CN204004647U - The integrated direct-acting type proportional overflow valve of pressure closed loop control figure - Google Patents
The integrated direct-acting type proportional overflow valve of pressure closed loop control figure Download PDFInfo
- Publication number
- CN204004647U CN204004647U CN201420474541.3U CN201420474541U CN204004647U CN 204004647 U CN204004647 U CN 204004647U CN 201420474541 U CN201420474541 U CN 201420474541U CN 204004647 U CN204004647 U CN 204004647U
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- pressure
- closed loop
- loop control
- magnet
- valve
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- Withdrawn - After Issue
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Abstract
The utility model discloses the integrated direct-acting type proportional overflow valve of pressure closed loop control figure, comprise valve body, proportion electro-magnet, pressure transducer and pressure closed loop control figure integrated form amplifier, the left and right sides of valve body is separately installed with proportion electro-magnet and pressure transducer, pressure closed loop control figure integrated form amplifier is connected with pressure transducer by signal conductor, proportion electro-magnet front end is provided with push rod, push rod acts on spool, between spool and valve seat, be provided with Returnning spring, spool and Returnning spring are all placed in guide sleeve, guide sleeve is arranged on valve seat and with spool and coordinates, valve seat front aperture is communicated with pressure transducer, valve body bottom has pressure hydraulic fluid port and return opening, pressure hydraulic fluid port communicates with valve seat front aperture, return opening communicates with the oil duct in Returnning spring and proportion electro-magnet respectively.Make that stable, highly sensitive, the stagnant ring of product work is little, dynamic quality is high, reliability is high, Returnning spring shields, the valve pressure unloading in the time of can reducing zero-signal electric current.
Description
Technical field
The utility model relates to a kind of relief valve, relates in particular to the integrated direct-acting type proportional overflow valve of a kind of pressure closed loop control figure.
Background technique
Common direct-acting type proportional overflow valve adoption rate solenoid actuated, it is larger that the adjusting pressure of its valve is affected by overflow variable quantity and temperature, is also subject to proportion electro-magnet sluggishness and amplifier temperature and floats impact, makes valve override pressure larger, sluggish large, less stable.This makes the Performance And Reliability of proportional pressure control valve not reach high-pressure and high-precision application requirements.
Therefore,, for addressing the above problem, spy provides a kind of new technological scheme.
Model utility content
The utility model provides a kind of override pressure little, and sluggish little, stability is high, the integrated direct-acting type proportional overflow valve of pressure closed loop control figure that dynamic quality is good.
The technical solution adopted in the utility model is:
The integrated direct-acting type proportional overflow valve of pressure closed loop control figure, comprise spool, valve seat, valve body, proportion electro-magnet, pressure transducer and pressure closed loop control figure integrated form amplifier, the left and right sides of described valve body is separately installed with proportion electro-magnet and pressure transducer, described pressure closed loop control figure integrated form amplifier is fixed on proportion electro-magnet, described pressure closed loop control figure integrated form amplifier is connected with pressure transducer by signal conductor, described proportion electro-magnet front end is provided with push rod, described push rod acts on spool, between described spool and valve seat, be provided with Returnning spring, described spool and Returnning spring are all placed in guide sleeve, described guide sleeve is arranged on valve seat and with spool and coordinates, described valve seat front aperture is communicated with pressure transducer, described valve body bottom has pressure hydraulic fluid port and return opening, described pressure hydraulic fluid port communicates with valve seat front aperture, described return opening communicates with the oil duct in Returnning spring and proportion electro-magnet respectively.
Described spool is poppet valve core.
Described pressure closed loop control figure integrated form amplifier one side is provided with communication interface, and opposite side is provided with seven core sockets.
The beneficial effects of the utility model are: attachment face meets standard design, the integrated configuration of digital amplifier, compact overall structure; by pressure closed loop control principle, apply; modular design combination; make that stable, highly sensitive, the stagnant ring of product work is little, dynamic quality is high, reliability is high; Returnning spring shields, the valve pressure unloading in the time of can reducing zero-signal electric current.
The integrated direct-acting type proportional overflow valve of pressure closed loop control figure of the present utility model, the thrust that its proportion electro-magnet produces and spring force, pressure transducer feedback signal are relevant, proportion electro-magnet produces thrust on poppet valve core, by valve seat circular hole area and oil liquid pressure balance; Between poppet valve core and valve seat, form overflow annular opening and do the used time, the spillway discharge of its valve opening has limited hydraulic coupling and has kept the effect that do not raise, but, poppet valve core openings of sizes is subject to the interference effects such as oil temperature, make the variation of spillway discharge cause larger pressure divergence, therefore, the various disturbing factors that cause pressure divergence, by pressure transducer, feed back and revise in time, reach the effect that reduces override pressure, in pressure closed loop control figure integrated form amplifier, PID Controller is set, guarantees the degree of regulation state of Closed-loop pressure control system.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the worm's eye view of Fig. 1.
Wherein: 1, proportion electro-magnet, 2, push rod, 3 spools, 4, guide sleeve, 5, Returnning spring, 6, valve seat, 7, valve body, 8, pressure transducer, 9, signal conductor, 10, seven core sockets, 11, communication interface, 12, pressure closed loop control figure integrated form amplifier, 13, front aperture, 14, pressure filler opening, 15, return opening, 16, oil duct.
Embodiment
In order to deepen understanding of the present utility model, below in conjunction with embodiment and accompanying drawing, to of the present utility model, be described in further detail, this embodiment only, for explaining the utility model, does not form the restriction to protection domain of the present utility model.
As depicted in figs. 1 and 2, the integrated direct-acting type proportional overflow valve of pressure closed loop control figure of the present utility model, comprise spool 3, valve seat 6, valve body 7, proportion electro-magnet 1, pressure transducer 8 and pressure closed loop control figure integrated form amplifier 12, pressure closed loop control figure integrated form amplifier 12 1 sides are provided with communication interface 11, opposite side is provided with seven core sockets 10, spool 3 is poppet valve core, the left and right sides of valve body 7 is separately installed with proportion electro-magnet 1 and pressure transducer 8, pressure closed loop control figure integrated form amplifier 12 is fixed on proportion electro-magnet 1, the push rod 2 of proportion electro-magnet 1 acts on valve seat 6 axis, make spool 3 insert valve seat 6, pressure closed loop control figure integrated form amplifier 12 is connected with pressure transducer 8 by signal conductor 9, proportion electro-magnet 1 front end is provided with push rod 2, push rod 2 acts on spool 3, between spool 3 and valve seat 6, being provided with Returnning spring 5 shields, valve pressure unloading in the time of can reducing zero-signal electric current, spool 3 is all placed in guide sleeve 4 with Returnning spring 5, guide sleeve 4 is arranged on valve seat 3 and with spool 3 and coordinates, valve seat 3 front aperture 13 are communicated with pressure transducer 8, valve body 7 bottoms have pressure hydraulic fluid port 14 and return opening 15, pressure hydraulic fluid port 14 communicates with valve seat 3 front aperture 13, return opening 15 communicates with the oil duct 16 in Returnning spring 5 and proportion electro-magnet 1 respectively, attachment face meets standard design, the integrated configuration of digital amplifier, compact overall structure, by pressure closed loop control principle, apply, modular design combination, make product work stable, highly sensitive, stagnant ring is little, dynamic quality is high, reliability is high.
Principle of the present utility model:
When controlling electric current input proportion electro-magnet 1, the push rod 2 output electromagnetic pushs of proportion electro-magnet 1, compression reseting spring 5, the signal ouput force that proportion electro-magnet 1 is produced acts on poppet valve core 3, poppet valve core 3 is pressed to valve seat 6, and poppet valve core 3 is compared from the pressure of the pressure hydraulic fluid port P of front aperture 13 with valve seat 6, when hydraulic coupling is greater than proportion electro-magnet thrust, between poppet valve core 3 and valve seat 6, there is opening amount, produce spillway discharge; Because opening quantitative changeization is very little, ignoring under hydraulic power impact, when homeostasis, proportion electro-magnet 1 ouput force is directly proportional to the oil pressure of poppet valve core 3 front ends, therefore, is directly proportional to the signal code of input proportion electro-magnet 1.
But, along with changing, excess flow causes hydraulic power impact, oil liquid temperature changes and causes the impact of oily viscosity size, and the lagging characteristics of proportion electro-magnet own, amplifier temperature float impact, these impacts cause proportional pressure control valve setting-pressure accuracy poor, or proportion electro-magnet, when high-pressure regulation power, can increase and generation electromagnetic push decline phenomenon along with temperature rising resistance.Therefore, adopts pressure sensor is monitored proportional pressure control valve level pressure value at any time, and by pressure divergence at any time feedback amplifier carry out Closed-loop pressure control.Because amplifier internal digital PID regulator function is powerful, can realize proportional pressure control valve level pressure high-precision requirement completely.
During the utility model work, valve is equivalent to change the handle of common Presure-adjusting Spring of Overflow Valve into proportion electro-magnet, at electromagnetic push, acts directly on poppet valve core, if input control signal is zero, electromagnetic push disappears, the off-load immediately of pressure hydraulic fluid port P pressure; If the dynamic step of pressure changes, in oil return inlet T, damping hole is set, between poppet valve core and guiding valve pocket, form dynamic antivibration effect, be conducive to valve working stability.
The above; it is only preferred embodiment of the present utility model; be not the utility model to be done to the restriction of any other form, and according to any modification or equivalent variations that technical spirit of the present utility model is done, still belong to the utility model scope required for protection.
Claims (3)
1. the integrated direct-acting type proportional overflow valve of pressure closed loop control figure, it is characterized in that: comprise spool, valve seat, valve body, proportion electro-magnet, pressure transducer and pressure closed loop control figure integrated form amplifier, the left and right sides of described valve body is separately installed with proportion electro-magnet and pressure transducer, described pressure closed loop control figure integrated form amplifier is fixed on proportion electro-magnet, described pressure closed loop control figure integrated form amplifier is connected with pressure transducer by signal conductor, described proportion electro-magnet front end is provided with push rod, described push rod acts on spool, between described spool and valve seat, be provided with Returnning spring, described spool and Returnning spring are all placed in guide sleeve, described guide sleeve is arranged on valve seat and with spool and coordinates, described valve seat front aperture is communicated with pressure transducer, described valve body bottom has pressure hydraulic fluid port and return opening, described pressure hydraulic fluid port communicates with valve seat front aperture, described return opening communicates with the oil duct in Returnning spring and proportion electro-magnet respectively.
2. the integrated direct-acting type proportional overflow valve of pressure closed loop control figure according to claim 1, is characterized in that: described spool is poppet valve core.
3. the integrated direct-acting type proportional overflow valve of pressure closed loop control figure according to claim 1, is characterized in that: described pressure closed loop control figure integrated form amplifier one side is provided with communication interface, and opposite side is provided with seven core sockets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420474541.3U CN204004647U (en) | 2014-08-22 | 2014-08-22 | The integrated direct-acting type proportional overflow valve of pressure closed loop control figure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420474541.3U CN204004647U (en) | 2014-08-22 | 2014-08-22 | The integrated direct-acting type proportional overflow valve of pressure closed loop control figure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004647U true CN204004647U (en) | 2014-12-10 |
Family
ID=52044650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420474541.3U Withdrawn - After Issue CN204004647U (en) | 2014-08-22 | 2014-08-22 | The integrated direct-acting type proportional overflow valve of pressure closed loop control figure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204004647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235450A (en) * | 2014-08-22 | 2014-12-24 | 海门市油威力液压工业有限责任公司 | Pressure closed loop control digital integrated direct acting type proportional overflow valve |
-
2014
- 2014-08-22 CN CN201420474541.3U patent/CN204004647U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104235450A (en) * | 2014-08-22 | 2014-12-24 | 海门市油威力液压工业有限责任公司 | Pressure closed loop control digital integrated direct acting type proportional overflow valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141210 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |