Vibrating Screen

Vibrating Screens are designed by our company through absorbing Germany advanced technology. It is equipped with adjustable amplitude, long drip line, multi-layered screening with distinct griller and high efficiency.

Vibrating Screen

Cause analysis and treatment method of vibrating screen

According to the principle of fracture mechanics, the vibration of the sieve frame in the process of working will cause bending fatigue, so that the local deformation or vibration of the screen frame and side plate will be prone to occur. The vibration cracking of vibrating screen is mainly caused by the following several reasons:

1. damping spring

Spring after long-term use, because the rubber aging or long-term stress and make the spring permanent deformation of the spring failure caused by the vibration sieve 4 groups of damping spring seat pivot level of different parts, lead to vibrating screen amplitude is inconsistent, resulting in crack or parts of shaker link connector joint crack.

Solution: should regularly check the vibration damping spring, and spring material generally choose 60Si2MnA, heat treatment hardness should reach HRC45-50.

2. eccentric wheel's heavy vertical line does not coincide with the natural heavy vertical line

Install the exciter, connected with the universal coupling vibration exciter, drive shaft torque, there will be corresponding to the eccentric plumb line and natural plumb line do not overlap, resulting in the rotation of the eccentric wheel is not synchronized, each part of the amplitude vibrating screen vibrating screen appear inconsistent, connecting parts or fittings welding crack mouth cracking.

The solution is to install the exciter and check the overlap of the heavy and vertical lines of the eccentric wheel. Periodic shutdown check.

3. sieve plate thin

The reason for the thin sieve plate is the fracture of the screen frame.

Solution: the best way to solve the problem is to properly thickened plate, or near the side of the vibrator plate to enhance the local increase of body rigidity, so that the screen frame is not easy to tremble and fracture. Repair welding, weld to along the longitudinal direction of the sieve frame, and definitely not a transverse weld tube, or more from the transverse weld beam fracture.