High-speed rotating crushing machinery

Claim 2

A drive shafting apparatus suitable for use in machines including a high speed rotating impeller or similar element, comprising: an outer sleeve shaft adapted to be mounted for rotation within said machine; an inner, cantilever shaft rigidly connected at one end of said cantilever shaft within said outer sleeve shaft and having substantial radial play within said sleeve shaft at the other end of said cantilever shaft, said other end of said cantilever shaft being adapted for connection to said high speed rotating element for rotation therewith; and damper means situated about said other end of said cantilever shaft for reducing radial vibrartion of said cantilever shaft as it rotates through critical speeds and for substantially eliminating whirling of said cantilever shaft and high speed rotating element.

Claim 3

A drive shafting apparatus as claimed in claim 1, wherein said damper means comprises a ring mounted about said other end of said cantilever shaft and means for resiliently biasing said ring to allow limited radial deflection of said cantilever shaft during rotation.

Claim 4

A drive shafting apparatus as claimed in claim 1, including means for introducing flowing fluid into said sleeve shaft; wherein said damper means comprise: flow channel means for exhausting said fluid from said sleeve shaft; and means for causing said fluid to fill substantially the radial clearance between said sleeve shaft and said cantilever shaft in the region of said radial play.

Claim 5

A drive shafting apparatus as claimed in claim 2, including means for introducing flowing fluid into said sleeve shaft, wherein said damper means comprise: flow channel means for exhausting said fluid from said sleeve shaft; and means for causing said fluid to fill substantially the radial clearance between said sleeve shaft and said cantilever shaft in the region of said radial play.

Claim 6

A drive shafting apparatus as claimed in claim 2, wherein said ring comprises an inner bore adjacent the outer diameter of said cantilever shaft, said inner bore including means for inducing loss of contact between said cantilever shaft and said rotating element, and said inner bore, whereby said whirling is substantially eliminated.

Claim 7

A drive shafting apparatus as claimed in claim 5, including means for introducing flowing fluid into said sleeve shaft, wherein said damper means further comprises: flow channel means for exhausting said fluid from said sleeve shaft; and means for causing said fluid to fill substantially the radial clearance between said sleeve shaft and said cantilever shaft in the region of said radial play.

Claim 8

A drive shafting apparatus as claimed in claim 1, wherein said damper means comprises an inner bushing spaced from said cantilever shaft; resilient means surrounding said bushing for absorbing energy imparted to said bushing by contact with said cantilever shaft; an outer mounting ring surrounding said resilient means; and means for resiliently biasing said mounting ring to permit limited radial deflection thereof.

Claim 9

A drive shafting apparatus as claimed in claim 7, wherein said means for absorbing comprises a layer of resilient material between said bushing and said mounting ring.

Claim 10

A drive shafting apparatus as claimed in claim 1, wherein said damper means comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 11

A drive shafting apparatus as claimed in claim 9, wherein said cantilever shaft comprises a conical portion and a radially extending horizontal portion at said other end, and said ring comprises a conical face on its inner diameter and a horizontal face, said conical portion and said conical face and said horizontal portion and said horizontal face being biased into contact.

Claim 12

A drive shafting apparatus as claimed in claim 7, wherein said damper means further comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 13

A drive shafting apparatus as claimed in claim 5, wherein said means for inducing loss of contact comprises a varying radius in said inner bore, whereby said loss of contact is induced as said shaft moves from contact with a portion of said bore having one radius to a portion of said bore having one radius to a portion having a larger radius.

Claim 14

A drive shafting apparatus suitable for use in machines including a high speed rotating impeller or similar element and a surrounding rotating bowl or similar element, comprising: an outer sleeve shaft adapted to be mounted for rotation within said machine and for connection to said surrounding rotating element for rotation therewith; an inner sleeve shaft mounted for rotation within said outer sleeve shaft; a central, cantilever shaft rigidly connected at one end of said cantilever shaft within said inner sleeve shaft and having substantial radial play within said inner sleeve shaft at the other end of said cantilever shaft, said other end of said cantilever shaft being adapted for connection to said high speed rotating element for rotation therewith; and damper means about said other end of said cantilever shaft for reducing radial vibration of said cantilever shaft as it rotates through critical speeds and for substantially eliminating whirling of said cantilever shaft and high speed rotating element.

Claim 15

A drive shafting apparatus suitable for use in machines including a high speed rotating impeller or similar element and a surrounding rotating bowl or similar element, comprising: an outer sleeve shaft adapted to be mounted for rotation within said machine and for connection to said surrounding rotating element for rotation therewith; an inner sleeve shaft mounted for rotation within said outer sleeve shaft; a central, cantilever shaft rigidly connected at one end of said cantilever shaft within said inner sleeve shaft and having substantial radial play within said inner sleeve shaft at the other end of said cantilever shaft, said other end of said cantilever shaft being adapted for connection to said high speed rotating element for rotation therewith; and damper means about said other end of said cantilever shaft for reducing radial vibration of said cantilever shaft as it rotates through critical speeds and for substantially eliminating whirling of said cantilever shaft and high speed rotating element.

Claim 16

A drive shafting apparatus as claimed in claim 13, wherein said damper means comprises a ring mounted to said outer sleeve shaft about said other end of said cantilever shaft and means for resiliently biasing said ring to allow limited radial deflection of said cantilever shaft during rotation.

Claim 17

A drive shafting apparatus as claimed in claim 13, including means for introducing flowing fluid into said inner sleeve shaft, wherein said damper means comprises: flow channel means for exhausting said fluid from said inner sleeve shaft; and means for causing said fluid to fill substantially the radial clearance between said inner sleeve shaft and said cantilever shaft in the region of said radial play.

Claim 18

A drive shafting apparatus as claimed in claim 14, including means for introducing flowing fluid into said inner sleeve shaft, wherein said damper means comprises: flow channel means for exhausting said fluid from said inner sleeve shaft; and means for causing said fluid to fill substantially the radial clearance between said inner sleeve shaft and said cantilever shaft in the region of said radial play.

Claim 19

A drive shafting apparatus as claimed in claim 14, wherein said ring comprises an inner bore adjacent the outer diameter of said cantilever shaft, said inner bore including means for inducing a loss of contact between said cantilever shaft and said rotating element and said inner bore, whereby said whirling is substantially eliminated.

Claim 20

A drive shafting apparatus as claimed in claim 17 including means for introducing flowing fluid into said inner sleeve shaft, wherein said damper means further comprises: flow channel means for exhausting said fluid from said inner sleeve shaft; and means for causing said fluid to fill substantially the radial clearance between said inner sleeve shaft and said cantilever shaft in the region of said radial play.

Claim 21

A drive shafting apparatus as claimed in claim 13, wherein said damper means comprises an inner bushing spaced from said cantilever shaft; resilient means surrounding said bushing for absorbing energy imparted to said bushing by contact with said cantilever shaft; an outer mounting ring surrounding said resilient means; and means for resiliently biasing said mounting ring to permit limited radial deflection thereof.

Claim 22

A drive shafting apparatus as claimed in claim 19, wherein said means for absorbing comprises a layer of resilient material between said bushing and said mounting ring.

Claim 23

A drive shafting apparatus as claimed in claim 13, wherein said damper means comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 24

A drive shafting apparatus as claimed in claim 21, wherein said cantilever shaft comprises a conical portion and a radially extending horizontal portion at said other end, and said ring comprises a conical face on its inner diameter and a horizontal face, said conical portion and said conical face and said horizontal portion and said horizontal face being biased into contact.

Claim 25

A drive shafting apparatus as claimed in claim 19, wherein said damper means further comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 26

A drive shafting apparatus as claimed in claim 17, wherein said means for inducing loss of contact comprises a varying radius in said inner bore, whereby said loss of contact is induced as said shaft moves from contact with a portion of said bore having one radius to a portion of said bore having one radius to a portion having a larger radius.

Claim 27

In a centrifugal crushing machine of the type in which an impeller is mounted for rotation within a bowl, the impeller being adapted to project particles of material toward the wall of the bowl, the bowl having a bottom wall extending radially from the impeller and a circumferential wall extending upwardly from the bottom wall, the improvement comprising: spaced impact targets arranged circumferentially on said bottom wall between said impeller and said circumferential wall, said targets being spaced radially from said impeller and said circumferential wall and presenting impact surfaces being oriented at an angle to the path of said particles whereby at least a portion of said particles are crushed by impact with said surfaces; a first sleeve shaft mounted for rotation within said machine; a central cantilever shaft rigidly connected at one end of said cantilever shaft within said first sleeve shaft and having substantial radial play within said first sleeve shaft at the other end of said cantilever shaft, said cantilever shaft being connected to said impeller for rotation therewith; damper means about said other end of said cantilever shaft for reducing radial vibration of said cantilever shaft as it rotates through critical speeds and for substantial eliminating whirling of said cantilever shaft and impeller.

Claim 28

In a centrifugal crushing machine of the type in which an impeller is mounted for rotation within a bowl, the impeller being adapted to project particles of material toward the wall of the bowl, the bowl having a bottom wall extending radially from the impeller and a circumferential wall extending upwardly from the bottom wall, the improvement comprising: spaced impact targets arranged circumferentially on said bottom wall between said impeller and said circumferential wall, said targets being spaced radially from said impeller and said circumferential wall and presenting impact surfaces being oriented at an angle to the path of said particles whereby at least a portion of said particles are crushed by impact with said surfaces; a first sleeve shaft mounted for rotation within said machine; a central cantilever shaft rigidly connected at one end of said cantilever shaft within said first sleeve shaft and having substantial radial play within said first sleeve shaft at the other end of said cantilever shaft, said cantilever shaft being connected to said impeller for rotation therewith; damper means about said other end of said cantilever shaft for reducing radial vibration of said cantilever shaft as it rotates through critical speeds and for substantial eliminating whirling of said cantilever shaft and impeller.

Claim 29

The machine according to claim 25, wherein said bowl is mounted for rotation independently of said impeller, further comprising: a second sleeve shaft mounted for rotation within said machine and around said first sleeve shaft, said second sleeve shaft being operatively connected to said bowl for rotation therewith.

Claim 30

The machine according to claim 26, wherein said damper means comprises a ring mounted to said second sleeve shaft about said other end of said cantilever shaft and means for resiliently biasing said ring to allow limited radial deflection of said cantilever shafting during rotation.

Claim 31

The machine according to claim 27, wherein said ring comprises an inner bore adjacent the outer diameter of said cantilever shaft, said inner bore including means for inducing loss of contact between said cantilever shaft and said rotating impeller, and said inner bore, whereby said whirling is substantially eliminated.

Claim 32

The machine according to claim 25, including means for introducing flowing fluid into said first sleeve shaft, wherein said damper means comprise: flow channel means for exhausting said fluid from said first sleeve shaft; and means for causing said fluid to fill substantially the radial clearance between said first sleeve shaft and said cantilever shaft in the region of said radial play.

Claim 33

The machine according to claim 25, wherein said damper means comprises a ring mounted in said machine, about said other end of said cantilever shaft and means for resiliently biasing said ring to allow limited radial deflection of said cantilever shaft during rotation.

Claim 34

The machine according to claim 30, wherein said ring comprises an inner bore adjacent the outer diameter of said cantilever shaft, said inner bore including means for introducing loss of contact between said cantilever shaft and said rotating impeller, and said inner bore, whereby said whirling is substantially eliminated.

Claim 35

The machine according to claim 25, wherein said damper means comprises an inner bushing spaced from said cantilever shaft; resilient means surrounding said bushing for absorbing energy imparted to said bushing by contact with said cantilever shaft; and outer mounting ring surrounding said resilient means; and means for resiliently biasing said mounting ring to permit limited radial deflection thereof.

Claim 36

The machine according to claim 32, wherein said means for absorbing comprises a layer of resilient material between said bushing and said mounting ring.

Claim 37

The machine according to claim 25, wherein said damper means comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 38

The machine according to claim 34, wherein said cantilever shaft comprises a conical portion and a radially extending horizontal portion at said other end, and said ring comprises a conical face on its inner diameter and a horizontal face, said conical portion and said conical face and said horizontal portion of said horizontal face being biased into contact.

Claim 39

The machine according to claim 32, wherein said damper means further comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 40

The machine according to claim 30, wherein said means for inducing loss of contact comprises a varying radius in said inner bore, whereby said loss of contact is induced as said shaft moves from contact with a portion of said bore having one radius to a portion of said bore having one radius to a portion having a larger radius.

Claim 41

In a centrifugal crushing machine of the type in which an impeller is mounted for rotation within a housing, the impeller being adapted to project particles of material toward the wall of the housing, the improvement comprising: an impactor mounted within said machine and having a supporting wall extending radially from said impeller; spaced impact targets arranged circumferentially on said supporting wall, said targets being spaced radially from said impeller and said housing wall and presenting impact surfaces to particles projected from said impeller, said impact surfaces being oriented at an angle to the path of said particles, whereby at least a portion of said particles are crushed by impact with said surfaces; a first sleeve shaft mounted for rotation within said machine; a central cantilever shaft rigidly connected at one end of said cantilever shaft within said first sleeve shaft and having substantial radial play within said first sleeve shaft at the other end of said cantilever shaft, said cantilever shaft being connected to said impeller for rotation therewith; damper means about said other end of said cantilever shaft for reducing radial vibration of said cantilever shaft as it rotates through critical speeds and for substantially eliminating whirling of said cantilever shaft and impeller.

Claim 42

In a centrifugal crushing machine of the type in which an impeller is mounted for rotation within a housing, the impeller being adapted to project particles of material toward the wall of the housing, the improvement comprising: an impactor mounted within said machine and having a supporting wall extending radially from said impeller; spaced impact targets arranged circumferentially on said supporting wall, said targets being spaced radially from said impeller and said housing wall and presenting impact surfaces to particles projected from said impeller, said impact surfaces being oriented at an angle to the path of said particles, whereby at least a portion of said particles are crushed by impact with said surfaces; a first sleeve shaft mounted for rotation within said machine; a central cantilever shaft rigidly connected at one end of said cantilever shaft within said first sleeve shaft and having substantial radial play within said first sleeve shaft at the other end of said cantilever shaft, said cantilever shaft being connected to said impeller for rotation therewith; damper means about said other end of said cantilever shaft for reducing radial vibration of said cantilever shaft as it rotates through critical speeds and for substantially eliminating whirling of said cantilever shaft and impeller.

Claim 43

The machine according to claim 38, wherein said impactor is mounted for rotation independently of said impeller, further comprising: a second sleeve shaft mounted for rotation within said machine and around said first sleeve shaft, said second sleeve shaft being operatively connected to said impactor for rotation therewith.

Claim 44

The machine according to claim 39, wherein said damper means comprises a ring mounted to said second sleeve shaft about said other end of said cantilver shaft and means for resiliently biasing said ring to cantilever limited radial deflection of said cantilever shaft during rotation.

Claim 45

The machine according to claim 40, wherein said ring comprises an inner bore adjacent the outer diameter of said cantilever shaft, said inner bore including means for inducing loss of contact between said cantilever shaft and said rotating impeller, and said inner bore, whereby said whirling is substantially eliminated.

Claim 46

The machine according to claim 38, including means for introducing flowing fluid into said first sleeve shaft, wherein said damper means comprises: flow channel means for exhausting said fluid from said first sleeve shaft; and means for causing said fluid to fill substantially the radial clearance between said first sleeve shaft and said cantilever shaft in the region of said radial play.

Claim 47

The machine according to claim 38, wherein said damper means comprises a ring mounted in said machine about said other end of said cantilever shaft and means for resiliently biasing said ring to allow limited radial deflection of said cantilever shaft during rotation.

Claim 48

The machine according to claim 43, wherein said ring comprises an inner bore adjacent the outer diameter of said cantilever shaft, said inner bore including means for inducing loss of contact between said cantilever shaft and said rotating impeller, and said inner bore, whereby said whirling is substantially eliminated.

Claim 49

The machine according to claim 38, wherein said damper means comprises an inner bushing spaced from said cantilever shaft; resilient means surrounding said bushing for absorbing energy imparted to said bushing by contact with said cantilever shaft; an outer mounting ring surrounding said resilient means; and means for resiliently biasing said mounting ring to permit limited radial deflection thereof.

Claim 50

The machine according to claim 45, wherein said means for absorbing comprises a layer of resilient material between said bushing and said mounting ring.

Claim 51

The machine according to claim 38, wherein said damper means comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 52

The machine according to claim 47, wherein said cantilever shaft comprises a conical portion and a radially extending horizontal portion at said other end, and said ring comprises a conical face on its inner diameter and a horizontal face, said conical portion and said conical face and said horizontal portion and said horizontal face being biased into contact.

Claim 53

The machine according to claim 46, wherein said damper means further comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 54

The machine according to claim 41, wherein said means for inducing loss of contact comprises a varying radius in said inner bore, whereby said loss of contact is induced as said shaft moves from contact with a portion of said bore having one radius to a portion of said bore having one radius to a portion having a larger radius.

Claim 55

In a centrifugal crushing machine of the type in which an inpeller is mounted for rotation within the machine and adapted to project particles of material toward at least one target surface, the improvement comprising: a first sleeve shaft mounted for rotation within said machine; a central cantilever shaft rigidly connected at one end of said cantilever shaft within said first sleeve shaft and having substantial radial play within said first sleeve shaft at the other end of said cantilever shaft, said cantilever shaft being connected to said impeller for rotation therewith; damper means about the other end of said cantilever shaft for reducing radial vibration of said cantilever shaft as it rotates through critical speeds and for substantially eliminating whirling of said cantilever shaft and impeller.

Claim 56

In a centrifugal crushing machine of the type in which an inpeller is mounted for rotation within the machine and adapted to project particles of material toward at least one target surface, the improvement comprising: a first sleeve shaft mounted for rotation within said machine; a central cantilever shaft rigidly connected at one end of said cantilever shaft within said first sleeve shaft and having substantial radial play within said first sleeve shaft at the other end of said cantilever shaft, said cantilever shaft being connected to said impeller for rotation therewith; damper means about the other end of said cantilever shaft for reducing radial vibration of said cantilever shaft as it rotates through critical speeds and for substantially eliminating whirling of said cantilever shaft and impeller.

Claim 57

The machine according to claim 51, wherein said at least one target surface is mounted for rotation independently of said impeller, further comprising: a second sleeve shaft mounted for rotation within said machine, and around said first sleeve shaft, said second sleeve shaft being operatively connected to said at least one target for rotation therewith.

Claim 58

The machine according to claim 52, wherein said damper means comprises a ring mounted to said second sleeve shaft about said other end of said cantilever shaft, and means resiliently biasing said ring to allow limited radial deflection of said cantilever shafting during rotation.

Claim 59

The machine according to claim 53, wherein said ring comprises an inner bore adjacent the outer diameter of said cantilever shaft, said inner bore including means for inducing loss of contact between said cantilever shaft and said rotating impeller, and said inner bore, whereby said whirling is substantially eliminated.

Claim 60

The machine according to claim 51, including means for introducing flowing fluid into said first sleeve shaft, wherein said damper means comprises: flow channel means for exhausting said fluid from said first sleeve shaft; and means for causing said fluid to fill substantially the radial clearance between said first sleeve shaft and said cantilever shaft in the region of said radial play.

Claim 61

The machine according to claim 51, wherein said damper means comprises a ring mounted in said machine about said other end of said cantilever shaft, and means resiliently biasing said ring to allow limited radial deflection of said cantilever shaft during rotation.

Claim 62

The machine according to claim 56, wherein said ring comprises an inner bore adjacent the outer diameter of said cantilever shaft, said inner bore including means for inducing loss of contact between said cantilever shaft and said rotating impeller, and said inner bore, whereby said whirling is substantially eliminated.

Claim 63

The machine according to claim 51, wherein said damper means comprises an inner bushing spaced from said cantilever shaft; resilient means surrounding said bushing for absorbing energy imparted to said bushing by contact with said cantilever shaft; an outer mounting ring surrounding said resilient means; and means for resiliently biasing said mounting ring to permit limited radial deflection thereof.

Claim 64

The machine according to claim 58, wherein said means for absorbing comprises a layer of resilient material between said bushing and said mounting ring.

Claim 65

The machine according to claim 51, wherein said damper means comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 66

The machine according to claim 60, wherein said cantilever shaft comprises a conical portion and a radially extending horizontal portion at said other end, and said ring comprises a conical face on its inner diameter and a horizontal face, said conical portion and said conical face and said horizontal portion and said horizontal face being biased into contact.

Claim 67

The machine according to claim 59, wherein said damper means further comprises a ring surrounding said cantilever shaft and means for resiliently biasing said ring into contact with said other end of said cantilever shaft to limit radial deflection thereof during rotation.

Claim 68

The machine according to claim 57, wherein said means for inducing loss of contact comprises a varying radius in said inner bore, whereby said loss of contact is induced as said shaft moves from contact with a portion of said bore having one radius to a portion of said bore having one radius to a portion having a larger radius.