PNEUMATIC REPLACEMENT PUMP Russian patent published in 1994 - IPC

FIELD: hyperbolic water-repelling pumping unit. SUBSTANCE: working chambers are alternately connected by means of distributor mechanism to working gas high and low pressure source. Chambers have suction and delivery pipelines with suction and delivery valves. Delivery valve is of float type. High and low pressure source is made in form of vacuum compressor unit with air distributing ducts connected with distributor mechanism. Distributor mechanism is electrical. One chamber has two-float mechanism contact closer. Vacuum compressor unit communicates with each chamber through valve boxes and two pipelines. Suction valve is of float type. Both valves feature variable buoyancy. One part of valves is made flexibly-elastic and is provided with weight-guy. Upper part of valves is body-corrugated. Valve inner space communicates with atmosphere through hose. EFFECT: enlarged operating capabilities. 2 cl, 2 dwg