旧砂气力吸送由于设备简单、占地面积小、密闭输送环境污染少、能除尘旧砂质量高和减少新砂用量等特有的优点深受中小型铸工车间广大技术人员和工人们的欢迎,直到如今安徽省仍有许多工厂坚持使用。但从大多数工厂使用的情况来看还存在不少问题。有的问题已经严重影响正常的生产,因此有必要进一步研究和改进。 Old sand pneumatic suction due to the simple equipment, small footprint, less confined transport environment pollution, high dust and sand can be used to reduce the amount of new sand and other unique advantages by the small and medium-sized castors workshop general technical staff and workers welcome until There are still many factories in Anhui Province nowadays. However, there are still some problems with the use of most factories. Some problems have seriously affected the normal production, so there is a need for further research and improvement.