Overview of pneumatic butterfly valve, pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve. The pneumatic butterfly valve uses a circular butterfly plate that changes with the valve stem to open and close. The pneumatic valve to complete the activation action is mainly used as a shut-off valve, and it can also be designed to have the effect of dispatching or section valve and dispatching. At present, the butterfly valve is under high pressure. The use of large and medium diameter pipes is increasing. Pneumatic butterfly valve classification, stainless steel pneumatic butterfly valve, hard sealing pneumatic butterfly valve soft sealing pneumatic butterfly valve, carbon steel pneumatic butterfly valve.
The working principle of the pneumatic butterfly valve is composed of the pneumatic actuator and the butterfly valve connection. The pneumatic butterfly valve is driven by the compressed air into the pneumatic actuator to drive the circular butterfly plate to make a 90 degree rotating motion, which is used as a pipeline switch and regulating flow. The pneumatic butterfly valve is opened and closed through 0-90 degrees as the working principle. That is, 0 degrees is the fully closed state, and 90 degrees is the fully open state. Add a positioner to the pneumatic actuator and input the corresponding signal, and the butterfly valve plate can be adjusted arbitrarily from 0 to 90 degrees. Pneumatic wafer butterfly valve actuator is a device that receives control information and applies control effects to controlled objects in automated technical tools. Actuators are classified into pneumatic, electric and hydraulic actuators according to the driving energy used. Electric actuators and pneumatic actuators are the current mainstream actuators.
Pneumatic butterfly valve adopts the new series GT type pneumatic actuator, with double effect type and single effect type (spring reset), gear transmission, safe and reliable; large diameter valve adopts series AW type pneumatic actuator fork type transmission, reasonable structure, output Large torque, there are double-effect type and single-effect type. Pneumatic butterfly valve gear type double piston, large output torque and small volume. The cylinder is made of aluminum and gold material, which is light in weight and beautiful in appearance. Manually operated tissue can be installed on top and bottom.
For the powder system of the pneumatic butterfly valve, there are other factors that need to be considered, such as: when the material is put into the trolley from above, it cannot be directly rushed to the valve plate of the valve (this impact force will also make the valve unable to close tightly), and the material The static pressure of the valve also needs to not exceed the designed bearing pressure of the pneumatic butterfly valve, and so on.
The difference between the control valve and the general manual valve is that it cannot be regarded as an isolated component, but needs to be considered as part of the entire automatic control system. Many problems in the use of the control valve are not the selection and The problem of equipment is due to the lack of user's knowledge of the control valve, which causes the control valve to fail to debug and cooperate with the control system. As long as you know the key point of the problem, select the valve correctly, and debug the control valve in the system debugging stage, the failure rate will be greatly reduced, and the automatic control system will run stably for a long time.
