CN202170371U - Device combining coarsening production and trivalent chromium electrolysis technology - Google Patents

Abstract

A device combining roughening production and trivalent chromium electrolysis process, involving weak electric electrolysis and chemical corrosion, which increases the volume of the original roughening tank and adds the frame, cathode and anode required for trivalent chromium electrolysis, in which the power supply is connected Outside the closed cover of the production line, it specifically includes the roughening tank, the trivalent chromium electrolysis device and the auxiliary device outside the electrolysis line, as well as the ceramic bucket soaking tank, electrolyte preparation tank and pole bar for the trivalent chromium electrolysis process. The chromium electrolysis device is installed at one end of the roughening tank, and the ceramic bucket soaking tank, electrolyte preparation tank and auxiliary devices outside the electrolysis line are arranged outside the roughening tank and the trivalent chromium electrolysis device; a kind of coarsening production and trivalent chromium The method for merging electrolytic processes includes a roughening plating process, a trivalent chromium electrolytic process, a trivalent chromium electrolytic ceramic barrel soaking process and an electrolyte preparation process. The utility model has the advantages of simple and convenient operation, saves operation time, reduces the maintenance time of maintenance personnel, and saves labor costs.

Description

Coarse production combined with trivalent chromium electrolysis process

technical field

The utility model relates to weak electric electrolysis and chemical corrosion, in particular to a device for installing trivalent chromium electrolysis in a roughening tank, so that roughening production and trivalent chromium electrolysis are carried out in the same tank. A device for combining electrolytic processes.

Background technique

At present, the trivalent chromium in the roughening solution of the electroplating industry is often used to reduce the content of the trivalent chromium in the way of weak electric electrolysis outside the line. The usual way is to set up an independent trivalent chromium electrolysis system not far from the outside of the electroplating production line. After the electrolytic treatment of the barrel, it overflows from the roughening overflow tank through the titanium pipeline and returns to the roughening tank, so as to achieve the regeneration of the roughening liquid for recycling in the production line. However, there will be many problems in this process: 1. The roughening tank and the trivalent chromium treatment system are connected through titanium pipelines and transported by pumps. The roughening solution is easy to corrode titanium pipelines, delivery pumps and gaskets, resulting in leakage of chromium mist , the chromium mist diffuses into the air, which affects the product quality; 2. A large amount of chromium mist is generated during the electrolysis process, which also affects the product quality; The processing is in a state of shutdown, and the content of trivalent chromium cannot be controlled until it affects production, thereby affecting production efficiency. The above-mentioned problems that exist need to be further improved.

Utility model content

The purpose of this utility model is to provide a stable, safe and reliable roughening production and trivalent chromium electrolysis process combined device, that is to say, adopt the method of coarsening production and trivalent chromium electrolysis device overall design to solve the problem of existing trivalent chromium During the processing process, the leakage of pipelines, delivery pumps, etc. will cause parts to be unqualified and trivalent chromium cannot be controlled within the process range, thus affecting the normal production and other problems.

The technical scheme of the utility model is: increase the volume of the original roughening tank, and increase a certain volume on the basis of the normal production of workpieces in the electroplating line, so that the original two equipments can be merged into a whole, and the other equipment is protruded at one end of the production line. Outside the slot, but closed in the closed cover of the entire production line, in the protruding part, the frame, cathode and anode required for trivalent chromium electrolysis are added, and the power supply is connected outside the closed cover of the production line. The content of trivalent chromium in the chemical solution continues to rise, and the electrolysis of trivalent chromium is carried out in the production tank without pipelines or pumps, the roughening solution will not leak, and the chromium mist generated by electrolysis will also be discharged along with the roughening The wind and the exhaust air in the closed cover are sucked away, and will not spread to the production line.

中不断的被粗化液氧化，粗化液中的六价铬被还原成为三价铬，使三价铬的浓度不断升高，在粗化液中空气搅拌地作用下，三价铬扩散到整个槽中。此时，三价铬电解装置在外电路的作用下使三价铬不断的氧化为六价铬，从而维持了粗化液中铬离子氧化还原的平衡过程，在三价铬电解过程中需要消耗电解液，当三价铬电解进行一定时间后，陶瓷桶壁会被封住，需要浸泡后再使用。 In electroplating production, as the plastic parts are roughened in the electroplating process

It is continuously oxidized by the roughening solution, and the hexavalent chromium in the roughening solution is reduced to trivalent chromium, so that the concentration of trivalent chromium continues to increase. Under the action of air stirring in the roughening solution, the trivalent chromium diffuses to throughout the tank. At this time, the trivalent chromium electrolysis device continuously oxidizes trivalent chromium to hexavalent chromium under the action of the external circuit, thereby maintaining the balance process of redox of chromium ions in the roughening solution. In the process of electrolysis of trivalent chromium, it is necessary to consume electrolytic Liquid, when the trivalent chromium electrolysis is carried out for a certain period of time, the wall of the ceramic barrel will be sealed, and it needs to be soaked before use.

A device combined with coarsening production and trivalent chromium electrolysis process, including: roughening tank, trivalent chromium electrolysis device and auxiliary device outside the electrolysis line, as well as a ceramic bucket soaking tank and electrolyte preparation for the trivalent chromium electrolysis process Groove and pole bar, the frame, cathode and anode required for trivalent chromium electrolysis are added to the roughening tank, and the trivalent chromium electrolysis device is installed at one end of the roughening tank, ceramic barrel soaking tank, electrolyte preparation tank and auxiliary outside the electrolysis line The device is arranged outside the roughening tank and the trivalent chromium electrolysis device.

The roughening tank is equipped with four auxiliary equipments: "V" pole seat, exhaust barrel, air stirring pipe, and steam heating pipe. Among them, the "V" pole seat plays the role of supporting the pole bar, which is the conveying equipment for the workpiece . During production, the workpiece is hung on the pole, and the partition separates the workpiece from the trivalent chromium electrolysis device; while the workpiece is in normal production, since the hexavalent chromium in the bath is continuously reduced to trivalent chromium, the trivalent chromium Chromium content is constantly increasing. At the same time, on the other side of the separator, the trivalent chromium electrolysis reaction is in progress.

The trivalent chromium electrolysis device includes an electrolysis device frame, an electrolysis ceramic barrel, an electrolysis cathode bar, an electrolysis anode bar, an electrolysis cathode plate, an electrolysis anode plate, a separator, and an upper cover plate of an electrolytic cell.

The auxiliary devices outside the electrolysis line include: the rectifier outside the electrolysis line, the electrolysis cathode wire, the electrolysis anode wire, and the electrolysis ammeter. The frame of the electrolysis device is fixed at one end of the roughening tank, and the electrolytic ceramic barrel, electrolytic cathode bar, and electrolytic anode bar are installed on the electrolytic device frame, wherein the electrolytic anode bars are installed on both sides, and the electrolytic ceramic barrel is installed in the middle of the two anode bars. The electrolytic cathode bar is installed directly above the electrolytic ceramic bucket, and the electrolytic cathode bar and the electrolytic anode bar are hung with electrolytic cathode plates and electrolytic anode plates respectively, forming the cathode and anode of the electrolysis reaction. the

There is a partition between the electrolysis part and the roughening part, so that the electrolysis part and the roughening part are both independent and connected, thus forming a whole. Under the action of the rectifier outside the electrolysis line, the electrolysis device continuously oxidizes trivalent chromium to hexavalent chromium, thereby maintaining the balance process of oxidation-reduction of chromium ions in the roughening solution. In order to prevent the chromium mist generated in the electrolysis process from volatilizing, the upper part of the electrolysis part is equipped with an upper cover plate of the electrolysis tank.

The electrolysis line external rectifier of the electrolysis line auxiliary device is respectively connected with the electrolysis cathode bar and the electrolysis anode bar through the electrolysis cathode wire and the electrolysis anode wire, and the size of the current is adjusted by the electrolysis ammeter during the electrolysis process.

A method for combining coarsening production with a trivalent chromium electrolysis process comprises: an electroplating roughening process, a trivalent chromium electrolysis process, a trivalent chromium electrolytic ceramic bucket soaking process, and an electrolyte preparation process:

A, Coarse production, constantly produce Cr ³⁺ in the production process;

A1. Coarse according to the process steps;

B. Trivalent chromium is electrolyzed to oxidize Cr ³⁺ to generate Cr ⁶⁺ , and the solution is renewed;

B1. Install the electrolytic ceramic barrel, and put the electrolytic ceramic barrel on the frame of the electrolytic device;

B2, prepare 10% sulfuric acid solution in the electrolyte preparation tank as the electrolyte;

B3. Inject the electrolyte into the electrolytic ceramic barrel: hang the electrolytic cathode plate and the electrolytic anode plate on the electrolytic cathode bar and the electrolytic anode bar respectively;

B4. Turn on the power supply: turn on the power switch of the rectifier outside the electrolytic line, and then adjust the electrolytic ammeter;

B5 Inspection and sealing: Check the electrical conductivity of each cathode and anode, and confirm that uniform reaction bubbles are generated around each plate, indicating that the electrical conductivity is good, and cover the upper cover of the electrolytic cell to prevent the chromium mist from diverging;

B6. Trivalent chromium electrolysis; during electrolysis, the electrolytic ceramic bucket needs to be continuously replenished with electrolyte, so that it can be continuously electrolyzed for 12-24 hours;

B7. Power-off maintenance; when the surface of the electrolytic ceramic barrel, electrolytic cathode plate, and electrolytic anode plate are adhered by the electrolytic suction, it is necessary to turn off the power supply of the rectifier and take it out for maintenance;

B8. Cleaning and maintenance; cleaning the electrolytic cathode plate and electrolytic anode plate, and soaking in the ceramic barrel soaking tank to clean the electrolytic ceramic barrel;

C. Trivalent chromium electrolytic ceramic barrel soaking process;

D. Electrolyte preparation process.

Description of drawings

Accompanying drawing 1 is the schematic diagram of the front view of the roughening electrolyzer of the present utility model.

Accompanying drawing 2 is the plan view schematic diagram of the roughening electrolyzer of the present utility model.

Accompanying drawing 3 is the structural diagram of the system device of the present utility model. the

Accompanying drawing 4 is process flow diagram of the present utility model.

Meanings of serial numbers in the attached drawings: 1. Roughening tank, 11. "V" pole seat, 12. PVC tank outer wall, 13. Tank inner wall titanium lining, 14. Exhaust barrel, 15. Air stirring tube, 16. Steam generator Temperature tube, 2. Trivalent chromium electrolysis device, 21. Electrolysis device frame, 22. Electrolysis ceramic barrel, 23. Electrolysis cathode bar, 24. Electrolysis anode bar, 25. Electrolysis cathode plate, 26. Electrolysis anode plate, 27 .Separator, 28. Upper cover plate of electrolytic tank, 3. Soaking tank of ceramic bucket, 4. Electrolyte preparation tank, 5. Auxiliary device outside the electrolysis line, 51. Rectifier outside the electrolysis line, 52. Electrolysis cathode wire, 53. Electrolysis Anode wire, 54. electrolytic ammeter, 6. workpiece, 7. pole bar.

Detailed ways

As shown in accompanying drawing 1 to accompanying drawing 3, are respectively: the schematic diagram of the front view of the roughening electrolytic cell of the present invention, the schematic diagram of the top view of the coarsening electrolytic cell of the present invention (the above is electroplating roughening cell and trivalent chromium electrolytic oxidation Two tanks combined into one tank—the schematic diagram of the front view and the top view of the roughening electrolytic tank) and the structure diagram of the system device of the present utility model. It can be seen from the figure that the roughening and trivalent chromium treatment system device includes: a roughening tank 1. Trivalent chromium electrolysis device 2. Ceramic barrel immersion tank 3. Electrolyte preparation tank 4. Auxiliary device outside the electrolysis line 5 and pole bar 7. The specific structure is: the entire coarsening and trivalent chromium treatment system is divided into three parts : The trivalent chromium electrolysis device 2 is installed at one end of the roughening tank 1, and the roughening tank 1 is equipped with "V" pole bar seat 11, exhaust barrel 14, air stirring tube 15, steam heating tube 16 four auxiliary equipment, Wherein "V" pole bar seat 11 plays the effect of supporting pole bar 7, and pole bar 7 is the conveying equipment of workpiece 6. When producing, the workpiece 6 is hung on the pole bar 7, and the partition plate 27 separates the workpiece from the trivalent chromium electrolysis device 2; The content of chromium and trivalent chromium is constantly increasing. At the same time, on the other side of the separator 27, the trivalent chromium electrolysis reaction is in progress.

Wherein the trivalent chromium electrolysis device 2 comprises an electrolysis device frame 21, an electrolytic ceramic barrel 22, an electrolytic cathode bar 23, an electrolytic anode bar 24, an electrolytic cathode plate 25, an electrolytic anode plate 26, a separator 27, and an upper cover plate 28 of the electrolytic tank . Wherein the electrolytic device frame 21 is fixed on one end of the roughening tank 1, the electrolytic ceramic barrel 22, the electrolytic cathode bar 23, and the electrolytic anode bar 24 are installed on the electrolytic device frame 21, wherein the electrolytic anode bar is installed on both sides, and the electrolytic ceramic barrel 22 is installed on the electrolytic device frame 21. In the middle of the two anode bars, the electrolytic cathode bar 23 is installed directly above the electrolytic ceramic barrel 22, and the electrolytic cathode bar 23 and the electrolytic anode bar 24 are respectively hung with an electrolytic cathode plate 25 and an electrolytic anode plate 26, forming an electrolysis reaction of cathode and anode. the

A partition 27 is arranged between the electrolysis part and the roughening part, so that the electrolysis part and the roughening part are both independent and connected, thus forming a whole. The electrolysis device 2 continuously oxidizes trivalent chromium to hexavalent chromium under the action of the external rectifier 51 of the electrolysis line, thereby maintaining the redox balance process of chromium ions in the roughening solution. In order to prevent the chromium mist produced in the electrolysis process from volatilizing, the upper part of the electrolysis part is provided with an upper cover plate 28 of the electrolysis tank.

The ceramic barrel immersion tank 3 and the electrolyte preparation tank 4 of the trivalent chromium electrolysis process supporting device are arranged outside the roughening tank 1 and the trivalent chromium electrolysis device 2 .

The auxiliary device 5 outside the electrolysis line includes: an outside rectifier 51 , an electrolysis cathode lead 52 , an electrolysis anode lead 53 , and an electrolysis ammeter 54 . The external rectifier 51 of the electrolysis line is connected to the electrolysis cathode bar 23 and the electrolysis anode bar 24 respectively through the electrolysis cathode wire 52 and the electrolysis anode wire 53, and the size of the current is adjusted by the electrolysis ammeter 54 during the electrolysis process.

As shown in accompanying drawing 4, it is a kind of roughening production and the method that trivalent chromium electrolysis process merges, and its step comprises: electroplating roughening process A, trivalent chromium electrolysis process B, trivalent chromium electrolytic ceramic barrel immersion process C and Electrolyte preparation process D:

The specific process steps are:

A, Coarse production, constantly produce Cr ³⁺ in the production process;

A1. Coarse according to the usual process steps;

B. Trivalent chromium is electrolyzed to oxidize Cr ³⁺ to generate Cr ⁶⁺ , and the solution is renewed;

B1, install the electrolytic ceramic barrel 22, put the electrolytic ceramic barrel 22 on the electrolytic device frame 21;

B2, prepare 10% sulfuric acid solution in electrolyte preparation tank 4 as electrolyte;

B3. Inject electrolyte into the electrolytic ceramic barrel 22: hang the electrolytic cathode plate 25 and the electrolytic anode plate 26 on the electrolytic cathode bar 23 and the electrolytic anode bar 24 respectively;

B4, turn on the power supply: turn on the external rectifier 51 power switch of the electrolysis line, then adjust the electrolysis ammeter 54, adjust the voltage to be 5V, if it is a new porcelain gall, then first adjust the voltage to 10V, and then adjust the voltage to 5V after 30 minutes;

B5. Inspection and sealing: check the conduction of each cathode and anode, confirm that uniform reaction bubbles are generated around each plate, indicating good conduction, and cover the upper cover plate 28 of the electrolytic cell to prevent the divergence of chromium mist;

B6. Trivalent chromium electrolysis: during electrolysis, the electrolytic ceramic barrel 22 needs to be continuously replenished with electrolyte, so that it can be electrolyzed continuously for 12-24 hours;

B7. Power-off maintenance: when the surfaces of the electrolytic ceramic barrel 22, the electrolytic cathode plate 25, and the electrolytic anode plate 26 are adhered by the electrolytic extract, it is necessary to turn off the power supply of the rectifier 51 outside the electrolytic line and take it out for maintenance;

B8. Cleaning and maintenance: clean the electrolytic cathode plate 25 and the electrolytic anode plate 26, and soak in the ceramic barrel soaking tank 3 to clean the electrolytic ceramic barrel 22;

C. Trivalent chromium electrolytic ceramic barrel soaking process;

D. Electrolyte preparation process.

The utility model has the advantages that: the method is easy to operate, easy to master, and saves operating time; it can effectively solve the problem of delaying the degradation time of trivalent chromium due to waiting for maintenance after the equipment is corroded, resulting in high trivalent chromium being broken, stopping production and coarsening liquid The problem of lower qualification rate caused by leakage; at the same time, it also reduces the maintenance time of maintenance personnel and saves labor costs.

Detailed ways:

Example 1

The concrete implementation steps of the utility model are as follows:

1. Install the electrolytic ceramic barrel 22: put the electrolytic ceramic barrel 22 on the electrolytic device frame 21;

2. Prepare 10% sulfuric acid solution in the electrolyte preparation tank 4 as the electrolyte;

3. Inject electrolyte into the electrolytic ceramic barrel 22: hang the electrolytic cathode plate 25 and the electrolytic anode plate 26 on the electrolytic cathode bar 23 and the electrolytic anode bar 24 respectively;

4. Turn on the power supply: turn on the power switch of the rectifier 51 outside the electrolytic line, then adjust the electrolytic ammeter 54 to a voltage of 5V, if it is a new porcelain gallbladder, first adjust the voltage to 10V, and then adjust the voltage to 5V after 30 minutes;

5. Inspection and sealing: check the electrical conductivity of each cathode and anode, and confirm that uniform reaction bubbles are generated around each pole plate, indicating that the electrical conductivity is good, and cover the upper cover plate 28 of the electrolytic cell to prevent the chromium mist from diverging;

6. Trivalent chromium electrolysis: during electrolysis, the electrolytic ceramic barrel 22 needs to be continuously replenished with electrolyte, so that it can be continuously electrolyzed for 12-24 hours;

7. Power-off maintenance: when the surface of the electrolytic ceramic barrel 22, the electrolytic cathode plate 25, and the electrolytic anode plate 26 are adhered by the electrolytic extract, it is necessary to turn off the rectifier 51 outside the electrolytic line and take it out for maintenance;

8. Cleaning and maintenance: Clean the electrolytic cathode plate 25 and the electrolytic anode plate 26, and soak and clean the electrolytic ceramic barrel 22 in the ceramic barrel soaking tank.

The production cycle is 7 minutes and 30 seconds, the production output is 30,000 pieces/day, the trivalent chromium electrolysis is carried out continuously for one month, the trivalent chromium is controlled between 15-25 pieces/L, and the results are all qualified. There is no pipeline and delivery pump. The device requires no maintenance.

Example 2

The concrete implementation steps of the utility model are as follows:

1. Install the electrolytic ceramic barrel 22: put the electrolytic ceramic barrel 22 on the electrolytic device frame 21;

2. Prepare 10% sulfuric acid solution in the electrolyte preparation tank 4 as the electrolyte;

3. Inject electrolyte into the electrolytic ceramic barrel 22: hang the electrolytic cathode plate 25 and the electrolytic anode plate 26 on the electrolytic cathode bar 23 and the electrolytic anode bar 24 respectively;

4. Turn on the power supply: turn on the power switch of the rectifier 51 outside the electrolytic line, then adjust the electrolytic ammeter 54 to a voltage of 5V, if it is a new porcelain gallbladder, first adjust the voltage to 10V, and then adjust the voltage to 5V after 30 minutes;

5. Inspection and sealing: check the electrical conductivity of each cathode and anode, and confirm that uniform reaction bubbles are generated around each pole plate, indicating that the electrical conductivity is good, and cover the upper cover plate 28 of the electrolytic cell to prevent the chromium mist from diverging;

6. Trivalent chromium electrolysis: during electrolysis, the electrolytic ceramic barrel 22 needs to be continuously replenished with electrolyte, so that it can be continuously electrolyzed for 12-24 hours;

7. Power-off maintenance: when the surface of the electrolytic ceramic barrel 22, the electrolytic cathode plate 25, and the electrolytic anode plate 26 are adhered by the electrolytic extract, it is necessary to turn off the rectifier 51 outside the electrolytic line and take it out for maintenance;

8. Cleaning and maintenance: Clean the electrolytic cathode plate 25 and the electrolytic anode plate 26, and soak and clean the electrolytic ceramic barrel 22 in the ceramic barrel soaking tank.

The production cycle is 5 minutes and 30 seconds, and the production output is 35,000 pieces/day. The trivalent chromium electrolysis is carried out continuously for one month, and the trivalent chromium is controlled between 15-25 pieces/L. The results are all qualified. There is no pipeline and delivery pump. The device requires no maintenance.

Example 3

The concrete implementation steps of the utility model are as follows:

1. Install the electrolytic ceramic barrel 22: put the electrolytic ceramic barrel 22 on the electrolytic device frame 21;

2. Prepare 10% sulfuric acid solution in the electrolyte preparation tank 4 as the electrolyte;

3. Inject electrolyte into the electrolytic ceramic barrel 22: hang the electrolytic cathode plate 25 and the electrolytic anode plate 26 on the electrolytic cathode bar 23 and the electrolytic anode bar 24 respectively;

4. Turn on the power supply: turn on the power switch of the rectifier 51 outside the electrolytic line, then adjust the electrolytic ammeter 54 to a voltage of 5V, if it is a new porcelain gallbladder, first adjust the voltage to 10V, and then adjust the voltage to 5V after 30 minutes;

5. Inspection and sealing: check the electrical conductivity of each cathode and anode, and confirm that uniform reaction bubbles are generated around each pole plate, indicating that the electrical conductivity is good, and cover the upper cover plate 28 of the electrolytic cell to prevent the chromium mist from diverging;

6. Trivalent chromium electrolysis: during electrolysis, the electrolytic ceramic barrel 22 needs to be continuously replenished with electrolyte, so that it can be continuously electrolyzed for 12-24 hours;

7. Power-off maintenance: when the surface of the electrolytic ceramic barrel 22, the electrolytic cathode plate 25, and the electrolytic anode plate 26 are adhered by the electrolytic extract, it is necessary to turn off the rectifier 51 outside the electrolytic line and take it out for maintenance;

8. Cleaning and maintenance: Clean the electrolytic cathode plate 25 and the electrolytic anode plate 26, and soak and clean the electrolytic ceramic barrel 22 in the ceramic barrel soaking tank.

The production cycle is 4 minutes and 30 seconds, the production output is 40,000 pieces/day, the trivalent chromium electrolysis is carried out continuously for six months, and the trivalent chromium is controlled between 15-30 pieces/L, and the results are all qualified. There is no pipeline and delivery pump , the equipment does not require maintenance.

Claims (4)

1. the device that merges of alligatoring production and trivalent chromium electrolysis process; It is characterized in that comprising: the outer supplementary unit (5) of alligatoring groove (1), trivalent chromium electrolyzer (2) and electrolysis line; And be supporting pottery bucket soaking compartment (3), electrolyte quota groove (4) and utmost point thick stick (7) of trivalent chromium electrolysis process; The alligatoring groove increases required framework, the anode and cathode of trivalent chromium electrolysis; Its trivalent chromium electrolyzer (2) is installed in the end in the alligatoring groove, and pottery bucket soaking compartment (3), electrolyte quota groove (4) and the outer supplementary unit (5) of electrolysis line are arranged on the outside of alligatoring groove (1) and trivalent chromium electrolyzer (2).

2. the device that merges according to described alligatoring production of claim 1 and trivalent chromium electrolysis process, it is characterized in that: alligatoring groove (1) is equipped with utmost point thick stick (7) passive " V " utmost point thick stick seat (11) and air draft bucket (14), air stirring pipe (15) and steam heating tube (16).

3. the device that merges according to described alligatoring production of claim 1 and trivalent chromium electrolysis process; It is characterized in that: trivalent chromium electrolyzer (2) includes electrolyzer framework (21), electrolytic ceramic bucket (22), electrolysis cathode thick stick (23), electrolytic anode thick stick (24), electrolysis cathode pole plate (25), electrolytic anode pole plate (26), electrolysis section and alligatoring part intermediary dividing plate (27), electrolyzer upper cover plate (28); Wherein electrolyzer framework (21) is fixed on an end of alligatoring groove (1); Electrolytic ceramic bucket (22), electrolysis cathode thick stick (23), electrolytic anode thick stick (24) are installed on the electrolyzer framework (21); Wherein electrolytic anode thick stick (24) is installed in corresponding both sides; Electrolytic ceramic bucket (22) is installed in the centre of two electrolytic anode thick sticks (24); Electrolysis cathode thick stick (23) be installed in electrolytic ceramic bucket (22) directly over; Hang up electrolysis cathode pole plate (25) and electrolytic anode pole plate (26) on electrolysis cathode thick stick (23) and the electrolytic anode thick stick (24) respectively, constituted the anode and cathode of electrolytic reaction.

4. the device that merges according to described alligatoring production of claim 1 and trivalent chromium electrolysis process; It is characterized in that: the outer supplementary unit (5) of electrolysis line includes the outer RF (51) of electrolysis line, electrolysis cathode lead (52), electrolytic anode lead (53), Faradaic current table (54); The outer RF (51) of its electrolysis line is connected with electrolysis cathode thick stick (23), electrolytic anode thick stick (24) respectively with electrolytic anode lead (53) through electrolysis cathode lead (52), passes through the size that Faradaic current table (54) is regulated electric current in the electrolytic process.

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