當(dang)按下DVC真空上(shang)料(liao)機開/關鍵時(shi)(shi)(shi),真(zhen)(zhen)(zhen)空(kong)(kong)泵(beng)(beng)產生(sheng)負壓,同(tong)時(shi)(shi)(shi)料(liao)(liao)(liao)(liao)(liao)斗(dou)的(de)(de)(de)放(fang)(fang)料(liao)(liao)(liao)(liao)(liao)門(men)(men)在氣(qi)缸(gang)的(de)(de)(de)推動下關閉,料(liao)(liao)(liao)(liao)(liao)斗(dou)中(zhong)產生(sheng)真(zhen)(zhen)(zhen)空(kong)(kong)。真(zhen)(zhen)(zhen)空(kong)(kong)加料(liao)(liao)(liao)(liao)(liao)機(ji)(ji)在真(zhen)(zhen)(zhen)空(kong)(kong)下形成(cheng)一股氣(qi)流,在這股氣(qi)流的(de)(de)(de)作用下,被輸送的(de)(de)(de)物料(liao)(liao)(liao)(liao)(liao)經軟管被輸送到真(zhen)(zhen)(zhen)空(kong)(kong)料(liao)(liao)(liao)(liao)(liao)斗(dou)中(zhong),一定時(shi)(shi)(shi)間(jian)(jian)后負壓口(kou)換向(xiang),不(bu)產生(sheng)真(zhen)(zhen)(zhen)空(kong)(kong),同(tong)時(shi)(shi)(shi)料(liao)(liao)(liao)(liao)(liao)斗(dou)的(de)(de)(de)放(fang)(fang)料(liao)(liao)(liao)(liao)(liao)門(men)(men)在氣(qi)缸(gang)的(de)(de)(de)推動下啟動,真(zhen)(zhen)(zhen)空(kong)(kong)加料(liao)(liao)(liao)(liao)(liao)機(ji)(ji)真(zhen)(zhen)(zhen)空(kong)(kong)消失,物料(liao)(liao)(liao)(liao)(liao)從放(fang)(fang)料(liao)(liao)(liao)(liao)(liao)門(men)(men)自(zi)動放(fang)(fang)入受料(liao)(liao)(liao)(liao)(liao)設備中(zhong)(如混(hun)合(he)機(ji)(ji)、制粒機(ji)(ji)等),同(tong)時(shi)(shi)(shi)儲存(cun)在氣(qi)包空(kong)(kong)氣(qi)中(zhong)的(de)(de)(de)壓縮(suo)空(kong)(kong)氣(qi)反吹過(guo)濾器(qi),過(guo)濾器(qi)自(zi)動清洗(xi);一定時(shi)(shi)(shi)間(jian)(jian)后,重(zhong)新換向(xiang),真(zhen)(zhen)(zhen)空(kong)(kong)泵(beng)(beng)產生(sheng)真(zhen)(zhen)(zhen)空(kong)(kong),放(fang)(fang)料(liao)(liao)(liao)(liao)(liao)門(men)(men)關閉,真(zhen)(zhen)(zhen)空(kong)(kong)加料(liao)(liao)(liao)(liao)(liao)機(ji)(ji)再次加料(liao)(liao)(liao)(liao)(liao),周而復(fu)始,物料(liao)(liao)(liao)(liao)(liao)被源源不(bu)斷(duan)地(di)送入受料(liao)(liao)(liao)(liao)(liao)設備中(zhong)。