TSXETZ410卡件全新原裝現(xiàn)貨供應(yīng)
tsxetz410卡件全新原裝現(xiàn)貨供應(yīng)
tsxetz410卡件全新原裝現(xiàn)貨供應(yīng)
重量配比是對原料倉下電子稱重皮帶秤和給料裝置進(jìn)行控制，根據(jù)電子稱重皮帶秤和給料裝置的理論流量，plc系統(tǒng)設(shè)定好原料的配比和總給料量，同時要考慮原料倉排列順序的關(guān)系。通過上位機通訊設(shè)定每個倉下設(shè)備的流量，待系統(tǒng)啟動后重量信號和速度信號送到二次儀表，通過放大a/d轉(zhuǎn)換，計算出瞬時流量和累積量，并顯示于現(xiàn)場儀表。儀表在將信號上傳給plc模塊。plc模擬量輸入模塊采集電子稱重皮帶秤和給料裝置的重量信號和速度信號，根據(jù)用戶設(shè)定的參數(shù)進(jìn)行自整定運算，如果設(shè)定值與現(xiàn)行值有偏差則plc模擬量模塊將針對需調(diào)節(jié)的設(shè)備輸出一個標(biāo)準(zhǔn)信號(4~20ma)給變頻器，變頻器接受到plc的信號后將實時改變設(shè)備的轉(zhuǎn)速，對于圓盤則使給料減少或增多，對于各調(diào)速稱則使物料流量減少或增多。從而使系統(tǒng)有一個穩(wěn)定狀態(tài)。當(dāng)燒結(jié)機正常運作一定時間后，混合料倉料位會因為燒結(jié)布料情況出現(xiàn)波動，當(dāng)帶車料層厚度穩(wěn)定后，plc根據(jù)混合料倉稱重傳感器測出的倉內(nèi)物料的物位對配料倉各下料口進(jìn)行流量調(diào)節(jié)，保證混合料槽進(jìn)出料平衡。混合料自動化主要是對兩次混合進(jìn)行加水控制和電氣連鎖。由于一次混合的目的在于混勻，所以根據(jù)一混前混合料的總量和一混前水分檢測儀的適時水分值按一定百分比進(jìn)行加水計算，通過控制一次混合家水管上電動調(diào)節(jié)閥來調(diào)節(jié)進(jìn)水流量。將配料倉各下料口現(xiàn)行值累加計算出去一混皮帶物料流量并共享給混合料自動加水控制系統(tǒng)，根據(jù)物料的總量和物料進(jìn)入一混前的含水百分比計算出需要給一混加多少水，為一混自動加水提供加水基準(zhǔn)。
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