Mechanical shaft seal
AssigneePlattco Corporation
InventorsDean Surprenant, Patrick J. Noel, Jeffrey S. Spooner
Life of this patent
Estimating the term…
Abstract
An improved mechanical shaft seal to give a tight seal between relatively rotating machine parts and prevent the escape of particulate material into the atmosphere or into the mechanical components of the housing under adverse operating conditions. The seal provides a grease chamber that prevents solid particles from reaching the main seal by migration within the mechanical shaft seal.
Claims15
A mechanical shaft seal comprising a rotary seal ring, a stationary seal seat, a gland and a rotor sleeve for relative rotation,
- said rotor sleeve having an inner wall, an outer wall, a first distal end and a second distal end,
- a seal assembly comprising a stationary grease housing, a lip seal connected thereto near said first distal end, and a grease chamber containing grease bounded by at least said lip seal, said rotary seal ring and said stationary grease housing,
- said rotary seal ring surrounding said rotor sleeve and secured near said first distal end,
- said stationary grease housing surrounds said rotary seal ring,
- said stationary seal seat being secured to said gland,
- said gland surrounding said rotor sleeve,
- said rotary seal ring surrounding said rotor sleeve, in sealing engagement with said stationary seal seat,
- and
- said rotor sleeve having a bore therethrough to enable said rotor sleeve to surround and sealingly engage a shaft for rotation with said shaft.
A mechanical shaft seal adapted to be used with dry-material-handling equipment, comprising:
- a rotary seal ring, a stationary seal seat, a gland, and a rotor sleeve for relative rotation,
- said rotor sleeve having an inner wall, an outer wall, a first distal end and a second distal end,
- a seal assembly comprising a stationary grease housing, a lip seal connected thereto near said first distal end, and a grease chamber containing grease bounded by at least said lip seal, said rotary seal ring and said stationary grease housing,
- said grease housing having a bore therethrough to receive said rotor sleeve, said rotary seal ring being disposed around said rotor sleeve near said first distal end and in sealing engagement with said stationary seal seat,
- said lip seal being disposed around said rotor sleeve and between said rotor sleeve and said grease housing,
- said stationary seal seat being disposed around said rotor sleeve in sealing engagement with said rotary seal ring and secured to said gland, and
- said gland having a bore therethrough to receive said rotor sleeve.
Dependencies are inferred from the claim text.