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Method and apparatus for supplying fibre pulp to a formation support

A technology for forming parts and supports, applied in the wet end of paper machines, papermaking, paper machines, etc., can solve problems such as the decline in the quality of final products, the inability to remove defects, and difficulties in fiber orientation

Inactive Publication Date: 2013-03-13
METSO PAPER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the defects that occur in the pulp remain in the final product and degrade the quality of the final product because the effects of the defects can no longer be removed
Creating uniform fiber orientation is especially difficult for webs formed from high consistency pulp

Method used

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  • Method and apparatus for supplying fibre pulp to a formation support
  • Method and apparatus for supplying fibre pulp to a formation support
  • Method and apparatus for supplying fibre pulp to a formation support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] figure 1 The principle of manufacturing a product in the form of a continuous web W by the method according to the invention is shown. The water-based high-consistency fiber suspension is fed from the pulp container by means of a pump (not shown) through the distribution pipe 9 and the supply pipe 7 to the headbox consisting of the spreading unit 3 and the fluidization chamber 1 . The pulp is discharged from the fluidization chamber 1 through the slices into a continuously forwardly extending and permeable forming section support 2, eg a wire. The concentration of fiber pulp is 4% to 20%, and fiber pulp within this concentration range can be called high consistency pulp. The consistency of the pulp is preferably in the range of 5% to 15%. The fiber pulp carried by the forming section support 2 is gradually dewatered through the forming section support 2, wherein the dry matter content of the fiber pulp increases and the fiber product W begins to form a cohesive textur...

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PUM

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Abstract

I n the method in order to supply fibre pulp to a formation support, fibre pulp is spread onto a wider area by guiding the flow coming from a supply pipe against a flow baffle (3c) located in closed space, which baffle guides and spreads the flow to a wide flow. The flow is directed towards a curved wall at the edge of the closed space, which wall directs the flow to be a substantially parallel flow to the other side of the flow baffle (3c) through a flow-through passage between the curved wall and the flow baffle (3c). The wide pulp flow coming from the other side of the flow baffle is kept fluidized by conveying the pulp flow to the flow channel (4) wherein energy is provided to the pulp flow for example via a wall limiting the flow channel after which the pulp is supplied from a wide slice (5) to a formation support (2).

Description

technical field [0001] The invention relates to a device for feeding fiber pulp to a forming section support according to the preamble of claim 1 attached hereto. The invention also relates to a device for carrying out a method of the type set forth in the preamble of claim 8 appended hereto. Background technique [0002] A spreading apparatus is known earlier which can be used to distribute the fibrous pulp supplied from the pipe over a wider area. In this known device the pulp is spread over a wider area by means of a flat casing placed perpendicularly to the tube and having a parabolic profile. Inside the hood, baffles are placed transversely to the feed direction to spread the pulp in a fan-like fashion in a parabolic inner wall from which the pulp is directed in parallel flow to the other side of the baffles and the pulp flows in a A wide front flows from a gap in the straight edge of the shroud. Several of these units can be placed side by side. This structure is p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F1/02
CPCD21F1/02
Inventor 威乐·兰斯米斯哈里·尼米
Owner METSO PAPER INC