Vibrating screen is a filtering mechanical separation equipment used for mud solid phase treatment. It is widely used in mining, building materials, transportation, energy, chemical industry and other industries. Vibrating screens are mainly divided into linear vibrating screens, circular vibrating screens, and high-frequency vibrating screens. The vibrating screen is composed of a vibrator, a screen, a suspension device, a transmission device, etc. The screen is an important part of the vibrating screen. However, too fast damage to the screen is one of the common problems of the vibrating screen. What causes the life of the screen to be short? , How to improve its service life, Bellian experts will analyze it deeply for you today.
The main reasons for the short service life of the vibrating screen are clay accumulation, wrong steering of the motor, loose fit between the screen and the screen frame, and poor quality of the screen. How to solve these problems, we will further analyze below.
1. Clay accumulation
The vibration amplitude of the vibrating screen is too small to effectively overcome the viscous force of the clay, causing it to accumulate on the screen and quickly damage the screen.
Solution:
1. Increase the vibration amplitude;
2. Use sprayed water to flush the screen and clay to reduce the viscosity, but this method is only suitable for occasions where water is allowed;
3. Adjust the angle of the screen at the sand discharge port downward, which is beneficial for the material to be discharged by gravity;
4. Change the mesh number of the sieve or adjust the flow rate of the single sieve, so that the material can be discharged smoothly.
Second, the motor steering error
When debugging the steering of the motor, the on-site operators believe that as long as the material moves forward, it is ok based on past experience, but this method is only applicable to linear screens. If the motor rotates inward by mistake, although the projection angle is also 45° forward, the material has the force of rolling backward. At this time, the forward moving speed is much slower, and the residence time on the screen is long, and even the material cannot be discharged. .
Solution:
1. When the screen box is running, press the stop button of the electric control box. At this time, the vibrating screen will stop slowly. Observe the elliptical track formed by the small dots on the side plate when the vibrating screen is running, and roll to the sand outlet for the correct direction. ;
2. Remove the vibrator guard and check whether the eccentric shafts are all rotated outward;
3. Replace any two phase wires in the incoming power supply of the electric control box, sprinkle some sand on the screen, and the one with the faster sand discharge speed is the correct direction.
3. The screen mesh and the screen frame are not tightly fitted
The screen cannot be reliably contacted after the rubber strips supporting the screen are worn; the screen is not properly tightened.
4. The quality of the screen is poor
The screen generally has an upper sieving layer and a lower stress layer, and the two layers are required to be closely bonded. If the screen process is poor, when the stress layer at the bottom of the screen is tightened, the sieve layer is not tensioned. , The throwing force of the material is greatly reduced during work, and it cannot be screened and discharged smoothly. Solution: Replace the high-quality screen.
Henan Bellian Mining Machinery Co., Ltd. is a leading enterprise in the mining machinery industry. The company's main products include four series of sand and gravel equipment, mineral processing equipment, building material equipment, and grinding equipment, with hundreds of types, and its business covers more than 160 countries around the world. and region. All products of the company have passed ISO9001, CE and GOST international quality system certification, and the products are durable, stable and reliable in performance.
