RU2436633C2 - Device for grain grinding - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: device for grain grinding relates to devices for processing of fodder grain for mixed fodders. The device comprises a stand with a fixed loading hopper having a window for grain discharge, a sieve and a grinder in the form of a plate fixed on a shaft of a high-speed electric motor installed vertically and equipped with a sealing unit. The plane of rotation of a peripheral impact part of a plate passes under the window for grain discharge from the hopper. The shaft with at least one plate is located below the stand plane.

EFFECT: high reliability and efficiency of the device are provided.

4 cl, 1 dwg

Description

A device for grinding grain refers to apparatus for processing feed grain into animal feed and can be used as a means of mechanizing the process of grain crushing in individual and farm enterprises.

There are various types of mills and crushers for crushing grain and grain waste for animal feed: millstones, disk, hammer, rod, etc.

The device for processing grain according to the application No. 93040002, 1993, IPC V02V 3/02, Russia contains a number of abrasive disks, a housing, a power tray, a drive and a sieve.

The mill for grinding grain products contains a housing with a lid, a millstone, a loading mechanism in the form of a flexible screw (Russia, application No. 93021694/13 of 04/26/1993, IPC V02C 7/06).

The disadvantages of these technical solutions are the high power consumption and high weight of the devices.

A device is known, taken as a prototype, comprising a bed with a loading hopper fixed on it having a window for grain exit, a sieve and a grinder, in which the bed is made in the form of a plate with a window for grain exit, coinciding with a window for grain exit from the hopper, and an opening under the chopper shaft, which is made in the form of a vertically mounted and equipped with a sealing unit high-speed electric motor, and symmetrically mounted on its shaft, passed through the bed, plates, the plane of rotation of the peripheral impact the second part which extends under the window for grain yield, and the sieve is removable and mounted beneath the shredder (Russian Patent №2140325 C1 application №98108389 / 13 dated 30.04.1998 g).

The disadvantage of this technical solution is the low reliability of the device due to increased wear of the bearings of the motor due to the presence of one-sided radial forces on the shaft from the plate side due to misalignment of the grain feed window and the shaft axis.

The aim of the invention is to create a reliable design of a device for grinding grain in individual and farms.

This goal is achieved by the fact that in a device for grinding grain containing a frame with a loading hopper fixed on it, having a window for grain exit, a sieve and a grinder in the form of a plate mounted on a shaft of a vertically mounted and equipped with a sealing unit high-speed electric motor, while the rotation plane the peripheral impact part of the plate passes under the window for the exit of grain from the hopper according to this invention, the shaft with at least one plate is below the plane of the bed.

In addition, the axis of the shaft passes through the window for the exit of grain in the frame.

In addition, the sieve is made with longitudinal cells, which are elongated in the direction of rotation of the plate.

In addition, the number of plates is more than one and the plates rotate in parallel planes.

The invention is further illustrated by a specific embodiment with reference to the drawing, which shows a General view of the device for processing grain

A device for processing grain includes a bed 1, on which a loading hopper 2, a chopper 3, a sieve 4 and a reflector 5 are fixed.

The bed is made in the form of a plate with a window 6 closed by a shutter-gate 7.

The hopper includes a housing in the form of a drive 8 for loading grain with a window 9 for the exit of grain 10, and the window 9 of the hopper 2 coincides with the window 6 made in the frame 1. The drive 8 can be equipped with a handle-bracket 11.

The grinder 3 consists of a high-speed electric motor 12, on the shaft 13 of which the plate 14 is symmetrically fixed. The plane of rotation of the peripheral impact part of the plate 14 passes under the window 6 for the exit of grain. To increase productivity, the number of plates 14 is increased to two or more, and the plates 14 rotate in different planes. The electric motor 12 is located under the hopper 2 and is closed by the casing 15. The electric motor 12 is mounted so that the axis 17 of the shaft 13 passes through the window 6 for grain exit.

The sieve 4 is cylindrical in shape and covers the shaft 13 with the plates 14. The lateral part of the sieve 4 is made with oblong holes elongated in the direction of rotation of the plates 14. The sieve 4 and partially the casing 15 are covered by a reflector 5, which simultaneously functions as a chopper body on which the control panel is mounted 16 engine 12. In the lower part of the casing 15 and the reflector 5 can be mounted staples 18 to fix the drive products of processing in the form of a bag 19.

Before carrying out work on grinding grain, the device is suspended on a hook using the handle 11. From below, a drive for processed products 19 is installed.

A device for grinding grain as follows. The power cord is connected to the power network 20. The Start button of the control panel 16 turns on the electric motor 12, the shaft 13 of which untwists the plates 14 to high speed. From the drive 8, the grain with the open gate 7 enters the grinding zone formed by the sieve 4. In the collision with the plates 13, the grain is crushed into pieces and flies out through the elongated holes. After a collision with a reflector 5, crushed grain under the influence of its own weight falls down into the storage of processed products 19.

The positive effect of the invention is to reduce the radial load on the shaft and, accordingly, the bearings of the electric motor by placing the motor with the shaft and plate below the plate and the location of the rotating shaft with the plate opposite the window for the exit of grain. In this case, the grain entering the working chamber is distributed evenly in it and, accordingly, acts on both halves of the plate without creating unbalanced unilateral forces on the motor shaft.

The execution of longitudinal cells in a sieve and their orientation along the direction of rotation of the plate 14 can improve the quality of the processed products by significantly reducing the fine fraction, i.e. reduce flour production.

The increase in the number of plates to two or more, rotating in different parallel planes, allows to increase the efficiency of grain processing and thereby further improve the specific characteristics of the proposed device for grinding grain.

Claims (4)

1. A device for grinding grain, comprising a bed with a loading hopper fixed on it, having a window for grain exit, a sieve and a chopper in the form of a plate mounted on a shaft of a vertically mounted and equipped with a sealing unit for a high-speed electric motor, while the plane of rotation of the peripheral impact part of the plate passes under the window for the exit of grain from the hopper, characterized in that the shaft with at least one plate is below the plane of the bed. 2. The device for grinding grain according to claim 1, characterized in that the axis of the shaft passes through the window for the exit of grain. 3. The device for grinding grain according to claim 1, characterized in that the sieve is made with longitudinal cells elongated in the direction of rotation of the plate. 4. The device for grinding grain according to claim 1, characterized in that the plates rotate in parallel planes.

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