Resin sand processing system and work method thereof

Abstract

The invention discloses a resin sand processing system, which comprises a vibration crushing reclaimer, a feeding device, a sand-storing device, a sand-cooling device, a sand-reclaiming device, a cooling bed, a multifunctional feed bin, sand pneumatic conveying equipment, a compressed air unit, an air conditioning unit, a dedusting system and a sand mixer. The resin sand processing system has keypoints as follows: the sand-storing device has the same structure with the multifunctional feed bin, but different capacities; and each of the sand-storing device and the multifunctional feed bin comprises a temperature-adjusting bin, a feed inlet, a feed outlet, a valve, an air intake device and an air outlet. The feed inlet is hermetically and fixedly connected to the left side of the temperature-adjusting bin from left above; the air outlet is hermetically and fixedly connected to the right side of the temperature-adjusting bin from right above; the feed outlet is hermetically and fixedly connected to the middle of the lower part of the temperature-adjusting bin from below; the valve is arranged on the feed outlet; the air intake device penetrates through the lower part of the temperature-adjusting bin, and is fixed on the periphery of the lower part of the temperature-adjusting bin; and the air discharge part of the air intake device is positioned in the inner cavity of the temperature-adjusting bin.

Description

technical field [0001] The invention relates to sand processing equipment used in the field of casting technology, in particular to a resin sand processing system and a working method thereof. 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 a sand treatment system (including resin sand treatment system and green mold sand treatment s...

AI Technical Summary

Problems solved by technology

When the ambient temperature is above 25°C, the used sand treatment temperature is usually between 90°C and 150°C. In the original resin sand sand treatment system, the cooling bed is used to cool down the used sand, and the used sand is generally in the cooling bed. The residence time of the old sand is 5 to 10 minutes, which can reduce the temperature by about 5°C to 10°C. The cooling effect of the old sand is poor. In addition to the natural cooling of the old sand during the turnover process, when the old sand finally comes out of the cooling bed and enters the sand storage The temperature is usually still around 45°C to 55°C and can no longer be adjusted

At present, when the ambient temperature is higher than 25°C, there is no better way to effectively make the temperature of the used sand out of the sand storage below 35°C

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