Three valves in the chemical, plastics, foundry industry, is widely used in the past, mostly manual operation. With the development of science and technology, automatic control technology has been widely used in various production areas, Three air control valve is in this case was born. Three air control valve control technology can power a stretch in the production process to achieve automatic control.
Three air control valve structure as shown in Figure 1.
Figure 1 Three air control valve structure (1. Cylinder block 2. Piston 3. Rod 4. Cylinder head 5. Roller assembly 6. Screw guide sleeve 7. Protective cover 8. Stem 9. Adjustment of wire sets 10. spiral sets of shell 11. valve 12. valve port 13. spool)
Three air control valve works as follows:
Figure 1 Three air control valve from the upper, middle and lower 3 parts, the upper part of a pair of acting cylinder, the middle is a rotating assembly of the lower part is a ball valve. Top of the cylinder when the piston 2, Ⅰ Ⅱ chamber cavity and connected, when the gas supply from P1 into the cylinder, the cylinder of the piston 2 in downward movement under pressure, the piston rod 3 drive rollers 5 driven along the screw guide sleeve shell downward spiral groove guide sleeve 6 to rotate, when the piston 2 moves down to the bottom of the cylinder, the screw guide sleeve rotated 90 °, screw driven ball valve stem guide sleeve 8 rotate 90 °, the spool 13 rotating 90 °, so isolation chamber cavity and Ⅱ Ⅰ, Ⅰ and Ⅲ chamber cavity connected.
Conversely, when the gas supply from P2 into the cylinder, the cylinder piston 2 in the upward movement under the pressure, the piston rod 3, the upward movement driven roller 5, rotating the screw guide sleeve 6, when the piston 2 moves upward to the top of the cylinder, the spiral guide sleeve rotating in the opposite direction 90 °, spiral valve stem guide sleeve 8 driven counter-rotating 90 °, counter-rotating spool 13, 90 °, so Ⅰ and Ⅲ chamber isolation chamber, Ⅰ Ⅱ chamber cavity and connected.
Three air control valve pneumatic solenoid valve controlled by P1, P2 and out of the mouth to control the air direction. Three air control valve for the fluid through the media, and the semi-fluid gas-liquid mixture.
Also available in: Chinese.