Manufacturing Method of the Central Manual Device for Pneumatic Straight Stroke Actuator
Actuator is a direct variable control system composed of an actuator and an adjusting mechanism. With the rapid development of modern industrial automation, the application of pneumatic actuator control mechanism of pipeline automatic control system is more and more extensive, which requires the control valve to be opened or closed automatically. Pneumatic actuator with manual actuator is mainly used. Pneumatic valve in the process of valve test, inspection, on-site installation, commissioning and maintenance loses air and power. In this case, the manual device of the valve is very important. In addition, there are many components of the traditional execution structure, which are scattered during installation, heavy and inflexible. Due to many parts, installation and debugging are very tedious.
The utility model aims to provide a central manual device with flexible operation, compact structure and convenient installation and debugging for the pneumatic straight stroke actuator. The technical solution of the utility model to solve its technical problems is: air cylinder, piston, piston rod, valve rod, manual operating mechanism, control manual operating mechanism and valve rod connection conversion mechanism, air cylinder piston, piston rod fixed connection, piston rod and valve rod connection, also including support, conversion mechanism and manual operating mechanism fixed on the support. The utility model is further arranged as follows: the conversion mechanism comprises a switching nut and a conversion block which controls the switching of the switching nut. The switching nut and the conversion block are sleeved on the valve rod. The further settings of the utility model are as follows: the manual operating mechanism includes bevel gear, hand wheel, driving wheel, the driving wheel is connected with the hand wheel, the driving wheel is engaged with the bevel gear, and the bevel gear is sleeved on the valve rod. The utility model is further arranged as follows: one end of the gear shaft is fixedly connected with the driving wheel, and the other end is fixedly connected with the hand wheel. The utility model is further arranged that: the opening and closing nuts are linked with the bevel gears. The above structure adopts a new design structure, which overcomes the shortcomings of scattered installation, heavy structure and inflexible operation in the past. This utility model will replace the traditional three parts of "support sleeve, gear and gear seat" with bevel gear, which not only ensures the installation size and accuracy of relative position, but also reduces the processing amount and turnover procedure of parts, makes the valve easy to operate, more convenient for the installation, maintenance and commissioning of the valve, and also reduces the labor intensity and safety risks of operators.
