FIELD: pumps.
SUBSTANCE: invention relates to a sewage pump. Pump contains impeller (12) and housing (4). In housing (4) between wheel (12) and housing (4) chamber (20) is formed on the side of wheel (12). Chamber (20) on the side of wheel (12) has first seal (16) between wheel (12) and housing (4) towards inlet side (32) of wheel (12) and second seal (18) between wheel (12) and housing (4) towards pressure side (14) of wheel (12). First seal (16) is provided with transferring means (28, 30) for transferring dirt from chamber (20) to inlet side (32) of wheel (12), and second seal (18) is provided with transferring means (38, 40) for transferring dirt from chamber (20) to pressure side (14) of wheel (12).
EFFECT: invention aims to improve the sewage pump by improving the removal of dirt from the chamber on the side of the impeller and eliminating its clogging with dirt.
15 cl, 3 dwg
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