1. According to the overflow part: ⑴ plunger, piston type ⑵ mechanical diaphragm type ⑶ hydraulic diaphragm type

2. According to the driving mode: ⑴ motor drive ⑵ electromagnetic drive

3. According to the working mode: ⑴ reciprocating type ⑵ rotary type ⑶ gear type

4. According to pump characteristics (1) extra large base (2) large base (3) medium base (4) small base (5) microcomputer base.

Other classification methods: electric control type, pneumatic control type, thermal insulation type, heating type, high viscosity type, etc