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羅茨真空泵機(jī)組 |
 羅茨水環(huán)真空機(jī)組是以羅茨泵為主泵，以水環(huán)泵為前級(jí)泵串聯(lián)而成的。羅茨水環(huán)真空機(jī)組選用水環(huán)泵作為前級(jí)泵比其它真空泵更為有利，它克服了單臺(tái)水環(huán)泵使用時(shí)極限壓力差（機(jī)組的極限壓力比水環(huán)泵有很大的提高），在一定壓力下抽氣速率低的缺點(diǎn)，同時(shí)保留了羅茨泵能迅速工作，有較大抽氣速率的優(yōu)點(diǎn)。尤其能夠適應(yīng)抽除大量的可凝性蒸汽，特別是當(dāng)氣鎮(zhèn)油封機(jī)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(tǒng)不允許油污染的時(shí)候更為明顯。當(dāng)配有防爆電機(jī)及電器時(shí)并遵守相應(yīng)的無危險(xiǎn)的規(guī)則下,還可抽除易燃易爆的氣體。因此羅茨泵-水環(huán)泵機(jī)組廣泛地用于化工行業(yè)中的真空蒸餾、真空蒸發(fā)、脫水結(jié)晶；食品行業(yè)中的冷凍干燥；醫(yī)藥工業(yè)的真空干燥；輕紡工業(yè)的滌綸切片；高空模擬試驗(yàn)等的抽真空系統(tǒng)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. |