High concentration paper pulp grinding method and device

A high-concentration pulp technology, applied in the field of pulp and papermaking, can solve the problems of unfavorable further improvement of product quality, low fiber separation rate, high pulp swelling degree, etc., to achieve normal and reliable operation of equipment and high refining quality Reliable, highly breathable results

Active Publication Date: 2011-09-28
SICHUAN YONGFENG PAPER MAKING JOINT STOCK
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  • Application Information

AI Technical Summary

Problems solved by technology

Medium and low-consistency beating has strong fiber cutting, low fiber separation rate, high swelling degree of pulp after grinding, and poor water drainage, which is not good for paper machine making and further improvement of product quality, especially the paper is tight. High degree, low air permeability
At the same time, the water consumption of medium and low concentration pulping is high, and the power consumption is also high, and a large amount of energy is consumed in the mutual friction of the grinding teeth.

Method used

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  • High concentration paper pulp grinding method and device
  • High concentration paper pulp grinding method and device
  • High concentration paper pulp grinding method and device

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Embodiment Construction

[0023] Below we will further illustrate the present invention in conjunction with accompanying drawing:

[0024] Such as Figure 1-Figure 7 As shown, the equipment for realizing the refining method of high-concentration pulp includes a casing 1, and a power system 2, a knife adding device 3 and a refining mechanism 4 connected in sequence, and the refining mechanism 4 includes a conical roller 4.1 and a conical roller 4.1. The matched grinding sleeve 4.2 is installed on the inner wall of the casing 1. One end of the casing 1 is provided with a feeding port 1.1, and the other end is provided with a discharging port 1.2. The grinding sleeve 4.2 is provided with a The feed port and the grinding sleeve 4.2 are also provided with a discharge port that matches the discharge port 1.2; the cone surface of the cone roller 4.1 is covered with multi-thread threads, and along the thin end of the cone roller 4.1 to the thick end of the cone roller 4.1, the thread groove It gradually becom...

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Abstract

The invention relates to a high concentration paper pulp grinding method and device. The method symmetrically combines the conical roller with threads with the corresponding grinding sleeve with threads. The interfaces of the conical roller and the grinding sleeve move relatively to transport, extrude, knead, cut and fibrillate high concentration paper pulp and consequently complete the paper pulp fiber pulping. The invention can reduce energy consumption and water consumption and improve fiber fibrillation rate and internal fibrillation furthest without reducing the water filtration performance of the paper pulp. Consequently, the invention has the advantages of strong papermaking strength, high air permeability and light and firm paper characteristic.

Description

technical field [0001] The invention relates to the field of pulp and papermaking, in particular to a high-concentration pulp refining method and equipment. Background technique [0002] In the current beating method, what generally adopt is the low-concentration beating method, and only a few adopt the medium-concentration beating method. Traditional high-concentration beating is only used for coarse grinding in mechanical pulp production. The double-helical roller bladeless beating machine that has appeared in recent years is only suitable for beating short fibers. The cutting effect is poor, and the beating uniformity is not ideal. It is only used for coarse grinding in the production of chemical-mechanical pulp, and has not been widely used in papermaking enterprises. The low-concentration beating method has been developed quite maturely. Typical beating equipment includes double-circle refiners, conical refiners, and large-taper refiners. The medium-concentration metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21D1/20D21D1/22D21D1/24
Inventor 吴和均曾自银吴和岭陈丙才
Owner SICHUAN YONGFENG PAPER MAKING JOINT STOCK
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