EP1577036B1 - Dispositif de dosage pour matière fondue - Google Patents

Dispositif de dosage pour matière fondue Download PDF

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Publication number
EP1577036B1
EP1577036B1 EP05001947A EP05001947A EP1577036B1 EP 1577036 B1 EP1577036 B1 EP 1577036B1 EP 05001947 A EP05001947 A EP 05001947A EP 05001947 A EP05001947 A EP 05001947A EP 1577036 B1 EP1577036 B1 EP 1577036B1
Authority
EP
European Patent Office
Prior art keywords
metering
opening
metering device
melt
chamber
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.)
Not-in-force
Application number
EP05001947A
Other languages
German (de)
English (en)
Other versions
EP1577036A1 (fr
Inventor
Tödtmann Rolf
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.)
PENOX GmbH
Original Assignee
PENOX 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 PENOX GmbH filed Critical PENOX GmbH
Priority to SI200530877T priority Critical patent/SI1577036T1/sl
Priority to PL05001947T priority patent/PL1577036T3/pl
Publication of EP1577036A1 publication Critical patent/EP1577036A1/fr
Application granted granted Critical
Publication of EP1577036B1 publication Critical patent/EP1577036B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening

Definitions

  • the invention relates to a metering device according to the preamble of claim 1 for a melt, in particular for a molten metal.
  • a metering device of the type mentioned in the introduction is used, for example, in the production of metal oxides in order to be able to specify the amount of molten metal that is to be supplied to the oxidation process as accurately as possible.
  • the metering device is for this purpose equipped with a metering chamber, which is either arranged separately from the melting device for the metal and connected by a line with this or is provided directly on the melting device.
  • the metering chamber may also be designed to be heated.
  • the metering opening provided on the metering chamber can be released or closed in order to regulate the amount of melt to be dispensed in this way.
  • the metering device Since the metering of the melt must be carried out at the melting temperature, there is the problem, in particular with materials that tend to oxidation, that the metering opening during operation by oxides slowly added, so that proper dosing difficult or possibly impossible. In the previously used metering devices, the metering device must be switched off when the metering orifice is added. After cooling the metering device, the metering element and the metering opening can then be cleaned.
  • Devices for cleaning a dosing are, for example, from EP 0 109 348 A and the US 4,073,414 known.
  • EP 0 109 348 A discloses a stuffing box assembly on casting furnaces having a stopper rod with a piston adapted to and axially and rotationally movable within a pouring hole opening.
  • the axial movement of the piston or the stopper rod primarily enables the release or the closure of the pouring hole opening for metering the melt during the casting process.
  • US 4,073,414 discloses a device for metering a molten metal with a metering rod or locking rod, which is movable from an open position to a closed position axially with respect to a metering opening.
  • the locking rod is additionally rotatable.
  • a disadvantage of the known metering devices that a cleaning of the metering and the metering is possible only when the metering device is switched off, whereby the current production process must be interrupted.
  • the invention solves the problem by a metering device with the features of claim 1.
  • the metering element serves not only for closing the metering opening, but at the same time as a means for cleaning the metering opening during operation of the metering device.
  • the metering element can be moved axially back and forth.
  • the dosing element can also be rotated about its introduction direction, whereby additionally a rotary relative movement of the dosing element to the dosing opening is achieved.
  • an axially adjustable dispensing needle is used, which is simultaneously rotatably drive in addition to the axial adjustability about its longitudinal axis.
  • the dispensing needle is inserted into the metering opening.
  • the metering device it is proposed to manufacture at least the free end of the metering element to be introduced into the metering opening from a heat-resistant and at the same time hardened material.
  • the free end is hardened for this purpose either by suitable hardening and heat treatment steps.
  • the metering opening is formed on an insert, which is preferably releasably attached to the metering chamber.
  • the insert provided with the metering can be formed of a particularly resistant material, so that in particular the opening portion of the metering, which is exposed by opening and closing on the one hand and by cleaning on the other hand very high mechanical loads, a comparatively long service life , If the insert is releasably attached to the metering chamber, it can be removed without much effort and replaced by another insert.
  • the metering orifice preferably has an inlet funnel which has a conically tapered funnel section in the outflow direction of the melt, which preferably merges into a channel of constant cross section, whereby a continuous melt stream from the metering opening can be ensured.
  • inlet funnel which has a conically tapered funnel section in the outflow direction of the melt, which preferably merges into a channel of constant cross section, whereby a continuous melt stream from the metering opening can be ensured.
  • the actuator with which the metering element can be adjusted both axially and rotationally, is preferably equipped with a single drive unit.
  • a single drive unit is used as the drive unit, which is coupled to the metering element for transmitting the adjusting movement.
  • an actuator which has a first drive unit for axial adjustment of the metering element and a second drive unit for rotational adjustment of the metering element. This is particularly advantageous if an already existing system with a drive unit for axial adjustment of the dosing is to be retrofitted with a drive unit for rotatably adjusting the dosing.
  • the axial and rotary adjustment of the metering element can optionally take place simultaneously.
  • the metering optionally axial or rotatory to adjust.
  • these two operating modes are realized simultaneously, so that the user can adjust the dosing either simultaneously axially and rotationally or only axially and only rotationally.
  • the simultaneous axial and rotational adjustment of the metering element has the advantage that the cleaning of the metering and the metering can also be done during normal operation of the metering device.
  • a gimbal is provided in a particularly preferred embodiment of the metering device according to the invention between the metering and the actuator, which couples the metering with the actuator. With the help of the gimbal suspension, an axial offset between the metering and the axes of movement of the actuator can be compensated.
  • the actuator is arranged outside the metering chamber, wherein the metering element is a metering needle, which protrudes through the metering chamber and axially inserted into the metering or can be pulled out of this.
  • the metering needle is mounted displaceably and rotatably in a holding opening formed on the wall of the metering chamber. In this way, a very defined positioning of the dispensing needle is achieved relative to the metering.
  • the metering chamber is preferably connected by a heated supply line to the melting device. This is particularly advantageous when several metering chambers are used, which are connected to a common melting device.
  • the metering device described above is preferably used for metering a molten metal.
  • the metering device according to the invention is suitable for metering molten lead during lead oxide production.
  • a dosing device 10 according to the invention is shown in a schematic representation.
  • the metering device 10 is used in the present case for the metered delivery of a lead melt for Bleioxidher too.
  • the metering device 10 has a heated metering chamber 12 which is made of a refractory material or at least lined with a refractory material.
  • the dosing chamber 12 is connected via a likewise heated supply line 14 with a melting device, not shown in combination, in which the lead is melted for the dosing.
  • an opening 16 is formed, in which an insert 18 is releasably held.
  • the insert 18 is secured to the dosing chamber 12 by a union nut, not shown.
  • metering opening 20 In the cylindrical insert 18 a extending along its axis of symmetry metering opening 20 is formed, which has an inlet funnel 22, with which the metering opening 20 is connected to the interior of the metering chamber 12.
  • the inlet funnel 22 has a funnel section 24 conically tapering in the outflow direction of the melt, which merges into a channel 26 with a round and constant cross section.
  • a holding opening 26 is formed, in which a guide bushing 30 is held.
  • the holding opening 28 is so relative to the opening 16 or so relative to the metering 20 arranged so that the axis of symmetry of the guide bush 30 to the symmetry axis of the metering opening 20 is at least approximately aligned.
  • a dosing 32 longitudinally displaceable and rotationally guided as dosing, the structure of which reference is made below Fig. 2 is explained in more detail.
  • the dispensing needle 32 has a needle body 34 made of a heat-resistant steel.
  • the free end of the needle body 34 made of a heat-resistant and simultaneously hardened steel cutting punch 36 is fixed by welding or gluing.
  • Spaced to the free end of the cutting punch 36 at the immediately adjacent front portion of the needle body 34 are three radially outwardly projecting, uniformly spaced apart, identical scrapers 38 attached, which extend in the longitudinal direction L of the dispensing needle 32.
  • the cutting edge 36 facing the front edges 40 of each scraper 38 are viewed in the longitudinal direction L of the needle body 34 inclined and extend at an angle of about 30 ° to the longitudinal direction L of the needle body 34.
  • the course of the front edges 40 of the scraper 38 is angularly to the Adjusted course of the funnel section 34, as will be explained later.
  • an external thread 42 is formed at the other end of the needle body 34, which in Fig. 2 As shown above, an external thread 42 is formed.
  • the dispensing needle 32 is mounted with its needle body 34 in the guide bush 30 axially and rotationally, wherein the external thread 42 is screwed into an extension 43 which is connected to a gimbal 44 of an actuator 46.
  • the actuator 46 is provided with a pneumatically actuated linear rotary cylinder 48 which is capable of selectively adjusting the metering needle 32 axially or rotationally.
  • the dispensing needle 32 protrudes through the metering chamber 12 and is held with its cutting punch 36 to the metering 20 so that when lowering the dispensing needle 32 of the cutting punch 36 can be inserted into the channel 26, whereby the metering 20 is closed while simultaneously the front edges 40 of the scrapers 38 abut the funnel section 24 of the inlet funnel 22.
  • the dispensing needle 32 If, in contrast, the dispensing needle 32 is moved upwardly into its release position, it releases the channel 26 completely, so that lead melts contained in the metering chamber 12 can be metered out of the metering opening 20 to the outside for further processing.
  • the metering device 10 now offers the possibility of cleaning the metering opening 20 and the cutting punch 36 of the metering needle 32 by means of the axial and rotary adjustment of the metering needle 32 and by the interaction of the scrapers 38 with the surface of the hopper section 24.
  • the deposits can be achieved by turning the dispensing needle 32.
  • adhering deposits are safely removed in the channel 26 and at the same time the inlet funnel 22 are cleaned.
  • the dispensing needle 32 is moved to its closed position, in which it rests with its scrapers 38 on the surface of the funnel section 24.
  • the dispensing needle 32 is set in slow rotation with slight axial prestressing of the dispensing needle 32 in the direction of the dispensing opening 20, the scrapers 38 cleaning the surface of the funnel section 24.
  • the loosening deposits are discharged from the melt from the metering chamber 12 as soon as the metering opening 20 is opened again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Confectionery (AREA)
  • Continuous Casting (AREA)
  • Furnace Charging Or Discharging (AREA)
  • External Artificial Organs (AREA)
  • Optical Head (AREA)
  • Processing Of Solid Wastes (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Claims (13)

  1. Dispositif de dosage pour une matière en fusion, en particulier pour un métal en fusion, avec une chambre de dosage (12) sur laquelle est prévue une ouverture de dosage (20) pour délivrer la matière en fusion contenue dans la chambre de dosage (12), un élément de dosage (32) destiné à fermer et dégager l'ouverture de dosage (20) et un actionneur (46) destiné à déplacer l'élément de dosage (32) entre une position de fermeture, dans laquelle il ferme l'ouverture de dosage (20), et une position d'ouverture, dans laquelle il ouvre l'ouverture de dosage (20) pour délivrer la matière en fusion, dans lequel l'élément de dosage (32), pour fermer l'ouverture de dosage (20), peut au moins être partiellement introduit axialement dans celle-ci et, pour le nettoyage de l'ouverture de dosage (20), peut être entraîné en rotation autour de sa direction d'introduction (L),
    caractérisé en ce que
    l'élément de dosage (32) possède, près de son extrémité libre (36) à introduire dans l'ouverture de dosage (20), un racloir (38) faisant saillie radialement vers l'extérieur.
  2. Dispositif de dosage selon la revendication 1, caractérisé en ce que l'on utilise comme élément de dosage une aiguille de dosage (32) se déplaçant axialement qui, pour fermer l'ouverture de dosage (20), doit être introduite axialement dans celle-ci et doit être entraînée en rotation autour de son axe longitudinal (L).
  3. Dispositif de dosage selon la revendication 1 ou 2, caractérisé en ce que l'extrémité libre (36) de l'élément de dosage (32) qui doit être introduite dans l'ouverture de dosage (20) est fabriquée dans un matériau résistant à la chaleur et trempé.
  4. Dispositif de dosage selon au moins une des revendications 1 à 3, caractérisé en ce que l'ouverture de dosage (20) est constituée d'un insert (18) placé sur la chambre de dosage (12), de préférence de manière amovible.
  5. Dispositif de dosage selon au moins une des revendications 1 à 4, caractérisé en ce que l'ouverture de dosage (20) présente un entonnoir d'entrée (22) qui possède une section en entonnoir (24) se réduisant en forme de cône dans la direction d'écoulement de la matière en fusion et se poursuivant de préférence par un canal (26) de section constante.
  6. Dispositif de dosage selon les revendications 1 et 5, caractérisé en ce que ledit au moins un racloir (38), lorsque l'ouverture de dosage (20) est fermée par l'élément de dosage (32), repose au moins partiellement sur la section en entonnoir (24) de l'entonnoir d'entrée (22).
  7. Dispositif de dosage selon au moins une des revendications précédentes, caractérisé en ce que l'actionneur (46) possède une unique unité d'entraînement (48) pour le déplacement axial et rotatif de l'élément de dosage (32).
  8. Dispositif de dosage selon au moins une des revendications précédentes, caractérisé en ce que l'actionneur (46) possède comme unité d'entraînement un vérin linéaire et rotatif (48) actionné de préférence pneumatiquement qui est couplé à l'élément de dosage (32) pour assurer la transmission des mouvements de déplacement.
  9. Dispositif de dosage selon au moins une des revendications précédentes, caractérisé en ce que l'actionneur déplace l'aiguille de dosage (32) simultanément axialement et en rotation et/ou au choix axialement ou en rotation.
  10. Dispositif de dosage selon au moins une des revendications précédentes, caractérisé en ce que l'élément de dosage (32) est couplé avec l'actionneur (46) à l'aide d'une suspension à la Cardan (44).
  11. Dispositif de dosage selon au moins une des revendications précédentes, caractérisé en ce que l'élément de dosage est une aiguille de dosage (32) qui traverse la chambre de dosage (12) et qui est montée de manière à pouvoir coulisser et tourner dans une ouverture de maintien (28) ménagée dans la paroi de la chambre de dosage (12) en face de l'ouverture de dosage (20).
  12. Dispositif de dosage selon au moins une des revendications précédentes, caractérisé en ce qu'une conduite d'alimentation (14), de préférence chauffée, débouche dans la chambre de dosage (12) pour servir à amener la matière en fusion dans la chambre de dosage (12) à partir d'un dispositif de fusion.
  13. Dispositif de dosage selon au moins une des revendications précédentes, caractérisé en ce que le dispositif de dosage (10) sert à doser un métal en fusion, de préférence à doser du plomb fondu pour la fabrication d'oxyde de plomb.
EP05001947A 2004-03-15 2005-01-31 Dispositif de dosage pour matière fondue Not-in-force EP1577036B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200530877T SI1577036T1 (sl) 2004-03-15 2005-01-31 Dozirna naprava za talino
PL05001947T PL1577036T3 (pl) 2004-03-15 2005-01-31 Urządzenie dozujące dla stopionej substancji

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004004019U DE202004004019U1 (de) 2004-03-15 2004-03-15 Dosiervorrichtung für eine Schmelze
DE202004004019U 2004-03-15

Publications (2)

Publication Number Publication Date
EP1577036A1 EP1577036A1 (fr) 2005-09-21
EP1577036B1 true EP1577036B1 (fr) 2009-09-23

Family

ID=32336892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05001947A Not-in-force EP1577036B1 (fr) 2004-03-15 2005-01-31 Dispositif de dosage pour matière fondue

Country Status (7)

Country Link
EP (1) EP1577036B1 (fr)
AT (1) ATE443586T1 (fr)
DE (2) DE202004004019U1 (fr)
DK (1) DK1577036T3 (fr)
ES (1) ES2333727T3 (fr)
PL (1) PL1577036T3 (fr)
SI (1) SI1577036T1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073414A (en) 1976-08-09 1978-02-14 Albany International Corporation Auto crucible for metering and transferring liquid metals
SE444398B (sv) 1982-11-05 1986-04-14 Asea Ab Stopparanordning vid avgjutningsugnar
JPS6340668A (ja) * 1986-08-06 1988-02-22 Nippon Kokan Kk <Nkk> 溶湯流出口を備えた溶湯容器
JPS6372475A (ja) * 1986-09-16 1988-04-02 Nkk Corp 溶湯流出口を備えた溶湯容器

Also Published As

Publication number Publication date
ES2333727T3 (es) 2010-02-26
EP1577036A1 (fr) 2005-09-21
ATE443586T1 (de) 2009-10-15
DE202004004019U1 (de) 2004-05-19
PL1577036T3 (pl) 2010-02-26
SI1577036T1 (sl) 2010-01-29
DE502005008166D1 (de) 2009-11-05
DK1577036T3 (da) 2010-02-01

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