CN105591521B - It is a kind of for conveying the electromagnetic pump of liquid non-ferrous metal - Google Patents
It is a kind of for conveying the electromagnetic pump of liquid non-ferrous metal Download PDFInfo
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- CN105591521B CN105591521B CN201610137608.8A CN201610137608A CN105591521B CN 105591521 B CN105591521 B CN 105591521B CN 201610137608 A CN201610137608 A CN 201610137608A CN 105591521 B CN105591521 B CN 105591521B
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- conduit
- ferrous metal
- lamination stack
- liquid non
- core lamination
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K44/00—Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa
- H02K44/02—Electrodynamic pumps
- H02K44/04—Conduction pumps
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- External Artificial Organs (AREA)
Abstract
The present invention is suitable for liquid non-ferrous metal conveying equipment technical field, provides a kind of for conveying the electromagnetic pump of liquid non-ferrous metal, including power supply, impulse generator, pot body, core lamination stack heap, conduit and spout.Equipped with the distribution of several spacing and along the electromagnetism winding of conduit axial alignment on core lamination stack heap, it is set on the outside of conduit.Core lamination stack heap and electromagnetism winding adjacent thereon constitute a thrust unit, and access driven in phase pulse, and the pole between cog of core lamination stack heap generates opposite polarity transient magnetic field after powered up, several thrust units constitute a thrust group.Thrust unit in thrust group is respectively connected to the driving pulse of different timing；The shifting magnetic field chronologically converted from entrance to outlet is collectively formed in each thrust group.Electromagnetic pump application electromagnetic push of the invention pushes the movement of liquid non-ferrous metal.Without moving components such as machinery rotations, the problem of corrosion there is no pump housing moving parts, while melt and dissolved metal flow is stablized, and speed, flow are controllable.
Description
Technical field
The invention belongs to liquid non-ferrous metal conveying equipment technical fields, more particularly to a kind of pump liquid-state that is used for coloured gold
Belong to the electromagnetic pump of fluid.
Background technique
With the development of electronic technology, the welding technique of electronic circuit board experienced human weld, wave-soldering Ji Hui fluid welding
Etc. several important stages.In recent years, due to automotive electronics, power electronics, the rapid development in the fields such as signal equipment is various types of
Ventilating hole element, surface mount elements, power component and the various underloadings of type or heavy duty；High pressure or low pressure connector, radiator or
Supporting member etc. a large amount of mixed connections on pcb board load in mixture.Since the quantity of such work is increasing, quality requirement is increasingly
Height, the demand promoted to working efficiency is also more more and more urgent, and the welding method of human weld or other forms has been unable to meet PCB
Welding demand；Therefore selective wave-soldering and its technological equipment come into being.
The selective crest welder of initial production mostly uses Miniature mechanical pump to make high temperature tin stream pump, the principle of tin pump
With tradition water pump, the same, cavity, shaft, impeller high temperature resistant, corrosion-resistant material are made.Advantage is that structure is simple；The disadvantage is that
Under hot conditions lead-free solder to the corrosion rate of pump assembly quickly, need that often pump assembly is repaired and replaced.More
Importantly, mechanical impellor pumps the speed of generated tin wave jet flow, flow is difficult to control, and the stability of tin stream is poor, because
This, the speed of tin stream, the controllability of flow and stability needs further increase and just adapt to high-end pcb board welding procedure
Demand.
Summary of the invention
It is a kind of for conveying the electromagnetic pump of liquid non-ferrous metal technical problem to be solved by the present invention lies in providing, it is intended to
It solves in the prior art to make pump housing moving parts corrosion rate present in liquid metal pump using Miniature mechanical pump
Metal flow velocity, flow fast and spray are difficult to control, and the problem of the stability difference of metal stream.
The invention is realized in this way a kind of for conveying the electromagnetic pump of liquid non-ferrous metal, including power supply, chronologically produce
The raw impulse generator of two-phase or multiphase driving pulse, the pot body for being stored with liquid non-ferrous metal, core lamination stack heap, conduit and
Spout；
The pot body and conduit are provided with entrance and outlet, and the outlet of the pot body is connected to the entrance of conduit,
The spout is installed on the outlet port of the conduit；The core lamination stack heap is arranged and is distributed in the outside of the conduit, institute
State the electromagnetism winding that core lamination stack heap is equipped with the distribution of several spacing along the axial direction of conduit, the power supply, impulse generator, electromagnetism
Winding is sequentially connected electrically；
Core lamination stack heap and electromagnetism winding adjacent thereon constitute a thrust unit, several thrust units constitute one
Thrust group, the electromagnetism winding in same group of thrust unit access the driving pulse of same phase；Core lamination stack heap phase after energization
Adjacent pole between cog generates opposite polarity transient magnetic field, and each thrust unit in thrust group is respectively connected to the driving arteries and veins of different timing
Punching；The shifting magnetic field chronologically converted from entrance to outlet is collectively formed in each thrust group.
Further, the conduit includes inner catheter and outer catheter, and the inner catheter is embedded in the outer catheter, and
And between the outside of the inner catheter and the inner wall of outer catheter a distance away, formation is circulated first-class for liquid metal
The inside in road, the inner catheter forms second flow channel, and the bottom of the second flow channel and the bottom of the first runner mutually interconnect
It is logical.
Further, the electromagnetic pump of the conveying liquid non-ferrous metal, which is characterized in that the electromagnetic pump includes multiple
Core lamination stack heap, the multiple core lamination stack heap enclose the outer peripheral edge for setting and being distributed in the outer catheter at intervals.
Further, the electromagnetic pump of the conveying liquid non-ferrous metal, which is characterized in that the bottom of the second flow channel
Equipped with throttling trunnion.
Further, the electromagnetic pump of the conveying liquid non-ferrous metal, which is characterized in that the outside of the pot body is arranged
There is the upper heater for heating liquid non-ferrous metal in the pot body.
Further, the electromagnetic pump of the conveying liquid non-ferrous metal, which is characterized in that outside the outer catheter bottom end
Side is provided with the lower heater for heating liquid non-ferrous metal in the outer catheter.
Further, the electromagnetic pump of the conveying liquid non-ferrous metal, which is characterized in that the core lamination stack heap and institute
It states and is additionally provided with heat-insulated pad between the outside of conduit.
Further, the electromagnetic pump is additionally provided with control system, tin stream temperature control system and crest height TT&C system；
The control system is electrically connected with the power supply, tin stream temperature control system, crest height TT&C system, impulse generator.
Compared with prior art, the present invention beneficial effect is: the effect of electromagnetism winding of the invention in impulse generator
Under power according to timing, associated core lamination stack heap pole tooth is magnetized, and as the variation of magnetic flux generates shifting magnetic field, and makes liquid
State non-ferrous metal generates vortex of inducting, and the magnetic field interaction in magnetic field and pole tooth that this vortex is formed pushes liquid non-ferrous metal
(asynchronous) movement at a high speed.Liquid metal is constantly gushed out from spout under the promotion of electromagnetic force.Due to being revolved without using machinery
Dynamic component is transported, core lamination stack heap is not in contact directly with liquid non-ferrous metal with electromagnetism winding, therefore electricity of the invention
The problem of magnetic pumping corrodes there is no pump housing moving component, the long service life of product.Meanwhile impulse generator is adjustable driving arteries and veins
The electrical parameters such as frequency, pulsewidth and the amplitude of punching, flow velocity, the flow for the metal jet that this electromagnetic pump generates are controllable, and stability is good.
Detailed description of the invention
Fig. 1 is provided in an embodiment of the present invention a kind of for conveying the schematic front view of the electromagnetic pump of liquid non-ferrous metal.
Fig. 2 is the schematic perspective view inside electromagnetic pump shown in Fig. 1.
Fig. 3 is longitudinal schematic cross-sectional view inside electromagnetic pump shown in Fig. 1.
Main circuit schematic diagram when Fig. 4 is the access power supply of electromagnetic pump shown in Fig. 1.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
It as shown in Figures 1 to 4, is a kind of preferred embodiment of the invention, it is a kind of for conveying the electricity of liquid non-ferrous metal
Magnetic pumping including power supply (being not shown in figure), chronologically generates the impulse generator 1 of two-phase or multiphase driving pulse, is stored with
Pot body 2, core lamination stack heap 3, conduit 4 and the spout 5 of liquid non-ferrous metal.
Pot body 2 and conduit 4 are provided with entrance and outlet.The outlet of pot body 2 is connected to the entrance of conduit 4, spout 5
It is installed on the outlet port of conduit 4, the latus rectum of spout 5 is 2~10mm.Core lamination stack heap 3 is set to and is evenly distributed with the outer of conduit 4
Side, core lamination stack heap 3 are equipped with the electromagnetism winding 6 of several spacing distribution along the axial direction of conduit 4.Power supply, impulse generator 1, electricity
Magnetic winding 6 is sequentially connected electrically.
Core lamination stack heap 3 and two adjacent thereon electromagnetism windings 6 constitute a thrust unit 60, same thrust unit 60
In two electromagnetism windings 6 access the driving pulse of same phase, and the adjacent the two poles of the earth tooth of core lamination stack heap 3 after powered up
Between generate opposite polarity two magnetic field.Several thrust units 60 constitute a thrust group 600, and each thrust group 600 pushes away
60 quantity of power unit is identical as the number of phases of driving pulse.Each thrust unit 60 in same thrust group 600 is respectively connected to difference
The driving pulse of timing；Also, in same thrust group 600 all thrust units 60 according to the driving pulse respectively accessed when
Sequence, arranges along the direction away from 4 entrance of conduit, and the chronologically transformation from 4 entrance of conduit to outlet is collectively formed in each thrust group 600
Shifting magnetic field.
Specifically, above-mentioned conduit 4 includes inner catheter 41 and outer catheter 42, and inner catheter 41 is embedded in outer catheter 42, and
And between the outside of inner catheter 41 and the inner wall of outer catheter 42 a distance away, the first runner to circulate for liquid metal is formed
101, the inside of inner catheter 41 forms second flow channel 102.The bottom of second flow channel 102 and the bottom of first runner 101 mutually interconnect
It is logical, and the bottom of second flow channel 102 is equipped with throttling trunnion 7.According to funnelling principle it is found that fluid passes through throttling trunnion
Biggish by section into relative cross-section after 7, the flow velocity of fluid can slow down, and keep the jet flow of outlet more stable, can be further
Play the effect for the steady wave that throttles.
The electromagnetic pump of the present embodiment can be used for pushing various liquid non-ferrous metals, therefore, when use the scolding tin of melting as quilt
When the object of push, the electromagnetic pump of the present embodiment is the peak generator device that can be used as welding.The electromagnetic pump of the present embodiment is
It can be powered by two-phase, three-phase, multiphase or DC power supply, by DC inversion, be arranged, corresponding link is supplied after stablizing and is used.Arteries and veins
The effect for rushing generator 1 is chronologically to generate driving pulse, supplies electromagnetism winding 6.Fig. 4 is referred to, is connect for a kind of three-phase bridge Y
Circuit, it by impulse generator 1 generate three-phase PWM pulse, be then passed to pwm pulse shaping distributor, in sequence with
Polarity is applied to final power metal-oxide-semiconductor, and A, B, C three-phase timing are separated by 120 degree of electrical angles and feed again via pulse transformer
To the thrust group 600 of three-phase.The electromagnetism winding 6 of three thrust units 60 in the thrust group 600 of three-phase is successively powered according to timing,
Associated 3 pole tooth of core lamination stack heap is magnetized, and as the variation of magnetic flux generates shifting magnetic field, makes in inside and outside conduit runner
Tin fluid is inducted vortex, the magnetic field interaction in magnetic field and pole tooth that this vortex is formed, with the movement of shifting magnetic field, tin fluid
It send with constantly being pushed away, with (asynchronous) movement of high speed.And constantly gush out from spout 5, stable dynamic tin wave 200 is formed, with
Butt welding point carries out Selective Soldering.Meanwhile impulse generator 1 is adjustable the frequency, pulsewidth and amplitude of driving pulse, the gold of ejection
Category stream stability is good, and flow velocity, flow are controllable, can adapt to the demand of high-end pcb board welding procedure.In addition, the present embodiment is adopted
Tin stream 200 is pushed with electromagnetic push, without using mechanical rotation movement component, core lamination stack heap 3 does not have with electromagnetism winding 6 and tin
The problem of stream 200 is directly in contact, therefore the electromagnetic pump of the present embodiment corrodes there is no pump housing moving parts, the use of product
Service life is long.
Above-mentioned electromagnetic pump includes multiple core lamination stack heaps 3, and multiple core lamination stack heaps 3 enclose at intervals sets and be distributed in outer lead
The outer peripheral edge of pipe 42.The shifting magnetic field that each core lamination stack heap 3 electromagnetism winding 6 associated with it is formed is according to certain rules from upper
To lower movement, operating condition is similar to servo motor or DC brushless motor.For example, being centered around the iron core placed side by side of outer catheter 42
Laminated stack 3 can be arranged by the multi-set parallels such as 4,6,8,10.There can be the shifting magnetic field of multiple magnetic poles generations on contour position
The tin stream of melting in runner is acted on simultaneously, at this point, magnetic pole is equivalent to the stator of linear motor, and the tin stream of melting is in mobile magnetic
Excitation effect under, inductive loop and as mover drives tin stream to be quickly transferred to spout 5 from runner, is formed stable
Dynamic tin wave 200.Active force caused by the electromagnetic push component be made of multiple core lamination stack heaps 3, for the tin stream of melting
For 200, driving effect be it is quite strong and powerful, therefore, the electromagnetic pump being made of polyphase multipolar magnetic circuit and electromagnetism winding 6
Powerful uniform permanent steady thrust magnetic field can be generated, so that the tin stream wave crest formed is strong and powerful, size is appropriate, and height is permanent steady,
Component is shaken containing specific electromagnetism arteries and veins, is conducive to improve effect of impregnation and the depth of penetration when component welding, can significantly improve
Welding quality is horizontal.
The outside of above-mentioned pot body 2 is provided with upper heater 81 for heating tin stream 200 in pot body 2 and for heat preservation
Upper insulating layer 91.Be provided on the outside of 42 bottom end of outer catheter lower heater 82 for heating tin stream 200 in outer catheter 42 and
Lower insulating layer 92 for heat preservation.By above-mentioned heating and heat preservation component, heating effect can be both improved when pot body 2 heats
Rate, and tin stream 200 can be made to keep higher stable operating temperature (>=280 DEG C).On the other hand, in order to avoid hot environment pair
The influence of core lamination stack heap 3 and electromagnetism winding 6 is additionally provided with heat-insulated pad between core lamination stack heap 3 and the outside of conduit 4
10.The thickness of heat-insulated pad 10 need to play heat-insulated effect, meanwhile, and do not answer it is blocked up, in order to avoid weaken through the magnetic of outer catheter 42
Field intensity.
In order to further strengthen the welding quality of electromagnetic pump, the electromagnetic pump of the present embodiment is additionally provided with control system, tin stream
Temperature control system and crest height TT&C system (being not shown in figure).Control system and power supply, tin stream temperature control system, crest height of wave
Spend TT&C system, impulse generator electrical connection, the flow velocity of tin stream, flow, wave crest stability, crest height, welding temperature, PCB
The generation etc. of solder joint coordinates, can be by control system and relevant circuit system closed-loop control.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of for conveying the electromagnetic pump of liquid non-ferrous metal, which is characterized in that including power supply, chronologically generate two-phase or more
The impulse generator of phase driving pulse, the pot body for being stored with liquid non-ferrous metal, core lamination stack heap, conduit and spout；
The pot body and conduit are provided with entrance and outlet, and the outlet of the pot body is connected to the entrance of conduit, the spray
Mouth is installed on the outlet port of the conduit；The core lamination stack heap is set to the outside of the conduit, the core lamination stack heap
It is distributed along the length direction of conduit equipped with several spacing and along the electromagnetism winding of conduit axial alignment, the power supply, pulse hair
Raw device, electromagnetism winding are sequentially connected electrically；
Core lamination stack heap and electromagnetism winding adjacent thereon constitute a thrust unit, several thrust units constitute a thrust
Group, the electromagnetism winding in same group of thrust unit access the driving pulse of same phase；After energization two adjacent electromagnetism around
Group generates opposite polarity transient magnetic field, and each thrust unit in same thrust group is respectively connected to the driving pulse of different timing；
The shifting magnetic field chronologically converted from entrance to outlet is collectively formed in each thrust group；
The conduit includes inner catheter and outer catheter, and the inner catheter is in the outer catheter, and the inner catheter
Outside and outer catheter inner wall between a distance away, form the first runner that circulates for liquid metal, the inner catheter
Inside form second flow channel, the bottom of the bottom of the second flow channel and the first runner is interconnected；
The bottom of the second flow channel is equipped with throttling trunnion；
The upper heater for heating liquid non-ferrous metal in the pot body is provided on the outside of the pot body.
2. the electromagnetic pump of conveying liquid non-ferrous metal as described in claim 1, which is characterized in that the electromagnetic pump includes multiple
Core lamination stack heap, the multiple core lamination stack heap enclose the outer peripheral edge for setting and being distributed in the outer catheter at intervals.
3. the electromagnetic pump of conveying liquid non-ferrous metal as described in claim 1, which is characterized in that outside the outer catheter bottom end
Side is provided with the lower heater for heating liquid non-ferrous metal in the outer catheter.
4. the electromagnetic pump of the conveying liquid non-ferrous metal as described in any one of claim 1 to 2, which is characterized in that described
Heat-insulated pad is additionally provided between core lamination stack heap and the outside of the conduit.
5. the electromagnetic pump of the conveying liquid non-ferrous metal as described in any one of claim 1 to 2, which is characterized in that described
Electromagnetic pump is additionally provided with control system, tin stream temperature control system and crest height TT&C system；The control system and the electricity
Source, tin stream temperature control system, crest height TT&C system, impulse generator electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610137608.8A CN105591521B (en) | 2016-03-10 | 2016-03-10 | It is a kind of for conveying the electromagnetic pump of liquid non-ferrous metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610137608.8A CN105591521B (en) | 2016-03-10 | 2016-03-10 | It is a kind of for conveying the electromagnetic pump of liquid non-ferrous metal |
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| Publication Number | Publication Date |
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| CN105591521A CN105591521A (en) | 2016-05-18 |
| CN105591521B true CN105591521B (en) | 2019-02-26 |
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| CN201610137608.8A Active CN105591521B (en) | 2016-03-10 | 2016-03-10 | It is a kind of for conveying the electromagnetic pump of liquid non-ferrous metal |
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| CN106533131B (en) * | 2016-11-18 | 2023-07-14 | 云南电网有限责任公司电力科学研究院 | DC converter valve with pulse excitation device |
| CN107335888B (en) * | 2017-05-19 | 2020-08-28 | 深圳市阿拉玎光电自动化有限公司 | Wave crest height correcting device and method for wave crest soldering |
| CN109611310B (en) * | 2018-12-29 | 2023-09-29 | 中国原子能科学研究院 | Electromagnetic field circular arc conduit electromagnetic pump and electromagnetic pump system |
| GB201903320D0 (en) * | 2019-03-11 | 2019-04-24 | Emp Tech Limited | Electromagnetic device and system for pumping, circulationg or transferring non-ferrous molten metal |
| GB2610529B (en) * | 2020-09-21 | 2023-10-25 | Univ Jiangsu | Annular linear induction electromagnetic pump having axial guide vanes |
| CN112311195B (en) * | 2020-09-21 | 2021-11-23 | 江苏大学 | Cylindrical linear induction electromagnetic pump with axial guide vanes |
| US11283342B1 (en) | 2021-01-07 | 2022-03-22 | Jiangsu University | Annular linear induction electromagnetic pump having axial guide vanes |
| CN114640233B (en) * | 2022-05-09 | 2022-08-23 | 浙江大学 | Electromagnetic pump |
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|---|---|---|---|---|
| EP0232661A1 (en) * | 1986-01-15 | 1987-08-19 | Framatome | Electromagnetic pump for conductive liquid with backflow by means of magnetic repulsion |
| CN1777751A (en) * | 2003-04-21 | 2006-05-24 | 应达公司 | Electromagnetic pump |
| CN1802073A (en) * | 2005-01-04 | 2006-07-12 | 日东电子发展（深圳）有限公司 | Electromagnetic pump single/double wave crest generator |
| CN101003103A (en) * | 2006-01-17 | 2007-07-25 | 株式会社田村制作所 | Solder groove and welding device |
| CN205430029U (en) * | 2016-03-10 | 2016-08-03 | 日东电子科技(深圳)有限公司 | A electromagnetic pump for carrying liquid non ferrous metal |
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2016
- 2016-03-10 CN CN201610137608.8A patent/CN105591521B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0232661A1 (en) * | 1986-01-15 | 1987-08-19 | Framatome | Electromagnetic pump for conductive liquid with backflow by means of magnetic repulsion |
| CN1777751A (en) * | 2003-04-21 | 2006-05-24 | 应达公司 | Electromagnetic pump |
| CN1802073A (en) * | 2005-01-04 | 2006-07-12 | 日东电子发展（深圳）有限公司 | Electromagnetic pump single/double wave crest generator |
| CN101003103A (en) * | 2006-01-17 | 2007-07-25 | 株式会社田村制作所 | Solder groove and welding device |
| CN205430029U (en) * | 2016-03-10 | 2016-08-03 | 日东电子科技(深圳)有限公司 | A electromagnetic pump for carrying liquid non ferrous metal |
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| CN105591521A (en) | 2016-05-18 |
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Address after: 518000 second, third, fourth floor of G1 building, Bai Shi ha factory, Baoan District Fuyong street, Shenzhen, Guangdong. Applicant after: Violet Technology (Shenzhen) Co. Ltd. Nitto Address before: 518103 Guangdong Shenzhen Baoan District Fuyong Town, Whitehead Industrial East Road East Road Industrial Park Applicant before: Suneast Electronic Technology (Shenzhen) Co., Ltd. |
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Address after: 518000 Guangdong city of Shenzhen province Baoan District Fuyong street baishixia building G1 building second, third, fourth layer Patentee after: Ridong intelligent equipment technology (Shenzhen) Co., Ltd Address before: 518000 Guangdong city of Shenzhen province Baoan District Fuyong street baishixia building G1 building second, third, fourth layer Patentee before: UNISPLENDOUR SUNEAST TECHNOLOGY (SHENZHEN) Co.,Ltd. |