Flow box

A technology of headbox and pulp distributing, which is applied in the direction of textiles and papermaking, paper machine, paper machine wet end, etc. It can solve the problems of low paper evenness, unstable pulp flow, large cross flow, etc., and achieve stable pulp flow, Improve uniformity and reduce cross flow

Active Publication Date: 2015-06-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a headbox to solve the problems of unstable stock flow, large cross flow and low sheet evenness in the prior art

Method used

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with specific embodiments and accompanying drawings, which are explanations of the present invention rather than limitations.

[0028] see figure 1 , the headbox of the present invention comprises a cylindrical housing 1 placed horizontally, and a cylindrical roller 2 with a diameter smaller than the diameter of the cylindrical housing 1 is coaxially sleeved inside the cylindrical housing 1, and the outer surface of the roller 2 is There is a gap 10 between the inner surface of the cylindrical shell 1, the axis of the roller 2 coincides with the axis of the cylindrical shell 1, the roller 2 can rotate around its own axis in the clockwise direction shown by the arrow in the figure, and the roller 2 There are a number of annular grooves 2b on the outer roller surface of the cylindrical housing 1, and a slurry inlet 3 is provided at the lower right of the cylindrical shell 1, and an equalization...

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Abstract

The invention discloses a flow box, and belongs to the field of paper-making mechanical equipment. The flow box comprises a cylindrical shell, wherein a pulp inlet and a pulp outlet are formed on the cylindrical shell; a pulp applying device is arranged at the pulp outlet; the pulp inlet is communicated with a pulp distributing device; a roller capable of rotating around the axis thereof is coaxially sleeved inside the cylindrical shell; a clearance is formed between the outer roll surface of the roller and the inner surface of the cylindrical shell. According to the invention, the roller is coaxially sleeved inside the cylindrical shell and the roller can rotate around the axis thereof, so that when the roller rotates at a high speed, under the driving of the pressure difference and the roll surface, pulp flows along with the roll surface in the clearance formed between the roll surface and the cylindrical shell; the flowing speed of the pulp is smaller than the motional speed of the roll surface, so that friction is generated, a turbulent flow is generated in a pulp flow, flocculated fiber clusters in the pulp flow can be dispersed, and thus the evenness of a paper sheet is improved; and the flow box is simple in structure and convenient to manufacture and is applicable to paper-making machines with high, medium and low speeds.

Description

technical field [0001] The invention belongs to the field of papermaking machinery and equipment, and in particular relates to a headbox. Background technique [0002] The headbox is a key device of the paper machine, which plays a key role in making good quality paper sheets. One of the basic tasks of the headbox is to ensure that the fiber suspension is evenly distributed along the transverse direction of the paper machine, so as to minimize the transverse quantitative difference of the paper sheet; another basic task of the headbox is to ensure that the fibers in the fiber suspension are evenly dispersed In the water body, minimize the flocculation in the fiber suspension to improve the formation of the paper as much as possible. [0003] The headbox is generally divided into three parts according to the working principle: the pulp distributor, the box body and leveling components, and the sizing device. [0004] The function of the pulp distributor is to evenly distrib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F1/02D21F1/04
Inventor 侯顺利
Owner SHAANXI UNIV OF SCI & TECH
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