PNEUMATIC CIRCUIT DEVICE

摘要

PURPOSE:To reduce the following proportion of compressed air discharged from a compressor which is occupied in use for regeneration of an adsorbent by making the exhaust of a pneumatic circuit to a pressure signal by which a discharge valve of the inside of a drying equipment is opened and closed and also utilizing it as compressed air for regeneration. CONSTITUTION:Compressed air discharged from an air compressor 41 is made to dried compressed air in a drying equipment 1 and stored in an air storage tank 44. For example, when a brake pedal of a vehicle is trod, dried compressed air stored in the storage tank 44 is flowed into a pneumatic circuit 45 and discharged through an exhaust port 45b when the pedal is released. Internal pressure of a common duct 46 is made to preset pressure of a valve device 49 for releasing the residual pressure and above, and the valve device is changed over in such a state that both an inlet port 49a and an outlet port 49b are communicated and the pressure of compressed air discharged from the exhaust port 45b is acted to a pressure receiving part 36 of a control piston 29 through a control port 7 and thereby a discharge valve 28 is opened. Then the dried compressed air discharged from the exhaust port 45b is flowed to the inside of a drying drum 11 via a duct 48, a check valve 47 and an outlet 10 of a drying equipment 1 and an adsorbent 13 is regenerated thereby.