| 摘要 |
The invention relates to pipeline fittings, in particular to locking devices in which the gate is arranged as rotary valve and moves in plane normal to seat surface. The locking device has a sealed body (1) with horizontal inlet and outlet tubes (2, 3) with flanges (4,5), seat (6), rotary valve (7) fixed in the body (1) by means of hinge mechanism (8), and drive rod (9) that interacts by means of guide mechanism (10) with rotary valve (7) to bring the last one to position “closed”, “open” or “control” and installed in the upper vertical tube (11) of the body (1) provided with flange (12) and cover (13) connected to each other. According to the invention the outlet tube(3) is placed at angle α to inlet tube(2); seat (6) is placed at outlet tube (3); hinge mechanism (8) is arranged as fixed and movable holders (15, 16) connected to each other by means of hinge joint (17) and with possibility of relative displacement. Guide mechanism (10) is arranged as two &Ggr;-like guides (20) placed with shelves (21) towards each other and fixed on rotary valve (7) in such way that between the &Ggr;-like guides (20) T-like slot (22) is formed, there pins (23) are placed, those are arranged at the end of drive rod (9); seat (6) is arranged as support ring (25) with sealing element (26) and is connected to flange (5) of outlet branch pipe (3). The technical result is in increase of reliability. |
