Bearing bush for gear pump, gear pump comprising bearing bush and melt conveying device

The invention discloses a bearing bush for a gear pump, the gear pump comprising the bearing bush and a melt conveying device, the bearing bush comprises a bearing bush outer main body and a bearing bush inner main body, the bearing bush inner main body is arranged in the bearing bush outer main body, the bearing bush inner main body is attached to the bearing bush outer main body, and the bearing bush inner main body is provided with a self-lubricating structure. By means of the self-lubricating structure, melt does not need to be used as a lubricating medium, melt materials are prevented from being solidified in a gap between the bearing bush and the shaft, and normal operation of the gear pump is guaranteed. 本申请公开一种用于齿轮泵的轴瓦及包括其的齿轮泵、熔体输送装置，其中的轴瓦包括轴瓦外主体、轴瓦内主体，轴瓦内主体设置于轴瓦外主体的内部，轴瓦内主体与所述轴瓦外主体贴合设置，轴瓦内主体设置有自润滑结构。通过自润滑结构，可以不必使用熔体作为润滑介质，避免熔体物料在轴瓦和轴之间的缝隙中凝固，确保齿轮泵的正常运行。