US1795552A - Rotary pump - Google Patents

Description

F. l. GETTY ROTARY PUMP March 10, 1931.

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Patented Mag. iofn'ael` UNITED ASTA TES PATENT oFFlcE rm I.` en'r'rr, or munies, LoUIsIANn as an object the provision o a rotary pump to be used in wells. The main object of the invention is tov rovide a ty'pe, w ich is simple, eilicient and durable; one which is easy to install or remove from the well, and which is positive and depend-v able in its operation, and designed to be standardized in all its parts with reference to interchangeability.

A further obJect ofthe inventionl is to rovide ample supportfor the driving sha o the pump ulley, and a lubricating system or means for ubricating all of the bearings of the pump, while running, from one lubricator.

A further object of the invention is the provision of a pump cage seated in the lower end of the pit u on an mclined seat to lessen the liability of oreign matter being caught upon is removed.

the seat when the pum P the invention is the A further object o provisionof a pump cage having means to prevent rotation in the pit. A further object of he provision of a gasketvbetween the pum and the pit which will be surely remove the cage when the latter is removed.

A further object of the invention istthe provisionof a pump havin a casing f oritsshaft to prevent access of. oreign matter to the bearings of the shaft.4 f I A further object ofthe invention is the 35 provision of a readily removable drive head provided with eicient lubricating means.

cage with A further object of the invention is the pro'- The invention relates to umps and hasv pump of the centrifugal or tur ine both above and below the-driving invention is the.

' tion through obiects. of lthe invention will ap-i re 1 is an extension upward of Figure normar Pour appunti mea April 0,1m. smal n. 1.100.111.

. Figure 2* is an elevation upon. a larger s cale of the pump head and the upper portion of the pump pit in vertical section,

Figure 2h is a continuation downward of the structure shown in Figure 2 showing the lower portion of thepit` partlyl in vertical Isection,

" Filre 3 1s a central vertical sectionupon a stl further enlarged scale of the drive head and the dome o i Figure 4 is a plan view of the pit, v

the drive head,-

Figure 5. is a horizontal section on line Figure 6 1s a plan view of the upper bearin ofthe drive head, igure 7 isa vertical section f 5-5 of Figure 3,

of Figure 6 showing the driving shaft in v elevation,

- Figure 8-1s avdetailvertical section show.

ina centering s ider, igure9-is a 9--9 ofFigure 8,

Figure 10 1s a enlarged scale on Figure 11 is a detail vertical section on orizontal section on line horizontal', section upon an line 10--10 of Figure 8,

,Fiure 12 is a modi sections -on lines tively of Figure detail vertical section of a ed form of'drive head, Figure 13 and AFigure 14 are horizontal 113 --13 and 14--14 respec- 2,

Figure 15 is a detail central vertical secthe lower portion ofthe pumpand pit showing the impeller and impellercage,

. lFigure 16 is a horizontal section on linel 16- 6 of Figure'15', and

like section on line 17-17 v Figure 17 1s a of Figure 15.

As'shown,

the device comprises a casing 20 seated in a well 21 provided with strainers` 22, said casing'conssting `of sections, the upper of which is connected to the lower end of a pit base 23, which in turn isvconnectedv to a pit 24 ing to the surface It is preferred casing 20, straine to prevent the thereto.

comprising sections extendof the und. to fill t e well about the rs 22, and pit 24, with gravel free access of quicks'and 1 f 5 v on line 7-7 Y As shown, the invention comprises a pit base 23 for housing the impeller portion of the pump; the pit base being considerably enlarged to provide for the easy delivery of water from the pump. The impeller shown in detail in Figure 15 is indicated generally by 25. The impeller 25 is shown as housed 1n a cage 26 having a screw threaded engagement at.27 with a pump base 28.

To prevent rotation of the pump base and cage within the pit base, the pump base is shown provided, upona tapered surface 29, wit ribs 30. The inwardly tapered portion of the pit base 31 is also provided with ribs or lugs 32 so that upon the seating of the pump base in the pit base, a partial revolution of the pump base will bring the lugs 30 and 32 into engagement whereby to prevent further revolution.

In former devices of the nature which is the ,Subj ect of the present invention, the pump base is seated upon a seat having horizontal surfaces and upon its removal sand has been found to collect upon the seat whereby to prevent the reseating of the pump upon its replacement into the pit. To avoid this diiculty, the invention provides an inclined frustro-conical seat 33 in the pit base coactf ing with a complementalseat 34 carried by the pump base, a gasket 35 being supplied between the surfaces to make a tight joint.

A further defect in some former devices has been that the gasket corresponding to 35 of the present invention in some cases .remains with the pit base when the pump is removed, or becomes detached and forms an obstruction to the return of the pump to the pit. To avoid this diliculty, according to the present invention the gasket 35 fits at its lower edge in a channel 36 at the base of the frustro conical seat 34 extending behind the vertical portion 37 formed upon the pump base. Above the seat 34 the pump base is formed with a vertical cylindrical surface 38 terminating in a shoulder against which the cylindrical portion 39 of the impeller cage seats. A gasket 40 is desirably provided seated in a channel in the surface of the cylindrical portion 39 of the impeller cage and desirably placed on an angle in its channel, as shown.

The cage 39 is shown as provided with a series of outlet openings 41 between tangential vanes 42 whereby to direct lliquid escaping from the impeller in a spiral direction to pro vide an upward whirl of the liquid. leaving the impeller, which strikes the curved inner surface 43 of the interior of the pit base swell, directing the liquid upwardly with a minimum of obstructive eddies.

A cover for the impellercage is shown in the form of a plate 44 having a flange 45 seated upon the upper portion of the upper horizontal shoulder 46 of the impeller cage and having screw threaded engagement at 47 with the opening in the top of the impeller cage.

The cover 44 is shown as provided with af 4sleeve 48 projecting upwardly from the plate 44 and having a screw threaded extremity 49 connecting with a reducing couphng 5() whichin turn is internally screw threaded for connection to the lower end of a shaft casing 51.A f

A sleeve of bearing material 52 is provided tting within the sleeve 48 and having an annular flange 53 seated upon the upper edge of the sleeve 48. The sleeve 52 is shown providing a bearing for the lower end 54 of the pump shaft 55.

The pump shaft 55 is shown as secured to the impeller 25 bygmeans of a pin 56 and also by means of a key 57.

The pump shaft 55 and the shaft casing 51 are shown in the form of sections coupled together to provide the length necessary to reach to or adjacent to the surface of the ground.

The upper end of the pit casing 24 is shown as terminating in a flange 58 coacting with the flange 59 upon the pit dome 60. As shown in Fig. 5 the flanges may be screwed together `by means of bolts 6l. An outlet for the pump is shown in the dome 60 at 60. The upper portion of the dome 60 is shown as provided with a' horizontal annular surface 62 forming a seat for a flange 63 formed upon the drive head which may be bolted to the dome as by means of bolts 64. The lower portion ofthe drive head is formed as shown with a cylindrical surface 65 entering the upper opening of the pit dome and a tapering portion 66 projecting into the dome to provide an extension of the bearing surface and to direct liquid delivered by the pump away from the casing.

The upper end of the shaft casing 51 has screw threaded engagement with an enlarged sleeve 67 and a bearing sleeve 68 fitting tightly` within the lower end of the drive head telescopes with the sleeve 67, a stuffing box 69 being provided upon the upper end of the sleeve 67 to make the joint between sleeves 67 and 68 impervious. Carried within the lower end of the sleeve 68 is a bearing 70 for the pump shaft. For driving of the pump shaft there is shown a pulley 71 held firmly on the shaft at 72, 73, by set screws and also f secured against revolution thereon by means of a key 74. Revolving with the shaft there is also an upper thrust bearing 75 having engagement with the key 74 and provided with a ball race 76 seated in an annular rabbet upon its lower surface. The weight of the pump shaft and impeller is borne by the thrust bearing comprising the race 76, balls 77, 78, and the intermediate race 79 anda lower race 80. The lower race 8O is shown as supported by means of an annularange 81 preferably formed integrally with the sleeve 81 and shownas formed with an up- 85 havin screwthreaded engagement therewith and av-ing a collar 86 closely surroundmg a ring 87 below the hub of the pulley 71. The pulleyv 71 is shown as confined by a `collar 88 held in place by a set screw 89v and adjustable for height upon screw threads 90.

vTo hold an upper bearing for the drive h ad, the base 63 thereof is shown provided ith an upwardly extending integral arm 91 having a slotted way 92 in its upper portion coacting with a bearing block 93, the parts being secured together by means of a cap screw 94 having screwthreaded engagement with the block 93 as shown. The block 93 is provided with a bearing sleeve 95 having an upper annular flange 96 seated ina recess 97 in the block, which recess may be closed by means of a screw cap 98. An inner sleeve of i bearing material. 99 is desirably provided within the bearing sleeve 95.

To lubricate the pump there is shown an oil cup 100 communicating with a channel 101 leading to the recess 97. Also to provide a flood of lubricant when the pump is first started, there is shown a plug 102 which may be opened and an excessof lubricant admitted. Oil introduced ,into the recess 97 through channel 101 is led to the upper beari'ng by means of tangential channels 103 in the upper horizontal surface of the flange 96 which channels terminate tan entially at the surface of the shaft. It isl ound that this form of channel is very much more efficient in deliverin oil tothe shaft than are radial channels. o prevent rotation of the bearing downwardly through the ing screwthreaded engagement with the portion 106 of the upper bearing plug. To deflect oil from the drive shaft to the interior of the cup 105, an apron 107 is shown screwed upon a tapered portion of the drive shaft and having its cylindrical portion depending below the upper edge of the upwardly extend-v ing inner edge 108 of the cup 105. An outlet from the cup is shown in the form of a conduit 109 secured to the cup 105 lby means of a union 110. Conduit 109 is turned downwardly and telescopes with a vertical conduit l lllpreferably housed in a channel in the arm 91 and entering a vertical channel 112 in said arm, which latter channel communicates with the horizontal channel 113 leading to the thrust bearingrecess 84. A- second lubricating cup 114 is provided, being screwed into an outward opening of the channel 113.

To re-f finally escapeAvith the liquid delivered by the pump.

To provide bearings for the drive shaft at intervals within the casing 51, bearings 115 are shown, each formed with a surface channel 116 provide-d with a rib 117 as shown particularly in Figure 10. To locate the bearings 115 in vertical spaced relation and tov prevent their rotation within the shaft casing, they are placed in the desired position and the shaft casing 51 is indented as shown at 118 by a blow. The indentation by coaction with the upper or lower terminus of the channel 116 will prevent'vertical displacement of the bearing and by coaction with the rib 117, as shown in 110, will revent rotation thereof.4 The up er ends of) 115 are preferably ormed with a tapered portion 119 to direct lubricant to the surface of the shaft.

lTo' center the shaft casing 51 in the pit, a

lurality of spiders are provided shown as Joined at a split hub'- 120 which ma be clamped on the casing 51 by means of liolts 121.

Projecting from the hub 120 are shown three arms 122, each terminated in a shoe 123. The arms 122 are shown as downwardly inclined and when the pump is to be removed, after being rusted 1n pace, this inclination will assist in the ready 'removal of the spacers from the pump casing.

As shown in Figure 2* the motor power for driving the belt 124 is preferably located in alignment with the pulley 71 and arm 91, the pulley being of greater diameter than the thickness of the arm the belt may be placed around the pulley and upon eachside of the.

. power in 'some other location with respect to the outlet 60', than that illustrated, the bolts V64 may be removed and the drive head may be revolved to the desired position, after which, different holes in the fiange 63 being in registry with holes in the surface 62, the bolts may be replaced.

the bearings lia) Figures 12-14, inclusive, there is shown 4 a modificationof the drive head wherein the dome 60 is provided with an extended surface 125 carrying an annular ring 126 having a plurality of vupwardly and outwardly sloping arms 127, which arms in turn bear a base ring 128 to supporta desired motor not shown. In this form'of the inventionA the thrust bearing, which is of the nature already described, is housed in a recess 129 closed upwardly by acap 130 and the shaft 55 is provided with a collar 131 screwed thereon and secured thereto by means of a set screw 132.

A coupling member 133 is shown ke ed and clamped to the shaft by means of a. ey 134 and a clamping bolt 135, the coupling being split as shown to permit of the clamping action. Ihe coupling member is shown as pro vided with a pair of clutch recesses 136, 137, and a second clutch member'138 is provided with a complemental surface to coact therein, which clutch member is in like engagement with \a third clutch or coupling member 139.` By provision of the plurality of coupling or clutch members shown, an action in the nature of a universal joint is provided if the motor be slightly out of alignment conduit 109 may be freely swung to one sideV out of the way of the pulley or may be telescopically removed from conduit 111.

Minor changes .may be made in the physical embodiment of the invention without departing from its spirit.

What I claim:

1. A rotary pump comprising in combina.- tion, a pit, an interiorly'enlarged base for said pit, a pump base seated in said pit base, the engaging surfaces of said seat being inclined to the axis of the pit to define a frustoconical surface, means to prevent rotation be-f tween said pit base and pump base, a gasket carried by the pump base to prevent passage of water through said seat an impeller housing secured to said pump base, an impeller rotatably mounted in said housing, a drive shaft secured to said impeller, and extending axially of said pit and Vdrive means upon said shaft exterior of the pit.

2. A rotary pump comprising in combination, a pit, an interiorly enlarged base for said pit, a pump base seated in said pit base, the engaging surfaces of said seat being inrlued to the axis of the pit to define a frustoconical surface, interlocking means to prevent clockwise rotation between said pit base aud pump base, a gasket carried by the pump base to prevent passage of water through said seat, an impeller housing secured to said pmup base, an impeller rotatably mounted iu said housing, a drive shaft secured to said i impeller and extending axially of said pit, au arm supporting a bearing for said shaft exterior of the pit, drive means upon said -shaft exterior of the pit and means for adjusting thc angularrelation of said arm to .said pit about the axis of the shaft. I

2l. A rotary pump comprising in combmation, a pit` an impeller working in said pit,'a drive shaft for said impeller extending axir ally of the pit, a dome for said pit, a journal for said shaft in said dome, an arm projecting from said dome parallel with said shaft,

Ato supply lubricant to said sleeve comprising channels in the end surface thereof discharging to the shaft at a tangent thereto.

4. A rotary pump comprising in combination a pit closed at its upper end and provided with a lateral discharge for water, an impeller working in said pit, a drive shaft for said impeller, a drive pulley mounted on said shaft, a journal bearing below said pulley, anarm extending upward from the housing of said journal bearing, a vertically adjustable bracket attached to said arm, a shaft bearing mounted in said bracket, means to supply lubricant to said bearing, a drip cup below the bearing, means for diverting lubricant from the shaft to the cup, a delivery pipe or conduit attached to said cup, the said bracket and the entire group of elements `mounted thereon, including lubricators, shaft I bearlng, drip cup, and delivery pipe, being vertically adjustable with said bracket.

5. A rotary pump comprising in combination, a pit closed at its upper end provided with a lateral discharge for water, an impeller working in said pit, a drive shaft for said impeller, a drive pulley mounted on said shaft, a journal bearing below said pulley having a housing, a casing for said drive shaft having connection with said housing, an impeller bearing at the lower end of said casing, an arm extending upward from the housing of said journal bearing, a vertically adjustable bracket attached to said arm, a shaft bearing mounted in said. bracket, means to supply lubricant to said bearing, a drip cup surrounding said shaft, located under said bearing, an apron attached to said shaft depending within said cup, telescopin'g conduits, one communicating with said cup, the other communicating with the bearing below said pulley whereby provision is made for continuous travel of lubricant from the point where it is supplied .to the upper bearing, around the drive pulley to the bearings below and then on down the pump shaft casing and out at the lower end of the impeller bearing.

- 6. A rotary pump comprising in combination, a pit base and a cylindrical pit permanently installed in the ground, pump mechanism removable therefrom and replaceable therein through said pit consisting of a rotary pump seated on said pit base, a shaft and shaft casing projecting upward to the surface of the ground, and a series of independent spider arms projecting downwardly and outwardly from the shaft casing and freely engaging the surface of the pit, said spider arms being secured to said shaft casing and preserving the desired alignment by contact with the pit surface whereby the `a rms may spring in a collapsing-direction topermit o; ready withdrawal ofthe shaft casing from t e pit.

7. A rotary pump comprising in combination, a pit, an impeller working in said p-it, a. drive shaft for said impeller, a dome for said pit carrying a journalfor said shaft, an arm projecting upwardly from said dome in spaced parallel relation to said shaft, a thrust bearing mounted upon said dome in a recess therein, a lubricant channel delivering to said recess, a conduit delivering to said channel, an upper bearing carried b-y said arm, means to supply lubricant to said upper bearing., a drip cup carried by said upper bearing surrounding said shaft, means to divert lubricant from the surface of said lshaft to `said cup, and a conduit connected to said cup and telescoping with said first named conduit whereby upon disconnection of said cup and conduit and removal of said upper bearing said conduit may be freely swung aside.

8. A rotary pump comprising in combination, a pit, an impeller housing seated in said pit, an impeller rotatably mounted in said housing, a-drive shaft secured to said impeller and extendin axially of said'pit, a casing secured to sai housing and surround- Y ing said shaft, an alignment bearing in said casing surrounding said shaft, said bearing having a peripheral recess, a rib extending vlongitudinally of said recess, means to prevent displacement of said bearing within said casing comprisingan inward projection upon the interior of said casing extending into said recess and coasting with said rib to prevent rotation of the bearing.

9. A rotary pump comprising, in combination, a pit, an enlarged pit base, the inner surface of said base being substantially iush at its ,upper end with the inner surface of the pit yand curving downwardly and outwardly to, then downwardly and inwardly from the ,line of greatest diameter, an impeller housing seated in said base of less diameter than said pit and removable and insertable therethrough, said housing having outlets the lowl er portions thereof substantially iush with the terminus of the inwardly curved vsurface of the interior of said base, an impeller revolubly mounted in said housing and a drive s shaft secured to` said Vimpeller and extending upwardly through said pit.

\ 10. A rotary pump comprising, ,lin combination, a pit, an enlar ed pit base, the inner surface of said base bemg substantially flush at its upper end with the inner surface of the pit and curving downwardly and outwardly with said zone and the upper portions thereof substantially in the plane of said line of greatest diameter, an impeller revolubly mounted in said housing and a drive shaft secured to said impeller and extending upwardly through said pit.

' FRED I. GETTY.

to, then downwardly and inwardlyfrom the line of greatest ldiameter to a zone approachin the normal to the axis of the fpit, an impe ler housing seated in saidpit o less diam- .eter than said pit and insertable andremov'- 'able through the pit, said housing having outlets substantially flush at their lowr'portions

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