Duwan Environmental QJB2.2/4-1400/2-56/P Submersible Propeller CAD Installation Drawing
QJB2.2/4-1400/2-56/P
Diving Propulsion Device CAD Installation Diagram
Aeration渠推流器 selection
Shuntian Gearbox Reducer
Impeller Material: Polyurethane
Cable - 10 meters
Duwan Environmental QJB2.2/4-1400/2-56/P Submersible Propeller Pump Technical Description
（1）DivingFlow controller construction
Each propeller should be designed as an integrated unit, featuring a sealed connection, and be submersible. All components of the propeller, including the motor and gearbox, should be capable of continuous operation underwater. The propeller is driven by a submersible motor via a reduction gear. The rotating head is streamlined in a cone shape, with a compact structure.
All major components of the flow diverter in contact with the liquid, excluding the bracket and blades, should be gray cast iron.ASTM A48 Class 35B,Or DIN 1691 GG25The surface is smooth, free of sand holes, blow holes, or other defects. The shell thickness should be sufficient to withstand water pressure and other loads.
All nuts, bolts, and washers AISI 316 stainless steel.
The flow controller should have a machined surface on the critical contact area requiring a water-tight seal, utilizing metal andMetal contact, with nitrile or fluorinated rubber O Formed rings, cannot be used for sealing applications requiring a certain torque to achieve tightness, and gaskets made of rubber, paper, or chemical compounds with a rectangular cross-section. Secondary sealing compounds, elliptical sealing rings, wool, or other devices are not to be used.
All cast iron surfaces on the external part of the streamer that come into contact with liquid should be coated with epoxy resin for protection.
Flow controllers and their accessories, as well as cables, should be capable of continuous immersion at greater depths. 20 The rice submerged underwater.Will not lose its watertightness.
（2）Propeller
Propellers should be capable of handling regular sewage. All propellers are hydraulically balanced, tangle-free, and self-cleaning in design. Propellers should be meticulously machined and surface treated. Propellers can adjust the motor output power for efficient mixing and propulsion of the pool bottom sewage.
The propeller should have two to three blades. All blades should be of the same design, featuring a swept-back configuration, low RPM, and low energy consumption, with even spacing between them.
The blades must be fully cast with reinforced spheroidal cast iron and polyurethane, ensuring a solid construction. The blades should possess“FlexibleAnd can absorb varying hydraulic loads. Metal blades are not accepted due to their lack of elasticity. Each blade is fitted with a cast iron shaft and mounted in a socket on the side of the wheel housing. The wheel housing is secured to the shaft with a single key lock.Ends, sealed with protective caps and should use a locking gasket system.The propeller has passed dynamic balance testing.
（3）Gearbox
The fluidizer must be driven by a planetary gear box. The gear box housing and the fluidizer housing should be integrated as a single unit, shaped as a streamlined cone, with a smooth transition to the hub and motor housing for enhanced stability and hydraulic characteristics, thereby improving the overall efficiency of the fluidizer. The gear box should be equipped with high-precision, high-efficiency, low-load bipolar planetary gears, with gear teeth made of highly wear-resistant alloy steel. The gear box should be filled with oil for lubrication and cooling, as well as to minimize the impact of leakage.
The gear box should be manufactured by an internationally renowned transmission specialist. The design service life should not be less than 100,000 hours.
（4）Axle
The motor shaft and propeller shaft are connected through a gearbox, with the shafts made of wear-resistant stainless steel. Both the propeller shaft and the motor shaft can withstand all axial and radial loads. The propeller shaft is fully protected by mechanical seals and radial seals, ensuring complete isolation from liquids.
（5）Bearings
The propeller motor shaft should rotate on two ball bearings, with the propeller shaft supported by two cone roller bearings. All bearings are high-quality, maintenance-free bearings lubricated with grease, capable of withstanding axial and radial loads.
Bearings are 0.5Qn< Qn<1.25 Qn Operating within the scope（ Qn For optimal operating conditions）BearingsService life should be 100,000 Over 1 hour.
（6）Motor
The submersible motor should be a three-phase squirrel-cage induction motor. The protection rating of the motor is IEC IP68 ratingInsulation grade F Grade155°C. An appropriate rated power should be ensured to prevent the pusher from overheating during operation.Overloading occurred. The motor should be capable of starting every hour. 20 The motor shaft and rotor have passed dynamic and static balance tests.
Motors should be designed to operate at higher Operate at 40℃ (104°F), capable of immersion and continuous stirring of liquids at temperatures up to 40℃, with the average temperature rise of the stator winding not exceeding 80℃.
Motors and cables must be capable of handling larger 20 Maintains waterproofing after continuous use even when submerged deeply.Combine IP68 Protection rating.
Submersible motors should be sufficiently cooled by the surrounding agitating medium; they should not rely on cooling jackets or external cooling.However, the system should be equipped with insulating oil in the motor room to ensure excellent insulation and cooling properties.Prevent leakage from damaging the motor.
To monitor the temperature on each phase winding, a thermosensitive switch should be installed in each phase stator winding coil. Thermoswitch set to open at temperature 130°C, and connect to the control cabinet, interfacing with the control relay.
（7）Mechanical Seal
A mechanical seal and two radial sealing rings should be fitted between the gear box of the pump and the propeller. The radial sealing rings are mounted on a bronze sleeve, providing additional protection to the mechanical seal, and should be easy to replace. The shaft seal system should include a sealing oil cavity, with the mechanical seal operating within this cavity. A pair of radial sealing rings should also be installed between the motor room and the gear box.
The mechanical seal should be maintenance-free and can rotate clockwise or counterclockwise without affecting or losing its sealing function. The mechanical seal is made of silicon carbide material, featuring excellent mechanical strength and resistance to thermal shock. The pH range of the medium should be 4-10 range.
The design service life of the mechanical seal should be greater than 25,000 hours.
（8）Cables and cable seals
The Jiangsu Du'an Environmental Protection QJB2.2/4-1400/2-56/P low-speed impeller motor should be equipped with a submersible cable, which should be a single cable containing both control and power cores. The cable shouldEquipped with a separate and reliable cable import. The cable dimensions should comply with IEC Standard with sufficient length to connect to junction boxes or on-site control cabinets without splicing. The cable connection to the junction room should be sealed with reusable double-track compression rubber sleeves; sealing with epoxy, silicone resin, or other secondary sealing systems is not permitted. Cable replacement should be ensured. The cable outlet is axial, flush with the outer surface of the motor housing.Arrangement, securing the cables with cable clamps and tensioned steel cables to prevent movement due to water flow impact, and to avoid snagging during lifting.
Duwan Environmental QJB Submersible Thruster, the operation method of the submersible propeller is local manual control. Two PLC automatic control methods.
Manual Control
The submersible thruster should be equipped with manual control, allowing operation even when automatic control is not achievable.Achieve manual control. Namely: when the control panel on the cabinet is“Select Switch”Placed in manual control position, the machineThe operation can be manually executed on-site via control switches, with the handle control buttons allowing separate control of the equipment's operation.
2. Automatic Control
Please provide the Chinese content to be translated. Under PLC automatic operation, the submersible propeller 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 modes.
(1) Through the start button on the control panel. (2) Through the time control on the control panel.
Low-speedDivingStreamingUnit's on-site control box
Field control box for equipment packageMeets all design specifications, while complying IEC Standard or better than standard IEC StandardNational Standards; Compliant with local climatic conditions.
Each set of dive thrusters is equipped with a local control box. The specifications for the on-site control box are as follows:
（1) In addition to the internal buttons and signal lights, there are 35 terminal connectors included.
（2) Order the converter for motor protection and the equipment together.
（3) The start/stop button should have two pairs of contacts, and the stop button (with a mushroom head) should remain engaged when pressed.
（4) To ensure a seamless connection between the field control box and the entire plant control system, the terminal blocks within the control box are fitted with Weidmüller products.
（5) With cable connectors.
（6) Protection Level: IP65.
（7) Reserve PLC interfaces; each device requires control from both the on-site control cabinet and the central control room.
（8）Material of the on-site control box: outdoor use 304 Stainless steel, carbon steel coated for indoor use, cabinetColor selection is determined by Blue Deep Group.
（9) Components in the control box are of ABB, Schneider, Siemens, or equivalent brands.
Two-year warranty
Offer guidance for installation and debugging
