Limiting switch type pneumatic actuator

Abstract

The invention belongs to the technical field of valve switch application and specifically discloses a limiting switch type pneumatic actuator. The limiting switch type pneumatic actuator comprises a cylinder block, end covers, a cylinder shaft, a piston, an angle adjusting block, a wear-resisting part, an O-shaped sealing ring, an adjusting bolt and an opening degree indicator. The limiting switchtype pneumatic actuator is characterized in that the cylinder body is provided with a first magnetic reed switch, a second magnetic reed switch and a magnet. The limiting switch type pneumatic actuator has the beneficial effects that the limiting switch type pneumatic actuator is reasonable in structural design, the problems that the combination volume is large, angle location is inaccurate, andthe on-off speed cannot be changed in the prior art are solved, the production cost is substantially reduced, the service life is prolonged, and the precision is improved; in the field of a pneumaticvalve needing to be controlled automatically, the smaller installation space is provided; as the relative number of parts is reduced and no combination tolerance exists, the angular precision is greatly improved, and consumption of energy, energy of raw materials and the number of the working procedures are greatly reduced; and the limiting switch type pneumatic actuator is relatively visual, easyand convenient to operate, control and use.

Description

technical field [0001] The invention belongs to the technical field of valve switch application, and in particular relates to a limit switch type pneumatic actuator. Background technique [0002] The pneumatic actuator uses compressed air as the power source, and the movement of the piston drives the axis to rotate 90 degrees to achieve the automatic opening and closing of the valve. Its components are: cylinder block, cylinder shaft, end cover, piston, angle adjustment block, adjustment bolt, opening indicator, related wear parts and sealing O-ring, as shown in the attached manual figure 1 shown. [0003] In response to the needs of automation, the control system needs to distinguish whether the position of the pneumatic actuator is on or off, and then judge whether it meets the judgment conditions of process control, so as to achieve the purpose of automatic control. The existing method adopts the method of adding limit switches. Not only will the overall space and cost ...

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: The purpose of the present invention is to provide a limit switch type pneumatic actuator, which has a reasonable design and structure, and combines the original pneumatic actuator, limit switch and speed control valve with three components, the improved limit switch type pneumatic actuator The device structure solves the problems of large combined volume, inaccurate angle positioning and inability to change the switching speed in the prior art, as shown in the attached manual image 3 shown

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