小型树脂砂铸造车间通风除尘的改进措施

介绍了树脂砂铸造工艺及其优缺点,分析了该类铸造车间的熔化工部、造型工部、制芯工部、砂处理工部、清理工部在通风除尘方面存在的问题,并提出了相应的改进措施:厂房应位于最小频率风向的上风侧,厂房主要朝南北向;铸造车间除设有局部通风装置外,还要利用天窗排风或设置屋顶通风器;使固定作业工位处于车间内通风良好和空气相对洁净的地方;采用轻质材料或实体墙等设施,使砂处理、清理等工位区和车间其它部分隔开;炉料准备的秤量、送料及加料尽量采用机械化装置;散粒状的干物料最好采取密闭化、管道化、机械化和自动化输送;大量的粉状辅料宜采用密闭性较好的集装箱(袋)或料罐车输送;采用带称量装置的密闭混砂机。

Measures to Improve Ventilation and Dust-Catching of Small Resin Sand Foundry Shop

The resin sand casting process,its advantages and disadvantages were introduced. The problems with ventilation and dust catching existing in the melting section,molding section,core-making section,sand treating section and cleaning section of were analyzed,and relevant improving measures were proposed：the workshop should be placed on the windward side of the wind direction having the most low occurring frequency;the workshop should be south-north towards;the foundry shop should have not only local aerator,and should also have shop-top windows or shop-top ventilator to ventilate;the fixed operation position should be in the area where the ventilation is good and the air is relatively clean;use light material or solid walls to separate the sand treating section and cleaning section from other sections;use as possible mechanical equipments to conduct melting charge weighing,transporting and charging;use as possible sealed tube-type mechanical and automatic equipments to transport the dry loose particle-type materials ;large amount of powder-shaped auxiliary materials should be transported with container or bag, or tank car having good sealing property;use sand mixer having weighing apparatus.