초록 ▼

A divided driver device (5) for a mechanical face seal for non-rotatable assembly on a rotary component and for the transmission of a torque to a seal ring (2) held in non-rotatable manner on the driver device. The driver device (5) is divided in at least a single radial plane so as to form sections

A divided driver device (5) for a mechanical face seal for non-rotatable assembly on a rotary component and for the transmission of a torque to a seal ring (2) held in non-rotatable manner on the driver device. The driver device (5) is divided in at least a single radial plane so as to form sections in the form of segments of a circle that are adapted to be clamped together to form a ring shape and furthermore, it is axially sub-divided into a divided retaining ring (14) for retaining the seal ring (2) and a divided mounting ring (16) for non-rotatable mounting to the rotary component. The rings (14, 16) are coupled together for rotation in common, as indicted by (24). The retaining ring (14) comprises mutually sealed sections (141, 142) in the form of segments of a circle which are adapted to be placed together to form a ring shape having an inner radial dimension that is greater than the nominal outer radial dimension of the rotary component concerned (6), and said sections comprise peripherally aligned end faces (151, 152) which are preferably in metal-to-metal contact with one another and have a surface finish for mutually sealing them.

대표청구항 ▼

The invention claimed is: 1. A divided driver device for a mechanical face seal for mounting to a rotary component and for the transmission of a torque from the rotary component to a seal ring fastened to the driver device, said driver device being divided in at least a single radial plane for form

The invention claimed is: 1. A divided driver device for a mechanical face seal for mounting to a rotary component and for the transmission of a torque from the rotary component to a seal ring fastened to the driver device, said driver device being divided in at least a single radial plane for forming sections in the form of segments of a circle, said sections being adapted to be clamped together in the shape of a ring, and said driver device being axially sub-divided into a radially divided retaining ring for retaining the seal ring and a radially divided mounting ring for mounting to the rotary component, said mounting ring and retaining ring being coupled together for rotation in common, wherein said retaining ring includes sections in the form of segments of a circle adapted to be placed together in a sealed manner in the shape of a ring having an inner radial dimension that is greater than the nominal outer radial dimension of the rotary component and further including peripherally aligned end faces abutting each other, and said mounting ring including at least a pair of sections in the form of segments of a circle, said sections being adapted to be combined into a ring having an inner radial dimension that is smaller than that of the retaining ring and smaller than the nominal outer radial dimension of the rotary component for clamping engagement of the mounting ring with the rotary component, wherein the retaining ring and the mounting ring are coupled together with play in at least the circumferential direction by at least one drive pin projecting axially from an axial end face of one of the mounting and retaining rings and engaging, in a loosely seated manner, in a recess defined in an adjacent end face of the other of the mounting and retaining rings, the retaining ring and the mounting ring being axially engaged together to form a claw clutch, wherein the claw clutch is interrupted by the recess engaged with the at least one drive pin. 2. The driver device according to claim 1, wherein said peripherally aligned end faces of the retaining ring are in essentially planar metal-to-metal contact and comprise a surface finish for mutually sealing them. 3. The driver device according to claim 2, wherein said peripherally aligned end faces of the retaining ring have a roughness ≦1.0 μm, preferably ≦0.8 μm, and most preferably 0.5 μm. 4. The driver device according to claim 1, wherein the seal ring is loosely seated on the retaining ring. 5. A divided mechanical face seal comprising: a)first and second cooperating seal rings; b)a divided driver device configured for mounting to a rotary component and for the transmission of a torque from the rotary component to the first seal ring, which is adapted to be fastened to the driver device, said driver device being divided in at least a single radial plane for forming sections in the form of segments of a circle, said sections being adapted to be clamped into the shape of a ring, and said driver device being axially sub-divided into a radially divided retaining ring for retaining the first seal ring and a radially divided mounting ring for mounting to the rotary component, said mounting ring and retaining ring being adapted to be coupled together for rotation in common, wherein said retaining ring includes sections in the form of segments of a circle adapted to be placed together in a sealed manner into the shape of a ring having an inner radial dimension that is greater than the nominal outer radial dimension of the rotary component and further including peripherally aligned end faces abutting each other, and said mounting ring including at least a pair of sections in the form of segments of a circle, said sections being adapted to be combined into a ring having an inner radial dimension that is smaller than that of the retaining ring and smaller than the nominal outer radial dimension of the rotary component for clamping engagement of the mounting ring with the rotary component, wherein the retaining ring and the mounting ring are coupled together with play in at least the circumferential direction by at least one drive pin projecting axially from an axial end face of one of the mounting and retaining rings and engaging, in a loosely seated manner, in a recess defined in an adjacent end face of the other of the mounting and retaining rings, the retaining ring and the mounting ring being axially engaged together to form a claw clutch, wherein the claw clutch is interrupted by the recess engaged with the at least one drive pin; and c)a seal housing divided in at least one radial plane into sections in the form of segments of a circle adapted to be clamped together and mutually sealed against each other, wherein the second seal ring is adapted to be fastened to said housing for cooperating with the first seal ring of the driver device. 6. The mechanical face seal according to claim 5, wherein said sections of the seal housing include peripherally aligned end faces which are configured to be in essentially planar metal-to-metal contact, said end faces having a surface finish for sealing engagement to one another.