US3336875A

US3336875A - Deep well pump

Info

Publication number: US3336875A
Application number: US528477A
Authority: US
Inventors: Conhagen Alfred
Original assignee: Alfred Conhagen Inc
Current assignee: Alfred Conhagen Inc
Priority date: 1966-02-18
Filing date: 1966-02-18
Publication date: 1967-08-22
Anticipated expiration: 1984-08-22

Description

A. CONHAGEN DEEP WELL PUMP Aug. 22, 1967 2 Sheets-Sheet 1 Filed Feb. 18, 1966 INVENTOR fllfred Cahhagen 2, 1967 A. CONHAGEN 3,336,875

DEEP WELL PUMP Filed Feb. 18, 1966 2 Sheets-Sheet 1 0L I I 19.

3,336,875 DEEP WELL PUMP Alfred Conhagen, New Canaan, Conn. Alfred Conlllagen, Inc., 172 Lynhurst Ave., Staten Island, N.Y.

Filed Feb. 18, 1966, Ser. No. 528,477 10 Claims. (Cl. 103-88) This invention concerns a centrifugal pump adapted to pump liquids from wells or ship tanks without the aid of priming devices.

In the present pump the liquid is raised mechanically by centrifugal force and does not rely upon suction, screw type propellers, rotary cups, etc. The pump is arranged so that a minimum amount of turbulence and liquid friction is introduced.

According to the invention there is provided a rotary tube in which is a multiple wing partition defining passages which guide the liquid upwardly to a reservoir from which the liquid is expelled centrifugally to a rotatable expeller. The expeller discharges the liquid centrifugally under pressure from the reservoir. A plurality of rotary tubes can be disposed in parallel to multiply the pumping capacity of the pump.

It is therefore a principal object of the invention to provide a pump including a rotary tube divided by a partition into passages through which liquid is centrifugally expelled from a tank or well into a reservoir with a rotary centrifugal expeller for discharging the liquid from the reservoir.

A further object is to provide a pump as described with a stationary outer tube surrounding the rotary tube to support the same and to reduce turbulence and liquid friction in the tank and around the rotary tube.

Another object is to provide a pump including a plurality of stationary outer tubes and rotary inner tubes, with partitions in the inner tubes for passing liquid centrifugally from a tank to a common reservoir, with an expeller for discharging the liquid from the reservoir, and with a common prime mover operatively connected by gear means for driving the rotary inner tubes and expeller simultaneously.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIGURE 1 is a side elevational view partially in section of a pump embodying the invention,

FIG. 2 and FIG. 3 are horizontal sectional views taken on lines 2--2 and 3-3 of FIG. 1,

FIG. 4 is a fragmentary perspective view of a portion of a partition employed in the pump of FIG. 1,

FIG. 5 is a perspective view, with portions broken away, of another pump embodying the invention,

FIG. 6 is a horizontal sectional view taken on line 66 of FIG. 5, and

FIG. 7 is a reduced elevational view partially in section and with portions broken away of another pump embodying the invention.

Referring first to FIGS. 1-4, there is shown pump 10 provided with an electric drive motor 12 having an axially vertical drive shaft 18. The motor is mounted in a stationary position by a bracket 20 secured to a stationary support 22. The shaft 18 extends axially of a sealing ring 21 in generally cylindrical axially vertical casing 24 having a 4* United States. Patent 0 3,336,875 Patented Aug. 22, 1967 lower reservoir chamber 25 and an upper liquid discharge chamber 26. An annular horizontal partition 28 in the casing 24 separates the two chambers. Rotatably disposed in an opening 29 in partition 28 is the bottom cylindrical end 30 of a liquid expeller 32. This member has four discharge nozzles 34 extending radially of the expeller axially horizontally and spaced circumferentially apart around the expeller. Passages 35 in the nozzles communicate with axially vertical inlet .ports 36 in the expeller open at the top of the reservoir chamber 25. The expeller 32 is secured to and rotates with shaft 18.

The casing 24 has a bottom annular wall 40 in which is a central opening 41. A thrust ball bearing assembly 42 engages the exterior of an axially vertical rotary tube 44 near its upper end. The upper end of the tube extends into the reservoir chamber 25 and is provided with a plurality of circumferentially spaced ports or openings 46. The upper end of the tube is closed by a head 48 secured thereto and coupled by a fitting 49 to the lower end of shaft 18. Afiixed to the interior of tube 44 is a vertical partition 50 having three radially extending wings 52 defining three passages 54 through the rotary tube 44.

The lower end of tube 44 is engaged by a thrust ball bearing assembly 55 near the lower end of a stationary cylindrical tube 56 which concentrically surrounds tube 44. Tube 56 is open at top and bottom ends. Tube 56 at its upper end is secured to casing wall 40 in opening 41. Thrust bearing 42 is secured in the upper end of tube 56. Tube 44 has a bottom flange 59 with a central opening or port 60 which opens into the three passages 54 to admit liquid thereto.

The pump can be mounted on the upper wall 62 of a tank 64 containing liquid '65 with tube 56 extending through tank opening 63. In order for the pump to be operative, the liquid level 66 must be above the bottom open end of tube 44. When the electric motor 12 is energized, the expeller 32 and tube 44 with partition 50 are driven at high speed. Liquid enters the tube opening 60 and climbs up the narrow passages 54 from which it is expelled centrifugally through ports 46 into the reservoir chamber 25. When the chamber 25 is filled, the liquid rises in expeller passages 36 and is then discharged through nozzles 34 centrifugally into chamber 26.

From chamber 26 the liquid is discharged under pressure through outlet port 66 opening radially of the casing in chamber 26. An outlet conduit 68 may be connected to port 66 to receive the discharged liquid. 3

It will be noted that the pump does not require suction to operate. It operates mechanically by centrifugal forces induced by the high speed of rotation of the tube 44 and expeller 32. The tubes 44, 56 can be any desired length depending on the lift of liquid required. Use of helically curved vanes, cups and other like mechanical lifting devices is avoided. The rotary tube 44 is radially spaced from liquid 65 by the stationary tube. This prevents tur-,

bulence and minimizes friction. The pump thus operates efficiently and is capable of continuous operation at any level of liquid, provided it covers the tube opening 60.

The ball bearing mounting at the rotary tube 44 in stationary tube 56 insures free rotation without vibration. Bolts 69 may be used to secure casing wall 40 to the top of tank 64.

In FIGS. 5 and 6 is shown another pump 10A which is similar in principles of operation to pump 10 and corresponding parts are identically numbered. Pump 10A has a plurality of axially vertical stationary pipes or tubes 56 which surround and support rotatable inner tubes 44 :spectively. Each of the tubes 44 is divided into passages 4 by a plural wing partition 50. The tubes 56 are secured upper ends to the bottom 71 of easing 24a in circumzrentially spaced positions. Casing 24a has one discharge )nduit or nozzle 66a opening from chamber 26a in which (peller 32 is located.

The pump has a drive motor 12a Whose shaft 14a is )upled to shaft 18a which drives expeller 32 in chamber 6a. Shaft 18a supports and drives a main central drive ear 70 located in chamber 25a under partition 28a. Gear in turn is engaged by four gears 72 at circumferentialr spaced points supported by stub shafts 74 journaled in earings 76 in partition 28a. The upper ends of tubes 44 re journaled in bearings in the same manner as illustrated 1 FIG. 1. The gears 72 are secured at upper ends of tubes 4 and may serve as closure heads above discharge openigs 46.

By the arrangement described and illustrated in FIGS. and 6, liquid drawn up by rotary tubes 44 is discharged entrifugally via ports 46 into chamber 25a. The liquid Jen passes through expeller 32 into chamber 26a from IhlCh the liquid is expelled through nozzle 66a.

Pump 10A operates like pump '10 in drawing water up hrough the inner rotary tubes 44 to the common reservoir hamber 2 and then through the expellers 32 to the disharge conduits or nozzles 66a. The motor 12a drives all xpellers and rotary tubes simultaneously, and the rotary ubes operate in parallel. Pump 10A which has four tubes 4 as illustrated in FIG. 5 will have four times the capacity vf pump with only one tube 44. A larger motor will )f course be required to drive the expeller and tubes 44 If pump 10A. The pumps 10 and 10A can be made up in 'arious sizes to meet various pumping requirements. More Jr less than four tube assemblies 44, 56 may be provided.

In FIG. 7 is shown pump 10B which is similar to pumps [0 except in an upper floating mounting arrangement for :xterior stationary tube 56'. The bottom end of tube 56' s provided with an annular flange 80 having circumferentially spaced radial slots 82 registering with slots 84 at the bottom end of tube 56'. The flange 80 rests on the oottom 85 of the tank 86. The upper end of the tube 56' Is connected to casing 24'. The upper end of tube 56' extends through an opening 88 in the upper wall 90 of the tank. A resilient buffer ring 92 is secured in the opening 88. The tube 56' is slightly spaced for the ring to provide annular clearance 94. This clearance allows for movement of a ship in which the pump may be installed while pumping liquid 65' out of the tank.

It will be understood that all the pumps described employ just one expeller operating in a chamber which receives liquid from a single common reservoir into which one or more rotating tubes centrifugally discharge liquid. The expeller may have any desired number of nozzles or vanes which may be other than four as illustrated in FIGS. 2 and 6. Instead of an electric motor drive, air or steam turbines may be used and will be preferred when pumping flammable liquids. Instead of a mounting bracket, some other type of mechanical support for the motor can be provided. In any case the construction should be such that the entire unit including motor, pump casing and tubes can be removed. If desired, a thrust bearing may be provided in the pump casing to help support the weight of the motor. Sleeve or drag bearings may be provided at the lower ends of the rotary tubes to permit them to find their own center of gravity. If desired the stationary outer tube can be secured to the top of the tank.

While I have illustrated and described the preferred embodiments of the invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claims.

What is claimed is:

1. A centrifugal pump, comprising a stationary general- 1y cylindrical axially vertical casing, said casing having a first partition therein dividing the easing into a lower reservoir chamber and an upper liquid discharge chamber, said liquid discharge chamber having an outlet port, said casing having a bottom wall with an opening therein, a first axially vertical tube secured nonrotationally to the bottom wall of the casing at said opening, a rotary axially vertical second tube disposed inside the first tube concentric and coaxial therewith, bearings at upper and lower ends of the second tube rotatably engaging the second tube to the first tube, said second tube at its upper end extending into said reservoir chamber, a multiple wing partition secured in and extending longitudinally of the second tube dividing the same into a plurality of narrow passages to admit liquid into said passages, said second tube having lateral ports at its upper end opening from said passages respectively into said reservoir chamber, a head at the upper end of the second tube closing the same, and drive means engaged with said head for rotating the same, whereby liquid is drawn up through said passages and discharged centrifugally into said reservoir chamber.

2. A centrifugal pump as recited in claim 1, further comprising an expeller disposed in said discharge chamber and arranged to receive liquid under pressure from the reservoir chamber for discharging the liquid through the outlet port.

3. A centrifugal pump as recited in claim 1, wherein said drive means comprises a motor driven drive shaft disposed axially vertical and connected to said head closing the upper end of the second tube, said shaft extending upwardly through said discharge chamber.

4. A centrifugal pump as recited in claim 3, further comprising a motor having a shaft coupled to said drive shaft outside the casing.

5. A centrifugal pump as recited in claim 3, further comprising an expeller rotatably disposed in said discharge chamber and connected to said drive shaft so that the expeller is rotated thereby, said expeller having axially extending ports opening into said reservoir chamber to receive liquid therefrom and radially extending other passages connected to said ports for discharging liquid centrifugally into the discharge chamber under pressure, whereby the liquid passes out of said outlet port.

6. A centrifugal pump as recited in claim 5, further comprising a motor having a shaft coupled to the drive shaft outside the casing.

7. A centrifugal pump as recited in claim 2, further comprising a third axially vertical tube secured nonrotationally to the bottom Wall of the casing, a rotary axially vertical fourth tube disposed inside the third tube concentric and coaxial therewith, other bearing means at upper and lower ends of the fourth tube rotatably supporting the same in the third tube, said fourth tube extending at its upper end into said reservoir chamber, another multiple wing partition secured in and extending longitudinally of the fourth tube dividing the same into a plurality of other narrow passages, said third tube having an open bottom end, said fourth tube having a bottom opening open to said other passages to admit liquid thereto, said fourth tube having other lateral ports at its upper end opening from said other passages respectively into said reservoir chamber, and another head at the upper end of the fourth tube closing the same, said drive means being engaged with said other head for rotating said fourth tube and other partitions simultaneously with the second tube and first named multiple wing partition, whereby liquid is drawn up through the passages in both rotary tubes simultaneously and is discharged centrifugally into the reservoir chamber.

8. A centrifugal pump as recited in claim 7, wherein said heads comprise gears on the rotary tubes, said drive means comprising a plurality of drive shafts respectively connected to the gears at the upper ends of the second and fourth tubes, a motor driven shaft extending into the casing, and drive gear on the motor driven shaft in the casing meshed with said gears and driving the same so that the rotary second and fourth tubes rotate simultaneously.

9. A centrifugal pump as recited in claim 8, further comprising a drive motor located outside the casing and connected to said motor driven shaft for driving the same.

10. A centrifugal pump as recited in claim 2, further comprising an annular flange secured to the bottom end of the first tube to support the same on the bottom of a tank, said flange having circumferentially spaced slots registering with slots at the bottom end of the first tube for admitting liquid to the first tube.

References Cited UNITED STATES PATENTS Nowacki 103-9] Mattson 103-85 Light 103--9S Stoors 103-95 Boettcher 103-91 Burgin 10388 10 ROBERT M. WALKER, Primary Examiner.

HENRY F. RADUAZO, Examiner.

Claims

1. A CENTRIFUGAL PUMP, COMPRISING A STATIONARY GENERALLY CYLINDRICAL AXIALLY VERTICAL CASING, SAID CASING HAVING A FIRST PARTITION THEREIN DIVIDING THE CASING INTO A LOWER RESERVOIR CHAMBER AND AN UPPER LIQUID DISCHARGE CHAMBER, SAID LIQUID DISCHARGE CHAMBER HAVING AN OUTLET PORT, SAID CASING HAVING A BOTTOM WALL WITH AN OPENING THEREIN, A FRIST AXIALLY VERTICAL TUBE SECURED NONROTATIONALLY TO THE BOTTOM WALL OF THE CASING AT SAID OPENING, A ROTARY AXIALLY VERTICAL SECOND TUBE DISPOSED INSIDE THE FIRST TUBE CONCENTRIC AND COAXIAL THEREWITH, BEARINGS AT UPPER AND LOWER ENDS OF THE SECOND TUBE ROTATABLY ENGAGING THE SECOND TUBE TO THE FIRST TUBE, SAID SECOND TUBE AT ITS UPPER END EXTENDING INTO SAID RESERVOIR CHAMBER, A MULTIPLE WIND PARTITION SECURED IN AND EXTENDING LONGITUDINALLY OF THE SECOND TUBE DIVIDING THE SAME INTO A PLURALITY OF NARROW PASSAGES TO ADMIT LIQUID INTO SAID PASSAGES, SAID SECOND