EP0527227B1 - Pompe a aubes en spirale - Google Patents

Pompe a aubes en spirale Download PDF

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Publication number
EP0527227B1
EP0527227B1 EP91904797A EP91904797A EP0527227B1 EP 0527227 B1 EP0527227 B1 EP 0527227B1 EP 91904797 A EP91904797 A EP 91904797A EP 91904797 A EP91904797 A EP 91904797A EP 0527227 B1 EP0527227 B1 EP 0527227B1
Authority
EP
European Patent Office
Prior art keywords
blades
casing
pump
drive shaft
rotary drive
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.)
Expired - Lifetime
Application number
EP91904797A
Other languages
German (de)
English (en)
Other versions
EP0527227A1 (fr
EP0527227A4 (en
Inventor
Eiichi 5-9 Komadome-Cho 2-Chome Ishigaki
Kazumitsu 1080 Ejiri-Cho Oura
Takaharu 1434 Oazamatsuzaki Takuma-Cho Honda
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.)
Ishigaki Mechanical Industry Co Ltd
Original Assignee
Ishigaki Mechanical Industry Co Ltd
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 Ishigaki Mechanical Industry Co Ltd filed Critical Ishigaki Mechanical Industry Co Ltd
Publication of EP0527227A1 publication Critical patent/EP0527227A1/fr
Publication of EP0527227A4 publication Critical patent/EP0527227A4/en
Application granted granted Critical
Publication of EP0527227B1 publication Critical patent/EP0527227B1/fr
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
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • 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
    • F04D29/18—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00—Axial-flow pumps
    • F04D3/02—Axial-flow pumps of screw type

Definitions

  • the present invention relates to a vertical pump having a single or a plurality of helical or spiral blades according to the pre-characterizing portion of claim 1 and, more particularly, to a pump suitable for sewage treatment or the like.
  • a rotor having a plurality of blades extending radially in a plane perpendicular to a main spindle of the pump is arranged at a lower position within a casing of the pump and is rotated to execute drawing or suction of water from a lower end of the casing.
  • this vertical pump has the following disadvantages. That is, since the pump comprises the plurality of blades which are so spread as to extend radially in the plane perpendicular to the main spindle of the pump, toward the casing, a passing area of water stream or flow is limited or narrowed. Particularly, in a case where sewage is sucked or drawn, cloths and solid matters which may be contained in the sewage lodge within the pump.
  • centrifugal pump which is disclosed in Japanese Patent Laid-Open No. SHO 57-181997, as a pump having a single helical blade.
  • centrifugal pump has the following disadvantage. That is, since water drawn in a direction of the main spindle of the pump flows in a direction perpendicular to the main spindle, solid matters and the like lodge within the pump.
  • a single helical blade is fixedly mounted on a tip of a rotary drive shaft of the pump, an outer peripheral edge portion of the single helical blade is in proximity with an inner surface of a casing of the pump, the casing extends in the direction of the rotary drive shaft, the helical blade is arranged with superior balance with respect to the rotary drive shaft, an interval between upper and lower blade portions of the blade is widened, and a plurality of long twisted guide vanes are arranged at a flow passage above the blade.
  • the pump is brought to a vertical oblique-flow pump in which a configuration of the casing at a portion in which the helical blade and the guide vanes exist is brought to a bowl or pot type configuration.
  • a plurality of helical blades each having the above-described aspect are arranged with them in shift in phase with equal intervals each other about the rotary drive shaft of the pump.
  • volumetric efficiency is raised, and it is possible to raise the lift. Furthermore, it is possible also to enlarge the caliber or aperture of the pump so that the discharge quantity or delivery can increase.
  • enlargement of the aperture of the pump increases the dimension of the blade so that its weight considerably increases, balance with respect to the drive shaft of the blade is apt to be deteriorated by the single helical blade so that harmful vibration is generated in the pump and the efficiently of the pump is reduced.
  • the balance is extremely improved so that vibration imparted to the pump is extremely reduced.
  • suction ports and discharge ports within the casing are located shaft-symmetrically with respect to the main spindle of the pump. Accordingly, balance becomes superior. Moreover, also in a case where there are three helical blades, since the suction ports and the discharge ports are similarly distributed symmetrically, there can be produced similar advantages.
  • a pump having a single or a plurality of helical blades, according to the invention, will be described below in further detail with reference to the drawings.
  • Fig. 1 is a schematic view showing a pump 1 according to the invention.
  • a hub 8 is fixedly mounted on a forward end of a rotary drive shaft 2 which is rotated by drive means, for example, a motor (not shown).
  • At least one helical blade 10 is mounted on the hub 8.
  • the drive shaft 2 When the drive shaft 2 is rotated, water is drawn from a suction port 4 of a bell mouth 24 which is arranged below a casing 20 of the pump 1.
  • the drawn water is straightened or uniformed by a plurality of twisted guide vanes 14 which are arranged above the helical blade 10 at a location within the casing 20, and is pumped up to a tube 18 at an upper portion of the casing 20.
  • the guide vanes 14 gradually uniform the water flow pumped up helically along the helical blade, so as to flow straight within the tube 18, to eliminate evils such as vibration or the like to the pump.
  • the guide vanes 14 are twisted about 270° .
  • the twisted guide vanes 14 are lengthened in order to obtain or produce adequate uniforming of the flow.
  • the casing 20 is lengthened. Accordingly, the casing 20 is divided into multi-stage portions 21, 22 and 23 at a location between the helical blade 10 and the guide vanes 14 and at a location at an intermediate portion of each of the guide vanes 14, for the purpose of assembling and maintenance of the pump.
  • Fig. 2 is a partially cross-sectional side elevational view showing a principal portion of a lower end section of the pump illustrated in Fig. 1, showing the pump 1 having a single helical blade 10.
  • the blade 10 has a configuration thereof wound helically about the rotary drive shaft 2 through an adequate angle.
  • the blade 10 is mounted on the hub 8 at a proximal end portion 30 of the blade 10.
  • An outer peripheral edge portion 32 opposite to the proximal end portion 30 is in proximity with an inner surface of the casing 20.
  • the hub 8 and the helical blade 10 may be formed integrally as a casting.
  • a forward end potion 33 of the helical blade 10 extends downwardly less than a forward end portion 9 of the hub 8, whereby the wide suction port 4 is formed.
  • An interval between the upper and lower blade portions serving as a flow passage is adequately widened so as to allow cloths and solid matters included in sewage and the like pumped up, to pass.
  • the pumped-up water is drawn from the suction port 4, flows toward a discharge port 5 through gaps between the blade portions, and is uniformed by the plurality of twisted guide vanes 14 each of which is long in length, as described previously.
  • the helical blade 10 is so formed that weight balance is superior with respect to the drive shaft 2. Further, the blade exists continuously over the predetermined length in the direction along the drive shaft, different from the conventional pump which has the plurality of blades only in a single plane perpendicular to the drive shaft 2. Thus, it is possible to increase the lift.
  • the vertical oblique-flow pump 1 is shown whose configuration is such that a portion of the vertical oblique-flow pump 1 including the helical blade 10 and the guide vanes 14 of which casing 20 is swelled or bulged into the form of a bowl- or pot-like configuration.
  • the vertical pump 1 may be a vertical axial-flow pump having no bowl portion and having a configuration in which the casing 20 is straight as a whole.
  • Fig. 3 is a partially cross-sectional side elevational view showing a principal portion of a lower end section of the pump 1 illustrated in Fig. 1.
  • Fig. 4 is a bottom view of Fig. 3, showing the pump 1 having a pair or helical blades 10 and 11.
  • Each of the helical blades 10 and 11 is manufactured such that a sheet material is processed into a helical configuration.
  • the blades 10 and 11 are wound helically through 360° about the rotary drive shaft 2 of the pump 1 such that their phases shift 180° from each other so as to be symmetrical with respect to the shaft.
  • the blades 10 and 11 are mounted on the hub 8 at their respective proximal end portions 30 and 30.
  • Outer peripheral edge portions 32 and 32 opposite respectively to the proximal end portions 30 and 30 are in proximity with the inner surface of the casing 20.
  • the forward end portions 33 and 33 of the respective helical blades 10 and 11 extend downwardly from the forward end portion 9 of the hub 8, to thereby form wide suction ports 4 and 4.
  • An interval of the alternate blade portions of the two blades 10 and 11 serving as a flow passage is adequately widened so that cloths and solid matters included in the sewage and the like pumped up can pass.
  • the pumped water is drawn simultaneously from the two suction ports 4 and 4 which are located in symmetrical relation to each other with respect to the shaft, passes through gaps between the blade portions, generates a flow in a single helical direction, flows into the two discharge ports 5 and 5 which are located in symmetrical relation to each other with reference to the shaft, and is uniformed by the plurality of twisted guide vanes 14 which are long in length, as described previously.
  • the blades are arranged symmetrically with respect to the shaft, and the suction ports and the discharge ports are also arranged in symmetrical relation to each other.
  • the pump is brought to a pump extremely superior in balance.
  • energy is given to the water at a single eccentric location, and energy cannot be applied equally, so that volumetric efficiency is bad.
  • the delivery or discharge quantity of the pump is in proportion to the caliber or aperture of the pump.
  • Fig. 5 shows a case where three identical helical blades 10, 11 and 12 are mounted on the hub 8 in place of the two helical blades of the pump illustrated in Fig. 3, with phases shifted 120° from each other. Also in this case, the blades as well as the suction ports and the discharge ports are dispersed equally similarly to the pump illustrated in Fig. 3, so that the pump is brought to a pump superior in balance and superior in volumetric efficiency.
  • Fig. 3 shows the vertical oblique-flow pump 1 in which a portion including the helical blades 10 and 11 and the guide vanes 14 of the casing 20 are bulged in the form of a bowl or pot.
  • the pump may be brought to a vertical axial-flow pump in which there is no bowl portion and which has a configuration in which the entire casing 20 is straight.
  • the pump having a single or a plurality of helical blades, according to the invention can be made large in lift and large in discharge quantity, there are produced advantages that a conventional relay station for pumping up arranged in a case where the lift is small can be omitted, and the like. Thus, it is possible to utilize the pump widely in various industries.
  • the pump can also be utilized for pumping up of sewage or the like containing articles such as a block of cloth or papar which tends to block conventional pumps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Pompe verticale (1) possédant des aubes en spirale (10, 11 et 12) fixées à l'extrémité distale de son arbre principal (2). Une ou plusieurs aubes en spirales (10, 11 et 12) sont disposées de manière à être bien équilibrées par rapport à l'arbre principal (2) de la pompe, ce qui élargit le passage d'écoulement entre les aubes en spirale, qui est du type sans fermeture. Cette pompe est particulièrement indiquée pour l'élimination des eaux d'égout.

Claims (7)

  1. Pompe verticale dans laquelle une ou plusieurs aubes (10, 11, 12) sont montées fixes sur l'extrémité avant d'un axe d'entraînement en rotation (2) dans un carter (1) de ladite pompe, lesdites aubes (10,11,12) ayant une configuration en hélice et la pluralité d'aubes (10,11,12) étant disposée avec leurs pas respectivement décalés de manière équidistante par rapport audit arbre d'entraînement (2) en rotation , ledit carter (20) s'étendant suivant une direction dudit arbre (2) d'entraînement en rotation et comportant une embouchure en cloche (24) fixée à une extrémité inférieure de ce dernier, une partie dudit carter (20) présentant une configuration renflée en forme de bol, et une pluralité de parois de guidage (14) torsadées et disposées selon un passage de fluide dans une partie supérieure dudit carter (20) présentant ladite configuration en forme de bol et au-dessus desdites aubes (10,11,12), caractérisée en ce qu'une partie inférieure dudit carter (20) en forme de bol entourne lesdites aubes (10,11,12), une partie périphérique extérieure (32) de chacune desdites aubes l10,11,12) étant à proximité d'une surface intérieure dudit carter (20), chaque partie terminale avant (33) desdistes aubes (10,11,12) s'étendant vers le bas au-delà de l'extrémité inférieure dudit carter (20) reliée à ladite embouchure en cloche (24), et ladite partie en forme de bol dudit carter (20), entourant lesdites aubes (10,11,12) et lesdites parois de guidage (14), est divisée en un endroit situé entre lesdites aubes et les lesdites parois de guidage et en une zone intermédiaire des parois de guidage (14), ledit carter comprenant ainsi trois parties (21,22,23).
  2. Pompe verticale selon la revendication 1, dans laquelle deux aubes (10,11) sont montées sur ledit arbre (2) d'entraînement en rotation, lesdites aubes (10,11) étant disposées symétriquement par rapport audit arbre avec leurs pas décalés de 180° l'un par rapport à l'autre autour dudit arbre (2) d'entraînement en rotation.
  3. Pompe verticale selon la revendication 1, dans laquelle trois aubes (10,11,12) sont montées sur ledit axe (2) d'entraînement en rotation, lesdites aubes (10,11,12) étant disposées avec leurs pas décalés de 120° l'un par rapport à l'autre autour dudit arbre (2) d'entrainement en rotation.
  4. Pompe verticale selon la revendication 1, dans laquelle une seule aube hélicoïdale (10), ayant une partie terminale avant (33), s'étend vers le bas au-delà de l'extrémité inférieure dudit carter (20) reliée à ladite embouchure (24) en forme de cloche, ladite aube (10) étant disposée pour présenter un équilibre en masse plus élevé par rapport à l'arbre (2) entraîné en rotation, et présentant une grande distance entre les parties d'aubes inférieure et supérieure de ladite aube (10).
  5. Pompe selon l'une ou plusieurs des revendications 1 à 3, dans laquelle chacune desdites parties terminales avant (33) desdites aubes hélicoïdales qui se prolongent vers le bas au-delà de l'extrémité inférieure dudit carter (20) reliée à ladite embouchure (24) en forme de cloche, constitue une entrée (4) de succion, lesdites entrées de succion (4) étant disposées de manière symétrique par rapport audit arbre (2).
  6. Pompe verticale selon l'une ou plusieurs des revendications 1 à 5, dans laquelle des eaux d'égout pompées ou équivalent, sont entraînées depuis les ouvertures (4) de succion, pour former un flot en hélice au travers d'espaces formés entre lesdites parties d'aubes respectivement haute et basse, vers des ouvertures (5) d'évacuation, lesdites ouvertures (5) d'évacuation étant disposées de manière symétrique par rapport audit axe (2), le flot étant ensuite graduellement uniformisé par ladite pluralité de parois de guidage (14).
  7. Pompe verticale selon l'une ou plusieurs des revendications 1 à 6, dans laquelle ledit carter (20) présente une configuration générale rectiligne.
EP91904797A 1991-02-28 1991-02-28 Pompe a aubes en spirale Expired - Lifetime EP0527227B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1991/000265 WO1992015788A1 (fr) 1991-02-28 1991-02-28 Pompe a aubes en spirale

Publications (3)

Publication Number Publication Date
EP0527227A1 EP0527227A1 (fr) 1993-02-17
EP0527227A4 EP0527227A4 (en) 1993-07-28
EP0527227B1 true EP0527227B1 (fr) 1996-05-22

Family

ID=14014280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91904797A Expired - Lifetime EP0527227B1 (fr) 1991-02-28 1991-02-28 Pompe a aubes en spirale

Country Status (8)

Country Link
EP (1) EP0527227B1 (fr)
KR (1) KR960009777B1 (fr)
AU (1) AU654269B2 (fr)
CA (1) CA2080591C (fr)
DE (1) DE69119765T2 (fr)
DK (1) DK0527227T3 (fr)
GB (1) GB2259113B (fr)
WO (1) WO1992015788A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ306556A (en) * 1995-04-28 1998-06-26 Ishigaki Co Ltd Marine jet propulsion unit: axially directing stator vanes downstream of multiple spiral vaned impeller
JP3228084B2 (ja) 1995-07-19 2001-11-12 株式会社石垣 立軸スクリュー付斜流ポンプ
RU2252337C2 (ru) * 2003-07-04 2005-05-20 Федеральное государственное унитарное предприятие "Государственное научно-производственное предприятие "Регион" Шнекоцентробежный насос
ATE528511T1 (de) * 2007-08-16 2011-10-15 Frideco Ag Pumpenlaufrad und pumpe umfassend ein derartiges pumpenlaufrad
NL2003467C2 (nl) 2009-09-10 2011-03-14 Nijhuis Pompen B V Visvriendelijke pomp- of turbineinrichting.
NL2008948C2 (nl) * 2012-06-06 2013-12-09 G A M Manshanden Man B V Scheepsschroef.
US10030627B2 (en) 2012-09-24 2018-07-24 Chris Rorres Methods and apparatus for moving fluid using a strake
GB201614460D0 (en) 2016-08-24 2016-10-05 Rotech Group Ltd Improvements in and relating to underwater excavation apparatus
CN113027821B (zh) * 2021-04-01 2022-07-15 中国机械工业第二建设工程有限公司 一种潜水排污泵用安装辅助设备

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
GB783468A (en) * 1954-11-03 1957-09-25 Borg Warner Improvements in or relating to pump assemblies
JPS328084Y1 (fr) * 1955-05-04 1957-07-29
US3163119A (en) * 1961-07-03 1964-12-29 North American Aviation Inc Inducer
US3148464A (en) * 1962-06-07 1964-09-15 Kenneth M Jones Dredging apparatus
US3156190A (en) * 1963-03-14 1964-11-10 Hidrostal Pump impeller
US3398694A (en) * 1966-08-11 1968-08-27 Marine Constr & Design Co Submersible pump device for net brailing
AU2513871A (en) * 1971-02-05 1972-08-10 Ernest Alfred Keller Ainslie Impeller for liquids
US3771900A (en) * 1971-10-14 1973-11-13 S Baehr Graduated screw pump
JPS495002U (fr) * 1972-04-13 1974-01-17
JPS495002A (fr) * 1972-04-27 1974-01-17
SE376051B (fr) * 1973-05-09 1975-05-05 Stenberg Flygt Ab
US4063849A (en) * 1975-02-12 1977-12-20 Modianos Doan D Non-clogging, centrifugal, coaxial discharge pump
GB1561454A (en) * 1976-12-20 1980-02-20 Inst Francais Du Petrole Devices for pumping a fluid comprising at least a liquid
JPS5922633B2 (ja) * 1980-11-07 1984-05-28 株式会社神戸製鋼所 低水素系被覆ア−ク溶接棒
JPS57181997A (en) * 1981-04-30 1982-11-09 Ebara Corp Single-blade impeller pump
JPS63126588A (ja) * 1986-11-17 1988-05-30 増田　閃一 超微細粒子除去装置
JPS63126588U (fr) * 1987-02-13 1988-08-18

Also Published As

Publication number Publication date
GB9221073D0 (en) 1992-11-18
DK0527227T3 (da) 1996-12-23
EP0527227A1 (fr) 1993-02-17
CA2080591A1 (fr) 1992-08-29
GB2259113A (en) 1993-03-03
EP0527227A4 (en) 1993-07-28
WO1992015788A1 (fr) 1992-09-17
DE69119765T2 (de) 1997-01-02
CA2080591C (fr) 1999-07-27
GB2259113B (en) 1995-05-17
KR960009777B1 (en) 1996-07-24
KR930700776A (ko) 1993-03-16
AU7330691A (en) 1992-10-06
DE69119765D1 (de) 1996-06-27
AU654269B2 (en) 1994-11-03

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