Control valve for self-emptying centrifuge drum

Details Control valve for self-emptying centrifuge drum Control valve for self-emptying centrifuge drum

1985-11-27

1987-02-24

Nilson, Robert G.

Imperforate bowl: centrifugal separators

With means for furnishing auxiliary fluid to material or...

Liquid

251 20, 494 56, B04B 1104

Patent

active

046454853

ABSTRACT:
A control valve for a self-emptying centrifuge drum for draining closure fluid out of a closure chamber positioned below an axially movable piston slide with a valve piston that closes the closure-fluid runoff bores by means of centrifugal force and opens them by supplying control fluid to an initial control chamber that has an inlet and an outlet. To improve the known control valve to the extent that it will close more rapidly, making the amount of solids extracted at each emptying more constant, another control chamber, also having an inlet and an outlet, but in which the active face of the piston is larger than that of the piston in the initial control chamber, is provided, with the volumes of the control chambers and the cross-sections of the inlets and outlet ensuring that the initial control chamber is filled first and the second control chamber only after a delay.

REFERENCES:
patent: 3099282 (1963-07-01), Miller
patent: 3940056 (1976-02-01), Schmidt
patent: 3985292 (1976-10-01), Schmidt

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