US2196453A

US2196453A - Jet pump

Info

Publication number: US2196453A
Application number: US181188A
Authority: US
Inventors: Anthony G Horvath
Original assignee: Dayton Pump and Manufacturing Co
Current assignee: Dayton Pump and Manufacturing Co
Priority date: 1937-12-22
Filing date: 1937-12-22
Publication date: 1940-04-09
Anticipated expiration: 1957-04-09

Description

April 9, 1940- A. G. HoRvATH 2,196,453

JET PUMP Filed Dec. 22, 1937 3 Sheets-SheelI 1 PRIN/NG AND SUC 7/0/V CHAMBER AHoz/5E smv/cf 6 5 5- I `sz/c 770/1/ L//vf JET UPP/.y wa 3 4 afm/m TOR NTT/,N6

l I f r f WELL CAS/NG JET PIJ/VPl FLEX/BL .5ML

April 9, 1940. A. G. HoRvATH JET PUMP 3 Sheets-Sheet 2 Filed Dec. 22, 1937 JET 'JUPPYLY L/NE H0055' JERY/CE L/NE WELL CAS/NG JET PUMP FL [5X/BLE SAL April 9, 1940. A. G. HORVATH JET PUMP Filed Dec. 22, 1937 3 Sheets-Sheet 5 Patented Apr. 9,V 19110` PATENT OFI-ics JET PUMP Horvath, Dayton, Ohio, assignor to Pump and Manufacturing Company, Dayton, Ohio, a corporation of Ohio Anthony G.

The Dayton Application December ZZ, 1937, Serial No. 181,188

6 Claims.

This invention relates to pumps and in particular to deep well jet pumps.

It is an object of this invention to provide a deep well jet pump system which is simple, economical and efiiclent.

It is a further object of this invention to provide, in such a system, structure particularly adapted for use with well casings of small diameter, such as shallow well pump casings whereby m such casings may be utilized and driven to suiiiciently 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 manner as to utilize the well casing itself for supplying water for operating the jet pump of 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 therewith to provide a jet pump operative, in connection with a pressure tank pump system or the like, to lift water from deep wells.

It is a further object of 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 a substantial distance from the well without impairment oi the efficiency of the system.

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

These and other objects and advantages will appear from the following description taken in connection with the drawings.

In the drawings:

Figure l is a diagrammatic view of a preferred water system installation for deep wells of moderate depth;

Figure 2 is a similar view of an installation found preferable for deep wells of average depth;

Figure 3 is a section of a jet pump according to the principles of this invention with the well casing and suction line broken away;

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

Figure 5 is a section taken on' the line 5-5 of Figure 4.

According to the principles of 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 the vsystem may be substantially spaced from the well without impairment of the efficiency' of the system and may be, therefore, housed at any suitable location with the utmost of convenience in operation; service and inspection regardless of theplocation of the well. Also, due to the compactness of the jet pump structure, it may beinserted in a well casing of relatively small diameter and provided with a single suction line connection to the inlet of the pump whereby the well casing cooperates with the concentrically and interiorly arranged suction line to form a conduit for supplying water downwardly between the well casing and the suction line for operating the Ljet pump.

Referring to the drawings in detail and with reference particularly to Figure 1, wherein is illustrated the application of the principles of this invention to a deep well of moderate depth as, for instance, from twenty to fifty feet, the well casingwhich is designated I has the perforated well point 2 screw-threadedly or otherwise suitably rigidly attached thereto and they may be gener ally located inoperative position by driving, and Without necessity for boring.

Rigidly secured at'the upper end of the well casing I is the iitting 3 having a packing gland with packing 4, through which extends downwardly the suction line 5 which has the iet pump generally designated 6 rigidly secured to its lower end and provided with a exible sealing ring 'I REISSUED SEP 2 194i of rubber, synthetic rubber, or any other suitable i material which engages and cooperates with the inner Wall of the well casing I to form a waterproof seal.

The suction line, as illustrated in Figure l, is connected to the priming and suction chamber 9 of the pump B which is suitably driven by the motor I0, and which pump 8 is connected by means of the delivery pipeII with the tank I2 which provides a support for the pump. The tank outlet I3 is connected to the pressure regulator valve I4 which is also connected to the house service line I5. If desired, the pressure regulator valve I4 may be omitted and the tank outlet I3 may be connected directly to the house service line I5. The jet supply line I6 is connected to the tank outlet I3 and also to the separator iitting 3. The packing 4 provides air and water tight connection between the well casing I and suction line 5 at the upper end, while the flexible sealing ring 1 provides like connection between the `iet pump 8 and the lower end of the well cas'- pump 8 in lifting water from the interior of thev well point 2 through the foot valve in the jet pump 6. The pressure regulator valve I4 makes possible the controlof the pressure in the houseservice line I'within narrow limits and it is, of

- course, to be understood that the pressure in the tank outlet I3 and the jet supply line I6 is substantially greater than the pressure in the house service line I5.

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 the suction line 6 and the well casing I, and this iluid pressure, in passing through the jet in the jet pump, acts 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 well point 2 and through the priming and suction chamber 9 of the pump to the pump and thence through the delivery pipe II of the pipe to the tank I2.

For deep wells of average depth, as for depths exceeding 50 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 6 is the same as that illustrated in Figure 1.

As shown in Figure 2, the suction line 5 is provided with a check valve 5a which enables fluid to pass upwardly in the suction line 5 to the priming and suction chamber 9 of the pump 8, while preventing ow 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 through 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 I9 with the tank supply line I1. The line I9 is provided with a check valve I9a by means of which, uid may flow to the jet supply line I6 from the line I1 and whereby return ilow is prevented. The operation of the motor I8 to drive the pump 8 is controlled by -the electric pressure switch 20, 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 I0 for controlling the motor Ill.

'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 II through line I8 and jet supply line I6 to the space between the exterior of the suction line 5 and the interior of the well casing I and thence through the jet pump 6, where it aids the suction applied by the pump upon the suction line 5 in lifting water from the interior of the well point 2. The check valve I9a prevents ilow of iluid from the jet supply line I6 to the tank supply line I1, but whenever the pressure in the tank supply line I 1 and tank I2 is greater than that in the jet supply line I6, the check valve I9a permits uid to flow from the tank supply line I1 through the line I9 to the jet supply une mwhere it is addmvetothe mudl i pressure supplied through line I8 to the jet supply The details of the jet pump illustrated in Figures 1 and 2 are shown in Figures 3, 4 and 5. As shown in those gures, the suction line 5 is formed of a plurality of lengths or sections of piping, also designated 6, which are internally screw-threaded at theirends and secured together by means ot suction line coupling members 2I. To the lower screw-threaded end oi' the lowermost section 6 of the suction line is screwthreadedly attached the exteriorly screw-threaded upper end 23 of the casting- 22, vwhich forms the main body of the jetpump. 'Ihis c asting 22A is provided adjacent and below the screw-threaded end portion 23 with an annular thrust shoulder 24 which is adapted for abutment with the extreme end of the lowermost section 5 and thc upper end of the casting 22 is provided with a frusta-conical downwardly reduced interior portion 25 which leads to the throat 26 of the jet pump. Immediately below the throat 26 is the mixing chamber 21.

An annular transverse wall 28 extends from side to side of the lower portion of the castingv 22 and joins the sides of the casing, and in the upper portion of this wall is a screw-threaded apertu're 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 of the well casing I. Ihe annular wall 28 separates the surrounding portion of the casting 22 into two conduits 3l (Fig. 4) for supplying water upwardly to the mixing chamber 21. The extreme lower end of the casting 22 is screw-threaded at 32 and receives the upper screw-threaded portion 33 of the casing anchor member 34 which has the foot valve seat 36 formed at its upper end and the valve stem guide 36 formed therein below and in spaced relation to the seat 35 and provided with a cen tral bore or aperture 31 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 therewith by means oi' the head 42 of the stem 38 and the nut 43 which is disposed on the screwthreaded upper portion of the stem 38. l

At its lower end. the stem 38 is provided with a suitable transverse pin 44 which supports the thrust washer 45. The spring 46 has its upper end in engagement with the wall 36 and its lower end in engagement with the washer 45 in such manner as normally to retain the foot valve disk 39 on the seat 35 to prevent flow of ud 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 exible sealing ring 1 which has its upper end engaged by a washer 41 which is in abutment with the extreme lower end of the casting 22.

Below the above described annular flange, the casing anchor member 34 is provided with a loop-shaped extension 48, toone side of which the casing anchor spring 49 is secured at either end by means of a suitable rivet 50. 'I'he casing anchor spring 49 is in the form of a ilat spring member suitably bowed for cooperation with the member 48 at the interior wall of the well casing I to prevent relative rotation therebetween.

The direction of flow of fluid is shown in Figures 3 and 5 and it will be seen that iiuid under* pressure flows 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 mixing chamber 21 (full lines, Fig. 5). This upwardly directed water spreads outwardly from the jet 30 to form a spray indicated by dotted lines in Figure 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 upwardly, whereby water flows upwardly through the foot valve port into the mixing chamber, and, with the water which has passed thereinto from the jet 30, it passes upwardly through the throat 26 and the frusto-conical portion 25 and thence upwardly through the suction line5 under suction applied to the suction line 5 by the pump 8. The upward force of the water passing through jet 30 is, of course, additive to the' upward force of suction applied through the suction line 5 by the pump 8.

When the pump is operating and suction is applied through the suction line 5, the foot valve disk 39 israised from its seat whereby to permit upward flow of water from the well point 2 into the mixing chamber of the'jet pump 6. However, as soon as the pump 8 ceases to exert suction through the suction line 5, the foot valve disk 39 is seated to prevent downward iiow of 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 for the same purpose. Furthermore, while the pump 8, in both of the arrangements illustrated in Figures 1 and 2, has been shown as closely disposed with respect to the head of the well or the upper` end of the well casing I, theymay be quite remotely disposed with respect thereto without in any wis appreciably affecting the eiilciency of the system.

The extreme compactness of the jetpump 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 beenY used entirely in shallow driven wells. The ability to use such small well casings makes it possible to drive wells of such depth as hitherto necessitated expensive and laborious well boring operations. While it was hitherto possible to drive such casings to such 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 11A" diameter. The ability to use casings of such small diameter appreciably reduces the cost of deep wells due to and closes to prevent down iiow .of' water there.

through when the suction in the suction line 5 is sumciently reduced to permit such down iiow of water through the foot valve o1' the jet pump 8. One of the important features of the invention is the use of the well casing I, in cooperation with the suction line 5, concentrically arranged therein, to form a conduit for supplying water downwardly for operation of the jet pump.

Another feature of the invention is the provision of structure which is sufiiciently compact to make possible the use, in deep wells, of well casing of such small diameter as will permit Athem to be driven into the ground to sufficient depth without the necessity for boring whichis a necessary and expensive procedure where well casings of greater diameter must be provided. In its broader aspect, this invention consists in the provision ofa method and 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 of my invention may be utilized arid that I desire to comprehend within my invention such modifications as come within the scope of the claims and the invention.l 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 pump delivery line connected to the deliveryof 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 vto 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 they suction of said pump, means directly connecting said jet pump supply conduit means with said pump delivery line, and means including a check valve connecting said tank supply line with said jet 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, 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, pressure responsive pump motor control switch means on said tank, jet pump means including a suction 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 line, and means vincluding a check valve connecting said tank supply line with said j et pump supply conduit means.

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 beytween said well casing and said jet pump and suction line, and means for applying suction to said suction line and uid pressure to said jet pump supply conduit comprising a ud pressure pump, means including a check valve connecting the suction of said pump to saidsuction line, a pump delivery line connected to the delivery of said pump, a pressure regulator valve connected to said pump delivery line, a water tank connected to a house service line, a connection between said tank and said pressure regulator valve, means includlng a check valve connecting said last-named connection with said jet pump supply conduit, and means directly connecting said pump delivery line with said Jet pump supply conduit.

4. 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 said jet pump supply conduit comprising a motor driven pump, means including a check valve connecting the suction of said pump to said suction line, a pump delivery line connected to the delivery of said pump, a pressure regulator valve connected to said pump delivery line, a water tank connected to a house service line, a pressure responsive pump motorcontrol switch .connected to said water tank, a connection between said tank and said pressure regulator valve, means including a check valve connecting said last-named connection with said jet supply conduit, and means directly connecting said pump delivery line with said jet pump supply conduit.

5. In a deep well pump system, a liquid pressure pump having a suction conduit and a delivery conduit, a tank connected to the delivery conduit of said pump, pressure regulator valve interposed in said delivery conduit between said pump and said tank, a service delivery line connected to said tank, a well casing, a suction pipe in said well casing, a sealing member between said' well casing and said suction pipe dividing said well casing into upper and lower chambers, a jet pump in said suction pipe communicating with said upper well casing chamber and discharging into said suction pipe, said suction pipe being connected to the suction conduitof said iluid pressure pump above said Jet pump and to said lower well casing chamber below said jet pump, a foot valve between said suction pipe and said lower well casing chamber, and means connecting said iluid pressure pump delivery conduit on the exit side of said pressure regulator valve with said upper well casing chamber.

6. In a deep well pump system, a well casing, a suction pipe in said well casing, sealing means between said well casing and said suction pipe dividing said well casing into upper and lower well casing chambers, a jet pump within said suction pipe connected to said upper well casing chamber, a fluid pressure pump having a suction conduit and a delivery conduit, means connecting said suction pipe with said pump suction conduit, a tank connected to said pump delivery conduit, a pressure regulator valve interposed in said pump delivery conduit between said pump and said tank, a service delivery line connected to said tank, and a pair of jet pump supply lines connecting said upper well casing conduit with said pump delivery conduit on opposite sides of said pressure regulator valve.

ANTHONY G. HORVATH.