018-09-17 | 2018-11-23 | 宁波真格液压科技有限公司 | A kind of oil distributing valve |
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| 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180306 |