US1510990A - Air-lift and air-driven rotary pump - Google Patents

Description

\ Get. 7 ,1924.

H. H. HENDERSON AIR LIFT AND AIR DRIVEN ROTARY PUMP Filed May 2a. 192:5

INVENToR. Helal H.Hendez-s0n 6 a YQA/y` Xb l ATTORNEY Patented oci. 7, 1924.

UITED STATES Y y 1,510,990 PATENT orifice.;v

HENRI E. HENDERSON, OF S'.l0CK'.I!QN,` CALIFORNIA.

AIR-LIFT AND AIR-DRIVEN ROTARY PUMP.

Application led May 2.8,

To aZZ whom t may concern:

Be it known that I, HENRI I-I. HENDER- soN, a citizen of the United States, re-

siding at Stockton, county of San Joaquin,

State of California, have invented certain new and useful Improvements in Air-Lift and Air-Driven Rotary Pumps; and I do declare the following to be a full, clear, and exact description of the same, reference being had to the acco-mpanying drawings, and to the characters of reference marked thereon, which form apart of this application.

This invention relates to improvements in pumps, for water and the like, of that general type adapted to set vertically in a well casing, and commonly designated as turbine or rotary pumps.

The principal object of my invention is to produce a pump of this character to be driven by compressedfair, and sojconstructed and arranged that the exhaust'air is then utilized as an air-lift or boost for the water.

I appreciate of course that in itself, to drive a pump by compressed air is not novel, and neither is the utilization of air to lift the water; but as far as I am aware, no pumps for submerged service have been constructed which .are 'driven by compressed air applied at a point adjacent the pump-venes or rotor, and which then use the same air, after it has served its driving purposes, for aiding ,in the lift of the water.

A pump constructed according to my invention will, I believe, be inexpensive to manufacture and operate, and extremely long lived, since there is butl one moving member, and twoopposed bearings for the same, which 'may easily be of a character which will give long and satisfactory service without vattention or renewal.

These'objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate correspondingy parts in the several views:

Fig. 1 is a vertical elevation of the pump as installed in a well casing, partly in section.

Fig. 2 is a cross section on the line 2 2 of Fig. 1.

Fig. 3 is a fragmentary detached view Aof a Eortion of the rotor.

4 shows a modification of the rotor. x u

' between the top and bottom of the casing 1 i Rerring now more particularly to the 192s. serial No. 641,918.

characters of reference on the drawings, the numeral 1 denotes a circular casing, provided on its inner eriphery with vertically disposed vanes 2 ormed as ratchet-shaped teeth extending substantially from top to bottom of the casingat which points the teeth are shrouded, as shown by the flanges 3. A

Arms 4 extend upwardly from the top of the casing, at a suitable angle toward each other, and terminate at their upper end in a hub or boss 5 to receive the upper end of a hollow shaft 6 therein. Roller or similar bearings 7 are provided for the shaft in the upper portion of the member 5, while in the lower portion thereof is a stuing box structure 8 of suitable form.

Secured on the boss 5 is a removable cap 9, into which the lower end of an air supply pipe l0 is adapted to be screwed, 'and which supports .the casing and parts mounted therein.

The arms 4r are preferably triangular in f are removably secured thereto. These pads U preferably extend the full height of the casing as ribs having an easy fit in the well casing 14e, serving as abutments for one or more stops 15 of a suitable character mounted in the well asing, and preventing rotation of the the casing 1 while allowing it freedom of vertical movement.

Extending downwardly from the lower ends of the pads or ribsf12 are arms 16, converging toward each other and formed at their lower ends witha boss 17 servin as a journal and support for the lower en of the shaft 6, a suitable form of thrust bearing as at 18 being placed between the shaft and boss Vor bearing member. A. stung box 19 is provided on the bearing member 17 above the thrust bearing. These arms 16 are also triangular in shape, with thel apex along the outer edges thereof, and the boss 17 is preferably pointed on its lower end, to reduce resistance to the ow of water therepast. .A small bore 6 leads from the main bore of the shaft 6 to the lower end thereof, which is spaced from the bottoni of the bore of the bess 17.

are horizontal and suitably pitched4 imtically alined with each other, and the outer a, velocity depending o ends of the alined vanes are connected to, and preferably formed integral with, hollow vertical arms 21, extending from top to bottom of the casing 1, and having a close running fit therein and with the teeth 2 except that pockets or vertical grooves 22 are provided in `their outer peripheries intermediate their verticalend edges.

These armsare hollow as at 21a from top to bottom but plugged 'at their ends, the hollow areas communicatingwith the interior of the shaft 6 by means of passages 23 through the vanes 20. Bored from the arm-pockets 22 to the hollow interior of the arms is a plurality of air-blast holes 24, disposed so that air issuing therefrom will impinge directly against the substantially radial 'faces of the adjacent teeth 2, the

pockets being of s uch peripheral extent relative to the pitch or width. of the teeth that at least one whole tooth will vbe within the pocketrarea.

'llhe1 forward or leading ed es of the arms 21 are concavely curved as s own at 25, so as to aid in sweeping the water onto the vanes.

lln operation, with the pump lowered into the water in the'well casing, ythe admission of air at a suitable pressure into the shaft 6 from the pipe 10 -will ofr course pass into the arm-passages 21, and from thence out through the nozzles or et openings 24, Iwith course on the pressure of the air.

- rllhe jets of air, striking the casing teeth or vanes 2,l causes .the arms 21, together ofcourse with the blades or vanes 20 and shaft 6, to rotate9 since the casing l is held against rotation in the stationary well casing, as'

previously described.

llhey pltch of "the impeller blades is of course so disposed relative to the necessary direction of rotation of the shaft that the water in which the pump is submerged will be forced upwardly. At the same time, the

air, after issuing from the nozzles and exerting its force to rotate the impeller, is with such rotation released from the pockets 22 formed between the vanes 2 and the arms 21, and mingles with the water passing up inside the casing 1.

Since the air has considerable pressure, and in any event tends to rise to the top of the water, it acts to boost or help lift'the latter, functioning in the manner already recognized and made use of in the pumping 'art or profession.

Macnee By reason of the close fit of the armsl21 with the casing vanas, and the shrouding of the upper and lower ends of the latter, but a vvery slight percentage of the air issuing from the nozzles will escape without doing effective Work in rotating the impeller unit;

The small bore 6B in the lower end of the shaft 6 enables the air pressure to pass below `the shaft, when pressing upwardly thereagainst, it acts as a cushion for the shaft, relieves the strain on the bearing 18, and reduces friction.

lf desired, the rotor arms 21a shown in Fig. 4r may be made with a compounding or auxiliary air drive feature, this consisting -of an additional vertical groove or pocket 26 beyond the pocket 22a having the jets therein. vlin thismanner,with the movement of the arms past the vanes 2,l the air confined between said vanes and the arms, instead of immediately escaping into the casing, will first pass into the pockets 26, aiding in the rotating of the arms, though of course having a lesser pressure than the air issuing from the jets.

From the foregoing description it will be readily seen that ll have produced such a device as substantially fulfills the objects of the invention as set forth herein. While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail vmay be resorted to as do. not form a vdeparture from the spirit of the invention, as defined by the appended claims.`

Having thus described my invention what ll claim as new and useful and desire to secure by Letters Patent is:

1. A vpump for submerged service comprising a stationary and open ended casing, an impeller structure turnably mounted therein, Tand means for rotating the impeller structure by compressed air applied between said structure and the casing from top to bottom thereof.

2. A pump comprising a stationary and open ended casing, an `impeller structure turnably mounted therein, vertical fixed vanes in the casing, and means for rotating the impeller structure by compressed air applied against the vanos fromsaid structure.

3. A. pump for submergedservice c'omprising a stationary and open ended casing, an impeller structure turnably mounted therein, vertical vanes in the casing, airshaft, and passage means from the shaft to the jets. v

5. A pump for submerged service comprising a stationary and open ended casing,

` an impeller structure turnably mounted therein, vertical vanes in the casing, airjet means provided with the impeller structure and facing said vanes, a hollow shaft formed as the axis of the impeller structure,

passage means from the shaft to the jets,

. and anair pipe secured to the upper end of the casing and supporting the same, the upper end of the hollow shaft communicating with' the air pipe.

6. A pump for submerged service comprising a stationary open ended casing structure, a shaft turnably mounted centrally thereof and supported thereby, horizontally pitched impeller blades rojecting outwardly from the shafts, ho low arms provided with horizontally disposed air jet means positioned at the outer ends of the blades, vertical vanes in the casing toward which the jets face, the arms having a running lit with the vanes, and means for feeding air under pressure to the jets. Y

7. A pump for submerged service comprising a stationary 'open ended casing structure, -a shaft turnably mounted oentrally thereof and supported thereby, horizontally pitched impeller blades projecting outwardly from the shaft, hollow arms provided with horizontally disposed air jet means positioned 'at the outer end of the blades, vertical vanes in the casing toward which the jets face, the arms having a running t with the vanes, the blades and shaft being hollow and communicating with the ,interior of the arms; means being rovided for feeding air under pressure to t e shaft.4

8. A pump fgr submerged service comprising a stationary open ended casing structure, a shaft turnably mounted centrally thereof and supported thereby, a' plurality of vertically spaced rows of horizontally pitched impeller blades arranged in vertical alinernent, hollowarms connecting the vertically alined blades at their outer ends, air jet means leading from onel of the vertical faces of each of the arms, Vertical vanes in the casing toward which the jets face, the arms having a running fit withA 9. A pump for submerged service com.-

prising a stationary open ended casing structure, a shaft turnably mounted centrally thereof and supported thereby, horizontally pitched impeller blades projecting outwardly from the shaft, hollow arms at the outer ends of the blades, vertical vanes in the casing,the arms having a running t with the vanes exceptfor vertical grooves intermediate their vertical edges which form pockets with the vanes, horizontal air jet means in the arms opening into the pockets and facing the vanes, and means for feedin air under pressure to thejets.

10. pump 'for submerged surface comprising an open ended casing having vertical vanes around its inner periphery, an impeller structure turnably mounted in the casing, vertical' arms provided with said structure and positioned adjacent the casing-vanes, said arms having 'spaced and vertical grooves on their peripheral faces, and jets projecting from the forward ones of the pockets relative to the direction of imparted rotation and facing the vanes.

11. A pump for submerged surface comprising an open ended casing having vertical. vanes around its inner periphery, an

impeller structure turnably mounted in the casing, vertical arms provided with said i HENRI H. HENDERsoN.

Images