Rotary screw pump with suction vanes at intake port

Details Rotary screw pump with suction vanes at intake port Rotary screw pump with suction vanes at intake port

1989-05-09

1991-02-05

Vrablik, John J.

Rotary expansible chamber devices

Unlike helical surfaces on relatively wobbling rotating...

418181, 241185A, F04C 500, F04C 1502

Patent

active

049900706

ABSTRACT:
This disclosure relates to an improved vertical type uniaxial eccentric screw pump for transferring a variety of powders such as flour, cement and pigment. The vertical type uniaxial eccentric screw pump, without jetting compressed air inside the pump, directly sucks powder contained in a vessel through a suction port in the lower end of the pump and transfers the powder to any desired place. An eccentric screw pump includes a stator and a rotor, and a propeller shaft projects from the lower end of the male thread type rotor. Vanes for sucking powder are mounted on the shaft, and a powder delivery port is formed in the pump casing close to the discharge port at the upper end of the stator.

REFERENCES:
patent: Re29626 (1978-05-01), Allen
patent: 2505136 (1950-04-01), Moineau
patent: 2957427 (1960-10-01), O'Conner
patent: 3216768 (1965-11-01), Soeding et al.
patent: 3627453 (1971-12-01), Clark
patent: 4108386 (1978-08-01), Conery et al.
patent: 4591322 (1986-05-01), Ono et al.
Moyno Powder Pumps, Bulletin No. 110-B, dated 1964 Robbins & Myers Inc.
Japanese Publication Titled: The Mono Pump.

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