Hydraulic control valve, a device for adjusting blade pitch, and an aircraft provided with such a hydraulic control valve

摘要

A hydraulic control valve (10) provided with at least one body (11) having a jacket (12) with a feed orifice (13). The hydraulic control valve (10) has a transfer rod (15) provided with at least one fluid transfer duct (16), at least one orifice (17) present inside the jacket (12), and a second orifice (18) arranged outside the jacket (12). The jacket (12) has a feed chamber (25) connected to said feed orifice (13) and a main fluid-return chamber (30) connected to discharge means (50) for discharging the fluid, control means (20) being secured to the jacket (12) in order to move the jacket (12) in translation relative to said transfer rod (15) so as to control the flow of fluid within said transfer rod (15).

主权项

1. A hydraulic control valve comprising:
at least one body, each body comprising a jacket provided with a feed orifice suitable for being connected to a hydraulic circuit; a transfer rod with at least one fluid transfer duct co-operating with at least one first orifice of the transfer rod and at least one second orifice of the transfer rod, the first orifice being arranged inside the jacket and the second orifice being arranged outside the jacket, said transfer rod performing rotary motion (ROT) relative to said body; and control means suitable for being connected to controls, wherein each jacket has a feed chamber connected to said feed orifice and a main fluid-return chamber connected to discharge means for discharging the fluid, the control means being secured to each jacket in order to move each jacket in translation relative to said transfer rod in order to control the flow of fluid within said transfer rod, said fluid discharge means including a fluid recovery sump secured to each jacket.