1前言在原有潮型砂混砂系统中，为了稳定型砂质量，必须采用旧砂冷却设备、预混设备和混砂机等很多设备，因此，设备占用面积大，投资和运行成本高。为了解决这个问题，本公司引进了该系统，仅使用混砂用的真空混砂机就可进行从砂冷却到混砂的各项工作，得到性能稳定的型砂。本 1 Preface In the original sand-sand mixing system, in order to stabilize the sand quality, many equipments such as old sand cooling equipment, premixing equipment and sand mixing machine must be adopted. Therefore, the equipment occupies a large area with high investment and operation cost. In order to solve this problem, the company introduced the system, using only sand mixer with a vacuum sand mixer can be cooled from the sand to the sand work, get stable performance of the sand. this