[특허]Mixing equipment sealing device

Mixing equipment sealing device 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01F-015/00 F16J-015/54 F16J-015/00
출원번호	US-0813180 (2004-03-30)
발명자 / 주소	Harris,Marlon D. Talbert, Jr.,Daniel Burnett,Edward D.
출원인 / 주소	Alliant Techsystems Inc.
대리인 / 주소	Nikolai &
인용정보	피인용 횟수 : 0 인용 특허 : 28

초록 ▼

A shaft sealing arrangement for sealing bores around a pair of stirrer shafts that emerge through a wall of an associated mixing vessel includes a pair of generally cylindrical shaft sealing assemblies designed to be carried on adjacent stirrer shafts, each gland assembly including the gland member and a gland housing. A plurality of raised spaced radially distributed wiper strips are attached to outside surface of each gland which are directionally deployed at an angle with the direction of the axis of the gland such that the wiper strips act to return escaping material back into an associated mixing vessel. The gland assemblies are designed to be mounted on to rotate with a corresponding one of the pair of stirrer shafts and are enabled to move axially relative therealong. A drive system operates the gland assemblies along the shafts between a deployed (mixing) position with each gland positioned in a wall bore through which a corresponding stirrer shaft emerges and in a retracted (cleaning) position wherein said gland assemblies are withdrawn outside the wall.

대표청구항 ▼

What is claimed is: 1. A shaft sealing arrangement for sealing bores around stirrer shafts of interest that emerge through walls of associated mixing vessels comprising: (a) a pair of generally cylindrical shaft sealing assemblies designed to be associated with a pair of adjacent spaced generally parallel stirrer shafts of interest, each said shaft sealing assembly includes a gland member and a gland housing, said gland member having an outside surface and an axis and including a plurality of raised spaced radially distributed wiper strips attached to said outside surface, said wiper strips being directionally deployed at an angle with the direction of the axis of said gland such that the wiper strips act to return escaping material back into an associated mixing vessel when said gland is rotated in a desired direction; (b) wherein in each said gland assembly is adapted to be mounted on to rotate with a corresponding one of said pair of stirrer shafts of interest and is enabled to move axially relative thereto; and (c) a seal drive system for operating said pair of gland assemblies along said pair of shafts of interest between a deployed position wherein each said sealing gland is positioned in a bore through which a corresponding stirrer shaft emerges and in a retracted position wherein said gland assembly is withdrawn outside said bore. 2. A shaft sealing arrangement as in claim 1 further comprising a clamp device associated with each said gland assembly adapted to clamp onto a corresponding stirring shaft and cooperate with said gland assembly, said clamp device allowing movement of said gland assembly along said shaft but preventing relative rotation between said gland assembly and said shaft. 3. A shaft sealing arrangement as in claim 2 wherein said drive system comprises a linear actuator which operates both said gland assemblies by means of a common bridging member. 4. A shaft sealing arrangement as in claim 3 wherein said common bridging member is a pusher plate disposed to interlock with and reciprocate both of said pair of gland assemblies. 5. A shaft sealing arrangement as in claim 3 wherein said linear actuator is a double-acting fluid-operated cylinder fixed to said common bridging member and having an associated reciprocating rod adapted to be fixed to a wall of a vessel through which said stirrer shafts of interest emerge in a manner such that extension and retraction of said cylinder rod moves said common bridging member away from and toward said wall thereby respectively retracting and deploying said gland assemblies. 6. A shaft sealing arrangement as in claim 5 wherein said fluid-operated cylinder is an air cylinder. 7. A shaft sealing arrangement as in claim 2 wherein said gland members and said gland housings are assembled from symmetrical halves, with said gland member being captured by said housing in a dovetail arrangement. 8. A shaft sealing arrangement as in claim 1 wherein said drive system comprises a linear actuator which operates both said gland assemblies by means of a common bridging member. 9. A shaft sealing arrangement as in claim 8 wherein said common bridging member is a pusher plate disposed to interlock with and reciprocate both of said pair of gland assemblies. 10. A shaft sealing arrangement as in claim 8 wherein said linear actuator is a double-acting fluid-operated cylinder fixed to said common bridging member and having an associated reciprocating rod adapted to be fixed to a wall of a vessel through which said stirrer shafts of interest emerge in a manner such that extension and retraction of said cylinder rod moves said common bridging member away from and toward said wall thereby respectively retracting and deploying said gland assemblies. 11. A shaft sealing arrangement as in claim 10 wherein said fluidoperated cylinder is an air cylinder. 12. A shaft sealing arrangement as in claim 1 wherein said gland members and said gland housings are assembled from symmetrical halves, with said gland member being captured by said housing in a dovetail arrangement.

이 특허에 인용된 특허 (28)

Liddiard Roy (Willowdale CAX), Agitator having detachable wear sleeve.
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Whiteman ; Jr. Marvin E. (2254 Braniff St. Boise ID 83706), Bearing and seal assembly for motor mixer.
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Mosher Douglas E. (Oxford CT), Convenient access for clean-out and maintenance of mixing chamber and both rotors in two-rotor continuous mixers for pla.
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Wiese ; Winfred J., Heat exchanger for shaft seal cartridge.
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Kesig Ricky D. ; Stokes Michael J. ; Middendorf Michael J., Horizontal mixer apparatus and method with improved shaft and seal structure.
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Hayashida Kunimatsu (Weinheim DEX) Rapp Hermann (Mrlenbach DEX) Fuchs Dieter (Riedstadt DEX), Lip seal.
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Harvey Kenneth L. (Pleasant Grove UT) Dixon Howard D. (Salt Lake City UT), Low shear mixing process for the manufacture of solid propellants.
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Hahn Robert B. (Virginia Beach VA), Method and apparatus for improved belt type expansion joints.
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Prough J. Robert (Queensbury NY) Kerpka William A. (Glens Falls NY) Bolles John F. (Queensbury NY), Method and apparatus for the facilitating the servicing of drive-shaft assemblies for pressurized vessels.
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Mosher Douglas E. (Oxford CT), Method of making rotors for two-rotor continuous mixers and method of assembly.
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Hutchings William F. (Fairport NY) Schutte Marlin D. (Rochester NY) Markle Stephen L. (Rochester NY) Berg Joel S. (Rochester NY) Engel David J. (Springwater NY), Mixer drive apparatus enabling radial changing of shaft seal.
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Engel, David J., Mixer seal and bearing apparatus and method.
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Gambrill Jeffrey S. (Hilton NY) Hutchings William F. (Fairport NY) Markle Stephen L. (Rochester NY) Schutte Marlin (Rochester NY) Palmer John M. (Groveland NY), Mixer systems.
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Tschopp Patrick,CHX, Mixing and kneading apparatus.
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Forslund Kjell (Sundsbruk SEX), Mixing device with axially movable shaft for maintenance purposes.
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Mosher Douglas E. (Oxford CT) Sardinskas Stuart A. (Bethany CT), One-piece cylindrical extruder barrel assembled with eccentric converging hopper for receiving molten plastic materials.
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Harold L. Schafer ; Kelly Ziegenfus ; Donald Woodring, Packing gland seal assembly as an upstream seal for mixer rotors.
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Hamm Alton B. (Fort Worth TX), Portable batch mixing apparatus for cementitious construction materials.
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Worrell ; Jr. William J. ; Worrell ; II David A. ; Donckers Joseph M., Process for manufacture of perforated slab propellant.
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Kassuelke Gregory T. ; Candland Calvin T. ; Kennedy James L., Propellant system.
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Cotteverte, Patrick; Rohe, Christian, Receiving device for at least one shaft supported in sealing fashion in a housing.
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Paolo Galletti IT, Seal assembly for installation on shafts of mixers for concrete, mortar and similar mixtures.
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Moriyama Masao (No. 508-13 Tendocho 17 ; Nishinomiyashi ; Hyogo JPX), Sealing device in mixing equipment.
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Fessmann Walter (Waiblingen DEX), Shaft seal of a mixing and kneading machine.
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Futai, Masanori, Shaft sealing apparatus.
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White, James E., Shaft sealing assembly having replaceable sealing sleeve.
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Larkins David J. (Brampton CAX) Schneider John C. (Acton CAX), Shut off seal about a shaft of a device having a side entry into a tank.
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Adams David G. (Box 131 Vly Summit Rd. Greenwich NY 12834), Split gland seal assembly.
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