爐(lu)門框架采用(yong)槽鋼制作,側板(ban)(ban)和底(di)板(ban)(ban)采用(yong)Q235鋼板(ban)(ban)焊接(jie),結構(gou)牢固可靠,不(bu)易變形和翹曲,整(zheng)體強度好。
爐門升降為電動葫蘆驅動。箱式預熱爐廠家在爐門上有一斷路裝置,該裝置與輪軸連鎖,當爐門打開時即切斷加熱元件電源以保證操作人員安全。爐門上裝有調節式密封機構,有效使爐門密封。在爐頂上有一熱電偶孔,在使用時將熱電偶插入爐膛通過電爐控制柜來控制爐膛工作溫度。
控(kong)制(zhi)系統:主控(kong)系統控(kong)制(zhi)柜(ju)采用國際流行立式組合柜(ju)。控(kong)制(zhi)柜(ju)外(wai)表(biao)噴(pen)涂電(dian)(dian)腦色(se)或淺駝(tuo)色(se)。電(dian)(dian)控(kong)面(mian)板上(shang)裝有電(dian)(dian)流表(biao)、電(dian)(dian)壓表(biao)、溫度控(kong)制(zhi)儀及控(kong)制(zhi)開關等。
溫(wen)度(du)(du)控(kong)(kong)制(zhi)(zhi)(zhi)主回路(lu)采用可(ke)控(kong)(kong)硅(gui)(gui)過(guo)零(ling)調(diao)功(gong)觸發,可(ke)控(kong)(kong)硅(gui)(gui)采用風冷形式,設有過(guo)載、過(guo)熱及過(guo)流保護(hu)(hu)等功(gong)能(neng)。溫(wen)度(du)(du)控(kong)(kong)制(zhi)(zhi)(zhi)儀表選用先進的上海國龍智能(neng)高(gao)精度(du)(du)數顯PID自整定型儀表,控(kong)(kong)制(zhi)(zhi)(zhi)精度(du)(du)±1℃。該溫(wen)度(du)(du)控(kong)(kong)制(zhi)(zhi)(zhi)配(pei)有熱電偶(ou)修(xiu)正功(gong)能(neng)、功(gong)率限制(zhi)(zhi)(zhi)功(gong)能(neng)及超溫(wen)報警功(gong)能(neng)。當爐門打(da)開(kai)時自動切(qie)斷加熱主電路(lu),實現聯鎖保護(hu)(hu)。
爐(lu)溫(wen)記(ji)錄(lu)采用南(nan)通達華記(ji)錄(lu)儀,對升溫(wen)及保溫(wen)時(shi)間過程實時(shi)打印(yin)曲線(xian)、記(ji)錄(lu)溫(wen)度,同時(shi)對加(jia)熱主回路實現監控作用,有效地監視整個生產工藝。