我厂铸造车间有三条生产线,每条线的各造型机上面都有一个贮砂斗。混好的型砂(含有新砂、旧砂、膨润土、煤粉、水)经输送带依次放入各贮砂斗中。整个放砂过程现由三人随砂跑来跑去地控制着。为了节省人力,减轻劳动强度,实现放砂过程自动控制,我们首先试制了背压式气动探位装 I plant casting workshop has three production lines, each line of the molding machine has a storage bucket above. Mixed sand (including new sand, old sand, bentonite, coal, water) by the conveyor belt into the storage bucket in turn. The entire process of putting the sand is now controlled by three people running around with the sand. In order to save manpower, reduce labor intensity, to achieve automatic control of the process of putting sand, we first trial production of back-pressure pneumatic probe