QJB type Submerged Mixing Pump Application:

The QJB model submersible mixer is divided into two main series: mixing and low-speed flow.

The Mixed Series Mixers are suitable for agitating suspended liquid in wastewater treatment plants and industrial processes.

Low-speed Turbulator Series Mixers are suitable for industrial and urban wastewater treatment plant aeration basins, generating a strong water flow with low tangential velocity, which can be used to create water currents for circulation and stages like nitrification, denitrification, and phosphorus removal.

Performance Features of QJB Type Submersible Mixer

1. The QJB type submersible mixer features a compact structure, simple operation and maintenance, easy installation and repair, and a long service life.

2. The impeller features a hydrodynamic design structure, offering high work efficiency. The swept-back blades have an auto-cleaning function to prevent debris entanglement and clogging.

3. Blending with the aeration system can significantly reduce energy consumption, increase oxygenation levels, and effectively prevent sedimentation.

4. The motor winding insulation grade is Class X, with a protection rating of IP68. It features imported bearings and a patented motor anti-condensation device, ensuring the motor operates safely and reliably.

5. The mechanical seals are made of tungsten carbide-tungsten carbide. All exposed fasteners are made of stainless steel.

QJB Type Submersible Mixers Application Range

Mixers should operate continuously under the following conditions

1) The highest medium temperature does not exceed 40°C.

2) The medium's pH level is between 5-9.

3) Liquid density not to exceed 1.15 kg/m³.

4) Long-term dive operations, with dive depths generally not exceeding 20 meters.

QJB Type Submersible Mixers Selection Considerations

Selecting a submersible mixer is a complex task, as the correctness of the selection directly affects the normal operation of the equipment. The principle of selection is to ensure that the mixer performs its mixing function fully within an appropriate volume, typically determined by flow rate. According to the different process requirements of wastewater treatment plants, the mixer flow rate should be maintained between 0.15~0.3 m/s. A flow rate below 0.15 m/s will not achieve the desired push flow mixing effect, while a flow rate above 0.3 m/s will affect the process efficiency and lead to waste. Therefore, before selecting, first determine the application of the QJB mixer, such as in sewage ponds, sludge ponds, or biochemical ponds; secondly, consider the medium parameters like suspended solids content, viscosity, temperature, and pH value; and finally, the shape and depth of the pond.

Key Points to Note:

The submersible mixer must be fully immersed in water for operation; it cannot be used in environments with flammable, explosive, or highly corrosive liquids. The steel expansion bolts must be secured according to specifications, and the cables must be tightened and securely fastened after installation.

When selecting a diving propeller, if the blade diameter exceeds 2M, it is recommended to use a gear reducer.

The required配套power for a diving mixer is determined by the volume size, the density of the mixing liquid, and the mixing depth, with one or more mixers selected based on the specific circumstances.

QJB Submersible Stirrer's Installation System

The dedicated installation system for submersible mixers allows for quick assembly and disassembly without the need to drain the pool's wastewater.

When the pool depth H is less than 4 meters, it is recommended to use System I for installation. The submersible mixer's submersion depth can be adjusted vertically as needed, and the maximum rotation angle around the guide rod within the horizontal plane is ±60°. The base, support frame, and lower support bracket of the hoisting system are all fixed with expansion bolts, and no pre-drilled holes are required.

When the pool depth H is greater than 4 meters, it is recommended to use System II, which requires a concrete foundation (or a steel structure base) at the bottom of the pool. The anchoring points for the lifting system base, steel rope bracket, and guide base are all secured with expansion bolts, without the need for pre-drilled holes. System II uses guide steel ropes instead of guide rods, offering convenient transportation and simple on-site installation. This system fundamentally avoids issues such as bending or deformation of guide rods during transportation, which can affect normal use. It also effectively improves situations where normal lifting is impossible due to installation errors of the guide rods in pools with excessive depth. It is particularly convenient and reliable for installation conditions with cantilevered pool tops (as shown in the figure).

When placing an order, please provide the pool depth H and pool type diagram so that the factory can determine the size of the guide rod or guide wire. The material for the installation system is made of stainless steel (or carbon steel). In the installation system, multiple submersible mixers can share a set of lifting devices (except for special requirements from the customer).

The exclusive installation system for the QJB mixer allows for quick assembly and disassembly of the submersible mixer without the need to drain the pond's wastewater.

Installation System I is applicable only to mixers with a pool depth of less than 4 meters, models QJB0.85/8-260/3-740C and QJB1.5/6-260/3-980C. The I-1 model can be adjusted in both horizontal and vertical directions.

Installation Systems II, III, IV, and VI are suitable for pool depths of ≥4m. The guide rod can rotate horizontally around the axis of the guide rod, with a maximum angle of -60° to +60°. When the pool depth exceeds 4 meters, an additional support frame should be added in the middle of the guide rod.

The support bracket and lower bracket are secured to the pool wall and bottom with steel expansion bolts, no pre-drilled holes required.

The installation system of the diving mixer is available in stainless steel and carbon steel with corrosion resistance options.

Installation Diagram of QJB Submersible Agitator

The guide rod or guide wire should be perpendicular to the horizontal, and can be adjusted using a plumb bob.

The hook should be tilted upwards by 5°-10° from the horizontal plane when lifting the submersible mixer.

By adjusting the chains on the hoisting device, the submerged mixer slides down along the guide rod or guide wire, keeping the hoisting hook and the lifting center of the submerged mixer aligned vertically.

Ordering Instructions for QJB Type Submersible Mixers:

Please provide the following detailed information: ① Product name and model of the submersible mixer ② Submersible mixer diameter (mm) ③ Submersible mixer head (m) ④ Submersible mixer flow rate ⑤ Submersible mixer motor power (KW) ⑥ Submersible mixer speed (r/min) ⑦ Submersible mixer voltage (V) ⑧ Submersible mixer suction head (m) ⑨ Whether the submersible mixer comes with accessories, so we can accurately select the right model for you.

In cases where the application is crucial or the environment is complex, please provide design drawings and detailed specifications. Our technical experts will then assist in selecting and confirming the appropriate options for you.

After-sales service

We will continue to provide technical services and support to our customers. The duration is typically no less than one week.

Section 2: During the equipment warranty period, in the event of a system failure, our company will send a designated person to the equipment's location within 24 hours of receiving the customer's formal written notice. 24-hour issue resolution.

Section 3: Post-delivery of the equipment, after the initial installation and debugging, and beyond the warranty period of our company, as long as there are issues with our equipment, regardless of their size, and upon customer request, our company will continue to provide service to the customer as we have always done. All spare parts required by the customer will be supplied at the factory price.

Four. Our company's product quality warranty period: 12 months; not covered for man-made or unintentional damage. The start of after-sales service is from the date of equipment delivery to the customer.