EP3530960B1 - Pumpe mit abstreif-finger - Google Patents

Pumpe mit abstreif-finger Download PDF

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Publication number
EP3530960B1
EP3530960B1 EP19158280.8A EP19158280A EP3530960B1 EP 3530960 B1 EP3530960 B1 EP 3530960B1 EP 19158280 A EP19158280 A EP 19158280A EP 3530960 B1 EP3530960 B1 EP 3530960B1
Authority
EP
European Patent Office
Prior art keywords
finger
volute
blade
pump according
axis
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.)
Active
Application number
EP19158280.8A
Other languages
English (en)
French (fr)
Other versions
EP3530960A1 (de
Inventor
Nicolas Petit
Stéphanie GONZALEZ
Mateusz Kaminski
Christoph Jager
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.)
KSB SAS
Original Assignee
KSB SAS
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 KSB SAS filed Critical KSB SAS
Priority to EP21213941.4A priority Critical patent/EP4006356B1/de
Priority to PL19158280T priority patent/PL3530960T3/pl
Publication of EP3530960A1 publication Critical patent/EP3530960A1/de
Application granted granted Critical
Publication of EP3530960B1 publication Critical patent/EP3530960B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/40—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
    • F04D29/4293—Details of fluid inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/04—Helico-centrifugal pumps
    • 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
    • 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
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/445—Fluid-guiding means, e.g. diffusers especially adapted for liquid pumps
    • 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
    • F04D7/045—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 with means for comminuting, mixing stirring or otherwise treating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/52—Outlet

Definitions

  • a pump comprising an impeller having at least one vane.
  • the impeller is surrounded by a volute.
  • a deflector, projecting towards the inside of the pump, is fixed to the volute upstream, in the direction of rotation of the impeller, of a groove made in the volute.
  • the deflector has a surface facing the blade while being at a shredding distance.
  • Deflector pumps are known from the documents US 2003/215,331 and US 2010/119,365 and speak WO 2017/198509 .
  • the document EP 1 357 294 describes a pump according to the preamble of claim 1 and the document EP 3 246 574 also forms part of the state of the art.
  • This chopper pump has the disadvantage that in particular the deflector and the blades wear out quickly, since they must jointly have a cutting effect.
  • the invention overcomes this drawback by means of a pump, which grinds only occasionally, but which essentially guides the fibrous materials, such as wipes, out of the pump, without necessarily having to cut them first.
  • the pump is characterized in that , seen from the side opposite the suction, the angle between the imaginary plane tangent to the spout and passing through the axis and an imaginary straight line, perpendicular to the axis and passing through the point, the furthest from the axis, from the intersection of the upper surface with the side attack surface, is between 110 and 140°.
  • the axis of the pump is vertical, but the pump can be placed so that its axis is inclined or horizontal.
  • the volute nose is the inner edge of the discharge nozzle, which is the furthest downstream in the direction in which liquid is conveyed.
  • the suction bottom if present, is considered part of the volute.
  • the finger can be attached to it.
  • the volute is preferably spiral. The radial distance between its outer wall and its inner wall increases from upstream to downstream from the finger to the beak.
  • the groove is curved from upstream to downstream from the entrance to the exit of the groove through the inside wall of the volute. It extends over an angle of approximately 80° to 100° and rises at an angle of 15 to 30° from inlet to outlet.
  • the wipe thus exits the space between the impeller and the volute at a point as close as possible to the discharge pipe, thus being conveyed as well as possible outside the pump, and this all the better as the volute is spiral, which means that the distance between the impeller and the volute increases in the direction of rotation of the impeller from the nose of the volute to the discharge pipe.
  • the wipe thus follows as short a path as possible between the suction and the groove and thus has less opportunity to curl up and, by stacking with other wipes, to cause clogging.
  • the angle between the tangent to the downstream edge of the entrance to the groove and the edge between the upper surface and the lateral leading surface is between 180 and 150°.
  • the longitudinal direction of the groove is thus, as far as possible, in the extension of the upper surface, which prevents a wipe from getting stuck before entering the groove.
  • the upper surface When the vane or vanes are tilted relative to the axis, the upper surface turns its convexity towards the vane. When the blade is in a plane perpendicular to the axis, the upper surface is flat.
  • the upper surface of the finger is convex and turns its convexity towards the blade and the tangent to the upper surface, at its most downstream point, forms, depending on the rotational position of the blade, an angle of 50 to 140° with the tangent to the vane at the point vertically aligned with said most downstream point. Moreover, this angle increases as a function of the rotation of the impeller described by the arrow F when looking at the impeller from the suction side.
  • a wipe is best deflected by the finger in the groove and is discharged into the pump without the pump having to perform a cutting effect.
  • the particular shape of the finger in secateurs allows a clean cut of the fabric and thus avoids the creation of tow as much as possible.
  • the angle between the imaginary tangent plane to the leading face passing through the line of intersection of the leading face and the upper face and the tangent plane imaginary of the upper face passing the line of intersection of the leading face of the upper face is between 60 and 90°.
  • a pump according to the invention is so effective that one can be satisfied with having only one groove and one finger. There is thus less damage to the hydraulic characteristics of the pump.
  • the finger has in particular the shape of a pyramid with three curved side faces.
  • the pump shown in figure 1 comprises an impeller 1 of axis X, X' vertical having two blades 2.
  • the impeller is driven in rotation in the direction of the arrow F by the output shaft of a motor, not shown.
  • the blades 2 are inclined on the axis X, X'.
  • the impeller 1 is surrounded by a volute 3.
  • the liquid to be conveyed enters via a suction at the bottom of the pump into the volute 3.
  • a finger 4 is fixed to the volute 3.
  • a groove 5 is provided in the volute 3 and ranges from the gap between impeller 1 and the volute 3 inside the volute 3.
  • a discharge pipe 9 starts from the volute 3 from a spout 10.
  • the finger 4 has a convex upper surface 8, the greater part of which is 0.3 mm from the blades 2 when the latter pass in front of the finger 4.
  • the tangent 11 to the upper surface 8 at its most downstream point forms , depending on the rotational position of the blades 2, an angle ⁇ of 90° with the tangent 12 to the blade 2 at the point aligned vertically with the said point 7.
  • the angle ⁇ between the tangent to the downstream edge of the entrance to the groove 5 and the edge between the upper surface 8 and the lateral attack surface 6 is 170°.
  • Finger 4 shown in figure 4 is pyramid-shaped having the upper surface 8, the lateral attack surface 6, and a lateral trailing surface 14, all curved.
  • the figure 7 shows that there is an angle ⁇ 1 between the side attack face 6 of the finger 4 and a vertical axis YY, which is between 0 and 15°. It also shows an angle ⁇ 2 between the upper face 8 of the finger and a horizontal axis ZZ, which is between 0 and 15°. The combination of the two angles gives ⁇ 3, which is an acute angle between 90 and 60°.

Landscapes

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

Claims (8)

  1. Pumpe, welche umfasst:
    - ein Laufrad (1), das drehbar um eine vertikale Achse (X, X') gelagert ist und wenigstens eine Schaufel (2) aufweist,
    - ein ortsfestes Spiralgehäuse (3), das eine Zunge (10) aufweist und das Laufrad (1) umgibt, und
    - einen Finger (4), der an dem Spiralgehäuse (3) unmittelbar stromabwärts der Eintrittsöffnung einer in der Innenwand des Spiralgehäuses (3) ausgebildeten, durchgehenden Nut (5) befestigt ist, unterhalb der Schaufel (2) in Richtung der Achse (X, X') vorsteht und eine Oberseite (8), von der sich wenigstens ein Teil in einem Abstand von 0,05 bis 0,5 mm von der Schaufel (2) befindet, und eine seitliche Angriffsfläche (6) aufweist,
    dadurch gekennzeichnet, dass, von der zur Ansaugseite entgegengesetzten Seite aus gesehen, der Winkel (Y) zwischen einer Ebene (P), die zu der Zunge (10) tangential ist und durch die Achse (X, X') verläuft, und einer imaginären Geraden (D), die zur Achse (X, X') senkrecht ist und durch den von der Achse (X, X') am weitesten entfernten Punkt des Schnittes der Oberseite (8) des Fingers (4) mit der seitlichen Angriffsfläche (6) verläuft, zwischen 110 und 140° liegt.
  2. Pumpe nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass das Spiralgehäuse (3) schneckenförmig ist.
  3. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Winkel (δ) zwischen der Tangente an den stromabwärtigen Rand der Eintrittsöffnung der Nut (5) und dem Rand zwischen der Oberseite (8) und der seitlichen Angriffsfläche (6) zwischen 180° und 150° liegt.
  4. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass:
    - die Oberseite (8) konvex ist und ihre Konvexität der Schaufel (2) zugewandt ist,
    - die Tangente (11) an die Oberseite (8) in deren am weitesten stromabwärts befindlichem Punkt je nach der Rotationsposition der Schaufel (2) einen Winkel (β) von 50 bis 140° mit der Tangente (12) an die Schaufel (2) in dem Punkt, der mit dem am weitesten stromabwärts befindlichem Punkt vertikal fluchtet, bildet.
  5. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass nur eine einzige Nut (5) und nur ein einziger Finger (4) vorhanden sind.
  6. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Teil des Fingers (4), welcher sich in einem Abstand von 0,1 bis 0,5 mm von der Schaufel (2) befindet, mindestens 50 % der Oberseite (8) ausmacht.
  7. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Finger (4) die Form einer Pyramide mit drei gekrümmten Seitenflächen hat.
  8. Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Winkel zwischen der zur Angriffsseite (6) tangentialen Ebene, die durch die Schnittlinie der Angriffsseite (6) und der Oberseite (8) verläuft, und der zur Oberseite (8) tangentialen Ebene, die durch die Schnittlinie der Angriffsseite (6) und der Oberseite (8) verläuft, zwischen 60 und 90° liegt.
EP19158280.8A 2018-02-22 2019-02-20 Pumpe mit abstreif-finger Active EP3530960B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21213941.4A EP4006356B1 (de) 2018-02-22 2019-02-20 Pumpe mit abstreif-finger
PL19158280T PL3530960T3 (pl) 2018-02-22 2019-02-20 Pompa z palcem zgarniającym

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1870195A FR3078116B1 (fr) 2018-02-22 2018-02-22 Pompe a doigt

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP21213941.4A Division EP4006356B1 (de) 2018-02-22 2019-02-20 Pumpe mit abstreif-finger
EP21213941.4A Division-Into EP4006356B1 (de) 2018-02-22 2019-02-20 Pumpe mit abstreif-finger

Publications (2)

Publication Number Publication Date
EP3530960A1 EP3530960A1 (de) 2019-08-28
EP3530960B1 true EP3530960B1 (de) 2022-02-16

Family

ID=61913482

Family Applications (2)

Application Number Title Priority Date Filing Date
EP21213941.4A Active EP4006356B1 (de) 2018-02-22 2019-02-20 Pumpe mit abstreif-finger
EP19158280.8A Active EP3530960B1 (de) 2018-02-22 2019-02-20 Pumpe mit abstreif-finger

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP21213941.4A Active EP4006356B1 (de) 2018-02-22 2019-02-20 Pumpe mit abstreif-finger

Country Status (12)

Country Link
US (2) US10895267B2 (de)
EP (2) EP4006356B1 (de)
JP (1) JP2019143630A (de)
KR (1) KR20190101291A (de)
CN (1) CN110185655B (de)
AU (1) AU2019200954A1 (de)
BR (1) BR102019003250B1 (de)
CA (1) CA3032955A1 (de)
FR (1) FR3078116B1 (de)
PL (1) PL3530960T3 (de)
SA (1) SA119400481B1 (de)
ZA (1) ZA201901050B (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8048089B2 (en) 2005-12-30 2011-11-01 Edge Systems Corporation Apparatus and methods for treating the skin
EP3388006B1 (de) 2008-01-04 2020-03-04 Edge Systems LLC System zur hautbehandlung
US9056193B2 (en) 2008-01-29 2015-06-16 Edge Systems Llc Apparatus and method for treating the skin
EP2967633B1 (de) 2013-03-15 2018-04-25 Edge Systems LLC Vorrichtungen zur hautbehandlung
CA2971728A1 (en) 2014-12-23 2016-06-30 Edge Systems Llc Devices for treating the skin using a rollerball
US11603844B2 (en) * 2018-12-21 2023-03-14 Grundfos Holding A/S Centrifugal pump
WO2021025035A1 (ja) 2019-08-05 2021-02-11 住友重機械工業株式会社 ショベル
JP7276099B2 (ja) 2019-11-26 2023-05-18 株式会社鶴見製作所 無閉塞ポンプ
EP3988794B1 (de) * 2020-10-26 2024-07-31 Xylem Europe GmbH Laufradsitz mit einem führungszapfen für eine pumpe
EP4102080A1 (de) * 2021-06-08 2022-12-14 Xylem Europe GmbH Pumpe und hydraulikeinheit einer pumpe
JP2023016327A (ja) 2021-07-21 2023-02-02 株式会社荏原製作所 ポンプケーシングおよびポンプ
USD1016615S1 (en) 2021-09-10 2024-03-05 Hydrafacial Llc Container for a skin treatment device
CA3237788A1 (en) * 2021-10-04 2023-04-13 KSB SE & Co. KGaA Centrifugal pump having wear-resistant wear plate with scraper element
USD1042807S1 (en) 2021-10-11 2024-09-17 Hydrafacial Llc Skin treatment tip

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Publication number Priority date Publication date Assignee Title
FR1511657A (fr) 1966-12-23 1968-02-02 Pierre Mengin Ets Perfectionnements aux pompes dilacératrices
DE10204459A1 (de) * 2002-02-05 2003-08-07 Bosch Gmbh Robert Flüssigkeitspumpe
SE524048C2 (sv) * 2002-04-26 2004-06-22 Itt Mfg Enterprises Inc Anordning vid pump
DE102004058458B3 (de) * 2004-12-03 2006-05-18 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Pumpe mit Schneidlaufrad
SE0501382L (sv) * 2005-06-17 2006-06-13 Itt Mfg Enterprises Inc Pump för pumpning av förorenad vätska
SE531147C2 (sv) * 2007-05-15 2009-01-07 Itt Mfg Enterprises Inc Dränkbar centrifugalpump med normal- och uttömningsdrifttillstånd
TW201118254A (en) * 2009-11-25 2011-06-01 Sunny King Machinery Co Ltd Anti-turbulent structure for screw pump
CN102536835B (zh) * 2012-03-21 2014-04-09 江苏大学 固液两相流螺旋离心泵
WO2014024305A1 (ja) * 2012-08-10 2014-02-13 三菱電機株式会社 プロペラファン、並びに、それを備えた送風機、空気調和機及び給湯用室外機
EP3223880A4 (de) * 2014-11-26 2018-07-18 Tc1 Llc Pumpe und verfahren zum pumpen eines gemischten blutstroms
KR101832131B1 (ko) * 2015-10-26 2018-02-26 주식회사 경동나비엔 보일러용 펌프
CN105697269A (zh) * 2016-01-24 2016-06-22 况常松 节能高效环保加油机泵
ES2716620T3 (es) 2016-05-17 2019-06-13 Xylem Europe Gmbh Bomba para bombear líquido así como conjunto de impulsor

Also Published As

Publication number Publication date
PL3530960T3 (pl) 2022-06-13
EP4006356B1 (de) 2024-10-16
SA119400481B1 (ar) 2021-12-13
FR3078116B1 (fr) 2021-09-10
US10895267B2 (en) 2021-01-19
ZA201901050B (en) 2024-07-31
EP3530960A1 (de) 2019-08-28
FR3078116A1 (fr) 2019-08-23
KR20190101291A (ko) 2019-08-30
BR102019003250B1 (pt) 2024-01-16
CN110185655A (zh) 2019-08-30
RU2019104420A (ru) 2020-08-18
US20210040957A1 (en) 2021-02-11
US20190257320A1 (en) 2019-08-22
AU2019200954A1 (en) 2019-09-05
CA3032955A1 (fr) 2019-08-22
BR102019003250A2 (pt) 2019-09-10
CN110185655B (zh) 2022-06-17
JP2019143630A (ja) 2019-08-29
EP4006356A1 (de) 2022-06-01

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