Roller structure, pump body assembly, fluid machine and heat exchange equipment

The utility model provides a roller structure, a pump body assembly, a fluid machine and heat exchange equipment. The roller structure comprises a roller base body; one of the wear-resistant sheet, the roller base body and the wear-resistant sheet is provided with convex teeth, the other one is provided with grooves, and the convex teeth extend into the grooves, so that the wear-resistant sheet and the roller base body are movably connected in the axial direction of the roller structure. The utility model solves the problems of serious end face friction loss and larger leakage rate of the roller in the prior art. 本实用新型提供了一种滚子结构、泵体组件、流体机械及换热设备。滚子结构包括：滚子基体；耐磨片，滚子基体和耐磨片中的一个具有凸齿，另一个具有凹槽，凸齿伸入凹槽，以使耐磨片与滚子基体沿滚子结构的轴向可移动地连接。本实用新型解决了现有技术中滚子的端面摩擦损耗严重且泄漏量较大的问题。