CLOSED PNEUMATIC SYSTEM Russian patent published in 1996 - IPC

FIELD: machine building. SUBSTANCE: closed pneumatic system includes a compressor, pressure line connected through pneumatic distributor to actuating mechanism, and discharge line connected through low pressure tank to compressor air. Outlet pipe and safety valve are connected to low pressure tank. The valve became open when discharge line pressure exceeds limiting value. Protective reverse valve is installed on the outlet cavities of actuating mechanisms. Besides, filter-oil-separator is installed on compressor inlet. Low pressure tank is provided with a pipe open to the atmosphere through reverse valve and filter-dust-moisture-separator. EFFECT: high efficiency. 1 dwg