CN114892255A - Electroplating solution recycling system and control method thereof - Google Patents
Electroplating solution recycling system and control method thereof Download PDFInfo
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- CN114892255A CN114892255A CN202210312066.9A CN202210312066A CN114892255A CN 114892255 A CN114892255 A CN 114892255A CN 202210312066 A CN202210312066 A CN 202210312066A CN 114892255 A CN114892255 A CN 114892255A
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- 238000009713 electroplating Methods 0.000 title claims abstract description 126
- 238000004064 recycling Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000000746 purification Methods 0.000 claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 238000011084 recovery Methods 0.000 claims abstract description 43
- 238000007599 discharging Methods 0.000 claims abstract description 36
- 238000001914 filtration Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims description 51
- 239000000463 material Substances 0.000 claims description 43
- 238000007747 plating Methods 0.000 claims description 37
- 238000007664 blowing Methods 0.000 claims description 33
- 230000000903 blocking effect Effects 0.000 claims description 28
- 238000001035 drying Methods 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 14
- 239000000706 filtrate Substances 0.000 claims description 14
- 239000013078 crystal Substances 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 9
- 238000002425 crystallisation Methods 0.000 claims description 8
- 230000008025 crystallization Effects 0.000 claims description 8
- 238000007670 refining Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 32
- 229910000029 sodium carbonate Inorganic materials 0.000 description 16
- 238000012546 transfer Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000284 extract Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000008713 feedback mechanism Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/16—Regeneration of process solutions
- C25D21/18—Regeneration of process solutions of electrolytes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses an electroplating solution recycling system and a control method thereof, and the electroplating solution recycling system comprises an electroplating pool, a recovery pool, a purification device and a filtering device, wherein a large amount of electroplating solution is filled in the electroplating pool, the electroplating pool is internally provided with the electroplating device, the purification device comprises a purification tank, a cooling mechanism and a feeding mechanism, the feeding mechanism is used for extracting the electroplating solution to the purification tank, the cooling mechanism comprises a cooling coil and a refrigerator, the tank body comprises an inner tank and an outer tank, a heat exchange cavity is arranged between the inner tank and the outer tank, the cooling coil is arranged in the heat exchange cavity, the refrigerator is arranged on one side of the tank body, the refrigerator is connected with the cooling coil, the lower end of the tank body is provided with a discharging mechanism, the recovery pool is arranged below the tank body, and the filtering device is arranged between the recovery pool and the discharging mechanism. The electroplating solution recycling system and the control method thereof provided by the invention can recycle the electroplating solution and reduce the electroplating cost.
Description
Technical Field
The invention belongs to the technical field of electroplating, and particularly relates to a plating solution recycling system and a control method thereof.
Background
Electroplating is a process of plating a thin layer of other metals or alloys on the surface of some metals by using the principle of electrolysis, and is a process of attaching a layer of metal film on the surface of a metal or other material product by using the action of electrolysis, thereby having the effects of preventing metal oxidation (such as corrosion), improving wear resistance, conductivity, light reflection, corrosion resistance (such as copper sulfate and the like), enhancing the appearance and the like. The zinc-plated nickel contains sodium hydroxide in the reactant needed in the electroplating process, and sodium carbonate is reacted in the electroplating process because the zinc-plated nickel cannot avoid contacting carbon dioxide in the air. As the concentration of sodium carbonate in the electroplating solution increases, the electroplating efficiency of the electroplating solution decreases. In the prior art, enterprises do not particularly aim at a method for removing sodium carbonate in the electroplating process, and the electroplating liquid in an electroplating pool is replaced after long-term use, such as after one year of use. However, direct replacement of the plating solution has the following disadvantages: 1. because the electroplating pool is generally large in capacity and the amount of electroplating solution filled in the electroplating pool is also large, a large amount of electroplating solution needs to be prepared for one-time replacement, the cost is high, and the workload is large; 2. when the electroplating solution is replaced, the original electroplating solution needs to be extracted firstly, and then the new electroplating solution is put in, and the replacement can be completed within a certain time, and electroplating operation cannot be performed within the time, so that the electroplating work is slow; 3. the higher the sodium carbonate concentration per replacement of plating bath, the further the plating efficiency is decreased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a plating solution recycling system and a control method thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
a plating solution recycling system comprises an electroplating pool, a recovery pool, a purification device and a filtering device, wherein a large amount of plating solution is filled in the electroplating pool, the electroplating pool is internally provided with the electroplating device, the purification device comprises a purification tank, a cooling mechanism and a feeding mechanism, the purification tank comprises a tank body, the lower end of the tank body is provided with a plurality of supporting legs, the upper end of the tank body is provided with a tank cover, the tank cover is provided with a stirring mechanism, the stirring mechanism comprises a stirring motor, a stirring shaft and a stirrer, the stirring motor is fixedly arranged on the tank cover, the upper end of the stirring shaft is connected with the stirring motor, the other end of the stirring shaft is arranged in the tank body, the stirrer is arranged on the stirring shaft, the cooling mechanism comprises a cooling coil and a refrigerating machine, the tank body comprises an inner tank and an outer tank, a heat exchange cavity is arranged between the inner tank and the outer tank, the cooling coil is arranged in the heat exchange cavity, the refrigerator is arranged on one side of the tank body, the refrigerator is connected with the cooling coil, the feeding mechanism comprises a first pump body, a first feeding pipeline and a first feeding pipeline, one end of the first feeding pipeline is connected with the electroplating pool, the other end of the first feeding pipeline is connected with the first pump body, the output end of the first pump body is connected with one end of the first feeding pipeline, the other end of the first feeding pipeline is connected with the tank cover, the lower end of the tank body is provided with a material discharging mechanism, the recovery tank is arranged below the tank body, a material returning mechanism is arranged between the recovery tank and the electroplating tank, the feed back mechanism comprises a feed back pump body, the feed back pump body is connected with the recovery tank and the electroplating tank through a feed back pipeline, and the filtering device is arranged between the recovery tank and the discharging mechanism.
Preferably, the lower extreme of the jar body is equipped with the bin outlet, the bin outlet is equipped with first connection flange dish, drop feed mechanism includes the blowing ware, the upper end of blowing ware is equipped with second connection flange dish, second connection flange dish with first connection flange dish phase-match, be equipped with the blowing pole in the blowing ware, the upper end of blowing pole is equipped with the material valve block that hinders, the middle part of second connection flange dish is equipped with the blowing hole, the blowing hole with the material valve block phase-match, the lower extreme of blowing ware is equipped with the detachable end cap, the end cap with blowing ware sealing connection, the middle part of end cap is equipped with the guiding hole, the guiding hole with blowing pole phase-match, one side of blowing ware is equipped with the blowing pipe of downward sloping.
Preferably, drop feed mechanism includes actuating mechanism, actuating mechanism includes elevator frame, lifting rack and elevator motor, the last lift guide slot that is equipped with of elevator frame, lifting rack with lifting guide slot sliding connection, elevator motor is connected with the gear, the gear with the lifting rack phase-match, one side of lift guide slot is equipped with the bar hole of stepping down, the lower extreme fixedly connected with link rod of blowing pole, the other end of link rod passes the bar hole of stepping down with the lifting rack links to each other.
Preferably, the upper end of the material blocking valve plate is provided with a material blocking cover plate, the radius of the material blocking cover plate is larger than that of the material blocking valve plate, the lower end of the material blocking cover plate is provided with a sealing ring, and the upper end of the material blocking cover plate is provided with a conical spine portion.
Preferably, the purification device includes secondary purification mechanism, secondary purification mechanism includes the second pump body, second material loading pipeline and second charge pipeline, the second pump body is installed one side of recovery pond, the one end of second material loading pipeline with the second pump body links to each other, the other end of second material loading pipeline with the recovery pond links to each other, the one end of second charge pipeline with the output of the second pump body links to each other, the other end of second charge pipeline with the cover links to each other.
Preferably, filter equipment includes conveyer belt, transfer gear and conveying axle, the conveying axle passes through the drive of conveying motor and rotates, the transfer gear sets up conveying epaxial, the conveyer belt cladding is in outside the transfer gear, be equipped with the hole of permeating water on the conveyer belt uniformly, the conveyer belt set up in the below of bin outlet.
Preferably, the other end of conveyer belt is equipped with collecting box and drying device, the bottom of collecting box is equipped with the solid agitator, drying device includes fan, air heater and stoving board, the stoving board installation the inboard of collecting box, be equipped with a plurality of mouths of blowing that evenly set up on the stoving board, be equipped with the stoving chamber in the stoving board, the mouth of blowing with the stoving chamber is linked together, the air heater is installed the air outlet of fan, the air heater pass through the breather pipe with the stoving chamber is linked together.
Preferably, the agitator includes upper blade agitator and lower floor's blade agitator, upper blade agitator and lower floor's blade agitator are all installed on the (mixing) shaft, lower floor's blade agitator is installed the end of (mixing) shaft, upper agitator is installed the top of lower floor's blade agitator, upper agitator's radius is greater than lower floor's blade agitator's radius.
Preferably, the plating solution recycling system includes a controller including a timing module.
A control method of a plating solution recycling system includes the following steps:
step S1: purifying, namely extracting 1-2% of electroplating solution from the plating solution pool, pumping the electroplating solution into a purification tank, keeping the temperature in the purification tank below 5 ℃, keeping stirring the electroplating solution in the purification tank at a constant speed, and fully stirring for 24-48 h;
step S2: filtering, namely discharging the crystallized electroplating solution downwards, filtering by a filtering device, and dropping the filtrate into a recovery tank and the crystals into a collection box;
step S3: re-purifying, namely pumping the filtrate in the recovery tank into a purification tank again, maintaining the temperature in the purification tank below 5 ℃, keeping stirring the electroplating solution in the purification tank at a constant speed, fully stirring for 6-8 hours, discharging the electroplating solution after re-purification downwards, filtering by a filtering device, dropping the filtrate in the recovery tank, crystallizing and dropping in a collection tank;
step S4: recycling, repeating the step S3 until the crystallization is sufficient, pumping the filtrate in the recovery tank back to the electroplating tank, and repeating the operation step S1 after 14-30 days.
Compared with the prior art, the electroplating solution recycling system and the control method thereof disclosed by the invention have the beneficial effects that:
1. according to the electroplating pool, part of electroplating solution is continuously extracted from the electroplating pool for purification, and sodium carbonate crystals in the electroplating solution are discharged, so that the concentration of the sodium carbonate in the electroplating solution can be reduced, the electroplating efficiency of the electroplating solution can be improved, the electroplating solution in the electroplating pool does not need to be replaced periodically, namely a large amount of electroplating solution does not need to be stored, the storage cost can be reduced, and meanwhile, the workload of replacing the electroplating solution can be reduced;
2. when the sodium carbonate in the electroplating solution is purified, only part of the electroplating solution is extracted each time, so that the normal use of an electroplating pool can be ensured not to be influenced, the electroplating process can not be influenced, the normal operation of the electroplating process can be ensured, and the delay of the electroplating work of a factory can be avoided;
3. this application can be constantly discharged the sodium carbonate crystallization in the plating solution to at the in-process of continuous repeated extraction plating solution and discharge sodium carbonate, the concentration of the sodium carbonate of the plating solution in the electroplating pool also can be maintained at reasonable interval, can guarantee the efficiency of electroplating.
Drawings
FIG. 1 is a schematic diagram of the structure provided by the present invention.
Fig. 2 is a schematic structural diagram of a purification apparatus provided in the present invention.
FIG. 3 is a schematic structural diagram of a discharging mechanism provided by the invention.
Fig. 4 is a schematic structural diagram of a filtering device provided by the invention.
Fig. 5 is a schematic structural view of a drying plate provided by the present invention.
The reference numerals include: 10. an electroplating pool; 11. a first pump body; 12. a first feeding pipe; 13. a first feed conduit; 20. a recovery tank; 21. a second pump body; 22. a second feeding pipe; 23. a second feed conduit; 24. a feed back pump body; 25. a return conduit; 30. a purification tank; 31. a can lid; 32. a stirring motor; 33. A stirring shaft; 34. an upper blade agitator; 35. a lower blade agitator; 36. a first connecting flange; 37. an inner tank; 38. an outer tank; 39. a heat exchange chamber; 40. a refrigerator; 41. a cooling coil; 50. a material discharger; 51. a second connecting flange; 52. discharging the material pipe; 53. a discharge rod; 54. a material blocking valve plate; 55. a material blocking cover plate; 56. a spike portion; 60. a lifting frame; 61. a lifting guide groove; 62. a strip-shaped abdicating hole; 63. a link rod; 64. a lifting rack; 65. a gear; 66. a lifting motor; 70. a collection box; 71. a solids agitator; 72. drying the plate; 73. an air blowing port; 74. an air tube; 75. a hot air blower; 76. a fan; 77. a transfer shaft; 78. a transfer wheel; 79. and (4) a conveyor belt.
Detailed Description
The invention discloses a plating solution recycling system and a control method thereof, and the specific implementation mode of the invention is further described in combination with the preferred embodiment.
Referring to fig. 1 to 5 of the drawings, fig. 1 is a schematic structural view of the purification apparatus provided by the present invention, fig. 2 is a schematic structural view of the purification apparatus provided by the present invention, fig. 3 is a schematic structural view of the discharging mechanism provided by the present invention, fig. 4 is a schematic structural view of the filtering apparatus provided by the present invention, and fig. 5 is a schematic structural view of the drying plate provided by the present invention.
The invention provides a plating solution recycling system, which comprises a plating tank 10, a recovery tank 20, a purification device and a filtering device, wherein a large amount of plating solution is filled in the plating tank 10, the plating device is arranged in the plating tank 10, the purification device comprises a purification tank 30, a cooling mechanism and a feeding mechanism, the purification tank 30 comprises a tank body, the lower end of the tank body is provided with a plurality of supporting legs, the upper end of the tank body is provided with a tank cover 31, the tank cover 31 is provided with a stirring mechanism, the stirring mechanism comprises a stirring motor 32, a stirring shaft 33 and a stirrer, the stirring motor 32 is fixedly arranged on the tank cover 31, the upper end of the stirring shaft 33 is connected with the stirring motor 32, the other end of the stirring shaft 33 is arranged in the tank body, the stirrer is arranged on the stirring shaft 33, the cooling mechanism comprises a cooling coil 41 and a refrigerating machine 40, the tank body comprises an inner tank 37 and an outer tank 38, a heat exchange cavity 39 is arranged between the inner tank 37 and the outer tank 38, a cooling coil 41 is installed in the heat exchange cavity 39, a refrigerator 40 is arranged on one side of the tank body, the refrigerator 40 is connected with the cooling coil 41, the feeding mechanism comprises a first pump body 11, a first feeding pipeline 12 and a first feeding pipeline 13, one end of the first feeding pipeline 12 is connected with the electroplating tank 10, the other end of the first feeding pipeline 12 is connected with the first pump body 11, the output end of the first pump body 11 is connected with one end of the first feeding pipeline 13, the other end of the first feeding pipeline 13 is connected with the tank cover 31, a discharging mechanism is arranged at the lower end of the tank body, the recovery tank 20 is arranged below the tank body, and a material returning mechanism is arranged between the recovery tank 20 and the electroplating tank 10, the feed back mechanism comprises a feed back pump body 24, the feed back pump body 24 is connected with the recovery tank 20 and the electroplating tank 10 through a feed back pipeline 25, and the filtering device is arranged between the recovery tank 20 and the discharging mechanism.
Preferably, the lower extreme of the jar body is equipped with the bin outlet, the bin outlet is equipped with first connection flange dish 36, drop feed mechanism includes blowing ware 50, the upper end of blowing ware 50 is equipped with second connection flange dish 51, second connection flange dish 51 with first connection flange dish 36 phase-match, be equipped with blowing pole 53 in the blowing ware 50, the upper end of blowing pole 53 is equipped with material blocking valve block 54, the middle part of second connection flange dish 51 is equipped with the blowing hole, the blowing hole with material blocking valve block 54 phase-match, the lower extreme of blowing ware 50 is equipped with the detachable end cap, the end cap with blowing ware 50 sealing connection, the middle part of end cap is equipped with the guiding hole, the guiding hole with blowing pole 53 phase-match, one side of blowing ware 50 is equipped with the blowing pipe 52 of downward sloping.
Preferably, drop feed mechanism includes actuating mechanism, actuating mechanism includes elevator frame 60, lifting rack 64 and elevator motor 66, be equipped with lifting guide slot 61 on the elevator frame 60, lifting rack 64 with lifting guide slot 61 sliding connection, elevator motor 66 is connected with gear 65, gear 65 with lifting rack 64 phase-match, one side of lifting guide slot 61 is equipped with the bar hole of stepping down 62, the lower extreme fixedly connected with link 63 of blowing pole 53, the other end of link 63 passes bar hole of stepping down 62 with lifting rack 64 links to each other.
Preferably, the upper end of the material blocking valve plate 54 is provided with a material blocking cover plate 55, the radius of the material blocking cover plate 55 is larger than that of the material blocking valve plate 54, the lower end of the material blocking cover plate 55 is provided with a sealing ring, and the upper end of the material blocking cover plate 55 is provided with a conical spine part 56.
Preferably, the refining apparatus includes a secondary refining mechanism, the secondary refining mechanism includes a second pump body 21, a second feeding pipe 22 and a second feeding pipe 23, the second pump body 21 is installed at one side of the recovery tank 20, one end of the second feeding pipe 22 is connected to the second pump body 21, the other end of the second feeding pipe 22 is connected to the recovery tank 20, one end of the second feeding pipe 23 is connected to an output end of the second pump body 21, and the other end of the second feeding pipe 23 is connected to the tank cover 31.
Preferably, filter equipment includes conveyer belt 79, transfer gear 78 and transmission axle 77, transmission axle 77 rotates through the drive of conveying motor, transfer gear 78 sets up on the transmission axle 77, the conveyer belt 79 cladding is in outside the transfer gear 78, be equipped with the hole of permeating water on the conveyer belt 79 uniformly, the conveyer belt 79 set up in the below of bin outlet.
Preferably, the other end of the conveyor belt 79 is provided with a collection box 70 and a drying device, the bottom of the collection box 70 is provided with a solid stirrer 71, the drying device comprises a fan 76, a hot air heater 75 and a drying plate 72, the drying plate 72 is installed on the inner side of the collection box 70, the drying plate 72 is provided with a plurality of air blowing ports 73 uniformly arranged, a drying cavity is arranged in the drying plate 72, the air blowing ports 73 are communicated with the drying cavity, the hot air heater 75 is installed at an air outlet of the fan 76, and the hot air heater 75 is communicated with the drying cavity through a vent pipe 74.
Preferably, the agitator includes upper blade agitator 34 and lower floor's blade agitator 35, upper blade agitator 34 and lower floor's blade agitator 35 are all installed on (mixing) shaft 33, lower floor's blade agitator 35 is installed the end of (mixing) shaft 33, upper agitator is installed lower floor's blade agitator 35's top, upper agitator's radius is greater than lower floor's blade agitator 35's radius.
Preferably, the plating solution recycling system includes a controller including a timing module.
The invention provides a control method of a plating solution recycling system, which comprises the following steps:
step S1: purifying, namely extracting 1-2% of electroplating solution from the plating solution pool, pumping the electroplating solution into a purification tank 30, keeping the temperature in the purification tank 30 below 5 ℃, keeping stirring the electroplating solution in the purification tank 30 at a constant speed, and fully stirring for 24-48 h;
step S2: filtering, discharging the crystallized electroplating solution downwards, filtering by a filtering device, dropping the filtrate into the recovery tank 20, and dropping the crystals into the collection tank 70;
step S3: re-purifying, pumping the filtrate in the recovery tank 20 into the purification tank 30 again, maintaining the temperature in the purification tank 30 below 5 ℃, keeping stirring the electroplating solution in the purification tank 30 at a constant speed, fully stirring for 6-8h, discharging the electroplating solution after re-purifying downwards, filtering by a filtering device, and allowing the filtrate to fall into the recovery tank 20 and crystallize and fall into the collection tank 70;
step S4: recycling, repeating the step S3 until the crystallization is sufficient, pumping the filtrate in the recovery tank 20 back to the plating tank 10, and repeating the operation S1 after 14-30 days.
A first embodiment.
The specific control method of this embodiment is as follows:
first, under the control of the controller, the first pump body 11 will extract 1% of the plating solution from the plating bath 10 and pump it into the purification tank 30. The stirring motor 32 is started, the stirring shaft 33 rotates to drive the upper layer blade stirrer 34 and the lower layer blade stirrer 35 to stir the electroplating solution, the refrigerator 40 is started, the refrigerator 40 enables the temperature of the purification tank 30 to be reduced through the cooling coil 41, and the temperature in the purification tank 30 is kept below 5 ℃. Under the temperature environment below 5 ℃, the stirring is continuously carried out for 24h, and the sodium carbonate in the electroplating solution is continuously crystallized and precipitated to the bottom of the purification tank 30.
Then, the lifting motor 66 is controlled, the lifting motor 66 drives the gear 65 to rotate, the gear 65 and the lifting rack 64 are matched to enable the lifting rack 64 to ascend, the discharging rod 53 ascends along with the ascending, the material blocking cover plate 55 and the material blocking valve plate 54 move upwards, and crystals and electroplating solution in the purifying tank 30 are discharged downwards through the discharging hole and fall on the conveyor belt 79. When the conveyor motor is simultaneously started, the conveyor belt 79 starts to circularly rotate, the electroplating solution is discharged from the water-permeable holes on the conveyor belt 79 to the recovery tank 20, and crystals are left on the conveyor belt 79 and are sent to the collection tank 70 through the rotation of the conveyor belt 79.
Then, the second pump body 21 is controlled to pump the filtrate in the recovery tank 20 into the purification tank 30, the temperature in the purification tank 30 is maintained below 5 ℃, the mixture is fully stirred for 6 hours, the electroplating solution is discharged from the purification tank 30 again after crystallization, the electroplating solution is filtered again, and the filtering can be repeated for multiple times.
And finally, after the crystallization is sufficient, controlling the feed back pump body 24 to pump the electroplating solution in the recovery tank 20 back to the electroplating tank 10. The controller extracts 1% of electroplating solution from the electroplating pool 10 every time for purification through periodic circular purification of the timing module, so that the use of an electroplating device in the electroplating pool 10 cannot be influenced, the concentration of sodium carbonate in the electroplating solution can be continuously reduced, the performance of the electroplating solution is maintained, all the electroplating solutions do not need to be directly replaced, the electroplating processing of a factory cannot be influenced, the cost can be saved, sodium carbonate crystals can be produced, and the profit can be increased for external sales.
A second embodiment.
The specific control method of this embodiment is as follows:
first, under the control of the controller, the first pump body 11 will extract 2% of the plating solution from the plating bath 10 and pump it into the purification tank 30. The stirring motor 32 is started, the stirring shaft 33 rotates to drive the upper layer blade stirrer 34 and the lower layer blade stirrer 35 to stir the electroplating solution, and the refrigerator 40 is started, so that the refrigerator 40 reduces the temperature of the purification tank 30 through the cooling coil 41, and keeps the temperature in the purification tank 30 below 5 ℃. Under the temperature environment below 5 ℃, the stirring is continuously carried out for 48h, and the sodium carbonate in the electroplating solution is continuously crystallized and precipitated to the bottom of the purification tank 30.
Then, the lifting motor 66 is controlled, the lifting motor 66 drives the gear 65 to rotate, the gear 65 and the lifting rack 64 are matched to enable the lifting rack 64 to ascend, the discharging rod 53 ascends along with the ascending, the material blocking cover plate 55 and the material blocking valve plate 54 move upwards, and crystals and electroplating solution in the purifying tank 30 are discharged downwards through the discharging hole and fall on the conveyor belt 79. When the conveyor motor is simultaneously started, the conveyor belt 79 starts to circularly rotate, the electroplating solution is discharged from the water-permeable holes on the conveyor belt 79 to the recovery tank 20, and crystals are left on the conveyor belt 79 and are sent to the collection tank 70 through the rotation of the conveyor belt 79.
Then, the second pump body 21 is controlled to pump the filtrate in the recovery tank 20 into the purification tank 30, the temperature in the purification tank 30 is maintained below 5 ℃, the mixture is fully stirred for 8 hours, the electroplating solution is discharged from the purification tank 30 again after crystallization, the electroplating solution is filtered again, and the filtering can be repeated for multiple times.
And finally, after the crystallization is sufficient, controlling the feed back pump body 24 to pump the electroplating solution in the recovery tank 20 back to the electroplating tank 10. The controller extracts 2% of electroplating solution from the electroplating pool 10 every time for purification through periodic circular purification of the timing module, namely, the use of an electroplating device in the electroplating pool 10 cannot be influenced, the concentration of sodium carbonate in the electroplating solution can be continuously reduced, the performance of the electroplating solution is maintained, all the electroplating solutions do not need to be directly replaced, the electroplating processing of a factory cannot be influenced, the cost can be saved, meanwhile, sodium carbonate crystals can be produced, and the profit can be increased for external sales.
It should be noted that the technical features related to the present patent application, such as the design and selection of the controller and the stirrer, should be regarded as the prior art, and the specific structure, the operation principle, the control mode and the spatial arrangement mode of the technical features may be selected conventionally in the field, and should not be regarded as the invention point of the present patent, and the present patent is not further specifically described in detail.
It will be apparent to those skilled in the art that modifications and equivalents may be made in the embodiments and/or portions thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. A plating solution recycling system is characterized by comprising an electroplating pool, a recovery pool, a purification device and a filtering device, wherein a large amount of plating solution is filled in the electroplating pool, the electroplating pool is internally provided with the electroplating device, the purification device comprises a purification tank, a cooling mechanism and a feeding mechanism, the purification tank comprises a tank body, the lower end of the tank body is provided with a plurality of supporting legs, the upper end of the tank body is provided with a tank cover, the tank cover is provided with a stirring mechanism, the stirring mechanism comprises a stirring motor, a stirring shaft and a stirrer, the stirring motor is fixedly arranged on the tank cover, the upper end of the stirring shaft is connected with the stirring motor, the other end of the stirring shaft is arranged in the tank body, the stirrer is arranged on the stirring shaft, the cooling mechanism comprises a cooling coil and a refrigerating machine, the tank body comprises an inner tank and an outer tank, a heat exchange cavity is arranged between the inner tank and the outer tank, the cooling coil is arranged in the heat exchange cavity, the refrigerator is arranged on one side of the tank body, the refrigerator is connected with the cooling coil, the feeding mechanism comprises a first pump body, a first feeding pipeline and a first feeding pipeline, one end of the first feeding pipeline is connected with the electroplating tank, the other end of the first feeding pipeline is connected with the first pump body, the output end of the first pump body is connected with one end of the first feeding pipeline, the other end of the first feeding pipeline is connected with the tank cover, a discharging mechanism is arranged at the lower end of the tank body, the recovery tank is arranged below the tank body, a material returning mechanism is arranged between the recovery tank and the electroplating tank and comprises a material returning pump body, and the material returning pump body is connected with the recovery tank and the electroplating tank through the material returning pipeline, the filtering device is arranged between the recovery tank and the discharging mechanism.
2. The electroplating solution recycling system according to claim 1, wherein the tank body has a discharge port at a lower end thereof, the discharge port has a first connecting flange, the discharging mechanism comprises a discharging device, the discharging device has a second connecting flange at an upper end thereof, the second connecting flange is matched with the first connecting flange, the discharging device has a discharging rod therein, the discharging rod has a material blocking valve plate at an upper end thereof, the second connecting flange has a discharging hole at a middle portion thereof, the discharging hole is matched with the material blocking valve plate, the discharging device has a detachable plug at a lower end thereof, the plug is hermetically connected with the discharging device, the plug has a guide hole at a middle portion thereof, the guide hole is matched with the discharging rod, and a discharging pipe inclined downward is disposed at one side of the discharging device.
3. The electroplating solution recycling system according to claim 2, wherein the discharging mechanism comprises a driving mechanism, the driving mechanism comprises a lifting frame, a lifting rack and a lifting motor, a lifting guide groove is formed in the lifting frame, the lifting rack is slidably connected with the lifting guide groove, the lifting motor is connected with a gear, the gear is matched with the lifting rack, a bar-shaped abdicating hole is formed in one side of the lifting guide groove, a link rod is fixedly connected to the lower end of the discharging rod, and the other end of the link rod penetrates through the bar-shaped abdicating hole to be connected with the lifting rack.
4. The electroplating solution recycling system as claimed in claim 2, wherein a material blocking cover plate is arranged at the upper end of the material blocking valve plate, the radius of the material blocking cover plate is larger than that of the material blocking valve plate, a sealing ring is arranged at the lower end of the material blocking cover plate, and a conical spine part is arranged at the upper end of the material blocking cover plate.
5. The plating solution recycling system according to claim 1, wherein the refining device includes a secondary refining mechanism, the secondary refining mechanism includes a second pump body, a second feeding pipe, and a second feeding pipe, the second pump body is installed on one side of the recovery tank, one end of the second feeding pipe is connected to the second pump body, the other end of the second feeding pipe is connected to the recovery tank, one end of the second feeding pipe is connected to an output end of the second pump body, and the other end of the second feeding pipe is connected to the tank cover.
6. The plating solution recycling system as claimed in claim 1, wherein the filtering device comprises a transmission belt, a transmission wheel and a transmission shaft, the transmission shaft is driven to rotate by a transmission motor, the transmission wheel is arranged on the transmission shaft, the transmission belt is covered outside the transmission wheel, the transmission belt is uniformly provided with water permeable holes, and the transmission belt is arranged below the discharge opening.
7. The electroplating solution recycling system according to claim 6, wherein a collection box and a drying device are disposed at the other end of the conveyor belt, a solid stirrer is disposed at the bottom of the collection box, the drying device comprises a fan, a hot air blower and a drying plate, the drying plate is mounted on the inner side of the collection box, a plurality of uniformly arranged air blowing ports are disposed on the drying plate, a drying cavity is disposed in the drying plate, the air blowing ports are communicated with the drying cavity, the hot air blower is mounted at an air outlet of the fan, and the hot air blower is communicated with the drying cavity through a vent pipe.
8. The plating solution recycling system as recited in claim 1, wherein said agitator comprises an upper blade agitator and a lower blade agitator, both mounted on said stirring shaft, said lower blade agitator being mounted at the end of said stirring shaft, said upper blade agitator being mounted above said lower blade agitator, the radius of said upper blade agitator being greater than the radius of said lower blade agitator.
9. The plating solution recycling system of claim 1, comprising a controller including a timing module.
10. A method of controlling a plating liquid recycling system as recited in claims 1 to 9, comprising the steps of:
step S1: purifying, namely extracting 1-2% of electroplating solution from the plating solution pool, pumping the electroplating solution into a purification tank, keeping the temperature in the purification tank below 5 ℃, keeping stirring the electroplating solution in the purification tank at a constant speed, and fully stirring for 24-48 h;
step S2: filtering, namely discharging the crystallized electroplating solution downwards, filtering by a filtering device, and dropping the filtrate into a recovery tank and the crystals into a collection tank;
step S3: re-purifying, namely pumping the filtrate in the recovery tank into a purification tank again, maintaining the temperature in the purification tank below 5 ℃, keeping stirring the electroplating solution in the purification tank at a constant speed, fully stirring for 6-8h, discharging the electroplating solution after re-purification downwards, filtering by a filtering device, dropping the filtrate into the recovery tank, and crystallizing and dropping into a collection box;
step S4: recycling, repeating the step S3 until the crystallization is sufficient, pumping the filtrate in the recovery tank back to the electroplating tank, and repeating the operation step S1 after 14-30 days.
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| CN202210312066.9A CN114892255A (en) | 2022-03-28 | 2022-03-28 | Electroplating solution recycling system and control method thereof |
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| CN202210312066.9A CN114892255A (en) | 2022-03-28 | 2022-03-28 | Electroplating solution recycling system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117822083A (en) * | 2024-03-06 | 2024-04-05 | 苏州尊恒半导体科技有限公司 | Wafer plating solution circulation temperature control system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090058201A (en) * | 2007-12-04 | 2009-06-09 | 고등기술연구원연구조합 | Apparatus for purifying a plating solution |
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- 2022-03-28 CN CN202210312066.9A patent/CN114892255A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090058201A (en) * | 2007-12-04 | 2009-06-09 | 고등기술연구원연구조합 | Apparatus for purifying a plating solution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117822083A (en) * | 2024-03-06 | 2024-04-05 | 苏州尊恒半导体科技有限公司 | Wafer plating solution circulation temperature control system |
| CN117822083B (en) * | 2024-03-06 | 2024-05-07 | 苏州尊恒半导体科技有限公司 | Wafer plating solution circulation temperature control system |
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