EP1529167A1 - Centrifugal pump - Google Patents

Centrifugal pump

Info

Publication number
EP1529167A1
EP1529167A1 EP03793695A EP03793695A EP1529167A1 EP 1529167 A1 EP1529167 A1 EP 1529167A1 EP 03793695 A EP03793695 A EP 03793695A EP 03793695 A EP03793695 A EP 03793695A EP 1529167 A1 EP1529167 A1 EP 1529167A1
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
profile
pump according
shaft
connecting piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03793695A
Other languages
German (de)
French (fr)
Other versions
EP1529167B1 (en
Inventor
Edgar Weidele
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Allweiler GmbH
Original Assignee
Allweiler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Allweiler AG filed Critical Allweiler AG
Publication of EP1529167A1 publication Critical patent/EP1529167A1/en
Application granted granted Critical
Publication of EP1529167B1 publication Critical patent/EP1529167B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the invention relates to a centrifugal pump for conveying a medium with an impeller provided in a spiral housing and the bearing housing associated with the spiral housing for at least one bearing of a pump shaft connected to the impeller, which at the other end passes through another bearing housing and is connected to a drive beyond it.
  • a connecting piece surrounding the pump shaft or a connecting pipe extends between the two bearing bracket housings.
  • Submersible or feed pumps with a vertically arranged pump shaft in a cladding tube are also known.
  • the conveying medium is brought into rotation and, in the case of existing openings in the cladding tube thrown by this by the rotation of the pump shaft.
  • the result is an unintended foaming of the pumped medium and air inclusions caused by the pump movement.
  • At least one pressure relief bore is provided in the wall of the connecting piece or pipe and this is assigned a partial hollow profile covering it on the inside, which runs parallel to the shaft axis and at a radial distance from the pump shaft;
  • the pressure relief bores can also - preferably in the radial direction - be brought to the latter by the adjacent bearing support housing instead of in the wall of the connecting piece.
  • Bearing bracket housing starts out with a hollow profile that is divided parallel to its longitudinal axis, that is to say channel-like, and which at least adjoins the bearing bracket housing
  • an angle profile as a partial hollow profile which is fixed on the inside with its leg edges on both sides of the pressure relief bore / s on the connecting piece and whose profile ridge edge runs at a distance from the pump shaft. Thanks to this covering of the pressure relief bores with the angle profile, the uncontrolled escape of the pumped medium into a surrounding container is prevented, and rotation of the pumped medium in the connecting piece is prevented by the protrusion of the angular edges.
  • the angle profile is preferably fixed on the inside on the connecting piece with its profile ridge edge, that is to say it opens towards the axis; its leg end edges are at a distance from the pump shaft.
  • Gully-like partial hollow profiles - preferably rectangular cross-section - can also be used according to the invention; the channel bottom of this channel profile is advantageously fixed on both sides on the inside of the connecting piece and its channel legs protrude towards the connecting piece.
  • the leg edges of the gutter legs which are preferably axially inclined toward the inside of the gutter base, should also be at a distance from the pump shaft.
  • the above-mentioned radial relief bores are preferably assigned to these axially opening angle profiles or the channel profiles.
  • the angle profiles are attached to the lower and upper relief bores of the submersible pump and hide them. As a result, the pumped medium is deflected and can flow back into that container without foaming.
  • the partial hollow or angular profile covering the pressure relief bore (s) is diametrically opposed to another profile - preferably also an angular profile.
  • at least two further profiles, preferably radial web profiles, protrude from the wall area of the connecting piece opposite the partially hollow or angular profile.
  • the pressure relief bore (s) and their partial hollow or angular profile (s) should also advantageously lie in a radial plane in which the outlet of the volute casing is located.
  • this hollow shaft should rest with its end edge on a central projection of the bearing bracket housing, which is penetrated by the pump shaft; the outer surface of the hollow shaft is adjacent to an interference contour on the end faces of the bearing carrier housing.
  • the assignment of the pump parts according to the invention is selected so that the radial distance of the pump shaft from the hollow shaft corresponds approximately to its radial distance from the profile ridge edge (s).
  • a longitudinal tube - preferably directed parallel to the shaft axis - should run on the outside of the connecting piece, which connects the transverse channels in both bearing bracket housings and thus ensures uniform ventilation.
  • the partial hollow profile according to the invention consists of several components which cover the pressure relief bore (s).
  • flat profiles should protrude axially from the inner surface of the connecting piece; the hollow shaft, which surrounds the base of the pump shaft, is connected to the inner surface of the connecting piece by flat profiles.
  • Fig. 2, 5 each an enlarged detail from Fig. 1 and Fig. 4;
  • Fig. 3 the enlarged cross section through Figures 1, 2 along the line III-III;
  • Fig. 6 the enlarged cross section through Figure 5 along the line VI-VI;
  • FIGS. 7, 8 a partial longitudinal section, reduced in comparison with FIGS. 1, 4, through a centrifugal pump for the embodiment according to FIGS. 7, 8;
  • a centrifugal pump 10 used as a submersible pump has, according to FIG. 1, a bearing support housing 20 on a spiral housing 14 equipped with connecting flanges 12, 12 a , with the interposition of seals which are not identified.
  • a pump shaft 24 of a diameter d an impeller 28 In this sits on the front stepped end 24 a a pump shaft 24 of a diameter d an impeller 28 and is held by a nut 26.
  • This impeller 28 rotates in the housing space 15 of the spiral housing 14 screwed to the bearing support housing 20, to which a suction space 16 connects axially; the inlet of which is designated 17, the outlet of the housing space 15 is 18.
  • the inlet 17 is preceded by a sieve extension 19, and near the impeller 28 there is a front slide bearing 30 in the bearing support housing 20.
  • a cylindrical central recess 34 receiving the pump shaft 24 - with an inner groove 33 for a seal, not shown - is provided, which in the interior 35 of a connecting piece or pipe 36 of diameter di and length a empties.
  • the connecting piece 36 is fixed here at one end in a ring 22 screwed to the end face of the bearing support housing 20.
  • the other end of the connecting piece 36 which is provided with pressure relief bores 38 at the center distance c from its end edges 37, rests in a lower ring 22, which is placed in front of a second bearing support housing 20 a for a second shaft bearing designed as a ball bearing 31.
  • a radial rear plate 40 is screwed onto this - in FIG. 1 upper - bearing support housing 20 a, which is penetrated by the shaft end 25 - connected to a drive 42.
  • the latter is connected to that drive 42, not shown, by a coupling device 46 provided in a coupling housing 44.
  • the upper bearing support housing 20 a screwed to the clutch housing 44 is seated in a radially arranged support plate of thickness f indicated at 48.
  • the longitudinal axis B of a discharge tube 50 runs through the support plate 48, over which it ends with a flange 51, parallel to the shaft axis A and at a radial distance i from it.
  • the discharge pipe 50 is connected, with the interposition of a closing member 52, to a manifold 54 which is attached to the connecting flange 12 a of the spiral housing 14.
  • a control line 56 of a control member 58, which is supported in the carrier plate 48, can be seen parallel to that longitudinal axis B.
  • the angular profile 60 of the pressure relief bore 38 is opposite radial web profiles 63.
  • the ridge edge 62 of the angle profile 60 which is fixed with its leg edges 61 on the inner surface of the connecting pipe or connecting piece 36, defines a radial plane Q, which also penetrates the connecting flange 12 a of the outlet 18 diametrically.
  • the bearing near the impeller is also designed as a ball bearing 31, and the connecting piece 36 of the diameter di of approximately 135 mm and the length a of 495 mm and the angle profiles 60 are at one end in an annular groove 64 of the bearing bracket housing 20 set.
  • the inside diameter e measures 72 mm with a groove width b of 32 mm.
  • the annular groove 64 is the mentioned inner groove 33 radially adjacent for a seal, not shown.
  • This ring groove 64 is followed by the aforementioned ring 20 with an outer diameter egg of 195 mm, which is surrounded on the outside by an edge bead 23 of the bearing support housing 20.
  • the other end of the connecting piece 36 is also mounted in an annular groove 66 a of a second bearing support housing 20 a for a second ball bearing 31.
  • the thickness f of the support plate 48 likewise radially assigned to the bearing support housing 20 a , measures 25 mm.
  • the distance ai to the center plane E of the impeller 28 is 600 mm.
  • a longitudinal tube 68 - at a radial distance i x of 85 mm from its tube axis Bi to the shaft axis A - can be seen in FIG. 4, which ends at both ends in closable transverse channels 69, 69 a of the bearing bracket housing 20, 20 a .
  • the transverse channels 69, 69 a are connected to the housing space 15 of the spiral housing 14 for the impeller 28 or to the storage space 41 adjacent to the rear plate 40 for the ball bearing 31 close to the drive.
  • the end edge 72 of the hollow shaft 70 can be seen attached to the end face of the central projection (32) of the bearing bracket housing 20, 20 a .
  • the pressure relief bores 38 have angular profiles 60 in front of them and their leg edges 61 on the wall of the connection welded socket 36; their length n measures 200 mm and their axial distance ni about 95 mm.
  • this connecting piece 36 - as can be seen in particular from FIGS. 5, 6 - there is coaxial with the pump shaft 24 a hollow shaft 70 of the outer diameter t of 70 mm, which associates a disturbing contour 21 of the bearing housing 20, 20 a which closely surrounds it is.
  • 6 also shows that rectangular cross section of the two pairs of angle profiles 60; an angular profile 60 of the pair completely covers the associated pressure relief bore 38; this angle profile 60 provided in the zenith of the connecting piece 36 is diametrically opposite a lower angle profile 60 of the pairing on the other side of the shaft axis A at a radial distance q of approximately 80 mm.
  • flat bars can also be provided instead of the angle profiles 60, correspondingly provided in cross section.
  • the angle profiles 60 attached to the pressure relief bores 38 cover these, as a result of which - as said - the conveyed medium is deflected and can flow back into the container without foam formation. Otherwise, the position of the pressure relief bore 38 is offset by 90 ° to the vent bore 68 of the centrifugal pump 10 e . Thanks to this covering of the pressure relief bores 38, the uncontrolled escape of the pumped medium into a surrounding container is completely prevented. A rotation of the delivery medium in the connecting piece 36 is prevented by the course of the respective profile ridge edge 62 close to that interference contour 21.
  • FIG. 7, 8 show two cross sections corresponding to the illustration in FIG. 6 of other configurations, for which FIG. 9 offers a reduced partial longitudinal section of the centrifugal pump 10 n .
  • the formed from profiled steel two angle profiles 60 a are with their profile ridge edge 62 on the
  • the inner surface of the connecting tube 36 is fixed on the cross-sectional central axis M, and its interior 59 opens towards the interference contour 21 of the bearing support housing 20, to which the leg edges 62 a run at a distance.
  • the diametrical distance between the two leg edges 62 a is designated by qi.
  • the pressure relief bores 38 are missing in this sketch as well as in the example in FIG. 8; they are replaced here by radial relief bores 67, which start in the bearing bracket housing 20 below the angle profiles 60 a and go from the base of the connecting piece 36 to the outside.
  • Another pressure relief bore is identified by 69.
  • angular profile 60 a has a channel profile 74, which also consists of sectional steel, with a channel bottom 75 of length g rectangular, which is fixed to the inner surface of the connecting tube 36 with its longitudinal contours 76 and forms a cavity 77 with it, ie parallel to the central axis M, protruding gutter legs 78 of length h; the leg edges 79 are at a distance from the interference contour 21 of the bearing support housing 20 and at a distance qi from one another.
  • the leg edges 61 are inclined inwards towards the central axis M.
  • the radial relief bores 67 described above are also provided for this purpose.
  • the hollow shaft 70 of length z of 150 mm assigned to the pressure relief bore 38 for protection is connected to the inner surface of the connecting piece 36 by - preferably radially placed - flat profiles or flat iron 80, the lower edges 82 of which of the foot or lower end edge 72 of the hollow shaft 70 are approximately aligned and thus rest on the collar-like projection 32 of the bearing carrier housing 20.
  • the ridge edge 71 of the hollow shaft 70 projects upward the flat iron 80 slightly.
  • a screen attachment 19 is connected to the connecting flange 12 of the spiral housing 14 by screws 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The centrifugal pump (10), and especially a submerged pump, has a running wheel (28) within a spiral housing (14). The pump housing has bearing carrier housings (20) for at least one bearing (30,31) for the pump shaft (24) with the wheel, which passes through at least one additional bearing carrier housing (20a) at the other end with the coupling to a drive (42). A connecting tube (36) is around the pump shaft between the bearing housings. At least one pressure relief drilling (38) is in the wall of the connecting tube, shrouded at the interior by an angled hollow profile (60), parallel to the shaft axis (A) and at a radial gap from the pump shaft.

Description

KREISELPUMPE ROTARY PUMP
Die Erfindung betrifft eine Kreiselpumpe zum Fördern eines Fördermediums mit in einem Spiralgehäuse vorgesehenem Laufrad sowie dem Spiralgehäuse zugeordnetem Lagertragergehause für zumindest ein Lager einer an das Laufrad angeschlossenen Pumpenwelle, die andernends ein weiteres Lagertragergehause durchsetzt und jenseits dessen an einen Antrieb angeschlossen ist; zwischen den beiden Lagerträgergehäusen erstreckt sich ein die Pumpenwelle umgebender Verbindungsstutzen bzw. ein Verbindungsrohr.The invention relates to a centrifugal pump for conveying a medium with an impeller provided in a spiral housing and the bearing housing associated with the spiral housing for at least one bearing of a pump shaft connected to the impeller, which at the other end passes through another bearing housing and is connected to a drive beyond it. Between the two bearing bracket housings, a connecting piece surrounding the pump shaft or a connecting pipe extends.
Eine derartige Pumpe ist der US 3,731,941 A zu entnehmen mit horizontaler Pumpenwelle, die zwei Kugellager durchsetzt, von denen jedes in einem Lagergehäuse sitzt. Beide Lagergehäuse befinden sich radial in einem seinerseits an einen Ständer der Pumpe angeschraubten Rohrstutzen.Such a pump can be found in US Pat. No. 3,731,941 A with a horizontal pump shaft which passes through two ball bearings, each of which is seated in a bearing housing. Both bearing housings are located radially in a pipe socket screwed to a stand of the pump.
Bekannt sind auch Tauch- oder Förderpumpen mit vertikal angeordneter Pumpenwelle in einem Hüllrohr. In diesem wird ' durch die Rotation der Pumpenwelle das Fördermedium in Drehbewegung gebracht und im Falle vorhandener Öffnungen im Hüllrohr durch diese geschleudert. Ein ungewolltes Aufschäumen des Fördermediums und Lufteinschlüsse durch die Pumpbewegung in diesem sind die Folge.Submersible or feed pumps with a vertically arranged pump shaft in a cladding tube are also known. In this' the conveying medium is brought into rotation and, in the case of existing openings in the cladding tube thrown by this by the rotation of the pump shaft. The result is an unintended foaming of the pumped medium and air inclusions caused by the pump movement.
In Kenntnis dieses Standes der Technik hat sich der Erfinder das Ziel gesetzt, die Laufeigenschaften solcher Pumpen zu verbessern und die geschilderten Mängel zu beseitigen. Zur Lösung dieser Aufgabe führt die Lehre nach dem unabhängigen Schutzanspruch; die Unteransprüch'e geben günstige Weiterbildungen an. Zudem fallen in den Rahmen der Erfindung alle Kombinationen aus zumindest zwei der in der Beschreibung, der Zeichnung und/oder den Ansprüchen offenbarten Merkmale.Knowing this prior art, the inventor has set itself the goal of improving the running properties of such pumps and of eliminating the deficiencies described. Teaching according to the independent protection claim leads to the solution of this task; the subclaims indicate favorable further training. In addition, all combinations of at least two of the features disclosed in the description, the drawing and / or the claims fall within the scope of the invention.
Erfindungsgemäß ist in der Wandung des Verbindungsstutzens oder -rohres wenigstens eine Druckentlastungsbohrung vorgesehen und dieser innenseitig ein sie überdeckendes Teilhohlprofil zugeordnet, welches parallel zur Wellenachse und in radialem Abstand zur Pumpenwelle verläuft; die Druckentlastungsbohrungen können erfindungsgemäß auch -- statt in der Wandung des Verbindungsstutzens — an letzteren durch das benachbarte Lagertragergehause — bevorzugt radial — herangeführt sein.According to the invention, at least one pressure relief bore is provided in the wall of the connecting piece or pipe and this is assigned a partial hollow profile covering it on the inside, which runs parallel to the shaft axis and at a radial distance from the pump shaft; According to the invention, the pressure relief bores can also - preferably in the radial direction - be brought to the latter by the adjacent bearing support housing instead of in the wall of the connecting piece.
Als günstig hat es sich erwiesen, dass von jedem der beidenIt has proven to be cheap that each of the two
Lagertragergehause ein — parallel zu seiner Längsachse geteiltes, also rinnenartiges — Hohlprofil ausgeht, welches zumindest eine dem Lagertragergehause benachbarteBearing bracket housing starts out with a hollow profile that is divided parallel to its longitudinal axis, that is to say channel-like, and which at least adjoins the bearing bracket housing
Druckentlastungsbohrung übergreift. Dazu hat es sich als günstig erwiesen, dass beide Teilhohlprofile miteinander fluchten und in Abstand zueinander enden.Pressure relief hole overlaps. For this purpose, it has proven to be advantageous for the two partial hollow profiles to be flush with one another and to end at a distance from one another.
Im Rahmen der Erfindung liegt ein Winkelprofil als Teilhohlprofil, das mit seinen Schenkelkanten beidseits der Druckentlastungsbohrung/en am Verbindungsstutzen innenseitig festgelegt ist und dessen Profilfirstkante in Abstand zur Pumpenwelle verläuft. Dank dieser Abdeckung der Druckentlastungsbohrungen mit dem Winkelprofil wird das un- kontrolierte Austreten des Fördermediums in einen umgebenden Behälter verhindert, und ein Rotieren des Fördermediums im Verbindungsstück wird durch das Vorstehen der Winkelkanten unterbunden. Bei Ausgestaltungen mit das Lagergehäuse durchsetzenden radialen Druckentlastungsbohrungen wird das Winkelprofil bevorzugt mit seiner Profilfirstkante innenseitig am Verbindungsstutzen festgelegt, öffnet sich also achswärts; seine Schenkelendkanten verlaufen in Abstand zur Pumpenwelle.Within the scope of the invention there is an angle profile as a partial hollow profile which is fixed on the inside with its leg edges on both sides of the pressure relief bore / s on the connecting piece and whose profile ridge edge runs at a distance from the pump shaft. Thanks to this covering of the pressure relief bores with the angle profile, the uncontrolled escape of the pumped medium into a surrounding container is prevented, and rotation of the pumped medium in the connecting piece is prevented by the protrusion of the angular edges. In the case of configurations with radial pressure relief bores penetrating the bearing housing, the angle profile is preferably fixed on the inside on the connecting piece with its profile ridge edge, that is to say it opens towards the axis; its leg end edges are at a distance from the pump shaft.
Auch können erfindungsgemäß rinnenartige Teilhohlprofile -- bevorzugt rechteckigen Querschnitts — eingesetzt werden; der Rinnenboden dieses Rinnenprofils ist vorteilhafterweise beidseits innenseitig am Verbindungsstutzen festgelegt und seine Rinnenschenkel ragen zum Verbindungsstutzen hin ab. Im übrigen sollen auch hier die -- querschnittlich bevorzugt achswärts zum Rinnenboden hin nach innen geneigten — Schenkelkanten der Rinnenschenkel in Abstand zur Pumpenwelle stehen.Gully-like partial hollow profiles - preferably rectangular cross-section - can also be used according to the invention; the channel bottom of this channel profile is advantageously fixed on both sides on the inside of the connecting piece and its channel legs protrude towards the connecting piece. For the rest, the leg edges of the gutter legs, which are preferably axially inclined toward the inside of the gutter base, should also be at a distance from the pump shaft.
Diesen sich achswärts öffnenden Winkelprofilen bzw. den Rinnenprofilen sind die oben erwähnten radialen Entlastungsbohrungen bevorzugt zugeordnet.The above-mentioned radial relief bores are preferably assigned to these axially opening angle profiles or the channel profiles.
Die Winkelprofile sind erfindungsgemäß an unteren und oberen Entlastungsbohrungen der Tauchpumpe angebracht und verdecken diese. Dadurch wird das Fördermedium umgelenkt und kann ohne Schaumbildung in jenen Behälter zurückfließen.According to the invention, the angle profiles are attached to the lower and upper relief bores of the submersible pump and hide them. As a result, the pumped medium is deflected and can flow back into that container without foaming.
Nach einem weiteren Merkmal der Erfindung liegt dem die Druckentlastungsbohrung/en überdeckenden Teilhohl- oder Winkelprofil diametral ein weiteres Profil — bevorzugt ebenfalls ein Winkelprofil — gegenüber. Allerdings ist es auch denkbar, dass von dem dem Teilhohl- oder Winkelprofil gegenüberstehenden Wandungsbereich des Verbindungsstutzens zumindest zwei weitere Profile in seitlichem Abstand zueinander abragen, bevorzugt radiale Stegprofile. Zur Festlegung des Verbindungsstutzens hat es sich als günstig erwiesen, diesen endwärts — mit dem einen Ende der/des innenseitig in ihm festgelegten Profile/s -- in einer Ringnut des Lagerträgergehäuses anzuordnen.According to a further feature of the invention, the partial hollow or angular profile covering the pressure relief bore (s) is diametrically opposed to another profile - preferably also an angular profile. However, it is also conceivable that at least two further profiles, preferably radial web profiles, protrude from the wall area of the connecting piece opposite the partially hollow or angular profile. In order to fix the connecting piece, it has proven to be advantageous to arrange it in an annular groove of the bearing bracket housing at the end - with one end of the profile (s) fixed on the inside.
Die Druckentlastungsbohrung/en und deren Teilhohl- oder Winkelprofil/e sollen zudem vorteilhafterweise in einer Radialebene liegen, in welcher sich der Auslass des Spiralgehäuses befindet.The pressure relief bore (s) and their partial hollow or angular profile (s) should also advantageously lie in a radial plane in which the outlet of the volute casing is located.
Nach einem weiteren Merkmal der Erfindung ist. die Pumpenwelle von einer Hohlwelle umfangen und diese in radialem Abstand zu dem/den Profile/n angeordnet; diese Hohlwelle soll mit ihrer Endkante einer zentralen Anformung des Lagerträgergehäuses anliegen, welche von der Pumpenwelle durchsetzt ist; der Außenfläche der Hohlwelle ist im übrigen an den Stirnflächen der Lagertragergehause eine Störkontur benachbart.According to another feature of the invention. surround the pump shaft by a hollow shaft and arrange it at a radial distance from the profile (s); this hollow shaft should rest with its end edge on a central projection of the bearing bracket housing, which is penetrated by the pump shaft; the outer surface of the hollow shaft is adjacent to an interference contour on the end faces of the bearing carrier housing.
Die erfindungsgemäße Zuordnung der Pumpenteile ist so gewählt, dass der radiale Abstand der Pumpenwelle von der Hohlwelle etwa deren radialem Abstand von der/den Profilfirstkante/n entspricht. Zudem soll an der Außenseite des Verbindungsstutzens ein Längsrohr — bevorzugt parallel zur Wellenachse gerichtet — verlaufen, das Querkanäle in beiden Lagerträgergehäusen miteinander verbindet und so für eine einheitliche Entlüftung sorgt.The assignment of the pump parts according to the invention is selected so that the radial distance of the pump shaft from the hollow shaft corresponds approximately to its radial distance from the profile ridge edge (s). In addition, a longitudinal tube - preferably directed parallel to the shaft axis - should run on the outside of the connecting piece, which connects the transverse channels in both bearing bracket housings and thus ensures uniform ventilation.
Das erfindungsgemäße Teilhohlprofil besteht aus mehreren Komponenten, welche die Druckentlastungsbohrung/en abdecken. Zudem sollen von der Innenfläche des Verbindungsstutzens achswärts Flachprofile abragen; die — den Fuß der Pumpenwelle umfangende -- Hohlwelle wird durch Flachprofile mit der Innenfläche des Verbindungsstutzens verbunden. Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt inThe partial hollow profile according to the invention consists of several components which cover the pressure relief bore (s). In addition, flat profiles should protrude axially from the inner surface of the connecting piece; the hollow shaft, which surrounds the base of the pump shaft, is connected to the inner surface of the connecting piece by flat profiles. Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows in
Fig. 1, 4: jeweils einen Längsschnitt durch eine Ausgestaltung einer Kreiselpumpe;1, 4: each a longitudinal section through an embodiment of a centrifugal pump;
Fig. 2, 5: jeweils ein vergrößertes Detail aus Fig. 1 bzw. Fig. 4;Fig. 2, 5: each an enlarged detail from Fig. 1 and Fig. 4;
Fig. 3: den vergrößerten Querschnitt durch Fig. 1, 2 nach deren Linie III-III;Fig. 3: the enlarged cross section through Figures 1, 2 along the line III-III;
Fig. 6: den vergrößerten Querschnitt durch Fig. 5 nach deren Linie VI-VI;Fig. 6: the enlarged cross section through Figure 5 along the line VI-VI;
Fig. 7, 8: zwei weitere Ausführungsbeispiele in einer der Fig. 6 entsprechenden QuerschnittsdarStellung;7, 8: two further exemplary embodiments in a cross-sectional representation corresponding to FIG. 6;
Fig. 9: einen gegenüber Fig. 1, 4 verkleinerten Teillängsschnitt durch eine Kreiselpumpe zur Ausgestaltung nach Fig. 7, 8;9: a partial longitudinal section, reduced in comparison with FIGS. 1, 4, through a centrifugal pump for the embodiment according to FIGS. 7, 8;
Fig. 10: einen vergrößerten Teillängsschnitt durch eine weitere Ausgestaltung der Kreiselpumpe .10: an enlarged partial longitudinal section through a further embodiment of the centrifugal pump.
Eine als Tauchpumpe eingesetzte Kreiselpumpe 10 weist gemäß Fig. 1 an einem mit Anschlussflanschen 12, 12a ausgestatteten Spiralgehäuse 14 — unter Zwischenschaltung von nicht kenntlich gemachten Dichtungen — ein Lagertragergehause 20 auf. In diesem sitzt auf dem vorderen gestuften Ende 24a einer Pumpenwelle 24 eines Durchmessers d ein Laufrad 28 und wird von einer Mutter 26 gehalten. Dieses Laufrad 28 dreht sich im Gehäuseraum 15 des mit dem Lagertragergehause 20 verschraubten Spiralgehäuses 14, an den axial ein Saugraum 16 anschließt; dessen Einlass ist mit 17 bezeichnet, der Auslass des Gehäuseraumes 15 mit 18. Dem Einlass 17 ist ein Siebansatz 19 vorgesetzt, und nahe dem Laufrad 28 befindet sich im Lagertragergehause 20 ein vorderes Gleitlager 30.A centrifugal pump 10 used as a submersible pump has, according to FIG. 1, a bearing support housing 20 on a spiral housing 14 equipped with connecting flanges 12, 12 a , with the interposition of seals which are not identified. In this sits on the front stepped end 24 a a pump shaft 24 of a diameter d an impeller 28 and is held by a nut 26. This impeller 28 rotates in the housing space 15 of the spiral housing 14 screwed to the bearing support housing 20, to which a suction space 16 connects axially; the inlet of which is designated 17, the outlet of the housing space 15 is 18. The inlet 17 is preceded by a sieve extension 19, and near the impeller 28 there is a front slide bearing 30 in the bearing support housing 20.
In einer ringartigen Anformung 32 des Lagerträgergehäuses 20 ist eine die Pumpenwelle 24 aufnehmende zylindrische Zentralausnehmung 34 -- mit einer Innennut 33 für eine nicht dargestellte Dichtung -- vorgesehen, welche in den Innenraum 35 eines Verbindungsstutzens oder -rohres 36 des Durchmessers di sowie der Länge a mündet. Der Verbindungsstutzen 36 ist hier einends in einem an der Stirnfläche des Lagerträgergehäuses 20 angeschraubten Ring 22 festgelegt.In a ring-shaped formation 32 of the bearing support housing 20, a cylindrical central recess 34 receiving the pump shaft 24 - with an inner groove 33 for a seal, not shown - is provided, which in the interior 35 of a connecting piece or pipe 36 of diameter di and length a empties. The connecting piece 36 is fixed here at one end in a ring 22 screwed to the end face of the bearing support housing 20.
Das andere Ende des Verbindungsstutzens 36, der in Mittenabstand c zu seinen Endkanten 37 mit Druckentlastungsbohrungen 38 ausgestattet ist, ruht in einem unteren Ring 22, der einem zweiten Lagertragergehause 20a für ein zweites - als Kugellager 31 ausgebildetes — Wellenlager vorgesetzt ist. An dieses -- in Fig. 1 obere -- Lagertragergehause 20a ist eine radiale Heckplatte 40 angeschraubt, die von dem — an einen Antrieb 42 angeschlossenen — Wellenende 25 durchsetzt ist. Letzteres wird durch eine in einem Kupplungsgehäuse 44 vorgesehene Kupplungseinrichtung 46 mit jenem nicht weiter dargestellten Antrieb 42 verbunden. Das mit dem Kupplungsgehäuse 44 verschraubte obere Lagertragergehause 20a sitzt in einer bei 48 angedeuteten, radial angeordneten Trägerplatte der Dicke f. Parallel zur Wellenachse A sowie in radialem Abstand i zu ihr verläuft die Längsachse B eines Austragsrohres 50, das jene Trägerplatte 48 durchsetzt, über der es mit einem Flansch 51 endet. Andernends ist das Austragsrohr 50 unter Zwischenschaltung eines Schließorgans 52 an einen Krümmer 54 angeschlossen, der an den Anschlussflansch 12a des Spiralgehäuses 14 angefügt ist. Parallel zu jener Längsachse B ist eine Steuerleitung 56 eines Steuerorgans 58 zu erkennen, das in der Trägerplatte 48 lagert.The other end of the connecting piece 36, which is provided with pressure relief bores 38 at the center distance c from its end edges 37, rests in a lower ring 22, which is placed in front of a second bearing support housing 20 a for a second shaft bearing designed as a ball bearing 31. A radial rear plate 40 is screwed onto this - in FIG. 1 upper - bearing support housing 20 a, which is penetrated by the shaft end 25 - connected to a drive 42. The latter is connected to that drive 42, not shown, by a coupling device 46 provided in a coupling housing 44. The upper bearing support housing 20 a screwed to the clutch housing 44 is seated in a radially arranged support plate of thickness f indicated at 48. The longitudinal axis B of a discharge tube 50 runs through the support plate 48, over which it ends with a flange 51, parallel to the shaft axis A and at a radial distance i from it. On the other hand, the discharge pipe 50 is connected, with the interposition of a closing member 52, to a manifold 54 which is attached to the connecting flange 12 a of the spiral housing 14. A control line 56 of a control member 58, which is supported in the carrier plate 48, can be seen parallel to that longitudinal axis B.
Durch die Rotation der Pumpenwelle 24 wird Fördermedium der Tauchpumpe 10 in dem Verbindungsstutzen 36 in Rotation versetzt sowie durch die beschriebenen Druckentlastungsbohrungen 38 geschleudert. Da für diesen Pumpeneinsatz ein ungewolltes Aufschäumen des Fördermediums sowie Lufteinschlüsse durch die Pumpenbewegung nachteilig sind, wird ein unkontrolliertes Austreten von Fördermedium durch eine Abdeckung der Druckentlastungsbohrungen 38 hintangehalten. Dazu befindet sich innerhalb des Verbindungsstutzens 36 — wie vor allem Fig. 3 erkennen läßt — ein der Druckentlastungsbohrung 38 vorgesetztes Teilhohlprofil in Form eines Winkelprofils 60 der Länge n, dessen i.w. rechtwinkeliger Querschnitt symmetrisch zur Mittelachse M der Druckentlastungsbohrung 38 verläuft sowie in radialem Abstand zur Projektion der Anformung 32.The rotation of the pump shaft 24 causes the delivery medium of the submersible pump 10 to rotate in the connecting piece 36 and also throws through the described pressure relief bores 38. Since an undesired foaming of the pumped medium and air pockets due to the pump movement are disadvantageous for this pump use, an uncontrolled escape of the pumped medium is prevented by a cover of the pressure relief holes 38. For this purpose, a partial hollow profile in the form of an angular profile 60 of length n, which i.w. rectangular cross section runs symmetrically to the central axis M of the pressure relief bore 38 and at a radial distance from the projection of the projection 32.
In Fig. 2, 3 liegen dem Winkelprofil 60 der Druckentlastungsbohrung 38 radiale Stegprofile 63 gegenüber. Die Firstkante 62 des mit seinen Schenkelkanten 61 an der Innenfläche des Verbindungsrohres oder -Stutzens 36 festliegenden Winkelprofils 60 bestimmt eine Radialebene Q, welche auch den Anschlussflansch 12a des Auslasses 18 diametral durchsetzt. Beim Ausführungsbeispiel einer Kreiselpumpe 10e der Fig. 4 bis 6 ist auch das laufradnahe Lager als Kugellager 31 ausgebildet, und der Verbindungsstutzen 36 des Durchmessers di von etwa 135 mm sowie der Länge a von 495 mm sowie die Winkelprofile 60 sind einends in einer Ringnut 64 des Lagerträgergehäuses 20 festgelegt. Deren Innendurchmesser e misst 72 mm bei einer Nutbreite b von 32 mm. Der Ringnut 64 ist die erwähnte Innennut 33 für eine nicht gezeigte Dichtung radial benachbart. An diese Ringnut 64 schließt der erwähnte Ring 20 eines Außendurchmessers ei von 195 mm an, der nach außen hin von einem Randwulst 23 des Lagerträgergehäuses 20 umfangen ist.2, 3, the angular profile 60 of the pressure relief bore 38 is opposite radial web profiles 63. The ridge edge 62 of the angle profile 60, which is fixed with its leg edges 61 on the inner surface of the connecting pipe or connecting piece 36, defines a radial plane Q, which also penetrates the connecting flange 12 a of the outlet 18 diametrically. In the exemplary embodiment of a centrifugal pump 10 e of FIGS. 4 to 6, the bearing near the impeller is also designed as a ball bearing 31, and the connecting piece 36 of the diameter di of approximately 135 mm and the length a of 495 mm and the angle profiles 60 are at one end in an annular groove 64 of the bearing bracket housing 20 set. The inside diameter e measures 72 mm with a groove width b of 32 mm. The annular groove 64 is the mentioned inner groove 33 radially adjacent for a seal, not shown. This ring groove 64 is followed by the aforementioned ring 20 with an outer diameter egg of 195 mm, which is surrounded on the outside by an edge bead 23 of the bearing support housing 20.
Auch das andere Ende des Verbindungsstutzens 36 lagert in einer Ringnut 66a eines zweiten Lagerträgergehäuses 20a für ein zweites Kugellager 31. Die Dicke f der hier ebenfalls radial dem Lagertragergehause 20a zugeordneten Trägerplatte 48 misst 25 mm. Deren Abstand ai zur Mittelebene E des Laufrades 28 beträgt 600 mm. An einer Seite des Verbindungsstutzens 36 ist in Fig. 4 ein Längsrohr 68 -- in Radialabstand ix von 85 mm seiner Rohrachse Bi zur Wellenachse A — zu erkennen, das beidends in verschließbare Querkanäle 69, 69a der Lagertragergehause 20, 20a mündet. Die Querkanäle 69, 69a sind mit dem Gehäuseraum 15 des Spiralgehäuses 14 für das Laufrad 28 bzw. mit dem an die Heckplatte 40 grenzenden Lagerraum 41 für das antriebsnahe Kugellager 31 verbunden.The other end of the connecting piece 36 is also mounted in an annular groove 66 a of a second bearing support housing 20 a for a second ball bearing 31. The thickness f of the support plate 48, likewise radially assigned to the bearing support housing 20 a , measures 25 mm. The distance ai to the center plane E of the impeller 28 is 600 mm. On one side of the connecting piece 36, a longitudinal tube 68 - at a radial distance i x of 85 mm from its tube axis Bi to the shaft axis A - can be seen in FIG. 4, which ends at both ends in closable transverse channels 69, 69 a of the bearing bracket housing 20, 20 a . The transverse channels 69, 69 a are connected to the housing space 15 of the spiral housing 14 for the impeller 28 or to the storage space 41 adjacent to the rear plate 40 for the ball bearing 31 close to the drive.
Die Endkante 72 der Hohlwelle 70 ist erkennbar der Stirnfläche der zentrischen Anformung (32) des Lagerträgergehäuses 20, 20a angefügt.The end edge 72 of the hollow shaft 70 can be seen attached to the end face of the central projection (32) of the bearing bracket housing 20, 20 a .
Beidends des Verbindungsstutzens 36 sind in diesem den Druckentlastungsbohrungen 38 Winkelprofile 60 vorgesetzt und mit ihren Schenkelkanten 61 an der Wandung des Verbin- dungsstutzens 36 verschweißt; deren Länge n misst 200 mm und deren axialer Abstand ni voneinander etwa 95 mm.At both ends of the connecting piece 36, the pressure relief bores 38 have angular profiles 60 in front of them and their leg edges 61 on the wall of the connection welded socket 36; their length n measures 200 mm and their axial distance ni about 95 mm.
Zudem befindet sich in diesem Verbindungsstutzen 36 -- wie vor allem Fig. 5, 6 zu entnehmen -- koaxial zur Pumpenwelle 24 eine Hohlwelle 70 des äußeren Durchmessers t von 70 mm, der eine sie eng umgebende Störkontur 21 des Lagergehäuses 20, 20a zugeordnet ist. In Fig. 6 wird auch jener rechtwinkelige Querschnitt der beiden Paare von Winkelprofilen 60 deutlich; ein Winkelprofil 60 der Paarung über deckt die zugeordnete Druckentlastungsbohrung 38 völlig; diesem im Zenit des Verbindungsstutzens 36 vorgesehenen Winkelprofil 60 liegt auf der anderen Seite der Wellenachse A in Radialabstand q von etwa 80 mm jeweils diametral ein unteres Winkelprofil 60 der Paarung gegenüber. Bei anderen Ausführungen können statt den Winkelprofilen 60 auch — querschnittlich entsprechend gestellte -- Flacheisen vorgesehen sein.In addition, in this connecting piece 36 - as can be seen in particular from FIGS. 5, 6 - there is coaxial with the pump shaft 24 a hollow shaft 70 of the outer diameter t of 70 mm, which associates a disturbing contour 21 of the bearing housing 20, 20 a which closely surrounds it is. 6 also shows that rectangular cross section of the two pairs of angle profiles 60; an angular profile 60 of the pair completely covers the associated pressure relief bore 38; this angle profile 60 provided in the zenith of the connecting piece 36 is diametrically opposite a lower angle profile 60 of the pairing on the other side of the shaft axis A at a radial distance q of approximately 80 mm. In other designs, flat bars can also be provided instead of the angle profiles 60, correspondingly provided in cross section.
Die an den Druckentlastungsbohrungen 38 angebrachten Winkelprofile 60 decken diese ab, wodurch — wie gesagt -- das Fördermedium umgelenkt wird und ohne Schaumbildung in den Behälter zurückfließen kann. Im übrigen ist die Lage der Druckentlastungsbohrung 38 um 90° versetzt zur Entlüftungsbohrung 68 der Kreiselpumpe 10e. Dank dieser Abdeckung der Druckentlastungsbohrungen 38 wird das unkontrollierte Austreten des Fördermediums in einen umgebenden Behälter gänzlich verhindert. Ein Rotieren des Fördermediums im Verbindungsstutzen 36 wird durch den jener Störkontur 21 nahen Verlauf der jeweiligen Profilfirstkante 62 unterbunden.The angle profiles 60 attached to the pressure relief bores 38 cover these, as a result of which - as said - the conveyed medium is deflected and can flow back into the container without foam formation. Otherwise, the position of the pressure relief bore 38 is offset by 90 ° to the vent bore 68 of the centrifugal pump 10 e . Thanks to this covering of the pressure relief bores 38, the uncontrolled escape of the pumped medium into a surrounding container is completely prevented. A rotation of the delivery medium in the connecting piece 36 is prevented by the course of the respective profile ridge edge 62 close to that interference contour 21.
Die Fig. 7, 8 zeigen zwei der Darstellung in Fig. 6 entsprechende Querschnitte anderer Ausgestaltungen, zu denen Fig. 9 einen verkleinerten Teillängsschnitt der Kreiselpumpe 10n anbietet. Die aus Profilstahl geformten beiden Winkelprofile 60a sind mit ihrer Profilfirstkante 62 an der Innenfläche des Verbindungsrohres 36 auf der Querschnittsmittelachse M festgelegt, und ihr Innenraum 59 öffnet sich zur Störkontur 21 des Lagerträgergehäuses 20 hin, zu welcher die Schenkelkanten 62a in Abstand verlaufen. Der diametrale Abstand beider Schenkelkanten 62a ist mit qi bezeichnet. Die Druckentlastungsbohrungen 38 fehlen sowohl in dieser Skizze als auch beim Beispiel der Fig. 8; sie sind hier ersetzt durch radiale Entlastungsbohrungen 67, die im Lagertragergehause 20 unterhalb der Winkelprofile 60a ansetzen und vom Fuße des Verbindungsstutzens 36 nach außen gehen. Mit 69 ist eine andere Druckentlastungsbohrung gekennzeichnet .7, 8 show two cross sections corresponding to the illustration in FIG. 6 of other configurations, for which FIG. 9 offers a reduced partial longitudinal section of the centrifugal pump 10 n . The formed from profiled steel two angle profiles 60 a are with their profile ridge edge 62 on the The inner surface of the connecting tube 36 is fixed on the cross-sectional central axis M, and its interior 59 opens towards the interference contour 21 of the bearing support housing 20, to which the leg edges 62 a run at a distance. The diametrical distance between the two leg edges 62 a is designated by qi. The pressure relief bores 38 are missing in this sketch as well as in the example in FIG. 8; they are replaced here by radial relief bores 67, which start in the bearing bracket housing 20 below the angle profiles 60 a and go from the base of the connecting piece 36 to the outside. Another pressure relief bore is identified by 69.
Die Fig. 8 bietet statt jenes Winkelprofils 60a ein — ebenfalls aus Profilstahl bestehendes — Rinnenprofil 74 an mit von einem — an jener Innenfläche des Verbindungsrohres 36 mit seinen Längskonturen 76 festliegenden und mit dieser einen Hohlraum 77 bildenden — Rinnenboden 75 der Länge g rechtwinkelig, d.h. parallel zur Mittelachse M, abragenden Rinnenschenkeln 78 der Länge h; die Schenkelkanten 79 stehen in Abstand zur Störkontur 21 des Lagerträgergehäuses 20 sowie in Abstand qi zueinander. Zudem sind die Schenkelkanten 61 zur Mittelachse M hin einwärts geneigt. Auch hierzu sind die oben beschriebenen radialen Entlastungsbohrungen 67 vorgesehen.8 instead of that angular profile 60 a has a channel profile 74, which also consists of sectional steel, with a channel bottom 75 of length g rectangular, which is fixed to the inner surface of the connecting tube 36 with its longitudinal contours 76 and forms a cavity 77 with it, ie parallel to the central axis M, protruding gutter legs 78 of length h; the leg edges 79 are at a distance from the interference contour 21 of the bearing support housing 20 and at a distance qi from one another. In addition, the leg edges 61 are inclined inwards towards the central axis M. The radial relief bores 67 described above are also provided for this purpose.
Beim Ausführungsbeispiel einer Kreiselpumpe 10i nach Fig. 10 ist die der Druckentlastungsbohrung 38 zum Schutz zugeordnete Hohlwelle 70 der Länge z von hier 150 mm mit der Innenfläche des Verbindungsstutzens 36 durch -- bevorzugt radial gestellte — Flachprofile bzw. Flacheisen 80 verbunden, deren Unterkanten 82 mit der Fuß- oder unteren Endkante 72 der Hohlwelle 70 etwa fluchten und so der kragenartigen Anformung 32 des Lagerträgergehäuses 20 aufsitzen. Nach oben hin überragt die Firstkante 71 der Hohlwelle 70 die Flacheisen 80 geringfügig. Auch hier ist im übrigen ein Siebansatz 19 mit dem Anschlussflansch 12 des Spiralgehäuses 14 durch Schrauben 13 verbunden. In the exemplary embodiment of a centrifugal pump 10i according to FIG. 10, the hollow shaft 70 of length z of 150 mm assigned to the pressure relief bore 38 for protection is connected to the inner surface of the connecting piece 36 by - preferably radially placed - flat profiles or flat iron 80, the lower edges 82 of which of the foot or lower end edge 72 of the hollow shaft 70 are approximately aligned and thus rest on the collar-like projection 32 of the bearing carrier housing 20. The ridge edge 71 of the hollow shaft 70 projects upward the flat iron 80 slightly. Here, too, a screen attachment 19 is connected to the connecting flange 12 of the spiral housing 14 by screws 13.

Claims

PATENTANSPRÜCHE
1. Kreiselpumpe zum Fördern eines Fördermediums mit in einem Spiralgehäuse (14) vorgesehenem Laufrad (28) sowie dem Spiralgehäuse (14) zugeordnetem Lagertragergehause (20) für zumindest ein Lager (30, 31) einer an das Laufrad (28) angeschlossenen Pumpenwelle (24), die andernends ein weiteres Lagertragergehause (20a) durchsetzt und jenseits dessen an einen Antrieb (42) angeschlossen ist, wobei sich zwischen den Lagerträgergehäusen (20, 20a) ein die Pumpenwelle (24) umgebendes Verbindungsrohr (36) erstreckt,1. A centrifugal pump for conveying a medium with an impeller (28) provided in a spiral housing (14) and a bearing support housing (20) assigned to the spiral housing (14) for at least one bearing (30, 31) of a pump shaft (24) connected to the impeller (28) ) which penetrates another bearing support housing (20 a ) at the other end and is connected to a drive (42) beyond it, a connecting tube (36) surrounding the pump shaft (24) extending between the bearing support housings (20, 20 a ),
dadurch gekennzeichnet,characterized,
dass in der Wandung des Verbindungsrohres oder Verbindungsstutzens (36) wenigstens eine Druckentlastungsbohrung (38) vorgesehen und dieser innenseitig ein sie überdeckendes Teilhohlprofil (60, 60a, 74) zugeordnet ist, welches parallel zur Wellenachse (A) und in radialem Abstand zur Pumpenwelle (24) verläuft oder, dass wenigstens eine Druckentlastungsbohrung (67) unterhalb der/des Teilhohlprofile/s (60a, 74) durch das diesem/diesen benachbarte Lagertragergehause (20, 20a) geführt ist.that at least one pressure relief bore (38) is provided in the wall of the connecting pipe or connecting piece (36) and this is assigned a partial hollow profile (60, 60 a , 74) covering it on the inside, which is parallel to the shaft axis (A) and at a radial distance from the pump shaft ( 24) or that at least one pressure relief bore (67) is guided below the partial hollow profile (s) (60 a , 74) through the bearing carrier housing (20, 20 a ) adjacent to it.
2. Kreiselpumpe nach Anspruch 1, dadurch gekennzeichnet, dass das Teilhohlprofil (60, 60a, 74) ein parallel zu seiner Längsachse (A) geteiltes Hohlprofil sowie rinnenartig ausgebildet ist.2. Centrifugal pump according to claim 1, characterized in that the partial hollow profile (60, 60 a , 74) is a hollow profile which is divided parallel to its longitudinal axis (A) and is channel-shaped.
3. Kreiselpumpe nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass von jedem der Lagertragergehause (20, 20a) ein Teilhohlprofil (60, 60a, 74) ausgeht, welches zumindest eine dem Lagertragergehause benachbarte Druckentlastungsbohrung (38) übergreift.3. Centrifugal pump according to claim 1 or 2, characterized in that from each of the bearing carrier housing (20, 20 a ) a partial hollow profile (60, 60 a , 74), which at least one pressure relief bore (38) adjacent to the bearing support housing overlaps.
Kreiselpumpe nach Anspruch 3, dadurch gekennzeichnet, dass beide Teilhohlprofile (60, 60a, 74) miteinander fluchten und in Abstand (ni) zueinander enden.Centrifugal pump according to Claim 3, characterized in that the two partial hollow profiles (60, 60 a , 74) are aligned with one another and end at a distance (ni) from one another.
Kreiselpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Teilhohlprofil ein Winkelprofil (60) ist, das mit seinen Schenkelkanten (61) beidseits der Druckentlastungsbohrung/en (38) am Verbindungsstutzen (36) innenseitig festgelegt ist und dessen Profilfirstkante (62) in Abstand zur Pumpenwelle (24) verläuft (Fig. Centrifugal pump according to one of claims 1 to 4, characterized in that the partial hollow profile is an angular profile (60) which is fixed on the inside with its leg edges (61) on both sides of the pressure relief bore (s) (38) on the connecting piece (36) and its profile ridge edge (62 ) runs at a distance from the pump shaft (24) (Fig.
6) .6).
Kreiselpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Teilhohlprofil ein Winkelprofil (60a) ist, das mit seiner Profilfirstkante (62) am Verbindungsstutzen (36) innenseitig festgelegt ist und dessen Schenkelkanten (61) in Abstand zur Pumpenwelle (24) verlaufen (Fig. Centrifugal pump according to one of claims 1 to 4, characterized in that the partial hollow profile is an angular profile (60 a ), which is fixed on the inside with its profile ridge edge (62) on the connecting piece (36) and whose leg edges (61) are spaced apart from the pump shaft (24 ) run (Fig.
7) .7).
Kreiselpumpe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Teilhohlprofil ein Rinnenprofil (74) ist, dessen Rinnenboden (75) beidseits am Verbindungsstutzen (36) innenseitig festgelegt ist und dessen Rinnenschenkel (78) zum Verbindungsstutzen (36) hin abragen (Fig. Centrifugal pump according to one of claims 1 to 4, characterized in that the partial hollow profile is a channel profile (74), the channel bottom (75) of which is fixed on the inside on both sides of the connecting piece (36) and whose channel leg (78) protrude towards the connecting piece (36) ( FIG.
8) .8th) .
Kreiselpumpe nach Anspruch 7, gekennzeichnet durch einen rechteckigen Querschnitt des Rinnenprofils (74). Centrifugal pump according to claim 7, characterized by a rectangular cross section of the channel profile (74).
9. Kreiselpumpe nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Schenkelkanten (79) der Rinnenschenkel (78) querschnittlich zum Rinnenboden (75) hin geneigt sind.9. Centrifugal pump according to claim 7 or 8, characterized in that the leg edges (79) of the gutter legs (78) are inclined in cross-section to the gutter bottom (75).
10. Kreiselpumpe nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Schenkelkanten (79) der Rinnenschenkel (78) in Abstand zur Pumpenwelle (24) verlaufen.10. Centrifugal pump according to one of claims 7 to 9, characterized in that the leg edges (79) of the gutter legs (78) run at a distance from the pump shaft (24).
11. Kreiselpumpe nach einem der Ansprüche 1, 6 bis 10, dadurch gekennzeichnet, dass die Druckentlastungsbohrung/en (67) den sich achswärts öffnenden Winkelprofilen (60a) bzw. den Rinnenprofilen (74) zugeordnet sind.11. Centrifugal pump according to one of claims 1, 6 to 10, characterized in that the pressure relief bore (s) (67) are associated with the axially opening angle profiles (60 a ) or the channel profiles (74).
12. Kreiselpumpe nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass dem die Druckentlastungsbohrung/en (38) überdeckenden Teilhohl- oder Winkelprofil (60, 60a, 74) diametral ein weiteres Profil (60, 60a, 74; 63) , bevorzugt ein gleich gestaltetes Profil, gegenüber liegt .12. Centrifugal pump according to one of claims 1 to 11, characterized in that the partial pressure relief bore (s) (38) covering partial hollow or angular profile (60, 60 a , 74) diametrically a further profile (60, 60 a , 74; 63) , preferably an identically designed profile, is opposite.
13. Kreiselpumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass von dem dem Teilhohl- oder Winkelprofil (60) gegenüberliegenden Wandungsbereich des Verbindungsstutzens (36) zumindest zwei weitere Profile, bevorzugt radiale Stegprofile (63), in seitlichem Abstand zueinander abragen.13. Centrifugal pump according to one of claims 1 to 5, characterized in that from the partial hollow or angular profile (60) opposite wall area of the connecting piece (36) at least two further profiles, preferably radial web profiles (63), project at a lateral distance from one another.
14. Kreiselpumpe nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass der Verbindungsstutzen (36) end- wärts mit dem einen Ende der/des innenseitig in ihm festgelegten Profile/s (60, 63) in einer Ringnut (64) des Lagerträgergehäuses (20, 20a) angeordnet ist. 14. Centrifugal pump according to one of claims 1 to 13, characterized in that the connecting piece (36) end- wards with one end of the / the inside of it fixed profile / s (60, 63) in an annular groove (64) of the bearing bracket housing (20, 20 a ) is arranged.
15. Kreiselpumpe nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass 'die Druckentlastungsbohrung/en (38) und deren Teilhohl- oder Winkelprofil/e (60) in einer Radialebene (Q) liegen, in welcher sich der Aus- lass (18) des Spiralgehäuses (14) befindet (Fig. 3).15. Centrifugal pump according to one of claims 1 to 14, characterized in that ' the pressure relief bore (s) (38) and their partial hollow or angular profile (s) (60) lie in a radial plane (Q) in which the outlet ( 18) of the volute (14) is located (Fig. 3).
16. Kreiselpumpe nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass die Pumpenwelle (24) von einer Hohlwelle (70) umfangen und diese in radialem Abstand zu dem/den Profil/en (60, 60a, 74; 63) angeordnet ist.16. Centrifugal pump according to one of claims 1 to 15, characterized in that the pump shaft (24) encompass a hollow shaft (70) and this is arranged at a radial distance from the profile (s) (60, 60 a , 74; 63) is.
17. Kreiselpumpe nach Anspruch 16, dadurch gekennzeichnet, dass die Hohlwelle (70) mit ihrer Endkante (72) einer zentralen Anformung (32) des Lagerträgergehäuses (20, 20a) anliegt, welche von der Pumpenwelle (24) durchsetzt ist.17. Centrifugal pump according to claim 16, characterized in that the hollow shaft (70) with its end edge (72) of a central projection (32) of the bearing bracket housing (20, 20 a ), which is penetrated by the pump shaft (24).
18. Kreiselpumpe nach Anspruch 16 oder 17, dadurch gekennzeichnet, dass der Außenfläche der Hohlwelle (70) an der Stirnfläche des Lagerträgergehäuses (20, 20a) eine Störkontur (21) benachbart ist.18. Centrifugal pump according to claim 16 or 17, characterized in that the outer surface of the hollow shaft (70) on the end face of the bearing support housing (20, 20 a ) is adjacent to an interference contour (21).
19. Kreiselpumpe nach einem der Ansprüche 16 bis 18, dadurch gekennzeichnet, dass der radiale Abstand der Pumpenwelle (24) von der Hohlwelle (70) etwa deren radialem Abstand von der/den Profilfirstkante/n (62) entspricht.19. Centrifugal pump according to one of claims 16 to 18, characterized in that the radial distance of the pump shaft (24) from the hollow shaft (70) corresponds approximately to its radial distance from the profile ridge edge (s) (62).
20. Kreiselpumpe nach einem der Ansprüche 1 bis 19, dadurch gekennzeichnet, dass an der Außenseite des Verbindungsstutzens (36) ein Längsrohr (66) verläuft, das Querkanäle (68) in beiden Lagerträgergehäusen (20, 20a) miteinander verbindet. 20. Centrifugal pump according to one of claims 1 to 19, characterized in that on the outside of the connecting piece (36) runs a longitudinal tube (66) which connects the transverse channels (68) in both bearing bracket housings (20, 20 a ).
21. Kreiselpumpe nach Anspruch 20, dadurch gekennzeichnet, dass das Längsrohr (66) parallel zur Wellenachse (A) gerichtet ist.21. Centrifugal pump according to claim 20, characterized in that the longitudinal tube (66) is directed parallel to the shaft axis (A).
22. Kreiselpumpe nach einem der Ansprüche 1 bis 21, dadurch gekennzeichnet, dass das Teilhohlprofil aus mehreren Komponenten besteht, welche die Druckentlastungsbohrung/en (36) abdecken.22. Centrifugal pump according to one of claims 1 to 21, characterized in that the partial hollow profile consists of several components which cover the pressure relief bore (s) (36).
23. Kreiselpumpe nach Anspruch 22, dadurch gekennzeichnet, dass von der Innenfläche des Verbindungsstutzens (36) achswärts Flachprofile (80) abragen.23. Centrifugal pump according to claim 22, characterized in that from the inner surface of the connecting piece (36) project axially flat profiles (80).
24. Kreiselpumpe nach Anspruch 22 oder 23, dadurch gekennzeichnet, dass die Hohlwelle (70) durch Flachprofile (80) mit der Innenfläche des Verbindungsstutzens (36) verbunden ist.24. Centrifugal pump according to claim 22 or 23, characterized in that the hollow shaft (70) by flat profiles (80) is connected to the inner surface of the connecting piece (36).
25. Kreiselpumpe nach einem der Ansprüche 13 bis 21, dadurch gekennzeichnet, dass die Hohlwelle (70) den Fuß der Pumpenwelle (24) umfängt. 25. Centrifugal pump according to one of claims 13 to 21, characterized in that the hollow shaft (70) surrounds the foot of the pump shaft (24).
EP03793695A 2002-08-12 2003-08-06 Centrifugal pump Expired - Lifetime EP1529167B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10237352 2002-08-12
DE10237352 2002-08-12
PCT/EP2003/008697 WO2004022979A1 (en) 2002-08-12 2003-08-06 Centrifugal pump

Publications (2)

Publication Number Publication Date
EP1529167A1 true EP1529167A1 (en) 2005-05-11
EP1529167B1 EP1529167B1 (en) 2010-03-17

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ID=30775290

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03793695A Expired - Lifetime EP1529167B1 (en) 2002-08-12 2003-08-06 Centrifugal pump

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EP (1) EP1529167B1 (en)
AT (1) ATE461367T1 (en)
DE (3) DE10256792B4 (en)
ES (1) ES2342597T3 (en)
WO (1) WO2004022979A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7492069B2 (en) * 2001-04-19 2009-02-17 Baker Hughes Incorporated Pressurized bearing system for submersible motor
DE102005013684A1 (en) * 2005-03-17 2006-09-21 Flux-Geräte GmbH Container pump, preferably for conveying urea
CN107152407A (en) * 2017-06-21 2017-09-12 江苏建安泵业制造有限公司 A kind of application submerged pump for conveying particle and viscous media
EP4337866A1 (en) 2021-05-24 2024-03-20 FLSmidth A/S Tank pump having a tangential feed inlet and variable geometry infeed shelf
CN113357159B (en) * 2021-07-05 2022-05-31 陈荣国 Self-suction type composite shield pump based on direct-current permanent magnet motor
WO2023199216A1 (en) * 2022-04-15 2023-10-19 Weir Pump and Valve Solutions, Inc Centrifugal pump casing with strainer device attachment
WO2023218426A1 (en) 2022-05-12 2023-11-16 Flsmidth A/S Froth transport system, de-aeration device, and method for efficiently pumping frothy or aerated slurries

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747143C (en) * 1941-04-04 1944-09-11 Galassi Ortolani & Mueller Centrifugal pump
US3731940A (en) * 1971-08-06 1973-05-08 W Spruiell Elastomer seal with a plurality of annular ribs for a rotating shaft of a centrifugal pump or the like
DE2262017C3 (en) * 1972-12-19 1981-07-02 H. Wernert & Co Kg, 4330 Muelheim Vertical, hanging centrifugal pump
US3936221A (en) * 1974-09-16 1976-02-03 Goulds Pumps, Inc. Vertical cantilever pump
US4394140A (en) * 1977-12-30 1983-07-19 Smith International, Inc. Degassing system and centrifugal pump
FR2717535A1 (en) * 1994-03-17 1995-09-22 Siebec Sa Vertical pump.
US6315530B1 (en) * 1999-10-05 2001-11-13 Buffalo Pumps, Inc. Submerged pump having a shaft isolator
DE10051324C1 (en) * 2000-10-17 2002-02-21 Brinkmann Pumpen K H Brinkmann Fluid pump includes spray protection provided by spray protection chamber above pump chamber for collection of leakage fluid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004022979A1 *

Also Published As

Publication number Publication date
DE10256792A1 (en) 2004-03-04
EP1529167B1 (en) 2010-03-17
ES2342597T3 (en) 2010-07-09
DE50312528D1 (en) 2010-04-29
WO2004022979A1 (en) 2004-03-18
DE10336947A1 (en) 2004-02-26
DE10256792B4 (en) 2005-01-13
ATE461367T1 (en) 2010-04-15

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