EP0861980B1 - Pompe fluidique avec alimentation et charge hydrodynamique - Google Patents

Pompe fluidique avec alimentation et charge hydrodynamique Download PDF

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Publication number
EP0861980B1
EP0861980B1 EP98103556A EP98103556A EP0861980B1 EP 0861980 B1 EP0861980 B1 EP 0861980B1 EP 98103556 A EP98103556 A EP 98103556A EP 98103556 A EP98103556 A EP 98103556A EP 0861980 B1 EP0861980 B1 EP 0861980B1
Authority
EP
European Patent Office
Prior art keywords
liquids
pump
hydrodynamic
container
der
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
EP98103556A
Other languages
German (de)
English (en)
Other versions
EP0861980A2 (fr
EP0861980A3 (fr
Inventor
Vasile-Adrian Bojan
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.)
Dipl-Ing Laempe Firma GmbH
Original Assignee
Dipl-Ing Laempe Firma GmbH
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26034433&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0861980(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE1997108418 external-priority patent/DE19708418A1/de
Application filed by Dipl-Ing Laempe Firma GmbH filed Critical Dipl-Ing Laempe Firma GmbH
Publication of EP0861980A2 publication Critical patent/EP0861980A2/fr
Publication of EP0861980A3 publication Critical patent/EP0861980A3/fr
Application granted granted Critical
Publication of EP0861980B1 publication Critical patent/EP0861980B1/fr
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
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
    • F04F1/10—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped of multiple type, e.g. with two or more units in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/06—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped
    • F04F1/14—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium acting on the surface of the liquid to be pumped adapted to pump specific liquids, e.g. corrosive or hot liquids

Definitions

  • the invention relates to a pump for conveying liquid media, which may be heavily contaminated with solids, according to the principle of valve-less hydrodynamic supply and discharge of the liquid media to be conveyed, to and from the pump body and specific application devices of the pump.
  • a pump for conveying liquid media which may be heavily contaminated with solids
  • the inventive pump is of preferred advantage.
  • the hydrodynamic principle of pumps is e.g. the pump without moving parts from the laid-open publication DE 41 26 384 A1 known.
  • the problem lies in special areas of application, for example are liquid media loaded with abrasive substances, in the area of Valve function and general material wear.
  • As a pump body are those of Suitable for double membrane types. Aside from the need for improvement The lifetime of the membrane material does not solve the Ventlip problem here either.
  • the hard rubber stator is used disproportionately quickly In the practice of the metal industry, when finishing raw cast parts or pickling of oxidation layers, the pump problem has so far been a permanent problem.
  • the object of the invention was to provide a pump with the associated hydrodynamic Provide master units that have the disadvantages of the prior art Technology overcomes, or only an advanced state of the art manufactures.
  • the guiding principle of the task was the surface treatment of metals which are produced in the casting process or in other thermal processes.
  • the surface treatment is often carried out in wet processes by so-called pickling or finishing.
  • the treatment fluids are often alkaline and therefore chemically aggressive, or they contain abrasive solids. Out practical considerations, it is therefore desirable that the treatment fluids get from the pump set to the treatment tank by the shortest route. If possible without valve shut-offs or other wear sensitive To have to pass fittings.
  • Figures 1 and 2 shows the solution to the problem of the invention when the Liquid delivery is discontinuous.
  • the liquid medium will drain the supply source is sucked via line 5 into the gas displacement container 1 and after filling it with a gas, for example nitrogen or air, over the same line 5, the hydrodynamic liquid flow control 6 and the delivery line 7 pressed into a flow container 13.
  • a gas for example nitrogen or air
  • a continuously operating pump unit must include at least two individual pump units P and one unit 17 for conducting the Liquid currents coming from the. Delivery lines 7 In a central Delivery line 18, as in FIG. 3.
  • hydrodynamic fluid flow control and Conducting has an essential part in the realization of the subject matter of the invention. It is based on the Le Chatelier-Braun principle of least priority Resistance or the lowest energy requirement.
  • the technical use according to the present invention was not obvious to a person skilled in the art, rather unlikely. It is all the more surprising that the principle according to the invention works. This is intended to be closer to the two items of liquid flow control here by means of unit 6 and the liquid flow direction by means of Unit 17, with Figures 2 to 2f and 3 and 4, are explained.
  • valves in the pump requires a specific liquid suction and delivery system. This could be developed with the unit 6 of the hydrodynamic flow control in connection with a food container 8.
  • the liquid medium despite the open pipe bridge R, runs between the delivery lines 5 and 7 through the feed container 8 filled with liquid medium, without the conveyed liquid escaping into the feed container.
  • corresponding geometrical constructions of the units 6, which bridge the bridge R without wires are designed in the direction of the feed container 8 such that a higher pressure energy expenditure is required for a change in the direction of the liquid flow than for the desired flow direction of the liquid.
  • the funnel-shaped design of the lower connection 16 of the delivery line 7 would have to reverse the flow of the liquid media flow.
  • the energy expenditure is extremely high, since the existing flow velocity would have to be slowed down to almost zero. Consequently, the liquid media flow looks for the easier path in terms of energy, namely in the direction of the delivery line 7, towards the flow container or the delivery line end connector of the line 7, in the direction of which the liquid only has to overcome the energy of the gravitational counterpressure.
  • the hydrodynamic principle expressly does not work on the principle of jet pumps. Therefore, the liquid level in the feed tank 8 remains unchanged during the pumping phase. It is expedient that the liquid level of the feed container 8 remains above the lower end of the connector 17 during the pumping phase in order to maintain the hermetic seal. Exemplary further constructions of the unit 6 are shown according to FIGS. 2a to 2f and 10.
  • the generated liquid media flow is at least one according to the invention two inlet nozzle 19 possessing unit 17, for directing liquid media in a central delivery line 18 conducts from where the liquid conveyed, as in Case of the single pump, gets into the outlet or the flow tank.
  • the hydrodynamic operating principle of the unit 17 is based on the specific geometric construction of the aggregate that causes the Flow of the liquid medium coming from one of the inlet connections 19 in the direction is directed to the central conveyor.
  • the geometric construction of the Unit 17 is designed in such a way that the liquid flow flows in the direction of the central one Delivery line 18 is energetically preferred. So that is also key in this the installation of valves is not required and the entire system therefore works
  • the obtuse-angled radii R and RI support the preferred unit design.
  • FIG. 7 shows an exemplary variant of the device, three hydrodynamic pump units being used.
  • the phase sequence of the functioning of the pump units is detected by means of sensor scanning of the filling level of the gas displacement container, and by means of pneumatic control, the gas supply nozzle 3 and gas discharge nozzle 4 are opened or closed accordingly, as is shown with the circuit diagram in FIG. 8.
  • the figures show the compactness of the device in the combination of the pump units P and the treatment unit A for the treatment of the body to be treated.
  • the operation of the hydrodynamic pump according to FIG. 1 is described as an example.
  • the feed container 8 is filled with the liquid to be used when the valve of the gas discharge nozzle 4 is open until the sensor 10 of the gas displacement container 1 comes into operation when the valve is "full” and the valve of the nozzle 4 closes and furthermore the filling mark of the food container 8 is reached above the end of the nozzle 16 of the unit 6.
  • the valve of the gas inlet connection 3 is now opened and air is pressed into container 1.
  • the liquid medium is pumped via the delivery line 7 into the feed tank 13 until the fill level sensor 11 reaches the mark empty. This completes a pump cycle.
  • the next pump cycle takes place in the same way.
  • the inventive pump and combination device for treating solids make a significant contribution to technical progress, in particular the Emphasize environmental benefits by saving material by less Wear and energy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Rotary Pumps (AREA)

Claims (4)

  1. Pompe hydrodynamique (P) pour le transfert de liquides (C), consistant en:
    1) un réservoir de déplacement des gaz (1) muni des détecteurs de niveau du liquide (10) et (11), une buse d'alimentation des gaz (3), une buse de dérivation des gaz (4) et un raccord pour une conduite d'alimentation / refoulement du liquide.
    2) une conduite d'alimentation et, en même temps, une conduite de refoulement (5), un agrégat de contrôle de l'écoulement du liquide (6) pour la conduite du liquide dans la direction souhaitée pendant les phases de pompage « aspiration » et « refoulement »,
    3) une conduite de refoulement (7) conduisant au réservoir précédent du liqiuide, aussi qu'
    4) un réservoir d'alimentation du liquide (8) utilisé comme réservoir précédent pour le liquide à refouler et qui, en même temps, fait que par le niveau de liquide à maintenir, la buse en entonnoir (22) de l'agrégat (6) reste fermé hermétiquement.
  2. Agrégat de contrôle de l'écoulement des liquides hydrodynamique (6) selon revendication 1, avec la fonction de l'aspiration « sans soupapes » et du . « refoulement » des liquides d'après le principe d'écoulement sous la contrainte la plus petite, à l'occasion de quoi l'agrégat a été dessiné de manière que, pendant la phase de refoulement de la pompe, l'ecoulement du liquide dans la direction souhaitée soit préféré et à l'occasion de quoi, pendant la phase d'aspiration de la pompe, l'écoulement du liquide vers le réservoir (1) est ouvert sans soupapes.
  3. Pompe hydrodynamique selon revendication 1, caractérisée en ce que l'alimentation du liquide au réservoir de déplacement des gaz (1) est effectuée par l'intermédiaire d'une variante fermée (26) du contrôle de liquides.
  4. Pompe hydrodynamique selon revendicationl, caractérisé en ce que l'écoulement du liquide est effectué à l'aide d'une soupage dynamique (27) et un deuxième réservoir de déplacement des gaz (1a) selon les exigences particulières de l'application.
EP98103556A 1997-03-14 1998-02-28 Pompe fluidique avec alimentation et charge hydrodynamique Expired - Lifetime EP0861980B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1997108418 DE19708418A1 (de) 1997-03-14 1997-03-14 Schlichtenanlage mit Verdrängungspumpen
DE19708418 1997-03-14
DE19748630 1997-11-04
DE19748630 1997-11-04

Publications (3)

Publication Number Publication Date
EP0861980A2 EP0861980A2 (fr) 1998-09-02
EP0861980A3 EP0861980A3 (fr) 1999-09-01
EP0861980B1 true EP0861980B1 (fr) 2004-08-04

Family

ID=26034433

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98103556A Expired - Lifetime EP0861980B1 (fr) 1997-03-14 1998-02-28 Pompe fluidique avec alimentation et charge hydrodynamique

Country Status (3)

Country Link
EP (1) EP0861980B1 (fr)
AT (1) ATE272794T1 (fr)
DE (1) DE59811725D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018003356A1 (de) * 2018-04-19 2019-10-24 Michael Semakin Verdichter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2237380A1 (de) * 1972-07-29 1974-02-14 Bayer Ag Pumpvorrichtung
BE787289A (fr) * 1972-08-07 1972-12-01 Everhard Herman H Stromingsstuurorgaan voor vloeistoffen en gassen en inrichtingen uitgerust met een dergelijk orgaan.
US5074758A (en) * 1988-11-25 1991-12-24 Mcintyre Glover C Slurry pump
GB8913276D0 (en) * 1989-06-09 1989-07-26 Hanford Eng Ltd A venturi pump apparatus
DE4126384C2 (de) * 1991-11-22 2000-07-20 Bojan Vasile Adrian Pumpenanordnung zur Förderung von insbesondere heißen und korrosiven Flüssigkeiten

Also Published As

Publication number Publication date
DE59811725D1 (de) 2004-09-09
EP0861980A2 (fr) 1998-09-02
ATE272794T1 (de) 2004-08-15
EP0861980A3 (fr) 1999-09-01

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