close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2408224

код для вставки
~ sept, 24, 12946.
2,408,223 "
H. G. NASH
ROTARY GATE VALVE
2 Sheets-Sheet l
Filed Dec. 17, 1945/
FEL-'6.1.
4
f
[Ö
' INVENTÓR
/ïfkßfßr GT /VASH
BY
-
ATTORN EYS
sept. 24, 1946.
' _
-H. G. NASH
»
ROTARY
GATE
2,408,223
VALVE
Filed Dçc.- 17, 1943
-
- ,
2 Sheets-Sheet 2
47
L
¿7 zag?
;
.f
4Z
.
`3.5
.
¿9
/5
“_
l
-
'
»
lNvENToR
y Hfs-Rafa? G AMS/f
BY
/Z ,L
Y
ATTORNEYS
.
2,408,223
Patented Sept. 24, 1946
UNITED STATES PATENT OFFICE
'
~
sacarmeÍ
ROTARY GAtl‘Itf-VALVEv
>Herbert G. Nash, Kew Garaensm. Y'.
Application December 17, 1943;,S'erial No: 514,626
2 Claims. (c1. 7er-22.).
1
structures and more specifically to a rotary gate
valve.
The primary object of the'invention resides-in
a rotary valve in which the rotary valve member
may be successively freed from its seat, rotated
from closed to open position or vice versa, and
subsequently reseatedupon its valve seat byl means
of a single continuous manipulation of the valve
y
actuating means.
Other novel features of the invention will be
come apparent as the following specification is
read in conjunction with the accompanying draw
ings, in which,
Figure 1 is a vertical sectional view of my
2
includes an annular tapered plug body 26 having
astra-ight tran'sversepassage 21extending there
through. The taper ofthe plug body 26 is com
This inventionrelates to improvements in valve
lo
plementaryto thatV of the valve seat I8 for seat
ingeengagement therewith. Depending from the
plug body 261axia1-ly thereof is a stud 28 which is
slidably and rotatably disposed in the bearing 22.
Rising upwardly from the valve body 26 centrally
and'V axially‘therefrornV is- a valve stem 29, the
same- freely'passing through the bearing open
ing 24-»« and an axiallyalinedbearing opening 3i)>
in the~bottom wall 3|! of a cylindrical casing 32,
which casing constitutes the upper portion of'the
bonnet I3. Theupper free end of the stem 29
extends'v intothe casing132.V and is provided with
lefty screw threads 33. A packing gland 34 car
ried byl the-plate 23 surrounds the stem 29 to
the;valve> member being illustrated in seated en
seal thebearing between said stem and plate.
gagement with its seat in full lines, and in freed
Interposed between the top of the bonnet I3..
relation thereto in dotted lines.
Figure 2 is a horizontal sectional view on the 20 and the capv IIIY is a bearing plate 35i having a
bearing opening-36 coaxial with the'stem 29 and
line 2-2 of Figure 1.
with a bearing opening 31 in the cap section I4.
Figure 3 is a vertical sectional view taken on
valve with the- parts in valve closingl position,
the line' 3-3 of Figure 2, with the parts of the
valve shown in open position, the valve member
ybeing shown seated in full lines and in raised
unseated position in dotted lines.
Figure4 is a horizontal sectional view'on the
Journalledin the bearing openings 31 and 36 is
an actuating stem 38 having a collar 39 disposed
between the capsection I4~and~bearing plate 35
and which forms a swivel connection between
the» stem» 38~ and cap section I4`forr reasons to be
hereinafter; explained. The lower or inner end
line 4-4 of Figure 3.
of the stem 38 extends into the bonnet casing 32
Figure 5' is a fragmentary horizontal sectional
30 in spaced coaxial Irelation to the upper end of thev >
View on the line 5-5 of Figure 1.
'
stem-29 and is provided with right screw threads.
Figure 6 is a fragmentaryV vertical sectional
40. Thetop or outer end ofthe stemf38 has a
view on the line >6-.-6 of Figure 5.
lmanipulating element in thev form of a hand
Referring to the drawings by reference charac
wheel'l I 'fixed thereto.
ters, the numeral Ill designates my improved
The spaced threaded ends of the stems 23 and
valve in its entirety. which includes a valve body` 35
38 are connected Lby a coupling member 42 which.
I I composed of a lower annular casing section I2,
comprises-.a cylindricalbody 43 having threaded
an intermediate or‘bonnet section I3, and a cap
sockets 44iand45-Jrespectively which are comple
section; I4. The sections I2, I3 and I4 are ar
mentary=to and tlsireadedlyv engage the threaded
ranged in superposed relation with the bonnet.
section I3 bolted to the open top of the lower sec 40 portions33‘- andv 43., A transverseV partition wall
46 separates the‘socketsM and 45` and when thev
tion as at. I5, and with the cap section-bolted to
valve member: 25 is in closed seated position as
the top of the bonnet section as at I6.
illustrated in .Figure lzthe'lower end ofthe stem
The lower section I2 is cast in one piece and
38’abuts thepartition wall 46, while theupper
includes a valve casing I1 having a downwardly
tapered valve seat I8. The casing also includes 45 end of the stem 29 is in spaced relation to said
partition wall; However, when the valve member
diametrically opposed inlet and outlet ports I9
25 is in open seatedposition as shown in Figurev
and 20 respectively which open through the valve
3, the lower4 end. of the stem 38V isdisposed inv
seat I8. The bottom 2| of the casing is closed
spaced relation tothe wall. 46 while the upper
andis provided with a. central bearing 22. Inter-A
posed between the lower section I2 and the bon 50 end of .thestem 29 is'A in contactinggengagement
therewithforreasons to be hereafter pointed out.
netV I3 is a bearing plate 23, which plate closes
Thecoupling. member, 42 . constitutes> a double
the top of the casing and-has a bearing opening
nut -whichfis alternately` keyedto the respective
24 inaxial alinement with the bearingv 22.
stems 29 and’ 38' during. each complete turning
Mounted within the casing I1 for rotative and
vertical movement is a valve member 25 which 55 of'ftheA valve-member 25arfrom seated closed to,
2,408,5.25
3
seated open position and vice versa. The actual
turning movement of the valve member from
53. The valve member 25 is stili unseated' but
with the stem 29 keyed to the coupling member 42,
closed to open position and vice versa is through
continued turning of the stem 38 in a counter
an arc of 90° as illustrated in Figure 4, there be
clockwise direction will cause the coupling mem
ing an added 30° turning movement of the actu
ber 42, stem 25, and valve member 25 to move
ating stem 38 relative to the valve member 25
and its stem 29 prior to turning movements of
the valve member to either open or closed posi
vertically downward to reseat the valve member
of. 150° of a circle. The degrees of turning move
ments stated herein are arbitrary and may vary
if desired.
thread into its recess 45 and engage wall 45 which
imparts a vertical upward movement to be im
ilattened side of the member 42 as at 48.
Flat
stem 29 and valve member 25 to turn as a unit to
locking keys 49 and 50 are respectively connected
closed position. When reaching closed position,
upon its seat 18 while in an open position as best
illustrated in Figure 3.
To move the valve member 25 from its open
tions and also a 30° turning movement of the
stem 38 subsequent to the limit of movement of 10 position shown in Figure 3 to its closed position
shown in Figure 1 requires a reverse cycle from
the valve member to either open or closed posi
that described for moving the same from closed
tion. Thus as each single continuous turning
to open position. Assume that the parts are as
movement. in one direction is imparted to the ac
shown in Figure 3. The operator grasps the
tuating stem 38 to move the valve member from
open to closed position, or vice versa, the stem 15 handwhcel 4| and imparts a clockwise turning
movement thereto which causes the stem 38 to
38 and its actuating handwheel 4I travels a total
parted to the stem :29 and its valve member 25 to
For alternately keying the stems 29 and 38 20 the dotted position shown in Figure 3. The valve
member 25 is now unseated and, continuous turn
to the coupling member 42, I provide a vertically
ing of the stem 38, causes the coupling member,
disposed rock arm 41 which is pivoted to the
to the lower and upper ends of the rock arm 41 25 the upper end of the rock arm 41 engages cam 55
causing the rock arm to reverse its position which
by >pin and slot connections 5l. The locking keys
effects disengagement of the key 49 from its key
49 and 53 freely slide through horizontal open
way 53 and simultaneously moves key 50 into its
ings 52 in the body 43 of member 42 for alternate
keyway 54. The stem 38 is now keyed to coupling
entry into keyways 53 and 54 in the stems 29 and
member 42 while the stem 29 is unkeyed there
38. When the valve member 25 is in closed seated
from. Continued turning movement of the ac
position and during its turning movement to
tuating stem 38 will cause the coupling member
open unseated position, the key 49 is free of its
£2 to turn therewith and impart a vertical down
keyway 53 while the key 59 is extending into its
ward movement to the stem 29 and Valve member
keyway 54. When the valve member 25 reaches
25 to reseat the same to the full line position
open position with the passage 21 in register
shown in Figure l. Thus, by a single continuous
with the ports I9 and 29, the positions of the keys
turning movement imparted to the manipulating
are reversed, that is, the key 50 is disengaged
hand-wheel 4|, the valve member 25 may be suc
from its keyway 54 and the key 49 simultaneously
cessively disengaged from its seat, moved to
moved into its keyway 53. The reverse actuation
either open` or closed position, and ñnally re
takes `place during turning movement of the valve
seated. The seating of the valve member 25 in
member 25 from open seated position to closed
both its open and closed positions prevents for
seated position and is accomplished by cams 55
eign matter from accumulating within the valve
and 56 respectively disposed above and below the
casing which, in time, may build up and affect
plane of the pivotal axis of the rock arm 41 and
disposed in the path of the outer sides thereof. 45 the free and eñìcient operation of the valve.
To eifect a more ypositive seating of the Valve
For limiting the turning movements of the
member 25, I mount rockable gates 60-60 in
valve member 25 to open and closed positions
those opposed outer sides of the valve body 26
within the range of an arc of 90°, I provide a stop
which are exposed to the inlet and outlet ports
lug 51 on the underside of the plug body 26 which
is in the’circumferential path of a pair of iixed 50 I 9 and 29 when the valve member is in closed po
sition. The gate members 6B are concavo-con
spaced radially disposed stop lugs 58 and 59 re
vex in cross section and are respectively disposed
spectively (Figure 1).v
’
in recesses lil-6|. The gate members extend
In practice, assume that the valve i8 is closed
substantially the height of the valve body 26 and
as shown in Figures 1 and 2 and it is desired to
open the same. The operator grasps the hand 551 are of a width to respectively bridge the inlet and
outlet ports as best seen in Figure 5. A fulcrum
wheel 4i and imparts a turning movement there
rib B2 extends outwardly from the closed side
tc in a counterclockwise direction. Upon initial
wall of each recess and on which the related gate
turning of the actuating stem 38 it will cause the
B9 fulcrums. The gates 60 are free to rock and
coupling member to turn therewith due to the
adapt themselves to the seat I8 during wear and
key 59 being in its keyway 54, thus causing the
provide a positive seal between the valve casing
left threadconnection 44-33 to impart an up
i1 and the valve member 25 when the valve is in
ward vertical movement to the stem 29 and its
closed position as best seen by reference to Fig
valve member 25 which disengages the valve
ures l, 5, and 6.
member 25 from its seat I8 as illustrated in dotted
lines in Figure 1. The top end of the valve stem 55
While I have shown and described what I con
sider to be the preferred embodiment of my in
29 is now engaging the partition wall 46 and
vention, I wish it to be understood that such
continued turning of the actuating stem 33 will
changes in construction and design as come with
cause the valve stem 29, valve member 25, and
in the scope of the appended claims may be re
coupling member 42 to turn as a unit. As the
valve member 25 reaches the limit of its turning 70 sorted to if desired without departing from the
spirit of my invention. Though primarily de
movement to open position,~the lower portion of
the rocker arm engages the cam 55 which imparts
signed for the actuation of valves, the mechanism
a rocking movement to the rock arm and causes
can of course be utilized in connection with other
the retraction of the key 50 from keyway 54 and
simultaneously moves the key 49 into its keyway
apparatus that requires to be operated and con
trolled inthe same way.
` l:2,408,223 ’
,
a
»
6
5’
What I claimis:
A
1. In a. mechanism for impartingÍi'lift-turn '
2. In _a mechanism for imparting lift-turn
l movements to a member, a rigid housing, a pair of
coaxial stems respectively journalled in opposed
Walls of said housing with their inner ends in
spaced
relation, reversely pitched screw threads
axial alinement with said first stemand in spaced Ul providedon
the adjacent end portions of the re- .
relation to one end thereof, said actuating stem
' spective stems, one of said stems being connected`
having ya. threaded portion of `a reverse rpitch
to the member to beelifted and turned, a manipu- "
‘ Y movements >to a member having a lstem provided
with a threaded'portion, an actuating stem. in
from the threaded portion on the’ñrst’stem, a
lating element fixed to the outer end of the- other '
coupling nut having opposed screw threaded sock
of said stems, a `coupling nut having opposedV ax
ets complementary to the respective threaded 10 ially alined screw threaded sockets complemen
portions of the stems and with which Ythey
threadingly engage, and Vmeans fcralternately
keying the coupling nut to the stemsy Vduring a
` f tary to the respective threads on said stems and
with which they threadingly engage, a rock arm
single continuous turning movement of the ac
15 Apivoted to the ends of the rock arms, keyways
tuating stem in one direction to impart a lift
turn movement to the first stem, said means in
pivoted at the side of the coupling nut, key pins
provided in the threaded end of the stems for a1
" ternately receiving the key pins, and cam means
cluding a rock arm pivoted to the coupling nut,
provided within the housing in the path ofthe
key pins pivoted to the ends of the rockV arm for
vends of the rock arm and With which the same
alternate reception infkeyways provided in the 20 engages during alternate turning ,movementl of
the coupling >nut in reverse- directions to eiîect
respective stems, and ñXed cam elements respec- Y
alternate engagement and disengagement of the
tively disposed in the path of the rock arm at
vkey pins in their related keyvvays.
opposite sides of the pivotal axis of the rock arm
and with Which the opposed end portions of the
v
«il
rock arm respectively engage.
25
HERBERT G.'NAsH.
Документ
Категория
Без категории
Просмотров
0
Размер файла
531 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа