-Micro-pump is powered miniature DC motor drive, drive internal mechanical eccentric eccentric movement, driven by an eccentric motion within the diaphragm reciprocates. Whereby the pump chamber fixed volume of atmosphere compression (compression suction slot is closed, the exhaust slot is shaped to open slightly positive pressure), stretching (compressed exhaust slot is closed, a negative pressure sucking 
mouth open up), the pumping air flow intakes with the exterior atmospheric pressure difference, at a pressure difference, the gas pressure (suction) into the pump chamber, and discharged from the exhaust port.
-Micro-pump is principally used for medicine, gas analysis sampling, instrumentation and other fields. Dc Vacuum Pump Completely maintenance-free, no oil pump, do not pollute the transmission medium.
-Small, stable and reliable, hand-kept instrument for pump-priming, low noise, low power consumption. Especially -appropriate for high detrimental environmental requirements.