RU216222U1 - GRAIN CRUSHER WITH ON-LINE GRINDING DEGREE - Google Patents

Abstract

The utility model is intended for grinding bulk grain material and can be used in agriculture, namely in fodder production in order to improve the performance of a grain crusher and increase its utilization rate. The objective of the utility model is to increase the efficiency of changing the degree of grinding and monitoring the technical condition of the sieve. The technical result consists in regulating the degree of grinding by combining a certain section of the sieve with the required hole size with the unloading window of the working chamber of the grain crusher.

Description

The utility model is intended for grinding bulk grain material and can be used in agriculture, namely in fodder production in order to improve the performance of a grain crusher and increase its utilization rate.

A device for grinding grain [1] is known, containing a crushing chamber in the form of a truncated cone, on the small end side of which a sieve is curved outward, and on the opposite side there are radial louvered windows with an adjustable passage area.

The disadvantage of this technical solution is the low efficiency of changing the degree of grinding, since in this design its main regulation is carried out by replacing the current sieve with a sieve with a larger or smaller hole diameter.

Zootechnical requirements on the need to provide one or another fineness of grinding of grain raw materials for different species and age groups of farm animals cause the need for regular change of sieves when grinding feed in farms specializing in several branches of animal husbandry, which is associated with additional costs of resources, time and labor.

The objective of the utility model is to increase the efficiency of changing the degree of grinding and monitoring the technical condition of the sieve.

The technical result consists in regulating the degree of grinding by combining a certain section of the sieve with the required hole size with the unloading window of the working chamber of the grain crusher.

This technical result is achieved by the fact that in the well-known grain crusher, the small end side of the working chamber has an unloading window of rectangular cross section, which is coaxial with the guide frame. Slots and holes are made in the frame for installation and movement along the border of the unloading window of the working chamber of the sieve sheet, which contains three perforated sections with round holes of the required sizes.

The essence of the proposed utility model is illustrated by a diagram and a drawing. On (Fig. 1) shows a diagram of the grain crusher, on (Fig. 2) a general view of the grain crusher.

The grain crusher contains an electric motor (1), a loading hopper (2), an air damper (3), a flange plate (4), a housing (5), on the inner surface of which there are decks (6), a rotor with hammers (7), a guide frame ( 8), sieve cloth (9), pressure screws (10), clamping bar (11), corner clamping bar (12), unloading casing (13), hinges (14), tension latch (15).

The operation of the crusher is as follows: as a result of the rotation of the rotor with hammers inside the working chamber, a through movement of the air flow is ensured. The crushed particles are entrained in the air flow and are directed for unloading to the end unloading window. To remove from the working chamber a fraction of one or another size group, the corresponding section of the sieve cloth is combined with the perimeter of the window, depending on the required degree of grinding. To adjust the degree of grinding, it is necessary to disengage the tension latch and move the unloading casing mounted on hinged hinges to the side. Loosen the pressure screws that secure the sieve sheet by means of clamping bars. Move the sieve sheet forward or backward until the required area is aligned with the perimeter of the unloading window. Fixing the sieve and installing the unloading casing in place is carried out in the reverse order.

Sources of information

1. Patent RU 204448 U1, B02C 13/00 publ. 05/25/2021 Bull. No. 15.

Claims (1)

Grain crusher, containing a crushing chamber in the form of a truncated cone, an air damper, a flange plate, a rotor with hammers pivotally suspended on axles, a deck, characterized in that the small end side has a rectangular unloading window coaxial with the frame, in which guide grooves are made and holes for installation and movement along the border of the unloading window of the working chamber of the sieve cloth containing three perforated sections with round holes of the required dimensions.

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