High pressure pumping apparatus for semi-fluid material

Details High pressure pumping apparatus for semi-fluid material High pressure pumping apparatus for semi-fluid material

F - Mech Eng,Light,Heat,Weapons

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103/45

F04B 7/04 (2006.01) F04B 15/02 (2006.01)

Patent

CA 1161303

- 0 - HIGH PRESSURE PUMPING APPARATUS FOR SEMI-FLUID MATERIAL Abstract of the Disclosure Concrete is transmitted from a hopper forming a part of a mobile concrete pumping apparatus to the deposit site through a flow line having a Y-pipe inlet. The pump- ing apparatus includes two piston-cylinder concrete pumps mounted in side-by-side relationship adjacent the hopper, which has an auger to rapidly charge a pump with concrete through one of two discharge pipes. Each pump is pivotally mounted, to locate the cylinder aligned with the discharge pipe or with one inlet of the Y-pipe inlet. Each pump has a valve plate pivoting with the cylinder to alternately close the hopper opening and the inlet line. Hydraulic cylinder units are coupled to the valve plates to pivot the pumps. A floating valve plate has coupling pipes attached to the hopper and a hydraulic cylinder urges the same into slid- ing sealing engagement with the rotating valve plate. The pumps are individually, alternately and oppositely positioned for charging and discharging, with a common discharge period at the end of the one pump unit and start of the other pump unit.

368600

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