Malfunction Analysis of the Linear Vibrating Screen

Linear vibrating screen is widely used in several industries such as mining industry, chemical industry, food industry, fertilizer industry etc. The screening efficiency of linear vibrating screen is high. Besides, it has high screening precision, high productivity rate, long live span and low energy consumption. The principle of the operation is very simple too. But, due to time consuming, malfunction of the machine will happen. There are five common malfunction of linear vibrating screen:

 

1.Linear vibrating screen might not operate or the vibration amplitude is too low. If you are facing this kind of situations, check the accessibility of the motor and make sure that the voltage of the electrical circuit element is in a normal condition. Besides, you need to make sure that there is no over accumulation of materials on the screen surface. Check the exciter coupling bolts. If the bolts loosed, tighten it. Check whether the grease is caking or not. At the same time, you can clean the overhaul shaker and then adjust the position of the eccentric shaft or the vice eccentric position.

 

2.Uneven spreading of materials on the screen surface. This might be cause by low rigidity of the screen box, and loosening of the coupling bolts. Besides that, the horizontal screen box is unable to identify. The problem might be cause by the malfunction of the spring supporting seat and the spring. This problem can be settled by changing a new spring or change the bearing size. Other than that, uneven spreading of the materials might be cause by damage of the screening mesh. Change the screening mesh will do. 

3.Poor sieving efficiency due to improper operation procedure. Clogging of materials on the sieving mesh and increase in the water content of the materials might reduce the sieving efficiency. Increase in the quantity of the fine materials will affect the sieving efficiency too. Another problem that causes poor sieving efficiency is the screening mesh. Both sides of the screening mesh must tighten. 

4.Rotation of the linear vibrating slowed down and heat up the bearing. If this kind of situation happened, grease or lubricating oil should be applied. If same thing happen again after the grease oil is added, this might be cause by the quality of the grease oil. Bad quality of grease oil will cause the bearing to jam. 

5.Cracking at the side wall of the linear vibrating screen, beams broken, damage of some structural part. These usually happened due to long working hours of the vibrating screen. There are several impact that will cause cracking at the side wall of the linear vibrating screen: 

     <1>The high-strength bolts are too tight

     <2>Deformation of the spring causes the height of the spring seat to be unequal.

     <3>Inappropriate weight of the eccentric

 

There are some solutions to prevent the problems such as replacement of the damaged parts, tighten the bolts, and punch two holes (6m/m) at the both front part of the side wall in order to prevent crack extension. Lastly, regular maintenance of linear vibrating screen is needed to prevent these problems. 

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Henan Pingyuan Mining Machinery Co., Ltd is the most professional manufacturer of Belt conveyor, and Vibrating screen, Bucket elevator, Screw conveyor, Scraper conveyor using the world's most advanced technology, we are willing to serve every company to meet your custom needs. Our goal is "be the future global leader of mining machinery industry". Have any questions, please contact us without any hesitation.