Dual-curved mixer
Diving bi-spherical agitator installation
Price of Stainless Steel Bi-curved Blender
304 Stainless Steel Double Concave Blender

Duwan Environmental produces the SGJ-2500 Double Curved BlenderFor complete sets of equipment (including self-protective devices), it should be ensured that no additional parts are required during operation, and installation and debugging guidance for the complete set of equipment should be provided. The main supply content should at least include the following parts:
——Fully assembled mixers
——Variable Frequency Motor (with reducer and variable frequency inverter)
——InstallationTools; Random Spare Parts
Double-curved agitatorMachinePerformance and structureDescription:
Dual-curved mixerMachineShould be suitable for operation in sewage or sludge, during operation, no fibers should hang in any part of the water, ensuring thorough mixing in all areas of the pool, with no sludge sedimentation throughout the pool and no dead corners.
Dual-curved blade mixerMachineAvailable daily24/7 operation, designed for a lifespan of not less than 20 years. Must operate continuously under full immersion conditions, maintaining smooth operation and no vibration throughout the process, with at least 10,000 hours of fault-free runtime.
Duo-curvedThe mixer shaft power should ensure complete water mixing and maintain an average flow rate at the bottom of the pool.≥300mm/s, the motor power should be greater than 1.15 times the actual shaft power, and ensure the mixer does not overload under the design operating conditions.

Dual-curved mixerMachineAll weight loads must be supported by the concrete floor, the impeller position should be close to the bottom of the pool, no bearing support at the bottom. The mixer's main shaft should be an integral design directly connected to the reducer, not a segmented structure connected by a coupling. It is connected to the gear reducer motor via a cantilevered vertical shaft, which transmits torque.
Turbine impellers should be in the form of a conical double-curved surface, semi-open, with guide vanes on the conical surface. ImpellerThe connection with the shaft must be made using countersunk nuts; other methods are not accepted.
Duo-curved mixerMachineThe impeller's rotation direction is determined by the actual wastewater flow condition in the process, and can be rotated clockwise or counterclockwise when viewed from above.
Electric motor reducers and mounting bases are installed and fixed on the concrete floor slabs. The motor design should comply withIEC standard, Class F insulation, power supply 380V, 3-phase, 50Hz, protection rating IP65, can be started at least 12 times per hour.
Directly connected to the motor, the reducer features a helical gear reducer, with the gear design conforming toDIN standard, alloy steel gears, hard teeth surface, service factor ≥ 2.0, bearing rated life ≥ (L10) 100,000 hours.
Dual-curved mixingMachinePrimary Materials
Mixer shaft of high strengthThin-walled hollow pureFiberglassGRPOr304 Stainless Steel shaft
TurbineYiWheelFiberglassGRP
Bolts, nuts, washers - stainless steel304
Base Carbon Steel Corrosion Resistance
Electrical Control CabinetStainless steel304
Dual-curved mixerCorrosion Prevention Measures

Jiangsu Du'an Environmental ProtectionManufactureDuo-curved mixingMachineAll materials shall be suitable for the corrosive environment of a sewage treatment plant. Unprotected or non-corrosion-resistant materials shall be treated in accordance with the provisions of the general technical requirements clause.
Dual-curved stirrerInspection and Testing
EquipmentFactory inspection and testing should be conducted prior to shipment.And provide a product compliance certificate or quality assurance document.
After installation, the item should be inspected in accordance with the requirements to ensure its performance meets the specified standards.
The dual-curved mixer should run smoothly without any binding or vibration when operating on a spot turn at no water condition.
Perform on-site load tests under design operating conditions.24-hour continuous operation with load, current not exceeding the motor's rated current. The blender's mixing uniformity meets the design requirements.
Dual-curved agitatorAttachments and materials
Duo-curved mixerTechnical Description; Simulation Diagram;Basic Bolt Arrangement Detail;Electrical Schematic、Supplementary motor wiring diagram, control cabinet wiring diagram, and control principle diagram;Flow pattern diagram at the bottom of the agitator pool for this engineering layout; Protective coating description;Product manuals and related materials.




