Guide shell structure for water pumps

Abstract

The invention belongs to the technical field of pump supplies, in particular to a guide shell structure for water pumps. The guide shell structure comprises a plurality of guide blades; the left and right of and the outside of the guide blades are fixed through a left cover and a right cover; the inner sides of the guide blades are fixed through inner braces so that the guide blades are evenly distributed between the left cover and the right cover; a left shell and a right shell are provided outside the left cover and the right cover; an impeller ring seat is fitted to the upper ends of the left and right covers; a moving impeller ring is arranged on the impeller ring seat; an impeller ring cover is disposed above the moving impeller ring and is fitted to the impeller ring seat; an inner sleeve seat is welded to the inner braces; guide blade sleeves are embedded in the inner sleeve seat. The guide shell structure has the advantages that a fit gap between the impeller ring and an impeller in the guide shell can be effectively guaranteed, coaxiality of the impeller is also ensured after a pump shaft is mounted, and operating efficiency of a pump can be relatively improved and ensured.

Description

technical field [0001] The invention belongs to the technical field of water pump appliances, in particular to a water pump diversion shell structure. Background technique [0002] The existing water pump impeller is matched with the mouth ring of the guide body, and most of them adopt a hard-to-hard structure. For example, the water outlet end of the guide shell (guide vane, support guide vane, water outlet guide vane) is equipped with a fixed copper sleeve or PTFE. , to cooperate with the inlet end of the impeller. Its shortcomings: the mouth ring in the guide shell is fixed and cannot be moved. In the installation design of the pump shaft and the impeller, the impeller and the guide shell (including guide vanes, supporting guide vanes, and water outlet guide vanes) must be considered. The gap problem at the mouth ring, due to the accumulated processing errors, the gap here is relatively large during design, and the shape and position tolerance is unstable, which directly...

AI Technical Summary

Problems solved by technology

Its shortcomings: the mouth ring in the guide shell is fixed and cannot be moved. In the installation design of the pump shaft and impeller, the impeller and the guide shell (including guide vanes, supporting guide vanes, and water outlet guide vanes) must be considered. The gap problem at the mouth ring, due to the accumulation of processing errors, the gap here is relatively large during design, and the shape and position tolerance is unstable, which directly affects the overall working efficiency of the pump

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