摘要:
The fitting comprises two fitting parts (1, 2) connectable to respective pipes and provided with respective ball valves (7, 8) one of which (7) with concavity, and coupling means (20) of the quick release type for the aforementioned fitting parts (1, 2). It provides functional interconnection means (40-53) that prevent the closing of the valve without concavity (8) before the closing of the valve with concavity (7) and the release of the coupling device (20) before the closing of the valve without concavity. Said functional interconnection means (40-53) comprise a first control lever (40) for the closing rotation of the valve with concavity (7), a second control lever (45) for the closing rotation of the valve without concavity (8), that is hinged on the same axes of the first lever (40) and has a rotation subordinated to the removal of a mechanical block caused by said first lever (40) in opening position. A first hydraulic cylinder (42) controls the rotation of said first lever (40) toward a closing position of the valve with concavity (7), and a second hydraulic cylinder (48) controls the rotation of said second lever (45) toward a closing position of the valve without concavity (8) after the removal of said mechanical block and, subsequently, the release of the coupling device (20) of the two fitting parts (1, 2).
摘要:
A union for flexible pipes comprising an inlet part (1) fixed to an outlet part (2) automatically and axially removable in the event of strong tensile stress. These parts (1) and (2) have central aligned holes (7, 3, 30) designed to define an axial passage for the fluid, which is closed by a rotary hatch (8), contained in the part (1). Said hatch (8) is usually maintained in a position of opening of said passage and can be automatically moved in a position of closure of the same passage when the two parts (1, 2) of the union are separated.
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:
A quick connection device has a supporting structure (10) for connection elements (30) constrained to the union body (4) by means of radial engagement members (11,12) engaged in a movable manner with a substantially spherical reaction surface (8) of the union body (4). In this manner any coplanarity defect or difference in thickness of the end flange (3) of the pipe (2) to be connected is compensated for through appropriate rotation of the supporting structure (10) of the quick connection device along said spherical surface (8).
摘要:
A coupling for hydraulic tubing is described that is made up of two parts of coupling (1, 2) that are passed through by respective axial ducts (10) and connected with each other by rigid coupling means (3) that are suitable to allow the automatic separation of said parts in the case of a strong axial traction. At least one of said parts of the coupling comprises a spherical segment valve (24) that responds to the movement of separation with a rotary-sliding motion up to the attainment of a closing position of the axial duct (10) of said part of the coupling. A duct segment (35) that is arranged as an axial extension of the axial duct (10) keeps said valve (24) in an opening position when the coupling is coupled, and said rack rod (16) is suitable to operate on said duct segment (35) in order to control its expulsion from said part of the coupling and in addition it is operationally connected with said valve (24) in such a way as to control the beginning of its closing movement only after said duct segment (35) has been removed from the path of the closing movement of said valve (24).
摘要:
The fitting is formed by a male tubular part (1) and by a female tubular part (2) to be fastened to respective pipes to be joined together and provided with quick-action coupling and uncoupling means (11-13). The male/female tubular parts (1, 2) are provided with conically-shaped surfaces (25, 26) of reciprocal engagement so as to allow their separation even in the presence of a bending moment between the pipes. Between the male/female tubular parts (1, 2) there is also interposed a floating front axial sealing ring (21) movably fastened to the female part (2) and elastically urged against a front shoulder (22) of the male part (1) so as to ensure the hydraulic seal between the two tubular parts (1, 2) in the presence of a bending moment.
摘要:
A quick safety disconnection device (5) is combined with two control valves (3, 4) of respective connector elements (1, 2) in such a manner that disconnection thereof is dependent upon prior closing of both of the valves (3, 4). The valves (3, 4) have spherical bodies (12, 32) traversed by truncated cone passages (13, 33) which connect smaller front portions (7, 27) to rear passages (14, 34) having progresively increasing diameter. Said rear passages (14, 34) are separable from the rest of the connector element (1, 2) to permit insertion and assembly of the ball (12, 32) from the rear part of the connector element (1, 2).
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.