Negative pressure sealing at the fan end
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What does a negative pressure seal at the fan shaft end look like? {:3_46:}
Fans come in various types with different structures; it would be best to send a video or provide detailed instructions to facilitate discussion. There should be a schematic diagram of the equipment; taking a look at it will make it clear, for reference.
C:\Users\gong\Desktop\WeChat Pictures_20220423153235.jpg
This post was last edited by Mr. Gong on 2022-4-23 at 15:42; see the image. The rear shaft seal is connected to the air inlet via a tube, and is sealed by the negative pressure at the air inlet. 13472709938.
This type of structure is something I’ve seen for the first time – it connects the gas leaking from the shaft seal to the inlet through a pipe, allowing the leaked gas to be returned to the inlet using pressure differences. If there is sufficient negative pressure at the inlet, operation is possible even without a seal; in that case, a regular seal will suffice. It works on the same principle as the sealing mechanism used when shutting down centrifugal pumps: lol
Correct answer: lol:lol:lol