First, the research background

Vibrating screen is a vibrating screening machine suitable for dry screening of wet fine-grained hard-to-screen materials. It is a vibrating screening machine for domestic processing of difficult-to-screen materials. It is mainly used for the classification of medium-sized materials and has stable operation. The utility model has the advantages of reliable work, simple structure, less wearing parts, convenient screen replacement, high screening efficiency and good screening effect.

In recent years, the coal quality of mines has deteriorated, mainly in the following aspects: First, the raw coal ash is unstable, the fluctuation is large, and the overall ash content rises, and the intermediate density content increases, which brings great difficulties to the coal preparation plant. Second, the final coal content in the raw coal gradually increased, resulting in the original part of the equipment can not adapt to the current coal quality, often failure, affecting production continues.

Second, the main content

The Xinqiao plant adopts the traditional jigging coal preparation method. Among them, after the jigging coal is dehydrated by the bucket elevator, the raft is fixed by the fixed raft on the inner wall of the chute, and the material is sieved into the 318 crusher. The end of the original or into the end. As the coal quality of the mine deteriorates, the coal content of the coal in the jigging increases, and the dewatering of the bucket lifter is difficult, resulting in the wetness of the coal. The classification effect of the original fixed graded scorpion is worse, often blocked, requiring frequent manual cleaning, and The processing capacity of 318 crusher is limited. A large amount of coal enters the 318 crusher, which increases the load of the crusher and affects the crushing effect of the crusher. In severe cases, it will block the crusher and affect the normal production.

After repeated argumentation, the Xinqiao Plant decided to use a vibrating screen to classify the coal to improve the classification efficiency. However, due to the limitation of the on-site space, it is impossible to install a large vibrating screen. The small vibrating screen cannot be purchased directly in the market, and it is required to be ordered by the manufacturer, which is expensive and has a long processing cycle. In this regard, the plant organized relevant technical personnel to independently develop and design the YD1014 small hanging vibration grading screen and put it into use.

Third, the main innovation points

1. YD1014 small hanging vibration grading screen is independently developed by the factory, with short processing cycle and low cost;

2, no need to make major changes to the site, and the classification effect is better, the maximum cost savings;

3. Reduce the frequency of on-site staff cleaning chutes and reduce the labor intensity of employees.

Fourth, the effect evaluation

After the hanging sieve is put into use, the classification effect is better. After the jigging, the fine coal material of the coal is directly sieved into the downstream system, which reduces the pressure of the coal crusher, avoids the jamming accident of the crusher, and ensures the coal system. The normal operation eliminates the safety hazards during the operation of the employees.

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