US2220392A - Pump valve - Google Patents

Description

Nav. f5, 1940.

J. H. BUTLER PUMP VALVE Filed June 27, V1939 nven'or Patented Nov. 5, 1940 UNITED STATES PUMP VALVE Joseph H. Butler, Tyler, Tex., assigner of one-half to Dan R. Boisseau, San Antonio, Tex.

Application June 27, 1939, Serial No. 281,463

1 Claim.

'Ihis invention appertains to new and useful improvements in valve structures and more particularly to a pump valve such as is used in oil well pumps.

The principal object of the present invention is to provide a valve structure of the character stated which in operation will crush and pulverize sand to the end that the existence of sand in the pump cannot be detrimental to its proper operation.

Another important object of the invention is to provide a valve which is positive acting and susceptible t only a minimum amount of wear, and which in use requires only infrequent repairs and replacements.

These and other objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawing:

Figure l is a side elevational view of the valve.

Figure 2 is a side elevational View partly in section.

Figure 3 is a perspective View of the packing sleeve.

Figure 4 is a plan view of the bottom cap showing the valve seat.

Referring to the drawing wherein like numerals designate like parts, it can be seen that the valve assembly consists of a barrel 5 having a head portion 6 through the upper tapered portion of which ports I are formed and from the upper end of which the threaded shank 8 extends. This, of course, connects to the usual pump rod. The barrel 5 where it merges with the head 6 defines the shoulder 9 which acts as a stop for the slide collar I0 to prevent wear on the split sleeve II.

This sleeve II which is provided with a wearresisting metallic liner I2 is split longitudinally as shown in Figure 1 and each end portion is provided with a tongue I3 which interlaps the complementary end portion by being disposed into a corresponding recess I4 therein.

The lower end of the barrel 5 is formed with external threads for accommodating the internally threaded bottom cap I5. The side wall of this bottom cap I5 is formed with vertically extending ducts I6 opening through the upper beveled seat forming upper edge Il and through the bottom of the cap I5 as is clearly shown in Figures 2 and 4 of the drawing.

Numeral I8 denotes the annular valve element which is provided with a beveled bottom face to match the beveled seat I1. When the cap I5 (Cl. S-225) 5 An apertured lug 20 is provided on the bottom of the cap I5.

Ports 2I are formed in the side of the barrel 5 in opposed relation to the sleeve I I and the purpose of these ports 2l is to allow the pressure of the oil to exert itself against the packing sleeve II to expand the packing sleeve against the inside of the working barrel (not shown) to the end that sand and other foreign matter will be thoroughly pulverized.

Obviously, the collar I0, the packing sleeve II and the valve element I8 are free to slide up and .down on the barrel 5.

It can be seen that on the down stroke of the valve assembly the collar I0, sleeve II and Valve element I8 will rise on the barrel 5, permitting oil to pass fromlthe duct I6 through the ports I9 to the interior of the barrel 5 and out of the barrel head 6 by way of the ports 1.

On the up-stroke, to perform the lifting action of the oil thus captured, it can be seen that due to the frictional engagement of the sleeve II against the inside of the working barrel, the barrel 5 as it is lifted will move upwardly resulting in the engagement of the seat 1 against the tapered valve element I8, thus cutting off the oil from below the barrel 5 so that further lifting of the barrel 5 and in fact the entire valve assembly will'result in lifting the column of oil above the valve assembly.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter. l

Having described the invention, what is claimed as new is:

A pump valve assembly comprising a barrel threaded at its lower end and provided with an enlarged head at its opposite end defining a stop shoulder, a rod line attaching shank on. the head, said head being hollow and in communication with the barrel and formed with outlet openings at the upper end thereof, an extensible sleeve on the barrel and longitudinally slidable thereon, a ring on the barrel at the lower end of the sleeve and being slidable on the barrel, the ring being formed with an external bevel, an internally threaded cap for disposition over the lower threaded end of the barrel and formed with an internal bevel at itsl upper edge defining a. seat against which the beveled surface of the ring is seatable, said cap being formed with vertically extending ducts in the side Wall thereof extending from the bottom of the cap and opening through the seat, said barrel being formed with ports immediately opposed to the said seat and being -olosed by the ring when the barrel is moved in an upward direction.

JOSEPH H. BUTLER. 5

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