Apparatus and method for ultrasound screening

摘要

An apparatus for ultrasound screening with a screen frame a screen fabric arranged in the screen frame with at least one ultrasound converter for producing ultrasonic vibrations. Ultrasonic vibrations may be introduced into the screen fabric via sound-conducting connection with the ultrasound converter, and the location of the screen fabric at which the introduction of the ultrasonic vibrations into the screen fabric may be varied.

主权项

1. A device for ultrasound screening, comprising:
a screen frame with a screen fabric arranged in the screen frame; at least one ultrasound converter providing excitation of ultrasound vibrations; at least one means of operably introducing ultrasonic vibrations into the screen fabric, the means of introducing ultrasonic vibrations into the screen fabric is in a sound-conducting connection with the ultrasound converter, at least one of the means of introducing ultrasonic vibrations into the screen fabric being arranged operably movably in continuous direct contact relative to the screen fabric so that the place of the screen fabric at which the introducing of the ultrasound vibrations into the screen fabric by the means of introducing ultrasonic vibrations into the screen fabric occurs is operatively varied by continuous contacting movement of the means of introducing ultrasonic vibrations into the screen fabric relative to the screen fabric during operation, the means of introducing ultrasonic vibrations further comprising at least one movable means, the device for ultrasound screening further comprising:
a driving device for the movement of the at least one movable means of introducing ultrasonic vibrations into the screen fabric relative to the screen fabric, the movement including rotational movement relative to and in said continuous direct contact with the screen fabric and being movable to bring the means of introducing ultrasonic vibrations in contact with at least a portion of the screen fabric.