Peristaltic pump

Details Peristaltic pump Peristaltic pump

1981-08-25

1983-11-29

Gluck, Richard E.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

F04B 4308

Patent

active

044178565

ABSTRACT:
A peristaltic pump has facing half shells defining a pumping cavity and circular tube access grooves entering the cavity. Rotor apparatus includes a cylinder having concave, semi-spherical end surfaces rotatably supporting roller balls therein. The pumping cavity has a tube supporting substantially semi-annular, semicircular seat. Spring loaded roller bearings in rotor axial bores communicate with the roller balls adjacent the concave surfaces. The roller bearings engage the roller balls urging a central crescent shaped occlusion of the tubing.
In operation, tubing is inserted in the access openings. The impeller rotation and frictional forces transmitted by the roller balls forces the tubing about the semicircular seat and out the opposing access groove. The roller balls impinge the tubing normal to a nominal tube axis to cause an occlusion deforming the tubing to a crescent configuration. As the roller balls traverse a toroidial configuration, the crescent shaped occlusion moves along the tube advancing fluid forward while creating a rearward vacuum.

REFERENCES:
patent: 3507585 (1970-04-01), Mercer
patent: 3549279 (1970-12-01), Grach

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