QJB Type Submersible Mixing Pump Application:
The QJB type submersible mixer is divided into two main series: mixing and low-speed propulsion.
The Mixed Series Agitators are 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 strong water currents with low tangential flow, which can be used to create water currents for circulation, nitrification, denitrification, and phosphorus removal stages.
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 work efficiency. The swept-back blades have an auto-cleaning function, preventing debris entanglement and blockage.
3. Mixing with the aeration system can significantly reduce energy consumption, notably increase oxygenation, and effectively prevent sedimentation.
4. The motor winding insulation grade is Class X, with a protection grade of IP68. We use imported bearings and a patented anti-condensation device for the motor, ensuring enhanced safety and reliability in operation.
5. The mechanical seals are made of tungsten carbide-tungsten carbide. All exposed fasteners are made of stainless steel.
QJB model submersible mixer, applicable range
The mixer should be able to operate continuously under the following conditions.
1) Maximum medium temperature does not exceed 40℃.
2) The medium's pH value is between 5-9.
3) Liquid density not exceeding 1.15 kg/cubic meter;
4) Long-term dive operations, with dive depths typically 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, usually determined by the 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 also 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 securely fastened according to specifications. After installation, the cables must be tightly and securely fastened.
When selecting a diving propeller, if the diameter of the blades exceeds 2M, it is recommended to use a gear box reducer.
The required配套power for a submersible mixer is determined by the volume, the density of the mixing liquid, and the mixing depth, with one or more mixers chosen based on specific circumstances.
QJB Submersible Agitator's Installation System
The dedicated installation system for submersible mixers allows for quick assembly and disassembly without the need to drain the pond'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 it can rotate up to ±60° around the guide rod in the horizontal plane. The base, support frame, and lower bracket of the hoisting system are all fixed with expansion bolts to the relevant connection surfaces of the pool, 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 base, steel rope bracket, and guide base for the lifting system 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 and deformation of guide rods during transportation, which can affect normal use. It also effectively improves situations where normal lifting is not possible due to installation errors of the guide rods in pools with excessive depth. The installation conditions with cantilevered pool tops (as shown) are even more convenient and reliable to operate.
When placing an order, please provide the pool depth H and pool type diagram to ensure the manufacturer 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 single lifting device, excluding any special requirements from the customer.
The QJB mixer's dedicated installation system 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 are suitable for pool depths of ≥4m. The guide rod can rotate horizontally around the axis of the guide rod, with a maximum rotation 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 and lower bracket are securely fastened to the pool wall and bottom using steel expansion bolts; no pre-drilled holes are required.
The installation system of the submersible mixer offers options in stainless steel and carbon steel with corrosion resistance.
QJB Submersible Mixing Pump Installation Diagram
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 upward by 5°-10° from the horizontal plane when lifting the submersible mixer.
By adjusting the chains on the hoisting device, the submersible mixer is guided down the 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 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 select the right model for you.
In cases where the application is highly 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 typically not less than one week.
II. During the equipment warranty period, should a system failure occur, our company will dispatch a specialized staff member to the equipment's usage site 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 have been completed, and beyond the warranty period of our company, as long as there are issues with our equipment, regardless of their magnitude, and if the customer requests, we will continue to provide services to the customer as we have done, offering all replacement parts at the factory price.
Four. Our company's product quality warranty period is 12 months; warranty does not cover damage caused by misuse or accidental damage. The start of after-sales service is from the day the equipment is delivered to the customer.
