Light small -size single -stage centrifugal pump's seal structure

The utility model relates to a light small -size single -stage centrifugal pump's seal structure, be by: the end cover, the recess, rear cover plate of the impeller, impeller blade, the front shroud of impeller, mechanical seal and sealing ring are constituteed, the front shroud of impeller sets up the front portion at impeller blade, rear cover plate of the impeller sets up and constitutes impeller part spare at impeller blade's rear portion, the tip is equipped with the end cover before the rear cover plate of the impeller, be equipped with the end cover recess on the right side of end cover, the sealing ring sets up on rear cover plate of the impeller, the sealing ring is end cover recess interior the inclosed space of component " the sealed chamber " on protruding form embedding end cover right side, the mechanical seal that the messenger set up between end cover and rear cover plate of the impeller sets up at sealed intracavity, realize that mechanical seal blocks the wearing andtearing of solid particle