Hydrodynamic inclined-wire stock discharge box

A headbox, hydraulic technology, used in the paper industry, can solve the problems of fiber flocculation, slow pulp speed, fiber floating or sinking, etc., to achieve good uniformity and air permeability, less floor space, and easy operation. Effect

Inactive Publication Date: 2011-08-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The headbox belongs to the open headbox, and there are certain restrictions when using it: (1) When the slurry passes through the headbox, one side communicates with the atmosphere, and there is a free slurry surface, so it is only suitable for medium and low speed inclined screens (2) It is suitable for making fibers with the

Method used

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  • Hydrodynamic inclined-wire stock discharge box
  • Hydrodynamic inclined-wire stock discharge box
  • Hydrodynamic inclined-wire stock discharge box

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1 Papermaking of single-layer hydraulic inclined wire headbox and dry bag paper

[0026] Such as figure 1 As shown, the single-layer hydraulic inclined wire headbox consists of an adjusting mechanism 1, a side plate 2, an upper lip plate 3, a lower lip plate 4, a damping element 5, a top plate 6, a bottom plate 7, a banner dilution water device 8, and a joint expander 9. And the support 10 constitutes. The expansion joint 9 is fixed on the slurry inlet side of the box body; the adjusting mechanism 1 is fixed on the upper lip plate 3 of the box body; the banner dilution water device 8 is fixed on the top plate 6 of the box body; the box body is connected to the upper part of the support 10 through a flange, The lower part of the support is installed on the inclined net frame through a hinge, and the headbox is rotated by external force to adjust the angle of the headbox and the distance between the headbox and the inclined net part.

[0027] Such as figure 2 As show...

Example Embodiment

[0031] Example 2 Papermaking of double-layer hydraulic inclined wire headbox and tea filter paper

[0032] Such as image 3 As shown, the double-layer hydraulic inclined wire headbox consists of an adjusting mechanism 1, a side plate 2, an upper lip plate 3, a lower lip plate 4, a damping element 5, a top plate 6, a bottom plate 7, a banner dilution water device 8, and a joint expander 9. , The support 10, the flare 11 and the partition 12 constitute. The main difference between it and the single-layer hydraulic headbox is that there are two sets of expander and horizontal dilution water device. The horizontal dilution water device of the upper slurry is fixed on the top plate of the box; the horizontal dilution water device of the lower slurry is fixed. On the bottom of the box; there are two sets of damping elements along the direction of slurry feeding of each layer. The two layers of slurry are separated by a partition. The position of the partition near the mesh part is a f...

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PUM

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Abstract

The invention discloses a hydrodynamic inclined-wire stock discharge box. The stock discharge box is arranged above an inclined wire part of an inclined wire machine, and comprises an adjusting mechanism, a box, a supporting seat, more than two groups of damping elements, more than one set of transverse-amplitude water diluting device and more than one set of section amplifying device, wherein the box is connected to the upper part of the supporting seat through a flange; the lower part of the supporting seat is arranged on an inclined wire frame through a hinge; and under the action of external force, the stock discharge box is rotated, and the angle of the stock discharge box and the distance between the stock discharge box and the inclined wire part are adjusted. The hydrodynamic inclined-wire stock discharge box can be applied to single-layer sizing and multi-layer sizing, is particularly suitable for the inclined wire machine, and has the advantages of compact structure, small floor area, easiness and convenience for operation and the like. The hydrodynamic inclined-wire stock discharge box can be used for manufacturing long fibered pulp with low concentration together with an inclined wire former and producing special paper with high uniformity and high air permeability.

Description

technical field [0001] The invention relates to the field of papermaking industry, in particular to a hydraulic inclined wire headbox, which can be used in cooperation with an inclined wire former to produce special paper types. Background technique [0002] Using non-plant fibers such as mineral fibers, metal fibers and synthetic fibers, or blending with plant fibers, or making them separately, many functional papers with excellent performance can be produced to meet the different needs of various industries. [0003] The non-plant fibers or some long plant fibers used for papermaking are relatively long (up to more than ten millimeters), and ordinary non-plant fibers are also hydrophobic, so the slurry suspension containing non-plant fibers needs to be highly diluted (to a low concentration of 0.02%-0.08%), in order to obtain good dispersion and sheet formation. The low forming concentration of long fibers means that a large amount of water needs to be removed during pape...

Claims

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Application Information

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IPC IPC(8): D21F1/00
Inventor 樊慧明刘建安马雅琦
Owner SOUTH CHINA UNIV OF TECH
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