Product Description
The brand's diving propeller is assembled with German diving motor sealing technology. After years of practical exploration, its overall performance has reached the level of similar foreign products due to its innovation in form, structure, and testing methods.
The QJB type submersible mixer is divided into two major 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 aeration basins and oxidation ditches in industrial and urban wastewater treatment plants, as well as AAO, A2O, anaerobic, and anoxic tanks. They generate 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.
Application Scope:
The blender should be able to operate continuously under the following conditions:
1. Medium temperature not to exceed 40°C.
2. The medium's pH level is between 5~9.
3. Liquid density not exceeding 1150 kg/m³3;
4. Long-term dive operations, with dive depths generally not exceeding 20 meters.
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 tightened and properly secured after installation.
When selecting a submersible propeller, if the impeller diameter exceeds 2M, it is recommended to use a gear reducer.
Performance Features:
1. Compact structure, easy operation and maintenance, convenient installation and repair, and long service life.
2. The impeller features an excellent hydraulic design structure, high work efficiency, and backward-curved blades with self-cleaning capabilities, which prevent debris entanglement and blockage.
3. Blending with an aeration system significantly reduces energy consumption, improves oxygenation, and effectively prevents sedimentation.
4. Motor winding with F-grade insulation, IP68 protection rating, selected bearings and anti-condensation devices for the motor, ensuring safer operation of the motor.
5. Two mechanical seals; the mechanical seals are sealed with silicon carbide material, and the rubber material is fluoroelastomer.
Model Representation Method:
Performance Parameters:
The mixer operates at a rated voltage of 380V, frequency of 50Hz, with F-grade winding insulation and IP68 protection rating, under working mode I.
Product Application
The QJB Submersible Propeller is a low-speed flow series mixer, suitable for aeration and anaerobic ponds in industrial and urban wastewater treatment plants. It generates a strong water current with low tangential flow, which can be used for pond water circulation and to create water currents during stages such as nitrification, denitrification, and phosphorus removal.
Product Features
1. The QJB Submersible Thruster features a compact structure, simple operation and maintenance, easy installation and repair, and a long service life.
2. The impeller features an excellent hydraulic design structure with high efficiency. The swept-back blades have self-cleaning properties, preventing debris entanglement and blockage.
3. Blending with the aeration system can significantly reduce energy consumption, increase oxygenation levels, and effectively prevent sedimentation.
4. The motor winding has an insulation grade of F, with a protection rating of IP68. We use imported bearings and a patented anti-condensation device for the motor, ensuring safer and more reliable operation.
5. Two mechanical seals, made of tungsten carbide. All exposed fasteners are made of stainless steel.
Installation System:
Selection Considerations:
Selecting the right submersible flow inducer is a complex task, as the correctness of the selection directly impacts the normal operation of the equipment. The principle of selection should be to ensure the mixer performs its stirring function effectively within an appropriate volume, usually 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 flow induction stirring effect, while a flow rate above 0.3 m/s will affect the process efficiency and lead to waste. Therefore, prior to selection, it is essential to first determine the application site of the submersible mixer, such as: sewage pond, sludge pond, biochemical pond; followed by the medium parameters, such as: suspended solid content, viscosity, temperature, pH value; and also the shape and depth of the pool.
The required matching power for a mixer is determined by the volume size, the density of the mixing liquid, and the mixing depth. A single mixer or multiple mixers are used based on the specific circumstances.
Low-speed Turbulence Generator
1. Determine the tank type correction coefficient for the mixing tank based on Figure B1 or Table B1.
2. Determine the sludge correction factor for the medium to be mixed based on Figure B2 or Table B2.
3. Determine the work consumed per unit flow based on the initial flow velocity y of the mixing medium, as indicated in Figure B3.
4. Calculate the flow rate of the agitator by multiplying the initial flow velocity of the stirring medium, y, by the cross-sectional area formed by the impeller rotation.
5. Multiply the flow rate of the mixer by the power consumption per unit flow, then by the sludge correction factor and the pond type correction factor, to obtain the total power required for the entire pond medium.
Diving Propulsion Flow Field Diagram:
The following flow field is under the condition of clear water with a boundary water velocity of V=0.1 m/s:
Installation Location Selection:
