US1257793A - Centrifugal pump. - Google Patents

Description

L. W. BODINSON.

CENTRIFUGAL PUMP.

'APPLICATION FILED JUNE 30,1913.

Patented. Feb. 26, 1918.

3 SHEETS-SHEET I.

L. W. BODINSON.

CENTRIFUGAL PUMP.

APPLICATION FILED JUNE 30, 1913.

Patented Feb. 26, 1918.

3 SHEETS-SHEET 2.

L. w. sonmsow.

CENTRlFUGAL-PUMP.

APPLICATION FILED JUNE 30. 1913.

LQWQWSB Patented Feb.26,1918.

3 SHEETS-SHEET 3.

'" vesrilrnu ruler- LABS W. nonrrrson', 01E AURORA; Hzlhfll'OllS, ASSIGNOR TO THE AMERICAN WELL WORKS,

015 AURUBA, ILLINOIS, A CORPORATION OF ILLINUTS.

- adjust the upper pumping till onnrnrruoar. rurrr.

specification of Letters IPatent.

Patented Feb. as. role.

Application meal June 30, 1913. Serial Ito. 778,585.

To all whom it may concern."

Be it known that l, Lane W. Bonmson, a citizen of the United States, residin at Aurora, in the county of Kane, in the tate of Illinois, have inventedcertain new and useful Improvements in Centrifugal Pumps, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to an improved construction of centrifugal pump comprising a pumping element preferably to be placed below the surface of the water in the well and a pumping element of larger diameter placed at or near the surface. The pump is particularly designed for pumpmg water from a deep well directly into the mains of a water su ply system. By the use of a plurality o' pumping elements arranged in series, with the upper pumping element arranged to arry as great a proportlon as possible of the complete load of the pump and with the upper pumping element readlly accessible, l am enabled to reduce the strain upon the lower pumping element to a minimum and to easily and quickly repair or reelement. It is accordingly one of my principal objects to arrange the upper pumpmg element so as to render it as readily as possible accessible for repairs or adjustment. To this end it is one of my objects to provide a new and improved two-part housing or casing for the upper pumping element comprising a stationary member which supports the working parts and a removable member which can be removed without dismantling the pump. It is one of the objects of this invent1on to provide improved means for balancing the weight and the thrust of the pumping elements so as to prevent undue friction between the runners and the casings in which i such runners revolve. It is another object of this invention to provide meansfor the proper adjustment of such balancing means to make possible the ready HIStiHJlalJIQII pf the pump. It is another object of this invention to provide an adjustable wearingring by which it is possible to compensate for wear between the runner and the casing part below it. It is another object of my invention to provide for the ready flushing out from the water raising elements of the sand and other sediment which accumulates therein. It is another object of this invention to provide means between the pump and plished these objects are illustrated'in thev drawings and are hereinafter specifically described. That which T believe to be new is set forth in the claims.

In the drawings,

Figure 1 is a central vertical section through the upper and lower portions of the pumping apparatus; 7

Fig. 2 is a view from the right in Fig. l of the connection between the pump and the main;

Fig. 3 is an enlarged detail, being a central vertical section through the balancing device;

Fig. 4 is an enlarged detail, being a central vertical section through one of the runners and the wearing-rings;

Fig. 5 is an enlarged detail, being a crosssection of the connection between the pump and the water main; and

Fig. 6 is a detail of the screen portion of the connection shown in Fig. 5.

Referring to the several figures of the drawings, 10 indicates a well pit around the mouth of a well and extending below the level of the main 11 of a water supply system. 12 indicates the casing of the well of any approved type. 13 indicates a base of any approved type secured at the top of the well pit l0. 14 indicates standards rising from the base 13 supporting at its upper end too is made in two sections, by one of which the working parts of the upper pumping element and the working parts of the waterbalancing means are supported, the other I section being readily removable without disturbing the operative relation of the parts. By this expedient, access may be had whenever desired to the upper pumping element and to the water-balancin means for adjustment or repairs. 25 in icates a closureplate for the upper end of said casing 24, said plate 25 being provided with a packing-box 26 adapted to be provided with water for sealing purposes through a pipe 27 from any suitable source of supply. 28 indicates a check-valve of any suitable type interposed between the main 11 and the upper pump member, and 29 indicates a gate-valve of any suitable type located between the check-valve 28 and the main 11.

30 indicates a well-tube connected at its upper end by means of a coupling 31 .to the lower end of the casing 24 andconnected at its lower end by means of a coupling 32 with the lower pump-casing 33. 34' indicates a shaft-casing surrounding the shaft and protecting it from foreign matter carried by the water pumped. By the use of the casing 34, oil, water, or other suitable lubricant, can be conducted to the bearings of the shaft for lubricating and cleaning purposes, as is well understood in the art. In the construction shown, the shaft casing 34 has a screw-threaded connection at its upper end with a bearing 31 and is suitably connected at its lower end to the pump casing 33. As will be readily understood the well-tube 30 and the shaft-casing 34 are adapted to be formed in sections joined together by any suitable coupling devices.

35 indicates a runner keyed or otherwise fixed upon the shaft 18 within the casing 33, said runner by its rotation with the shaft 18 being adapted to force the water in the well upward through the well-tube 30 as will be readily understood. 36 indicates a transverse port leading from the well-casing and opening upon the shaft 18. As shown in Fig. 1 the lowerpump casing 33 is formed of a pluralit of sections suitably joined together. is will be readil understood any suitable number of Sue thereto by means of screw-threads.

connected with the flange or ring 40 bymeans of webs formed integrally with said parts. The pumping unit comprising the runners 3738 is preferably to be of the same efi'ective capacity as the pumping unit comprising one or more of the runners 35 in the bottom of the well, but is to be of such a construction and arrangement as to be capable of adding materially to the pressure of the water so as to force it upward to the desired elevation. By placing the upper pumping unit at or near the surface,

I am enabled to design and construct such unit for the most effective operation without being unduly limited in any way in the matter of its diameter. In the designing of the lower pumping unit, on the contrary, primary consideration is to be given to the matter of raising the maximum amount of water through a given welltube by means of a runner the diameter of which does not exceed the inside diameter of the well tube.

Accordingly I have constructed m upper pumping unit of a larger diameter t an that of the lower pumping unit in order to obtain the greatest possible efiiciency in the operation of the ump as a whole. Inasmuch as that portion of the shaft 18 located above the runners 3738 must transmit power both to such runners and to the runners of the lower pumping unit, it is preferable that the shaft be made of a larger size at its upper end portion, as is shown in Fig. 1, the portion of the shaft located below the upper pumping unit being called upon to apply power to the lower pumping unit: only.

As best shown in Fig. 4 each of the runners 3738is provided at its lower edge with an annularly-grooved ring 42 secured 43 indicates a correspondingly-grooved ring engaging the ring 42 and held against rotation relative to said ring. In the construction shown the ring 43 has a screw-threaded connection with a ring 44 which is held against rotation by means of dowel-pins 45. 46 indicates a screw-threaded ring adapted to be tightened against the ring 44 in order to lock the ring 43 against rotation relative to the ring 44. 47 indicates a set-screw also adapted to be tightened against the ring 43 to prevent rotation. As will be readily mamas understood when the wearing rings 42-43 become worn, the set-screw 47 and the locking-ring 46 are to be loosened whereupon the ring 43 may be screwed upward again into proper engagement with the ring 42, being held in such adjusted position by means of the lock-nut 46 and the set-screw 47, as above described.

4849 indicate drain pipes communicating at their inner ends with the runner chamber underneath the flanges 39-40, respectively, said pipes being provided at their outer-ends with pet-cocks 50. 51-52 indicate pipes communicating with the runner chamber on the opposite side thereof from the pipes 48-49, said pipes 5152 being adapted to be connected with any suitable source of water underv pressure. 53 indicates stop-cocks of any suitable type interposed in the pipes 5152. Whenever desirable, preferably when the pump is at rest, the stop-cocks 53 and the pet-cocks 50 may be opened permitting the water supplied through the pipes 5152 to pass freely. across the runner chamber beneath the flanges 39-40, serving to wash out all the sand and sediment which has settled underneath said flanges from the water being 38 forming a chamber '55 within the casing 24 between the plates 54 and 25. 56 indicates a pipe connecting the chamber 55 with the interiorl of the casing 24 below the runners therein. 56 indicates a stop-cock interposed in said pipe 56.

57 indicates pipes leading to the interior of the casing 24 and to the interior of the water passage at various points therealong, the upper ends of said pipes being adapted to be connected with any suitable gages for the purpose of determining the pressure of the water at the difl'erent points of connection of said tubes with the water passage.

Referring now to Fig. 3 where the pump balancing means is shown, 58 indicates a sleeve secured upon the shaft 18 by means of a key 59 inserted in a key-way 60. Said key-way 60 is of greater length than is required for the key 59 whereby the sleeve 58 may be secured upon the shaft 18 in adjusted position thereon. 61 indlcates a disk mounted by means of a screw-threaded sleeve 62 upon a screw-threaded portion of the sleeve 58.. The upper end of the sleeve- 58 is designed to be hexagonal in shape whereby the collar 63 which has a working fit thereon is adapted to slide up and down engagement with suitable sockets in the disk 61. As will be readily understood when the pins 64 are turned out of engagement with the sockets 65 of the disk 61 the disk 61 is then. free to be adjusted up and down relative to the sleeve 58 by being turned relative thereto. When the sleeve 62 has been turned into the desired adjusted osition the pins 64 are adapted to be again rought into engagement with the sockets 65 serving to hold the sleeve 62 and disk 61 against further rotation.

66 indicates a disk or ring mounted upon the plate 54 and held against rotation relative thereto by means of dowel-pins 67. Said disk is also connected by means of bolts 68 with a plate 69 which is spaced away bearing-plate 71. Said bearing-plate 72 is also provided with an annular flan e 73 which extends along the inner face 0 said member 66 in close contact therewith, but spaced loosely away from the exterior of the sleeve 62. 74 indicates a bearing-ring mounted by means of screw-threads upon the lower end of sleeve 62.

When the pump is started into operation through the medlum of the motor '15 the weight of the shaft 18 and the parts connected therewith is supported by the rollerbearing 20 which relieves the friction sufficiently for starting the parts in motion. When the lower pump has forced the stream of water up into the suction of the upper pump and the water is thence forced outward through the valves 28 and 29, a small portion of the water is forced between the bearing- plates 74 and 72 and upward between the sleeve 62 and the flange 73 into the chamber 7 5 between the'disks 61 and 66. When the pressure in said chamber 7 5 becomes sufficient the disk 61 is forced upward, carrying with it the shaft 18 and the parts mounted thereon, permitting the water to pass between the bearing-plate 71 and the edge of the disk 61. Upon the relieving of the pressure in said chamber 7 5 by the esca e of a portion of the water the weigh-t of the shaft 18 and its parts carries the disks 61 again downward toward the bearing-plate 71,'to be again raised when the pressure in the chamber 75 becomes subsequently sufficient. The water escaping from the chamber 75 passes through suitable ports 76 in the ring 7 0 into the chamber 55 from which it passes through the loy-passpipe 56 to the suction side of the upper pump member, as will, be readil understood. In practice it is found that if the chamber 75 be properly proportionedthe shaft 18 and the runners mounted thereon vibrate freely up and down, relieving almost entirely the friction which would otherwise very rafpidly wear the runners mounted on the sha t.

By reason of my construction, providing means for the adjustment of the balancing means, no especial care need be taken in the installation of the pump as a whole with reference to the proper positioning of the balancing means, since the sleeve 62 with the disk 61 can be adjusted to its proper osition relative to the ring or disk66 wit in a considerable latitude of adjustment.

Coming now to the means for connecting the pump with the main 11, 77 indicates a section of pipe united by means of a coupling 78 with the outlet vpipeof the pump beyond the valve 29. 79 indicates a T pipe section connected by means of a suitable coupling 80 to the pipe 77, the water main 11 being connected with the end of one of the T arms by means of a coupling 81. 82

indicates a pipe connected with the main 11 by means of a coupling 83, and extending through the pipe section 79 and substantially through the pipe 77, being closed at its free end by means of a conical cap 84. 85 indicates a series of holes in the wall of the pipe 82. 86-87 indicate wire screens stretched about the pipe 82. 88 indicates a downwardly-extending pipe connected with the stem of the T pipe 79 by means of a coupling 89. 90 indicates a plate secured by means of a coupling 91 to the lower end of the pipe 88. 92 indicates a stop-cock mounted on the end of a' pipe 93 secured in the plate 90.

As will be readily understood, when water is forced by the pump into the pipes 77-7 9 about the pipe 82, the water Wlll be forcedthrough the holes 85 and through the openings of the screens 8687 and from thence into the main 11 of the water system. The

- sand and other sediment which are prevented from entering the pipe 82 by the screens 8687 accumulates in the pipe 88 from which it can be washed occasionally by opening the stop-cock 92. If desired in case the water pumped contains a great deal of sand or other sediment, the stop-cock 92 can be left open all the time to a slight extent so as to keep the pipe 88 substantially clear of sand. 7

What I claim as my invention and desire to secure by Letters Patent is 1. In a centrifugal pump, the combination of a casing, a runner adapted to be revolved therein, and pipes oommunicatingwith the interior of said casing underneath said runner one of which pipes is adapted tobe' connected with any suitable source of water under pressure for flushing out the sand and sediment therefrom.

2. In a centrifugal pump, the combination of a frame, a shaft extending down into the well, a runner mounted thereon for forcing water out of said well, an anti-friction hearing adapted to relieve the friction between said shaft and said frame, means actuated by the pressure of the water pumped for supporting a portion of the weight of the shaft so as to relieve the pressure upon said antifriction bearing, and means for adjusting said antifriction bearing and said pressure-actuated means relative to each other longitudinally of said shaft.

3. In a balanced centrifugal pump, the combination of a frame, a shaft'extend ng 'down into the well, a runner mounted thereon for forcing water out of said well, means actuated by the pressure of the water pumped for supporting said shaft against the downward pull thereon, and means for adjusting said pressure-actuated means longitudinally of said shaft.

4. In a balanced centrifugal pump, the combination of a frame, a shaft extending down into the Well, a runner mounted thereon for forcing water out of said well, means actuated by the pressure of the water pumped for supporting said shaft against the downward pull thereon, means for ad- ]usting said pressure-actuated means longitudinally of said shaft, and other means for locking the 'said pressure-actuated means against adjustment.

5. In a balanced centrifugal pump, the combination of a frame, a shaft extending down into the well, a runner mounted thereon for forcing water out of said well, and means actuated by the pressure of the water pumped for supporting said shaft against the downward pull thereon, said pressure-actuated means comprising two inter-acting members mounted on said frame and said shaft respectively, one of said members being adjustable vertically.

-6. In a balanced centrifugal pump, the combination of a frame, a shaft extending down into the well, a runner mounted thereon for forcing water out of said well, and means actuated by the pressure of the water pumped for supporting said shaft against the downward pull thereon, said pressure actuated means comprising two inter-acting members one of which is mounted on said frame and the other of which is adjustably mounted on said shaft.

7. In a balanced centrifugal pump, the combination of a casing, a shaft rotatable therein, a runner mounted on said shaft within said casing, and means communicating with the interior of said casing actuated by the pressure of the water pumped nae-area to move said shaft in the direction in which said water is being forced, said pressure actuated means comprising two inter-act: members, one of which is mounted on said frame and the other of which is ad-' justably mounted on said shaft.

, 8. lln a centrifu al pump, the combination a laterally-extending face adapted to operatively contact a corresponding face of the other member.

d. In a balanced centrifugal pump, the

combination of a casing, a shaft rotatable therein, a runner mounted on said shaftwithin said casing, and means communicating with the interior of said casing actuated by the pressure of the water pumped to move said shaft in the direction in which said water is being forced, said pressure actuated means comprising a ring-member mounted on said frame, said ring-member having two bearing-plates of did'erent diameters, and a second ring-member adjustably mounted on said shaft, said .second ring-member having two bearing-plates in registry with the bearing-plates carried by said first-mentioned ring-member.

10. In a balanced centrifu al' pump, the combination of a casing, a s aft rotatable therein, a runner mounted on said shaft within said casin and means communicating with the interior of said casing actuated by the pressure of the water pumped to move said shaft in the direction in which said water is being forced, said pressure-actuated means comprising a ringmember adj ustably mounted on said shaft and having two bearing plates bf difi'erent sizes faced toward each other, and a second ring-member mounted on said frame between the bearingplates of said first-mentioned ring-member and having bearing-plates adapted to bebrought alternatively into engagement with said first-mentioned bearing-plates respectively.

11. In a balanced centrifugal pump, the combination of a casing, a shaft rotatable therein, a runner mounted on said shaft within said casing,-and means communicating with the interior of said casing actu-' ated by the pressure of the water pumped to move said shaft in the direction in which said water is being forced, said pressureactuated means comprising a ring-member having a screw-threaded connection with said shaft and provided with two bearingplates of difi'erent sizesfaced toward each other, and a second ring-member mounted on said frame between the bearing-plates of said first-mentioned ring-member and having bearing-plates adapted to be brought alternatively into engagement with said first-mentioned bearing-plates respectively.

12. In a balanced centrifugalpump, the

combination of a casing, ,a shaft rotatable therein, a runner mounted on said shaft within said casing, and means communicating with the interior of ,said casing actuated by the pressure of the water pumped to move said shaft in the direction in which said water is being forced, said pressureactuated means comprising a ring-member havin a screw-threaded connection with said s aft and provided with two bearingplates of difl'erent sizes faced toward each other, a second ring-member mounted on said frame between the bearing-plates of said first-mentioned ring-member and having bearing-plates adapted to be brought alternatively into engagement with said firstmentioned bearing-plates respectively, and

means for holding said first-mentioned ringmember against rotation.

13. in a balanced-centrifugal pump, the combination of a casing, a shaft rotatable therein, a runner mounted on said shaft within said casin and means communicating with the interior of said casing actuated by the pressure of the water pumped -to' move said shaft in the direction. in which actuated means comprising "a sleeve fixed upon said shaft, a ring-member having a screw-threaded connection with said sleeve and provided with two bearing-plates of ddd v said water is being forced, said pressure-- ddd difi erent sizes faced toward each other, a

collar movable longitudinally of said shaft upon said ring-member, but held against rotation relative thereto, means for connecting said collar with said ring-member, and a second ring-member mounted on said frame between the bearing-plates of said first-mentioned ring-member and having bearing-plates adapted to be brought alternatively into engagement with said firstmentioned bearing-plates respectively.

14. Means for pumping waterv from a well consisting of two pumps, one pump being located down in the well having its suction extending down into the water and its water discharge connected'to the suction of the top pum said pumps being driven by a vertical riving shaft connecting them, theltdd ddd

ddd

upper pump being capable of removal for for examining the interior of the upper repairs or examination, thus saving the costpump without dismantling the pumping 10 of remToZing thg whole pump. 11 unit. I 15. e com ination with a we casing, of a vertical power shaft, connecting means LABS BODINSON' '5 between two vertical centrifugal pumps one Witnesses:

located. below the surface in the well cas- M. L. CHAPMAN,

ing and the other at the surface, and means E. I. ERICKSON.

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