SU45799A1 - Cellulose, wood and wood thickener - Google Patents

Description

The proposed thickener is intended for thickening cellulose, wood and paper pulp.

In FIG. 1 shows a cross section of a thickener, and FIG. 2 - longitudinal section.

The details of the thickener have the following designations: 1-filter cylinder open from the ends, 2-closed bath, 3-mass supply pipe, 4-throttle outlet and 5-schaber.

The difference between the proposed thickener and the existing ones is that the drum rotates in a hermetically sealed bath, into which the mass enters under pressure (from the pump) and goes through the pipeline that represents the | the passage of mass by known resistances (for example, height, choking, etc., or, best of all, resistances that are adjustable as desired).

Thus, the mass in the bath, outside the drum I, is under some overpressure at atmospheric pressure inside the drum, where water is removed.

As a result of this pressure difference, the separation of water from mass occurs more vigorously than with a conventional thickener, and even with a vacuum filter, since the cut is (531

The latter is limited to one atmosphere, but here it can be applied within wide limits. In addition, the entire lateral surface of the drum is useful.

With a slight structural change, the thickener can be converted to a pressure-sensitive sort.

The economic effect of using this thickener is expressed in increased productivity versus conventional thickeners, and consequently in a smaller number of aggregates, a smaller building size and depreciation.

The subject matter of the invention.

Cellulose, wood and wood mass thickener, characterized in that the rotating mesh open end cylinder 1 is placed in a stationary hermetically closed bath 2 equipped with a mass transfer tube 3 through which the condensable mass is pumped into the cylinder under pressure and a throttle branch 4 for discharging the condensed mass removed from the surface of the designated cylinder by the scraper 5 (FIGS. 1 and 2).

FIG. 2