Submersible pump apparatus with multiple mechanical seals and multiple reservoirs to protect the motor from infiltration of undesired fluid

摘要

A submersible pump apparatus comprising a motor assembly, a pump assembly, and a plastic motor base. The motor assembly is either a canned motor assembly or a four inch motor assembly. The canned motor assembly is designed to prevent the immediate destruction of the submersible pump apparatus upon the occurrence of the breaching or leaking of the seals. The pump assembly is designed with either a single stage pump or double stage pump that utilizes a unique combination of propellers and intermediate flow straighteners, and driving mechanisms for the same. The plastic motor base is designed to accommodate attachment of either the canned motor assembly or the four inch motor assembly to the same pump assembly.