Pumps – Expansible chamber type – Elongated flexible chamber wall progressively deformed
Patent
1984-07-09
1986-12-30
Vrablik, John J.
Pumps
Expansible chamber type
Elongated flexible chamber wall progressively deformed
417900, F04B 4312
Patent
active
046326464
ABSTRACT:
A squeeze pump adapted to transfer a slurry with solid materials comprises a resilient tube at least partly curved along an imaginary circle, a rotary arbor situated in the center of the imaginary circle so that the curved portion of the resilient tube is equidistantly away from the rotary arbor, the rotary arbor being adapted to be rotated by power means, and at least one pair of pressing devices connected to the arbor for pressing the resilient tube. Each pressing device includes a support shaft extending outwardly from the arbor toward the resilient tube, and a presser roll freely and rotationally connected to the support shaft. The presser roll is formed of a main body and a tapered head. The two pressing devices face each other so that the innermost planes of the main bodies always facing each other are parallel and are spaced apart at a distance about twice as great as the thickness of the wall of the resilient tube. When the rotary arbor is rotated, the presser rolls gradually nip the tube from a portion close to the rotary arbor toward outwardly by means of the tapered head so that the solid materials contained in the slurry are pushed gradually away from the tapered heads to prevent the solid materials from being nipped by the main bodies, and then press the tube completely by means of the main bodies.
REFERENCES:
patent: 2831437 (1958-04-01), Cromwell et al.
patent: 3255483 (1966-05-01), Swan
patent: 3421447 (1969-01-01), Jackson et al.
patent: 3790313 (1974-02-01), Magerle
patent: 4492538 (1985-01-01), Iwata
Daiichi Engineering Co., Ltd.
Vrablik John J.
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