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Oct. 1, 1946.
2,408,675 I
‘o. c. NORTON ‘
BLOWER FOR HANDLING DESICCATED MATERIAL
Filed April 30, ‘1945
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2,408,675
Patented Oct. 1-, 1946
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MATERIAL
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‘ Orlo'Clair Norton, Erie, Pal
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Application April 30, 1945, serial No.-591,024
solaims. (01. 3027-37)
usually vertically and then laterally to the de
sired point of discharge. Journaled in the cas
ing is a rotary impeller 4. ‘ At. the left hand side of
casing l is a biracketi-which may form the ‘sup’
My present invention relates to blowers and
has for its object to provide a combined form-of
air pump and blower particularly adapted for
handling the distribution, of ?nely divided gran
ular material in a dry state. The invention
port for the apparatu's'and carries suitable journal
bearings for the impellershaft 6 which is rotated
from a suitable sourcieeof power and may be
comprehends the method. of mixing a continuous
stream of such material with a corresponding
drivenby a pulley ‘I. _ ' '
stream of air at their point of introduction to '
The bearings shown comprise ball races 8 and 9
a revolving impeller and s0 acting upon the com
which
are held in spaced relation by a spring Ill,
16
bined streams in a centrifugal manner that a
saidf'parts being". mounted in abox ll.
compressional effect is produced which will cause
'At‘the right, ‘handside of the casing l is a,
said material to travel for a considerable distance
tubular inlet l2,'disposed axially of the impeller
through a conduit with the expenditure of mini
mum power.
‘
.
.
1 Another object of ‘my invention is to provide
a centrifugal form of blowing.‘ apparatus into
which grain or similar ‘substances in a dry state
may be fed continuously which discharges it into
a conduitwith a proportionally seleotedrquan¢
tity of air with an initial force su?icient to cause
it to travel, verticalaand lateral distances in ex
15
'4 and opening into the casing. At a point some
what removed .from the casing the inlet has an
opening in, its upperside and extending there
from/and ?aring outwardly ‘is a receiving fun;
nel 13, which forms a restricted discharge spout
through: which grain or similar material passes
into'_ the ‘inlet [2. The latter, directly below said
spout, has an axially disposed opening for the
introduction of air. ' Itis slightly ‘less in diam
eter than that of‘ the spout and as a structural
penditure of power greatly in excess of that which
feature
I surround it with a collar l4.
my apparatus requires.
Attached to the center of the impeller and ex
To these and other ends my invention comprises 25
tending through the inlet [2 and for a distance
further improvements and arrangement of parts
into the collar I4 is a rotary member l5, shaped
all as will be fully explained in the following
hexagonally,
or otherwise formed with a plu
speci?cation, the novel features thereof being set
rality of blades, against which material passing
forth in the appended claims.
30 from 'the feed spout l3 impinges so that it is
In the drawing:
.
broken up or separated and distributed evenly
Fig. 1 is a longitudinal sectional view of a
in the air stream which is drawn into the inlet.
centrifugal blower illustrating one adaptation
The impeller comprises the disc 4 which lies in
of my present invention.
close proximity to the side of the casing l away
Fig. 2 is a cross sectional view showing a face
view of the impeller, taken on the line ‘Zr-2a: of 35 from the opening of inlet l2. On its face the disc
cess of those heretofore reached with an ex
Fig. 1.
'
has a number of ribs forming a series of chan
nels a, b, c, d, e, 1‘ the arrangement and construc
tion of which are important, and as they are
ures indicate similar parts.
similar a description of one will sui?ce for all.
My conception which has resulted in a very sat
isfactory type of blower for handling desiccated 40 In the drawing these channels are shown as
being formed between the faces of opposing angle
material resides in the creation of suitable appa
irons riveted to the disc and of such height that
ratus for mixing air and granular substances ini
the two sides of the impeller have an operating
tially and handling this mixture in such a Way
clearance in the casing. The inner ends of the
that I simultaneously increase the pressure and
consequent ?uidity thereof up to the moment of 45 channels lie just within the circumference of the
inlet l2, as indicated by the dotted circle in Fig. 2.
its discharge, from a high velocity rotary mem
They do not connect with each other, however,
ber, into a conduit’ leading to the bin or other re-.
one
wall of each, as indicated at l6, serving to
ceptacle located at a remote point.
separate it from the next channel of the series.
In carrying out my invention I provide an ap
paratus comprising a narrow casing I, substan 50 I deem this arrangement desirable as it assures
Similar reference characters in the several fig
tially circular in exterior appearance the inner
surface 2‘ of which is a volute curve leading to a
discharge nozzle 3 which marks the point of at‘
the independent action of the channels. It will
be noticed that the channels instead of being ra
dially disposed are substantially each one half of
a chord of the circular disc 4, said half falling on
tachment of a conduit (not shown) which it is
to be understood may lead in any direction, 55 its trailing side.
Another important feature in
2,408,675
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the channels’ construction lies in the fact that
they taper outwardly. This is for the purpose of
concentrating the mixture of granular material
and air at the point of discharge during the rota
tion of the impeller.
5
In summarizing, the practice of the method I
T In a blower, the combination with a narrow‘
volute casing having a central opening for the in
troduction of air and granular material, of a 1'0
tary impeller journaled in the casing provided
with a plurality of separate independent channels
opening at their inner ends into the central open
employ for handling grain and like ?nely granu
ing and extending tangentially of the central
lated substances in conjunction with the de
opening, said channels being tapered toward their
scribed apparatus; I wish to point. outrthe, fol-1
outer.» extremities.
.
lowing. The: bladed" rotary elementin the, center 10
3. In, ablower,‘ the combination with a casing
of the inlet imparts an initial rotary movement
having a lateral discharge passage and provided
and a mixture of air and grain at their point of’
with a central inlet for the reception of air and
introduction to the impeller which eliminates ’ granular material, and a rotary device for mixing
what I call breakage of the grain; i. e‘. anyhesi-w
said elements before their entry into the casing, of
tancy of the grain to take up the rotary move
a rotary impeller in the casing having independ
entnon-communicating passages leading tangen
ment of the impeller and consequently prevents.
any tendency to clog the inner ends of its chan
tially from said inlet to its periphery which are
nels. Having avoided this di?icultyI prevent any " graduated-in width from their inner ends out
wardly to their point of discharge.
tendency of the air at the center of the wheel?
from tending to separate from the apportioned 20 4'.‘ In a blower, the combination with a volute
quantity of grain, hence the pressure caused by
casing having a lateral discharge opening and a
the. weight of, the grain as it gathers tangential
centralv intake opening, ‘and a- laterally‘ extending
air and granularmaterial mixing chamber em
velocity increases as it moves outwardly in each
passage or channel and is discharged‘ there
bracing the intake, of a. rotary‘ impeller in the
from with great velocity with the result that there 2.5 casing,‘ a: mixing member rotating’ with the im
is a'constant uniformv mixture of‘ air and‘ grain
peller‘ lying in- said- chamber, said impeller hav
?owing continuously into, the delivery pipe or
ing independent non communicating channels
conduit. I have determined in practice that the
located tangentially’ of the central opening» and
mixture discharged by the impeller enters the
arranged’ to receive separately at their inner
discharge conduit. at a pressure severalv times that 30 ends- a mixed stream of air and granular mate
Y rial from the‘ mixing member.
5. Ina blower, the combination wit-h av narrow
volute casing having an; intake at one side for a
mixture- of air and granular material, of an air
I claim;
'
35 impeller journaled in the casing comprising a
disc, pairs of spaced ribs» on the face of the disc
1. In a blower, the combination with. a casing
of'the air alone and is, in proportion to, the speci?c
gravity of the mixture and that it does not sepa
rate, until entering a. distant bin or is passed
through a special separator, for venting the air.
having a laterally located discharge opening and
disposed to’ form channels tapering from points
a. combined inlet for air and granular material
tangential‘ to the casing intake to the periphery
of the disc, each of said channels being closed
off‘ at its inner end from'the other channels.
opening into its center, of arotary impeller pro
Vided with a plurality of channels extending in
wardly from its periphery having their open in
ner ends located. opposite said inlet and each
closed. off from the. channelsv at its inner ends.
40
ORLO CLAIR NORTON.
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