Air enters the desiccator through an annularinlet channel, which is covered by a strip of Polytetrafluorethylene PTFE coated wire mesh to prevent the ingress of rain, dust, insects, etc.
空气进入干燥器之后需通过环形通道，环形通道采用聚四氟乙烯涂层，防止雨水、灰尘和昆虫等进入。
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Results show that with the same oil amount, the new oil supply style needs a lower gas velocity in the inlet to shape the annular flow, and the oil drops will not appear in air flow.