在攪拌與不銹鋼反應釜結合處(chu)密(mi)封(feng)的(de)選擇對于密(mi)封(feng)效果、使用(yong)(yong)安全、節約成本等都顯得(de)特別重要(yao)。填料密(mi)封(feng)價(jia)(jia)格較便宜，但只適合較普通(tong)的(de)使用(yong)(yong)條(tiao)件(jian)和物料;單(dan)機(ji)封(feng)價(jia)(jia)格適中，可以在大多數(shu)使用(yong)(yong)條(tiao)件(jian)下通(tong)用(yong)(yong);雙機(ji)封(feng)價(jia)(jia)格較貴，但在苛(ke)刻的(de)工作條(tiao)件(jian)下必須使用(yong)(yong)所以要(yao)明確密(mi)封(feng)選擇的(de)依(yi)據：

1.首先要明確密封選擇的(de)依據：是釜(fu)內(nei)的(de)工作(zuo)壓力，第二(er)是工作(zuo)物料的(de)性質。還(huan)有一個(ge)就(jiu)是設備的(de)工作(zuo)溫度。 　　

2.其次要明確不銹(xiu)鋼反(fan)(fan)應(ying)釜(fu)所用密(mi)封(feng)(feng)的(de)類(lei)別：反(fan)(fan)應(ying)釜(fu)所用密(mi)封(feng)(feng)即(ji)通常所說的(de)軸封(feng)(feng)有兩類(lei)，是填(tian)料密(mi)封(feng)(feng)，第二(er)是機(ji)(ji)(ji)械密(mi)封(feng)(feng)，機(ji)(ji)(ji)械密(mi)封(feng)(feng)又分為單機(ji)(ji)(ji)封(feng)(feng)(即(ji)單端面機(ji)(ji)(ji)械密(mi)封(feng)(feng))和雙(shuang)機(ji)(ji)(ji)封(feng)(feng)(即(ji)雙(shuang)端面機(ji)(ji)(ji)械密(mi)封(feng)(feng))，單機(ji)(ji)(ji)封(feng)(feng)全套(tao)還包(bao)括(kuo)水(shui)夾套(tao)，雙(shuang)機(ji)(ji)(ji)封(feng)(feng)則較(jiao)為復雜，除水(shui)夾套(tao)(必(bi)須有循環冷卻水(shui))外，還包(bao)括(kuo)配套(tao)的(de)支架(jia)、平(ping)衡罐等。 　

　3.如(ru)何(he)選(xuan)擇(ze)合(he)適的(de)密(mi)封：在(zai)常溫(wen)常壓，物(wu)料(liao)沒有揮發性也不易(yi)(yi)燃(ran)易(yi)(yi)爆(bao)的(de)使用(yong)(yong)條(tiao)件下，要選(xuan)擇(ze)填(tian)料(liao)密(mi)封;在(zai)壓力小于(yu)4公(gong)斤，物(wu)料(liao)的(de)易(yi)(yi)揮發性和(he)(he)易(yi)(yi)燃(ran)易(yi)(yi)爆(bao)性一般的(de)使用(yong)(yong)條(tiao)件下，就要選(xuan)擇(ze)單機封;在(zai)工作(zuo)壓力很過(guo)4公(gong)斤(但要小于(yu)10公(gong)斤)，物(wu)料(liao)的(de)易(yi)(yi)揮發性和(he)(he)易(yi)(yi)燃(ran)易(yi)(yi)爆(bao)性很強(qiang)的(de)使用(yong)(yong)條(tiao)件下，則必須選(xuan)擇(ze)雙機封。 　　

4.各(ge)種密封(feng)的優(you)缺(que)點：填料密封(feng)價(jia)(jia)格較(jiao)(jiao)便宜(yi)，但(dan)只適(shi)(shi)合較(jiao)(jiao)普通(tong)的使用(yong)條(tiao)(tiao)件和物料;單機封(feng)價(jia)(jia)格適(shi)(shi)中，可以在大多數使用(yong)條(tiao)(tiao)件下通(tong)用(yong);雙機封(feng)價(jia)(jia)格較(jiao)(jiao)貴，但(dan)在苛刻的工(gong)作條(tiao)(tiao)件下必(bi)須使用(yong)。

On the choice of mixing and sealing in reaction kettle attaches to the sealing effect, use safety, and cost savings appear particularly important.1. First of all, the basis of a clear seal choice: the first is the working pressure inside the kettle, the second is the nature of the work material.Another is the working temperature of the equipment.2. Secondly, we must make clear the category of stainless steel used in the reaction kettle seal: the shaft seal used in reaction kettle seal known as there are two kinds, the first is packing seal, the second is the mechanical seal, mechanical seal is divided into single seal (that is, the single mechanical seal) and double machine (i.e., double mechanical seal), single machine complete set also includes water jacket, double machine seal is more complex, in addition to the water jacket (must have a circulating cooling water), also include supporting bracket, tank, etc.3. How to choose the suitable seal: at atmospheric pressure, no volatile and flammable and explosive materials under the conditions of use, should choose packing seal;In pressure is less than 4 kg, volatile and flammable and explosive materials easily under general conditions of use, will choose single seal;In the pressure of work more than 4 kg (but less than 10 kg), volatile and flammable and explosive materials easily under the condition of the use of the strong, must choose double machine.4. The advantages and disadvantages of all kinds of sealing: packing seal the cheapest price, but only for the use of the most common conditions and materials;Single price moderate, gm can be used in most condition;Double machine most expensive, but must be used under harsh working conditions.