用废胶胆替代液料换向阀的隔膜夏兆勤（中国水产总公司淄博柴油机厂）树脂砂混砂机一般采用气动控制液料换向阀加入树脂和固化剂。由于该阀的操作使用比较频繁，而阀体中的隔膜必须在有一定压力的气体端和液料端做往复运动，来控制液料的换向加入，所以液料换向阀隔膜容易... Replacing the septum of liquid valve with waste rubber bushing Xia Zhaoqin (Zibo Diesel Engine Factory of China National Fisheries Corporation) Resin sand mixer usually uses pneumatic control liquid material directional valve to add resin and curing agent. As the valve is used more frequently, and the diaphragm in the valve body must reciprocate between the gas end and the liquid end with a certain pressure to control the commutation of the liquid material, so the liquid material reversing valve diaphragm is easy. .