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Headbox flow control mechanism, control method and headbox

A flow control and headbox technology, applied in paper machine, wet end of paper machine, textile and paper making, etc., can solve the problem of single method, and achieve the effect of improving dispersion efficiency, improving dispersion effect and preventing reflocculation

Pending Publication Date: 2022-03-15
ZHEJIANG HUAZHANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The flow of the headbox has a great influence on the anti-flocculation ability of the headbox and the uniformity of the paper, so the adjustment of the flow is very important. Generally, the flow is adjusted by adjusting the opening of the lip. The existing headbox The flow control mechanism generally adjusts the opening of the lip by adjusting the angle of the upper lip, which is relatively simple

Method used

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  • Headbox flow control mechanism, control method and headbox
  • Headbox flow control mechanism, control method and headbox
  • Headbox flow control mechanism, control method and headbox

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The embodiment of the present invention provides a headbox flow control mechanism, which is installed at the output end of the turbulence generator in the headbox. The headbox is a part of a modern paper machine and has been used in a modern paper machine. There is technology, it is a hydraulic headbox in this embodiment, and its specific structure is no longer described in detail, such as figure 1 As shown, the headbox flow control mechanism includes:

[0041] The upper lip plate assembly 1 includes an upper lip plate 101, a first mounting frame 105, a first angle adjustment mechanism and a first moving mechanism. The end of the upper lip plate 101 close to the turbulence generator is hingedly mounted on the first mounting frame 105, so The first angle mechanism is installed on the first mounting frame 105 for adjusting the angle of the upper lip 101. The first mounting frame 105 is slidably connected with the headbox. Preferably, the first mounting frame 105 is fixed ...

Embodiment 2

[0049] This embodiment is on the basis of embodiment 1, as Figure 2-3 As shown, it also includes a small lip plate assembly 3, which includes a small lip plate 304 and a driving member. The small lip plate 304 is slidably installed on the end of the upper lip plate 101 away from the turbulence generator, and can slide through the slide rail and the slide groove. The method can also be through the sliding method of the sliding rod and the sliding sleeve, the small lip plate 304 is attached to the end surface of the upper lip plate 101, and the driving member is used to drive the small lip plate 304 to slide along the end surface of the upper lip plate 101, and further open the lip degree, preferably, the drive member includes a third motor 305, a third threaded rod 302, a third internally threaded sleeve 303, a fourth threaded rod 307, a fourth internally threaded sleeve 306, a scissors mechanism 308, and a mounting plate 309 and connecting block 310, the first mounting frame ...

Embodiment 3

[0053] This embodiment is on the basis of embodiment 2, as Figure 4-5 As shown, a headbox includes the headbox flow control mechanism of embodiment 2, and also includes a connecting pipe 4 for slurry supply connected to the turbulence generator, and the inner wall of the connecting pipe 4 is spaced A plurality of bosses 401 are provided, and the cross-section of the bosses 401 is triangular. A dispersing roller 402 is fixedly installed on an edge of the boss 401 away from the inner wall of the connecting pipe 4, and a plurality of dispersing rollers 402 are arranged on the When the slurry flow passes through the connecting pipe 4, it flows along the boss 401 at a variable speed. When it flows to the top of the boss 401, it passes through the dispersion roller 402 and the impact dispersion of the upper convex strip, which can promote fiber dispersion and prevent fiber Flocculation improves the formation of paper sheets.

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PUM

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Abstract

The invention is applicable to the technical field of headboxes, and provides a headbox flow control mechanism which comprises an upper lip plate assembly comprising an upper lip plate, a first mounting frame, a first angle adjusting mechanism and a first moving mechanism, and a lower lip plate assembly comprising a lower lip plate, a second mounting frame, a second angle adjusting mechanism and a second moving mechanism, the upper lip plate assembly and the lower lip plate assembly are located on the upper side and the lower side of the turbulence generator respectively, the invention further discloses a control method based on the control mechanism and the headbox comprising the control mechanism, the upper lip plate assembly and the lower lip plate assembly are arranged, the opening degree of a lip opening can be adjusted by adjusting the angle of an upper lip plate, and therefore the effect of adjusting the flow is achieved; the lip opening degree and the guniting angle can be adjusted by adjusting the angle of the lower lip plate, the position of the lip can be adjusted by driving the upper lip plate to move horizontally or driving the lower lip plate to move horizontally, the lip opening degree, the guniting angle and the position can be adjusted in multiple adjusting modes, and adaptability is improved.

Description

technical field [0001] The invention belongs to the technical field of headboxes, and in particular relates to a headbox flow control mechanism, a control method and a headbox. Background technique [0002] The headbox is a key part of a modern paper machine. Its structure and properties play a decisive role in the formation of paper sheets and the quality of paper; it can effectively disperse fibers, and the high-turbulence headbox can generate high-intensity micro-turbulence, which can effectively disperse fibers and prevent fiber precipitation and re-flocculation , can effectively improve the strength of the paper; [0003] The flow of the headbox has a great influence on the anti-flocculation ability of the headbox and the uniformity of the paper, so the adjustment of the flow is very important. Generally, the flow is adjusted by adjusting the opening of the lip. The existing headbox The flow control mechanism generally adjusts the opening of the lip by adjusting the a...

Claims

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Application Information

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IPC IPC(8): D21F1/04D21F1/06
CPCD21F1/04D21F1/06
Inventor 王国君傅哲凡潘有余应艳徐悦阳
Owner ZHEJIANG HUAZHANG TECH