SU1423183A1 - Screen sieve - Google Patents

Abstract

The invention relates to the mining industry, in particular to the classification of bulk materials having an increased capacity. The purpose of the invention is to increase the classification efficiency by self-cleaning of the grate (K) in the screening process. Frame G is provided with support beams 2, in which rod K 3s are mounted for rotation and axial movement. The K 3 ends entering through the holes in beams 2 form an axial stroke between the stops 6, 7. On each of the K 3, the load 4 is fixed in the form of a rod located in one of the grooves formed by two guides 5. The latter are mounted under K 3 on the frame 1. The axis of the groove forms an indirect angle with the K 3 axes. During the screening process, K 3 is rotated through a certain angle. Due to the contacting of the weights 4 with the guides 5 K 3, they are axially displaced before impacting into the stops 6, 7. At the same time, K 3 perform complex oscillatory movements with shock shaking each at the end of the movement, which ensures the cleaning of the screening surface. 2 Il. "(L

Description

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The invention relates to the mining industry, in particular to the field of (i) the localization of bulk materials with increased adhesiveness.

: The purpose of the invention is to improve the efficiency of classification by self-cleaning of the cores in the screening process.

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

I The screen sieve includes frame 1 with support beams 2, screening surface of core grates 3, each of which is equipped with a load 4 in the form of st (fjn located in one of the grooves formed by two guides 5, and forming cores with longitudinal axes, cogs of a certain indirect angle. The ends of the rod grates 3 enter through the branches into the support beams 2, forming a short gap between the limiters 6 and 7 of the axial stroke. THE CURRENT START made to be removable. To increase the bearing capacity of the screening surface, the grate bars are supported by the supporting rib 8. To ensure 4 freer movement of the weights 4, they are fixed on the adjacent grate 3 in different grooves.

The sieve works as follows. In the process of screening with the help of weights 4, the grate 3 is rotated at a certain angle, and as a result of contacting these weights with the guides 5, they are displaced in the axial direction in one direction or the other relative to each other before hitting the stops 6 and 7 . During the operation of the screen, the grate bars 3 perform complex oscillatory movements with shock shaking each at the end of the axial movement, which ensures the cleaning of the screening surface, which is especially necessary when classifying materials

.; - with high adhesive ability.

Claims (1)

Claims screen comprising a frame, bar grates mounted in a frame rotatably, characterized in that, in order to increase the efficiency 20 classification by self-cleaning of the grate during screening, the grate is installed with the possibility of axial movement, and the sieve is equipped with limiters of axial movement of the grate, weights in the form of rods fixed on the grate, and mounted on the frame under the grate guides forming the groove in which the weights are located grate, and the axis of the groove forms an indirect angle with the wasps mm of the grate. 25 / J phy. /