SU1318293A1 - Hydraulic classifier - Google Patents

Abstract

The invention relates to the separation of polydisperse granular materials by hydraulic size and improves the quality of the classification: by weakening the floor separating the floor by centrifugal forces directed opposite to gravitational forces. The classifier includes a pipe (T) 1, which is made as part of a spiral, with walls. It consists of a chamber (K) 2 inputs, K 3; separation and K 4 discharges with a dividing plate 5. The convex outer wall 6 K 3 faces in the direction opposite to the action of gravitational forces, and is made with increasing radius of curvature (RK) and cross-sectional area. The ratio of the RK of the final section K 6 to the RK of the initial section K 6 is from 2 to 3. The angle formed by a normal drawn to the outer wall T 1 at the junction K 2 and K 3 and a normal held to the outer wall T 1 is Compounds K 3 and K 4 are from 90 to 120. The bottom of T 1 is V-shaped. The pulp enters through K 2 into K 3 tangentially to its upper wall. In K 2, all particles are pressed against the outer wall 6, and in the short circuit, as the RA increases, there is a consistent deposition of particles from the largest to the smaller ones. The fine particles are transported with a drain, which is cut off at the outlet of K 4 by plate 5. 1 Cp. f-ly, 4 ill. S j with eo with 00

Description

The invention relates to the field of separation of polydisperse granular materials by hydraulic size and can be used in the mining, construction, chemical and other industrial sectors.

The purpose of the invention is to improve the quality of the classification due to the weakening of the floor separator by the zeitoprotective forces directed opposite to the gravitational forces.

FIG. 1 shows the hydraulic classifier, general view; figure 2 - section aa on; fig. one; in fig. 3 — variation in the radius of curvature of the separation chamber; in fig. 4 shows the change in the resultant R, gravitational G and centrifugal F forces in the separation chamber.

. The hydraulic classifier holds pipeline 1, made as part of a spiral, which consists of chamber 2 inlets, chamber 3 section-NIN and discharge chamber 4 with a dividing plate 5. The outer wall 6 of the separation chamber 3 faces the opposite direction of the gravitational forces and is completed with increasing in the direction of the unloading chamber 4 a radius of curvature (g g g) and a cross section area. The ratio of the radius of curvature of the end section of the separation chamber 3 (radius conducted to the outer wall of the pipeline at the junction of separation chamber 3 with the discharge chamber 4) to the radius of curvature of the initial section of the trimming chamber 3 (radius conducted to the outer wall of the pipeline at the junction of chamber 2 The input with the 3 division camera is 2-3. Angle 0, formed by the normal N, conducted to the outer wall of the pipeline 1 at the junction of the inlet chamber 2 and the separation chamber 3, and by the normal N2 to the outer wall of the pipeline 1 at the junction of the separation chamber 3 and the discharge chamber 4 is 90-120 °

The bottom 7 of the pipeline 1 can be made V-shaped.

The hydraulic classifier works as follows.

The pulp enters through the chamber 2 of the introduction of the pipeline 1 into the chamber 3 of the separation tangentially to its upper wall. In the inlet chamber 2 (in the zone of the minimum radius of curvature) all particles are pressed by centrifugal force to the outer wall 6 of the separation chamber 3. In the latter, as the radius of curvature increases, successive sedimentation of particles from the largest to the smaller occurs. The settled particles are transported along a V-shaped bottom 7 to the unloading chamber 4. The V-shaped bottom shape reduces turbulent mixing in the sedimentation zone, facilitating the transport of large particles into the drain. The fine particles of the suspension are transported with a drain, which at the outlet of the unloading chamber 4 is cut off by a dividing plate 5, which prevents the suction of the upper layers of large particles with small particles.

Claims (2)

1.Hydraulic classifier, including a pipe made as a part of a spiral, with walls with an input chamber, a separation chamber and a discharge chamber with a dividing plate, characterized in that, in order to improve the quality of classification, the outer wall of the separation chamber faces the opposite direction of gravitational forces, and is made with an increasing radius of curvature and cross-sectional area, while the ratio of the radius of curvature of the final section of the separation chamber to the radius of curvature of the initial the section of the separation chamber is from 2 to 3, and the angle formed by the normal to the external wall of the pipeline at the junction of the inlet chamber and the separation chamber, and normal to the outer wall of the pipeline at the junction of the separation chamber and the discharge chamber, is 90. 2. The classifier according to claim I, о t is personal with the fact that the bottom the pipeline is made V-shaped. 2 Figz Fy