无油真空泵其特点以及真空泵真的无油吗

  • Article source:Industry News
  • Website editor:小编
  • Reading volume:
  • Publication time:2019-06-11 21:28:17

无油真空泵是一种无需任何油作光滑就能运转作业的机械真空泵。它具有操作容易、保护便利、结构简略、不会污染环境等长处,无油真空泵耐用性好,是压缩,抽真空,两用真空泵,是一种应用规模非常广泛取得真空的基本设备。

  无油真空泵与油泵相比真空度低,抽气量小,但体积小巧,移动便利,易于装置,保护简略,不产生油烟,不污染环境,尤其在要求较高的实验室运用较好。也是实验室最常备的设备之一。

  因而在选购东莞无油真空泵时要先确定要求作业的真空度,不然达不到抽真空的要求,就会达不到作业要求。其次是无油真空泵抽气速率,选型时就要稍大于所需求的抽气速率,假如需求的真度高,而选的真空泵就要高于需求的真空度,这样就能更好的满足需求。最后看抽取的气体有无腐蚀性,有腐蚀的气体会腐蚀泵,必须要用特殊的材质才干满足需求。

    由无油真空泵的定义得知, 为满足杰出的环境,其抽气腔是无油的。但机械传动部分还需油类光滑, 例如多级无油真空泵、爪型泵和螺杆型干式泵等。其传动齿轮的轴承都需求光滑。利用迷宫式密封结构, 去阻隔泵腔和齿轮箱等部位, 比较简略的方法是在泵腔和需求光滑的部位之间充入枯燥的惰性气体, 或装置密封圈。

  必定要有杰出的防返流办法才行,大部分无油真空泵在低压下运用,而迷宫式结构能防止光滑油进入泵腔, 但有可能使气体经过, 由于齿轮箱中的气体压力不受约束, 假如齿轮箱内的气体压力大于泵腔内的压力, 有压力梯度存在就会出现齿轮箱内油蒸汽向泵腔内的扩散。因而对无油真空泵的结构设计要好好考虑, 将齿轮箱中的油池面上,进行减压预抽, 控制齿轮箱中的气体压力, 并经过唇形密封圈, 将油池与泵腔阻隔,防止污染被抽气体。


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