I. Overview
Product Features
The QWB series submersible sewage sludge reflux pump is designed with micro head, high flow rate, and high efficiency. Its product features are:

Micro head, high flow - The QWB series submersible sludge reflux pump uses a stamped stainless steel submersible mixer as the pumping host, with a low impeller speed and a specific speed of 1600, so the unit has a large flow rate and extremely low head (up to 0.5 meters), which is very suitable for situations with extremely small liquid level drops and high flow requirements (such as the sludge reflux section in sewage treatment processes).

No blockage, high efficiency - Due to the large flow channel space between the reflux cylinder and the impeller, without narrow gaps, and the backward swept blades, various solid particles and even easily entangled fiber debris in the medium can be transported out without obstruction as long as they can enter the suction port of the sludge reflux pump; The hydraulic model is designed using CFS fluid analysis software, which has high hydraulic efficiency, and the impeller is directly connected to the advanced submersible motor, resulting in low mechanical losses, making the QWB series submersible sludge reflux pump unit highly efficient.

All stainless steel structure, strong corrosion resistance - The QWB series submersible sludge reflux pump adopts an all stainless steel structure, with a smooth and beautiful appearance, few components, and high standardization.

Product Usage
Mainly used in municipal engineering, sewage treatment and environmental protection engineering industries, it can be used to discharge and transport sewage with solid particles and muscle fibers. Sludge reflux. Wastewater.

Terms of Use
1. The altitude should not exceed 2000m, the maximum ambient temperature should be 50 ℃, the pH value of the medium should be between 3-12, the liquid density should not exceed 1150kg/m3, and long-term diving operation should generally not exceed a depth of 20m
2. During operation, the pump must not be lower than the minimum liquid level, refer to the "minimum liquid level" in the installation dimension diagram.
3. The rated voltage is 380V and the rated frequency is 50HZ. The motor can only operate normally when the deviation between the rated voltage and frequency is not greater than ± 5%.
4. The maximum diameter of solid particles passing through the pump shall not exceed 50% of the discharge diameter of the pump body

rotation direction
From the pump outlet, the impeller rotates counterclockwise.
Model Description

2、 Performance parameter table of QWB series submersible sludge reflux pump

3、 Performance Curve of QWB Series Submersible Sludge Reflux Pump

4、 Installation diagram and dimension diagram of QWB series submersible sludge reflux pump

5、 Installation diagram of QWB series submersible sludge reflux pump