Multi-port valveless pump

Details Multi-port valveless pump Multi-port valveless pump

F - Mech Eng,Light,Heat,Weapons

04

B

103/51

F04B 19/00 (2006.01) F04B 7/06 (2006.01) F04B 19/22 (2006.01)

Patent

CA 2032240

A valveless, positive displacement metering pump is provided which is capable of either mixing two or more fluids or dividing a fluid from an inflow line into two or more outflow lines. The pump includes a housing which contains a cylindrical working chamber at different radial positions. Three or more passages extend through the housing and communicate with the working chamber. A piston is positioned within the working chamber. The piston includes a duct defined by its outer surface which communicates with one of the passages, depending upon its rotational position. The piston is rotated as it is driven back and forth within the cylinder, thereby causing the duct to sequentially communicate with the passages and the piston to sequentially close the passages. Depending upon the axial direction of movement of the piston, fluid is either pumped into or out of the working chamber as the duct rotates into communication with one of the passages.

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