US2972963A

US2972963A - Combination pump housing and mounting means

Info

Publication number: US2972963A
Application number: US700358A
Authority: US
Inventors: William H Hamilton
Original assignee: Motor Products Corp
Current assignee: Motor Products Corp
Priority date: 1957-12-03
Filing date: 1957-12-03
Publication date: 1961-02-28
Anticipated expiration: 1978-02-28

Description

Feb. 28, 1961 w. H. HAMILTON 2,972Q963 COMBINATION PUMP HOUSING AND MOUNTING MEANS Filed Dec. 3, 1957 COMBINATION PUMLP HOUSING AND MOUNTING MEANS WilliamH. Hamilton, Chicago, Ill., assignor, bymesne assignments, to Motor Products Corporation, Detroit, Mich., acorporation of New York Filed Dec. 3, 1957,!Ser. No. 700,358"

2 Claims. (Cl. 103219,)

This invention relates to a combination pump housing and installation and particularly -to a .combination pump housing .and mounting meansfor a deep-well installation orsystem.

A deep-well installation referred'to herein is of the type wherein the source of liquid, usually water, to be pumped is too deep .in the ground for a standard, .or shallow well type, pumptoraise it to thesurface of. the ground and wherein a portion of theliquid pumped by the pump is. returned under pressure .as drive liquid to a venturi device disposed in the wellcasing at approximatelythe depth from which astandardpump. canraise the liquid .to .the surface of. the ground. The venturi device provides va jet .action to raise the. liquid from its. source to .a position from which the pump may raise the liquid to the ground level where .it maybe delivered to astorage tank or system.

In some deep-well installations, it has beenv the practice to provide a pump, supporting meansitherefor, a suctionpipe having a venturi device disposedthereinat the proper depth, a liquid return pipe: extendingalong sidethesuction pipe .to .deliver "drive liquid to the :venturi device, and :a series of connectors, elbows, fittings, etc., to properly connect the .two'pipes to each :other and to spaced openings in. the pump housing. Such .an .installation is relatively difiicult and time consuming to install and requires .a large number of parts. Some: improvement has been made in such installations .by '31. ranging .the suctionpipe concentrically. within a :casing. member with the drive liquid beingdeliveredto the venturi device through an annular space defined between the suction pipe and the casing member. But evenwith such an improved installation, it is, necessary to provide a seriesof joints, elbows, fittings, etc., for connecting the two pipes extending in side-by-side relationship from the independently supported pump respectively to the suction pipe and the annular space betweenthe suction pipe andthe. casing at or above the ground level, thus .still resulting in .a relatively complicated and time consuming installation problem.

It. isageneral object of this invention to prov-idea newrand improved combined pump housing and mounting means for a deep-well installation which-overcomes the above disadvantages and provides a smooth, even pumping operation.

One of the objects of the invention is to provide a new and improved combination pump housing and mounting means. for a 'pumping system having a concentrically arranged suction pipe and casing which requires a minimum of fittings, eliminates separate supporting means for thepump and motor, is very simple to install, and which therefore is both economical to produce and install.

A moredetailed object of the invention is to provide such a combination pump housing and mounting means wherein the pump and motor are supported directly on the upper end of the well casing with the pump discharge chamber being in direct communication with the .annularspace between the concentric suction pipe and cas- 2].. ingto direct: a portionof the pumped-liquidto the venturi device andwiththe upper end. of the concentric inner suction .pipepassing upwardly through the pump 'discharge. chamber into direct. communication with. the pump impeller. chamber .to .provide a liquid inlet thereto.

Certain other. objects ofthe invention will, in part, be obvious, and will in part appear hereinafter; Fora more complete. uuderstandingofthe .nature and scope of the invention referencemaynow be had to the accompanying drawings wherein:

Fig. .1 .isa side.elevationalview, partially in:..ve1tical section, .of adeep-well pump installation utilizing a prefeired embodiment.v of the invention;

Fig. 2 is .anenlargedhorizontal sectional view taken generally along line. 2.2 .of.,Fig.-. 1; and

Fig. 3 fisa verticalsectional detail view takengenerally alongline. v3W3 of Fig. 2.

'I'hepumping. systemshown in.,Fig. 1 includes :a casing member .10 .andan. inner, smallersuction pipe 12 disposed concentrically therein .so. as. to provide anannular space, 14 between .the .outer surface rofhthe .suction pipe. .12 and .the inner. .surfaceofrthecas-ing 10.. The.

casing is driven intothe groundinto communication witha well .or source .of liquid, tobe pumpeduand .the suctionpipe .12. is. inserted therein- A venturidevice-16 o'flknown, type .associated .with..the suction -pipe.12 is.

adapted. to. bedisposedat a depth from-which liquid may be, pumped'to the. ground-level Thesuctionpipe -12.is also .provideid-with double .cup. leathers 18 .disposed .belowthev .venturi device .16. to provide .a -seal. :betweenthe .suc

tion pipe 12 and the. casing .10 so .to preventathe diive. liquid from. escaping-.-.downwardly intothe well, Astrainer 2.0 disposed at the. lower. end 20f .the suction; pipe -12 acts to,.str.ain impurities from the. liquid pumped.

from the well.

A' combination pump housing .and: mounting. means;-

generally indicated by a reference numeral 22, includes a generally cylindrical housing.,.;24 closed ,at. the :topby a.

fitting-.25 and havinga generally. horizontal Walton-baffle 26 formed thereinyadap-ted.todivide. the .housing..24 into: an upper pumpimpeller chamber 28 .and a lower pump. discharge chamber 30, the horizontal wall-.26 acting as.

the. lower Wall of -.the. pump impeller chamber- .28, and as the upper wall of .the pump discharge chamber.3.0.- The. two. chambers 28 'and30 are suitablyinterconnected-:by, fluid passages 31. A pump motor located within a hous-,

ing 32 is adapted to be supported on .top: of the. housing 24. The upper fitting of the. .pumphousing. 24:tapers.- upwardly and inwardly to define-anopening..34-throughwhich passes a -drive shaft 36 of the pump. motor which is operably connected or coupled to a rotatable pump.

impeller 38 of known design disposed in the pump impeller chamber 28. A sealing member 39 ,isprovided between the drive shaft .36 and the opening34 in the; fitting The lower integral. portion 40 .of the. housing 24 is coni: cally shaped and tapers. downwardlyfland inwardlytermb.

nating in a depending neck portion 42 having avertically extending bore 44 formed therein. The generally horizontal wall 26. is provided with a depending .neck portion.- or circumferential flange 46 having aninternally threaded bore 48 formed therein which is coaxial with and smaller 1 in diameter than the bore 44-formed in the depending.

Referring particularly to Fig. 3,a pair of annular stepped

groovesor counterbores

50 and 52 are formed on the inner surface of thelower end of the bore 44 in the depending. neck portion 42 ofthe housing24. Thea;

upper annular groove 50 is smaller in diameter than the annular groove 52 and defines an annular shoulder 54 adapted to fit over and rest on the upper end of the well casing to support the combination pump housing and mounting means 22 thereon. The suction pipe 12 extends in spaced relation upwardly through the bore 44 in the depending neck portion 42 so that the pump discharge chamber 30 is directly in communication with the annular space 14 formed between the suction pipe 12 and the casing 10.

In order to provide a liquid right seal between the cas-. ing 10 and the depending neck portion 420i the housing 24, a sealing gasket 56 is disposed in the larger annular groove 52. An annular collar member 58 disposed about the casing 10 has an inner annular groove 60 formed in its upper end adapted to receive a portion of the annular sealing gasket 56. A series of vertically extending holes 62 are formed in the collar member 58 in alignment with aseries of tapped holes 64 formed in the depending neck portion 42 of the housing 24. Bolts 66 extend through the-holes 62 in the collar member 58 and into the holes 64 in the depending neck portion 42 so as to draw up the collar member 58 toward the depending neck portion 42 of the housing 24 and thus maintain the annular sealing gasket 56 in sealing engagement between the casing 10 and the depending neck portion 42 of the housing 24.

A discharge pipe 68 is threaded into a port 69 in the side of the housing 24 opening into the pump discharge chamber 30 to deliver pumped fluid through a pressure operated check valve 70, having a pressure gauge 72, andv then through a pipe or conduit 74 to a suitable storage tank or distribution system (not shown). The usual conduit or tubing 76 is connected between the pump inlet and an air volume control associated with (the storage tank. The'pump end of the conduit 76 is connected toa port 78 formed in the depending neck portion 46 of the horizon-' tally extending wall 26. A vent tube 80 is also provided leading to the valve 70 from the pump impeller chamber 28 to prevent an air lock in the system.

Installation of this pumping system is very simple and may be accomplished in a matter of a few minutes after the casing 10 is in place. The collar member 58 and the sealing gasket 56 are slipped over the casing 10 whereupon the suction pipe 12 is inserted in the casing 10 and the upper end is tightly screwed into the threaded bore 48 in the depending neck portion 46 of the horizontally extending wall 26. The pump housing 22 is then lowered until the shoulder 54 rests on the upper end of the casing lfl'whereupon the bolts 66 are tightened into the holes 64 to draw up the collar member 58 toward the depending neck portion 42 of the housing 24 and compress the gasket 56 into liquid-tight sealing engagement. It is then a simple matter to connect the pipe 74 to a storage tank or distribution system and to properly connect up the tubings 76 and 80.

In operation, after priming and energizing the motor to rotate the impeller 38, liquid is drawn upwardly through the suction pipe 12 and into the pump impeller chamber 28 from which it is pumped as a result of rotation of the impeller 38 through the fluid passages 31 into the pump discharge chamber 30'. The valve 70 will not open until the pressure in the pump discharge chamber 30 has been built up to the pressure (e.g. lb./sq.in.) for which the valve 70 has been set. Therefore until this pressure has been built up in the pump discharge chamber 30, all of the liquid pumped into the chamber is forced downwardly through the annular space 14 to the venturi device 16, this liquid being known as drive liquid. The jet action of the fluid pumped through the venturi device 16 acts in the usual well known manner to raise liquid from the liquid source to a position in the suction pipe 12 wherein it may be raised by the action of the pump impeller 38 to the ground surface and pumped into the pump discharge chamber 30. After the pressure has been built up sufliciently in the pump chamber 30,-the valve 70 will open and aportion of the fluid pumped will be delivered to the storage tank or distribution system with the remainder of the fluid pumped passing downwardly through the annular space 14 to provide drive liquid for the venturi device 16.

It will be understood that certain changes may be made in the construction or arrangement of the combination pump housing and mounting means disclosed herein without departing from the spirit and scope of the invention as defined in the appended claims.

I claim:

1. A combination pump huosing and mounting means i for wholly supporting a pump on the upper projecting end of an upright well casing and for supporting a substantially smaller suction pipe concentrically within said casing, said pump housing comprising, an upper cylindrical portion, a lower inverted conical portion depending, concentrically therefrom with the largest diameter of said conical portion being substantially equal to the diameter of said upper cylindrical portion, a baflle enclosing the top of said cylindrical portion, said baflle having an impeller chamber in the central portion and there being an internally threaded circumferential flange depending from the center of said impeller chamber down into said inverted conical portion and terminating in spaced relation therein, a depending neck portion on the bottom of said conical portion being in approximately concentric align ment with said circumferential flange, said neck portion end of said upright well casing for wholly supporting said pump housing thereon, the inner suction pipe adapted to extend in spaced relation through said neck portionand' through said inverted conical portion with its upper end having a double counterbore so as to provide an inner annular shoulder and an outer annular shoulder, said inner annular shoulder being adapted to fit over the upper i suction pipe, a sealing gasket disposed against the outer annular shoulder of said double countenbore of said neck portion, and a collar disposed on the well casing and adapted to be drawn up toward said neck portion to compress said gasket against said outer annular shoulder to 4 at thebottom of said conical portion having a vertically provide a fluid-tight seal between said neck portion and the well casing.

2. A combination pump housing and mounting means I for wholly supporting a pump on the upper projecting end 1 of an upright well casing and for supporting a substantially smaller suction pipe concentrically within said casing, said pump housing comprising, an upper cylindrical portion, a lower inverted conical portion depending concentrically therefrom and terminating in a depending neck extending bore formed therein, a baflle enclosing the top of said cyclindrical portion, said baifle having an impeller chamber in the central portion and there being an internally threaded circumferential flange depending from the center of said impeller chamber into said inverted conical portion and terminating in spaced relation therein, said internally threadedcircumferential flange being substantially in coaxial alignment with said bore in said depending neck, fluid passage means extending between the impeller chamber and a pump discharge chamber defined by said baflle and said inverted conical portion, the suction pipe being adapted to extend in spaced relation through said bore and to have its upper end tightly secured in said internally threaded circumferential flange to provide a fluid inlet to the impeller chamber, means defining two stepped annular grooves formed in the lower end of said bore in said depending neck with the uppermost groove having the smaller diameter and definaevaaee ing an annular shoulder adapted to rest on the upper end of the upright well casing to wholly support the pump housing thereon, an annular sealing gasket adapted to be fitted in the other groove, and a collar fitted over the well casing and adapted to be drawn up toward the lower end of said depending neck to compress said gasket into fluid-tight sealing engagement between the well casing and a second annular shoulder defined by the other groove in said depending neck of the pump housing, said structure providing a path for a portion of the pumped fluid leading directly from said pump discharge chamber downwardly between the concentric suction pipe and well casing to a venturi device disposed in a lower portion of the well casing, the remainder of the pumped fluid adapted to be delivered from said pump discharge chamber to a storage tank or distribution system through a pressure operated check valve.

References Cited in the file of this patent UNITED STATES PATENTS 1,739,803 vSchlegel Dec. 17, 1929 2,077,213 Conery et al. Apr. 13, 1937 2,240,782 Jacobsen May 6, 1941 2,525,772 Conery Oct. 17, 1950 2,529,062 Williams Nov. 7, 1950 2,623,466 Tinker Dec. 30, 1952