SU1196025A1 - Apparatus for grinding grain - Google Patents

Description

The invention relates to a device for grinding grain and can be used in the agricultural, food and other industries.

The purpose of the invention is to improve the quality of grinding, as well as improving maintainability.

FIG. 1 shows a device for grinding grain, a general view; in fig. 2 - section A — A in FIG. one.

A device for grinding grain consists of a fixed body 1 with a loading 2 and output 3 branch pipes. Inside the case there are two disks 4 and 5 horizontally and coaxially mounted.

On the working surfaces 6 of the disks 4 and 5 are annular protrusions 7. The lower disk 5 is fixed on the flange 8 of the hollow shaft 9, the upper disk 4 is fixed on the flange 10 of the shaft 11. The latter is located in the cavity of the shaft 9, coaxially to the latter. In the upper part, the shaft 11 is made hollow, and its cavity is communicated by three radial windows 12 with a space between the disks 4 and 5. The annular protrusions 7 are fixed on the disks 4 and 5 by means of studs 13. The projections of the upper disk 4 are located between the projections 7 of the lower disk 5. In the annular protrusions 7 in the radial direction are made through grooves 14. The annular protrusions 7 in the radial section have the form of an equilateral trapezium, the smaller base of which is facing the opposite disk.

To change the degree of grinding the device is equipped with a set of interchangeable calibrated shims 15, which are installed between the disk 4 and

₅ flange shaft 11.

The device works as follows.

The material to be processed is fed through radial holes 12 in the hollow shaft 11 / into the center of the shaft 11 into the space between the disks 4 and 5, which are driven in rotation in opposite directions. Passing under the action of centrifugal forces along the radial through grooves 14 on the annular protrusions 7, the material to be processed is crushed using a cut on the cutting pairs formed by adjacent rows of tra ⁵ peptiiform elements of the opposite disks 4 and 5. The crushed material, exposed to the first pair of annular projections 7, moves under the action of centrifugal forces in the grooves 14 to the next 20 cutting pairs. As the material moves to the periphery, the degree of its grinding

increases.

Thus, the implementation of the through grooves 14 in the annular protrusions in the radial direction allows the passage of ²⁵ milchable grain material along the shortest path and at the same time the through grooves play the role of dosing devices that evenly give out the grain to the cutting edges of the trapezoidal elements, while grinding each individual grain occurs by sequential cut

its layers.

/ 1- / 1

Claims (2)

1. A DEVICE FOR GRINDING THE GRAIN, comprising a housing in which two disks are horizontally and coaxially mounted with the possibility of rotation in opposite directions with alternating annular projections, characterized in that, to improve the quality of grinding, through grooves are made in the annular projections in the radial direction, and the upper disk is mounted with the possibility of vertical movement by means of shims. 2. Device by π. 1, characterized in that, in order to improve maintainability, each row of annular protrusions is attached to the disk by means of fasteners. FIG. one with oh about uh sd // 0 one 1196025 2