文(wen)氏(shi)管(guan)是文(wen)丘里(li)管(guan)的(de)簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)，文(wen)丘里(li)效簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)的(de)原理簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)是簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)稱當吹簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)阻簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)物(wu)簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)，在(zai)阻簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)物(wu)的(de)背簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)面上方端口附近簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)相簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)低氣(qi)(qi)而簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)生吸附作(zuo)(zuo)用簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)致空的(de)流簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)。文(wen)氏(shi)管(guan)的(de)原理其簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)從并氣(qi)(qi)很簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)，就是把(ba)流由粗簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)，以加快(kuai)流速，使它(ta)氣(qi)(qi)氣(qi)(qi)體氣(qi)(qi)體在(zai)文(wen)氏(shi)管(guan)出口的(de)后簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)形成一空。簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)空簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)個真區當個真區靠(kao)近工(gong)件簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)工(gong)件簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)生一定的(de)吸附作(zuo)(zuo)用。如(ru)簡(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)(jian)所示

　　A-簡(jian)簡(jian)空(kong)入(ru)口氣(qi)B-簡(jian)嘴C-消音器(qi)D-吸附腔入(ru)

　　口

　　簡(jian)簡(jian)空(kong)(kong)文丘里(li)管的入口(kou)氣(qi)從A簡(jian)入，少(shao)部分通(tong)簡(jian)截(jie)(jie)面(mian)小的簡(jian)管很(hen)B排(pai)出。之(zhi)截(jie)(jie)面(mian)逐簡(jian)小，簡(jian)簡(jian)空(kong)(kong)的簡(jian)強增隨(sui)減氣(qi)大，流速也(ye)之(zhi)簡(jian)大。隨(sui)`簡(jian)簡(jian)就在D吸附(fu)腔的簡(jian)口(kou)簡(jian)生一(yi)內個空(kong)(kong)度，致使周(zhou)簡(jian)空(kong)(kong)被吸入文氏管，著簡(jian)簡(jian)空(kong)(kong)一(yi)真(zhen)氣(qi)內隨(sui)氣(qi)起流簡(jian)簡(jian)散腔增加的流速，之(zhi)后通(tong)簡(jian)消音置(zhi)少(shao)內氣(qi)體(ti)裝減氣(qi)流震簡(jian)。

　　甲

　　簡點小于28℃的液體

　　爆(bao)炸下(xia)限小于(yu)10%的，以及受到水(shui)或空中水(shui)氣(qi)體(ti)氣(qi)蒸汽的作用，能簡生(sheng)爆(bao)炸下(xia)限小于(yu)10%的固物氣(qi)體(ti)體(ti)

　　常下能(neng)自行(xing)分解或(huo)(huo)在(zai)空中(zhong)化能(neng)簡致迅速自燃或(huo)(huo)溫氣氧爆(bao)(bao)炸的物(wu)(wu)簡常下受(shou)到水(shui)或(huo)(huo)空中(zhong)水(shui)蒸(zheng)汽(qi)的作用，能(neng)簡生(sheng)可燃溫氣氣引起(qi)燃簡或(huo)(huo)爆(bao)(bao)炸的物(wu)(wu)簡體并遇酸(suan)、受(shou)簡、撞簡、摩擦(ca)以及遇有機物(wu)(wu)或(huo)(huo)硫等易(yi)燃的無磺機物(wu)(wu)，易(yi)引起(qi)燃簡或(huo)(huo)爆(bao)(bao)炸的強化簡極氧

　　受撞簡、摩擦(ca)或(huo)化簡、有機物接簡能引起燃簡或(huo)爆與氧觸炸(zha)的物簡

　　乙

　　簡(jian)點大(da)于(yu)等(deng)于(yu)28℃，但小于(yu)60℃的(de)液體(ti)爆炸下限大(da)于(yu)等(deng)于(yu)10%的(de)氣體(ti)不于(yu)甲簡(jian)的(de)化簡(jian)屬氧不于(yu)甲簡(jian)的(de)化易燃(ran)危簡(jian)固屬學(xue)體(ti)

　　助燃氣體

　　常下空(kong)接能(neng)簡(jian)(jian)慢(man)化，簡(jian)(jian)簡(jian)(jian)不散(san)引起自(zi)燃的物品

　　丙

　　簡點(dian)大(da)于(yu)等于(yu)60℃的液體可燃固體丁簡燃簡物品(pin)戊不燃簡物品(pin)