摘要:
A piston 1 sliding in a cylinder 2 operates a first controlled member. A cut-off valve 3 controls a fluid flow destined for the operation of a second controlled member. The piston 1 is provided with a head portion 6 that, in proximity of the end of every advancement stroke of the piston, is automatically connected to a sliding control 16 of the shutter 4 of the cut-off valve 3 to cause the opening of the latter. Still automatically, said head portion 6 leaves said shutter 4 at a prefixed point of the successive return stroke of the piston.
摘要:
The connector device comprises a tubular-shaped casing (1) provided with one extremity (2) suitable for fastening to a fixed pipe (16) and with one extremity (4) on which grasping members (5) for the connection to a movable pipe (17) are mounted and a cut-off valve (10) situated between said extremities (2, 4) so as to alternatively open and close the passage for a fluid product fed through said fixed pipe. The cut-off valve (10) is provided with stopping means (20) for a member of separation (21), if any, between different fluid products, which stopping means (20) are situated at one extremity of an internal passage (18) of the valve (10) downstream from an area (11) of the valve which is sealed with respect to the fluid product, and the connector casing (1) is provided with a lateral port (12) for discharging said member of separation (21) with which said internal passage (18) of the valve (10) and said stopping means (20) are arranged in communication when said cut-off valve (10) is in the closed position. There are also provided ejection means (25) to transfer the member of separation (21) engaged by said stopping means (20) from said internal passage (18) of the valve (10) to said lateral discharge port (12) for its ejection when the valve (10) is in the open position.
摘要:
@ The union is made up of two parts (1, 2) normally locked together by at least one radial screw (14) with sized cross section. Under severe pulling stress applied to the union from the outside the locking screw (14) breaks and frees the two parts of the union, which separate together with the pipes to which they are attached. Under normal working conditions elastically stressed sealing devices (21,24,30-34) ensure maintenance of watertightness between the union parts.
摘要:
An operation member (1) can be driven to move along a rectilinear path, which is perpendicular and laterally positioned with respect to a rotating control shaft (8) of a first controlled member and directed towards a control element (11) of a second controlled member. There are provided movement transmission means (20, 21) provided with clearance, which firstly transform an initial advancement of the operation member (1) into a rotation of said rotating shaft (8) and then, while maintaining stationary the same shaft (8), allow said operation member (1) a final advancement up to the operation engagement with said control element (11).
摘要:
A coupling device for ducts comprises locking elements (4) movably mounted in a circumferential succession on an end flange (2) of a first duct (1) having a longitudinal axis, moving means (18,20,24) for moving said locking elements (4) from a first position to a second position where said locking elements (4) are engaged with an end flange of a second duct (51) to keep it against the end flange (2) of the first duct (1), elastically stressed floating ring seal means (6) housed in a sliding and oscillating manner in a respective seat (7) provided in the end flange of the first duct (1). Each locking element (4) comprises a jaw (15) rotatable around a rotation axis which is parallel to the longitudinal axis of the first duct (1). Said moving means (18,20,24) comprises a ring (20) rotatably mounted on said first duct (1), said ring (20) having a plurality of toothed sectors (19) each engaged with a respective pinion (18) fixedly mounted on a respective locking element (4).
摘要:
The coupling device for ducts comprises locking elements (12, 55) constrained to the flange (11, 41) of a first duct (10, 40) which are connected to movement means (18, 47) to move them toward or away from the flange (30, 31, 32) of a second duct (80, 81). The movement means (18, 47) are actuated by a thrust ring (17, 50) which is rotated around the axis of the first duct (10, 40). Along the contact side of the flange (11, 41) of the first duct (10, 40) are provided elastically stressed seals (16) which interact between the flange (11, 41) of the first duct and the flange (30, 31, 32) of said connected duct. Said seals (16) consist of floating rings running and oscillating in recesses (14) made in the flange (11, 41), said floating rings being acted upon by elastic elements (13) inserted in said recesses (14).
摘要:
The coupling device for ducts comprises locking elements (12, 55) constrained to the flange (11, 41) of a first duct (10, 40) which are connected to movement means (18, 47) to move them toward or away from the flange (30, 31, 32) of a second duct (80, 81). The movement means (18, 47) are actuated by a thrust ring (17, 50) which is rotated around the axis of the first duct (10, 40). Along the contact side of the flange (11, 41) of the first duct (10, 40) are provided elastically stressed seals (16) which interact between the flange (11, 41) of the first duct and the flange (30, 31, 32) of said connected duct. Said seals (16) consist of floating rings running and oscillating in recesses (14) made in the flange (11, 41), said floating rings being acted upon by elastic elements (13) inserted in said recesses (14).