IMPROVING THE DESIGN OF A CENTRIFUGAL GROUND PUMP IN ENRICHMENT PRODUCTION
Povetkin V. Bukayeva A. Nurmukhanova A. Seitkhanov A. Kerimzhanova M.
2023National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2023#2023Issue 5202 - 216 pp.
Hydrotransport equipment of mining and processing plants has a low operational reliability, insufficient working resource due to intensive hydroabrasive wear of working surfaces of pipelines and pumping equipment, drawbacks in the design of some nodes of groundwater pumps and their operation. Significant hydroabrasive wear of the main element of the ground pump design, the impeller, causes additional disturbing dynamic forces, which leads to increased vibration of the unit and, consequently, to its premature failure. Until now, insufficient attention has been paid to the influence of water abrasion of the impeller on the service life of their units and their service life. The paper analyzes the manifestation of cavitation wear of parts of the flowing part of groundwater pumps, outlines measures to reduce cavitation by favorable conditions of fluid intake into the pump and reducing the vacuum suction height. A number of measures of technological and constructive decision, decrease of harmful influence of cavitation are also offered. Materials for manufacturing parts of the centrifugal soil pump with high performance and high service life have been selected and analyzed. These alloys showed high corrosion resistance due to their high chromium content. The ways of improvement of the centrifugal soil pump parts design, allowing to increase the resource of their work, to create an automated system of diagnosing the condition of the construction as a whole are outlined. On the basis of the analysis of wear of parts of a centrifugal soil pump the improved designs of an armored disk with a replaceable disc and a composite impeller with improved indicators of wear resistance and maintainability are developed, allowing to increase their service life, to reduce the cost of spare parts and to reduce the repair period. The influence of wear and tear of centrifugal soil pump parts on its operating parameters has been determined; the dependence of pump head and pumping capacity on the volume of pumped hydro-abrasive mixture has been established.
armor disc , hydroabrasive wear , impeller , measuring bench , soil pump , throttling
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Al-Farabi Kazakh National University, Almaty, Kazakhstan
Caspian University of Technology and Engineering named after Sh. Yessenov, Aktau, Kazakhstan
South Kazakhstan University named after M. Auezov, Shymkent, Kazakhstan
Kazakh National Technical University named after K.I. Satpayev, Almaty, Kazakhstan
Al-Farabi Kazakh National University
Caspian University of Technology and Engineering named after Sh. Yessenov
South Kazakhstan University named after M. Auezov
Kazakh National Technical University named after K.I. Satpayev
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