old sand meaning in English
旧砂
售砂
Examples
- However , the foundry plant of tsinghua university lacks old sand with high temperature and can not carry out test of cooling control
但因清华大学铸造厂缺乏温度较高的旧砂，以致无法进行降温控制效果的试验。 - The system controls water - spraying quantity through measuring old sand temperature and current of double disk engine , which makes old sand have low temperature and average moisture after cooling
系统是通过检测旧砂的温度以及双盘电机电流来控制喷水量，使经过冷却后的旧砂温度低水分稳定均匀。 - Double disk stir cooler can accelerate evaporating moisture for getting low temperature with strong stirring of scraper in short time through water feeding , blast and convulsions ; meanwhile , it has definite function of rebirth and mixing for old sand , which makes it become the best device for old sand treatment of clay sand system
双盘搅拌冷却机，能在短时间内在刮板的强烈搅拌下，通过加水鼓风抽风，促使水分蒸发以达到降温的目的，同时对旧砂有一定的再生混匀作用，使其成为对粘土砂系统旧砂进行冷却的最佳装置之一。 - 2 . there are three measuring positions for temperature transducer : inner sand temperature of double disk cooler ; testing sand temperature near feeding hopper can reflect low temperature condition of old sand ; the temperature of double disk cooler top can reflect inner temperature change of double disk ; therefore , it can estimate temperature change according to this change
2温度传感器的测量位置有三处： 1双盘冷却器内部砂温2进料口附近检测砂温，能够反馈旧砂降温情况3双盘冷却器顶部抽风口气温，反映双盘内气温变化情况，由此气温可大致判断双盘内砂温变化情况。 - This control system adopts creditable plc for real control ; it sends many simulating signals collected by old sand temperature of inlet , suction opening temperature of double disk , inner sand temperature of double disk , current of mainframe and current of fan ; meanwhile , the operation signal and switching value signal outputted by material movement transducer is inputted to switching value module of plc ; it gets evidence of water feeding after cpu account ; the operation result of cpu is outputted by switching value of plc to control unlock combination of coarse , middle and thin water feeding electromagnetically operated valve and then gets different water feeding quantity
该控制系统采用高可靠性的plc可编程序控制器进行实时控制，传感器所采集的入口旧砂温度双盘抽风口温度双盘内砂温主电机电流及鼓风机电流等模拟量信号直接输入plc的模拟量采集模块，同时加砂设备运转信号及加砂设备物料移动检测传感器发出的开关量信号输入plc的开关量模块，由cpu获取经运算而得到加水计算依据， cpu运算结果直接由plc的开关量输出控制粗中细加水电磁阀的开启组合，而得到不同的加水量。