US3864061A - Arrangement of an electromagnetic pump immersed in a liquid material providing a constant discharge - Google Patents

Arrangement of an electromagnetic pump immersed in a liquid material providing a constant discharge Download PDF

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Publication number
US3864061A
US3864061A US401789A US40178973A US3864061A US 3864061 A US3864061 A US 3864061A US 401789 A US401789 A US 401789A US 40178973 A US40178973 A US 40178973A US 3864061 A US3864061 A US 3864061A
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US
United States
Prior art keywords
pump
ladle
liquid metal
arrangement
spout
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
US401789A
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English (en)
Inventor
Henri Carbonnel
Guy Moriaud
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.)
Groupement Atomique Alsacienne Atlantique SA
Alsacienne Atom
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Alsacienne Atom
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 Alsacienne Atom filed Critical Alsacienne Atom
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Publication of US3864061A publication Critical patent/US3864061A/en
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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
    • B22D39/00—Equipment for supplying molten metal in rations
    • B22D39/003—Equipment for supplying molten metal in rations using electromagnetic field

Definitions

  • the present invention relates to the arrangement of an electromagnetic pump immersed in a liquid metal ladle or in a crucible, providing a constant discharge independent from the present level of metal in the said ladle or in the said crucible.
  • the object of the invention is therefore the arranging of an electromagnetic pump immersed in a ladle of liquid metal, providing a discharge independent from the variations in the level of the bath, characterised in that it comprises means keeping the depth of immersion of the said pump constant and simultaneously keeping the pump in the vertical position.
  • the level of the liquid metal may vary in appreciable proportions in the ladle fromwhich it is drawn.
  • the displacement of the pump brings about the displacement of the casting nozzle. It is therefore necessary to relate the displacement of the spout with the displacement of the casting nozzle. It is nevertheless desirable for the lower end of the spout to keep a substantially fixed position which will be designated herebelow by the expression filling point;" this will be, for example, the input of the mould to be fed.
  • the mechanical connections imposed on the pump affect, in their turn, the connection to be established between the casting nozzle of the tube and the upper end of the spout. In this way, it is possible to obtain a perfectly satisfactory arrangement of the pump only if the connection of the pump with the ladle which supports it and the connection of the casting nozzle with the spout are adpated to each other and form a combination together.
  • the object of the invention is also the arrangement of a partly immersed pump in a liquid metal ladle providing a discharge independent from the variations in the level of the bath comprising means keeping the depth of immersion of the said pump constant, characterised in that means acting in combination with the preceding means ensure a substantially fixed position at the base of the liquid metal discharge spout regardless of variation in the level of the bath.
  • the invention is also characterised in that the means keeping the depth of immersion of the pump constant whatever the variation is the level of the bath may be are constituted by two sets of two connecting rods having the same length, forming a double articulated parallelogram, two apexes of each of the parallelograms being fixed to a generating line of the cylindrical pump body by trunnions, whereas other two apexes are fixed to a vertical arm connected to the ladle.
  • the lower arm is extended towards the outside of the pump and forms a support for various elements forming a counter-weight.
  • the upper connecting rods placed on either side of the pump body offer resistance to the torque which is produced each time the pump is started up and which tends to make the latter tilt.
  • the pump remains vertical during all its displacements and that the elements of the pump placed below the line of immersion remain in the liquid metal. They are protected from any untimely action of the oxygen in the air.
  • the liquid metal spire remains permanently filled, thus eliminating all danger of unpriming.
  • the same advantage is observed in the induction pump where a part of the winding remains permanently below the line of immersion.
  • the articulation between the upper portion of the spout and the casting nozzle of the burette can therefore be produced by means of a set of two link arms whose length enables the play resulting from the linear movement of the casting nozzle and the rotating of the spout about the filling point to be compensated.
  • the invention is therefore characterised also in that the means keeping the base of the liquid metal discharge spout at a fixed point called the filling point" are constituted by a displacement in the parallel planes of the axis of the support arm of the connecting rods of conduction pump having a liquid spiral in which may be distinguished at l, the cylindrical body containing at its upper part, the windings (not shown).
  • the pump whose axis takes up the position X is immersed in a ladle 2 containing the liquid metal.
  • the arrangement according to the invention enables the pump to be kept permenently immersed up to the level 3 which is adjustable by means of the counter weight 12, above the liquid spiral which remains hence permanently fed with liquid metal.
  • the pump immersed in the liquid metal, is kept balanced under the effect of the Archimedean thrust and of the connecting rods 4 and 5.
  • These connecting rods forms a parallelogram.
  • the lower connecting rod 4 is extended at the upper end by an arm 6 supporting various elements forming a counter-weight.
  • a system of connecting rods, not shown, identical to the connecting rods 4 and 4, is connected to the opposite face of the pump.
  • the connecting rods 4 and 5 are connected to the pump by trunnions 6 and 7 arranged on a generating line of the cylindrical body of the pump. At the other end, these connecting rods 4 and 5 are connected to a vertical arm 8 through trunnions 9 and 10.
  • the ventilator 11 On the mobile arm 4' extending the connecting rod 4 and on the arm not shown connected to the opposite face, the ventilator 11 whose function is to cool the the pump, of the axis of the pump and of the spout, as
  • FIG. 1 shows diagrammatically the arrangement which is the object of the invention, in the case of a windings contained in the cylindrical body 1 is arranged permanently.
  • An extra adjustable counterweight 12 is connected to the arm 4.
  • the vertical arm 8 ends at its base with a leg 13 connected to the edge of the ladle by any known easily dismantled means. On this leg, there is a supply connection 14 connected to the ventilator 11 by a cable 15 running along the arm 4. A supply connection 16 also fixed to the leg 13 enables, moreover, the windings of the pump to the supplied by means of an electric duct 17 running along the upper connecting rod 5.
  • the pumped liquid metal rises along the inclined tube 20 ending in a casting nozzle 21.
  • a link arm 22 connected to the casting nozzle 21 by trunnions 24 supports a spout 25.
  • the spout 25 is also connected to the casting nozzle 21 by a second link arm, not shown, arranged symmetrically to the link arm 22 in relation to the plane of the FIGURE.
  • the liquid metal discharged by the pump flows along the spout 25 up to the filling point 26 where the opening of the receptacle (mould, crucible, etc to be filled with the metal contained in the ladle 2 is placed.
  • the pump and its arrangement take up the position shown in the FIGURE in a dotted line; the axis of the pump is then X.
  • the level of the liquid metal goes down in the ladle 2.
  • the pump undergoes a linear movement which keeps the pump in a vertical position; but this displacement comprises a horizontal component which tends to bring it closer to the arm 8, since the connecting rods 4 and 5 become inclined in relation to a horizontal plane.
  • the result of this is that the horizontal distance between the casting nozzle 21 and the filling point 26 increases. This increase of the horizontal distance is compensated by the fact that the spout, following the vertical movement of the casting nozzle, becomes less inclined and compensates the horizontal component of the movement of the casting nozzle.
  • the axis of the pump is displaced from X towards X.
  • the pump assembly and its arrangement constitute a block which man easily be transported an implanted on a ladle filled with liquid metal.
  • adjustable means for keeping the depth of immersion of the cylindrical pump constant and for simultaneously keeping the pump axis in a vertical position, said adjustable means comprising two sets of connecting rods 4 and 5 of the same length, each set forming an articulated parallelogram, trunnions 6 and 7 fixing two apices of the two parallelograms on a generating line of the cylindrical body of the pump, trunnions 9 and 10 fixing the other two apices respectively of said parallelogram to the liquid metal ladle and wherein one of the connecting rods of each set being extended towards the outside of the ladle by an arm 4 bearing an adjustable counterweight to enable the depth of immersion to be varied.
  • a metal discharge spout 25 operatively coupled to said pump and means for insuring a fixed position with a base of the metal discharge spout regardless of variations in the level of liquid metal
  • said pump including an inclined tube extending upwardly within said ladle and terminating in a casting nozzle 21, and wherein said insuring means comprises link arms 22 arranged symmetrically on either side of the spout and pivotably connecting said casting nozzle 21 to the inboard end of said metal discharge spout 25.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Details Of Reciprocating Pumps (AREA)
US401789A 1972-09-28 1973-09-28 Arrangement of an electromagnetic pump immersed in a liquid material providing a constant discharge Expired - Lifetime US3864061A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7234393A FR2217102B1 (enrdf_load_stackoverflow) 1972-09-28 1972-09-28

Publications (1)

Publication Number Publication Date
US3864061A true US3864061A (en) 1975-02-04

Family

ID=9104913

Family Applications (1)

Application Number Title Priority Date Filing Date
US401789A Expired - Lifetime US3864061A (en) 1972-09-28 1973-09-28 Arrangement of an electromagnetic pump immersed in a liquid material providing a constant discharge

Country Status (10)

Country Link
US (1) US3864061A (enrdf_load_stackoverflow)
JP (1) JPS4971506A (enrdf_load_stackoverflow)
AT (1) AT332005B (enrdf_load_stackoverflow)
CA (1) CA1028476A (enrdf_load_stackoverflow)
CH (1) CH575797A5 (enrdf_load_stackoverflow)
DE (1) DE2348092A1 (enrdf_load_stackoverflow)
FR (1) FR2217102B1 (enrdf_load_stackoverflow)
GB (1) GB1425255A (enrdf_load_stackoverflow)
IT (1) IT995515B (enrdf_load_stackoverflow)
SU (1) SU507207A3 (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615660A (en) * 1983-05-04 1986-10-07 Nikex Nehezipari Kulkereskedelmi Vallalat Electromagnetic metal melt pump for pumping out and charging the molten metal from a furnace
US4637684A (en) * 1981-07-31 1987-01-20 Canon Kabushiki Kaisha Method of making an optical coupler device utilizing volatile liquid to achieve optical contact
JP2016032835A (ja) * 2014-07-31 2016-03-10 トヨタ自動車株式会社 ダイカスト鋳造装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825691U (ja) * 1981-08-11 1983-02-18 株式会社クボタ 斜軸形ポンプ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190968A (en) * 1938-05-09 1940-02-20 Acree John Fred Water hoist
US2755327A (en) * 1948-05-26 1956-07-17 Ajax Engineering Corp Device for the discharge of molten metal
US3453460A (en) * 1965-06-22 1969-07-01 Pilkington Brothers Ltd Linear induction motors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190968A (en) * 1938-05-09 1940-02-20 Acree John Fred Water hoist
US2755327A (en) * 1948-05-26 1956-07-17 Ajax Engineering Corp Device for the discharge of molten metal
US3453460A (en) * 1965-06-22 1969-07-01 Pilkington Brothers Ltd Linear induction motors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4637684A (en) * 1981-07-31 1987-01-20 Canon Kabushiki Kaisha Method of making an optical coupler device utilizing volatile liquid to achieve optical contact
US4615660A (en) * 1983-05-04 1986-10-07 Nikex Nehezipari Kulkereskedelmi Vallalat Electromagnetic metal melt pump for pumping out and charging the molten metal from a furnace
JP2016032835A (ja) * 2014-07-31 2016-03-10 トヨタ自動車株式会社 ダイカスト鋳造装置

Also Published As

Publication number Publication date
JPS4971506A (enrdf_load_stackoverflow) 1974-07-10
ATA814273A (de) 1975-12-15
IT995515B (it) 1975-11-20
FR2217102A1 (enrdf_load_stackoverflow) 1974-09-06
DE2348092A1 (de) 1974-04-04
AT332005B (de) 1976-09-10
SU507207A3 (ru) 1976-03-15
FR2217102B1 (enrdf_load_stackoverflow) 1976-09-10
CH575797A5 (enrdf_load_stackoverflow) 1976-05-31
GB1425255A (en) 1976-02-18
CA1028476A (en) 1978-03-28

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