Patent ID: 6342083
Filing Date: 2002-01-29
Classification: B65H,D01H

Abstract:
A filter device for a suction system of a cheese-producing textile machine comprising at least one filter chamber divided into a main filter sub-chamber and a reserve filter sub-chamber, an intermediate chamber connected to the filter chamber, a negative pressure source connected to the intermediate chamber, a closure mechanism associated with the intermediate chamber for selectively communicating the negative pressure source with the filter chamber, the closure mechanism including suction openings for communicating the intermediate chamber with the main filter sub-chamber and the reserve filter sub-chamber and closure elements respectively associated with the suction openings and functionally coupled with one another for closing and opening the suction openings alternately for communicating the intermediate chamber concurrently with the main filter sub-chamber and the reserve filter sub-chamber or for communicating the intermediate chamber only with the reserve filter sub-chamber, wherein the main filter sub-chamber includes a pressure equalization opening and the closure mechanism is arranged for closing the pressure equalization opening during a normal operating mode and for automatically opening the pressure equalization opening upon closure of the suction opening of the main filter sub-chamber.