Basic conditions for the purpose of screening

发布时间：2019-12-17 点击次数：

Screening equipment is the most commonly used process equipment in the cleaning process. To achieve the purpose of screening, the following conditions must be met.

There must be enough screen holes on the screen surface to allow the specified materials to pass through. Appropriate sieve holes should be selected according to the purpose of the screening, the objects to be screened, and the form of motion of the screen.

The material must move relative to the screen surface. The screening equipment generally uses a screen surface with a small inclination angle and longitudinal vibration or plane rotary motion along the material flow direction. In order to allow the material to form a better automatic classification on the screen surface and have more opportunities to contact and pass through the screen holes, It is an important condition to generate reciprocating motion relative to the screen surface. To achieve this, the motion of the sieve surface is the main influencing factor. The sieve surface is usually a simple harmonic vibration. The displacement and acceleration of the sieve surface change according to the relationship of the sine function, that is, the direction and size are in an alternating state.

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