Inverse proportion with inlet butterfly valve is used, sliding-vane compressor when the system pressure rises, due to gas reduced to inverse proportion pressure valve set, inverse proportion valve action and reduce control air volume, air compressor air intake valve servo cylinder valve stem thrust reduced, in under the action of spring force, the valve stem retraction, when the spring force and the gas cylinder thrust balance, the valve stem is in a state of half open, sliding-vane compressor into the air to gas phase equilibrium and system.

Inverse proportion valve adjustment is more simple, but in order to realize the servo cylinder sensitive action you need to adjust many times, the inverse proportion valve's purpose is to adjust air pressure moves away from the pressure switch on the floor are 0.02 MPa when the inverse proportion valve action, in order to reduce or increase the sliding-vane compressor into the air to make the air intake valve up or down accordingly, adjust the air compressor capacity in advance, in order to decrease the number of empty heavy load for sliding vane compressor. Inverse proportion valve clockwise to adjust have increased servo cylinder air inflow effect, on the other hand, is to reduce the volume.

Inverse proportion valve is installed in front of the intake valve servo cylinder.

When the system pressure to inverse proportion valve action. Adjusting the servo cylinder, servo cylinder adjusting inlet butterfly valve opening Angle, so as to adjust the volume, displacement.

Inverse proportion valve connection thread: G1/4, vent size is 0.8 MM and 1.0 MM, two kinds of inverse proportion valve in the compressor system control into the air intake valve, reducing motor load achieve energy saving effect.

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