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Roller screening pulp kneader

A pulper and drum technology, applied in the field of papermaking machinery, can solve the problems of wasting energy and reducing pulping efficiency, etc.

Inactive Publication Date: 2008-07-09
李风宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem in the prior art is that when the drum pulper decomposes the pulp that has undergone preliminary disintegration, the raw materials and qualified pulp fibers are mixed, so that the pulp fibers and undisintegrated raw materials are brought to the top of the pulping drum at the same time, wasting A lot of energy, and the qualified pulp fiber wraps the unflapped raw material, which greatly reduces the pulping efficiency

Method used

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  • Roller screening pulp kneader
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: As shown in Fig. 1 and Fig. 2, the drum screening pulper includes a pulper drum, and the pulper drum is divided into a pulping zone drum 11 and a screening zone drum 61, 62. The inner wall of the zone drum 11 is provided with a partition 2, and the structural form of the pulper drum is sequentially the first screening zone drum 61, the pulping zone drum 11 fixedly connected with the first screening zone drum 61, and the The drum 62 in the second screening area is fixedly connected to the drum 11 in the pulping area.

[0022] Spiral material guide plates 7 are fixed on the inner walls of the screening area drums 61 and 62 . The diameter of the screen drums 61 , 62 is smaller than the diameter of the pulping drum 11 . This structural form can make the drum 1 in the pulping area and the drum 6 in the screening area run at different rotational linear speeds, so as to ensure good decomposing and screening effects respectively.

[0023] The cross-sectional str...

Embodiment 2

[0025] Embodiment 2: As shown in Figure 4, this embodiment is basically the same as Embodiment 1, the difference is that the cylinder wall of the drum in the pulping area is also provided with screen holes, so that the drum in the pulping area has a screening function at the same time .

Embodiment 3

[0026] Embodiment 3: As shown in Figure 5, this embodiment is basically the same as Embodiment 1, the difference is that a pulp mixing drum 4 is provided at the entrance of the drum in the first screening area, and the function of this drum is to mix raw materials and water Thorough mixing is beneficial to the screening of raw materials by the drum 61 in the first screening zone. The structure of the pulp mixing drum 4 adopts the structure of the drum 41 as shown in FIG. 6 .

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Abstract

The invention discloses a drum screening pulp kneader, which comprises a pulp kneader drum, and the pulp kneader drum is divided into a pulping area drum and a screening area drum, a baffle board is arranged on the inner wall of the pulping area drum, and the structure form of the pulping area drum comprises a first screening area drum, a pulping area drum which is fixedly connected with the first screening area and a second screening area drum which is fixedly connected with the pulping area drum in turn. When slurry which is primarily broken is untwined, the pulp is firstly screened by the first screening drum, and acceptable pulp fiber is screened out from raw material, and raw material which is not untwined gets into the pulping drum, a large amount of energy resource is reduced, and raw material which is not untwined is avoided from being coated by the acceptable pulp, and pulping efficiency is greatly improved.

Description

technical field [0001] The invention relates to a papermaking machine, in particular to a papermaking machine integrating screening and pulping. Background technique [0002] The advantage of the drum pulper is that it decomposes waste paper fibers without chopping waste and producing fine fibers, without consuming unnecessary stirring, cutting fibers and impurities, and low energy consumption; its drum includes pulping area and screening area, the working principle of the pulping area, the waste paper entering the pulping area is soaked by water and chemicals, because the drum is slightly inclined, the waste paper moves forward slowly by the action of gravity, and the partition on the inner wall of the drum The board continuously picks up the waste paper and drops it to the bottom of the cylinder at a certain height, and uses the shearing force to loosen the waste paper fibers without breaking the waste. After the waste paper is decomposed in the pulping area, it enters th...

Claims

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Application Information

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IPC IPC(8): D21B1/34
Inventor 李风宁
Owner 李风宁
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