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Publication numberUS2383424 A
Publication typeGrant
Publication dateAug 21, 1945
Filing dateMay 6, 1944
Priority dateMay 6, 1944
Publication numberUS 2383424 A, US 2383424A, US-A-2383424, US2383424 A, US2383424A
InventorsStepanoff Alexey J
Original AssigneeIngersoll Rand Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2383424 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Aug 21, 1945. A. J. STEPANQFF 2,383,424


Filed May '6, 1944 I l as I 47 '11H27 4 8 44 20 & B 42 25 65 has 34 62 es 63 60; 65 59 65' 30 :,/59

28;@ Il 3 aa 56 a9 35 .5534 49 f' 41 38 31 5 2 54 55 33"` 58 i Z771 I 35 y 5657 54 52 EQ-2' J5 le'a/A TOR ,e BY ,y l a'wff ws ATTORNEY.

pumping mechanism Pateated'Aug. 21, 1945 UNITED STATESv PATENT ol-FICE PUMP a corporation of New Jersey minsten, N. J., aunar New York, N. Y.,

Application May 6, 1944, Serial No. 534,392

2 Claims. (Cl. 103-104) This invention relates to pumps, and more particularly to vertical pumps intended for permanent installation in a pit or reservoir and to be submerged in the liquid intended to be pumped.

One object of the invention is to enable the rotative parts of the pump to be conveniently removed from the pump casing for purposes of inspection and repairs.

A further object is to enable the rotative parts o1' the pump to be removed from the without disturbing the casing parts of the pump or the conduits connected thereto.

Other objects will be in part obvious and in part pointed out hereinafter.

In the drawing accompanying this specicai tion and in which similar reference numerals refer to similar parts,

Figure l is a side elevation of a pump constructed in accordance with the practice of the invention, and

Figure 2 is an elevation of the pump partly broken away.

Referring more particularly to the drawing, the pumping mechanism, designated in general by 26, is of the vertical type and is shown supported entirely by and depending from a floor 2| to which it may be secured in any well known manner.

The'pumping mechanism 20 is intended more particularly for pumping iluid from a pit or reservoir (not shown). It comprises a base member 22 that rests upon the floor 2| and has mounted thereon a suitable motor onlythe cas. ing 23- of which is shown.

In the iioor 2| and the lower end of the base 22 are concentric openings 24 and 25, respec tively, and from the base depends a tubular extension 26 that extends through the opening 24 and is secured to the lower side of the base member 22 by bolts 21. On the lower end of the extension 26 is a flange 28 that abuts an end of a pump casing 29 and is fastened thereto by bolts 36. vThe pump casing 29 depends from and is supported entirely by the extension 26, and its intermediate'portion constitutes a pumping chamber 3| that is encircled by a volute discharge chamber 32 having a discharge port 33 opening into a discharge conduit 34 secured to the casing 29 by bolts 35 and extending upwardly through the floor 2|.

The pumping chamber 3| contains an impeller 36 of the double suction' type that is mounted upon 'a vertical shaft 3l extending vide a correct degree said opening.

through the extensionv 26 and the base member 22 for connection with the shaft of the driving motor. The impeller 36 is mounted'upon a portion 38 of reduced-diameter of the shaft. Its upper end seats against a shoulder' 39 on the shaft and is held thereagainst' by a nut 40 threaded' on the portion 38 and acting against the lower end of the impeller.

shaft serves further to secure the shaft and the impeller against relative rotation.

, The shaft 31 extends through an aperture 62 in a plate 43 lying in the lower portion of the base member 22 and secured xedly thereto by bolts 44 to cover the upper end of the extension 28, and on the plate 43 is a stuiiing box 45 containing sealing material 46 for effecting a seal along the surface of the shaft. The stuffing box is secured to the plate 43 by bolts 6l, and a packing member i6 encircles the aperture 42 and is clamped between the plate 43 and the stuing box 45.

In the upper and lower sides of the pump casing 29 are openings 49 and 5|) to receive, respectively, suction bells 5| and 52. The suction bell 52 is secured iixedly to the casing by bolts 53 and has a plurality of radial arms 54 to support, at their inner ends, a bearing 55 .of cup-shape that contains a bushing 56 to accomo date the lower end 5,1 of the shaft 3l. lBoth openings 49 and 5|) are preferably of the same diameter but it is desirable that the opening t9 be of somewhat larger diameter than the 1mpeller so that the latter may pass readily through is adjustable in the openendwise therein to proof clearance between the suction bell and the upper vanes 58 of the i peller. To this end the suction bell 5| is provided with the radial arms 59 that carry at their inner ends a bearing 60, and in the bearing 60 is a bushing 6| having an external 'ange at its The suction bell 5| ing 49 being slidable lower end to overlie and engage the corresponding end of the bearing 60.

The s1eevej6| projects beyond the upper end of the bearing 60 and is threaded into the lower end of a tubular, holder 62 encircling the shaft 31. Preferably, a sleeve 63 is threaded upon the bushing 6| to seat against the upper end of the bearing 60 for clamping the bushing 6| to the bearing, and the holder 62 is, in turn, seated against the upper end of the sleeve 63 to lock the said sleeve firmly in position.

The Upper end' of the holder 62 extends A suitable key '4| imbedded in the hub of the impeller and the through the aperture 42 and is threaded internally to receive an externally threaded annular stem 64 on the lower surface of the stuffing box"` 45 and encircling the shaft 31. The threaded connection between the holder 82 and the stem 64 is of ample length so that the holder may be readily adjusted endwise of the stem M for raising or lowering the suction bell 5I to provide the correct clearance between the said suction bell 5I and the impeller vanes 58.

The body portion of the suction bell 5i lies within the extension 26 and is of slightly smaller diameter than the said extension so that it may be rotated readily for effecting the said adjustments or, when required, may pass readily through the entire extension for removal from the top thereof. The upper or inlet end ot said suction bell is, moreover, flared outwardly toward the wall of the extension 2i and adjacent said flared portion and in the wall of the extension 26 are suitable ports 85 for the admission of liquid into the upper end of the impeller chamber.

In practice, with the pump immersed in the liquid intendedto be pumped, liquid enters the impeller chamber through both suction bells and is impelled through the conduit Il to a desired destination. Whenever it is required to disassemble the rotative elements of the pump the motor is first removed from the .base member I2. The plate 4I, together with the stumng box 4I and the suction bell 5|, may thenbe conveniently removed from the-assembly. Ii' required, the impeller may next be withdrawn from the pump through the opening 4l and the extension. After the required repairs have been made lthe parts arev again returned to their correct assembled positions and all the adjustments `are made from the motor i'loor 2| and without disturbing the assembled relationship of the casing parts below the motor base or the connection between the pump casing and the discharge conduit 34.

I claim:

1. In a vertical pump, a base member, an extension depending from the base member and having a port for the admission of liquid thereinto, a pump casing depending from the extension and having an impeller chamber and an opening to communicate the impeller chamber 'with the interior of the extension. a discharge holder for the suction bell and the bearing adjustably connected to the base member for effecting adjustment of the` suction bell axially of the impeller.

2. In a vertical pump, a base member, a tubular extension depending from the .base member and having a port for the admission of fluid thereinto, a pump casing depending from the extension and having an impeller chamber and openings in the opposed sides coaxial with the support member, a discharge conduit for the impeller chamber connected to the casing, a double suction impeller ln the impeller chamber of smaller diameter than the uppermost opening and the extension to enable the impeller to pass therethrough, a vertical shaft for the impeller extending through the extension and the base member, a suction bell in the lowermost opening having a bearing for the shaft, a suction bell in the uppermost opening and being adjustable axially of the impeller chamber, a bearing in the last mentioned suction bell for the shaft, and a tubular holder for the last mentioned suction bell f adjustably connected to the base member.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3048384 *Dec 8, 1959Aug 7, 1962Metal Pumping Services IncPump for molten metal
US3371614 *Apr 18, 1966Mar 5, 1968Angelo J. CrisafulliCentrifugal pump
US3756738 *Oct 22, 1971Sep 4, 1973Clarkson Ind IncCentrifugal pump with differential thermal expansion relief means
US3904306 *Feb 5, 1974Sep 9, 1975Thune Eureka AsTwo-way impeller in a centrifugal pump having vertical drive shaft
US3958895 *Feb 7, 1975May 25, 1976Brisson Leonard LPump with shearing means
US5597289 *Mar 7, 1995Jan 28, 1997Thut; Bruno H.Dynamically balanced pump impeller
US6019576 *Sep 22, 1997Feb 1, 2000Thut; Bruno H.Pumps for pumping molten metal with a stirring action
US6485257Sep 15, 2000Nov 26, 2002Tom Richards, Inc.Top-flow centrifugal fluid pump
US7906068Feb 4, 2004Mar 15, 2011Cooper Paul VSupport post system for molten metal pump
US8075837Jun 26, 2008Dec 13, 2011Cooper Paul VPump with rotating inlet
US8110141Jun 26, 2008Feb 7, 2012Cooper Paul VPump with rotating inlet
US8178037May 13, 2008May 15, 2012Cooper Paul VSystem for releasing gas into molten metal
US8337746Jun 21, 2007Dec 25, 2012Cooper Paul VTransferring molten metal from one structure to another
US8361379Feb 27, 2009Jan 29, 2013Cooper Paul VGas transfer foot
US8366993Aug 9, 2010Feb 5, 2013Cooper Paul VSystem and method for degassing molten metal
US8409495Oct 3, 2011Apr 2, 2013Paul V. CooperRotor with inlet perimeters
US8440135May 13, 2008May 14, 2013Paul V. CooperSystem for releasing gas into molten metal
US8444911Aug 9, 2010May 21, 2013Paul V. CooperShaft and post tensioning device
US8449814Aug 9, 2010May 28, 2013Paul V. CooperSystems and methods for melting scrap metal
US8475708Mar 14, 2011Jul 2, 2013Paul V. CooperSupport post clamps for molten metal pumps
US8501084Mar 14, 2011Aug 6, 2013Paul V. CooperSupport posts for molten metal pumps
US8524146Sep 9, 2010Sep 3, 2013Paul V. CooperRotary degassers and components therefor
US8529828Nov 4, 2008Sep 10, 2013Paul V. CooperMolten metal pump components
US8535603Aug 9, 2010Sep 17, 2013Paul V. CooperRotary degasser and rotor therefor
US8613884May 12, 2011Dec 24, 2013Paul V. CooperLaunder transfer insert and system
US8714914Sep 8, 2010May 6, 2014Paul V. CooperMolten metal pump filter
US8753563Jan 31, 2013Jun 17, 2014Paul V. CooperSystem and method for degassing molten metal
U.S. Classification415/98, 415/131
International ClassificationF04D29/22, F04D7/02, F04D7/00, F04D1/00, F04D29/18
Cooperative ClassificationF04D1/006, F04D7/02, F04D29/2211
European ClassificationF04D29/22B2, F04D7/02, F04D1/00C