Oil distribution gear pumps with integrated air separators

Plant husbandry – Sap buckets

Patent

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Details

417308, F04B 4900

Patent

active

052660117

ABSTRACT:
An oil distribution gear pump with an integrate air pump. This pump comprises a main body being divided into an oil distribution chamber and an oil recirculation chamber, these chambers being adapted for distributing oil to the outside and recovering oil from oil bubbles, respectively, and communicating with each other through a bubble circulation conduit and an oil recovering port. The eccentric rotary gear assembly for sucking up oil and feeding the oil to the oil distribution chamber includes a drive gear internally engaging with an eccentric rotary gear. This gear assembly is elastically supported by a compression coil spring such that the drive gear elastically advances and retracts when the eccentric rotary gear eccentrically rotates. The first and second floats are arranged in the oil distribution chamber and the oil recirculation chamber for closing or opening the bubble circulation conduit and the oil recovering port, respectively. The bubble circulation conduit is connected to an air separator for separating air from oil bubbles and ejecting the oil bubbles to the inside of the oil recirculation chamber in order to burst these bubbles. The separated air is discharged to the outside, while the remaining oil is recovered by the oil distribution chamber.

REFERENCES:
patent: 3443522 (1969-05-01), Schindler
patent: 4773836 (1988-09-01), Moore
patent: 5199858 (1993-04-01), Tsuboi et al.

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