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Патент USA US3028110

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April 3, 1962
P. M. PERRINE
3,028,105
MULTIPLE CAGE DI
Filed April 8, 1960
.01
m
INVEN TOR.
PAUL M. PERRl/VE
BY jL-yQ?caZi.
HIS ATTOR E Y
ice
3,028,195
Patented Apr. 3, 1962
2
3,028,105
MULTIPLE CAGE DISINTEGRATGR
PaulpM. Perrine, Lawrenceburg, Ind, assignor to Sterl
man Foundry and Machine Company, Inc., Aurora,
Ind., a corporation of lndiana
Filed Apr. 8, 1960, Ser. No. 21,046
5 Claims. (Cl. 241-188)
illustrated therein is generally similar to the multiple
row cage type mills presently in use in the industry,
having a cylindrical rigid housing 8, formed by spaced
apart end members 9a and 9b which are connected to
gether by a center member 10, the member 10 being
altered at the bottom to provide an opening 11, best
shown in FIG. 2, for the discharge of the disintegrated
material. The end member 9a is also provided with an
opening 12 which communicates with a hopper 13 where
mill of the multiple cage type and, in particular, is 10 by the material to be disintegrated is introduced in the
mill. A semi-circular shield 14 is arranged concentrical
addressed to the improvement therein which obviates the
This invention relates to an improved disintegrator
the series of pins which serve as the movable disinte
ly of the shaft 16 and located in the opening 12, for
the purpose of protecting the shaft from the material
issuing from the hopper 13 into the mill. As is the cus
grator elements are secured at one end to rotatable car
15 tomary practice, the internal portions of the housing 8
serious wearing problem prevalent in existing mills.
In multiple cage disintegrator mills presently in use,
rier rings, in which construction there is an opening or
‘in clearance provided between the unsupported ends of the
‘l, pins and the adjacent faces of the carrier rings. The
that are exposed to the violent pounding and shock inci
dent to the operation of the mill are additionally rein
forced by secondary members, such as plates 15.
The internal operating members of the disintegrator
and secured in a common ring designed to give stiffness 20 comprises a pair of opposed co-axial driven shafts 16 and
17 which are arranged to project into the housing 8, be
to the assembly. In this construction, one of the primary
ing supported by external bearings and driven by power
causes of failure of the operative elements invariably can
unsupported ends of the pins are usually interconnected
be traced to the excessive wear of the unsupported end
means, not shown. The disintegrator ends of the shafts
assemblies of the pins, including the ends of the pins
themselves and the securing rings. This excessive wear
is brought about primarily when the material being dis
are provided with hubs .18 and 19 which are rigidly se
cured to their respective shafts in such a manner that the
integrated ?nds its way between the ends of the pins
and the adjacent faces of the carrier rings; it being ap
preciated that, during the operation of the mill, these
surfaces are rotating in opposite directions thereby re
sulting‘in considerable friction between the elements.
This condition is aggravated by the surprising fact
that, when subjected to the high speed rotational action
shaft 16 projects into the housing farther than the shaft
17, whereby the hub 18 will not interfere with the ef
fective introduction of material into the mill. To each
hub 18 and 19, there is a?ixed a sturdy carrier disk 21
30 and 22 respectively by means of a series of bolts 23,
several of which are shown in FIG. 1. Also, as shown
in FIG. 1, the carrier disk 22 represents a continuation
of the ?angelportion of the hub 19 whereas the carrier
disk 21 is so constructed that it is made up of two sepa
of the :cages, most of the material tends to flow towards
the ends of the pins. Since there is less resistance at the 35 rate disks designated in the drawings by reference char-_
acters 21 and 21a. As in the case of the preferred loca
ends than at the center areas, the material consequently
tion of the hub 13, the divided construction of the disk
?nds its way between the ends of the pins and carrier
21 permits ample clearance for the effective introduction
disks. This wear inevitably results in the unsupported
of the material into the mill.
ends of one or more of the pins being rapidly worn to
The distintegrator mill illustrated in the drawings is
the point where detachment from the rings occurs, there 40
what is commonly referred ‘to as a four row cage type
by resulting in a breakdown of the mill.
wherein two series of pins 24 and 26 are secured to the
In order to correct for this condition, the invention
disks 21 and ‘21a respectively and two series of pins 25
herein disclosed provides for arranging one or more pro
and 27 are also, respectively, connected to the disk 22.
tective elements, made preferably in the form of a metal
The pins of each series are located at a common radial
band, in the mill in such a manner that the material
distance from the center of the disks and equally spaced
passing through the disintegrator is to a substantial ex
therearound, extending perpendicularly away from the
tent prevented from passing between the opposing sur
disks. As noted in FIG. 1, the series of pins, being at
faces of the pins and carrier disks. These protective ele
different radial distances with respect to the centers of
ments are, therefore, arranged and constructed to serve
the disks, fit into a nested relationship with respect to one
as an effective material guide for the purpose of directing
another and, by virtue of disks 21 and 21a being secured
the material away from the ends of the pins.
to shaft 16 and disks 22 to oppositely rotating shaft 17,
Not only do the bands serve as protective members to
the series of pins 24 and 26 rotate in opposite directions
prevent the material from getting between the opposite
to pins 25 and 27. The ends of the pins 24, 25, 26 and
rotating surfaces of the pins and carrier disks, but, just as
27 are suf?ciently long to extend through suitable open
important, the band is constructed so as to collect suf
ings in the disks so that attachment to the disks is effected
?cient material which is prevented from escaping by the
centrifugal forces generated during operation of the ro
tating elements.
The material so collected covers the
by upsetting the ends. The ends of the pins 25, 26 and
27 are similarly upset for attachment to the rings 28a,
28b and 280. In this particular construction, the rings
inner circumferential surfaces of the bands, thus pro
tecting the bands from coming into direct contact with 60 28a and 28b are arranged between the carrier disks
21a and 22 and hence, the pins of the counter-rotating
the remainder of the material and hence, in this way,
series are subject to violent contact with the undisin
avoids wear of the bands.
These objects as well as the various other novel
tegrated and partially disintegrated material. Also, with
respect to the two intermediate series of pins, there exists
features and advantages of the invention will become ap
parent from the following description and accompany 65 a slight clearance between the faces of the carrier disks
21a ‘and 22 and the ends of the pins 25 and 26 and the
ing drawings of which:
outside faces of the rings 28a and 28b.
FIG. 1 is a partial vertical sectional view taken through
As heretofore mentioned, it is one of the objects of this
the center of a disintegrator incorporating the features
invention to obviate the excessive wear to which the ends
of the present invention, and
FIG. 2 is a partial sectional view taken on lines II— 70 of the pins and the rings 28a and 28b are subjected. This
object is uniquely accomplished by providing continuous "
II of FIG. 1.
With reference to the drawings, the disintegrator mill
metal bands 29a and 29b which are secured to and adapted
3,023,105
A
a
to extend perpendicularly from the carrier disks.
2. In a disintegrator apparatus according to claim 1
wherein said band encircles ‘the innermost series of said
The
bands are located so as to encircle the immediate inner
pins.
series of pins 24 and 25 and are of sufficient width so as to
extend from the inner faces of the carrier disks to the in
side edges of the rings 28a and 281), wherein they serve as
shields, thereby to prevent material from passing between
the carrier disks and the ends of the pins and consequently
protect the ends of the pins and the inner circumferential
surfaces of the rings 28a and 28b.
In addition to the shielding and protection afforded by
3. In a disintegrator apparatus comprising two shafts
arranged co-axially with respect to each other and rotat
able in opposite directions, a carrier disk extending in a
radial direction, from the axes of each of said shafts, se
cured thereto and rotatable therewith, at least one series
of circumferentially spaced pins connected at one end to
10 one of said carrier disks and extending in a direction sub
the bands 29a and 2% as employed in the manner herein
disclosed, the band 29a, in particular, serves as an effective
material de?ecting or directing member so that the undis
integrated material is con?ned to pass toward the center
stantially perpendicularly therefrom, and at least one
series of pins connected in like manner to said other carrier
disk and at a radial distance from said shafts greater than
that of said other series, said two series of pins being ar
of the mill, hence resisting and reducing the tendency of
the material to ?ow towards the ends of the pins which
ends of each series terminating adjacent to the carrier disk
otherwise would occur, as explained heretofore. An even
of the other so as to form two oppositely rotatable cages,
ranged one to rotate within the other with the unsupported
more surprising result is the fact that the centrifugal force
generated during operation of the mill causes the material
to be collected in the pocket formed by the ‘bands and the
carrier disks. This material builds up in the area adjacent
a band arranged adjacent to the unsupported ends of the
innermost series of said pins and secured to said carrier
to the disks to an extent that the material itself also func
ends of said other series of pins.
disks and having a width sufficient to extend a substantial
distance in a direction along the length of the unsupported ‘ '
4. In a disintegrator apparatus comprising a rotatable \
tions as a protective agent, this by reason of the fact that
shaft, carrier members extending in a radial direction from
the material which spills over the edges of the bands has
been found to slip over the material adjacent to the band 25 the axis of said shaft, secured thereto and rotatable there
with, at least one series of circumferentially spaced disinte
rather than over and in direct frictional contact with the
grating elementsconnected to one of said carrier members
band itself.
and extending in a direction substantially perpendicularly
It will be appreciated that while the present invention
therefrom, and at least one series of disintegrating ele
type disintegrator mill, the use of bands as herein disclosed 30 ments connected in like manner to said other carrier mem
ber at a radial distance from said shafts greater than that
may be employed with equal success in any multiple row
of said other series so as to form two rotatable cages in
cage mill in which the band may be used either as a sealing,
which construction there is a clearance between the ends
protecting or material-directing member.
of several of ‘the elements and the adjacent inner face of
In accordance with the provisions of the patent statutes,
I have explained the principle and operation of my inven 35 the other carrier member, a band arranged adjacent to the
unsupported ends of at least one of said series of elements
tion and have illustrated and described what I consider to
and secured to said carrier members and extending in a
represent the best embodiment thereof. However, I desire
direction along the length of the unsupported ends of said
to have it understood that within the scope of the appended
elements.
claims, the invention may be practiced otherwise than as
5. In a disintegrator apparatus comprising a shaft, car
specifically illustrated and described.
rier members extending in a radial direction from the axis
I claim:
of said shaft, one of which is secured thereto and rotatable‘
1. In a disintegrator apparatus comprising co-axial
therewith, at least one ‘series of circumferentially spaced
shafts rotatable in opposite directions, spaced apart car
disintegrating elements connected to one of said carrier
rier disks extending radially from the axes of said shafts,
members and extending in a direction toward the other,
secured thereto and rotatable therewith, at least one series
and at least one series of disintegrating elements con
of circumferentially spaced pins connected at the one end
nected in like manner to said other carrier member so as to
thereof to one of said carrier disks and extending in a
has been described in connection with a four row cage
direction substantially perpendicularly therefrom, and at
least one series of pins connected in like manner to said
other carrier disk, one of said series of pins being arranged '
form two cages, one rotatable relative to the other and in
which construction there is a clearance between said ele
ments and the adjacent carrier member, a protective mem
to rotate within the other series, with the unsupported
ends of each series terminating adjacent to the carrier disk
ber arranged adjacent to the unsupported ends of at least
of the other series and with a slight gap therebetween so as
extend in a direction along the length of said unsupported
ends of said elements.
one of said series of elements having a width sufficient to
to form two cages rotatable in opposite directions, rings
secured to the unsupported ends of said pins, a continuous
References Cited in the ?le of this patent
UNITED STATES PATENTS
annular band arranged adjacent to the unsupported ends
of the innermost series of said pins, said band being se
cured to the carrier disks supporting said series of pins and
being of a width su?icient to form a barrier across the gap
between said unsupported ends of said pins and said car
rier disks and the portion of the ring adjacent thereto.
60
518,010
2,033,757
Stedman ____________ __ Apr. 10, 1894
Crites ______________ __ Mar. 10, 1936
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