QJB Type Submersible Agitator 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 impeller mixers are suitable for industrial and urban sewage 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 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 with high work efficiency. The swept-back blades have self-cleaning capabilities, preventing debris entanglement and blockage.
3. When used in conjunction with an aeration system, it significantly reduces energy consumption, increases oxygenation, and effectively prevents sedimentation.
4. The motor winding insulation is of grade, with a protection rating of IP68. We use imported bearings and a patented anti-condensation device for the motor, ensuring the motor operates 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 Application Range
The blender should be able to operate continuously under the following conditions:
1) Maximum medium temperature does not exceed 40℃;
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 Model Submersible Mixer Selection Considerations
Selecting a submersible mixer can be a complex task, as the correctness of the selection directly affects the normal operation of the equipment. The principle of selection is to ensure the mixer performs full agitation within an appropriate volume, typically determined by flow rate. According to the different process requirements of wastewater treatment plants, the flow rate of the mixer should be maintained between 0.15~0.3m/s. A flow rate below 0.15m/s fails to achieve plug flow mixing, while a flow rate above 0.3m/s can impact process efficiency and cause waste. Therefore, prior to selection, it is crucial to first determine the application of the QJB mixer, such as in sewage ponds, sludge ponds, or biochemical ponds; next, consider parameters of the medium, including suspended solids content, viscosity, temperature, and pH; and also the shape and depth of the pond.
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 matching power for a submersible mixer is determined by the volume size, the density of the mixing liquid, and the mixing depth. One or more mixers are used based on the specific circumstances.
QJB Submersible Mixing Pump 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 rotation angle 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 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 in guide rods, especially in pools with cantilevered pool tops (as shown in the figure), making the operation more convenient and reliable.
When placing an order, please provide the pool depth H and the pool type diagram to ensure 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 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.
System I is only applicable for mixers with a pool depth of less than 4m, models QJB0.85/8-260/3-740C and QJB1.5/6-260/3-980C. Among them, I-1 is adjustable in both the 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 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 both the pool wall and bottom using 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.
Installation Diagram for 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 inclined upwards by 5°-10° from the horizontal surface when lifting the submerged 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.
Order 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 of great importance or the environment is complex. 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 one week.
Section 2: During the equipment warranty period, in the event of a system failure, our company will dispatch a dedicated person 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 delivery of the equipment to the customer, following the initial installation and troubleshooting, 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 if the customer requests it, 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; no warranty for man-made or unintentional damage. The start of after-sales service is from the day the equipment is delivered to the customer.
