SU1627247A1 - Jig sieve - Google Patents

Description

one

(21) 4447076/03 (22) 06/22/88 (46) 02.15.91. Bul №6

(71) Kuznetsk Research and Design Institute for Coal Enrichment

(72) N.P. Black

(53) 622.762.2 (088.8)

(56) USSR Author's Certificate No. 1554968. class. B 03 B 5/24, 1988.

(54) BOWL CUTTER

(57) The invention relates to the enrichment of materials. used in the ore and coal industry. The goal is to increase the efficiency of enrichment. Jigging sieve contains two boxes (K) 1 and 2 with

sides (B) 3 and perforated bottoms. The bottom K 2 is made of rods (C) 5. The density of material C 5 is less than the density of the heavy fraction and more than the density of the light fraction of the enriched material. In B. 3, holes 6.7 are round and alkaline in shape. Slots 7 are inclined towards the unloading of the material. Holes 6 and 7 alternate. The ends of C 5 are freely inserted into the holes 6 and 7. During the recovery cycle, the jigging C 5 moves in the holes 7. This changes the living section of the bottom, and C 5 plays the role of an artificial bed. This causes the selectivity of the separation, i.e. the bed has a selective ability to pass the heavy fractions and hold the lungs. 4 il.

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This invention relates to the enrichment of materials and can be used in the ore and coal industries.

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

FIG. 1 shows the jigging sieve diagram and the location of the rods during the downward running of the jigging cycle; in fig. 2 shows the jigging sieve diagram and the location of the rods during the upward course of the jigging cycle; in fig. 3 shows the node I in FIG. 1: in FIG. 4 — node II in FIG. 2

Jigging sieve includes two boxes 1 and 2, pivotally interconnected. The box consists of sides 3 and perforated bottoms 4. The bottom of one of the boxes is made of rods 5 with a density, a lower density of the heavy fraction and a higher density of the light fraction of the enriched material. In the sides 3, holes 6 and 7 are made. The holes 6 are round, the holes 7 are slit-like. The slots are inclined towards the unloading of the material. Holes 6 and 7 alternate.

The ends of the rods 5 are freely inserted into the holes 6 and 7.

Jigging sieve installed in the machine body, works as follows.

The source material is fed into the box 1 of the rolling sieve. When boxes 1 and 2 move in a vertical plane created by an eccentric-lever mechanism of a jigging machine, the source material is divided into a layer of dense grains under the action of the ascending-descending water flows. A heavy bottom layer of large rock moves under the influence of the angle of inclination of the perforated bottom of the box 1 towards the upper material flow and is unloaded by a mechanical device. The remaining material layers move in the direction of the angle of inclination of the bottom of the duct 2. A thin layer of small rock is discharged through the increasing gaps between the rods 5 during the downward course of the jigging cycle. The density of the material of the rods according to the results of experimental studies and practice of jigging robots

machines with an artificial bed accept a lower density of the heavy fraction and a higher density of the light fraction, in the range of 2500-2600 kg / m3. Move

the rods under the action of the upward-descending flow of water occurs in the slit-like holes 7, which are angled in the direction of discharge. The amount of movement of the rods may vary over time.

by changing the hydrodynamic mode of the pulsating medium (amplitude, frequency). The distance between adjacent rods can vary from to 2P, while changing the living cross section of the sieve.

An increase in the live cross section allows an increase in the throughput capacity of a part of the jigging sieve. The role of an artificial bed is performed by metal rods, the density of the material of which is different.

the shape of the holes in which they are inserted, ensure their movement under the influence of the ascending-descending water jets. The 5th determines the separation selectivity, i.e. bed has a ballot

ability to pass heavy fractions and hold lungs. At the same time, operating costs are also eliminated and the maintenance of the machine is facilitated, since there is no need to acquire materials, prepare and monitor the artificial bed.

Claims (1)

Invention Formula A jigging sieve, including two boxes with sides and perforated bottoms pivotally connected, is characterized in that, in order to increase the efficiency of enrichment, holes and round and slit-like shapes are made in the sides of the box, alternating with each other, and the slots have a slope in the direction of unloading material, with this bottom of one of the boxes is made of rods of material with a density, a lower density of the heavy fraction and a higher density of the light fraction of the enriched material, and the ends of the rods are freely inserted into the openings of the beads. F V a g 7 7 i / fie.Z R Fig 1 five FIG 4