US2435470A - Pump - Google Patents

Description

Feb. 3, 1948.

B. sAMELsoN PUMP Filed June 23, 1944 3 Sheets-Sheet 2 INVENToR.

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, Frnmvw B. sAMELso 2,435,470 I v 3 Sheets-Sheet 3 Y I UNITED .sTATi-:sr PATENT OFFICE PUMP Bernard Samelson, Salem, Ohio, assignor to The Deming Compa Salem, Ohio, a corporation oi' Ohio Application June 23, 1944, Serial No. 541,711

8 Claims. (Cl. 103-102) 2 This invention relates to a pump of the deep My invention provides efficient mechanism for well type wherein a pumping unit is located some accomplishing the above-mentioned objects, and distance below the surface of the ground and is having other advantageous features. as hereinoperated by means above such surface to raise after more fully explained in connection with the liquid and discharge the same at a region above description of a preferred embodiment illustrated the surface. The pumping unit is preferably of in the drawings.

the impeller type operated by a vertical shaft Inthe drawings, Fig. is a sectional side eledriven by a. motor coupled to the upper end of vation of the drivin-g and discharge portion of the shaft. my pump and a portion of the parts below the One of the objects of the invention is to so 10 surface or in the tank; Fig. 2 is a vertical secform the pump, and so connect its parts, that all tion of a multiple pumping unit located below moving parts may be readily withdrawn for inthe surface and connected to the delivery pipe Dipebearing for the rotating shaft, in the delivery Another object of the invention is to so relate pipe between the pumping unit of Fig. 2, and the a withdrawable part of a pump to the'xed part pump parts of Fig. 1; Fig. 4 is a fragmentary to make tight joints between the xed part of l and showing the means for venting the vapors a pump and both upper and lower surfaces of and excess liquid in the pump; Fig. 5 is a cross the movable part which vseat on the fixed part. section in offset planes extending through the Another object of the invention is to provide flexible coupling and the discharge passageway. a double rotary seal about the shaft driving the as indicated approximately by the line 5 5 on impeller rwith a draining passageway between the Fig. 1; Fig. 6 is an enlarged sectional view of portwo members` of this seal. Pumps of the present tions of the coupling, shaft bearing and double type are being well employed for pumping gasrotary seal shown in Fig. 1; Fig. 7 is a view il1usoline, for mstance, from a submerged storage trating an ordinary gasoline dispensing device tank In such case the dram from thc rotary wherein the removal of the discharge nozzle from sea-l passes back to the supply tank, so that any its supporting hook results in the energization of leakage past the first seal will be returned to the motor to actuate the pump; Fig. 8 is a diathe tank, withoutv reaching the driving mechagram illustrating the circuit to the motor controlled by the movable hook which supports the Another vobject of the invention is to provide nozzle in idle position. for the vertical adjustment of the shaft itself In Fig. 1, I0 indicates a horizontally extendand thereby adjust the presentation of the iming plate wh h forms the support for the pump This horizontal extension is shown as terminat;

while it firmly secures portion of the The base member 20 rests on a gasket 21 on the top `of the plate I0 and is secured in position by bolts 28 which pass through the plate. i0 and its gaskets and are threaded into the collar li on the underside of the plate. The heads of the cap screws I3, which secure the collar Il, are preferably round and seat in cylindrical openings 29 in the member 20. the cap screws having l angular cavities for an internal wrench to turn them.

that the construction described, the hollow base member 20 in place above the collar .I l, and clamps the supporting plate i between the base and collar, nevertheless allows the base 20 to be removed without disturbing the connection of the collar to the plate. Accordingly, the installation of the container tank andthe top of the pit tank and connections between them may readily be installed and the pump construction thereafter applied and adapted to be removed should there be occasion for it.

Secured to the flat is a closure head 3U pipe and the shaft to operate after described in detail. For the present, it may be noted that the head 30 has a horizontal top flange 3l resting on the top 2l of the base and a downwardly extending tubular body 32 into the lower end of which the pipe 40 is threaded. The axial opening in the body 32 is internally stepped to support the shaft bearing and the rotary seal, as hereinafter described.

The closure head 30 has Van open lower portion 33 registering internally with the interior of the pipe 40 and-then by lateral portion 34 communieating with the discharge passageway 25. The exterior of the upper portion of the body 32 is cylindrical and of less diameter than the cylin- It will be seen top of the base member 20 which carries the delivery 40 with its impeller pumping mechanism the impeller as hereinbeing merely necessary to put the head in `position on its two gaskets and then to turn in the clamping bolts. y

The motor support is shown at 50 in Fig. l. It has an outward bottom flange 5|. Suitable cap screws 52 extend through this flange and through the flange Il of the head and are threaded in the top 2i of the base. Accordingly, when these screws are tightened all three parts are bound tightly together. Fig. 1 shows a motor casing 55 held by screws 56 on the top of the motor support 50. Depending centrally from within the casing is a driven shaft 51 which may be the armature shaft of the motor.

The shaft 51 driven by the motor is coupled with the aligned impeller shaft 60 which extends downwardly centrally within the delivery pipe 40 and operates the pump mechanism, one form of which is shown in Fig. 2 and will be hereinafter explained. This motor shaft 51 is connected with the pump shaft 50 by a flexible coupling which is combined with means for adjusting the shaft 60 axially to make a proper presentation of the parts at the pump surfaces. This coupling and adjusting construction is shown in Fig. 1 and comprises v the following elements:

drical interior of the base wall 23, so that there is an annular passageway between the two walls entirely surrounding the body 32 and intersecting the continuous passageways 33, 34, 25 from the interior of the pipe to the final discharge from the pump.

Attention is called to the fact that the annular passageway 35 rises higher than the topmost portion of the discharge passageway 25, thus leaving a small annular'v chamber at the top of 'theannular passage in which vapors may accumulate and which may be drawn off by means hereinafter explained.

The ange3l rests on top of the base 2i with an interposed flat gasket 36 so that these parts may be tightly secured together. The flange may be secured by its own cap screws (the heads of which may occupy sockets in the surmounting part', after the manner of the pit tank screws I3 heretofore described) or I may use merely the same bolts which secure the motor support on top of the flange, as hereinafter described.

At its lower portion'the body 32 is formed with 'an outward flange 38 overhanging an inward base, and in that region l'. have provided a, compresslble gasket 39 in the form of arubber ring round in cross section. This gasket lies in a groove 'in the base'casting ledge and maintains a tight junction between the twok members while allowing a slight variation in presentation of the body 32y to the base casting. This enables the head 30 to have a. liquid-tight engagement adjacent both its top and bottom, it

'i0 lies partly in arecess in the collar 65 and a tWo shafts.

A collar 65 located within a well in the head 30 has a reduced lower portion carrying the inner raceway of a ball-bearing 66, the outer raceway of which seats snugly within the body 32 and above an inward ledge `of that body. The shaft 60 is splined in the collar 65 so that the two rotate together. lThe shaft, however, is adjustable longitudinal of the collar by means of a nut 61 threaded on the shaft and resting on the top of the collar. i Y f Above the collar is a collar 10 having an upwardly extending sleeve portion 1i embracing the drive shaft 51 and keyed or pinned to it. Between the two collars are a series of surmounting yielding discs 15, preferably of leather. These discs are connected in certain regions with the collar 85 by upwardly extending vertical pins 68 and connected with the collar 10 by downwardly extending vertical pins 18.

It will be seen that the flexible coupling described provides for the rotation of the shaft 60 by the motor shaft 51 without danger'of binding and without requiring exact alignment of the The nut 61 winch adjusts the impeller shaft partly in central openings 11 in the flexible discs 15. This nut has an angular exterior suitable for the application of a wrench and is normally held from rotatingby occupying an angular opening of corresponding size in a metal plate 19 (best shown in Fig. 6) which lies between the lowermost yield ing disc 15 and the collar 65 and is held in place by the pins 68.-

It results from the construction described that when the parts are assembled, as shown'in Figs. 1 and 6,.the adjusting nut 61 cannot rotatel and the impeller shaft 60 is held in definite position longitudinally and is readily rotatablev by the motor. The shaft may be adjusted whenever desired by lremoving the cap screws 52 and then removing the motor with the motor support and with the collar- 10 on the motor shaft,the pins 1B withdrawing from the flexible coupling discs. Then such coupling discs maybe removed from the pin 13 and the locking plate 19 removed while the collar 85 retains its position in the clamped head 30. Now a wrench to be applied to the nui l1 may adjust the shaft 80 up or down, as desited.

'I'he removal of the motor parts also, of course, may be availed of to repair the coupling itself if it should be necessary. The consolidation of the coupling and the adjustment feature into a combined unit as shown in the drawing, consolldates the parts and reduces the space required.

I provide a double rotary seal about the lshaft l between the passageway 33 and the shaft lbearing 66, thus preventing the pumped liquid from passing up into the coupling. As shown in Figs. 1 and 6, this seal is housed within two cooperating collars 80 and 0| which have external flanges overhanging an inwardly extending ledge 82 on the body 32, to which the seal is secured by screws 83. The collars have central cavities in which are mounted suitable packings. These comprise a lower annular packing 04 within respectively downwardly and upwardly against the end portions of their cups which ln turn bear against the inner faces of the collars.

The construction just described makes an effective double rotary seal with an annular space between the two members of the seal. A suitable drain passageway communicates with this annular space, so that if any liquid does get past the lower seal it will be drained away and have no pressure tending to force it beyond the upper seal.

When the pump is installed for pumping liquid from a tank, the drainage passageway preferably returns to the tank so that no liquid is lost. This is the arrangement shown in Fig. l where a downward passage 90 through the collar 8| leads to an outward passage 92 and thence to a downward passage 93 which communicates with the annular space outside of the delivery pipe 40 and within the pipe l 5.

To by-pass the vapors or excess liquid from the top of the annular chamber 36 about the pump head, I provide the construction shown in Fig. 4 which is hidden from view in Fig. 1. This comprises a tubular conduit |00 extending downwardly from near the upper end of the annular passage 36 to the casing 0| of a check valve. This casing is a tubular member screw-threaded into the bottom portion 32a of the body 32. The check valve is shown as a ball |02 normally maintained on its seat by a compression spring |03. The valve casing is connected by a coupling |04. a pipe |05, which leads downwardly in the annular space between the pipes 40 and |5 to the tank.

My pump is especially well adapted for forcing gasoline from an underground supply to a delivery stand having a discharge hose for supplying an automobile. Such stand of a frequent type is illustrated as A in Fig. 7, its hose B having a nozzle C normally shut by a valve controlled by hand lever D. When the hose is idle the nozzle is usually hung on a hook E which controls an electric switch to the pump motor, the switch being automatically closed when the hook is elevated as shown in Fig. 7, but open when the hook is lowered. This is illustrated in Fig. 8, where M indicates the pump motor and E the switch hook Iand F the electric terminals. which are in contactwhen the hook is elevated by a SDI'I'MI G tn nohskhn. -l--" Normally, the nozzle C is hung on a hook E and maintains the terminals F out When such pressure starts it is above the normal discharging pressure and, hence, supplies an increased pressure in the venting pipe |00 which opens that the vapors and gasoline from the pump may pass back into the tank.

It will be seen, therefore, that there is no venting or loss of eillclency while the pump is running and delivering liquid, but as soon as the abnormal situation develops of the pump running without being able to deliver liquid, the

cumulation of vapors.

I have referred to the impeller shaft as operating any suitable pumping mechanism carried by the pipe 40 within the supply tank or at least on the shaft and the cooperating surfaces carried by the delivery pipe. Accordingly, I have shown in Fig. 2 a multiple impeller pump with the impellers mounted directly on the shaft 80 and coacting with surfaces carried on the lower end' of the delivery pipe 40, andthe construction there shown will now be described.

device carried by the delivery of multi-stage turbine type and comprising aseries of impellers operated by the shaft 60 and each discharging into the impeller unit above it, the topmost unit discharging into a, connecting sleeve attached to delivery pipe 40.

side in the annular region about the shaft and discharges upwardly and outwardly, The disthe impeller ofeach unit is conducted upwardly by conduits |2| leading to the space beneath the surmounting impeller. Sultable packing |22 about the gaan www. -.-L

7 hamber within the sleeve III and thence up hrough the delivery pipe 4l. The hollow intake tting S at the lower end f the bottom-most impeller unit R is shown as a ubular fitting |25 which screws into the frame if the bottom unit R and carries a protecting vali |28 at its lower end. Suitable intake openngs |21 are made through the wall of this unit and are shown as surrounded by a foraminous screen |28. A clean-out plug |29 is provided at the bottom of the fitting.

It will be seen that when the motor is operated and the shaft 60 thereby rotated, the impellers left liquid entering through the-screen |25 upwardly through the pipe 4t into the passageway 33 in the head 30, thence downwardly through the passageways 34 and 2l to the discharge pipe.

The member Il!) which connectsthe upper- :most pump unit to the lower end of the delivery pipe 40 is formed-with a suitable internal sleeve lll carried by radial wings Il! and having a liner H3 forming a bearing for the shaft close to the uppermost pumping unit. Additional bearings may be provided in .the pipe Il, Thus, as shown in Fig. 3, the pipe l may be made in sections coupled together by a coupling providing an additional bearing. As shown, this additional bearing H5 has an outward flange IIB extending between the meeting ends of the two pipe sections 40. The exterior of the flange H6 may be threaded, and thus after a coupling sleeve 4I is put on one pipe section the bearing may be screwed into the sleeve tightly against such section and thereafter the other section screwed into the sleeve tightly against the bearing flange.

For the pump to operate most efficiently, the rotating impeller surfaces, of course, should be quite close to the stationary surfaces, The shaft adjustment provided normally by my pump enables this to be readily accomplished. and the original setting to be adjusted from time, to time as wear may require. With the impeller unit and the pump base and head assembled, the impellers may first stand in actual contact with their mating surfaces and the nut 61 turned down into engagement with the collar OI. Then a slight additional turn of the nut will raise the impellers out of contact with the stationary surfaces just the desired amount. By having a comparatively fine thread on the shaft 60, a very accurate adjustment may be made, and the nut, if hexagon, given one or more turns of a sixth of a rotation and relocked by the locking plate in its new position.

A finer adjustment may be made by adjusting the locking plate with reference to the collar 19. I have shown three equidistant pins 68 projecting upwardly from that collar, and with that arrangement the disc 19 must have at least three holes, one for each pin. By multiplying the number of holes the plate may be given intermediate positions enabling a setting of the hexagon nut by a step 4equal tomafraction of a sixth of a. turn, or providing an'umbeij` of holes which is not related to the" number of sides of the nut (making the nut with five sides, l,for instance)` I may provide a dierential settingl resulting in a still finer adjustment.

As already explained, the removal of the motor and coupling will allow repair of the coupling if the rotary seal needs attention, then a removal of the nut 61 andthe collar il and the 66 provides access from above to the seal and the entire seal may screwsl 83. Then the seal members may besepabearing' be removed by turning outrtheV rated, new packing 8 supplied, and the seals restored.

It will be seen pump have been so tion at any point where for it without disturbing the rest ofthe installation. vThe entire pump includingthe delivery connections may be removed without disturbing the attachments to the container tank and the pit tank. All of the operating parts of the pump may be withdrawn from the base without disturbing its connection to the top of the pit tank or to the discharge pipe, and the motor and coupling may be withdrawn without disturbing the connection between the pump head and the base.

Iclaim:

1. The combination with a horizontal plate having an opening through it, a collar on the underside of the plate surrounding the opening, bolts extending through the plate from above and engaging the collar to hold it to the underside of the plate, a pump above the plate having a base resting on the plate with a, recess to receive the heads of the bolts, and other bolts passing through the plate and connecting the base above the plate to collar below it, and pumping mechanism carried by the base including a delivery pipe extending downwardly through the opening in the plate to the region below it.

2. In a pump, the combination of a base, a. pumping mechanism` carried by the base comprising a driving mechanism and a vertical shaft driven thereby and extending downwardly to a region below the base, a delivery pipe extending downwardly through the base, a lateral passageway from the top of the delivery pipe to a discharge chamber in the base, a double seal embracing the shaft between the driving mechanism and the lateral passageway, said seal com` prising two vertically spaced packings each in a cup embracing the shaft and means for pressing each packing against the bottom of its cup and means providing a draining passageway from the space between the packings.

3; In a pump, the combination of a base, a head mounted thereon, a pumping mechanism carried by the head comprising a driving mechanismv andl a vertical shaft driven thereby and extending downwardly through the base to a region below it, a delivery pipe carried by the head and extending downwardly through the base, there being a lateral passageway from the top of the delivery pipe to a discharge chamber in the base, va rotary seal embracing the shaft between the driving mechanism and the lateral passageway, said rotary seal comprising a casing secured to the head and surrounding the shaft, a pair of rotatable annular members within the casing surrounding the shaft and bearing against the top and bottom of the casing respectively, packings surrounding the shaft and resting against the rotatable annular members, and means for pressing said 'packings against the members whereby the packings and .members may rotate with the shaft.

4. In a pump, the combination of a base, a

that the various parts of my designed as to allow separa- 4there may be occasion Ahead carried thereby and having a ytubular poring the top thereof and embracing the shaft and having a smooth annular undersuriace about the shaft, a pair of cups within the annular space in the casing about the shaft, one cup bearing on said smooth surface of said body and the other cup bearing on said smooth surface of the cover, packings within said cups snugly embracing the shaft, and a helical compression spring surrounding the shaft and bearing against the two packings.

5. In a pump, the combination oi.' a base, a head carried thereby and having a tubular portion depending within the base, a driving mechanism mounted above the head, a vertical pump shaft having a bearing in the head and depending therefrom below the base, a driving mechgion over the supporting ledge, thence downwardly within the ledge and discharging into the space outside oi'I the delivery pipe.

6. The combination, with a tank adapted to contain liquid, of a pump for raising liquid therefrom including a casing connected with the tank and a delivery pipe within the casing and pump frame providing a coacting surface adiacent the impeller, a yielding coupling between BERNARD SAMELSON.

REFERENCES CITED UNITED STATES PA'I'ENTS Number Name Date 1,008,398 Wilcox NOLV. 14, 1911 1,197,637 Johnson Sept. 12, 1916 1,245,466 Kimball Nov. 6, 1917 1,444,944 Benson Feb. 13, 1923 1,472,560 Grifllths et a1. Oct. 30. 1923 1,522,980 Roco et al. Jan. 13, 1925 1,772,862 Gerhard Aug. 12, 1930 1,815,894 Baker July 28, 1931 1,844,830 Winthroath Feb. 9, 1932 1,962,229 Adams June 12, 1934 2,149,602 -Horvath Mar. 7, 1939 2,182,072 `Crarnecki Dec. 5, 1939, 2,204,857 Hollander June 18, 1940 2,243,208 Hawley, Jr. May 27, 1941 2,255,001 Johnsen Sept. 2, 1941 2,343,752 Curtis Mar. 7, 1944 FOREIGN PATENTS Number Country Date 417,369 Great Britain Oct. 3, 1934

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