SU880467A1 - Roller mill - Google Patents

Description

(54) ROLLER MILL

one

This invention relates to grinding technology and can be used in the energy and other industries.

A roll mill is known, including a frame on which spring-loaded rolls are mounted (I.

The closest in technical terms to the proposed is a roll mill, containing a roller, whose working body is made in the form of a hollow perforated drum mounted on the shaft, and shock absorbers {2.

However, these mills cannot be used to grind coal and other media that have metallic inclusions, since if metal gets between the rollers, they get stuck.

The purpose of the invention is to increase the reliability of the device.

This goal is achieved by the fact that in a roller mill containing a roller, the working body of which is made in a vista mounted on a shaft of a hollow perforated drum, and shock absorbers, the latter are installed between the working medium and the roll shaft.

Shock absorbers can be installed along the roll radius.

FIG. 1 schematically shows a roller mill roll, longitudinal section; in fig. 2 is a section A-A in FIG. 1. - Valkova mill contains a roll I, the working body 2 of which is made in the form of a hollow perforated drum mounted on the shaft 3. shock absorbers 4, while the shock absorbers 4 are installed between the working body 2 and the shaft 3 of the roll 1, for example, inside the roll 1 through the ends, in addition, shock absorbers 4 are installed along the radius of the roll 1.

.Valkova mill works as follows.

Raw coal is fed under roll I, milled by working fluid 2, but with increased coal filling or metal inclusions, roll 2, I, absorbs on shock absorbers 4, does not jam, does not vibrate, and works reliably. Repair and replacement of shock absorbers is carried out at the re-assembly site, for which the roll is removed and rolled out of the mill, with the possibility of general replacement and general repair.

all roll parts, including shock absorbers ..

The proposed device ensures the reliability of the mill due to the fact that the working body of the roll absorbs in violation of the mode of supply of material under the roll. In addition, it provides maintainability (repair and replacement of shock absorbers) and does not require the creation of additional (detachable components, including shock absorbers, which take up additional volume of the mill, complicate its design and require long disassembly and assembly using tools and crane tools, because To replace the shock absorbers, the roll is removed and rolled out of the mill housing to the repair site, and instead a new roll is used with the shock absorbers already installed (due to the fact that izatory installed between the working body and the roll shaft and radially of the roll).

Claims (2)

1.Valkova mill, containing a roll, the working body of which is made in the form of a hollow perforated mounted on the shaft. A separate drum, and shock absorbers, are distinguished so that, in order to increase the reliability of the device, shock absorbers are installed between the working fluid and the roll shaft. 0 2. Mill according to claim 1, characterized in that the shock absorbers are installed along the radius of the roll. . Sources of information taken into consideration in the examination 1. USSR author's certificate number 556831, cl. B 02 C 4/08, 1976. 2. USSR author's certificate number 354886, cl. B 02 C 4/30, 1972.