| 摘要 |
A closing device contains an external cylindrical body with supports on the internal surface put on the retaining body, which includes a composite sliding feeder and lower body motionlessly fixed on the neck of vessel by supports, a single-seated valve with a ball and a seal, the composite sliding feeder, which consists of a hoist and a dispensing element, which has edges, which form a catcher of ball of single-seated valve in the position of closing device “opened”, a cover, which has a screw thread on the internal cylindrical body and supports on the external cylindrical surface for interaction with the supports of external cylindrical body, a hollow cylindrical cap with central dispensing hole and rings of obturation located on its external surface for guaranteeing leaktightness of seating in the neck of vessel. The lower body has a drain tube, which internal surface is made in the form of a polyhedron. The end of the lower part of hollow polyhedron of composite sliding feeder is equipped with a plug connected to it by means of cross connections. The upper face of said of hollow polyhedron at junction with figured flange of hoist forms a seat of on-off valve. Inside said hollow cylindrical cap a drain tube is inserted, into which in turn the lower part of the hoist with plug is inserted with possibility of vertical displacement. The external cylindrical body is fixed on the lower body by means of interaction of its supports and bearing surface of lower body. Round control hatch pointwise connected on its perimeter is made on butt end of external cylindrical body. |
