US2698583A - Portable relift pump - Google Patents

Description

2 Sheets-Sheet 1 Filed Dec. 26, 1951 QQN . lNVENTOR 65mm? 4 M l/ E Jan. 4, 1955 B. HOUSE ET AL 2,598,553

PORTABLE RELIF'T PUMP Filed Dec. 26. 1951 2 Sheets-Sheet 2 United States Patent pie! PORTABLE RELIFT PUMP Bennie L. House and Arthur K. Shaw, Hickory Ridge, Ark.

Application December 26, 1951, Serial No. 263,272

3 Claims. (Cl. 103-103) This invention relates to low lift centrifugal pumps, which are mounted for transport from place to place as along irrigation ditches and are used to relift the water at the lower ends of such ditches and discharge it into ditches at a higher level, and which may be used for other similar purposes.

It is a particular object of the present invention to provide a portable pump adapted to be mounted on a motor vehicle or tractor, and driven by the take-off drive mechanism with which such vehicle is equipped and which may be raised for transportation and lowered for use and to provide mechanism for leveling up the pump when it is lowered to pumping level.

A further object is to provide a pump bearing adapted for water lubrication which will act as a stufling box and through limited stufiing box leakage provide lubricating water to the bearing, during operation of the pump.

Other objects include construction details through which a simple and efficient type of structure are effected.

The means by which the foregoing and other objects are accomplished and the manner of their accomplishment will readily be understood from the following specification on reference to the attached drawings, in which:

Fig. l is a side elevational view of the apparatus with the discharge end of the discharge pipe incomplete.

Fig. 1A is a fragmentary side elevational view showing the complete discharge ends.

Fig. 2 is a sectional elevational view of the pump and pump bearing.

Fig. 3 is a sectional plan view of the pump taken on the line IIIIII of Fig. 2.

Fig. 4 is a sectional plan of the pump bearing on the line IVIV of Fig. 2.

Referring now to the drawings in which the various parts are indicated by numerals, designates a portion of the rear end of a tractor, from which a power take-off shaft 12 projects. The tractor also includes support means through which attachments of various types may be secured to the tractors and raised and lowered by tractor operated means not shown.

These support means include brackets 14 and 16 respectively extending downwardly and upwardly, a pair of stabilizer arms 18,'lifting links 20, and a lifting arm 22 actuated by hydraulic elevator means (not shown) on the tractor.

2,698,533 Patented Jan. 4, 1955 28 and the link 44 by a pin 46 to the bracket 16 the two links extending from the pins into overlying relation, and the link 42 having at its free end a cuff 48 which slidably embraces the link 44. Intermediate its length the link 42 carries a pivot pin 50 and a rigidly attached quadrant 52 having a notched edge 52A, and an arcuate slot 52B, both concentric with the pivot pin 50. A lever arm 54 having its lower end pivotally mounted on the pin 50, extends upward from the pin and carries a dog 54A adapted for engagement with the notches of the quadrant. The lever arm 54 is connected to the free end of the link 44 by a pivot pin 56, which extends through the arcuate slot 52B in the quadrant. Movement of the lever shortens or lengthens the effective length of the link assembly and provides means for leveling up the pump assembly frame 24 at differing pump levels.

Rigidly secured to and extending downward and rear-' ward from the rearward ends of the side frame members 24 are struts 58, which may be of the same cross section as the side members and which at their lower ends are rigidly secured to the top wall 60A of the volute casing 60 of a centrifugal pump identified by the same numeral, the casing having a lower wall 60B. The pump includes a vertical shaft 62. The top wall 60A of the casing is aperturcd for the shaft, the end portion 62B of which extends within the housing and carries and drives a half shrouded impeller 64 having a hub 64A and an upper, preferably horizontal shroud plate 643 to which depending blades 640 are secured. Lower wall 60B is provided with an intake or suction opening 60C substantially concentric with shaft 62. Impeller blades 64C, as shown, are rigidly The present pump assembly includes a frame comprising side members 24 which may be of channel section and carry at their forward ends rigidly secured pins 26 which extend laterally outward and engage in complementary holes (not separately numbered) in the end portions of the opposite stabilizer arms 18. Converging frame members 28, forming an A frame identified by that number, extend upward from the forward ends of the side members 24 and their upper ends are apertured to receive a pivot pin 30. Below the pin a short cross member or block 31 rigidly joins the upper ends of'the A frame. Braces 32 extend downwardly and rearwardly and are rigidly secured to the side members 24. The rearward ends of the side members 24 are connected by cross members 34 and 36, which may be of angle iron cross section faced to form a box shaped cross member to which a pump assembly 38, later herein described, is attached. The upper end of the A frame 28 is connected to the bracket 16 by an adjustable length assembly 40. The link assembly comprises two links 42 and 44, the link 42 being connected by the pin 30 to the A frame secured to hub 64A as well as to shroud plate 64B, preferably as by welding. The inner edges of the blades diverge downwardly away from shaft end portion 62B and terminate in horizontal lower edges 64D which closely overlie lower casing wall 60B and the lower edges extend inwardly to overlap the periphery of suction opening 60C.

From the impeller the shaft extends upward through a bearing of the type known as a Goodrich Cutless Marine bearing, the bearing comprising a metal sleeve 66, and a soft rubber sleeve liner 66A, having longitudinally coextensive grooves 663 through which water is fed along the shaft Within the sleeve, as a lubricant. The bearing is mounted in a vertically disposed housing sleeve 68 secured rigidly to and extending upward from the top wall 60A of the pump casing and may be held in place by set screws 70, the bearing serving as a stufling box for the pump shaft and substantially preventing any flow except that needed for shaft lubrication. The shaft is preferably provided with a bronze bearing sleeve 62A extending the length of the bearing.

From the volute casing 60 a discharge p'pe 72 extend outward and upward and at its upper end terminates in a short discharge section 72A extending rearwardly and silghtly upwardly. The pump shaft 62 extends upward into a gear box 74 which is rigidly secured to the cross member 34 as by cap screws 76. The pump shaft is driven from the take-01f drive shaft 12, through a universal joint 78, an extensible shaft comprising two sections, 80, 80A, one of which as the section 80, is preferably square and the other a hollow section adapted to slidably receive it. A second universal joint 84 and a stub shaft 86 which extends into the housing 74 and through bevel gears in the housing (and not shown), drives the pump shaft, and this irrespective of whether the pump is in raised or lowered position, or being raised or lowered.

Preferably the discharge pipe 72 is braced from the cross member 34 by a strut 88, and the intake to the casing protected by a screen 90.

It will be understood that rigid connection of the various parts may be accomplished by welding or bolting.

For transportation, the pump 60 is raised by the stabilizer arms 18, lifting links 20 and lifting arm 22 of the tractor, and after positioning for use is lowered by the same instrumentalities until the pump casing 60 is partially submerged.

The water level varies relatively to the level of the ground on which the tractor stands and vvertically of the pump shaft and leveling up of the pump casing must be established for each new location and at times during pumping where the water level drops excessively. This may be accomplished by shift of the lever 54 and if neces-.

sary, the submersion again adjusted by the tractor arms Hand 18 and linkage 20. IfEneeded further leveling up may obviously be done.

.We claim: 1:. in a portable pump assembly, a horizontally disposed shallowvolute casing having substantially parallel sleeve, :sa-id shaft terminating in an end portion within said casing, said end portion within said casing being of a length less than the depth of said shallow casing, an impeller within said casing, said impeller including an upper shroud plate closely underlying said casing upper wall, a cylindrical hub rigidly fixed to the underside of said shroud plate and axially alined with said shaft, said hub :being connected to said shaft end portion to fix said impeller to said end portion, a plurality of vertical impeller blades, extending along said shroud plate outwardly from said hub and being rigidly fixed to said shroud plate and depending below said shroud plate a, .distance in excess of the length of said end portion, said blades having inner edges adjacent the axis of said shaft, said inner edges abutting against and being rigidly fixed to said hub and extending below said hub, said inner edges below said hub uniformly diverging away from said'shaft axis to define .on shaftjrevol-ution a truncated conical space, said blades terminating in horizontal lower edges closely overlying said lower wall, said lower wall being apertured to form a suction intake opening concentric with said shaft, said horizontal lower edges extending inwardly toward said shaft axis tooverlap the periphery of said intake opening whereby the diameter of the base of said trunsated conical space is of a length less than the diameter of said intake opening, and screenmeans shielding said intake opening. I

2. In a portable pump assembly, a horizontally disposed shallow volute casing having substantially parallel upper and lower walls and a discharge opening in said casing, the upper wall of said casing being apertured to form an opening for receiving a shaft, a vertical shaft extending downwardly through said opening into said casing, said shaft terminating in an end portion within said casing, said ,end portion within said casing being of a length less than the depth of said shallow casing, an impeller within said casing, said impeller including an 7 upper shroudplate closely underlying said casing upper wall, .a cylindrical hub rigidly fixed to the underside of said shroud plate and axially alined with said shaft, said hub being connected to said shaft end portion to fix said impeller to said end portion, a plurality of vertical impellet blades, extending along said shroud plate outwardly from said hub and being rigidly fixed to said shroud plate and depending below said shroud plate a distance in excess of the length of said endportion, said blades having inner edges adjacent the axis of said shaft, said inner edges abutting against and being rigidly fixed to said hub and extending below said hub, said inner edges below 952,993 Mathis Mar..22, 1910 1,467,331 McDonald et al. Sept. 11, 1923 1,548,082 Wise Aug. 4, 1925 7 1,821,772 Ruthman Sept. 1,1931 1,829,704 Kruseet al. Oct. 27, 1931 1,919,375 Maclachlanet al. July 25, 1933 2,203,958 Greenlee June 11, 1940 2,256,647 Merrill Sept. 23, 1941 2,462,588 Wondra Feb. 22,1949 2,468,704 Peppin Apr. 26,, 1949 2,480,387 Smith Aug. 30, 1949 2,511,466 Gardiner June. 1E1, 1950 2,521,895 Bunting Sept 12,,1950 2,591,435 ,Hunsacker .Apr. 1, 1952 2,591,662 Struthers Apr. 1, 1952 2,625,111 Eisenhuth Jan. 13, 1953 FOREIGN PATENTS Italy Nov. 6, 1947 said hub uniformly diverging away from said shaft axis to define on shaft revolution a truncated conical space,- said blades terminating in horizontal lower edges closely, overlying said lower wall, said lower wall being apertured to form a suction intake opening concentric with said shaft, said horizontal lower edges extending inwardly toward said shaft axis to overlap the periphery of said intake opennig whereby the diameter of the base of said truncated conical space is of a less than the diameter of said intake opening, and screen means shielding said intake opening.

3. In a portable pump assembly, :a horizontally disposed shallow volute casing having substantially parallel upper and lower walls and a discharge opening in said casing, the upper wall of said casing being apertured to form an opening for receiving'a sha'ft, a vertical shaft extending downwardly through said opening into said casing, said shaft terminating in an end portion within .said casing, said end portion within :said casing being of a length less than the :depth of said shallow casing, an impeller within said casing, said impeller including an upper shroud plate .closely underlying said casing upper wall, a cylindrical hub rigidly fixed to the underside of said shroud plate and axially alined with .said shaft, said hub being connected to said shaft end portion to fix said impeller to said end portion, a plmrality of vertical impeller blades, extending along said shroud plate outwardly from said hub and being rigidly fixed to said shroud plate and depending below said shroud plate a distance in excess of the length of :said end portion, saidhladeshaving inner edges adjacent the axis of said shaft, said inner edges abutting against and being rig-idly fixed to :said hub and extending below said hub, said inner edges below said .hub uniformly diverging away from said shaft axis to define on shaft revolution a truncatedconical space, said blades terminating in horizontal lower edges closely overlying said lower wall, said lower wall being apertuned to form a suction intake opening concentric with said shaft, said horizontal lower :edges extending inwardly- References Cited in thefile :of this patent UNITED STATESIVPATENTS 7

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