CN214946778U

CN214946778U - Valve actuator capable of accurately monitoring stroke

Info

Publication number: CN214946778U
Application number: CN202120796390.3U
Authority: CN
Inventors: 靳义坤; 靳辉; 靳磊
Original assignee: Changzhou Chenglei Valve Technology Co ltd
Current assignee: Changzhou Chenglei Valve Technology Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-11-30
Anticipated expiration: 2031-04-16

Abstract

The utility model discloses a but valve actuator of accurate monitoring stroke belongs to valve actuator technical field. The signal shaft is rotatably contained in the box body, an output shaft is arranged in the box body, a worm wheel and a worm are matched with the output shaft in the box body, one end, close to the worm, of the signal shaft is fixedly provided with a driven piece corresponding to the worm, the driven piece is the worm wheel matched with the worm, the driven piece is meshed with the worm, and the other end of the signal shaft is connected with an absolute value encoder. The utility model discloses a but valve actuator of accurate monitoring stroke can accurate monitoring valve actuator's stroke.

Description

Valve actuator capable of accurately monitoring stroke

Technical Field

The utility model relates to a valve actuator technical field, concretely relates to valve actuator that can accurate monitoring stroke.

Background

The valve actuator is used for completing valve control of an industrial pipeline system, is an execution unit of the pipeline control system, and stroke monitoring of the electric valve is the most important link, so that the action position of the valve can be accurately known. The worm and the encoder in the old valve actuator realize angular displacement transmission through a pair of bevel gears, and the angular displacement deviation between the worm and the encoder is increased by excessive matching parts, so that the angular displacement stroke of the output shaft cannot be accurately monitored.

It is therefore desirable to provide a valve actuator that accurately monitors travel to address the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the valve actuator capable of accurately monitoring the stroke is provided, and the stroke of the valve actuator can be accurately monitored.

The utility model provides a technical scheme that its technical problem adopted is: a valve actuator capable of accurately monitoring stroke comprises a box body and a signal shaft which is rotatably accommodated in the box body, wherein an output shaft is arranged in the box body, and a worm wheel and a worm are matched in the box body corresponding to the output shaft; one end of the signal shaft close to the worm is fixedly provided with a driven part corresponding to the worm, the driven part is a worm wheel matched with the worm, the driven part is meshed with the worm, and the other end of the signal shaft is connected with an absolute value encoder.

Furthermore, the worm wheel is fixedly sleeved on the output shaft, the worm is rotatably accommodated in the box body, and the worm is meshed with the worm wheel.

Furthermore, the valve actuator capable of accurately monitoring the stroke further comprises a motor, wherein the motor is connected with the worm, and the worm transmits power to the output shaft.

Further, the axis of the signal shaft is perpendicular to the axis of the worm.

Furthermore, a coupler is fixedly installed at one end, far away from the driven part, of the signal shaft.

Further, the coupler is connected with the absolute value encoder.

The utility model has the advantages that: the utility model discloses but valve actuator of accurate monitoring stroke, the one end that the signal axle is close to the worm corresponds worm fixed mounting and has the follower, the follower is the worm wheel supporting with the worm, the follower meshes with the worm mutually, absolute value encoder is connected to the other end of signal axle, the signal axle is through the direct transmission that realizes the angle displacement of follower above that with the worm, need not too much fitting piece, effectively reduced manufacturing error and assembly error between signal axle and worm, reach the purpose of the stroke of accurate monitoring valve actuator.

Drawings

The present invention will be further explained with reference to the drawings and examples.

In the figure: fig. 1 is a schematic structural diagram of a valve actuator capable of accurately monitoring a stroke according to the present invention;

FIG. 2 is another schematic view of the valve actuator of FIG. 1 with precise travel monitoring;

1. a box body; 11. an output shaft; 12. a worm gear; 13. a worm; 2. a signal axis; 21. a driven member; 22. a coupling is provided.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

As shown in fig. 1, the utility model provides a but valve actuator of accurate monitoring stroke, including box 1 and signal axle 2, output shaft 11 has in the box 1, and it has worm wheel 12 and worm 13 still to support in the box 1 to correspond output shaft 11, and signal axle 2 is used for transmitting out output shaft 11's angle displacement stroke, reaches the purpose of monitoring valve actuator's 11 strokes of output shaft.

Specifically, the worm wheel 12 is fixedly sleeved on the output shaft 11, the worm 13 is rotatably accommodated in the box body 1 and is adjacent to the output shaft 11, and the worm 13 is meshed with the worm wheel 12.

The utility model discloses a but valve actuator of accurate monitoring stroke still includes motor (not shown), and worm 13 is connected to the motor, through worm 13 with power transmission to output shaft 11, the utility model discloses a but valve actuator of accurate monitoring stroke at the during operation, output shaft 11 opens or closes equipment such as valve through rotary motion.

The signal shaft 2 is rotatably accommodated in the box body 1, the axis of the signal shaft 2 is perpendicular to the axis of the worm 13, one end of the signal shaft 2 is connected with the worm 13 and mutually transmits angular displacement, more precisely, one end of the signal shaft 2 close to the worm 13 is fixedly provided with a driven part 21 corresponding to the worm 13, the driven part 21 is a worm wheel matched with the worm 13, the driven part 21 is meshed with the worm 13, and one end of the signal shaft 2 far away from the driven part 21 is fixedly provided with a coupler 22; the signal shaft 2 directly realizes the transmission of angular displacement with the worm 13 through the follower 21 on it, need not too much fitting piece, has effectively reduced manufacturing error and assembly error between signal shaft 2 and worm 13, reaches the purpose of accurate monitoring valve actuator's stroke.

In a specific embodiment, the utility model discloses a but valve actuator of accurate monitoring stroke is still including installing absolute value encoder (not shown) on box 1, and the absolute value encoder is connected to the other end of shaft coupling 22 to the rotatory drive signal axle 2 that drives of worm 13 rotates, and it is rotatory to drive the central code wheel of absolute value encoder through signal axle 2, and the indirect signal transmission who goes out output shaft 11's angle displacement stroke reaches the purpose of monitoring output shaft 11 angle displacement stroke, monitors this valve actuator's stroke promptly.

Therefore the utility model discloses a but valve actuator of accurate monitoring stroke has following beneficial effect at least:

one end of the signal shaft 2 close to the worm 13 is fixedly provided with a driven part 21 corresponding to the worm 13, the driven part 21 is a worm wheel matched with the worm 13, the driven part 21 is meshed with the worm 13, the other end of the signal shaft 2 is connected with an absolute value encoder, the signal shaft 2 directly realizes the transmission of angular displacement with the worm 13 through the driven part 21 on the signal shaft, excessive matching parts are not needed, the manufacturing error and the assembly error between the signal shaft 2 and the worm 13 are effectively reduced, and the purpose of accurately monitoring the stroke of the valve actuator is achieved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a but valve actuator of accurate monitoring stroke, include the box and rotationally accept in signal axle in the box, the output shaft has in the box, correspond in the box the output shaft is supporting to have worm wheel and worm, its characterized in that: one end of the signal shaft close to the worm is fixedly provided with a driven part corresponding to the worm, the driven part is a worm wheel matched with the worm, the driven part is meshed with the worm, and the other end of the signal shaft is connected with an absolute value encoder.

2. A valve actuator with precise travel monitoring as claimed in claim 1, wherein: the worm wheel is fixedly sleeved on the output shaft, the worm is rotatably accommodated in the box body, and the worm is meshed and matched with the worm wheel.

3. A valve actuator with precise travel monitoring as claimed in claim 1, wherein: the valve actuator capable of accurately monitoring the stroke further comprises a motor, wherein the motor is connected with the worm, and power is transmitted to the output shaft through the worm.

4. A valve actuator with precise travel monitoring as claimed in claim 1, wherein: the axial lead of the signal shaft is vertical to the axial lead of the worm.

5. A valve actuator with precise travel monitoring as claimed in claim 1, wherein: and a coupler is fixedly arranged at one end of the signal shaft, which is far away from the driven part.

6. A valve actuator capable of accurately monitoring travel according to claim 5, wherein: the coupler is connected with the absolute value encoder.