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Патент USA US3061188

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Oct. 3o; 1962
F. P. GOOCH
3,061,181
CENTRIFUGES
Filed Nov. 28, 1958
4 Sheets-Sheet 1
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INVENTOR.
FRED P. GOOCH
BY
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ATTORNEY
Oct. 30, 1962
F. P. GoocH
3,061,181
CENTRIFUGES
Filed No'v. 28, 1958
4 sheets-sheet 2
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INVENTOR.
FRED P. GOOOH
ATTORNEY
34h
Oct. 30, 1962
F. P. GoocH
3,061,181
CENTRIFUGES
Filed NOV. 28, 1958
4 Sheets-Sheet 3
INVENTOR.
FRED P. GOOCH
,
ß'Y/wbwayim
ATTORNEY
United States Patent ’Oñ?lce
1
3,061,181
CENTRIFUGES
Fred P. Gooch, Pine Ridge, Pa., assignor to The Sharples
Corporation, a corporation of Delaware
Filed Nov. 28, 1958, Ser. No. 776,971
8 Claims. (Cl. 233-7)
This invention pertains generally to centrifugal sepa
rators, and particularly to centrifugal separators of the
solids-discharge type. The invention pertains more par
ticularly to solids-discharge type centrifuges that employ
a plow or conveyor for the movement axially within the
centrifuging zone of separated solids in effecting the
discharge of the same from the rotor.
Centrifuges of the above-mentioned type having wide
i,
3,051,181
Patented Oct. 30, 1962
2
broken, of the portion of the centrifugal machine of
ÈIGURE 1 generally indicated on FIGURE l by the letter
; and
FIGURE 5 is a broken sectional elevation of struc
ture for the discharge of liquid from the centrifugal ma
chine of FIGURE 1.
Referring now more particularly to FIGURE l, at
10 is shown a centrifugal machine having an outer shell
or framework 11 comprised of top ‘12, upper side por
tion 13, lower side portion 14, bottom 15, and base 16.
Shell or framework 1-1 may be supported in any desired
manner, eg. by brackets 17 engaging supports 18.
Within outer shell or other framework 11 is inner shell
20 comprised of upper portion Z1, liquid eñluent re
ceiving portion 22, and lower portion 23, shell 20 being
variation in structural detail are well-known in the art,
so connected together and so disposed with respect to
but insofar as I am aware, all suffer from one or Ymore
bottom 15, base 16 and casing Z4, the latter extending
downwardly from rotary mechanism support 25 mounted
major limitations.
For instance, it is frequently desired to effect centrifugal
separation of solids from a mixture containing a substance
or substances of relatively high vapor pressure, e.g. a
liquid solvent or diluent or product of relatively low
boiling point. To attempt to conduct such »a separation
by centrifuging at atmospheric pressure would result in
undue volatilization of the liquid, an undesirable eventu
ality for several reasons, among which are interference
with eiìicient separation of solids, loss of liquid by vapori
zation, and/ or escape of toxic and/ or `disagreeable vapors.
Avoidance of the latter is of course highly desirable in
any type of separation quite apart from relative volatility. ‘
Sealing of a centrifuge to permit operation under ele
vated pressure and/or to prevent the escape of vapors
is a Well-known expedient, but in view of structural limita
tions inherent in prior art solids-discharge centrifuges of
the type in question, such sealing heretofore has been
very difficult to satisfactorily accomplish. An outstanding
feature of the invention resides in a novel structure, com
bination and larrangement of parts resulting in a highly
effective and eiiicient sealing ideally meeting the require
ments of continuous centrifugal separation, including such
separation under relatively high elevated pressure condi
on top 12, as to provide a generally vapor-tight cham
ber 26 capable of being pressurized to lany desired ele
vated pressure.
Portions ‘21, '22 and 23 of `shell 210 may be secured to
gether by any desired means, such as by screws or bolts,
the assemblage being mounted on` and within shell 11
as indicated at 27, a sliding ifit lat 281, sealed by gasket
29, being provided to `allow for differential expansion and
contraction between shells 11 and 210 below points of
mounting 27. If desired, provision also may be made
to allow for differential expansion and contr-action above
the points of mounting 27, such as at the connection 31
between portion 21 of shell 2G and casing 24. Thus con
nection 3‘1 may be in the form of a laterally and longi
tudinally slidable seal, such as to be hereinafter more
particularly described.
The rotating mechanism of the invention is comprised
generally of rotor 312, gear box 3131, drive shaft assembly
34 and pulley 35, said rotating mechanism being mounted
and supported as a unit on or by rotary mechanism sup
ticularly at relatively high speeds. Another outstanding fea
port 25. It is to be particularly noted that gear box
313 is connected directly to rotor y312, that drive shaft as
sembly 34 is ‘directly connected to gear box 3131, that sup
port 25 is positioned about drive shaft assembly 34 ad
jacent gear box 33, and that pulley or other driving con
nection 35 is connected to drive shaft assembly 34 ad-jacent to support 25, but on the opposite side thereof
from gear box 33.
Gear box 3-3 may be of conventional or other design
ture of the invention resides in a novel combination and
and as shown includes a sun gear 36 to be held stationary
tions.
Another shortcoming in prior art solids-discharge
centrifuges of the type> in question is the absence of com
pactness and of design versatility to the extent essential
to smooth running and avoidance of undue vibration, par
arrangement of parts whereby smoother running at rela 50 from the exterior. This is accomplished by connecting
tively high speeds is afforded, and undue vibration avoided.`
sun gear 316 to shaft 37 extending axially through dr-ivev
Another shortcoming in prior -art solids-discharge
shaft assembly 341, and .securing shaft 37 from rotation by
centrifuges of the type >in question stems from the manner
aii‘ìxing it to bracket 38 attached to support 25.
in which the influent is fed to the machine, and the ef
Support 25, an embodiment of which will be herein
tluents withdrawn therefrom. -Another outstanding fea 55 after more particularly described, is ñexible in character
ture of the invention resides in structure providing im
so as to permit both pivotal and lateral movement to
provement in this respect.
allow the rotating mechanism to accommodate its motion
Additional features of the invention will become ap
during rotation to the requirements of rotation about an
parent to persons skilled in the art as the specification
axis passing through the center of mass, which require
proceeds, particularly in connection with the accompany 60 ments, in the case of unbalance, cause the rotating mecha
ing drawings in which:
'
FIGURE 1 is an elevation, partly in section, of =a cen
nism to rotate eccentrically, as is well-known.
trifugal machine embodying the invention;
manufacture, the latter axis is virtually coincident with
Although as the result of careful balancing during`
FIGUREI 2 is 'anV elevation, partly in section and shown
the geometric axis of the rotating mechanism, a certain
broken, of the upper portion of the centrifugal machine of 65 amount of unbalance almost unavoidably creeps in during
FIGURE l, and generally indicated on FIGURE 1 by the
use, due to, e.g. (l) unequal wear on parts, (2) slight
letter A;
change in positionV of parts upon reassembly after disas
FIGURE 3 is an elevation, largely 1in section and shown
sembly for cleaning or repair purposes, and/or more
importantly, (3) any unequal distribution of separated
broken, of the upper central portion of the centrifugal
machine of FIGURE 1, and generally indicated on _FIG 70 solids in the rotor during operation. The afforded free
dom of movement of the rotating mechanism laterally and
URE 1 by the letter B;
pivotally adequately provides to a highly practicable de
FIGURE 4 is an elevation, partly in section and shown
8,061,181
4
3
gree the required iiexibility necessary to the modified, ie.
eccentric, rotary motion during unbalance. Ideally and
the end of rotor 32 by ring` nut 69 which threadedly en
preferably, the support 25 is not only flexible, but also
Output shaft 71 of gear box 33, on the other hand, is
connected to solids plow or scroll 64, end 72 of shaft 71
gages rotor 32.
resilient so as to embody a restoring or centering force
urging the geometrical `axis of the rotating mechanism
(see FIGURE 4) being splined exteriorly for engagement
into a position coincident with the center line, or in other
words, the position of the axis of rotation under perfectly
of corresponding interior splines in annular-shaped mem
balanced conditions.
ber 73 which is connected to plow 64 as shown at 74.
Returning to gear box 33 (FIGURE 3), conventional
construction provides for two planetary gear cages 75
and '76.
_
Theoretically speaking, it is unnecessary to provide any
support or restraining mechanism at the lower end of
the rotating mechanism, that is, at its bottom. From a
The planetary gears 77 of cage 75 mesh with sun gear
36 as well as with internal gear 78 on peripheral member
practical point of view, however, it is found to be highly
79 of gear box 33.
preferable to provide mechanism at the bottom of the
The planetary gears 81 of cage 76, on the other hand,
rotating mechanism limiting the degree of its- free move
ment for starting and stopping purposes, this not being 15 mesh with sun gear 82 which is connected to gear cage
75 for rotation therewith as shown at S3, and also mesh
with internal gear 84 on peripheral member 79.
Gear cage 76 is connected to output shaft 71 which in
turn is connected to plow 64 as previously described.
The arrangement of gears in such as to provide a differ
ence in speed of rotation between rotor 32 and plow `64,
required during actual operation. Such mechanism limit
ing movement may take any shape, form or design, e.g.
that of a drag, or of an annular bumper.
The purpose is
to restrict, and/ or absorb the energy of, any undue vibra
tion or whipping which may occur during acceleration or
deceleration of the rotating mechanism upon starting .and
"stopping, In the drawings, an annular bumper is illus
trated at 41 surrounding and spaced annularly and ra
dially from lower end 42 of rotor 32.
and, in the case illustrated in FIGURE 3, output shaft 71
and plow 64 rotate at a slightly slower speed than gear
case 65 and rotor 32, the purpose and function of which
5 Having described the basic features of the invention, 25 will be hereinafter described.
I The centrifuging zone of the rotating mechanism is
detailed description will now be made of an embodiment
illustrated in FIGURE 4. As previously described, rotor
thereof by way of illustration.
32 and plow 64 rotate at different speeds so as to provide
Referring now to FIGURE 2, a flexible and resilient
a differential in rotation between the two parts.
support 25, as mounted on top 12 about drive shaft as
sembly 34, is illustrated in detail, the shaft assembly 30 _ Plow 64 may be of any desired design, conventional or
otherwise, „and as shown is comprised of a tubular base or
represented by numeral 34 and comprised of sleeve 34a
central portion 86 upon which is mounted a screw 87 hav
surrounding and secured to shaft 34b being vertically
ing a helical shape over one portion 88 and a spiral shape
supported for rotation in support 25 as shown, thrust bear
over another portion S9. The outer edge of helical por
ings 43 and roller bearing 44 being provided between
rotary shaft assembly 34 and non-rotating member 45 of 35 tion 88 conforms to the interior shape of rotor 32 and is
disposed closely thereto, and the outer edge of spiral por
support 25. Ca'p 46 which serves as a pulley for engage
ment by a belt is attached to shaft assembly 34 as illus
tion 89 conforms to the interior shape of a member 91 ar
ranged at the solids discharge end of rotor 32, and is
trated at 48.
disposed closely thereto.
Member 45 is supported on top 12 through the medium
At 92 is shown a solids discharge outlet, of which there
of spaced annular rings 51 and 52 secured to circumfer 40
may be any desired number spaced circumferentially,
ential rib 53 on member 45, outwardly projecting rings
and at 93 is shown a liquid discharge outlet, of which also
51 and 52 overlapping annular member 54 secured to top
ìlielîe may be any desired number spaced circumferen
12, said member 54 projecting inwardly into the space
ia y.
between rings 51 and 52, with circumferentially spaced
Liquid discharge outlet 93 may be of any desired design,
resilient members 55 and 56 interposed between member
45 shape and construction. As shown it is comprised of
54 and each of rings 51 and 52, as shown.
nozzle holder 94 (see FIGURE 5) fitted in the peripheral
Resilient members 55, as illustrated, are cylindrical
wall of rotor 32 in a manner to project outwardly there
and of rubber or other similar resilient plastic, whereas
from, and it is held in position by any suitable means,
resilient members 56, as illustrated, are comprised of a
plurality of circular frusto-conical shaped pieces of metal,
such as of spring steel, preferably arranged with bases
e.g. as shown.
50
Nozzle holder 94 has an inner channel
95 communicating with the interior of rotor 32, and a
discharge nozzle 96 of extremely hard abrasive-resistant
material, e.g. Carborundum, carried and secured in posi
opposed somewhat as illustrated for greater flexibility.
Resilient members 56 also serve for vibration damping
purposes by absorption of energy due to friction between
the individual pieces of metal during flexing. Either or
equivalent types of resilient members may be used alone
or in combination, e.g. circumferentially in alternate rela
tion in communication with channel 9S by bushing 97.
Nozzle 96 is preferably pointed so as to discharge in a
direction opposite to the direction of rotation of rotor
32 sto as to recover power by jet action.
Liquid effluent before reaching liquid discharge outlets
tion, such as illustrated, which contemplates an even num
ber of each, for example, 6 of each on each side of mem
93 must flow over the radially inner edge of annular dam
ber 54 arranged alternately and evenly spaced circumfer
entially.
60 effluent end of rotor 32 by any suitable means, e.g. as
98 (see FIGURE 4) secured in position at the liquid
` Upon referring to FIGURE 3, it will be seen that the
lower end of drive shaft 34 is secured to the upper face
of gear box 33, e.g. as shown .at 61, and that sun gear
36 is connected to shaft 37 through an internally splined
collar 62 which engages corresponding splines ori the 65
ends of shafts 37 and `63, the latter being integral with
shown.
An essential to the discharge of drained solids from
rotor 32 is that the inner circumferential edge of darn 98
must be at a greater radial distance from the axis of rota
tion than the radially outermost inner edge of solids dis
charge outlets 92, this being in accordance with the well
sun gear 36, and journaled as shown.
The interior of gear box 33 is conventional in con
known principle of operation of solid-discharge centrifuges
of the general type under consideration, whereby the
struction .and arrangement, its purpose being to provide
separated solids are brought closer to the axis of rotation
relative rotational movement between rotor 32 and solids 70 than the level of `liquid from which the solids are sepa
plow 64 disposed therein (see FIGURE 4).
rated, before discharge‘of the solids from the zone of
gear box 33 being secured to end plate 67 of rotor 32 as
centrifugation. Thus before the discharge of solids, the
solids are first removed from the liquid by being brought
closer to the axis of rotation, and thereafter liquid drained
illustrated at 68, plate 67 in turn being secured against
or removed »from the solids, the latter separated liquid
Casing 65 of gear box 33 is shown connected to rotor
32 about their respective peripheries, lower face 66 of
5,
flowing ‘back to »the main body -thereof. Solids are thus
'6
not only separated from liquid but also drained of liquid
liquid effluent receiving portion 22 of shell 20, from
which the liquid eñluent may >be removed by any desired
prior to the discharge of solids from the zone of cen
means, not shown.
trifugation.
In view of the new combination and arrangement of
Dam 98 is shown removable and therefore interchange Ul parts including support 25 and the position of the other ele
able, thus making the «depth of Iliquid in rotor 32 subject
ments with respect thereto and to each other, the rotating
to adjustment by the use of` dams of different inner radii,
mechanism accommodates its motion readily and smoothly
having in mind, however, what has been said above with
to the requirements of rotation about an axis passing
respect to the relative radial distances of Ysolid discharge
through the center of mass, whether the position of the
outlet 92 and the inner edge of dam 98 from the axis 10 later is stable or unstable, i,e. whether conditions of un
of rotation.
balance are temporary or permanent, or constant or vari
The mounting of plow 64 for rotation Within rotor 32
able. Resilient members 55 and 56 serve excellent-ly for
is subject to wide variation in engineering design. As
affording both pivotal and lateral movement, neither of
shown ybearings 1011 and 102 are provided at one end
between extension 103 on lower face 66 of gear box 33
which in view of the new structural combination and
and output shaft 71, and bearing 104 at the other end
between tubular base 86 of plow 64 and member 105
movement rarely need by hardly more than a few degrees,
e.g. between 1/2 and 2, and the lateral movement rarely
arrangement of parts need be large. Thus the pivotal
affixed to rotor 32.
hardly more than 1/10", e.g. between M50” and 1/L00” from
Seals have been illustrated for the prevention of leak
center during the eccentric rotation to meet the require
age to and from the various bearings to avoid contamina 20 ments of unbalance.
tion, and to and from the atmosphere for vapor or pres
To complete the description of an embodiment of the
sure sealing, but since their function and operation are
invention which incorporates vapor sealing and/ or pres
so well known, in the interest of brevity, detailed de
sure sealing, reference will now be made to connection
scription thereof will not be made.
31 between portion 21 of shel‘l 20 and casing 24 which
, The interior 106 of base '16, which as shown is com 25 connection is in the form of a laterally slidable seal to
pletely enclosed, and which also may be placed under
permit lateral and pivotal movement of support 25 with
pressure, serves, together with whatever receiver may be
out interference by shell 20.
connected thereto underneath, as a receiving chamber
Portion 21 is provided at its top with an annular mem
for solids discharged through outlets 92.
ber 127 having an annular recess 128 closed by an an
Annular 4bumper -41 is mounted on a two-piece circular 30 nular ring 129 and in which is slidab‘ly disposed an
support 107 which in turn is supported by circumferen
nular flange 13€) of member 131 which slidably engages
tially -spaced ribs 108. Bumper 41 is comprised of a
the bottom of casing 24. 'By the use of sealing gaskets
tixed back or outer annular portion ‘109, and an inner
at the various points indicated, e.g. at 132, a vapor-tight
movable member 110 between which is interposed a rub
joint is made permitting not only relative lateral move
ber ring 111. Member 110 is shown provided with an 35 ment with ilexibility between portion 21 and casing 24
interior ring '112 which conveniently is of graphite for
to accommodate lateral and pivotal movement of support
friction reducing purposes. The radial spacing between
25, but relative longitudinal movement as well to allow
ring 112 and lower end 42 of rotor 32 is conveniently
for unequal expansion and contraction of shell or frame
between 3;/32” and 'l/s", e.g. 1/16".
work 11 and shell 20 above points of mounting 27.
Feed pipe 1‘13 enters interior 166 of base 16 through 40
The foregoing particular description has been made in
opening 114, shown sealed or tight, then proceeds down
connection with the use of -shell or framework 11 and
ward as shown at 115, and eventually upward as shown
shell 20` in order to demonstrate the ease with which
at 116, making a U-turn not shown, and is connected to
the centrifugal machine of the invention may be made
centrifuge inlet pipe 117, the latter discharging into feed
vapor and/ or pressure tight. It is to be understood, how
chamber 118. The feed slurry flows from chamber 118
that the invention is not so limited, for it may be
through nozzles 1‘19, of which there may be any desired 45 ever,
employed with or without aV surrounding vapor and/or
number spaced circumferentia-lly, into the space between
pressure tight enclosure, as will be obvious.
plow or 4scroll base 86 and the inner periphery of rotor
Also the foregoing particular description has been made
32, which space comprises the centrifuging zone.
in connection with the use of a belt drive for driving the
The solids are thrown outwardly by centrifugal force,
deposit on the inner periphery of rotor 32, and due to 50 rotating mechanism, it being understood that any other
means for imparting rotary motion to the rotating mecha
the differential in speed of rotation of rotor 32 and plow
nism may be employed, e.g. gearing, or a direct drive.
64 and the shape of its screw 87, the solids are plowed
When employing a belt drive, it is frequentlyV preferred
toward solid outlets `92, from which they are discharged
to offset the belt pull or thrust With an equal, or substan
into interior 106, and drop down through base '16 into
a receiver, not shown, attached to the bottom of» base 16, 55 tially equal, and opposite pul'l or thrust imparted by any
suitable means permitting free flexing of support 2‘5. An
arrangement highly suitable for the purpose is illustrated
in FIGURE l wherein motor support 135 is hinged at
The difference in speeds of rotation of rotor 32 and
136 to member 137 secured to portion 13 of shell 11.
plow 64 is usually made relatively small, e.g. between
l() and 100 revolutions per minute, and, for any given 60 Turnbuckle 138 connects end 139 of support 135 to up
turned extension 140 on bracket 38, e.g. as shown. By
speed of rotation of rotor 32, e.g. 2000 r.p.m., is deter
virtue of a right-hand thread on one end and a left-hand
mined by the relative sizes of gears in gear box 33.
thread on the other end of turnbuckle 138, the turning
At times it may be desirable to rinse the solids, par
thereof varies the distance between pulley 141 on motor
ticularly after being lifted radially inwardly out of the
layer of liquid, such as with water. For such purpose 65 142 and pulley 35 for adjustment of the tension on or
tightness of belt 143. By virtue of the construction in
rinse liquid inlet pipe 121 is provided which -leads to pipe
cluding the ball and socket joints and the hinged arrange
122. Pipe A‘122 surrounds and is spaced from pipe 117,
ment at 136, support 25 is permitted to freely flex without
and has an outlet _123 leading to chamber 124 having
disturbing the tension on belt 143, or the driving of the
nozzles z125, of` which there may be any desired number
spaced circumferentially. Nozzles 125 discharge into the 70 rotating mechanism, support 135 permitting the free flex
ing of support 25.
'
centrifuging zone, preferably ata point where the solids
From the foregoing particular description it will be
have been moved radially inwardly out of the layer of
seen that, as compared to a solids-discharge centrifuge
liquid. Rinse liquid drains from the solids into the layer
operating on a horizontal axis with two fixed bearings,
of liquid in the rotor, and is discharged along therewith
over dam 98 and through liquid discharge outlets 93 into 75 such as disclosed in my U.S. Patent 2,703,676, the ad
preferably with a vapor tight seal for pressurizing pur
poses.
3,061,181
7
8
at the lower end of said rotor for limiting pivotal move
ment of said unitary structure, a plow rotatably mounted
bination of parts permitting (1) ease of encasement for
within said rotor, gearing within said casing, said gear
operation under high pressure; (2) the use of a single
ing geared to the interior of said casing, said plow con
relatively sma‘ll diameter seal for sealing such encase
ment; (3) the location of the seal at the end opposite 5 nected to said gearing for rotation by said gearing, means
for controlling rotation of said gearing relative to said
and above the solids-discharge end, thus freeing the seal
casing for effecting relative rotation between said plow
from the possibility of contamination; (4) the flexible
and said rotor upon rotation of said drive shaft, means
mounting of the rotary mechanism resulting in smoother
for feeding a mixture of liquid and solids into said rotor,
running at high speeds; (5) the placement of the gear
means for discharging separated liquid from said rotor,
box between the rotor and a single top support, making
vantages of this invention include a structure and corn
possible among other things the use of smaller diameter
drive shaft and bearings, for the output shaft of the gear
box does not pass through the drive shaft attached to
the gear box and its associated bearing or bearings; (6)
the placement of the gear box adjacent the rotor which
in turn allows the output shaft of the gear box to be
short and larger in diameter eliminating torsional vibra
and means for discharging separated solids from said
rotor.
5. A centrifugal machine comprising a frame, a drive
shaft, means surrounding said drive shaft for resiliently
mounting said drive shaft on said frame in upright posi
tion at a single locus, said means providing for both lateral
and pivotal movement of said drive shaft at said locus, a
gear box having a casing, said casing supported on said
tion; (7) the discharge of solids in a manner whereby
drive shaft and extending downwardly therefrom, a rotor
they fall by gravity into a receptacle, thus avoiding their
buildup at the solids-discharge end of the rotor; (8) the 20 supported on said »casing and extending downwardly there
use of a shorter feed tube to reduce the chance of the
feed tube rubbing the rotor as the rotating mechanism
passes through its resonant frequency or frequencies; and
(9) the placement of the solid and liquid discharges with
respect to each other so that possible leakage of one
to the other is avoided.
Having particularly described the invention, it is to be
understood that this is by way of illustration, and that
changes, omissions, additions, substitutions and/or other
from, means positioned on the opposite side of said
first-mentioned means from said gear box for rotating said
drive shaft, means for mounting said last-mentioned means
to follow pivotal and lateral movement of said drive shaft,
said drive shaft, said casing and said rotor being connect
ed together for movement including rotation as a unitary
structure, means positioned at the lower end of said rotor
for limiting pivotal movement of said unitary structure,
a plow rotatably mounted -within said rotor, gearing within
said casing, said gearing geared to the interior of said
casing, said plow connected to said gearing for rotation
by said gearing, means for controlling rotation of said
gearing relative to said casing for effecting relative rota
tion between said plow and said rotor upon rotation of said
modifications may be made without departing from the
spirit thereof. Accordingly it is intended that the patent
shall cover, by suitable expression in the claims, the
various features of patentable novelty that reside in the
invention.
drive shaft, means for feeding a mixture of liquid and
I claim:
solids into said rotor, means for discharging separated
l. A centrifugal machine comprising a frame, a drive
liquid Áfrom said rotor, and means for discharging separat
shaft, means for mounting said drive shaft on said frame
ed solids from said rotor.
in upright position at a single locus, said means provid
6. The centrifugal machine of claim 5 having a vapor
ing for both lateral and pivotal movement of said drive
shaft at said locus, a gear box having a casing, said 40 tight enclosure for the rotor.
7. The centrifugal machine of claim 5 having means
casing supported on said drive shaft and extending down
for rinsing solids with liquid in the rotor after initial sep
wardly therefrom, a rotor supported on said casing and
aration of said solids from liquid in said rotor.
extending downwardly therefrom, means for rotating said
8. A centrifugal machine comprising an upright drive
drive shaft, said drive shaft, said casing and said rotor
being connected together for movement including rota 45 shaft, a gear box having a casing, said casing supported on
said drive shaft and extending downwardly therefrom, a ro
tion as a unitary structure, a plow rotatably mounted
tor supported on said casing and extending downwardly
within said rotor, gearing within said casing, said gear
therefrom, said drive shaft, said casing and said rotor being
ing geared to the interior of said casing, said plow con
connected together as a unitary structure, means for
nected to said gearing for rotation by said gearing, means
for controlling rotation of said gearing relative to said 50 mounting said unitary structure for rotation and for lateral
and pivotal movement solely at a locus positioned above
casing for effecting relative rotation between said plow
said gear box and about said drive shaft, means for ro
and said rotor upon rotation of said drive shaft, means
tating said unitary structure, a plow rotatably mounted
for feeding a mixture of liquid and solids into said rotor,
within said rotor, gearing within said casing operatively
means for discharging separated liquid from said rotor,
connected to said casing, said plow operatively connected
and means for discharging separated solids from said
to said gearing, means for controlling rotation of said
rotor.
-gearing within said casing for effecting relative rotation
2. The centrifugal machine of claim l wherein the first
between said plow and said rotor upon rotation of said
mentioned means surrounds the drive shaft and resiliently
unitary structure, means for feeding a mixture of liquid
mounts the drive shaft on the frame.
3. The centrifugal machine of claim 1 which includes 60 and solids into said rotor, means for discharging separated
liquid from said rotor, and means for discharging sepa
means positioned at the lower end of the rotor for limit
rated solids from said rotor.
ing pivotal movement of the unitary structure.
4. A centrifugal machine comprising a frame, a drive
References Cited in the file of this patent
shaft, means surrounding said drive shaft for resiliently
UNITED STATES PATENTS
mounting said drive shaft on said frame in upright po
706,088
McCornack ___________ __ Aug. 5, 1902
sition at a single locus, said means providing for both
2,616,620
Zimmerman ___________ __ Nov. 4, 1952
lateral and pivotal movement of said drive shaft at said
2,625,321
Glasson ______________ __ Ian. '13, 1953
locus, a gear box having a casing, said casing supported
' 2,703,676
Gooch ________________ __ Mar. 8, 1955
on said drive shaft and extending downwardly there
Dahlgren ______________ __ Dec. 2, 1958
from, a rotor supported on said casing and extending 70 2,862,658
downwardly therefrom, means positioned on the opposite
k2,867,378
Harlow ________________ __ Jan. 6, 1959
1,002,689
1,020,930
Germany _____________ __ Feb. 14, 1957
Germany _____________ __ Dec. l2, 1957
side of said first-mentioned means from said gear box for
rotating said drive shaft, said drive shaft, said casing and
said rotor being connected together for movement in
cluding rotation as a unitary structure, means positioned 75
FOREIGN PATENTS
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