RU2127153C1 - Grain grinder - Google Patents

Abstract

FIELD: agricultural engineering. SUBSTANCE: grain grinder has horizontal and coaxial with alternating ring projections installed in housing. Radial slots in projections forming paired cutters are made in form of blind holes uniformly spaced over concentric circumference square to disk plane. EFFECT: simplified process of slot making in projections. 3 cl, 3 dwg

Description

 The invention relates to a device for grinding grain and can be used in agricultural, food and other industries. Known feed chopper a. with. 185618 / application N 933943 dated 12/21/64, in which two counter-rotating shafts with knives are used. The disadvantage of the dismembrator is that in this case, the gap between the housing and the side surface of the rotating disk is filled with grinding products, which requires the adoption of special measures to remove them.

 A device for grinding grain / copyright certificate N 1196025, application N 3752839 from 12.06.84 /, in which grooves are made in the annular protrusions in the radial direction, and the upper disk is mounted with the possibility of vertical movement by adjusting the gaskets.

 The disadvantage of a device for grinding grain is the difficulty of performing radial grooves, the need to develop special equipment.

 The device solves the problem of simplifying the process of performing radial grooves in the protrusions of the disks and performing them in the form of paired incisors. General features of the proposed device for grinding grain: body, horizontally and coaxially mounted disks with alternating annular protrusions, in which through grooves are formed in the radial direction.

 Distinctive / sufficient / signs are as follows: the radial grooves in the annular protrusions are made uniformly along concentric circles perpendicular to the plane of the horizontal disks and are blind holes.

 In a particular embodiment, the blind holes in the annular protrusions have a diameter equal to the diagonal of the groove base, and the movable disk is mounted to rotate in different directions.

 A device for grinding grain is shown schematically in the drawing, where in FIG. 1 is a general view; FIG. 2 - section AA with windows in the discharge hopper, FIG. 3 - the same section AA with holes in the annular protrusions.

 The device for grinding grain contains a loading hopper / 1 /, an unloading hopper / 2 /, plates / 3 /, a movable disk / 4 /, a fixed disk / 5 /, a receiving cavity / 6 /, a shaft / 7 /, a pulley / 8 /, windows / 9 /, screws / 10 /, frame / 11 /, paw / 12 /. The holes in the annular protrusions form on one side the incisors / a /, and on the other - the incisors / b /.

 The assembly of the device for grinding grain is as follows. On the frame / 11 / screws / 10 /, a shaft / 7 / is mounted with the movable / 4 / and fixed / 5 / disks assembled on it. Then on the frame / 11 / the body is fixed by means of the paws / 12 /; the case is composite, its upper part is a loading hopper installed by means of ribs - plates / 3 / onto a discharge hopper. The casing with the unloading hopper / 2 / is mounted with its inner surface on the corresponding outer surface of the fixed disk / 5 /. The discharge hopper / 2 / is made with the formation of a toroidal shape, while on the inner wall its upper part contains a groove that allows access for the exit of the crushed product between the disks, and on the opposite side this surface is made with a height that covers the exit of the crushed product.

 A device for grinding works as follows. A pulley / 8 / from a belt drive connected to the motor shaft rotates the upper disk / 4 /. The grain of the hopper / 1 / through the receiving cavity / 6 / enters the space between the disks / 4 / and / 5 /, is crushed when moving under the action of centrifugal forces by grinding elements and enters the hopper / 2 /, from where it enters the national team through the windows / 9 / capacity.

 The crushed product between the disks is carried out through the radial grooves, while the execution in the annular protrusions of the grooves by drilling blind holes perpendicular to the plane of the disks / 4 / and / 5 / allows you to get a pair of cutters / a / and / b /. When the movable disk is rotated, for example, clockwise, the grain is cut by the cutters / a /, and when rotated counterclockwise by the cutters / b /.

 The use of disk rotation in the forward and reverse direction when grinding grain allows you to extend the life of the device for grinding.

 The implementation of blind holes in the annular protrusions with a diameter equal to the diagonal of the base of the groove allows you to get sharp edges in the protrusions with an angle at which the grain is additionally cut.

 Blind holes in annular recesses are substantially simpler to perform than radial grooves / through holes in all recesses /, i.e. simplifies the technology of manufacturing discs.

Claims (3)

 1. Device for grinding grain, comprising a housing, horizontally and coaxially mounted disks with alternating annular protrusions, in which through grooves are formed in the radial direction, characterized in that the radial grooves in the annular protrusions are blind holes and are made uniformly along concentric circles perpendicular to the horizontal plane drives.  2. The device according to claim 1, characterized in that the blind holes in the annular protrusions are made with a diameter equal to the diagonal of the groove base.  3. The device according to claim 1 or 2, characterized in that the movable disk is mounted to rotate in different directions.

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