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Патент USA US2131302

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slept. 27', 1938.
Filed April 15, 1936
0770 C. S/EZLE
IBY% m
Patented Sept. 21, 1938
Otto G. Selle, Denver, 0010.
Application April-‘41.3, 1936, Serial No. 74,083
2 ‘Claims’. (01. 103-89)
My invention relates to rotary pumps, and it
outwardly therefrom and having interior threads
is a primary object of the invention to provide
as indicated .at I3 for connection with a pipe or
a mechanism in which a given volume of dis-
conduit (not shown).
placed ?uid will be moved from an inlet and
5 expelled through an outlet in one complete revolution of the ?uid.
Another object of the invention is the provision
of machined co-acting housing and runner surfaces to provide a substantially ?uid-tight zone
10 whose only entrance is the'inlet of the housing
When the cover 8 is in place on housing. 4, the
outlet-and-inlet openings are in vertical aline- i5
A shaft l4 extends through cover 8, and carries
at its end within the chamber 4a of housing 4,
a rotor or pump-runner 15.
A suitable stuffing
and whose only outlet is the housing outlet.
shaft l4.
A further object of the invention resides in
the provision of a rotary pump which is simple,
The runner I5 comprises a hub l5a provided
with ‘a reduced extension I5b which holds the
durable and efficient.
end of the shaft l4 and extends into bearing 6,
Still another object of the invention is the provision of means cooperating with the pump runner to accelerate the movement of material between the inlet andthe runner.
~ .
A still further object, of the invention is to
20 provide a sealed passage for ?uid between the
inlet and the outletin order to prevent any ap-
preciable movement of ?uid, other than a progres-
box I6 may be provided to prevent leakage around 10
and a plurality of radially ranging diagonally 1‘
slanting vanes I50 are carried on the hub for
acting on ?uent material in the pump.
. .A set screw "5a or othersuitable means may
be provided for holding the runner against rela
tive movement-on shaft l4 within the housing 4. 20
The bearing. 6 de?nes an annular passage l'l
for material admitted through the inlet 5, and
sive movement from inlet .to outlet.
a wall or partition l8 extends across the passage
Other objects reside in novel details of con- at an inclination from oneside 'of inlet 5 and
25 struction and in novel combinations and arran'ge- _ over thesame to the plane of the upper end of 25
ments of parts as will more fully appear in the
course of the following description.‘
‘ -
To promote a better understanding ofthe invention, reference will now be made to the ac-
30 companying drawing in the several views of which
bearing 6, at the bottom of the rotor-chamber 4a.
The partition thus acts as a hood for the inlet
5 to prevent return of material thereto, as well
as‘ directing displaced ?uid through the passage
H. The, ?uent matter upon reaching the inclined 30
like parts have been similarly designated, and in
surface of partition I8 in its circulatory’ course,
is thrust laterally by contact therewith, into the
Figure 1 represents a side elevation, partially
sphere of in?uence of the runner l5 within the
in section, of apparatus embodying the present
35 invention,
Figure 2 is a side elevation shown partially in
chamber 4a.
The shaft I4 is driven by any suitable means 35
and in Figure 1 is illustrated as carrying a pulley
section in the approximate position of the line
2-2, Figure 1, and
Figure 3 is a section taken along the line 3—3,
4‘) Figure 1.
l9 driven by a belt 20 attached to a suitable
driving element (not shown).
Intermediate the pulley l9 and the pump hous
as comprising a housing 4, preferably of cylindrical shape, having an inlet 5‘in its bottom. A
cylindrical bearing, 6 extends upwardly from the
‘15 bottom of housing 4 and terminates at the bottom of a chamber 4a in the upper portion of the
housing, in which the pump-rotor operates.
The housing 4 is flanged as indicated at ‘I, and
for the shaft, and containing a lubricant cham
ber. Suitable lubricant is periodically introduced
into this chamber through one or more valves 23.
Packing glands 34 may be provided as needed to 45
prevent escape of the lubricant along shaft I4.
The bearings 22 are contained in screw-caps He
at opposite ends of the housing 2| and the lower
most cap is formed integral with the cover plate
8 by means of legs 2|a.
The operation of the above described pump
contemplates movement of a given quantity of
?uid inducted through inlet 5, completely through
passage I1 and into outlet [2 in one, complete
ing 4, the shaft I4 is encased in a housing 2| 40
In the drawing, the pump has been illustrated ' provided at both'ends with suitable bearings 22
a cover plate 8 is ?tted on the ?anged end ‘I of
5‘) the housing and held against relative movement
thereon by suitable fastening means, such as
screws 9, while a gasket II] is held between housing 4 and cover 8 to prevent leakage.
The outlet of the pump is provided in cover
55 plate 8 in alinement with a nipple [2 extending
To this end, the upper end of bearing 6 and the
adjoining surface 18a of partition l8 are ma
chined to provide an even surface over which the
vanes I50 and the hub I5a rotate. The lower
edges l5d of the vanes and the hub are likewise
machined and thereby disposed in ?uid-tight con
tact with the end-surfaces of the relatively sta
tionary bearing 6 and partition I8.
The inner surface of cover plate 8 is recessed
10 as shown at 24, and on the side of outlet I2 for
ward with respect to the direction of rotation,
I‘! to the upper end of partition l8, the suction
effect produced by rotation of the rotor is con
centrated in this zone.
By combining the increased suction action with
the acceleration due to the decreasing area of 5
the passage, the material admitted through inlet
5 reaches the spherevof action of blades I50 in a
relatively brief interval and thereafter is re-‘'‘
jected in substantially one-quarter revolution of \
runner l5.
From the» foregoing, it is apparent that the
mechanism is simple and durable and will effect
the plate 8 has a downward projection 25 extend
ing across the top of the annular chamber 42. _ an ei?cient pumping with a relatively low power
The surface of the projection 25 is also ma
In order to maintain a ?uid-tight contact be 15
15 chined and the upper edges l5c of vanes l5 are ~
likewise machined to contact with the projection tween'the upper and lower surfaces of the runner,
in ?uid-tight relation thereto.
and the machined faces of the bearing 6, the par
It will be readily understood that the housing
4 may be provided with legs or other supporting
20 elements if it is to be used for vertical pumping,
and placed in a sump or other ?uid containing
tition 18a and the projection 25, the thickness
of the gasket l0 may be varied and/or the posi
tion of the runner on the shaft may be adjusted 20
by loosening the setescrew Ilia.
chamber. vIt ‘is also evident that a suitable con
duit may lead from the inlet into a supply of the
Changes and modi?cations may be availed of
within the spirit and scope’ of the invention as
?uid to be pumped.
de?ned in the hereunto appended claims.
What 1 claim and desire to secure by Letters
In order to accelerate the movement of enter- 7
ing ?uids, the passage ll progressively narrows
from inlet 5 to the top of partition l8.
Patent is:
housing having an axial ‘inlet at one end and an
Inoperation, rotation of runner‘ I 5 draws ?uent
matter through inlet 5 into passage I‘! by suc
30 tion, and the narrowing volume of the passage
causes a progressive increase in velocity..
ixWhen the displaced ?uid strikes the. partition
l8 it_ is thrust upwardly into the sphere ofin?u
ence of vanes I50 of the rotor within the chamber
135 4a.. A measured quantity is carried. forward by
each vane due to the slicing action resulting from
the passage-of such vane over the surface l8a
of‘ partition I8, and is elevated at the same time,
due to the diagonally slanting shape. of the vane.
40 . -At the same instant the ?uid is elevated, the
upper edge of the blade next forward with rela
tion to the direction of rotation contacts the
machined surface of projection 25' and as none
of the elevated ?uid is free to escape in a for
45 ward. direction, it, consequently, passes directly
into outletv I2.
Another-bene?t derived'from the sealed zone 0
rotation of runner I5, is the increase in suction
derived. As practically no ?uid can reach the
runner. other than by traveling through passage
1. A rotary pump comprising a cylindrical
axial outlet at. its opposite». end, a vaned propeller
?tted into the housing adjacent the outlet, an
annular inlet chamber in the housing between
the inlet and the propeller, and a radial parti
tionextending helically across said- inlet cham
ber from the inlet end'thereof to the propeller
and being, inclined in a direction opposite to the
inclination of the propeller vanes, said partition
beginning. in the inlet end of the housing at one
side of the inletand extending across the inlet
to its end adjacent the propeller.
2. A rotary pump comprising a cylindrical 46
housing having an inlet and an outlet in axial
alinement, a- vaned propeller positioned in the
housing adjacent the outlet, an annular inlet
chamber in the housing between the inlet port
and the propeller and axially open to the pro 45
peller, and a helical partition in the chamber
preventing direct axial ?ow between the inlet and
the outlet and inclined in the direction of rota
tion of the propeller.
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