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Патент USA US2129329

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atented Sept., 6, 1938
2,129,32@
UNITEo STATES PATENT ÜFFI‘CE
2,129,329
LIQUOR»v FEED FOR DRUM DRIERS
Charles 0. Lavett, Buffalo, N. Y., assìgnor to Buf
falo Foundry & Machine Co.,l Buñalo, N. Y., a
corporation of New York
Application January s, 1937, serial No. 119,661
'
15 claims.
(ol. 15s-11')
This invention relates to aliquor feed for drum
driers and more particularly to a mechanism in
cluding a liquor feed pipe which is swung back
and forth along the valley or space between the
5 l two drums of an atmospheric double drum drier
for feeding the liquor to be dried thereto.
It is the object of this invention to provide a
simplified form as composed of a frame 5 having
two end heads 6 and 1 in which the opposite ends
of the shafts 8 and 9 of the drums I0 and II are
journaled. The drums are provided with the
usual end boards I2 and I3 which conñne the 5
liquor in the space or valley I4 between the drums
and the drums are illustrated as moving down
drier along the entire length of the drums by pro
wardly at their point of closest approach and
the dried material scraped off by doctor knives
I5, although it will be understood that the drums 10
viding a feed mechanism which is reciprocated or
could rotate in the opposite direction, i. e. up
simple and inexpensive mechanism for distribut
ing the liquor'fed to an atmospheric double drum
oscillated back and forth substantially the full ' wardly at their point of closest approach. The
' length of the drums, preferably in the manner of drums are supplied with steam or other vheating
15
a pendulum, so as to distribute the liquor evenly.
Another object is to provide such a feed mecha
nism which is particularly adapted to feed small
quantities of highly concentrated feed liquor
along the entire length of the drums of a drier
where the drums are of considerable length, uni
20 formity in the dried product not being attainable,
_ under such conditions, where the feed-liquor is
fed from a’stationary distributing manifold. .
Another object is‘to provide such a mechanism
in which the liquor may lbe discharged either in
25 the form of a solid stream or in the form of a
spray and in which the feed mechanism can be
provided with a plate or the like for stirring, agi- '
tating or breaking up the foam of the liquor held
between the drums if` the nature of the liquor
30 should require agitation or i-f the liquor should
have a tendency to foam.
-
Another aim is to provide such a pendulum feed
mechanism in which the speed and length of the
swing of the pendulum feed pipe can be readily
u:1.5
adjusted as may be desired.
'
45
being drawn upwardly through the hood 2li and
vent stack 22 and discharged. On the front and 25
rear walls of the vent stack 22 are mounted bear
ings 25 in which a horizontal rocking feed pipe I
26 is journaled. One end of this feed pipe is con
nected by a swivel elbow 21 with a liquor feed pipe
28 and the other end of the pipe 26 is plugged or ' 30
closed, the liquor from the rocking feed pipe 26
being discharged through a depending liquor feed
pipe .29, the lower discharge end of which is lo
cated in the valley or space I4 between the drums
I8 and Il. Theliquor feed pipe and particularly 35
‘ Another object is to _provide such a mechanism
its outlet can be of such size as to create no head
which is simple and inexpensive in construction
and is reliable in operation.
of liquor in the pipe or the outlet may be conñned
so ’as to maintain a pressure in the pipe. The
Fig. 1 is an end view, partly in section, showing
a conventional double drum atmospheric drier
liquor is preferably supplied by means of a varía
ble speed pump (not shown) of such construction 40
as to deliver a constant quantity of liquor. It
having a hood through which the vapors are vent
will also be understood, however, that the liquor
ed and equipped with a pendulum feed embodying
may be fed by gravity or any other suitable means.
my invention.
The axis o-f the rocking feed pipe 26 is at right
In the accompanying drawing:
40
medium by any suitable means (not shown) and
are rotated from a main drive shaft I8 which 15,
drives a large gear I9 on the shaft 8, this last gear
meshing with a similar gear (not shown) on the
shaft 9 so that the drums I0 and Il are driven
at the same speed.
Supported above the drums is a hood 20 hav
ing a reinforced lower rim 2| and tapering in
wardly and upwardly to avent stack 22 of reduced
size, the vapors generated on the drums I0 and Il
_
'
Fig. 2 is a fragmentary side elevation thereof,
partly in section. ‘
,
I
Fig. 3
a fragmentary side elevation of the
lower end of a modiñed form of' pendulum feed
pipe, viewed transversely of the axes of the drums,
50 the same being equipped with a spray nozzle and
also with a plate for 'agitating or breaking up the
foam of the liquor held between the drums;
The atmospheric drier in connection with
which my- invention is intended to be used can be
55 of any suitable construction and is illustrated in
angles to the axes of the drums I0 and II and
therefore upon rocking the feed pipe 26 the de
pending feed pipe 29 is swung along the valley or
space between the drums in the manner of a pen
dulum between the two dotted line positions illus
trated in Fig. 2.
».
_
,
To so rock the rocking feed pipe 2E the closed
end thereof is provided with a rock lever 38 which
is connected b_y a link 3| with a rock arm 32 fast
to a shaft 33. This shaft 33 extends parallel
with a rocking feed pipe 26 and is preferably sup
50
2
y 2,129,329
ported by bearings 34 carried by an angle-frame
35, the vertical leg of which is supported by the
reinforced lower rim 2| of the hood 28 and the
horizontal leg of which is supported by the vent
stack 22. A second rock arm 36 is secured to the
rock- shaft 33 and this rock arm is connectedvby
an adjustable rod 31 with a crank 38 on a crank
shaft 39. .The crank shaft 39 is rotated from the
main drive shaft |8 by means of an-endless chain
10 40 passing around a sprocket 4| on the main drive
shaft | 8 and a sprocket 42 on the crank shaft 39.
~ The speed at which the pendulum feed pipe
26 swings can be adjusted to suit the particular
liquor being handled by changing the sprockets
15 4| and 42. On certain concentrated solutions.,
three complete cycles per revolution of the drums
gave excellent results. The length of the swing
of the pendulum feed pipe can be increased or
decreased by lengthening or shortening any of the
20 rock arm centers. For this purpose the rock arm
36 is shown as having a series of holes 45 in any
of which the pin 46 connecting it to the adjustable
link 31 can be inserted to adjust the effective
length of the arm 36.
-
It will be seen that liquor from the main fee
pipe 28 flows through the swivel elbow 21 and
rocking feed pipe 26 into the depending feed pipe
concentration along the length of the drums oc
curs. _'I‘he pendulum feed pipe of the present in
vention distributes such small quantities of con- -
centrated -liquor over the entire length of the
drums and therefore largely eliminates such var
iations in concentration.
From the foregoing it will therefore be seen
that the present invention provides a very simple
and effective means for distributing feed liquor,
especially‘high concentrated feed liquor in small 10
quantities, to an atmospheric double drum drier
having drums of considerable length along sub
stantially the full length of the space or valley
between the drums and thereby reduces the dan
ger of non-uniformity in the dried product. The 15
feed mechanism is also adaptable for feeding any
type of liquor; the liquor can be sprayed or fed
as a solid stream; the mechanism is readily ad
.lustable both as to-the speed and throw of the
pendulum feed arm; and the pendulum feed arm 20
can be used as anagitator to agitate the liquor
between the drums or to break up foam.
I claim as my invention:
l. A double drum drier comprising a pair of
heated drums in close relation to one another, 25
end boards at the endsof said drums to maintain
a pool of feed liquor in the valley between said
drums, means for rotating said drums in oppo
of the feed pipe 29 directly into the valley or ~ site directions whereby a continuous layer of the_
30 space I4 between the drums of the drier. As the feed liquor is applied to both of said drums for 30
drums are rotated the main drive shaft I8, substantially the full length thereof and means
through the chain 40, drives the crank 38 which, for maintaining said pool in said valley, com
through the adjustable rod 31, reciprocates the prising va liquor feed mechanism having a dis
arm 36 and rock shaft 33, this reciprocating mo
charge oriñce means for continuously discharging
tion being transmittedthrough the rock arm‘ 32, the liquid through said orifice, said orifice being 35
link 3| and rock arm '30 to the rocking feed pipe arranged to deposit the liquor into the pool be29 so that itis discharged from the lower end
26. The length of swing so provided is adjusted
by adjusting the effective length of the arm 36
by selecting one of the holes 45 to attach the rod
40 31 and is preferably adjusted so that the depend
ing feed pipe 29 swings from the two extreme
positions illustrated by dotted lines in Fig. 2 and
thereby causes this depending pipe 29 to swing in
the manner of a pendulum back and forth be
tween the extremities of the drums and distribute
the liquor the full length of the drums.
Under some conditions it may be desirable _to
spray the liquor into the trough or valley between
tween the drums and means for reciprocating said
feed mechanism lengthwise o_f said drums to dis'
tribute the feed liquor lengthwise of said pool.
2. A double drum drier comprising a pair of 40
heated drums in close relation to one another,
end boards at the ends of said drums to main~
tain a pool of feed liquor in the valley between
said drums, means for rotating said drums in
opposite directions whereby'a continuouslayer 45
of the feed liquor is applied to both of said
drums for substantially the full length thereof and.
means for maintaining said pool in said valley,
the drums. To effect this the modified form of
50 pendulum feed pipe 26a, illustrated in Fig. 3, is
provided at its lower end with a spray nozzle 41.
With materials requiring agitation or with foam
ing materials it may also be desirable to provide
agitating means at the lower end of the pendu
55 lum feed pipe. Such agitating means may take
the form of plates 48 suitably secured to the
comprising a liquor feed Vinechanism having a
discharge orifice means for continuously discharg 50
ing -the liquid through said orifice, said orifice
being arranged to deposit the liquor into the
pool between the drums and means for moving
said feed mechanism back and forth lengthwise
of said drums to reciprocate said oriñce substan 55
tially the full length of said pool.
lower end of the pendulum pipe and sweeping
3. A double drum drier comprising a pair of
heated drums in close relation to one another,
end boards at the ends of _said drums to main
tain a pool of feed liquor in the valley between 60
said drums, means for rotating said drums in
through the material held between the drums so
as to agitate it and break up any foam.
The invention has particular application to the
distribution of a small quantity of liquor over
the entire length of a drum, the length of which
vis considerable. This has always been a dillicult
problem, particularly for liquors of heavy con
65 centration. Such liquors do not flow readily and
the amount of feed, therefore, could not be easily
controlled through a valve and the liquor then
distributed to a manifold.
With such concen
opposite directions whereby a continuous layer
of the feed liquor is applied to' both of said
drums for substantially the full length thereof and
.means for maintaining said pool in said valley, 65
comprising' a liquor feed mechanism' pivotally
supported a substantial distance above said drums
to swing on an axis disposed at right angles to
~the axis of said drums and including a depending
pipe having a discharge orifice arranged to de 70
posit the liquor into the pool between said drums,
trated liquors, the quantity to be fed to the
drums is also comparatively small because gen
erally most of the Water has been removed before
.the liquor is fed to the drums. If this small - means for discharging liquor through said orifice
quantity is fed from a stationary pipe, in contra
and means for rocking said mechanism to oscil
distinction, to the pendulum feed pipe of the late said pipe along the drums to distribute the
75 present invention, a variation in the degree of
feed liquor uniformly along said pool.
2,129,329
4. A double drum drier comprising a pair of
heated drums in close relation to one another,
end boards at the ends of said drums to main
tain a pool of feed liquor in the valley between
>said drums, means for rotating said drums in
3.
comprising a rocking pipe journaled a substantial
distance above said drums to swing about an axis
at right angles to the axis of said drums, means
for supplying liquor to said rocking pipe, a gen
10 comprising a rocking pipe journaled a substan
tial distance above said drums to swing about an
erally vertical pipe depending from said rocking
pipe and receiving the liquor therefrom and hav
ing an orifice at its lower end arranged to de
posit the- liquor into the valley between said
drums and means for oscillating said rocking pipe
to swing the lower end of said vertical pipe and 10
distribute the feed liquor lengthwise of said pool
axis at right angles to the axis of said drums,
means for supplying liquor to said rocking pipe.
a generally vertical pipe depending from' said
15 rocking pipe and receiving the liquor therefroml
comprising a rock arm on said rocking feed pipe,
a crank, and means operatively connecting said
rock arm and crank and including means for'
adjusting the maximum arc of said depending 15
opposite directions whereby a continuous layer
of the feed liquor is applied to both of said
drums for substantially the full length thereof and
means formaintaining said pool vin said valley,
and having an orifice at its lower end arranged
to deposit the liquor into the pool between said
drums and means for oscillating said rocking
pipe to swing the lower end of said vertical pipe
20 and distribute the feed liquor lengthwise of said
pool.
5. A double drum drier comprising a pair of
heated drums in close relation to one another,
end boards at the endsof said drums to main
pipe.
8. A double drum drier, comprising a pair of
heated drums in close relation to one another,l
end boards at the ends of said drums to main
tain a pool of feed liquor in the valley between 20
the drums, means for rotating the drums in op
posit'e directions whereby a continuous layer of
the feed liquor is applied to both of said drums
Afrom said pool- for substantially the full length
25 tain a pool of feed liquor in the valley between thereof, a hood over the drums to cool the vapors
said drums, means for rotating said drums in generated in the drying operation and means
opposite directions whereby a continuous layer for maintaining said pool, comprising a liquor
of the feed liquor is applied to both of said feed mechanism suspended from said hood and
drums for substantially the full length thereof and having a discharge orifice, means for continuous
30 means for maintaining said pool in said valley, " ly discharging the liquid through said orifice, said 30
comprising a rocking pipe journaled a substan
orifice being arranged to deposit the liquor into
tial distance above said drums to swing about an the pool between the drums and means for re
axis at right angles to the axis of said drums, ciprocating said feed mechanism lengthwise >of
means at one end of said rocking feed pipe for said drums to distribute the feed liquor length
35 supplying liquor to said rocking pipe, a generally wise of said pool.
.
35
vertical pipe depending from said rocking pipe
9. A do‘uble drum drier, comprising a. pair of
and receiving the liquor therefrom and having an heated drums in close relation to one another,
orifice at its lower end arranged to deposit the end boards at the ends of said drums to main
liquor between said drums and means at the op
tain a pool of feed liquor in the valley between
posite end of said rocking feed pipe for oscil
the drums, means for rotating the drums in op 40
lating said rocking pipe to swing the lower end posite directions whereby a continuous layer of
of said vertical pipe- and distribute the feed the feed liquor is applied to both of said drums
liquor lengthwise of said pool.
o
from said pool for substantially the full length
6. A double drum drier comprising a pair Vof thereof, a hood over the drums to cool the vapors
heated drums in close relation to one another, generated in the drying operation and means 45
end boards at the ends of said drums to main
for maintaining said lpool, comprising a rocking tain a pool of feed liquor in the valley between pipe journaled in bearings provided in said hood
said drums, means for rotating said drums in and disposed at right angles to the axis of said
opposite directions whereby a continuous layer drums, _a liquor supply pipe, a swivel connection
50 of the feed liquor is applied to both of said between said supply pipe and said rocking pipe, 50
drums for substantially the full length thereof and a pipe hanging from said rocking pipe and re
means for maintaining said pool in said valley, ' ceiving liquor therefrom, the lower end of said
y comprising a rocking pipe journaled a substan
hanging pipe being open and arranged to de
tial distance above said drums to swing about` posit the liquor into the pool between 'the drums
55 an axis at right angles to the axis of said drums, and means for rocking said rocking pipe to swing
means for supplying liquor to said rocking pipe, said hanging .pipe lengthwise of the drums to
a generally vertical pipe depending from said4 distribute the feed liquor lengthwise of said pool.
roclíing pipe and receiving the liquor therefrom
10. A double drum drier; comprising a pair of
and having an orifice at its lower end arranged heated drums in close relation to one another,
60 to deposit the liquor into the pool between said end boards at the ends of said drums to main noo
drums and means for oscillating said rocking pipe tain a pool of feed liquor in the valley between
to swing the lower end of said vertical pipe and
distribute the feed liquor lengthwise ofA said pool the drums, means for rotating the drums in op
comprising a rock arm on said rocking feed pipe, posite directions whereby a continuous layer of
a
crank, and means operatively connecting said -the feed liquor is applied to both of said drums 65
65
from said pool for substantially the full length
rock arm and crank.
7. A double drum drier comprising a pair of thereof, a hood over the drums to cool the vapors
heated drums in close relation to one another, generated in the drying operation and means
for maintaining said pool, comprising a rocking
end boards;` at the ends of said drums to main
70 tain a pool of feed liquor in the valley between pipe journaled in bearings provided in said hood 70
said drums,` means for rotating said drums in and disposed at right angles to the axes of said
opposite ydirections whereby a continuous layer drums, a liquor supply pipe, a swivel connection
of the feed liquor is applied to both of said between said liquor supply'pipe and said rocking
drums for substantially the full length thereof and pipe, a pipe hanging from said rocking pipe and
75 means for maintaining said pool in said valley, receiving liquor therefrom, the lower end of said 75
4
„
v
2,129,329
hangingk pipe being disposed in the valley ‘be
tween said drums and having an opening to de
posit theliquor into said pool and means for rock
l ing said rocking pipe to swing said hanging pipe
lengthwise of the pool to distribute the liquor
therealong, comprising a crank rotated by the
drive mechanism for said drums, a rock arm fast
to said rocking pipe andgan adjustable linkage
connecting said crank'and rock arm.
10
11. A liquor feed for a drum drier, comprising a
liquor feed mechansm having a discharge oriñce
arranged to deposit the liquor on the drum, means
for reciprocating said feed mechanism lengthwise
of said drum to distribute the feed liquor there
15 along, and means carried by said reciprocating
means for agitating the liquor deposited on said
drum.
12. A liquor feed for a drum drier, comprising
a liquor feed mechanism pivotally supported a
20 substantial distance above said drum to swing on _
with said pipe and agitating the liquor in said
valley.
'
14. lA doubledrumdrler comprising a pair of
heated drums in close relation to one another,
end boards at the ends of said drums to main
tain a pool of feed liquor in the valley between
said drums, means for rotating said drums in`
opposite directions _wherebya continuous layer
of the feed liquor is applied to both of said
drums for substantially the full length thereof and 10
means for maintaining said pool in said valley,
comprising a liquor feed mechanism having a dis
charge orifice means for continuously discharg
ing the liquid through said orifice, said orifice
being arranged to spray the liquor into the pool 15
between the drums and means for reciprocating
said feed mechanism lengthwise of said drums
to distribute the feed liquor lengthwise of said
pool.
,
,
15. A double drum drier comprising a pair of 20
an axis disposed at right angles to the axis of
said drum and including a depending pipe having
a discharge oriñce arranged to deposit the liquor
heated drums in close relation to one another,
end boards at the ends of said drums to main
on said drum, means for rocking said mechanism
said drums, means for rotating said drums in
tain a pool of feed liquor in the valley between
the feed liquor uniformly thereto, and means
opposite directions wherebyr a continuous layer 25
of the feed liquor is applied to both of said
oscillating with said pipe and agitating the liquor
drums for substantially the full length thereof and
deposited on said drum.
13. A liquor feed mechanism for„ an atmos
means forl maintaining said pool in said valley,
comprising a liquor feed mechanism pivotally
supported a substantial distance above said drums 30
to swing on an axis disposed at right angles to
the axis of said drums and including a depending
pipe having a discharge orifice means for con
25 to oscillate said pipe along the drum to distribute
30 pheric double drum drier, comprising a liquor
feed mechanism pivotally supported a substantial
distance above said drums to swing on an axis
disposed at right angles to the axes of said drums
and including a depending feed pipe the lower
35 end of which is disposed in the valley between
said _drums and is provided with a discharge orl
fice arranged to deposit the liquor in said valley,
means for rocking said mechanism to oscillate
said pipe along said valley to distribute the feed
40 liquor uniformly thereto and means oscillating
tinuously discharging the liquid through said
orifice, said oriñce being arranged to spray the 35
liquor on said drums, and means for rocking said
mechanism to oscillate said pipe along the drums
to distribute the feed liquor uniformly along said
pool.
CHARLES O. LAVE'I'I‘.
40
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