FIELD: engines and pumps.
SUBSTANCE: invention is related to displacement pump of rotor type. Pump comprises body (20), stator (42), rotor including shaft (8) and disk element (12) protruding in radial direction and having configuration of wavy disk, scraper (110) with slot for contact interaction, having specified radial depth and specified axial width. Slot interacts with protruding disk element (12), guide (92) for scraper (110), having configuration of plate with groove and fixed directly or indirectly in body (20). Guide (92) provides for fixation of scraper (110) in direction along circumference and reciprocal motion of scraper (110) in axial direction. Scraper (110) includes the first groove, having specified depth and passing along its radially external edge surface; and the second groove and the third groove, every of which has specified depth and passes in radial direction accordingly along single frontal edge surface and along other frontal edge surface of scraper (110). Specified three grooves are arranged such that part of guide is arranged in them (92), and they provide for reciprocal motion of scraper (110) in axial direction.
EFFECT: creation of simple pump, which is inexpensive to make.
13 cl, 12 dwg
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