QJB Type Submersible Mixing Pump Application:
The QJB type submerged mixer is divided into two main series: mixing and low-speed flow propulsion.
The Mixed Series Blender is suitable for mixing suspended liquid in wastewater treatment plants and industrial processes.
Low-speed impeller mixers are suitable for aeration tanks in industrial and urban wastewater treatment plants, generating powerful water currents with low tangential flow, which can be used to create water currents in stages such as circulation, nitrification, denitrification, and phosphorus removal.
QJB Submersible Agitator 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, offering high work efficiency. The swept-back blades have an auto-cleaning function to prevent debris entanglement and blockage.
3. Blending with an aeration system significantly reduces energy consumption, improves oxygenation levels, and effectively prevents sedimentation.
4. The motor winding insulation level is grade, with a protection rating of IP68. We use imported bearings and a patented motor anti-condensation device, ensuring the motor operates more safely and reliably.
5. The two mechanical seals are made of tungsten carbide-tungsten carbide. All exposed fasteners are made of stainless steel.
QJB Type Submersible Agitator Applicability
Mixers should operate normally and 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 Mixing Pump Selection Precautions
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 flow rate. According to the different process requirements of wastewater treatment plants, the flow rate of the mixer should be maintained between 0.15~0.3 m/s. A flow rate below 0.15 m/s will not achieve the desired plug 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: sewage pond, sludge pond, biochemical pond; secondly, the medium parameters, such as: suspended solids content, viscosity, temperature, 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 cable must be tightened and securely fastened.
When selecting a diving propeller, if the diameter of the blades exceeds 2M, it is recommended to use a gear reducer.
The required matching power for a submersible mixer is determined by the volume, the density of the mixing liquid, and the depth of mixing, with one or more mixers being used based on specific circumstances.
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'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 support of the hoisting system are all fixed with expansion bolts, eliminating 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 steel structure base) at the pool bottom. The lifting system base, steel rope mounting brackets, and guide base connections to the pool 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 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 impossible due to installation errors of the guide rods in pools with excessive depth. 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 (unless the user has special requirements).
The QJB mixer's dedicated installation system 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, where I-1 can be adjusted in both horizontal and vertical directions.
System II, III, IV, and VI installations are suitable for pools with a depth 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 support bracket are securely fastened to 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.
QJB Submersible Stirrer 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 inclined upwards by 5°-10° from the horizontal plane when lifting the submerged mixer with a propeller end.
By adjusting the chains 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 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 correct model for you.
Please provide design drawings and detailed specifications when the application is critical or the environment is 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. The duration is generally not less than one week.
During the equipment warranty period, in the event of a system failure, our company will send a dedicated person to the equipment site within 24 hours of receiving the customer's formal written notification. 24-hour issue resolution.
Section 3. Post-delivery, after the initial installation and debugging are completed, and beyond the warranty period of our company, should our equipment encounter any issue, regardless of its magnitude, as long as the customer requests, our company will continue to provide services 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.
