Low wear electric membrane pump - has magnetic plate on centre of membrane moved by magnetic field from rotating magnetic plate

摘要

The pump membrane (22) has the multi pole magnetic plate (24) attached to its centre and spaced from a similar plate (17) rotated by the electric motor shaft (16). The motor rotates the second plate and the membrane is moved in either direction by the interaction of the magnetic poles. No mechanical contact is provided, removing one cause of wear. The pump can be operated as a precision unit by having a multitude of poles, suitably spaced. The pump chambers can be similarly arranged in a preset number, each with non return valves. The pump operates on liquids and gasses. USE/ADVANTAGE - E.g. for carrying about person for taking gas samples to monitor danger to carrier. Compact drive, low wear, low pump drag.