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Dec 29, 2023

Causes and solutions for abnormal vibrations of dissolved air flotation machines

Main features of air flotation machine:

1. High efficiency, saving land resources, and large workload;

2. The equipment structure is simple and uncomplicated, the production process is simple, and it is easy to maintain and repair;

3. During use, it can effectively eliminate the adverse phenomenon of sludge expansion that affects production;

4. The flotation process is achieved by aeration into the water. The aeration process increases the dissolved oxygen in the water to be treated to a great extent, provides favorable conditions and foundation for the subsequent operations of sewage treatment, and is conducive to the removal of wastewater. of surfactants and odor.

The working environment of the air flotation machine is highly corrosive and it can operate continuously all year round. This causes the air flotation machine to vibrate greatly and requires frequent inspection and replacement of bearings, impellers, shafts and other parts.

The main cause of air flotation machine vibration is bearing problems:

1. During the use period of the bearing, the lubricating grease is not sufficiently moistened, resulting in the bearing not being moistened when operating under long-term load, causing the bearing to be damaged.

2. Due to the limitations of the production process, the processed roller bearings cannot accurately locate the center point, resulting in the failure of normal operation due to axial force, resulting in loud noise and bearing wear.

After long-term immersion in water, the grease will continue to slide into the water during operation. After the air flotation machine has been running for a period of time, the bearings will be in a dry grinding state, resulting in bearing wear and increased vibration of the air flotation machine. Solve this problem The key is to stop the calcium-based grease from slipping into the water. Therefore, it is necessary to carry out technical improvements on the shaft and bearings. That is, a stainless steel grease sealing cover is added to the connection part between the rear end of the bearing and the shaft to avoid grease leakage and dry wear of the bearing to avoid bearing wear.

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