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    The principle of the micro-pump can be divided into several key parts to clearly describe, the following is a detailed explanation of its principle:

    Self-priming principle:
    The micro-pump can absorb water without diversion, which means that it has a self-priming function.
    When the pumping pipe of the pump is air, the negative pressure (vacuum) formed when the pump is working is used, and the water pressure below the pumping port is come up under the action of atmospheric pressure, and then discharged from the drainage end of the pump.
    It is worth noting that although some micro-pumps also have self-priming capacity, their maximum self-priming height may only refer to the height of the water that can be lifted “after adding water”, not the true sense of self-priming.