FIELD: mechanical engineering; pumps. SUBSTANCE: pump has wheel 1 and inlet branch 5 which accommodates bypass chamber 2 with guide vane plate 3. Vanes 4 of guide vane plate 3 are crescent-shaped. Guide vane plate 3 is located at axial distance equal to 0.3 - 0.5 of calibre of diameter of branch 5 from wheel 1. Vanes 4 of guide vane plate 3 at inlet are installed at angle of 25 30 degrees and at outlet at angle of 150 - 160 degrees relative to front of guide vane plate 3. EFFECT: enhanced stability of operation of hydraulic system with vane pump owing to increase in head at low delivery duties. 2 dwg
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