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Refining plate with refining rods with edge generating rod cavities

A fine grinding plate, fine grinding technology, applied in pulp beating/refining methods, grain processing, papermaking, etc., can solve problems such as impact

Active Publication Date: 2021-08-31
VALMET OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although this solution is very satisfactory for extending the life of the refining plate, the added structure may negatively affect the material flow on the refining plate

Method used

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  • Refining plate with refining rods with edge generating rod cavities
  • Refining plate with refining rods with edge generating rod cavities
  • Refining plate with refining rods with edge generating rod cavities

Examples

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Embodiment Construction

[0032] Throughout the drawings, the same reference numerals are used for similar or corresponding elements.

[0033] Generally, unless a different meaning is explicitly given, all terms used herein should be interpreted according to their ordinary meaning in the relevant technical field, and / or implied from the context in which it is used. Unless expressly stated otherwise, all references to an / an / the element, device, component, etc., should be construed publicly as referring to at least one instance of the element, device, component, etc. Any feature of any embodiment disclosed herein can be applied to any other embodiment, where appropriate. Likewise, any advantage of any embodiment can be applied to any other embodiment, and vice versa. Other objects, features and advantages of the accompanying embodiments will be apparent from the following description.

[0034] In order to better understand the proposed technology, it may be useful to start with a brief overview of a co...

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PUM

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Abstract

A refining plate (1) adapted to be attached to a rotatable refining disc (10) on a refiner (100) for mechanically treating lignocellulosic material is disclosed. The refining plate (1) comprises a refining surface (11) adapted to be arranged opposite a second refining surface (21) of a second refining disc (20) on said refiner (100). The refining surface (11) is provided with a plurality of refining bars (110), wherein at least one refining bar (110) is provided with cavities (111) which are at least partially embedded in the refining bars in the article. In addition, at least one cavity (111) provided on at least one refining rod (110) has one end (111a) arranged closer to the leading edge (112) of the refining rod (110) and arranged to One end (111b) is closer to the trailing edge (113) of the refining rod, and wherein the depth dimension of the cavity at the end (111a) is smaller than the depth dimension of the cavity at the end (111b).

Description

technical field [0001] The proposed technology generally relates to refining plates for disc refiners. More specifically, it relates to a refining plate comprising refining rods for the mechanical treatment of lignocellulosic material in a refiner, wherein at least some of the refining rods on the refining plate are provided with The edges create cavities. Background technique [0002] A common mechanical pulp refiner usually comprises two relatively rotating discs, eg a fixed disc and a rotating disc, to which refining plates, also called refining elements or refining sections, are attached. During use of the refiner, lignocellulosic material, such as wood fibers, is mechanically treated, eg ground or processed, between the refining plates of two counter-rotating discs. In order to obtain efficient material treatment, the refining surface of a refining plate is usually provided with refining bars extending radially along the plate, so that both the refining bars themselve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C7/12D21B1/14D21D1/30
CPCB02C7/12B02C2210/02D21D1/306D21B1/14D21D1/008D21D1/303
Inventor T·林德布罗姆
Owner VALMET OY