Wood crushing device for papermaking

Abstract

The invention discloses a wood crushing device for papermaking. The wood crushing device comprises a shell, a feeding hopper, a dustproof mechanism, a primary crushing mechanism, an extruding and crushing mechanism and a collection groove, wherein the primary crushing mechanism is arranged at the upper end of the inner side of the shell; the primary crushing mechanism comprises a crushing roller,a motor, a first sieving plate, a sliding rail, an eccentric wheel and a second rotating rod; the extruding and crushing mechanism is arranged below the primary crushing mechanism; the extruding and crushing mechanism comprises a bidirectional thread rod, side plates, a second sieving plate, a sleeve, a crushing blade and a rotating shaft. The wood crushing device disclosed by the invention is novel in design; the dustproof mechanism can be used for effectively preventing wood dust generated in a wood crushing process from flying out to lead the environment influence; when the bidirectional thread rod rotates, the two side plates are driven to do face-to-face movement or opposite-direction movement; when the side plates do face-to-face movement, wood blocks at the inner sides of the side plates can be pressurized and gathered toward the middle, so that the crushing effect of the wood blocks is improved.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a wood crushing device for papermaking. Background technique [0002] Wood pulping and papermaking refers to the production process in which wood fibers are dissociated into pulp and then copied into paper. Wood pulp is white pulp obtained by soaking and grinding wood raw materials according to different materials, cutting into pieces, grinding wood, etc. Common wood pulping is woodchip groundwood and thermally ground woodchip groundwood. Wood chip groundwood pulp is made of wood chips that have been washed with water to dissociate fibers in a disc refiner and finely ground. It is suitable for all kinds of coniferous wood chips. There are more long fiber components in the pulp than groundwood pulp, so it has higher strength, good water drainage, opacity and printability. Thermally ground wood chip ground wood pulp is obtained by decomposing fibers with a disc refiner under a certain...

AI Technical Summary

Problems solved by technology

However, before the two kinds of wood are pulped, the wood must be sliced ​​or crushed, and then refined. Nowadays, the wood crushing method is mainly combined with electric saws for chopping. The ordinary wood crushing device has poor crushing effect and low fineness.

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