A kind of coated sand submersible pump impeller blade sand mold and its manufacturing method

Abstract

The invention relates to a precoated sand submersible pump impeller vane sand mold and a manufacture method thereof, comprising a frame sand mold corresponding to a submersible pump impeller inner cavity and vane sand molds corresponding to passages among impeller vanes; the vane sand molds are embedded on the frame sand mold; gaps corresponding to the impeller vanes are provided between the vane sand molds and / or between the vane sand molds and the frame sand mold; the manufacture method of the sand mold of the invention is reasonable; the sand mold of the invention is reasonable in structure, ingenious in design, solid and durable, low in cost, high in molding speed, free of deformation, high in glossiness and environment-friendly.

Description

technical field [0001] The invention relates to a coated sand submersible pump impeller blade sand mold and a manufacturing method thereof. Background technique [0002] The submersible pump impeller widely used at present has been using the method of manually making the impeller blade sand mold and manually extracting the blade. In the molding process, there are defects such as high labor intensity, long time consumption, low production efficiency, and high scrap rate, resulting in unnecessary materials and energy. waste. The coated sand molding method is faster than the manual molding method, not easy to deform, has a high degree of smoothness, and has no pollution to the environment. It mainly solves the existing problems of high labor efficiency, low production efficiency, high scrap rate, cumbersome process, and large capital investment. Problem, in order to overcome the defects and deficiencies of the above-mentioned prior art, coated sand casting has been widely used...

AI Technical Summary

Problems solved by technology

[0002] The submersible pump impeller widely used at present has always used the method of manually making the impeller blade sand mold and manually extracting the blade. In the molding process, there are defects such as high labor intensity, long time consumption, low production efficiency, and high scrap rate, resulting in unnecessary materials and energy. waste of

The coated sand molding method is faster than the manual molding method, not easy to deform, has a high degree of smoothness, and has no pollution to the environment. It mainly solves the existing problems of high labor efficiency, low production efficiency, high scrap rate, cumbersome process, and large capital investment. Problem, in order to overcome the defects and deficiencies of the above-mentioned prior art, coated sand casting has been widely used in products in other industries, but when making sand molds for submersible pump impeller blades, due to the particularity of the multi-angle distortion of the blades, the coated sand casting After the sand is completed, the blade mold cannot be pulled out at all, so the sand mold making of the submersible pump impeller blade with coated sand has not been overcome; if the overall coated sand mold for the impeller blade is still used, the blade mold cannot be pulled out after the blade sand mold is made.

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