US1234948A - Centrifugal pump. - Google Patents

Description

l. B. SPERRY. CENTRIFUGAI. PUMP. APPLICATION HLED sEF'r.13,1915.

J. B. SPERRY. CENTRIFUGAL PUMP. APPLICATION F|LEvsEPT.1a, 19,15.

'Patented July 31, Nl?

3 SHEETS-SHEET 2.

J. B, SPERMA cEwTmruAL PUMP.

APPLICATION FILED SEPT. I3, I9I5- l Y I o I- 3323499459 Pamnted July 3l, LII?.

3 SHEETS-SHEET 3.

JOHN B. SPER'BIJ,

03E AURORA. ILLXNOIS, A CBPQEATIGN OF ILLENOIS.

A GENTRIEGAL PURE?.

Speccaton of Letters atent.

atentecl July i., imi?.

Application filed September 13, 1915. Serial No. 5); 7S.

',which the runners are mounted,'and also'to Llll substantially*balance the weight ofthe line or' shaltin'g when used 1n connection with a one side portion is adapted to be ,readily re`- mored to aiiord access to the interior of the pump without disturbing the operative elements thereof. lt is another object of my ii'irention to improve .pumping devices of this type in sundry details hereinafter pointed out. rlhe preferred meansby which l hare accomplis led my several obyects are illustrated in the accompanying drawings and are hereinafter speeilically described. That which l believe to be new and desire io cover by this application is set ortl'i'in the accompanying` claims.

ln the dra\.viugs:-

Figure l is a central rei-tical section through the upper portion ot' a pump embodying my improvements;

Fig. L) a downward continuation of the parts shown 'in Fig. l, being also a central vertical section;

Fig'. a .side view secu Jfrom the right in Fig: l ot the portion oli the casing in whiclrthe upper set ol runners and the iuid balancing' means are located;

Fig. lf a central rex-tical section showing the pumping;` mechanism loi-ated preferably below the normal lerel olf the water in the well;

Fig. 5 is a central vertical section through my improreilfiuiil balancing means; and

Figi. (S is a top View oi' the parts shown in Fig. 5. partly in section. belenY talien on line (S-b' or' Fig, 5.

let'errinov to thil several iigures of the drawings in'which zorreoonduu; parts are rei-tical deep well pump. My invention re adaptedto be cooled by indicated by the saine reference characters,-

- l-ll indicate heavy channel irons connected across the upper end of a well pit l2 supporting in position a base-.plate 13 upon which. is mounted an electric motor or other suitable driving device Effe. The vertical pump shalit l which connecte i 'to the motor le by means o' a coupling device of any suitable type is provided with an anti-riction bearing if? olf any snit. hle

supply of water entering through a pipe 18 and passing out through a pipe l0.. The shaft l5 is also provided with an endthrust anti-friction bearing 20 of any suitable type which is adapted to be cooled by the supply or water passing through the pipe 19 from the antiliriction bearing 17, such supply of water being` adapted to be carried away by a pipe 21. The anti-friction bearing l? is supported by the base-plate 13, while the thrust bearing 20 is supported by a transverse plate 22, which, in the construction shown, is formed integrally with a casing A221 supported by the base-plate 13. T he casing 33 is closed at its lower end by a transverse plate 2lwhich is provided with a' stuffing box 25 provided with pachings BGL-2T on opposite sides of a lantern-ring QS, the packings 2li-27 being adapted to be suitably compressed by a gland 29.

Secured to the lower end of the easing 23 is a shell member 30. which, together with a complementary shell member 3l (see Flo. il) makes up the casing for the upper pumping units and for the liquid balancing means. To the lower ends or the shell mem- .bers -31 is attached a collar in which l[here is secured by means of screw-threads the upper end or' a water discharge pipe etween the casing` Q3 and the shell members il() ill and between the collar 32 said shell members are provided suitable packing rings 3l by which a tight joint may be procured. ln order to render the shell member 3l readily removable without disturbing the packing rings 3l, the upper and lower bearing" edges are beveled as shown in Fig. l whereby the shell member 3l can be readily moved to the leftin Fig'. 3 When access is desired to the interior ol the casing,r of the upper pumping elements and the liquid balancingr means. As is clearly shown out for the reception of a spider 36 whichI serves to center in position a .bearing member 37 for the shaft 15, a sand-collar 38 of any suitable type being mounted above the 4 bushing 39 of said bearing to prevent the entra-nce of sand or grit between such bush-v ing and the shaft 15. The bearing member 37 is provided with screw-threads a short distance below the spider 36 for connection thereto of the upper end of the shaft pro- I tecting casing 40. As is clearly shown at the top of Fig.- 2, the shaft protecting casing 40 is perforated near itsupper end, the perforations being covered by a. sultable'sc'reen or filter 41 preferably in the form of a fine wire netting which serves to prevent the passageof sand or grit through the perforations. As is shown in Fig. 2, the pump shaft -15 is formed in sections joined together by suitablecoupling sleeves 42 of any approved type. The shaft protecting casing Vand the water discharge pipe 33 are also formed in sections joined together by a suitable coupling means-as' shown in Fig. 2. As therein shown,'this coupling means comprises a bearing hub 43 for the shaft 15 propitt, or other suitable material.

vided with a bushing 44 of brass, wood, bab- The ends of the shaft protecting casing 40 are connected to the bearing member 43 by' means of screw-threads. A spacing ring 45 is connected to the bearing member 43 by means of webs 46, such spacing ring being adapted to be secured between the adjacent ends of the discharge pipe sections 33. The ends of the sections 3-3 are connected together on opposite sides of the s acing' 'ring 45 by means of collars 47 secure by means of screw-threads therein, such collars being connected together by any suitable means not shown. The well jtube, vdown through which the shaft casing and the water discharge pipe ="-ztend, is indicatedby the numeral 48, such nell tubebeing formed in sections connected ""agether by any suitable means, as is well water discharge pipe 33 from the runners 52 mountedupon the shaft 15 in the pump'cas .of the casing 40.

lower end of the shaft protecting casing 40 is connected to a suitable sleeve 54 pro]ecting upward from thc shell 51, a bearing bushing 55 being provided at the lower end Above the uppermost runner 52 in a suitable socket in the shell 51 about the shaft 15 is mounted a suitable packing 56 adapted to be appropriately com-4 pressed by a gland 57. The shell 51 is provided at opposite sides with radially eX- tending webs-58 in which are provided ports 59 leading from the shaft l5 above the packing 56 to the exterior of the shell 51. Below the lowermost pump casing is connected a casing 60 supporting a bearing member 61 for the lower end of theshaft 15. The bearing member 61 is in the form of a housing, the upper end of which is provided with a suitable packing 62 adapted to be compressed by a .gland 63 above which is mounted about the shaft 15 a sand excluding collar 64. In the lower end of the heusA ing 61 is mounted a downwardly-opening valve 61a. To thelower end of the casing 60 is connected in any suitable manner the upper end'of a tail-pipe 65 adapted preferably to extend down into the well below the suctional influence of the runners 52.

My improved pumping apparatus comprises suitable runners 66-67 connected with the shaft 15 so as to be rotated thereby in the pump casing provided by the shell members 30-31, such runners being adapted' A bearings 17 and 2() is connected with the interior oi the pump casing adjacent to the runner66 in suitable position to receive a supply of water therefrom. Upon the oper ation of the pump, by reason of the rotation o the shaft 15 water will be forced upward through the water discharge pipe 33 by the runners 52 tothe runners (S6-467 bywhich the water will be forced to such additional height or distance as is desired. p

,My improved liquid-balancingmeans comprises in the construction shown a casting 68 having a suitable circumferential groove adapted to t upon flanges 69-70 extending inward from the upper ends of plates 71-72 carried by the shell members 30-31, respectively, forclosing the casing about the shaft 15 above the runners 66567. Pins 73 are provided at diametrically-opposite points for holding the casting 68 against rotation relative to the shell members 30-431. As is best shown in Fig. 5, the casting 68 comprises a hollow plate portion 74 reinforced by radially-extending ribs 75 and a hollow sleeve portion 7 6 whereby clear water under pressure delivered through a pipe 77 to an inlet nozzle 78 is ladapted to apply pressure atthe lower end of the hollow sleeve portion 76 at all points th ereabout, as will` be 'poespas readily understood. lioosely mounted within the sleeve portion 76 of the casting 68 is a sleeve portion 79 of a second cestino a plate portion 8O of which extends substantially parallel with the plate portion fiel of the casting 88. Aeollar 81 is mounted 'by means of screw-threads upon the lower end of the sleeve 79 adapted to be adjusted as desiredthereon, being held in adjusted posi-- tion by means of a pin 82 secured by" means y of screw-threads in a suitable socket between the collar 81 and the sleeve 79. The plate 8C is adapted to contact at its outer edge a suitable bearing vportion of 'the plate portion Zet of the casting 68, and the collar 81 is adapted to contact suitable bearing portions formed upon the lower end or' the sleeve 7G on bothvthe inner and outer edges thereot1 on opposite sides of the annular chamber in such sleeve. The sleeve 81 may, of course,

be adjusted so as to'provide any desiredaggregate play between the bearing portions oit' the casting 58 and the adjacent bearing portions of the plate 8O and the collar 81.

The casting comprising the. sleeve 79 and the plate 80 is adapted to be secured to the shaft -15 and to be adjusted relative thereto by reason of beine secured by means-oit' screwthreads upona sleeve 83 which is keyed against movement relative to the shaft v15. The sleeve 79 and'plate 80 are held in edjusted position relative to the sleeve 83 and lthe shaft 15 by means' of a collar 84 pro? thence upon the lower face of the plate 80, tending to move the plate S0 and the shaft' vided with pins 85 which are adapted to be adjusted as` desired relative to openings 86 in the upper'face of theplate 80. The eollar 84 and the upper end ot the sleeve 88 are angular in shape whereby one of such members is held against rotation relative to the other, but the collar 84 is adapted to be raised readilyalong the sleeve 83. 'Whenever it is desired to adjust the plate 80 relative to the shaft 15, the collar 84 is elevated to free the pins -85 'from the openings 8G, whereupon the plate 80 may be turned by the application of a suitable wrench for raising or lowering the shaft 15 relative to the plate 80 and consequently relative to the cast-ing 68 and the shell members 30-31- 1When the proper adjustment is secured, the

collar 8st is lowered to bring the pins 85 again into position in the openings 86,

whereupon-the parts are held against further adjustment. Y

When'water is being supplied. under pressure through the pipe 77 during the opera! tion of the pump, lthis water applies downward pressure against the collar 81 as above explained,-'tend1ng to force such collar and the shatt 15 downward. Pressure is then' applied about the lower end of the sleeve 7 6 between such sleeve and the sleeve 79, and

15 upward. As is readily understood in the art in connection with devices of this type, the alternate' upward and downward pressures upon the connected parts comprisingthe collarSl, the sleeve 79, and the plate 80,

vserve to balance the weight of the shaft 15 and to practically support the shaft 15 upon a hlm ot water being forced outward between the edge et the plaieA 8() and the bearing portion of the plate 7l. A portieri ci is free to pass through a pipe 8T to the pump I casing below the runners G6-437.

Ars is shown in' 1, a' pipe 88 connects with'the pipe 77 through which Clearwater from a separate source is delivered under pressure, such pipe 88 branching at the cou-A pling 89 into two leads 90 vand 91 provided with gate-valves 924-933,' respectively, by theuse of which they may be closed against the. passage of water if desired. The pipe 90 passes through the wall of the shell member 3G and connects withthe upper end of a duct 94 leadingl vertically through the bearing member 37 -to the interior of theshaft protecting casing e0, The pipe 91 extends downward through the well tube 48 adjacent to the water-discharge pipe being supported at intervals bythe coupling devices Ll?, being connected at its lower end with a Vduct leading-through the casing members 53 at one s1de, and through a portion of the casing member 60, leading to the shalt '15 below the packing 62 in the housing 61v By opening the valves 92-93 before the operation of the pump is started, the pipes 90u91, the shaft protecting casing 40', and the housing 61,' are all adapted to be lilled with clean water under pressure from the pipe 88, the water passing into the upper endv of the shaft protecting casing l() being adapte-d to pass down between the shaft 15 and' the bearing bushings 44% for filling the' lower sections of .the casing 40. The shaft 15 is thus lubricated ready for operation.,

AAfter the pump has been started the valve`v 92 may be closed if desired, a suliicient protecting easing 40 through the wire netting 41 for the purpose of suitably lubricating the shaft be:l rings above the runners 52. Whether the shaft casing 4() is supplied onlyv through the perforations in its'upper end, or both through such' perforations and through'the pipe 91, such water is adapted eol .amount of water being taken into the shaft ln case a portion ot the Water being pumped forces its way upward from the runner .through the. packing 56 carrying with it a small quantity ot sand or other grit, such water is effectively prevented from entering the bearing` 55 against the pressure ot' the water coming downward therethrough by reason of the free escape open to the Water through the ports 59. The Water enteringJ the housing (il through the pipe 91 is preferably delivered thereto at a greater pressure than that of' the Water heir g pumped. The Water being pumped is Jtherefore prevented from entering the housing 6l through the packing 62 into Contact with the bearing bushing 9G. lt will be understood that by a partial closing of the valves and 93 the supply ot' water to the pipes SiO-91, respectively, may be controlled so as to control to some extent the pressure in the housi 6l and in the shaft casing 40.

1ifi-Mile. l prefer to use clear Water in con neotion with the liquid balancing means, it will be understood that l do not restrict myselic in this particular except as liereinafter 'speciiically-claimed inasmuch as any suitable iuid under pressure may be used quite independently of thev character of the liquid being pumped. 1n case the pump is beingused for raising water for domestic uses, it is ordinarily preferable to use Water for purposes of balancing and lubricatinof. In case the pump is being used for raising water solely for irrigating, for example, it might be preferable to use oil both for lubricating and for balancing. In case the pump is being used for raising oil, it is ordinarily preferable to use a supply of clean oil for lubricating and balancinff. My claims are, therefore, to be construed to cover the structure shoivn quite regardless ot' the character of the liquid being pumped or the character of the liquid supplied under pressure to the balancing means, except as surh features are specifically set forth in the claims.

llhile l have shown only a single balancing mechanism, it Will be understood that l do not wish to restrict myself in this par# tisular, the size of the balancing' means and the number of separate balancing mechai isms used beingr dependent upon the length i t the line of shafting, the rate oi pumping', and other variantclements as is Well understood in the art.

That I claim as my invention and desire to secure by Letters Patent, is-

l. In a pump, the combination ot' a pump casing number adapted to support the pumpingv mechanism, a second casing member, and means for removably connecting said second casing men'iber with said irst named casing member, the upper and lower formed of two shell members in one lessees edges of said second casing' member being beveled whereby it can be removed readily Without disturbing the adjacent parts.

2. In a pump, the combination of a casing having a beveled lower edge, a pump casing' member in the form ot a shell aiiixed to said hist-named casing, a second pump casing member in the form of a shell having its upper edge beveled to correspond with ythe shape of the loiver edge ot said iirstnamed casing', a packing interposed between the beveled portions or" said two casings, and means for removably connecting said sec-Y oli-.-named shell member to said first-named. casing.

in a pump, the combination of a having' a beveled lov-:er two casing members in the form of shells having their upper edges beveled to correspond with the shape of the im` ir edge of said'r'irst-named casing, a pacltinj interposed between first-named and said shell members, and means ior iovably connecting.,y onev of said shell memb s with said and 'with the other shell member.

4. In a pump, the combination. or a. easing, comprising a removable shell member having its upper and its lower edges beveled, packings interposed between the beveled edges of said shell member and the ad-v jacent edges ot the remaining portion of the casing, and means for removably con* necting said shell member in position.

p 5.v 1n pump, the combination o shaft, rotary pumping' means mounted on said shaft, and casing the portion or which er:n tending longitudinally ot said shaft for in closing sait formed of two shell members one ot which is removable .ic-r access to the rotary prosping means, the upper and lower edges oi' the removable shell member being beveied whereby said shell nember may be readil removed `without disturbing the paclrings adjacent thereto.

G. In a pump, the combination of a 1it, rotary pumping means mounted on said shaft, and a casing the portion of which oxtending longitudinally of said sha't tor inclosing said rotary pumping means is which the operative parts are mounted and the other of'vvhich is removable access to such operative parts, the upper and lower edges of the removable shell member being beveled whereby it may be readily removed without disturbing the packings adjacent thereto. I

7. n a Huid balancing means, the combination of a iXed member having an annular chamber formed in one end thereof,I means for delivering fluid under pressure to said chamber, a shaft extending through said fixed member, a plate connected to said shaft extending over the end o said annurotary pumping means is' lar chamber, and a second plate connected to said shaft adapted to Contact the opposite end of said fixed member and adapted to trap the fluid under pressure passing from said first-named plate along said shaft to said second plate. the shaft and said two .plates being adapted to have a slight movelarlehamber, a second plate. carried by said second sleeve adapted at its outer edge'to contact the opposite end of said fixed sleeve, and means for delivering fluid under pressure to said annular chamber.

il. In a fluid balancing means. the coinbination with a fixed sleeve. and a plate formed integrally therewith, said sleeve and platel being hollowed out so as to provide an annular chamber in the end of said sleeve, of means for delivering Huid under pressure to said chamber, a shaft extending through said sleeve, and plates carried by said shaft opposite respectively the end of said sleeve and the plate formed integrally with said sleeve, said last-named plates being adapted to have a limited play toward and from said integral sleeve and plate whereby the pressure is alternately relieved opposite said two plates.

10. In a pump, the combination of a pump casing, a shaft extending into said easing, a runner in said casing adapted to side of said easing. a fixed member having bearing portions with which said platesiare adapted to contact alternately as said shaft moves longitudinally, and means for delivering fluid under pressure to said fixed member whereby the Water pumped is prevented from escaping from the casing between said fixed member and said firstnamed plate. Y

1,., In a pump, the combination of a pump easing, a shaft extending into said easing, a runner in said casing adapted to be driven by said shaft for forcing water through said casing, and balancing means connected with said shaft serving to close one end of said casing about said shaft, said balancing vmeans comprising a fixed sleeve provided with an annular chamber in its end, a plate connected with said shaft inside of said casing adapted to close said annular chamber, and means for delivering fluid under pressure to said annular chamber whereby the water pumped is prevented from escaping from said casing between said plate and the end of said sleeve.

1Q. In a pump, the combination of a. pump easing, a shaft extending into said raising,- a runner in said casing adapted to be driven by said shaft for forcing water through said casing, andbalancing means connected with said shaft serving to close one end of said casing about said shaft, said balancing means comprising a plate conneeted with said shaft inside of said casing, a second plateeonnected with said shaft outside of said casing` a fixed member having bearing portions with which said plates are adapted to contact alternately as said shaft moves longitudinally of itself in opposite directions, and means for delivering fluid under pressure to said fixed member whereby the fluid under pressure is adapted to escape, from said fixed member int-o said casing against the pressure of the water pumped.

- JOHN B. SPERRY.

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