US2631539A - Pump - Google Patents

Description

March 17, 1953 I H H, WO FE ETAL 2,631,539

PUMP

5 Sheets-Sheet 1 Filed NOV. 21, 1947 INVENTORS H. HIX WOLFE 8| EDWARD W. HAAS March 17, 1953 H I-LIWOLFE ET AL I 2,631,539

H.HIX WOLFE 8| EDWARD W. HAAS BY {7W 6 7M ATTORNEYS March 17, 1953 H H. WOLFE ET AL PUMP 5 Sheets-Sheet 5 Filed Nov. 21, 1947 INVENTORS a E F L O W M H H EDWARD.W.HAAS

March 17, 1953 I H H. WOLFE ET AL, 2,631,539

.INVENTORS H. HIX WOLFE. a EDWARD W.HAAS

qATTORfiEYS Patented Mar. 17, 1953 PUMP H. Hix Wolfe and Edward W. Haas, Dayton, Ohio,

assignors to The Dayton Pump and Mfg. Company, Dayton, Ohio, a corporation of Ohio Application November 21, 1947, Serial No. 787,298

The present invention deals with water pumps and is concerned primarily with a pump of the type which is readily adaptable for use with either shallow or deep wells.

A pump of the type with which this invention is concerned comprises generally a'main casing'th'at houses an impeller, an air separat- 'ing chamber, together with a jet device which in cooperation with the other elements, creates a partial vacuum that is effective on a suction 'pipe that is connected to the casing. This jet device is employed when the pump is used on a shallow well, but removed when the pump is used on a deep well. The casing is formed with an opening in alignment with the jet device and this opening permits removal and positioning of the jet device. When the pump is being used on a shallow well, this opening is closed by a plug, but when used on a deep well, a pressure or drive pipe is connected thereto.

While pumps of this general type are now meeting with an appreciable degree of usage, the now known pumps have certain short-comings which are intended to be obviated by the present invention. Among these may be noted that the presently known pumps generally in- I clude a single impeller which is ordinarily of 'the centrifugal type.

The present invention recognizes that in many instances, a single impeller'will not be sufficient to supply the pressure required. Accordingly, a highly important object of the present invention lies in the provision of a pump assembly of the character above indicated, which is particularly adapted to enclose either one or a plurality of impeller elements."

In achieving this object, a casing for each impeller is provided. This casing is divided into 'two 'complemental parts.

provision of a new and improved way of mounting ithe impeller casing in the pump assembly. In accordance with this invention, the impeller c'asing's are first assembled with the innermost partofithe inner. casing being'bolted to the outeriilmost p'art of the outer casing and with any in- 3 Claims. (Cl. 1035) tion with a deep well, a drive pipe is connected termediate casing parts clamped therebetween. The outermost casing part is then bolted to the end plate of the pump assembly, whereupon, the latter element is in turn bolted to the main pump casing. Such an arrangement presents the advantage of readily assembling as many impeller units as may be required in the main pump assembly. a a

When a pump, of the type with which this invention is concerned, is employed in connecto the air separating chamber of the pump casing; With the devices heretofore employed, there has not been any effective way for controlling or regulating the pressure of water which is supplied to this driv pipe. With this condition in mind, a further object of the invention, is the provision, in a pump assembly of the type above noted, of means for regulating the pressure of water that is supplied to the drive pipe.

When the jet device is employed for shallow well purposes, it is highly important that it operate with a high degree of efficiency so as to create a suction to the maximum degree possible. With this thought in view, a further ob-. ject of the invention lies in the provision in a pump, of the type aforesaid, of a pump casing that is provided with a suction pipe inlet together with means of connection from said inlet directly to the venturi of the jet device. By closely positioning the suction inlet with respect to the venturi, maximum efficiency is achieved. I

Yet another object of the invention is the provision of a new and improved pump casing which is readily adapted to the change from shallow to deep well pumps and which is designed to operate with maximum efficiency under both conditions of usage.

Various other and more detailed objects and advantages of the invention such as arise in connection with carrying out the above noted ideas in a practical'embodiment will in part become apparent and in part be hereinafter stated as the description of the invention proceeds;-

The invention therefore, comprises a pump of the type that is adapted for either shallow or deep well use and which is characterized as being readily adapted to contain either one,-or a plurality of impellers. Provision is made for regulating the pressure of water that is supplied to the drive pipe, and the various elements are assembled for maximum efliciency in operation.

For a full and more complete understanding of the invention, reference may be had to the a-thickened cylindrical wall ig-nated 24.

following description and accompanying drawings wherein;

Figure 1 is a fragmentary perspective showing the pump in this invention as mounted on a water tank for shallow well use.

Figure 2 is a perspective comparable to Figure 1, bringing out the arrangement when the pump is employed in conjunction with a deep well.

Figure 3 is a vertical section through the main pump casing and parts housed therein. This view is taken about on the plane represented by the line 3-3 of Figure 1.

Figure 4 is a section through the pump casing taken on a plane normal to the showing of Figture 3. This view is taken about on the plane represented by the lines 3-4 of Figure 3.

Figure 5 is a sectional view .comparable to Fig? ure 4 and is taken about on the plane represented by the line 55 of Figure 3.

Figure 6 is a sectional View through one end of the pump casing when the latter is adapted for deep well use. This view is taken about on the plane represented by the line 3-3 of'Figure *2.

Figure 7 is a detailed view in end elevation of the jet device per se.

Figure 8 is an enlarged detailed sectional view through the jet device'per se.

Figure 9 is a view in end elevation of the fitting which is employed to adapt the pump casing to deep well use.-

Figure 10 is a view in side elevation-of the'fitting shown in Figure 9.

Figure 11 is a longitudinal section through the impeller casing being taken about on the plane :represented "by the line I |--l| of Figure 5; and

Figure 12 is another longitudinal section through the impeller casing being taken about on the plane represented by the line 12-42 of Figure 5.

Referring now to the drawings wherein like reference characters denote corresponding parts and first more particularly to Figure 1, a tank is illustrated at .l 0. This tank is intended to receive the water that is pumped from the well by the pumping mechanism of this invention. The tank 1-0 is shown as having feet II which are secured to an appropriate support, such as the platform illustrated at [2, by bolts 13.

Welded to'the upper portion ofthe tank I!) area pair of brackets-M which preferably are of the angle bar construction illustrated. Resting on the brackets I4 are feet l5 of a main casting l6 which constitutes an essential part of the pump assembly. Bolts shown at. H anchor th feet 15 to the brackets 14.

The main casting ,l 6 is formed at one end with IS. This wall is formed with a threaded opening at 9 and a second threaded opening at 23 which issubstantial l-y diametrically opposite to the opening I 9.

When the pump is used for shallowwell purposes,

a plug 2| closes the opening I8.

Thecasting I6 is formed with an end wall 22 which is integrally joined to the thickened wall structure It by a circular wall 23. The end wall 22,"wall 23 and thickened cylindrical wall l8, to-

gether define a main air separating chamber desintegral withthe casting l6. This conduit struc- A passageway 25 is defined by a conduit structure 26 which preferably is cast 4 around a hub 29 that is formed integral with the conduit structure 26.

An inlet or suction chamber 30 is shown as being defined by a circular web 3| that is integral with the casing and which includes a reduced neck as shown at 32. A sleeve 33 integrally. joins this reduced neck 32 to the hub 29. At the bottom, a support 34,'integrally-joins the sleeve 33 'to the wall 23.

That portion of the wall 23 immediately above the suction chamber 30 is thickened and provided with a threaded opening 35 into which is screwed a fitting 36 that is connected to a suction pipe 3'! by elbows 38 and 39 and a conduit 40.

Thehub 2.9-is formed with a circular opening 4| that is co-axial with the main axis of the pump. The sleeve 33 .carriesan inwardly extending flange 42 formed with an opening 43 that is coaxial with the opening 4|. The reduced neck 32 of the suction chamber provides a flat wall 44 having an opening 15 that .is in alignment and coaxial with the openings M' and 43... Theend wall 22 is formed with an opening 46 that is in alignment and coaxial with the openings 4!, 43, and 4 5.

A jet assembly is referred toxin its entirety. by the reference character J. This 'jet assembly J is shown in detail in 'Figures 'l and -.8 and as illustrated inFigure B :may be-assembled within the main pump "casting :withvarious "elements fittinginto the openings 44,43,45, and 46. This assembly J comprises a-carrier plug-41 that is snugly fitted within the opening 46-. The plug 4'! has a head 43 which may-be fastened to the end wall 22 :byb'oltsllB which pass through openings formed :on side extensions of ,thexhead 48.

The plug 41 carries acag-e 50 which in :turn, carries. a ring 51.. Extending inwardly from the ringii, is :a second cage 52 which at its inner end carriesaninternally threaded ring 53. A Venturi tube '54 has one end screwed into the ring53 and its free end is positioned within. the opening 41 fromwhich it :isslightly spaced. A jet nozzle 55 has. its base anchored to the ring 5| 7 and its mouth positioned at the open end of the Venturi'tube 54'.

When the pump is to be used for shallow well purposes, the jet'assemblyJ is positioned within the main casting 16 in the manner depicted in FigureS. In'this position, the :carrierplug 41 closes the opening .46. the ring 5.! :extendsinto the opening .45, and "packing shown. at 56 may be employed to seal this connection; The cage 52 extendsacross the i, constricted neck 32 and the .ring t53 is-snugly fitted in the opening 43.

The Venturi tube 54 is spaced from the'exten-.- sion 33 and extends :there-acrosszto the. opening 41. It will be noted that the cage .58 bridges the gap between the end wall 22- and :the wall 44.

Under normal conditions ofusa-ge; the opening 23 communicates with the tank l0 through the medium of the-conduit shown. at '51.. Thus, communication between the passageway 25 and the tank NJ is established.

The impeller assembly is referred to in its'entirety by the reference character P. This assembly Pwill include as many impeller'casings as there are impellers. Intheform of. the .invention illustrated in the drawings; two impellers are shown as included in'the assembly. Obviously, this numbermay be varied without lieparting from the spirit of the invention.-

The inner impeller casing,'that the one which is housed within" the ring 18, comprises'twocomplemental parts 518. and 59... The onter'impeller I part 58.

. casing is made up of the complemental parts 66 and 6|. It is notable, that the casing part 59 of the inner impeller casing is integrally connected to the casing part 60 of the outer impeller casing. A pressure chamber 62 is defined by the outer casing part 6| and wall structure 63 that is formed integrally therewith. The unit made up of the casing parts 59 and 60 together define an intermediate chamber 64.

' The inner impeller casing that is made up of the parts 58 and 59 together define outer volutes 65 which communicate with the intermediate chamber 64 through the medium of passages 66. Likewise, the outer impeller, made up of the parts '60 and 6|, include outer volutes corresponding to the volutes 65 and which communicate with the pressure chamber 62 through the medium of passages corresponding to the passages 66. The several impeller casing parts 58, 59, 60, and 6| are formed with aligned openings which together delfine passages 61 that establish communication between the pressure chamber 52 and the air separating chamber 24. Screw bolts shown at 9 'serve to maintain the several impeller casing parts in assembled relation. These bolts 9 extend from the inner part 58 of the inner impeller casing, to the outer part 6| of' the outer impeller casing.

The'unit, made up of the impeller casing part 6| and wall structure 63, which is the unit defining the pressure chamber 62, is anchored to an end plate 68 by screw bolts shown at 69. This end plate 68, is in turn, anchored to the main casting l6 by bolts shown at H. A motor is depioted somewhat diagrammatically at H and this motor is anchored to the end plate 68 as indicated at 12. The motor includes a main drive shaft 13 which is driven by the motor in a well known manner.

The unit 6|63 is formed with a hub 14 in which the shaft 13 is journalled. A fluid seal, which is referred to in its entirety by the reference character S, is mounted about the shaft 13 within the unit 6 |-63 and serves to prevent water leaking along the shaft 13. A centrifugal impeller 15 is keyed to the shaft 13 so as to be communicates with the chamber 64.

The shaft I3 extends inwardly through the mouth 16 and its inner end is journalled in the casing part 59 as by the bearing shown at 18. A

' second impeller 19 is anchored to the inner end of the shaft 13 so as to rotate therewith. This impeller '19 is positioned within the inner impeller casing made up of the parts 58 and 59. The impeller 19 is formed with an inlet tube 89 "that extends through the casing part 58 to a point immediately contiguous to the'hub 29. A ring 8| is positioned around the tube 80 and an expansion seal 82 is carried by this ring SI and is interposed between the hub 29 and casin Shallow well operation The condition of the pump for shallow well operation is well brought out in Figures 1 and 3.

31 extends down into the shallow well and'the opening 46 is closed by the carrier plug 41. When the motor H is brought into operation to rotate the shaft 13,- the latter in turn, rotates the impellers l5 and 19. Pressure of the Water is built up through successive stages. Thus, water coming in through the inlet tube 80, is thrown outwardly by the impeller 19 to the volutes 65. From the volutes 65, the water under increased pressure passes through the opening 66 to the chamber 64. From there, the water passes through the inlet 16 through passages 11 of the impeller 15 and thence outwardly to the volutes 65 of the impeller casings 60--6|. Th water under increased pressure, then passes into the pressure chamber 62 through the opening 66. From the chamber 62, the water is passed back into the air separating chamber 24 through the passages 61. This Water which is under increased pressure, now is broken up into divided streams. Part of the water passes through the jet nozzle 55 into the Venturi tube 54, and in so passing, creates a partial vacuum or suction in the suction chamber 30. This draws water up from the well to the suction pipe 31. At the same time, another part of the water passes through the opening 21 into the passageway 25 and thence through the opening 26 to the tank I0.

When the pump is used as a shallow well pump the pressure regulating valve V is not usually necessary. However, there are instances of shallow well operation wherein the pump is working at a limit of its depth as a shallow well pump, and yet the installer does not wish to go to the expense of the deep well set up. In this instance the pressure regulating valve V can be used to close the passage or opening 21 between the air separating chamber 24 and the discharge passage 25 from the pump to secure an increased pressure in the air separating chamber for increased movement of liquid through the pump injector J and thereby obtain the same degree of extension of the depth of the well at which the pump can operate satisfactorily as a shallow well pump.

Deep well mechanism replaced by a fitting that is identified in its entirety by the reference character F. This fitting F is shown assembled in Figure 6 and is illustrated in detail in Figures 9 and 10.

The fitting F comprises an elbow 83 which is connected to a drive pipe 84 by coupling elements 85, 66, and 81. The elbow 83 is formed with an annular flange 88 that is adapted to engage the thickened part of the end wall 22 about the opening 46. This flange 88 is formed with ears 69 which are adapted to be bolted to the end wall 22 in exactly the same way as is the head 48 of the carrier plug.

Extending inwardly from the flange 88 is a neck 90 which is snugly fitted in the opening 46. Extending inwardly from this neck 90 is a cage 9| that carries a closure plate 92 that is snugly received in the opening 45. A packing shown at 93 may be employed to effectively secure this f joint.

It is important to note that only the-suction pipe As brought out in Figure 2, the drive pipe 84 and suction pipe 8'! extend downwardly into the :well' .and'their lower ends areioinedby aY coupling 94.

It is deemed unnecessary to .here enter into a detailed discussion of the: pressure regulating valve V. It sufiices to point out, that this valve includes a sleeve 95 that is threaded into the opening-I9. A valve member 96 is adapted to co,- operate with the opening 21 and is carried by a piston ill that is reciprocally mounted in the sleeve 95. A spring 98 yieldably urges the piston 91 downwardly and normally maintains the valve 95 in'seated or closed position with respect to the opening 21. Effective pressure of the spring 98 may be adjusted by adjusting the position of the spring ffollower '29 that is carried by the sleeve 35.

Deep well operation -Inxdescribingthe, deep well operation, it is;

believed unnecessary to repeat a description of the operation of the impeller mechanism. It suffices to point out that water under pressure is delivered to the chamber 24 by the impeller assembly. This Water under pressure is forced downwardly through the drive pipe 84 to the coupling 94 whereupon, water from the deep well is entrained and forced upwardly through the suction pipe 31. Water from the suction pipe 31 is delivered to the suction chamber 39 and thence through the'constricted neck 32, extension 33, and hub '29 to the inlet Bil of the inner impeller.

When pressure of water in the chamber 213 is substantially great, the valve member 96 is unseated, whereupon, water is permitted to flow through the opening 27 into the passageway 25 and thence to the tank Ii}.

While a preferred specific embodiment of the invention is hereinbefore set forth, it is'to be clearly understood that the invention is not to be limited to the exact constructions illustrated and described because various modifications of these details may be provided in putting the invention into practice Within theopurview of the appended claims.

What is claimed is:

1. In a combination jet-centrifugal pump the combination of, a first casting wall having a hollow central sleeve extending longitudinally therethrough, said sleeve having an opening at. both ends thereof, said wall and sleeve defining therebetween an air separating chamber, an impeller assembly rem'ovably secured to said casting wall and havinga central shaft coaxial with said sleeve, said impeller having a low pressure inlet eye communicating with the opening in said sleeve at one end thereof and .a high pressure outlet chamber, said outlet chamber being connected to said air separating chamber by an elongated passage, said passage extending throughout the length of said assembly and being substantially parallel to said shaft, a second wall means within said chamber forming a passage for connecting said air separating chamber with a fluid reservoir, an orifice in said wall means coniecting said air separating chamber with the last-mentioned passage, said first casting wall having an opening therein axially aligned with said orifice, a pressure regulating valve in said opening with the valve element thereof comprising means for closing said orifice, an inlet chamber including a third wall means communicating \vi-th'the opening in said sleeve .at the opposite end from said inlet eye, said third wall means separating said inlet chamber from said air separating chamber, a suction pipe connected to said inlet chamber for extension into a well,.:a jet assembly-including a. jet nozzle and Venturi tube positioned in said suction pipe for drawing water upwardly in'said suction pipe, and a passageway connecting said air separating chamber to said jet nozzle for forcing water under pressureinto said nozzle.

2. In a combination centrifugal pump adapted for either shallow well or deep well use, the com.-

bination of, a first casting wall having a;hollow central sleeve extending therethrough, said sleeve having an opening at both ends thereof, said wall and sleevedefining an air separating chamber therebetween, an impeller assembly removably attached at one side of said separating chamber and havingan inlet eyeconnected to one opening of said sleeve, said impeller assembly having an outlet pressure chamber, an elongated passage connecting said pressure chamber with said air separating chamber for delivery of fluid under pressure thereto, second-wall means within said air separating chamber forming a second passage for connecting said last-mentioned chamber with a fluid reservoir, a first aperture in said second-wall means connecting said air separating chamber with said second passage, and asec- 0nd aperture in said first casting wall axially aligned with said first aperture and receiving a pressure regulating valve with the valve element thereof comprising means for opening and closingsaid first aperture, .aninlet chamber including a third wall means communicating with the other opening in said sleeve and having 2. smtion pipe connected thereto, said third wall means separating said inlet chamber from said air separating chamber, said pipe adaptedfor extension into a well, said first casting wall including an end wall forming a closure for said air separating chamber and said inlet chamber and an opening in said end wall in alignment with the openings in said sleeve, a flat wall extending inwardly from said end wall and joining said third Wall.

3. In a combinationcentrifugal pump adapted for either shallow well or .deep well use, the combinationcf, a first casting wall having a hollow central sleeve extending therethrough, said sleeve having an opening at both ends thereof, said wall and sleeve defining an air separating chamber therebetween, an impeller assemblyremovably attached at one side of said separating chamber andhaving an inlet eye connected to one opening of said sleeve, said impeller assembly having an outlet pressure chamber, an elongated passageiconnecting said pressure chamber with aid .air separating chamber for delivery of fluid under pressure thereto, second wall means within said air separating chamber forming .a second passage. for connecting said last-mentioned chamber with aiiuid reservoir, a first aperture in said second wall means connecting said air separating chamber with said second passage, an inlet chamber including a third wall means communicating with the other opening in said sleeve and having a suction pipe connected thereto, said third wallmeans separating, said inlet chamber from said air separating chamber, said pipe adapted for extension into a well,.said first casting wall including an end wall forming a closure .for said air separating chamber and said inlet chamber and an opening in said end wall in alignment with the openings in said sleeve, 21. fiat wall extending inwardly from said end wall and joining :saidthird oval-1..

H. HIX WOLFE. EDWARD W HAAS.

(References-on following Page) REFERENCES CITED The following references are of record in th file of this patent:

UNITED STATES PATENTS Number 2,056,553 2,072,033 2,150,799

Name Date Abramson Oct. 6, 1936 Frohnert Feb. 23, 1937 Jacuzzi Mar. 14, 1939 Number 10 Name Date Conery Nov. 23, 1943 Pennington Dec. 19, 1944 Mann May 8, 1945 Rockwell Mar. 30, 1948 Mann Apr. 27, 1948 Parker May 4, 1948 Wolfe et a1 July 5, 1949

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