CN209664258U - A kind of solenoid type magnetic stirrer - Google Patents
A kind of solenoid type magnetic stirrer Download PDFInfo
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- CN209664258U CN209664258U CN201822131891.0U CN201822131891U CN209664258U CN 209664258 U CN209664258 U CN 209664258U CN 201822131891 U CN201822131891 U CN 201822131891U CN 209664258 U CN209664258 U CN 209664258U
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Abstract
The utility model discloses a kind of solenoid type magnetic stirrers, comprising: shell, solenoid coil, crucible, Resistant heating unit and heat insulation layer；Coil support wall is provided in shell, solenoid coil is wrapped on coil support wall, and solenoid coil can provide radial and axial electromagnetic force after being powered for metal bath；Resistant heating unit is used to heat and keep the molten condition of metal for crucible；Heat insulation layer protects solenoid coil for completely cutting off high temperature.In the utility model, different number, position solenoid coil can produce different radial and axial distribution of electromagnetic force, wherein, typical force distribution is the axially distributed unevenness of radial electromagnetic force, metal bath is set to generate the turbulent motion of " double loop " track, the more traditional electromagnetic agitation of turbulence greatly improves, and increases the randomness of bath movement, therefore the more traditional magnetic stirrer of stirring efficiency of solenoid type magnetic stirrer obtains larger raising.
Description
Technical field
The utility model belongs to electromagnetic casting field, more particularly, to a kind of solenoid type magnetic stirrer.
Background technique
With science and technology and manufacturing fast development, single metal material is difficult to meet industrial design requirement, because
This exploitation has the composite material of multiple material excellent properties into one of current research hotspot.Wherein, grain reinforced metal
The features such as based composites prepare simple, superior performance by it, cost is relatively low, obtains in every field such as Aeronautics and Astronautics, automobiles
To being widely applied.Mechanical mixing method is stirred the metal bath that enhancing particle is added by rotation oar, makes enhancing
Grain is sufficiently mixed with metal bath, is that prepare particles reiforced metal-base composition be current most mature method, but machinery stirs
Mix there is also easily bringing into impurity, mixing power are uneven, the defects of stringent required agitating paddle material high temperature resistant, and electromagnetic agitating technology
It with blind area non-contact, without mixing, is not easy to bring the advantages such as impurity, improvement metal microstructure into, particulate reinforced metal-based multiple
Condensation material casting field has great application prospect.Currently, there are mainly three types of different stirring shapes for traditional electromagnetic agitating technology
Formula: (1) revolving-field type, metal bath are rotated under the action of rotating excitation field by circumferential electromagnetic force；(2) travelling-magnetic-field formula,
Metal bath is moved in a straight line under the action of travelling-magnetic-field by the constant electromagnetic force in direction；(3) helical magnetic field formula is revolved
Turn magnetic field to be superimposed with travelling-magnetic-field, metal bath is spinned by peripheral force and axial force simultaneously under the action of helical magnetic field
Rise or fall movement.The utility model patent of publication number CN107116191A and CN103182495A point out combined type respectively
Spiral magnetic stirrer can produce above-mentioned three kinds of different agitating modes under different working modes.But traditional electromagnetic agitation
Still have following defect: (1) mixing efficiency is not high, stirs electromagnetic force and makes metal bath movement disorder degree smaller without radial component,
It is unfavorable for the mixing of metal bath internal heat transfer and metal bath and enhancing particle；(2) mixing speed is become skin by electromagnetic force
The constraint of effect accelerates metal bath flow velocity and needs to improve operating current frequency, and the raising of frequency is so that electromagnetism suffered by melt
Power is mainly distributed on melt close to winding area, and central area is hardly by electromagnetic force；(3) metal bath rotates in a circumferential direction
Liquid level forms center Maelstrom, easily makes particle that agglomeration occur in particles reiforced metal-base composition casting, reduces multiple
The performance of condensation material；(4) magnetic stirrer winding is more, and structure is complicated, not easy to repair.
Utility model content
In view of the drawbacks of the prior art, the purpose of this utility model is to provide a kind of solenoid type magnetic stirrer, purports
The prior art is being solved in particles reiforced metal-base composition casting since whipped form is single, metal bath movement disorder
Spend smaller the technical issues of leading to metal bath and enhancing poor Particle Mixing Result, inefficiency.
The utility model provides a kind of solenoid type magnetic stirrer, comprising: shell, solenoid coil, crucible, resistance
Silk heating unit and heat insulation layer；Coil support wall is provided in the shell, the solenoid coil is wrapped in the coil branch
It supports on wall, the solenoid coil can provide radial and axial electromagnetic force after being powered；The Resistant heating unit is used for as institute
State the molten condition that crucible heats and keeps metal；The heat insulation layer protects the solenoid coil for completely cutting off high temperature.
Wherein, when work, the magnetic field that the solenoid coil generates at its height center is greater than the magnetic field at both ends, metal
Electromagnetic force suffered by the middle part of melt is greater than electromagnetic force suffered by both ends, and the movement tendency that metal bath inwardly flows generation is entire molten
Body forms middle part inward flow, and " double loop " flow trace that both ends are flowed outward is this similar to churned mechanically " double
Circuit " turbulent motion can efficiently be stirred entire melt.
The coil is wrapped in when solenoid coil is single coil as one embodiment of the utility model
On supporting walls；The magnetic field that the solenoid coil generates is smaller at thiol maximum both ends, and molten metal is same in crucible
The electromagnetic force that moment is subject to also is in the big characteristic distributions small in ends in middle part.
It is arranged when solenoid coil is single coil in metal bath as one embodiment of the utility model
The lower end in outside, when work, the electromagnetic force that metal bath lower end is subject to is larger, and the electromagnetic force that upper end is subject to is smaller, lower end metal
Melt flows radially inward and upper end metal bath flows outward, and metal bath forms the circulation loop of an entirety, flowing
Form is turbulent flow.
It is arranged when solenoid coil is single coil in metal bath as one embodiment of the utility model
The upper end in outside, when work, the electromagnetic force that metal bath upper end is subject to is larger, and the electromagnetic force that lower end is subject to is smaller, upper end metal
Melt inwardly flows and lower end metal bath flows outward, and metal bath forms the circulation loop of an entirety, and liquid form is
Turbulent flow.
As another embodiment of the utility model, when solenoid coil is two coils, two coils are set respectively
The top and bottom on the outside of metal bath are set, and the height center about crucible is symmetrical.
As another embodiment of the utility model, when solenoid coil is two coils, two coils are set respectively
Set the top and bottom on the outside of metal bath, and the height center asymmetric distribution about crucible.
Wherein, the solenoid coil is that solid copper conductor or hollow copper tubing can be led to when using hollow copper tubing in pipe
Water further increases the heat dissipation performance of coil.
In the utility model embodiment, solenoid type magnetic stirrer further include: frequency converter and power supply, the frequency converter
One end connect the solenoid coil, the other end of the frequency converter connects the power supply, the frequency converter can 0~
Arbitrarily change the alive frequency of solenoid coil institute between 100Hz, described in the power supply can arbitrarily change between 0~400A
The alive virtual value size of solenoid coil institute.
In the utility model embodiment, Resistant heating unit includes: resistance wire, thermocouple and temperature regulation circuit；
The resistance wire is used for heating crucible, the thermocouple for detecting crucible temperature and by temperature feedback to temperature regulation circuit,
The temperature regulation circuit is maintained at crucible temperature in user's set temperature according to thermocouple feedback.
The utility model has the following technical effect that
(1) stirring efficiency is high.Since solenoid coil generates radial and axial electromagnetic force, and radial electromagnetic force is along axial point
Cloth is uneven, causes metal bath to form similar churned mechanically flow circuits, forms of motion is turbulent flow, the more traditional electromagnetism of turbulence
Stirring greatly improves, and increases the randomness of metal bath movement, therefore the stirring efficiency of solenoid type magnetic stirrer relatively passes
System magnetic stirrer obtains larger raising, while also having both blind area non-contact, without mixing, being not easy to bring into that impurity, to improve metal micro-
The advantages of seeing the tradition electromagnetic agitation such as structure.
(2) control is simple and whipped form is diversified.It only needs to change solenoidal position and combination can produce different points
The electromagnetic force of cloth feature, therefore can be fixed according to the metal bath to be mixed of different physical characteristics or the metal bath of the particle containing enhancing
Different whipped forms is made, metal continuous cast, a variety of fields such as particles reiforced metal-base composition casting, semi-solid casting are suitable for
Scape.
(3) limitation of the raising of power frequency to mixing effect is reduced.When power frequency improves, electromagnetic force increases, but
Due to skin effect, electromagnetic force is mainly distributed on the outside of metal bath, and the electromagnetic stirring force that inside is subject to is smaller, and solenoid type
Magnetic stirrer is applied to the electromagnetic force of metal bath based on radial force, and metal bath will generate radial velocity, and on the outside
It is circulated between inside, reduces mixing power minor impact inside metal bath.
(4) metal bath liquid level non-stop layer whirlpool is formed in whipping process, therefore in particles reiforced metal-base composition
In casting, it not will lead to enhancing particle and reunite in nearly meniscus region.
(5) primary structure of field generator for magnetic is solenoid coil, and structure is simple, and size is small, and performance is stablized, the service life
It is long.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of solenoid type magnetic stirrer provided by the embodiment of the utility model；
Fig. 2 is the magnetic induction line schematic diagram in the magnetic field that solenoid coil generates；
Fig. 3 (a) be metal bath in magnetic field, induction field, induced current and electromagnetic force phase relation schematic diagram；
Fig. 3 (b) is the typical field of force of solenoid type magnetic stirrer, flow field schematic diagram；
Fig. 4 (a) is the sectional view in the unicoil mode stirring Fluid field of solenoid type magnetic stirrer；
Fig. 4 (b) is to stir the sectional view of Fluid field in tradition machinery blender；
Fig. 5 is the structure chart and flow field sectional view of the utility model first embodiment；
Fig. 6 is the structure chart and flow field sectional view of the utility model second embodiment；
Fig. 7 is the structure chart and flow field sectional view of the utility model 3rd embodiment；
Fig. 8 is the structure chart and flow field sectional view of the utility model fourth embodiment；
Fig. 9 is the structure chart and flow field sectional view of the 5th embodiment of the utility model.
In figure, 1 is shell, and 2 be case top lid, and 3 be solenoid coil, and 4 be crucible, and 5 be resistive heater, and 6 be insulation
Layer, 7 be metal bath (molten metal).
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The utility model is applied to electromagnetic casting and material electromagnetic processing field, particular for metal continuous cast, semi-solid casting
It makes and magnetic stirrer used in particles reiforced metal-base composition casting.The utility model provides a kind of structure letter
Single, long working life, whipped form is various, and the high solenoid type blender of stirring efficiency can drive metal bath to do turbulent flow fortune
It is dynamic, it realizes and metal bath is stirred or quickly and evenly mixes metal bath with solid particle.
Solenoid type blender provided by the utility model includes: shell, case top lid, solenoid coil, crucible, resistance
Silk heating unit and heat insulation layer；Shell plays support, isolation and protection；Case top lid plays isolation protective effect；The spiral shell
The winding of spool coil is inside housings on coil support wall；The crucible is surround by resistance wire, is used as container；The resistance
Silk heating unit is the molten condition that crucible heats and keeps metal；The heat insulation layer is located on the outside of resistance wire, and effect is to protect
Solenoid coil is protected, resistance wire high temperature is completely cut off.
In the utility model embodiment, solenoid coil has single and two kinds of forms of multiple combinations.Single line solenoid
Circle can produce that thiol is stronger, the weaker electromagnetic force in both ends, be suitable for metal continuous cast；Multiple toroidal windings can have different numbers
The combination of amount, position generates the electromagnetic stirring forces of different distributions, and combining form can be special according to different usage scenarios, different physics
Property metallic matrix and enhancing particle change.
In the utility model embodiment, solenoid coil connects frequency converter and power supply, and power supply is that frequency converter and coil mention
For electric energy, and can arbitrarily change the alive virtual value size of solenoid coil institute between 0~400A, frequency converter can 0~
Arbitrarily changing the alive frequency of coil institute between 100Hz and keeps current amplitude constant according to electromagnetic induction principle, frequency is higher,
The electromagnetic stirring force of generation is bigger, and due to skin effect, the region of electromagnetic force is also smaller, although the utility model provides
Solenoid type magnetic stirrer can provide radial electromagnetic force to reduce power frequency and improve limitation to mixing effect, but it is insufficient
To be completely counterbalanced by, metal bath and enhancing particle without same physical characteristic correspond to different optimal current frequencies in stirring
And size, frequency converter and power supply enable the utility model to be optimal on power frequency and size in different usage scenarios.
Solenoid coil form is not limited to solid copper conductor, and the mode that hollow copper tubing water flowing can be used further increases it and dissipates
Thermal energy power.
In the utility model embodiment, Resistant heating unit is made of resistance wire, thermocouple and temperature regulation circuit.
Resistance wire is used for heating crucible, and for detecting crucible temperature and by temperature feedback to temperature regulation circuit, temperature is adjusted thermocouple
Circuit can be fed back according to thermocouple is maintained at crucible temperature in user's set temperature.
In the utility model, energization solenoid coil generates alternating magnetic field B, as shown in Fig. 2, the magnetic field by radial component and
Axial component composition, which inspires induction field E in metal bath, according to the law of electromagnetic induction it is found that induction field E
Delayed phase alternating magnetic fieldSince metal bath is inductive load, the phase of the induced current density J in melt will
Lag induction fieldAccording to Ampere force formula, electromagnetic force suffered by unit volume metal bathSince there is radial and axial component in magnetic field, metal bath is by electromagnetic force axially and radially.Axial magnetic
Power can accelerate the movement of metal bath in the axial direction, improve the speed and turbulence of bath movement.For radial electromagnetic force, due to
The influence of the lagging phase α of current density causes metal bath in a power cycles by electromagnetic force radially inward
Action time and numerical value be all larger than electromagnetic force (i.e. t in Fig. 3 (a) radially2>t1,), therefore metal
Melt generates the movement tendency inwardly flowed, and with the increase of working time, the flow velocity of metal bath constantly enhances, until movement
Resistance and electromagnetic force reach dynamic equilibrium.
Because the magnetic field that solenoid coil generates at its height center is greater than the magnetic field at both ends, metal bath middle part
Suffered electromagnetic force is greater than electromagnetic force suffered by both ends, is become according to above-mentioned analysis known metal melt by the movement inwardly flowed is generated
Gesture, due to the metal bath conservation of mass, final melt will form middle part inwardly flowing, " double loop " flowing that both ends are flowed outward
Track, it is this that efficiently entire melt can be stirred similar to churned mechanically " double loop " turbulent motion.Therefore, originally
The solenoid type magnetic stirrer that utility model provides has both the advantages of mechanical agitator and traditional magnetic stirrer.
For further description solenoid type magnetic stirrer provided by the embodiment of the utility model, referring now to attached drawing
And details are as follows for combination specific example:
First embodiment:
As shown in Figure 1, solenoid type blender provided by the utility model includes: shell 1, case top lid 2, line solenoid
Circle 3, crucible 4, Resistant heating unit 5 and heat insulation layer 6；Shell 1 plays support, isolation and protective effect；Case top lid 2 plays isolation
Protective effect；Solenoid coil 3 is wrapped on 1 Inside coil supporting walls of shell, and height is more smaller than crucible 4；Crucible 4 is by resistance
Silk is surround, as stirring container；Resistant heating unit 5 forms (thermocouple by resistance wire, thermocouple and temperature regulation circuit
It is not drawn into in temperature regulation circuit figure), resistance wire is used for heating crucible and keeps the molten condition of metal, and thermocouple is for examining
Survey crucible temperature and by temperature feedback to temperature regulation circuit, temperature regulation circuit can be fed back according to thermocouple protects crucible temperature
It holds in user's set temperature；Heat insulation layer 6 is located on the outside of resistance wire, and effect is protection solenoid coil, and isolation resistance wire is high
Aerosil can be used when metal melting temperature is lower as insulation layer material, when metal melting temperature is higher for temperature
The hollow layers of copper of Shi Keyong is insulated by way of water cooling.
As shown in figure 5, blender coil is made of single solenoid coil 3.The magnetic field generated due to solenoid coil 3
In thiol maximum, both ends are smaller, therefore molten metal 7 is big by two in the middle part of the electromagnetic force that synchronization is subject to also is in crucible
Hold small distribution.As shown in Fig. 2, in a power cycles of solenoid coil 3, coil 3 generates alternating magnetic field B, the magnetic field by
Radial component and axial component composition, the magnetic field inspire induction field E in metal bath 7, can according to the law of electromagnetic induction
Know, the delayed phase alternating magnetic field of induction field ESince metal bath 7 is inductive load, the induced current density J in melt
Phase will be late by induction fieldAccording to Ampere force formula, electromagnetism suffered by unit volume metal bath
PowerSince there is radial and axial component in magnetic field, metal bath is by electromagnetic force axially and radially.Axial electricity
Magnetic force can accelerate the movement of metal bath in the axial direction, improve the speed and turbulence of bath movement.For radial electromagnetic force, electricity
The lagging phase α of current density will lead to effect of the metal bath 7 in a power cycles by electromagnetic force radially inward
Time and numerical value are all larger than electromagnetic force radially, as shown in Fig. 3 (a), t2>t1,(to be radially outward positive
Direction), and because 3 middle part of solenoid coil big characteristics of magnetic field distribution and the metal bath conservation of mass small in ends, middle part metal
Melt will inwardly flow, and both ends metal bath flows outward, complete circulation track be formed, with the increase of working time, gold
The flow velocity for belonging to melt constantly enhances, until the resistance of motion and electromagnetic force reach dynamic equilibrium.
As shown in Fig. 4 (a), middle part metal bath is inwardly moved to flowing up and down again after near axis by electromagnetic force,
It is this that efficiently entire melt can be stirred similar to churned mechanically " double loop " turbulent motion (shown in such as Fig. 4 (b))
It mixes.Therefore, solenoid type magnetic stirrer provided by the utility model has both the excellent of mechanical agitator and traditional magnetic stirrer
Point.
The present embodiment is suitable for metal continuous cast, semi-solid casting etc., especially suitable for particles reiforced metal-base composition
Casting.The core procedure of the described particles reiforced metal-base composition casting is the mixed of metal bath and enhancing solid particle
It closes, enhancing particle is the sunk type solid particle that density is slightly larger than metallic matrix, and in static state, particle can be under slower speed
It is heavy.Under the present embodiment, the power of movement is circulated up by fluid positioned at the subregional particle in 7 upper half of metal bath, is hindered
Hinder its sinking；Power positioned at the subregional particle in 7 lower half of metal bath by the downward shuttling movement of fluid first accelerates to sink,
Again by shuttling movement to 7 middle part of metal bath, the circulation of entire fluid is so that density is slightly larger than the enhancing particle of metallic matrix
It is uniformly distributed in metal bath 7.
Second embodiment:
The present embodiment the difference from the first embodiment is that the present embodiment use two solenoid coils 3-1 and 3-2,
Two solenoid coil 3-1 and 3-2 are reduced compared with first embodiment coil turn, therefore height reduces, and is separately connected a set of electricity
Source and frequency converter.
As shown in fig. 6, two solenoid coils 3-1 and 3-2 are located at the top and bottom in 7 outside of metal bath, and
It is symmetrical about 4 height center of crucible, since magnetic field is concentrated mainly near solenoid coil 3-1 and 3-2, metal
The electromagnetic force that 7 both ends of melt are subject to is larger, and the electromagnetic force that middle part is subject to is smaller, and both ends metal bath inwardly flows, and middle part is golden
Belong to melt to flow outward, metal bath forms the circulation loop of an entirety, and liquid form is turbulent flow, and loop direction and first is in fact
It is opposite to apply example.
The present embodiment is suitable for metal continuous cast, semi-solid casting etc., especially suitable for particles reiforced metal-base composition
Casting.The core procedure of the described particles reiforced metal-base composition casting is the mixed of metal bath and enhancing solid particle
It closes, enhancing particle is the floating type solid particle that density is slightly less than metallic matrix, and in static state, particle can be in slower speed
It is floating.Under the present embodiment, power positioned at the subregional particle in 7 upper half of metal bath by the downward shuttling movement of fluid hinders
It floats；The power of movement is circulated up by fluid positioned at the subregional particle in 7 lower half of metal bath, first accelerates to float up to gold
Belong to 7 middle part of melt, then by shuttling movement to 7 bottom of metal bath, the circulation of entire fluid is so that density is slightly less than Metal Substrate
The enhancing particle of body is uniformly distributed in metal bath 7.
3rd embodiment:
The present embodiment is the difference from the first embodiment is that the present embodiment is located at metal bath 7 using solenoid coil 3
The lower end in outside, and solenoid coil 3 is reduced compared with first embodiment coil turn, therefore height reduces.Solenoid coil 3 connects
A set of power supply and frequency converter.
As shown in fig. 7, solenoid coil 3 is located at the lower end in 7 outside of metal bath, since magnetic field is concentrated mainly on solenoid
Near coil 3, therefore the electromagnetic force that metal bath lower end is subject to is larger, and the electromagnetic force that upper end is subject to is smaller, and lower end metal is molten
Body inwardly flows and upper end metal bath flows outward, and metal bath forms the circulation loop of an entirety, and liquid form is rapids
Stream, loop direction are opposite with fourth embodiment.
The present embodiment is suitable for metal continuous cast, semi-solid casting etc., especially suitable for particles reiforced metal-base composition
Casting.The core procedure of the described particles reiforced metal-base composition casting is the mixed of metal bath and enhancing solid particle
It closes, enhancing particle is that density is greater than metallic matrix, and particle can be with the sunk type solid particle of fast speed sinking in static state.
Under the present embodiment, metal bath 7, which flows up, drives particle to move toward melt liquid level, and by circulating so that sunk type
Enhancing particle is uniformly distributed in metal bath 7.
Fourth embodiment:
The present embodiment is the difference from the third embodiment is that the present embodiment is located at metal bath 7 using solenoid coil 3
The upper end in outside.Solenoid coil 3 connects a set of power supply and frequency converter.
As shown in figure 8, solenoid coil 3 is located at the upper end in 7 outside of metal bath, since magnetic field is concentrated mainly on solenoid
Near coil 3, therefore the electromagnetic force that metal bath upper end is subject to is larger, and the electromagnetic force that lower end is subject to is smaller, and upper end metal is molten
Body inwardly flows and lower end metal bath flows outward, and metal bath forms the circulation loop of an entirety, and liquid form is rapids
Stream.
The present embodiment is suitable for metal continuous cast, semi-solid casting etc., especially suitable for particles reiforced metal-base composition
Casting.The core procedure of the described particles reiforced metal-base composition casting is the mixed of metal bath and enhancing solid particle
It closes, enhancing particle is that density is less than metallic matrix, and particle can be with the floating type solid particle of fast speed floating in static state.
Under the present embodiment, metal bath 7, which flows downward, drives particle to move toward crucible bottom, and by circulating so that floating type
Enhancing particle is uniformly distributed in metal bath 7.
5th embodiment:
The present embodiment is the difference from the second embodiment is that two the solenoid coils 3-1 and 3-2 that the present embodiment uses
In the height direction about 4 height center mal-distribution of crucible, two solenoid coils 3-1 and 3-2 are separately connected a set of electricity
Source and frequency converter.
As shown in figure 9, two solenoid coils 3-1 and 3-2 are located at the top and bottom in 7 outside of metal bath, and
About 4 height center mal-distribution of crucible, lower end-coil 3-2 is closer apart from 4 height center of crucible.Since magnetic field mainly collects
In near solenoid coil 3-1 and 3-2, therefore the electromagnetic force that 7 both ends of metal bath are subject to is larger, coil 3-1 and 3-2 it
Between the electromagnetic force that is subject to of region it is smaller, both ends metal bath inwardly flows, and converges at the height center of coil 3-1 and 3-2 simultaneously
Flowing outward, metal bath form the circulation loop of an entirety, and liquid form is turbulent flow, loop direction and first embodiment phase
Seemingly.
The present embodiment is suitable for metal continuous cast, semi-solid casting etc., especially suitable for particles reiforced metal-base composition
Casting.The core procedure of the described particles reiforced metal-base composition casting is the mixed of metal bath and enhancing solid particle
It closes, the sunk type enhancing grain density that the present embodiment is applicable in is between first embodiment and 3rd embodiment.
Except above-described embodiment, solenoid coil 3 can have different number, the combination of position meets a variety of different liquid forms
Requirement, can specifically be matched according to different usage scenarios, the metallic matrix of different physical characteristic and enhancing particle.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of solenoid type magnetic stirrer characterized by comprising shell, solenoid coil, crucible, Resistant heating
Unit and heat insulation layer；
Coil support wall is provided in the shell, the solenoid coil is wrapped on the coil support wall, the helical
Pipeline circle can provide radial and axial electromagnetic force after being powered；
The Resistant heating unit is used to heat and keep the molten condition of metal for the crucible；The heat insulation layer be used for every
Exhausted high temperature protects the solenoid coil；
When work, the magnetic field that the solenoid coil generates at its height center is greater than the magnetic field at both ends, metal bath middle part
Suffered electromagnetic force is greater than electromagnetic force suffered by both ends, and metal bath will generate the movement tendency of inward flow, in melt composition
Portion is inwardly flowed, " double loop " flow trace that both ends are flowed outward, this to be similar to churned mechanically " double loop " turbulent flow fortune
It is dynamic that efficiently entire melt can be stirred.
2. solenoid type magnetic stirrer as described in claim 1, which is characterized in that when solenoid coil is single coil
When, it being wrapped on the coil support wall, the magnetic field that the solenoid coil generates is smaller at thiol maximum, both ends,
Molten metal is also in the big distribution small in ends in middle part in the electromagnetic force that synchronization is subject in crucible.
3. solenoid type magnetic stirrer as described in claim 1, which is characterized in that when solenoid coil is single coil
When, the lower end on the outside of metal bath is set, and when work, the electromagnetic force that metal bath lower end is subject to is larger, what upper end was subject to
Electromagnetic force is smaller, lower end metal bath inward flow and upper end metal bath flows outward, metal bath formed one it is whole
The circulation loop of body, liquid form are turbulent flow.
4. solenoid type magnetic stirrer as described in claim 1, which is characterized in that when solenoid coil is single coil
When, the upper end on the outside of metal bath is set, and when work, the electromagnetic force that metal bath upper end is subject to is larger, what lower end was subject to
Electromagnetic force is smaller, upper end metal bath inward flow and lower end metal bath flows outward, metal bath formed one it is whole
The circulation loop of body, liquid form are turbulent flow.
5. solenoid type magnetic stirrer as described in claim 1, which is characterized in that when solenoid coil is two coils
When, two coils are separately positioned on the top and bottom on the outside of metal bath, and the height center about crucible is symmetrical.
6. solenoid type magnetic stirrer as described in claim 1, which is characterized in that when solenoid coil is two coils
When, two coils are separately positioned on the top and bottom on the outside of metal bath, and the height center asymmetric distribution about crucible.
7. solenoid type magnetic stirrer as claimed in any one of claims 1 to 6, which is characterized in that the solenoid coil is
Solid copper conductor or hollow copper tubing.
8. solenoid type magnetic stirrer as claimed in any one of claims 1 to 6, which is characterized in that the solenoid type electromagnetism
Blender further include: frequency converter and power supply, one end of the frequency converter connect the solenoid coil, the frequency converter it is another
End connects the power supply, and the frequency converter can arbitrarily change the alive frequency of the solenoid coil institute between 0~100Hz,
The power supply can arbitrarily change the alive virtual value size of the solenoid coil institute between 0~400A.
9. solenoid type magnetic stirrer as claimed in any one of claims 1 to 6, which is characterized in that the Resistant heating list
Member includes: resistance wire, thermocouple and temperature regulation circuit；
The resistance wire is used for heating crucible, and the thermocouple is for detecting crucible temperature and temperature feedback being adjusted electricity to temperature
Road, the temperature regulation circuit are maintained at crucible temperature in user's set temperature according to thermocouple feedback.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351929A (en) * | 2018-12-18 | 2019-02-19 | 华中科技大学 | A kind of solenoid type magnetic stirrer |
| CN111780550A (en) * | 2020-07-10 | 2020-10-16 | 苏州振湖电炉有限公司 | Variable-frequency induction smelting and two-zone stirring power supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351929A (en) * | 2018-12-18 | 2019-02-19 | 华中科技大学 | A kind of solenoid type magnetic stirrer |
| CN111780550A (en) * | 2020-07-10 | 2020-10-16 | 苏州振湖电炉有限公司 | Variable-frequency induction smelting and two-zone stirring power supply system |
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