CN113175454B - High-frequency response servo proportional valve - Google Patents

High-frequency response servo proportional valve Download PDF

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Publication number
CN113175454B
CN113175454B CN202110425106.6A CN202110425106A CN113175454B CN 113175454 B CN113175454 B CN 113175454B CN 202110425106 A CN202110425106 A CN 202110425106A CN 113175454 B CN113175454 B CN 113175454B
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valve
hole
triangular groove
valve core
communicated
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CN113175454A (en
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熊熙程
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Hangzhou Rebotech Co ltd
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Hangzhou Rebotech Co ltd
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/12—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Servomotors (AREA)

Abstract

The invention discloses a high-frequency response servo proportional valve, which comprises a lower valve block, wherein a lower valve hole is arranged in the lower valve block along the vertical direction, and a fan-shaped groove which takes the lower valve hole as the center and is communicated with the lower valve hole is arranged in the lower valve block; an upper valve block is fixedly arranged above the fan-shaped groove, an upper valve hole communicated with the lower valve hole is formed in the upper valve block along the vertical direction, and the upper valve hole and the lower valve hole are positioned at coaxial positions; a valve core is slidably connected in the lower valve hole along the vertical direction, and the upper end of the valve core is slidably connected in the upper valve hole; an upper driving assembly for driving the valve core to rotate along the circumferential direction is arranged at the upper end of the upper valve block; an inlet and an outlet are arranged on the side face of the lower valve block; the outer side of the valve core is provided with triangular grooves along the circumferential direction, and a balance assembly is rotationally connected in the fan-shaped grooves by taking the valve core as a center; the high-frequency response servo proportional valve is simple in structure, high in adjusting precision and high in response speed.

Description

High-frequency response servo proportional valve
Technical Field
The invention belongs to the technical field of servo valves, and particularly relates to a high-frequency response servo proportional valve.
Background
The electrohydraulic servo control technology has taken up high-end positions in electromechanical transmission and control technology by the remarkable characteristics of high power-weight ratio, large output force (moment), excellent static and dynamic characteristics and the like since the forty of the last century, and is mainly applied to various strategic industrial occasions such as aerospace, military weapons, ships, large power stations, steel and the like, thereby achieving great success. The servo proportional flow valve can realize constant pressure difference before and after an inlet and an outlet, is not influenced by load fluctuation, so that the flow passing through the valve port is only related to the opening degree of the valve port, thereby realizing the follow-up proportional control of the flow passing through the valve port, being not influenced by load pressure fluctuation, finally realizing reasonable distribution of the pressure and the flow of a plurality of different load oil ways in the hydraulic system, and ensuring the normal operation of functions of each part of the whole hydraulic system. However, the conventional servo proportional flow valve still has the following disadvantages:
1. the existing servo proportional flow valve adopts a slide valve mode, so that the adjustment graduation is too low due to the limited opening of an adjustment valve port, and the precision is poor;
2. the existing servo proportional flow valve generally comprises a flow regulating valve and a pressure compensator, and is integrally arranged on an integrated block to be combined together, so that the structure is complex, the volume is large, unnecessary pressure drop is generated after the flow passage of the valve body, and the regulating precision and the response speed are affected.
Disclosure of Invention
The invention aims to provide a high-frequency response servo proportional valve which is simple in structure, high in adjusting precision and high in response speed.
In order to achieve the above purpose, the present invention provides the following technical solutions: the high-frequency response servo proportional valve comprises a lower valve block, wherein a lower valve hole is formed in the lower valve block along the vertical direction, and a fan-shaped groove which takes the lower valve hole as the center and is communicated with the lower valve hole is formed in the lower valve block; an upper valve block is fixedly arranged above the fan-shaped groove, an upper valve hole communicated with the lower valve hole is formed in the upper valve block along the vertical direction, and the upper valve hole and the lower valve hole are positioned at coaxial positions; a valve core is slidably connected in the lower valve hole along the vertical direction, and the upper end of the valve core is slidably connected in the upper valve hole; an upper driving assembly for driving the valve core to rotate along the circumferential direction is arranged at the upper end of the upper valve block; an inlet and an outlet are arranged on the side face of the lower valve block; the outside of case is equipped with the triangular groove along circumference, go up the drive assembly and be used for controlling the rotation angle of case and then control triangular groove and the size of export intercommunication, it is connected with balanced subassembly to rotate with the case as the center in the fan-shaped inslot, balanced subassembly is used for controlling the export flow and does not receive the influence of export pressure variation.
Further, a communication hole communicated with the triangular groove is formed in the valve core; the balance assembly comprises a rotary sleeve, the rotary sleeve is rotationally connected in a fan-shaped groove by taking a valve core as a center, a first cavity and a second cavity are respectively formed at two ends of the rotary groove in the fan-shaped groove, an outer notch communicated with the first cavity and the communication hole is formed in the outer side of the rotary sleeve, and the outer notch is communicated with the inlet; the second chamber is communicated with the outlet, and a first spring for forcing the rotary sleeve to rotate anticlockwise is arranged in the second chamber; after the inlet is conducted to the outlet, if the pressure of the outlet is reduced, the hydraulic oil of the first chamber pushes the rotary sleeve to rotate clockwise, so that the communication area between the outer notch and the inlet is reduced, and if the pressure of the outlet is increased, the hydraulic oil of the second chamber pushes the rotary sleeve to rotate anticlockwise, so that the communication area between the valve port and the inlet is increased.
Further, an inner slot communicated with the communication hole, a first through hole used for communicating the outer slot and the inner slot, and a second through hole used for communicating the first through hole and the first cavity are arranged on the inner side of the rotary sleeve.
Further, a third through hole used for communicating the outer notch and the inlet, a fourth through hole used for communicating the outlet and the lower valve hole and a fifth through hole used for communicating the fourth through hole and the second chamber are arranged in the lower valve block.
Further, the three triangular grooves are respectively provided with a large triangular groove, a middle triangular groove and a small triangular groove from top to bottom in sequence along the vertical direction, the large triangular groove is internally provided with a large communication hole communicated with the large triangular groove, the middle triangular groove is provided with a middle communication hole communicated with the middle triangular groove, and the small triangular groove is provided with a small communication hole communicated with the small triangular groove; the lower end of the lower valve block is provided with a lower driving component for driving the valve core to move along the axial direction, and when the servo proportional valve works in a high flow state, the lower driving component controls the valve core to move to a first position along the vertical direction, and the large triangular groove and the large communication hole are positioned at a working position; when the servo proportional valve works in a medium-level flow state, the lower driving assembly controls the valve core to move to a second position along the vertical direction, and the medium triangular groove and the medium communication hole are in working positions; when the servo proportional valve works in a low flow state, the lower driving assembly controls the valve core to move to a third position along the vertical direction, and the small triangular groove and the small communication hole are in working positions.
Further, the lower driving assembly comprises a proportion electromagnet, the proportion electromagnet is fixedly arranged at the lower end of the lower valve block, the action end of the proportion electromagnet is fixedly connected with the lower end of the valve core, and the proportion electromagnet is used for controlling the valve core to move among a first position, a second position and a third position.
Further, go up the drive assembly and include servo motor, servo motor fixed mounting is in the upper end of last valve piece, the upper end of case is equipped with the slide hole, servo motor's output shaft stretches into in the slide hole, the inside wall of slide hole is equipped with spacing spout, the fixed stopper that is located spacing spout that is equipped with on servo motor's the output shaft.
Advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. by using the triangular groove structure arranged along the circumferential direction of the valve core, a longer triangular groove can be arranged, so that the adjustment precision is increased;
2. the servo proportional valve can better control the flow by setting triangular grooves with different sizes for different flow grades to adjust;
3. the whole proportional valve is compactly matched together through the structure that the rotary sleeve is sleeved on the valve core, so that the volume is reduced, and the space is saved.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1 in accordance with the present invention;
FIG. 3 is a cross-sectional view of a spindle of the present invention;
FIG. 4 is a cross-sectional view taken along the direction B-B in FIG. 3 in accordance with the present invention;
FIG. 5 is a cross-sectional view taken along the direction C-C in FIG. 3 in accordance with the present invention;
fig. 6 is a sectional view taken along the direction D-D in fig. 3 in accordance with the present invention.
Detailed Description
Referring to fig. 1-6, a high-frequency response servo proportional valve comprises a lower valve block 1, wherein a lower valve hole 1a is arranged in the lower valve block 1 along the vertical direction, and a fan-shaped groove 1b which takes the lower valve hole 1a as the center and is communicated with the lower valve hole 1a is arranged in the lower valve block 1; an upper valve block 4 is fixedly arranged above the fan-shaped groove 1b in the lower valve block 1, an upper valve hole 4a communicated with the lower valve hole 1a is arranged in the upper valve block 4 along the vertical direction, and the upper valve hole 4a and the lower valve hole 1a are positioned at coaxial positions; a valve core 3 is slidably connected in the lower valve hole 1a along the vertical direction, and the upper end of the valve core 3 is slidably connected in the upper valve hole 4 a; an upper driving component for driving the valve core 3 to rotate along the circumferential direction is arranged at the upper end of the upper valve block 4; an inlet 101 and an outlet 102 are arranged on the side surface of the lower valve block 1; the outside of case 3 is equipped with the triangular groove along circumference, go up drive assembly and be used for controlling the rotation angle of case 3 and then control triangular groove and export 102 intercommunication's size, it is connected with balanced subassembly to regard case 3 as the center rotation in the fan-shaped groove 1b, balanced subassembly is used for controlling export 102 flow and does not receive the influence of export 102 pressure variation. The upper driving assembly comprises a servo motor 5, the servo motor 5 is fixedly arranged at the upper end of the upper valve block 4, a sliding hole 3a is formed in the upper end of the valve core 3, an output shaft of the servo motor 5 stretches into the sliding hole 3a, a limiting chute 3b is formed in the inner side wall of the sliding hole 3a, and a limiting block 3c located in the limiting chute 3b is fixedly arranged on the output shaft of the servo motor 5.
A communication hole communicated with the triangular groove is formed in the valve core 3; the balance assembly comprises a rotary sleeve 2, wherein the rotary sleeve 2 is rotationally connected in a fan-shaped groove 1b by taking a valve core 3 as a center, a first cavity 13 and a second cavity 14 are respectively formed in the fan-shaped groove 1b at two ends of the rotary groove, an outer notch 23 communicated with the first cavity 13 and a communication hole is formed in the outer side of the rotary sleeve 2, and the outer notch 23 is communicated with an inlet 101; the second chamber 14 is communicated with the outlet 102, and a first spring 7 for forcing the rotary sleeve 2 to rotate anticlockwise is arranged in the second chamber 14; after the inlet 101 is conducted to the outlet 102, if the pressure of the outlet 102 is reduced, the hydraulic oil in the first chamber 13 pushes the rotary sleeve 2 to rotate clockwise, so that the communication area between the outer notch 23 and the inlet 101 is reduced, and if the pressure of the outlet 102 is increased, the hydraulic oil in the second chamber 14 pushes the rotary sleeve 2 to rotate anticlockwise, so that the communication area between the valve port and the inlet 101 is increased.
The inner side of the rotary sleeve 2 is provided with an inner slot 24 communicated with the communication hole, a first through hole 21 used for communicating the outer slot 23 and the inner slot 24, and a second through hole 22 used for communicating the first through hole 21 and the first chamber 13. The lower valve block 1 is internally provided with a third through hole 25 for communicating the outer notch 23 with the inlet 101, a fourth through hole 12 for communicating the outlet 102 with the lower valve hole 1a, and a fifth through hole 11 for communicating the fourth through hole 12 with the second chamber 14.
In this embodiment, the three triangular grooves are three and different in size, and are sequentially disposed on the outer side of the valve core 3 from top to bottom in the vertical direction, namely, a large triangular groove 34, a middle triangular groove 35 and a small triangular groove 36, wherein a large communication hole 31 communicated with the large triangular groove 34 is formed in the valve core 3 at the large triangular groove 34, a middle communication hole 32 communicated with the middle triangular groove 35 is formed in the middle triangular groove 35, and a small communication hole 33 communicated with the small triangular groove 36 is formed in the small triangular groove 36; the lower end of the lower valve block 1 is provided with a lower driving component for driving the valve core 3 to move along the axial direction, and when the servo proportional valve works in a high flow state, the lower driving component controls the valve core 3 to move to a first position along the vertical direction, and the large triangular groove 34 and the large communication hole 31 are positioned at working positions; when the servo proportional valve works in a medium-level flow state, the lower driving assembly controls the valve core 3 to move to a second position along the vertical direction, and the middle triangular groove 35 and the middle communication hole 32 are in working positions; when the servo proportional valve is operated in a low flow state, the lower driving assembly controls the valve core 3 to move to the third position in the vertical direction, and the small triangular groove 36 and the small communication hole 33 are in the operating position. The lower driving assembly comprises a proportional electromagnet 6, the proportional electromagnet 6 is fixedly arranged at the lower end of the lower valve block 1, the action end of the proportional electromagnet 6 is fixedly connected with the lower end of the valve core 3, and the proportional electromagnet 6 is used for controlling the valve core 3 to move among a first position, a second position and a third position.
As shown in fig. 1 and 2, the valve core 3 moves to the second position along the vertical direction, the middle triangular groove 35 and the middle communication hole 32 are in the working positions, when the servo motor 5 is powered on, the servo motor 5 drives the valve core 3 to rotate anticlockwise, so that the middle triangular groove 35 is gradually opened, the middle communication hole 32 is gradually communicated with the fourth communication hole 12, and at this time, the oil of the inlet 101 flows to the outlet 102 through the third through hole 25, the outer notch 23, the first through hole 21, the inner groove 24, the middle communication hole 32, the middle triangular groove 35 and the fourth communication hole 12. The larger the rotation angle of the servo motor 5 is, the larger the rotation angle of the valve core 3 is, the larger the conduction area between the middle triangular groove 35 and the fourth through hole 12 is, and the larger the flow from the inlet 101 to the outlet 102 is naturally, so that the flow from the inlet 101 to the outlet 102 is in direct proportion to the rotation angle of the servo motor 5.
In addition, after the servo motor 5 is electrified and the inlet 101 is conducted to the outlet 102, when the pressure of the outlet 102 is reduced (namely, the pressure in the second chamber 14 is reduced), the rotary sleeve 2 is pushed by the hydraulic oil at the first chamber 13 to overcome the clockwise rotation of the first spring 7, so that the communication area between the outer notch 23 and the third through hole 25 is reduced until the pressure in the second chamber 14 is increased, and the rotary sleeve 2 reaches new balance, so that the constant pressure difference between the front and rear of the middle triangle groove 35 is ensured. Conversely, when the pressure of the outlet 102 increases (i.e., the pressure in the second chamber 14 increases), the rotating sleeve 2 is pushed to rotate counterclockwise by the hydraulic oil at the second chamber 14, so that the communication area of the outer notch 23 and the third through hole 25 increases until the pressure in the second chamber 14 decreases, and the rotating sleeve 2 reaches a new balance. In the process of changing the pressure of the outlet 102, the position of the valve core 3 is kept unchanged, and the pressure difference is kept in dynamic balance all the time by the rotary sleeve 2, so that the output flow of the valve is not influenced by the change of the pressure of the outlet 102 under the condition that the rotation angle of the servo motor 5 is constant.
In order to enable the servo proportional valve to work better under different flow conditions, three triangular grooves with different sizes are respectively arranged for three flow levels, and the triangular grooves are respectively a large triangular groove 34, a middle triangular groove 35 and a small triangular groove 36 from top to bottom; when the servo proportional valve works in a high flow state, the proportional electromagnet 6 is fully retracted, the valve core 3 moves downwards to a first position, and at the moment, the inner notch 24 and the fourth through hole 12 are communicated through the large communication hole 31 and the large triangular groove 34; when the servo proportional valve works in a medium-level flow state, the proportional electromagnet 6 stretches out, the valve core 3 moves to a second position shown in fig. 1, and at the moment, the inner groove port 24 and the fourth through hole 12 are communicated through the middle communication hole 32 and the middle triangular groove 35; when the servo proportional valve works in a low flow state, the proportional electromagnet 6 fully stretches out, the valve core 3 moves upwards to a third position, and at the moment, the inner notch 24 and the fourth through hole 12 are communicated through the small communication hole 33 and the small triangular groove 36; the switching of the servo proportional valve when working at different flow levels is completed.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (6)

1. The high-frequency response servo proportional valve is characterized by comprising a lower valve block, wherein a lower valve hole is formed in the lower valve block along the vertical direction, and a fan-shaped groove which takes the lower valve hole as the center and is communicated with the lower valve hole is formed in the lower valve block; an upper valve block is fixedly arranged above the fan-shaped groove, an upper valve hole communicated with the lower valve hole is formed in the upper valve block along the vertical direction, and the upper valve hole and the lower valve hole are positioned at coaxial positions; a valve core is slidably connected in the lower valve hole along the vertical direction, and the upper end of the valve core is slidably connected in the upper valve hole; an upper driving assembly for driving the valve core to rotate along the circumferential direction is arranged at the upper end of the upper valve block; an inlet and an outlet are arranged on the side face of the lower valve block; the valve core is characterized in that a triangular groove is formed in the outer side of the valve core along the circumferential direction, the upper driving assembly is used for controlling the rotation angle of the valve core so as to control the communication size of the triangular groove and the outlet, a balancing assembly is rotationally connected in the fan-shaped groove by taking the valve core as a center, and the balancing assembly is used for controlling the flow of the outlet to be free from the influence of the change of the pressure of the outlet;
a communication hole communicated with the triangular groove is formed in the valve core; the balance assembly comprises a rotary sleeve, the rotary sleeve is rotationally connected in a fan-shaped groove by taking a valve core as a center, a first cavity and a second cavity are respectively formed at two ends of the rotary groove in the fan-shaped groove, an outer notch communicated with the first cavity and the communication hole is formed in the outer side of the rotary sleeve, and the outer notch is communicated with the inlet; the second chamber is communicated with the outlet, and a first spring for forcing the rotary sleeve to rotate anticlockwise is arranged in the second chamber; after the inlet is conducted to the outlet, if the pressure of the outlet is reduced, the hydraulic oil of the first chamber pushes the rotary sleeve to rotate clockwise, so that the communication area between the outer notch and the inlet is reduced, and if the pressure of the outlet is increased, the hydraulic oil of the second chamber pushes the rotary sleeve to rotate anticlockwise, so that the communication area between the valve port and the inlet is increased.
2. The high-frequency response servo proportional valve according to claim 1, wherein an inner slot communicating with the communication hole, a first through hole for communicating the outer slot and the inner slot, and a second through hole for communicating the first through hole and the first chamber are provided on an inner side of the rotary sleeve.
3. The high frequency response servo proportional valve of claim 2, wherein a third through hole for communicating the outer notch and the inlet, a fourth through hole for communicating the outlet and the lower valve hole, and a fifth through hole for communicating the fourth through hole and the second chamber are provided in the lower valve block.
4. The high-frequency response servo proportional valve according to claim 2, wherein three triangular grooves are three and different in size, the three triangular grooves are sequentially arranged on the outer side of the valve core from top to bottom in the vertical direction and are respectively a large triangular groove, a middle triangular groove and a small triangular groove, a large communication hole communicated with the large triangular groove is formed in the valve core at the large triangular groove, a middle communication hole communicated with the middle triangular groove is formed in the middle triangular groove, and a small communication hole communicated with the small triangular groove is formed in the small triangular groove; the lower end of the lower valve block is provided with a lower driving component for driving the valve core to move along the axial direction, and when the servo proportional valve works in a high flow state, the lower driving component controls the valve core to move to a first position along the vertical direction, and the large triangular groove and the large communication hole are positioned at a working position; when the servo proportional valve works in a medium-level flow state, the lower driving assembly controls the valve core to move to a second position along the vertical direction, and the medium triangular groove and the medium communication hole are in working positions; when the servo proportional valve works in a low flow state, the lower driving assembly controls the valve core to move to a third position along the vertical direction, and the small triangular groove and the small communication hole are in working positions.
5. The high frequency response servo proportioning valve of claim 4 wherein said lower drive assembly comprises a proportioning electromagnet fixedly mounted at the lower end of the lower valve block, the actuating end of said proportioning electromagnet being fixedly connected to the lower end of the valve spool, said proportioning electromagnet being adapted to control movement of the valve spool between the first, second and third positions.
6. The high-frequency response servo proportional valve according to claim 1, wherein the upper driving assembly comprises a servo motor, the servo motor is fixedly arranged at the upper end of the upper valve block, a sliding hole is formed in the upper end of the valve core, an output shaft of the servo motor extends into the sliding hole, a limiting chute is formed in the inner side wall of the sliding hole, and a limiting block located in the limiting chute is fixedly arranged on the output shaft of the servo motor.
CN202110425106.6A 2021-04-20 2021-04-20 High-frequency response servo proportional valve Active CN113175454B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110425106.6A CN113175454B (en) 2021-04-20 2021-04-20 High-frequency response servo proportional valve

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Application Number Priority Date Filing Date Title
CN202110425106.6A CN113175454B (en) 2021-04-20 2021-04-20 High-frequency response servo proportional valve

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CN113175454A CN113175454A (en) 2021-07-27
CN113175454B true CN113175454B (en) 2023-05-02

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6808162B2 (en) * 2001-09-19 2004-10-26 Victory Controls, Llc Rotary 2-way servovalve
CN101324292B (en) * 2008-07-22 2010-06-02 浙江大学 Pressure automatic filling type low noise throttling valve
CN103939650B (en) * 2014-03-22 2016-05-04 哈尔滨工程大学 A kind of large flow constant flow valve that has overpressure protection function
CN105570222B (en) * 2016-02-17 2017-09-22 武汉市汉诺优电控有限责任公司 Core type proportional cartridge valve is revolved in a kind of numerical control
CN112060670B (en) * 2020-08-13 2022-05-24 山东森特克液压有限公司 Flow and pressure control device of hydraulic machine

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