Air flotation technology has been widely used in the field of sewage treatment in recent years. It can effectively remove the precipitated light flocs that are difficult to remove in wastewater. It has been widely used in wastewater treatment and water supply and drainage industries.

Main features of air flotation machine:

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

2. The structure of the equipment is simple and not complicated, the production process is simple, and it is easy to maintain and repair;

3. In the process of use, it can effectively eliminate the unfavorable phenomenon of sludge bulking that affects production;

4. The air flotation process is realized by aeration into the water. The aeration process increases the dissolved oxygen in the water to be treated to a greater extent, provides favorable conditions and foundations for the subsequent operation of sewage treatment, and is conducive to the removal of sewage. of surfactants and odors.

The working environment of the air flotation machine is highly corrosive, and it can be operated continuously all the year round, which leads to the large vibration of the air flotation machine, and the bearings, impellers, shafts and other components have to be checked and replaced frequently.

The main reason for the vibration of the air flotation machine is the bearing problem:

1. During the application period of the rolling bearing, the lubricating grease is not enough to wet, resulting in the rolling bearing not being wetted under long-term load, resulting in the damage of the rolling bearing.

2. Due to the limitation of the production process, the roller bearings produced and processed cannot precisely and accurately locate the center point of the circle, resulting in the failure of all normal work due to the axial force, resulting in high noise and wear of the rolling bearing.

Under long-term immersion in water, the grease will continuously slide into the water during its operation. After the air flotation machine runs for a period of time, the bearing is in a dry grinding state, which leads to bearing wear and increased vibration of the air flotation machine to solve this problem. The crux of the matter is to stop the calcium-based grease from slipping into the water. Therefore, it is necessary to carry out technical improvement on the shaft and bearing. That is, a stainless steel grease sealing cover is added to the connection part between the rear end of the bearing and the shaft, so as to avoid grease leakage and dry grinding of the bearing to avoid bearing wear.

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