US1921720A - Revolving cylinder pump - Google Patents

Description

Aug. 8, 1933. M, v, ANDE SON 1,921,720

REVOLVING CYLINDER PUMP Filed April 4. 1932 4Sheets-Sheet 1.

l i l 19 17 1 I 1 21 l IHVEHTOR.

j 6 I 6 g Mabel U-Mnderaon.

Aug. 8, 1933.

M. V. ANDERSON REVOLVING CYLINDER PUMP Filed April 4, 1932 4 Sheets-Sheet 2 IHV EH T0 R.

Mabel UK-Inderson.

flffarney.

Aug. 8, 1933. M. v. ANDERSON REVOLVING CYLINDER PUMP Filed April 4, 1932 4 Sheets-Sheet 3 "IHVENTOR.

Aug. 8, 1933. M. v. ANDERSON REVOLVING CYLINDER PUMP Filed April 4, 1932 4 Sheets-Sheet 4 INVENTOR.

Mabel Viln derson.

Wrra/Pms Y.

Patented Aug. 8, 1933 1 1,921,720; I REVOLVING CYLINDER Pun Ir Mabel v. Anderson, Lewiston,- Maine, assigns-er i one-fourth to Annie E. Heath, Crumpsall, Eng- *land, and one-fourth toI'EliZWbeth G.-Oanham,

Auburn, Maine Application April 3;, 1932. i Sci This invention relatesin generalterms to liquid-elevating apparatus but deals moreparticu- .larly with what is commonly known as a revolvingpump, the cylinder ofwhich isifrustoconical in form andoperates by being revolved rapidly in the liquid, the latter entering the lower, or smaller end, and discharging from the upper, larger portiony m In the conventional type of revolving. pump the cylinder is immersed for 'ashort distancefrom thebottom end-in the liquid and centrifugal. ac-

tion in conjunction with the diverging sides or" the cylinder causes the liquid to rise onits interior elevated-depending on the speed at which the cylinder is rotated and the angle of inclineof its walls. i v

Compared with the ordinary plunger pump the revolving type-has many advantages where it is required only "to raise the liquid to comparatively moderate elevations. There is comparative ly littlef'riction to overcome in the moving parts, in contrast to those of the plunger pump-as pistons and piston-rod packings and has, moreover, no suction or discharge valves to become clogged'and inoperative. It can even raisesand, chips or other foreign matter which would be more than likelyto put the average'plunger' pump outof commission.

The revolving pump, however, is strictly a drafting device and is not designed nor adapted for force-pump purposes. I

-Many attempts have heretofore improve'the revolving cylinder pumpand perfect it to such an extent that it would compare ,favorably with, or even rival the plunger or themtary'type of pumping apparatus in efliciency.

One drawback in the operation oi revolving cylinder pumps'as-they' have been constructed in the-past is that to obtain even mediocre-success they must be immersed only a short dista-nce in the liquid, as theefficiencyand eife'ctivenessof its pumping service increasingly diminishes as the cylinder is moreideeplycovered'by the surrounding: liquid. Thus-the pumpwhen operat ing ina' tank, say of water, mustbecontinuously lowered as the water is drawn therefrom, and this necessarily-requires more or less hoisting and ters and causes the pump to loose favor with those who might otherwise employ'this type of liquid-elevating device; for theirrparticular "use;

I have incorporated :in' mypresent invention the-top of the cylinder thancould be obtained been made to lowering paraphernalia which complicates matseveral features which Lbelieve makefitsuperior ,inoperation andzefiiciency- -to revolving cylinder pumps as at present constructed. :Amongrthese features are l A cylinder mountingin whic-hthe cylinder itself is enclosed withina"stationary-casing substantially' eliminating direct contact of the-outside ofthe cylinder with the surrounding liquid.

2. Adaptability of the apparatus to be submerged in the liquid-at various depths and maintain uniformpumping conditions-at all times. i

3. Facilities for procuring a variable .feeding of'the liquid-tothe interior of-=thepu'mp., '4. Means to; take advantage of and utilize the m 11 '01; to which-the 11 m can be gpower and force of the water or other; liquid cen- Surface 6 q 'triiugally ,thrown' from the' top (of the' c'ylinder when rotating-by directing the liquid on toarevolvingplatform and an upwardly' sloping receiving well for the purpose: of acquiring a considerablexper cent greater elevation of the'liquidabove other-wise, and, I

5. Various other improvements in' construction which will be disclosed as the, description proceeds. v

The character of the inventiona-maybest be understood by reference to the descriptiorr found in the" following specification when taken inaccu- -nection with the *vaccompanying drawingsin :wh-ich I have I illustratively, presented an: embodiment which, at the present time, I consider'prefierable to other possibleiorms in whichwthe' invention might be carried out. I In the drawings, Fig. ,1 is a side-elevation, partly*in:secti0n, :of

p p; Y Fig. 2'- and-Fig- 3 represent side-and plan views,

zrespectively,--of a'm'odified form of abafll'ezzplate;

"Fig.4 is asectional plan-view.t'aken j1on==line Fig, 5 is a 'sectional' elevationythe sectioii -lbing takenonline 5-7-5, Fig. 1-;

, .Fig. -6=is a plan view iof the-cylinder jbasinj, showing particularly, the-intake spouts; 1

\ Fig; 9 is asect'ion'ak elevation of-.the'discharge spout, the'section' being-taken on line'-9'-9;-Fig.

Fig. '1!) is a: plan" iview" of the rotary aplatiorm, showing "also, the? :deflect'ing plates mounted thereon; v

my improved type of double,- revolving cylinder Fig. 11 is an elevation, partly in section, of my single cylinder pump;

Fig. 11a is a fragmentary representation of a conventional type of revolving pump in which my outer casing and cylinder basin are incorporated;

pending the rotary platform.

Similar reference charactersare employed to identify like parts in all views of the drawings. Referring to the drawings and particularly to Fig. l, 1 represents the cylinder basin, made preferably in the form of a casting and constituting the water-induction element of the pump. On the upstanding sides, 1a, of the basin is secured the outer casing 2 which surrounds the pump mechanism and excludes water from the interior as well also as serving to protect the outside of the revolving cylinder from contact with the surrounding water.

Rising from the bottom of the basin and ex-- tending for a considerable distance into the cen-.

,tral portion of the pump is a straight-bored cylinder 4 out of the sides of which extend two sets of water intake ports 5 and 6, respectively.

These ports, or passages, have both an upward that more than 'if desired;

integrally.

and slightly tangential trend and the water, after passing therethrough hasacquired a directional -movement which enables the elevating cylinders 7 and 8 to more readily pick it up and force it to the discharge end of the pump. The cylinder ..7 elevates water passing through the intake ports 5 and the cylinder 8 that which flows through the passages 6.

Disposed between the two members 7 and 8 and extending for substantially their full lengths are a plurality of partitions 9, forming chambers 10 between the cylinders and partitions. I have shown in Fig. 7, simply for purposes of illustration, three of these partitions, but it is obvious this number might be employed In order to reduce resistance and assist in the upward flow of the water as the cylinders rotate I slightly incline the partitions'on the cylinder walls awayfrom the direction of rotation, that is, their lower ends are set in advanceof their upper ends.

I show in Fig. 7 a plan view 'illustratingone' method of constructing cylinders and partitions Each section of the cylinder 7 has both an inwardly and outwardly projecting flange, the outer flange serving as the partition 9 and the inner flange as the water-elevating plate 11. In fabricating the parts electric welding is employed. The inner cylinder, 7, is first set up and the joints, as at i, made by welding; the outer cylinder segments 8 are then joined at 7, completing the structure by a process involving outside welding only, in every instance. This greatly reduces the cost'of manufacture and leaves all the inner surfaces smooth and devoid of obstructions .which would retard the freemovement of the water upwardly.

On the top of cylinder 4 is a pedestal bearing 12 in which is journalled the lower end of the hollow drive shaft 13. Immediately above the bear- Fig. 16 shows an alternative method of sus-' ing 12 is a hub 14 with radially extending arms 15' the outer ends of which are secured, preferably by electric welding, to the members 11, respectively. In like manner the upper end of the pump is supported and held in vertical alignment with the shaft by a hub 14a having arms 15a similarly secured to the plates 11. A bearing 12a carries and aligns the upper end of the shaft 13...

Outwardly of and abreast of the tops of the cylinders 7 and 8 is a revoluble, annular-shape platform 16 its top surface having an upward and outward flare. The top edge of the platform is at a considerablyhigher elevation than the tops of the cylinders-and a short, vertical flange depends into the water-receiving well, or spillway 17. 6n the top of the platform are a plurality of deflector blades 18 against which the water is projected as it is forcibly thrown off the upper ends of the cylinders when revolving. The force of the impact of the water against the blades causes the platform to revolve, and when it has acquired sufficient speed the Water which falls 'on to theplatform is in turn thrown therefrom by centrifugal force into the spillway, which, as will be observed by reference to Fig. 9, has an upwardly sloping floor, as at 0:, extending to the tangential discharge spout 17a.

It is thus evident that by taking advantage of the active energy stored in the forciblyprojected water, as it is discharged from the ends of the cylinders, and utilizing this force by properly directing the flow of water, a considerably higher elevating of the latter is possible than would be the case was the water discharged directly into the spillway. 7 In other words, working under similar conditionswith respect to the amount of power applied, length of cylinder and amount of water elevated in a giventime, my construction contemplates greater efliciency of the pump by being, able to raise thewater to a higher eleva tion.

The platform revolves on rolls 19 running in a track 29 made in the annular table 21, the latter being supported on brackets 22 secured to the top of the outer casing 2. Beneath the table 22 are cross stringers 23 from which the whole pump structure may be suspended.

In Figs. 2 and 3, I show a modified form of deflector blade embodying an auxiliary sweeper paddle 18a made integral with the regular blade 18 but extended outwardly into the spillway 17. The object of the paddle element is to more rapidly and forcibly move the water toward the discharge spout and thus prevent overflowing of the spillway. It will be observed, by reference to Fig.

3, that the portion 18a is bent backwardly in order that its working surface may be presented in a more normal manner to the water as the paddle approaches the discharge opening 17c.

Through the bore of the shaft 13 operates a rod 24 the lower end of which is secured to the piston 25. On the top of the pump hood H is mounted the usual driving mechanism, as the gears G, and at one side of the main gear is an upstanding bracket 26. Pivotally mounted on this bracket is a lever 27. making connection, at 28, with the upperend of the rod 24, theholein the lever being slotted to permit the lever to swing without binding the rod. A. clamp screw 29 operating in the slot 30 of the bracket provides facilities for locking the lever in various positions. As shown in Fig. l the lever in its connectionwith the rod 24 holds the. piston 25 in its uppermost position.

'By raising the lever the piston may be lowered CODSldBlitbldDlfiSSlll'fi. But it often is desirable' to vary the amount ofwater discharged 'frorn'the to'elther cover one or both sets of the intake ports 5' and 6."

v The revolving pump operates best at: a uniform speed sufficient to easily carry the water by cen trifugal actionto and over the-tops of the byline ders; from which it discharges in all instances at pump, and with the conventional type of revolving pump'this' can be accomplished only byjvarying the speed of rotation.

In my improved pump the quantity may easily be regulated by the actuationof the lever 27; the ports 5 may be closed by lowering the piston25,

and the ports 6 may even be partially closed if only asmall amount of wateris desired to be pumped;v

When the piston isat its lowermostposition, as

shown in Fig. 12, all water isexcludedfrom the interior of the pump. 1

The lower ends of the cylinders '7' and 8 are belied or curved inwardly, inducing accelerated pickup of the Water as it passes out of the intake passagesSand 6. Slight leakages of thewater past the bottom end of the cylinder 8 into the space 31 are easily taken care of by the introduc-" tion of one or more auxiliary elevating tubes 32, the lower ends of which are open, as at-z; and'in the rotating movement of the cylinders, these tubes rapidly scoop up the'comparatively small quantity of water which may have escaped into the outlying space around the cylinder Band pass it on to the platform 16 withthe-rest of the discharging water.

It' is one of the characteristic features of my improved, revolving pump that it may be submerged up to very nearly the top of the casing 2 without thecylinder or cylinders, if of the duplex order, coming into direct. contact with the surrounding liquid. It: makes no material difiference whether the pump is submerged for one-tenth or nine-tenths of its length in the liquid as the casing 2 in conjunction with the regulatory control of admission of the liquidto the interior of the pump makes workingconditions at all times uniform and constant.

Thus, when compared with the conventional type of revolving cylinder pump, there is elimi-' nated the quite'considerable friction and loss of powerincidentin the old order of pumps, to theelevating cylinder being in direct contact with the liquid in which the pump is immersed. v l

' In my improved construction the liquid may i be admitted to the elevating cylindersonly so fast as it can conveniently and efficiently be disposed of through its'various movements through the pump. .It is, thus possible to conserve power ordinarily wasted and, furthermore, to operate the v pump under conditions which would barthe reports opened orclosed by thefsame' mechanism as applied to the pump previously described. Q

In Fig. 13 there is; however, a somewhat different construction effecting simply mechanical design of the parts havingto dowith the cylinder and supporting structure.,- I '3 Thewater-elevating blades, .in this instance, are

constructed in the fo mer channels to tile outer faces'of whichthe difierent sections-of the wall of the cylinder are attached by electric welding. The legs 33 of thechannjels stiffen the structure and the forward ones act as the water-elevating elements. v I

As was the case with thetwo-cylinder pump,

the water-elevating members are inclined on'the cylinder walls to expedite the upward'movement of the'water." The radial arms 34' are secured to the webs 35 of the channels and this prevents any obstruction being'interpos'ed to resist the passage of the'liquidupwardly along the smooth surface of the legs 33.

The operation of the pump is so simple that no lengthy description is required. The piston 25 should first be setto exclude all water from the in-' terior of the pump. After proper running speed of rotation of the cylinders has been attained, thepiston is raised to a point, uncovering the ports to admit the desired amount of water.

- In many instances" the requirements call for the elevating of the water to more than moderate heights. It is possible, of course, to construct a revolving cylinder pump ofmore than ordinary length-say twenty, ormore feet-but for certain reasons it would seem to'be, for commercial service, a mechanical impracticability, dueto its necessary bulkiness and further to the fact that y it is' somewhat diflicult to sustain'a column of water above a certain height} i i I It would be, however, a very'desirable acquisition if the accomplishment ofthis object could be brought about by apparatus employing the re volving cylinder pump-principle as much of the trouble expenenced by valve-equipped pumps,

when handling "certain material, could be elimi- 4 nated. 1 Q v p 1 In'Fig. 14, I illustrate a construction which'I have evolved toeffect the above object sought,

embodying a plurality of I cylinders vertically arranged, the *lowei forfNo. 1 cylinder being the mainpumping element'gandit's casing the only one immersed in the body'of liquid' 1, r

The intake end of this No. l pumpingunitis identical to that eithe revolving pump's hereinbefore described, and itsuppeir end is also similar except that a somewhat different spillwayis employed; v I r As the liquid passes off the platform 16 itimpacts on'theiwall of the hood and from there is deflected on to the annular shelf 40 which" is stationary and-fi xed on the cylinder basine of the pumping unit immediately above-which' unit 'I' des'ignateas-pumping unit No. 2.

Entering through the open passages 41 the water or other liquid, passesgu'pwardly through the pump No. 2 and is dischargedtherefrom in exactly thesamemann'er as it is in the pre viousl'y' described revolving pump. a

It will be observedthat there is no regulatory means in the'pu'mpNo. 2 cylinder basin, and

none is necessary, as the admission-of the liquid is governed by the intake elementsemployed for this purpose in-the bottom of r pump No; l, which latter is controlled by' a similar arrangement to that employed inth'esingle' lift, or one-stage pump, including "the rod 24-and'lever 27 This principle. of raising the liquid by boost- 1 ing it in successive stages from onepumping unit to another can be enlarged on to'an' extent limited only b'yj the laws of good mechanical practice I f j It constitutes an arrangement of. moderate size pumpingunits actuated' by ashaft-common to" alli The individual elementsyare more; easily manufactured, will handle the water more effectively'and the height to which it may be elevated greatly in excess of what would be possible i with a singlecylinder' pump. g

In Fig. 11a is shown a fragmentary sectional elevation of a revolving pumpconstructed, insofar as concerns the cylinder and hood, on somewhat similar lines to that of the old, conventional type of revolving pump. The rotary platform is eliminated and the water passes directly from the cyiinder'to the spillway in the hood. 'My casing 2, however, is incorporated intne arrangement, as well also as the feed-water-control mechanism, a description of which has hereinbefore been made.

While the description previously given of the platform 16 designates the water discharging from off the tops of the cylinders as being the sole power medium through which rotation is given it, I may elect to employ a modified construction for this element, in which case somewhat diiferent conditions exist as o its actuation.

If reference be had to Fig. 16 it will be observed that the platform is attached to and supported from thin radial ribs 45, the inner ends of which are secured onthe hub member 46 whichlater is loosely mounted and revoluble on theshaft 13. This hub member, 46,bears on the top face of the cylinder-carryinghub 14a, the latter being fixed on the shaft 13.

In my former structure hereinb'efore described, the actuation of the platform was wholly distinct from the positive power actuation of the cylinder, but in the present instance, as depicted in Fig. 16, there is a frictional interconnection betweenthe platform elements and the positively driven hub 14a. Thus the platform may start to rotate, at first very slowly, immediately after the shaft 13 be'gins to revolve, for the reason that the whole weight of the platform and connecting parts is borne by the hub 14a.

' It is not expected, nor is it required, that the platform be brought to the full operative speed of the cylinder through this frictional contact between the two hubs, but it will have acquired a moderately high rate of rotatable movement previous to the time the water is admitted to the cylinder and this will preventexcess accumulation of the liquid on the platform surface.

In actual pumping operations it is not designed to positively, or even frictionally, rotate the platform for in that instance there would be a draft 'on the power which is designed wholly to drive the cylinder of the pump. The reason for incorporating the platform in the pump structure isv to enable the water .to rise or be elevated to a point higher than could be accomplished by the cylinder alone; the object in rotating it is so that it may more readily shed the liquid onceit has been deposited on the platform surface. 7

The features, in general, characterizing my improved revolving cylinder pump will, it is believed, add materially to the efficiency and dependability of pumping apparatus of this class and create thereby a demand for them which at the present time does not exist;

What I claim is: 7

#1. A revolving cylinder pump comprising in combination a water-receiving hood having a tangential discharge opening, an inverted frustoconical shape casing secured at its larger'end to the bottom portion of said hood, a ported basin on the bottom end of said casing, a central, aXial-' ly. disposed bore in said basin, 2. piston in said bore, a tubular, revoluble shaft axiallydisposed I within said casing, the lower end of said shaft being journalled in said basin, a bearing on said 1 hood in which the upper end of said shaft oper-. ates, a frusto-conical cylinder secured on said shaftiwithin and disposed in spaced relation to said casing, a rod operable within said tubular shaft with its lower end fixed in said piston, and means to actuate said rod. I

2. A revolving cylinder pump comprising in combination a vertically disposed cylinder of illverted frusto-conical shape, its topend being belledoutwardly and its lower endbelled in-' wardly, a non-rotating casing surrounding said frusto-conical cylinder and laterally spaced therefrom, said casing extending vertically substane tially the full length of said cylinder, a basin secured to the lower end of said casing, a cen-- tral, vertically disposed bore in said basin, intake ports of upward trend providing communication between the outside and: the interior of said casing, a piston in said bore arranged-to slide over said ports, either to open them in various amounts or close them entirely, a tubular, revoluble-shaft axially disposed within and secured to said frusto-conical cylinder, anon-rotating rod operable within said tubular shaft and having itslower end fixed in said piston, means on the upper end of said rod to raise and lower it for the purpose of causing said piston to open and close, respectively, the said ports, and means to rotate said shaft.

3. In apparatus of the class described comprising in combination a revoluble, frusto-conical shape cylinder having an inturned lower end, a stationary casing surrounding and disposed in spaced relation to said cylinder, a basin secured to the lower end of said casing, a straight bore cylinder in and extending upwardly from the bottom of said basin, the lower end of said straight bore cylinder being open to the outside, intake ports in said basin extending from said straight bore cylinder to the interior of said casing, a piston operable in said straight bore ,cylinder and adapted to either open or close said intake ports whereby liquid, in which said casing J is adapted to be immersed, may be admitted to or excluded from the interior of said casing, an annular platform, having an outwardly and, upwardly flaring top s'urface'surrOundirig the upper end of said frusto-conical cylinder, a track beneath said platform, rolls on said platform adapted to traverse said track whereby rotation may begiven said platform, a shaft axially mounted in and secured to said frusto-conical cylinder, means torotate said shaft, and a hood, having a discharge outlet therefrom, surmounting said casing. I g I 4. In apparatus of the class described comprising a stationary casing adapted to be immersed in a body of liquid, a basinsecured-to the lower end of said casing, a frusto-conical shape cylinder revoluble in said casing, a shaft axially mounted in and secured to said cylinder,ja hood surmounting said casing and secured thereto, a spillway in said hood, a'discharge spout opening out of said spillway, ports through said basin providing for the admission of the liquid, in which said casing is immersed, into the interior of said casing, means to control the passage of the-liquid through said ports, either to vary the quantity admitted or [to exclude it entirely, an annular platform revolubly mounted outwardly of the upper end of said frusto-conical cylinder and disposed in axial alignment therewith, the top surface of said platform being inwardly inclined; a plurality of bafiie plates secured to and rising from the top surface of'said platform, a paddle on the end of each ofsaid bafile plates extending outwardly and downwardly into said spillway,

and means to rotate said shaft whereby rotation may be given said frusto-conicalcylinder and by the force of the liquid centrifugally thrown from said cylinder and impacted on said baffle plates rotation may also be had of said annularplatform. V

5. A revolving cylinder pump comprising in combination a stationary casing adapted to be immersed in the liquid to be elevated, a revoluble,

frusto-conical cylinder operable in said casing, a basin on the lower end of said casing, means to provide, through said basin, a regulated admission of the liquid to thevinterior of said casing, an annular, inwardly inclined platform disposed outwardly of said frusto-conical cylinder and exsuperimposed on said casing, a basin secured in said hood, an annular, inwardly inclined shelf extending from said last mentioned basin upwardly within said hood and to within a short 5 tending upwardly above the top thereof, a hood I spaceddistance from the outer wall thereof, in-' take passages in said last mentioned basin merging into the space located immediately above said inclined shelf, a second casing surmounting said hood, a revoluble, frusto conical cylinder oper-' able in said secondly mentioned casing, a shaft axially mounted in and secured to both of said frusto-conical cylinders, a second hood mounted on and above the said second casing, a spillway in said last mentioned hood, a discharge outlet therefrom, and means torotate said shaft.

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