Duwan Environmental's QJB5.5/12-620/3-480 Submersible Mixer for Non-Draining Installation

Basic Installation Requirements for Submersible Mixers:

Underwater agitator installed in the bioreactorSuitable for different sections of the pond, enhancing the mixing capabilities of the activated sludge with incoming water., The equipment must prevent sludge from settling. The mixer must be suitable for continuous operation in the bioreactor. Specific requirements are as follows:

The hydrodynamic streamlined impeller blades feature self-cleaning capabilities.

The motor and mixer shafts are supported by maintenance-free lubrication bearings.

Axles must not come into contact with the medium.

Propellers are easy to replace.

Motor Protection ClassIP68Insulation GradeFThe grade, surrounding medium cools.

Agitator equipped with leakage sensors and bearing temperature sensors.

The rotating boom must be able to freely lift and lower the underwater mixer.

Manual winches on swing jibs must be equipped with a safety ratchet lock mechanism, located near the crank handle.Greatly not exceeding22kg。

On-site control, remote control from the control room.PLCProgram Control.

Submersible Mixer Design and On-Site Requirements:

Diving AgitatorThe mixer should be designed to withstand corrosive environments in municipal wastewater. It should operate continuously under full immersion conditions. Additionally, it should be capable of both continuous and intermittent operation.(The number of startups per hour should be able to reach20 Next)The status of resuming operations after a long-term shutdown, with low-speed stirring.The pulp blades are driven by an underwater motor through a reduction gear, with the high-speed agitator blades and the motor being coaxial.

The Submersible mixer is equipped with sufficient mixing and flow-pushing functions to ensure that the anaerobic sludge does not settle and maintains uniform sludge concentration during operation.

Submersible mixers are designed for up and down movement, easy mobility, and can be conveniently removed for inspection or maintenance without the need for personnel to enter the pool or well. The submersible mixer should be a complete set, with each set including a stainless steel fixed bracket, guide rod, and stainless steel lifting device for free vertical and directional movement. The mixer can be disassembled and installed without draining the pool. Suppliers should determine the power, impeller diameter, and speed of the mixer based on the pool size and their experience, and be responsible for its performance.

The submersible mixer is installed on a bracket that slides along the guide rod, serving as a single unit. The bracket must be capable of supporting the full weight of the mixer and the significant thrust generated during the operation of the submersible mixer.

Submersible mixers utilize dual mechanical seals. The outer mechanical seal prevents the mixing fluid from entering the oil cavity, while the inner mechanical seal keeps the oil within the cavity from reaching the motor. The inner and outer seals operate independently. A sample must be provided with the bid to verify.

Duwan Environmental CompleteQJBSubmersible mixers include the following components:

（1Fully assembled submersible mixerMachine Master

（2No Chinese content provided.Full Copper Coil Submersible Motor

（3Complete installation system (guideways, brackets, ...)Enhance equipment, fasteners, etc.

（4Each unitDiving AgitatorSubmersible Cable 10mSubsea Cable Clamp and Fasteners

（5Electrical protection components, including short-circuit, overload, and phase-loss protection.

（6）Submersible mixer protective components include humidity protection, temperature protection, and protective controllers, etc.

（7Local control cabinets and junction boxes, etc.; cabinet material, outdoor use304 Stainless steel, carbon steel coated indoors, cabinet styleStandard in size, silver in colorControl box components utilize ABBSchneider, Siemens, or equivalent brands.

（8All connection accessories and all fasteners for installation(Including stainless steel chemical anchor bolts, nuts, washers, etc.)；

（9Please provide the Chinese content to be translated into American English.Backup Tools.

QJBParts for Submersible Mixers

Propeller: Stainless SteelAISI304

Gearbox: Cast IronDIN1691 GG25 (ASTM A48 35B)

Motor Shell: Cast IronDIN1691 GG25 (ASTM A48 35B)

Diverter Cover: Stainless SteelAISI304

Axle: Stainless Steel

Mechanical Seals: Silicon Carbide/Silicon Carbide Fasteners: Stainless SteelAISI 316

Cable Jacket: Chlorinated Butyl Rubber

O Oval Ring: Nitrile or Fluorinated Rubber; Stirrer Bracket: Stainless SteelAISI 304

Guide Rail System: Stainless SteelAISI 304

Enhanced Chain: Stainless SteelAISI 3164

Enhance Hoisting Boom: Stainless SteelAISI304

Chemical Anchor Bolts: Stainless SteelAISI304

Surface Corrosion Protection: Two-Component Epoxy Resin Coating, Two Layers of Primers Each with a Thickness100mSurface Paint Thickness120m。

Duwan Environmental ProtectionQJBOperation Instructions for Submersible Mixers

Submersible AgitatorThe operation mode is local manual control. PLCTwo methods of automatic control.

1Manual Control

Submersible AgitatorEquipped with manual control, it is still possible to operate manually when automatic control is not achievable. That is, when the "selector switch" on the control panel is set to the manual control position, the machine can be manually operated on-site through the control switches, with the handle control buttons enabling separate control of the equipment's operation.

2.Automatic Control

Please provide the Chinese content you would like translated into American English. PLC In automatic operation mode, submersible agitationThe machine is automatically controlled by time. The submersible mixer operates continuously or intermittently.

When the switch is set to the fully automatic control position, the machine can operate in the following ways.

(1)Through the start button on the control panel.

(2)Through the control panel's time control.