RU2795898C1 - Device for grinding grain - Google Patents

Abstract

FIELD: agricultural machinery.

SUBSTANCE: invention is designed for mechanized processing of grain crops for feed, and can be used in farms and individual farms. The device for grinding grain contains a frame with a loading hopper fixed on it, with a window for exit of grain, an accelerating plate placed on the drive shaft with corrugations made of a conical shape, radially bent with decreasing height, a sieve, a reflector, a drive for changing the position of the sieve, a guide tray with telescopic retractable pipe. In this case, the sieve has two working zones with different hole diameters. On the lower part of the accelerating plate there is a screen, which excludes crushed grain from entering the lower working area for coarse grinding.

EFFECT: invention makes it possible to change the degree of grinding without replacing the sieve.

1 cl, 3 dwg

Description

The invention relates to agricultural machinery and is intended for mechanized processing of grain crops for feed and can be used in farms and individual farms.

A device for processing grain is known, containing a number of abrasive disks, a housing, a grain feed tray, a drive and a sieve [1].

Also known is a device for grinding grain, containing a frame with a fixed grain receiving bin with an exit window, a sieve and a grinder [2].

The disadvantage of the known structures for grinding grain is the high power consumption and low specific productivity, characterized by the ratio of productivity to power consumption, as well as the large weight of the devices and high labor costs for manufacturing.

The next technical solution is a device for grinding grain, containing a frame with a loading hopper fixed to it, having a window for the exit of grain, an accelerating plate with corrugations placed on the drive shaft, a sieve and a reflector, a drive [3].

The disadvantage of this design is the low productivity caused by the fact that the material leaves the accelerating plate in a narrow jet, resulting in grinding works a small area of the reflective plate.

The prototype is a device for grinding grain, containing a frame with a hopper, a window for the exit of grain, a conical accelerating plate with corrugations placed on the drive shaft, a sieve, a reflector and a drive [4].

The disadvantage of the prototype is not the possibility of obtaining different grain grinding without replacing the sieves.

The objective of the invention is to eliminate these disadvantages.

The technical result is the expansion of the functionality of the device for grinding grain.

The specified technical result 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 the exit of grain, an accelerating plate placed on the drive shaft with corrugations made of a conical shape with radially curved with decreasing height, a sieve, a reflector and the drive, according to the invention, is equipped with a lever for changing the position of the sieve, a guide tray with a telescopic (retractable) tube, and the sieve is made with two working areas with different hole diameters, and a screen is located on the lower part of the accelerating plate.

The device for grinding grain is illustrated by diagrams:

fig. 1 - General view of the proposed device for grinding grain;

fig. 2 - top view of the device for grinding grain;

fig. 3 - view B in Fig. 1.

The device for grinding grain Fig. 1, fig. 2, contains a frame 1 with a loading hopper 2 fixed on it, having a window 3 for the grain exit, an accelerating plate 5 placed on the drive shaft 4 with corrugations 6 made of a conical shape with radially curved with decreasing height, a sieve 7, a reflector 8, a drive 9, 10 to change the position of the sieve 7, the guide tray 11 with a telescopic (retractable) tube 12, and the sieve 7 is made with two working areas with different hole diameters, and on the lower part of the accelerating plate 5 there is a screen 13, which prevents crushed grain from entering the lower working area coarse grinding Fig. 3.

Device for grinding grain works as follows.

After turning on the drive 9, the drive shaft 4 spins the accelerating plate 5 with corrugations 6 to a high speed. Grain is poured into the hopper 2, which is fed through the window 3 and the telescopic (retractable) pipe 12 by the guide tray 11 to the center of the accelerating plate 5, where, due to centrifugal force, the grain collides with the sieve 7 and breaks into pieces. The crushed product through the holes of the sieve 7, hitting the reflector 8, enters the unloading hopper.

The degree of grain grinding is regulated by means of the lever 10 by switching to the position “pos. II" and "pos. I". When grinding grain on the upper working area for fine grinding, the lever is set to the position “pos. II", and switching to the lower working area for coarse grinding is achieved by setting the lever to the position "pos. I". Screen 13 prevents grain from entering the lower grinding chamber.

When grinding grain in the lower working area for coarse grinding, the working area for fine grinding practically does not work, since the crushed grain with large particle sizes comes out through a sieve with a large hole diameter.

Thus, the device for grinding grain allows you to get a different grinding of grain without replacing the sieves.

List of used literature

1. Patent 93040002 Russian Federation IPC B02 B 3/02. Device for grain processing / Malakhov N.P.; applicant and patent holder Family private enterprise "Tekhnologiya". 93040002/13; dec. 08/06/1993; - Published. 10/27/1996. - analogue.

2. Patent 93045812/13 Russian Federation IPC B02S 9/04. Device for grinding and sifting grain / Batushkin V.A., Starshov G.I., Nikonorov S.N., Sadomtsev S.P.; applicant Enterprise "Grim". 93045812/13; dec. 09/27/1993; - Published. 06/10/1996. - analogue.

3. Patent 2140325 Russian Federation IPC B02S 9/04. Device for grinding grain / Maltsev P.V., Bersenev A.Yu., Luzgin A.F.; applicant and patentee Maltsev Pavel Viktorovich, Bersenev Andrey Yurievich, Luzgin Alexander Fedorovich. 98108389/13; dec. 04/30/1998; -publ. 10/27/1999 - analogue.

4. Patent 2534111 V02S 13/14. Device for grinding grain / Lobanov V.I., Buzoverov S.Yu., Zhukov M.V.; applicant and patent holder Lobanov Vladimir Ivanovich. 2013132330/13; dec. 07/11/2013; - Published. 11/27/2014 Bull. No. 33 - prototype.

Claims (1)

A device for grinding grain, comprising a frame with a loading hopper fixed on it, having a window for the grain exit, an accelerating plate placed on the drive shaft with corrugations made of a conical shape, radially bent with decreasing height, a sieve, a reflector and a drive, characterized in that a lever is installed for changing the position of the sieve, a guide tray with a telescopic retractable tube, moreover, the sieve is made with two working areas with different hole diameters, and a screen is located on the lower part of the accelerating plate.

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