The rotating cylinder manufacturers

The basic direction of pneumatic transmission system by control loop, pressure control loop and flow control circuit, etc. Direction control circuit can use directional control valve, check valve, etc. ; Pressure control loop can be used pressure relay, precision pressure reducing valve, etc. ; Flow control loop can be used solenoid valve, control valve, etc. In addition, still need some auxiliary control circuit, such as balance control loop, discharge pressure control loop, pressurization and growth control circuit, etc. In order to guarantee the normal operation of pneumatic system, usually adopts two sets of transmission system, including a system work, another set of backup system. Position feedback device for the pneumatic system of feedback control system. It increases the control precision of the whole system, improve the dynamic characteristic of the system. But because the price is expensive, pipeline system is complicated, only in need big push thrust and torque of applications to be used. Its characteristic is under the condition of the same output power, pneumatic actuator of small volume, light weight, compact structure, small inertia, fast response. Can realize stepless speed regulation over a large area, can output higher thrust and larger torque. Transmission no clearance, the smooth movement, frequent reversing operation can be realized. Easy to operate, easy to realize automation, easy to implement complex automatic control jD turn order, easy to achieve overload protection. Pneumatic system is influenced by environmental temperature, is also not suitable for long distance transmission control. Requirement is high, the requirements for control feedback device set & middot; Into a closed loop control. According to the controlled variable is mechanical quantities such as displacement, velocity and force, feedback detection device also has a displacement detection device, speed feedback detection device, etc. , make the whole system is complicated, the price rise, also improved the skill requirements for maintenance personnel.