close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3076421

код для вставки
' Feb. 5, 1963
P. GUILLORY, SR
3,076,411
MULTI-STAGE CENTRIFYUGAL PUMP
Filed June 10, 1960
2 Sheets-Sheet 1
INVENTOR.
PAUL
GUILLORY, Sr.
ATTORNEYS
. Feb. 5, 1963’
P. GUILLORY, sR
“ 3,076,411?"
MULTI-STAGE CENTRIFUGAL PUMP
Filed June 10, 1960
a?
\
§‘
\
/§%/ /
>
- Y
I
‘
2 Sheets-Sheet 2
é
"
Ill
‘l
1
33b
‘111-1
INVENTOR.
>PAUL
GUILLORY, Sr.
ATTORNEYS
V
United States Patent 0
3,076,411
2
1
3,076,411
,
Patented Feb. 5, 1963
'
'
multi-s‘tage to an extent greater'than two stages, each
stage being'indi‘cated It). In addition to each single stage
section Iii, it includes a suction intake section 11 and a
‘
MULTl-STAGE CENTRIFUGAL PUM
Paul Guillory, Era, Box 455, Vernal, Utah
pressure discharge section 12.
Filed June Ill, 1960, Ser. No. 35,234
12 Claims. (Cl. 103-102)
an open-ended housing unit 13 and an impeller unit 14,
the several housing and impeller units of the multiple
pumping stages being positioned end to end and the ter
minal units being positioned in end to end relationship
This invention relates to centrifugal pumps and is par
‘ticularly concerned with those having multiple stages, al
though certain features of the invention are applicable to
centrifugal pumps of single stage.
7
Each of the single stage pump sections 19 comprises
,
10 with the suction intake section 11 and the pressure dis~
'
charge section 12, respectively.
As heretofore constructed, multi-stage centrifugal
The several housing units 13 and intake and discharge
sections are tightly secured and sealed together in any
pumps cannot be easily altered, to add to or to reduce the
number of pumping stages originally provided. Thus,
suitable manner, as by means of cap screws 15 and inter
when conditions change on any given pumping job, it is
ordinarily necessary to replace the existing'pump or to 15 posed sealing material. It is a feature of the invention
that O-rings 16 are employed as seai .
operate ine?iciently. For example, where an increase in
The several impeller units 14 are detachably joined in
discharge pressure is required, it is ordinarily necessary
to replace an existing single or multi-stage pump with a
end to end relationship, and, for this purpose, are each
‘pump having one or more additional stages.
advantageously provided with an externally threaded stud
'
‘I An object of the invention is to provide a centrifugal 20 17 at one end and with an internally threaded recess 13
at its opposite end adapted to receive the stud 1'7 of the
pump that may be easily altered to supply additional
immediately adjacent impeller unit in screw mating rela
pumping stages or to reduce the number of existing stages.
tionship.
,
Other objects are to provide such a pump that will
Stub shafts 19 and 2t) connect with opposite ends, re
operate with greater efficiency than comparable centrifugal
pumps of conventional type, that is sealed in a peculiarly 25 spectively, of the rectilinearly aligned and joined im
peller units 14 to complete a composite drive shaft for
effective manner against loss of pressure and the liquid
the pump.
being pumped, that enables the adding or subtracting of
Stub‘shaft 19 has a journal portion 190, which is re
pumping stages without damaging the seals between indi
. ceived by anti-friction bearings 21 in intake section 11.
vidual stages, that minimizes the tendency for leakage
about the drive shaft, that is simple in construction, and 30 Such stub shaft has its inner end 1%, FIG. 5, externally
threaded to correspond to a stub 17, and is detachably
that is easily maintained in good repair.
joinedthereby to the recessed and internally threaded
An important feature of the invention which affords
end 18 of the impeller unit of the appropriate terminal
easy addition to or reduction in pumping stages is the pro
pumping section 10. Its outer end 190 projects from the
peller units ‘detachably secured together in end to end, 35 intake ‘section 11 to serve as meansfor applying power
vision of a composite drive shaft made up, in part, of im
to the composite drive shaft. As such, it is provided 'with
axial alignment as sections of the complete drive shaft‘ and
the provision of corresponding, pump housing or casing
units also detachably secured together in end to end, axial
alignment as sections of the complete pump housing or
casing.
i
1
‘
a keyway 22, FIG.'4, for securing thereto a-pulley (not
shown), which is belted to any suitable prime mover, such
as an electric motor (not shown). A seal 23 prevents
40 leakage of air into the ‘pump at this suction end thereof.
Other features contributing to the achievement of one
or more of the foregoing objects are the provision of ’
.O-ring seals between the individual housing units; the
particular formation of the impeller units, including a
streamlined head‘portion backed by a vane portionfor
each unit; the particular‘ internal formation of each hous
ing unit,.which conforms to the streamlined contouring
of the impeller unit and provides gently curved, smooth~
ln'instances Where only one or two pumping stages are
utilized, it will be sufficient to support the drive shaft only
at this intake end, the stub shaft in not being necessary.
In such instances it will be Wise, of course, to space the
bearings 21 as widely as is reasonably possible.
In this illustrated instance, stub shaft 20 in conjunction
with stub shaft 19 gives ‘adequate bearing support for
‘any required number of pumping stages within reason.
It has a journal portion 20a, FIG. 4, which is received
\walled, ?ow passages for pressure liquid passing to a 50
‘by an anti-friction bearing 24 mounted in a closed recess
successive pumping stage or to discharge; and the need for
portion 12a of discharge section 12. Its opposite‘ end
shaft ‘sealing only ‘at the suction intake, i.e. low pressure,
291) is recessed and internally threaded to correspond with
‘ '
the end 18 of an impeller unit 14, and receives the stud
Further objects and features of the invention will be
pointed out in connection with the detailed description 55 end 17 of the impeller unit of the other terminal pumping
section 10. A seal 25 is utilized to protect bearing 24
of the speci?c embodiment shown in the drawings, which
from the force of the material being handled by the pump.
represents what is presently regarded as the best mode
vSince stub shaft 20 terminates within the discharge sec
of carrying out the invention in practice.
tion ‘12, the latter may be‘completely closed so as to
In the drawings:
H6. 1 is a view in side elevation of a multi-stage‘ 60 present no difficult sealing problem at this pressure end
of the pump.
pump of the invention, intermediate stages being broken
It is afeature of the invention that each impeller unit
out for convenience of illustration;
14 and corresponding housing unit 13 are formed in
FIG. 2, ancnd elevation looking from the leftin
ternally to facilitate smooth, non-turbulent flow from
FIG. 1;
'
pumping section to pumping section. To this end, each
FIG. 3, a vertical section taken on the line 3—-3 of 65 impeller unit 14 comprises a substantially bullet-nosed
FIG. 1;
head portion 14a backed by a vane portion 14b, and each
FIG. 4, a horizontal section taken on the line 4—4 of
housing unit 13 is internally contoured at 13a to substan
end of the pump.
tially conform to the contour of the impeller unit and to
FIG. 5, a fragmentary vertical section taken on the line
provide therewith a gently curved, smooth Walled, annu
70 lar flow passage 26- leading from the Vane or intake end
5-5 of FIG. 4 and drawn to an enlarged scale.
‘ FIG. 1; and
Referring to the drawings:
.
'
In the form illustrated, the pump of the invention is
of the housing in the discharge ori?ce 27 thereof at the
head end of the impeller.
‘
'
3,076,411
3
Each of these unusually contoured impeller units 14
4
' tions, respectively; and means for applying power to said
is advantageously fabricated in two concentric parts 14-1
composite drive shaft.
and 14-2 ‘which are separable one from the other. Part
2. A pump as set forth in claim 1, wherein each im<
peller is provided with a threaded stud at one end and a
correspondingly threaded recess at its opposite end as the
14-1 forms a broad base for bullet-nosed head portion
14a of the impeller unit, while part 14-2 forms the con
vergent nose of such head portion 14a. Such parts are
said means for joining the impellers of the respective
normally secured tightly together, as shown. To this end,
single stage sections.
base part 14-1 has a central stud 28, FIG. 5, extending
3. A pump as set forth in claim 2, wherein one of said
forwardly therefrom and nose part 14-2 is provided with
stub shafts is provided with an externally threaded end
a central opening 29 for receiving such stud, the latter 10 for screwing into the recess of one of said terminal im
extending therethrough and having means provided on
pellers, and the other of said stub shafts is provided with
its projecting end for securing the two parts tightly to
a recessed and internally threaded end for receiving the
gether.
threaded stud of the other of said terminal impellers.
In this illustrated construction, the externally threaded
4. A pump as set forth in claim 1, wherein the stub
stud 17 by which adjacent impellers are joined together
shaft at the suction end of the pump projects through and
constitutes the tip of the stud 28, and the means for secur
beyond the said intake section; sealing means is provided
ing the two parts of an impeller together comprises exter'
against the inflow of air about said stub shaft; and the
nal threading 28a on stud 28, immediately back of the
means for applying power to the composite drive shaft
threaded tip 17, and a nut 30 cinching part 14-1 tightly
is carried by the projecting end of said stub shaft.
against part 14-2. Also, the recessed and internally 20
5. A pump as set forth in claim 4, wherein the stub
threaded end 18 of an impeller, which engages in screw
‘shaft at the pressure end of the pump terminates within
mating relationship with the stud 17 of a next adjacent
impeller, constitutes the free end of a central stud 31
said discharge section of the pump.
6. A pump as set forth in claim 5, wherein the hous
projecting backwardly from base part 14-1 of the im
ings of the single stage sections are joined in end to end
peller.
25 abutting relationship; and wherein O-ring seals are inter
The stud 31 merges with base 14-1 in a gently curved,
posed between adjoining ends, respectively, of said hous~
outwardly extending ?llet 31a, which serves to smoothly
ings.
turn the material being pumped outwardly of the axis of
7. A pump as set forth in claim 1, wherein the housings
the impeller.
of the single stage sections are joined in end to end abut
Vanes 1412, FIG. 3, may be provided in any number
ting relationship; and wherein O-ring seals are interposed
found suitable for particular pumping purposes. They
between adjoining ends, respectively, of said housings.
are advantageously formed as an integral part of impeller
8. A pump as set forth in claim 1, wherein each im
base part 14-l.
peller housing is internally contoured to substantially con
Intake section 11 has an intake passage 32 extending
form to the contour of its impeller and to provide there
therethrough from a threaded end 32a, adapted to receive 35 with a gently curved, smooth walled, ?ow passage con
a suction intake line (not shown), to a discharge ori?ce
verging from vane end to head end of the particular sin
32b corresponding to the discharge ori?ce 27 of a pump
gle stage section concerned.
ing section 10. Similarly, discharge section 12 has a dis
9. A pump as set forth in claim 1, wherein the tip por
charge passage 33 extending therethrough from an ori?ce
tion of said projecting end of the stud is externally
330, corresponding to the discharge ori?ce 27 of a pump 40 threaded; and wherein the means detachably securing
ing section 10, to a threaded end 33b adapted to receive
one impeller to another comprises a central stud for
a pressure discharge line (not shown).
Both intake section 11 and discharge section 12 are
joined to their respective terminal pumping sections 10
each impeller projecting backwardly from said broad base
Whereas there is here illustrated and described a certain
10. A pump as set forth in claim 1, wherein the means
and having its terminal end recessed and internally
threaded for the reception of the externally threaded end
by means of cap screws 15 and are sealed to such ter 45 of the forwardly projecting stud of the next adjacent im
peller.
minal pumping sections by means of O-rings 16.
preferred construction which I presently regard as the best
for securing the two impeller parts tightly together com
mode of carrying out my invention, it should be under
prises a nut threaded on said forwardly extending stud
stood that various changes may be made Without depart~ 50 back of said threaded tip thereof.
ing from the inventive concepts particularly pointed out
11. In a centrifugal pump, an impeller formed in two
and distinctly claimed herebelow.
concentric parts which are separable one from the other,
I claim:
one of said parts being a broad base having a central stud
1. A multi-stage centrifugal pump, comprising a plu
projecting forwardly therefrom and having vanes project
rality of mutually separable, single stage sections detach 55 ing rearwardly therefrom, and the other of said parts
ably joined end to end, each section comprising an open
being a bullet-nosed head ?tting with'said one part and
ended housing and an impeller within the housing each
over said stud; means coacting with said stud to normally
impeller being formed in two concentric parts which are
secure the two parts tightly together; and an impeller
separable one from the other, one of said parts being a
housing internally contoured to substantially conform to
broad base having a central stud projecting forwardly 60 the contour of said impeller and to provide therewith a
therefrom and having vanes projecting rearwardly there
gently curved, smooth walled, ?ow passage converging
from, and the other of said parts being a bullet-nosed
from vane end to head end of said housing.
head ?tting with said one part and over said stud and hav
12. A centrifugal pump, comprising at least one single
ing an axial receiving opening into which said stud
stage section which includes an open-ended housing and
projects; means normally securing the two parts tightly 65 an impeller within the housing, said impeller being formed
together; means detachably joining the housings of re
in two concentric parts which are separable one from the
spective stage sections in end to end relationship; means
other, one of said parts being a broad base having a cen
detachably joining the impellers of respective stage sec
tral stud projecting forwardly therefrom and having vanes
tions in end to end relationship; a suction, intake section
projecting rearwardly therefrom, and the other of said
at one end of the pump; a pressure, discharge section at 70 parts being a bullet-nosed head ?tting with said one part
the other end of the pump; stub shafts secured to and ex
and over said stud; means coacting with said stud to nor
tending from the terminal impellers, respectively, at op
posite ends of the pump, to form with the several im
pellers a composite drive shaft for the pump; means jour
naling said stub shafts in said intake and discharge sec 75
mally secure the two parts tightly together; a suction, in
take section at one end of the pump leading into the vanes
of said impeller; a pressure, discharge section at the other
end of the pump; a stub shaft secured to and extending
3,076,411
5
from said impeller at the said one end of the pump into
and through said intake section; means journaling said
stub shaft in said intake section; and means for applying
power to said stub shaft.
6
1,555,635
1,721,825
2,001,172
2,366,964
2,387,377
Conant _____________ .. Sept. 29, 1925
Lipe _________________ __ July 23, 1929
Wintroath ____________ __ May 14, 1935
References Cited in the ?le of this patent
2,662,486
Howard _______________ __ Jan. 9, 1945
Wislicenus ____________ -_ Oct. 23, 1945
Hillger _______________ _.. ec. 15, 1953
UNITED STATES PATENTS
2,670,686
2,943,839
2,947,468
Berg _________________ .._ Mar. 2, 1954
Birmann ______________ __ July 5, 1960
Tryon _______________ __ Aug. 2, 1960
114,335
Germany _____________ -_ Oct. 18, 1900
776,711
854,012
1,207,546
1,510,107
Wilken ________________ _.. Dec. 6, 1904
Akimo? _____________ .. May 21, 1907 10
FOREIGN PATENTS
Hards ________________ __ Dec. 5, 1916
Rodriguez et a1. ______ __ Sept. 30, 1924
Документ
Категория
Без категории
Просмотров
0
Размер файла
557 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа