GUIDE VANE PUMP Russian patent published in 2002 - IPC

FIELD: chemical and oil producing machinery, different branches of industry where forced delivery of liquid is required. SUBSTANCE: invention relates to rotary pumps. Proposed guided vane pump has housing with suction and discharge ports and end face covers. Rotor installed inside housing is provided with rectangular vanes fitted in radial slots of rotor on end face surfaces of which bevels are made at acute angle α to plane of end face covers. Bevels begin on circumference located at distance 1 from hub surface. Value of 1 is calculated by formula l = (1,00-1,10)hmaxv

where 1 is distance from rotor hub surface-lower edge of slots to circumference on which bevels begin, mm; hmaxv is maximum projection of vane from slot at moment of movement of vanes along lower member from suction space to discharge space, mm. EFFECT: provision of 3-5% increase of [ump efficiency. 2 dwg