Ultrasonic vibrating screen which causes abnormal

① ultrasonic vibrating screen is not installed correctly , the basic exciter shaft and the shaft is uneven or off-center too ( if connected with a universal coupling , more

prominent ) .

② shaker moving parts and apron feeder chute, hopper and other parts do not move between the card of a foreign body .

③ feeding inequality causes partial load, even without the screen surface while feeding .

④ sieve fixed is not strong or damaged , resulting in secondary vibration .

⑤ different positions of the support spring stiffness disparity or fracture occurred.

⑥ ultrasonic weight feeder vibration sieve and a first natural frequency and resonance frequency of the same .

⑦ exciter assembly is poor, such as the double box-type shaker , shaker vibration direction when the two angles are different. Will cause both sides of the sieve vibration

direction angle inconsistent.

⑧ ultrasonic vibrating screen design is unreasonable, improperly positioned center of gravity , the direction of the exciter force failed to pass the center of gravity , large

deviations .

⑨ in shaker box using two interconnected large vibrating screen , after several run after overhaul prone to unusual circumstances , such as torsional vibration , material

deviation, sieve plates fracture , etc., mainly due to the exciter is 2 is equipped with primary and secondary eccentric shaft composed of two axes and then by two identical

Gear is connected , this structure ensures two axes synchronized with the speed of reverse rotation, so that the two axes of the exciting force superimposed , resulting in a

certain angle with the horizontal exciting force , in fact, the exciting force of the force direction entirely by eccentric eccentric position of the decision, which rely on the

two gears being meshed

To determine the correct position of the correct position of the eccentric . Due to the direction and gear meshing force Centrifugal force causes change, such as two exciter

force direction angle occurs when the ultrasonic vibration sieve torsional vibration occurs . Similarly , when connecting two ends of the exciter shaft flange bolt holes

dislocation,

Also produced similarly to the above case . So, when these cases will occur shaker is not running properly , and one of the torsional vibration sieve harm even worse.