CN85204355U - Digital electric flow regulating valve - Google Patents
Digital electric flow regulating valve Download PDFInfo
- Publication number
- CN85204355U CN85204355U CN 85204355 CN85204355U CN85204355U CN 85204355 U CN85204355 U CN 85204355U CN 85204355 CN85204355 CN 85204355 CN 85204355 U CN85204355 U CN 85204355U CN 85204355 U CN85204355 U CN 85204355U
- Authority
- CN
- China
- Prior art keywords
- stepping motor
- ball screw
- valve
- electric flow
- ball
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The digital electric flow regulating valve of the utility model is an operating mechanism in an automatization regulating system and is widely applied to automatization regulating and remote control. The digital electric flow regulating valve is structurally characterized in that a double-fungi shaped shutter is driven by a stepping motor through the secondary transmission of a ballscrew. The utility model has the advantages of compact structure, flexible action, high reliability, high regulating precision, etc.; the digital electric flow regulating valve is especially suitable for the control of an electronic computer for the ring opening regulation and ring closing regulation of the system; the utility model works smoothly and reliably under severe condition.
Description
This electric flow control valve is the actuator in the automation regulating system.
Manufacturing such as industrial department and plastics, glass, pottery, drinks, medicine such as in metallurgy, chemical industry, oil, power station, need be to flowing mediums such as gas, liquid, steams, carry out detected parameters and carry out open loop and closed-loop adjustment by sensor and electronic computer, with parameter stability such as the flow that guarantees system, pressure, temperature or by certain procedure turn, this is the important mission of this electric flow control valve.
Published in the present technique field or be by the stepping motor device that is used as power just at the electric control valve of industrial use, rotatablely moving of output shaft makes valve produce straight line motion by trapezoidal thread, reach the purpose of regulating flow, its shortcoming: loosely organized, the trapezoidal thread transmission efficiency is low, gapped.Therefore, degree of regulation is low, and it is big to advance the backhaul difference, and it is unreliable to work.For example: Chengde, Hebei province electronics four factory's product samples.
Structural feature of the present utility model is with the stepping motor device that is used as power, ball screw pair is made transmission device, and two bacterium shape valve are done actuator, make full use of the speciality of three kinds of mechanisms, its three is blended together dexterously, constitutes a structure that is suitable for practical complete novelty.Its advantage:
1, compact structure, the utility model are packed ball screw pair in the stepping motor, thereby make stepping motor directly drive two bacterium shape valve, make it compact integral structure, and volume is small and exquisite.
2, reliable operation because stepping motor is carried out powerful the driving to two bacterium shape valve, so antijamming capability is strong, can be under vibration, impact, humidity, high temperature, low temperature, various rugged environment such as corrosion-resistant, explosion-proof proper functioning.
3, usage range is wide, because stepping motor directly receives digital quantity signal, so this electric flow control valve is best suited for electronic computer control, can carry out open loop and closed-loop adjustment to flowing medium in the various automatic regulating systems.
4, control ability is strong, pays running torque with stepping motor by the high spin leading screw of transmission efficiency and changes translational forces into and amplified, and makes it to produce big steering force.Therefore two in addition bacterium shape valve can control the flowing medium of various pressure reduction, various flows from the influence of structure supernatant except unbalance in foreign trade pressure.
5, highly sensitive, the straight line motion of stepping motor output directly drives two bacterium shape valve, does not have medium tache, makes it highly sensitive, and time constant is little, and control signal is responded fast.
6, degree of regulation height because the advantage of stepping motor own can fully limit the performance of inertial force, starts, stops, turns to soon and accurately, does not have hyperharmonic to transfer less.Ball screw pair axial clearance is little in addition, and it is little to advance the backhaul difference during adjusting, and precision is high.
7, control performance is good, and the stepping motor step angle is little, and stroke is accurate, and the valve displacement amount is small, makes it to finely tune flow, and control is convenient, accurate.
One of the utility model enforcement (seeing Figure of description)
1 ... valve housing 2 ... valve inlet
3 ... valve base 4 ... valve
5 ... screw 6 ... seal ring
7 ... seal ring 8 ... the stepping motor rotor
9 ... stepping motor stator 10 ... the stepping motor housing
11 ... ball bearing 12 ... the stepping motor bonnet
13 ... screw 14 ... lead-in wire
15 ... gland nut 16 ... anti-switch block
17 ... locking nut 18 ... ball nut
19 ... ball 20 ... ball screw
21 ... tighten up nut 22 ... valve export
23 ... seal ring 24 ... seal ring
25 ... blanking cover 26 ... screw
This electric flow control valve is made up of valve, ball screw pair, stepping motor three parts.The valve part is made up of valve housing 1, valve base 3, valve 4, valve inlet 2, valve export 22, blanking cover 25 and seal ring 6,7,23,24; The ball screw pair part is made up of ball nut 18, ball 19 and ball screw 20; Stepping motor part is formed by stepping motor rotor 8, stepping motor stator 9, stepping motor housing 10, two pairs of ball bearings 11, stepping motor bonnet 12, lead-in wire 14, locking nut 17 with by the rotation-preventing mechanism that gland nut 15, anti-switch block 16 are formed.
Valve part right side partly is connected with screw 5 with stepping motor, and with seal ring 6,7 sealings, in case the fluid stopping body medium leaks to the stepping motor direction.Valve part left side is fixed on blanking cover 25 on the valve housing 1 with screw 26, and with seal ring 23,24 sealings, in case the fluid stopping body medium is to external leakage.
Stepping motor stator 9 usefulness interference fit are pressed in the stepping motor housing 10, and lock with locking nut 17.Stepping motor rotor 8 usefulness interference fit are pressed on the outer garden of ball nut 18.Two pairs of ball bearings 11 are supported on ball screw pair on stepping motor housing 10 and the stepping motor bonnet 12, these two supporting surfaces have higher coaxality requirement, to guarantee to rotate flexibly and to make the air gap between stepping motor stator 9 and the stepping motor rotor 8 even.Stepping motor bonnet 12 usefulness screws 13 are fixed on the stepping motor housing 10.
Rotation-preventing mechanism is that the square hole of the anti-switch block 16 that compresses on utilizing afterbody that ball screw 20 is square and being contained in stepping motor bonnet 12 and with gland nut 15 matches, make it when ball nut 18 rotations, ball screw 20 can only straight reciprocating motion, and can not have any trace to rotate, thereby guaranteed degree of regulation.
This electric flow control valve can be by the microcomputer of various models as controls such as APPLE-II, TP801, when the electronic computer output pulse signal, by going between 14, enter stepping motor stator 9, under the rotating magnetic field effect, stepping motor rotor 8 rotates, and the ball nut 18 that presses together with stepping motor rotor 8 produces under the support of two pairs of ball bearings 11 and rotatablely moves, thereby makes ball screw 20 drive valve 4 do straight reciprocating motion.Flowing medium is entered by valve inlet 2, through the narrow and small crevice throttle place of valve 4 with valve base 3, flows out from valve export 22.Because profile is made the flow area that the straight reciprocating motion of the valve 4 of variable cross section changes throttling place, makes it to take place changes in flow rate, reach and regulate the flow purpose.
Claims (2)
1, digital quantity electric flow control valve system is directly by electronic computer control, and the actuator to various automatic regulating systems implementation open loops and closed-loop adjustment is characterized in that:
(1) power plant only adopt stepping motor stator 9.
(2) transmission device adopts the ball screw pair of being made up of ball nut 18, ball 19 and ball screw 20, ball screw 20 afterbodys be square be fixed on stepping motor bonnet 12 on the square hole of anti-switch block 16 cooperate.
(3) the two bacterium shape valve 4 as the terminal actuating device are rigidly connected with ball screw 20.
2, mechanism according to claim 1 is characterized in that ball screw pair is packed in the stepping motor ball nut 18 and stepping motor rotor 8 interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85204355 CN85204355U (en) | 1985-10-18 | 1985-10-18 | Digital electric flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85204355 CN85204355U (en) | 1985-10-18 | 1985-10-18 | Digital electric flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85204355U true CN85204355U (en) | 1986-09-10 |
Family
ID=4799686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85204355 Expired - Lifetime CN85204355U (en) | 1985-10-18 | 1985-10-18 | Digital electric flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85204355U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132018A (en) * | 2014-08-04 | 2014-11-05 | 合肥正威液压科技有限公司 | Digital flow valve driven by stepping motor |
| CN105626612A (en) * | 2014-10-28 | 2016-06-01 | 北京精密机电控制设备研究所 | Digital servo valve with high integration level |
-
1985
- 1985-10-18 CN CN 85204355 patent/CN85204355U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132018A (en) * | 2014-08-04 | 2014-11-05 | 合肥正威液压科技有限公司 | Digital flow valve driven by stepping motor |
| CN105626612A (en) * | 2014-10-28 | 2016-06-01 | 北京精密机电控制设备研究所 | Digital servo valve with high integration level |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |