Multi-stage air-cooled molding sand cooling equipment and molding sand cooling method thereof

Abstract

The invention discloses multi-stage air-cooled molding sand cooling equipment and a molding sand cooling method thereof. The multi-stage air-cooled molding sand cooling equipment comprises an elevator and a cooling sand bin, wherein a multi-stage cooling device, an air draft dust removal device and a spraying device are arranged in the cooling sand bin, the multi-stage cooling device comprises a plurality of cooling mechanisms, and the multiple cooling mechanisms are fixed to the two sides of the cooling sand bin from top to bottom and arranged in a crossed mode; each cooling mechanism comprises a sand raising machine, an air blowing pipe, an air blower and a driving motor, wherein the driving motors and the air blowers are fixed to the outer side of the cooling sand bin through mounting plates, the driving motors are connected with the sand raising machines through conveying belts, the sand raising machines are arranged in the cooling sand bin, the air blowers are connected with the air blowing pipes, and the air outlet ends of the air blowing pipes are arranged in the cooling sand bin. The multi-stage air-cooled molding sand cooling equipment and the molding sand cooling method thereof adopt the structure, and are suitable for a production environment with large production capacity, large molding sand circulation capacity and high circulation frequency, so that the molding sand cooling efficiency is greatly improved, and the waste and defective rate of castings is reduced.

Description

technical field [0001] The invention relates to the technical field of material sand casting, in particular to a multi-stage air-cooled molding sand cooling device and a molding sand cooling method thereof. Background technique [0002] In the material sand casting industry, the temperature of the molded sand after pouring is high, and it cannot be recycled directly for remodeling. If the temperature of the hot sand exceeds 40 degrees, the performance of the molded sand will be seriously affected, and even the mold cannot be molded. Therefore, the temperature of the hot sand after pouring needs to be lowered. To make it meet the requirements of use, there are currently the following methods and equipment for casting sand cooling in the foundry industry. One is the vibrating boiling cooling bed. Due to the small internal space of the equipment and the limited cooling capacity, it is currently used more in the molding process of resin sand. Clay Sand molding technology is less...

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Problems solved by technology

[0002] In the material sand casting industry, the temperature of the molded sand after pouring is high, and it cannot be recycled directly for remodeling. If the temperature of the hot sand exceeds 40 degrees, the performance of the molded sand will be seriously affected, and even the mold cannot be molded. Therefore, the temperature of the hot sand after pouring needs to be lowered. To make it meet the requirements of use, there are currently the following methods and equipment for casting sand cooling in the foundry industry. One is the vibrating boiling cooling bed. Due to the small internal space of the equipment and the limited cooling capacity, it is currently used more in the molding process of resin sand. Clay Sand molding process is less used

The second is the double-disc cooler, which is suitable for clay sand molding process, but the cooling capacity is also limited

The third is the drum-type sand cooler, which sprays water on the outer wall of the drum. Since the molding sand cannot be fully dispersed in the drum, the cooling effect cannot meet the requirements when the amount of sand used is large.

The fourth is the "U" type tubular sand temperature regulator, its disadvantage is that the efficiency is low, and when the sand temperature is too high, the cooling intensity cannot meet the production requirements

Fifth, the molding sand is scattered for natural cooling or blowing cooling. The disadvantages are low production efficiency, occupying a large production site, and causing environmental pollution.

[0003] In the case of large production volume, large amount of molding sand circulation, high cycle frequency, and high temperature of molding sand, especially in summer high temperature season, it is difficult to reduce the temperature of hot molding sand to an appropriate range, resulting in a high rate of casting waste and defective products

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