Device and method for transferring cotton fiber, and device for removing impurity in cotton fiber

A device for transferring a cotton fiber, comprising:

• a saw blade roller;
• a licker-in roller;
• a cotton-fiber support plate which is arc-shaped;
• a first cover plate;
• a guide plate;
• a windscreen plate;
• and
• two box plates arranged oppositely;
• wherein the two box plates are arranged at two ends of the licker-in roller and the saw blade roller, respectively;
• the first cover plate and the cotton-fiber support plate are arranged between the two box plates from top to bottom;
• a cylindrical cavity is enclosed by the cotton-fiber support plate and the first cover plate;
• an arc surface of the cylindrical cavity is provided with a first window and a second window arranged oppositely;
• the first window is communicated with an exit channel enclosed by the guide plate and the windscreen plate between the two box plates;
• the licker-in roller is arranged in the cylindrical cavity along an axial direction of the cylindrical cavity;
• the saw blade roller is arranged in the second window facing away from the exit channel;
• an axis of the saw blade roller is parallel to an axis of the licker-in roller;
• a gap between a surface of the saw blade roller and a surface of the licker-in roller is no more than 5 mm;
• the cotton fiber is capable of rotating with the saw blade roller to form a cotton-fiber floating layer;
• a linear speed of the licker-in roller is great than a linear speed of the saw blade roller during rotation;
• and a rotation direction of the saw blade roller is opposite to a rotation speed of the licker-in roller to allow the cotton fiber to be transferred from the saw blade roller to the licker-in roller.