IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0101110
(2013-12-09)
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등록번호 |
US-9546734
(2017-01-17)
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발명자
/ 주소 |
- Cid, Edwin
- Azibert, Henri V.
- Attenasio, Ann T.
- Conklin, Timothy
- Phillips, Howard
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출원인 / 주소 |
|
대리인 / 주소 |
Nelson Mullins Riley & Scarborough LLP
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인용정보 |
피인용 횟수 :
1 인용 특허 :
22 |
초록
▼
A split mechanical seal for mounting to a housing containing a rotating shaft comprising a gland assembly configured for mounting to the housing and forming a chamber, where the gland assembly includes a top surface having a gland groove formed thereon. The gland groove is formed at least in part by
A split mechanical seal for mounting to a housing containing a rotating shaft comprising a gland assembly configured for mounting to the housing and forming a chamber, where the gland assembly includes a top surface having a gland groove formed thereon. The gland groove is formed at least in part by at least one raised wall portion that extends axially outwardly from the top surface. The seal also includes a stationary seal ring having a groove or recess formed in an inner surface.
대표청구항
▼
1. A split mechanical seal for mounting to a housing containing a rotating shaft, comprising a gland assembly configured for mounting to the housing and forming a chamber, the gland assembly having a housing that includes an axially outermost top surface having a gland groove formed thereon, wherein
1. A split mechanical seal for mounting to a housing containing a rotating shaft, comprising a gland assembly configured for mounting to the housing and forming a chamber, the gland assembly having a housing that includes an axially outermost top surface having a gland groove formed thereon, wherein the gland groove is formed at least in part by a plurality of circumferentially spaced apart, discrete raised wall portions that extend axially outwardly from the axial outermost top surface, and the axially outermost top surface further has formed therein a plurality of spaced apart, discrete cut-out sections formed into the top surface and extending axially inwardly relative to the top surface and relative to the raised wall portions, wherein the cut-out sections are sized and dimensioned for seating at least a portion of a biasing clip assembly, and wherein the plurality of cut-out portions are alternately disposed between the plurality of raised wall portions within the axially outermost top surface, such that one of the plurality of cut-out sections is disposed between at least two of the plurality of raised wall portions,a stationary seal ring seated within the chamber of the gland assembly and coupled thereto, the stationary seal ring having a sealing surface and an opposed axially outer top surface,a holder assembly disposed in the chamber and positioned so as to be in a cooperative sealing relationship with the gland assembly, the holder assembly defining a space and capable of rotating with the shaft, anda rotary seal ring disposed within the space of the holder assembly and is coupled thereto. 2. The split mechanical seal of claim 1, wherein the raised wall portions are generally equally spaced apart about the circumference of the gland assembly. 3. The split mechanical seal of claim 1, wherein the plurality of raised wall portions comprises a first plurality of discrete raised wall portions arranged along an inner circumference of the axially outermost top surface of the gland assembly and having a first diameter, and a second plurality of discrete raised wall portions arranged along an outer circumference of the axially outermost top surface portion of the gland assembly and having a second diameter, wherein the second diameter is larger than the first diameter. 4. The split mechanical seal of claim 3, wherein the first plurality of raised wall portions are radially aligned with the second plurality of raised wall portions. 5. The split mechanical seal of claim 1, further comprising a biasing member that is coupled to the gland assembly for exerting, in operation, an axially downward biasing force to the stationary seal ring and the rotary seal ring to place the sealing surface of the stationary seal ring in sealing contact with a sealing surface of the rotary seal ring. 6. The split mechanical seal of claim 1, further comprising a biasing clip assembly that is coupled to the gland assembly for exerting, in operation, an axially downward biasing force to the stationary seal ring and the rotary seal ring to place the sealing surface of the stationary seal ring in sealing contact with a sealing surface of the rotary seal ring, wherein a first portion of the biasing clip assembly is sized and configured for seating within at least one of the plurality of discrete cut-out sections and an opposed second portion of the biasing clip assembly is sized and configured for contacting at least one of the plurality of discrete raised wall portions. 7. The split mechanical seal of claim 1, wherein the top surface of the stationary seal ring comprises a plurality of recesses formed therein. 8. The split mechanical seal of claim 7, wherein the stationary seal ring has an inner surface and an outer surface, wherein the inner surface has a continuous groove formed therein adjacent to the top surface. 9. The split mechanical seal of claim 8, wherein the groove is continuous along the inner surface. 10. The split mechanical seal of claim 8, further comprising a biasing clip assembly that is coupled to the gland assembly and the stationary seal ring, the biasing clip assembly having a first end portion that is coupled to the discrete cut-out sections formed into the axially outermost top surface of the gland assembly and a second opposite end portion that seats within and engages one of the plurality of recesses, and wherein the biasing clip assembly is further coupled to the groove formed along the inner surface of the stationary seal ring. 11. The split mechanical seal of claim 1, further comprising a movable spring engaging mechanism sized and configured for seating within the gland groove. 12. The split mechanical seal of claim 11, wherein the movable spring engaging mechanism comprises an arcuate shaped main body having a plurality of spaced apart surface features. 13. The split mechanical seal of claim 12, wherein the movable spring engaging mechanism further comprises a bent portion formed at a terminal end. 14. The split mechanical seal of claim 1, wherein the holder assembly has an inner surface and an opposed outer surface, and wherein the inner surface of the holder assembly comprises a detent groove formed therein and configured for at least partially seating a portion of a sealing element. 15. The split mechanical seal of claim 14, wherein the rotary seal ring includes an outer surface and has a detent groove formed therein for at least partially seating a portion of a sealing element. 16. The split mechanical seal of claim 1, wherein the rotary seal ring comprises a first seal ring segment having at least one non-flat, axially extending end face, anda second seal ring segment having at least one non-flat, axially extending end face,wherein the non-flat axially extending end face of the first seal ring segment is disposed in confronting relationship with the non-flat axially extending end face of the second seal ring segment when assembled, andwherein the non-flat end faces when confronting each other are complementary in shape. 17. The split mechanical seal of claim 16, wherein the first seal ring segment comprises first and second non-flat, axially extending end faces, wherein the first non-flat end face has a shape that is different than the shape of the second non-flat end face. 18. A split mechanical seal for mounting to a housing containing a rotating shaft, comprising a gland assembly configured for mounting to the housing and forming a chamber,a stationary seal ring seated within the chamber of the gland assembly and coupled thereto, the stationary seal ring having a sealing surface,an axially outer top surface disposed opposite to the sealing surface,an inner surface, anda continuous groove formed in the inner surface at a position adjacent to the top surface,a holder assembly disposed in the chamber and positioned so as to be in a cooperative sealing relationship with the gland assembly, the holder assembly defining a space and capable of rotating with the shaft, anda rotary seal ring disposed within the space of the holder assembly and is coupled thereto. 19. The split mechanical seal of claim 18, wherein the gland assembly further comprises a top surface having a gland groove formed thereon, wherein the gland groove is formed at least in part by a raised wall portion that extends axially outwardly from the top surface. 20. The split mechanical seal of claim 19, wherein the raised wall portion comprises a plurality of circumferentially spaced apart, discrete raised wall portions that extend axially outwardly from the top surface. 21. The split mechanical seal of claim 19, further comprising a movable spring engaging mechanism sized and configured for seating within the gland groove. 22. The split mechanical seal of claim 18, wherein a top surface of the stationary seal ring has a plurality of recesses formed therein. 23. The split mechanical seal of claim 22, wherein a top surface of the gland assembly further comprises a biasing member engaging portion formed between adjacent spaced apart, discrete raised wall portions that extend axially outwardly from the top surface. 24. The split mechanical seal of claim 23, wherein the biasing member engaging portion has a cut-out portion formed therein. 25. The split mechanical seal of claim 24, further comprising a biasing member that is coupled to the gland assembly and the stationary seal ring, the biasing member having a first end portion that is coupled to the gland assembly and a second opposite end portion that seats within and engages one of the plurality of recesses formed in the top surface of the stationary seal ring, and wherein the biasing member is further coupled to the continuous groove formed along the inner surface of the stationary seal ring. 26. The split mechanical seal of claim 22, further comprising a biasing member that is capable of being coupled to an axially outermost portion of the gland assembly and to the stationary seal ring. 27. The split mechanical seal of claim 26, wherein the biasing member comprises a biasing clip assembly having a first inner spring clip member, anda second outer spring clip member that is sized and configured for mounting over the first inner spring clip member. 28. The split mechanical seal of claim 27, wherein the first inner spring clip member and the second outer spring clip member have a generally C-shaped configuration. 29. The split mechanical seal of claim 27, wherein the first inner spring clip member has a first end having a ridge portion formed thereon. 30. The split mechanical seal of claim 29, wherein the ridge portion is adapted to seat within a cut-out portion formed in the gland assembly to couple the biasing clip assembly to the gland when assembled. 31. The split mechanical seal of claim 29, wherein the first inner spring clip member further comprises a bent portion formed at the opposite end of the clip member, wherein the bent portion is adapted to contact one of the plurality of recesses formed in the stationary seal ring to apply an axial biasing force thereto, in operation. 32. The split mechanical seal of claim 27, wherein the second outer spring clip member comprises a generally rounded first end portion configured to mount on and engage an outer surface of the first spring clip member, anda second end portion disposed opposite to the first end portion, the second end portion having a bent tab portion extending outwardly therefrom,wherein the bent tab portion is adapted to engage the groove formed along the inner surface of the stationary seal ring, thus coupling the stationary seal ring to the gland assembly when assembled. 33. The split mechanical seal of claim 18, wherein the gland assembly includes a top surface having a gland groove formed thereon. 34. The split mechanical seal of claim 33, wherein the gland groove is formed at least in part by a plurality of circumferentially spaced apart, discrete raised wall portions that extend axially outwardly from the top surface. 35. The split mechanical seal of claim 18, wherein the stationary seal ring comprises a pair of arcuate stationary seal ring segments. 36. The split mechanical seal of claim 18, wherein the rotary seal ring comprises a pair of arcuate rotary seal ring segments. 37. A split mechanical seal for mounting to a housing containing a rotating shaft, comprising a gland assembly configured for mounting to the housing and forming a chamber, wherein the gland assembly comprises a housing having an axially outermost top surface having an arcuately shaped gland groove formed therein, wherein the arcuately shaped gland groove is formed at least in part by a plurality of circumferentially spaced apart, discrete raised wall portions that extend axially outwardly from the axial outermost top surface, and the axially outermost top surface further has formed therein a plurality of spaced apart, discrete cut-out sections formed into the top surface and extending axially inwardly relative to the top surface and relative to the raised wall portions, and wherein the plurality of cut-out portions are alternately disposed between the plurality of raised wall portions within the axially outermost top surface, such that one of the plurality of cut-out sections is disposed between at least two of the plurality of raised wall portions,a stationary seal ring seated within the chamber of the gland assembly and coupled thereto, the stationary seal ring having a sealing surface and an opposed axially outer top surface,a holder assembly disposed in the chamber and positioned so as to be in a cooperative sealing relationship with the gland assembly, the holder assembly defining a space and capable of rotating with the shaft,a rotary seal ring disposed within the space of the holder assembly and is coupled thereto, anda movable spring engaging mechanism sized and dimensioned for mounting in the gland groove and movable therein, the movable spring engaging mechanism comprisinga main body having an arcuate shape, anda plurality of spaced apart surface features associated with the main body. 38. The split mechanical seal of claim 37, wherein the movable spring engaging mechanism further comprises a bent portion formed at a terminal end of the main body. 39. The split mechanical seal of claim 37, wherein the gland groove is formed at least in part by a plurality of circumferentially spaced apart, discrete raised wall portions that extend axially outwardly from the top surface. 40. The split mechanical seal of claim 37, further comprising a biasing member coupled to the gland assembly for applying an axial biasing force to at least the stationary seal ring. 41. The split mechanical seal of claim 40, wherein the biasing member comprises a biasing clip assembly having a first inner spring clip member, anda second outer spring clip member that is sized and configured for mounting over the first inner spring clip member,wherein the first inner spring clip member and the second outer spring clip member have a generally C-shaped configuration. 42. The split mechanical seal of claim 40, wherein the movable spring engaging mechanism is movable within the gland groove between an engaged position where one or more of the plurality of surface features engages the biasing member to remove the biasing force applied by the clip assembly to the stationary seal ring, and a disengaged position where the surface feature is removed from contact with the biasing member thereby allowing the biasing clip assembly to apply an axial biasing force to the stationary seal ring. 43. The split mechanical seal of claim 38, wherein the bent portion formed at the terminal end of the main body of the movable spring engaging mechanism is sized and configured to seat within a recess formed in an end face of the gland assembly. 44. The split mechanical seal of claim 1, wherein the gland assembly is free of a bolt-tab groove.
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