RU2807340C1 - Centrifugal grinder - Google Patents

Abstract

FIELD: agricultural engineering.

SUBSTANCE: invention relates to the machines for grinding fodder grain and other bulk materials used for feeding animals. The grinder contains a housing, inside of which there is a rectangular-shaped processing zone and a bevel gearbox, while a hob cutter is installed on the central shaft inside the processing zone, and the side shafts of the gearbox are connected through gears to the side shafts of the processing zone, on the free ends of which end mills are mounted, and the central shaft is connected to the electric motor through a safety clutch.

EFFECT: grinder provides an increase in the efficiency of the workflow.

1 cl, 2 dwg

Description

The invention relates to agricultural engineering, in particular to machines for grinding feed grain and other bulk materials used for feeding animals.

A shredder is known (patent No. 2137547, B02C 7/02) consisting of two coaxially located disks rotating towards each other. On the inner surfaces of the disks, annular 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, the shape of which copies the annular grooves of the disks and protrudes above their surface.

A centrifugal mill is known for grinding grain and bulk materials, containing two coaxially located and rotating towards each other disks with alternating concentric truncated cones, on which grinding corrugated blades are installed (see USSR author's certificate No. 552997, B02S 7/02, 1977).

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 large particles passing between the disks cannot be ruled out.

The closest is a centrifugal mill for grinding grain and bulk materials (patent No. 2627536), containing coaxially located disks mounted on the same shaft with the ability to rotate in different directions. Angular conical cutters are mounted on the inner surface of the disks on fixed axes with the possibility of rotation. The cutters are mounted with the possibility of the right disk entering the cavity formed by the cutters of the left disk.

The technical result is increased grinding efficiency.

The technical result is achieved by the fact that inside the device body there is a rectangular-shaped processing zone and a bevel gearbox, while a worm cutter is installed on the central shaft of the gearbox inside the processing zone, and the side shafts of the gearbox are connected through gears to the side shafts of the processing zone, on the free ends of which are mounted face mills, while the central shaft is connected to the electric motor through a safety clutch.

In fig. 1 shows a top view (section); in fig. 2 - side view.

The present invention consists of a housing 1 inside which is made of a rectangular-shaped processing zone 2 and a bevel gear 3, on the central shaft 4 of which a hob cutter 5 is installed inside this zone, and the side shafts 6 of the gearbox are connected through gears 7 to the side shafts 8 of the processing zone, on the free ends of which are mounted with end mills 9, while the central shaft 4 is connected to the electric motor 11 through a safety clutch 10.

The chopper works as follows. After turning on the electric motor 11, the rotation is transmitted to the central shaft 4, on which the hob cutter 5 is rigidly mounted, which performs a rotational movement, and through the side shafts 6 of the gearbox, the rotation is transmitted to the gear train 7 to the shafts 8 of the processing zone and the end mills 9.

As a result, the cutters rotate in opposite directions.

The crushed material is fed into hopper 12, from where it is sent to the processing zone of the chopper and fed to cutters 5.9. In this case, the particles fall under the action of the opposing working edges of the cutters and are crushed. Then, under the influence of their own weight, the particles fall out of the shredder.

The result is increased grinding efficiency.

Claims (1)

A centrifugal grinder containing a housing, cutters, characterized in that a rectangular-shaped processing zone and a bevel gearbox are made inside the housing, while a worm cutter is installed on the central shaft of the gearbox inside the processing zone, and the side shafts of the gearbox are connected through gears to the side shafts of the processing zone, on the free ends of which end mills are mounted, while the central shaft is connected to the electric motor through a safety clutch.