QJB1.5/6-260/3-980S
Wastewater Agitator Installation Diagram
QJB Submersible Flowing Agitator Price
Submersible mixer, main components and materials
Duwan Environmental QJB1.5/6-260/3-980S Submersible Agitator
Supply Range
The submersible mixer provided by Jiangsu Du'an Environmental Protection should be a complete unit, including a guide rod, lifting device, underwater cable, fixing bolts, fasteners, and all necessary accessories for installation and safe operation.
2. Technical Requirements
Submersible mixers should be capable of continuous and intermittent operation under full immersion conditions. They must maintain vibration-free and smooth operation throughout the entire operation process. The product design lifespan is 15 years, with a first-time fault-free operation time of 8,000 hours.
Each submersible mixer must be capable of operating in wastewater, facilitating the flow of the wastewater.
The submersible mixer rotates smoothly without any jamming, stalling, or vibration.
Submersible mixers should undergo a sealed air pressure test with a pressure of 3 kg/cm², lasting for 5 minutes without any leakage.
Each submersible mixer should be equipped with a stainless steel rod and stainless steel wire rope for free lifting and turning.
1) Control Room
The motor control room has an IP68 protection rating, which must be completely sealed from any surrounding liquids.
2) Cooling
The motor's cooling is achieved through heat conduction from the stator to the housing.
3) shaft seal
Utilizes an independent high-quality sealing system to ensure that in the event of lower seal failure, liquid entering the stator chamber will not come into contact with the bearings and stator. The mechanical seal is made of corrosion-resistant silicon carbide/silicon carbide, with a pH range of 6-9 for the medium. The mechanical seal should be maintenance-free, capable of withstanding thermal shocks, and exhibit good emergency operating characteristics.
Manufacturers should ensure that the service life of mechanical seals is not less than 25,000 hours.
4) Axle
The motor shaft transmission is a single shaft, which is reliably sealed and does not come into contact with any liquids.
5) Submersible mixer impeller
Utilizing a progressive anti-torsion curve design, the impeller features a stamping structure, which is lightweight yet highly durable with excellent balance. The optimized impeller surface is self-cleaning, preventing blockage and slag buildup.
Flow guide cover included, which serves to straighten the flow, enhancing axial flow and directionalism, and increasing the circulation flow rate.
6) Electric Motor
The motor should be a three-phase squirrel-cage motor, 3-phase 380V, 50Hz, with protection grade IP68 and insulation grade F. The motor should be equipped with...Please provide the Chinese content to be translated.Under heavy mixing loads, there will be no overload. The motor starts no less than 15 times per hour, and the average temperature rise of the stator winding does not exceed 80°C. The stator should be heat-pressed into the stator chamber, and bolts, pins, and other connecting devices requiring drilling in the stator chamber should not be used.
7) Bearings
The impeller shaft is supported by a double-row angular contact ball bearing and a single-row deep groove ball bearing. To ensure long-term and reliable operation, NSK imported bearings are used, with a service life of not less than 100,000 hours.
8) Cables and Cable Seals
The motor should be equipped with control and power underwater cables, and be sealed reliably. If the power cable is a multi-core cable, each cable should be sealed individually. The cables should be inserted into the junction box and sealed with reusable rubber gaskets; the use of resins or other canned sealing materials is not permitted. Each cable should be provided with a cable net or cable clip to hang the cable on hooks and bear the weight of the cable.
9) Leak Sensor
Provide a sensor for detecting liquid leaks within a sealed chamber. All signals should be monitored individually and alarm signals issued separately before any severe damage to the impeller or motor occurs.
10) Thermal Protection
Each phase of the motor is protected by a normally closed temperature sensor. The three sensors should be connected in series, and these sensors should protect the phase connections at 140°C Celsius, and be connected to the control cabinet.
11) Installation of Lifting System
Suppliers must provide a complete set of installation and fastening materials for the submersible mixer. The installation system should include guides, wire ropes, and be equipped with an arm-type lifting frame and a hand-cranked hoisting device.
3. Primary Materials
Motor Housing: Cast Iron HT200
Propeller: 316L stainless steel and above
Propeller shaft: Stainless Steel 420
Mechanical Seals: Corrosion-resistant Silicon Carbide/Silicon Carbide
Steel Wire Rope: 304 Stainless Steel and Above
Bolts, nuts, washers: Stainless Steel 304
Guides, brackets: 304 stainless steel
Lifting Frame Stainless Steel 304
For use with a 304 stainless steel field control box, one control per box, with PLC signal interface.
Each set of submersible mixer comes with a local control box.
Field control box requirements are as follows:
(1) Equipped with buttons and signal lights, all control boxes feature a unified color scheme: red for stop, green for operation, yellow for fault, and blue for power indication.
(2) Order the conversion transformers for motor protection along with the equipment.
(3) The start/stop button should have two sets of contacts, and the emergency stop button (with a mushroom head) should remain in the pressed position.
(4) Terminals use wire terminals.
(5) With cable connector.
(6) Protection Rating: IP65
(7) Reserve PLC interface; each unit requires control from both the on-site control cabinet and the central control room.
(8) A 3P-32A circuit breaker must be installed and wired within the site control line for the owner's future maintenance of temporary power connections.
(9) Ventilation louvers should be provided on both sides of the control box, with a cooling fan installed at the bottom.
Submersible mixer accessories and materials
A list of spare parts for normal operation within the warranty period of two years; configuration parameters; flow field diagrams; selection reports; equipment dimension drawings; key equipment features; performance guarantee letters, and other relevant documents.
Two-year warranty
Offer installation guidance service
