SU37981A1 - Roll for preparing high concentration paper pulp - Google Patents

Description

In existing types of rolls, it is not possible to obtain proper grinding of the mass at a concentration higher and this production of paper rolls is limited by this density of roll charging.

In the production of a folder going for the production of artificial leather (surrogate leather), for the purpose of impregnating it, it is necessary to use fiber with a high concentration of the contents of the roll, earning 18%.

This requirement is satisfied by the proposed roll design. The grinding drum I and the plaque in it are arranged according to one of the existing (few) options, while the bath differs significantly from the types encountered. It represents a vertical reinforced concrete tank 3, 4, 5 in the form of a parallelepiped, the ratio of the sides of the horizontal section is 1: 2.

By a vertical reinforced concrete partition 7, the bath is divided into two square sections of vertical channels serving to circulate the mass. A box with a strip 2 is placed in the partition on the thickened upper part. With large roll sizes for greater strength of the partition, (131)

The length of its length is stretched by a wall 9 with a thickness of 6-8 sites. At the bottom, the bath is narrowed by thickening of the outer two walls and by the broadening of the walls -5 at the bottom of the bath in the form of a half cylinder 8. The same half cylinder 19 is arranged at the very bottom of the bath. In the gap between these half-cylinders, two plates receiving rotation from the shaft of the grinding drum And 12 rectangular sections along their length and in the form of figure eight in cross section, calculated so that they rotate (the direction indicated by arrows a b b) they constantly remain in contact between C iboi and the semi-cylindrical depressions of the bottom and the stekky, as a result of which the mass is driven from the left to the direction of arrows C. This mechanism, built on the principle of the Ruta blower pump, serves to achivani mass; between two communicating si top and bottom channels bath slew mass under beating drum.

With such a pump in the roll, the slide is completely absent, as a result of which the grinding drum, which is little immersed in the mass, consumes energy only for dismounting.

The shape of the bath, the vane pump and the absence of the slide represent a very significant difference between the roll and their existing types.

The recesses 13 and 14 in the bottom of the bath serve for the deposition of stones, sand, iron objects to the like.

The subject matter of the invention.

A roll for preparing a high concentration of paper pulp, reaching 18% of the roll capacity, characterized in that the reinforced concrete roll roll 3, 4, 5, having a rectangular horizontal cross-section with a 1: 2 aspect ratio, is divided by a vertical

of the same material by a partition 7 into two square cross sections of the channel, between which a grinding drum is placed above it by a commonly used Construction with a strip 2 underneath, placed in a box installed in the upper extended part of the above partition, the lower part of which is provided with a widening 8, provided with . from the inner side across the entire width of its semi-cylindrical recess, symmetrical with the same notch 10 in the bottom of the roll bath, between which are the lapastas 11, 12, forming a rue-type vane pump, rotated from the roll shaft of the roll.