| 摘要 |
<p>The flow regulator is used for precise adjustment of gravity infusions or transfusions. A casing (3) with an inlet port (1) and outlet port (2) contains a cylindrical valve body (4), the cover of which has a groove (6) of variable cross-section for regulating the flow between the inlet and outlet ports. The groove extends in a plane comprising the outlet port (2) of the casing, perpendicular to the axis of the body (4) at an angle of about 320o. A channel (8) in the form of a groove starting from the largest cross-section of the groove (6) extends parallel to the axis of the body (4) and is linked with a circular groove (9) extending around the periphery of the valve body (4) into which the inlet port (1) leads. Viewed from upstream, the groove (6) is linked with the inlet port (1) via the channel (8) and circular groove (9) and viewed from downstream and according to the angular position of the body (4) a cross-section of varying size of the groove (6) is linked with the outlet port (2). This enables a varying number of drops per unit of time to be fed from the casing (3).</p> |
