US1383997A - Pump for delivering liquid - Google Patents

Description

E L PEASE PUMPFOR DELIVERING LIQUID. APPLICATION'HLEF'AUG-ZS, 1920. ,9 7, Patented July 5,1921. n l

ZSHEETS-SHE E. L. PEASE.

PUMP FOR DELIVERING, LIQUID.

APPLICATION FlLEDAUG.23.. I920- 1,33,997, Patented Jul 1921.

2 SHEETS- T 2.

siren ruler non nnnrvnnrne LIQUID.

vide a rotary or oscillatory pump of simple construction.

To this end, a pump to be used in carrying out the invention comprises a rotary or oscillating body of circular cross section andpreferably of cylindrical shape having a transverse passageway extendlng therethrough and fitted with a sliding plunger of less length than the passageway, and a the body is mounted to turn or oscillate in a fluid tight manner nd which is provided with open ings for inlet and outlet of fluids, the improved pump diifering from others of this general type in that the movement of the plunger to which displacement of fluid 18 due takes place without the aid of any mechanical contrivance' during angular motion of the rotary or oscillating body. a

The accompanying drawings illustrate several embodiments of the invention, Figure 1 being a semi-diagrammatic cross sectional view of one form of pump. Fig. 2 is a similar view of a tandem arrangement of pumps and Fig. 3 is a view of gearing therefor. Fig. 4: represents a pump having a plunger adapted to be moved by fluid under pressure. Fig. 5 is a plan of such a pump. Figs. 6, 7, 8, 9, 10, 11, 12, 18 and 1d to Fig. 1 showing modistationary casing in which are similar views fications.

Referring first to the simplest construction of pump, shown in Fig. 1, the station ary casing a is provided with a liquid inlet passage 6 adapted to be placed in communication witha source of liquid supply and an outlet passage 0 through which liquid can be forced against a head or pressure, cl being a cylindrical body mounted-toturn in the stationary casing and having a diametrically arranged passageway 7 extending through it in which is a sliding plunger 6 of less length than the passageway The arrangement is such that upon turning the Specification of Letters Patent.

in the body first body 03 about its center, the plunger 6 will be caused by gravity to slide endwise from one end portion of the passageway f to the other end portion thereof and then to slide in the opposite direction, so as to form a pocket on one-side of the plunger and then on the other side thereof, the liquid entering one pocket from the inlet passage 5 and being afterwardforced from the pocket into the outlet passage 0 against a head or pressure, by endwise movement of the plunger e the plunger at the same time forming at its opposite side another pocket which in turn receives liquid from the inlet passage 6, such liquid being afterward forced through the outlet passage 0 by the movement of the plunger in the opposite direction. In this way, upon the turning of the body in the casing a, liquid is fed into and discharged from the body at in an intermittent manner by the reciprocation of the plunger 6 in the body.

The body (Z may be provided with more than one transverse passage and one sliding plunger 6, and the casing a with more than one set of inlet and outlet passages, so angularly arranged that liquid can be delivered from the pump in a constant or nearly constant stream.

Also, two or more such pumps may be connected in tandem, the liquid delivered by one pump passing into the next and so on if desired, in order to obtain a cumulae tive effect. An example of this kind is shown in Fig. 2, the bodies (Z being driven in the same direction, as indicated by the arrows, by means such as shown in 3, comprising a wheel 9 for each body, a wheel 71 meshing with both the wheels g and a worm driven by a motor, for cooperating with aworm wheel upon the shaft of the wheel 7a.

Pumps adapted to operate in the manner set forth can be constructed in various forms and the plunger be caused to reciprocate in different ways other than simply by turning the body, but without employing mechanical means;

Thus,the plunger may be caused to make its working or operative stroke in each direction by the action thereon of fluid under pressure. The motive fluid may be steam, or air or other'uncondensable gas or gases, forinstance gases produced by combustion of liquid or gaseous fuel, or a soluble gas,

Patented awa 5, rear.

Application filed August 23, 1920. Serial No. 405,419.

.for instanceammonia. 101*, according to a second type of pump according tojthe- 1I'1-' vention', the plunger may be raised by rotation ofthe body assisted, it may be, by the action due to the production of a vacu'um," and caused to make its Working stroke by 1 gravity, assist'ed,-it may be, by 'motive fl'uid 4 acting thereon. 4

r In a pump of the type firstmentioned in theipreceding paragraph, thegpump easing," f7 inaddition to being provided witha liquid 'in'letpassage and a liquid outlet or dis-1 charge passage,, is, as Shown in Fig.4,provlded with. aninlet passage for connection to a source fromwhich steam, compressed air or'otljier'vapor or gas under pressure oan be obtained. The arrangement v n thisgcase;

is such that during one completelrotation of the. body it oneend of the passage way 7" therein-will be 'brought into communication;

with the -motive fluid supply passage is at a time when thefplungere will'be at'the same end'of the passageway so. that the plunger will belfor'ced by motive fluid to the other end of the passage andv discharge the liquid that will be "in the pocket at its opposite side throughithe liquid discharge 7 outletfc'and'at the same time" form a pocket xgl-in-th'e body that willqbefilled with motive 7 fluid. Then, by further rotation of the bodye, the pocket filled with motive fluid will be. brought 'opposite the liquid supply passage '1 use that if it'bech'arged with steam as'the motiveTfluid-Jhe steam. will be, condensedby thewater which will enter the pocket, or

the pocket be charged witha gas readily soluble'inflthe liquid to bekpumpedgzthe gas willbe dissolved in suchfliquid, thepocket I in each, case being finally filled wvith' the 40 liquid; I Upon fi'irtherirotation ofthef -body, the pocket will be brought. opposite the liquid'dischai'ge apassage c. at'the same "time thatthe opposite end-'ofthe passageway in the body, with the plunger. atthis endjis' brought opposite the inlet formotive fluid, where upon the plunger will be caused-to again move endwise -in the'pas'sageway f-but in the oppositedirection to its first movement,

and discharge the liquidi from:thegpocketat ,its opposite side through the liquid dis Y chargepassage 0. '1

V erations will berepea rotation offthe rotarybody This arrangement maybe gused'as a lift and force "pump when ,steam;' or a readily} absorbable Ltd foreach complete gasg'is used as; the motive fluid. When compressed air or other gaseous fluid is used that will not'be condensed or absorbedby liquid from thesupplypassage'b, this pas "sage "should extend upward, shown in dotted linesfin'Fig. 4t, insteadof downward as shown in full lines, I to "allow of such air orgas ifreelyescapin'g, the discharge pas sage 'cbemg also shifted aroun o5 'dt'o the position shown in dotted lines.

above describedop-l 7 The arrangement may be such as toadmit of; varying the'cross'sectional area of the -inle'tfor motive fluid to thepass'agewayand of the durationof openingofthe inlet;

For this purpose, the rotary body (Z may be so arranged that'it can -be moved endwise relatively. to the inlet 76 for motiveffluid,

leadingv to the. sai ddnlet 73,. a reg'ulating valve, Or'ea chend of the passageway fish an end wall a arrangedfto leave opening 7", or 'formed "with an opening :offsufficient' sizeto admit of the freeinletofmotivefluid and liquidin-to the jpiocket'and offtheffree discharge of liquid" fromfthe ip'o'ketj "The "passageway "f {in the {rotary body .aay',-i;as in thefeXample sho\'vn,,-be of greatei-c'ross sectional area tha ifthej inlets A: and?) Jar; I motive fluid'and liquid andthe outlet. (l' forj q d I r In each case also,5-and a-sfshown in EFIQHTQ 1 4t, the-inlet passages 76 anc;l b for-inotive'fluid and liquid v'lfeS.peeti-vely and :the, outlet pas sagevc ifor liquld, may be arranged 'atiop- "of..therotary-body, as seen; in'end view. p p Thepump. casingfa may, as showu 1n 6 ai1c1-7,,be provided. witli'an exhaust port or. passage (t =-located {between {the inlet I 1 b sothat after-the motive fluidhas acted to cause the plunger 0 .to fmake' its working V stroke, excess'o'f motivefluid may-be ex: hausted from thepock'etin the -rotary body before such pocket is brought opposite liquid inlet passage 6-.

in a bGttGTQZUlC l quieker mannerthan would otherw se, be the. ease: and perimtl' the; pump p to'beworked at a'ln'gher speed. Y

7 l/Vhen the' motive fluid used is-steamfor a soluble gas, the um ma be used as a combined-lift and force pump 'lVhen'i the 1 25 motivel flu'idis compressed air orfofther un t condensable orf insolublefgasor gases, an exe 1 haustport'or'passage-iz EigJ-e) .m 'ggg' hereinbefore mentioned,be provided:for .re j'eiri I V lieving the pressure in the pocket after'the as by a levetd (seeFig. 5) or cam; In

,1'0'5 posite sides of a vertical plane ipassing through the "longitudinalreenter 01" mot on 7 r 'for'motive fluid and the liquid' 'inlet passage 1 'Inthis wayyliquid V V will-be enabledto enter and. fill tl'1e.;.pocket inlet past pressure casing.

admitted by the pipe tional areas different parts (Zhas movedto close the inlet it has also closed the outlet 0 so that the pressure of the dellvery liquid does not to return the plunger 6 to initial-position. Or the liquid Zr may be made large in area and incline upward, a s'shown in dotted lines in 4, to admit of the ready escape of the air or other gas. Or one or more vents may be provided in the casing in such a position, for instance beyond the liquid inlet Z), as shown at a in Fig. 6, as to permit 0t air ,freely escaping from the pocket when water is entering the pocket. Or, as shown in dotted lines in .8, a vent a may, {or

a like purpose, beiormed in one or each fendof the casing a arranged to register at the requiredtimes, with one or other ot two extendlng through the exhaust passages (Z body, (Z from each outer end portion of the passage way to the corresponding end of the body.

The rotary body may be rotated by any suitable driving. means external to the pump In some cases however by the rotary body with several passageways as shown in Fig. 9, arranged in staggered relationship along its length and fitting them with heavy plungers c, for instance otlead, or loaded with lead, the plungers on the descending or right hand side of the rotary body tl may serve to render the body self driving or to assist external driving means to rotate. the body, it being understood that the. pistons are raised by the fluid pressure The passageway in the body may, in some cases, be made or" different cross sectional areas at different parts of its length and be fitted with a plunger oi different cross secof its length to suit. Anexample of. this lnnd is shown in FigQlO; In sucha case the body d may be caused to oscillate soasto bring the larger end ofthe passageway f alternately in com- ,illlllllCfltlOIl wlth a liquid cation with an exhaust opening 0 when the larger portion of the passageway is in communication, with theliqunl inlet 7) so as to enable the plunger 1 to be moved inward by the liquid and form a poclret to be iilled'by the liquid, and afterward to bring the smaller end of the. passageway opposite an inlet 7:: for admission thereto, of fluid under when the larger portion of the passageway is opposite the liquid delivery out let 0 so as to admit of the charge of liquid being torc'edo'ut ot-thepoclret. In this case, there is no admission or steam or othervapor orvgas tothe larger portion'o l the passageway,' an alternative, such a pump may inlet 70 for motive fluid and to make its descent by Vuid at the bottom. In this providing 7 .pocket formed be used in the reverse way, the passage end of smaller diameter dealing with the liquid and the larger end being supplied with the i'luid under pressure, thus increasing the dclivery pressure of the liquid.

In a pump of the secondly hereinbefore mentioned type, in which the plunger is raised by rotation of the body and caused gravity aided by of fluid and suitable "for use as a force pump, the inlet k as shown in Fig. 11, at the inlet 1) for liquid the outlet 0 for liqcase, assuming the passageway 7 in the rotary body (5 to be vertical at starting, as shown,that the plunpressure combined lift and for motive fluid is, the topof the casing to, at one side thereof and ge'r e is at the bottom of its strokeand the body tobe rotating, then motive fluid such as steam or soluble gas will have entered the pocket at the top, the supply thereof will then be cut oil and the pocket brought opposite the liquid inlet 6 so that the steam will be condensed or the gas absorbed and the pocket filled, with liquid and then cut off from the liquid inlet passage, the passageway and, plunger being meanwhile rotated about the center of the body until the plunger reaches its highest position from which it then falls by gravity, aided by the pressure of the motive fluid admitted to the pocket at its upper side so as to force the in the previously formed pocket through the lower outlet passage 0 and eliminating the said previously formed pocket and forming a pocket on its upper side into which the motive fluid passes, the above described operations being repeated on-the continued rotation; of the boc y.

An arrangement of this kind could be worked by the aid ofexhaust steam or soluble gas at atmospheric or other low pressure, the plunger then descending under'the action of gravity, only and drawing a charge of exhaust steam or soluble gas into the on its upper side. V

In a pump of this kind, the passageway in the rotary body, or each of them if a number thereofbe used, may be formed in a metal tube fixed diametrically in a hollow metal cylinder through which ''a cooling fluid, for example air is caused to flow, the

li quid arrangement forming a combined condenser and air pump. The outlet for cooling fluid from the cylinder may be controlled by a open each time the passageway in the rotary body registers with the steam inlet-and then to close, so'that cooling fluid will. flow'in an intermittent manner valve adapted to through the cylinder, 1n order to minimize the quantity thereof used.-

Fig. 12 illustrates an arrangement in which a receiver 0 common to a number of passageways f in the rotary body is connected to the outlet 0, each plunger e which acts gravity, being, if desired, fittedfivith per squareflinchfbears to the V squareinch of'thefiuid delivered-thatop-' an adjustable relief valve at 77. e For the purpose of reducing frict on, the cas ng a maybe'provlded with a pack ng ring 8 sur rounding the outlet and adapted tof bearr against the'body (l by the action otaspring J5. The body a? maybe provided with 'afis iinilar packingrin'g s surrounding the passage Way 1 ands-arranged to bear against the cas' ingund'er the action of a similar springj't Outward movement .of the packing rings,

and the degree of pressure" exertedithereby,

may beliinited by headed pins can). The

angle at which the plunger'will begin to descend depends upon the relation itsfwelght pressure 'per 1 poses itsdescent. Where the iveightj of the 3b 1 the weight of thegplungelj' being supplef .Fig. 'l3'sho V a casingaya V such as already. described,applied itofian ex Thaust steam chest ,1), 7w ,bein a eeer 5O ,plungeris relativelylargeland the" plunger '20 can fallbefore the passageway"isfvertical,

itl ill assistith'e turning Inoveinent or "the. body. d, and since this condition is more marked thelovv er the' pressure opposing the plunger,rthe pjowergto beex'pend'ed is more orless indirect proportion to 'thevvoi'k to be .done. Thevgi'eatest ork "to be done upon the body dis during the time umtgheplum gene moves from the full line position in Fig. l2to say that indicated "indotted lines,

.mented eentri-lfugalfforce acting upon it, thus ncreasing the pressure of the plunger upon the casing a; When the outlet q'jis closed, or when; the pressure there rises to that for Which the 'reli'efvalve -at r is'set,"

then the plunger ivil l;be unable to complete .its stroke {and so long'as these conditions remain vvill .be balan'ced near the center of the passageway]; whereby the force required to rotate the bodyd will be again proportionedftoflthe orkjto be done; the relief valve-mav be so set, ii -"desired,

that the pressure at .the delivery'shall be less than that represented by of the plunger. a

I Ws an arrangement compr sing rotary body d and plunger e inlet and 0, la y discharge outlet, fit being funderstood that thefliquid tOlbe delivered is -derived by condensing steam v'vhilefin the pu n1p .'jTh'e action ofthejsteani upon. the plunger a drives it to the opposite'end so v that its Wei-ght of, the passage3vay ;f 7 causes orassists the body drto turn, "the movement; being sufiicient to carry the plfun- 'g'er-"pa st the lovver'vertical line into ,fregistei' With the' steam chest of;again, In'so doing,

the steam that waslcon'fined in she pocket ,fori'ned by the 'ri'singj' oflthe plunger Lin {the passageway, will be brought into position vto be acted upon the water spray at "w; and

. gbecom' e condensed, forming a yacuu'mi'and assisting the ascent 10f {the plunger, under .lation'ship and eachfitted with a advantageously be used. T r 7 Fig, 1tshoWs another a' rrangeznent where f in a numberofpassages f each fitted withiaf heavy plunger ,6 isusedf Inthis case the several passageways are'arranged vviththeir V axes in a common transverse plane and to be in line With tli e actior'i of thesteam, to produce a further partial rotation of the body and'a dis charge of the condensed contents through; V

thisarrangjement a number the outletc. V v V g a of passageways 7 arranged instaggered repiston may each of theni' is'for'med partly by tw ltubes' V II 4 7 ca r by-t b e yeb fl we e a by; a 1 diametrically arranged J p ssafgevvay; formed in" a stationaijy hub (1 the inner ends ofthe sever-a1 tubes being connected to a sleeve 7 thatcl'osely surrounds 'thejhubd The passageway f inthela'tt'er isiarranged] 7 e air vi -p a s f \vhe'n'these coine opposite the' inletapassege L br Inotive fluid and; the outlet Iforithe fluid e In other respects .the nri being pumped. rangement f1's l1ke Fig. 9. '7

such passageway,

inlet and outlet and'a pluiigery adapted to travel alongthe passageway and of less than halfthe'length of suchpassageway seem pi fie o i yi i'beyon d the center of resum of the rdta ry:

i lvi ere yf rm g. i fception of liquid that has a capadityigreater i than the volume represented bylth'e plunger during such passage "it fluid; aperipheral inlet forsliquid and a'pe- 11-5; turn in said'c'asing andhaving adiamet'ij'iea'l v 'ripheral'outlet for liquid, a bodyadaptedzto passageway adapted tof regis'ter vvithxt'liefinlets' and outlet p iph ral I11 registers vvi'thfth'e inlets and Outlet afoiie-' pb le for these.

ing hav 'ngaperipheral'inletQfor anelastic v e d' viti r i g dffthe bodyiabout ts ris and fa plunger fitti'ng et f r e1astic F1251 fl i eip rhe iinl I 'l q dje we v iph ral bu tf r l q id, ab y idap d t J zt r flinsa c 'i g heviiig a ifi r c es sag wey each end of v'vhic'h successively 1 V said when the body is turned about its aXis and a plunger fitting within and adapted to slide along such passageway.

4. A pump comprising a stationary casing having a peripheral inlet for a liquid, a peripheral outlet for liquid and a third peripheral inlet for an elastic fluid, a body adapted to turn in said casing and having a diametrical passageway each end of which successively registers with the inlets and outlet aforesaid and a plunger fitting within and adapted to slide along such passageway, the said plunger being acted upon periodically by an elastic fluid and then caused to move along its passageway when the latter registers with the elastic fluid inlet and the plunger is at the end adjacent thereto, for the purpose specified.

5. A pump comprising a stationary casing having a peripheral inlet for a liquid, a peripheral inlet at a lower level "for an elastic fluid and a peripheral outlet for liquid disposed opposite the inlet for elastic fluid, a body adapted to turn in said casing and having a diametrical passageway each end of which successively registers with the inlets and outlet aforesaid and a plunger fitting within and adapted to slide along such passageway, the said plunger being forced upward along its passageway by the elastic fluid when the passageway registers with the elastic fluid inlet and returning under the control of the said body to a position adjacent to the inlet for elastic fluid when the said body has turned through a certain angle and while the passageway registers with the liquid outlet.

6. A pump comprising a stationary casing having aperipheral inlet for elastic fluid under ressure, a peripheral inlet for liquid, a peripheral outlet for liquid arranged opposite said inlet for elastic fluid, and a vent for elastic fluid, a body mounted to rotate in said casing and having a diametrical passageway and a plunger fitted within and adapted to slide along said passageway under the action of fluid under pressure admitted thereto, the inlet for liquid being arranged between the inlet for elastic fluid and the outlet for liquid considered in relation to the direction of turning of the said body.

7. A pump comprising a stationary casing having a peripheral inlet for elastic fluid under pressure, a peripheral inlet for liquid, a peripheral outlet for liquid arranged opposite said inlet tor elastic fluid and a vent for elastic fluid, a body mounted to rotate in said casing and having a diametrical passageway and a plunger fitted within and adapted to slide along said passageway under the action of fluid under pressure admitted thereto, the inlet for liquid being arranged between the inlet for elastic fluid and the outlet for liquid and the vent being arranged between the inlet for elastic fluid and the inlet for liquid, considered in relation to the direction of turning of such body.

8. A pump comprising a stationary casing having a number or peripheral fluid inlets and a corresponding number of fluid outlets, a cylindrical body adapted to turn in said casing and having passages therein corresponding in number to the inlets and outlets which passages are angularly displaced in relation to one another, and a plunger in each passageway adapted to slide therein, substantially as described.

9. A pump comprising a stationary casing having peripheral inlets for elastic fluid and liquid and an outlet for liquid, a body mounted to rotate in said casing and having a plurality of radially arranged passageways therein and a. plunger fitted to slide endwise in each passageway.

Signed at Newcastlc-on-Tyne, England, this 29th day of July, 1920.

EDWARD LLOYD PEASE.

Images