FIELD: mechanical engineering.
SUBSTANCE: invention relates to eccentric screw pumps or motors. In proposed eccentric screw pump or eccentric screw motor teeth directed inwards the stator and tooth spaces are provided with additional rib-slot structure. Thanks to it friction between stator and rotor is reduced as pressure force at constant sealing action can be reduced or area of contact at increased pressure force is reduced.
EFFECT: reduced friction between rotor and stator.
64 cl, 10 dwg
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