Working Principle of Water Pumps in Robot Vacuums and Micro Motor Applications

With the rapid growth of smart home devices, robot vacuums have become an essential household cleaning tool. Among their core components, the water pump system plays a vital role, and the micro DC motor that drives the pump is the key technology behind it.

Role of Water Pump in Robot Vacuums

Robot vacuums are not only designed for dust collection but also rely on wet mopping to achieve deeper cleaning. The pump’s function is to deliver water from the water tank to the mop cloth in a precise and stable way, ensuring the mop stays properly moistened for better cleaning results.

Common Types of Water Pumps

1. Diaphragm Pump

   • Working Principle: Driven by a micro DC motor, the diaphragm moves back and forth to create negative pressure that draws in water and pushes it out through a check valve.

   • Features: Compact size, quick self-priming, stable flow rate – suitable for daily mopping.

2. Peristaltic Pump

   • Working Principle: A motor-driven roller compresses and releases the pump tube, pushing liquid in pulses for precise control.

   • Features: Bi-directional flow, corrosion resistance, accurate water output – widely used in premium robot vacuums and floor scrubbers that require precise water control or cleaning solution dosing.

Water Tank and Pipeline System

The water tank stores the cleaning liquid, connected to the pump through pipelines. A check valve prevents backflow, while the spray outlet distributes water evenly onto the mop. This ensures the mop maintains the right level of moisture.

Value of Micro Motors in Pump Systems

As a professional micro motor manufacturer with 20 years of expertise, Lihua Motor provides DC micro motors tailored for diaphragm and peristaltic pumps. Our motors offer:

• High efficiency and stability for continuous pump operation;

• Long lifespan and low noise, perfect for quiet home environments;

• Customizable solutions to meet different robot vacuum brands’ requirements for water flow, pressure, and dimensions.

Conclusion

The performance of a robot vacuum’s water pump system largely depends on its micro motor drive. Whether for diaphragm pumps or peristaltic pumps, Lihua Motor delivers reliable, efficient, and customizable micro motor solutions that empower smarter and cleaner home appliances.