US 4,053,419 AGranted

Band filter press

AssigneeFirma Bruderhaus Maschinen GmbH

InventorJarmil Pav

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Abstract

This disclosure relates to a band filter press for separating liquid and solid matter comprising a continuous filter band adapted to receive a mixture of liquid and solid matter and convey it through successive loading, pressing and unloading zones. The filter band is in the form of a hose having a bottom center strip and two cover strips fixedly connected to the edges of the bottom strip and partially covering the same. The cover strips, which may be either integrally formed with the center strip or provided in the form of separate strips which are connected to the center strip at its lateral edges, enclose acute angles with the center strip. The lateral extremities of the connection points between the cover strips and the center strip define finite longitudinally-extending edges by means of which lateral movement of the filter band may be determined and controlled. Stiffening means and support bands insure that the cross-sectional profile of the band will be maintained throughout the various filtering stages.

Claims18

Dependent claims

A band filter press for separating liquid and solid matter by pressing a mixture thereof when located within an endless filter band consisting of a lower band having a center portion and two sidewall portions connected thereto defining an enclosure, and an upper band covering said enclosure along at least a portion of the length of said lower band, said filter press comprising in combination a loading zone including means for distributing material into the enclosure defined by said lower band before said upper band is positioned thereover, a pressing zone including means for applying pressure to said filter band when said upper band is positioned over said lower band for pressing liquid through said filter band as it passes through the pressing zone, an unloading zone including means for discharging solid matter from said lower band after said upper band is removed therefrom, collection means for collecting liquid pressed through said filter band, and means constructed and arranged to connect at least the lower lateral edges of said sidewall portions of said lower band to at least the lateral edges of said center portion thereof for providing a constant width to said center portion whereby the width of said center portion does not vary as said filter band passes through said pressing zone thereby permitting tracking control of said filter band by means adapted to sense the lateral edges of said lower band.

Dependencies are inferred from the claim text.