Mixed pulping and papermaking process

Abstract

The invention belongs to the technical field of papermaking production, and particularly relates to a mixed pulping and papermaking process which comprises a pulping tank, pre-crushing rotating rollers and a rotor. A pre-crushing groove is formed in the upper wall of the pulping tank; a pulping rotating roller is rotatably connected to the interior of the pre-crushing groove; there are two pre-crushing rotating rollers, and the pre-crushing rotating rollers are symmetrically arranged left and right; the rotor is rotatably connected to the position, close to the lower surface of the pulping tank, of the interior of the pulping tank, an upper grinding disc and a lower grinding disc are arranged at the position, under the rotor, of the bottom wall of the pulping tank, and the upper grinding disc and the lower grinding disc are relatively rotatably connected; according to the invention, the integrated production of pre-crushing and pulping of waste paper is effectively realized, large-sheet waste paper is prevented from being directly thrown into a pulper and being wound on the surface of the rotor in quantity, the load of a power source is increased, a large amount of impurities in the waste paper can be effectively removed, and the quality of finished paper is improved.

Description

technical field [0001] The invention belongs to the technical field of papermaking production, in particular to a mixed pulping and papermaking process. Background technique [0002] Pulping is the process of separating fibers from plant fiber raw materials to obtain pulp. Pulping methods can be mainly divided into mechanical methods, chemical methods and chemical mechanical methods, and mechanical pulp, chemical pulp and chemical mechanical pulp are obtained respectively. [0003] Pulper is a machine used in wet-laid nonwovens and papermaking industries for shredding, lysing and dispersing. It is a machine that can turn broken paper and waste paper in the pulp board production process into fibrous pulp. It is used in the wet-laid nonwovens process. A hydraulic pulper can be used to dissociate the fibers into single fibers. In the vertical hydraulic pulper, there is a turntable in the center of the bottom of the basin, on which there are several blades, and there are many bl...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the pulper directly pulps the waste paper. We know that many book covers are covered with a layer of sealing film. The sealing film has high strength and is easy to wrap around the surface of the rotor, resulting in a substantial increase in the load on the first motor. , and even easily cause damage to the first motor, and waste paper is often discarded for a long time, a large number of other lumps will remain inside the waste paper, and a large amount of dust will fall on the surface of the waste paper, so these large quantities Impurities are directly introduced into the inside of the pulper without separation, which seriously affects the quality of the mixed paper pulp produced.

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