We understand that submersible mixers in wastewater treatment equipment possess powerful flow propulsion capabilities, comprehensive leakage protection, excellent dynamic and static sealing quality, small size, light weight, high efficiency, and long service life. They are mainly used in anaerobic tanks, anoxic tanks, equalization tanks, selective tanks, and sludge tanks in wastewater treatment plants.
Regular maintenance and upkeep of submersible mixers after commissioning are essential:
● Lubricating oil change: Submersible mixers typically require lubricating oil change every six months, using 32# machine oil. When changing the oil, carefully unscrew the oil plug to drain the old oil, noting any residual pressure in the oil gun to prevent oil spraying.
● Installation and disassembly of the submersible mixer mechanical seal: Installation should be performed in a clean environment, using pure lubricating oil as the assembly medium. First, clean all parts of the mechanical seal. Then, smoothly press the stationary ring of the submersible mixer seal into the positioning hole, taking care to protect the stationary ring sealing surface and avoid damage. Next, use the guide sleeve to install the dynamic ring onto the shaft, and close the oil chamber end cover, being careful not to bump the sealing surface of the mechanical seal. Disassembly should be performed in the reverse order described above.
● Bearing grease: Generally replaced during major overhauls. The amount of grease should be 1/3 to 1/2 of the bearing cavity clearance. High-temperature calcium-sodium based grease is recommended.
● Leakage protection for submersible mixers: If the leakage protection switch is triggered, it indicates that the mechanical seal on the motor side is damaged and needs to be inspected and repaired. Open the blockage in the oil chamber and drain the accumulated liquid.
When using a submersible mixer, pay attention to the above issues to maximize its performance and improve wastewater treatment efficiency. The suction chamber is located before the impeller inlet, guiding the liquid flow to the impeller; the pressure chamber mainly comes in three forms: spiral pressure chamber, guide vane, and spatial guide vane; the impeller is the core working component of the pump, consisting of a cover plate and intermediate blades.
Before starting the submersible mixer, fill the pump with liquid first, then start the centrifugal pump. The impeller rotates rapidly, and its blades drive the liquid to rotate. During the liquid rotation process, due to inertia, the liquid flows towards the outer edge of the impeller, while the submersible mixer's impeller draws liquid in from the suction chamber. In this process, the liquid inside the impeller flows along the blades. During this flow, the liquid exerts lift on the blades, and conversely, the blades exert an equal and opposite force on the liquid, doing work on it and allowing the liquid to gain energy and flow out of the impeller. At this point, both the liquid's kinetic and pressure energy increase.
By paying attention to these issues and performing proper maintenance, the submersible mixer can better perform its function, thereby improving wastewater treatment efficiency. In the wastewater treatment process, the submersible mixer plays a crucial role, ensuring the normal operation of the wastewater treatment system. Timely inspection and maintenance of the submersible mixer can extend its lifespan and ensure that the equipment is always in good working condition.
Before starting the submersible mixer, the pump must be filled with liquid, and then the centrifugal pump is started. The impeller rotates rapidly, and its blades drive the liquid to rotate. During the liquid rotation process, due to inertia, the liquid flows towards the outer edge of the impeller, while the submersible mixer's impeller draws liquid in from the suction chamber. In this process, the liquid inside the impeller flows along the blades. During this flow, the liquid exerts lift on the blades, and conversely, the blades exert an equal and opposite force on the liquid, doing work on it and allowing the liquid to gain energy and flow out of the impeller. At this point, both the liquid's kinetic and pressure energy have increased.
By paying attention to these issues and performing proper maintenance and upkeep, submersible mixers can better perform their function, thereby improving wastewater treatment efficiency. Submersible mixers play a crucial role in wastewater treatment, ensuring the normal operation of the wastewater treatment system. Timely inspection and maintenance of submersible mixers can extend equipment life and ensure that the equipment is always in good working condition.
