| 摘要 |
The present invention relates to a device for regulating fluid flow in a conduit portion, basically consisting, on the one hand, of two bearings fitted in two opposing housing orifices arranged in the wall of said conduit portion, on the other hand, of a generally planar pivoting shutter body mounted between said two bearings and capable of closing the passage of the conduit portion and, finally, of a control spindle traversing the two bearings and on which the shutter body is fitted by a central tubular part; each bearing consists of a bearing element (3, 3') in a single piece comprising a first part (7) forming the body of the bearing and fitted tightly with the ability to rotate in one of the housing orifices (4, 4') and a second part (8) forming a support head situated in the conduit portion (2), resting against the internal face of the wall (2') thereof round the housing orifice (4, 4') concerned and having a traversing groove forming a planar runner;
the shutter body (5) is assembled with the two opposite bearing elements (3 and 3') by the engagement of parts of the opposite sides in the grooves forming runners of the support heads (8) of these two bearing elements (3 and 3'), said assembly being locked by the control spindle (6) traversing them.
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