US1418043A - Pump valve - Google Patents

Description

G. S. WILCOX.

PUMP VALVE.

APPLICATION FILED JUNE I7. I920.

Patented. May 30, 1922.

SH01/umso GEORGE s. WiLcoX, or EUEKBUENETT, TEXAS. y

4 Specification of Letters Patent. Paitnjd 30,

Appllcationle-d June 17, 1920. lSerial No. 389,724, .Y

To all whom t may cof/were:

Be it known that I, GEORGE S. Wi-LCoX,

a citizen ot the United States, residing at Burkburnett, in' the county of VVicliitarand State of Texas, have' invented certain new and useful Improvements in Pump Valves; and l do declare the following to be-a full,

clear',-andiexact description of .the invention,

such as `will enable others skilled iii-the art to which it appertains to make and? use the rhis `invention relates -to an improved valve and one object of the invention-is to 'provide the valve with a construction in which the inovablevalve `member `may be driven back upon its seat `in case the .valve member beconies'stuck in the valve cage.

Another object of the invention is to so construct the valve that the improved cage and valve striking follower may be connected with a conventional construction of pump head, the follower being yieldably reciprocating valve strikes the ,follower of 'the standingvalve a relatively severe blow.

Another. object of the invention is to so construct this device that sand, fragments of rock, pieces of cup which are formed'ot leather and other material which mayvcause `prevent it from seating the valve tobe held in a raised position and properly may bevcut loose. w .i L

. This invention is illustrated in the acconi panying drawings, wherein: l

. Figure l is aview showing the pump barrel or tube :in vertical section and astandi-ng` valve and reciprocating valve positioned therein shown in elevation.` j

Figure 2 is a view similar to Fig. I showelements of l"to strike the: standing valve.

i-ngthe standing valve and reciprocating val-vefpa'rtially in elevation and partially i-n longitudinal or vertical section, j I Figure 3 is a transverse sectionalview taken allongthe line 3-3 of'Fig. 2, and` i Figure' 4L i's an enlargedview showing the l the improved-device invertical section. a y. y f

yThis valve seating device may be used iii :connection with' a standing valve fl;4 or with a reciprocating piston 2, the standing valve and' pump head being provided with a conventional construction and each including theus'ual valve seat 3 upon which theball valve '4l rests when in a 'closed position. .The pump head also includes the usual striker 5..

lThe standing valve is positioned in the `lower portion of the pump barrel 6 and the reciprocating pump 'head will beconnected with the* pump rod 7 thIo-ughj'the mediumv oli'- a coupling block 8 as will bey hereinafter morel y specifically brought out.` y In pumps such as are now in useyit-is customary to provide a valve housing for `the standing valve so` that the valve ball will be restrained in its movement and 'guided during its movement under action of the oil or other` liquid'which is drawn through the standing valve by the reciprocating piston.

.lWlien thick oil is being pumpedfthis oil will Acake in Ithe valve cag'efand cause the ball valve to stick in the cage out got engagement with its seat 3 andit also often happ. -pensth'at sand and small portions otrock lor pieces ot leather from the washers vol -the standing valve will adhere to the Ivalve 4ballor will clog-the valve cage beneaththe valve ball andthus preventl this valve ball from seating upon its seatvB. It is. thenk necessary to lower the pump 'rod so'that Athe reciprocating pump head yextends down into the tubeoi" barrel 6 a sutlicient distance `pump rod is lowered, the proper amount and 'fthe striker 5V strikes the "up-per end ofthe valve cage, it 'ca-uses the valve ball to vibrate ,a vcertainamount and this will, in some'cases, cause the valve ball toy drop back upon its* seat or it the.' cage is: clogged, the vibration will in some cases'be suiiicient to cause ythe obstruction to workloose. At 4other times` this is not effective in clearing the standing l/Vlien the i und . valve or piston in case it is the piston which has become clogged, and it is then necessary to witlidrawthe pump rod and piston from the barrel and then lower a fishing tool and withdraw the standing valve. This requires a great deal of time and is veryexpensive and therefore in order to permit the cage lof the standing valve or piston to be cleared while still in the barrel 6, this improved con` struction'l has been provided.

1n A.this construction7 the usual cage'is re-rv moved and a cage 9 put in place. This cage 9 is somewhat longer than the usual cage and `has yits opening 10 unthreaded instead of being threaded'for receivingl the threaded f portion of a `fishing tool. A follower 11 extends through the threaded yopening 10 .lin thelieadof this cage 9 and has its lower end y provided with a `cupf12 which limits upward movement of thefollower through the opening. `This cup is of sufficient size to have free sliding movement in the cage and 1s Aformed as a cup instead of a solid head so that a cutting edge 13 yis provided which will engage the valve ball and serve to cut n sand and'other material from' the ball. The upper end portion of the follower is threaded as'sliown at ll and the threaded Aupper end of the follower for the reciprocating pump head is screwed into a threaded opening 16 formed in the block 8 thus releasably d connecting the piston-with the block. The

' the crown 15 and the upper end of the cage upper end of the follower for the standing valve is. screwed into ya threaded opening formedy in the lower portion of a crown 15 which crown is provided with a threaded opening 17 to receive the threaded end portion of a fishing tool. A spring 18 which is a relatively light spring is positioned upon the follower of the standing valve'between .are permitted of longitudinal sliding movement, a greater force will .be required to vmove the follower of thepiston than will be standingv valve. y y

When this device 1s r1n use, the standing required for moving the follower of the valve is positioned in the lower portion of `the pump-.barrel vand the reciprocating piston will be connected with the lower section of the pump vrod by'screwing thev threaded Vend portion oftheblock 8 into the socket 4of the *pump rod section. The. pump will, be operated inthe usual manner with'the piston reciprocating in the pump barrel andthe oil or `other liquid first passing through the standing valve 1 and then throughy the re-v ciprocating piston which serves to lift the oil inthe pump barrel and force the same out through the upper end of this pump barrel.

1f the standing valve becomes choked, by

heavy oil .or becomes clogged by sand or any y other material, the valve ball'will not seat properly. upon its seat and the pump rod canl then belowered into the Well a suflicient ydistance to permtthestriker to engage the crown 15` The pump will then be operated in the usual manner and as it reciprocates,

the striker will strike the crown and drive the follower 11 of the standing valve downwardly againstthe action of the spring 18. The c up or head of this' follower will strilre the'valve ball and thus drive the ball down'- wardly towards its seating position.I `The passage of the fluid throughthe standing valve will tendv to rotate the valve ball and thus sand .and other substances which may away `by the cutting edge 13. Pieces of leather and other material in the lower portion of the cage or wedged between the valve ball. andthe arms of the cage will not serve vbe adhered to the valve ball will. be cut4 i to prevent reseating of the valve, as this device does not depend simplyupon vibration but depends upon a positive blow delivered to the valve ball. By having the spring 19 relatively heavy vthe striker 5 may strilre the crown andrimpart movement to the plunger of the standing valvewithout the plunger of the pistonbeing moved longitudinally through-the valve cage thereof and further lwhen the pump is in operation, the follower of the'piston will be'prevented from having longitudinal sliding movement lwhich might interfere withv proper pumping operations. When it is necessary to remove an obstruction in the valve cage of the piston, it is Y.

simply necessary to permit the pump rod to extend'down into the pumpy barrel a greater extent than in the previous case.v Therefore, the follower ofthe standing valve will be moveddownwardly toits full extentand a continued downward movement of thev pump rod will cause the follower of the piston to move downwardly 'againstthe action of the `.Spring 19. VThe head of this follower will,

therefore, engage the valve ball ofthe piston and obstruction in the. cage of the piston land the valve ball therein. caused to seat properly. 1t has been stated that this will be used in connection with, a standing valve and piston having a valve. ball but it.

is'lto be understood that this device vcan be used inlconnection. with any type ofl .movable valve where the valve is positioned in the valve `cage for vertical movement therein. 1t will thus be. seen that with this device the valve cage' of the standing` valvev or piston can be very easily cleaned and tlie valve caused to seat-properly without it being necessary to remove the pump rod, pistonk andl standing valve from the pump barrel. v

While this, invention, is particularly adapted for use 1n connection with deep Well pumpssuch as are used in oil Wells, it will be understood that the invention may be used in conection with various kinds of pumps. It will` be further understood that various ChanOe's in the form, proportion and arrangement of parts may be resorted vto Within the spirit and scope of the invention.

l claim:

l. fr structure of the character describedl including a standing valve having a movably mounted valve member, a piston slidably mounted above the standing valve and including a movablel valve member, means for positively engaging and moving the valve memberL of the standing valve into a closed position yieldably held out of engagement with the valve member and positioned for engagement by the piston, and means for moving the valve member of the piston to a closed position yieldably held out of engagement with the valve member.

2. ln a structure of the character described, a standing valve having a movably mounted valve element, a slidably mounted follower yieldably held out of position" for engagement With the valve member, a reciprocating piston slidably mounted above the standing. pump valve for engaging the follower and moving the same to positively engage the valve member', the piston including .a valve cage, a valve member movably mounted therein, a follower slidably mount-k ed ior movement into and out of position for engaging the valve member oit the piston, a block carried by the follower of the piston for connection with a pump rod, and resilient means positioned about the follower or' the piston and engaging the block to yieldably retain the follower in a raised position.

3. A structure of the character described' comprising a standing valve including a movable valve member, means for returning the valve member to a closed position when held out or a closed position7 a piston for imparting movement to the last mentioned means and including a movably mounted valve member, and means for returning the valve ol the piston to a closed position When held out of a closed position, the last mentioned means. being adapted for connection with a pump rod and being yieldably held in an inoperative position;

4. A piston having a movably mounted valve element, slidably mounted means for returning the valve element to a closed position When held' out of a closed position, means for connecting the last mentioned means With a pump rod, and means.' for yieldably retaining the valve returning means in an inoperative position.

5. In a pump, the combination of a pump barrel, a reciprooatory piston arranged 1n -A the barrel, a check valve in said piston movable toward and from its seat,and valve reseating means carried by the piston and normally inactive during the operation of the pump, said valve reseating means being operable from the exterior of the pump barrel by movement of the piston beyond its normal stroke for engaging the valve and forcing it positively toward its seat.

In testimony Whereorl I have hereunto set my hand.

GEORGE S; WILCOX.

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