EP3578816A1 - Pompe de réservoir destinée au transport des liquides combustibles et/ou agressifs - Google Patents

Pompe de réservoir destinée au transport des liquides combustibles et/ou agressifs Download PDF

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Publication number
EP3578816A1
EP3578816A1 EP18176804.5A EP18176804A EP3578816A1 EP 3578816 A1 EP3578816 A1 EP 3578816A1 EP 18176804 A EP18176804 A EP 18176804A EP 3578816 A1 EP3578816 A1 EP 3578816A1
Authority
EP
European Patent Office
Prior art keywords
plastic material
container
pump
container pump
liquid
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.)
Pending
Application number
EP18176804.5A
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German (de)
English (en)
Inventor
Tobias Jessberger
Harry Langer
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.)
Dr Jessberger GmbH
Original Assignee
Dr Jessberger GmbH
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 Dr Jessberger GmbH filed Critical Dr Jessberger GmbH
Priority to EP18176804.5A priority Critical patent/EP3578816A1/fr
Publication of EP3578816A1 publication Critical patent/EP3578816A1/fr
Pending 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B33/00—Pumps actuated by muscle power, e.g. for inflating
    • 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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. valves
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump

Definitions

  • the present invention relates to a container pump for conveying combustible and / or aggressive liquids, comprising a dip tube for conveying the liquid wherein all or at least a part of the liquid in contact parts of the container pump comprise a plastic material or consist of a plastic material, the one according to DIN EN 61340-2-3: 2017-05 has a specific surface resistivity of less than or equal to 10 5 ⁇ .
  • the present invention also relates to a use of a plastic material with a specified according to DIN EN 61340-2-3: 2017-05 specific surface resistance of less than or equal to 10 5 ⁇ for the production of container pumps.
  • Container pumps for example barrel pumps based on the principle of the vertical centrifugal pump or manual hand-barrel pumps for conveying liquids, are already known from the prior art.
  • a barrel pump is described with a piston, wherein the piston is connected by a rod with a crank arm mounted on a pivot pin and the movement of the piston can be done by turning a hand crank attached to the pin.
  • An electrically driven drum pump is described which is suitable for conveying oil, gasoline and other chemical fluids from iron drums.
  • the barrel pump is for the first time designed so that the pump is assembled with the engine to a closed unit and the closed unit is sealed so that no liquids or gases can enter the engine compartment.
  • the pump body consists of two nested tubes, in the inner space of a drive shaft and in the outer space immediately above the liquid inlet opening serving a conveying member is housed.
  • the components of the container pump in particular the pumping station, must have a corresponding configuration.
  • a sufficiently high chemical resistance to the liquid must be ensured.
  • the container pump - and in particular the pumping station - must be designed in such a way that static electricity and any electrostatic discharge that may result, which can ignite the flammable liquid, is prevented.
  • container pumps which should have both high chemical resistance and sufficient electrical conductivity, have been made of a nickel-molybdenum alloy (e.g., Hastelloy B) or a nickel-chromium-molybdenum alloy (e.g., Hastelloy C).
  • a nickel-molybdenum alloy e.g., Hastelloy B
  • a nickel-chromium-molybdenum alloy e.g., Hastelloy C
  • a disadvantage of the metal alloys mentioned is firstly the high price and secondly the high density of the materials and the resulting high weight of the container pump.
  • container pumps are usually mobile pumps, they should also have a low weight, so that they can easily be moved from one place of use to the other place of use, or it is simply possible to change the container.
  • a container pump for conveying combustible and / or aggressive liquids comprising a dip tube for conveying the liquid, wherein all or at least part of the parts in contact with the liquid of the container pump comprise a plastic material or consist of a plastic material , which has a specific surface resistance of less than or equal to 10 5 ⁇ , determined according to DIN EN 61340-2-3: 2017-05.
  • container pumps according to the invention have a high chemical resistance and, depending on the material configuration, both for aggressive liquids, such as, for example, sulfuric acid, phosphoric acid, Nitric acid, acid mixtures of sulfuric acid and oxidizing acids with chloride ions, as well as for combustible media, such as gasoline, solvents or paints and varnishes, can be used.
  • aggressive liquids such as, for example, sulfuric acid, phosphoric acid, Nitric acid, acid mixtures of sulfuric acid and oxidizing acids with chloride ions, as well as for combustible media, such as gasoline, solvents or paints and varnishes.
  • electrostatic charge can be avoided if the specific surface resistance of the pump parts is less than or equal to 10 5 ⁇ and the electrostatic charge resulting from the flow through of the liquid can be dissipated.
  • the weight of the container pump can be reduced because plastic has a density that is about one-tenth less than the density of metals or metal alloys such as Hastelloy.
  • the plastic material has a surface resistivity of not more than 5x10 4 ⁇ , preferably of less than or equal to 10 4 ⁇ , more preferably less than or equal 5x10 3 ⁇ has.
  • a container pump wherein the plastic material coming into contact with the liquid comprises a polymer selected from the group consisting of polypropylene (PP), polyethylene (PE), polyvinylidene fluoride (PVDF), ethylene-chlorotrifluoroethylene-fluorocopolymer (ECTFE), polytetrafluoroethylene (PTFE), perfluoroalkoxy polymer (PFA), polyoxymethylene (POM), polyamide (PA), polyetheretherketone (PEEK) and mixtures thereof.
  • PP polypropylene
  • PE polyethylene
  • PVDF polyvinylidene fluoride
  • ECTFE ethylene-chlorotrifluoroethylene-fluorocopolymer
  • PTFE polytetrafluoroethylene
  • PFA perfluoroalkoxy polymer
  • POM polyoxymethylene
  • PA polyamide
  • PEEK polyetheretherketone
  • a container pump wherein the plastic material coming into contact with the liquid comprises a filling material, preferably selected from the group consisting of carbon fibers, carbon nanotubes, activated carbon and electrically conductive materials.
  • a container pump according to the invention is particularly preferred, in which the weight fraction of the filler in the plastic material is 5 to 40 wt .-%, preferably 10 to 30 wt .-%, particularly preferably 15 to 25 wt .-%, based on the total weight of the plastic material.
  • a container pump is preferred, wherein the container pump is a container pump operated by means of an electric or pneumatic motor or a hand-operated container pump.
  • Particularly preferred according to the invention is a container pump, wherein the container pump is a drum pump.
  • Particularly preferred according to the invention is a container pump, the liquid being selected from the group consisting of organic solvents, gasoline, kerosine, hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid, chlorine solution, acid mixtures of sulfuric acid and oxidizing acids with chloride ions (not exhaustive).
  • both aggressive and flammable liquids can be conveyed with the container pump and the container pump can be designed so that it is suitable to promote several of the liquids listed below - this list is not exhaustive - organic solvents, Gasoline, kerosene, hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid, chlorine solution, acid mixtures of sulfuric acid and oxidizing acids with chloride ions.
  • liquids can be promoted, which are both aggressive and flammable or it can be promoted with the container pump alternately aggressive and flammable liquids.
  • a container pump in addition comprising an inner tube arranged in the immersion tube and a pump rotor driven via a drive shaft extending in the inner tube, is received in the space between the dip tube and inner tube via an inlet opening and by driving between the outer tube through the pump rotor and inner tube space is conveyed to an outlet opening.
  • a container pump comprising an inner tube arranged in the immersion tube and a pump rotor driven via a drive shaft extending in the inner tube, wherein the liquid is taken up via an inlet opening into the space located between dip tube and inner tube and by driving the pump rotor through the between outer tube and inner tube space is conveyed to an outlet opening, wherein all or at least a part of the parts in contact with the liquid of the container pump, in particular dip tube, inner tube and / or pump rotor, comprise a plastic material or consist of a plastic material, the one according to DIN EN 61340-2-3: 2017-05 certain having a surface resistivity of less than or equal to 10 5 ⁇ , wherein the plastic material in contact with the liquid comprises a polymer selected from the group consisting of polypropylene (PP), polyethylene (PE), polyvinylidene fluoride (PVDF), ethylene-chlorotrifluoroethylene fluorocopolymer (ECTFE), polytetrafluoroethylene (PTPP), polypropylene (
  • a container pump is preferred, with all the electrically conductive components which are to lead to a discharge of electrostatic charge being connected to one another in an electrically conductive manner.
  • a container pump is preferred, wherein the container pump has an arrangement for grounding the container pump, which is preferably electrically conductively connected to all parts of the container pump that are in contact with the liquid.
  • Another aspect of the present invention relates to a use of a plastic material with a specified according to DIN EN 61340-2-3: 2017-05 specific surface resistance of less than or equal to 10 5 ⁇ for the production of container pumps.
  • container pumps are container pumps operated by an electric or pneumatic motor, manually operated container pumps or compressed air container pumps.
  • a use according to the invention is preferred, wherein the plastic material has a surface resistivity of not more than 5x10 4 ⁇ , preferably of less than or equal to 10 4 ⁇ , more preferably less than or equal 5x10 3 ⁇ has.
  • the plastic material coming in contact with the liquid comprises a polymer selected from the group consisting of polypropylene (PP), polyethylene (PE), polyvinylidene fluoride (PVDF), ethylene-chlorotrifluoroethylene-fluorocopolymer (ECTFE), polytetrafluoroethylene (PTFE), perfluoroalkoxy polymer (PFA), polyoxymethylene (POM), polyamide (PA), polyetheretherketone (PEEK) and mixtures thereof.
  • PP polypropylene
  • PE polyethylene
  • PVDF polyvinylidene fluoride
  • ECTFE ethylene-chlorotrifluoroethylene-fluorocopolymer
  • PTFE polytetrafluoroethylene
  • PFA perfluoroalkoxy polymer
  • POM polyoxymethylene
  • PA polyamide
  • PEEK polyetheretherketone
  • the plastic material coming into contact with the liquid comprises a filling material, preferably selected from the group consisting of carbon fibers, carbon nanotubes, activated carbon and electrically conductive materials.
  • a container pump according to the invention preferably several of the aspects of a container pump according to the invention designated above as preferred are realized in the use according to the invention. This applies in particular to the design and the properties of the plastic material and the configuration of the container pump, which is preferably a container pump operated by means of an electric or pneumatic motor or a hand-operated container pump.
  • FIG. 1 an exploded view of a part, namely a pumping station, a container pump according to the invention.
  • FIG. 1 shows an exploded view of a pumping station of a container pump according to the invention.
  • the pumping station comprises a dip tube (1) having an external thread at the upper end and an internal thread (not shown) at the lower end.
  • the dip tube can be screwed into a discharge piece (9), which has a corresponding internal thread.
  • the outlet piece comprises an outlet opening, to which, for example, a hose connector (8) can be fastened by means of a winged union nut (7).
  • a pump housing (2) can be screwed.
  • the pump housing (2) comprises a bearing for the drive shaft (10).
  • the bearing is usually designed as a carbon storage.
  • a pump foot (4) can be threaded.
  • the pump base is designed such that the liquid to be conveyed can be drawn in via an inlet opening, even if the pump foot rests on the container bottom.
  • the pumping station additionally comprises an inner tube (6) arranged in the immersion tube (1) and a pumping rotor (3) driven via a drive shaft (10) extending in the inner tube (6), wherein the liquid flows through an inlet opening into the immersion tube (1) and Inner space (6) is received and is conveyed by driving the Pumprotors (3) through the space between the outer tube (2) and the inner tube (6) space to an outlet.
  • a plastic tube (5) here a PTFE tube, between the drive shaft (10) and inner tube (6) can be arranged.
  • the drive shaft (10) is mounted on a bearing unit (10) and can be coupled via the pumping gear coupling (13) to a drive.
  • the drive may be a pneumatic or electric motor.
  • Manual tank pumps on the other hand, are manually driven and can be used as a piston pump, rotary pump or overpressure pump be designed (not shown).
  • the outlet piece (9) can be attached via the handwheel (15) to the drive or the housing of the drive, wherein the snap ring (14) secures the connection and seals the seal (11) between the dip tube and the drive.
  • the dip tube (1), the pump housing (2), the pump rotor (3), the pump base (4), the inner tube (6), the hose connector (8), the wing cap nut (7), the outlet piece (9), the drive shaft (10), and the handwheel (15) made of a plastic material having a specific surface resistance of less than or equal to 10 5 ⁇ determined according to DIN EN 61340-2-3: 2017-05 ,
  • the drive shaft of the container pumps is made of stainless steel 1.14571 or Hastelloy C-2.4610.
  • the plastic material is a plastic material having polytetrafluoroethylene as a polymer and carbon fibers as a filler, wherein the weight fraction of the filler in the plastic material is 20 wt .-%, based on the total weight of the plastic material.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP18176804.5A 2018-06-08 2018-06-08 Pompe de réservoir destinée au transport des liquides combustibles et/ou agressifs Pending EP3578816A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18176804.5A EP3578816A1 (fr) 2018-06-08 2018-06-08 Pompe de réservoir destinée au transport des liquides combustibles et/ou agressifs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18176804.5A EP3578816A1 (fr) 2018-06-08 2018-06-08 Pompe de réservoir destinée au transport des liquides combustibles et/ou agressifs

Publications (1)

Publication Number Publication Date
EP3578816A1 true EP3578816A1 (fr) 2019-12-11

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ID=62597367

Family Applications (1)

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EP18176804.5A Pending EP3578816A1 (fr) 2018-06-08 2018-06-08 Pompe de réservoir destinée au transport des liquides combustibles et/ou agressifs

Country Status (1)

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EP (1) EP3578816A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH30991A (de) 1904-08-10 1905-02-15 Ferdinand Bethaeuser Faßpumpe
DE1645870U (de) 1952-07-07 1952-10-23 Oberndorf Neckar Paegert K G M Elektrisch angetriebene fasspumpe.
DE1671090U (de) 1951-08-06 1954-01-28 Niklaus Laing Elektrische fasspumpe.
DE2607384A1 (de) * 1976-02-24 1977-08-25 Lutz Fa Karl Kreiselpumpe, insbesondere tauchpumpe
DE3221329A1 (de) * 1982-06-05 1983-12-08 Vereinigte Kunststoff-Pumpen GmbH, 5439 Rennerod Vorrichtung zur foerderung von chemisch aggressiven fluessigkeiten
DE19915258C1 (de) 1999-04-03 2000-12-07 Bosch Gmbh Robert Gehäuse für eine mit einem Elektromotor angetriebene Förderpumpe
EP1497188B1 (fr) 2002-04-23 2005-09-28 MAUSER-WERKE GmbH & Co. KG Contenant en plastique
WO2006019942A2 (fr) 2004-07-22 2006-02-23 Integral Technologies, Inc. Pompes exemptes de decharges electrostatiques economiques faites de resines chargees de materiaux conducteurs
DE102005046306B3 (de) 2005-09-27 2006-10-26 Munsch Chemie-Pumpen Gmbh Behältnis aus schweißbarem, nicht leitendem Kunststoff, welches in einer explosionsgefährdeten Umgebung eingesetzt wird
DE102010043472A1 (de) * 2010-11-05 2012-05-10 Evonik Goldschmidt Gmbh Zusammensetzung aus Polymeren und elektrisch leitfähigem Kohlenstoff
WO2014202724A1 (fr) * 2013-06-19 2014-12-24 Igp Pulvertechnik Ag Procédé de revêtement d'une surface d'un substrat électriquement non conducteur au moyen de peintures en poudre
DE202015101689U1 (de) * 2015-04-02 2016-01-20 Flaco-Geräte GmbH Tankanlage

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH30991A (de) 1904-08-10 1905-02-15 Ferdinand Bethaeuser Faßpumpe
DE1671090U (de) 1951-08-06 1954-01-28 Niklaus Laing Elektrische fasspumpe.
DE1645870U (de) 1952-07-07 1952-10-23 Oberndorf Neckar Paegert K G M Elektrisch angetriebene fasspumpe.
DE2607384A1 (de) * 1976-02-24 1977-08-25 Lutz Fa Karl Kreiselpumpe, insbesondere tauchpumpe
DE3221329A1 (de) * 1982-06-05 1983-12-08 Vereinigte Kunststoff-Pumpen GmbH, 5439 Rennerod Vorrichtung zur foerderung von chemisch aggressiven fluessigkeiten
DE19915258C1 (de) 1999-04-03 2000-12-07 Bosch Gmbh Robert Gehäuse für eine mit einem Elektromotor angetriebene Förderpumpe
EP1497188B1 (fr) 2002-04-23 2005-09-28 MAUSER-WERKE GmbH & Co. KG Contenant en plastique
WO2006019942A2 (fr) 2004-07-22 2006-02-23 Integral Technologies, Inc. Pompes exemptes de decharges electrostatiques economiques faites de resines chargees de materiaux conducteurs
DE102005046306B3 (de) 2005-09-27 2006-10-26 Munsch Chemie-Pumpen Gmbh Behältnis aus schweißbarem, nicht leitendem Kunststoff, welches in einer explosionsgefährdeten Umgebung eingesetzt wird
DE102010043472A1 (de) * 2010-11-05 2012-05-10 Evonik Goldschmidt Gmbh Zusammensetzung aus Polymeren und elektrisch leitfähigem Kohlenstoff
WO2014202724A1 (fr) * 2013-06-19 2014-12-24 Igp Pulvertechnik Ag Procédé de revêtement d'une surface d'un substrat électriquement non conducteur au moyen de peintures en poudre
DE202015101689U1 (de) * 2015-04-02 2016-01-20 Flaco-Geräte GmbH Tankanlage

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
"GUV-Regel - Vermeidung von Zündgefahren infolge elektrostatischer Aufladungen", GUV-R 132 (BISHER GUV 19.7) - REGELN FUR SICHERHEIT UND GESUNDHEITSSCHUTZ, 1 January 2005 (2005-01-01), pages 1 - 136, XP007905584
ANONYMOUS: "Professionelles Fluidmanagement Katalog 2003/2004", LUTZ- PUMPEN GMBH & CO. KG, 1 February 2003 (2003-02-01), pages 5, 13, XP093015354
ANONYMOUS: "QC-System - ein Produkt der AS Stromungstechnik GmbH", TECHNISCHE INFORMATION, 1 December 2017 (2017-12-01), pages 1 - 17, XP055890084
ANONYMOUS: "Tauchrohr (QC-Behalterverschluss) fur die Aufnahme von Connectoren", DATA SHEET, 1 December 2017 (2017-12-01), XP055890075
HIMSTEDT MATTHIAS, HORST KRÜGER UND STEFAN TREIBER: "Praxisorientierte ATEX-Bewertung von Fasspumpen der Kategorie 1", TECHNISCHE SICHERHEIT, vol. 2, no. 7/8, 1 January 2012 (2012-01-01), pages 22 - 25, XP093015361
VDE: "DIN EN 61340-2-3 (VDE 0300-2-3):2017-05", 1 May 2017 (2017-05-01), XP055508481, Retrieved from the Internet <URL:https://www.vde-verlag.de/previewpdf/70300080.pdf> [retrieved on 20180920] *

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