RU10118U1 - GRAIN GRINDER CRUSHER FOR Agglomerate - Google Patents

Description

SINGLE GRID CROWD GRAIN for Agglomerate

The proposed utility model relates to the design of the grate of the grate of the single-roll crusher used on sintering machines for crushing hot sinter.

The whole grate of the grate of the single-roll crusher for crushing hot agglomerate, made of steel grade 70XL, is known (see, for example, Agglomeration, pelletizing and blast furnace equipment directory, M, 1970, p. 49).

The disadvantage of this design is its long service life, in addition, the grates have uneven wear along the length. During the repair, the entire grate is replaced, although part of the grate has slight wear.

There are known designs of grid-irons that are made of heat-resistant steels 80G14X16G, 35KHML, 70X / 1, etc. with surfacing of working surfaces with abrasion-resistant heat-resistant alloys (see D.P. Pritykin, Mechanical equipment for preparing charge materials, Metallurgy, 1988, p. 215) .

The disadvantage of this design is the high cost of manufacture.

A grate of a single-roll crusher is also known, including a base and wear-resistant lining made of separate linings, fixed on the base with fasteners installed in the holes of the base and side walls | of exteriors (see, for example, the prospectus of the Swedish company J /// (/)).

The holes in the side walls of the lining are stepped, and the fasteners rely on their end surfaces for

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stepped surface of the holes.

The disadvantage of this known design is that the tightening force of the fasteners is transmitted to the side walls of the linings, loading them with additional bending stresses, which are especially dangerous, since the linings are cast from alloys with high hardness and wear resistance, but low bending resistance. In addition, the stepping of step holes is a low-tech and labor-intensive operation.

The purpose of the proposal is to increase durability and improve maintainability of grates at a relatively low cost but manufacture.

This goal is achieved in that the holes for fasteners in the side walls of the linings are smooth, and the fasteners are supported on the base.

Figure 1 shows the main view of the grate, figure 2 is a transverse section through the grate oct} location of the fasteners.

The grate consists of a solid base of the grate I, in the upper part of which there is a protrusion 2, on which several separate linings 3 are mounted, each having two vertical walls 4. The walls 4 have through smooth cylindrical holes 5 located coaxially with the hole b made in the base of the grate I. Fasteners are installed in these holes: a bolt 7, a nut 8, and two washers 9 of increased dimensions (such as foundation ones). The washers 9 are placed under the nut 8 and the head of the bolt 7. To stop the bolt from self-loosening, the hole in the nut 8 is fused with an electric weld 10 to a depth of about 5 mm 10. The washers 9 are supported on the walls of the base I.

The application of the proposed grate design can significantly improve the operational qualities of the crusher. 9 washers have

increased dimensions in outer diameter and thickness and therefore more reliably protect the lateral surface of the protrusions 2 during the fire cutting of fasteners used when replacing worn out / lost 3. In addition, using 9 improves the reliability of fastening the lining 3 by increasing the contact area with the surface of the holes 5.

Claims (2)

1. The grate of a single-roll crusher for oglomerate, including a base and wear-resistant lining, made of separate linings, fixed on the base with fasteners installed in the holes of the base and side walls of the linings, characterized in that the holes in the side walls of the linings are smooth and the fasteners are supported on the base. 2. The grate according to claim 1, characterized in that the fasteners are supported on the base through washers.