Back clearance structure and have its plunger pump of disappearing of miniature plunger pump

The utility model provides a back clearance structure and have its plunger pump of disappearing of miniature plunger pump relates to hydraulic pressure device field, the back clearance structure that disappears includes slider, nut, lead screw and compression spring, the slider sets up in the top of nut, slider and nut are equipped with the internal thread, the external screw thread intermeshing of slider, nut and lead screw, compression spring sets up in between slider and nut, compression spring's one end is supported and is held in the slider, and compression spring's the other end supports and holds in the nut. The utility model discloses a back clearance that produces because the long -term use of plunger pump is ageing is packed in the effect of compression spring's elastic restoring force, improves the performance of miniature plunger pump. 本实用新型提出种微型柱塞泵的消背隙结构及具有其的柱塞泵，涉及液压器件领域，所述消背隙结构包括滑块、螺母、丝杆及压缩弹簧，所述滑块设置于螺母的上方，所述滑块及螺母设有内螺纹，所述滑块、螺母与丝杆的外螺纹相互啮合，所述压缩弹簧设置于滑块与螺母间，所述压缩弹簧的端抵持于滑块，压缩弹簧的另端抵持于螺母。本实用新型通过压缩弹簧的弹性恢复