1. Screen tension of vibration screen is not enough, resulting in unusual vibration, and the screen edge or at the package edge or damage. The mesh of vibration screen has inferior quality, screen generally have the upper layer and lower screening force level, which requires close fit between the two layers, if the screen pre-tensioning process is poor, when stretched the bottom of the screen force level, the screening layer is not taut, the work force will be greatly reduced when throwing drilling cuttings, this caused drilling cuttings can not be discharged.2. Vibration motor steering error when debugging the vibration screen, the site operator based on previous experience of single-axis vibrating screen and linear vibrating screen, they thought it is alright as long as the cuttings move forward on the line, but this method does not apply to balanced elliptical vibration screen. If the motor rotation towards inside, although the projectile angle is also a forward 45 °, but the cuttings have the ability to scroll backward, then the forward cuttings migration is much slower, an the cuttings will stay longer in the sieve, and even cause cuttings blocking.
