SU706112A1 - Roll breaker for grain - Google Patents

Description

(54) ROLLER GRAIN CRUSHER

one

The invention relates to equipment for the processing of grain, namely, devices for grinding it.

A roll mill crusher is known, comprising a casing, four notched rolls, a feed hopper and a nozzle for withdrawing product 1.

The disadvantages of the known roller crusher is a decrease in productivity with an increase in energy consumption due to the adhesion of the crushed material to the roller and working surfaces of the rolls.

The purpose of the invention is to reduce energy consumption and ensure the possibility of crushing grain of povipennoy moisture.

The goal is achieved by the fact that the rolls are installed with sequential engagement and the formation of a cavity between them, which communicates with the grain feed hopper.

In this case, the rolls are made helical and have annular grooves interacting with the scrapers, and the section of the tooth tops is a triangle.

FIG. 1 schematically shows the proposed roll crusher, a longitudinal section; in fig. 2 shows section A-A of FIG. one;

in fig. 3 is a diagram of the engagement of the crusher working bodies (the initial contour of the roll teeth is shown with a dotted line); node I in FIG. one.

The crusher has a composite casing 1, which provides the possibility of adjusting the engagement between the drive roller 2 and the rollers 3 sequentially engaged with it, the scraps 4 entering the annular grooves 5, and the guide 6 installed between the rollers.

During the operation of the crusher, the upper pair of rolls with an adjustable gap delivers a predetermined amount of grain in the direction of 6 to the crushing zone between fully engaged teeth of rolls 2–3 and 3–3. The crushing of the grain occurs in the cavity of the teeth when they are rolled over each other and pushed into the annular grooves 5, which are cleared of the crushed product by the scrapers 4.

Crushing the grain between the surfaces with an insignificant speed of their sliding over each other and the exclusion of bulk compression of the product provide a reduction in the energy intensity of the process, which was confirmed when testing a crusher prototype. At the same time, making rolls with composite of cast or stamped elements reduces the cost of their manufacture.

Claims (2)

1. A roll crusher for grain, comprising a housing, four toothed rollers, a feed hopper and a nozzle for withdrawing the product, characterized in that, in order to reduce energy intensity and to ensure the possibility of crushing high-moisture grain, The rolls are mounted with sequential engagement and the formation of a cavity between them, communicating with the grain supply hopper. 2. Crusher according to claim. Characterized in that the rolls are made helical and have annular grooves interacting with the scissors, and the section of the tooth tip is a triangle. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 391851, cl. B 02 C 4/02, 1973. - around centro