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Failure inspection of explosion-proof centrifugal fan


1. The common coupling pointing method is uncomfortable for high temperature electric fans.

Explosion-proof centrifugal fans are common. When adjusting the coupling between the anti-corrosion centrifugal fan motor, fluid coupling and high temperature electric fan, two key methods are used: this method is based on the auxiliary tablet computer to accurately measure the shaft containing the gauge. Shake in the direction and radial direction; this method is when the half couplings of the two anti-corrosion centrifugal fans do not touch each other, use a dial indicator to fix it and rotate the half couplings to bounce in the axial direction and the inner hole.

2. The effect of lotus coupling must also be properly measured to calculate the harm of the difference in inflation.

After the explosion-proof centrifugal fan uses the described method to stop the coupling direction of the anti-corrosion centrifugal fan and the parallelism is controlled within 0.05 mm, everyone often incorrectly thinks that it is an idealized state of coupling. The key to this kind of misunderstanding is that it has not paid special attention to the hazards of the difference in the expansion of the electric fan, the hydraulic coincidence and the motor axis under hot and cold conditions. Some people have already paid special attention to the hazards of the escalation difference, but incorrectly believe that the temperature of the fan will be higher when the fan is running. Therefore, the cold axis should be low, and the high-temperature natural environment where it is located is incorrectly used as the basis for measuring high thermal deformation.

3. When installing the anti-corrosion centrifugal fan bearing end cover, it can safely prevent the fixed end and the random end device from being wrong.

In order to integrate the explosion-proof centrifugal fan into the thermal deformation caused by the high-temperature natural environment of the anti-corrosion centrifugal fan shaft, the manufacturer planned an inaccurately positioned rolling bearing at the end of the anti-corrosion centrifugal fan. Accurate positioning The rolling bearing must be rigorously and accurately positioned during the entire installation process, and the swelling side of the rolling bearing is not restricted at will. If it is installed and exchanged, the shaft's arbitrarily expanding and retracting will be restricted, which will result in a safety accident for machinery and equipment. For this reason, when installing the anti-corrosion centrifugal fan, the commonly used prevention is to fix the fixed end and the optional bearing end cover.

Overview of explosion-proof centrifugal fans

Structure of explosion-proof centrifugal fan