Packer

The utility model discloses a packer belongs to the oil production equipment field. Packer includes the top connection, upward center tube, lower center tube, attach fitting, lower clutch, outer center tube, balance mechanism, rubberizing cylinder base, at least one packing element, lower packing element seat and seat seal a deblocking mechanism. The utility model discloses a set up balance mechanism in the lower extreme outside of top connection, sit at packer and be honored as a queen, balance the effort that receives through balance mechanism on rubberizing cylinder base and the lower packing element seat to prevent that at least one packing element from going upward or moving down, and then avoid the utility model discloses a when there was pressure differential in both sides from top to bottom, at least one packing element was worn and torn because of going upward or moving down, guarantees the utility model discloses a life, and guarantee the utility model discloses a sealed effect. 本实用新型公开了种封隔器，属于采油设备领