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Патент USA US2408192

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Sept. 24, 1946.
‘
2,408,191
H. M. BARNETT ET AL
PULP WASHER
Filed March 27, 1944
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2,408,191
H. M. BARNETT ET AL
PULP WASHER
Filed March 27, 1944
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2,408,191
Patented Sept. 24, 1946
’ U‘NlTE-D;_ STATES PATENT OFFICE
' Harold" M. Barnett,
Long Beach, and-Rupert G'.
Masher, Downey, Calif.; saidMo'shfer assignor
to said Barnett
Application March 27, 1944, Serial No; 528,248
'6 Claims, (01. 100-37)
1
screws 24.
'I‘lhislinvention relates. to-a. machine. for wash
>
;
'
v
‘The upper runbrstretch of the foraminous
belt‘ 11‘ is supported by-rollers 28, 29, '30, 31
I
:Ou-r'machine is particularly adapted for wash
mounted‘ on-‘bearings: fastened to the main frame
sidezmembers- Z1, and disposed so that support
ing vvout carotene-containing ' particles vfrom
pulpedi‘carrots and. the: like." The carotene of V
roller-23 is: near a press roller 35 near the dis
chargeend of the; machine; support rollers 29
carrots: and. of other? carotene-containing vege
tables, is, for the most part, segregated inthe
vegetable in concentrated particlespor crystals,
enmeshediinthe. cellular plant. structure. When
They shaft 15 is also extended for.
mounting, thedrivepulley 25.,
ing out enmeshedv particlesfrom vegetable pulp
and the like.
‘
and 38' are- on either- side of intermediate press
10
' the ?brous cellular structure of, the carrot ‘is
disintegrated: or‘ pulped', the‘ carotene-containing
particles may be: mechanically‘ separated there
from‘, and it is the: object ‘of this invention to
provide‘ a machine for‘ continuously;-‘separating
roller 35;; andrsupport roller 31 is near feed’press
rol;1er,31.> The press- rollers 35, 36, and 31 bear
down on top of the upper stretch ofthe-belt II
and are. supported on the top frame members
40- by» shafts '4 I , 42‘, and 43, respectively, 1 mounted
inbearings-M.
I -
The-mainbelt'l‘l is driven by» a motor 48 hav
these » carotene particles orr' carotene-containing
ing} a drive pulley 49 with belt 5!]v toa speed re
particles fro‘r'n'the pulp of the vegetable;
ducingpulley?l which in turn by belt 55 drives
Our‘ invention will: be understood» by reference
the- pulley; 21_attachedlto the shaft 14 of the
to'the'j accompanying drawings forming part of f
roller [-35 which carries the foraminous belt II
20
these speci?cations in‘ which:
at‘ thedischarge end.v Press roller 35v is driven
‘Fig. 1 is a plan view of one form of our ma
through its attached pulley 52- by crossed belt
53q.~from pulley; 26'on1the'shaft M of: roller l3,
chine‘;
,
'
The feed; end roller 12 isdriven by the mainl belt
Fig; 2‘ is a; side-elevation of the same;
Fig. 3 is‘a ‘side elevation from the opposite side
11-, and. the; pulley 25v on- its shaft 15 drives the
from Fig: 2‘, with certain details‘ omitted to bet‘ 25 press roller 31 through its.» attached pulley 41
t'ei'; show the arrangement" of driving means;
by crossedbelt 53. Theiintermediate press roller
36 is. driven by the pulley 46 on its shaft 42 by
Fig. 4‘ is a crossesectional' View‘ taken ongthe
‘belt 54;,from: another pulley 56 on. the shaft 43 ~
liner-+4 of'Fig. 2';
,
5 is a crosses'ectionaljview' taken on the 30 of. the feed end press roller 31-.
line 5-5 ofFig. 2;
' t
'
‘
'
. ' Fig, 6' is. a cross-sectiontof a portion of the
foraminous belt, showingw details-thereof.
'
In general our machine consists of a horizon
tal foraminous conveyor belt upon which a
pulped‘i vegetable material’ is delivered from a
mill-,..with rollers. for successively squeezing out
the liquid naturally in they pulp and also that
,
The'pressv-rollers 35, 36;;31 arepreferably made
of; wood; and doctor or scraper blades 89,-: 51 and
58 are- provided‘ for each to remove material
which sticks'to- their surfaces. vA distributor
159¢< is-provided- behind, pressrroller 31 tocollect
the? caked'pulp scraped off the roll andlbreak
itfinto lumpsand; redistribute it towardthe cen
ter of the: main ‘belt ll; likewisea distributor
?lhisprovidedbehind press-roller 36‘ for'the same
which is- sprayed upontthe pulp as it passes on
the belt intermediatethe rollers,‘ with means for 40 purpose. The relatively dry- material scraped
from press roller 35 drops onto the end of belt
turning over and agitating the pulp, and ‘for
Ill.’ and isremoved by a’ scraper 6| pplaced'adja
collecting liquid.- with suspended solids. which
cent-the-b'elt as. it passes. over the eroller- 13.,
pass through the belt. Referring to the draw
ings-the foraminous beltil l is supported in hori
Pulped" vegetable materiaL. produced in the
charge end of the machine, is supported by bear
grinder shownaconventionally as 62,: driven by
the motor 63;, is carried to‘ the foraminous belt
I-l ,bythe' separate» conveyorwhich is shown for
ings 11» attached to end vertical members 18
and 19' of the-main frame of’ the machine, and
drum» $5 rotated through the pulley 66‘ and the
zontal'iposition on end‘ rollers [land i3 mounted
onrshafts l4 and 15. The shaft I4, at the dis
illustration as an inclined. belt‘ (54W 011 an upper
the. shaft is extended for mounting drive pul 50 belt 61 andthe drive pulley 69 of the, motor“
mounted‘ on the main frame at the feed end.
leys-26 and. 21 as detailed below. The shaft 15,
A-scraper 10 is'provided to remove the pulp from
at-the'feed. end of the belt is supported in bear
gl'ée. clolnveyor belt/611i and drop it on to the main
ings 22.- arranged to be adjustably attached to
themain'vframe sidermembers 2!} and 21 by means
of the ;belt vtightener-means} 23; with tightening
lti
.- r.
Nozzles.» are arranged to. ‘distribute water or
3
2,468,191
other liquids on the pulped material as it trav
els along with the main belt I I. As shown, fresh
water from pipe 1| is sprayed on to the material
following the intermediate roller 36 through
nozzles 12 and 13, and is collected beneath the belt
I! (top run) by a collecting pan 14 which drains
to a pump 75 which discharges into the pipe line
15, which carries the washings or fresh water or
a mixture of them, to spray nozzles 11 and 18,
4
off, and the broken lumps sprayed by fresh water
from nozzle 12. The lumps are steered toward
the center of the belt II by the distributor 60,
and further forcibly sprayed, as before, by water
jets from nozzles ‘l I. The water is ?nally squeezed
out by passing the pulp under press roll 35, the
semi-dry pulp cake being scrapedloff the wooden
roll by scraper 89, and then dropped onto the
belt H, and ?nally removed by the scraper 6| as
valves 19, 88, 8|, and 82 being provided for reg 10 the belt passes over the discharge roller l3. The
ulating the ?ow of liquid. to the several sprays.
liquid which goes through the belt ll between
Collecting pans 83 and 84 are provided beneath
_ press rolls 35 and 36, and that which is squeezed
the belt II for collecting the liquid from press
out by the press roll 35, is collected in the pan
rollers 31 and 36, and from the portion of the
14, and since this is usually dilute in carotene
belt II between them, and a reservoir 85 is pro 15 suspension, it may be recirculated by the pump
vided for storage of the liquid from which it may
15 to pipe line 16, where it again is used to wash
be pumped, as required, by pump 86 to other ves
out carotene from the fresher material. It is im
sels, not shown.
portant ,in the subsequent concentration of
The main belt Il may consist of any suitable
carotene that it be associated with a minimum
foraminous material which has openings of proper 20 amount of water. In starting, or at other times,
size to let the desired ?ne particles go through,
as may be desired, fresh water may be used in all
but ?ne enough to hold back the undesired larger
or a selected portion of the spray nozzles.
particles of pulp. We have used» various kinds
While we have described a preferred form of
of woven metallic screens but prefer a relatively
our invention, we do not wish to be limited to
coarse wire cloth belt 8'! with a cotton ?lter cloth 25 the particular embodiment described, but re
covering 88 as shown in Fig. 6. This provides a
strict our invention only insofar as required by
non-stretching belt base having su?icient strength
the prior art and the spirit of the appended
to permit the rollers to be pressed against it to
claims.
squeeze out the liquid from the pulp, and the
We claim:
cotton of other ?brous fabric may be selected 30
1. In a vegetable pulp washing machine of the
for suitable ?neness of openings. The fabric may
class described, the'combination of a foraminous ‘
be easily'renewed.
conveyor belt, end pulleys for said belt, upper
The operation of the machine will be illustrated
and lower pressing rollers extending across the
by its use in removing carotene-containing par
top run of said belt adapted topress therebe
ticles from carrot pulp, which isdropped onto 35 tween vegetable pulpucarried on its surface,
the main-foraminous belt II from the conveyor
scraping distributors-following each of said up
belt 64 leading from the grinder 62, and much
per rollers except thelast one adapted to break
of its liquid content is squeezed through the belt
up the caked pulp and to redistribute it on said
and collects in the pans 83 and 84 below. The
belt, and hydraulic sprayers disposed between
pulp is caked by the squeezing action between the 40 said upper rollers adapted to hydraulically agi
belt H and the press roller 31, and if the latter
tate and to wash the pulp on said belt.
is of Wood, or has a wood surface, as we prefer,
2. In a vegetable pulp washing machine of the
the pulp adheres to the roll surface until scraped
class described, the combination of a foraminous
offby a doctor'blade. It falls back in lumps onto , conveyor belt, end pulleys for said belt, upper
the main belt, and water or dilute washings (from 45 wood-surfaced rollers extending across the top
later stages) is forcibly sprayed through‘ nozzle
run of said belt adapted to press upon vegetable
18 on the lumps as these are forced toward the
pulp carried on its surface and to pick the caked
center portion of the belt by the distributor 59.
pulp off the belt, means to scrape the cake off
The other nozzles, represented as 11, are'directed
said upper rollers, distributors following each of
toward the oncoming lumps of more or less sat
said rollers except the last one adapted to‘break
urated pulp, the direction of impingement and
up the caked pulp and to redistribute it on said
amount of liquid being adjusted to avoid‘driv
belt, and hydraulic sprayers disposed between said
ing the pulp down against the cloth cover 88 of
upper rollers adapted to hydraulically agitate
the belt thereby forming a ?ltering bed. The
and to wash the pulp on'said belt.
colloidal or semi-colloidal particles containing 55
3. In a vegetable pulp washing machine of the
the'carotene must be mechanically disentangled
class described, the combination of a foraminous
from the pulp and separated therefrom by being
conveyor belt, end pulleys for said belt, upper
forced through the belt; any compacting of the
rollers extending across the top run of said belt
pulp on the cloth is to be avoided, because the
adapted to press upon vegetable pulp carried on
colloidal particles will be held in the matted ma 60 its surface, distributors following each of said
terial.
rollers except the last one adapted to break up
The combined effects of forming a compressed
the caked pulp and to redistribute it to the cen
pulp solid adhering to the wooden rollers which
ter portion of said belt, hydraulic sprayers dis
is broken up into lumps followed by further
posed between said rollers adapted to hydrau
breaking down these lumps with water jets to ef 65 lically agitate and to wash the pulp on said belt,
fect a maximum mechanical washing out of the
and means to collect the liquid passing through
emneshed colloidal particles bearing the
the top run of said belt.
'
carotene, without forming a ?ltering mat on the
4. In a vegetable washing machine of the class
foraminous belt are important to the success of
described, the combination of a foraminous con
this process for separating carotene.
veyor belt, end pulleys for said belt, upper wood
The wetted pulp is then passed through the
surfaced rollers extending across the top run of
intermediate press roll 36, squeezing out the Water
said belt adapted to press upon a vegetable pulp
and the suspended colloidal carotene particles,
carried on its surface and to pick the caked pulp
which are collected in the pan 84; the pulp is
off the belt, means to scrape the ‘cake off'said
again caught up by the wood roller and scraped 75 rollers, distributors following each" of said rollers
‘ 2,408,191
.
except the last one adapted to break’ up the
caked pulp and to redistribute it to the center
portion of said belt, hydraulic sprayers disposed
between said rollers adapted to hydraulically‘ jag- ,
itate andto wash the pulp on said belt, and pan
means to separately collect the liquid passing
through selected portions of the top run of said
belt.
'
,
5. In a vegetable pulp washing machine of the
class described, the combination of a foraminousv
,
conveyor belt, end
pulleys for said belt, upper
wood-surfaced rollers extending across the top
run of said belt adapted to press upon a vegeta
ble pulp carried on its surface and to pick up the
caked pulp off the belt, means to scrape the cake
off said rollers, distributors following each of said
rollers except the last one adapted to break up
the caked pulp and to redistribute it to the cen
6
'
collecting in some of said pans through a portion '
of said sprayers.
~ 6. In a vegetable pulp washing machine of the
class described, the combination of a foraminous"
belt, end pulleys for said belt, upper wood sur
faced rollers extending across the top run of said
belt adapted to press ‘upon, a vegetable pulp car
ried on its surface and to pick the caked pulp off
the belt, means to scrape the cake off said rollers,
distributors following each of said rollers except
- the last one adapted to break up the caked pulp
and to redistribute it on said belt, liquid spray
ers disposed between said rollers adapted to-hy
draulically agitate and to Wash the pulp on said
belt, pans to separately collect the liquid passing
through the top run of said belt in the feed por
tion and in the remaining discharge portion of
the belt, hydraulic means to deliver fresh water
to said sprayers over the discharge end pan, and’
ter portion of said belt, hydraulic sprayers dis
other hydraulic means to recirculate the liquid
posed between said rollers adapted to hydrau 20 collected in said discharge end pan to said spray
lically agitate and to Wash the pulp on said belt,
ers over said feed end pans.
pans to separately collect the liquid through‘ se
HAROLD M. BARNE'I‘T.
lected portions of the top run of said belt, and
RUPERT C. MOSHER.
pumping means adapted to recirculate the liquid
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