A special sand separation device

Abstract

The invention relates to a separation device for special sand, which includes a mixing bin, a grinding wheel and a separating sand bin. A blanking plate is arranged between the mixing bin and the grinding wheel, and one end of the blanking plate is connected to the grinding wheel. The above-mentioned mixing bin is fixedly connected, and the other end of the blanking plate is located above the described grinding wheel so that the sand in the mixing bin enters the selecting grinding wheel, and the selecting grinding wheel is fixedly connected with the separating sand bin through the support arm. The above selected grinding wheel is connected with the motor. The special sand separation device of the present invention mainly relies on the principle that the horizontal displacement of objects with different bulk densities is inconsistent under the same kinetic energy condition and the principle of sand stratification occurs to separate special sand from ordinary silica sand or magnetic impurities, and the separation result is more accurate. Ordinary silica sand It has a high degree of separation from special sand, and the separation technology is relatively simple, so no complicated design process is required.

Description

technical field [0001] The invention belongs to the field of casting equipment, and in particular relates to a separation device for special sand. Background technique [0002] The modern foundry production process is mainly based on sand casting, and the main raw material is mainly silica sand. But for special castings, traditional silica sand is not up to the task. The refractoriness, particle size, and thermal conductivity of silica sand cannot meet the requirements of special castings. When the refractoriness of silica sand is relatively low, it will lead to sand sticking defects in castings. When the particle size of silica sand is uneven, it will cause defects such as pores in castings. When the thermal conductivity of silica sand is poor, it will form process hot knots in the production of large steel castings, causing The casting has shrinkage cavity and shrinkage defects at this position. Therefore, large-scale iron castings, steel castings, and high-alloy castin...

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Problems solved by technology

In addition, the cost of special sand is also relatively high. Treating the special sand used in foundry production as solid waste will dramatically increase the operating costs of foundry companies.

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