Complementary type pulp distributing method of headbox

A complementary headbox technology, applied in textiles and papermaking, paper machine, paper machine wet end, etc., can solve the problem of width and other problems

Inactive Publication Date: 2016-04-13
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the slurry distribution performance of the circumferential slurry distribution method has been significantly improved, the location of the slurry distribution is relatively concentrated, so the applicable width is difficult to meet the increasing requirements

Method used

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  • Complementary type pulp distributing method of headbox
  • Complementary type pulp distributing method of headbox
  • Complementary type pulp distributing method of headbox

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] refer to figure 1 , the complementary type slurry distributing method provided by the present invention, the method comprises:

[0022] a. Provide a complementary slurry distribution device, which is to stack two square cone slurry distribution main pipes (1, 5) with the same structure up and down. The corresponding positions of the slurry distribution main pipes (1, 5) are respectively connected to the mixing chamber through a respective branch pipe 2, and there is a discharge pipe 4 on the mixing chamber 3;

[0023] b. The slurry flows in opposite directions from the inlets of the two square cone slurry main pipes (1, 5), enters the mixing chamber 3 through respective branch pipes for mixing, and is discharged through the discharge pipe 4 after mixing.

[0024] Among the above, the branch pipes on the two square cone cloth slurry main pipes (1, 5) have the same number as the discharge pipes 4 on the mixing chamber 3.

[0025] The mass flow rate of any discharge pipe...

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PUM

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Abstract

The present invention provides a complementary type pulp distributing method of a headbox. The method comprises the steps of (a) providing a complementary type pulp distributor, wherein the complementary type pulp distributor is formed by stacking two rectangular tapered pulp distributing total pipes having the same structure up and down, the two rectangular tapered pulp distributing total pipes are symmetrical left and right and are not connected with each other, the two rectangular tapered pulp distributing total pipes are connected to a mixing chamber through respective branch pipes at corresponding positions, and the mixing chamber is provided with discharge pipes; and (b) enabling pulp to oppositely flow into inlets of the two rectangular tapered pulp distributing total pipes and enter the mixing chamber through the respective branch pipes for mixing, and discharging the pulp through the discharge pipes after the pulp is mixed. According to the complementary type pulp distributing method, complementary type mixing of high flow and low flow can be achieved, the pulp in the mixing chamber tends to uniform, and the purpose of uniformly distributing the pulp is achieved.

Description

technical field [0001] The invention relates to the technical field of pulp distribution of a hydraulic headbox, in particular to a headbox complementary pulp distribution method. Background technique [0002] During the development of the headbox, the expanded channel type slurry distribution method, the multiple split type slurry distribution method, the middle feed multi-branch tube type slurry distribution method, and the cross-flow type slurry distribution method have been used successively, but due to their respective Insurmountable disadvantages, no longer used. At the end of the 20th century, the headbox basically adopted the method of one-way slurry feeding through square cone tubes and slurry distribution through branch tubes. Due to the complex shape of the rear wall of the square cone header, the linear simplified or segmented approximate header is often used in engineering. Therefore, a certain lateral pressure difference is brought to the slurry distribution, ...

Claims

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Application Information

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IPC IPC(8): D21F1/06
CPCD21F1/06
Inventor 刘伟冀晓辉
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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