Aircon Paper Scrap Valves

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A paper scrap rotary valve is a device that allows paper trim to fall into underground conveying duct-
work. It may use the same line to tie into several die-cutters, or it may use reversible-direction rotors
to feed two parallel lines for grade separation.

A tremendous advantage of this system is that only a small amount of plant conditioned air is lost, since
trim is gravity fed into the valves, not suction fed like a conventional overhead duct system. Conveying
air can be completely taken from outside and returned outside, resulting in noticable energy savings.

This rotary valve allows material to fall vertically through the device while maintaining a pressure seal
between inlet and outlet.

For "dual" paper scrap valves, two duct lines run parallel horizontally in the underground trench. The
direction of rotor rotation changes in order to drop the scrap in the proper line. At the same time the
motor reverses rotor direction, an actuator on the other end of the valve must be activated to toggle
between rotor cavity and the correct duct line.

 

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