US3785752A - Portable submersible pump - Google Patents

Portable submersible pump Download PDF

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US3785752A
US3785752A US3785752DA US3785752A US 3785752 A US3785752 A US 3785752A US 3785752D A US3785752D A US 3785752DA US 3785752 A US3785752 A US 3785752A
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Prior art keywords
pump
impeller
flexible
submersible pump
casing
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Expired - Lifetime
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C Crespo
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C Crespo
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/04Shafts or bearings, or assemblies thereof
    • F04D29/046Bearings
    • F04D29/049Roller bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00Pumping installations or systems
    • F04D13/02Units comprising pumps and their driving means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/04Shafts or bearings, or assemblies thereof
    • F04D29/043Shafts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/70Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00Components
    • F05B2240/60Shafts
    • F05B2240/62Shafts flexible

Abstract

A submersible pump wherein the motor unit is removed from the liquid environment and the motive force for the pump impeller, located in the liquid to be pumped, is transmitted from the motor unit by means of a flexible power shaft. The pump is portable and may have a gear box or a clutch. In addition, the present submersible pump may take the form of an axial flow pump when low to moderate lifts are required at large capacities. A special flexible shaft terminal is provided wherein the pump and impeller are attached directly to the flexible shaft unit.

Description

. I United States Patent 11 1 1111 3,785,752 Crespo 1 Jan. 15, 1974 [54] PORTABLE SUBMERSIBLE PUMP 504,047 7/1930 Germany 415/122 [76] Inventor: Carlos A. Crespo, PO. Box 906, g g g Stamford Conn. 06904 [22] Filed: Sept 1971 Primary ExamineF-C. .1. l-Iusar [2]] Appl. No.: 180,787 Assistant ExaminerLeonard Smith Attorney-Alfred E. Miller [52] US. C1. ..,4l7/319, 64/2 R, 415/123,

1 417/423 1511 1111.01. F04b 35/06, Fl6c 1/02 [57] ABSTRACT [58] Field of Search 415/122 123 124 1 A submersible pump wherein the motor umt 15 re- 415/140 64/2 417/223 423 moved from the liquid environment and the motive 56] References Cited force for the pumplmpeller, located in the liquid to be pumped, is transmitted from the motor unit by means UNITED STATES PATENTS of a flexible power shaft. The pump is portable and 1,682,502 8/1928 Gusler et a1. 417/319 X may have a-gear box or a clutch. In addition, the pres- 3,308,764 WaIker ent ubmersible pump may take the form of an axial 3,273,189 9/1966 Lemon et 415/123 X flow pump when low to moderate lifts are required at 26436l5 6/1953 Murphy et 415/140 large capacities. A special flexible shaft terminal is 2,788,198 4/1957 Anderson 64/2 R X d h th d n h d 2,784,562 3 1957 Gamundi 417/223 x 1 6 w e pump er are 6 directly to the flexible shaft unit. FOREIGN PATENTS OR APPLICATIONS 1,032,542 3/1953 France 415/122 3 Claims, 10 Drawing Figures PATENTEUJAN 1 5:914

SHEET 1 BF 3 FIGI INVENTOR. CARLOS ACRESPO RNEV PATENTED JAN 1 5W4 SHEET 2 UF 3 82 FIG. 5

FIG. 8

I04 n4 d W ||4 no "lll FIG. 7

\NVENTOR.

CARLOS A. CRESPO RNEY/ 1 PORTABLE SUBMERSIBLE PUMP The present invention relates to a portable submersible pump in which the impeller unit is within the liquid to be pumped, while the motor unit is located outside the liquid in a'dry area.

' It is an object of the present invention to provide a split function submersible pump which permits a motor selection from a wide range of motor types. I

Another object of the present invention is to provide a portable submersible pump that can be manufactured at a' smaller cost than other pumps of this type that are currently available.

It is a further object of the present invention to provide a submersible pump which is not restricted to an electric power source but may utilize as a power source any device capable of producing sustained circular motion.

A major object of the present invention is to provide a flexible power transmission line between the separated motor and impeller units of the pump thereby permitting the easy adaptability of the portable pump to different locations as well as locations that may be inacessible to known submersible pumps.

Another object of the present invention is to provide a submersible pump which can be adapted to accomodate a reduction gear box or a clutch. The use of a clutch with the present device can eliminate any undesirable stresses caused by the motor starting torque.

A further object of the present invention is the ability to reduce the size of the pump so that it is comparav tively small aend easy to transport.

It is another object of the present invention to provide a portable submersible pump which is reliably effective for the purposes intended.

The invention will now be more fully described with reference to the accompanying drawings wherein:

' FIG. 1 is a side elevational view of the entire assembly of the portable submersible pump constructed according'to the teachings of the present invention.

FIG. 2 is a partial sectional and side elevational view of the flexible shaft connecting the motor and the impeller'of the pump.

FIG. 3 is a side elevational view of a slightly modified construction of the present invention.

FIG. 4 is a side elevational view of another modification of the present invention. I

FIG. 5 is a partial sectional and a partial side elevational view of a portable submersible pump of the volute type.

FIG. 6 is a sectional view of the pump having a strainer to limit the intake of solids therein.

FIG. 7 is a sectional view of a modification of the present invention in which the impeller and pump units are connected directly to the flexibl shaft.

FIG. 8 is a partial sectional and a partial elevational view of some of the details of construction of the flexible driving shaft and its coupling means.

FIG. 9 is a partial sectional and apartial elevational view of an alternative construction of the present invention utilizing an axial flow pump and FIG. 10 is a bottom plan view of the structure-shown in FIG. 9.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, there is shown a portable 2. submersible pump referred to generally by humeral 14 in which the impeller unit 16 only is submerged in the liquid L. It will be noted that the motor unit 24 is not in the liquid environment but is mounted a distance away from the impeller 16 on dry land.

The power transmission between the motor unit 24 and the impeller unit 16 takes the form of a flexible driveshaft referred to generally by the numeral 18. A discharge hose 22 is shown for evacuating the liquid handled by the impeller unit 16 of the submersible pump 14. A coupling 32 couples discharge hose 22 to the discharge conduit extension 34.

Connected between the flexible drive shaft 18 and the impeller unit 16 is a mechanism 26 such as gears or a hydraulic system (not shown) that is operative to increase or reduce the torque or RPM, as required. At the other end of the flexible shaft 18 a device 28 can be connected between the flexible shaft 18 and motor unit 24 in the form of a clutch-whereby the stresses created by the starting torque of the motor may be reduced or entirely eliminated.

When it becomes necessary to recover a pump from a hole or crevice,'a rope or chain 36 is attached at one end to an eyebolt 40 on the housing of the impeller unit 16 while the other end of the rope is secured on dry land. A strainer 42 is attached to the impeller housing in order to eliminate the ingestion of solid particles into the impeller unit 16 with the liquid.

The flexible shaft 18 is shown in greater detail in FIG. 2. In this regard, the flexible driving core constitutes a multiplicity of layers of wire 44 which rotate within a 1 bendable metal, or rubber-covered flexible casing 46.

Mounted on the ends of the casing 46 are ferrules 48 and fittings 49 which attach to terminals (not shown) for the drive shaft 18.

FIG. 3 shows a slightly modified construction of the present invention in which the flexible shaft 52 and the discharge hose 53 are secured together by means of clamps 54. Moreover, the impeller housing is provided with hinged legs 51, for elevating the housing from the surface beings pumped, if desired. A handle 55 is shown for ease in transporting the pump from one location to another.

As seen in FIG. 4, an exterior sheath or cover 58 may be installed on the impeller housing 59 by means of an annular flexible belt or clamp 62. This arrangement creates a unitary construction of the pump impeller unit 59, discharge hose 60 and flexible shaft 61. The sheath '58 is of a strong durable material such as rubber, plastic or canvas. It can be readily seen that this construction permits the recovery of the pump by means of gripping the sheath 58 and lifting, thereby eliminating a device such as a chain or rope 36 as seen in FIG. 1.

FIG. 5 illustrates a portable submersible pump of the volute casing type which is desirable for use under conditiosn where there is a high percentage of solids in the liquids. The reference numeral 64 refers to the volute casing which is provided with a pump housing bottom 66 secured thereto by means of bolts 77. A bearing supportis secured to the volute casing 64 by bolts 76. The casing 64 is furthermore provided with a pump stand 68. The impeller 71 in the volute casing 64 is connected through a discharge hose 78. The bottom of casing 64 is provided with a pump intake opening 81. The rotating centrifigal pump impeller 71 is driven by an impeller shaft 72 rotatably mounted in bearing 73. The

impeller shaft 72 is connected to flexible shaft 74 by means of a coupling 79. The impeller shaft seal bears the reference numeral 80 while th eyebolts 75 anchor the lift rope 82.

FIG. 6 discloses a pump embodiment having a strainer 88 at the inlet of the impeller in orderto limit the intake of solids into the pipe. The pump housing 85 has a lower diffuser 86 in the pump intake which is secured to the housing 85 by means of bolts 87. The de vice is provided with ball bearings 93 having a bearing cover 91. The bearings are also' provided with seals 92. A discharge hose 95 evacuates the liquid from the pump as described hereinbefore.

FIG. 7 discloses a pump construction wherein the pump bearings and seals have been eliminated from the pump. Thus, the impeller unit in housing 100 is attached directly to the flexible shaft unit. The pump impeller 71 is seen attached to the fitting 103 by means of a nut 102. Additionally, the flexible shaft terminal 104 is secured to the pump by means of the cover 105 secured by screws 99 and sealed by a gasket 98. A strainer 118, the function of which is explained above, is secured to the bottom of the housing 100.

The special flexible shaft terminal of FIG. 7 is shown in greater detail in FIG. 8. This terminal is so constructed to form a mechanical seal unit to protect the bearings and the flexible core of the shaft. Thus, the outer conical surface of the casing terminal mates precisely with the flexible shaft terminal cover 105 and makes rigid the connection with the pump. Accordingly, the fitting 103 for securing the impeller 71 is provided with a woodruff key 109. The unit further has a mechanical seal unit 110 and spaced ball bearings 111. A pair of retaining rings 114 are provided for the ball bearings. The seal unit 110 has a cover'115, and the flexible casing 112 is shown cut away to reveal the interior flexible core 113. Bearing lubrication of the device may be achieved through opening 117 which is closed by screw 119.

FIGS. 9 and illustrate another embodiment of the present invention in which an axial flow or propeller pump type is used. This construction is particularly desirable for low to moderate lifts at large capacities. In

this structure, a pump housing 120 is shown having a flexible shaft terminal holder 121 and a bracket 122. The latterby means of screws 123 secures the flexibl shaft terminal 126 in the pump. The impeller 124 is secured to the flexible shaft terminal 135' by means of nut 125. The pump discharge 133 is connected to the pump housing 120 and is in turn connected to the flexible hose discharge 132. A flexible shaft unit 127 is shown having a flexible shaft entry unit 130 which is sealed by means of an elastic grommet and cover 128. The shaft 127 is further provided with a reinforcement section 131 which is sealed around the flexible casing in order to avoid the compression of the rotating flexible core in that sealed area.

I claim:

1. A portable submersible pump comprising an impeller provided with a pump housing, the latter having a liquid inlet therein, an impeller mounted in said pump housing and adapted to be operative in a liquid environment, a separate motor unit spaced from said pump and adapted to be located in a dry environment, a flexible power shaft having a rotatable core and having one end connected to said motor unit, a casing for said flexible shaft provided with a terminal secured to said pump housing, said rotatable core having a fitting at the end of the rotatable core which is connected to the impeller whereby the motor operates said impeller, a bearing and a mechanical seal in said flexible shaft casing terminal and said seal surrounding said fitting and being placed between said fitting and said bearing, and a discharge connection connected to said pump housing for discharging said liquid.

2. A portable submersible pump as claimed in claim 1 further comprising a woodruff key for securing said fitting to said impeller.

3. A portable submersible pump as claimed in claim 1 wherein said casing terminal is provided with an external conical surface, and a cover secured to said pump housing having an internal conical surface which mates precisely with said external conical surface of said casing terminal.

Claims (3)

1. A portable submersible pump comprising an impeller provided with a pump housing, the latter having a liquid inlet therein, an impeller mounted in said pump housing and adapted to be operative in a liquid environment, a separate motor unit spaced from said pump and adapted to be located in a dry environment, a flexible power shaft having a rotatable core and having one end connected to said motor unit, a casing for said flexible shaft provided with a terminal secured to said pump housing, said rotatable core having a fitting at the end of the rotatable core which is connected to the impeller whereby the motor operates said impeller, a bearing and a mechanical seal in said flexible shaft casing terminal and said seal surrounding said fitting and being placed between said fitting and said bearing, and a discharge connection connected to said pump housing for discharging said liquid.
2. A portable submersible pump as claimed in claim 1 further comprising a woodruff key for securing said fitting to said impeller.
3. A portable submersible pump as claimed in claim 1 wherein said casing terminal is provided with an external conical surface, and a cover secured to said pump hoUsing having an internal conical surface which mates precisely with said external conical surface of said casing terminal.
US3785752D 1971-09-15 1971-09-15 Portable submersible pump Expired - Lifetime US3785752A (en)

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885885A (en) * 1973-10-01 1975-05-27 Highway Equipment & Supply Com Fluid propelling apparatus employing flexible drive shaft
FR2429378A1 (en) * 1978-06-19 1980-01-18 Europ Propulsion Portable tanker emptying pump for operation at sea - operated by hydraulic motor and floating on the oil surface with flexible piping
US4335585A (en) * 1978-01-23 1982-06-22 Hoffco, Inc. Lawn trimmer construction
US4685868A (en) * 1985-08-08 1987-08-11 Bodensteiner Donald A Vacuum jet apparatus
US5161426A (en) * 1990-09-17 1992-11-10 Ford Motor Company Automotive speedometer assembly with integral anti-fouling grease seal
US5397270A (en) * 1993-04-28 1995-03-14 Itt Corporation Flex shaft cover retention device
US6354949B1 (en) 2000-03-15 2002-03-12 Bettcher Industries, Inc. Maintenance free flexible shaft drive transmission assembly
US6471495B1 (en) 1998-01-15 2002-10-29 Lockheed Martin Corporation Miniature well and irrigation pump apparatus
US6474962B1 (en) 1998-01-15 2002-11-05 Lockheed Martin Corporation Miniature well and irrigation pump apparatus
US6494674B1 (en) * 1999-11-22 2002-12-17 Sandy Ochoa Portable submersible liquid pump attachment
US20070231159A1 (en) * 2006-03-28 2007-10-04 Itt Manufacturing Enterprises, Inc. Flexible drive pump
US20070243512A1 (en) * 2004-12-02 2007-10-18 King Lynn R Trauma Training System
US20070292829A1 (en) * 2004-12-02 2007-12-20 King Lynn R Intravenous (iv) training system
US20080190838A1 (en) * 2003-08-15 2008-08-14 Angus Reardon Bailing Apparatus
US20110008185A1 (en) * 2007-10-22 2011-01-13 Parchem Construction Supplies Pty Ltd Portable liquid pump
US20120006423A1 (en) * 2010-07-09 2012-01-12 Cheng-Kuan Wu Water Inlet Unit for an Amphibious Pump
WO2011139248A3 (en) * 2010-05-03 2012-03-01 Osman Kucuk A pumping device with a flexible shaft
US20120321492A1 (en) * 2011-06-15 2012-12-20 Silicon Valley Micro E Corporation Fan with flexible drive shaft
US20140179448A1 (en) * 2012-12-26 2014-06-26 Ge Oil & Gas Esp, Inc. Flexible joint connection

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682502A (en) * 1927-02-07 1928-08-28 George T Gusler Basement or cellar pump
DE504047C (en) * 1929-01-26 1930-07-30 Ernst Borrmann Transportable Absenkpumpe
GB538658A (en) * 1940-02-14 1941-08-12 Ladislaus Reich Improvements in and relating to pumps
US2643615A (en) * 1948-09-01 1953-06-30 Raymond J Murphy Centrifugal pump with center intake
FR1032542A (en) * 1951-02-16 1953-07-02 Removable submersible pump for thick liquids
US2784562A (en) * 1953-07-08 1957-03-12 Eaton Mfg Co Drive for vehicle air conditioning apparatus
US2788198A (en) * 1952-09-30 1957-04-09 Verne R Anderson Air conditioning apparatus
SU142880A1 (en) * 1958-04-12 1960-11-30 ков М.А. Бел Manual centrifugal pump
US3273189A (en) * 1965-06-22 1966-09-20 Gen Business Corp Cleaning apparatus
US3308764A (en) * 1965-05-04 1967-03-14 Donald C Walker Pump and drive means therefor

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682502A (en) * 1927-02-07 1928-08-28 George T Gusler Basement or cellar pump
DE504047C (en) * 1929-01-26 1930-07-30 Ernst Borrmann Transportable Absenkpumpe
GB538658A (en) * 1940-02-14 1941-08-12 Ladislaus Reich Improvements in and relating to pumps
US2643615A (en) * 1948-09-01 1953-06-30 Raymond J Murphy Centrifugal pump with center intake
FR1032542A (en) * 1951-02-16 1953-07-02 Removable submersible pump for thick liquids
US2788198A (en) * 1952-09-30 1957-04-09 Verne R Anderson Air conditioning apparatus
US2784562A (en) * 1953-07-08 1957-03-12 Eaton Mfg Co Drive for vehicle air conditioning apparatus
SU142880A1 (en) * 1958-04-12 1960-11-30 ков М.А. Бел Manual centrifugal pump
US3308764A (en) * 1965-05-04 1967-03-14 Donald C Walker Pump and drive means therefor
US3273189A (en) * 1965-06-22 1966-09-20 Gen Business Corp Cleaning apparatus

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885885A (en) * 1973-10-01 1975-05-27 Highway Equipment & Supply Com Fluid propelling apparatus employing flexible drive shaft
US4335585A (en) * 1978-01-23 1982-06-22 Hoffco, Inc. Lawn trimmer construction
FR2429378A1 (en) * 1978-06-19 1980-01-18 Europ Propulsion Portable tanker emptying pump for operation at sea - operated by hydraulic motor and floating on the oil surface with flexible piping
US4685868A (en) * 1985-08-08 1987-08-11 Bodensteiner Donald A Vacuum jet apparatus
US5161426A (en) * 1990-09-17 1992-11-10 Ford Motor Company Automotive speedometer assembly with integral anti-fouling grease seal
US5397270A (en) * 1993-04-28 1995-03-14 Itt Corporation Flex shaft cover retention device
US6471495B1 (en) 1998-01-15 2002-10-29 Lockheed Martin Corporation Miniature well and irrigation pump apparatus
US6474962B1 (en) 1998-01-15 2002-11-05 Lockheed Martin Corporation Miniature well and irrigation pump apparatus
US6494674B1 (en) * 1999-11-22 2002-12-17 Sandy Ochoa Portable submersible liquid pump attachment
US6354949B1 (en) 2000-03-15 2002-03-12 Bettcher Industries, Inc. Maintenance free flexible shaft drive transmission assembly
US20080190838A1 (en) * 2003-08-15 2008-08-14 Angus Reardon Bailing Apparatus
US7887330B2 (en) 2004-12-02 2011-02-15 The United States Of America As Represented By The Secretary Of The Army Trauma training system
US9342996B2 (en) 2004-12-02 2016-05-17 The United States Of America, As Represented By The Secretary Of The Army Trauma training system
US20070292829A1 (en) * 2004-12-02 2007-12-20 King Lynn R Intravenous (iv) training system
US8342852B2 (en) 2004-12-02 2013-01-01 The United States Of America As Represented By The Secretary Of The Army Trauma training system
US20070243512A1 (en) * 2004-12-02 2007-10-18 King Lynn R Trauma Training System
US20110111380A1 (en) * 2004-12-02 2011-05-12 Government Of The United States, As Represented By The Secretary Of The Army Trauma Training System
US10347157B2 (en) 2004-12-02 2019-07-09 The United States Of America, As Represented By The Secretary Of The Army Trauma training system
US20070231159A1 (en) * 2006-03-28 2007-10-04 Itt Manufacturing Enterprises, Inc. Flexible drive pump
WO2007127194A2 (en) * 2006-04-24 2007-11-08 U.S. Government As Represented By The Secretary Of The Army Trauma training system
WO2007127194A3 (en) * 2006-04-24 2008-04-24 Us Gov Sec Army Trauma training system
US20110008185A1 (en) * 2007-10-22 2011-01-13 Parchem Construction Supplies Pty Ltd Portable liquid pump
US8393877B2 (en) 2007-10-22 2013-03-12 Parchem Construction Supplies Pty Ltd Portable liquid pump
WO2011139248A3 (en) * 2010-05-03 2012-03-01 Osman Kucuk A pumping device with a flexible shaft
US20120006423A1 (en) * 2010-07-09 2012-01-12 Cheng-Kuan Wu Water Inlet Unit for an Amphibious Pump
US8297952B2 (en) * 2010-07-09 2012-10-30 Cheng-Kuan Wu Water inlet unit for an amphibious pump
US8662866B2 (en) * 2011-06-15 2014-03-04 Silicon Valley Micro E Corp. Fan with flexible drive shaft
US20120321492A1 (en) * 2011-06-15 2012-12-20 Silicon Valley Micro E Corporation Fan with flexible drive shaft
US20140179448A1 (en) * 2012-12-26 2014-06-26 Ge Oil & Gas Esp, Inc. Flexible joint connection
US9260924B2 (en) * 2012-12-26 2016-02-16 Ge Oil & Gas Esp, Inc. Flexible joint connection

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