CN208694713U - A kind of scaling powder processing system and the reflow oven comprising it - Google Patents
A kind of scaling powder processing system and the reflow oven comprising it Download PDFInfo
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- CN208694713U CN208694713U CN201821050075.0U CN201821050075U CN208694713U CN 208694713 U CN208694713 U CN 208694713U CN 201821050075 U CN201821050075 U CN 201821050075U CN 208694713 U CN208694713 U CN 208694713U
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- scaling powder
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- powder processing
- reflow oven
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Abstract
The utility model provides a kind of scaling powder processing system and the reflow oven comprising it.Scaling powder processing system described in the utility model includes: preheater and catalyst converter；The preheater and catalyst converter are set gradually along airflow direction, and are connected by pipeline；Device for catalytic treatment is provided in catalyst converter；The pipeline is metal tubes.Gaseous flux can be decomposed into CO by catalyst converter by the utility model scaling powder processing system2And H2Then O is emitted into atmosphere again, effectively reduce the harm to environment；And this can also substantially reduce accumulation of the scaling powder (FLUX) in equipment and exhaust equipment, the discharge for reducing harmful exhaust causes pollution to atmosphere, is excellent selection to the enterprise for focusing on efficiency and environmental protection.Reduce corrective maintenance time, extend maintenance period, improves the utilization rate of production line, reduced costs for enterprise.
Description
Technical field
The utility model relates to the welder fields of electronic manufacturing industry, in particular to a kind of processing of scaling powder
System and reflow oven comprising it.
Background technique
Reflow oven is the equipment of the upper indispensability of electronics manufacturing SMT (surface mount) production line, the function of reflow oven be by
Mount electronic component welding on PCB (electronic circuit board) is solidificated in PCB surface.In welding solidification process, solder (tin
Cream) in FLUX (scaling powder) can volatilize at a certain temperature, in burner hearth generate the gas containing FLUX, partially pass through air draft system
System is discharged into atmosphere, causes environmental pollution, partially in the cooling condensation accumulation of burner hearth, is caused burner hearth seriously polluted, is influenced product
Quality needs time-based maintenance.
Current reflow oven mostly only takes the mode of simple installation filter screen to filter FLUX, and effect is limited, largely
FLUX gas remain unchanged it is unprocessed be discharged into atmosphere, exist as following drawbacks:
(1) installation filter screen can only filter limited FLUX, and a large amount of Flux gases are still discharged into atmosphere to environment
It causes damages；
(2) gas liquefaction containing scaling powder or after sublimating condensation be deposited in burner hearth production equipment polluted, influence machine
The smooth work of tool component, more has liquid FLUX to be dropped on product, causes scrap of the product；
(3) maintenance washes FLUX need to use dedicated organic solvent, and solvent is volatile, there is certain toxicity, to operator and
Environment makes harm；
(4) frequent time-based maintenance equipment is needed, reduces the equipment production time, is very big damage to the client that production capacity requires
It loses.
In view of this, special propose the utility model.
Summary of the invention
The first of the utility model is designed to provide a kind of scaling powder processing system, the utility model scaling powder processing system
Gaseous flux can be decomposed into CO by catalyst converter by system2And H2Then O is emitted into atmosphere again, effectively reduce to environment
Harm；And this can also substantially reduce scaling powder (FLUX) in burner hearth and exhaust duct and accumulate, the discharge for reducing harmful exhaust is made
The pollution of pairs of atmosphere is excellent selection to the enterprise for focusing on efficiency and environmental protection.Reduce corrective maintenance time, extends guarantor
The period is supported, the utilization rate of production line is improved, is reduced costs for enterprise.
The second of the utility model is designed to provide a kind of reflow oven comprising the utility model scaling powder processing system.
In order to realize the above-mentioned purpose of the utility model, the following technical scheme is adopted:
A kind of scaling powder processing system, the scaling powder processing system include: preheater and catalyst converter；Wherein, described
Preheater and catalyst converter are set gradually along airflow direction, and are connected by pipeline；Catalytic treatment is provided in the catalyst converter
Device；The pipeline is metal tubes.
Preferably, in scaling powder processing system described in the utility model, at least one set of add is provided in the preheater
Thermal；Meanwhile temperature-detecting device and temperature control equipment are additionally provided in the preheater；Wherein, the temperature control
Device includes PID temperature conditioning unit, and to heating temperature closed-loop control.
Preferably, in scaling powder processing system described in the utility model, the preheater is tank structure, the tank body
The outside of structure is provided with overtemperature protection device；The tank structure is metal can structure.
Preferably, in scaling powder processing system described in the utility model, the device for catalytic treatment is porous honeycomb cylinder
Shape structure；The surface of device for catalytic treatment is provided with catalyst coat.
Preferably, in scaling powder processing system described in the utility model, the catalyst is noble metal catalyst；It is described
Catalyst is platinum or rhodium.
Preferably, in scaling powder processing system described in the utility model, heating device is additionally provided in the catalyst converter
And filter device；Wherein, heating device, device for catalytic treatment and filter device are set gradually along airflow direction；The mistake
Metal filter screen and/or Ceramic Balls are provided in filter device.
Preferably, in scaling powder processing system described in the utility model, the catalyst converter is tank structure；Wherein, institute
The inside for stating tank structure is additionally provided with temperature-detecting device and temperature control equipment；The temperature control equipment includes PID temperature
Unit is controlled, and to heating temperature closed-loop control；And/or the outside of the tank structure is provided with overtemperature protection device；The tank
Body structure is metal can structure.
Meanwhile the utility model additionally provides the reflow oven comprising the utility model scaling powder processing system；Wherein, described
Reflow oven is air reflow oven or protection gas reflow oven.
Preferably, the utility model reflow oven is protection gas reflow oven；Wherein, it is additionally provided in the protection gas reflow oven
Furnace gas return line, the gas backstreaming pipeline are connected by filter device with the air outlet of catalyst converter.
Further, the utility model also provides a kind of welding method, the utility model reflow in the welding method
Furnace.
Compared with prior art, the utility model has the following beneficial effects:
(1) in the utility model, device for catalytic treatment passes through the catalytic action of the platinum and/or rhodium that coat on its surface, energy
Enough enhance the activity of scaling powder gas, the redox of scaling powder (main component is hydrocarbon oxygen compound) is accelerated under high temperature
Reaction, is converted into harmless water and carbon dioxide；
(2) in the utility model, by the preheating of preheater, scaling powder gas is enabled to be in opposite high temperature,
Be conducive to quick catalysis reaction；
(3) in the utility model, closed loop PID temperature conditioning unit can ensure and heat the stability with catalytic temperature, improve
Reaction efficiency；
(4) in the utility model, using metallic tank body and pipeline, it can be improved the fire prevention heatproof of scaling powder processing system
Performance.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described.
Fig. 1 is traditional reflow oven gas filtration flow diagram；
Fig. 2 is scaling powder processing system structural schematic diagram provided in specific embodiment of the present invention；
Fig. 3 is preheater structural representation in scaling powder processing system provided in specific embodiment of the present invention
Figure；
Fig. 4 is catalyst converter structural representation in scaling powder processing system provided in specific embodiment of the present invention
Figure；
Fig. 5 is the sky provided in specific embodiment of the present invention comprising the utility model scaling powder processing system
The structural schematic diagram of gas reflow oven；
Fig. 6 is the nitrogen provided in specific embodiment of the present invention comprising the utility model scaling powder processing system
The structural schematic diagram of gas reflow oven.
Wherein, 1- preheater；2- catalyst converter；
111- electric heater 1；112- electric heater 2；120- high precision temperature control probe；130- metal can；141- air inlet
Mouthful；The gas outlet 142-；
210- electric heater；220- device for catalytic treatment；230- filter device；240- high precision temperature control probe；250- gold
Belong to tank body；261- air inlet；The gas outlet 262-.
Specific embodiment
The embodiments of the present invention are described in detail below in conjunction with embodiment, but those skilled in the art
It will be understood that the following example is merely to illustrate the utility model, and it is not construed as limitation the scope of the utility model.Embodiment
In the person that is not specified actual conditions, carry out according to conventional conditions or manufacturer's recommended conditions.Life is not specified in agents useful for same or instrument
Manufacturer person is produced, is the conventional products that can be obtained by commercially available purchase.
Reflow oven is in welding solidification process, since heating scaling powder (main component is hydrocarbon oxygen compound) can volatilize life
At gas, if not only will affect Environmental security, while also due to condensing and the burner hearth of reflow oven is caused to condense without processing
Accumulation, influences production efficiency.
It is that simple filtration processing is carried out to the gas containing fluxing agent in such a way that filter screen is installed in traditional method
Afterwards, it is directly discharged into atmosphere through exhaust pipeline, process can refer to Fig. 1.However, this filtering is merely able to the solid in gas
Grain removes, and does not have any adsorption treatment then for the gaseous flux (scaling powder vaporization at high temperature product) being mixed in gas
Effect.In view of this, the utility model has provided a kind of scaling powder processing system, and using the catalysis of catalyst converter, it will
Gaseous scaling powder carries out effective catalysis reaction and decomposes.
In the following, scaling powder processing system used in the utility model is specifically introduced in conjunction with attached drawing:
The utility model scaling powder processing system structure is referring to FIG. 2, include the preheating set gradually in the direction of the air flow
Device 1, catalyst converter 2 and necessary connecting line, such as: the air inlet pipe to import the gas containing scaling powder into preheater 1,
Connecting the connecting tube of preheater 1 and catalyst converter 2, and escape pipe derived from gas after being handled in catalyst converter 2；
Since the gas temperature after preheating is higher, in order to guarantee the safety in treatment process with efficiently, connecting tube is preferred
For metal connecting tube.
After the gas with a large amount of scaling powders that reflow oven generates when working is preheated via preheater 1, it is passed through catalyst converter 2
In, and in catalyst converter 2 by heavy metal catalyst catalytic oxidation-reduction be decomposed into nonstaining property carbon dioxide and water be discharged, from
And it avoids and is polluted brought by the gaseous flux that can not be removed by filtration and for influence caused by production.
In the utility model scaling powder processing system, the structure of preheater 1 please refers to Fig. 3；
Specific: preheater 1 is tank structure, preferably metal can 130, is internally provided with two groups of heaters, point
It Wei not electric heater 1 111 and electric heater 2 112；
Meanwhile the detector for temperature detection is additionally provided in preheater 1, preferably high precision temperature control probe 120；
The both ends of metal can 130 are respectively arranged with air inlet 141 and gas outlet 142；
The temperature of generated in reflow oven work, mixing fluxing agent gas air-flow is 140 DEG C or so, by air inlet
Mouth 141 enters in preheater 1, then after electric heater 1 111 and electric heater 2 112 heat, reaches 200 DEG C or more, so
It is passed through in catalyst converter 2 by gas outlet 142 via connecting line afterwards；
Meanwhile in order to control heating temperature, it is additionally provided with temperature control device in preheater 1, is mainly PID temperature control
Unit, heating temperature carry out closed-loop control by PID temperature conditioning unit；
Likewise, the outer surface of metal can 130 is additionally provided with overtemperature protection device in order to guarantee safety, prevent by
In the overheat of the initiations such as short circuit；Meanwhile the outer surface of metal can 130 is also wrapped on the thermal insulation material of heat-insulating flame-retardant.
In the utility model scaling powder processing system, the structure of catalyst converter 2 please refers to Fig. 4；
Likewise, catalyst converter 2 is tank structure, preferably metal can 250, both ends are provided with air inlet 261, and
Gas outlet 262；
Meanwhile electric heater 210 is disposed with along airflow direction, catalyst converter 2, device for catalytic treatment 220 and mistake
Filter device 230；
Wherein, device for catalytic treatment 220 is to react the key structure for decomposing scaling powder (gas), is porous honeycomb
Tubular (preferably drum shape) structure, material are metal or ceramics, which carries as catalyst
Body deposits one by modes such as sprayings on its surface (including tubular structure outer surface and surface of internal cellular shape hole)
Layer platinum/rhodium noble coatings, the coating play main catalytic action, enhance the activity of scaling powder gas, and make it in height
Accelerated oxidation reduction reaction under the conditions of temperature gases pyroreactions such as (mainly with) oxygen in gas, realizes the decomposition of scaling powder
(hydrocarbon oxygen compound in scaling powder is decomposed with oxygen pyroreaction under the action of catalyst)；
In filter device 230, metal filter screen and/or Ceramic Balls are provided with, the solid being mixed in gas can be helped weldering
Agent particle is adsorbed, to reduce the pressure of subsequent filter.
Meanwhile the detector for temperature detection is additionally provided in catalyst converter 2, preferably high precision temperature control probe 240；
In order to control heating temperature, it is additionally provided with temperature control device in catalyst converter 2, is mainly PID temperature control list
Member, heating temperature carry out closed-loop control by PID temperature conditioning unit；
Likewise, the outer surface of metal can 250 is additionally provided with overtemperature protection device in order to guarantee safety, prevent by
In the overheat of the initiations such as short circuit；Meanwhile the outer surface of metal can 250 is also wrapped on heat-insulating flame-retardant thermal insulation material.
Gas after being heated by preheater is passed through in catalyst converter 2 by pipeline via air inlet 261, and be passed through gas is first
First heated again by electric heater 210；
Since the length of 220 honeycomb tubular structure of device for catalytic treatment and wind speed will affect temperature in catalyst converter 2,
Under conditions of length of pipe determines, temperature can decline with the increase of wind speed, and then the temperature of FLUX gas to be purified is caused to exist
In catalytic treating process in device for catalytic treatment 220, it may appear that gas temperature is not achieved the case where catalytic temperature, thus, it needs
Gas after heating in heater 1 is heated again, so that its temperature is got a promotion and keep stable；Simultaneously as
Metal porous honeycomb cylindrical catalytic processing unit 220 radiates relatively fast, causes temperature to decline, needs supplementary heating equilibrium temperature；
Then, gas passes through device for catalytic treatment 220, and under the high temperature conditions, through the expensive of 220 surface of device for catalytic treatment
Metal coating catalytic action decomposes gaseous scaling powder by redox reaction；Then, gas further passes through filtering dress
230 are set, the little particle scaling powder being mixed with is adsorbed and is fixed；Gas after above-mentioned purification step is passed through via gas outlet 262
Further filtration, purification in the filter screen cabinet being arranged in reflow oven then drains into atmosphere, or is passed through back again via pipeline
In the burner hearth of brazier, and reuse.
Further, the utility model also provides the reflow oven comprising scaling powder processing system as above, the reflow oven
For air reflow oven or gas (such as nitrogen or inert gas) reflow oven can be protected, specific:
The structural schematic diagram of air reflow oven comprising the utility model scaling powder processing system is referring to FIG. 5, its work
Process specifically refers to as follows:
At work, since heating generates a large amount of scaling powder gases, scaling powder gas adds air reflow oven in preheater
Then heat is passed through in catalyst converter by pipeline again to the temperature of suitable catalysis reaction；
In catalyst converter, scaling powder gas is via catalytic action, contained hydrocarbon oxygen oxidation of organic compounds reduction reaction
The pollution-free substance such as water and carbon dioxide is generated, after the filtering of filter screen cabinet, is emitted into atmosphere.
Meanwhile comprising the utility model scaling powder processing system protection gas reflow oven structural schematic diagram referring to FIG. 6,
Its workflow specifically refers to as follows:
Protect gas reflow oven at work, since heating generates a large amount of scaling powder gases, scaling powder gas is in preheater
It is heated to being suitble to the temperature of catalysis reaction, be then passed through in catalyst converter by pipeline again；
In catalyst converter, scaling powder gas is via catalytic action, contained hydrocarbon oxygen oxidation of organic compounds reduction reaction
The pollution-free substance such as water and carbon dioxide is generated, after the filtering of filter screen cabinet, purified gas is led to again by pipeline
Enter the burner hearth of reflow oven, not only reduced the FLUX content in burner hearth but also reduces protection gas usage amount.
Meanwhile the utility model can also provide a kind of welding method, more specifically, be it is a kind of using the utility model such as
Air reflow oven/nitrogen reflow oven of the upper structure carries out the welding method of Reflow Soldering；
Likewise, the utility model can also provide a kind of surface mount process, in the technique in Reflow Soldering process, make
With the reflow oven of the utility model arbitrary structures as above；
Further, the utility model can also provide a kind of electronic-packaging processes, in surface mount process in the technique
In, use the reflow oven of the utility model arbitrary structures as above；
Further, the utility model can also provide a kind of preparation method of electronic device, and the preparation method is in electricity
In sub- packaging technology, using the reflow oven of the utility model arbitrary structures as above.
Meanwhile Tthe utility model system is not limited in the reflow oven for being set to SMT industry, can be applied to any need
Purified treatment hydrocarbon oxygen compound, in the equipment and place of organic compound gas.
Moreover, Tthe utility model system may be designed as independent gas purification equipment, it is extensive to be applicable in industry.
Embodiment 1
Fig. 2, Fig. 3 and Fig. 4 are please referred to, scaling powder processing system provided by the utility model includes:
The preheater 1 set gradually in the direction of the air flow, the connecting tube of catalyst converter 2 and preheater 1 and catalyst converter 2
Road, the connecting line are metal tubes.
Wherein, preheater 1 is internally provided with two groups of heaters specifically for metal can 130 for tank structure, respectively
For electric heater 1 111 and electric heater 2 112；The both ends of metal can 130 are respectively arranged with air inlet 141 and gas outlet
142；The outer surface of metal can 130 is additionally provided with overtemperature protection device, and is coated with heat-insulating flame-retardant thermal insulation material.
Meanwhile being additionally provided in preheater 1 for temperature detection is high precision temperature control probe 120 and temperature control device,
It is mainly PID temperature conditioning unit, and heating temperature carries out closed-loop control by PID temperature conditioning unit.
Meanwhile catalyst converter 2 is tank structure, specifically for metal can 250, both ends are provided with air inlet 261, and go out
Port 262；The outer surface of metal can 250 is additionally provided with overtemperature protection device, and is coated with heat-insulating flame-retardant thermal insulation material；
Meanwhile electric heater 210 is disposed with along airflow direction, catalyst converter 2, device for catalytic treatment 220 and mistake
Filter device 230；
Wherein, device for catalytic treatment 220 is porous honeycomb tubular structure, and material is metal or ceramics, and the metal/ceramic is more
Hole honeycomb tubular structure deposits one layer of platinum/rhodium precious metal catalyst by modes such as sprayings as catalyst carrier, on its surface
Coating；
Metal filter screen and/or Ceramic Balls are provided in filter device 230, the solid soldering flux that can will be mixed in gas
Particle is adsorbed, to reduce the pressure of subsequent filter.
Meanwhile high precision temperature control probe 240 and temperature control device are additionally provided in catalyst converter 2, it is mainly PID temperature control list
Member, heating temperature carry out closed-loop control by PID temperature conditioning unit.
In actual use, the generated air-flow comprising a large amount of scaling powder volatilization gas is drawn by pipeline in reflow oven
Enter in preheater 1, after being heated in preheater, is introduced into catalyst converter 2 via connecting tube；In catalyst converter 2, air-flow is by again
Organic principle hair after heating, under the noble coatings catalytic action that 220 surface of device for catalytic treatment is loaded, in scaling powder
Raw redox reaction, is broken down into water and carbon dioxide, the solid soldering flux little particle being mingled in air-flow can be further
It is adsorbed by filter device 230, reduces subsequent filter pressure.
Application example 1
Wuxi company: MR nitrogen reflow oven FCS (scaling powder processing system)；
Equipment: MR reflow oven (brand: Wei Duoli continue moral)；
Scaling powder processing system installed date: 2017.10.23；
Increase a FCS unit before the said firm MR nitrogen reflow oven filter box, is H by FLUX gas catalysis2O, CO2
Afterwards using filter box body, the work load of filter box is reduced, reduces burner hearth FLUX pollution, it can be by maintenance period weekly
It extends to even longer biweekly.
Before application the utility model scaling powder processing system, i.e. the time range in 10 days-October 23 October in 2017
It is interior, although by the filtering of filter box, but still there are a large amount of gasification scaling powders to be condensed in reflow oven；
After application the utility model scaling powder processing system, i.e. the time range in 23 days-November 2 October in 2017
Interior, welding assisted agent residuals amount significantly reduces.
Application example 2
Nanjing company Heller air reflow oven FCS (Flux Clean System) system；
Equipment: heller air reflow oven
Installed date: 2018.3
Using the original space of HELLER equipment, FCS system is installed additional among blower and gas cooling box.Blower is extracted out
FLUX gas carry out being catalyzed into CO2And H2O.Extended using the maintenance period of equipment after FCS, original will appear for one week or so helps weldering
Agent drops onto the problem of product, and existing four to five week just will appear scaling powder drippage.
Although illustrate and describing the utility model with specific embodiment, it will be appreciated that without departing substantially from this reality
Many other change and modification can be made in the case where novel spirit and scope.It is, therefore, intended that in appended power
Benefit includes all such changes and modifications belonged in the scope of the utility model in requiring.
Claims (9)
1. a kind of scaling powder processing system, which is characterized in that the scaling powder processing system includes: preheater and catalyst converter；
Wherein, the preheater and catalyst converter are set gradually along airflow direction, and are connected by pipeline；It is provided in catalyst converter
Device for catalytic treatment；
The pipeline is metal tubes.
2. scaling powder processing system according to claim 1, which is characterized in that be provided at least one set in the preheater
Heating device；
Meanwhile temperature-detecting device and temperature control equipment are additionally provided in the preheater；
Wherein, the temperature control equipment includes PID temperature conditioning unit, and to heating temperature closed-loop control.
3. scaling powder processing system according to claim 1, which is characterized in that the preheater is tank structure, external
It is provided with overtemperature protection device；
The tank structure is metal can structure.
4. scaling powder processing system according to claim 1, which is characterized in that the device for catalytic treatment is porous honeycomb
Tubular structure；
The surface of device for catalytic treatment is provided with catalyst coat.
5. scaling powder processing system according to claim 4, which is characterized in that the catalyst is platinum or rhodium.
6. scaling powder processing system according to claim 1, which is characterized in that be additionally provided with heating dress in the catalyst converter
It sets and filter device；
Wherein, heating device, device for catalytic treatment and filter device are set gradually along airflow direction；
Metal filter screen and/or Ceramic Balls are provided in the filter device.
7. scaling powder processing system according to claim 6, which is characterized in that the catalyst converter is tank structure；
Wherein, the inside of the tank structure is additionally provided with temperature-detecting device and temperature control equipment；The temperature control dress
It sets including PID temperature conditioning unit, and to heating temperature closed-loop control；
And/or the outside of the tank structure is provided with overtemperature protection device；
The tank structure is metal can structure.
8. including the reflow oven of scaling powder processing system of any of claims 1-7；Wherein, the reflow oven is sky
Gas reflow oven or protection gas reflow oven.
9. reflow oven according to claim 8, which is characterized in that the reflow oven is protection gas reflow oven；
Wherein, it is additionally provided with furnace gas return line in the protection gas reflow oven, the gas backstreaming pipeline passes through filtering
Device is connected with the air outlet of catalyst converter.
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| CN201821050075.0U CN208694713U (en) | 2018-07-03 | 2018-07-03 | A kind of scaling powder processing system and the reflow oven comprising it |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108654369A (en) * | 2018-07-03 | 2018-10-16 | 王氏港建贸易（上海）有限公司 | A kind of scaling powder processing system and the reflow oven comprising it |
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2018
- 2018-07-03 CN CN201821050075.0U patent/CN208694713U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108654369A (en) * | 2018-07-03 | 2018-10-16 | 王氏港建贸易（上海）有限公司 | A kind of scaling powder processing system and the reflow oven comprising it |
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