Slope screen former structure

Abstract

The invention provides a slope screen former structure comprising a slope screen pulp flowing box and a forming box, wherein a pulp flowing box body is connected with a square taper tube through a flange, an upper lip plate is arranged in the pulp flowing box body, the square taper tube is composed of a plurality of rectangular cavities which are separated through partition boards, each cavity is provided with an independent pulp inlet and a pulp return opening, the cavities are distributed in the horizontal direction at equal pressure, and a hole plate is embedded in the pulp flowing box body. One end of the hole plate abuts against the square taper tube and the partition boards among the cavities in a seamless mode, the other end of the hole plate is connected with a pulp partition board in an embedded mode, one end of a bottom layer channel plate in the pulp flowing box body is attached to a slope screen portion of the forming box through apron cloth, and the included angle between the slope screen portion of the forming box and the horizontal direction is alpha. Water seal plates on the lower edge of the slope screen portion of the forming box and on the lower edges of two sides of the pulp flowing box body form a weir. The forming box is spliced by three independent box bodies, and a white water outlet is formed in the bottom of each box body. The slope screen former structure is used for manufacturing special paper, pulp can be fed independently in layers, and evenness and softness of wet paper are improved.

Description

technical field [0001] The invention relates to a former structure, especially an inclined wire former structure, which is mainly used in the field of manufacturing special paper (such as heat-sealed tea bag paper, aramid paper, etc.) with chemical fiber and wood pulp as raw materials. Background technique [0002] At present, there are three main structures of formers for papermaking in China: the first one is the side-wave sizing cylinder former, but this type of cylinder former is not ideal for forming long-fiber chemical fibers, and the paper has a large vertical-to-horizontal tension ratio and poor evenness. Good, but the quality of the product is not up to the standard. The second is to use the combination of ordinary inclined wire headbox and rotary wire former. Compared with the first one, the forming effect is improved, but the product quality is still lacking. The third type is an inclined wire former that can be used for multi-layer sizing, but it needs to be equ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are three main structures of formers for papermaking in China: the first one is the side-wave sizing cylinder former, but this type of cylinder former is not ideal for forming long-fiber chemical fibers, and the paper has a large vertical-to-horizontal tension ratio and poor evenness. Good, but the product quality is not up to the level of excellence

The second is to use the combination of ordinary inclined wire headbox and rotary wire former. Compared with the first one, the forming effect is improved, but the product quality is still lacking.

The third type is an inclined wire former that can be used for multi-layer sizing, but it needs to be equipped with multiple sets of pulp feeding and returning pipes and independent homogenizing components

This type of product has complex structure and high manufacturing cost

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