New vertical mill grinding device

Abstract

The invention discloses a new vertical mill grinding device. The new vertical mill grinding device is characterized by comprising a discharging lifer (2), a vertical mill (3), a powder concentrator conveying machine (4), a multi-functional powder concentrator (5), a raw material conveying machine (6), a rotoclone collector (7) and a circulating fan (8); the top of the discharging lifer (2) is connected with the vertical mill (3) through the powder concentrator conveying machine (4); the raw material conveying machine (6) is connected with a material inlet (36) of the vertical mill (3); the upper middle part of the vertical mill (3) is provided with an air inlet (31) which is connected with an outlet for hot air from a kiln tail or a hot blast heater; an air outlet (30) on the top of the vertical mill (3) is connected with the rotoclone collector (7); and the top of the rotoclone collector (7) is connected with the circulating fan (8). According to the new vertical mill grinding device, the conditions of flowing chaos and instability of materials on a raw material bed and can be avoided, the materials are clarified roughly on the bed, the retention time of coarse materials is prolonged, and the grinding efficiency and yield are improved.

Description

technical field [0001] The invention belongs to a grinding device for building materials, metallurgy and other industries, in particular to a new vertical mill grinding device. Background technique [0002] As a more energy-saving grinding equipment, vertical mills are widely used in the cement industry and other industrial sectors. There are already a considerable number of upgrade replacement products for ball mills, and have achieved obvious energy-saving and emission-reduction effects. After long-term analysis and research on the vertical mill, its relatively reasonable working principle (material layer crushing) makes it have broad application prospects. However, we also found that the vertical mill still has great potential in application, and there is room for improvement in the structure, process, and equipment of the vertical mill. The currently used vertical mills mainly have the following problems: [0003] 1. Due to structural problems, the unloading of the be...

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Problems solved by technology

[0003] 1. Due to structural problems, the unloading of the bed is chaotic, the bed is unstable, and the unloading is short-circuited, resulting in excessive cycle load, which not only wastes the energy required for conveying materials, but also reduces the working efficiency of the vertical mill. It also reduces the output and increases the overall energy consumption.

[0004] 2. The working gas volume of the vertical mill is too large, and the required gas pressure is high, resulting in a lot of energy waste

[0005] 3. The equipment in the system is huge, which also increases the manufacturing cost

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