RU169549U1 - Device for chopping tubers - Google Patents

Abstract

The device provides for the simultaneous grinding and abrasion of tubers into a porridge in one device. The chopper consists of a casing, on the inner surface of which there are opposing knives and abrasive elements, a rotor eccentrically located in it, with radially mounted cutting knives in the form of a comb and segments with flutes between them, a loading and unloading neck. The counter-cutting knives, mounted in a spiral on the inside of the case, contribute to active mixing and intensive grinding of the material. Pre-grinding of the material provides the best loading space in the abrasion zone. Due to the eccentric location of the rotor and the reduction of the gap between the flutes of the rotor and the chopper body, the tubers undergo intensive abrasion under pressure. The air entering the material in the loading zone will contribute to better removal of the gruel through the discharge window.

Description

The utility model relates to starch production, in particular to devices for attrition of potatoes. It can be used in agriculture and other industries.

The device provides for the simultaneous grinding and abrasion of tubers into a porridge in one device. The chopper consists of a casing, on the inner surface of which there are opposing knives and abrasive elements, a rotor eccentrically located in it, with radially mounted cutting knives in the form of a comb and segments with flutes between them, a loading and unloading neck. The counter-cutting knives, mounted in a spiral on the inside of the case, contribute to active mixing and intensive grinding of the material. Pre-grinding of the material provides the best loading space in the abrasion zone. Due to the eccentric location of the rotor and the reduction of the gap between the flutes of the rotor and the chopper body, the tubers undergo intensive abrasion under pressure. The air entering the material in the loading zone will contribute to better removal of the gruel through the discharge window.

A device for chopping, mainly potatoes (RU 2554999. Publish. 07/10/2015. Bull. No. 19), containing a stationary body with zones for loading raw materials and unloading the finished product, between which is placed a rotor with inserted longitudinal cutting elements in the form of straight strips with teeth and on the wall of the casing the latch is fixed with the help of a device for forcing its adjustable displacement parallel to the axis of the rotor, as well as a drive. Moreover, the latch has the shape of a wedge and is strengthened by means of a forced controlled bias device in the direction between the loading and unloading zones to set the required acute angle of inclination in a plane perpendicular to the axis of the rotor. The latch has an abrasive surface on the rotor side in the adjacent zone with the possibility of installing a latch oscillation excitation device.

The disadvantages of the known device are the design complexity, low productivity due to the lack of preliminary grinding of raw materials, an increase in the time spent working on regulating the displacements of the latch depending on the properties of the processed feed.

The goal is to increase productivity, reduce energy consumption, improve the degree of abrasion of raw materials when combining the operations of preliminary grinding and the final abrasion of tubers into a gruel in one device.

The goal is achieved by the fact that the proposed device comprising a housing with loading and unloading necks, abrasive elements, characterized in that the rotor in the grinder housing is eccentric with radially mounted knives in the form of combs and segments with grooves between them, on the inner side of the housing there are abrasive elements and spiraling counter knives.

The device provides preliminary grinding of the material before abrasion. The abrasion of tubers occurs under pressure due to a decrease in the gap between the housing and the rotor, abrasive elements located both on the rotor and on the housing.

In FIG. 1 is a schematic illustration of a tuber chopper; in FIG. 2 shows a cross-sectional view of a grinder in the loading zone in section AA, in FIG. 3 cross section in zone BB; in FIG. 4 is a schematic diagram showing a comb; in FIG. 5 is a diagram of the location of the opposing knives.

The chopper consists of a housing 1, on the inner surface of which there are opposing knives 2 and abrasive elements 3, eccentrically located on the shaft 4 of the rotor 5, with radially mounted combs 6 and segments with corrugations 7 (Fig. 1) placed on the rotor between the combs, loading 8 with a slide gate 12 and a discharge neck 9. The combs 6 have stops on the edges 10 (Fig. 4) in contact with the support segments 15 of the housing 1, and cutting knives 11 are located between the supports. To reduce friction between the combs 6 and the body 1 of the contact zone, they have an antifriction coating 13. The combs 10 stops 6 (Fig. 4) have a length greater than the knives 11, which provides a gap between the cutting knives 11 and the abrasive elements 3 in the zone II of abrasion of tubers.

The comb is pressed against the inner surface of the housing due to the spring 14. The supporting segments 15 (Fig. 2) mounted on the housing 1 impede the exit of the comb 6 from the contact zone bounded by the inner surface of the housing in the area of the loading 8 and unloading 9 necks. For intensive grinding and mixing, the opposing knives 2 are mounted spirally on the inside of the casing (Fig. 5) and are directed by the cutting edge opposite to the rotation of the rotor 5. The cutting knives 11 (Fig. 2) are mounted on the comb 6 radially at the cutting angle of the processed tubers and directed by the cutting edge in the direction of rotation of the rotor. The abrasive elements 3 are installed on the inner surface of the housing 1. The segments with corrugations 7 are mounted on the rotor between the combs 6 and have the form of files with serrated corrugations.

A device for grinding tubers works as follows.

Starch-containing raw materials, for example, potatoes, enter the loading neck 8 of the housing 1 and, when entering into zone I, are preliminarily crushed by means of counter-cutting 2 and cutting 11 knives. The feed of the product for grinding is regulated by a slide gate 12. Preliminary grinding of the material provides a better loading of the space between the rotor and the body of the grinder in the abrasion zone II. Under the pressure of a rotating rotor 5 and combs 6 with cutting knives 11, the raw material enters the abrasion zone II. Due to the eccentric location of the rotor 5 and the reduction of the gap between it and the inner surface of the housing 1 (Fig. 1), the tubers under pressure are intensively worn under the influence of corrugations 7 and abrasive elements 3 and enter the discharge zone 9.

For ease of repair and maintenance of the device for grinding tubers, the side walls of the housing 16 are removable (Fig. 2).

The utility model allows to increase the productivity and efficiency of the device by combining the operations of pre-grinding and the final abrasion of tubers into a gruel in one device while reducing energy consumption.

Information sources

1. RF patent No. 2554999, cl. C08B 30/02, B02C 18/24, B02C 19/20, 2015.

Claims (1)

A grinding device comprising a stationary body with zones for loading raw materials and unloading the finished product, characterized in that on the inner surface of the body there are abrasive elements and counter-mounted knives mounted in a spiral, and a rotor with radially mounted cutting knives in the form of combs is eccentrically located segments with flutes between the combs.

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