USRE21893E - Jet pump - Google Patents

Description

A. G. HoRvA'rH Re. 21,893

JET PUMP Sept. 2, 1941.'

s'sheetsheet 1 Original Filed Deo. 22, 19157 v PR/M/lvo AND SUCTON CHA/7551? ,H0055 smv/Cf 6 JET sa/PPL y we y sfPA RA TOR F/TT/NG y WELL CAS/N6 A @isgo o my@ furor/:cys

sept 2, 1941.

wA TEP v A G.' HoRvATH Re; 21,893 l J'r PUMP n original Filed Deo; 22, 1937 s sheets-Sheet 2 Lic TP/c PPfsL/PE Sw/TCH y I f PPM/NG A/v PRESJURE REGULA T01? 5UCT/0/y CHA/.15m

" Y VAL VE JET PUMP JET PUMP 5 Sheets-Sheet 5 Original Filed Dec ,Girar/wey:

.1 n? Q bb m \\J Qwvv W/ /r a N, N G v ND 6 Y T6 0 0 W mM m HH Mm WE 5 HEL 5 N PT U/.U PG M 5/ Slm AReissue-cl Sept. v2, 1941 Anthony G. Horvath,

for reissue July 15,

8 Claims.

This inventionl relates to pumps and in particular to deep well iet pumps. v It is an object of this invention to provide a deep well j et pump system which is simple, economical and efcient. It is a further object of this invention to provide, in such a system, structure particularly adapted for use with well casings o! smalldiameter, such as shallow well pump casings whereby such casings may be utilized and driven to suiilclently deep ground levels to form a deep well.

It is a further object of this invention to provide, in such a system, a jet pump structure particularly adapted for disposition in a well casing in such manneras to utilize the well casing itself or supplying water for operating the jet pump oi the system.

It is a further object of this invention to provide, in such a system, a single pipe jet pump structure particularly adapted for disposition in, or insertion in, a well casing for cooperation 1 therewith to provide a jet pump operative, in connection with a pressure tank pump system i or the like, to lift water from deep wells.

It is a'further object o! this invention to provide a deep well pump system wherein the necessity for the provision, adjacent the well head, of pits or emplacements for the pumping structure is totally obviated and wherein the pump, tank and other operative structure may be located at y a. substantial distance y pairment of the efilciency of -the system.

It is a further object of this invention to provide a deep well pump system wherein casings of small diameter, such a used in shallow wells, may be driven to form a deep well oi a desired depth whereby to obviate the necessity for expensive well boring.

These and other objects and advantages will connection with the drawings.

Inthe drawings:

Figure 1 is a diagrammatic view of a preferred water system installation for deep wells of moderate depth; Figure 2 is a similar found preferable for deep depth;

Figure 3 is a section oi' ariet pump according to the principles of this invention with the weli casing and suction line broken away;

Figure 4 is a section taken on the line Figure 3; and

'Figure 5 vis a section taken on the line 55 of Figure 4.

view of Van installation wells of average UNITED STATES lPATliNT OFFICE.V

JET PUMP Dayton, Ohio, assign'or to The Dayton Pump and Manufacturing Company, Dayton, Ohio, a co original No. 2,196,453, dated April s,

No. lamas, December zz,

1940, Serial No.

rporation of Ohio 1940, Serial Application 345,678

this invention to a deep well. o

well casing which is designated l has the per- According to the principles oi this invention, the only moving part below the ground level is the foot valve of the jet pump. The pump, tank, and other parts of thesystem may be substantially spaced from the well without impairment of the etliciency of the system and may be, therefore, housed at any suitable location with the utmost of convenience in operation, service and inspection regardless of the location of the well. Also, due to the compactness of the jet pump structure, it may be inserted in a well casing of relatively small diameter and provided with a single suction line connection to the inlet oi the.pump whereby the well casing cooperates with the concentrically and interiorly arranged suction line toform a conduit for supplying water downwardly between the well casing and the suction line for operating the jet pump.

"Referring to the drawings in detail and with reference particularly to Figure 1, wherein is illustrated the application of the principles of I moderate depth as, for instance, from twenty to flftydeet, the forated well point 2 screw-threadedly or other wise suitably rigidly attached thereto and they maybe generally located in operative position by driving, and without necessity for boring.

from the well withoutims those customarily 35 appear from the following description taken in '40 50. service line i flexible sealing Rigi'dly secured at casing I is the fitting 3 having a packing gland with packing l, through which extends downwardly the suction line 5 which has the jet pump generally designated i rigidly secured to its lower' end and provided with a flexible sealing ring 1 of rubber, synthetic rubber, or any other suitable materialv which engages and cooperates with the inner wall of the well casing i to forma water- -proof seal.

The suction line, connected to the priming and suction chamber ii of the pump 8 which is suitably driven by the motor N. andwhich pump 8 is connected by means o1 the delivery pipe Il with the tank i2 which provides a support for the pump. The tank outlet i3 is connected to the pressure regulator valve Il which is also connected to the house service line l5. If regulator valve il may be omitted and the tank outlet il may be connected directly to the house 5. The jet supply line IS is connected to the tank outlet i3 and also to the separator iltting 3. The packing l provides air and watertight connection between the well casing i and suction line 5 at the upper end, while the ring lA provides like connection the upper end of the well n as illustrated in Figure 1,'is

desired. the pressure f the lwell casing I.

lsupply conduit for receiving water from the tank I'I and tank I2'is greater than that inthe Jet I2 to the jet supply line I8, which water is forced downwardly by pressure in the direction of the arrowsr in Figure 1 and passes into the mixing chamber of the jet pump through the' Jet to aid the suction of the pump 3 in lifting through the foot valve in the jet pump 8. The

pressure regulator valve.|4 makes possible the' control of the pressure in the house service line I5 within narrow limits and it is, of course, to be understoodthat the pressure in the tank outlet I3 and the jet supply line I6 is substantially greater than. the line I 5.

With this arrangement, the pump 8 builds up iluid pressure in the tank I2, which is transmitted through `the Jet supply line I6 to the conduit formed between the4 suction line 5 and the well casing i, and this iluid pressure, in passing through the jet in the jet pump, acts pressure in the house service upwardly in addition to the suction applied directly by the pump 8 to the suction line 5 to lift water from the interior of the wellpoint 2 and through the priming and suction chamber 8 oi' the pump to 'the pump and thence through the delivery pipe I I of the pipe to the tank I2.

For deep wells oi' average depth, as for depths exceeding 5D feet, it is preferred that the arrangement illustrated in Figure 2 be utilized. The arrangement of the well casing I, well point 2, separator fitting 3, suction line 5 and jet pump S is the same as that illustrated in Figure l. As shown in Figure 2, the suction line 5 is provided with a check valve liaV which enables iiuid to pass upwardly in the suction line 5 to the priming and suction chamber 3 of the pump 8,

while preventing flow in the opposite direction in the suction line 5.

The delivery line iI of the pump is connected directly to the pressure regulator valve I4 which has connection throughv the tank supply line i1 with the tank I2, and the tank I2 is directly connected to the house service line I5. The Jet supply line I6 is connected'by the line I8 with the pump delivery II and also by means of the line I3 with the tank supply line II. `The line i9 is provided with ya check valve Isa by means of which, fluid may llow to .the jet supply line I3 from the line il and whereby return ilow is prevented. The operation of the motor Ill to drive the pump 8 is controlled by the electric pressure switch 23, which is, mounted on the water tank I2 and which is provided with suitable electric connection (not shown) with the operating circuit of the motor I for controlling the motor Iii.

In the arrangement illustrated in Figure 2, pressure differential between the pump delivery II and the tank supply line I1 is controlled by the valve I4, and iluid is normally supplied from .pump delivery il through line I8 and jet supply line I6 to the space between the exterior of the suction line and the interior of the well casing I and thence through the jet pump 3,

where it aids the suctionA applied by the pump upon the suction line 5 in lifting water from the interior of the well point 2. The check 10 is formed of a plurality of lengths or sections of water from the interior 'of the well point 2 gether by means of suction line coupling memthe lowermost section 5 of the suction line is :0 screw-threaded end portion 23 with an annular ...5 duced interior portion /threaded upper end 23 tion 5 and the upper end ofthe casting y22 is supply line' I8, the check valve I9a permits uid to flow from the tank supply line I'I through the line. IS to the jet supply line I6, where it is` additive to the fluid pressure supplied through line I3 to the jet supply line I5.

The details o1' the jet pump illustrated in Figures 1 and 2 are shown in Figures 3. 4 and 5. As shown in those figures. the suction line 5 piping, also designated 5, which are internally screw-threaded at their ends and secured tobers 2|. To the lower screw-threaded end of screw-threadedly attached the exteriorly screwof the casting 22, which forms the main body of the jet pump.A This casting 22 is providedv adjacent and below the thrust shoulder 24 which is adapted for abutment with the extreme end of the lowermost sec.

provided with a frusto-conicai downwardly re-.

which leads to'v the throat 26 of the jet pump. Immediately below the throat 26 is the mixing chamber 2 1,

An anunlar transverse wall 23 extends Afrom side to side ofthe lower portion of the casting .m 22 and joins the sides of the casing, and inthe 1 i) the surrounding upper portion of Ithis wall is a screw-threaded aperture 29 in which is screw-threadedly secured the jet 30 which provides communication between the mixing chamber 21 and the transverse channel formed by the'annular wall 28,

which'transverse channel communicates with the Space between the exterior of the walls of the casting 22 and the interior of the wall ol the well casing I.- The annular wall 28 separates portion of the casting 22 into two conduits 3i (Fig. 4) for supplying water upwardly to the mixing chamber 2l. The extreme'lower end of the casting 22 is screw-v threaded at 32 and receives the upper screw- 4,-, threaded portion 33 of the casing anchor member 34 which has the foot valve seat 35 formed at its upper end and the valve stem guide 38 formed therein below and in spaced relation to the seat 35 and provided with a central bore 5o or aperture 3l for receiving the stem 38 of the foot valve which has the disk 39 thereof formed of any suitable material and interposed between an upper washer member 40 and a lower washer member 4I which are clampingly engaged there- 5.-, with by means of the head 42 of the stem 38 and the nut 43 which is disposed on the screwthreaded upper portion of the stem 38.

At its lower end, the stem 38 is provided with a suitable transverse pin 44 which supports the co thrust washer 45. The spring 46 has at its upper :n which is in abutment with of the casting 22.

end in engagement with the wall 35 and its lower end in engagement with the washer in such manner as normally to retain the foot valve disk 39 on the seat 35 to preventflow of fluid downwardly through the foot valve. Below the wall 36, the casing anchor member 34 is provided with an outwardly directed annular flange for engaging the lower end of the ilexible sealing ringi 'I which has its upper end engaged by a washer 4l the extreme lower end Below the above describedv annular flange, the casing anchor member 34 is provided with a loopshaped extension 4B, to one side or which the cas'- ing anchor spring 49 is secured at either end by means of a suitable rivet 50. The casing anchor spring 49 is in the form of a ilat 'spring member suitably bowed for cooperation withy the member 48 at the interior wall of the well casing I to prevent relative rotation therebetween.

The direction of ilow of iiuid is shown in Figures 3 and 5 and it will be seen that fluid under pressure iiows downwardly between the interior wall of the well casing I and the exterior wall of the casting 22 through the annular wall 28 and thence upwardly through jet 30 to the Vmixing chamber 21 (full lines, Fig. 5). This upwardly directed water spreads outwardly from the jet 30 ure 3, and this causes a partial vacuum or reduces the pressure above the disk 39 of the foot valve so as to cause the foot valve to move up wardly, whereby water flows upwardly through the foot valve port into the mixing chamber, and, with the water which has passed thereinto from the iet 30, it passes upwardly through thethroat 26 and the frusto-conical portion 25 and thence upwardly through the suction line 5 under suction applied to the suction line 5 by the pump 8.`

jet 30' is, of course,radditive to the upward force of suction applied through the suction line 5l by the pump 8.

When the' pump is operating and suction is applied through the suction line 5, the `foot valve disk 3S is raised from its seat' whereby to permit upward ilow of water from the well point 2 into the mixing chamber of the jet pump E. However, as soon as the pump 8 ceases to'exert suction through the suction linev5, the foot valve disk 39 is seated to prevent downward fiow oi water through the foot valve port and thus to prevent loss of prime in the pump system.

While the pump illustrated is of the motor driven reciprocatory type, it is, of course, to be understood that various other known forms of pumps may be applied in the same manner and furthe same purpose. Furthermore, while the pump 8, in both of the arrangements illustrated in Figures l and 2, has been shown as `closely disposed with respect to the head of the well or the y upper end ci the well casing l, they may be quite remotely disposed with respect any wise appreciably affecting the efiiciency of the system. f

The extreme compactness of the jet pump 6, and its arrangement with the suction line 5 concentrically of the well casing I, permits the use of well casings of such small diameter as have hitherto been used entirely in The ability to use such small well casings makes it possible to drive wens of such depth as hitherto necessitated expensive and laborious Well boring operations. While it was hitherto possible to drive such casings to suchy depth as to secure deep wells, it was impossible to lift water from such depth by any known apparatus which could be disposed within casings of such small diameters as, for instance, the most common size of shallow well casing of 1%" diameter. The ability to use casings of such small diameter appreciably reduces the cost of deep wells due to the reduction oi cost required for the provision'of suitable well casings.

In deep weil 1systems constructed according to the principles of this invention, the only part below the ground level which might be considered a moving part is the foot may not, in the strictest sense of Vthe word, be called amoving part, because it merely opens to form a spray indicated by dotted lines in Fig- The upward forceof the Water passing through thereto without in shallow driven wells.4

f hend within my valve, although this part when the operation o! the pump l .beglns,'and closes to prevent down flow of water therethrough when the suction in the suction.` line 5 is suiiiciently reduced to permit such down ilow' of water through the foot valve of the jet pump 5. One of the important features oi the invention is the use oi the well casing I, in cooperation with the suction line 5, concentrlcally arranged therein, to V form a conduit for supplying water downwardly for operation of the jet pump.

the invention Another feature oi 1s the provi- .sion of structure which is. suiilciently compact to in deep wells, oi well casing permit them to be make possible the use, of .such small diameter as will 1 driven into the ground to sufiicient depth without the necessity for boring which is a necessary and expensive procedure where well casings of great,- er diameter must be provided. lIn its broader aspect, this invention consists'in the provision of a methodand apparatus for the production of deep well operation by the use of shallow well pump structure.

It is, of course, to be understood that the above-described structure is merely illustrative of the manner in which the principles oi my invention may be utilized and that I desire to compreinvention such modifications as come within the scope of the claims and the invention. Y i

Having thus fully described my invention, what I claim as new and` desire to secure by Letters Patent is:

l. In a. deep well pump system,

a pump, a

said pump, a. pressure regulator valve connected to said delivery line, a tank supply line connected to said pressure regulator valve, a water tank connected to said tank supply line and to a house service line, jet pump means including a suction line and jet pump supply conduit means, means including a check valve connecting said suction line with the suction of said pump, means directly connecting said jet pump supply conduit means with said pump delivery line,y and means. includ- 'mg a check valve connecting said tank supply line with said iet pump supply conduit means.

2. In a deep well .pump system, a motor driven pump having a suction and a delivery, a pump delivery line connected to the delivery of said pump, a pressure regulator valve connected to said pump delivery line, Ya tank supply line connected to said pressure regulator vaive, a water tank connected to said tank supply line and to a house. service line, pressure responsive pump motor control switch means on said tank, `iet pump means including a ysuction line and surrounding jet pump supply` conduit means, means including a check valve connecting said suction line directly with the suction of said pump, means directly connecting said jet pump supply conduit means with said pump delivery iine, and vmeans including a check valve connecting said tank supply line with said jet pump supply conduit means.V

3. In a deep well system, a well casing,` a jet pump in said well casing,-a suction line in said well casing connected to said jet pump, sealing means forming a jet pump supply conduit between said well casing and said jet pump and suction line, and means for applying suction to said suction line 'and fluid pressure to Asaid jet pump supply conduit lcomprising a uid pressure means including a check valve connecting the suction of said pump to said suction line, a

' last-named connection with said jet pump supsaid tank, a service delivery line connected to sure pump having a suction conduit and a delower chamber of said well casing into the upper nected to said tank, a well casing, a suction pipe with the delivery side oi' said, pump, fluid now onV the exit side of said pressure regulator valve so pressure pump delivery line, said casing forming said pump, apressu-re regulator valve connected conduit and a delivery conduit, means connectto said pump delivery line, a. water tank coning said suction pipe with said pump suction connected to a house service line, a connection beduit, a tank connected to said pump delivery contween said tank and said pressure regulator valve, duit, a pressure regulator valve interposed in said means including a. check valve connecting said 5 pump delivery conduit between said pump and ply conduit, and means directly connecting said said tank,l and a pair of Jet pump supply lines pump delivery line Vwith said jet pump supply connecting said upper well casing conduit with conduit. y said pump delivery conduit on opposite vsides of 4. In a deep well system, a Well casing, a jet w said pressure regulator valve. pump in said welll casing, a suction line in said 7. In a deep well pump system, a fluid pressure well casing connected to said let pump, sealing pump having a suction and a delivery line, a

means forming a jet pump supply conduit beservice line connected to the delivery side of said tween said well casing and said jet pump and pump, iiuid ilow regulator means connected to suction line, and means i'or applying suction to 15 said delivery line and communicating with said said suction line and fluid pressure to said jet service line, a well casing. sealed at the top formpump supply conduit comprising a motor driven ing an upper chamber, a jet pump located near pump, means including a check valve connecting the bottom of said casing, a. suction line in said the suction of said pump to said suction line, a well casing connected to said jet pump and the pump delivery line connected to the delivery of 20 suction side oi' said fluid pressure pump, means said pump, a pressure regulator valve connected comprising a conduit and including said upper to said pump delivery line, a water tank conchamber connected with said delivery line on nected to a; house service line, a pressure responeither side or said iiuid regulator means and the sive pump motor control switch connected to said inlet side of said jet Dump for supplying fluid water tank, a connection between said tank and 5 under pressure to operate said jet pump, means said pressure regulator valve, means 'including a. comprising a perforated well point communicatcheck valve connecting said last-named nonnecing with said well casing, means i'or sealing the tion with said jet supply conduit, anc. means lower part of said well casing below said jet pump directly connecting said pump delivery line with so as to divide the well casing into an upper and said Jet pump supply conduit. 3U lower chamber, and a toot valve below said jet In a deep Well pump system, a liquid prespump for controlling the ilow of iluid from the livery conduit, a tank connected to the delivery chamber and to said jet pump. conduit o! said pump, pressure regulator valve 8. In a deep well pump system, a iluid pressure interposed in said delivery conduit between said .35 pump having a suction and delivery line conpump and said tank, a service delivery line connected therewith, a service-line, communicating in said well casing, a sealing member between regulator means connected to said delivery line said well casing .and said suction pipe dividing and communicating with said service line, a, well said Well casing into upper and lower chambers, 4( casing in which is disposed near the bottom a jet a jet plunp in said suction pipe communicating pump means, a suction line in said casing and with said upper well casing chamber and disconnected to said jet pump and the suction side chargingdnto said suction pipe, said suction pipe of said iluid pressure pump, means comprising a being connected to 'the suction conduit of said conduit and including the upper chamber of said fluid pressure pump above said jet pump land to 4- casing connected with said delivery line on either said lower well casing chamber below said iet sidey of said ilow regulator means and the inlet pump, a foot valve between said suction pipe and side of said jet pump, whereby iluld under pressaid lower well casing chamber, and means consure to operate said jet pump may be supplied necting said fluid pressure pump delivery conduit from the service line or directly from the iiuid with said upper well casing chamber. a liquid passageway for the operation oi' said Jet 6. In a deep well pump system, a well casing, pump, means comprising a perforated well point a suction pipe in said well casing, sealing means communicating with the bottom portion of said between said well casing and said suction pipe well casing, and means for sealing the lower part dividing saidv well casing into upper and lower 55 of said well casing below said Jet pump so as to well casing chambers, a jet pump within said divide the well casing into an upper and lowe suction pipe connected to said upper well casing chamber. chamber, a iluid pressure pump having a suction ANTHONY G. HORVATH.

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