当球磨机与分级机构成闭路磨矿时,采用联合给矿器,它的挖砂嘴磨损是严重的。给矿器与挖砂嘴是用螺钉连接。在使用上存在三个缺点:第一、螺钉容易磨损,需要停车紧螺钉或更换螺钉,影响运转率。第二、操作人员要经常检查,以防止因螺钉磨损而挖砂嘴掉落的危险。第三、使用周期短,每对挖砂嘴(双勺 When the ball mill and grading machine closed-circuit grinding, the use of joint to mine, and its mouth wear mouth is serious. Mines and digging nozzle is connected with a screw. There are three disadvantages in the use: First, the screws are easy to wear, you need to stop the screws or replace the screws, affecting the operation rate. Second, the operator should always check to prevent the danger of dropping the nozzle due to the screw wear. Third, the use of short cycle, each pair of dredging mouth (double spoon