close

Вход

Забыли?

вход по аккаунту

?

Патент USA US3043514

код для вставки
July 10, 1962
R. GABBIONETA
3,043,497
MEANS FOR THE SUPPORT OF THE ROTOR IN LIQUID RING ROTARY PUMPS
2 Sheets-Sheet 1
Filed Dec. 13, 1960
3
_. \
\\
4
9
8
JJWF.
4K
l
July 10, 1962
R. GAB‘BIONETA
3,043,497
MEANS FOR THE SUPPORT OF THE ROTOR IN LIQUID RING ROTARY PUMPS
Filed Dec. 15, 1960
2 Sheets-Sheet 2
atent G ” ice
United States
3,M3,¢l9?
Patented July 10, 1962
2
1 .
Referring now to the drawings, the liquid ring rotary
pump comprises a body 3 with an inner wall having two
3,043,497
cylindrical surfaces which are eccentric with respect to
the axis of rotation.
MEANS ll?ii THE SUPPORT 0F THE RUTOR IN
LEQUID
RUTARY PUMPS
Roherto Gahhioneta, Via Gasparotto 4, Milan, Italy
Inside the body 3 a rotor 4 keyedonto the motor shaft
10 rotates. Also forming part of the pump are the ?xed
member 1 carrying the inlet 11 and the outlet 12 and a
conical distributor .2. Through the inside of this conical
distributor ‘2 runs a channel 5 wherein the liquid flows,
Filed Dec. 13, 196i), Ser. No. 75,495
Claims priority, application litaly Dec. 29, 1959
1 Claim. (Cl. 230-79)
The present invention relates to means for the support
10 which returns to join the ring inside the body 3. It is
of the rotor in liquid ring rotary pumps.
from this channel 5 that the liquid itself, which arrives
Rotary pumps of this kind designed for use in the
Eheire
at a certain pressure, passes into the inside of the
chemical industry, in which the rotor is mounted in sus
o y.
pension at the end of the driving shaft which is usually
As may easily be seen in the drawing referred to, a
carried by a double external support, are well known.
passage 6 branches from the channel 5 and, passing
This mode of construction which allows the shaft to
protrude from one side only, requires only one gland and
makes the inside of the machine more easily accessible;
said mode of construction, however, has one notable dis
through the conical distributor 2, extends to the rotor 4 at
which point the passage 6 widens out in such a manner
that it ‘faces up to a surface 7 of the rotor 4 itself, which
has a certain area.
advantage.
The weight of the rotor mounted at the end of the shaft
is, in fact, the cause of bending of the shaft itself, whereby
the rotation of the rotor takes place about an axis which.
is slightly eccentric with respect to the axis of the body
wherein the rotor itself is rotating.
This disadvantage makes it necessary to allow for more _
play between the movable and the ?xed portions and gives
rise to asymmetrical wear On the ?xed parts of the ma
chine, such as the distributor cone and the casing.
the conical distributor 2, which also originates from the
channel 5 and faces up to an area 9 of the actual rotor 4.
When the liquid has left the compression chamber to
gether with the compressed gas, it is separated therefrom
and then cooled, after which it returns to the inside of
'the body 3 to form again part of the revolving ring.
The last section of the circuit ‘before the entrance into
the body 3, is the vpassage 5 wherein the liquid flows at
a pressure not much less than that which it had at the
outlet 12 from the pump.
By reason of what has been said, the pressure of the
liquid is transmitted also to the surfaces 7 and 9 of the
In rotary pumps of the type referred to, part of the liquid
making up the revolving ring escapes during the working
of the pump together with the compressed gas; the liquid,
having been separated from the gas and cooled, is then
made to return to form part of the ring.
It is one object of the present invention to provide means
for the support of the rotor in liquid ring rotary pumps,
which eliminate the disadvantages referred to above.
It is another object of the present invention to provide
WI-Njml.
_
In a similar manner a second passage 8 is provided in
rotor 4 and is directed upwardly.
.
‘The size of the said surfaces “7 and § is such that the
total upward force acting on the rotor 4 contributes
considerably to the support thereof. In this way the
disadvantages described above which are present in known
pumps of the kind are eliminated.
While I have disclosed one embodiment of the pres
invention, it is to be understood that this embodiment
the rotor by exploiting the actual pressure of the liquid, 4:0 ent
is given by example only and not in a limiting sense,
as it returns to join the ring.
the scope of the present invention being determined by _
means for the support of t e rotor in liquid ring rotary
pumps, which includes a contribution to the support of
It is still another object of the present invention to pro
the objects and the claim.
vide means for the support of the rotor in liquid ring
I claim:
rotary pumps, wherein the liquid in the pump reaches the
In a rotary liquid ring pump,
chamber, wherein the rotor revolves, through a circuit 45
a body having an inner wall including two cylindrical
which includes a ?nal portion going axially through the
surfaces disposed eccentrically relative to the axis
distributor cone of the pump.
Now since the rotor surrounds part of the distributor,
of rotation of said pump,
a driving shaft extending into said body,
a rotor positioned within said inner wall keyed to said
one or more passages are provided according to the
present invention which emerge from the portion of the 50
circuit of the liquid which passes through the distributor,
and, passing through the material of the distributor itself,
arrive at a certain portion of the collars surrounding said
rotor.
It follows from this that, when the liquid has reached
a position of contact with an asymmetrical portion of the
and said rotor and de?ning an inlet, as well as an
55
rotor, it presses with a certain force on a surface thereof;
the positions of the passages which carry the liquid under
pressure into contact with the rotor, are such that the ,
mentioned force is directed upwardly so as to contribute
to the support of the rotor .
60
'
The pressure of the liquid depends on the working pres
sure of the pump and if it is su?iciently high it is possible,
with an appropriate extension of the surface of the rotor
imder pressure, to support a great part of the Weight of 65
the rotor and even to support the whole weight thereof.
With these and other objects in view, which will be
come apparent in the following detailed description, the
present invention will be clearly understood, in connec
tion with the accompanying drawings, in which:
FIG. 1 is an axial section of the pump; and
FIG. 2 is a section along the lines 2—2 of FIG. 1.
driving shaft and having a conical recess to form a
conical inner face,
a non-rotating member disposed adjacent said body
outlet,
a conical distributor disposed coaxially with said driv
ing shaft within said rotor and said non-rotating
member, said conical distributor defining an axially
disposed channel adapted to receive the return flow
of the liquid having a predetermined pressure, and
at least one vertical and radially disposed channel
extending from said axially disposed Channel up
wardly to the inner face of said rotor, whereby said
pressurized liquid tends to rbalance the force of
gravity on said rotor and contributes to the support
thereof.
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,195,174
2,195,375
Jennings ____________ __ Mar. 26, 1940
Adams ______________ __ Mar. 26, 1940
Документ
Категория
Без категории
Просмотров
0
Размер файла
257 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа