Hydraulic screw press drive

Details Hydraulic screw press drive Hydraulic screw press drive

1978-07-18

1980-07-01

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

With control means for structure storing work driving energy

100269R, 100270, F15B 102, B30B 108

Patent

active

042099870

ABSTRACT:
The drive of a hydraulic screw press comprises a power cylinder connected with the press slide by its movable member. The chamber of the power cylinder communicates with a pneudraulic accumulator provided with a device for its charging. The device comprises a pneudraulic cylinder with a distributor for communicating its under-piston hydraulic chamber alternately with the source of pressure and a low-pressure hydraulic line, and nonreturn valves for communicating the above-piston pneumatic chamber of the pneudraulic cylinder alternately with the pneumatic line and the pneumatic chamber of the pneudraulic accumulator. This ensures self-sufficiency of the drive of each hydraulic screw press, and the required pressure of gas in the pneudraulic accumulator with a comparatively simple design of the device for charging its pneumatic chamber.

REFERENCES:
patent: 1913663 (1933-06-01), Ferris
patent: 2573993 (1951-11-01), Sedgwick

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