RU2728355C1 - Centrifugal shredder - Google Patents

Abstract

FIELD: agriculture; machine building.SUBSTANCE: invention relates to agricultural machine building, in particular, to machines for grinding fodder grain and other loose materials used for animal feeding. Centrifugal shredder comprises cylindrical bed with power transmission arranged inside it, on central shaft of which at the top is rigidly installed a shaped cutter, consisting of housing with L-shaped located slots for L-shaped cutter inserts, on free ends of which are rigidly fixed hard-alloy cutting elements and side flange, which fixes cutter inserts in housing with the help of screws, wherein the frame has a L-shaped insert in grooves incisal L-shaped with opposite flange fastening burin inserts routing cutter tool, and a window in the casing under burin inserts in a vertical plane.EFFECT: high efficiency of grinding and obtaining a product of leveled grain size distribution; at that cutters without sharpening are increased due to change of cutting inserts cutting edges in grooves.1 cl, 4 dwg

Description

The invention relates to agricultural machinery, in particular to machines for grinding feed grains and other bulk materials used for animal feeding.

Known grinder (patent No. 2137547, В02С 7/02) consisting of two coaxially located and rotating towards each other discs. On the inner surfaces of the discs, circular grooves are made in the form of alternating protrusions and depressions of a triangular shape, and the angle at the tops of the protrusions is equal to the angle of the depressions. In addition, radial grooves are made on the inner surfaces of the disks, in which knives are installed, in the form of copying the circular grooves of the disks and protruding above their surface

Known centrifugal mill for grinding grain and bulk materials, containing two coaxially located and rotating towards each other discs with alternating concentric truncated cones, on which grinding corrugated blades are installed (see USSR author's certificate No. 552997, В02С 7/02, 1977).

The closest in technical essence is a centrifugal grinder (patent No. 2627536, В02С 7/02), containing coaxially located discs mounted on one shaft with the possibility of rotation in different directions. On the inner surface of the discs on fixed axes, angular conical cutters are mounted with the possibility of rotation. The cutters are mounted so that the right disk can enter into the cavity formed by the cutters of the left disk. Installing cutters on disks with the ability to rotate provides an increase in the efficiency of grinding and the duration of the cutters without sharpening.

In such a mill, the grinding of the product occurs mainly due to impact and friction against grooved blades and cones. Since the blades are of sufficient height, the possibility of passage of large particles between the discs is not excluded.

The technical result is an increase in the efficiency of grinding and obtaining a product with a uniform particle size distribution.

This is achieved by the fact that the device contains a cylindrical bed, with a power transmission placed inside it on the central shaft of which a shaped cutter is rigidly installed at the top, consisting of a body with L-shaped slots located for L-shaped tool inserts, at the free ends of which are rigidly fixed carbide cutting elements and a side flange that secures the cutting inserts in the body with screws, while in the bed there are L-shaped cutting inserts in the L-shaped grooves with a fastening flange opposite the cutting inserts of the shaped cutter, as well as a window located in the body under the cutting inserts in the vertical plane.

FIG. 1 shows a centrifugal grinder in a side sectional view; in fig. 2 - top view; in fig. 3 - view of the bed with grooves and cutting inserts; in fig. 4 is a view of the cutter body with slots and cutting inserts.

The proposed invention consists of a bed 1 of a cylindrical shape, with a power transmission 2 located inside it on the central shaft 3 of which a shaped cutter 4 is rigidly installed at the top, consisting of a housing 5 with L-shaped grooves 6 for cutting inserts 7 L-shaped, on free the ends of which are rigidly fixed carbide cutting elements 8 and a side flange 9, which secures the cutting inserts in the body 5 using screws 10, while in the frame 1 the L-shaped cutting inserts 11 are placed in the L-shaped grooves 12 with the fastening flange 13 opposite the cutting inserts 7 of the milling cutter 4, as well as the window 14 located in the frame 1 under the cutting inserts 7 and 11 in the vertical plane.

The shredder works as follows. After turning on the electric motor 6, the rotation is transmitted to the central shaft 4, on which a shaped cutter is rigidly installed at the top, performing a rotational movement.

As a result, the cutting insert 7 rotates towards the cutting insert 11 crushing the supplied material.

Then, under the influence of their own weight, the particles fall out of the grinder through the window 14.

As a result, the grinding efficiency increases, while the duration of the cutters operation without sharpening increases due to the change in the position of the cutting edges of the cutting inserts in the grooves

Claims (1)

A centrifugal grinder containing a housing, characterized in that the device contains a cylindrical bed with a power transmission located inside it, on the central shaft of which a shaped cutter is rigidly installed at the top, consisting of a housing with L-shaped slots located for L-shaped tool inserts, on the free ends of which are rigidly fixed with carbide cutting elements and a side flange that secures the cutting inserts in the body with screws, while the bed contains L-shaped cutting inserts in the L-shaped grooves with a fastening flange opposite the cutting inserts of the router, as well as a window, placed in the body under the cutting inserts in the vertical plane.

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