Product Description
The brand's diving propeller is assembled with German diving motor sealing technology. Through years of practical exploration, its overall performance has reached the level of similar foreign products due to its innovations in form, structure, and testing methods.
The QJB type submerged mixer is divided into two main series: mixing and low-speed flow 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 aeration basins and oxidation ditches in industrial and urban sewage treatment plants, including AAO tanks, A2O tanks, anaerobic tanks, and anoxic tanks. They generate strong water currents with low tangential flow, which can be used for circulation and creating water currents during the nitrification, denitrification, and phosphorus removal stages.
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 value is between 5~9.
3. Liquid density not exceeding 1150 kg/m³3;
4. Long-term submerged operation, with a diving depth generally not exceeding 20 meters.
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 tightened and securely fastened after installation.
When selecting a diving propeller, if the diameter of the blade 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, with high work efficiency. The swept-back blades have self-cleaning capabilities, preventing debris entanglement and blockage.
3. Blending with the aeration system significantly reduces energy consumption, improves oxygenation levels, and effectively prevents sedimentation.
4. Motor winding with F-grade insulation, IP68 protection rating, and selected bearings with anti-condensation devices for the motor, ensuring safer operation.
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 rated voltage 380V, frequency 50Hz, F-grade winding insulation, IP68 protection rating, and in working mode Ⅰ.
Product Application
The QJB Submersible Propeller is a low-speed flow impeller suitable for aeration and anaerobic tanks in industrial and urban wastewater treatment plants. It generates a strong water flow with low tangential velocity, which is used for water circulation in the tank and to create water flow during stages such as nitrification, denitrification, and phosphorus removal.
Product Features
1. The QJB Submersible Propulsion is compact in structure, easy to operate and maintain, convenient for installation and maintenance, and boasts a long service life.
2. The impeller features an excellent hydraulic design structure, with high work efficiency. The swept-back blades have an automatic self-cleaning function, preventing debris entanglement and clogging.
3. Mixing with the aeration system can significantly reduce energy consumption, significantly improve oxygenation, and effectively prevent sedimentation.
4. The motor winding has an insulation grade of F and a protection grade of IP68. It features imported bearings and a patented anti-condensation device for the motor, ensuring enhanced safety and reliability in operation.
5. Two mechanical seals, made of tungsten carbide. All exposed fasteners are made of stainless steel.
Installation System:
Selection Considerations:
Selecting a submersible flow inducer is a complex task; the correctness of the selection directly affects the normal operation of the equipment. The principle of selection is to ensure that the mixer operates at full agitation capability 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 0.15~0.3 m/s. A flow rate below 0.15 m/s will not achieve the desired flow induction agitation, and a flow rate above 0.3 m/s will affect the process efficiency and cause waste. Therefore, prior to selection, it is essential to first determine the application site of the submersible mixer, such as: sewage pond, sludge pond, or biochemical pond; followed by the medium parameters, such as: suspended solids content, viscosity, temperature, and pH value; and also the shape and depth of the pond.
The required matching power for the mixer is determined by the volume, the density of the mixing liquid, and the depth of mixing, with either one or multiple mixers being used based on the specific circumstances.
Low-speed Turbulent Flow Type:
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. Based on the initial flow velocity y of the stirring medium, determine the work consumed per unit flow by referring to 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 multiply by the sludge correction factor and the tank type correction factor to obtain the total power required for the entire pool 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:
