Canned motor pumps pressurized recirculation system

Details Canned motor pumps pressurized recirculation system Canned motor pumps pressurized recirculation system

1985-06-10

1986-10-14

Croyle, Carlton R.

Pumps

Motor driven

Pump fluid communicates with sealed chamber containing armature

417368, 417369, F04B 1700

Patent

active

046169806

ABSTRACT:
A canned motor pump pressurized recirculation system which comprises a main unit and a recirculation line. The main unit includes a main pump, an auxiliary pump and motor means positioned between the main and the auxiliary pumps for driving the pumps. The recirculation line is positioned external of the main unit, and is connected thereto between the pumps. The recirculation line is adapted to pass fluid therethrough such that the fluid will be passed by the auxiliary pump through the motor means to the high pressure portion of the main pump. The auxiliary impeller is adapted for easy replacement by impellers of various sizes.

REFERENCES:
patent: 2249882 (1941-07-01), Buchanon
patent: 2810348 (1957-10-01), White
patent: 3088042 (1963-04-01), Robinson
patent: 3122894 (1964-03-01), Bernhard
patent: 3318253 (1967-05-01), Campolong
patent: 3572976 (1971-03-01), Sato
patent: 4013384 (1977-03-01), Oikawa

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