US1685650A - Pump valve - Google Patents

Description

J. M. STEIIQH "PUMP VALVE llilatented ldept..

rurale vanvri.

.application tiled llpril lll, Fieri-a1 lilo. lt'dlll.

rlllhe invention relates to improvements in pump valves designed primarily tor oil well pumps and of such construction as to permit draining' of the tubing;P when the latter is to be pulled, or tor the purpose oit washing; deposits ot foreign matter 'from the valve seat or seats lt is the object of the invention to provide a new and improved construction which will be simple and inexpensive, and may he readily operated, for the purpose ot 'forciup; the valve member or members trom the cooperating seat or seats, when it is desired to wash deposits trom said seats or to drain the tubing, preparatory to pullingthe latter.

lWith the 'foregoing in view, the .invention resides in the novel subject mattei' hereinafter described and claimed, description being; accomplished be reference to the accoinpanyingr drawing.

lHig. 1 is a side elevation partly broken away and in section showing a traveling valve constructed in accordance with my invention, the parts being in the relative positions which they occupy when the pump is in operation.

Fig. 2 is a view similar to Fig. 1 but lshowing additional parts in section and illustrating" the manner in which the valve may be forced 'from its seat. y

li`ig`. 3 is a detail vertical section partly in elevation, ot the principal portion ot the valve cage. p

Fig. l is a horizontal sectional view on line 4l-l Voit Fig. 3.

5 isa view showing both a traveling valve and a standing' valve constructed in accordance with the invention and illustratingithe manner in which the valve menibers thereof may both be opened when desired, this view beiner partly in section.

lin the drawing; above` briefly described, Vl denotes a traveling valve connected with a pump `rod llt` fand provided with cup washers W and denotes the standing1 valve secured in the well tubing.;` by appropriate paci-fers l). 'llhese packers may well be substantial duplicates ot the cup washers W but are preferably less in number, and aside :trom this diderence andv the connection C tor the pump rod lt, the standing,1V valve bl and the traveling valve 'll are ot the same construction. llllence, only the travelinut valve has been shown in detail. anl specific description oit the invention will` be coniined, to this traveling valve.

rlhe numeral G denotes a tubular body having' a valve seat i at its upper end, cooperable with a ball valve 8. Below this seat, the body o is provided with a peripheral, downwardly facing shoulder 9, and the lower portion ot said body is threaded as at 10. lBy means ot these threads, a collar 11is threaded upon the body 6, the upper end 12 of said collar constituting an upwardly facing peripheral shouldern iter said body. Below the collar 1 1, a nut 13 is threaded upon the body tl, and between said collar and body, the washers lll] and spacers lli, are mounted.

Slidably surroundinpl the upper portion of the body 6, is a valve cage 1/1 carrying the male portion olf the connection C. rllhis cage surrounds the valve tl and embodies a bushing 15 threaded into the lower end of the cage body, said bushing; slidably surrounding the tubular body 6 below the shoulder Sl and above the shoulder 12. il coiled compression spring 1o rests upon this shoulder 12 and abuis the lower end oil the bushing 15, serving to normally i'orcethe entire cage 14.-15, upwardly to the limit permitted by the shoulder t) and the upper yend oi said bushing, which end constitutes an internal, upwardly 'lacing shoulder 17, tor the valve cage.

Preferably, shoulder 9 is formed with notches 1S and the bui-Shing 15 is provided with upwardlyprojectinp' portions 19 received in said notches, so that the body (i is held against rotation within the caire 1li, when the collar 12 is rotated to adjust the spring; 16 and when the nut 13 is rotated to tightly clamp the washers HW.

'While the spring); 16, forcing upwardly upon the cage 1li and downwardly upon the tubular body @,inaintains these parts in the relation shown in llipf. 1 to permit ordinary operation of the travelingr valve, said spring also permits downward sliding ot the cage upon the body 6, upon disconnection and lowering' ol the pump rod llt and holding; the bod)r d against descent beyond a predeterinined extent, tor instance by pernfiitting1 it to come in contact withthe upper end ot the standing' valve Si. ll utilise this downward sliding" ot the caire upon the body 16, to ct't'ect unscatinir ci the valve El. 'llo accomplish this. the canje lil is ijirovided with .means tor unseating the valve when said cage moves downivardly with respect to said valve. ln

the present disclosure, this means is in the form of a finger 2O integral with the upper end ofthe cage 14 and projecting downwardly therefrom within the upper portion of one of the usual liquid escape slots 21 of said cage. This finger is inwardly spaced sufliciently from the periphery of the cage, to contact with the valve 8 and force it from its seat 7 as shown in Figi. 2, upon sufficient depression of thek cage with respect to the valve and the body 6. Thus, any accumulated matter upon such seat .may be washed therefrom by the discharge o f liquid permitted to flow through the body 6. while valve 8 is open. Moreover, if the tubing is to be pulled, this same valve-opening; operation permits the desirable draining. A

In the present showing, lowering of the .traveling valve to ay sufficient extent. permitscontact of its lower end with the cage 14 of thestanding valve S (Fig. 5), thus depressingV this cage against the action of the underlying spring; 16 to cause the finger 20 of the standing valve to open the valve member 8 of this valve. At the same time, downward sliding of cage 14; of the traveling valve T, serves to cause the finger Q0 of said traveling valve, to unscatthe valve member 8 of this traveling valve. Thus, with the valve members 0f bot-h the standing and the traveling valves held open` effective drainage and washage of accumulated matter Vfrom the valve sea-ts, is effected.

On account of the excellent results obtainable from the details disclosed, they are preferably followed. However, within the scope of the invention as claimed, variation may bevmade.`

I claim:

1. In a pump valve, a tubular body having aY valve seat at its upper end. a valve co-operable with said seat, a valve cage whose lower portion slidably surrounds the upper portion of said body, means for limiting the upward sliding of said cage on said body, spring `means acting on said cage and reacting on said body for upwardly forcing` the cage to the extent permitted by said limiting means, and means carried by said` cage for laterally forcing said valve from said seat upon downward forcing of said cage against the action of said spring,`

means.

.'2. In a pump valve, a tubular body having a valve seatat its upper end, a downwardly facing); peripheral shoulder below said .seat` and anupwardly facing peripheral shoulder below said downwardly facing` shoulder, valve co-operable 'with said seat, a valve cage whose lower portion slidably surrounds saidtnbular body above said upwardly facing shoulder` said cage being provided with an upwardly facingr internal shoulder normalty abutting said downwardly facing shoulder of said body to limit upward sliding` of the cage, a coiled compression sprint:y surrounding said body and contacting.l with the upwardly facing' shoulder thereoll and the lower end of the cane to hold the latter in normal position and to permit downward sliding of said cage from said normal position. and means carried hy said cage for laterally forcing` said valve from said seat upon depression of said cage.

3. In a pump valve, a tubular body having a valve seat at its upper end and a downwardly facing# peripheral shoulder below said seat. a collar threaded on said body below said shoulder. a nut threaded on said body below said collar, tubing-engaging means on said body confined between said collar and said nut, a. valve cage whose lower portion slidably receives the upper portion of said body, said (faire embodyingr a bushing at its lower end slidably surroundingr the body between said shoulder and said collar. a coiled compression spi-innr resting' on said collar and abuttingr said luishin;Ir to yieldably hold the cage with its bushiiu,r against said shoulder, and means carried by said cage for laterally forcing said valve from its seat upon depression ot said cage.

1. A structure as specified in claim 3; said bushing and said shoulder havingr interfittine' means for holding' said body against rotation within said cage when turning said nut or said collar.

In a pump valve, a seat-engaging valve member. a` cage surrounding;r said valve meniber and depressible in its entirety with respect to said valve member, and means carried by .said cage for unseating` said valve member upon depression of said cage.

6. In a pump valve, a seat-engagine,r valve member, a cage surrounding said valve member and depressible in its entirety with respect to said valve member, and a downwardly projecting' linger rie'id with the upper end of said cage for unseatingl said valve member upon depression of said cage.

7. In a pump valve, a scat-engaging valve iember, a cage surrounding,r said valve lnember and depressible in its entirety with respect to said valve member, and a downwardly projecting finger integral with the upper end of said cage for unseatine' said valve member upon depression of said eagle.

In testimony whereof I have hereunto alixed my signature.

i JOHN M. srnmon.

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