Three-way valve in the chemical industry, plastics, foundry industry widely used in the past mostly manual. With the development of science and technology, automatic control technology has been widely used in various fields of production, pneumatic three-way valve is born in this case. Pneumatic three-way valve can be achieved through the electric - gas control technology in the production process automatic control. 1. Cylinder block 2. Piston 3. Piston rod 4. Cylinder head 5. Roller assembly 6. Spiral guide sleeve 7. Protective cap 8. Stem 9. Adjusting wire sleeve 10. Spiral sleeve housing 11. Body 12. Valve port 13. The working principle of the valve pneumatic three-way valve is as follows: The gas-controlled three-way valve is composed of three parts: upper, middle and lower parts, the upper part is a double-acting cylinder, the middle part is a rotating part and the lower part is a three-way ball valve . When the piston 2 is at the upper end of the cylinder, the cavity I and the cavity II are communicated with each other. When the gas source enters the cylinder from P1, the piston 2 in the cylinder moves downward under the action of the gas pressure and the piston rod 3 drives the roller 5 to guide along the spiral guide housing When the piston 2 moves downward to the lower end of the cylinder, the spiral guide sleeve rotates 90 °, and the spiral guide sleeve drives the ball valve stem 8 to rotate by 90 ° and the valve core 13 rotates by 90 °, so that â… Cavity and â…¡ cavity isolation, â… cavity and â…¢ cavity interlinked. On the other hand, when the air source enters the cylinder from P2, the piston 2 in the cylinder moves upward under the action of the air pressure, the piston rod 3 drives the roller 5 to move upward and the spiral guide sleeve 6 rotates, and when the piston 2 moves upward to the upper end of the cylinder, The guide sleeve is rotated 90 ° in the opposite direction. The spiral guide sleeve drives the valve stem 8 of the ball valve to rotate 90 ° in the opposite direction and the valve core 13 rotates in the opposite direction by 90 ° so that the cavity I and cavity III are isolated, and the cavity I and cavity II communicate with each other. Pneumatic three-way valve Pneumatic solenoid valve can be controlled by the P1, P2 port to control the direction of the out of gas. Pneumatic three-way valve through the medium for the fluid, gas-liquid mixture and semi-fluid.
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