Duane QJB5.5/4-2500/2-63 Low-Speed Propeller Assembler and Installer
Low-speed Turbulence Series mixers are suitable for industrial and urban wastewater treatment plant aeration basins, producing a strong water flow with low tangential velocity, which is used for creating water currents in stages such as circulation, nitrification, denitrification, and phosphorus removal.
QJBOperating Conditions for the Submersible Mixing Pump
1、 During continuous operation, the medium temperature does not exceed40℃；
2、 MediumPHValue6-9。
3. MoreGreat Submersion Depth10m。
We recommend using Duwan Environmental's original equipment parts for the installation of the submersible propeller.
1Leaf assembly
Note:
Before installing the diving propeller, first select and adjust the angle of the angle adjustment plate based on working conditions.
Ensure both blades are installed at the same angle.
Step1Loosen the hub cap1Top Cover2Original Content: ）的螺钉（ Translation: The screws of ）3）(M16*80Left-hand thread)Remove the end cap.
Step2Insert a blade into the hub's hole from the top, positioning the blade's slot facing outward, and adjust the selected angle.4Insert the shaft into the slot of the impeller, connect it to the hub with two bolts, and use a hex wrench to tighten the bolt on the left side first.5), then tighten the screw on the right (6）。
To facilitate the installation of two blades, the hub is rotated.180oThen, install two blades using the aforementioned method.
Step3Please place the top cover and insert the two toothed washers.M16*80Left-hand threaded screws are being tightened.
2、Installation of Low-Speed Flow Meters
The rod and bracket are securely fastened in place using expansion bolts as required.
Install vibration dampers and sliding sleeves.
Manually lift the diving propeller with a hand-cranked gourd, slip the sleeve over the square guide rod, and ensure the lift is smooth and easy before placing the blender in position.
Gently and evenly lower the dive propulsion unit, ensuring it is correctly positioned. Keep the hand-cranked pulley's wire rope in a relaxed state.
Ensure cables are not wrapped around the impeller while the pump is in operation!
3Pilot operation
Prior to startup, the entire system is inspected by qualified professionals to ensure compliance with relevant regulations. The motor cables are properly connected to the power source.
During the initial debugging, ensure the impeller rotates in the correct direction. To check, suspend the submersible propeller on the square guide rod, plug in the power source, and observe from the impeller towards the motor; the impeller should rotate clockwise. If the rotation direction is incorrect, swap the two phases of the power cable. When multiple mixers are connected to the same control cabinet, check the rotation direction of each mixer individually.
Be sure to check the rotation direction to ensure that the rotating impeller does not injure staff and to stay away from the rotating impeller.
4Operational
After the trial operation runs smoothly, shut off the power. Place the submersible propeller along the square guide rod into the water and ensure it is properly installed. Reconnect the power and start the operation, checking for normal function.
5Oiling and oil change
Submerged Diver Propelling Streamer by ChanceThe gearbox has been lubricated prior to shipment. One operation.100Please replace the oil within an hour, and then every3-6Every month, we replace the lubricant with the brand number.90Numbered Industrial Gear Oil or20No. 1 Mechanical Oil. Approximately 1 liter.1.2Promotion.
The oil change should be performed as follows:
Submersible Flow ControllerPosition the unit, unscrew both top and bottom bolts, release the lubricant, then clean the oil chamber with cleaning oil, refill with new oil, and replace the new one.OType ring, tighten the bolt plug.
If water (in the form of a milky emulsion) is found in the oil being replaced, clean the oil chamber according to regulations, then refill with new oil and replace it.OThe type ring tightens the bolt plug. A recheck is required after three weeks; if the oil has turned into a milky emulsion again, inspect the mechanical seals and replace them if necessary (please contact our company or the maintenance service department).
