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羅茨真空泵機組 |
 羅茨水環真空機組是以羅茨泵為主泵，以水環泵為前級泵串聯而成的。羅茨水環真空機組選用水環泵作為前級泵比其它真空泵更為有利，它克服了單臺水環泵使用時極限壓力差（機組的極限壓力比水環泵有很大的提高），在一定壓力下抽氣速率低的缺點，同時保留了羅茨泵能迅速工作，有較大抽氣速率的優點。尤其能夠適應抽除大量的可凝性蒸汽，特別是當氣鎮油封機械真空泵排除可凝性蒸汽能力不夠，或使用的溶劑能使泵油惡化而影響性能，或者是真空系統不允許油污染的時候更為明顯。當配有防爆電機及電器時并遵守相應的無危險的規則下,還可抽除易燃易爆的氣體。因此羅茨泵-水環泵機組廣泛地用于化工行業中的真空蒸餾、真空蒸發、脫水結晶；食品行業中的冷凍干燥；醫藥工業的真空干燥；輕紡工業的滌綸切片；高空模擬試驗等的抽真空系統中。Roots water ring vacuum unit is composed of roots pump and water ring pump in series. Roots water ring vacuum unit is chosen as the backing pump water ring pump more advantageous than other vacuum pump, it overcomes the single water ring pump when using the limit pressure difference (extreme pressure of the unit has greatly improved than water ring pump), a disadvantage of low extraction rate under certain pressure, while retaining the roots pump can work quickly, has the advantages of larger extraction rate. In particular, it can be adapted to remove a large number of condensable steam, especially when the gas sealing mechanical vacuum pump is not enough to remove condensable steam, or the use of solvents can make the pump oil deterioration and affect the performance, or the vacuum system does not allow oil pollution when more obvious. When equipped with explosion-proof motor and electrical appliances and comply with the corresponding non-dangerous rules, but also can be removed flammable and explosive gas. Therefore, roots pump-water ring pump unit is widely used for vacuum distillation, vacuum evaporation and dehydration crystallization in the chemical industry. Freeze-drying in the food industry; Vacuum drying in pharmaceutical industry; Polyester chips for light industry; High altitude simulation test in the vacuum pumping system. |