END GATE Russian patent published in 2010 - IPC F16L45/00 F16J13/16 B08B9/00 

FIELD: machine building.

SUBSTANCE: invention can be implemented in designs of chambers of start-up and reception of flow projectiles at operation of pipelines, particularly pipelines of big diameters (over 500 mm). The end gate of the chamber for start-up and reception of flow projectiles of mains consists of case 1 with an orifice of oval shape, of a flap 5 and of a unit for flap opening and closing. The unit is made in form of a rotary spaced truss 2 with axial 3 and radial 4 joints mounted in centre of body of cover 5. An element of gate sealing is installed in an oval flange of cover 5. Fixation unit 7 with lead-screw 8 is mounted on joint 6 attached to truss 2. Brackets 9 and pins 10 are arranged on case 1 for fixing or releasing rotary truss 2.

EFFECT: reduced metal consumption and simplified maintenance and repair.

4 dwg