FIELD: mechanical engineering; materials handling facilities. SUBSTANCE: invention can be used in different industries for transfer of liquid media, including aggressive ones. Elastic pumping element of pump is made in form of hollow cylinder connected hermetically by end faces with pump housing and installed with offset relative to housing and rotor. Pump rotor shaft is provided with eccentric drive, and at least one of contacting surfaces of pump is made in form of quadratic surface of revolution. EFFECT: simplified design, improved performance characteristics of pump. 2 dwg
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