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 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 strong water currents with low tangential flow, which can be used to create water currents for circulation and stages such as nitrification, denitrification, and phosphorus removal.
QJB Series Submersible Mixers Performance Features
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 hydraulic design structure with high work efficiency. The swept-back blades have self-cleaning capabilities, preventing debris entanglement and blockage.
3. Blending with an aeration system significantly reduces energy consumption, enhances oxygenation, and effectively prevents sedimentation.
4. The motor winding has an insulation grade of class, a protection grade of IP68, and uses imported bearings and a patented anti-condensation device for the motor, ensuring the motor operates with enhanced safety and reliability.
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 dive operations, with dive depths generally not exceeding 20 meters.
QJB Type Submerged Agitator Selection Considerations
Selecting the right submersible mixer is a complex task; the correctness of the selection directly affects the normal operation of the equipment. The principle of selection is to ensure the mixer performs its stirring function fully within the appropriate volume, generally determined by the flow rate. According to the different process requirements of wastewater treatment plants, the flow rate of the mixer should be maintained between 0.15~0.3m/s. A flow rate below 0.15m/s will not achieve the desired turbulent mixing effect, while a flow rate above 0.3m/s will impact the process efficiency and lead to waste. Therefore, prior to selection, first determine the application of the QJB mixer, such as: wastewater pond, sludge pond, or biochemical pond; followed by the medium parameters, such as: suspended solids content, viscosity, temperature, and pH value; and also the pool shape and water depth.
Key Points to Note:
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 submersible mixer is determined by the volume, the density of the mixture, and the depth of mixing, with one or more mixers chosen based on the specific circumstances.
QJB Submersible Mixers' 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 angle it can rotate around the guide rod in 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 base of the lifting system, the steel rope fixing frame, and the 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, featuring easy transportation and simple on-site installation. This system fundamentally avoids the issues of guide rod bending and deformation during transportation, which can affect normal use. It also effectively improves the situation where normal lifting cannot be achieved due to installation errors of the guide rod in cases of excessively deep pool depths. The installation conditions with cantilevered pool tops (as shown in the figure) are even more convenient and reliable to operate.
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 dedicated installation system for the QJB mixer allows for quick assembly and disassembly of the submersible mixer without draining the pond's wastewater.
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, with I-1 adjustable in both horizontal and vertical directions.
Installation Systems II, III, IV, and VI are suitable for pools with a depth of ≥4m. The guide rod can rotate horizontally around its axis, with a maximum rotation angle of -60° to +60°. When the pool depth exceeds 4 meters, an additional support frame should be added at the center of the guide rod.
The support and base brackets are securely fastened to both the pool wall and bottom with steel expansion bolts, no pre-drilled holes required.
The installation system of the submersible mixer offers options in stainless steel and carbon steel with corrosion resistance.
Illustration for Installation of QJB Submersible Mixing Pump
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 submerged mixer with a propeller end.
By adjusting the chain 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: ①Product name and model of the submersible mixer ②Diameter of the submersible mixer (mm) ③Flow height of the submersible mixer (m) ④Flow rate of the submersible mixer ⑤Motor power of the submersible mixer (KW) ⑥Speed of the submersible mixer (r/min) ⑦Voltage of the submersible mixer [V] ⑧Suction head of the submersible mixer (m) ⑨Whether the submersible mixer comes with accessories, so we can accurately select the model for you.
Please provide design drawings and detailed specifications when the application is critical or the environment complex. 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 clients, which typically lasts for at least one week.
II. During the equipment warranty period, in the event of a system failure, our company will dispatch a specialist to the equipment's usage site within 24 hours of receiving the customer's formal written notice. 24-hour issue resolution
Section 3: After the equipment is delivered to the customer and the initial installation and debugging are completed, even after the warranty period of our company has expired, as long as there is an issue with our equipment, regardless of its magnitude, and the customer requests it, our company will continue to provide service to the customer as usual. 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 damage due to human error or unintentional damage. The start of after-sales service is on the day the equipment is delivered to the customer.
