无油真空泵选型注意考虑以下因素

  • Article source:Industry News
  • Website editor:莱诺真空泵
  • Reading volume:
  • Publication time:2021-02-23 08:30:04

无油真空泵选型注意考虑以下因素:

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(1)、泵的工作压强满足真空设备的极限真空及工作压强要求。

(2)、泵的工作点。有一定的工作压强范围.

(3)、泵在其工作压强下,应排走真空设备工艺过程中产生的全部气体量。

(4)、真空泵机组。由于真空泵有选择性抽气,需要几种泵组合起来,互相补充才能满足抽气要求。有的真空泵不能在大气压下工作,需要预真空;有的真空泵出口压强低于大气压,需要前级泵,故都需要把泵组合起来使用。

(5)、真空设备对油污染的要求。若设备严格要求无油时,应该选各种无油泵,如:水环泵、分子筛吸附泵、溅射离子泵、低温泵等。如果要求不严格,可以选择有油泵,加上一些防油污染措施,如加冷阱、障板、挡油阱等,也能达到清洁真空要求。

(6)、了解被抽气体成分,气体中含不含可凝蒸气,有无颗粒灰尘,有无腐蚀性等。选择真空泵时,需要知道气体成分,针对被抽气体选择相应的泵。如果气体中含有蒸气、颗粒、及腐蚀性气体,应该考虑在泵的进气口管路上安装辅助设备,如冷凝器、除尘器等。

(7)、真空泵排出来的油蒸气对环境的影响如何。如果环境不允许有污染,可以选无油真空泵,或者把油蒸气排到室外。

(8)、真空泵工作时产生的振动对工艺过程及环境有无影响。若工艺过程不允许,应选择无振动的泵或者采取防振动措施。

(9)、真空泵的价格、运转及维修费用


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