| 摘要 |
Described is a fluid flow rate limiting valve (1), in particular for manipulators, comprising: a chamber (2) defining a main conduit (2a) for the passage of an operating fluid, the chamber (2) having an inlet opening (2i) and a delivery opening (2m) for the fluid; an inlet conduit (3) connected to the inlet opening (2i) of the chamber (2); a delivery conduit (4) connected to the delivery opening (2m) of the chamber (2); a shutter (5) positioned inside the main conduit (2a) of the chamber (2) and movable between an operating position for allowing passage of the fluid and an operating position for at least partly obstructing the passage of the fluid towards the delivery opening (2m), in such a way as to limit the fluid flow rate in the delivery opening (2m). More specifically, the valve (1) comprises: at least one main by-pass channel (6) forming a fluid communication passage between the inlet conduit (3) and the delivery conduit (4); means (7) for regulating the passage section of the main by-pass channel (6); the main by-pass channel (6) allowing or blocking the passage of fluid irrespective of the operating position of the shutter (5). |
