MODELING OF THE PROCESSES OF INTERACTION OF FIBER MASS WITH BOILER GRID AND ISOLATION OF HERBULAR IMPURITIES FROM IT

Abstract

In the republic, the volumes of harvesting of hard-to-clean breeding varieties «S-6524», «Sulton», «An-Bayaut-2», «Namangan-77», «Omad» and others have increased annually. In 2018, their share amounted to 80% of the total harvest. With each year, the volume of harvesting raw cotton of machine harvest is increasing. The weediness of raw cotton at machine gathering is 10-15% more than manual. The peel with fiber, broken seeds and nodules are formed in the process of ginning and, therefore, they can only be removed when ginning raw cotton. In order to improve the quality of the fiber, in the mid-80s, two individual grates were installed in the gin itself for cleaning the fiber. But due to the flaws in the mounting structure of the individual grates on the side walls of the gin, it is impossible to establish the required gaps between the saw teeth and the edges of the grates, which reduces the release of hives and trash, as well as increased waste fiber. In developed cotton-growing countries such as the USA, China, India, etc., fiber cleaning sections are not used in the construction of gins. They have fiber cleaned on fiberglass aerodynamic and condenser type. In this case, the fiber is subjected to enhanced cleaning according to the principle of scratching, which increases the fiber content of the waste, thereby reducing the amount of fiber produced by grades. Improving the quality of fiber, reducing waste losses and competitiveness in the global market is an urgent task. To achieve these goals, a modernized saw gin with a grate of a new design for fiber cleaning has been created. A theoretical study was made on the change in the mass of a piece of fibrous material that occurs in the process of shock interaction with the fire grate.