US2896543A - Irrigation ditch pumping apparatus with reversible impeller - Google Patents

Description

July 28, 1959 E. F. OGLES 2,396,543

IRRIGATION DITCH PUMPING APPARATUS WITH REVERSIBLE IMPELLER Filed Dec. 20, 1956 2 Sheets-Sheet 1 Fig. 8/0

Fig-4 24 I 5a Efhr/dge F. 09/65 INVENTOR.

E. F. OG LES July 28, 1959 IBLE IMPELLER IRRIGATION DITCH PUMPING-APPARATUS WITH REVERS Filed Dec. 20, 1956 2 Sheets-Shet 2 IN VEN TOR.

United States Patent IRRIGATION DITCH PUMPING APPARATUS W REVERSIBLE IMPELLER Ethridge F. Ogles, Altus, Okla.

Application December 20, 1956, Serial No. 629,616 7 Claims. (Cl. 103- 88) ditches by employing a power take-01f from a conventional tractor.

In the commercial distribution of farm tractors, some power take-01f shafts rotate in a clockwise manner, while other power take-off shafts rotate in a counterclockwise manner. In copending application, Serial No. 485,455,

for a Mobile Irrigation Ditch Pumping Apparatus, filed February 1, 1955, now Patent No. 2,799,229, granted July 16, 1957, there is disclosed a mobile pump having a particular type of carriage for the control of and operation of a centrifugal pump. The present invention is a direct improvement in the pumping apparatus contained in this application and incorporates a new concept in the construction of impellers and casings for centrifugal type pumps for permitting reversibility of the casing and reverse rotation of the impeller for pumping water by employing power from farm tractor power take-oil? shafts which rotate in either a clockwise or a counterclockwise manner, thus lending more flexibility in the use of the pumping apparatus.

Anotther object of the present invention is to provide an impeller having an enlarged central opening mounted on a hub on one side and provided with an auxiliary impeller extending into the intake of the pump for creating aninitial rotation of the water and providing a seal for the main impeller to prevent water from circling back to the center of the main impeller, thereby increase ing the efficiency and effectiveness of the impeller.

Another object of the present invention is to provide. a centrifugal pump having a reversible impeller and easing, thus rendering it adaptable for use with a power shaft rotatable in a clockwise or counterclockwise manner.

These together with other objects, and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to. like parts throughout, and in which:

Figure 1 is. a sideelevational viewof the pump of the present invention;

Figure 2 is a. sectional view taken substantially upon a plane passing along section line 2-2 of Figure 1, illustrating the' details of. construction of the casing;

Figure 3 is a sectional view illustrating the casing and impellef in reversed position;

Figure 4 is a sectional view taken substantially upon a plane passing along section line 44 of Figure 2, .illustrating further details of the pump casing, impeller, intake and auxiliary impeller;

Figure 5 is a perspective view illustrating the reversible impeller; and

Figure 6 is a perspective view illustrating the auxiliary impeller.

"2,896,543 Patented July 28, 1959- Referring now specifically to the drawings, the numeral 10v generally designates the pump of the present invention supported on a carriage generally designated by the numeral 12,, which is substantially equivalent to the carriage already disclosed in Serial No. 485,455. Briefly, this, carriage. includes a two-wheeled chassis with supporting wheels 14 and a generally U-shaped frame 16 attached to anaxle member 18. The chassis 16 may be attached in the. usual manner to a farm tractor for receiving power from a power take-off to a drive shaft 20. The shaft 20 is journaled in bearings 22 and extends through the pump casing generally designated by numeral 24. The. pump casing24 is supported for tilting movement: generally about trunnions 26 for moving or inclining the vertical plane of the casing 24 in a manner adequately described and claimed in Serial No. 485,455.

The casing. 24 includes a circular plate 28 forming a mounting plate together with a generally cylindrical casing 30 having equal-sized, enlarged openings 32 in the side walls thereof and provided with a tangential discharge pipe 34 integral therewith for connection with a conduit 36 by use of flanges 38. The cylindrical casing member 30 is somewhat in the nature of a volute, with the opening or aperture 32 being equal in both walls of the casing 30. A plurality of fastening bolts 40 are provided which extend through the mounting plate 28 and the adjacent wall of the casing 30 for rigidly securing the casing; 30 to the mounting plate 28.

Secured to the outer wall of the casing 30 is an inlet adapter 42 having a flange 44 at the outer end thereof for attachment to a flange 46 for capturing an inlet pipe 48 therebetween, with the inlet pipe 48 having a peripheral flange 50 received between the flanges 44 and 46 and held therebetween by fastening members 52. The. inner end of the inlet adapter 42, which is generally cylindrical in cross sectional area, is provided with a projecting plate or flange 56 which closes. the' opening 32 in the outer wall and is secured thereto by fastening bolts 58 which are in alignment with the fastening bolts 40, thus securing the inlet, adapter 42 tothe casing 30. Inasmuch as the spacing of the bolts 40 and 58 is identical, the casing 30 may be supported on the mounting plate 28, with either of the walls thereof disposed against the mounting plate 28 and also the adapter flange 56 may be mounted in either wall of the casing 30. V j

The power shaft extends through the mounting plate 28 and terminates in a hub 60 having a projecting flange 62, with the flange 62 having a radially extending flange 64. at the inner edge. thereof. The flange 62 is adapted to be receivedwithin animpeller generally designated by the numeral .66 having an enlarged central opening 68 in spaced walls 70 and 72. The opening 68 is defined by a recessed portion 74 which receives the edge of the flange 64, while the flange 62' is received within the inner edge of .the opening 68. The opening 68 in each wall 70 and 72 of the impeller 66 is identical in size, thus permitting the impeller 66 to be reversed on the hub '60. The walls 70. and 72 converge outwardly and are spaced from each other for providing peripheral slots designated by numeral 76 with blades. 78 extending thereacross. The blades 78 are disposed in angular relation to radial lines extending from the center of the impeller for imparting centrifugal force to liquid received within the opening 68 remote from the flange 62, wherein the water will. be discharged from the slots. 76 and outwardly through the discharge pipe 34 in a manner well known.

Each. ofthe recessed portions 74 is provided with a plurality of spaced openings or sockets 80 for receiving a projecting dowel 82 on each vane 84 of an auxiliary impeller 8 6. The auxiliary impeller 86 includes a central hub portion 88 having a longitudinal bore 90 therethrough, with each vane 84 havinga radial projection 92 and a recessed area 94 in which the projecting dowel 82 is disposed, with the dowel to the longitudinal axis of the impeller 86 for positioning in the openings 80 in the recessed portions 74 of the main impeller 66.

The auxiliary impeller 86 and the impeller 66 are held in assembled relation on the hub 60 by employing a fast-' ening bolt 96 and a suitable lock washer 98, whereby the inlet adapter 42 may be removed, after which the bolt 96 may be removed for removing the auxiliary impeller 86 and the main impeller 66, along with the casing 30 and the casing 30 and main impeller 66 are reversed and the auxiliary impeller 86 reassembled and the inlet adapter 42 restored-to its position, whereby the pump will operate effectively from a power source which rotates in either a clockwise or a counterclockwise direction. The inlet pipe 48 may be provided with an intake adapter 100 which extends downwardly for positioning into an irrigation ditch for pumping water in the desired manner.

The auxiliary impeller 86 rotates in the same direction as the main impeller 66 and creates an initial rotation of the water for helping the impeller to start the water in a path of movement generally following the contours of the casing. While the auxiliary impeller 86 creates initial rotation of the water, it also provides an efiective seal for the main impeller 66 in order to prevent water from circling back to the center or intake of the main impeller 66 which would occur between the main impeller 66 and the flange 56 on the intake adapter 42. This sealing effect prevents circulation of water, thus, increasing the efficiency of the pump, thereby providing a more effective pump.

The device operates in either direction of rotation by reversing the casing and impeller, thus rendering the device useful with farm tractors having a power take-off shaft which rotates in either direction of rotation. Generally, after the pump has been adapted for use with one farm tractor, it will generally be used for a relatively long period of time with this particular tractor, thus making the device feasible and adapting the device for use with conventional farm tractors of various types.

The foregoing is considered as illustrative only of the principles of I the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be'resorted to, falling Within the scope of the invention as claimed.

What is claimed as new is as follows: i a t 1. A liquid pumping apparatus comprising a generally cylindrical casing having side walls with an axial intake in one side wall, a tangential discharge and an impeller disposed within said casing, a drive shaft extending through the other side wall and being driven from a power source, said impeller being supported on the shaft and including a pair of identical side discs, each of which is provided with an enlarged central opening, said openings being identical a hub on the drive shaft extending into and rigidly closing the opening in one disk of the impeller, means releasably mounting the impeller on the shaft with the hub disposed in the opening in one disc whereby the impeller may be reversed on the drive shaft, said casing being provided with an enlarged opening in each side wall thereof, said openings in said side walls being identical, a mounting plate on the other side wall and journaling the drive shaft an inlet adapter mounted on the one side wall whereby the casing may be reversed, thus permitting rotation of the impeller in either direction for discharge from the casing at diametrically opposed tangential points.

2. The combination of claim 1 wherein said side discs of the impeller converge outwardly and terminate in spaced relation for providing a peripheral slot for the liquid, a plurality of blades interconnecting said discs, with the blades being disposed in angular relation to 82 being generally parallel 4 radial lines extending from the center of the impeller, said blades being inclined away from the direction of rotation of the impeller for urging liquid centrifugally outwardly of the volute casing when the impeller is rotated.

3. The combination of claim 1 wherein said impeller is provided with an axially extending auxiliary impeller extending into the intake adapter and mounted on the shaft for creating an initial rotation of the liquid before it enters the main impeller. Y

4. The combination of claim 3 wherein said auxiliary impeller includes ac'entral hub portion and a plurality of radial vanes, said central hub portion having an aper ture therethrough and said means releasably mounting the impeller including a bolt extending into'longitudinal engagement with the drive shaft and through the aperture in the central hub portion, thus detachably connecting the main impeller and auxiliary impeller to the shaft.

5. The combination of claim 4 wherein each disc of said main impeller is provided with a plurality of circumfercntially spaced sockets, each vane of said auxiliary impeller being provided with a longitudinally extending pin for engagement in the sockets thereby rigidly securing V the auxiliary impeller to the main impeller for rotation therewith, said auxiliary impeller projecting into the inlet adapter in close proximity thereto thereby forming a llqllld seal between the main impeller and the intake I adapter.

6. An impeller for centrifugal pumps having a power shaft with a flanged plate type hub comprising a pair of identical spaced discs, each having an enlarged central opening in the center thereof for receiving a flange on the plate type hub which forms a closure for the opening in one disc with the other opening forming an inlet, a plurality of blades interconnecting said discs and extending between the edges of the openings and the peripheral edges of the discs, the openings being of equal size and telescopically receiving the flange on the hub whereby either disc may be mounted on the hub for permitting reverse rotation of the impeller, said blades being inclined in relation to a radial line from the center of the impeller for urging fluid material centrifugally outwardly during rotation in one direction with the reversible mounting of the impeller permitting operation in either rotational direction.

7. The combination of claim 6 wherein said impeller is provided with a removable auxiliary impeller extending axially from the inlet forming opening in the impeller, said auxiliary impeller including a centrally disposed hub with radially extending blades for initially rotating fluid material for increasing the effectiveness of the impeller, said auxiliary impeller adapted to extend into and in close proximity to an inlet conduit for the fluid material for forming a fluid seal for the impeller, the outer rear edges of the blades on the auxiliary impeller mounted in the inlet forming opening.

References Cited in the file of this patent UNITED STATES PATENTS 1,075,300 Moss Oct. 7, 1913 1,097,729 Rice May 26, 1914 1,586,978 Dorer June 1, 1926 2,207,317 Gear July 9, 1940 2,469,125 Meisser May 3, 1949 2,707,920 Creasy May 10, 1955 2,710,503 Boyd June 14, 1955 2,759,428 Kirby Aug. 21, 1956 2,766,697 Judd Oct. 16, 1956 2,799,229 Ogles et al July 16, 1957 2,806,434 Rhoda Sept. 17, 1957 FOREIGN PATENTS 445,005 Great Birtain Apr. 1, 1936 482,965 I Italy July 14, 1953

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