US1491044A - Pump - Google Patents

Description

2 Sheets-Sheet 1 als Aprily 22, 1924.

J. H. `I EFFRIES ET AL PUMP Filed Jan. 29. 1923 April 22 1924.

PUMP

' Filed Jan. 29. 1923v 2 sheets-sheet 2 Patented Apr. 22, 1924.

UNITED STA-TES g 1,491,044 PATENT oFFlcEi JOHN H. JEFFRIES, OF -INGLEWOOD, .AND EDWARD M. DOI-IEBTY, OF LOS ANGELES, l CALIFQRNIA. f

l PUMP.

Application lil-ed January 29, 1923. Serial No. 615,631.

from axial alinement4 of the plunger-operating stem and plunger so that lateral motion of the sucker linewill not tend t'ordeflect the plunger. yThus the plunger is self-alining so that it will wear evenly from end to end and will `not Wear the working barrel unduly at any particular point.

Another object is to provide a novel construction that permits'of .relative lateral 0scillation or deflection of the vplunger and sucker line.

Another object is to provide for relative lateral oscillation of the plungers of a double actingpump.

Another object is to provide Vfor effectual u packing of the joint between the valve and the member on which itreciprocates.

, A further object iste minimize the en-` trance of sand'between the pump plunger" and working barrel. Y

Another Objectis to guard against the entrance of sand to the universal joint.

The accompanying drawings illustrate the invention:

Figure 1 is an elevation, partly in section, of a pumpconstructed in accordance with the provisions of this invention, 'said pump having a plurality ofplunge'rs.

Fig. 2 is an enlarged sectional detaili of the joint between the lower plunger stem and the sucker line that operates it.

Fig. 3 isa sectional elevation of/one of,

the-plungers and.y itsassociated parts.

Figs. 45 and 6 are plan sections on the lines indicated by.4,--4,H 5?-5v and 6-`-6, .re-`

, single valvedplunger or .with a plurality of"y y valved,plungers.according as the pump 1s j spectively, Fig..- 3.

The workingbarreh of theA pump catedatl. andmay be provided with a of thesingle. plunger type or double acting. In this particular instance, iny Fig. 1, two

Vplungers are shown and are indicated at l2.

Since the plungers are alike a description pf one will suffice forfboth. Each plunger is provided with a valve seat 13 on its inner face adapted to be engaged by a valve plug 14 on a. sleeve 15. Other valve means may be used in vplace of those shown and de,- scribed. The sleeve 15 is guided and reciprocates upon a tubular member 16 which, in this instance, is :integral with the plunger. The tubular member 16 isconnected by radiating webs 17 to the lowersection 18 of the plungensaid section 18 being provided with the valve seat 13 and being screw threaded vat 19 intothe upper' plunger section 20.

The webs 17 are slightly below the level of the sleeve 15,A when the valve 14 is closed, so as not to interfere with the operation of said valve.

The bore .of the sleeve 15y is slightly eny larged at its upper end asindicated at`21, and said enlargement terminates Vdownl wardlywat, an internal shoulder 22. T/Vhen ing duct 25 in the sleeve 15.

Engaging theupper end of the sleeve 15 is an annularcap 26 formed by a flange on 'the lower end of a tubular member 27. The

cap,I 26 is held toward the sleeve 15 by a coil spring 28that surrounds a tubular fluiddeliecting shield 29 extending rdownwardly from an upper spring seatr 30 with which the `upper end of the spring 28 engages. Thus the spring '28 aids in quickly closing thevalve atl the beginning ofthe up strokel of the plunger. The :shield 29'is interposed between the spring 28 and the tubular member27.

j The spring seat 30 is `.suitably connected with a plunger-operating stem 33'. Iny this instance the springisea-tBO vbears againstl a tubular spacing member' 43 which in Vturn vvbears against. acoupling membe'rf 3'1" that is provided `with internal screw threads 32 for connection `with a suckergline, not shown.

The stem 33, which may be tubular as shown, is threaded at its upper end into the coupling member 31 and extends through the tubular members 27, 43 and also Vinto the tubular member 16. Y

The stem 33 is connected with the tubular member 16 by a universal or flexible joint,

indicated in general by the character 34.

The universal oints` are hollow and, though different constructions may be employed for the universal joint 34, l have illustrated a preferred construction as follows: The tu- -V bular member 16 is provided with an internal annular concave seatl 35 in which is seated the male member 36 of the joint. In this instance, the member 36 constitutes a nut which is screw threaded on to the lower end of the stem 33. The members 16, 36 thus constitute a bearing which permits of universal motion between said members. The lower end of the member 36 is provided with a concave seat 37 against which lits any annular Yflange 38 of a thimble 39. Loosely surrounding the thimble 39V is a nut 40 which is screw-threaded into the enlarged lower end 41 of the tubular member 16, that constiv tutes a fluid-deliecting shield for ,the universal joint. Clamped between the nut 40 and thimble 39 is a resilient cushion 42 of rubber or the like. The nut 40 lits loosely on the thimble 39 so as to permit relative motion therebetween when the members 16, 33 are relatively oscillated sidewards.

flect. any sand, that maybe in the liquid being pumped, into the plunger and thus prevent the sand from penetrating between the plunger and working barrelA and cutting them. ln order to dispose of any grains of sand thatV may pass between the upper end of the plunger and the working barrel, an

kannular groove 45 Ais'provided adjacent the upper end of the plunger and a duct or ducts 46 Vlead* aslantV downwardly and inwardly `from the groove 45to the interior of the plunger. It is to beV noted that the. upper end of the plunger is a substantial distance above the valve so as to hold a considerable amount of sand that may settle out of the liquid abo-ve the valve during the upstroke of the plunger, thus insuring that such sand will vnot get between the plunger and work-A ing barrel. j y'The pump operates as follows:Ass'i1m ing vthat the lower plunger is beginning its down strokev and thatV the upper plun- The cush-A .ion 42, though readily yielding under such ger is beginning its up stroke, the lower valve Vwill open to allow the liquid to pass into the working barrel above the lower plunger, and the upper valve will close so as to lift the column of liquid above said upper valve. As the plungers are reciprocated, in a manner well understood in the pumping art, any lateral deflection or whipping of the sucker lines, not shown, will take place without tending to force the plungers,

against any particular zone of the working Y that there may be in said working barrel.

When the plunger rstarts on its down stroke its valve will be raised against the pressure of the spring 28 and the liquid column above said valve so that the liquid below the valve can rushintothe space in the upper portion of the plunger to fill the partial vacuum createdyby the descending plunger. As the column of liquid ascends into the plunger, the shield 41 deflects the liquid and any sand that there may be therein away lfrom the universal joint so that said sand will not penetrate between the members 16, 36 and the members 36, 39. fAs'the liquid column follows upwardly through the plunger in the space above the valve, the shield 29 will protect the upper end of the tubular member 27 against the entrance of sand between said tubular member and the stem .33, thus tending to prevent penetration of the sand to the packer 23 and to thel seat 35 through the space between the members 27 ,Y 16 and the stem 33.- If, perchanceany grains of sand should penetrate into the enlarged bore Vportion 21, in whichv the packer 23 is positioned,said grains will lodge in the groove 24 and then pass by way of the duct 25 into the plunger. f Y

InFigure 2 is disclosed a detail of the construction for. connecting the lower plunger with the sucker line, indicated.l at 47. In this instance the suc-ker line 47 is screwthreaded at 48into a plug 49 which, in turn, is screw threaded into the lower coupling 31. lt will be clearfrom this thatthe plungers are of identical construction and that the sucker Sil lli)

line 47 passes through the tubular stem 33, Y

Y line, not shown, surrounding the sucker line 47 in a well known manner. Y Y

Y The lower `section 18ct each plunger is provided at its lower end with a portion 50 which is spaced suliiciently from the work- 4ing barrel to form between the portion 50 and the kworking barrel a dead liquid space a so thatV the liquid trapped in saidspace, onV

the down stroke of thev plunger, will act as a of sand tofsuch space, Vrthus insuring V'against lcushion orbarrier to prevent 'the entrance the sand getting between the plunger and working barrel and .cutting and wearing them, as the plunger descends.

We claim:

l. In a pump, the combination of a working barrel, a tubular plunger in the working barrel, a valve seat on `the inner face of the plunger, a tubular member inside of the plunger and spaced therefrom and connected therewith by a flexible joint, and a sleeve slidabl fitting on the tubular member and provit ed on its periphery with a valve to rlose onto said seat.

2. In a pump, the combination of a working barrel, a tubular plunger in the working barrel, a valve seat on the inner face of the plunger, a tubular member inside of the plunger and spaced` therefrom and connected therewith, a sleeve` slidably fitting on the tubular member and provided on its periphery with a valve to close onto said seat, a second tubular member inside of the first tubular member, and a flexible joint connecting one end of the first and second tubular members.

3. In a pump, the combination of a working barrel, a tubular plunger in the working barrel, a valve seat on the inner face the plunger, a tubular member inside of the plunger and spaced therefrom and connected therewith, a sleeve slidably fitting on the tubular member and provided on its periphery with a valve to close onto said seat, the sleeve bore being enlarged at one end, and a packer in the enlarged bore covering the joint between the sleeve and the tubular member when the valve is closed.

fl. In a pump, the combination of a working barrel, a tubularplunger in the working barrel, a valve seat on the inner face of the plunger, a tubular member inside of the plunger and spaced therefrom and connected therewith, a sleeve slidably fitting on the tubular member and provided on its periphery with a valve to close onto said seat, the sleeve bore being enlarged at one end, a packer in the enlarged bore covering the joint between the sleeve and the tubular member when the valve is closed, a

flange resting on the sleeve, and a Coil springpressing upon the flange.

5. In a pump, the combination of a working barrel, a tubular plunger in the working barrel, a valve seat on the inner face of the plunger, a tubular member inside of the plunger and spaced therefrom and connected therewith, a sleeve slidably fitting on the tubular member and provided on' its periphery with a valve to close onto said seat, the sleeve bore being enlarged at one end, a packer in the enlarged bore covering the joint between the sleeve and the tubular member when the valve is closed, a second tubular member inside of the first tubular member, a spring seat connected with the second tubular member. a spring between the spring seat and the sleeve. and a flexible joint connecting one end of the first and second tubular members.

6. In a pump, the combination of a working barrel, a tubular plunger in the working barrel, a valve seat in th'e working barrel, a reciprocating operating member for the plunger in approximately axial alinement therewith, a flexible joint connected with the operating member and with the plunger to permit of relative angular motion between said operating member and plunger, and a valve to close onto said valve seat.

7. In a plump, the combination of a working barrel, a tubular plunger in the working barrel, a valve seat on the inner face of the plunger, a tubular member inside of the plunger and spaced therefrom and connected therewith, a sleeve slidably fitting on the tubular member and provided on its periphery with a valve to close onto said seat, the sleeve bore being enlarged at one end, a packer in the enlarged bore covering the joint between the sleeve and the tubular member when the valve is closed, a second tubular member engaging one end of the sleeve, a third tubular member outside of the first and second tubular members, a spring seat connected with the third tubular member, and a spring between the seat and sleeve, the spring sea-t having a fluid deflecting shield extending below the level of the upper end of the second tubular member.

8. In a pump, the combination of a working barrel, a tubular plunger in the working barrel, a valve seat in theplunger, an operating stem for the plunger, a tubular member connected with the plunger, a fleXlble joint connecting the operating stem with the tubular member, ka portion of said tubular member forming a fluid-deflecting shield laround the flexible joint, and a valve to close onto the valve seat.

Signed at Los Angeles, California this 19th day of January, 1928.

JOHN H. JEFFRIES. EDWARD M. DOHERTY.

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