Sand mulling and sieving device

Abstract

The invention provides a sand mulling and sieving device which comprises a bracket, a feeding hole, a spiral conveyer, a sand mulling machine and a vibrating sieve, wherein the sand mulling machine is composed of a barrel, a spiral stirring impeller, an impeller lifting structure and a discharge hole, wherein the barrel is of an inverted conical structure; the spiral stirring impeller is clung to the barrel from top to bottom; the discharge hole is formed in the bottom of the barrel; the vibrating sieve is composed of a sleeve, a semi-circular barrel structure sieve and a vibrating motor; the semi-circular barrel structure sieve stretches into the sleeve and is divided into a semi-arc sealed barrel plate and a straight plate sieve; one end of the vibrating sieve is connected to the discharge hole of the sand mulling machine on the bracket, and the other end of the vibrating sieve is provided with a discharge device; the angle between the vibrating sieve and a horizontal surface is kept within 30-45 degrees. The barrel of the sand mulling machine is of the inverted conical structure, the spiral stirring impeller is clung to the barrel from top to bottom and the impeller lifting structure is capable of fully and uniformly stirring; the vibrating sieve is independent in structural design is of a slope automatic-flow vibrating sieve form, and is capable of effectively obstructing unclean high-speed downflow sieving by use of a triangular bulge.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a sand mixing and screening device. Background technique [0002] In the casting process, sand mixing screening is very important, which is directly related to the quality of castings. If the mixing is uneven, the viscous clay slurry cannot be coated on the surface of the sand grains, and high-power sand mixing equipment with kneading effect is required, otherwise It is impossible to obtain good-quality molding sand; there are large particles of impurities in the mixed raw materials, and the molding sand is easy to flow during molding, which will cause low rigidity of the mold and poor dimensional accuracy of the casting. Contents of the invention [0003] The object of the present invention is to provide a sand mixing and screening device for removing impurities and improving quality. The purpose of the present invention is achieved through the following technical solutions: ...

AI Technical Summary

Problems solved by technology

[0002] In the casting process, sand mixing screening is very important, which is directly related to the quality of castings. If the mixing is uneven, the viscous clay slurry cannot be coated on the surface of the sand grains, and high-power sand mixing equipment with kneading effect is required, otherwise It is impossible to obtain good-quality molding sand; there are large particles of impurities in the mixed raw materials, and the molding sand is easy to flow during molding, which will cause the rigidity of the mold to be low and the dimensional accuracy of the casting to be poor

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