The working principle of electric water pump for bottled water is mainly to trigger the motor to drive the centrifugal pump through the sensor, use centrifugal force to pump water out, and stop automatically when the preset conditions are met. The specific principle can be divided into the following points:
Starting mechanism: When the user presses the water outlet button or opens the valve, the sensor (such as a touch switch or a water flow sensing device) detects the operation signal and starts the motor immediately. For example, in the manual button pressing mode, the circuit connects the motor power supply; in the automatic sensing mode, the sensor triggers the water pump to run through an electronic signal.
Pumping process: The motor drives the centrifugal pump impeller to rotate at high speed, generating centrifugal force to suck water from the bucket into the pump body and transport it to the water outlet through the pipeline. This process is similar to the principle of a common centrifugal pump. When the impeller rotates, the water flow is accelerated and thrown to the outer edge of the pump body, forming a pressure difference to achieve continuous pumping.
Automatic stop function: Some water pumps are equipped with a water level sensor or a time control module. When the water level reaches the preset height or a stop signal (such as closing the valve) is detected, the circuit is disconnected and the motor stops working. For example, a trigger chip (such as SN74LVC1G79) is used to control the start and stop cycle of the water pump to ensure a balance between pumping efficiency and energy saving.
Safety and filtration: To ensure water quality, some models include filtering devices (such as activated carbon and PP cotton) to purify water during the pumping process [5. At the same time, the circuit design usually includes lithium battery charging management (such as XT4052 chip) and anti-leakage protection to avoid safety hazards.
