Reclaimed precoated sand and batching system thereof

Abstract

The invention discloses reclaimed precoated sand and a batching system thereof and belongs to the field of precoated sand preparation. The reclaimed precoated sand is composed of 85%-90% by weight of reclaimed sand, 5%-10% by weight of crude sand, 4%-8% by weight of macromolecule plastic resin binders. The batching system of the reclaimed precoated sand is sequentially provided with an iron removing machine, a screening machine and a stock bin. A dedusting device is arranged on the stock bin. A weighing scale, a material mixer and a roller heating machine are arranged below the stock bin. The reclaimed precoated sand and a crude sand bucket elevator are arranged on the two sides of the stock bin. A discharge outlet of the roller heating machine is provided with a finished product conveyor belt. According to the reclaimed precoated sand, stacking places for unqualified precoated sand in a workshop can be reduced, a workplace is cleansed, waste is reduced, and the utilization ratio of the precoated sand is effectively improved.

Description

technical field [0001] The invention relates to a regenerated sand and a batching system thereof, in particular to a recycled coated sand and a batching system thereof, belonging to the field of coated sand manufacturing. Background technique [0002] In the foundry industry, when casting castings, it is generally necessary to use a sand box and a sand core to form a space in the shape of a casting product in the sand box, and then pour molten iron in the space, and form a casting after cooling. When the inner cavity of the sand box of the casting is formed, it can be processed into the shape of the component by using easy-to-model wood, etc., and the box is filled with sand to form the inner mold of the box. The internal structure of the casting is formed by a sand core. The sand core is made of core sand. It is usually made by heating the coated sand in the mold in the processed metal mold (also known as hot core box) to form a sand core. This kind of sand core needs to ha...

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Problems solved by technology

[0004] Aiming at the practical problem that the coated sand mixed with impurities cannot be used in production, it is reluctant to discard it, and cannot be put into production. After repeated tests, a solution has been obtained. The invention provides a recycled coated sand and its batching system. Its purpose is to solve more and more unqualified coated sand, free up occupied space, reduce environmental pollution, turn waste into treasure, and use it for production

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