a fine crusher

Abstract

The invention relates to a fine crusher. The fine crusher comprises a driving variable frequency motor and a fine crusher main body. The fine crusher main body comprises a horizontal fine crusher cylindrical shell. A crusher screen integrated assembly is arranged in the fine crusher cylindrical shell and comprises a screen cage, a rotor body and a rotating shaft. The rotating shaft is connected to a driving motor. A fixing key is arranged between the rotor body and the rotating shaft. The rotor body is provided with multiple tool aprons and plate knives extending along a radial direction. The fine crusher has high fine crushing efficiency. The screen cage is used for filtering and screening materials with a certain particle size. The screened finished product has good uniformity. The fine crusher has high fine screening efficiency, is free of a material returning device and has a long service life.

Description

technical field [0001] The invention relates to the field of fine crushing processing for thermal power generation, coal deep processing, chemical industry, construction, etc., which have strict requirements on the particle size of materials, especially a fine fine crushing machine. Background technique [0002] The fine crushers used in industry can be mainly divided into three categories according to the working principle: hammer crusher, impact crusher and roller crusher. Strike, impact, shear, grind, and then achieve the purpose of fine crushing; the impact fine crusher uses the repeated impact of the material between the high-speed rotating blow bar and the fixed impact liner to finely crush the material; the roller fine crusher uses synchronous reaction The double rollers rotating inward make the material crushed by squeezing and rubbing. [0003] Although the above three types of fine crushers have been widely used in various industrial fields, they still have shortc...

AI Technical Summary

Problems solved by technology

[0003] Although the above three types of fine crushers have been widely used in various industrial fields, they still have shortcomings in terms of crushing efficiency, uniformity of material particle size, use and maintenance, and safety. The impact surface is limited, the fine crushing ability is weak, and the output particle size is uneven. Usually, it is necessary to equip the return equipment. The hammer head wear cycle is short, and it is inconvenient to replace and maintain; although the impact fine crushing machine has high crushing efficiency, the output particle size is not uniform. , and there is over-crushing phenomenon, which indirectly leads to increased power consumption of the fine crusher and reduced crushing efficiency; the fine crushing effect of the roller fine crusher is obvious, the return rate is low, but the equipment failure rate is high and the maintenance is more cumbersome

[0004] Moreover, the current existing fine crusher equipment has serious leakage of powder due to poor sealing, which not only results in a bad working environment in the plant, but also has equipment when crushing dangerous materials such as coal, semi-coke, calcium carbide, and asphalt aggregates. Hazard of Dust Explosions Inside and Inside the Plant

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