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In this post we're going to introduce 3 types of vibrating screen, which includes:
Circular vibrating screen
Auto centering vibrating screen
Linear vibrating screen
Let's dive right in!
As the main equipment used in the screening operation, screening equipment is used for screening, dewatering and thickening in the whole mineral processing. The screening equipment can not only screen the qualified material before crushing, avoiding the over-crushing phenomenon and reducing the energy consumption of the crusher, but also check if the material is at suitable granule or not, and screen the material into several classifications for separation, increasing the processing efficiency.
At present, there are 3 types of vibrating screen widely used in the mineral processing, include circular vibrating screen, auto centering vibrating screen and linear vibrating screen.
Circular vibrating screen is suitable for the material classifying of the mineral, construction material, electricity,chemical industry and other departments. It can be used to dewatering, de-sliming, and de-medium. The circular vibrating screen uses the eccentric shaft plus eccentric block type vibrator to make the circular vibrating screen more stable and high-efficient. It is named as circular vibrating screen for its motion trail looks like a round. Besides, Circular vibrating screen has adopted springs to reduce the running noise effectively. Its ring-grooved lock bolt and plate screen box frame structure were featured with high strength and durability.
During the working of circular vibrating screen, the eccentric exciter block creates high speed through the motor and triangular belt. The screen box is inspired vibrating when the centrifugal force is big. The material on the screen is impacted by successively throwing.During this period, the smaller granules can be through the screen, the screen is finished.
As a traditional vibrating screen, auto centering vibrating screen is widely used in the screening of middle-to-fine granules. There are two types of auto centering vibrating screen: seating type and under-slung type.
Auto centering vibrating screen is featured with long service life, small noise and easy-to-repair. What’s more, the vibration amplitude and balancing quality of the screen can be adjusted according to the production requirement. There is 3 to 5mm offset between the big belt gear and the eccentric shaft, which can balance the running routine during working, make the vibrating screen more stable.
Auto centering vibrating screen uses the motor to motivate the main bearing of the belt pulley during running. The centrifugal force from the belt pulley is added into the vibrating system. The force motivates the straining box to move as a circle. The eccentric block on the stress wheel can make sure the centrifugal force from it can be balanced by the centrifugal force from the rotation of straining box, which becomes an innovation balance. It makes the belt gear auto centering, and keeps a still distance between the bigger and smaller gear, which avoids the belt tight and loose.
Linear vibrating screen is used for the screening of fine granules, which is suitable for dewatering, de-sliming, de-medium and de-weighting-medium. The angle of the screen surface can be adjusted. The vibrating motor is used as the vibration exciter. The consumption is low and the accuracy is high. There is little basic load and nothing to deal with specially. It is a complete sealed structure and autogenously throwing.The screen body is made up with the rolled plate, which is substance and reliable. The wear-resistance rubber in it prolongs the working life of the linear vibrating screen.
Linear vibrating screen is motivated by a double vibrating screen, which reverse rotates at the same time. The excitation forces are neutralized on the crosswise and combined with the sifter. The material moves on a jumping linear trail by the excitation force and gravity.
The above are the common types of vibrating screen used in the mineral processing: circular vibrating screen, auto centering vibrating screen and linear vibrating screen. In the mineral processing process, the vibrating screen equipment used for different screening purposes, and the different screening equipment is also used for the different location of the production line. It is suggested to choose the reasonable vibrating screen according to the production process.