Screen surface distributing device of vibrating screen

Abstract

The invention discloses a screen surface distributing device of a vibrating screen. The distributing device comprises a self-vibrating guiding plate and a material allocator, wherein the guiding plate is distributed along a chute and comprises a vertical section and an inclined section, the upper end of the vertical section is fixed, the lower end of the vertical section is connected with the upper end of the inclined section, the back surface of the guiding plate is provided with a plurality of self-vibrating springs which are connected with the chute, the material allocator comprises a vertical separation plate which is arranged on the vertical section and a plurality of pairs of splayed separation plates which are arranged on the inclined section. Through the function of the self-vibrating guiding plate and the material allocator, the material accumulation inside the chute can be reduced, the adequate and uniform distribution of the material after entering the guiding plate can be guaranteed, and the uniform distribution of the material on the screen surface of the vibrating screen can be realized.

Description

technical field [0001] The invention relates to a vibrating screen, more specifically, to a vibrating screen screen surface distributing device. Background technique [0002] The vibrating screen is a continuous screening mechanical equipment in the system, which is mainly used to deal with the particle size separation of materials. At present, it has become a common screening equipment in industrial and agricultural production, especially widely used in metallurgy, mining, coal and so on. There are more than 20 vibrating screen equipment in the raw material ore crushing system of metallurgical enterprises, which are responsible for the processing of blast furnace concentrate ore. During the material screening process of the vibrating screen, due to the uneven distribution of the material by the belt conveyor chute of the system, the quality of the finished product of ore crushing and screening is affected. The impact of ore powder content on blast furnace smelting, in the...

AI Technical Summary

Problems solved by technology

When the material enters the chute through the head of the belt conveyor, 50% of the effective area of ​​the material on the belt conveyor enters the 1200mm chute guide groove, and the material area on the belt conveyor is 50%, so that the material passing through the lining plate of the chute body cannot be distributed normally. Even if the distribution is normal, the discharge of the material guide trough is 1200mm, and the size of the screen surface of the vibrating screen is 2140mm, which cannot meet the effective area of ​​the screen surface of the vibrating screen.

[0006] 2. Uneven material distribution on the screen surface of the vibrating screen causes blockage of the mesh in the middle of the screen

[0007] Because the width of the outlet of the chute and the screen surface of the vibrating screen is inconsistent, the effective area of ​​the material entering the screen surface of the vibrating screen forms a trapezoid, and the effective area of ​​the screen surface of the vibrating screen cannot be fully utilized. Thick material layer in the middle of upper distribution and thin material layer on both sides will cause the mesh of the vibrating screen to be clogged, frequent cleaning of accumulated material on the screen, and reduced screening effect

[0008] 3. The screen surface of the vibrating screen is thicker in the middle material layer and thinner on both sides. The worn materials in the middle screen are concentrated on the middle screen of the vibrating screen. The friction force of the material on the screen increases, and the wear in the middle of the screen is obviously accelerated. The net is replaced frequently, the screening effect of materials is low, and the material of the crushing and screening system has a high powder content in the finished product after secondary screening, which cannot meet the technical standards for the quality of the finished product (the technical standard for the quality of the finished product: -5mm content less than 4%)

[0009] 4. The screening effect of the vibrating screen decreases, the production cost increases, and the energy loss

[0010] Due to the low screening effective area of ​​the vibrating screen, in order to improve the quality of the ore screening concentrate to meet the technical standards, the materials must pass through three stages of screening to meet the technical standards for the quality of finished materials. The materials are repeatedly screened, and the production and processing process is controlled and adjusted. Increased difficulty and increased energy consumption. In order to meet the technical standards for the quality of concentrated ore, the ore crushing and screening system must go through a three-stage screening process.

[0011] Due to the above problems in ore crushing and screening operations, the bottleneck of ore crushing and screening has been formed for a long time. The loss of spare parts and the increase in power consumption per ton of ore are not conducive to cost reduction and efficiency increase. Solve design defects, improve ore crushing and screening effects, Reducing power consumption per ton of mine is a difficult problem to be solved in the present invention

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