Hydraulic transport in small livestock farms

Abstract

The article highlights the advantages and benefits of pipeline transport of liquid feed mixtures on small pig farms, the device and the principle of operation and technical characteristics of the improved rotor pump developed by the authors of the article. Methods of experimental research to determine the concentration of feed mixtures, the influence of the shape of the separator on the performance characteristics, the required power and the flow of an improved pump are presented. The results of the experiments showed that one of the bottlenecks limiting the operation of rotary pumps on feed mixtures of increased concentration is the low suction capacity of the pump, that is, the design of the suction pipe of the pump, where an increase in resistance with an increase in the concentration of feed mixtures causes a breakdown of the operating mode and cavitation. To resolve this issue, we used a screw feeder installed in front of the pump suction nozzles. It was found that if the screw feeder provides excess pressure within (about, 0.25 ... 0.3) 105 Pa per suction cavity, the pump operates stably and reliably.

Results of the study of rotary feed pump with separator and screw feeder

“…This leads to an increase in pressure losses in the pipeline and to a decrease in the flow and speed of feed mixtures in the pipeline. In addition, the increase in losses is caused by friction between the liquid phase and solid particles of feed, as well as friction of solid particles of feed against the walls of the pipeline [7].…”

The dependence of the amount of energy obtained by solar cells on the temperature of the environment

“…In works [5], it was shown that solar cells provide the specified energy when the ambient temperature is equal to 20 0 C, and when the solar cells are heated to 40-45 ℃, its capacity decreases by 15÷17%.…”

A technology for teaching ESP to those studying ecology and environmental sustainability

“…According to many scientists, this catastrophe could happen long before the crisis due to the lack of any fossil resources. All scientific progress is not capable of preventing ecological destruction, because artificial systems cannot replace the natural biological component of the environment and, therefore, cannot regulate the processes occurring in the biosphere [1,2,3].…”