上海压缩机厂铸造车间砂处理系统,新、旧砂均采用真空吸送。该套吸送系统经多年使用,性能良好,效率较高;存在的问题是管道磨损严重。系统管道原采用4英寸水煤气管(壁厚5毫米),管道虽然都是直管,但一般用6个月左右,管壁即被磨穿。因此,管道要经常焊补和更换,既浪费材料又浪费人力。 Shanghai Compressor Factory Foundry sand processing system, new and old sand are used vacuum suction. The set of suction system after years of use, good performance, high efficiency; the problem is serious pipeline wear. The original 4-inch system of gas water pipe (wall thickness 5 mm), although the pipes are straight, but generally about 6 months, the wall is worn through. Therefore, the pipeline should be often refilled and replaced, both waste materials and waste of manpower.