US1408092A - Reciprocating pump - Google Patents

Description

J. D. KELLER.

RECIPROCATING PUMP.

APPLICATION FILED MAYH, 1921.

Patented Feb. 28, 1922.

Inventor .fo/zn D.Keller zen of the United States,

. ing application entitled Pum with which the JOHN D. KELLER, OF SACRAMENTO, CALIFORNI OFFICE.-

REGIPROCATIN G PUMP.

To all whom it may concern:

Be it known that JOHN D. KELLER, a citiresiding at Sacra- Sacramento and of California, has invented new and Improvements in Reciprocating mento, in the county of State useful Pumps, of which the following is a specifi- I cation.

, This invention relates to a reciprocatin pump of the class described in my co-pen bearin Serial ctober' 19, 1920.

It is a principal object of the present invention to rovide a reciprocating pump especially adiipted for use in deep wells and which operates a minimum number of movo. 417,997, and filed ing parts traveling through a short stroke I to produce a maximum performance of the .pump.

The present invention contemplates the use of a pump cylinder adapted to be longitudinally positioned within the lgwer end of a well casing, said cylinder carryin pum chambers and passage ways throng whic water may be forced to circulate by a plurality of simultaneously moving pistons.

The invention is illustrated by way of example in the accompanying drawings in which.

Fig. 1 is a fragmentary view in vertical section, showing the application of my invention to a dee well casing. Fig. 2 is ane arged fragmentar view in central vertical section showing t e pump present invention is concerned.

Fig. 3 is a viewv in transverse section through the pump as seen on the line 33,

i 2. Fig. 4 is a view in transverse section throughthe pump as seen on theline 4 4 of Fig. 2.

Referring more particularly to the drawing, 10 indicates a well easing into the lower end of which a pump structure 11 is lowered. This structure comprises an outer cylindrical casing 12 connected at intervals throughout its length by spiders 13, which members carry cylinder head 14. Secured to the opposite sides of the cylinder heads are piston cylinders 15. As shown in F1g.- 2 of the drawings, there are three of these cylinders indicated as A, B, and C. The upper end of cylinder A is closed by a head 16 through which a piston rod 17 reciprocates. This Specification of Letters Patent. Application filed May 11, 1921.

\shaft 17. Th g celves the lower end ofa .through which the piston the cylinder pistons.

spiders Serial No. 468,600.

head is designed to form water passage ways 18 and 19 1n communication with valve open ngs 20 and 21 respectively. The gravity operated valves 22 and 23 are mounted over these openings and alternatively seat thereon as the ,pump operates. The openings 20 are formed through a valve plate 24 which is secured to the member 16 and forms an additional bearing for the e upper end of this plate repump casing 25, rod 17 extends.

he various piston heads 14 are formed with packing glands 26 through which the rod 17 passes to, receive the lower piston 27. This piston is mounted within the cylinder C. A similalri3 piston 28 is mounted within 17, while a piston 29 is mounted within the cylinder A and connected with said rod. In order to facilitate-in the removal of the pistons and the dismantling of the the pistonrod 17 terminates within t e upper piston 29, and supplemental rods 17 are successivel connected with the other his also makes it ossible to readily increase the'capacity o the ump by adding additional units thereto. ll of these piston connections are fixed by lock nuts 30. The lower end of cylinder C is fitted with a cylinderhead 31, which also forms a part of a valve caslng through which liquid may be drawn into the ump structure. This lower casing is formed with separate chambers 32 and 33, and induction ports 34 and 35'respectively. These ports are alternately closed byvalve members 36 and 37.

By examining the structure disclosed in the drawings, it will be seen that the upper cylinder head 16, the lower cylinder head 31, the intermediate heads 14, the casing lengths 12, and the piston cylinders, as well as their rods, are assembled to form a pump of desired capacity and are held in their assembled position by stay rods 38. These rods extend down through the casings 12 and are secured to the structure of the upper cylinder head 16 and lower cylinder head 31.

By reference to Figs. 3 and 4 it will be noted that the annular passage formed be tween the piston cylinders 15 and the outer casing 13 are divided into two compartments 39 and 40. These com artments are divided lengthwise by the spi ers 13. Each of the and connected with the rod is fitted witha pair of circular ports Patented Feb. 28, 1922. p

41 through which communication may be established between the various cylinders and the well casing. Sets of cylinder ports 42 and 43 are formed at the opposite end of the piston cylinders 15 and upon opposlte sides of the cylinder.

The operation of the present invention is as follows:

Assuming, for example, that the piston rod 17 is on its downward stroke, any liquid within the various cylinders will be forced outwardly through the lower cylinder ports 42 and into the compartments 39 between the cylinders and the casing. This action will close the lower valve member 37, preventing downward movement of the liquid and will thus force it upwardly through the series of compartments 39 to pass out through the valve opening 21 as the valve member 23 is lifted. \Vhen the lower end of the piston stroke has been reached, suitable mechanism will reverse the direction of the movement of-the piston rod 17 and will cause the liquid which has been previously been drawn in from the well, through valve opening 34, the vertical passage ways 40 and the ports 43 to be forced out through ports 43. This liquid will then travel upwardly, lifting the valve member 22 and passing out through the well casing, at the same time closing the valve 36. Simultaneously with this action, the pistons will exert a suction stroke to draw liquid in through the cylinders through ports 42 and the valve opening 35. It will thus be evident that alternate reciprocation of the pistons will produce a continuous pumping action.

VVhileI have shown the preferred form of my invention as now known to me, it will be understood that various changes may be made in the construction, combination and arrangement of the parts by those skilled in the art without departing from the spirit of theinvention as claimed.

What I claim is:

1. In combination with a. well casing, a pump adapted to be disposed in an operative position therein, said pump comprising a plurality of cylindrical casing sections substantially fitting within the well casing and disposed in longitudinal alignmentyintermediate spiders between the various sections; cylinder heads formed by the center.

in longitudinal alignment; packing glandsformed by the center of said pump heads; a piston rod slidable through said glands; a piston withineach of said cylinders and secured to the rod; vertical partition walls dis osed diametrically opposite each other an dividing the space between the cylinders and the easing into two vertical passa e ways; ports at the tops and bottoms of tie cylinders and on opposite sides thereof to separately communicate with the passageways; valve casings mounted upon the outer ends of the end cylinders, said casings being formed with two compartments, a-compartment of each casing being complementary to the longitudinal passage-ways between the cylinders and their casings; a valve in each of said compartments adapted to alternately open as the pistons are reciprocated; and means for adjustably holding the various cylinders and casings in their assembled positions.

2. In combination with a well casing of a pumping apparatus adapted to be disposed in an operative position adjacent the bottom of the well, the said apparatus comprising a cylindrical exterior casing having an exterior diameter slightly smaller than the inside diameter of the well casing, the said exterior casing formed of a plurality of sections having transverse spiders connecting the same, head members enclosing each of the ends of the pump casing, annular shoulders formed on the head members and the spider members and'being materially less in diameter than the exterior casing, pump cylinders sections disposed between the spiders thereby forming a plurality of aligned pump cylinders, the said cylinder sections secured to and aligned by the annular shoulders of the spiders and the heads thus forming a chamber between the cylinder and the casing, pistons reciprocal in the cylinders and a sectional piston rod connecting the pistons and extending upwardly through the Well, diametrically opposite and longitudinally extending webs dividing the annular chamber formed between the pump cylinder and the pump casing, a pair of flap valves in each head, one pair being in communication with the other, inlet and discharge apertures formed in opposite ends of the cylinders and each communicating with different head valves, and stay rods and nuts extending longitudinally of the apparatus and uniting and securing the various sections together.

JOHN D. KELLER.

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