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Apparatus for washing and dewatering pulp

A technology for pulp and equipment, applied in pulp dewatering, pulp beating/refining method, washing/replacement of pulp treatment liquid, etc., can solve problems such as affecting accessibility and bulky, reduce the number of connection points, and benefit the site Installation, the effect that is conducive to equipment installation

Inactive Publication Date: 2010-11-24
METSO PAPER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there are other devices and structures associated with the roller press, especially the fixed external devices adjacent to the roller press, which are bulky and impair accessibility when carrying out maintenance work, especially when inspecting , replacing press rolls, removing blockages, and cleaning the porous outer surface of the press roll or the area near the outer surface or the nip

Method used

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  • Apparatus for washing and dewatering pulp
  • Apparatus for washing and dewatering pulp
  • Apparatus for washing and dewatering pulp

Examples

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Embodiment Construction

[0020] figure 1 An example of an apparatus for washing and dewatering cellulose-containing pulp according to the present invention is shown. The device has a basically symmetrical structure with respect to the plane of symmetry 101, in figure 1 , The left side of the device (ie, the left side of the symmetry plane 101) shows that the device is in the open position, and the right side of the device (ie, the right side of the symmetry plane 101) shows that the device is in the closed working position. The device includes a first rotatable press roll 102 located on the left side of the device and a second rotatable press roll 104 located on the right side of the device. Each press roll 102, 104 has a permeable outer surface 106, 108. The outer surfaces 106, 108 are porous, that is, provided with a plurality of holes, and the outer surfaces 106, 108 are permeable to the filtrate extruded from the pulp. The shape of the hole is usually circular, but it can take any shape. The s...

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PUM

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Abstract

An apparatus for washing and dewatering pulp comprising a first and a second rotatable press roll (102, 104) having a permeable outer surface (106, 108), and a casing comprising a vat (114, 116, 118) in which the press rolls (102, 104) are installed, the press rolls (102, 104) defining a press nip (112) between them, in which press nip (112) the pulp is pressed. The vat (114, 116, 118) com- prises a first side vat segment (114) which partly encloses the outer surface (106) of the first press roll (102) and a second side vat segment (116) which partly en- closes the outer surface (108) of the second press roll (104). The casing comprises a first side casing member (115) provided with the first side vat segment (114) and a second side casing member (117) provided with the second side vat segment (116), at least the first side casing member (115) being pivotable about a rotationaxis(121). The apparatus comprises a first pulp distribution device (126) for distributing pulp on the first press roll (102) and a second pulp distribution device (128) for distributing pulp on the second press roll (104), where at least the first pulp distribution device (126) is mounted on the first side casing member (115), whereby the first pulp distribution device (126) is moved away from the first press roll (102) together with the first side casing member (115) when this is moved from its closed position to its opened position.

Description

Technical field [0001] The present invention relates to a device for washing and dewatering pulp (especially cellulose-containing pulp). The device includes two rotatable press rolls and a casing containing grooves. The press rolls have a permeable outer surface and are The pulp is squeezed between the rolls, and the squeezing roll is installed in the trough. The groove partially surrounds the outer surface of each press roll and includes a first side groove section and a second side groove section. The first side groove section partially surrounds the outer surface of the first press roll, and the second side groove section partially surrounds the second side groove section. The outer surface of the second press roll. The housing includes a first side housing member and a second side housing member. The first side housing member is provided with a first side groove section, and the second side housing member is provided with a second side groove section. At least the first sid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C9/06D21C9/18B30B9/20D21D1/40
CPCD21D1/40D21C9/06D21F1/78D21C9/18B30B9/20
Inventor J·白兰德F·普恩顿J·伦德博格
Owner METSO PAPER INC
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