Патент USA US2404288код для вставки
Ju1y16,1946. E, E. HAÉPER ' . i 2,404,288~ ' ACTUATING MEANS Filed Feb.- 9, 1944y 15 > _ , i 1 ` , i' INVENToR. B' ' »firme/ver. 'v Patented July 16, _1946 2,404,288 »UN-m STATES PATENr‘ol-‘m ‘ 2,404,288V _ ACTUATING MEANS Elmer E. Harper, Monrovia, Calif.; Esther Pardee J ' ’ Harper-,_executrin of said’Elmer E. Harper, de ' ceased .Application February 9, 1944, Serial No. 521,597 ' ‘ ' ' 1 Claim. Y y The present inventionpertaîns to valves and valve mechanism, and theprimary purpose of the invention'is to provide an improved type of pack less'valve'construction together with appropriate operating connections adapted to function as hereinafter described. ' , , 2 _ ' ~ view, representing a section taken on the line 2-2 of Figure 1; , l ' Figure 3 is a transverse sectional View, being asection taken on the line 3_3 of Figure 2; and Figure 4 is an' elevation showing one end of l ‘the unit. i Accordingly one of the principal objects in View is to devise a construction in which valve stem packing is eliminated by the use of a combination of tube and rod elements so arranged as to de 10 velop a torque action in effecting the operating or control functionas required, .This result may be‘accomplished by a combination of the tube and rod elements arranged one inside the other, whereby the rod element operates as a direct me ' ` . . proved .construction is illustrated as comprising a valve bodyor housing l0 forming an"> interior valve compartmentor chamber l2, at one end of which is provided an outlet or dischargeñtting lll,A and adjacent to the same end of the com partment is also provided -a suitable inlet fitting I6, illustrated as held in place by screws ,|8 see Figure fl. dium for transmission of the control action while the outer tube (by being connected with the rod at one Yend but independently ñxed or anchored ,_ Referring now to the drawingfin detaiLthe im _ . __ ,_ _ The inlet fitting I6 is formed with a sleeve 20 projecting inside the chamber or. compartment l2 and terminating in a valve seat 22 fora nee at its other end) opposesthe rotation of the rod, die valve 24 which is mounted vaxiallyin alvalve thereby introducing its torque action as a factor 20 spool 26 and held in place therein byïm'eans of‘a Y inthe operation, in an _effective manner. somewhat> loose connection' with a >pin 2T ;"‘ and, " In v_carrying out the invention, it is a further as shown,_the axial bore of the spool 26 is .slightly object to provide a _construction ofthe character oversize for the valve element 24 to permitflimited indicated in which the operating or control func lateral play of the needle valve forvalve-seating tion maybe transmitted in either direction, de pending uponthe type of duty to which it is to be~_applied._` The construction is further adapted 25 purposes. _ _, „ - _ _ One end of the valve spool 26 is slotted and engages slidingly with the end of the sleeve 20, for eithery manual or automatic control or regu while the opposite end of said spool is reduced and mounted slidingly ina vertical slot 28 in the It is also an object of my invention toprovider 30 side wall of the housing |0_;_ and above and below a simplified and yet strong and sturdy construc this end of the spool a pair of adjusting screws tion of relatively few parts adapted to be assem ` 29 may be employed for maintaining the spool in bled together _and operated in a foolproof man horizontal alinement with the sleeve 2U, and ner.v To'this end the construction is comprised moreover the horizontal depth of the slot 28 is of operating connections adapted to withstand sufficient to permit .the longitudinal sliding move very heavy ,external pressures while sacrificing ment of the spool _as required `for the opening no advantages as to accuracy and sensitiveness and closing action of the valve (see Figure 3). lation. of operation.' ` ‘_ _ f ' _ . The improvements are intended to be especial ly useful in connection with operations involving thehandling of corrosive substances, such as in the feeding of chlorine materials and the like, The valve spool 26 is provided with one or more annular slots or grooves BIJÉthel Ydrawing illus 40 though in no wise limited to such operations. Withthe foregoing general object in View, as well as minor objects as will hereinafter appear, the invention will now be more specifically de_ scribed by reference to the accompanying draw ing, illustrating a practical form of apparatus which has been found satisfactory for the em bodiment of my proposed improvements, after i which those features and combinations deemed to be both novel and patentable will be particu larly set forth and claimed. , In the drawing _ yFigure l is a top planl View showing a packless valve unit embodying the present improve ments-,certain portions Aof the housing structure being “broken away to‘ disclose parts on the in terior; Figure 2 is a vertical longitudinal sectional' trating two ofsuch slots or grooves, which' are spaced a suitable distance apart for separate en gagement with key lugs or lingers 32 formed on blocks' or brackets 34 which are drilled to fit over the _ends of a pair of torque tubes 36. Each of the torque tubes 36 is equipped with a rod or shaft 38 having free fitting relation Within the tube and secured thereto as well as to the corre sponding block or bracketl 34 _by a common pin 40. As illustrated in Figure 3, the inner end of each tube 35 is plugged with a sealing material 42 and removably journaled in an opening 43 in the end wall ofthe housing I @,and its opposite end is securely and permanently anchoredA as_well'as sealed within an opening 44 in `a removable endl vplate 4S forming the opposite end wall of the chamber or compartment `|72 and held in'place by suitable screws _41,v '_ „ ' f ' .' . _ The r’ods or- shafts 38 project out and beyond the outer ends of the tubes 36,_and are secured to a crank assembly 48 which is provided with 2,404,288 . y Ö . 4_ is a decided advantage over ordinary valve con l split clamping lugs 5i) and screws 5| for that,` structions using packing around the »valve stem purpose, as illustrated in Figure 4. The top por . ,which-'develops friction with` highly yvariable tion Vof the» crank _assembly includes a bar or effects fand. in many -cases preventing. 4free re link pivotally`ïconnected with the crank arms sponse of the valve to the nexternal actuating as shown in Figures 1 and 4 and having an open ing 52 for removable engagement with one endg‘j _ means. For this reason the entire absence of such packing in the improved construction ren of a pivoted operating lever 54 for which a ful ders the same especially suitable for automatic crum pin 56 is provided on the upper face of'ethe` housing l0, said lever extending longitudinally l . and proportional control applications. The exampleY of construction illustrated in the over the'housing and havingr its Vopposite enden-L drawing showsv a plurality of-torque tube and gaged by ay coilspring element 58 which tends shaft combinations in parallel, but it is to be ` Y normally to transmit a valve-closing movement to said lever; and for `counteracting said spring* " understood that a single tube and rod or shaft as action the opposite side of the lever is engaged, l sernloly` may be employed, if desired, when the operating conditions are not Ísevere, or too great by the tip of an operating or adjusting screw 60 stresses are. not imposed. The combination of threaded through an. upright bracket element. 62,. a plurality of such assemblies in anyY required A’keeper member 64 extending loosely through number provides a flexible means of meeting any an. opening 65 inthe lever 54 andV through the operating'V conditions in a most practical man coil spring .58 is anchored at its opposite ends in the bracket element 621and another bracket zo Incidentally it may be pointed out that> as element 66 on the top of the housing member l 0 ner. seeFigures 1 and.4. . , Y plate V‘lllis secured over’said opening. by means ` f ' . action,. it is immaterial in whichdirection the transmitting action is taking place, and that 25 the direction may be reversed under some condi tions, as where. the exterior .parts might be em ployed in connection-with indicating means ac tuated from within the housingchamber to de of suitable screws 12, as illustrated in Figures . » regards the transmitting function of the torque i « ' A top inspection opening 68 is provided .over the sliding valve spool 26, and a removable cover 1and'2.,- . . Itjwill be understood that by Vmeans of the note movements of a float or the like inside said foregoing construction the> movements of the lever 54 will be transmitted through the crank 30 The, materials employed in the foregoing con assembly 48 to the tube and. rod elements 36 struction will be such. as. are appropriate for the and 38, in which aA torque. or twisting action conditions. to.. be encountered, and where corro. is produced, with theresult that some-rotation of sivev substances are tovvbe handled the construe. the Ykey or vlug- elementsv 32 is likewise produced, chamber. / . thereby effecting a sliding longitudinal movement 35 tion will be of-v sucha vcharacter as to withstand the corrosive action o_f such materials. Accord ofthe valve.V spool and its needle valvev 24. The ingly, the torque tube may be of hard silver un-. arrangementdescribed is that which is adapted der some conditions, or simply of» plastic mate to produce opening movement of the valve as rial under other conditions; the rod or shaft the lever 54 is moved against the pressure of the spring 58; and since said spring tends to seat 40 may be- ofbronze, or silver-plated steel construc the valve in closed position it is apparent. that ' tion, and theother yinterior .partsmay be of suit able materials having non-corrosive properties by adjusting the screw. 60 in counteraction -to where necessary.y VThe casing or housing Ill may said spring v`the valve can be> operated either -be of cast brass, or of plastic construction,'or intoclo'sed position or set and maintained in a cast iron. jacket may be used having a lining open or any given. partly open position, as may of an appropriate material. .A jbe required. In addition to being manually con Fromthe foregoing, therefore, it will be. clear trolled in this manner, it is. also apparent that . the valve maybe operated entirely automatically by. completely retracting (or dispensing with) that I- have devised a practical and highly effl connection,V such as indicated at, 15 in Figure 1, to the operating .lever 54 at a suitable point, for operating the valve in `conjunction with other control mechanism,as is often required in. plants employing chemical feeding devices (as. in water purificationV plants) for vwhich the present im provements are particularly well adapted. embodiment of the improvements may of course be varied toy adaptthe same to meet varying con ditions and requirements of operation; accord ingly I desire to'be understood asgexpressly re cient construction for carrying out the stated the screw and attaching> a conventional control 50 purposesof my invention, and that the described serving the. right to make whatever changes or/ modifications mayV properly be deemed, to fall within the spirit» and scope of -.my invention as deñned in the appendedy claim. It is obvious that a packless valve structure « certain prior packless valve constructions, such as those of theV diaphragm type, as illustrated comprising, a. movable element, an operating in .my Patent No. 2,293,647, dated August 18, 1942. The` present improved device is not only simpler but stronger construction, and is adapted ' to operate under much heavier externalpressures by virtue of the combination> torque tube and in ternal rod’or shaft insuring against any collapse of such transmitting elements while at the same time maintaining a high degree of sensitiveness in the control function.. e n " member, and torque transmission means compris' ing a plurality of torque assemblies in parallel 65 relation and each comprising` a torque tube and shaft rod enclosed thereby and connected atcor responding ends and also >operatively engaged with said movable element. for jointly actuating the same, the other ends of the tube and. rod 70 .of each of said assemblies being respectively an Moreover the improved method of. operation provides a substantially frictionless transmission . of the operative action .to the valve member; this ' HavingA described >my invention, what I claim and desire to secure by Letters-Patent is: Actuating means of the character> described of this type affords decided advantages over ' chored in fixed positionrand. connectedwith said operating member. .Y ' ’ ` ELMER E. HARPER.