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Partial rotation actuator for valve

An actuator and valve technology, applied in the field of partial-turn actuators for valves, can solve the problems of low mechanical efficiency, poor self-locking performance, large thread clearance, etc., and achieve good self-locking performance.

Pending Publication Date: 2021-01-26
SHANGHAI KAIGONG VALVE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The actuator structure used on part-turn valves is mainly a worm gear transmission mechanism. The mechanical efficiency of the worm gear transmission mechanism is low, and the thread clearance is large, resulting in poor self-locking performance.

Method used

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  • Partial rotation actuator for valve
  • Partial rotation actuator for valve

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Embodiment Construction

[0029] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to describe the technical solution of the present invention in detail.

[0030] The purpose of the present invention is to make up for the deficiencies of the prior art, and provide a part-turn actuator for valves, which can realize high-efficiency transmission of the part-turn actuator for valves, and has better self-locking performance.

[0031] figure 1 is the front view of the present invention; figure 2 is a top view of the present invention; image 3 It is the left view of the present invention; as Figure 1-3 As shown, the part-turn actuator for the valve provided by the present invention includes: a crank connecting rod mechanism and a threaded transmission mechanism; the crank connecting rod mechanism includes a crank 16 and a connecting rod 15, the rotation axis of the crank 16 is connected to the valve, and the crank 16 and the connecting rod 1...

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Abstract

The invention relates to a partial rotation actuator for a valve. The partial rotation actuator comprises a crank-link mechanism and a threaded transmission mechanism. The crank-link mechanism comprises a crank and a connecting rod, the rotating axis of the crank is connected with the valve, and the crank is connected with the connecting rod through a pin; and the threaded transmission mechanism comprises a transmission rod and a transmission device, the transmission device is connected with the transmission rod, the transmission device moves in the rotating axis direction when the transmission rod rotates, the transmission device is connected with the connecting rod through a shaft, and the transmission rod is installed on a shell. The partial rotation actuator is good in self-locking performance, the maximum torque acts on the valve closing end or opening instant position, the partial rotation actuator is quite suitable for part of rotary valves, a limiting structure of the opening position and the closing position and the valve position indication function are achieved, a hand wheel is rotated, meanwhile the transmission rod is rotated to push a transmission nut to slide towardsone end and drive the connecting rod, the connecting rod pushes the crank to rotate around the rotating axis to complete the rotating action, and the opening and closing functions of the valve can beachieved when connected with the valve.

Description

technical field [0001] The invention relates to a rotary actuator, in particular to a partial rotary actuator for valves with simple structure, easy installation and stable performance. Background technique [0002] The actuator structure used on part-turn valves is mainly a worm gear transmission mechanism. The mechanical efficiency of the worm gear transmission mechanism is low, and the thread clearance is large, resulting in poor self-locking performance. [0003] The maximum torque of a quarter-turn valve acts on the moment when the valve is closed or opened. Once the valve is opened a little, the overall torque of the valve will drop a lot. A part-turn actuator for valves of the present invention has the advantage of self-locking performance Well, the transmission efficiency is also highest at the maximum torque state of the valve. Contents of the invention [0004] In view of the above problems, the main purpose of the present invention is to provide a part-turn act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/50F16K31/52F16K37/00
CPCF16K31/50F16K31/52F16K37/0016
Inventor 王英博王垂宏戴贤才
Owner SHANGHAI KAIGONG VALVE CO LTD
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