Chrome sand sorter

Abstract

A chrome sand sorter relates to fine sorting recovery equipment of chrome sand for foundry. The chrome sand sorter comprises a blowing unit, a separating screen and a vibration mechanism, the separating screen comprises a screen box, screen meshes and an air distribution chamber, one side of the screen mesh is provided with a long strip-shaped blanking hole, and the air distribution chamber is connected with an air storage cabinet and the blowing unit by a hose. Various stainless steel sintering screen meshes with certain rigidity and strength are adopted in the chrome sand sorter, which meets requirements of a sorting process including boiling and jumping; an air filter is adopted in the blowing unit for filtering intake air and then blowing the intake air to the screen meshes, which effectively prevents dust-laden air from blocking the screen meshes; the air storage cabinet and the air distribution chamber can ensure uniformity and stability of wind pressure; an adjustable vibration frame can be adjusted longitudinally and horizontally, thus being capable of realizing arbitrary tilting of the screen meshes; a compound eccentric gear can cause the oscillation amplitude of the vibration frame to be adjustable for a plurality of levels; and a stepless speed changing motor causes the vibration frequency of the vibration frame to be adjustable. A sorting principle of combining wind power and vibration is adopted in the chrome sand sorter based on different specific weights of materials, thus the chrome sand sorter has the advantages of scientific and reasonable structure, good sorting effect and recovery ratio up to more than 95%.

Description

Technical field:

[0001] The present invention relates to foundry technology, mainly relates to foundry sand, particularly relates to the selection and recycling equipment of used foundry chrome sand. Background technique:

[0002] When casting large iron castings or steel castings, chrome sand is often used to prevent the penetration of liquid metal and improve the surface quality of castings. Chrome sand is a high-quality high-temperature-resistant material, the main component of which is Cr2O3. It is a high-quality neutral molding material with a small expansion coefficient and high thermal conductivity. , does not chemically react with other metal oxides, and has the characteristics of solid-phase burning orange, which can promote the sequential solidification of castings, resist the long-term thermal action of high-temperature molten metal, resist the penetration of high-temperature molten metal, and avoid sticking on the surface of castings. Sand and crack defects ensu...

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