我厂铸工班生产表干型铸铁件时,使用的新砂为20～40目,过去采用铁丝网筛及排风扇处理旧砂,不仅劳动条件恶劣、粉尘严重,且筛出的砂子质量很差。为了改变这种状况,我们在嘉兴冶金机械厂的帮助下设计制造了一套5吨川、时风动吸送旧砂处理装置。此装置从1984年4月投入使用以来,效 Our factory cast table production of dry cast iron pieces, the use of new sand is 20 to 40 mesh. In the past, the use of wire mesh screen and exhaust fans to deal with old sand, not only the harsh working conditions, dust, and the quality of the screened sand is very poor. In order to change this situation, we have designed and manufactured a 5-ton gas flow sand suction device with the help of Jiaxing Metallurgical Machinery Plant. This device has been effective since it was put into use in April 1984