Pump driving device

A pump driving device, comprising:

• a housing, which is hollow inside to form a first cavity, and has a first opening and a second opening respectively formed at two ends thereof;
• a shielding member, which is sleeved on an outer side of the first opening and forms a sleeving portion with the housing, with a slot provided at an outer side of a top of the shielding member for fixing a pump head, and a first space is reserved inside the shielding member on top of the housing;
• and
• a rotating member, configured to disturb an airflow by rotation within the first space, with the first cavity and the first space being in communication, wherein a first gap is formed between the housing and the shielding member at the sleeving portion, and a plurality of recessed channels are provided on an outer side of the sleeving portion of the housing;
• wherein gas enters the first cavity and the first space sequentially from the second opening, and is then discharged through the first gap and the plurality of recessed channels.