FIELD: engines and pumps.
SUBSTANCE: proposed pump consists of housing 2 with suction and delivery unions 3, 4 connected with elastic tubular element 1. Pump incorporates motor 11 with rotor 6 carrying finger 7 rigidly secured thereon to get in contact with elastic tubular element 1 by intermediate link 8. Tight housing 8 accommodates extra union 5 to equalise excess pressure in housing and aforesaid unions.. Second end of equalising union 5 serves to feed fluid to tank 16. Pump is equipped with pressure leak control chamber with built-in pressure pickup 14 connected with tight housing 1 to make external member of rotor shaft 6.
EFFECT: longer life at high excess pressure in elastic element, expanded applications.
2 cl, 2 dwg
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