FIELD: engines and pumps.
SUBSTANCE: set of invention relates to single-screw eccentric pump with stator readily broken to external cylindrical element and internal element. Stator 20 comprises solid cylindrical inner part 22 with external thread on inner peripheral surface and inner cylindrical part 24. There are flanges 25 extending radially outward on both edges of internal part 22 and external locating part 28 between said flanges 26. External cylindrical part 24 tightly abuts on said cylindrical locating part 29 without adhesion therewith while both components of external cylindrical parts 24 are brought in contact with flanges 26.
EFFECT: ruled out internal element deflection and deformation as well as abrasion and instable output parameters.
14 cl, 13 dwg
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