THE SPREADING OF AIR FLOW VELOCITIES IN THE ASPIRATION CHANNEL MODEL FOR HIGHLY CLOGGED SOY PRODUCTS

Abstract

Today soy is an indispensable agricultural crop. It is used in the food industry and feed production. Soy protein meal and mill cake increase the milk yield of cows by 7-10 percent and the fat content of milk by 0.2-0.3 percent, egg production of chickens by 6-12 percent. Due to the complexity of separation and imperfection of grain-processing machines, a large percentage of soybeans goes to waste, so the price of soybeans is high. To solve this problem, experimental studies were conducted with soy production waste on an air-gravity machine with an aspiration channel. The aspiration channel was upgraded with air flow dividers and accelerators installed on it. (Research purpose) The research purpose is testing the air flow dividers and accelerators on a prototypical sample of an aspiration channel with a vertically ascending air flow. (Materials and methods) A simulation model of the machine was created for research. 30 kilograms of the source material with a moisture content of 11.2 percent was used, which is a waste of soybean seed production, containing whole (35.74 percent) and crushed (51.5 percent) soy of an unspecified variety; and impurities: light (husk, pollen, dust - 10.12 percent), mineral (0.29 percent) and seeds of other crops (2.35 percent). (Results and discussion) The article presents the most successful configuration of air flow accelerators and dividers and air flow velocity. The optimal parameters of the length and width of the aspiration channel are presented. The article also presents graphs of the velocity distribution in a vertically ascending airflow. In the model of a pneumatic separation channel with flow dividers of the processed material and air flow accelerators, with an increase in the specific load, speed alignment is observed along the entire length of the channel at all heights. (Conclusions) The usage of dividers and accelerators solves the problem of stabilizing the interaction of the flows of processed material and air along the length and height of the channel, which will lead to an increase in the efficiency of the separation process.