Vertical mill roller limit device

Abstract

The invention especially relates to a grinding roll limiting device for a vertical mill, belonging to the technical field of vertical mills. The grinding roll limiting device is applied to the interior structure and starting program of the vertical mill. The grinding roll limiting device comprises a pressure framework (1), grinding rolls (3), a millstone (4) and a shell (5), and is characterized in that the grinding roll limiting device further comprises a limit block (2) and a supporting unit (6); the supporting unit (6) is connected with the shell (5) and located between two adjacent grinding rolls (3) and above the millstone (4); the limit block (2) is fixed on the front end of the supporting unit (6) and is in surface-contact motion connection with the grinding rolls (3); and a gap is formed between the supporting unit (6) and the outer rims of the limit block (2) and the millstone (4). According to a technical scheme in the invention, the grinding roll limiting device can substantially improve the work efficiency of the vertical mill, improves equipment stability and realizes light-load starting of the pressure framework type vertical mill.

Description

technical field [0001] The invention relates to the technical field of vertical mills, in particular to a vertical mill roller limiting device used in the internal structure of the vertical mill and the start-up procedure. Background technique [0002] At present, in the grinding systems of cement plants and steel plants, vertical mills, as a main grinding equipment, are widely used in grinding raw materials, cement, coal powder, slag and steel slag, etc. There are many pressurization forms of vertical mills, such as rocker arm form, pressure frame form and so on. Among them, most of the vertical mills that adopt the pressurized form of the pressure frame cannot achieve light-load startup when starting up, and before starting up, manual cloth is required in the mill. [0003] The main reason why the vertical mill with pressure frame cannot start with light load is that after the grinding roller is lifted with the pressure frame, it will deflect along the joint joint due to ...

AI Technical Summary

Problems solved by technology

Among them, most of the vertical mills that adopt the pressurized form of the pressure frame cannot start with light load when starting up, and before starting up, the mill needs to be artificially distributed.

[0003] The main reason why the pressure frame vertical mill cannot start with light load is that after the grinding roller is lifted up with the pressure frame, it will deflect along the joint joint due to its own weight, which will cause the grinding roller to deviate from the working roller table after falling off the roller.

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