CN211303398U - A grooved grading board - Google Patents

Abstract

The utility model discloses a trench classification board, including the support, the classification board of slope setting on the support, its characterized in that classification board upper surface equipartition has the sand grip that the slope set up, makes hierarchical face along the slot that forms the slope, the cross section of sand grip is right angled triangle, right angled triangle's right-angle side sets up in the one side that meets the ore pulp. The utility model has the advantages that: small-particle-size materials meeting the requirement of the particle size in the ore pulp are screened out along the formed inclined grooves by the inclined raised lines uniformly distributed on the grading plate; the large-particle-size materials which do not meet the requirement of the size fraction move across the grooves of the sieve plate under the impact of the ore pulp to form oversize ores, so that the effect of screening and grading minerals is achieved, the screening efficiency of the grading plate is improved, the service life of the grading plate is prolonged, and the production cost is reduced.

Description

A grooved grading board

technical field

The utility model relates to the technical field of screening equipment, in particular to a groove grading plate.

Background technique

Spiral classifier is one of the equipment for beneficiation. The spiral classifier is a kind of equipment for mechanical classification based on the principle that the specific gravity of solid particles is different, so the speed of precipitation in the liquid is different. It can filter the material powder ground in the mill, and then rotate the coarse material into the feed port of the mill by using the spiral vane, and discharge the filtered fine material from the overflow pipe. The existing spiral classifier usually adopts a single-screw shaft structure, but the existing spiral classifier has strong vibration, high noise, low classification efficiency and incomplete discharge during operation.

When the linear sieve is used for wet classification of materials with small particle size, the large particle material in the pulp will sink in the lower layer, and the small particle size will float in the upper layer of the pulp. When the pulp is wet classified, the small particle size material needs to pass through the lower large particle size material layer to pass through the screen together with the water, which will increase the difficulty of screening and reduce the efficiency of screening.

High-frequency vibrating fine screen is a kind of fine grading equipment. According to the requirements of qualified particle size, a screen with suitable mesh size can be selected, and the pulp can pass through the high-frequency vibrating screen to achieve the purpose of grading. However, the commonly used high-frequency vibrating fine screen classification equipment usually sends the pulp directly to the screen through the pipeline. The flow rate of the pulp is usually fast, resulting in excessive concentration of the pulp in some areas of the screen, while the other areas of the screen are the pulp. Too little or almost no pulp will greatly affect the screening capacity of the screen. In addition, the screen has poor wear resistance and short service life.

Invention content:

The purpose of the utility model is to provide a groove grading plate in order to overcome the deficiencies of the prior art.

The utility model is realized through the following technical solutions:

The utility model relates to a groove grading plate, which comprises a bracket and a grading plate arranged obliquely on the bracket. In the inclined groove, the cross section of the protruding strip is a right-angled triangle, and the right-angled side of the right-angled triangle is arranged on the side facing the pulp.

The angle between the hypotenuse of the right-angled triangle of the cross section of the protruding strip and the grading plate is 60 degrees.

The advantages of the present utility model are:

Through the evenly distributed inclined ridges on the grading plate, the small-sized materials in the pulp that meet the requirements of particle size are screened out along the formed inclined grooves; the large-particle materials that do not meet the requirements of particle size are screened along the pulp. Under the impact of the pulp, it moves across the grooves of the grading plate to form ore on the screen, which achieves the effect of classifying minerals, improves the screening efficiency of the grading plate, and also increases the service life of the grading plate and reduces the production cost.

Description of drawings:

Figure 1: The front view of the structure of the utility model in operation.

Figure 2: Schematic diagram of the grooved grading board.

Detailed ways

The specific embodiments of the present utility model are further described below in conjunction with the accompanying drawings:

As shown in FIGS. 1 to 2 , a groove grading plate of the present invention includes a bracket 1 and a grading plate 2 obliquely arranged on the bracket 1 . The inclined ridges 3 make the grading plate surface along the inclined grooves 4, the cross-section of the ridges 3 is a right triangle, and the right angle side of the right triangle is arranged on the side facing the pulp. The angle between the hypotenuse of the right triangle and the grading plate 2 is 60 degrees.

work process:

As shown in Figure 1 to Figure 2: when the pulp is fed from the upper part of the groove classification plate, the large particle material 5 can break through the resistance of the groove 4 under the action of gravity, and under the action of the pulp, along the classification plate 2. Move downward and drop from the grading plate into the collection box of large-particle materials. Small-particle materials 6 fall into the groove 4 and cannot break through the resistance of the groove 4. Under the action of water flow and gravity, along the groove 4 It moves in the inclined direction, flows out under the side of the groove 4, and falls into the small particle material collection box from the lower part of the classification plate, thereby completing the classification process of minerals.

Claims (2)

1. a groove grading plate, comprising a bracket, a grading plate arranged obliquely on the bracket, it is characterized in that, on the surface of the grading plate, there are evenly arranged convex strips that are arranged obliquely, so that the grading plate surface is formed along the inclined surface. In the groove, the cross section of the protruding strip is a right-angled triangle, and the right-angled side of the right-angled triangle is arranged on the side facing the ore pulp. 2 . The grooved grading plate according to claim 1 , wherein the angle between the hypotenuse of the right-angled triangle of the cross-section of the protruding strip and the grading plate is 60 degrees. 3 .

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