Vibrating screen torsional vibration troubleshooting

The vibrating screen is divided into a linear vibrating screen and a circular vibrating screen. The vibrating screen has a simple structure, reliable and convenient operation. Therefore, it has been a type of vibrating screen equipment used in mining plants. The "torsional vibration phenomenon" of the vibrating screen will not only seriously affect the screening efficiency of the equipment, but also cause different degrees of damage to the equipment structure.

1. In the production process of the vibrating screen, a fixed frequency vibration force is generated due to the effect of the equipment's excited vibration force. Therefore, when any production link fails during the operation of the vibrating screen, it will affect the next production process.

2. When the direction of the excitation force generated by the vibrating screen vibrates or deflects, or the spring damping parameters of the vibrating screen and the failure of different components cause the screen box to produce a "torsional vibration phenomenon", accompanied by Material deviation, resonance, and stagnation on the vibrating screen.

Different parts under the torsional vibration force will be subjected to excessively concentrated vibration, which will cause uneven distribution of the equipment's vibration force. Serious vibration of the screen box will occur, which will ly shorten the service life of the screen device and cause different degrees of production. Impact. So how do we fix it when the torsional vibration phenomenon appears in the shaker?

First、 Design and manufacturing

1. Check whether the screen frame is a standard rectangle, not a parallelogram.

2. Check whether the 4 spring supports of the sieve machine are in a uniform level during the design and manufacturing process, and whether the selected spring stiffness is the same.

3. Whether the self-synchronization between the two vibrators is normal.

4. Can the phase angle adjusted by the main and auxiliary migraine blocks of the vibrator on the two sides of the unified axis be consistent, because it affects whether the generated excitation force is consistent.

Second, the device

1. Can the 4 spring supports of the sieve be installed on a uniform level, and whether the current tightening amount is the same, and the error cannot exceed 5mm.

2. When the universal joint is installed, can the phase angles on both sides be the same, and other reasons should be further judged based on the detailed screening machine and operating conditions.

Problems that occur during the use of the vibrating screen or other vibrating screens should be dealt with in a timely manner to avoid delay in production and then cause er losses.