Submersible mixer

QJB type Submerged Mixing Pump Application:

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

The Mixed Series Agitator is suitable for mixing suspended liquid in wastewater treatment plants and industrial processes.

Low-speed Turbulator Series mixers are suitable for industrial and urban wastewater treatment plant aeration tanks, generating a strong water flow with low tangential velocity, which is used for creating water currents in the stages of circulation, nitrification, denitrification, and phosphorus removal.

QJB Type Submersible Mixing Pump Performance Features

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

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

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

4. The motor winding has an insulation grade of level, a protection grade of IP68, and is equipped with imported bearings and a patented anti-condensation device for the motor, ensuring enhanced safety and reliability in operation.

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

QJB Type Submersible Mixing Pump Application Range

The blender should be able to operate continuously under the following conditions:

1) The highest medium temperature does not exceed 40℃;

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

3) Liquid density not exceeding 1.15 kg/m³.

4) Long-term diving operations, with a diving depth generally not exceeding 20 meters.

Selection Considerations for QJB Type Submerged Mixers

Selecting the right 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 the appropriate volume, usually 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. Flow rates below 0.15 m/s do not achieve proper push flow mixing, and rates above 0.3 m/s can affect the process efficiency and lead to waste. Therefore, before selecting, first determine the application of the QJB mixer, such as in sewage pools, sludge pools, or biochemical pools; secondly, consider the medium parameters like suspended solids content, viscosity, temperature, and pH; and finally, the pool shape and water depth.

Key Points of Attention:

Submersible mixers must be fully submerged in water for operation; they cannot be used in environments with flammable, explosive, or highly corrosive liquids. The steel expansion bolts must be securely fastened according to specifications, and the cables must be tightly and securely fastened after installation.

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

The required配套power for a submerged mixer is determined by the volume size, the density of the mixing liquid, and the mixing depth. One or more mixers are selected based on the specific situation.

QJB Submersible Mixer's Installation System

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

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 rotational angle around the guide rod within the horizontal plane is ±60°. The base, support frame, and lower support of the hoisting system are all fixed with expansion bolts, without the need for pre-drilled holes.

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 mounting brackets, and guide base are all secured with expansion bolts, without the need for pre-drilled holes. System II uses guide steel ropes in place 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 the situation of inability to lift normally due to installation errors of guide rods when the pool depth is excessively deep. The installation under cantilevered pool tops (as shown in the figure) is particularly convenient and reliable.

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 during processing. The material for the installation system is made of stainless steel (or carbon steel). In the installation system, multiple submersible mixers can share a single lifting device, excluding any 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 only applicable 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, where I-1 can be adjusted in both horizontal and vertical directions.

System II, III, IV, and VI installations 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 securely fastened to both the pool wall and bottom using steel expansion bolts, no pre-drilled holes required.

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

Installation Diagram of QJB Submersible Agitator

The guide rod or guide wire should be perpendicular to the horizontal, and can be corrected 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 chain on the hoisting device, the submersible mixer descends along the guide rod or guide wire, ensuring that the hoisting hook and the center of gravity of the submersible mixer align vertically.

Ordering Instructions for QJB Type Submersible Mixers:

Please provide the following detailed information: 1. Product name and model of the submersible mixer 2. Diameter of the submersible mixer (mm) 3. Head of the submersible mixer (m) 4. Flow rate of the submersible mixer 5. Motor power of the submersible mixer (KW) 6. Speed of the submersible mixer (r/min) 7. Voltage of the submersible mixer [V] 8. Suction height of the submersible mixer (m) 9. Whether the submersible mixer comes with accessories, so we can select the right model for you.

When the application is critical or the environment complex, please provide design drawings and detailed specifications. Our technical experts will assist in selecting and confirming the appropriate options for you.

After-Sales Service

We will continue to provide technical services and support to our clients. The duration is generally not less than a 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 are completed, and beyond the warranty period of our company, as long as there are issues with our equipment, regardless of their size, and upon the customer's request, our company will continue to provide service as usual. All spare parts required by the customer will be supplied at the factory price.

Section 4: Product Quality Warranty: 12 months. No warranty for damage caused by human error or unintentional damage. The start of after-sales service is from the day the equipment is delivered to the customer.