Overview of the WQ/QG Cutter-Type Clog-Free Submersible Sewage Pump

The WQ/QG twin‑screw cutter‑type, high‑efficiency, non‑clogging submersible sewage pump is a new generation of wastewater‑pumping equipment designed and manufactured in accordance with national standards, drawing on advanced foreign technologies. This series of pumps features a simple structure, powerful sewage‑discharge capability, and high efficiency with energy savings. It can also be equipped with automatic control systems and self‑coupling installation kits, further enhancing the pump’s versatility and ensuring safer, more reliable operation.

Application Scope of WQ/QG Cutter-Type Clog-Free Submersible Sewage Pumps

1. Discharge of severely polluted wastewater from industrial and commercial sources;

2. Wastewater pumping station in the residential area;

3. Wastewater discharge from hospitals, hotels, and similar facilities;

4. Urban wastewater treatment plant drainage system;

5. Civil defense system drainage stations and water supply facilities of the municipal waterworks;

6. Exploration and auxiliary equipment for mining operations;

7. Biogas ponds in rural areas for agricultural irrigation;

8. Automatic water supply device;

9. Various livestock farms, slaughterhouses, septic tanks, and the like.

10. Municipal engineering and construction sites.

Product Features of the WQ/QG Cutter-Type Clog-Free Submersible Sewage Pump

Submersible sewage pumps offer numerous advantages, most notably their ability to be operated directly in water. However, in situations where trash racks are not installed or are difficult to install, conventional submersible sewage pumps often experience blockages caused by larger debris in the wastewater, leading to significant operational challenges for users. To address this persistent issue, our company has developed the WQ/QG dual‑cutter, high‑efficiency, non‑clogging submersible sewage pump. This pump not only retains all the benefits of standard submersible sewage pumps but also boasts the following distinctive advantages:

1. The S‑shaped double‑blade impeller can shred and efficiently convey sacks, plastic woven bags, canvas gloves, leather gloves, cotton‑thread knitted gloves, as well as everyday plastic bags, fabric, toilet paper, sanitary napkins, and cotton thread, completely preventing blockages of the pump and piping by debris in wastewater. During operation, there is no need to install costly trash‑removal or debris‑separation equipment.

2. The cutter head and cutting disc are made of high-quality, corrosion-resistant alloy steel and undergo special surface treatments, ensuring that their cutting edges possess both sufficient hardness and excellent corrosion resistance. As a result, they exhibit exceptional wear resistance and maintain sharpness over long periods.

3. The impeller passage dimensions and the pump housing flow passage dimensions are precisely matched, ensuring that shredded debris can pass through smoothly.

4. The unique arrangement of bearings and mechanical seals results in a very short shaft overhang, ensuring high shaft stiffness and strength. Consequently, shaft vibration is minimized, significantly reducing leakage from the mechanical seal; the shaft can also withstand substantial impact loads. Moreover, the bearings are fully immersed in the oil bath within the oil chamber, providing excellent lubrication and cooling, which ensures an extended service life even under heavy‑load operating conditions where the pump occasionally handles hard materials.

5. Both the pump side and the motor side are equipped with mechanical seals, providing reliable dual submersible shaft sealing for the motor. The oil in the oil chamber ensures adequate lubrication and cooling of the mechanical seals. The mechanical seal area on the pump side features a structure that fragments and expels debris, preventing its accumulation or deposition within the mechanical seal cavity and thereby safeguarding the seal’s normal operation.

6. Scraping grooves provided between all rotating and stationary flow‑path components effectively remove thin, resilient debris that may become entrapped between them, thereby preventing increased pump power consumption or stalling.

7. A dual-rail automatic coupling installation system can be optionally equipped to meet user requirements, providing significant convenience for installation and maintenance while eliminating the need for personnel to enter the sewage pit.

8. A fully automatic safety protection control cabinet can be optionally equipped to provide comprehensive protection against pump leakage, electrical leakage, overload, and overheating, thereby enhancing the product’s safety and reliability.

9. A float switch can be optionally equipped to automatically start and stop the pump in response to changes in liquid level, eliminating the need for dedicated supervision and ensuring extremely convenient operation.

Meaning of the Model Designation for WQ/QG Cutter-Type Clog-Free Submersible Sewage Pumps

Wenzhou

For example: WQ100-30QG

WQ/QG – High-efficiency, clog-free submersible sewage pump with a twin-screw cutter

100 - Flow rate (m³/h)

30 – Head (m)