WQG High Head Submersible Sewage Pump

1. High-lift sewage transport 

With the adoption of a high-efficiency hydraulic model and a high-power motor configuration, it can realize long-distance, high-drop sewage transportation, easily meeting the head requirements of working conditions such as deep well water lifting and high-altitude sewage discharge.

2. Anti-clogging sewage discharge operation 

The large-channel impeller and non-clogging flow channel design can efficiently transport sewage containing fibers, silt, and solid particles (particle size ≤ 1/3 of impeller diameter), avoiding impeller jamming and adapting to complex water quality discharge scenarios.

3. Submersible high-efficiency sewage discharge 

It can be directly submerged in sewage media and operates without the need for an additional pump room and water intake device, simplifying the installation process; underwater operation has low noise, and the motor is cooled by water, which improves operational stability.

4. Harsh working condition 

adaptation function The flow-through components are wear-resistant and corrosion-resistant, and can transport harsh media such as industrial wastewater, mine tunnel sewage, and construction site mud for a long time, making them suitable for a variety of complex sewage environments.

5. Automatic start/stop protection

It can be equipped with a liquid level controller to achieve automatic start and stop, and operate intelligently according to changes in sewage level, without the need for manual operation; it also has overload, overheat and leakage protection functions to ensure safe operation of the equipment.

1. Media Environment 

Suitable for conveying municipal sewage, industrial wastewater, construction site mud, mine tunnel sewage, and rural septic tank sewage; it can tolerate sewage containing fibers, silt, and solid particles (particle size ≤ 1/3 of impeller diameter), and the permissible pH range is 6~9. It is prohibited to convey strong acids, strong alkalis, high-concentration organic solvents, flammable and explosive media, and fluids containing sharp, hard particles (particle size > 1/3 of impeller diameter).

2. Temperature environment 

The temperature of the conveyed medium must be controlled between 0℃ and 40℃ to avoid freezing at low temperatures or damage to the mechanical seals at high temperatures; the operating environment temperature of the equipment is -10℃ to 55℃, and when installed outdoors, the electrical control system must be equipped with a sun-proof, rain-proof, and freeze-proof protective cover.

3. Installation Environment

Submersible installation is required, necessitating a water depth of ≥1.5m and an equipment immersion depth between 1.5m and 5m. The installation location must be far from areas with large accumulations of debris, and the underwater surface must be flat or have a fixed, dedicated mounting bracket to prevent tilting or settling. Suitable for underwater environments such as sewage tanks, sump pits, mine tunnels, and septic tanks, installation must ensure a distance of ≥0.5m between the equipment and the tank walls or bottom to prevent blockage of the suction inlet.

4. Electrical Environment 

Standard configuration includes a three-phase 380V/50Hz power supply; customizable three-phase 220V/60Hz and 440V/60Hz specifications are available for overseas markets. Leakage protection, overload protection, and phase loss protection switches are required. The electrical control cabinet must be placed in a dry, well-ventilated indoor environment to prevent moisture and dust contamination. Waterproof and wear-resistant rubber-sheathed cables must be used, and joints must be sealed for waterproofing. Cables must not be subjected to pressure, twisting, or damage.

1. Ultra-high head, worry-free long-distance transportation

Employing an optimized hydraulic model and a high-power, high-efficiency motor, its head far exceeds that of ordinary sewage pumps, easily handling working conditions such as deep well water lifting, high-altitude sewage discharge, and long-distance pipeline transportation, meeting the sewage lifting needs of complex scenarios.

2. Large channel anti-clogging design, suitable for complex water quality 

With its widened impeller flow channel and non-winding structure design, the impeller can smoothly transport wastewater containing fibers, silt, and solid particles (particle size ≤ 1/3 of the impeller diameter), effectively preventing impeller jamming, reducing the frequency of downtime due to malfunctions, and lowering maintenance costs.

3. Submersible operation, easy installation and low noise. 

It can be directly submerged in sewage media to work, eliminating the need to build a pump house and saving on civil engineering and space costs; underwater operation noise is less than 60dB, with no noise pollution; the motor is naturally cooled by water, resulting in more stable operation and a longer service life.

4. Wear-resistant and corrosion-resistant, suitable for harsh working conditions. 

The flow-through components are made of wear-resistant cast iron or corrosion-resistant stainless steel (304/316), which can withstand harsh media such as weak acids and alkalis, sandy sewage, and industrial wastewater, and are suitable for various complex scenarios such as municipal sewage, mine tunnels, and construction sites.

5. Intelligent protection, safe and reliable, no manual intervention required. 

It can be equipped with a liquid level controller to achieve automatic start and stop, and operate intelligently according to the sewage level without manual supervision; it has built-in overload, overheat, leakage and phase loss protection functions, and automatically shuts down when the equipment is abnormal, which greatly improves the safety of operation.

6. Compact structure and low maintenance cost 

The modular design of the whole machine makes the parts highly interchangeable; routine maintenance only requires lifting it out of the water to clean the impeller of debris, without the need for disassembly with professional tools, reducing the difficulty and time cost of operation and maintenance, and making it suitable for large-scale batch applications.

1. Municipal sewage network 

It is suitable for upgrading urban sewage pipe networks and sewage treatment plant influent, and can meet the sewage discharge needs of high terrain differences, efficiently transport domestic sewage containing silt and fiber, and ensure smooth pipe network.

2. Industrial wastewater treatment 

Covering industries such as chemical, metallurgical, papermaking, and food processing, it is used for the transportation and lifting of high-concentration organic wastewater and slag-containing wastewater. It is suitable for high-lift working conditions, can withstand weak acid and alkali media, and meets the pressure boosting and transportation needs of industrial wastewater treatment processes.

3. Drainage of mine tunnels 

Addressing the issues of water accumulation in underground mine tunnels and wastewater discharge from mineral processing, this device can operate in deep wells and high-drop environments, transporting turbid water containing slag and silt, thus solving the problems of difficult drainage and insufficient head in underground mines.

4. Dewatering at construction sites 

Used for draining accumulated water from building foundation pits, underground garages, and shield tunnels, it can efficiently transport sewage containing silt and mud, adapting to the high lift and large flow requirements of temporary sewage discharge at construction sites, and ensuring construction progress.

5. Deep well water extraction and farmland irrigation

It is suitable for scenarios such as deep well water extraction and farmland irrigation in rural areas. It can extract groundwater from deep wells and transport it to high-altitude reservoirs to meet the agricultural water supply needs of long distances and high elevation differences.

6. Flood control and drainage emergency response 

As an emergency drainage device, it is used for draining water from urban flooding and low-lying areas. Its high lift characteristic can quickly transport water to municipal pipe networks or external drainage channels to alleviate the impact of floods.

I. Pre-installation 

inspection Verify that the equipment model matches the operating parameters (head, flow rate, medium); test the motor insulation resistance (≥5MΩ), and check for cable damage and intact sealing joints. Clean up large debris and sharp particles in the installation area to prevent impeller blockage; confirm that the automatic coupling guide rail or hanger is securely installed, with a distance of ≥0.5m from the pool wall and bottom.

II. Water Inlet Installation and Commissioning

Automatic coupling installation: Slowly slide the equipment underwater along the guide rail, ensuring a tight fit between the coupling surfaces; for mobile installation, use steel wire ropes for hoisting, ensuring the equipment is vertically submerged, with the submersion depth controlled between 1.5 and 5 meters. Before initial startup, manually rotate the impeller to confirm there is no jamming; turn on the power and observe whether the outlet water pressure and current are within the rated range. If the water flow is weak, check for blockage in the inlet pipe or insufficient voltage. When using a level controller, adjust the high and low level control points to ensure the equipment can automatically start and stop according to the water level.

III. Operation Monitoring 

During operation, regularly observe the motor temperature (≤80℃) and current value, and listen to the operating sound of the equipment. No abnormal noises are normal. If a sudden drop in flow or current overload occurs, immediately stop the machine for inspection. Do not operate under no-load conditions. Frequent start-stop is strictly prohibited; the interval between two starts must be ≥5 minutes to prevent motor overheating and damage. When conveying high-concentration wastewater, shorten the operating cycle and clean the impeller regularly.

IV. Shutdown and Maintenance

Normal shutdown: First, disconnect the power supply. After the impeller has completely stopped, lift the equipment off the water surface using guide rails or a hanger. Clean any entangled materials and silt from the impeller and pump body flow channels, and check for wear on the seals. Long-term shutdown: Drain the water from the pump chamber, disassemble the impeller for cleaning and maintenance; dry the cable, wind it up, and store it. Place the equipment in a dry, ventilated place, avoiding exposure to direct sunlight, rain, and impacts.

V. Safety Precautions 

Underwater operations are strictly prohibited from involving electrically powered equipment; during maintenance, power must be disconnected and a "Do Not Operate" warning sign must be displayed to prevent electric shock. After handling corrosive media, the pump body surface must be rinsed with clean water and the anti-corrosion coating should be applied promptly; the electrical control cabinet must be kept dry to avoid short circuits caused by a humid environment.