SU1377145A1 - Arrangement for grinding,,particularly,,forage grain - Google Patents

Abstract

The invention relates to devices for the grinding of various materials, mainly grain, and can be used in feed mills and large factories. The aim of the invention is to improve the quality of the finished product and performance while reducing energy intensity. The grinder is equipped with a rotor 9 inside the housing 1, equipped with vertical grinding elements 2. The feeding windows 12 alternate with longitudinal through channels 13, the surface of which is curved, one of the sides of which is the rotor cutting element 11. Between the housing 1 and the rotor 9 there is a measuring cup 3 with vertical slits 4 for the exit of the stationary grinding elements 2. The housing and the measuring cup are made combined, each in the form of a truncated cone, the smaller base of which is associated with a cylinder. Due to the vertical movement of the housing, a constant minimum gap between the chopping 2 and the cutting 13 elements is provided. The presence of the measuring cup 3, installed with the possibility of vertical movement, provides the number of the desired fraction of the finished product. Performing the rotor in such a way that the through longitudinal channels 12 for outputting the finished product are arranged side by side, eliminates overgrinding of the grain material and improves the quality of grinding. 3 il. o (l con

Description

2

The invention relates to devices for grinding various materials, mainly cereals, and can be used in feed mills, mills and large plants.

The aim of the invention is to improve the quality of the finished product and performance while reducing energy intensity.

FIG. 1 shows schematically a grinding apparatus, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 - node I.

The device comprises a vertical body 1 with stationary grinding elements 2. Measuring cup 3 with vertical slots 4 for grinding elements are mounted coaxially in the body. The housing 1 and the measuring cup 3 are made of a combined form, each in the form of a truncated cone, the smaller base of which passes into the cylinder. Using a special nut 5 and a thread on the cylindrical part of the glass 3, the latter can vertically move along the seating surface 6 of the housing 1 to set the size limit for the fraction of the finished product, which is determined by the height b of the elevated fixed grinding element 2 above the inner surface of the glass 3. In this In this case, the device performs the functions of a judgment. A loading nozzle 7 is installed on the top of the case, and an unloading nozzle 8 is located in the lower part of the case. In the case of COOSE, there is a hollow conical rotor 9 mounted on the shaft of the electric motor 10. The rotor is hollow and open from the side of the loading nozzle and has surface cutting elements 11 in the form of a tooth cutter.

On the occipital side of each tooth, feed longitudinal windows 12 are formed, which alternate with the longitudinal through channels 13 with a curved surface shape at an angle to the vertical with an inclination in the direction of rotation of the rotor. The channels are isolated from the feed windows 12 and from the inner cavity of the rotor. The constant gap between the chopper 2 and the cutting elements 11 is established by the vertical movement of the housing 1 relative to the rotor 9 by means of a screw 14.

The device works as follows. The crushed grain material is fed through the loading nozzle 7 into the inner cavity of the rotor 9. Under the action of centrifugal forces, the grain material is ejected through the vertical feed openings 12 onto the inner surface of the measuring cup 3, which is moved by the cutting element 11 in the direction of the stationary grinding element 2 of the housing 1. Small particles of comminuted material, the size of which is equal to or less than the height b of raising the stationary grinding element 2 above the inner surface of the glass 3, evac ruyuts the longitudinal through bore 13 of the rotor 9 and down through the unloading pipe 8 - beyond the shredder. When meeting with the stationary grinding element 2, the whole grain is cut off by element 11 of the rotor 9 and its measured and cut off part also enters the through channel 12, from which it is removed through the discharge nozzle 8.

Locating the through longitudinal channels 12 for outputting the finished product

5 next to the cutting 11 elements provides a one-time interaction of particles of grain material with grinding elements 2 and cutting elements and timely evacuation of the cut-off particles through the rotor through channels 13, which excludes their overmilling, and thereby ensures the uniform grain size distribution of the finished product and improves the quality of grinding.

By organizing a constant minimum gap between the grinding and cutting elements by vertically moving the body, the stress concentration zone is extremely reduced, as a result of which the amount of dust-like fraction is reduced and the quality of the finished product is increased, and the minimum amount of energy is consumed directly in the process of destruction of the grain material.

The presence of a measuring cup, installed with the possibility of vertical displacement, ensures the measurement of a given fraction of the finished product.

The design feature of the proposed grinder is that the whole process of grinding material is divided into separate, clearly marked steps. Due to the independent operation of each stage of the technological process, changing one of the parameters of the shredder does not entail changing the other. it's the same

5 improves the reliability and durability of the shredder.

The use of the proposed device allows, in comparison with the known, to improve the quality of the finished product, reduce energy consumption and increase productivity.

Claims (1)

Invention Formula A device for crushing predominantly fodder grain, comprising a conical 5-body with fixed grinding elements on its inner surface and a coaxial loading pipe, a discharge pipe and A conical rotor with cutting elements located along the surfaces forming it, characterized in that, in order to improve the quality of the finished product and performance while reducing energy consumption, the rotor is hollow and open from the side of the loading pipe, the cutting elements of the rotor have the shape of a milling tooth, on the back of the head each of which Longitudinal windows are made, a truncated cone glass is mounted between the case and the rotor, the smaller base of which is provided with a cylindrical shell, and vertical slots are made on its side surface, which are adjacent to the crushing elements of the case, while the glass and the case are mounted with the possibility of vertical movement. Corn one