LSWQB DC Brushed Ground Solar Pump

Model Interpretation:
L: Vertical/Centrifugal.
S: Brushed (You Shua) – Core motor type.
W: Wastewater/Impurity (Wu Ran) or Vortex (Wo Liu).
Q: Submersible/Clean Water (Qian Shui / Qing Shui).
B: Surface/Household (Biao Mian).

Core Form: Horizontal single-stage or double-stage centrifugal pump.
Core Difference: Brushed DC motor + cast iron/stainless steel pump body. It is usually equipped with 2-inch (approximately 50mm) inlet and outlet ports, larger than the LSPI series, and has a higher flow rate.
Power Range: Usually around 120W - 500W, with a moderate size.
Core Working Principle: Vortex/Centrifugal pressurization + brushed motor drive
The working logic of the LSWQB series is "simple, robust, and plug-and-play":
Brushed Motor Drive: Uses carbon brushes and a commutator to convert electrical energy into mechanical energy, driving the impeller to rotate at high speed. The structure is simple, and it can be directly connected to solar panels without complex electronic controllers.
Vortex/Centrifugal Pressurization: After the water flows into the pump body, it is thrown out by the high-speed rotating impeller. Some LSWQB models adopt a "vortex" design, allowing them to generate higher pressure at low flow rates, making them ideal for household water supply.
Direct Drive Characteristics: It has lower voltage matching requirements for solar panels. As long as the voltage reaches the motor's starting voltage, the pump will rotate; the intensity of sunlight directly controls the speed and flow rate.
Core Features: Economical, moderate pressure, simple maintenance

Feature Details
Extremely High Cost-Effectiveness: Core advantage. Compared to brushless motor pumps, brushed motors are less expensive. The LSWQB series is the best choice for large-scale popularization and low-cost renovation projects.
Strong Self-Priming Capability: As a surface pump, it has good self-priming capability (usually 5-8 meters), and can easily pump water from rivers, ponds, or shallow wells.
Wear-Resistant (some models): Some LSWQB models (such as the "Dirty Buster" version mentioned in the documentation) are designed to handle water containing trace amounts of impurities or sediment, making them more durable than ordinary clean water pumps.
Simple structure: No complex electronic components, easy to repair, or simply replace the carbon brushes to continue using it.

Typical Application Scenarios
The LSWQB series is ideal for rural households, small farms, and temporary water supply:
Household/Yard Water Supply:
Used for drawing domestic water and washing water from shallow wells or cisterns.
Small Vegetable Garden/Orchard Irrigation:
Used for small farms of a few acres, drawing water from nearby ditches or ponds for irrigation.
Drought Relief/Flood Drainage:
Used to drain accumulated water from fish ponds, basements, or low-lying areas.
Livestock Farming:
Used for flushing and providing drinking water for cattle, sheep, and pig pens.

Selection and Usage Suggestions:
Lifespan Limitation (Key):
Carbon Brush Wear: The biggest disadvantage of brushed motors is that the carbon brushes wear out. After several hundred to a thousand hours of continuous operation, the carbon brush wear gap increases, which can lead to increased noise and even failure to commutate and stop.
Suggestion: Suitable for intermittent operation. If you need a commercial project that requires long-term continuous operation, please be sure to choose a brushless series (such as LSQB).
Strictly Prohibit Dry Running:
Brushed motors have poor heat dissipation when running idle, and carbon brush friction generates high temperatures. It is absolutely forbidden to run the motor for a long time without water, otherwise, the motor will burn out quickly.
Voltage Matching:
Although the structure is simple, to protect the motor, it is recommended to install a simple anti-reverse diode between the solar panel and the pump to prevent reverse discharge from the battery panel at night from damaging the motor.

The LSWQB series is an "economical and durable tool" among solar-powered surface pumps. It's not as intelligent and long-lasting as brushless pumps, nor does it have the powerful output of high-power pumps, but it's cheap, easy to repair, and sufficient for many needs. If you only need to solve daily household water needs or irrigate a small plot of land, and want to spend the least amount of money, then the LSWQB series is a very practical choice.