US2631545A - High-pressure pump - Google Patents

Description

March 17, 1953 v. JONES HIGH-PRESSURE PUMP 4 Sheets-Sheet 1 Filed Feb. 16, 1948 Lezsnse l4 \AM/ES INVENTOR. BY MKS 0 March 17, 1953 v. JONES 2,631,545

., HIGH-PRESSURE PUMP Filed Feb. 1a. 1948 4 She'ts-Sheet 3 57 l LESTEE 1 Jen =5 INVENTOR.

A T TOENE/ March 17,- 1953 v. JONES 2,631,545

, HIGH-PRESSURE PUMP Filed Feb. 16, 1948 4 Sheets-Sheet 4 45575? K n M/o IN V EN TOR.

- A r-roZNE/ Patented Mar. 17,, 1953 UNHTED STATES T OFFICE HIGELPRESSURE EUM]? Application February 16, 1948, Serial No. 8,619

This invention relates to pumping apparatus for moving fluids, such as oil, water and the like, and it has particular reference to a low-speed, high-pressure pump capable of economically producing a continuous flow of fluids, and its principal object resides in the provision of a simple andv inexpensive structure which can be adapted to almost any type of pumping operation accord ing" to its dimensions and adaptations.

An object of the invention is that of providing a pump of the rotary type having a plurality of" paired wings or vanes operating in a cylindrical chamber in alternate movements whereby liquids can be moved rapidly andunder relatively high pressures while the pump is operated at relatively low speeds. I

Broadly, the invention contemplates the provision of a pump mechanism embodying a novel arrangement of a pair of opposed rotors, each having a pair of opposingly arranged vanes integrally formed thereon capable of functioning intermittently to move liquids through the apparatus.

While the foregoing objects are paramount,

other and lesser objects will become manifest as the description proceeds, taken in connection with the appended drawings wherein: Figure 1 is a vertical cross-sectional view of the invention, taken on lines !i of Figure 2, showing the association of the rotor members and illustrating the intake passages in dotted lines centrally of the device.

Figure 2 is a transverse sectional view of the invention, taken on line 22 of Figure 1, showing the arangement of gears in plan.

Figure 3 is a plan view of the invention.

Figure 4 is another vertical cross-sectional illustration, taken transversely of the section shown in Figure 1 on line i-4 of Figure 2, and showing the outlet pasages in dotted lines centrally of the invention.

Figure 5 illustrates the invention in partial section, on lines 55 of Figure 8, showing the rotors and motor in elevation and illustrating one pair of the tensioned stop members.

Figure 6 is a fragmentary partial cross-sectional view of the invention, taken on lines 8-6 of Figure 8, showing one of the opposite pairs of stops, the same being compressed.

Figure 7 is a plan view of the internal parts of the invention, the top being removed to illustrate the relative positions'of the cams and stops, as Well as the gears operating the rotors.

Figure 8 is a transverse cross-sectional View, taken on lines 8'-8 of Figure 5, showing the ar- 1 Claim. (Cl. 103-129) rangeinent of bearings between the rotors and illustrating the relative positions of the vanes, one pairof which is shown in dotted lines.

Figure 9 is a lateral sectional view through one of the rotors showing one of critical positions of the paired vanes with "espect to the inlet and discharge passages.

Figure 16 illustrates, in another lateral sectional view through one of the rotors, the oppositecritical positionsof the paired vanes with respect to the inlet and discharge passages.

Figure 11 is a perspective illustration of the upper rotor member showing the opposingly arranged recesses in the peripheral gears.

Figure 12' is a perspective view of the lower rotor member showing the bearing race, cams and stop lugs common to both rotors.

Figure 13 is a perspective illustration of the internal sealing band for closing the space between the joined rotors. I

Figure 14 is a perspective view of the external sealing band arranged opposite to the internal band.

Figure 15 is a transverse sectional view of one of the vanes showing the arrangement of the sealing bars fitted in grooves formed longitudinally of each edge, and

Figure 16 is a perspective view of one of the sealing members fitted in the vanes.

Accordingly, the invention comprises a casing Hi, preferably cylindrical in form, and having legs l l by which the assembly can be anchored in operative position. 'A circular cover plate i2 is provided for the casing it and is secured thereto by screws l3 arranged about its periphery, as shown in Figures 1, 2 and 4. A gasket is provides a suitable seal between the casing It and the cover i2 rendering the casing fluid-tight.

A vertical shaft 55 is rigidly arranged concentrically of the casing is, its lower end being seated in a bossiS formed in the bottom I! of the casing iii while the upper end is slightly tapered and extends into another boss is formed ranged in the casing it and rotatably supported on the shaft 55. The members 2! and 22 are identically formed, as shown in perspective in Figures 11 and 12, each being cylindrical and having one of their ends 23 and 24 closed. Integral with each of the closures 23 and 24 is a pair of opposingly arranged wings or vanes 25 and 26 which are substantially wedge-shaped in transverse section, as shown in Figures 8 to 12 and 15.

Each pair of the vanes 25 and 26 is arranged parallel to the axis of the rotors 2i and 22 and is spaced to engage the shaft 15 on each side, in the manner shown in Figures 8, 9 and 10. parent in Figures 11 and 12 the paired vanes 25 and 26 are arranged opposite, the vanes 25 on the upper rotor 2! extending into the opposite rotor 22 while the lower set of vanes 26 on the latter extend into the rotor 21.

Formed about the peripheries of the closures 23 and 2d of the rotors 2! and 22 are sets of gear teeth 2'! and 23 respectively. The teeth 21 on the rotor 2| are divided into paired segments by notches 2% and 38 while the teeth 28 are separated into segments by notches 3i and 32. These arrangements are shown in Figures 7, 11 and 12 and their functions will be described presently.

The rotors 2! and 22 are formed with swaged portions 33 and 34 which space the teeth 21 and 28 on the rotors from their opposite ends which are approximately the same in diameter as the arrangements of teeth 21' and 28. The open ends of the rotors 2i and 22 are formed with circular grooves 35 and 36 providing, when the members 2| and 22 are joined as in Figures 1, 4 and 5, a race for a plurality of roller bearings 3'! affording a non-friction association between these members. It is entirely practical to form the rotors 2i and 22 without swaging the sides, thus the sides can be straight.

About the rims of the open ends of the rotors 2i and 22 are formed recesses 38 and 39 which provide shallow grooves when the rotors are joined to accommodate a band 50, shown in detail in Figure 14., to aid in sealing the chamber ii defined by the joined rotors 2land 22, as shown in Figures 1, 4, and 6. Similar recesses i2 and 43 are formed internally of the open ends of the members 2! and 22 which, when joined, define a shallow groove 42 inside of the connected rotors to receive an expansion band 45, shown in Figure 13, sealing the joint within the chamoer 4| opposite the band 22. Thus the chamber il is fluid-tight although capable of being independently rotated with respect to each other, the bands 42 and being arranged to permit the free rotation of the rotors 2i and 22.

When the rotors 2i and 22 are operatively associated in the manner just described, and illustrated in Figures 1, 4, 5. and 6, the vanes 25 and 26 bisect the chamber All, as in Figures 9 and 10, and operate intermittently as each rotor is turned a partial revolution, as will presently become apparent, to positions depicted in Figure 8 in solid and dotted lines.

In their assembled operative positions, as shown in Figures 1, l, 5 and 7, the teeth 21 and 23 are arranged on the upper and lower ends of the assembly. The upper teeth 2'5 on the rotor 21 are engaged by oppositely arranged paired p-inions (is and i? on shafts it and ts on whose upper ends are gears 52 and 5! meshed on opposite sides of a gear 2 on the lower end or" the shaft 52 of a motor supported by brackets 55 on top of the casing 12, as in Figures 1 and 5.

The lower arrangement of teeth 28, on the rotor 22 are meshed with oppositely arranged pin-.

As ap- ' ions 56 and 51 on shafts 58 and 59 on whose upper ends are gears 66 and 6| meshing on opposite sides of the gear 52 in transverse arrangement of the gears 59 and 5!. The gear arrangement is illustrated in Figure 2 which shows the association of all of the gears 52, Si, 52, $0 and ti and the directions of their rotation are indicated by arrows.

Each of the shafts 48, (i9, 58 and '59 are journalled at their upper ends in bearings 62 in the cover plate [2 and suitable packing rings 63 are provided to prevent fluid passage thereby. The lower ends of the shafts 48, 39, 58 and 59 are supported in bosses 64 formed integral with the bottom it of the casing it, as shown in Figures 1 and 4, in which non-friction bearings may be provided if desired. The assembled rotors 2| and 22 are journalled upon the shaft 15 and rotate about this member, upper and lower hardened sleeves 52 providing suitable bearings therefor.

The surface engaging edges as well as the outer ends of the vanes and 26 have grooves formed therealong to receive sealing bars 66 which may be in a single U-shaped unit, as illustrated in Figure 16, or may be, if considered more desirable, provided in sections of suitable length to be arranged in the grooves 55. A more suitable arrangement may be that of providing a plurality of bars of different lengths for each section.

The bars 25 are preferably hardened and are therefore wear-resistant as well as being capable of providing a more desirable seal between the engaging surfaces than would be afforded by the vanes themselves. It will be noted that the bars 35 are arranged to engage the inner surface of the chamber 4! the inner surfaces of the opposing closed ends 23 and 2 3 of the rotors 2i and 22, and the surface of the shaft i5, as shown in Figures 8, 9, 10 and 15.

Each of the rotors 2i and ,22 have integral projections 8'? and 68 extending from opposite sides thereof near the. shoulder a defined .by the swagedportions 33 and 3%": thereof adjacent to the arrangements of teeth 21 and 28 formed thereon, as exemplified in Figures 5, 6, 9, 10,11 and 12. Cams 5s and iii are formed integrally of each side of each member Z! or 22 in transverse arrangement with respect to the, lugs or projections 3i 58. The earns 52 and iii are formed near the rims or open ends of the rotors 2i and 22, as

illustrated in Figures 5, 9 and 10, andspaced in-' wardly from th lugs 5i and G8.

Equidistantly spaced about the interior wall of the casing iii are a plurality of integral bosses H which are formed with vertically arranged rectangular receptacles l2, each adapted to operatively receive a tensioned stop 13 which has horizontally projecting portions is and formed on each end, as illustrated in Figures 5 and 6. Each memberlt has a pair of vertically spaced springs it therebehind tending to urge the same outwardly so that the upper projecting portion id is engaged by one of the lugs or projections 81 or as illus ated in Figurefi, while the opposite member 15 is engaged by the oppositely arranged lugs on the opposite rotor, the cams 59 and being engageable with the body portions of the stops 13 between the projecting portions "it and i5 urging the same outwardly againstthe springs 15 to release the lug 67 or 68 permitting the rotor 24.01 22 to continuejrotation.

in operation, the combined rotors 2lQand 22,

operatively associated in the manner illustrated in Figures 1, 4 and 5, the intermittently and alternately rotated by the gear assembly previously described and shown in detail in Figures 2, 7 and 8. The members 2| and 22 are arranged, with respect to each other, so that the notches or recesses 3| dividing the arrangements of teeth 27 on the rotor 2! are aligned transversely with respect to the notches 42 and 43 in the teeth 28 of the member 22, as would be the case if the rotors 2| and 22 were assembled in the positions shown in Figures 11 and 12. It will be observed, by reference to these illustrations, that the notches 3|32 and 42-43 are spaced approximately intermediate the lugs 6'! or 68 and the cams 69 01-19.

An example of the operation of the rotors 2| and 22, in their intermittent or alternate rotation, to function to pump liquids follows:

The uppermost rotor 2| i rotated by the gears '50 and 5| and the pinions 46 and 41, as by the arrangement shown in Figure 1, until the pinions 46 and 41 register with the notches or recesses 29 and 30 in the teeth 21 thereon, at which point in the rotation of the rotor the lugs 67 are engaged by the tensioned stops 13 opposite thereto by which the rotor 2| is arrested in its movement while the lower pinions engage the lower set of teeth 28 on the rotor 22 to rotate the latter one-half turn. The cams 70 on the member 22, meanwhile, engage the body of the stops 13 between the legs 14 or 15 to move the same outwardly to disengage the upper legs of the stops '13 from the lugs 61 on the upper rotor 2| so that it, in its turn, may be rotated as just described.

The vanes 25 in the upper rotor 2| move in the direction indicated by arrows in Figure 9 until these members contact the opposite vanes in the lower rotor 22 and maintains its said contacts for an instant until the opposite vanes 26 in the lower rotor 22 are moved past the ports or passages |9 in the shaft l5, or to the positions illustrated in Figure 10.

It must be borne in mind that the ports or passages through the shaft I5 comprise two inlet ports l9 and I9 and two discharge ports 20 and '20 for the intake and discharge of fluid into and from the chamber 4| within the rotors 2| and 22 and function, as apparent in Figures 9 and 10, to alternately admit and discharge fluids according to the alternate operation of the sets of vanes 25 and 26 in the rotor assembly.

In Figure 9 the vanes 21 are so arranged that the intake of fluids through ports l9 and I9 is about to occur as soon as the ports are cleared while discharge will occur through the ports '20 and 20. The intake ports or passages l9 and I9 communicate with any suitable conduit connected to the coupling 17 attached to a boss 18 beneath the bottom I! of the casing III, as shown in Figure 1, while the discharge ports 20 and 20 communicate with the interior of the casing |0 through the boss IS in the bottom of the casin I0, the fluids being discharged therefrom through an outlet conduit 19 threaded into the bottom I! of the casing I0.

A cover is provided for the gear assembly and is applied over the cover plate I 2 and secured by screws 8|, or the like, in the manner shown in Figure 5.

Manifestly, the structure herein shown and described is capable of certain changes and modifications by persons skilled in the art without departing from the spirit and intent of the invention or the scope of the appended claim.

What is claimed is:

In a pump mechanism for fluids having an outer casing and a stationary shaft arranged vertically therein and fluid inlet and outlet passages formed longitudinally of said shaft, in combination, a pair of cylindrically formed rotor members each having one of their ends closed, the said members being axially joined at their open ends and capable of independent rotation with respect to each other on the said shaft, a pair of axially arranged vanes formed in each of said rotors and extending beyond the open ends of said rotors so that said vanes on one of said rotors extend into the opposite of said rotors in interposed relationship with the opposite set of said vanes, gear segments formed about the closed ends of each of said rotors, the segments of one of said rotors being arranged axially opposite to the segments of the opposite rotor, cam and lug means for effecting the independent alternate intermittent ar-res't of said rotors, and a plurality of driven pinions operatively meshing with the gear segments of each of said rotors whereby the said rotors are alternately and intermittently rotated.

LESTER V. JONES.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 154,003 Beal Aug. 11, 1874 488,277 Hamilton Dec. 20, 1892 778,082 Spangler Dec. 20, 1904 787,370 Fuller Apr. 18, 1905 828,417 Mollier et al. Aug. 14, 1906 886,279 Vervoort Apr. 28, 1908 915,296 Holloway Mar. 16, 1909 1,013,139 Dittlinger Jan. 2, 1912 1,354,402 Johnson Sept. 28, 1920 1,991,308 Zens Feb. 12, 1935 2,198,817 Heins Apr. 30, 1940 2,270,493 Bancroft Jan. 20, 1942 2,346,014 Downey Apr. 4, 1944 2,453,271 Sales Nov. 9, 1948 FOREIGN PATENTS Number Country Date 28,750 Great Britain 1913 358,081 Great Britain Oct. 28, 1931 362,085 Great Britain Dec. 3, 1931 444,706 Great Britain 'Mar. 25, 1936 319,415 Italy July '10, 1934

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