Rationale for the design and workflow diagram of a pontoon pump for homogenization and pumping of liquid organic fertilizers from manure lagoons

Liquid manure effluents of pig farms can be used as fertilizers after some treatment. In order to substantiate the design and technological scheme of the pontoon pump for homogenization and pumping of liquid organic fertilizersfrom manure lagoons and reservoirs, the authors analyzed scientific, technical and special literature, as well as carried out patent research of relevant methods and devices. The developed technological scheme of a pontoon pump represents three main stages: grinding and mixing in the dismembrator, pumping and transportation by the screw part of the pump to the discharge chamber, feeding into the pressure line by the vane part of the pontoon pump. According to the method of multifactor experiment planning, the parameters having the greatest influence on the pumping of liquid organic fertilizers have been determined: the diameter of the auger conveyer casing, the length of the auger conveyer, and the shaft speed. The paper provides a rationale for a design and workflow diagram of the pontoon pump with a dismembrator. This working element crushes and mixes coarse-dispersed mass (liquid organic fertilizers), and thus increases the efficiency of their homogenization and pumping from the manure lagoons of livestock facilities. The main working element of the pumping part is the auger conveyer, which is a shaft with a three-round spiral coiled on it. Search experiments were carried out in production conditions of treatment facilities of the “Kirovsky’ pig farm designed for 30 thousand pigs kept litter-free. The conducted researches determined the effective design and technological scheme of the pontoon pump used for homogenization and pumping of liquid organic fertilizers from manure lagoons. Based on the results, we calculated its main operating parameters and built the pressure-flow characteristic of the proposed design of a pontoon pump prototype.

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