Патент USA US2408224код 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.