CN104481949A - Plug-in proportional throttle valve - Google Patents
Plug-in proportional throttle valve Download PDFInfo
- Publication number
- CN104481949A CN104481949A CN201410707410.XA CN201410707410A CN104481949A CN 104481949 A CN104481949 A CN 104481949A CN 201410707410 A CN201410707410 A CN 201410707410A CN 104481949 A CN104481949 A CN 104481949A
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- Prior art keywords
- main valve
- plug
- described main
- proportional throttle
- valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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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)
- Details Of Valves (AREA)
Abstract
The invention relates to a plug-in proportional throttle valve. The plug-in proportional throttle valve comprises a pilot level and a main level, wherein the pilot level adopts a high-frequency response proportional reversing solenoid valve, and the main level adopts a plug-in structure in a structure of a main valve core and a main valve sleeve, therefore the processing difficulty and manufacturing cost can be reduced, and the universality and reversing solenoid valve degree can be provided. By adopting the electrical feedback of displacement by the two levels of valves, displacement signals are directly fed back to the input end of an amplifier, therefore, the interferences caused by outer factors, such as hydraulic power, friction force, can be eliminated, better static and dynamic performances than mechanical feedback and displacement-force feedback can be realized; furthermore, the degree of opening of a valve port can be precisely controlled by the pilot valve (high-frequency response proportional reversing solenoid valve) can be precisely controlled, the pilot valve is directly driven by the high-frequency response proportional reversing solenoid valve, and then drives a main valve element to move through hydraulic pressure, therefore, the power amplification can be realized, the precise control and stepless control on the main valve port can be realized, and a high voltage large flow high-precision application can be met.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to one and be applicable to high-pressure high-flow highi degree of accuracy occasion, manufacturing process is simple, processing cost is low, have comparatively be fond of tranquility, the plug-in type proportional throttle valve of dynamic performance.
Background technique
Often can run into the occasion of high-pressure high-flow in hydraulic system applications, some parts and the required precision of final controlling element to flow or speeds control higher.Due to the restriction by electromechanical converter power-weight ratio, direct action type proportional Flow valve is only applicable to small-power occasion.And at present plug-in type proportional throttle valve generally in pilot stage, main to adopt machine feedback between the two, displacement-force feedback and displacement-electric feedback form, its control principle block diagram as shown in Figure 1, but when adopting machine feedback, displacement-force feedback form, to the interference of the external factor such as hydraulic power, frictional force be there is, reduce the Static and dynamic performance of pilot proportional throttle valve.
Summary of the invention
In order to solve existing problem, the invention provides one and be applicable to high-pressure high-flow highi degree of accuracy occasion, manufacturing process is simple, processing cost is low, have comparatively be fond of tranquility, the plug-in type proportional throttle valve of dynamic performance.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of plug-in type proportional throttle valve, comprise pilot stage and main, wherein the main body of main comprises main valve body, main valve plug, main valve housing, main valve body has main aperture, main aperture one end face assembling end cap, the other end is equipped with main valve housing, in main aperture and main valve housing, install main valve plug, described pilot stage adopts high frequency sound ratio reversing solenoid valve, and described high frequency sound ratio reversing solenoid valve is integrated with electrical-controller simultaneously.
Described assembling end cap is provided with displacement transducer, and the displacement sensor rod of institute's displacement sensors and described main valve plug link together, the displacement electrical signal of described main valve plug feedback is transported to described electrical-controller via cable.
Between described main valve plug and described main valve body, be provided with two mutually isolated chambers, these two chambers are connected with two actuator ports of described high frequency sound ratio reversing solenoid valve respectively.
The radial circumference of described main valve housing has 2 circle radial holes, communicate with main valve oil outlet P and main valve oil return inlet T respectively, described main valve plug (20) between described main valve oil outlet P and main valve oil return inlet T has 1 circle radial hole, and communicates with main valve filler opening A.
Described main valve body has control port X and guide's drain tap Y, and described control port X is connected with the oil inlet P of high frequency sound ratio reversing solenoid valve, and described guide's drain tap Y is connected with the oil return inlet T of described high frequency sound ratio reversing solenoid valve.
In a specific embodiment of the present invention, the internal surface of described main valve housing mutually grinds with described main valve plug outer surface and coordinates.
In a specific embodiment of the present invention, described main valve plug is provided with anti-turn screw by radial screw thread, the other end of described anti-turn screw imbeds in described main valve housing fluting circumferentially.
In a specific embodiment of the present invention, have in the indoor design of described main valve body and main valve housing and spacing step is carried out to the left and right displacement of described main valve plug.
In a specific embodiment of the present invention, described main valve plug is hollow structure, and the two ends, left and right of described main valve plug are interconnected.
In a specific embodiment of the present invention, between described main valve plug and main valve body, be provided with seal ring, between described main valve housing and main valve body, be also provided with seal ring.
In a specific embodiment of the present invention, the seal ring between described main valve plug and main valve body adopts lattice to enclose, and the seal ring between described main valve housing and main valve body adopts O shape to enclose+rubber back-up ring.
In a specific embodiment of the present invention, below two mutually isolated chambers between described main valve plug and described main valve body and seal main valve body and assembling end cap between cavity volume below be respectively equipped with the exhaust port of linking up with air, each exhaust port outlet port is provided with high-pressure drain plug.
Beneficial effect of the present invention is: pilot stage of the present invention adopts high frequency sound ratio reversing solenoid valve, and main adopts the plug-in type structure of main valve plug and main valve housing structure, reduces difficulty of processing and manufacture cost, also provides its versatility and the degree of modularity.Two-stage valve all adopts displacement electricity feedback, and displacement signal directly feeds back to amplifier in, eliminates the interference of the external factor such as hydraulic power, frictional force, has better quiet, dynamic performance than machine feedback and displacement-force feedback.Primary valve aperture of the present invention is accurately controlled by pilot valve (high frequency sound ratio reversing solenoid valve), pilot valve is directly driven by high frequency sound proportion electro-magnet, and then drive main valve plug motion by hydraulic coupling, not only achieve power amplification, and accurately control and step-less adjustment are achieved to primary valve aperture, thus meet high-pressure high-flow high-precision applications occasion.
Accompanying drawing explanation
Fig. 1 is the control principle block diagram of current plug-in type proportional throttle valve.
Fig. 2 is sectional view of the present invention.
Fig. 3 is function figure of the present invention.
Embodiment
Present pre-ferred embodiments is provided, to describe technological scheme of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 2, a kind of plug-in type proportional throttle valve, comprises pilot stage and main, and pilot stage adopts high frequency sound ratio reversing solenoid valve 5, and high frequency sound ratio reversing solenoid valve 5 is integrated with electrical-controller 6 simultaneously.The main body of main comprises main valve body 19, main valve plug 20, main valve housing 22, main valve body 19 has main aperture, one end face assembling end cap 12 of main aperture, the other end is equipped with main valve housing 22, and in main aperture and main valve housing 22, install main valve plug 20, the internal surface of main valve housing 22 mutually grinds with main valve plug 20 outer surface and coordinates.
Assembling end cap 12 is provided with displacement transducer 8 by screw 10, and the displacement sensor rod 9 of displacement transducer 8 is linked together by spool end cap 15 and main valve plug 20, the displacement electrical signal that main valve plug 20 feeds back is transported to electrical-controller 6 via cable 7, and high frequency sound ratio reversing solenoid valve 5 is arranged on main valve body 19 by screw 2.
High frequency sound ratio reversing solenoid valve 5 adopts the spool housing configuration feature of servovalve, zero lap valve port, ensures the control accuracy of main valve.Control signal is input to high frequency sound ratio reversing solenoid valve 5 by electrical-controller 6, drive its valve core movement to specified position by the proportion electro-magnet (band displacement transducer) of its left end, its displacement aperture and control signal are in proportion, and the displacement electrical signal of spool is fed back to electrical-controller 6 by the displacement transducer of passing ratio electromagnet, and instruction value compare draw deviation signal and then regulating spool position until deviation is zero.Proportion electro-magnet is high frequency sound proportion electro-magnet, and the response time is short, ensure that the precision of valve element position closed loop control.
Two mutually isolated chambers are provided with between main valve plug 20 and main valve body 19, these two chambers are connected with two actuator ports of high frequency sound ratio reversing solenoid valve 5 respectively, control the step end face acting on main valve plug 20 after oil enters above-mentioned two chambers respectively, promote the motion of main valve plug 20.Below two chambers, be respectively equipped with exhaust port and air is linked up, and seal through high-pressure drain plug 14 in exhaust port outlet port.In machine debug process, being vented by unclamping high-pressure drain plug 14, preventing air impact valve control stability in valve pocket.
The radial circumference of main valve housing 22 has 2 circle radial holes, communicate with main valve oil outlet P and main valve oil return inlet T respectively, the main valve plug 20 between main valve oil outlet P and main valve oil return inlet T has 1 circle radial hole, and communicate with main valve filler opening A.
Main valve plug 20 is provided with anti-turn screw 23 by radial screw thread, and the other end of anti-turn screw 23 imbeds in main valve housing 22 fluting circumferentially, under the prerequisite ensureing main valve plug 20 stroke, prevents main valve plug 20 from rotating the frictional force produced and has an impact to its performance.
Have in the indoor design of main valve body 19 and main valve housing 22 and spacing step carried out to the left and right displacement of main valve plug 20, when preventing valve working, due to instantaneous pressure impact or the system failure to the infringement of system and parts.
Main valve plug 20 is hollow structure, near the side of displacement transducer 8, spool end cap 15 is housed at main valve plug 20, and is threaded connection fixing.Displacement sensor rod 9 is threaded connection and is spun on spool end cap 15 and fastening by locking nut 4.Spool end cap 15 and main valve plug 20 are split-type structure, reduce the manufacture difficulty of spool.Spool end cap 15 also has axial hole, guarantees that the two ends, left and right of main valve plug 20 are interconnected, thus offset part hydraulic power, ensure that the dynamic response performance of this valve.
Between main valve plug 20 and main valve body 19, between main valve housing 22 and main valve body 19, assemble between end cap 12 and displacement transducer 8, assemble between end cap 12 and main valve body 19 and be provided with seal ring.
In a particular embodiment, seal ring between main valve plug 20 and main valve body 19 adopts lattice to enclose 1, between main valve housing 22 and main valve body 19, assemble between end cap 12 and displacement transducer 8, the seal ring assembled between end cap 12 and main valve body 19 adopts O shape to enclose+rubber back-up ring 13.
As shown in Figure 3, main valve body 19 has control port X and guide's drain tap Y, control port X are connected with the oil inlet P of high frequency sound ratio reversing solenoid valve 5, guide's drain tap Y is connected with the oil return inlet T of high frequency sound ratio reversing solenoid valve 5.
Cavity volume between main valve body 19 and end cap 12 is connected with exhaust port, and is sealed by high-pressure drain plug 14 in exhaust port outlet port, and this plug is not generally dismantled.
More than show and describe basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and application claims protection domain is defined by appending claims and equivalent thereof.
Claims (8)
1. a plug-in type proportional throttle valve, comprise pilot stage and main, wherein the main body of main comprises main valve body (19), main valve plug (20), main valve housing (22), (19) have main aperture to main valve body, main aperture one end face assembling end cap (12), the other end is equipped with main valve housing (22), installs main valve plug (20), it is characterized in that in main aperture and main valve housing (22):
Described pilot stage adopts high frequency sound ratio reversing solenoid valve (5), and described high frequency sound ratio reversing solenoid valve (5) is integrated with electrical-controller (6) simultaneously;
Described assembling end cap (12) is provided with displacement transducer (8), and the displacement sensor rod (9) of institute's displacement sensors (8) and described main valve plug (20) link together, the displacement electrical signal that described main valve plug (20) feeds back is transported to described electrical-controller (6) via cable (7)
Between described main valve plug (20) and described main valve body (19), be provided with two mutually isolated chambers, these two chambers are connected with two actuator ports of described high frequency sound ratio reversing solenoid valve (5) respectively,
The radial circumference of described main valve housing (22) has 2 circle radial holes, communicate with main valve oil outlet P and main valve oil return inlet T respectively, described main valve plug (20) between described main valve oil outlet P and main valve oil return inlet T has 1 circle radial hole, and communicate with main valve filler opening A
Described main valve body (19) has control port X and guide's drain tap Y, described control port X is connected with the oil inlet P of high frequency sound ratio reversing solenoid valve (5), and described guide's drain tap Y is connected with the oil return inlet T of described high frequency sound ratio reversing solenoid valve (5).
2. plug-in type proportional throttle valve according to claim 1, is characterized in that: the internal surface of described main valve housing (22) mutually grinds with described main valve plug (20) outer surface and coordinates.
3. plug-in type proportional throttle valve according to claim 1, it is characterized in that: described main valve plug (20) is provided with anti-turn screw (23) by radial screw thread, the other end of described anti-turn screw (23) imbeds in described main valve housing (22) fluting circumferentially.
4. plug-in type proportional throttle valve according to claim 1, is characterized in that: have in the indoor design of described main valve body (19) and main valve housing (22) and carry out spacing step to the left and right displacement of described main valve plug (20).
5. plug-in type proportional throttle valve according to claim 1, is characterized in that: described main valve plug (20) is hollow structure, and the two ends, left and right of described main valve plug (20) are interconnected.
6. plug-in type proportional throttle valve according to claim 1, it is characterized in that: between described main valve plug (20) and main valve body (19), be provided with seal ring, between described main valve housing (22) and main valve body (19), be also provided with seal ring.
7. plug-in type proportional throttle valve according to claim 6, it is characterized in that: the seal ring between described main valve plug (20) and main valve body (19) adopts lattice to enclose, the seal ring between described main valve housing (22) and main valve body (19) adopts O shape to enclose+rubber back-up ring.
8. plug-in type proportional throttle valve according to claim 1, it is characterized in that: be respectively equipped with the exhaust port of linking up with air below two the mutually isolated chambers between described main valve plug (20) and described main valve body (19) and below the cavity volume sealing between main valve body (19) and assembling end cap (12), each exhaust port outlet port is provided with high-pressure drain plug (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707410.XA CN104481949A (en) | 2014-11-27 | 2014-11-27 | Plug-in proportional throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410707410.XA CN104481949A (en) | 2014-11-27 | 2014-11-27 | Plug-in proportional throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104481949A true CN104481949A (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410707410.XA Pending CN104481949A (en) | 2014-11-27 | 2014-11-27 | Plug-in proportional throttle valve |
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| CN (1) | CN104481949A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352146A (en) * | 2016-10-10 | 2017-01-25 | 合肥协力液压科技有限公司 | Electromagnetic proportion valve |
| CN106382388A (en) * | 2016-10-10 | 2017-02-08 | 合肥协力液压科技有限公司 | Electromagnetic proportional valve |
| CN107654430A (en) * | 2017-09-29 | 2018-02-02 | 上海立新液压有限公司 | A kind of high frequency sound twin-stage proportional direction valve and its proportion directional control method |
| CN110529446A (en) * | 2019-09-05 | 2019-12-03 | 燕山大学 | A kind of digital control flow inserted valve and its control method |
| CN111288204A (en) * | 2020-04-01 | 2020-06-16 | 上海海岳液压机电工程有限公司 | Compact digital proportional throttle cartridge valve |
| CN111365518A (en) * | 2020-04-30 | 2020-07-03 | 星宇电子(宁波)有限公司 | Pilot-operated proportional flow valve with flow feedback function |
| CN111577699A (en) * | 2020-05-26 | 2020-08-25 | 青岛鸿合数字技术有限公司 | Implementation method for electric proportional control hydraulic multi-way valve |
| CN113639069A (en) * | 2021-08-13 | 2021-11-12 | 上海立新液压有限公司 | Proportional reversing valve with displacement sensor and amplifier for main valve |
| CN114776647A (en) * | 2022-04-12 | 2022-07-22 | 江苏汇智高端工程机械创新中心有限公司 | Double closed-loop redundant control valve port independent electro-hydraulic valve and its working method |
| CN119042179A (en) * | 2024-08-26 | 2024-11-29 | 江苏嘉亦特液压有限公司 | Two-way plug-in type high-frequency response flow valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005133880A (en) * | 2003-10-31 | 2005-05-26 | Toyoda Mach Works Ltd | Solenoid valve |
| CN201209679Y (en) * | 2008-04-18 | 2009-03-18 | 山东泰丰液压设备有限公司 | Proportional guide servo control fully-active throttle cartridge valve |
| CN101550953A (en) * | 2009-04-30 | 2009-10-07 | 山东泰丰液压设备有限公司 | Large-flow double-active electro-hydraulic proportion cartridge throttle valve system |
| CN102418721A (en) * | 2011-12-07 | 2012-04-18 | 燕山大学 | A Proportional Cartridge Valve with Variable Flow Gain |
| CN202811586U (en) * | 2012-07-02 | 2013-03-20 | 济南铸造锻压机械研究所有限公司 | Double closed-loop two-way proportional flow valve |
| CN204312430U (en) * | 2014-11-27 | 2015-05-06 | 上海立新液压有限公司 | A kind of plug-in type proportional throttle valve |
-
2014
- 2014-11-27 CN CN201410707410.XA patent/CN104481949A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005133880A (en) * | 2003-10-31 | 2005-05-26 | Toyoda Mach Works Ltd | Solenoid valve |
| CN201209679Y (en) * | 2008-04-18 | 2009-03-18 | 山东泰丰液压设备有限公司 | Proportional guide servo control fully-active throttle cartridge valve |
| CN101550953A (en) * | 2009-04-30 | 2009-10-07 | 山东泰丰液压设备有限公司 | Large-flow double-active electro-hydraulic proportion cartridge throttle valve system |
| CN102418721A (en) * | 2011-12-07 | 2012-04-18 | 燕山大学 | A Proportional Cartridge Valve with Variable Flow Gain |
| CN202811586U (en) * | 2012-07-02 | 2013-03-20 | 济南铸造锻压机械研究所有限公司 | Double closed-loop two-way proportional flow valve |
| CN204312430U (en) * | 2014-11-27 | 2015-05-06 | 上海立新液压有限公司 | A kind of plug-in type proportional throttle valve |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352146A (en) * | 2016-10-10 | 2017-01-25 | 合肥协力液压科技有限公司 | Electromagnetic proportion valve |
| CN106382388A (en) * | 2016-10-10 | 2017-02-08 | 合肥协力液压科技有限公司 | Electromagnetic proportional valve |
| CN107654430A (en) * | 2017-09-29 | 2018-02-02 | 上海立新液压有限公司 | A kind of high frequency sound twin-stage proportional direction valve and its proportion directional control method |
| CN110529446A (en) * | 2019-09-05 | 2019-12-03 | 燕山大学 | A kind of digital control flow inserted valve and its control method |
| CN111288204A (en) * | 2020-04-01 | 2020-06-16 | 上海海岳液压机电工程有限公司 | Compact digital proportional throttle cartridge valve |
| CN111365518A (en) * | 2020-04-30 | 2020-07-03 | 星宇电子(宁波)有限公司 | Pilot-operated proportional flow valve with flow feedback function |
| CN111577699A (en) * | 2020-05-26 | 2020-08-25 | 青岛鸿合数字技术有限公司 | Implementation method for electric proportional control hydraulic multi-way valve |
| CN111577699B (en) * | 2020-05-26 | 2022-05-10 | 青岛鸿合数字技术有限公司 | Implementation method for electric proportional control hydraulic multi-way valve |
| CN113639069A (en) * | 2021-08-13 | 2021-11-12 | 上海立新液压有限公司 | Proportional reversing valve with displacement sensor and amplifier for main valve |
| CN114776647A (en) * | 2022-04-12 | 2022-07-22 | 江苏汇智高端工程机械创新中心有限公司 | Double closed-loop redundant control valve port independent electro-hydraulic valve and its working method |
| CN119042179A (en) * | 2024-08-26 | 2024-11-29 | 江苏嘉亦特液压有限公司 | Two-way plug-in type high-frequency response flow valve |
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Application publication date: 20150401 |