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Fine screening

A technology of fine screening and screen drum, applied in the field of fine screening, can solve the problems of low sticky removal rate, low production efficiency, shortage of raw materials, etc., and achieve the effects of good pulp quality, prolonging service life, and avoiding clogging of screen holes.

Active Publication Date: 2016-03-02
SHANDONG CHENZHONG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the paper industry is facing three major problems: 1. Raw material shortage, 2. Energy shortage, 3. Serious pollution
In use, it is found that this type of fine screen has high energy consumption, low production efficiency, and low removal rate of stickies
The traditional structure of the rotor makes it difficult to mix the slurry and evenly screen the slurry when it is running at low speed, resulting in serious slurry concentration and frequent blockage of the screen drum, which affects production and low production efficiency

Method used

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Embodiment Construction

[0024] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown, this fine screen includes a housing 2, which is supported by legs 13. The upper end of the housing 2 is connected to the machine cover 1. The upper part is provided with a pulp inlet 18, the lower part is provided with a good pulp outlet 17, and the bottom is provided with a tail The slurry opening 15 and the sealing water system 14, the machine cover 1 is conical, with left and right lifting lugs 19 set on the upper part, and a slurry return port on the top, which is connected to the slurry return port 15 through the tail slurry circulation pipe 16. A sieve drum 4 is installed in the center of the shell 2, and a rotor 5 is installed in the sieve drum 4, and the rotor 5 is connected to the driving device through a main shaft transmission device 6, and the main shaft transmission device 6 is fixed on the housing 2 through...

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Abstract

The invention relates to a fine screen and belongs to the field of pulping equipment during papermaking. The fine screen comprises a shell, wherein the shell is support by support legs; a conical cover is connected with the upper end of the shell; a screen cylinder is arranged in the center of the shell; a rotor is arranged in the screen cylinder and connected with a drive device through a main shaft driving device; a tail pulp opening is formed in the bottom of the shell; a pulp return opening is formed in the top of the cover; the pulp return opening and the tail pulp opening are connected through a tail pulp circulating pipe. The fine screen has the advantages that through the conical cover and the deslagging circulating pipe, the screening quality and the production efficiency are improved and the service life of the screen cylinder is prolonged; the fine screen is high in removing rate of stickies, high in production efficiency, low in energy consumption, stable and reliable in operation.

Description

technical field [0001] The invention relates to a fine screen and belongs to the field of special equipment for papermaking and pulping. Background technique [0002] At present, the paper industry is facing three major problems: 1. shortage of raw materials, 2. energy shortage, and 3. serious pollution. The recycling of waste paper can save raw materials, increase production, reduce pollution and protect the environment, save energy and reduce consumption, but waste paper raw materials contain a lot of impurities. These impurities are removed by the slag removal and screening equipment in the papermaking pulping line. The degree of screening of the pulp directly affects the quality of the paper, which in turn affects the production efficiency and profit of the enterprise. In the screening section of various waste paper pulp, the pressure screen has become the preferred screening equipment for more and more customers due to its unparalleled good performance and reliability....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21D5/06
Inventor 周善亮崔利胜刘卫平庞同国吕亚楠
Owner SHANDONG CHENZHONG MACHINERY