The vibrating screen works by reciprocating rotary vibration generated by vibrator excitation. The upper rotating weight of the vibrator causes a plane to oscillate the surface of the screen, while the lower rotating weight causes the screen surface to produce a cone-shaped rotating vibration. The combined effect of the vibrating effect causes a complex-rotating vibration of the screen surface. Its vibration trajectory is a complex space curve. The curve is projected as a circle on the horizontal plane and an ellipse on the vertical plane. Adjust the excitation force of the upper and lower rotary weights to change the amplitude. Adjusting the spatial phase angle of the upper and lower weights can change the curve shape of the screen movement trajectory and change the movement trajectory of the material on the screen surface.

Scope of application:
Vibrating screens are mainly used in mining, coal, smelting, building materials, refractory materials, light industry, chemical, pharmaceutical, food and other industries.

Classification of vibrating screens:
Vibrating screening equipment can be divided into: vibrating screen for mining, light fine vibrating screen and experimental vibrating screen according to the weight.
1. Mine vibrating screen can be divided into: high-efficiency heavy-duty sieve, self-centering vibrating screen, elliptical vibrating screen, dewatering screen, circular vibrating screen, linear vibrating screen, etc.
2. Light fine vibrating screen can be divided into: vibrating screen, linear screen, straight screen, ultrasonic vibrating screen, filter screen, etc.
3. Experimental vibrating screen: slap screen, top-type vibrating screen machine, standard inspection screen, electric vibrating screen machine, etc.
According to the material running track can be divided into:
1. According to the linear motion track: linear vibrating screen (the material moves linearly forward on the screen surface)
2. According to the circular motion track: circular vibrating screen (materials make circular motion on the screen surface) structure and advantages
3. According to the reciprocating motion track: fine screening machine (material reciprocating motion on the screen surface)

The main advantages of the vibrating screen:
1. Due to the strong vibration of the screen box, the phenomenon that the material blocks the sieve hole is reduced, so that the sieve has high screening efficiency and productivity.
2, the structure is simple, and it is convenient to remove the screen surface.
3. The energy consumed per ton of material is less.

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