QJB Series Submersible Agitator Application:
The QJB type submersible 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 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 Agitator Performance Features
1. The QJB type submersible mixer features a compact structure, simple operation and maintenance, easy installation and maintenance, and a long service life.
2. The impeller features a hydrodynamic 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, markedly increases oxygenation, and effectively prevents sedimentation.
4. The motor winding is insulated to a certain grade, with a protection class of IP68. We use imported bearings and a patented motor anti-dewing device for added 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 submerged mixer application 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/m³;
4) Long-term dive operations, with dive depths generally not exceeding 20 meters.
QJB Type Submersible Mixing Pump Selection Considerations
Selecting the appropriate 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 full mixing function within an 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 0.15~0.3 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 result in waste. Therefore, before selecting, first determine the application of the QJB mixer, such as in wastewater ponds, sludge ponds, or biochemical ponds; next, consider the medium parameters such as suspended solids content, viscosity, temperature, and pH; and finally, the shape and depth of the pond.
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. After installation, the cables must be tightened and properly secured.
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 diving 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 the specific circumstances.
QJB Submersible Mixers' Installation System
The dedicated installation system for submersible mixers allows for quick assembly and disassembly without draining the pond's wastewater.
When the pool depth H is less than 4 meters, it is recommended to use Installation System I. The submersible mixer's submersion depth can be adjusted vertically as needed, and it can rotate around the guide rod within a maximum angle of ±60° on the horizontal plane. The base, support frame, and lower bracket 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 bottom connections for the lifting system base, steel rope mounting brackets, and guide base with 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 or deformation of guide rods during transportation, which can affect normal use. It also effectively improves situations where the pool is too deep, preventing abnormal lifting due to installation errors in the guide rods. The installation conditions with cantilevered pool tops (as shown) are particularly convenient and reliable to operate.
Please provide the pool depth H and pool type diagram when placing an order, so that the factory can determine the size of the guide rod or guide wire during processing. The material used 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 the need to drain the pond's wastewater.
Installation System I is applicable only for 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.
Installation systems II, III, IV, and VI are suitable for pool depths of ≥4m. The guide rods 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 with steel expansion bolts, no pre-drilled holes required.
The installation system of the underwater mixer is available in options of stainless steel and carbon steel with anti-corrosion coatings.
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 upwards by 5°-10° from the horizontal plane when lifting the submersible mixer.
By adjusting the chain on the hoisting device, the submersible mixer slides down the guide rod or guide wire, ensuring that the hoisting hook and the lifting center of the submersible mixer are aligned on the same vertical line.
Order 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) ③Head of the submersible mixer (m) ④Flow rate of the submersible mixer ⑤Motor power of the submersible mixer (KW) ⑥Rotation speed 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 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 then assist in selecting and confirming the appropriate model 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, should a system failure occur, our company will send a designated 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 equipment is delivered to the customer and upon completion of the initial installation and debugging, even after the warranty period of our company has expired, as long as there are issues with our equipment, regardless of their size, and if the customer requests it, our company will continue to provide service as usual. We will supply all spare parts required by the customer at the factory price.
Four. Our company's product quality warranty period is 12 months; warranty does not cover 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.
