在攪拌與不銹鋼反應(yīng)釜結(jié)合處密封的選擇對于密封效果、使用安全、節(jié)約成本等都顯得特別重要。填料密封價(jià)格較便宜，但只適合較普通的使用條件和物料;單機(jī)封價(jià)格適中，可以在大多數(shù)使用條件下通用;雙機(jī)封價(jià)格較貴，但在苛刻的工作條件下必須使用所以要明確密封選擇的依據(jù)：
1.首先要明確密封選擇的依據(jù)：是釜內(nèi)的工作壓力，第二是工作物料的性質(zhì)。還有一個(gè)就是設(shè)備的工作溫度。
2.其次要明確不銹鋼反應(yīng)釜所用密封的類別：反應(yīng)釜所用密封即通常所說的軸封有兩類，是填料密封，第二是機(jī)械密封，機(jī)械密封又分為單機(jī)封(即單端面機(jī)械密封)和雙機(jī)封(即雙端面機(jī)械密封)，單機(jī)封全套還包括水夾套，雙機(jī)封則較為復(fù)雜，除水夾套(必須有循環(huán)冷卻水)外，還包括配套的支架、平衡罐等。
3.如何選擇合適的密封：在常溫常壓，物料沒有揮發(fā)性也不易燃易爆的使用條件下，要選擇填料密封;在壓力小于4公斤，物料的易揮發(fā)性和易燃易爆性一般的使用條件下，就要選擇單機(jī)封;在工作壓力很過4公斤(但要小于10公斤)，物料的易揮發(fā)性和易燃易爆性很強(qiáng)的使用條件下，則必須選擇雙機(jī)封。
4.各種密封的優(yōu)缺點(diǎn)：填料密封價(jià)格較便宜，但只適合較普通的使用條件和物料;單機(jī)封價(jià)格適中，可以在大多數(shù)使用條件下通用;雙機(jī)封價(jià)格較貴，但在苛刻的工作條件下必須使用。
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.
