Escher Wyss Limited

Sulzer Brothers Limited

Voith Paper Patent Gmbh

Manfred Kohrs

Alfred Christ

Albrecht Kahmann

Wolfgang Mannes

Wolfgang Heinbockel

Karl Muller

Process for preparing dry broke in one of a paper, cardboard or coating machine. The process includes diluting the dry broke to a consistency of between about 15 to 60%, and slushing the dry broke with shear forces sufficient to crush filler particles in the dry broke.

Process for preparing dry broke

The stock pulper is disposed on a vertical axis with an outlet for impurities of low specific gravity at the top. The wall of the stock pulper is conical with an upwardly directed apex to assist in the separation of the impurities. The top end wall of the stock pulper is also conical with an upwardly directed apex to facilitate the outflow of the impurities of low specific gravity. The outlet for high specific weight impurities is located at the bottom of the stock pulper.

Stock pulper for pulping and sorting waste paper

The stock pulper is provided with a means for adjusting the spacing between the arms of the rotor and the screen. In one embodiment, the adjustment can be made from without the stock pulper while in another embodiment, the adjustment can be made from within and without the stock pulper.

Stock pulper

The container for the stock suspension is made as a body of revolution with a conical circumferential wall and a conical end wall which defines an acute angle with the circumferential wall to facilitate separation of materials. A compartment is formed in the circumferential wall near the end wall. This compartment is of increasing radial thickness in the direction of rotation of the rotor and terminates at the location of an outlet for heavy impurities.

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Ravensburg, Germany

Manfred Kohrs