Performance evaluation of high-viscosity food masses feeding installations using Russian-made lobe pumps
https://doi.org/10.46845/1997-3071-2024-72-41-56
Abstract
In the food industry, lobe pumps are used to pump working media, which are among the most difficult to manufacture. At the same time, pumps of this type have a number of advantages: low operating costs, long service life and careful movement of food masses without damaging their structure. This paper examines the performance characteristics of Russian-made lobe pumps with the aim of developing a method for assessing performance characteristics based on the parameters of the technical passport. It has been established that with an increase in the dimensionless coefficient of dynamic viscosity, both the flow and the expended power of the lobe pumps of the KNP series of Russian production increase, but with an increase in viscosity its effect on the flow decreases, and on the expended power it increases. At the same time, the calculation results show that with an increase in the viscosity of the pumped liquid, the energy efficiency indicators first improve and then begin to deteriorate. This is due to the fact that pumping more viscous food masses requires large energy costs. A hydraulic calculation of the process pipeline when pumping food mass (processed cheese) has been carried out, which showed that when transporting highly viscous products, a decrease in the diameter of the pipeline has little effect on the flow, but leads to a noticeable increase in hydraulic losses, consumed power and a deterioration in the energy efficiency of the installation. A method has been proposed that will allow one to obtain approximate performance characteristics of Russian-made lobe pumps based on an analogue pump. The characteristics of the lobe pumps obtained in this work make it possible to calculate the flow rate, pressure drop and consumed power at the operating point for a given process pipeline.
Keywords
Supporting agencies: The work was carried out within the framework of the state assignment for 2022 on the topic «Development and improvement of production systems in the food industry».
About the Authors
N. R. Akhmedova
Kaliningrad State Technical University
Russian Federation
Russian Federation
Natal’ya R. Akhmedova, PhD in Biology, Associate Professor of the Department of Technosphere Safety and Environmental Management
Kaliningrad
O. I. Levicheva
Kaliningrad State Technical University
Russian Federation
Russian Federation
Oksana I. Levicheva, graduate student of the Department of Technosphere Safety and Environmental Management
Kaliningrad
V. A. Naumov
Kaliningrad State Technical University
Russian Federation
Russian Federation
Vladimir A. Naumov, Doctor of Engineering, Professor of the Department of Technosphere Safety and Environmental Management
Kaliningrad
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Review
For citations:
Akhmedova N.R., Levicheva O.I., Naumov V.A. Performance evaluation of high-viscosity food masses feeding installations using Russian-made lobe pumps. KSTU News. 2024;(72):41-56. (In Russ.) https://doi.org/10.46845/1997-3071-2024-72-41-56
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