RU2700622C1 - Grinder - Google Patents

Abstract

FIELD: food industry; fodder industry.

SUBSTANCE: grinder relates to loose material processing devices and can be used in food industry or fodder production. Proposed grinder consists of stator casing and drive rotor, receiving, grinding and unloading chambers, loading hopper connected to receiving chamber, destructive element secured on stator and corrugated rotor arranged in its cavity, wherein the destructive element consists of two parts – a base fixed on the stator, and a replaceable working part made of a more durable material fixed in the base with a profile joint. Working part can be composed of two or more elements.

EFFECT: disclosed is a grinder.

1 cl, 4 dwg

Description

FIELD OF THE INVENTION

The chopper refers to devices for grinding bulk product and can be used in the food industry or in feed production.

State of the art

Known design of the grinder, consisting of a housing-stator placed in its cavity of the drive rotor, crushing and discharge chambers and connected to the stator of the feed hopper, moreover, the crushing chamber and rotor are made with the possibility of interaction during crushing with the original product (see patent RU No. 2252575 , B02C 13/06, published 05/20/2005). The disadvantages of the known grinder should include a metal-intensive housing, the rotor design does not allow you to adjust the position of the working elements, which limits versatility and increases the wear of its working surfaces.

The closest in technical essence to the present invention is a chopper, consisting of a stator housing and a drive rotor located in its cavity, a receiving, crushing, unloading chambers, as well as a loading hopper connected to the receiving chamber, a destructive element rigidly fixed to the stator and the rotor made corrugated with the possibility of grinding the starting product (see patent RU 2552958, B02C 4/10, B02C 4/28, published 10.06.2015).

A disadvantage of the known grinder is the increased wear of the destructive element mounted on the stator, which reduces the efficiency of its trouble-free operation.

Disclosure of invention

The shredder consists of a stator housing and a drive rotor located in its cavity, a receiving, crushing, unloading chambers, as well as a loading hopper connected to the receiving chamber, a destructive element mounted on the stator, and a rotor made corrugated, and the destructive element consists of two parts - the base, rigidly fixed to the stator, and a replaceable working part made of a more durable material, fixed to the base with a profile connection, for example, a dovetail connection.

The working part, fixed to the base by a profile connection, can be made integral of two or more elements.

The implementation of a replaceable working part from a more durable material, including additionally hardened, is easily adapted to various initial products, varying, if necessary, the working gap between the rotor and stator riffles. A shredder feature is that a destructive element is fixed on the stator, consisting of two parts - the base and a replaceable working part, fixed at the base with a detachable profile type connection, for example, a dovetail connection.

To facilitate, repair and replace the replaceable working part, access to it is organized through openings in the side covers of the grinder, closed in operation by clamping plugs.

The grinding process is as follows. Coming from the hopper into the cavity of the grinder, the bulk material fills the receiving chamber, enters the longitudinal grooves (grooves) of the rotor and is transported to the destructive element mounted on the stator, where their original shape changes (crushing, chipping, etc.). Then the material moves to the discharge chamber.

The technical result is to increase the wear resistance, reliability and increase the efficiency of the grinding process, by reducing the wear interacting with the original product replaceable destructive element mounted on the stator.

The achieved positive effect on reducing the wear of the working parts of the grinder can be justified as follows. In the working cavity of the grinder are a stationary destructive element mounted on a stator and a rotating rotor. The rotor has n corrugations on the surface, in each of which the initial product is placed, interacting with a stationary destructive element at one revolution. Thus, the wear of the rotor corrugations will be n times less than the wear of a stationary destructive element, also in one revolution. Therefore, the use of a destructive element made of more durable material allows to reduce its wear and thereby increase the turnaround time, and the use of a profile connection of the base with a replaceable working part reduces the time for repair and maintenance of the grinder.

Brief Description of the Drawings

In FIG. 1 shows a general view of the chopper.

In FIG. 2 shows a cross section through a chopper.

In FIG. 3 shows a fragment of a stator with a destructive element.

In FIG. 4 shows a fragment of the side cover with access to the working part of the destructive element.

The implementation of the invention

The chopper 1 consists of a housing-stator 2 and a driving rotor 3, a receiving 4, a crushing 5, an unloading 6 chambers located in its cavity, as well as a loading hopper 7 connected to the receiving chamber, a destroying element 8, mounted on the stator and a corrugated surface 9 on the rotor 3 with the possibility of grinding the initial product, and the destructive element 8 on the stator 2 consists of two parts - the base 10, mounted on the stator 2, and the working part 11, made of a stronger material, fixed to the base 10 by a profile connection, for example Example, dovetail compound 12.

The working part 11 can be made integral of two 13 or more elements placed along the length of the rotor 3 for partial replacement, out of order or most worn out elements.

The replacement of the working part 11 of the destructive element 8 is made through holes 14 in the side covers 15 of the grinder 1, which are closed in the mode of operation of the grinder by pressure caps (not shown).

The work of the grinder and the movement of the initial product, (transportation, processing into crushed material and removal from the working cavity) are shown in the diagrams by arrows. Coming from the hopper 7 into the cavity of the grinder, the source material fills the receiving chamber 4, enters the longitudinal flutes (grooves) 9 of the rotor 3 and is transported to the destructive element 8, mounted on the stator 2, where it is ground. When the rotor 3 rotates, the initial product interacts with the corrugated surface of the rotor 9 and the destructive element 8. Then the material moves to the discharge chamber.

The present invention increases the productivity of the grinder, improves its maintainability and allows to differentiate the wear of its working surfaces.

Claims (2)

1. The grinder, consisting of a stator housing and a drive rotor located in its cavity, a receiving, crushing, unloading chambers, as well as a loading hopper connected to the receiving chamber, a destructive element fixed to the stator, and a rotor made corrugated, characterized in that the destructive element consists of two parts - the base, rigidly fixed to the stator, and a replaceable working part, made of more durable material, fixed at the base with a profile connection. 2. The grinder according to claim 1, characterized in that the working part, fixed to the base, is made up of two or more elements.

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