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Патент USA US2115326

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April 26, 1938. - _'
w. s. BOWEN
- 2,115,326
DUST coLLEcToR
Filed Dec. 2, 1956
INVENTOR.
[lf/lian: ,I_laezwϧowel'l, '
BY
_ „1511,71 W10,
__ lÍÍ/S ATTORNEYS
Patented Apr. 26,
. ~. .2,115,326 _'
UNITED STATES >1>.1i'r-1-:_1~1'r OFFICE.; .
aussi# '
nus'r common
william speneer sem weefsels, N. J. _
„Spangen nee'embeg z, ms, sei-m No. nanas '
s ordm. (ci. 1ss"-.so)
_
A further object of the invention is to provide
The present invention relates to devices for
separating bodies of different weights yfrom Vone an impròved form of separating mechanism em- '
bodying the venturi principleA in controlling the
another and embodies. more speciñcally, an im
proved form of mechanism for separating and flow of the medium upon which a separating ac
collecting dust from air. As distinguished from ~tion _is taking place
A further object 'of the invention is to provide ‘
_various forms of mechanism now available. the
present invention utilizes a _straight or uni-dl ` an improved collecting mechanism bymeans of
rectional ilow rather than a reversal or'non-uni
which collection of material which has been sepa
directional ñow, which'is characteristic of ex-_ rated by means of a uni-directional separating
10' isting devices. In eifecting a separating action mechanism is facilitated.
'
'1°
v. upon thesubstance'which is subjected to the uni
A further object of the invention is to provide .
_an improved separating and collecting mecha
directional ilow, the present invention contem
plates subjecting the bodies to a rapidly whirling
motion and directing them through a Venturi'
15 mechanism, the venturi being formed with a
slot in its throat portion to eflect the separation
.nism by means of which one medium may be _ '
separated from another having a dißerent speciilc
weight in such fashion as. to preserve conditions 15 '
in the'collecting mechanism which improve the -
_ of the heavier body from the'lighter one. Inas
operation> of the separating mechanism. This
l much as the substance is directed in an axial di
aspect of the invention is attained by means
of the provision of a collecting chamber wherein
rection through the venturi. and while moving
axially is at the same time rapidly whirling `about
such axis, the heavier particlesv are directed out
wardly and away from the _axis of whirl, the
a partial vacuum is maintained, such vacuum
being produced by the flow of the medium
through the uni-directional separating device.
lighter edium being displaced inwardly and ad
_ Further objects and advantages of the inven- _
jacent
tion will be apparent as it is’ described in con
e axis of whirl.
' -~
»
nection with the accompanying drawing, where- 25V y.
Since all Venturi mechanisms include a con
verging portion, the velocity of the' whirling me
in.
.
,
Figure 1 is a plan view of aseparating mecha»
'nism constructed in accordance with the present
_ dium is greatly increased which, translated into
`terms -of centrifugal force, means that the cen
_trii'ugal force is even more greatly increased be
' - invention.
i go'cause it varies as the square of the velocity of
Figure 2 is a' view showing. a modiiìed form of 30
the medium. As a result, when the substance' such mechanism wherein a collecting chamber is
provided which is sealed from the atmosphere.
reaches the throat portion of the venturi, the
heavier particles are maintained closely adjacent
Figure 3v is a view in'end elevation showing a
separating andl collecting mechanism constructed
the walls of the device and are eilfectively sepa
_ 35 rated from the -lighter fluid body by -means. of a
in accordance with the present invention.
thin skimming slot, thus enabling highly emcient
separation to be carried out.
_
'
'
»
_
The ’present application is a continuation in
~
- 35
Figure 4 is a view in side elevation >of the mech
part ofapplicant’s co-pending .application Serial
40 No. 609,379, ñled May. 5, 1932 for “Dust collector"
_anism shown in Figure 3.
Figure 5 is a plan view of the device shown in
Figures-Sandi“
__
_
.
_ Referring to the above- drawing, anintake tube 40
and which matured inte Pac. No; 2.1182242, June _ il .(Figure l) receives a medium from a desired
The separating device is disclosed in ' source and subjects the same to a whirling mo
applicant’sjabove identiñed oo-pending applica
tion by means of vanes il. From the tube 'Il and
_„ tion. Thepresent application relates in addition vanes Il, the medium ilows into a conical con->
verging _portion li2 which terminates-in a cylin--v 45 ’
'45 to collecting mechanisms, and includes the here
_ 1,'1937.
inafter speci?cally described apparatus, not drical portion i3 and an outwardly i‘iaring skirt _
' shown or described in applicant's above identiiied i4. Axially disposed withrespect to the intake _
co-pending application, by means- 'of which col Átube I0 is an exhaust 'tube which- may be formed
lection is i'acilitatede.
'
*
'_ 50. _An object of the invention,- accordingly,_'is to
providea separating mechanism by means of
'I l' . >which heavier bodies may be separated from a
-
lighter medium in a highly emcient manner and
with- the >minimum’amount-of disturbance to the
>5:5 medium.
with a squared end I5 and an elongated Vtapering Í' -
tubular portion I6 having an inlet end I1 which 5o
is received within the skirt Il and is of a diameter
`less than that of the-cylindrical portion 4|310! the
tube i0; «A desired -overlap of the skirt and intake
_end i'l` ofthe tubular portion Itis provided, an‘
annular slot indicated at il thus being provided l5
2
2,1 lasso
between the cylindrical portion I2 andthe inlet
livered through ducts 36 to a common discharge `
end l1. It will,thus be seen that the above de
valve 31 which supplies the medium',I to a conveyor
scribed mechanism, shownin vlil‘lgure l, provides
38. . Cyclone outlets 3| may also supply the re
a -Venturi'mechanism,-whereby the i‘low of iiuid
turned heavy particles to the conveyor 38 through
therethrough is uni-directional and .follows the
similar valves 31.-
law which governs the ñow of iiuid through the
While the invention has been described in con-_
nection with the speciñc structure shown in the
venturis. Inasmuch as the whirling of the en
tering iluid is enormously increased by the con
verging portion l2, the slot il may be relatively
10 narrow and still effectively skim oi! the heavier
particles from the lighter medium which ñows4 out
through the extremity I5 andl is restored to _its
original pressure and1velocity state by the ex
panding. portion Ii of the venturis. This mech
anism is shown and described in applicant’s co
_ pending Aapplication above identiiled.v
.
5
accompanying drawing, it is not to be limitedlv
save as-detlned in the appended claims.
-
1. A separating and collecting device compris
fs,
ing an inlet chamber having a converging por-l
tion forming a venturi, an outlet chamber form
ing the expansion chamber of the venturi and
having an inlet portion adjacent and of lesser 16
diameter than `said' l converging. portion thereby
In the construction shown in Figure 2, the con ' forming an opening between saidconverging and ~.
verging Venturi inlet portion |2 terminates in a inlet portions, a hopper communicating with said
collecting chamber I9 having an outlet valve 20 converging portion4 through said opening, only,
formed at the bottom thereof in order that the and means for sealing .the hopper from com
interior of the chamber may be enclosed and munication with the atmosphere to maintain a
reduced pressure inthe hopper.
.not subject to atmospheric pressure. The Ven
2. A separating and collecting device compris
turi outlet-tube I6 is received within the cham
ber I9 and the inlet end -I'I thereof spaced ad '_ ing an inlet chamber having a converging oute
jacent the outlet oi the converging portion i2 let portion, a coaxial _outlet chamber havinga
in order that the annular slot il may be formed tapered inlet portion of smaller diameter than »v
between these elements. In the drawing, this the outlet portion of .said inlet chamber, deiining
- annular slot is shown as being much larger than an opening between the outlet and inlet portions,
and a' collecting hopper communicating with said
it _isin actual practice in order that the inven
30 tion may be understood more readily.l Since the outlet portion through said opening, only, and
chamber Isis an eii'ective enclosure,.the ñow of _ means for sealing hopper from the atmosphere
to maintain a reduced pressure in the hopper;
the medium. through the Venturi device main
. tains a' partial vacuum'within this chamber and
facilitates separation of the heavier body from
35 the lighter one. This condition exists by reason
let portion, a coaxial outlet chamber having a
of the fact that _the heavier bodies move into
tapering inlet portion adjacent to, in alignment
the region 'of low
with and of lesser diameter than said outlet por
within the chamber i9
more readily than they would move into a region
of higher pressure.
40
3. A separating and collecting device compris- ,
ing an inlet chamber having aconverging out
'
-In the construction shown in Figures 3, 4, and
5,- ñuid is introduced into the mechanism through
a conduit 2l which terminates in oppositely ex
tending scrolls 22 andl 22 which impart a whirl
ing motion to the two iluid .streams thus formed.
'I'he scrolls 22 and 23 discharge themedium into
converging Venturi portions 24 and 25 respec
tively. Venturi outlet portions _2l and 21Acarry
the lighter medium away and» deliver it tore
ceiving scrolls 2l and 29, respectively, which'may
50 »be in the iormof cyclone collectors which are
tion whereby'an -opening -is formed between said
outlet and inlet portions. a collecting hopper
communicating with said-.outlet portion through
said opening, only, and a valve for sealing the
hopper imm the atmosphere.
.
‘
_
4. A separating and collecting device compris
ing an inlet chamber having a tapering venturi
portion, an outlet chamber having a tapering in
let of lesser diameter than said Venturi portion
aligned with and spaced from said Venturi por
tion whereby an opening is formed between said '
venturi portion and, said inlet. portion, a col
now well- known in the art, These cyclone col
lectors may discharge the lighter, medium
through- a discharge manifold 2l and return
lecting hopper communicating with said Venturi
portion through saidl opening, only, and a valve
for sealing the hopper against communication
with the atmosphere to maintain a. reduced pres
' heavier medium. which has escaped the initial
55 separating stage by means of cyclone outlets 3|.
_ A 5. A separating device comprising’ an inlet
sure in the hopper.A
-
' '
_
chamber having a. converging portion, an outlet
chamber having a tapered inlet portion adjacent
_» and 25 and the diverging Venturi. outlet portions .i to and .ln 'alignment with said converging’por
26 and 21 is effected by means a annular slots tion, said inlet portion being' of less diameter
'32 and It in the respective ven _ _ _. These slots jthan said converging portion and denning an
Y The initial separating action whichtakes place
between the converging Venturi inlet portions 24
annular opening therebetween, a collecting hopper ciimmunicating with said converging portion
ures land 2 andcause the’heavier particles to. through said annular opening, only, and'means
are formed'in the same mannergjf" ¿described in
conection with‘theconstruction‘fshown in Fig
be skimmed oil' and received within collecting i'or sealing the hopper from communication with
chambers I4 and ll, respectively. From the "the atmosphere.
_collecting chambers, the heavier bodiesare den
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