CN201688006U - High precision electric control valve - Google Patents

High precision electric control valve Download PDF

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Publication number
CN201688006U
CN201688006U CN2010201808817U CN201020180881U CN201688006U CN 201688006 U CN201688006 U CN 201688006U CN 2010201808817 U CN2010201808817 U CN 2010201808817U CN 201020180881 U CN201020180881 U CN 201020180881U CN 201688006 U CN201688006 U CN 201688006U
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China
Prior art keywords
high precision
ball screw
valve
valve body
electric control
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Expired - Lifetime
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CN2010201808817U
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Chinese (zh)
Inventor
李拥军
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Individual
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Individual
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Abstract

A high precision electric control valve comprises a lower valve body (1) and a liquid inlet hole (18) and a linear type throttle port (19) arranged on the lower valve body, an upper valve body (2) and a cavity (20) and a liquid outlet hole (21) arranged on the upper valve body, an O-shaped seal ring (3), a valve element rod (4), a valve element locating block (5), a valve element seal O-shaped ring (6), a lock nut (7), a valve element rotation-stopping pin (8), a high precision ball screw (9), cone rolling bearings (10), a ball screw base (11), a rolling bearing base (12), a bearing support (13), a coupling (14), a stepping motor or servo motor (15), a motor stand (16) and a high precision displacement sensor (17). The high precision electric control valve is characterized in that the stepping motor or servo motor (15) is connected with the high precision ball screw (9), and the high precision ball screw (9) is connected and fixed with a pair of cone rolling bearings (10) through the ball screw base (11) and connected with the valve element rod (4) and the high precision displacement sensor (17). With simple structure, safe and reliable performance, the high precision electric control valve can be widely applied to valve control of precision experimental equipment that requires high pressure and flow regulation performance and automatic control in aviation, petroleum, chemical engineering, pharmacy and the like.

Description

A kind of highi degree of accuracy electric control valve
Technical field
The present invention relates to a kind of highi degree of accuracy electric control valve.
Background technique
Present electric control valve on the market, straight-line restriction adopts the needle-valve of taper and the restriction that rotatablely moves to adopt the ball valve of circle hole shape more more, and drive unit mostly is gas and common motor drives gear rack or turbine and worm motion, feed back the rotary-type angular displacement sensor that mostly is of valve position, such constructional device exists the little and back and forth movement of regulation range to produce problems such as error is big greatly because of drive gap, then is difficult to satisfy for the required precision conditions of higher.
Summary of the invention
In order to overcome the deficiencies in the prior art and problem, the invention provides a kind of is driving with stepper motor or actuating motor, adopting the highi degree of accuracy screw mandrel is transmission, fix with a pair of cone rolling, use linear restriction, with the highi degree of accuracy electric control valve of high accuracy displacement sensor feedback valve element position.
The technological scheme that technical solution problem of the present invention is adopted is:
A kind of highi degree of accuracy electric control valve, the inlet opening (18) and the straight line type restriction (19) of valve body (1) and upward setting thereof under comprising, upper valve body (2) and the die cavity (20) and the liquid outlet opening (21) that upward are provided with, O RunddichtringO (3), valve core rod (4), spool positioning block (5), seal spool O type circle (6), locking nut (7), spool spline pin (8), high precision ball screw mandrel (9), cone rolling (10), ball wire pole socket (11), rolling bearing pedestal (12), bearings (13), coupling (14), stepper motor or actuating motor (15), motor bearing (16), high accuracy displacement sensor (17), it is characterized in that: described stepper motor or actuating motor (15) are connected with high precision ball screw mandrel (9), high precision ball screw mandrel (9) is connected and fixed by ball wire pole socket (11) and a pair of cone rolling (10), high precision ball screw mandrel (9) is connected with valve core rod (4) and high accuracy displacement sensor (17), valve core rod (4) is made straight line motion and is changed the switching size that following valve body (1) is gone up the straight line type restriction (19) that is provided with, and the iron core bar that drives high accuracy displacement sensor (17) simultaneously moves and feeds back valve element position.
The invention has the beneficial effects as follows: rotate when stepper motor or actuating motor drive ball screw by coupling, and ball screw will rotatablely move and be converted into straight line motion, make screw mandrel drive valve core rod and do straight line motion, and thereby the straight line motion of valve core rod changes the size of restriction, thereby reach the effect of regulating flow and pressure, adopt high accuracy displacement sensor to feed back valve element position simultaneously.The present invention is simple in structure, and performance is safe and reliable, and aviation, oil, chemical industry, pharmacy etc. require pressure and Flow Adjusting Performance is higher and have the valve of the accurate experimental facilities of automatic control requirement to control thereby can be widely used in.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples
Fig. 1 is a schematic appearance of the present invention
Fig. 2 is a cut-away view of the present invention
Embodiment:
With reference to Fig. 1 and Fig. 2, a kind of highi degree of accuracy electric control valve comprises valve body (1) and liquid entering hole (18) and straight line type restriction (19) down, upper valve body (2) and die cavity (20) thereof and liquid outlet (21), O RunddichtringO (3), valve core rod (4), spool positioning block (5), seal spool O type circle (6), locking nut (7), spool spline pin (8), high precision ball screw mandrel (9), cone rolling (10), ball wire pole socket (11), rolling bearing pedestal (12), bearings (13), coupling (14), stepper motor or actuating motor (15), motor bearing (16), high accuracy displacement sensor (17) etc.Lower valve base guarantees that by O RunddichtringO (3) and screw lock valve body connection sealingly secure is reliable up and down on it; While seal spool O type circle compresses by spool positioning block (5) location and locking nut (7), guarantees the sealing of spool when doing straight line motion.Pass through screw thread or the fixing pin of the lower end of the upper end of valve core rod (4) and ball screw (9) guarantee the reliability that is connected, the iron core bar that also connects high accuracy displacement sensor (17) simultaneously, and the three does straight line motion together, adopt the structure of a pair of cone rolling (10) and high precision ball screw mandrel (9) can guarantee that valve core rod doing the flexibility of eliminating positive and negative movement clearance when straight line moves up and down and having guaranteed motion, adopt cone rolling (10) can bear bigger axial force simultaneously, the stepwise operation of employing stepper motor or actuating motor (15) is done to drive and is improved degree of regulation, the helical pitch of high precision ball screw mandrel can be accomplished 1mm, and the segmentation number of stepper motor or actuating motor can accomplish 50000 (being that minimum corner is: 360 °/50000=0.0072 °), the straight line motion minimum range of corresponding screw mandrel is: 1mm/50000=0.00002mm, this precision is quite high!
Working principle of the present invention is:
Stepper motor or actuating motor (15) rotate, the nut that drives high precision ball screw mandrel (9) by coupling (14) rotates, thereby make the screw rod of ball screw (9) do straight line motion, and the screw rod of ball screw (9) drive valve core rod (4) is done straight line motion up and down; When the liquid entering hole (18) of medium (liquid or gas) from following valve body (1) enters, flow into the die cavity interior (20) of upper valve body (2) by restriction (19), because of valve core rod (4) thus making straight line motion changes the size of the straight line type restriction (19) of valve body (1) down, thereby change the size of crossing restriction (19) by the MEDIA FLOW of liquid entering hole (18); Flow out through liquid outlet (21) in the die cavity (20) of upper valve body (2), adopt high accuracy displacement sensor (17) to feed back valve element position simultaneously, valve body can not produce leakage by O type circle (3) sealing up and down; Valve core rod (4) has then guaranteed also that by the sealing of valve core rod O type circle medium can not produce leakage by spool; High precision ball screw mandrel (9) and stepper motor (15) have guaranteed kinematic accuracy and degree of regulation, cone rolling (10) and high precision ball screw mandrel (9) have been eliminated back and forth movement greatly and have been produced the gap, cone rolling (10) can bear bigger axial force simultaneously, has also guaranteed motion and degree of regulation.Restriction and transmission device in this electric control valve can also be provided with multiple structural type, no matter adopt which kind of form in a word, so long as realize purpose of the present invention with essentially identical means, all belong to protection scope of the present invention.

Claims (1)

1. highi degree of accuracy electric control valve, the inlet opening (18) and the straight line type restriction (19) of valve body (1) and upward setting thereof under comprising, upper valve body (2) and the die cavity (20) and the liquid outlet opening (21) that upward are provided with, O RunddichtringO (3), valve core rod (4), spool positioning block (5), seal spool O type circle (6), locking nut (7), spool spline pin (8), high precision ball screw mandrel (9), cone rolling (10), ball wire pole socket (11), rolling bearing pedestal (12), bearings (13), coupling (14), stepper motor or actuating motor (15), motor bearing (16), high accuracy displacement sensor (17), it is characterized in that: described stepper motor or actuating motor (15) are connected with high precision ball screw mandrel (9), high precision ball screw mandrel (9) is connected and fixed by ball wire pole socket (11) and a pair of cone rolling (10), and high precision ball screw mandrel (9) is connected with valve core rod (4) and high accuracy displacement sensor (17).
CN2010201808817U 2010-04-19 2010-04-19 High precision electric control valve Expired - Lifetime CN201688006U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201808817U CN201688006U (en) 2010-04-19 2010-04-19 High precision electric control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201808817U CN201688006U (en) 2010-04-19 2010-04-19 High precision electric control valve

Publications (1)

Publication Number Publication Date
CN201688006U true CN201688006U (en) 2010-12-29

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CN2010201808817U Expired - Lifetime CN201688006U (en) 2010-04-19 2010-04-19 High precision electric control valve

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CN (1) CN201688006U (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635583A (en) * 2012-03-27 2012-08-15 西安交通大学 Combined type flow valve for liquid of high-pressure large-flow alternating current servo direct-drive machine
CN102705286A (en) * 2012-05-25 2012-10-03 西安交通大学 Balanced high-pressure large-current AC (Alternating Current) servo direct-driven cartridge valve
CN103090048A (en) * 2011-10-27 2013-05-08 北京精密机电控制设备研究所 High-flow direct-drive digital servo valve
CN104235101A (en) * 2014-09-03 2014-12-24 西安交通大学 Bidirectional end cam continuous rotating type high-speed striking two-position four-way hydraulic valve
CN105221508A (en) * 2015-10-29 2016-01-06 上海积健精密机械有限公司 A kind of actuating motor direct-driving type servovalve
CN105736794A (en) * 2016-03-21 2016-07-06 天津市同业科技发展有限公司 Small integrated automatic positive and negative pressure controller
CN110823578A (en) * 2019-10-25 2020-02-21 中国航发北京航科发动机控制系统科技有限公司 Simulation test device of aircraft engine nozzle

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103090048A (en) * 2011-10-27 2013-05-08 北京精密机电控制设备研究所 High-flow direct-drive digital servo valve
CN103090048B (en) * 2011-10-27 2015-06-03 北京精密机电控制设备研究所 High-flow direct-drive digital servo valve
CN102635583A (en) * 2012-03-27 2012-08-15 西安交通大学 Combined type flow valve for liquid of high-pressure large-flow alternating current servo direct-drive machine
CN102635583B (en) * 2012-03-27 2014-12-24 西安交通大学 Combined type flow valve for liquid of high-pressure large-flow alternating current servo direct-drive machine
CN102705286A (en) * 2012-05-25 2012-10-03 西安交通大学 Balanced high-pressure large-current AC (Alternating Current) servo direct-driven cartridge valve
CN104235101A (en) * 2014-09-03 2014-12-24 西安交通大学 Bidirectional end cam continuous rotating type high-speed striking two-position four-way hydraulic valve
CN104235101B (en) * 2014-09-03 2016-05-04 西安交通大学 A kind of Bidirectional end face cam continuous rotary hits at a high speed two position four-way hydraulic valves
CN105221508A (en) * 2015-10-29 2016-01-06 上海积健精密机械有限公司 A kind of actuating motor direct-driving type servovalve
CN105736794A (en) * 2016-03-21 2016-07-06 天津市同业科技发展有限公司 Small integrated automatic positive and negative pressure controller
CN105736794B (en) * 2016-03-21 2020-04-24 天津市同业科技发展有限公司 Small-size integrated positive and negative pressure automatic pressure controller
CN110823578A (en) * 2019-10-25 2020-02-21 中国航发北京航科发动机控制系统科技有限公司 Simulation test device of aircraft engine nozzle

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Granted publication date: 20101229