CN211564503U - Reaction device for silver plating on surface of metal powder - Google Patents
Reaction device for silver plating on surface of metal powder Download PDFInfo
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- CN211564503U CN211564503U CN201922035257.1U CN201922035257U CN211564503U CN 211564503 U CN211564503 U CN 211564503U CN 201922035257 U CN201922035257 U CN 201922035257U CN 211564503 U CN211564503 U CN 211564503U
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- reaction
- reduction
- reaction kettle
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 73
- 239000000843 powder Substances 0.000 title claims abstract description 21
- 239000002184 metal Substances 0.000 title claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 13
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims description 26
- 229910052709 silver Inorganic materials 0.000 title claims description 24
- 239000004332 silver Substances 0.000 title claims description 24
- 238000007747 plating Methods 0.000 title claims description 13
- 239000012295 chemical reaction liquid Substances 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 230000009467 reduction Effects 0.000 claims abstract description 22
- 238000006722 reduction reaction Methods 0.000 claims description 56
- 238000003756 stirring Methods 0.000 claims description 40
- 230000000536 complexating effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 239000012530 fluid Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 238000010668 complexation reaction Methods 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000011162 core material Substances 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011257 shell material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002848 electrochemical method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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Abstract
The utility model discloses a silvered reaction unit in metal powder surface, its technical scheme main points include that reduction reation kettle fixes with at least one reduction reation kettle upper end complex reaction cauldron, be provided with respectively in reduction reation kettle and the complex reaction cauldron to adding the reducing fluid of reducing fluid in the reduction reation kettle and add the device to the reaction liquid that adds the reaction liquid in the complex reaction cauldron, reduction reation kettle and complex reaction cauldron's bottom all is provided with the discharge gate of taking the valve. The utility model discloses in having and making the reaction liquid add the device through the reaction liquid and get into complex reaction cauldron, treat that the discharge gate of reaction rethread complex reaction cauldron gets into reduction reation kettle after complete, and then add the device through reduction liquid and get into the reduction reation kettle back and complex reaction cauldron and get into the liquid reaction in the reduction reation kettle to complete, the corresponding discharge gate of rethread is emitted to reach and make complex reaction and reduction carry out and then save time simultaneously respectively with the effect of cost.
Description
Technical Field
The utility model relates to a silvering equipment technical field, more specifically say that it relates to a silvered reaction unit in metal powder surface.
Background
Commercial and household electronic products enter various fields of people's lives, and accordingly, how to effectively solve the problems of electromagnetic wave interference and shielding of electronic products becomes more and more important. At present, in order to avoid the electromagnetic wave interference and shielding problems of electronic products, electromagnetic shielding conductive paint is generally used. The raw materials for producing the conductive coating comprise superfine silver powder, silver-coated copper powder, silver-coated nickel powder and the like. Wherein, silver and copper all have the good advantage of the good first order electromagnetic shield effect of electric conductivity. However, copper has the disadvantage of being easily oxidized, thereby affecting the use of copper materials. Meanwhile, nickel has good chemical stability and electromagnetic shielding performance, but pure nickel powder is not as good as silver powder in conductivity, thereby affecting the use of nickel powder. Therefore, the research is carried out in the industry aiming at the silver layer coated copper and/or nickel powder, and the silver coated copper and/or nickel powder is a functional composite material with a special core-shell structure, has the performances of a shell silver layer and a core copper and nickel material, and has a plurality of special physical and chemical properties different from those of the core and shell materials.
The methods for preparing the core-shell structure coated particles mainly include a thermal decomposition-reduction method, a chemical plating method, a colloidal particle template method, a codeposition method and an electrochemical method. The research on the preparation method of the bimetallic powder of copper and silver, nickel and silver and the like mainly focuses on the chemical plating method.
However, when the electroless plating method is used, it is difficult to maintain the precision of controlling the reaction conditions while increasing the yield. Therefore, when the electroless plating reaction cannot be sufficiently performed in time, the problems of non-uniform silver coating, reduced product quality and reduced use stability will occur, and improvement is needed.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a silvered reaction device for the surface of metal powder, which has the effects of realizing the continuous surface silvering of a large amount of powder, uniform coating and high stability.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a reaction device for plating silver on the surface of metal powder comprises a reduction reaction kettle and at least one complex reaction kettle fixed at the upper end of the reduction reaction kettle, wherein a reducing liquid adding device for adding a reducing liquid into the reduction reaction kettle and a reaction liquid adding device for adding a reaction liquid into the complex reaction kettle are respectively arranged in the reduction reaction kettle and the complex reaction kettle, and discharge holes with valves are respectively arranged at the bottoms of the reduction reaction kettle and the complex reaction kettle.
By adopting the technical scheme, the reaction liquid enters the complex reaction kettle through the reaction liquid adding device, enters the reduction reaction kettle through the discharge hole of the complex reaction kettle after the reaction is completed, and is discharged through the corresponding discharge hole after the reduction liquid enters the reduction reaction kettle through the reduction liquid adding device and reacts with the liquid entering the reduction reaction kettle through the complex reaction kettle to the completion; the complex reaction process and the reduction reaction process of silver plating are effectively separated, so that the complex reaction and the reduction reaction are respectively carried out simultaneously, the effects of effectively saving time and cost are achieved, and the uniformity of a silver layer on the surface of the powder is effectively improved.
The utility model discloses further set up to: and a main dispersing device and an auxiliary dispersing device are respectively arranged in the reduction reaction kettle and the complex reaction kettle.
By adopting the technical scheme, the main dispersing device and the auxiliary dispersing device respectively play a role in effectively dispersing materials in the corresponding reduction reaction kettle and the corresponding complex reaction kettle.
The utility model discloses further set up to: the main dispersing device comprises a main motor, a main stirring shaft arranged in the vertical direction and connected with a rotating shaft of the main motor, and a main stirring paddle fixed at the bottom of the main stirring shaft; the auxiliary dispersing device comprises an auxiliary motor, an auxiliary stirring shaft which is arranged in the vertical direction and connected with a rotating shaft of the auxiliary motor, and an auxiliary stirring paddle fixed at the bottom of the auxiliary stirring shaft.
By adopting the technical scheme, the main motor is started and drives the main stirring shaft to rotate, so that the main stirring paddle fixed at the bottom of the main stirring shaft rotates and effectively disperses materials in the reduction reaction kettle; the auxiliary motor starts and drives the auxiliary stirring shaft to rotate, so that the auxiliary stirring paddle fixed at the bottom of the auxiliary stirring shaft rotates and effectively disperses materials in the complex reaction kettle, the structure is simple, the operation is easy, and the stirring dispersion efficiency is high.
The utility model discloses further set up to: the reducing liquid adding device comprises a reducing liquid storage tank and a reducing liquid drop ring, one end of the reducing liquid drop ring is connected with the reducing liquid storage tank, and the other end of the reducing liquid drop ring is fixed in the reduction reaction kettle; the reaction liquid adding device comprises a reaction liquid storage tank and a reaction liquid drop ring, wherein one end of the reaction liquid drop ring is connected with the reaction liquid storage tank, and the other end of the reaction liquid drop ring is fixed in the complexation reaction kettle; the reduction liquid drop ring is sleeved on the main stirring shaft, and the reaction liquid drop ring is sleeved on the auxiliary stirring shaft.
By adopting the technical scheme, the reaction liquid and the reducing liquid are respectively dripped through the reaction liquid drop ring and the reducing liquid drop ring, so that the dispersion effect of the reaction liquid and the reducing liquid is further improved.
The utility model discloses further set up to: and the bottom parts of the reduction liquid drop ring and the reaction liquid drop ring are uniformly distributed with leakage holes with the diameter of 0.01-10 mm.
By adopting the technical scheme, the leakage hole with the diameter of 0.01-10mm plays a role in effectively dispersing and guiding the reducing liquid and the reaction liquid to be dripped into the corresponding reduction reaction kettle and the corresponding complex reaction kettle.
The utility model discloses further set up to: and an ultrasonic disperser is arranged on the periphery of the reduction reaction kettle.
By adopting the technical scheme, the ultrasonic disperser plays a role in fully dispersing powder in reaction, and avoids the problem of connection.
To sum up, the utility model discloses following beneficial effect has:
1. the dispersion effect of the reaction solution and the reducing solution is remarkably improved;
2. in the complex reaction, the reaction solution is quickly and uniformly diffused in a dropwise adding mode, so that the uniformity of a silver layer on the surface of the powder is obviously improved;
3. the complex reaction and the reduction reaction are separated, so that the complex reaction and the reduction reaction are carried out simultaneously, and the time and the cost are saved.
Drawings
FIG. 1 is a schematic view of the structure of a reaction apparatus of this example.
Description of reference numerals: 1. a sub-motor; 11. an auxiliary stirring shaft; 12. an auxiliary stirring paddle; 2. a reaction liquid storage tank; 21. a reaction droplet ring; 3. a complex reaction kettle; 4. a discharge hole of the reaction kettle; 5. a main motor; 51. a main stirring shaft; 52. a main stirring paddle; 6. a reducing liquid storage tank; 61. reducing the droplet ring; 7. an ultrasonic disperser; 8. a reduction reaction kettle; 9. and a bottom discharge hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the reaction device for plating silver on the surface of metal powder comprises a reduction reaction kettle 8 and at least one complexing reaction kettle 3 fixed at the upper end of the reduction reaction kettle 8. And carrying out complex reaction in the complex reaction kettle 3, and after the complex reaction is completed, introducing the material into a reduction reaction kettle 8. Because complex reaction kettle 3 is fixed in reduction reation kettle 8's top, consequently will effectively avoid remaining of material in the pipeline when promoting the efficiency that the material got into reduction reation kettle 8. A reducing liquid adding device for adding the reducing liquid into the reduction reaction kettle 8 and a reaction liquid adding device for adding the reaction liquid into the complexation reaction kettle 3 are respectively arranged in the reduction reaction kettle 8 and the complexation reaction kettle 3. And a bottom discharge port 9 with a valve and used for discharging is arranged at the bottom of the reduction reaction kettle 8, and a reaction kettle discharge port 4 with a valve and used for conveying materials to the reduction reaction kettle 8 is arranged at the bottom of the complexation reaction kettle 3.
When the device is used, reaction liquid enters the complex reaction kettle 3 through the reaction liquid adding device, enters the reduction reaction kettle 8 through the reaction kettle discharge port 4 at the bottom of the complex reaction kettle 3 after the reaction is completed, and then reacts with materials entering the reduction reaction kettle 8 from the complex reaction kettle 3 to be completed after the reduction liquid enters the reduction reaction kettle 8 through the reduction liquid adding device, and then is discharged through the bottom discharge port 9 at the bottom of the reduction reaction kettle 8; because the complexing reaction process and the reduction reaction process of silver plating are effectively separated, the complexing reaction and the reduction reaction are respectively carried out simultaneously, the effects of effectively saving time and cost are achieved, and the uniformity of the silver layer on the surface of the powder is effectively improved.
In order to avoid the problem of connection, the periphery of the reduction reaction kettle 8 is also provided with an ultrasonic disperser 7, so that the ultrasonic disperser 7 can play a role in fully dispersing powder in the reaction, and the uniformity of a silver layer on the surface of the powder is further improved.
As shown in fig. 1, a main dispersing device and a sub dispersing device are provided in the reduction reactor 8 and the complexation reactor 3, respectively. The main dispersing device comprises a main motor 5, a main stirring shaft 51 which is arranged along the vertical direction and is connected with the main motor 5 through a rotating shaft, and a main stirring paddle 52 fixed at the bottom of the main stirring shaft 51; the auxiliary dispersing device comprises an auxiliary motor 1, an auxiliary stirring shaft 11 which is arranged along the vertical direction and is connected with the auxiliary motor 1 through a rotating shaft, and an auxiliary stirring paddle 12 which is fixed at the bottom of the auxiliary stirring shaft 11. Therefore, when the main motor 5 is started, the main stirring shaft 51 is driven to rotate, so that the main stirring paddle 52 fixed at the bottom of the main stirring shaft 51 rotates and effectively disperses the materials in the reduction reaction kettle 8; will drive vice (mixing) shaft 11 and rotate when vice motor 1 starts, and then make the vice stirring rake 12 who fixes in vice (mixing) shaft 11 bottom rotate and carry out effective dispersion to the material in the complex reaction cauldron 3, simple structure and easily operation, stirring dispersion efficiency is high.
It should be noted that the reducing liquid adding device comprises a reducing liquid storage tank 6 and a reducing liquid drop ring 61, one end of which is connected with the reducing liquid storage tank 6 and the other end of which is fixed in the reduction reaction kettle 8; the reaction liquid adding device comprises a reaction liquid storage tank 2 and a reaction liquid drop ring 21, one end of the reaction liquid drop ring is connected with the reaction liquid storage tank 2, and the other end of the reaction liquid drop ring is fixed in the complexation reaction kettle 3. The reduction liquid drop ring 61 is sleeved on the main stirring shaft 51, and the reaction liquid drop ring 21 is sleeved on the auxiliary stirring shaft 11. When the reaction apparatus is used, the reaction liquid is dropped through the reaction liquid drop ring 21 and the reducing liquid is dropped through the reducing liquid drop ring 61, so that the dispersion effect of the reaction liquid and the reducing liquid is further improved. Meanwhile, the bottom parts of the reducing liquid drop ring 61 and the reaction liquid drop ring 21 are uniformly distributed with leakage holes with the diameter of 0.01-10mm, so that the leakage holes with the diameter of 0.01-10mm play a role in effectively dispersing and guiding the reducing liquid and the reaction liquid to drop into the corresponding reducing reaction kettle 8 and the corresponding complexing reaction kettle 3.
The above is only the preferred embodiment of the present invention, the protection scope of the present invention is not limited to the above embodiments, but all the cases belong to the technical solution of the present invention under the thought all belong to the protection scope of the present invention. It should be noted that modifications and decorations, which would occur to those skilled in the art without departing from the principle of the present invention, should also be considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides a reaction unit of metal powder surface silvering which characterized in that: the device comprises a reduction reaction kettle (8) and at least one complex reaction kettle (3) fixed at the upper end of the reduction reaction kettle (8), wherein a reducing liquid adding device for adding a reducing liquid into the reduction reaction kettle (8) and a reaction liquid adding device for adding a reaction liquid into the complex reaction kettle (3) are respectively arranged in the reduction reaction kettle (8) and the complex reaction kettle (3), and discharge holes with valves are respectively arranged at the bottoms of the reduction reaction kettle (8) and the complex reaction kettle (3).
2. The reaction device for silver plating on the surface of metal powder according to claim 1, which is characterized in that: and a main dispersing device and an auxiliary dispersing device are respectively arranged in the reduction reaction kettle (8) and the complex reaction kettle (3).
3. The reaction device for silver plating on the surface of metal powder according to claim 2, which is characterized in that: the main dispersing device comprises a main motor (5), a main stirring shaft (51) which is arranged along the vertical direction and is connected with the rotating shaft of the main motor (5), and a main stirring paddle (52) which is fixed at the bottom of the main stirring shaft (51); the auxiliary dispersing device comprises an auxiliary motor (1), an auxiliary stirring shaft (11) which is arranged in the vertical direction and is connected with the rotating shaft of the auxiliary motor (1), and an auxiliary stirring paddle (12) which is fixed at the bottom of the auxiliary stirring shaft (11).
4. The reaction device for silver plating on the surface of metal powder according to claim 3, which is characterized in that: the reducing liquid adding device comprises a reducing liquid storage tank (6) and a reducing liquid drop ring (61) of which one end is connected with the reducing liquid storage tank (6) and the other end is fixed in the reduction reaction kettle (8); the reaction liquid adding device comprises a reaction liquid storage tank (2) and a reaction liquid drop ring (21) of which one end is connected with the reaction liquid storage tank (2) and the other end is fixed in the complexing reaction kettle (3); the reduction liquid drop ring (61) is sleeved on the main stirring shaft (51), and the reaction liquid drop ring (21) is sleeved on the auxiliary stirring shaft (11).
5. The reaction device for silver plating on the surface of metal powder according to claim 4, which is characterized in that: and the bottom parts of the reduction liquid drop ring (61) and the reaction liquid drop ring (21) are uniformly distributed with leakage holes with the diameter of 0.01-10 mm.
6. The reaction device for silver plating on the surface of metal powder according to claim 1, which is characterized in that: an ultrasonic disperser (7) is arranged on the periphery of the reduction reaction kettle (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922035257.1U CN211564503U (en) | 2019-11-22 | 2019-11-22 | Reaction device for silver plating on surface of metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922035257.1U CN211564503U (en) | 2019-11-22 | 2019-11-22 | Reaction device for silver plating on surface of metal powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211564503U true CN211564503U (en) | 2020-09-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922035257.1U Active CN211564503U (en) | 2019-11-22 | 2019-11-22 | Reaction device for silver plating on surface of metal powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211564503U (en) |
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2019
- 2019-11-22 CN CN201922035257.1U patent/CN211564503U/en active Active
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