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Method and device for enabling slurry in slurry flow box of forming part of paper maker to be evenly distributed

A technology of uniform distribution and headbox, applied in paper machine, wet end of paper machine, paper making, etc., can solve the problems of changing, affecting sizing uniformity, pressure instability, etc. low effect

Inactive Publication Date: 2017-09-19
建水春秋纸业有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the pressure in the square tapered return pipe will change with the pressure of the slurry pump, the pressure will be unstable and affect the uniformity of sizing.

Method used

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  • Method and device for enabling slurry in slurry flow box of forming part of paper maker to be evenly distributed

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Embodiment Construction

[0009] The method of the present invention to uniformly distribute the slurry water in the headbox of the forming part of the paper machine is to blow wind into the top of the closed headbox box, and apply uniform wind pressure above the slurry covered with the box, so that the paper machine The slurry water is evenly distributed in the headbox of the forming section.

[0010] Such as figure 1 As shown, the device for realizing the method of the present invention includes a slurry tank 1, a closed headbox 2, a slurry feeding pipe 3 connecting the slurry tank 1 and the closed headbox 2, and a slurry feeding pipe 3 arranged on the slurry feeding pipe 3. The pump 4, the air inlet pipe 5 blowing air to the top of the headbox box and the low-pulsation Roots blower 6 installed on the air inlet pipe.

[0011] When the device of the present invention is in operation, the pulp feed pump 4 pumps the finished pulp in the pulp tank 1 into the closed headbox 2 through the pulp delivery pi...

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Abstract

A method and device for uniformly distributing slurry water in the headbox of the forming part of a paper machine, the method is to blow wind into the top of the closed headbox box, and apply uniform wind to the top of the box full of slurry Press to make the slurry water evenly distributed in the headbox of the forming section of the paper machine. The device comprises a slurry tank (1), a closed headbox (2), a slurry feeding pipe (3) connecting the slurry tank (1) and the closed headbox (2), and is arranged on the slurry feeding pipe The slurry inlet pump (4), the air inlet pipe (5) blowing to the top of the headbox box body and the low-pulsation Roots blower (6) installed on the air inlet pipe. The invention can evenly distribute the pulp water in the head box of the forming part of the paper machine, so as to obtain a paper base with uniform thickness.

Description

technical field [0001] The invention belongs to the technical field of the headbox of the forming section of a paper machine. Background technique [0002] The forming section of a paper machine is usually composed of a headbox, breast roll, forming wire, suction box, couch roll, etc. The pulp feed pump pumps the pulp from the flow delivery system to the headbox, and the pulp box is filled after passing through the pulp distributor. Then it is sprayed from the pulp outlet to the forming net, and the paper base is obtained after dehydration. Among them, the uniformity of the pulp on the net has a great influence on the quality of the paper, and the unevenness of the pulp on the net will lead to uneven thickness of the prepared paper base, which seriously affects The thickness uniformity of the finished paper and the performance of the paper. The main slurry inlet pipe of the existing headbox slurry distributor adopts a square conical return pipe, and the internal pressure ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F1/04
CPCD21F1/04
Inventor 张春华王康陈琼张凯赵文勇陈红伟
Owner 建水春秋纸业有限公司
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