The choice of diaphragm actuators

Output power to consider: no matter what type of actuator, its output is used to overcome the load force is effective (mainly refers to the unbalanced force and unbalanced moment with friction, sealing force, gravity, and the role of the force ). Therefore, in order to make diaphragm pump work with the implementing agencies to be able to use to generate sufficient output power to overcome resistance, to ensure a high degree of sealing and the valve open.

For double-acting pneumatic, hydraulic, electric actuator, generally not reset spring. The size of the force and the direction it has nothing to do, therefore, lies in selecting executing agencies to ascertain the maximum output power and torque of the Diaphragm Pump rotation. For single-acting pneumatic actuator, output force and the valve opening, the emergence of the force on the diaphragm will also affect the motion characteristics, thus requiring the opening in the entire range of diaphragm to establish equilibrium.

The actuator output force is confirmed, use of environmental requirements according to the process, select the appropriate enforcement agency. For the scene, explosion-proof requirements, should use Hydraulic Valves actuators, and explosion-proof junction box, can not choose the electric actuator. If no explosion-proof requirements, pneumatic, electric actuators can be used, but energy considerations, should try to use electric actuator. For the hydraulic actuators, the use as pneumatic, electric actuators widely, but with adjustable high precision, fast action and smooth characteristics, therefore, in some cases, in order to achieve better regulation results, we must use hydraulic actuators institutions, such as power plants and transparent machine speed regulation, the refinery catalytic cracking unit reactor temperature adjustment control.