SU896129A1 - Device for cleaning fibrous mass - Google Patents

Description

(5) DEVICE FOR CLEANING FIBER MASS

I

This invention relates to closed screen sorts and can be used in the pulp and paper industry for sorting and cleaning fibrous semi-finished products and waste paper.

A device for cleaning is known, which includes a vertical cylindrical body with nozzles for feeding the pulp and discharging the cleaned mass and waste, washing offspring and perforated sieve J. coaxially installed in the body.

The known device for cleaning the pulp does not provide the necessary generation of pulsations of the sorted mass, which does not allow to create a high sorting efficiency.

The purpose of the image, eteni - further increase productivity and cleaning efficiency.

The goal is achieved in that the device has vertical strips.

installed on the inner surface of the housing, and the surface of the sieve is made with corrugations parallel to the vertical slats.

FIG. 1 shows the proposed device, general view, section; in fig. 2 shows section A-A in FIG. one.

The device includes a vertical cylindrical body 1, a perforated sieve 2, washing i, a shower J

10 and the drive (not shown). The housing 1 is equipped with a tangential inlet nozzle C, an axial nozzle 5 for sorted mass and a radial nozzle 6 with a collection of “5 strokes 7 and closed with a spherical lid 8 with an air valve 9 on top. and vertical

20 cylindrical body 1 through the slot 11 in the body 1, the length of which is equal to the height of the sieve. At the same time, the section of waste collection 7 is increased from top to bottom, ensuring equal conditions for waste disposal along the entire height of the screen. The lower part of the collection of waste 7 is connected to the radial nozzle of waste 6. In the lower bottom 12 of the vertical cylindrical body 1 there is an opening 13 connected to the nozzle 5 for removal of the sorted mass. The sieve 2 is a cylindrical perforated shell 14 fixed to the flanges 15 and 1b.

The cylindrical perforated shell 1t has longitudinal axial corrugations and is installed with a fixed axial clearance above the bottom of the vertical cylindrical body 1. The perforated sieve 2 is located in the vertical cylindrical body 1 eccentrically and forming with the vertical cylindrical body the sorting zone 17, the cross section of which changes along the mass movement from the tangential inlet 4 to the radial nozzle from the strokes 6. Inside the vertical cylindrical body 1 on its side surface semicircular strips are set at 18. The value of the minimum gap between the planks and the perforated Z-B mm sieve. On the bottom 12 of the vertical cylindrical body 1, a bowl 19 is installed with a bearing assembly of the drive shaft 20. The rotating perforated sieve 2 is mounted on the yoke 21 of the drive shaft 20 by means of a support flange 15, a pressing ring 22 and a nut 23. Inside the perforated sieve 2 there is a flushing

drop 3, providing continuous washing of the perforated sieve with water under pressure to B.B-t.O kgf / cm

The device works in the following way.

Claims (1)

The fibrous mass through the nozzle is fed into the sorting zone 17, passes through the openings of the cylindrical perforated shell 14 into the internal cavity 24 of the perforated sieve 2, and is removed through the nozzle 5 to remove the sorted mass. waste collection 7 and through the slot 11 into the internal cavity 25 of the waste collection 7 and the radial nozzle 5 to remove waste. Continuous cleaning of the perforated shell 14 from Za-p knowledge and settled fibers is achieved by the combined effect of the corrugated surface and the slats on the flow and as a result of continuous washing with water from the washing drop 3. Apparatus for feeding the pulp and removal of the cleaned mass and waste, the washing drop and the perforated sieve coaxially installed in the body,. characterized in that, in order to increase productivity and efficiency, it has vertical strips mounted on the inner surface of the housing, and the surface of the sieve is made with corrugations parallel to the vertical slats. Sources of information taken into account in the examination 1. USSR author's certificate in application No. 2b09b05 / 12, 1978. 2J. Zl 2 teV ..