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Vacuum squeezing and dewatering papermaking device for papermaking

A press dehydration and vacuum technology, applied in papermaking, papermaking machines, press parts, etc., can solve the problem of not stopping the development of new press rolls

Inactive Publication Date: 2017-01-11
JIANGSU LEE & MAN PAPER MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Until now, researchers have not stopped developing new press rolls

Method used

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  • Vacuum squeezing and dewatering papermaking device for papermaking

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Embodiment Construction

[0020] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention.

[0021] Such as figure 1 As shown, a kind of vacuum press dehydration papermaking for papermaking, comprising: two press rolls squeezed together, and the two press rolls are arranged up and down, are respectively the upper roll and the lower roll, it is characterized in that the press roll shaft The center is a hollow structure, the positive air pressure device provided at the end of the upper roll communicates with its hollow structure, the negative air device provided at the end of the lower roll communicates with its hollow structure, and the roll wall of the press roll consists of two layers The structure is respectively an airflow guide l...

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Abstract

The invention relates to a vacuum squeezing and dewatering papermaking device for papermaking. The device comprises two press rollers squeezed together and vertically arranged. The two press rollers are the upper roller and the lower roller. The device is characterized in that the axes of the press rollers are each of a hollow structure, a positive air pressure at one end of the upper roller is communicated with the hollow structure of the upper roller, a negative air pressure at one end of the lower roller is communicated with the hollow structure of the lower roller. The roller wall of each press roller comprises two layers of structures including an air flow guiding layer with vent holes and a capillary layer located outside the air flow guiding layer. The air flow guiding layer in the lower roller is filled with a balancing weight. The capillary layers are connected with the air flow guiding layers through bearings. The vent holes of the air flow guiding layer in the upper roller and the vent holes of the air flow guiding layer in the lower layer are all concentrated at tangent line positions between the upper roller and the lower roller.

Description

technical field [0001] The invention relates to a press roll, in particular to a vacuum press dehydration papermaking method for papermaking. Background technique [0002] Pressing is an essential process in the paper forming process, and its main function is to remove part of the water in the wet paper and solidify the paper. How to quickly squeeze out the moisture in the wet paper, and how to store and remove it reasonably is a problem that must be considered and solved in the research of press dehydration. Improving the pressing efficiency is a very important measure in the paper industry to improve product quality, save energy and reduce consumption, and improve economic benefits. [0003] The press dehydration of paper sheets is closely related to the structure and working mode of the press section of the paper machine, and is also related to the working parameters of the press equipment. The press section of the paper machine is mainly composed of press rolls. There ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F3/02D21F3/08
CPCD21F3/0272D21F3/08
Inventor 李文斌
Owner JIANGSU LEE & MAN PAPER MFG
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