US1655621A

US1655621A - oe eoghestee

Info

Publication number: US1655621A
Authority: US
Publication date: 1928-01-10
Anticipated expiration: 1945-01-10

Description

W. A. MINOR DEEP WELL PUMP Filed Aug. 24, 1926 r 5 Rm n O1 N T R N, O W n m A m 5 ton Patented Jan. 10, 1.92s.

UNITED "STATES gas earner caries.

W'ILIJIAM A. MINOR, OF ROCHESTER, NEW YORK, ASSEGNOR '10 LUITWIELER PUMP II-TG- ENGINE COMPANY, 015 ROCHESTER, NEW YORK, A COR-PQRATION OF NEW YORK.

DEEP-WELL PUMP.

Application filed Augustfll, 1926. Serial No. 131,293.

The present invention relates to deep well pumps and more particularly to the type in which two oppositely movable plstons or buckets are employed, one of which is arranged above the other and has the operating rod of the latter extending therethrough. An object of this invention 1s to provide apiston body formed with an annular valve seat and having a guide ex tending upwardly from the body below the valve seat and upwardly through the latter, on which is guided this valve member which has a packing relation to the guide to prevent the passage of water through the valve. Another object of this invention is to provide in deep well pumps of this type an upper piston which has a tubular guide pro- 'Jecting upwardly from the body from' a point below thevalve seat around the rod of the lower piston, and on which the valve of the piston operates so that the valve is maintained in proper centered relation to the valve seat by the guide notwithstanding distortion of the rod. Another object of this invention is to provide, in deep well pumps of this type, an upper piston that is particularly adapted to 111111111111 water that contains a considerable portion of sand and one in which the valve. member has but one seat and carries a packing cooperating with a guide portion extending upwardly from the body of the piston about the rod of the lower piston. Still another object of the invention is to provide an iu per pisconstruclion in which the valve meniher has a packed relationwith a guide surrounding the rod of the lower piston, and a packing is interposed between the body of the piston and the rod below the valve so that the leakage of water around the rod of the lower piston is entirely prevented. Still another object of the inventioi'i is to provide between the body of an upper piston-and the rod of a lower piston, a packing mounted for loose movement so as to maintain a tight packing even when the body of the upper piston has been considerably worn from long use. Still another object of the invention is to provide a flexible packing at the extreme top of a piston body for contact with a cylindrical. wall above the actual body of the piston to wipe out sand or grit from the inside of the cylinder as the piston travels therein.

Cir

To these and other ends, the invention consists in certain parts and combinations of parts, all of which will be hereinafter described: the novel features being pointed out in the appended claims.

In the drawings:

Fig. 1 is a view of the fragment of a cylinder with the upper piston therein shown one-half in elevated and the other half in diametric section;

Fig. 2 is a fragmentary diametric section through the upper piston;

Fig. 3 is a section on the line 3 3, Fig. l; and

Fig. 4: is a. section on the line H, Fig. 1.

The present invention has to do with deep well pumps which employ a cylinder and at least two pistons operating therein one above the other, the lower piston having a rod extending through the upper piston and also through a hollow rod through which the up ierpiston is operated. For the pur pose of simplicity in illustration fragments only of the cylinder and the rod of the lower piston are shown, the lower piston not being illustrated. 1 indicates the cylinder and 2 the rod of the lower piston. The upper piston embodies a body 3 and'a cage which hasa screw threaded upper end 4 to which the hollow rod 5, which operates the upper piston,connects. This cage is of substantially iri'istro-cmiical form with the open ings 6 in its sides through which the wa ter may pass. The lower end of this cage has a ring 7""whieh is internally threaded to engage external threads on a reduced portion 8 of the body. This ring 7 also has an annular shoulder 9 on its ring portion 7 which forms an abutment for one side of a cup packing 12, the other side of said cup packing abutting one side of a spacing ring 10 which surrounds the body 3 and also the ring portion 7 of the cage. This cup pack ing is turned upwardly so that its upper edge is above the annular valve seat 11 formed at the upper end of the reduced portion 8 of the piston body. Thisvalve seat tapers vinwardly and as a consequence, the collection of sand about the valve seat is reduced to a ininin'nnn as the upper edge of the packing tends to maintain the inner face of the cylinder clear from sand and to deflect the sand into the path ofthe water as the latter surges through the piston body. Furltll) body extension 15.

ring 17 secured thereto.

ther the collection of sand about the free edge of the upper packing is entirely eliminated, thus preventing the latter becoming hardened and through this rendering the upper packing ineffective. Other packing rings 13 are secured about the body 3 between spacing and holding rings 14. These packing rings are of cup form and their edges turn upwardly. The packing 12 keeps the sand from collecting between these packings and the piston body.

The piston body '3 also has a central extension 15 which in this instance istubular and surrounds the rod 2 extending upwardly toward the top portion 01" the cage, this extension preferably being integral with the piston body. This guide serves to hold the valvemember and is held thereto by a spacing'ring 19 which surrounds the next packing piece 17. The latter is held in position "by an'externally threaded spacing ring 20 engaging the walls of the packing chamber and having also the upper packing piece or his upper pack- "ingring projects upwardly above the valve member-to wipe the sand off the guide extension'15, This valve member packing prevents the passagejof waterthrough the cen terot the valve member 16 about the guide and maintains a fluid tight condition be tween the valve member and the guide e):-

tension. Ttalso servesto retard the movement or the valve member. A helical spring 21 seats against the valve member 16 and the upper part of the cage to hold the valve member 16 normally to its seat 11.

With the end in view of preventing the passage otwater about the rod 2 of the low- 'er bucket through the body 3, the body 3 carries belowv the extension 15 a packing, and, inorder that this packing may adapt iitself'to the rod, notwithstanding wear and distortion between the valve body and the rod,th1s packing isnionnted to float or move horizontally and vertically. In this iiistance, the-piston body, has a packing chamberp22preterablyclosed by a ring 23 at its :bottom to hold the packing in the chamber.

The packing, in this instance, embodies a lower ring 24- abutting the bottom of the packing chamber, and forming an abutment for a packing ring 25 which is held in place by a spacingring 26 forming a seatfor a packing ring 27 in turn held in place by a spacing ring 28 which forms a seat for a packing ring 29, the latter being held in place by a retaining ring 30. Bolts 31 pass through the parts 24: to 30, inclusive, and holdthese together as a single packing body. The chamber 22 is enlarged so as to permit this packing body to rise and tall therein, also to move horizontally. The lower ring 24 held in fluid tight condition with the bottom of the packing chamber when the piston is lifting water. 7

From the foregoing it will be seen that there has been provided a piston which has a packing ring above the valve seat thereof cooperating with the walls of the cylinder of the pump and serving to prevent the ac cinnulatioii of sand about the piston body and the valve seat. The piston body has an extension preferably surrounding, the rod of the lower piston and projecting upwardly to act as a guide tor the valve memher to hold the latter out of engagement with the piston rod in order that the piston rod will not shift the valve member with rcierence to its seat due to the distortion or bending of the rod. Furthermore, when the valve member of the upper piston is guided on the rod or the lower piston, the rod of the lower piston moves relatively to the upper piston and causes a greatly increased relative movement between the valve and the rod. With this construction the valve has but a very slight relative movement on its guide so that wear on the packing is reduced to a minimum. The valve member has a packed relationship to this extension to prevent the passage of water through the valve n'iember and at the same time to act as a br he or retarder to prevent the too tree action of the valve member with reference to the piston body. A packing is interposed between the piston body and a rod of the lower piston so that the water above the valve cannot pass downwardly through the center o'lthe piston body. This latter packing is of a floating construction to adapt it sell to the distortion of the lower piston rod and to prevent wear between the upper piston and the lower piston rod atl'ecting its action.

.Vhatl claim as my invention and desire to secure by Letters Patent is:

1. In a deep well pump, the combination with a cylinder, a piston operating therein and provided with a central tapered annular valve seat at the upper end of the piston, and a valve movable toward and from a seat, of a plurality of cupped packing rings secured to the body and having their edges turned upwardly, and a packing carried by the pistion body having its free edge above the valve seat and above the upper end of the piston, said last mentioned packing being arranged above the plurality of cupped packings and acting to prevent the entrance of l fi sand between the packings and the piston body. I

2. The combination witha piston body having a reduced externally threaded extension tol-med with a valve seat at its upper end, of a cage having a ring at its lower part engaging said screw threaded'extension and formed with an annular shoulder above its lower edge, a packing separating ring surrounding the piston body and the lower portion of thering of the cage, and a packing ring secured between the shoulder on the ring of the cage and the packing separating ring and having its upper edge above the valve seat on the reduced extension and above the upper end of the piston body;

3. The combination with a piston body having a reduced externally threaded tension provided with a valve seatat its upper end, of a cage provided with a ring engaging said reducedextension, a packing separating ring surrounding the piston body, and a packing ring held against the packing separating ring by the ring of the cage and extending upwardly above the valve seat on the screw threaded exte sion of the body.

The con'ibination with a piston body having a central operating rod opening therethrough and formed with a seat, of a .aular extension aligned with said -opening secured to the valve body at its lower end and extendingupwardly from the body to the valve seat, and a valve member for cooperatingwith the scat guided on said extension.

5. The con'ihination with a piston body having a central operating-rod opening therethrough and provided with a valve seat, a ca e detachably secured to said piston body an integral extension on the valve body extending upwardly through the valve seat to a point above the connection between the cage and the piston body, and a valve member slidably mounted on said extension to cooperate with the seat.

6. The combination with an upper piston provided with a valve seat, of a tubular valve guided support hy'the piston body, a valve movable on said guide, a packing interposed between the valve and the guide, and a packing carried by the piston below the valve seat to cooperate with the rod of another piston passed through the piston and said tubular valve guide.

7. A piston of the class described comprising a body having a valve seat, a tubular guide surrounded by said valve seat, a valve movable on said guide, and a packing ar ranged to prevent the passage of fluid from one side of the piston to the other through the tubular guide.

8. The combination with a lower piston operating rod, of an upper piston comprising a piston body having an opening therethrough for the passage of a rod of a lower piston, an integral extension projecting upwardly from said body in alignment with said opening, a packing ar'anged on the body below said extension to cooperate with the lower piston operating rod, a valve seat provided on the body above the lower end or": the extension, a valve member guided on the extension to cooperate with said seat,

and a packing. arranged between said valve member and said extension.

9. A piston ot the type described comprising a piston body having an opening therethrough through which the rod ot another piston may operate, a valve seat carried by the body, a valve movable toward and from the seat on said piston, and a floating packing mounted in the piston body below the valve seat.

10. A piston of the type described comprising a piston body having an annular valve seat, a guide extending upwardly from the body from a point below the valve seat and centrally through the valve seat, a valve member moving on the guide and having its upper face formed to shed sand, and a packng carried by the valve member and cooperatingwith the guide to prevent the passage of water through the valve member, said packing having a portion projecting above the shedding face of the valve menu her to wipe the sand off the valve guide.

WILLIAM A. MINOR.