Patent ID: 8282105
Filing Date: 2012-10-09
Classification: F16J,Y10T

Abstract:
1. A system for sealing moving parts of a mechanical device using a plurality of packing rings, comprising: a stuffing box; a spacer provided in said stuffing box; a hub provided in said stuffing box, said hub aligned with said spacer, said hub having an exterior surface extending from a first end of said hub to a second end of said hub, said hub further provided with a slot having two shoulders provided on both sides of a groove extending along said exterior surface of said hub, said slot offset from said first and second ends of said hub resulting in the distance from said first end of said hub to said slot being greater than the distance from said second end of said hub to said slot, said first end of said hub facing said spacer when said hub is installed in said stuffing box; a flange detachably mounted on said hub, said flange provided with an exterior surface extending from a first end of said flange to a second end of said flange, said flange provided with a key extending along said exterior surface of said flange, said key provided between and offset from said first and second ends of said flange resulting in the distance from said first end of said flange to said key being greater than the distance from said second end of said flange to said key; and at least one bolt and nut for removably securing said flange to said stuffing box, wherein a first packing ring is placed in said stuffing box adjacent to said spacer, a portion of said hub is provided in said stuffing box with said first end of said hub facing said spacer at a first distance from said spacer and said key of said flange is inserted into said slot of said hub in a first loading position with said first end of said flange facing away from said spacer to die form said first packing ring, and further wherein additional packing rings are placed in said stuffing box contacting adjacent packing rings to die form said additional packing rings, said first end of said hub is provided in said stuffing box at a distance from said spacer greater than said first distance, and further all of the packing rings have been die formed, the position of said flange is reversed, such that said key of said flange is inserted into said slot of said hub in a second running position with said first end of said flange facing said spacer to operate the mechanical device with the packing rings in place.