The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 1976
Filed:
Feb. 27, 1974
Reinhard Schmidt, Oelde, DT;
Westfalia Separator AG, Oelde, DT;
Abstract
A centrifugal separator having at least one sludge discharge passageway in the drum for emptying sludge from the separator, and a piston valve for the sludge discharge passageway which is held in the closed position by control fluid introduced into a piston valve closing chamber, and opened for discharge of sludge by discharging the control fluid through a release passageway outfitted with a release valve. To counteract the tendency of the drum to tilt when control fluid is discharged, due to uneven emptying of the control fluid from the control chamber, an annular chamber emptying into the release passage, is provided at a peripheral portion of the control chamber. Means such as a ring is interposed between the control chamber and the annular chamber. The ring serves to define a single annular passage or a plurality of circumferentially space passages, placing the control chamber and annular chamber in communication. The opening or openings throttle the flow of fluid from the control chamber to the annular chamber so that the control chamber emties evenly, with the level of control fluid in the closing chamber remaining concentric with the drum axis, during emptying of the control chamber. Thereby, the said tendency to tilt is counteracted.