EP3225843B1 - Pompe à boue - Google Patents

Pompe à boue Download PDF

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Publication number
EP3225843B1
EP3225843B1 EP16162861.5A EP16162861A EP3225843B1 EP 3225843 B1 EP3225843 B1 EP 3225843B1 EP 16162861 A EP16162861 A EP 16162861A EP 3225843 B1 EP3225843 B1 EP 3225843B1
Authority
EP
European Patent Office
Prior art keywords
flange
blocks
slurry pump
casing
protective cover
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
EP16162861.5A
Other languages
German (de)
English (en)
Other versions
EP3225843A1 (fr
Inventor
Marc Tijssen
Ewout Arjen van Duursen
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.)
Damen Dredging Equipment BV
Original Assignee
Damen Dredging Equipment BV
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 Damen Dredging Equipment BV filed Critical Damen Dredging Equipment BV
Priority to EP16162861.5A priority Critical patent/EP3225843B1/fr
Publication of EP3225843A1 publication Critical patent/EP3225843A1/fr
Application granted granted Critical
Publication of EP3225843B1 publication Critical patent/EP3225843B1/fr
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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of 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
    • 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
    • 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
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/601—Fabrics

Definitions

  • the present invention pertains to a slurry pump for pumping a liquid and solid particle material, comprising a casing which accommodates a drivable impeller and includes a suction inlet and an outlet, and protection means for protecting the environment against leakage of liquid or ejection of fragments of the casing in case of damage thereof.
  • a slurry pump in the form of a dredge pump including protection means is known in the field of dredging vessels with on-board dredge pumps which are used for sucking slurry of sand, gravel and so forth from the bottom of the sea, lake, river or the like.
  • a dredging vessel often has a suction tube and a cutting mechanism located nearby an inlet of the suction tube. The cutting mechanism loosens the bed material, after which it is transported to the inlet of the suction tube.
  • the dredging vessel may also have a suction tube and drag head with or without jet water which loosens the bed material, like a Trailing Suction Hopper Dredger.
  • Dredged material may comprise solid abrasive pieces such as sand, stones or the like.
  • sand, stones or the like When such materials are thrown against the inner surfaces of the casing by the impeller, they cause considerable wear to the inner parts of the pump. This may result in weak areas of the casing at a certain moment the casing may be worn such that it starts leaking liquid. Consequently, the casing must be replaced.
  • the dredged material may also contain unexploded ordnance like grenades, bombs, shells and mines that did not explode when they were employed, but may detonate upon entering the dredge pump or when hitting the impeller or after being accelerated by the impeller. If this happens, the casing, which is generally made of cast iron, will be damaged and fragments of the casing may be ejected. When the dredge pump is placed in a closed room or a box this functions as a protection means for reducing the risk of damage to personnel and equipment in the environment of the pump.
  • JP 2013 092049 is related to a slurry pump including a casing having an inlet and an outlet of slurry and covering an impeller rotating in an inner chamber to which the inlet and the outlet are connected; and a waterproof film coating the outer surface of the casing.
  • the waterproof film is constituted of a net-like first film for covering a surface of the casing and a waterproof second film for coating the film on the first film, and discharges leaked water in the casing to the outside from a gap between the casing and the first film.
  • EP 1 972 788 is related to a centrifugal pump, comprising an outer casing, an inner casing contained in the outer casing, an impeller rotatably supported within the inner casing, an outer casing inlet concentrically arranged with respect to the impeller as well as a tangential outlet, said outer casing comprising a cup shaped part as well as a cover part mounted onto the cup shaped part.
  • the cover part comprises a single element which extends as a unity continuously between the cup shaped part and the outer casing inlet.
  • US 5,437,538 is related to an improved blade containment structure including a projectile shield having a braided ballistic fabric.
  • the braided fabric includes ballistic strands arranged in a preferred orientation and is effective for increasing the ability of the fabric to contain projectiles and absorb energy therefrom.
  • the braided ballistic fabric provides substantial improvement in performance over conventional woven ballistic fabrics.
  • the cover is wrapped around the casing, or enfolds the casing, provides the opportunity to create a close fitting of the cover about the casing. Any empty and unused space such as in case of a conventional protective box of solid plates around the pump can be omitted. Furthermore, a relatively small or no distance between the casing and the protective cover may improve the absorption characteristics of the impact of ejected fragments.
  • the slurry pump including the protective cover can be assembled before transporting the pump to a dredging vessel, which reduces installation work on board. On the other hand, some space between the casing and the protective cover may be desired in order to receive gas from an explosion. It is noted that the wrapped protective cover minimizes additional weight. Since the protective cover can protect the environment against leakage of liquid the cover is preferably made of a watertight material. An advantage of the invention is that the pump can be used until it starts leaking instead of replacing the casing preventively.
  • the cover may comprise a flexible fabric. This means that the cover is flexible under operating conditions. Since the cover is wrapped around the casing it is always flexible upon wrapping it around the casing, but in an alternative embodiment the cover may be cured such that it is solid or semi-solid under operating conditions.
  • the cover may comprise a textile or a woven fabric.
  • the tenacity of these materials provide a great resistance against impact of ejected fragments of the casing. Due to the woven structure of filaments, fibres, yarns or the like, energy absorption of an impact is distributed in width direction of the cover. Therefore, similar materials are applied in the field of bulletproof vests, for example.
  • the fabric may comprise fibres, for example plastic fibres made of polyethylene or the like. It is conceivable that the fabric comprises a plurality of layers of woven or laminated fibres, but three-dimensional weaving with fibres connecting flat wovens together into a 3D system is also possible.
  • the cover may comprise a plurality of layers wherein the outer layer may be made of a fire-resistant and/or waterproof material.
  • the outer layer may be made of a fire-resistant and/or waterproof material.
  • a part of the plurality of layers may be waterproof PVC sheets.
  • the layers may be adhered to each other, but it is also possible that the layers are separate from each other and are only fixed to each other at theirs side edges.
  • the impeller is coupled to an impeller drive shaft which leaves the casing at a drive shaft side as seen from the impeller, and the protective cover is attached to the casing through holding members at the suction inlet, at the outlet and the drive shaft side. It is conceivable that the protective cover is attached to the casing through holding members which are only located at the suction inlet, at the outlet and the drive shaft side, whereas the remainder of the protective cover is free from the casing or only contacting the casing.
  • At least one of the holding members comprises a flange and a clamp for clamping the protective cover between the clamp and the flange.
  • the clamp is formed of a plurality of blocks which are mountable to the flange in circumferential direction thereof.
  • the blocks may be wedge-shaped such that the space between two neighbouring blocks is minimized. Nevertheless, some space between the blocks may be desired in order to provide room for creases in the protective cover.
  • the blocks may be separate units in order to make installation relatively simply.
  • Each of the blocks is provided with a cavity at its side facing the flange which may be arranged such that after mounting the blocks on the flange the cavities form a ring-shaped channel between the blocks and the flange for receiving a thickened end portion of the cover.
  • the protective cover at the flange is folded about a string hence forming a hem with the string therein, wherein at least a part of the hem including the distance between the pressure elements reduces and the crease will automatically be hold stronger between the neighbouring blocks.
  • the pressure elements may be movable outside the crease flattener, for example along opposite sides thereof.
  • Figs. 1-7 show different views of a slurry pump 1 without a protective cover
  • Figs. 8-11 show different views of an embodiment of the slurry pump 1 including a protective cover 2 according to the invention.
  • Figs. 3-7 and Figs. 8-12 are views from the same respective sides, showing the embodiment of the slurry pump 1 without and with the protective cover 2, respectively.
  • the slurry pump 1 including the cover 2 can be installed on board of a dredging vessel (not shown).
  • a dredging vessel is provided with a suction tube and a cutting mechanism located nearby an inlet of the suction tube.
  • the cutting mechanism loosens the bed material of a sea bed, a river bed or a lake bed, for example, and a mixture of solids and water is then sucked up by the slurry pump 1 via the suction tube.
  • the slurry pump 1 according to the invention is not limited to dredging applications, but is also suitable for pumping liquid and solid particle mixtures in other fields, for example in the mining industry.
  • the slurry pump 1 as shown in the figures is a centrifugal pump and has a casing 3 which accommodates an impeller (not shown).
  • the impeller has an impeller shaft which is supported by bearings, located in a bearing housing.
  • the impeller shaft is driven by an electric motor 4.
  • the impeller shaft may be driven by alternative driving means such as an internal combustion engine, hydraulic motor or the like, possibly via a transmission.
  • the casing 3 has a suction inlet 5 and a tangentially oriented outlet 6.
  • the casing 3 comprises a volute or cup shaped part 3a and a substantially flat impeller lid 3b which is bolted to the cup shaped part 3a at the side of the pump 1 where the suction inlet 5 is located.
  • the impeller lid 3b is removable in order to easily reach the impeller in case of maintenance or replacement of a worn impeller.
  • the impeller shaft leaves the casing 3.
  • the slurry or dredged material may also contain unexploded ordnance like grenades and bombs which may detonate upon entering the slurry pump 1 such that the casing 3 will be damaged and fragments of the casing 3 will be ejected.
  • the cover 2 in the embodiment as shown in Figs. 8-12 comprises a flexible fabric which is wrapped around the casing 3.
  • the cover 2 is made of a woven fabric and comprises plastic fibres, for example para-aramid synthetic fibre known under the registered trademarks Kevlar or Twaron or polyethylene fibre under the registered trademarks Dyneema or Spectra. Such fibres are also used for manufacturing bulletproof vests, for example. Nevertheless, alternative fibres are possible.
  • the protective cover as shown in Figs. 8-12 forms a bag which surrounds the casing 3 and which comprises three holes at the suction inlet 5, the outlet 6 and the side of the casing 3 where the electric motor 4 is located. At these locations the protective cover 2 is attached to the casing 3.
  • the casing 3 is provided with an outlet flange 7 at the outlet 6, see Fig. 14 .
  • the protective cover 2 is clamped to the outlet flange 7 by a counter outlet flange 8, as illustrated in Figs. 8-12 .
  • the counter outlet flange 8 comprises three portions which are bolted to each other. One of the three portions is shown in Fig. 19 .
  • Fig. 21 shows in cross-section how the protective cover 2 is clamped between the outlet flange 7 and the counter outlet flange 8. It is noted that there are numerous alternative means for fixing the protective cover 2 to the outlet 6.
  • FIGs. 15 and 16 show that an inlet flange 9 is mounted at the suction inlet 5 and an impeller shaft flange 10 is mounted at the side of the casing 3 facing the electric motor 4.
  • Figs. 13 and 14 which are similar views as Figs. 15 and 16 , but in which the inlet flange 9 and the impeller shaft flange 10 are not shown.
  • the inlet flange 9 is mounted to the casing 3 by means of welding whereas the impeller shaft flange 10 is bolted to the casing 3.
  • the protective cover 2 can be fixed at the inlet flange 9 and at the impeller shaft flange 10 by means of wedge-shaped blocks 13 which are bolted to the respective flanges 9, 10.
  • Each of the blocks 13 is provided with a cavity 14, see Figs. 17 and 18 . After installing all blocks 13 the cavities 14 form a ring-shaped channel between the blocks 13 and the respective flanges 9, 10.
  • Fig. 20 shows how the protective cover 2 is fixed at the inlet flange 9.
  • the protective cover 2 is fixed to the impeller shaft flange 10 in the same way. It can be seen in Fig. 20 that the protective cover 2 at its end edge is provided with a hem 11 with a string 12 therein which is accommodated in the mating cavity 14 of the wedge-shaped blocks 13. The string 12 and a portion of the hem 11 are clamped between the blocks 13 and the respective flanges 9, 10.
  • the hem can be made by means of sewing or gluing or the like.
  • Figs. 11 and 12 illustrate that creases 15 in the protective cover 2 are present at the inlet flange 9 and the impeller shaft flange 10.
  • the creases 15 arise since the surface for fixing the protective cover 2 at the inlet flange 9 is smaller than the surface of the protective cover 2 at that location.
  • the creases 15 may protrude outwardly and clamped between respective neighbouring wedge-shaped blocks 13.
  • the blocks 13 at the inlet flange 9 can be loosened and the protective cover 2 can be folded backwards in order to provide access to the bolts of the impeller lid 3b so as to be able to remove the lid 3b.
  • Fig. 22 shows an alternative slurry pump 1 and Fig. 23 shows a part of the pump 1 at the suction inlet 5.
  • the pump 1 is depicted without the protective cover 2.
  • This embodiment has different holding members or blocks 13 than the embodiment as described above.
  • the suction inlet 5 is provided with twelve blocks 13.
  • Fig. 24 shows different views of one of the blocks 13.
  • the block 13 has also a wedge-shape as seen from above and comprises a cavity 14, as well.
  • the cavities 14 form a ring-shaped channel between the blocks 13 and the inlet flange 9 for receiving the string 12 enveloped by the protective cover 2.
  • Each of the blocks 13 is mounted to the inlet flange 9 via a threaded pin 16 running through a through-hole 17 in the block 13 and fixed thereto by a nut, in a similar way as the blocks 13 in the previous embodiment.
  • creases 15 of the protective cover 2 are present between neighbouring blocks 13.
  • the creases 15 are flattened by means of crease flatteners 18 such that the protective cover 2 forms a watertight sealing.
  • Figs. 22 and 23 show that the crease flatteners 18 are located between each two neighbouring blocks 13.
  • the crease flattener 18 has a wedge shape and fits between two neighbouring blocks 13 which can be observed in Fig. 23 .
  • Each of the crease flatteners 18 is pressed onto a crease 15 by means of a crease flattener bolt 19 which is screwed in a tapped hole 20 of a fitting plate 21, see Fig.
  • the fitting plate 21 is mounted on two neighbouring blocks 13 by means of fitting plate bolts 23, see Figs. 22 and 23 .
  • the fitting plate bolts 23 are screwed in mating holes 29 in the blocks 12.
  • the crease flattener 18 is provided with lateral protrusions 24 which fit in mating recesses 25 of the adjacent blocks 13 such that the crease flatteners 18 are locked with respect to the blocks 13 in radial outward direction of the inlet flange 9.
  • Figs. 27 and 28 illustrate an assembled situation by cross-sectional views taken along a plane through the block 13 at the threaded pin 16 and the through-hole 17 and taken along a plane through the crease flattener 18, respectively.
  • Fig. 29 shows different views of a pressure element 26, which has a semi-circular cross-section.
  • Each block 13 is provided with two pressure elements 26 of which the curved portions face away from each other.
  • a crease 15 between two adjacent blocks 13 is flattened and clamped to the inlet flange 9 by the crease flattener 18, whereas the pressure elements 26 of two neighbouring blocks 13 prevent the protective cover 2 from moving out of the space between the blocks 13, the inlet flange 9 and the crease flattener 18 upon exerting a pulling force on the protective cover 2.
  • This is caused by the fact that the amount of material of the protective cover 2 in radial inward direction of the inlet flange 9 beyond the pressure elements 26 increases which increases resistance during displacement of the protective cover 2 in outward direction.
  • the pressure elements 26 are freely movable in radial outward direction of the inlet flange 9, since protrusions 27 at the back side of the pressure elements 26 slidably fit in cooperating rails 28 of the blocks 13.
  • the rails 28 of a block 13 are diverging in radial outward direction of the inlet flange 9. This means that upon a sudden pulling force on the protective cover 2, the cover 2 may pull the pressure elements 26 in radial outward direction such that the distance between neighbouring pressure elements 26 decreases. Consequently, it becomes still more difficult to move the crease 15 of the cover 2 in radial outward direction of the inlet flange 9.
  • Figs. 22-29 show the manner of fixing the protective cover 2 at the suction inlet 5, but a similar manner can be used for fixing the protective cover 2 at the impeller shaft flange 10.

Landscapes

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

Claims (10)

  1. Pompe à boue (1) pour pomper un mélange de particules liquides et solides, comprenant un corps (3) qui loge une turbine pouvant être entraînée et comporte un orifice d'entrée d'aspiration (5) et un orifice de sortie (6), et un moyen de protection (2) pour protéger l'environnement contre une fuite de liquide ou une éjection de fragments du corps (3) dans le cas où il est endommagé, dans laquelle le moyen de protection comprend un couvercle protecteur (2) qui est enroulé autour du corps (3), dans laquelle la turbine est accouplée à un arbre d'entraînement de turbine qui sort du corps (3) d'un côté arbre d'entraînement (10) vu depuis la turbine, caractérisée en ce que le couvercle protecteur (2) est attaché au corps (3) par le biais d'organes de maintien (7, 8, 9, 10, 13) au niveau de l'orifice d'entrée d'aspiration (5), au niveau de l'orifice de sortie (6) et du côté arbre d'entraînement (10), dans laquelle au moins l'un des organes de maintien comprend une bride (7, 9, 10) et une pince (8, 13) pour serrer le couvercle protecteur (2) entre la pince (8, 13) et la bride (7, 9, 10), dans laquelle la pince est formée d'une pluralité de blocs (13) qui peuvent être montés sur la bride (9, 10) en direction circonférentielle de celle-ci, dans laquelle chacun des blocs (13) est pourvu d'une cavité (14) de son côté en regard de la bride (9, 10) qui est agencée de sorte qu'après montage des blocs (13) sur la bride (9, 10), les cavités (14) forment un canal en forme d'anneau entre les blocs (13) et la bride (9, 10) pour recevoir une portion d'extrémité épaissie du couvercle (2).
  2. Pompe à boue (1) selon la revendication 1, dans laquelle le couvercle (2) comprend une étoffe flexible.
  3. Pompe à boue (1) selon la revendication 1 ou 2, dans laquelle le couvercle (2) comprend un textile.
  4. Pompe à boue (1) selon l'une des revendications précédentes, dans laquelle le couvercle (2) comprend une étoffe tissée.
  5. Pompe à boue (1) selon la revendication 4, dans laquelle l'étoffe comprend des fibres de plastique.
  6. Pompe à boue (1) selon l'une des revendications précédentes, dans laquelle le couvercle protecteur (2) au niveau de la bride (9, 10) est plié autour d'une ficelle (12) formant ainsi un bord rabattu (11) avec la ficelle (12) à l'intérieur, dans laquelle au moins une partie du bord rabattu (11) comportant la ficelle (12) est logée dans ledit canal en forme d'anneau.
  7. Pompe à boue (1) selon l'une des revendications précédentes, dans laquelle un aplatisseur de pli (18) est fixé entre deux blocs voisins (13), lequel aplatisseur de pli (18) appuie un pli (15) du couvercle protecteur (2) contre la bride (9, 10).
  8. Pompe à boue (1) selon la revendication 7, dans laquelle l'aplatisseur de pli (18) et les blocs (13) sont pourvus d'organes de blocage coopérants (24, 25) pour bloquer l'aplatisseur de pli (18) entre les blocs (13) dans une direction radiale de la bride (9, 10).
  9. Pompe à boue (1) selon l'une des revendications 7 et 8, dans laquelle chacun des blocs (13) est pourvu d'au moins deux éléments de pression (26), qui sont mobiles librement par rapport à la bride (9, 10) en direction extérieure radiale de celle-ci, dans laquelle les éléments de pression (26) de deux blocs voisins (13) sont en regard l'un de l'autre et un pli (15) du couvercle protecteur (2) s'étend entre les éléments de pression (26), dans laquelle les éléments de pression (26) en direction circonférentielle de la bride (9, 10) et des blocs (13) sont adaptés de sorte que la distance entre les éléments de pression (26) diminue lorsqu'on déplace les éléments de pression (26) en direction extérieure radiale de ceux-ci.
  10. Pompe à boue (1) selon les revendications 7 et 9, dans laquelle les éléments de pression (26) sont mobiles en dehors de l'aplatisseur de pli (18).
EP16162861.5A 2016-03-30 2016-03-30 Pompe à boue Active EP3225843B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16162861.5A EP3225843B1 (fr) 2016-03-30 2016-03-30 Pompe à boue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16162861.5A EP3225843B1 (fr) 2016-03-30 2016-03-30 Pompe à boue

Publications (2)

Publication Number Publication Date
EP3225843A1 EP3225843A1 (fr) 2017-10-04
EP3225843B1 true EP3225843B1 (fr) 2019-05-08

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108180170A (zh) * 2018-01-30 2018-06-19 河南省西峡汽车水泵股份有限公司 一种安装盖板的方法
CN111608918B (zh) * 2020-05-28 2021-03-26 陕西省环境保护公司 甲醇污水处理中污泥泵防堵塞装置

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Publication number Priority date Publication date Assignee Title
CA2042198A1 (fr) * 1990-06-18 1991-12-19 Stephen C. Mitchell Ecran protecteur contre les projectiles
JP4517483B2 (ja) * 2000-09-21 2010-08-04 東レ株式会社 複合強化繊維基材およびプリフォーム
US7018168B2 (en) * 2004-04-08 2006-03-28 General Electric Company Method and apparatus for fabricating gas turbine engines
EP1906029B1 (fr) * 2006-09-19 2009-12-16 IHC Holland IE B.V. Pompe centrifuge avec boîtier intérieur et extérieur
EP1972788B1 (fr) * 2007-03-23 2018-08-29 IHC Holland IE B.V. Carter de pompe avec couvercle unique et plate
CN101149066B (zh) * 2007-09-07 2012-05-23 山东东方天明机械制造有限公司 离心式渣浆泵叶轮调整间隙区冲刷降蚀工艺及其设备
JP2013092049A (ja) * 2011-10-24 2013-05-16 Ube Techno Enji Kk スラリーポンプ

Non-Patent Citations (1)

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Title
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