Seperated layer water injection sand setting ball seat

The utility model relates to a return and tell eccentric notes technical field, the in particular to seperated layer water injection sand setting ball seat of dividing of bridge type. The device's top connection, the overcoat, main part and lower clutch are from last to connecting in order down, the design of main part upper end is the ball seat, fender sand cap is connected to main part upper end ball seat, it is spired to keep off the design of sand cap upper end, it has the opening to open on the fender sand cap lateral wall, be equipped with central pore in the main part, be equipped with the well -flushing hole on the main part lateral wall, the center pore is linked together with the well -flushing hole, there is the ball at the main part upper end ball seat seat of honour, the ball seals up central pore, the ball upper end is equipped with the piece of blocking, it is equipped with the spring to block piece upper end, it has the sand setting passageway to open in the main part of fender sand cap outside annular space lower extreme. The utility model discloses a have the sand setting function, avoided intraductal foul or sand deposit to lead to sand to bury ball seat and the sealed not tight risk of ball seat to the ball seat position, realize that the accuse is pressed to open, stop annotating and guarantee the stratum when pressing and tell a little with putting, stopped the stratum excitement and shaked out and lead to sand to bury the danger of oil pipe post.