Hydraulic supply system of a pulsatory press

Details Hydraulic supply system of a pulsatory press Hydraulic supply system of a pulsatory press

1980-12-22

1984-01-10

Weakley, Harold W.

Power plants

Pressure fluid source and motor

Having plural energy input means, pumps or diverse pump outlets

60494, 60469, F16D 3102

Patent

active

044246730

ABSTRACT:
A hydraulic supply system of a pulsatory press has two pumps (4 and 5) supplying through non-return valves (8 and 9) and through overflow valves (10 and 11), two slide dividers (17 and 19). The divider (17) in the position I directs oil to the working space V.sub.n under the servo-motor piston, whereas the divider (19) directs oil to the rotary divider (20) wherefrom a pulsating stream of oil gets into the working space under the part of the piston of a smaller diameter and into the run-off. The divider (17) in the position II directs oil to the space V.sub.p over the servo-motor piston at a simultaneous connection of the space V.sub.w via a slide valve (24) with the run-off, whereby the value of pressure in the space V.sub.p over the servo-motor piston is limited by means of an overflow valve (15).
The conduit supplying oil from the divider (19) to a rotary divider (20) is connected via a cut-off valve (22) and a throttle valve (23) with a conduit supplying oil from the divider (17) to the space V.sub.n under the piston of the servo-motor.

REFERENCES:
patent: 3018628 (1962-01-01), Pomper
patent: 3530668 (1970-09-01), Siebens
patent: 4023466 (1977-05-01), Strassheimer
patent: 4167893 (1979-09-01), Johnson
patent: 4198820 (1980-04-01), Roth

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