Papermaking device, paper machine and papermaking method

Abstract

The invention provides a papermaking device, a paper machine and a papermaking method. The papermaking device comprises a filtering part (5), wherein the filtering part (5) comprises a landing net (56) which acts at a prescribed moving speed, pulps and filters a liquid containing paper pulp; a dehydration part (6), wherein the dehydration part (6) is arranged on the rear part of the filtering part (5) and is provided with a dehydration belt (63) which acts at a prescribed moving speed and performs dehydration on the filtered liquid containing paper pulp; and suction parts (52, 56), wherein the suction parts (52, 56) suck the liquid containing paper pulp through at least one of the landing net (56) and the dehydration belt (63), the suction parts (52, 56) are provided with a suction member (22) and a suction pump (25), the suction member (22) is provided with a suction port (28), the suction pump (25) is used for sucking from the suction port (28) at a prescribed suction quality, the suction pump (25) is formed by a hose pump (35), the hose pump (35) comprises a flexible pipe (36) and a pressing member (38), and the pressing member (38) presses the flexible pipe (36) towards a discharging side while transporting contents of the flexible pipe (36).

Description

technical field [0001] The present invention relates to a papermaking device, a paper machine and a papermaking method. Background technique [0002] Conventionally, a papermaking apparatus is known in which a suction roll is provided in a filtering section or a dehydrating section. For example, in the papermaking device disclosed in Japanese Patent Laid-Open Publication No. 2003-49378, wet paper is formed by making a liquid containing pulp as a paper raw material liquid on a wire mesh made of a wire mesh or the like, and the wire mesh is placed on the outer peripheral surface of the suction roll. During the movement, the vacuum pump connected to the inner space of the suction roller sucks moisture from the wet paper on the net to dehydrate it. [0003] However, the papermaking apparatus described above is a large-scale facility installed in a paper factory. In a large-scale papermaking device, the papermaking speed is usually above 1000 m / min. However, in a small paper m...

AI Technical Summary

Problems solved by technology

However, in small paper machines installed in offices or corporate premises, etc., the moving speed of the wire is slow, and the paper making speed is much slower than that of a large paper machine in a paper factory.

[0004] Therefore, if a small paper machine adopts a vacuum pump for a large papermaking device installed in a paper factory, the suction capacity of the vacuum pump is excessive compared to the slow papermaking speed of the small paper machine, which makes the suction efficiency worse, sometimes Will affect the paper quality of the product

In addition, small paper machines become larger devices due to the installation of vacuum pumps with excess suction capacity, etc.

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