详情描述

Product Description:

Submersible mixers have been refined over many years of practical exploration, thanks to their innovative form, structure, and testing methods. They offer a good balance of performance and cost, enhancing the mixing efficiency of wastewater. Primarily used in the process flow of wastewater treatment plants to agitate suspended sludge, thin mud slurry, industrial process liquids, etc., they create water currents, strengthen mixing functions, prevent sludge sedimentation, and ensure uniform mixing and reaction among solid, liquid, and gas phases in municipal and industrial wastewater treatment processes.

The QJB type submerged mixer is divided into two main series: mixing and low-speed push flow.

The Mixed Series Agitator is suitable for wastewater treatment plants and industrial processes, where it is used to agitate aeration and anaerobic tanks. It creates water currents by circulating pool water, suspended solids, and during the nitrification, denitrification, and phosphorus removal stages.

Low-speed impeller mixers are suitable for industrial and urban wastewater treatment plant aeration basins, 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.

Application Scope:

Mixers should be capable of normal continuous operation under the following conditions:

Medium temperature not to exceed 40°C.

The pH value of the 2 mediums is between 5~9.

3 Liquid density not exceeding 1150 kg/m³.

4 Long-term dive operations, with dive depths generally not exceeding 20 meters.

Cautionary Notes:

Submersible mixers must be fully submerged in water for operation; they cannot be used in environments with flammable, explosive, or highly corrosive liquids. Steel expansion bolts must be secured according to specifications, and the cables must be tightened and securely fastened after installation.

When selecting a diving propeller, if the diameter of the blades exceeds 2M, it is recommended to use a gear box reducer.

Performance Features:

Compact structure, easy operation and maintenance, convenient installation and inspection, and long service life.

2 The impeller conforms to the hydraulic design structure, boasts high work efficiency, and the swept-back blades have self-cleaning capabilities, preventing debris entanglement and blockage.

Combining with the aeration system can significantly reduce energy consumption, increase oxygenation levels明显，and effectively prevent sedimentation.

4 The motor winding has a F-grade insulation level, an IP68 protection rating, and features superior bearings and anti-condensation devices for the motor, ensuring safer operation; 5 Double mechanical seals.

Model Representation Method:

Performance Parameters:

The mixer operates at a rated voltage of 380V, a frequency of 50Hz, with a winding insulation grade of F and a protection rating of IP68, under working mode I.



Submersible mixer appearance:

Mixing Machine Installation Dimensions:

Installation System (Bracket Optional):



Selection Considerations:

Selecting a submersible mixer 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 performs its stirring function fully within the appropriate volume, typically determined by flow rate. According to the different process requirements of wastewater treatment plants, the mixer's flow rate should be maintained between 0.15 to 0.3 m/s. A flow rate below 0.15 m/s will not achieve the desired turbulent mixing effect, while a flow rate exceeding 0.3 m/s may impact the process efficiency and result in waste. Therefore, before selecting, it's essential to determine the application site of the submersible mixer, such as sewage pools, sludge pools, or biochemical pools. Next, consider the medium parameters like suspended solids content, viscosity, temperature, and pH value. Also, take into account the pool's shape and water depth.

The required matching power for the mixer is determined by the volume size, the density of the mixing liquid, and the mixing depth. A single or multiple mixers are used based on the specific circumstances.


Hybrid Stirred Type

Determine the sludge correction factor for the medium to be mixed based on Figure B1 or Table B1.

Determine the tank type correction coefficient for the mixing tank based on Figure B2 or Table B2.

3 Multiply the required work per cubic meter of clear water by 5 W, then by the sludge correction factor, and finally by the tank type correction factor to obtain the actual work required per cubic meter for the medium to be mixed and agitated. Multiply this by the volume of the medium to be mixed, resulting in the total power required for the entire tank's mixed and agitated medium.


Low-speed Turbulent Flow Type

Determine the tank type correction coefficient for the mixing tank based on Figure B1 or Table B1.

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.

Calculate the flow rate of the mixer by multiplying the initial flow velocity of the stirring medium (y) by the cross-sectional area formed by the impeller as it rotates.

To determine the total power required for the entire pool medium, multiply the flow rate by the power consumption per unit flow, then further multiply by the sludge correction factor and the pool type correction factor.

Table B1 Pond Correction Coefficient Table


Table B2 Sludge Correction Coefficient Table


Diving mixer flowchart:

The following flow field is under the condition of clear water with a boundary water velocity of V=0.1 m/s:


Operating Conditions:

Mixed Blending Series

For regular pool usage, it is recommended to arrange face-to-face in an alternating pattern.

Low-Speed Flow Agitator Series

For regular pool-type applications, it is recommended to arrange them face-to-face with staggered positioning.