Abstract
The article is devoted to the study of the influence of carbon content in the auger material on its wear during dehydration of municipal solid waste in the garbage truck. Using the method of regression analysis, the hyperbolic regularities of screw wear depending on the carbon content in its material for different values of the friction path were determined. Graphical dependences of auger wear were constructed, depending on the carbon content in its material for different values of the friction path, which confirms the sufficient convergence of the obtained patterns. Carrying out additional regression analysis allowed to obtain the pattern of wear of the auger, depending on the carbon content in its material and the friction path, which established the following. After two weeks of operation and wear of the auger during the dewatering of solid waste in the garbage truck, increasing the carbon content in the auger material from 0.2% to 2.1% leads to a decrease in the energy intensity of dehydration of solid waste from 19.6% to 4.4 %, which makes the process of dehydration in the garbage truck cheaper. The graphical dependence of the reduction of energy consumption of dehydration of solid household waste due to increased carbon content in the auger material during its two-week wear is presented. The practicality of further research is to determine the rational material of the auger and ways to increase its wear resistance
Highlights
In municipal engineering, an important task is to increase the wear resistance and reliability of machine parts [1, 2]
One of the promising technologies for primary processing of municipal solid waste (MSW), aimed at reducing both the cost of solid waste transportation MSW and the negative impact on the environment is their dehydration with accompanying processes of pre-compaction and partial grinding during loading into the garbage truck
The values of auger wear for different values of carbon content in its material and the friction path are given in table. 1 [3]
Summary
An important task is to increase the wear resistance and reliability of machine parts [1, 2]. In the garbage truck dehydration of MSW is performed by a conical screw, the surface of which is intensively worn out due to the available friction This is due to the fact that MSW contains, in particular, components such as metal, glass, ceramics, stones, bones, polymeric materials, which can be attributed to abrasive materials, because they have different shapes, sizes and hardness, and available in MSW moisture 3992% by weight creates an aggressive corrosive environment. The work [3] contains the results of experimental studies of wear resistance of different auger materials with different thermal and chemical-thermal treatment in corrosive-abrasive medium on special friction machines that simulated the operating conditions of extruders in the processing of feed grain with saponite impurities. To ensure high wear resistance of extruders in the manufacture of animal feed with admixtures of the mineral saponite, it is recommended to use for the manufacture of parts of the extruder unit steel KH12, reinforced by nitro hardening technology
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