Keywords
Abstract
To increase the preservation of biologically active substances, reduce energy consumption in the grinding process and
obtain a powder of a given degree of grinding from grape pomace and seeds, it is proposed to use a two-stage disk-ball vacuum
mill. The proposed design of a two-stage mill affects the safety of work (excluding explosions) and environmental friendliness (does
not create a dusty environment). An important object in the design of the developed installation is the vacuum pump. The device
and basic principles of operation of a classic single-stage liquid ring vacuum pump manufactured by JSC "BESCOM" and a liquid
ring vacuum pump with the ability to automatically adjust the size of the discharge window, developed at the TSTU Department
of MIG are presented. The main advantages of the proposed pump in comparison with the classic version are shown.Based on the
tests, a comparative analysis of the developed liquid ring vacuum pump with an automatically adjustable discharge window size
and a classical vacuum pump of equal action speed was carried out, the results of which demonstrated the significant efficiency of
using the first machine. It has been established that the specific power consumption in the process of transporting plant powders
is 20-25% lower with the same speed of action. An economic calculation demonstrates the effectiveness of using a new design of
the developed vacuum pump in the technological process of fine grinding of dry plant products due to the vacuum removal of a
given grinding fraction. Therefore, the developed pump is recommended to be used for grinding dry bulk plant products at large
processing enterprises of the agro-industrial complex, food, pharmaceutical and perfumery industries.