FIELD: engines and pumps.
SUBSTANCE: proposed pump front collar if provided with two floating rings 7 and 8 of groove seals, shaped spacer bush 9 shaped spacer bush 9 with inner and outer cavities 10 and 11 connected via holes 12 is fitted in pump housing 4 between floating rings 7, 8. Chamber 11 is connected with manifold 15 while manifold chamber is connected via holes 16 with pump inlet chamber 17.
EFFECT: higher-efficiency high rpm rotary pump with high anti-cavitation properties.
1 dwg
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