The feasibility statement on use of the liquid ring vacuum pump with automatically regulated delivery window in case of transportation of bulk solids
In agro-industrial complex a large amount of various loose plant materials is made: various grain crops, herbs used in medicine, yeast, etc. which need to be transported to the place of conversion, storage and implementation on long distances. For transportation various including bulk solids, in many cases pneumotransport is used. When using pneumotransport of costs of energy big, low production, preserving product quality (dry plant materials), safety of work (explosions) and ecological compatibility (dust content of environment) is not guaranteed. Therefore vacuum transportation of bulk solids is perspective. In article the device and the basic principles of operation of the liquid ring vacuum pump with automatic control of the size of a delivery window and installation for transportation of loose foodstuff on the basis of the created depression is described. Benefits of the developed pump are given and its main shortcoming which consists in requirement of the liquid limiting mobility is specified. The algorithm of the choice of the pump for transportation of bulk solids on required performance on the set distance is given. Comparative testing of the developed liquid ring vacuum pump with automatically regulated size of a delivery window with the industrial vacuum pump of identical performance which results have shown efficiency of its application are carried out. Costs of specific capacity with an identical productivity are 15-20 % lower. Economic calculation has shown that efficiency of use of the developed pump in engineering procedure of vacuum transportation of loose foodstuff positive: higher cost value of the pump considerably influences economy of energy, due to use of automatic control of a delivery window. Therefore developed pumps are recommended to be used for transportation of loose foodstuff on the large overworking enterprises of agroindustrial complex.