CN114570919B - Electromagnetic conveying device and method for metal melt - Google Patents
Electromagnetic conveying device and method for metal melt Download PDFInfo
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- CN114570919B CN114570919B CN202210208767.8A CN202210208767A CN114570919B CN 114570919 B CN114570919 B CN 114570919B CN 202210208767 A CN202210208767 A CN 202210208767A CN 114570919 B CN114570919 B CN 114570919B
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- pump
- magnetic field
- electromagnetic
- field generator
- pump core
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- 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
- B22D41/12—Travelling ladles or similar containers; Cars for ladles
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- 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
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
- B22D41/015—Heating means with external heating, i.e. the heat source not being a part of the ladle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention provides a device and a method for electromagnetically conveying metal melt, which comprises a pump pipe, a pump core and a magnetic field generator, wherein the inside of the pump pipe is provided with an accommodating space, and the upper end and the lower end of the pump pipe are respectively an outlet and an inlet which are communicated with the accommodating space; the pump core is arranged in the accommodating space, the periphery of the upper end of the pump core is hermetically connected with the inner wall of the outlet of the pump pipe, the lower end of the pump core extends to the inlet of the pump pipe, the cloth distributing surface is arranged in the circumferential direction, and a plurality of through holes for communicating the inside and the outside of the pump core are formed in the cloth distributing surface; the magnetic field generator is arranged along the circumference of the pump pipe and can generate a magnetic field, so that the metal melt flowing in from the inlet of the pump pipe can be driven to flow out from the outlet of the pump pipe through the through hole by the action of the magnetic field.
Description
Technical Field
The invention relates to the technical field of casting equipment, in particular to a metal melt electromagnetic conveying device and a metal melt electromagnetic conveying method.
Background
In the metal casting process, metal melt is often required to be conveyed, the traditional technology is to pour the metal melt by using a transfer ladle, but the metal melt is seriously oxidized in a pouring mode, the temperature is greatly reduced, and certain potential safety hazards exist, so a plurality of new technologies are invented in the industry to solve the problems, for example, a pneumatic melt conveying ladle system and a melt conveying method are disclosed in patent document CN109570481B, the metal melt is extruded from a conveying pipeline by inputting compressed air into a sealed conveying ladle, compared with the traditional technology, the design is safer, the melt quality is better, and quantitative pouring can be realized, but the method also has the following defects:
firstly, the bag cover and the bag body are fastened and sealed, so that the feeding into the transport bag is inconvenient, and the efficiency is low;
secondly, the sealing difficulty of the high-temperature equipment is high, and the reliability of the equipment is reduced;
thirdly, the ladle cover is required to be opened frequently for feeding, so that the sealing element can be inevitably contacted with droplets, smoke and the like in the feeding process, and the sealing degree of each time can be different due to aging of the sealing element, thermal deformation caused by temperature fluctuation, dust in a casting shop contaminating the sealing element and the like, so that the precision of subsequent quantitative pouring is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a metal melt electromagnetic conveying device and a metal melt electromagnetic conveying method.
According to the invention, the electromagnetic conveying device for the metal melt comprises:
the pump pipe is internally provided with an accommodating space, and the upper end and the lower end of the pump pipe are respectively provided with an outlet and an inlet which are communicated with the accommodating space;
the pump core is arranged in the accommodating space, the periphery of the upper end of the pump core is hermetically connected with the inner wall of the outlet of the pump pipe, the lower end of the pump core extends to the inlet of the pump pipe, a cloth distribution surface is arranged in the circumferential direction, a runner with the same thickness is formed between each position of the cloth distribution surface and the inner wall of the pump pipe, and a plurality of through holes for communicating the inside and the outside of the pump core are formed in the cloth distribution surface;
and the magnetic field generator is arranged along the circumferential direction of the pump pipe and can generate a magnetic field, so that the metal melt flowing in from the inlet of the pump pipe can be driven to flow out from the outlet of the pump pipe through the through hole through the flow channel under the action of the magnetic field.
According to the electromagnetic metal melt conveying method provided by the invention, the alternating electromagnetic field is applied to the metal melt in the pump pipe by the magnetic field generator to push the metal melt to flow, and the circulation path of the metal melt is limited by the pump core to finally force the metal melt to flow towards a set direction.
Preferably, the magnetic field generator employs a solenoidal coil.
Preferably, the solenoid coil is wound into a spiral shape by using a hollow copper tube.
Preferably, the pump tube is a tubular structure made of a ceramic material.
Preferably, the pump tube is disposed inside the solenoid coil with the pump tube wall parallel to the solenoid coil inner surface.
Preferably, the interior of the magnetic field generator is in an annular truncated cone shape, the large-diameter end of the magnetic field generator faces the outlet of the pump pipe, and the small-diameter end of the magnetic field generator faces the inlet of the pump pipe; or
The interior of the magnetic field generator is in an annular cylindrical shape.
Preferably, the flow rate of the metal melt and the melt temperature can be adjusted by adjusting the alternating current mode of the magnetic field generator.
Preferably, a cooling medium is arranged on the magnetic field generator.
Preferably, the pump core is of an inverted omega-shaped or V-shaped structure.
Compared with the prior art, the invention has the following beneficial effects:
1. the electromagnetic pump uses the electromagnetic coil to generate electromagnetic force on the metal melt to push the metal melt to flow, and blocks a backflow channel of the melt through the pump core to enable the metal melt to flow towards a set direction, so that the purpose of conveying the metal melt is achieved.
2. The invention can conveniently adjust the conveying speed and temperature of the metal melt by changing the alternating current to control the conveying flow and the induction heating degree of the metal melt.
3. The invention adopts the alternating current control technology, is mature and stable, has simple operation, and is convenient to realize automatic and intelligent operation.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a comparative structure of the present invention without a pump core;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
The figures show that:
Through-hole 52
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the concept of the invention. All falling within the scope of the invention.
Example 1:
the invention provides an electromagnetic conveying device for a metal melt, which comprises a pump pipe 3, a pump core 5 and a magnetic field generator 6, wherein the inside of the pump pipe 3 is provided with an accommodating space 31, and the upper end and the lower end of the pump pipe 3 are respectively an outlet and an inlet communicated with the accommodating space 31; the pump core 5 is arranged in the accommodating space 31, the periphery of the upper end of the pump core 5 is hermetically connected with the inner wall of the outlet of the pump tube 3, the lower end of the pump core 5 extends to the inlet of the pump tube 3, a cloth distribution surface 51 is arranged in the circumferential direction, a runner 7 with the same thickness is formed between each part of the cloth distribution surface 51 and the inner wall of the pump tube 3, and a plurality of through holes 52 communicating the inside and the outside of the pump core 5 are formed in the cloth distribution surface 51; the magnetic field generator 6 is arranged along the circumference of the pump tube 3 and can generate a magnetic field so that the metal melt 8 flowing in from the inlet of the pump tube 3 can be driven to flow out from the outlet of the pump tube 3 through the through hole 52 via the runner 7 under the action of the magnetic field.
The magnetic field generator 6 is preferably an electromagnetic coil, for example, a solenoid coil, the invention arranges the solenoid coil outside the pump tube 3, arranges the pump core 5 inside the pump tube 3, fills the pump tube 3 with the metal melt 8, and supplies alternating current to the solenoid coil, and the magnetic field generator 6 is provided with a cooling medium for cooling, and the cooling medium can be compressed gas, cooling water, etc. The metal melt 8 flows under the action of electromagnetic force, but the internally arranged pump core 5 limits the flow path of the metal melt 8, and the metal melt 8 is forced to flow towards a set direction, so that the aim of conveying the metal melt 8 is fulfilled.
Specifically, the solenoid coil is preferably wound in a spiral shape using a hollow copper tube.
In a specific application, the pump tube 3 is arranged inside the solenoid coil, and the wall of the pump tube 3 is parallel to the inner surface of the solenoid coil. The inside of the magnetic field generator 6 is in the shape of an annular truncated cone, the large-diameter end of the magnetic field generator 6 faces the outlet of the pump pipe 3, and the small-diameter end of the magnetic field generator 6 faces the inlet of the pump pipe 3, so that the direction of electromagnetic thrust is more consistent with the flowing direction of the metal melt 8, and the conveying efficiency is further improved. At the moment, the side surfaces of the pump pipe 3 and the pump core 5 are also parallel to the coil and are in an annular truncated cone shape; or the inside of the magnetic field generator 6 is in the shape of an annular cylinder.
The flow rate of the metal melt 8 and the melt temperature can be adjusted by adjusting the alternating current mode of the magnetic field generator 6.
The pump core 5 is of an inverted omega-shaped or V-shaped structure.
To facilitate a better understanding of the present invention, for example, as shown in fig. 2, which is a comparative schematic diagram of the present invention without a pump core 5, when the pump core 5 is not provided, the outer layer of the molten metal 8 in the pump tube 3 is subjected to radial electromagnetic thrust to move along a radial direction toward a center, and the molten metal 8 at the center is subjected to axial motion under extrusion, wherein the molten metal 8 at the upper part tends to flow upward, which is commonly referred to as a "hump" phenomenon in the industry, and the molten metal 8 at the bottom part tends to flow downward; and finally, the metal melt 8 flowing upwards or downwards flows back to the outer layer again under the driving of negative pressure, and the circulation is repeated in such a way, so that the metal melt 8 only can form internal reflux and cannot move integrally.
The difference between fig. 1 and fig. 2 is that a pump core 5 is added, the pump core 5 is arranged inside a pump pipe 3, the longitudinal section of the pump core 5 is in an inverted omega shape, the open end of the pump core 5 faces the outlet direction of the molten metal 8, the closed end of the pump core 5 faces the inlet direction of the molten metal 8, the edge of the open end of the pump core 5 is hermetically connected with the pump pipe 3, the side surface of the pump core 5 and the inner surface of the pump pipe 3 keep a parallel distance, a plurality of through holes 52 penetrating through the side surface are arranged on the side surface of the pump core 5, and the molten metal 8 outside the pump core 5 still moves along the radial direction to the center and enters the inside of the pump core 5 and turns to move axially at the center; however, due to the limitation of the closed end of the pump core 5, the metal melt 8 in the pump core 5 can not flow towards the closed end and can only be extruded from the open end of the pump core 5; and because the edge of the opening end of the pump core 5 is hermetically connected with the pump pipe 3, the metal melt 8 at the opening end can not flow back to the outside of the pump core 5, therefore, the metal melt 8 outside the pump core 5 continuously enters the inside of the pump core 5 and flows out from the opening end of the pump core 5, and the purpose of conveying the metal melt 8 is achieved.
The invention also provides a metal melt electromagnetic conveying method, which utilizes the magnetic field generator 6 to apply an alternating electromagnetic field to the metal melt 8 in the pump pipe 3 to push the metal melt 8 to flow, and the pump core 5 limits the flow path of the metal melt 8 to finally force the metal melt 8 to flow towards a set direction.
Example 2:
this embodiment is a preferred embodiment of embodiment 1.
The embodiment provides a metal melt electromagnetic conveying, as shown in fig. 3, comprising a source container 1, an inlet connecting pipeline 2, a pump pipe 3, an outlet connecting pipe 4, a pump core 5 and a magnetic field generator 6, wherein the magnetic field generator 6 adopts a solenoid coil, and the solenoid coil adopts a hollow copper tube to be wound into a spiral shape.
The source container 1 is used for containing a metal melt 8 to be conveyed, a melt discharge port is formed in the bottom of the side face of the source container 1, and an inlet connecting pipeline 2, a pump pipe 3 and an outlet connecting pipe 4 are sequentially connected in a sealing mode to form a metal melt 8 conveying channel; wherein one end of the inlet connecting pipeline 2 is hermetically connected to the discharge port of the source container 1, and the other end is hermetically connected to the inlet end of the pump pipe 3; the outlet connecting pipe 4 is connected with the outlet end of the pump pipe 3 in a sealing way at one end and connected with the material using unit at the other end.
The side surface of the pump core 5, the pump pipe 3 and the solenoid coil are sequentially arranged in parallel from inside to outside and are all in a circular truncated cone shape, the large diameter direction of the pump core 5 faces the outlet direction, the small diameter direction of the pump core 5 faces the inlet direction, and the outlet height of the pump pipe 3 is lower than the initial liquid level of the source container 1; 5 longitudinal sections of pump core are the shape of falling omega, and 5 open ends of pump core are towards 3 exit ends of pump line, and 5 seal ends of pump core are towards 3 entry ends of pump line, the edge and the 3 sealing connection of pump line of 5 open ends of pump core, and 5 sides of pump core and 3 internal surfaces of pump line keep parallel interval, and set up a plurality of through-holes 52 that run through on the 5 sides of pump core.
When the embodiment works, the height of the outlet of the pump pipe 3 is lower than the initial liquid level of the source container 1, so that the inlet connecting pipeline 2 and the pump pipe 3 are filled with the metal melt 8, after the solenoid coil is electrified, the metal melt 8 outside the pump core 5 is subjected to radial electromagnetic thrust and enters the pump core 5 through the side through hole 52 of the pump core 5, and the metal melt 8 is extruded from the opening end of the pump core 5 and enters the outlet connecting pipe 4 due to the limitation of the sealing end of the pump core 5; due to the negative pressure, the metal melt 8 in the source container 1 continuously flows through the inlet connection 2 to the outside of the pump cartridge 3. Therefore, the molten metal in the source container 1 is continuously pushed to the outlet connecting pipe 4, and the purpose of conveying the molten metal 8 is achieved.
The working principle of the invention is as follows:
after the alternating current is introduced into the solenoid coil, the molten metal 8 in the pump tube 3 is subjected to an inward electromagnetic force, so that the molten metal 8 is continuously pushed into the pump core 5 from the outer side of the pump core 5 through the through hole 52. Due to the action of negative pressure, the metal melt 8 continuously enters the outer side of the pump core 5 from the inlet; the metal melt 8 inside the pump core 5 can only flow from the opening end to the outlet under the action of electromagnetic thrust because of the restriction of the pump core 5. Therefore, the molten metal 8 can be continuously conveyed from the inlet to the outlet, and the flow rate of the molten metal 8 and the temperature of the molten metal can be adjusted by controlling the parameters of the alternating current.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description has described specific embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. An electromagnetic conveying device for molten metal, comprising:
the pump pipe (3) is internally provided with an accommodating space (31), and the upper end and the lower end of the pump pipe are respectively an outlet and an inlet communicated with the accommodating space (31);
the pump core (5) is arranged in the accommodating space (31), the periphery of the upper end of the pump core is hermetically connected with the inner wall of the outlet of the pump tube (3), the lower end of the pump core extends to the inlet of the pump tube (3), a cloth distribution surface (51) is arranged in the circumferential direction, each part of the cloth distribution surface (51) and the inner wall of the pump tube (3) form a flow channel (7) with each part having the same thickness, and a plurality of through holes (52) communicating the inside and the outside of the pump core (5) are formed in the cloth distribution surface (51); the opening end of the pump core (5) faces the outlet direction of the metal melt (8), the sealing end of the pump core (5) faces the inlet direction of the metal melt (8), and the edge of the opening end of the pump core (5) is hermetically connected with the pump pipe (3);
the magnetic field generator (6) is arranged along the circumferential direction of the pump tube (3) and can generate a magnetic field, so that the molten metal (8) flowing in from the inlet of the pump tube (3) can be driven to flow out from the outlet of the pump tube (3) through the through hole (52) through the runner (7) under the action of the magnetic field.
2. Electromagnetic conveying device for metal melts according to claim 1, characterized in that the magnetic field generator (6) is a solenoid coil.
3. The electromagnetic metal melt conveying device of claim 2, wherein the solenoid coil is wound in a spiral shape using a hollow copper tube.
4. Electromagnetic conveying device for metal melts according to claim 1, characterized in that the pump pipe (3) is of a tubular construction made of ceramic material.
5. The electromagnetic metal melt conveying device according to claim 2, wherein the pump tube (3) is disposed inside the solenoid coil, and the wall of the pump tube (3) is parallel to the inner surface of the solenoid coil.
6. The electromagnetic conveying device for the molten metal according to claim 1, characterized in that the magnetic field generator (6) is internally in the shape of an annular truncated cone, the large-diameter end of the magnetic field generator (6) faces the outlet of the pump pipe (3), and the small-diameter end of the magnetic field generator (6) faces the inlet of the pump pipe (3); or alternatively
The magnetic field generator (6) is in an annular cylindrical shape.
7. Electromagnetic metal melt conveying device according to claim 1, characterized in that the flow rate and melt temperature of the metal melt (8) can be adjusted by adjusting the alternating current mode of the magnetic field generator (6).
8. Electromagnetic conveying device for metal melts according to claim 1, characterized in that a cooling medium is arranged on the magnetic field generator (6).
9. The electromagnetic conveying device for metal melts according to claim 1, characterized in that the pump core (5) is of an inverted Ω -shaped or V-shaped structure.
10. A method for electromagnetically conveying a molten metal, characterized in that, with the apparatus for electromagnetically conveying a molten metal according to any one of claims 1 to 9, an alternating electromagnetic field is applied to the molten metal (8) in a pump pipe (3) by a magnetic field generator (6) to push the molten metal (8) to flow and restrict the flow path of the molten metal (8) by a pump core (5) to finally force the molten metal (8) to flow in a set direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210208767.8A CN114570919B (en) | 2022-03-03 | 2022-03-03 | Electromagnetic conveying device and method for metal melt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210208767.8A CN114570919B (en) | 2022-03-03 | 2022-03-03 | Electromagnetic conveying device and method for metal melt |
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| Publication Number | Publication Date |
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| CN114570919A CN114570919A (en) | 2022-06-03 |
| CN114570919B true CN114570919B (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210208767.8A Active CN114570919B (en) | 2022-03-03 | 2022-03-03 | Electromagnetic conveying device and method for metal melt |
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Citations (9)
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| US5333646A (en) * | 1989-06-02 | 1994-08-02 | Delot Process, S.A. | Electromagnetic valve for controlling the flow of a fluid in a pipe |
| CN101325358A (en) * | 2008-04-25 | 2008-12-17 | 哈尔滨工业大学（威海） | AC superconduction magnetic fluid marine propulsor |
| JP2009262220A (en) * | 2008-04-30 | 2009-11-12 | Sukegawa Electric Co Ltd | Electromagnetic pump for molten metal |
| CN201550009U (en) * | 2009-09-30 | 2010-08-11 | 石家庄爱迪尔电气有限公司 | Internal-external core alternating-current induction pump for molten metal transfer |
| CN102122876A (en) * | 2011-02-21 | 2011-07-13 | 中国科学院电工研究所 | Reciprocating conducting liquid permanent magnet contactless driving device |
| CN107024118A (en) * | 2015-11-05 | 2017-08-08 | 高桥谦三 | Liquation delivery pump and liquation induction system |
| CN110112888A (en) * | 2019-04-17 | 2019-08-09 | 江苏大学 | A kind of magnetic fluid pump |
| CN112803712A (en) * | 2021-01-29 | 2021-05-14 | 中国原子能科学研究院 | Liquid metal electromagnetic pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006085875A1 (en) * | 2005-02-10 | 2006-08-17 | Cyco Systems Corporation Pty Ltd | Apparatus and method for mixing, agitating and transporting molten or semi-solid metallic or metal-matrix composite materials |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100795A (en) * | 1985-04-01 | 1987-01-17 | 瑞士商凯斯史丹股份有限公司 | Conducting fluid refers to the flow control method and the device of deposite metal bath in the continuous casting especially |
| US5333646A (en) * | 1989-06-02 | 1994-08-02 | Delot Process, S.A. | Electromagnetic valve for controlling the flow of a fluid in a pipe |
| CN101325358A (en) * | 2008-04-25 | 2008-12-17 | 哈尔滨工业大学（威海） | AC superconduction magnetic fluid marine propulsor |
| JP2009262220A (en) * | 2008-04-30 | 2009-11-12 | Sukegawa Electric Co Ltd | Electromagnetic pump for molten metal |
| CN201550009U (en) * | 2009-09-30 | 2010-08-11 | 石家庄爱迪尔电气有限公司 | Internal-external core alternating-current induction pump for molten metal transfer |
| CN102122876A (en) * | 2011-02-21 | 2011-07-13 | 中国科学院电工研究所 | Reciprocating conducting liquid permanent magnet contactless driving device |
| CN107024118A (en) * | 2015-11-05 | 2017-08-08 | 高桥谦三 | Liquation delivery pump and liquation induction system |
| CN110112888A (en) * | 2019-04-17 | 2019-08-09 | 江苏大学 | A kind of magnetic fluid pump |
| CN112803712A (en) * | 2021-01-29 | 2021-05-14 | 中国原子能科学研究院 | Liquid metal electromagnetic pump |
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| CN114570919A (en) | 2022-06-03 |
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