Internal wear-resistant structure of coal mill

The utility model discloses an internal wear-resistant structure of a coal mill, which comprises a wear-resistant bushing, the wear-resistant bushing is formed by stacking a plurality of bushing units from top to bottom, the plurality of bushing units can be spliced into wear-resistant bushings with different height requirements, and each bushing unit is formed by four detachable bushing bodies. And the lining body can be in rotating contact with the coal. The wear-resistant bushing is formed by splicing the bushing units and the minimum part bushing body, so that the wear-resistant bushing can be produced on a large scale and is convenient to transport, the whole assembly can be realized through the bushing body on site, the operation and use cost is reduced, only the corresponding damaged bushing body needs to be replaced subsequently, and the service life of the wear-resistant bushing is prolonged. And a plurality of rotating shafts are rotationally mounted on the inner wall of the bushing body, so that af