Constant-flow-rate dual-unit pump

Details Constant-flow-rate dual-unit pump Constant-flow-rate dual-unit pump

F - Mech Eng,Light,Heat,Weapons

04

B

103/22, 103/45

F04B 23/04 (2006.01) F04B 9/117 (2006.01) F04B 11/00 (2006.01)

Patent

CA 1224082

TITLE Constant-Flow-Rate Dual-Unit Pump ABSTRACT OF THE DISCLOSURE A dual-unit pump, e.g., a rolling diaphragm piston pump, suitable for pumping an abrasive high- viscosity slurry, is adapted to operate at a constant flow rate by means for detecting and correcting a pressure differential in the two units before the units switch from the pumping cycle to the filling cycle and vice versa. The flow of liquids is controlled by valves of the type which switch the flow to and from the units with essentially no volume change in the liquid inlet and outlet lines.

467380

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