FIELD: engines and pumps.
SUBSTANCE: pump comprises housing 1 with intake and discharge branch pipe 2. Housing 1 accommodates impeller 3 made up of disk 7 with bent vanes 8 fitted thereon perpendicular thereto. Impeller 3 represents all-cast member. Vanes 8 feature variable section expanding from impeller center. Openings 9 are made in disk 7 between vanes 8. Bottom plane of disk 7 is arranged below bottom plane of vanes 8 to allow vanes 8 extending beyond disk 7 doubling as scrapers to eliminate sticking of concrete particles between impeller and housing. Note here that impeller doubles a disperser to mix mortar.
EFFECT: longer life, simplified design and ease of manufacture.
3 dwg
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