Questions that are not understood.
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Why can bag filters operate properly under negative pressure but not under positive pressure?
It can also operate under positive pressure... but dust has a too great impact on the impeller... hehe··
The reasons are as follows: 1. The pressure loss under negative pressure is relatively low; 2. Negative pressure can provide effective protection for the fan; 3. Negative pressure allows for a certain level of air leakage; 4. The service life of the negative pressure bag is thereby extended