Viscous material pump, particularly for concrete

Details Viscous material pump, particularly for concrete Viscous material pump, particularly for concrete

1980-03-14

1982-08-10

Gluck, Richard E.

Pumps

Expansible chamber type

Mechanically actuated distributor

417519, 417900, 417532, F04B 700, F04B 1502

Patent

active

043435980

ABSTRACT:
A valve structure for a viscous material pump having a material reservoir, a pair of alternately operable material conveying cylinders, discharge conduit means, and a valve control means coupled to the valve structure and to the material conveying cylinders. The valve structure has a pair of movable swivel pipes extending between the conveying cylinders and the discharge conduit means. Each of the swivel pipes has an opening movable over one of the conveying cylinders to receive the contents discharged therefrom and a plate movable over said one conveying cylinder to block same. The swivel pipes are movable by said valve control means among a first position in which said conveying cylinder is open to the reservoir to receive viscous material therefrom during the suction cycle of the cylinder, a second position in which said plate blocks said conveying cylinder during a portion of the supply cycle thereof to compress the material, and a third position in which the opening communicates with said cylinder for receiving the contents discharged therefrom during the remainder of the supply cycle for delivery to the discharge conduit means.

REFERENCES:
patent: 3298322 (1967-01-01), Sherrod
patent: 3663129 (1972-05-01), Antosh
patent: 3667869 (1972-06-01), Schlecht
patent: 4178142 (1979-12-01), Schwing

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