Thickness sorting machine of wood chips

Abstract

The invention discloses a thickness sorting machine of wood chips, comprising a machine body and a roll shaft. The thickness sorting machine is characterized in that the machine body is a fixed box structure connected with a base; 9 roll shafts A and 9 roll shafts B are alternately arranged on the machine body and are assembled in parallel; each roll shaft has a structure on which a long groove is axially distributed and triangular roller teeth are radially distributed; the groove of each roll shaft is composed of a series of toothed disks; the disks are separated with each other by gaskets; and the grooves of each roll shaft are mutually staggered, and the clearance of the grooves forms strip-type screen slits. The thickness sorting machine has the advantages of no blockage, stable operation and good sorting effect.

Description

technical field [0001] The invention relates to a wood chip thickness sorting device, which belongs to special equipment for stock preparation in pulping and papermaking. Background technique [0002] With the intensification of market competition, the quality of wood chips is reduced, and the proportion of over-thick wood chips is increasing. In order to ensure the quality of wood chips for cooking, wood chips must be screened first. The three-dimensional size of wood chips is usually measured by length, width and thickness. to measure. Pulping and papermaking technology has strict requirements on the size and quality of wood chips. Generally, the length is 20-30mm, the thickness is ≤8mm, and the width is not limited. The currently used wood chip vibrating screen or swinging screen is a sieve plate with holes, and the sieve holes are fixed grids or round holes. separated out. A large number of over-thick wood chips are sent into the cooking process to reduce the quality ...

AI Technical Summary

Problems solved by technology

The currently used wood chip vibrating screen or swinging screen is a sieve plate with holes, and the sieve holes are fixed grids or round holes. separated from

A large number of over-thick wood chips are fed into the cooking process to reduce the quality of the pulp, increase the consumption cost, increase the coarse slag rate, and reduce the yield of pulp. This is one of the main reasons for the low utilization rate of valuable wood resources.

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