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:
Dec. 07, 1993
Filed:
Feb. 26, 1992
Alfred Bubik, Ravensburg, DE;
Anton Gmeiner, Ravensburg-Sickenreid, DE;
Walter Stein, Ravensburg, DE;
Sulzer Esher Wyss GmbH, Ravensburg, DE;
Abstract
The stock stream of a pre-cleaned paper stock suspension is sub-divided into extremely small partial jets in a chamber of a compartment. Each such partial jet or stream has a throughflow volume of approximately 50 liters/min. to 80 liters/min. and is directed with great turbulence against an impact wall within the closed chamber of the compartment at jet velocities in the order of about 10 m/sec. to 12 m/sec. and at an absolute pressure of about 0.5 to 0.8 bar absolute, the partial jets then being completely sprayed at such impact wall. The paper stock suspension which is to be deaerated has as large as possible surface area, so that the air is efficiently released at a negative pressure or vacuum of approximately 0.05 bar prevailing in the chamber and then can be suctionally removed. The division of the stream of the paper stock suspension into partial jets is accomplished by a distributor through which extends a predetermined number of throughflow openings defined by bores. The throughflow openings each have, for example, the shape of a stepped constricting or widening diffusor. Turbulence-generators can increase the action of the stepped diffusors.