Introduction to the Features and Functions of Lishida QJ All-Stainless Steel Deep Well Pumps
1. All-Stainless Steel Construction with Superior Corrosion Resistance
The Lishida QJ deep well pump features an integral casting made of 304 stainless steel. Core components—such as the pump body and shaft—are all stainless steel, offering exceptional resistance to acids, alkalis, and corrosion. It is suitable for water environments containing chloride ions or characterized by high salinity or unstable pH levels. Its wear-resistant design handles water sources with high sand content, extending the pump's service life.
2. High Efficiency, Energy Saving, and Stable Performance
Hydraulic Optimization: Utilizes a multi-stage centrifugal impeller design, achieving a maximum head of 250 meters and a flow rate of 15 m³/h, meeting needs for deep-well extraction and high-volume water supply.
Energy-Efficient Motor: Equipped with a high-efficiency submersible motor that improves energy efficiency by over 15% compared to standard pumps, reducing long-term operating costs.
Floating Impeller Design: Features a fully floating impeller design that resists sand and clogging.
3. Compact Structure and Convenient Installation
Integrated Design: The motor and pump are directly connected; the unit is compact and lightweight, eliminating the need for a pump house and allowing for direct submersion in the well.
Flexible Installation: No special requirements for well casings or discharge pipes; compatible with steel, plastic, or rubber hoses.
4. Wide Range of Applications
Application Areas: Suitable for farmland irrigation, water supply in high-altitude or mountainous regions, drainage for industrial and mining enterprises, and urban emergency water supply.
Environmental Adaptability: Operates stably in water temperatures ranging from -20°C to 100°C; high-temperature resistant versions can extract geothermal water.
5. Safety, Reliability, and Low Maintenance
Multiple Protection Measures: The motor shaft end features a dual oil seal and sand-flinging ring structure to prevent sediment intrusion; a built-in check valve prevents water hammer shock when the pump stops.
6. Intelligent Control and Long Service Life
Compatibility: Supports variable frequency control, automatically adjusting rotational speed based on water demand to save energy and protect the motor.
Durability: Key components undergo anti-corrosion treatment and high-strength testing, with a design life exceeding 10 years. Featuring corrosion resistance, high efficiency, energy savings, and ease of installation as its core advantages, the Lishida QJ all-stainless steel deep-well pump is an ideal solution for deep-well water supply, industrial drainage, and pumping operations in specialized environments.











