IMPROVEMENT OF CONSTRUCTIVE AND MODE PARAMETERS OF CRUSHERS
The article discusses the issues of improving the design-mode parameters of the heat-treated grain crusher. The classification and analysis of shredders revealed the most promising design solution - a hammer mill with an improved hammer design. It has been established that the shape of the hammer with two cutting edges and the timely evacuation of the crushed product from the operating range of the hammers increases the efficiency of grinding. It is proved that the work expended on the destruction of raw grain, 2 times more than the heat-treated, the speed of turning (ϑ=10.5 m/s) of raw grain is 5% more than the heat-treated (ϑ=9.9 m/s). This demonstrates the advantage of technology for the preparation of grain with the use of heat treatment. Significant factors and optimal design-mode parameters of the experimental crusher were determined: rotational speed - 1750 rpm, finished product yield height - 147.5 mm, blade (agitator) width - 28 mm, material feed to the crusher - 17.6 kg/s. The payback period for the external crusher is 2.3 years.