Working principle of pneumatic plug valve

Pneumatic gate valve is a kind of powder, grain material, particle material and small block material flow or delivery of the main control equipment pneumatic gate valve advantages of simple structure, flexible operation, light weight, no blocking, especially suitable for all kinds of solid materials and 50mm or so block, group material conveying and flow regulation, installation is not restricted by Angle, easy to operate, Can adjust the scale at any time.

Mainly used in building materials, metallurgy, mining, electric power, chemical, glass, light industry, food and other industries of the warehouse top, bottom and import and export. It is the ideal equipment for controlling flow changes, starting frequently and cutting off quickly.

Working principle of pneumatic baffle valve: pneumatic baffle valve is mainly composed of frame, ram, screw, nut and other parts. Rotate the handwheel by hand to make the screw screw with screw nut and gate reciprocate in the horizontal direction to achieve the purpose of opening and closing the gate.

Technical standard for pneumatic plug valve:

1. The shell test and seal test medium of the cartridge valve is water (including preservatives), kerosene or other suitable liquid with viscosity not greater than water.

2. The sealing pair is a non-metallic sealed cartridge valve, and the sealing shell test and requirements are stipulated in Class D of GB/T13927-92.

3. The sealing pair is a metal sealed cartridge valve. The leakage amount of the sealing test with sealing performance requirements is calculated according to 1×DNmm/s.

4. Use the plug-in valve driven by electric, hydraulic and pneumatic devices. After setting the closing position, close the valve 3 times for shell and seal test according to requirements 1 and 3.

5. The cleanliness of the plug valve shall comply with the provisions of JB/T7748.

6, static pressure life test.

7. The static pressure life test times of the plug valve shall be in accordance with the regulations, and other technologies shall be in accordance with the regulations of JB/Z 234.