Modular recoverable sealing screw

The utility model provides a modular recoverable sealing screw, includes interior pole and two outer poles, an outer pole is connected respectively at the both ends of interior pole, it is equipped with the stagnant water piece still to overlap on the interior pole, the both ends of interior pole, the both ends of outer pole all are equipped with the external screw thread, the both ends of interior pole are equipped with a rubber and plastic toper end cap and nei ya hexagonal box spanner respectively, interior tooth hexagonal box spanner keep away from including the one end suit of template onthe pole and with interior pole threaded connection, the stub end of rubber and plastic toper end cap is including template settings and detachable suit outside the tooth hexagonal box spanner, outerpole passes the lumps of wood, template and interior tooth hexagonal box spanner in proper order and is close to a template end screw thread connection, be equipped with the stopper on interior toothhexagonal box spanner's th