The Justification of the Design and Operating Parameters of the Diaphragm Pump

The sustainability of ensuring food security depends on the efficiency of its agriculture and food industry. The only point where food security is not currently ensured is milk and high-protein dairy products. In the milk processing chain, milk is indeed moved through pipelines, pumped from one container to another, and processed through various devices. The most important distinctive feature of the diaphragm-type pump is a minimal mechanical effect on a pumped product due to the exclusion of the influence of the centrifugal forces on it. Therefore, they are mostly used for light pumping of the products, in particular milk. The net volume of the working chamber, durability and efficiency of the pump application largely depend on the diaphragm design. The pump flow was studied depending on the stroke frequency of the diaphragm, the height (resistance) of the liquid injection line into a receiving tank and a number of pump geometry and its parts, in particular, the design of the diaphragm and valves. The flow was determined as a quotient of dividing of liquid volume getting into the receiving tank during the pump action period. Theoretical dependencies were obtained to calculate the diaphragm pump efficiency, the capacity of its working chamber and the required working diameter of the diaphragm. The obtained research results formed the basis for the developed design of the diaphragm pump with an electromagnetic drive. Based on the performed research, the prototype of the electrically driven diaphragm pump was developed and tested under the production conditions.