US1679111A - Pneumatic pump - Google Patents

Description

Patented July 31, 1928.

UNITED STATES CHARLES B. ALYEA, OF DOWNERS GROVE, ILLINOIS.

PNEUMATIC PUMP.

Application filed November 26,1924. Serial No. 752,414.

My'invent-ion relates to a pneumatic pump of the intermittent operating variety and has for its primary object the provision of a pump in which compressed air is utilized as a lifting force and in which a cylinder is employed having an air inlet port and an air outlet port therein with a set of levers to which an upper and lower float are connected which are adapted to alternately open and close the said intake and outlet ports, the said floats operating independently of each other, and in which the said l-evers are locked by one float and released by the other 'Hoat Another and further object of my invention is the provision of a. pneumatic cylinder having a cylindrical casing which is comparatively small in diameter and which is adapted to be inserted in drilled or bored wells, as well as in open wells and the like and in which a minimum size is required in order to insert the cylinder in the casing.

Another and further object of my invention is the provision of a. pneumatic pump in which the arrangement of floats is such that the full capacity of the cylinder is utilized in operating the device.

Another and further object of my invention is the provision of a pneumatic cylinder which is simple and etlicient in operation and which is not easily clogged or otherwise put out of operation by sand and the like lodging in the pump and causing leakage therein.

These and other objects of my invention will be more fully and bet-ter understood by reference to the accompanyingsheet of drawings and in which z- Figure lis a'longitudinal view partially in section and partially in elevation of my improved pump showing the valve operating levers in upper locked position;

Figure 2 is ay longitudinal view partially in elevation and partially in section taken at right angles to the view ot Figure 1y on line 2-2 of Figure 1; and

Figure 3 is a. detail View partially in elevation and partially in section showing the locking levers in their lower locked position.

Referring now specifically to the drawings and in which like reference characters refer to like parts throughout, a cylindrical casing 10 is shown having an upper head 11 therein and secured thereto in any approved manner, the said head 11 having an air inlet port 12 controlled by a valve 13 mounted on the upper end'of a valve rod 14'which is connected by means of a link 15 at its lower end to a bell crank lever 16 by a -pin 17. On the opposite side of the cylinder head 11 from the inlet port v12, is an air exhaust port 18 which is opened and closed by means of a valve 19 mounted upon a valve rod. 20

which has a nipple 21 at the lower end thereof with a second rod 22 mounted in a nipple 23 over which an expansion spring 24 is mounted, the rod 22 being slidab'ly mounted in thel nipple 23 so that the valve 19 is pushed against the scat around the port 18 by the pressure of the spring 24, the nipple-*23 being secured to a. bell crank lever 25 by means of a pin 26. The lever 25 is pivot-ally mounted at its outer end upon a pin 27 mounted at one end of and ext-ending through a pair of cross members 28 and v34 which are. se,

cured to the sidesl of the ycasing 10 at each of their ends by spot welding or the like, the bell crank 25 projecting inwardly towards the center of the cylinder 10 andl has an angularly disposed portion 29 at the end thereof to which a rod 30 is secured by means of an eye 31 formedL on the rod 30 with an upper float 32 mounted upon the upper end of the rod 30. The bell crank lever 16 is mounted upon a pin 33 which extends through the cross members 28 and 34 at their opposite ends from the pin 27, the crank lever extending inwardly towards the center of the casing 10 and having an angularly Y' disposed end 35 projecting outwardly and downwardly therefrom to which a rod 36 is Secured by means ofv an eye 37, formed Vin said rod 36, the said rod 36 having a sleeve 38 mounted thereon at the lower end of` their upper and lower locked positions. The Y levers 16 andy 25`lwith the links 40and 41 when in their upper and lower positie-ns respectively, form an arch or truss across the casing -10 with thepins 42 and 43 at the uppermost and lowermost points of the arch respectively. The ends 29k and 35 are turned .having openings at an angle to the levers and 16' respectively so that when the levers are pulled into their locked positions the centers ott-he pins 42 and 43 are outside of a line drawn trein the centers of the pins 33 and and 27 and 42 respectively, so that torce applied to lthe outside of the arch has no etl'ect thereon and docs not result in any inovenient of the levers 16 and 25, the lines of torce passing directly to the pins 27 and 33. rlhis truss or arch is alternately vtornied with a long` and a short side dependingupon the alignment ofi the links and 4l with the levers 16 and 25 and when torce is applied to the long arni alone trein the inside of the truss, the truss is hroken and is again Yiorined on the opposite side of the horizontal center. rl`he toreo for breaking the truss is applied to alternate sides there-of by the oounterweights 32 and 39 as the water in the cylinder raises and lowers these lioats. t will be noted that the angular portieri 35 ot the lever 1G and the ineinber 25 are parallel with each other when the levers are in the position shown in Fig ure 2, and that the upper edge ot' the portion 35 contact-s Vagainst the lower edge or" the portion 25, and the saine condition applies to the portion 29 and the lever 1G as shown in Figure 3, when the truss torined on the lower side ot' the horizontal plane reerred to above.

The cylinder head ll has' a chamber 44 extending transversely therein into ono side` ot which a pipe terminates, the said pipe extending downward along` the out-er wall ot' the casing 10 to thelower end thereoi and has a lbolt 46 positioned in the lower end of the pipe which extends through the lower cylinder head 47. llt the opposite side ot the casing is a. sirnilar pipe 4S also terminating in the transversely extending' chamber 44 in the cylinder head ll., the said pipe 43 having a bolt 49 in the lower end thereof which extends through the lower cylinder head 47, a. cap 50 being provided which extends over the lower end oi"- the cylinder 47 and which carries a projection 5l within which a valve stem 52 is seated scoured to a Vvalve 53 which holds t-he gravity operated valve 53 in position, the valve 53 lia-vino' the usual gasket 54 secured thereto and which seats upon an annular shoulder 55 formed in the head 47, the lower head 47 and cap 50 therein through which water passes into the casing l0.

rlhe said outlet pipes 45 and 48 have ports 56 and 57 at their lower ends and the cylinder head l1 has an outwardly projecting portion 58 which is internally threaded and to which an outlet pipe is secured with a check valve 59 located therein to prevent the water flowing; backward into the cylinder as will be inore tully described hereinafter.

rlhe operation oit the device is exceedingly simple in that it is placed below the water 1,evo,111

to the cylinder head ll at 6l adjacent the air outlet port i8. Assuming1 that the water in the cylinder 1s being exhausted by air under iin'essure being` admitted thereto, theV lower tioat 39 drops downward, the sleeve 33 slidingl along the rod 3G until its weight is suspended from the end 35 ot' the lever 16 by means of the rod 36, the weight oi' the float 39 ,being sutlicient to break `the long arni orf the truss by pulling the lever lo around the pin and thus unlocking the levers 1S and 25 and pulling`v the ends oi the levers 16 and 25 downward into the position shown in Figure 3, thereby drawingl the valve 13 downn-ard and closing the intake port l2 and at the saine time pulling the valve 19 away freni its seat and openingthe air exhaust port 18 which thus allows the een'ipressed air to escape from the cylinder l0. Thereupon water enters the casing l() by lifting the valve 53 in the lower end of the cylinder 1G and the cylinder l'ills with water, 'driving out the air which has been reduced toatrnospheric pressure in the cylinder and as the cylinder ll() iills with water the float. 39 rises, the sleeve 38 sliding along the rod 3G until the upper end of the sleeve 33 eoinesin contact with the eye 37 in the rod 36. rllhis float remains in this position ior the tiine beinfr because its lifting torce applied to the pin 42 and the torce thereby being` divided against the pins 27 and 33 so that trio arch 'torniod below the horizon- Y tal plane ot the pins 2 7 and 33 remains 1ntact until force isapplied to the long arni et the areh by yan upward lpull ot the lfloat as hereinafter described. The members Il and34 are curved outward `so'ihere is sutiicient clearance between these neinbers at their centers so the pins 42 and'43 can pass between these ineinbers.

The cylinder continues to till with water and as the water rises in the cylinder the float 32 exerts anupward pull on the lever and thus pulling` the levers out ol their lockedlower position and into the position sh vn in Figure l, thus opening the air inlet port l2 and closing the outlet port 13,

whereupon compressed air is admitted into A in. their upwardly arched position which in this position are above the horizontal plane,

so that the force applied to these levers 4in a downward direction at the center of their angle is transmitted directly to the pins 33 and 27 andthe levers are thus locked in position against movement from this side. However, as the waterv recedes in the lower portion of the cylinder the float 39 recedes with kthe water, the sleeve 38 sliding down over the rod 3G until the float is near the bottom of the cylinder when it exerts its force upon the bell crank 16 pulling the levers downward into the position shown in li`igure 3 and thus closing the air inlet port 12 and opening the air port 18 when the cycle of operations heretofore described is again conipleted. A steady flow is obtainec., if desired, byusing a small equalizing tank on the water line. Y

' lt. will thus be understood that the bell cranks 16 and 25 after having been acted upon by the floats 32 and 39 respectively, are` locked against counteraction byV the said floats and that movement of the levers r1G and 25 is always accomplished by the floats acting alternately and that the levers are' held in locked position until conditions change in the cylinder 10 to cause either the upper or lower float to operate depending upon whether the water is rising in the cylinder or being exhausted therefrom. The casing 10 can be made as long as may be desiredy and the full length thereofutilized by positioning the floats 32 and 39 adjacent the upper andl lower ends thereof and with each operation the casing 10 becomes substantially filled with water and is also' substantially emptied with each operation of the device. The admission of compressed air into the water, of course, causes the valve 53 to seat so, that the water is forced out through the ports 56 and 5'?. Y l

Thilo l have described more or less precisely the details of construction, I do not wishv to be understood as limiting myself hereto, as I contemplate changes inl form and the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of my invention.

I claim :j n

1. A. pump comprising a casing having air inlet and outlet ports and water inlet and outlet openings, valves controlling the air inlet and outlet ports and water openings,7a pair of pivotally mounted levers adapted to open and close the air valves, vthe said levers eo-acting to form arches above and below the pivotal mountings, connections between said levers and the air valves and means operated by the water whereby7l a pulling force is exerted on said levers when in arched position thereby opening and closing the air inlet and outlet ports.

2. A pump comprising in combination a casingl having air inlet and outlet ports and water inlet and outlet openings, valves controlling said air ports and water passages',

a pair of levers, pivot-alv inountings forv said levers intermediate the ends of said casing,

connecting rods connecting said levers and the valves controlling the said air inlet and outlet ports, upper and lower floats connected to said levers and controlled by the rise and fall of the water in said casing for actuating said levers, and alinlr connecting the said levers. Y

3. 'A pump comprising in combination a casing having air inlet and outlet ports and `water inlet and outlet openings, valves con- ,casing having air inlet and outlet ports and water inlet and outlet openings, fvalves eonf trolling said air ports and water passages,

Va pair of levers, pivotal mountings for said levers intermediate the ends of said casing,

connecting rods connecting said levers and the valves controlling the said air inlet and outlet ports, connecting members between the said levers whereby the said levers form arches across said casing in upper and lower positions and an upper float adapted to actuate said levers in one direction as the water is rising in said cylinder and a lower float i adapted to operate the said levers as the water is forced out of said easing. 5. A pump comprising in combination a casing having air inlet and outlet ports and vwater inlet and outlet openings, valves controlling said air-ports and Water passages,'a pair of levers, pivotal VmountingsY for said levers intermediate the ends: of said casing, connecting rods connecting said levers and the valves controlling the said air inlet and outlet ports, connecting members between the said levers whereby the said levers form arches across said ycasing in upper andlower positions, and an upper `float adapted to actuate said levers in one direction as the `water is rising in said cylinder and a lower float adapted to operate the said levers as` the water is forced out of said casing, the said lower float being slidably mounted upon the end of one of said levers.

(i. A pump comprising in combination a casing having air inlet and outlet ports and water inlet and outlet openings, valves controlling said air ports and water passages,

ianV

a pair ot levers, pivotal mountings for said levers intermediate the ends of said casing, connecting rods connecting said levers and the valves controlling the said air inlet and outlet ports, connecting members between the said levers whereby the said levers term arches across said casing in upper and lower positions, an upper float adapted to actuate said levers in one direction as the water is rising in said cylinder and a lower float adapted to operate the said levers as the water is forced out et said casing, a pair ot bell crank levers having angularly disposed ends, the said ends extending parallel to the body portion ot each of said levers when in locked relation, and upper and lower lloats operated by the rise and tall ot the water in said casing and adapted to pull the said levers into and out ot locked relation with each other.

7. A pump comprising in combination a casing having air inlet and outlet ports and water inlet and outlet openings therein7 a pair et pivotally mounted levers in said casing, means connecting said levers whereby the said levers are formed in upper and lower arched positions in said casing, floats actuated by the rise and tall of the water in said casing, means connecting the said floats and the said levers, and operating connections between. the said levers and the valves controlling the air ports. l'

8. A pump comprising in combination a casing having air inlet and outlet ports and water inlet and outlet openings therein, a pair of pivotally mounted levers in said casing, means connecting said levers whereby the said levers are formed in upper and lower arched positions in said casing, iioats actuated by the rise. and tall of the water in said casing, connecting means for said floats and said levers and operating connec- VGO tions between the said levers and the valves controlling the air ports, each of said levers having angularly disposed ends adapted to lie against the edge of the co-operating lever when the levers are in arched positions.

9. A pump comprising in combination, a casing having air inlet and outlet ports and water inlet and outlet openings, valves controlling the air inlet and outlet ports and water openings, a pair oit co-acting levers pivotally mounted in said casing, connections between the said levers and the valves controlling the air inlet and outlet ports, means connectingthe said levers, the said levers and connecting means forming arches above and below the pivotal centers of the levers, and means operatedby the movement `of the water in the casing whereby a pulling force is exerted on said levers when in arched position thereby breaking the arch on one side ot said center and reforming it on the other side of said center, and opening and closing the air inlet and outlet ports.

10. A pump comprising in combination, a

casing having air inlet and outlet ports, wa-

ter inlet and outlet openings, valves controlling the air inlet and outlet ports and water openings, a pair ot coacting levers pivotally mounted in said casing, connections be* tween the said levers and the said valves controlling the air inlet and outlet ports, means connecting the said levers, floats in the said casing, and means connecting the said lioats and the said levers, the said floats co-acting to torce the said levers and connecting means into arched positions on each side of the pivotal mountings of the said levers. l 11. A pump comprising in combination, a casing having air inlet and outlet ports and water inlet and outlet openings, valves controlling the air inlet and outlet ports, co-acting levers pivotally mounted in said casing, a pivotally mounted member connecting the said levers, means connecting thesaid levers and the valves controlling the air inlet and outlet ports, an upper tloatl connected to one ot said levers, and a lower float connected to the other lever. I Y

l2. A pump comprising in combination, a casing having air inlet and outlet ports and water inlet and outlet openings, valves controlling the air inlet and outlet ports, co-acting levers pivotally mounted in said casing, a pivotally mounted member connecting the said levers, means connecting the said levers and the valves controlling the air inlet and outlet ports, an 'upper float connected to one of said levers, and a lower float connected to he other lever, the rise and tall of the water insaid casing causing the floats te form the said levers and connecting member into arched positions above and below the pivotal centers of the levers, the connecting member being in alignment with one of said levers 'in one position of the arched form of the levers and with theother lever in the other arched position.

13. A pump comprising in combination, a casing having air inlet and outlet ports and water inlet and outlet openings, valves controlling the air inlet and outlet ports, co-acting levers pivotally mount-ed in said casing, a pivotally mounted member connecting the said levers, means connecting the said levers and the valves controlling the air inlet and outlet ports, an upper float connected to one of said levers, and a lower float connected to the other lever, the said levers and connecting member being termed in arched position in said casing by the floats and adapted to sustain the weight of one of the floats on the outside of the arch.

14. A pump comprising in combination, a casing having air inlet and outlet ports and water inlet and outlet openings, valves controlling the air inlet and outlet ports, co-

acting levers pivotally mounted in said caslln ing, a pvotally mounted member connecting the said levers, means connecting the said levers and the valves controlling the air inlet and outlet ports, an upper float connectecl to one of said levers, and a lower' float connected to the other lever, the said levers and connecting member being formed in areheclpostons by said floats, the said connecting member forming an extension with one of said levers in one arched-pos- 10 lion and an extension With the other of said levers in the other arched position.

CHARLES B. ALYEA.

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