US1367451A - Bucket for deep-well pumps - Google Patents

Description

A. A. BARTON.

BUCKET FOR DEEP WELL PUMPS. 'APPLICATION FILED sEPT.23.19I8.

Patented Feb. 1, 1921.

ABCHILIIES- A. BARTON, OF GLENDALE, CALIFORNIA.

Bucxnfr non DEEP-WELL Puurs.

Specication o! Letters Patent.

Application led September 23, 1918. Serial No. 255,385.

fluids from considerable depths, these pumps being known in the art as deep well pumps.

In such pumps it is standard practice. at the present time to provide a bucket having inner and outer seats on which a clapper is seated this cla per sliding freely on a valve stem or rod. ne variation of such a bucket is shown in the patent to S. M. Fulton, 1,164,178, patented December 14, 1915. In such a bucket the inner seat is necessary as the clapper must be loose enough to slide freely on the valve stem and if made a loose lit water will pass downwardly between the clapper and the stem unless this is prevented by an inner seat. This pas sage of water occurs whenever the inner seat starts to leak with the result that the stem and clapper are rapidly eroded. The standard forms of bucket and valve as used in deep well pumps therefore give considerable trouble and very rapidly become inefficient.

The principal object of my invention is to provide an improved form of valve clapper for use in such a pump.

Further objects and advantages will be made evident hereinafter.

Referring to the drawings, which are for illustrative purposes only,

Figure 1 is a side elevation, partly in section, through a device showing one embodiment of my invention.

Fig. 2 is an enlarged view of the preferred form of valve.

Fig. Sis a cross-section on line 3-3 of Fig. l, being viewed in the direction of the arrow.

Fig. 4 is a cross-section on line 4 4 of Fig. 1, viewed in the direction-of the arrow.

In the form of my invention illustrated in these drawings, a pump barrel 11 is shown inwhich is placed an u per bucket 12 and a lower bucket 13. ach of the buckets consists ofa s ider 14 having a central hub 15. Forme on the exterior of each of the spiders 14 is a cylindrical machined surface 16 on which cylindrical spacing rings- 17 slide. Cupleathers 18 are placed between the spacing rings 17 the lower cupleather pressing against a flange 19 formed on the spider 14 and the' u per spaclng ring being forced downwardly y a nut 2O threaded on the spider 14.

Secured in 4the upper portion of the bucket 12 is a seat 21 which is preferably formed of bronze or the like, this seat being secured in place by a threaded set screw 22. Turned to make a liquid tight contact with the seat 21 is a valve or clapper 25, this clapper having a central cavity 26 in which a series of cupleathers 27 is laced. The cupleathers 27 are held apart y spacing rings 28 and are locked in place'by a gland nut 29, the lower cupleather 27 pressing against a shoulder 30 formed on the clapper 25. A conical, helical spring 31 pressesagainst the top of the clapper 25, and in the case of the lower valve presses against a collar 32 in which is secured a solid -socket stem 33. This stem has a turned shoulder 34 on which the hub 15 of the lower bucket is pressed, this shoulder terminating in a head 35 at the lower end and in a threaded extension 36 at the upper end on which a retaining nut 37 is threaded.

Secured in the upper end of the collar 32 is a pump rod 38, this pump rod passing `throu h a hollow bucket stem 39 which is provi ed with a turned shoulder 40 on which the hub 15 of the upper bucket is pressed. The turned shoulder 40 terminates in a head 41 at one end and in a threaded extension 42 at the other on which a nut 43 is threaded. The spring 31 of the upper bucket presses against a collar 44 threaded on the outer end of the hollow bucket stem 39, 'this collar also having an outer pump rod 45 secured in the upper end thereof.

The method of operation of the invention is more or less obvious. The rods 38 and 45 are reciprocated alternately by means of a suitable pump head, water being supplied to the bottom of the pumpbarrel 11 and moved upwardly by each valve in turn. On the downward stroke of either bucket the clapper 25 of that bucket is lifted against the tension of the spring 31 and water flows between the clapper and the seat 21. 0n the Patented Feb. 1, 1921.

upstroke the clap er 25 seats solidly and lifts the Water. he `frm of construction shown is similar to the standard type of bucket now employed, but has certain novel features which will now be pointed out.

In the first place, the clapper 25 makes a water tight closure at only one point, namel against the seat 21. This is made posslb e by the use of the cupleathers 27 which make a tight closure between the clappers 25 and the sleeve 39 on one hand and the rod 33 on the other. These cupleathers are so placed, as will be' seen from the drawing, that they are forced tight by water pressure from above andare relieved by water pressure from below. As a result of the bucket arrangement of the cupleathers, the clapper, when the bucket is lifting, forms a very tight closure and whenever the bucket 1s dropping the clapper readily lifts due to the release of the pressure on the cupleathers 27.

It will be noted that the cup leathers 27 form a water tight but fiexible joint between the' clapper 25 and the rod 33. Certain new and useful results are produced by this construction which may be enumerated as follows:

a.V Only one seat for the clapper is necessary, the inner seat commonly found on deep well pumps being omitted. This inner seat, which in standard pumps 1s necessarily of 4 small area as compared to the outer'seat, is

always the first to leak and by its omission one fruitful source of trouble is eliminated. As the travel of the clapper on the rod 33 is small the cup leathers 27 wear very little and need not be renewed for long periods.

b. In the event that the outer yseat is not truly concentric, or not located in a plane truly perpendicular, to the rod 33 the closure of the clapper on the valve seat is nevertheless perfect as the cup leathers will yield sufiiclently to allow the cla per to seat.

c. Thel absolutely tight c osure of the cup leathers along the rod and prevents this rod from being cut away by such leakage.

d. As the cup leathers 27 fit tightly around the rod 33 they positively guide the clappercausing it to seat evenly all around without gaging'the seat. Where a loose two seated clapper is used the edge thereof catches in the seat and tends to metaL e. The'soft cup leathers fitting tightly around the rod tend to prevent sand or gravel from getting into the -space between the cup leathers and the rod and thus prevent the clapper from being jammed open as often occurs with a two seated clapper fitting loosely around itsrod.

A further novel feature of my invention is y27 on the rod 33 prevents leakage the use of the conical helical spring 33 afranged as shown. l

A still further novel arrangement is the insert seat 2l, the peculiar method of se curing the buckets on the rod 34.-V and the sleeve 39, and the method cu leathers 18 on the exterior of the barrel.

l, hile I have particularly described my invention as used in deep well pumps it is understood that I do not limit my invention to the form shown but the same may be used in various forms of pumps in which a valve or clapper is used on buckets.

What I claim' is j l. A bucket structure for use in deep well pumps comprising a cylindrical bucket; a seat formed on the top of said bucket about an opening extending therethrough; a bucket stem extending through said opening, the entire weight of said bucket being carried by said stem; a clapper sliding on said stem, said clapper seating in fluid tight relationship on said seat; and flexible means for making a fluid tight joint between said clapper and said stem.

2. A bucket structure for use in deep well pumps comprising a cylindrical bucket; a seat formed in said bucket about an opening extending therethrou h; a bucket stem extending through said opening, the entire weight of said bucket belng carried by said stem,y a clapper sliding on said stem, said clapper seating in fluid tight relationship on said seat; and flexible packing in said clapper about said stem.

3. A bucket structure for use in deep well pumps comprising a cylindrical bucket; a seat formed on the top of said bucket about an opening extending therethrough a bucket stem extending through said opening, thc

l entire weight of said bucket being carried by said stem; a clapper sliding on said stem, said clapper seating in fluid tight relationshi on said seat; spring means for forcing sai clapper against said seat; and flexible means for making a fluid tight joint between said clapper and said stem.

4. A bucket structure for use in deep well pumps comprising a cylindrical bucket; a seat formed in said bucket about an opening extending therethrou h; a bucket stem extending through sai opening, the entire weight of said bucket being carried by said stem; a clapper sliding on said stem, said clapper seating in fluid tight relationship on said seat; spring means for forcing said clapper against said seat; and flexible packing in said clapper about said stem.

In testimony whereof, I have hereunto set ARoHILLs A. BARTON.

of securing the

Images