Sand cooling apparatus

Abstract

The invention discloses a sand cooling apparatus. The sand cooling apparatus comprises a vertical casing, a material inlet and a material outlet. The apparatus also comprises a gas inlet, a guiding device and a gas outlet. The lower portion of the casing plate of the vertical casing is provided with gas inlet holes. The gas inlet is arranged outside the lower portion of the vertical casing, completely covers the gas inlet holes, and has a closed connection with the outer wall of the vertical casing. The upper right portion of the gas outlet is fixedly connected to the right side of the upper portion of the vertical casing in a closed manner, and is connected with the internal of the vertical casing. The guiding device is arranged in the vertical casing, the guiding device, the vertical casing and molding sand in the vertical casing form an S-shaped gas channel, and the gas channel connects the gas inlet with the gas outlet.

Description

technical field [0001] The invention relates to casting molding sand processing equipment, in particular to a sand cooling device for cooling molding sand. Background technique [0002] Sand casting is a commonly used part production method in the current metal product manufacturing industry. Sand casting is a process of molding with sand and then casting. After casting, most of the molding sand will be very hot, and these used molding sands are called used sand in the foundry industry. The continuous use of old sand in casting will affect the quality of castings, causing defects such as sand inclusions, sand sticking on the surface, sand washing, and pores. In addition, the old sand grit will stick to the mold and affect the geometry of the casting. In order to reduce production costs, the old sand is generally regenerated and reused through the sand treatment system, and the temperature of the old sand will directly affect the performance of the old sand. First of all,...

AI Technical Summary

Problems solved by technology

"It can be seen from this that the device belongs to the cooling of the molding sand during the circulation process. The molding sand enters the equipment from the sand inlet and then flows through the sand slide plate and then flows out from the sand outlet. The residence time of the molding sand in the old sand flow cooling and dust removal device is relatively short. The temperature inside the tower exceeds 200°C, the energy conversion utilization rate is low, and a large amount of cooling water is needed in the cooling process, the cooling effect is not obvious and the energy consumption is high

[0004] Chinese patent document CN102430708B (patent application number 201110429838.9) discloses a "sand cooling and dust removal tower, casting sand treatment device and casting sand treatment method", which also belongs to the cooling process of the molding sand flow, and the residence time of the molding sand in the molding sand cooling and dust removal tower is relatively short , the energy conversion utilization rate is low, and a large amount of cooling water is also required in the cooling process, the cooling effect is poor and the energy consumption is high

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