US1340545A - Pump - Google Patents

Description

J. L. JOHNSON.

PUMP.

APPLICATION FILED MAR. 22, I920.

Patented May 18, 1920.

WNHHIWI NV N TOR. 0M., ,of

IIJIIIIIII UNITED STATES PATENT OFFICE.

JOHN L. JOHNSON, or Ia'uivmrin5 TEXAS.

PUMP. t

Specification of Letters Patent.

Application filed March 22, 1920. Serial No. 367,814.

To allwlwm it may concern.' r

Be it known that I, JcrrN L. JOHNS-0N, a citizen of the United States, residing at Humble, inthe county of Harris and State of Texas, have invented certain new and useful Improvements in Pumps, of which the ,following is a specification. Y

This invention relates to new and useful improvements in a pump.

One object of the invention is to provide a pump of the character described equipped with an attachment through which the pump may be cleansed of sand or other foreign matter which may collect therein and interfere with the operation of the pump valve.

With the above and other objects in view, the invention has particular relation to certain novel features of construction, operation and arrangement of parts, an example of which is given in this specification, and illustrated in the accompanying drawings wherein,

Figure 1 shows a vertical sectional view of a well screen showing the pump therein with the cleaning attachment applied thereto and shown in section- Fig. 2 is an enlarged fragmentary vertical sectional view of a pump showing the cleaning device attached and,

Fig. 3 shows a transverse sectional view taken on the line 3, 3 of Fig. 1.

Referring now more particularly to the drawings wherein like numerals of reference designate similar parts in each of the figures the numeral 1 refers to a well screen which is preferably formed of perforated pipe and4 which in use is let down into the oil bearing strata of an oil well. The lower end of this screen is usually closed by means of a cap 2. The numeral 3 designates the standing barrel of a pump through which the oil is pumped to the surface of the ground. Within the barrel 3 there is a reciprocating valve (not shown) and secured in the lower end of said barrel is a standing valvel. This standing Vmaterial is disposed to settle around the valve, within the valve cage, and to become packed therein so as to restrict, or entirely stop the operation of the pump. In order to kcleanse the pump of this sand, an attachment has been designed which will now be described.

A perforated pipe section 5 is attached to the lower end of the pump, by means of the usual coupling 6, and threaded on to the lower end of this pipe section is a hollow casting 7 formed with an internal chamber 8 and having the upstanding annular flange 9, within which the lower end of the perforated section 5 is screwed. Arranged concentric-ally within said pipe section 5 there is an upstanding nozzle pipe 10, whose upper end is contracted forming the nozzle 11 and whose lower end is threaded through the upper wall 12 of the casting 7. Arranged on the outside of the pipe sec tion 5 there is an inlet water line 13 whose lower end is threaded into the casting 7, and through which water may be forced from the surface of the ground, under pressure, into the chamber 8. The underside of the cast king 7 has an outlet opening as 14; which is controlled by the outlet valve 15.

Then the pump becomes sanded up it is lirst elevated some distance above the bottom cap 2 of the well screen, and water is then forced, under pressure, through the water line 13 into the chamber 8 and out through the outlet opening 14, thus carrying away all sand which may have collected in said chamber 8 and in the nozzle pipe 10. The pump is then lowered until it rests on the cap 2 at the bottom of the screen and the valve 15 is thereby held tightly closed. Tater is then again forced under pressure down through the water line 13 and will pass into the chamber 8, and up through the nozzle pipe 10 and the nozzle 11 and will be projected up through the seat of the standing valve at the bottom of the pump barrel 3, and will loosen up and wash away the sand which may have settled and become packed in said valve. he nozzle pipe 10 is provided near its lower end with a port 16 through which part of the water passes in order to loosen up and wash away the sand which may have settled around said nozzle pipe. The sand thus loosened up by the agitation of the water forced in under pressure, as explained, may be pumped out in the usual way.

What I claim is:

1. An attachment for pumps including a perforated pipe attached to the lower end of the pump barrel, an upstanding nozzle pipe therein whose upper end is formed into a nozzle, alined under the standing valve of the pump, and means through which water may be forced under pressure through said nozzle and projected againstV said pump valve.

2. An attachment for pumps including a Patented May 18, 1920.

perforated pipe section adapted to be attached to the lower end of a pump barrel, a nozzle pipe arranged concentrically within and spaced from said pipe section, and means through which Huid may be forced under pressure through said nozzle pipe and projected against the standing valve of the pump.

3. An attachment for pumps including a perforated pipe section adapted to be secured to the lower end of the pump barrel, a casting formed with an internal chamber, carried by the lower end of said pipe section, an outlet opening through which Huid may be discharged through said chamber, a

Valve controlling said opening, a nozzle pipe arranged within said pipe section and spaced from the walls thereof and communicating with said chamber, and a line entering said chamber through which fluid may be forced under pressure into said chamber and up through said nozzle pipe, whereby said fluid is projected against the standing Valve arranged in the bottom of said pump barrel.

4. The combination with a pump having a standing valve in the lower end of the barrel thereof, of a perforated pipe section attached to the lower end of said pump barrel, a nozzle pipe arranged c onccntrically within said perforated section under said valve, said nozzle pipe being provided with a lateral port, and means through which fluid may be forced under pressure into the lower end of said nozzle pipe and projected through the nozzle thereof against said Valve and through said port into the spacek between said pipe section and nozzle pipe.

In testimony7 whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN L. JOHNSON. lVtnesses J. DIXIE SMITH,

S. V. Goss.

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