| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: casing 10 of stator for eccentric screw pumps is furnished with elastic lining moving axially and adjoining inner polygonal surface 12. Some polygonal surfaces 12 have at least one groove 16 that reduces adhesion between said lining and stator case. ^ EFFECT: control of adhesion between stator case and lining. ^ 15 cl, 4 dwg |
