Vibrating screen is designed for especially screening stone stock of quarry, and also for classifying products of such departments as coal separator, mineral processing, building materials, electricity and chemical industry, etc. Aggregate productivity of small and medium crushing and screening equipment, often using only one screening machine to complete the pre-screening and examination screening. It also undertakes independent screening, the stone products according to different size specifications of separation.
Closed system, pre-screening process should be in a medium and fine crushing before the screening examination should be at the break, the actual layout, taking into account the arrangement of belt inclination can not be too much, so the screening machine is generally set the end of the device.
The vibrating screen uses the motor to drive the eccentric shaft to make the screen body periodically along with the direction of vibration force. The materials make circular movement on the screen to realize sieving. Circular vibrating screen consists of vibration source, screen body, screen mesh, shock absorbing device, base frame etc. It has the features of reasonable structure and long durability.
When the vibrating screen is working, under the effect of vibrator, the screen box and screen cloth will move on a circular, oval, or linear motion, which will make the material on the surface of screen disperse and move up and down. Thus, the fine particles can fall through the material layer and then expel from the sieve hole. And the bigger particles will continue to move forward under the effect of vibration.
In open systems, the screening machine naturally in crusher. In most closed-circuit crushing and screening section, with the screening machine, fine crusher installed in the same frame, after its location in the crusher: no open-circuit crushing and screening equipment, or product classification process for independent screening, the screening machine can be independently mounted on a frame. Screens position higher on the screen straight into the product, fine crusher, without the need for specialized transportation equipment.
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