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It works by using the reciprocating rotary vibration generated by the excitation of the vibrator. The upper rotating weight of the vibrator causes the screen surface to generate plane whirling vibration, while the lower rotating weight causes the screen surface to generate conical surface rotation vibration, and the combined effect makes the screen surface generate compound whirling vibration. Its vibration trajectory is a complex space curve. Adjusting the exciting force of the upper and lower rotating weights can change the amplitude. And adjusting the spatial phase angle of the upper and lower weights can change the curve shape of the screen surface movement trajectory and change the movement trajectory of the material on the screen surface.

Correct installation of the screen The installation structure of the screen should be selected according to the size of the screen aperture. For large holes (the recommended diameter exceeds 60mm), it is recommended to use a bolt-type fixing structure. Due to a large amount of material processed by the large-aperture screen, it has a greater impact on the screen surface. The fixed form of the screen with other structural forms is easy to loosen. After the screen is loosened, it strikes each other with the support beam, which shortens the life of the screen. Improper use will affect the service life of the polyurethane screen . After selecting the correct polyurethane screen, it needs to be used reasonably to maximize the performance and service life of the polyurethane screen. However, this is easily overlooked by many users when using polyurethane screens.