Description
The QJB series submersible mixer is a vital piece of equipment in wastewater treatment processes. It is mainly used for mixing, agitation, and circulation in municipal and industrial sewage systems, and is also suitable for landscape water maintenance. By generating continuous flow, it improves water quality, increases oxygen content, and helps prevent the settling of suspended solids.
This mixer features a compact structure, low energy consumption, and easy maintenance. Its impeller is precision-cast or stamped, offering high thrust and smooth, anti-clogging performance. The streamlined design ensures efficient operation and aesthetic appearance. The QJB series is ideal for applications requiring solid-liquid mixing and agitation.
Sectional Drawing

Operating Conditions
To ensure proper performance, the submersible mixer should be used under the following conditions:
✅Medium temperature ≤ 40°C
✅pH range: 5–9
✅Medium density ≤ 1150 kg/m³
✅Submersion depth ≤ 10 meters
✅Flow velocity ≥ 0.15 m/s
Technical Specifications
Model | Motor Power (kw) |
Rated current (A) |
RPM of vane or propeller (r/min) |
Diameter of vane or propeller (mm) |
Weight (kg) |
QJB0.37/-220/3-980/S | 0.37 | 4 | 980 | 220 | 25/50 |
QJB0.85/8-260/3-740/S | 0.85 | 3.2 | 740 | 260 | 55/65 |
QJB1.5/6-260/3-980/S | 1.5 | 4 | 980 | 260 | 55/65 |
QJB2.2/8-320/3-740/S | 2.2 | 5.9 | 740 | 320 | 88/93 |
QJB4/6-320/3-960/S | 4 | 10.3 | 960 | 320 | 88/93 |
QJB1.5/8-400/3-740/S | 1.5 | 5.2 | 740 | 400 | 74/82 |
QJB2.5/8-400/3-740/S | 2.5 | 7 | 740 | 400 | 74/82 |
QJB3/8-400/3-740/S | 3 | 8.6 | 740 | 400 | 74/82 |
QJB4/6-400/3-980/S | 4 | 10.3 | 980 | 400 | 74/82 |
QJB4/12-620/3-480/S | 4 | 14 | 480 | 620 | 190/206 |
QJB5/12-620/3-480/S | 5 | 18.2 | 480 | 620 | 196/212 |
QJB7.5/12-620/3-480/S | 7.5 | 28 | 480 | 620 | 240/256 |
QJB10/12-620/3-480/S | 10 | 32 | 480 | 620 | 250/266 |