US1723162A - Deep-well pump - Google Patents

Description

T. S. HARRIS DEEP WELL PUMP Aug. 6, 1929.

Filed April '7 1924 u I i jrzveiz for m x/z Patented Aug. 6, 1929.

UNITED STATES 'IHADDEUS 8. HARRIS, OF WAVERLY, ILLINOIS.

DEEP-WERE. PUMP.

Application filed April 7,

The purpose of this invention is to. provide a deep well pump in which the usual plunger rod connection from the head of the pump to the well element is not required.

This pump may be used either as a sin le acting pump or as a double acting pump y making slight variations as mentioned herein.

The drawings show in Figures 1 and 2 verm tical sections on a median line of the pump head and well element, the well element being drawn on a larger scale than is the pump head.

Referring to the drawings, 1 is a cylinder 15 in which the plunger 2 moves, being operated by plunger rod 3, which may be driven by either manual or power means. A port 4 in cylinder 1 is connected by a pipe line 5 with the port 62 in the well element. A port 20 6 is connected by a pipe line 7 to port 63 in the well element, if it is desired to use the pump as double acting. If, because of bemg too heavy to operate, it is desired to use the pump as single acting with only one half the capacity, plug 8 is removed from port 9 and placed in port 6, and pipe line 7 connected to port 8, and valve 20' is closed. Pipe 7 then becomes an air chamber. Or, plug 8 may not be' reinserted in port 9, in which case, since valve 15 is not air tight, pipe 7 becomes a reservoir of the stand pipe type which yields a pressure at its lower extremity, simply by virtue of the weight of its water column.

A valve 14 moves in an adjustable guide 10 and is held closed under pressure of spring 11, the tension of which is varied by screwing the adjustable guide up or down as desired. A hand valve 20 provides for closing the passage 12 when the pump is used as single acting as already mentioned. A valve 15 movesin the adjustable guide 13 and closes under influence of gravity only.

Valve allows the discharge from valve chamber 22 to flow to the air reservoir 23, from whence it is discharged by the port 21.

The wall of cylinder 1 is preferably cut away slightly at 18 to allow water to flow past the plunger when in that. extreme position, as shown in the drawing. A passage 19 through plunger 2 contains a ball valve which is held closed under more or less pressure.

A diaphragm chamber 1.6 and valve SEQ provide for replacing from the storage tank,

1924. Serial No. 704,818.

not shown, any water that may be removed from cylinder 1 and pipe line 5, due to leakage past the check valve 46 of the well element, while the pump is idle. This diaphragm chamber comprises a cylindrical casing 16, across the top of which is a flexible diaphragm 24 secured by disc 25, as shown. A passage 26 connects air chamber 23 with a valve chamber 27 cast in cylinder 16. A port 28 in the bottom of chamber 27 is closed by valve 29, which is fixedly connected to diaphragm 24. A spring 30 normally holds valve 29 closed under suflicient pressure to prevent water flowing from the air chamber 23 to the valve chamber 22, but in case the pressure in valve chamber 22 and diaphragm chamber 16 falls materially below that of the atmosphere the diaphragm is thereby caused to be depressed and open valve 29, allowing water to flow from chamber 23 to valve chamber 22.

Referring to Figure 2, 31 is a tubular casing closed at the ends by castings 32, 33. Casting 32 also carries an inner casing 34 in which plunger 35 moves. Casing 34 is preferably composed of an upper and lower portion joined by a ring 36. A support bar 37 rests upon ring 36, and carries plunger rod 38. Plunger rod 38 carries plunger 35 and valve 40, both of which are fixedly mounted on rod 38.

The head of plunger rod 38 supports a spring 43 which is supported at the lower end by bracket 37 which also supports a stifl" coil spring 44, which is shorter in length and forms a yielding stop to the downward movement of plunger 35.

Valve 40 preferably is composed of two parts, the lower disc 45 which is preferably of leather or rubber, and the upper portion of metal and comprising an upper winged portion and a lower disc 60' which engages the disc 45. Disc 60' is of such a diameter that it iits closely in port 45'.

A check valve 46 is attached to the casting 33' by .1 tuhuiar extension. Casting 32 contains a passage 47 and which, together with the space between casings 31 and 34 constitotes a pal-Rage from the bottom of cylinder 34 to the top of it, outside the cylinder a passage 48. A valve 49 in passage 47 closes by gravity and controls the passage from the bottem oi cylinder 31, between casing 31 and he inner casing 34. This passage is connected through port 63 at the top, to a pipe line 7 which passes to the head of the pump as already described.

Passage 48 contains a valve 50 which preferably closes under more or less spring pressure, the degree of pressure being determined by the operating conditions. Passage 48 connects with passage 51 which is a continuation of the inner cylinder 34, and which is connected by a pipe line 5 to the head of the pump as already described. The dimensions of spring 43 depend upon the vertical distance between the head of the pump and the well element and upon the length of stroke desired. If the vertical distance is feet spring 43 must be of such strength that it will operate the plunger 35 against a pressure of 20 pounds per s uare inch which pressure will support a cdlumn of water 40 feet in height with a safe margin. The other 20 feet are taken care of by atmospheric pressure or ordinary suction.

lhe operation of this pump as a double acting pump operating on a 60 foot lift is as follows:

Cylinder 1 and pipe 5 having been filled with water by the removal of valve 14, plunger 2 is moved to the right. Since the operating capacity of cylinder 1 is equal to that of the well element cylinder 34, plunger 35 is driven downward to its limit of movement by the water which is moved before plunger 2 and through pipe 5. As plunger 35 moves downward valve 46 closes and the water under plunger 35 is driven through valve 49 into pipe 7. While plunger 2 is moving to the right valve 14 normally remains closed, the tension of spring 11 being made such that the valve will remain closed against a pressure that will cause plunger 35 to be driven downward.

If plunger 2 is now moved to the left a partial vacuum is produced behind it. This supplementedby the reaction lift of plunger 35 causes the water in pipe 5 to move upward and fill cylinder 1. At the same time check valve 46 opens and valve 49 closes and water flows into the lower part of cylinder 31 from the well. As plunger 2 again moves to the right, plunger 35 is again forced to move downward and force the water under it into pipe 7. Succeeding strokes cause the water to rise in pipe 7 until it lifts valve 15 and fills valvechamber 22. It is then forced through valve 20 at each stroke of the plunger 2 to the left.

There is of course more or less leakage past plungers 2 and 35 which would, if not replaced soon interfere with the proper workin of the ump. In most instances this lea age tend to lessen the amount of water between the two plungers so that plunger 35 would soon come to reach its highest point before the movement of plunger 2 to the left was completed. As soon as this occurs it produces a greater degree of vacuum behind plunger 2 and as it reaches the cut away portion 18 of cylinder 1 water from valve chamber 22 flows past plunger 2 to fill the low pressure space behind it. Also valve 50 may open and allow water from pipe 7 to flow to pipe 5. In these ways sufficient water is always maintained between plungers 2 and 35 to give the plum er 35 a full stroke. Should plunger 35 for any reason fail to return with the proper degree of force too much water might flow into the space between the plungers, so that on the return stroke the pressure in cylinder 1 would become excessive were it not for valves 14 and 19 which in this instance would open and allow the excess of water to flow to valve chamber 22. In these ways the volume of water between plungers 1 and 35 is always just suflicient to give plunger 35 a full stroke.

Should it be desired to use the pump as single acting, as already described, with one half the capacity, valve 20 is closed and plug 8 is removed from port 9 and pipe 7 connected to port 9. The operation is then slightly different. The spring tension on valve 50 is then made light and the water that is driven into pipe 7 -feeds back into pipe 5 through valve 50 instead of being discharged into valve chamber 22. It is caused to do this by the pressure which accumulates in pipe 7. This pressure may arise either from the weight of the column of water in pipe 7 or from compression of air between this column of water and the valve 15 which in this instance closes a ainst the flow or to both combined. Since tIiis valve is not supposedly air tight this pressure is usually due mostly to the weight of the column of water which, when the column has reached a level of about 20 feet below the level of the head of the pump, becomes so great that on the up stroke of plunger 35 it forces its way through valve 50 supplementing the flow through passage 51 to such an extent that plunger 35 does not return to its topmost positlon. Therefore on the return stroke of plunger 2 plunger 35 is moved to its lowest limit before the movement of plunger 2 is completed and valve 14 or 19 is caused to open and allow water in cylinder 1 to flow to valve chamber 22. Since spring 43 is adapted to lift a column of water which extends only to a vertical height of about 20 feet below the head of the pump it will be seen that when the water level in pipe 7 rises materially above this level the flow through valve 50 will be so great on the up stroke that plunger 35 will not move greatly from its lowest position, hence on the down stroke it will discharge but little water into pipe 7. This lowers the water level in pipe 7 and automaticall maintains it at such a level that it supplies one half the water required at each up stroke to fill the space behind been mentioned valve 40 acts as a sto plunger 2. It also automatically makes the lunger operate in the lowest half of its ll stroke and makes it give such support to the column of water in pipe 5 that after the movement of plunger 2 to the right is one half completed the water in cylinder 1 is forced through valves 19 and 14 to valve chamber 22 where on the return stroke it is driven to discharge chamber 23.

As has'been mentioned should valve 46 leak somewhat, allowing the water to be drawn from cylinder 1 when the pump was idle the pump would not operate properly until it was replaced. To prevent trouble from this source I provide the valve 40 at the bottom of cylinder 31. As has to the upward movement of plunger 35. ince in case of a 60 foot well the spring 43 gives a minimum upward pressure of 20 lbs. per

are inch of plunger area it will be seen t at the total pressure with which valve 40 is closed is much more than enough to support the column of water in pipe 5, dependmg upon the diameter of plunger 34. To

prevent injury to valve 40 by the frequent application of this high pressure the lower part 60 of guide 60 is of such diameter a that it ractically closes port 45 considerably be ore valve 45 seats. As a result the valve 45 does not seat at all in ordinary operation, but when the pump is idle the leakage past plunger 35 and through the air port 61 allows the valve to seat under great pressure.

I claim as new:

1. In a deep well pumpthe combination of a pump head, comprising a cylinder, a plunger in said cylinder, means for operatmg said plunger, a port in the wall of one end of said cylinder, said port being connected by a pipe line with one port of a well element, a passage from this end of said cylinder to a valve chamber adjacent to said cylinder, a valve in said passage and an adjustable yieldable resistance adapted to hold said valve closed, a passage from the other end of said cylinder to, said valve chamber,

an enlargement of the cylinder wall at this end of said cylinder to allow a flow past said plunger when in this extreme position, a passage from said valve chamber to a discharge chamber, a valve in said passage, a diap ragm chamber communicating with said valve chamber, a passage from said discharge chamber to a valve port in said diaphragm chamber, a valve adapted to close said valve port, said valve being operably connected to said diaphragm, a spring disposed to hold said valve closed, a third intake port in said valve chamber, said port being connected by a pi e line to a port in a well element, a valve in said third intake port, a well element. comprising a cylinder, a plunger in said cylinder a yieldable resistance disposed to hold said plunger toward one end of said cylinder, a port in the head of this end of said cylinder, said port being connected to a pipe line extending to the cylinder in the head of the pump, a passage from the opposite end of said cylinder, sa1d passage being connected by a pipe line to a valve chamber in the head of the pump, also a passage from this end of said cylinder which is adapted to communicate with the water of the well and a valve in said passage. i

2. In a deep well pump, a cylinder, :1 plunger in said cylinder, means for operatling said plunger, a discharge passage and valve from said 0 linder, an enlarged portion of said cylin er which allows water to flow past said cylinder when at one extreme position, a passage through said plunger, a valve in said passage, an intake port in the wall of said cylinder at the end opposite the enlarged portion, a second cylinder in the well, a plunger in said second c linder a yield-able resistance adapted to old said plunger toward that end of said cylinder, a passage from this end of said cylinder, said passage communicating with the said intake port of said first cylinder by a pipe line, a passage from the opposite end of said second cylinder to the water of the well, a valve in said passage, also a passage from this end of said second cylinder to the op posite end of it, two valves in said passage, a port into said passage between said valves,

a pipe line extendin from said port to the top of the well, an a valve on the upper end of said pipe line.

3. In a deep well pump the combination of a cylinder, a valve chamber adjacent to said cylinder, an open passage from said cylinder to said valve chamber, a discharge chamber adjacent to said valve chamber, a diaphragm chamber communicating with said valve chamber, a valve port 0 ening into said chamber, a passage from sai valve port to said discharge chamber, a valve adapted to close said valve port, a yieldable resistance adapted to hold said valve closed, a diaphragm, one side of which is exposed to atmospheric pressure and the other side to the pressure within the diaphragm chamber, said diaphragm being operably connected to said valve.

4. In a deep well pump a well element comprising a cylinder, a plunger in said cylinder, a ieldable resistance adapted to hold said unger away from one end of said cylin er, an intake passage into said end of said cylinder, a valve adapted to close said passage, said valve being operably connected to said plunger, a second valve in said passage, which valve is not connected to said plunger, a passage just outside said cylinder, said passage joining the two ends of said cylinder, two valves in said passage,

disposed in series, a port in the wall of said passage, said port opening into said passage at a oint between the said valves.

5. En a deep well pump, a well element comprising a cylinder, a plunger in said cylinder, a spring disposed to move said plunger toward one end of said cylinder, a passage from that end of said cylinder away rom which said plunger is moved by said spring, said passage being adapted to communicate with the Water of the well, a valve in said passage, a second passage from that end of said cylinder away from which the plunger is moved by said spring, said passa e connecting with the opposite end of said cylinder, two valves in said passage, an opening from said passage at a point between said valves and an opening from that end of said cylinder toward which said spring moves said plunger.

6. In a deep well pump, a reactive well element comprising a cylinder, a plunger in said cylinder, a yieldable resistance disposed to hold said plunger away from one end of said cylinder, a closed passageway through that head of said cylinder away from which the plunger is held, said passageway being disposed to communicate with the water of the well, a valve in said passageway, a second closed passageway rom said end of said cylinder, said passageway extending just outside the cylinder to the op osite end of said cylinder, two valves in sai passageway, said valves being disposed separately and in series in said passageway, a port in the wall of said passageway, said port opening into said passageway at a point between the said two valves, a reservoir of variable capacity bein connected to said port, said reservoir being so formed that it constitutes a yieldable resistance to the How from said passageway to said reservoir.

7. In a deep well pump, a reactive well element comprising a closed chamber, a mom able partition across said chamber, a yieldable resistance disposed to hold said movable partition away from one portion of said chamber, a closed passageway through the wall of said chamber away from which the movable partition is held said passageway being disposed to communicate with the water of the well, a valve in said passageway, a second closed passageway from said portion of said chamber, said passage extending to, and communicating with, the opposite portion of said chamber, two valves disposed in said passageway, said valves being disposed separately and in series, a port in the wall of said passageway, said port communicating with said passageway at a point between said valves, said port being adapted to be connected to a closed reservoir of variable capacity, said reservoir be ing so formed that it constitutes a yieldable resistance to the flow from said passageway to said reservoir.

THADDEUS S. HARRIS.

CERTIFICATE OF CORRECTION.

Patent No. 1, 723.162.

Granted Adguet 6, 1929. m

THADDEUS S. HARRIS.

It is hereby certified thatermr appears in the printed specification of the above numbered patent requiring correction as follows: Page '1, lines 105 and 106, strike out the words "a passage 48" and insert the same to follow after the word "and" in line 102; and that the said Letters Patent should he read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 22nd day of October, A. D. 1929.

(Seat) M. J. Moore. Acting Gonlnissioner of Patent;

CERTIFICATE OF CORRECTION.

Patent No. 1,723,162. Granted August 6, 1929, to

THADDEUS S. HARRIS.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 1, lines 105 and 106, strike out the words a passage 48" and insert the same to follow after the word "and" in line 102; and that the said Letters Patent should he read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 22nd day of October, A. D. 1929.

M. J. Moore, (Seal) Acting Commissioner of Patents.

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