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Vertical roll grinding mill

A vertical roller and mill technology, applied in the field of vertical rollers, to achieve the effects of reducing waste consumption, reducing surface area, and reducing contact area

Active Publication Date: 2015-12-16
ING SHOJI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0031] The object of the present invention is to provide a vertical roll that can solve both the circumferential and axial problems of the crushing surface of the crushing roll, has high performance that can maintain excellent crushing ability for a long time, and is excellent in economical efficiency.

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0067] [experimental device]

[0068] In order to investigate the effectiveness of the present invention, a vertical roller mill, which is a small experimental pulverizer similar to a LOESCHE mill with trapezoidal rollers, was fabricated. like Figure 6 As shown, this pulverizer has a structure in which pulverizing rollers 2 face each other on the outer peripheral surface of a horizontal rotary table 1 as a base member. The crushing roller 2 is a truncated cone-shaped vertical roller with the large-diameter side facing the outer peripheral side and the small-diameter side facing the center side, and is inclined so as to be horizontal to the opposing surface of the rotary table 1 . Since it is a test machine, the number of objects of the roll was set to one.

[0069] A plurality of spiral grooves 7 are provided on the outer peripheral surface of the crushing roller 2 . The plurality of spiral grooves 7 discharge the ground material from the center of rotation toward the oute...

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Abstract

The invention provides a vertical roll grinding mill. When the vertical roll grinding mill is used for smashing raw materials, efficient micro smashing can be conducted on all types of raw materials, and the service life of a roller can be prolonged. In order to achieve the task, on the aspect of a smashing roller (10) used for the vertical roll grinding mill, an outside-roller circumferential face (12) serving as a smashing face is divided into a main smashing face (12A) mainly conducting micro smashing, and a crushing face outside the main smashing face (12A). The main smashing face (12) forms a smooth face. The crushing face outside the main smashing face (12A) serves as a raw material transferring face (12B). The raw material transferring face (12B) forms a slit groove which forms a right angle relative to the circumferential direction of the roller or inclines by more than 45 degrees, or forms a spiral groove (11A) which inclines relative to the circumferential direction of the roller by less than 45 degrees.

Description

[0001] The patent application for this invention is a divisional application for the invention patent application with the date of entering the Chinese national phase on January 23, 2013, the Chinese patent application number is 201080068213.8, and the invention name is "vertical roll". technical field [0002] The present invention relates to a vertical roller used in a vertical roller mill, and relates to a universal roller suitable for the fine grinding of coal or petroleum coke, and the crushing of raw materials such as limestone whose crushed fine powder is easy to adhere to the surface of the roller. vertical rolls. Background technique [0003] As far as boilers for power generation are concerned, boilers fueled by coal and petroleum coke are still widely used. The reasons for this are low fuel costs and easy regulation of power generation. Needless to say, in developing countries such as China, even in Japan, a considerable part of power generation depends on coal an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C15/04B02C4/30
Inventor 河津肇
Owner ING SHOJI
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