PILLOW BLOCK SEAL
A seal for a pillow block that supports a rotating shaft includes an annular body having an inner surface opposite an outer surface. Disposed in the inner surface is a retaining channel that retains two double-wound laminar gripping rings that are separated by a double-wound laminar engagement ring. The gripping rings are dimensioned to frictionally engage and are carried by the shaft as it rotates. The engagement ring remains fixed within the retaining channel relative to the rotating gripping rings, resultantly forming a labyrinth seal to prevent the intrusion of particles and debris from entering the pillow block to prevent the contamination of lubricants contained therein.
1 . A seal for a pillow block carrying a rotating shaft comprising:
an annular body having an inner surface that opposes an outer surface;
a retaining channel defined by said inner surface; and
at least a first ring and a second ring disposed within said retaining channel, such that said first ring is engaged with the rotating shaft and carried therewith, and said second ring is engaged with said annular body of the seal.
2 . The seal of claim 1 , further comprising a third ring disposed within said retaining channel, which is engaged with the shaft.
3 . The seal of claim 1 , wherein said first ring comprises a double-wound laminar ring, and said second ring comprises a double-wound laminar ring.
4 . The seal of claim 3 , further comprising a third ring disposed within said retaining channel, said third ring comprising a double-wound laminar ring.
5 . The seal of claim 2 , wherein said first and third rings are separated by said second ring.
6 . The seal of claim 1 , further comprising at least one mounting channel defined by said outer surface of said annular body configured to engage the pillow block.
7 . The seal of claim 6 , further comprising an annular ring support extending from said outer surface of said annular body proximate to said mounting channel.
8 . The seal of claim 7 , wherein a seal ring is carried by said ring support.
9 . A pillow block for a rotating shaft comprising:
a pillow block having at least one interface aperture to receive the rotating shaft therethrough; and
a seal disposed within said at least one aperture, said seal comprising:
an annular body having an inner surface that opposes an outer surface;
a retaining channel defined by said inner surface; and
at least a first ring and a second ring disposed within said retaining channel, such that said first ring is engaged with the rotating shaft and carried therewith, and said second ring is engaged with said annular body of said seal.
10 . The pillow block of claim 9 , further comprising a third ring disposed within said retaining channel, which is engaged with the shaft.
11 . The pillow block of claim 9 , wherein said first ring comprises a double-wound laminar ring, and said second ring comprises a double-wound laminar ring.
12 . The pillow block of claim 11 , further comprising a third ring disposed within said retaining channel, said third ring comprising a double-wound laminar ring.
13 . The pillow block of claim 10 , wherein said first and third rings are separated by said second ring.
14 . The pillow block of claim 9 , further comprising at least one mounting channel defined by said outer surface of said annular body configured to engage the pillow block.
15 . The pillow block of claim 14 , further comprising an annular ring support extending from said outer surface of said annular body proximate to said mounting channel.
16 . The pillow block of claim 15 , wherein a seal ring is carried by said ring support.
17 . A seal for a pillow block that carries a rotating shaft comprising:
a rotating collar having an opposed inner and outer surface, and adapted to be attached and carried with the rotating shaft, said rotating collar having a retaining channel defined by said outer surface;
a fixed annular body having an opposed inner and outer surface, said annular body adapted to be mounted to the pillow block, said fixed annular body having an engagement flange that forms an engagement recess to receive at least a portion of said rotating collar, such that said engagement flange extends over said retaining channel; and
at least a first ring and a second ring disposed within said retaining channel, such that said first ring is engaged with said engagement flange and said second ring is engaged with said rotating collar, so as to be rotatably carried therewith.
18 . The seal of claim 17 , further comprising a third ring disposed within said retaining channel, which is engaged with said engagement flange.
19 . The seal of claim 17 , wherein said rotating collar is adapted to be attached to the shaft by a setscrew.
20 . The seal of claim 17 , wherein said rotating collar further comprises a ring channel defined by said inner surface of said rotating collar that carries a seal ring to sealingly engage the shaft.
21 . A pillow block for a rotating shaft comprising:
a pillow block having at least one interface aperture to receive the rotating shaft therethrough;
a rotating collar having an opposed inner and outer surface, and adapted to be attached and carried with the rotating shaft, said rotating collar having a retaining channel defined by said outer surface;
a fixed annular body having an opposed inner and outer surface, said fixed annular body disposed in said at least one interface aperture of said pillow block, said fixed annular body having an engagement flange that forms an engagement recess to receive at least a portion of said rotating collar, such that said engagement flange extends over said retaining channel; and
at least a first ring and a second ring disposed within said retaining channel, such that said first ring is engaged with said engagement flange and said second ring is engaged with said rotating collar, so as to be rotatably carried therewith.
22 . The pillow block of claim 21 , further comprising a third ring disposed within said retaining channel, which are engaged with said engagement arm.
23 . The pillow block of claim 21 , wherein said rotating collar is adapted to be attached to the shaft by a setscrew.
24 . The pillow block of claim 21 , wherein said rotating collar includes a ring channel defined by said inner surface of said rotating collar that carries a seal ring to sealingly engage the shaft.