SU476352A1 - A device for treating pulp - Google Patents

Description

one

The invention is intended for use in the pulp and paper industry, for example, in the wastewater treatment departments of the sulphite-cellulose production with preservation of the morphological structure of the fibers.

A device for the treatment of pulp, including corn, bilami, forked lonasti, perforated glass and drive.

The main disadvantage of the known device is that it does not provide an improvement in the quality of fiber bundle separation, an intensification of the resin-free process due to the friction of the fibers on the metal surface and the elimination of knots and lack of penetration into the flow of cleaned mass. The aim of the invention is to eliminate this drawback.

This is achieved by installing sets of concentric rotating and stationary cylinders in the area between the perforated glass and the housing, wherein the rotating cylinders mounted on the beaters are made from a set of rotor blades, and the fixed cylinders mounted on the bottom of the housing are assembled using upper and lower rings from a set of vertical stator plates with gaps between the plates of each cylinder, decreasing to the periphery of the body, and in the lower part of the Cornus

a jumper is installed and the gaps between the stator plates of the jumper level in all cylinders are the same and equal to the wide openings of the non-perforated cup.

The gaps between the surface of the stator plates and the edges of the rotor blades are equal to the width of the holes in the perforated glass.

FIG. 1 shows the proposed device, a general view; in fig. 2 - section along the AA

FIG. one; in fig. 3-6 - rotating cylinder, cuts but BB, BB, HG, D-D; in fig. 7 is a section along E-E in FIG. one.

The proposed device includes a collapsible corn 1, reinforced in the upper part

shaft 2, the lower end of the shaft is centered in a sub peak, which has gaps for supplying part of the water going to dilute the mass.

Bills 3 and forked blades 4 are mounted on the shaft. Rotating

cylinders consisting of upper half-rings 5, lower 6 connected by rotor vanes 7. The cylinder consists of two halves fastened together with bolts. The blades are rotated at an angle of 45-50 ° relative to

radial direction: 1-2 blades in the row rotated in the opposite direction. A glass of 8 consisting of two halves is bolted to the bottom of the corn. It has a perforated surface in the middle part with apertures of 20–25 mm. Several horizontal partitions are welded to the walls of the glass from the inside. To create a developed surface, bolts, collapsible cylinders, made of vertical plates, with gaps between them, are fixed to the bottom of the case. The ratio of the width of the plates to the width of the vertical gaps between them varies as it moves to the periphery within 9: 1 - 12: 1. In the upper part of the device, the width of the gaps between the plates 10 decreases as moving to the periphery while the width of the holes of the central cup 8 varies from 1: 1 to 0.4: 1. At the bottom of the cylinders, this ratio is 1: 1. In the outer section adjacent to the inner surface of the wall of the housing 1, a jumper 11 is installed, preventing large knots from falling from the lower part to the upper part, from which the cleaned mass flows out. For receiving pulp, a receiving box 12 is installed in the upper part of the device. A fitting 13 is installed for releasing the cleaned mass, and a fitting 14 is installed for releasing knots. The pipelines 15 are mounted for water supply. The device operates as follows. The pulp is washed with a moisture content of up to 85% is fed into the receiving box 12 and starts loosening and mixing with water with forked blades 4 inside the perforated cup 8. Water is also fed here to dilute to a concentration of 4-6%, a small amount of it is introduced through the gaps, available in the centering bushing of the lower end of the shaft. Under the action of the developed centrifugal forces and the rotor effect of the blades, the mass through the holes of the glass 8 enters the separation and resinification zone, but gradually moves both in the radial direction and along the surface of the plates 10. Each subsequent row has in the upper part smaller gaps between the plates, thanks to what the mass reaching the nozzle 13 has no knots exceeding 6-8 mm. Heavier knots are swirled down and with a small amount of mass out of the clamp 14. The ratio of the quantities of mass produced from fittings 13 and 14 can be adjusted by valves installed after the indicated fittings. As a result of the soft processing of cellulose in the proposed device, the fiber bundles are broken up, preserving their morphological structure, the transfer of a significant part of the surface resin into the liquid phase and the separation of large knots from the bulk of the cellulosic pulp. The subject of the invention I. A device for processing pulp, including a housing, a shaft with beaters, forked blades, a perforated cup and a drive, characterized in that, in order to improve the quality of the fiber bundle separation, to intensify the grinding process by grinding the fibers and removing the metal Knots of knots and lack of penetration into the flow of the cleaned mass, sets of concentric rotating and stationary cylinders are installed in the area between the perforated cup and the body, while fixed on the b The rotating rotary cylinders are made from a set of rotor blades, and the stationary cylinders mounted on the bottom of the case are assembled using upper and lower rings from a set of vertical stator plates with gaps between the plates of each cylinder decreasing to the periphery of the case, with a jumper installed in the lower part of the case, and the gaps between the stator plates of the jumper level in all cylinders are the same and equal to the width of the holes in the perforated glass. 2. A device according to claim 1, characterized in that the gaps between the surface of the stator plates and the edges of the rotor blades are equal to the width of the holes of the perforated glass.

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