US2289706A - Pump - Google Patents

Description

D. C. HAY ET A1.

PUMP

Filed Aug. 14, 1959 July n14, 1942.

Patented .ulvy 14, 1,942

AUNITED STATES PATENT ortica 2,289,706 'PUMPl David C. Hay and Roy W. Hays, South Bend, Ind.

Application August 14, 1939, Serial No. 289,974

9 Claims. (Cl. 10B-'72) This invention relates to improvements in pumps, and has for its prim'ary object to provide a pump which is simple in construction, inexpensive to manufacture `and operate, highly eflicient, and which includes only a small number of moving parts.

A further object is to provide a pump which is self draining and hence non-freezing. j

A further object is to provide a novel selfpriming pump.

A further object is to provide a pump which will supply air to a -pneumatic storage tank ahead of a column of water on starting, to at least assist in maintaining air supply in the tank.

A further object is to provide a pump utilizing a member moving freely at high speed through a tube for forcing a constant stream of liquid through the tube.

A further object is to provide a pump having sheaves positioned at upper and lower ends of a well and around which a flexible endless member is trained for movement at high speed, with the upwardly extending run of said member passing freely through a conduit to imipel liquid upwardly through said conduit.

A further object is to provide a pump having an iinpeller with means for feeding liquid t said impeller comprising a feed conduit having its discharge end juxtaposed to said impeller and a member continuously shifting unidirectionally in said conduit.

A further object is to provide a pump having an intake conduit, an impeller chamber, an outlet, an impeller in said chamber, and an endless member extending freely through said intake conduit.

A further object is to provide a pump having a chambered casing provided with intake and outlet openings, a rotatable drive member in said casing, and an endless member actuated by said drive member and -passing freely through said intake opening, wherein water passage clearance is provided in said chamber at one side of said drive member, between said intake and `outlet openings, and the casing w-all is positioned adjacent to the drive member and endless member in rotational direction beyond said outlet.

A further object is to provide a pump having a feed passage, an outlet and a restricted by-pass branching from said outlet wherein an endless member is shifted at high speed through the feed passage to and through said restricted bypass to force liquid through said feed passage for discharge at said outlet.

Other objects will be apparent from the de-V scription and appended claims.

In the drawing:

Fig. 1 is a longitudinal vertical section of a pump mounted in operative relation to |a well and taken on line I-I' of Fig. 2.

Fig. 2 is a fragmentary longitudinal vertical sectional view taken on line 2 2 of Fig. 1.

Fig. 3 is an enlarged fragmentary sectional detail view taken on line 3 3 of Fig. 1.

Fig. 4 is an enlarged fragmentary sectional detail view taken on line 4 4 of Fig. 1.

Fig. 5 is an enlarged fragmentary sectional detail view taken on line 5 5 of Fig. 1.

Fig. 6 is an enlarged fragmentary sectional detail view taken on line 6 6 of Fig. 1.

Referring to the drawing which illustrates one embodiment of the invention, numeral I'll designates a pump head which is mounted on a base plate II above a well suitably lined by a tubular casing I2.

The pump head I0 comprises a housing I3 preferably formed of two -parts whose par-ting plane Ill extends vertically and substantially centrally of the housing. Housing I3 is provided with an upper chamber I5 and a lower chamber I6 smaller than chamber I5. An intake passage I1 extends substantially vertically from the bottom of housing I'3 for tangential marginal communication with chamber I5. An outlet passage I8 extends tangentially from the margin of chamber I5, preferably opposite passage I1. Apassage I9 positioned intermediate the intake passage I1 and outlet passage I8 affords communication between chambers I5 yand I 5, and is separated from passage I1 by face contacting internal ribs 20 of the two housing parts and is separated from passage I8 by face contacting internal ribs 2l of the two housing parts. A passage 22 extends tangentially downwardly from chamber I1 to the bottom of the housing in adjacent parallel relation to passage I1 but separated therefrom .by ribs 23. The margins 23 the housing parts and ribs 2E), 2I are provided with suitable bolt holes 24, and may have a gasket (not shown) interposed therebetween.

The two housing parts are provided with projections 25 concentric with chamber I5 to receive bearings 26 for journaling a drive shaft 21 such as the shaft of a suitable motor 28 mounted on plate II. A securing cap 29 for a sealing gland or collar 33 may be provided for effecting a sealed joint between the shaft .and housing at the point at which said shaft enters the housing.

An impeller 3|' is xedly mounted on shaft 21 and ts snugly in chamber I5, said impeller being rotatable in said chamber. Impeller 3| is provided with a central circumferential groove 32 constituting the same a sheave. A series of radially extending Vanes 33 project from the impeller at opposite sides of groove 32.

An idler sheave 34 is mounted on a shaft 35 journaled in bearings 36 mounted in cup-shaped projections 31 at opposite sides 4of the housing I3 lconcentrically of chamber It.

The upper ends of ribs 2li, 2| are recessed or outwardly off-set from the parting plane of housing I3, and inserts 38, 39 respectively, are mounted in said recesses with their upper ends projecting into said chamber I5 centrally of the transverse dimension thereof to form open-ended channels or grooves 40 at opposite sides of said inserts through which impeller varies 33 may move as the impeller rotates. Insert 38 carries a block 4I, preferably formed of rubber or like material, which projects upwardly from said insert to iit snugly in the groove 32 of the impeller. between the impeller vanes 33 to constitute a suction block.

Base plate II has an opening therein concentric with the lower end of intake passage I5, but of larger diameter, which opening is larger at the top than at the bottom of said plate to form a shoulder SI intermediate the faces of said plate. The upper end of a conduit 42 is provided with an annular out-turned iiange 43 of a size to pass freely through the restricted portion of the plate opening. A two-part collar 44 fits in the plate opening supported on a shoulder 6I and snugly encompasses the upper end of conduit 42 and underlies iiange 43. A suitable externally threaded nut or ring 45 provided with suitable openings 46 for manipulation of the ring by a Spanner wrench is threaded in the plate opening to press upon ange 43 and clamp said flange between itself and collar 44. Ring 45 is preferably provided with a tapered annular projection 41 adjacent its inner periphery which seats against the bend between conduit 42 and its flange 43 to enhance the clamping action of said ring and prevent distortion of the conduit. Conduit 42 may be formed from copper, stainless steel or any other suitable material, and is preferably of thin wall section. A second opening 63 in plate I l registers With head passage 22.

Conduit 42 must be formed of multiple conduit units for use in a well of average or greater than average depth. To accommodate jointing of the thin wall conduit units, the ends of each unit are provided with annular out-turned flanges 4S adapted for face contacting engagement with flanges of adjacent aligned conduits. A ring 49 of a thickness approximately equal to the width of flange 43 fits around the end of one conduit at a joint, and an elongated externally screw threaded collar 5i) of, an outer diameter greater than that of flanges 48 fits around the other conduit at a joint. Ring 49 and collar 50 both have end contours to t solidly and supportingly against iianges 3. A cap 5I having an inturned apertured end 52 bears against the end of ring 49 and is threaded on collar 5i), thereby serving to urge conduit anges 48 into tight engagement without deforming or injuring the thin walled conduit. Collar 53 and cap 5I may be provided with sockets 53 to accommodate tightening thereof by a Spanner wrench.

Conduit 42 extends into the well adjacent and preferably below the water level, although it may terminate above the water level as shown; and its lower end 54 outwardly flared. A pair of clamps 55 are adjustably mounted on the lower end of conduit 42 in longitudinally spaced relation. Clamps 55 support a comparatively short conduit 53v in parallel relation to conduit 42. The conduit 5S has a flared upper end 5l and mounts a casting at its lower end. The casting has a tubular upper end 58 communicating with conduit 58 and its lower end constitutes a housing 59 which journals a sheave BIJ.

A flexible endless member 62 of any suitable character and construction constitutes the actuating member of the pump. The member 62 may be formed of any suitable material which is strong enough to support its own weight and to withstand the hard wear incident to high speed operation. For example, in a shallow well, ordinary sash cord may be used; while in a deep well it will be necessary to use a member having a flexible rnetal core and a iiexible liquid resisting coating. The member 62 is of uniform cross section throughout and is of a size to pass freely through conduit 42 and to have clearance therein. Member 62 is trained around lower sheave 6B, passes upwardly through conduit 42 and passage II of the housing, extends around impeller 3l, seating in circumferential groove 32 thereof between vanes 33, thence passes through passage I9, around sheave 34 and through passage 22 into well casing i2 and conduit 5G and casting 53, 49.

Motor 2S serves to rotate the impeller 3I at high speed, thereby shifting endless member 62 therewith, As member 62 passes through the liquid between sheave 6! and the lower end of conduit 42, it serves to propel liquid to and upwardly through the conduit and into the pump housing. While it is preferable to immerse the lower end of conduit 42 in the liquid, this is not essential as long as said conduit terminates adjacent the liquid level. In one test it was found that the pump tested operated without diminution of efficiency, pressure or volume when the conduit was positioned twelve inches above the level of the water being pumped. This dimension is given as illustrative only, since the spacing permissible will vary under Various conditions and with different types of liquids. The member 52 must have clearance in conduit 42. For example, goods results are obtained where the member 52 is of a cross sectional dimension approximately one-half the interior diameter of the conduit @2, though the proportions of these parts may also vary within a wide range. The volume of liquid pumped and the pressure thereof in any given pump construction increases with increased operating speed.

' It is not essential that an impeller be used with the device, though increased emciency is obtained thereby.

The insert 39 which fits closely adjacent member 62, and affords clearance for vanes 33, serves to restrict the opening for member 62. This arrangement, coupled with the tangential arrangement of discharge passage I8 with reference to the impeller, reduces to a minimum the losses in operating efficiency of this type of pump. However, liquid carried by the impeller vanes and by member d2 may drain through passages I9, 22 of the housing and back to the liquid supply.

Rubber block 4I carried by insert 38 fits into and bears on groove 32 of the impeller to constitute a suction block.

It will be observed that this pump possesses a large number of practical advantages. It is selfpriming by virtue of the positive lifting action of member 62 as it moves upwardly through the liquid supply. It is self-draining and consequently is not subject to freezing. When the pump is connected with a` pneumatic storage tank, it forces air in the conduit 42 and associated passages into the tank ahead of the column of water upon each starting operation and thereby assists in maintaining a head of air pressure in said tank. The pump has only one nonrotating operating part (member 62) and this moves unidirectionally to minimize friction and wear. The assembly is simple and inexpensive by reason of the simplicity of the parts. The pump is applicable to any type of well by merely having the size and capacity thereof proportioned to the depth of the well. The mounting of the lower sheave adiustably on feed conduit t2 makes for simplicity of application and ease of replacement for repair and adjustment, as upon lowering of the level of the liquid to be pumped.

It will be obvious that various changes may be made in the specific construction of the device without departing'from the spirit of the invention as herein described and claimed. One such change, especially applicable in wells of small diameter, is entire elimination of conduit 4?., whereby the movement of the endless member is utilized to elevate the liquid inthe well or liquid source to a surface pump or other suitable liquid collector, and the endless member suspends a suitable sheave, suitably balanced, as by a suspended counterweight, within the liquid source and below the liquid level thereof.

We claim.:

1. The combination with a source of liquid supply, of a sheave positioned below the liquid level of said source, a drive sheave positioned above the level of said liquid, an endless flexible elongated member trained around said sheaves and moving at high speed, and means providing a continuous liquid confining passage extending upwardly from adjacent the level of said liquid and above the lower sheave to an outlet adjacent said drive sheave, the upper end of said passage being curved concentric with and being defined in part by said drive sheave, the upwardly extending run only of said flexible member passing through said passage for substantially its full length to force liquid from said source upwardly through said passage, said passage being substantially uniform throughout its length and of a cross sectional area to retain liquid within the sphere of inuence of said moving flexible member, whereby operation of said member normally maintains said passage lled with liquid to the level of said outlet.

h2. A pump comprising a housing having a liquid passage of substantially uniform cross sectional area between a liquid intake and a liquid outlet, a rotatable member journaled in said housing intermediate said intake and -outlet and partially dening said passage, an insert xed in said housing between said intake and rotatable member and engaging the periphery of said rotatable member to partially denne the inner wall of said passage, an elongated tube depending from said housing and communicating with said intake, said tube being of substantially the same cross sectional area as said passage, a sheave, means for journaling said sheave below the bottom of said tube and within a source of liquid, an endless member trained around said rotatable member and sheave with a portion thereof eX- tending through said tube and intake and a portion exteriorly of said tube, and means for driving said endless member at high speed withl the portion thereof in said tube moving upwardly.

3. A pump as defined in claim 2, wherein said housing has a restricted passage partially defined by said rotatable member and branching from said outlet through which said endless member passes.

4. A pump comprising a hollow housing having internal ribs defining a liquid passage interrupted by a cavity, a drive sheave journaled in said housing within said cavity to dene the intermediate portion of ,said passage, an elongated tube extending downwardly frcm said housing and communicating with said passage, said passage being substantially of uniform size and equal to the size of said tube, a fixture adjustably carried by the lower end of said tube, a sheave journaled by said fixture below said tube and within a body of liquid, and an endless member trained around said sheaves with its upwardly shifting run passing through said tube, and meansfor moving said member at high speed.

5. The combination with a well, of a tube extending into said well, means carried by said tube for journaling a sheave below said tube and below the liquid level of said well, a chambered pump head, a drive sheave journaled in said pump head, internal ribs in said pump head terminating adjacent said drive sheave and cooperating therewith to define the inner wall of a substantially uniform liquid passage communicating with said tube and extending past said drive sheave, and an endless member trained around said sheaves, and means icr moving said member at high speed through said tube and passage.

6. In a pump having an endless flexible-elongated actuating member, the combination of means providing a substantially vertical uniform liquid passage through which an upwardly moving part or" said actuating member passes at high speed, a sheave guiding said endless member, a hollow member through which a downwardly moving part of said actuating member passes, said hollow member journaling said sheave within a body of liquid, and means carried by the lower end of said means for mounting said hollow member.

'7. A pump comprising a chambered housing having an intake and an outlet and an arcuate portion therebetween, a drive sheave journaled in said housing concentric with said arcuate portion and of a width to span the housing chamber, an interior rib in said housing extending from said intake to said sheave in substantially tangential relation to said sheave, a second interior rib extending tangentially from said sheave to said outlet, said ribs cooperating with said sheave to define the inner wall of a substantially continuous liquid conning passage of uniform cross sectional area, an elongated depending tube communicating with said intake and of the same internal cross sectional area as said passage, an endless member extending through said tube and passage and trained around said sheave, the inner end of said second rib being spaced from said sheave a distance only slightly greater than the thickness of said endless member, and means for driving said sheave.

8. The combination dened in claim 7, and a sheave carrier extending below and carried by the lower end of said tube, and a sheave journaled in said carrier.

9. The combination deiined in claim 7, and an idler sheave journaled in said housing below said drive sheave and adjacent said iirst rib to guide the downwardly extending run of said endless member.

DAVID C. HAY. ROY W. HAYS.

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