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old sand中文是什么意思

  • 舊砂
  • 售砂

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  • 例句與用法
  • However , the foundry plant of tsinghua university lacks old sand with high temperature and can not carry out test of cooling control
    但因清華大學(xué)鑄造廠缺乏溫度較高的舊砂,以致無法進(jìn)行降溫控制效果的試驗(yàn)。
  • 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
    系統(tǒng)是通過檢測舊砂的溫度以及雙盤電機(jī)電流來控制噴水量,使經(jīng)過冷卻后的舊砂溫度低水分穩(wěn)定均勻。
  • 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
    雙盤攪拌冷卻機(jī),能在短時間內(nèi)在刮板的強(qiáng)烈攪拌下,通過加水鼓風(fēng)抽風(fēng),促使水分蒸發(fā)以達(dá)到降溫的目的,同時對舊砂有一定的再生混勻作用,使其成為對粘土砂系統(tǒng)舊砂進(jìn)行冷卻的最佳裝置之一。
  • 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溫度傳感器的測量位置有三處: 1雙盤冷卻器內(nèi)部砂溫2進(jìn)料口附近檢測砂溫,能夠反饋舊砂降溫情況3雙盤冷卻器頂部抽風(fēng)口氣溫,反映雙盤內(nèi)氣溫變化情況,由此氣溫可大致判斷雙盤內(nèi)砂溫變化情況。
  • 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
    該控制系統(tǒng)采用高可靠性的plc可編程序控制器進(jìn)行實(shí)時控制,傳感器所采集的入口舊砂溫度雙盤抽風(fēng)口溫度雙盤內(nèi)砂溫主電機(jī)電流及鼓風(fēng)機(jī)電流等模擬量信號直接輸入plc的模擬量采集模塊,同時加砂設(shè)備運(yùn)轉(zhuǎn)信號及加砂設(shè)備物料移動檢測傳感器發(fā)出的開關(guān)量信號輸入plc的開關(guān)量模塊,由cpu獲取經(jīng)運(yùn)算而得到加水計算依據(jù), cpu運(yùn)算結(jié)果直接由plc的開關(guān)量輸出控制粗中細(xì)加水電磁閥的開啟組合,而得到不同的加水量。
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