New vertical mill device

Abstract

The invention relates to a grinding device, in particular to a novel vertical mill device. A feeding hole separately formed in each of the top and the middle upper part of a vertical mill; materials, which enter an upper separator of the vertical mill, are fed in again by changing an original lower pneumatic carrying mode into an outer mechanical lifting mode of the vertical mill; a low-air-speed vane is arranged at the outer side of an abrasive disk; air speed and air pressure of the low-air-speed vane are very low, so that power of a fan is reduced; a separator is divided into an upper separator and a lower separator, and is arranged on the upper part of the abrasive disk; the upper separator and the lower separator are independently driven to feed materials and feed air separately up and down, so that powder-selecting grading precision is improved; a coarse grading device is arranged at the periphery of the abrasive disk; and a central dropping tube is designed into an adjustable structure, and can be adjusted up and down according to feeding grain size and feeding amount, so that stable dropping is realized and equipment material adaptation is wide, and various powder grinding systems can be adapted. The novel vertical mill device aims to save energy consumption and improve equipment production efficiency.

Description

technical field [0001] The invention relates to a grinding device for building materials, metallurgy and other industries, in particular to a novel vertical grinding device. Background technique [0002] As a conventional grinding equipment, vertical mill has been widely used in building materials, metallurgy and many other industries. Its relatively reasonable working principle makes it widely used, but there are still some problems in the current market: [0003] 1. The working form of the vertical mill is mostly the traditional internal circulation mode, that is, the material after grinding by the roller is brought to the separator at the upper part of the vertical mill through the high-speed gas entering from the lower part of the vertical mill for sorting, and the qualified fine powder is sorted. Selected and taken away, the coarse powder falls again, returns to the mill for grinding, and repeats itself. The gas pressure required by this type of vertical mill is very h...

AI Technical Summary

Problems solved by technology

The gas pressure required by this type of vertical mill is very high, and the efficiency of pneumatic material feeding is very low, resulting in a lot of energy waste, making the power consumption of the vertical mill very high

[0004] 2. At present, the separator (powder separator) of the traditional vertical mill is generally inefficient, and the gradation of the qualified fine powder selected is not good

[0005] 3. Due to problems in principle and structure, it is easy to cause material bed instability, discharge short circuit, low effective grinding efficiency, and high cycle load, resulting in high power consumption

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