Now there are a variety of micro-pumps, micro-circulation pumps, micro-pumps, high-pressure miniature pumps, liquid sampling pumps, small pumps, self-priming pumps, DC pumps, diaphragm pumps, whether self-priming function, mainly see the following two points Self-absorption means: the pump suction pipe is the case of air, the use of negative pressure formed by the pump at atmospheric pressure will be lower than the water pressure on the pump up, and then discharged from the pump drain. This process does not require additional diversion guide. Pumps with this capability are called self-priming pumps. Some centrifugal or rotary vane pumps must be added to the pump chamber to form a closed environment before the pumps can operate in order to create negative pressure for water absorption purposes. For example, manual pumps used in rural areas. Pumps that do not have self-priming capabilities require a lot of hassle before each suction.
Suction level, with the pump power, flow, structure, etc. are related, but generally miniature pump self-priming suction is not easy to do higher, for example, a kind of micro-pump self-priming suction stroke can be achieved even higher The
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