Rotor assembly for screw pump

Details Rotor assembly for screw pump Rotor assembly for screw pump

1992-12-15

1994-03-22

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Turbo machine

416244R, 4182011, 403282, 403359, 403379, F04C 1818, F04C 2900

Patent

active

052957888

ABSTRACT:
A rotor assembly for a screw pump has a light alloy rotor main body having an axially extending central bore. A steel shaft is press-fitted into the central bore. A diametrically extending fixing pin is press-fitted through the rotor main body and the shaft. Friction forces between the rotor main body and the shaft are arranged to be larger on a discharge side of the rotor assembly than on a suction side thereof. The fixing pin is disposed at substantially a central position of entire friction forces in terms of their directions and magnitudes.

REFERENCES:
patent: 2236980 (1941-04-01), Ungar
patent: 4595349 (1986-06-01), Preston et al.
patent: 4747763 (1988-05-01), Sibata et al.
patent: 4764098 (1988-08-01), Iwase et al.
patent: 4828467 (1989-05-01), Brown
patent: 4886392 (1989-12-01), Iio
patent: 5018953 (1991-05-01), Matsubara et al.

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