SU1101487A1 - Sorting machine for treating fibrous suspension - Google Patents

Abstract

SORTING FOR FIBER SUSPENSION, comprising a housing with nozzles for supplying fiber suspensions and removal of sorted suspension and waste installed in the housing and forming between them a coping zone sieve drum and a rotor with an outer wall and channels for supplying the fiber suspension, which is in order to increase sorting efficiency, the rotor has an inner cylindrical wall and at least one annular partition fixed to its outer surface dividing the sort zone into separate chambers, channels for supplying fiber suspension are formed by the outer and inner walls of the rotor, and the sieve drum has at least one annular groove attached to it, connected to the waste discharge pipe and its corresponding sorting (P by means of a slit hole made in the sieve drum . // 4 00

Description

This invention relates to sorts for fiber suspension and can be used in pulp and paper industry.

The grading for fiber suspension, including a housing with nozzles for feeding the fiber suspension and discharging the sorted suspension and waste, installed in the housing and forming between the sorting zone, the sieve drum and the rotor with the outer wall and channels for supplying the fiber suspension 13.

In the known device, both the supply of the fibrous suspension to the sorting zone and the removal of the waste are carried out along the entire length of the system drum, in this case the supplied suspension is partially mixed with the waste, which reduces the sorting efficiency.

The purpose of the invention is to increase the sorting efficiency.

The goal is achieved by teM that in sorting for fiber suspension, comprising a housing with nozzles for supplying fiber suspension and removal of sorted suspension and waste, installed in the housing and forming between them a sorting zone, a sieve drum and a rotor with an outer wall and channels for supplying fiber The rotor has an internal cylindrical wall and at least one annular partition mounted on its outer surface, dividing the sorting zone into separate chambers The fibers for supplying the fibrous suspension are formed by the outer and inner walls of the rotor, and the sieve drum has at least one annular groove attached to it, connected to the branch pipe. The waste is removed and the corresponding sorting chamber is filled with a sieve | m drum.

This design provides separation of the sorting zone into independently operating sorting chambers. In this case, the waste, sorted in each of the chambers, is not shifted from the Fresh suspension supplied to the sorting in the other chambers.

FIG. 1 shows the sorting for a fiber suspension, a longitudinal section, in FIG. 2 - the node in FIG. one.

Sorting includes body 1 with nozzle 2 for feeding fiber

5 of the suspension On the sorting and nozzles 3 and 4, respectively, for removal of the sorted suspension of waste c. A sieve drum 5 and a roto are installed in the case t coaxially with it.

10 b with the outer wall 7, the channels for supplying the fibrous suspension 8 and the inner wall 9. On the outer wall 7 are fixed one (FIG. 1) or several (FIG. 2) annular

15 partitions 10, separating the sorting zone into separate chambers 11. Disturbing elements are fixed on the rotor 6, for example, in the form of hydrodynamic blades 12. On the sieve

20, on the outside of the drum 5, one (FIG. 1) or several (FIG. 2) annular grooves 13 are installed, and slotted holes 14 are made in the screen drum 5, which each ring 25 of the target groove 13c with sorting chambers 11-. In the outer cylindrical wall 7 of the rotor 6, holes 15 are formed, interconnecting the channels 8 with the chambers 11; sorting.

30 Ring gutters 13 are connected to the waste outlet 4 by means of channels 16.

Sorting works as follows.

The initial fiber suspension is fed through the pipe 2 into the interior of the housing 1, where it is distributed through the sorting chambers 11 through channels 8 formed by the inner 9 and 40 outer 7 walls. With a large sorting chambers 11 (Fig. 2), the suspension into these chambers from the channels 8 passes through the openings

45 15. The initial suspension j is thus supplied to the screening over the entire length of the rotor 6, evenly distributed over the entire working surface of the sieve drum 5.

5Q Due to the presence of annular partition walls 10 on the outer wall of the rotor 6, the sorting process is carried out separately on the adjacent sorting chambers 11,. formed by the LjHbK rotor walls 6 and the inner surface of the sieve drum 5, the conditioned fraction / suspension passes through the perforations of the sieve drum 5 and is withdrawn from

sorting through the nozzle 3, the waste sorting from each chamber 11 under the action of hydrodynamic blades 12 through the slit holes 14 in the sieve drum 5 is fed into the corresponding annular grooves 13, from which the tailings 4 are removed into the nozzle 4 and removed from the sorting.

Separate removal of costs from each sorting chamber contributes to the fact that the initial suspension supplied for sorting to each subsequent sorting chamber is not mixed with the waste of the previous chamber. This provides a significant increase in the sorting efficiency. ,

Claims (1)

SORTING FOR FIBER SUSPENSION, comprising a housing with nozzles for supplying a fibrous suspension and discharge of sorted suspension and waste, installed in the housing and forming a screening screen and a rotor with an outer wall and channels for supplying a fibrous suspension, characterized in that, for the purpose of to increase the efficiency of sorting, the rotor has an inner cylindrical wall and at least one annular partition mounted on its outer surface, dividing the sorting zone They are formed on the individual chambers, channels for supplying the fiber suspension formed by the outer inner walls of the rotor, and the sieve drum has at least one annular chute fixed to it, connected to the waste branch pipe and its corresponding sorting chamber by means of a slit hole made in the sieve drum. 1 1101487