淺談關于配(pei)料稱的應用(yong)范圍前景

自動化(hua)工業(ye)生產的發展導致對自動定量給定控制(zhi)系(xi)統的需(xu)求日益增加。該系(xi)統可應(ying)用(yong)(yong)于(yu)冶金、建(jian)材、電力、化(hua)工、食品、飼(si)料(liao)(liao)等各(ge)行(xing)業(ye)中，在冶金行(xing)業(ye)可應(ying)用(yong)(yong)于(yu)燒結工藝;在建(jian)材行(xing)業(ye)可應(ying)用(yong)(yong)于(yu)對水泥生料(liao)(liao)的自動配料(liao)(liao);在電力行(xing)業(ye)，它可應(ying)用(yong)(yong)于(yu)鍋爐的定量供煤;在化(hua)工、食品和飼(si)料(liao)(liao)部(bu)門，失重(zhong)式(shi)(shi)喂料(liao)(liao)機價格(ge)，多種(zhong)原料(liao)(liao)的自動配料(liao)(liao)也需(xu)要它。目(mu)前我國這些行(xing)業(ye)所使用(yong)(yong)的控制(zhi)系(xi)統大都采用(yong)(yong)老式(shi)(shi)滑差(cha)調速、模(mo)擬(ni)電路控制(zhi)方式(shi)(shi)，所以該系(xi)統具有(you)較廣闊的應(ying)用(yong)(yong)前景(jing)。

失重稱的含義

通過(guo)靜態秤稱量(liang)(liang)(liang)(liang)(liang)完整(zheng)的(de)(de)(de)給(gei)(gei)(gei)料(liao)(liao)(liao)系(xi)統(tong)(料(liao)(liao)(liao)倉、給(gei)(gei)(gei)料(liao)(liao)(liao)機(ji)(ji)和(he)散狀物(wu)料(liao)(liao)(liao))及(ji)通過(guo)變速(su)電機(ji)(ji)或(huo)(huo)電振機(ji)(ji)控(kong)制(zhi)(zhi)散關物(wu)料(liao)(liao)(liao)的(de)(de)(de)卸料(liao)(liao)(liao)流(liu)量(liang)(liang)(liang)(liang)(liang)。物(wu)料(liao)(liao)(liao)(通過(guo)螺旋(xuan)、振動(dong)管或(huo)(huo)槽(cao))從系(xi)統(tong)卸下，失(shi)(shi)(shi)重(zhong)(zhong)(zhong)(zhong)(zhong)式喂料(liao)(liao)(liao)機(ji)(ji)哪家(jia)好，將(jiang)按每(mei)個單位時間(dv/dt)測量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)'失(shi)(shi)(shi)重(zhong)(zhong)(zhong)(zhong)(zhong)'與所需給(gei)(gei)(gei)料(liao)(liao)(liao)量(liang)(liang)(liang)(liang)(liang)(預(yu)(yu)設值)進行比較，實際(測量(liang)(liang)(liang)(liang)(liang))的(de)(de)(de)流(liu)量(liang)(liang)(liang)(liang)(liang)與期望的(de)(de)(de)(預(yu)(yu)設)流(liu)量(liang)(liang)(liang)(liang)(liang)之(zhi)間的(de)(de)(de)差異會通過(guo)給(gei)(gei)(gei)料(liao)(liao)(liao)控(kong)制(zhi)(zhi)器(qi)發生糾正信號，該控(kong)制(zhi)(zhi)器(qi)能自(zi)動(dong)調節給(gei)(gei)(gei)料(liao)(liao)(liao)速(su)度，從而在(zai)沒有(you)過(guo)程(cheng)滯后的(de)(de)(de)情況(kuang)下保(bao)持的(de)(de)(de)給(gei)(gei)(gei)料(liao)(liao)(liao)量(liang)(liang)(liang)(liang)(liang)。當(dang)料(liao)(liao)(liao)倉中測量(liang)(liang)(liang)(liang)(liang)的(de)(de)(de)重(zhong)(zhong)(zhong)(zhong)(zhong)量(liang)(liang)(liang)(liang)(liang)達到料(liao)(liao)(liao)倉低料(liao)(liao)(liao)位(重(zhong)(zhong)(zhong)(zhong)(zhong)新加(jia)料(liao)(liao)(liao))時，控(kong)制(zhi)(zhi)器(qi)將(jiang)給(gei)(gei)(gei)料(liao)(liao)(liao)系(xi)統(tong)按容(rong)積給(gei)(gei)(gei)料(liao)(liao)(liao)進行控(kong)制(zhi)(zhi)，然后料(liao)(liao)(liao)倉快速(su)重(zhong)(zhong)(zhong)(zhong)(zhong)新裝料(liao)(liao)(liao)(手動(dong)或(huo)(huo)自(zi)動(dong))，失(shi)(shi)(shi)重(zhong)(zhong)(zhong)(zhong)(zhong)控(kong)制(zhi)(zhi)器(qi)重(zhong)(zhong)(zhong)(zhong)(zhong)新動(dong)作(zuo)。在(zai)批稱量(liang)(liang)(liang)(liang)(liang)失(shi)(shi)(shi)重(zhong)(zhong)(zhong)(zhong)(zhong)系(xi)統(tong)中，設計與連續失(shi)(shi)(shi)重(zhong)(zhong)(zhong)(zhong)(zhong)系(xi)統(tong)相(xiang)似(si)，然而，失(shi)(shi)(shi)重(zhong)(zhong)(zhong)(zhong)(zhong)式喂料(liao)(liao)(liao)機(ji)(ji)報(bao)價，給(gei)(gei)(gei)料(liao)(liao)(liao)(批量(liang)(liang)(liang)(liang)(liang))

循環終重量(liang)的精度(du)要(yao)比實際(ji)的給(gei)(gei)料(liao)量(liang)控(kong)制更高。控(kong)制器通過向(xiang)變速驅動器提供(gong)高給(gei)(gei)料(liao)信號(hao)以完(wan)成(cheng)快速給(gei)(gei)料(liao)，然后轉換到低給(gei)(gei)料(liao)控(kong)制信號(hao)用于在批(pi)量(liang)結束時控(kong)制。

很多加工生產單位中(zhong)所使用(yong)的(de)設(she)備種類比較(jiao)多，而有的(de)設(she)備在啟動之后就(jiu)會產生比較(jiao)強(qiang)烈的(de)磁(ci)場，也會對(dui)周圍的(de)環境造成影(ying)(ying)響，針(zhen)對(dui)這樣的(de)情(qing)況(kuang)需要(yao)注意讓不同的(de)設(she)備之間(jian)保持適合的(de)距(ju)離(li)，以免(mian)電磁(ci)作用(yong)影(ying)(ying)響到失重秤(cheng)的(de)精度(du)。另外還要(yao)做(zuo)好接地，并不要(yao)強(qiang)烈的(de)電磁(ci)反應(ying)(ying)(ying)對(dui)設(she)備產生不好影(ying)(ying)響，平時(shi)在使用(yong)設(she)備供應(ying)(ying)(ying)物料時(shi)應(ying)(ying)(ying)該留(liu)意這些問題。

在進(jin)行物料加工(gong)的(de)(de)(de)(de)過(guo)程中(zhong)，如(ru)(ru)果(guo)加工(gong)場所中(zhong)粉塵過(guo)量，麗水失(shi)重(zhong)(zhong)(zhong)式喂料機，或者(zhe)是存(cun)在振動(dong)源，也會(hui)對失(shi)重(zhong)(zhong)(zhong)秤(cheng)的(de)(de)(de)(de)精度產生很大的(de)(de)(de)(de)影響，當設備運行一段(duan)時間之后，如(ru)(ru)果(guo)受到粉塵或者(zhe)是振動(dong)影響，在物料精度的(de)(de)(de)(de)控(kong)制上就容(rong)易出現問題，有的(de)(de)(de)(de)時候稱重(zhong)(zhong)(zhong)結果(guo)也會(hui)不穩定，所以(yi)平時工(gong)作(zuo)(zuo)人員需要(yao)注重(zhong)(zhong)(zhong)其(qi)生產環境的(de)(de)(de)(de)清潔工(gong)作(zuo)(zuo)，也要(yao)規避在振動(dong)較大的(de)(de)(de)(de)區域中(zhong)使用設備供應(ying)物料，這樣才(cai)可以(yi)保障設備的(de)(de)(de)(de)工(gong)作(zuo)(zuo)精度。