阅读说明：本技术 一种电镀铬酸回收净化装置及方法 (Electroplating chromic acid recovery and purification device and method ) 是由 马建廷 于 2021-08-04 设计创作，主要内容包括：本发明涉及电镀铬雾酸处理技术领域,尤其涉及一种电镀铬酸回收净化装置及方法。包括所述铬酸回收器右侧出口和浸水箱左侧进口之间通过风机连接；所述浸水箱右侧出口和一级喷淋净化塔进口连接,所述铬酸回收器内部左侧设置有水箱换热器,通过低温水箱换热器对铬酸雾进行冷凝降温,然后再通过滤网格处理,铬酸雾冷凝成水珠,最后再经过浸水箱和一级喷淋净化塔溶水处理,铬酸雾冷凝以及溶水后的溶液可回收利用,铬酸雾先进行多步回收,以很低的浓度再进行碱性中和处理,处理时所需碱性药液量较少,排放后的浓度远远低于国家排放标准,并且中和后产生的废水量大大降低,不仅节能环保,而且电镀成本大大降低。(The invention relates to the technical field of electroplating chromium mist acid treatment, in particular to an electroplating chromic acid recovery and purification device and method. The right outlet of the chromic acid recoverer is connected with the left inlet of the soaking water tank through a fan; the utility model discloses a chromic acid recovery device, including a water tank heat exchanger, a low temperature water tank heat exchanger, a water tank, a water immersion tank, a first-level spray purification tower, a water immersion tank, a low temperature water tank heat exchanger, then filtration grid processing, the chromic acid fog condensation becomes the drop of water, at last, it dissolves water processing to pass through water immersion tank and first-level spray purification tower again, the solution recycle after chromic acid fog condensation and dissolving water, the chromic acid fog carries out multistep recovery earlier, carry out basicity neutralization treatment again with very low concentration, required basicity liquid medicine volume is less during processing, concentration after the emission is far less than national emission standard, and the waste water volume greatly reduced who produces after neutralization, not only energy-concerving and environment-protective, and electroplating cost greatly reduced.)

1. The utility model provides an electroplating chromic acid retrieves purifier which characterized in that: comprises a chromic acid recovery device 1, a secondary spray purification tower 2, a tertiary spray purification tower 3, a medicine dissolving box 4, a tap water pipe 5, a recovery pipe 6 and a waste water pipe 7; the second-stage spraying purification tower 2 and the third-stage spraying purification tower 3 are sequentially arranged on the right side of the chromic acid recovery device 1; a medicine pump 401 is arranged on one side of the medicine dissolving box 4, and medicine is supplied to the second-stage spraying and purifying tower 2 and the third-stage spraying and purifying tower 3 through the medicine pump 401; the second-stage spraying purification tower 2 and the third-stage spraying purification tower 3 are alkaline and are used for neutralizing chromic acid; the chromic acid recovery device 1 comprises a chromic acid recoverer 101, a fan 102, a water immersion tank 103 and a primary spray purification tower 104; the right outlet of the chromic acid recoverer 101 is connected with the left inlet of the soaking water tank 103 through a fan 102; the outlet on the right side of the soaking water tank 103 is connected with the inlet of a first-level spray purification tower 104.

2. The recovery and purification device of electroplating chromic acid according to claim 1, characterized in that: and a water tank heat exchanger 105 is arranged on the left side inside the chromic acid recoverer 101.

3. The recovery and purification device of electroplating chromic acid according to claim 2, characterized in that: the water tank heat exchanger 105, the water immersion tank 103, the primary spray purification tower 104 and the medicine dissolving tank 4 are respectively connected with a tap water pipe 5, and tap water supplies water for the water immersion tank 103, the primary spray purification tower 104 and the medicine dissolving tank 4 after passing through the water tank heat exchanger 105.

4. The recovery and purification device of electroplating chromic acid according to claim 1, characterized in that: the water immersion tank 103 is of a closed structure; an air inlet pipe 106 is arranged at the inlet position on the left side of the soaking water tank 103; the left end of the air inlet pipe 106 is connected with the outlet end of the fan 102; the other end of the air inlet pipe 106 is provided with an air distribution disc 107; a plurality of gas distribution pipes 108 are distributed below the gas distribution plate 107; the outlet of the gas distribution pipe 108 is arranged below the water surface; the outlet position on the right side of the soaking water tank 103 is arranged above the water surface.

5. The recovery and purification device of electroplating chromic acid according to claim 1, characterized in that: the liquid sprayed by the first-stage spray purification tower 104 is pure tap water; a gas-liquid separator 109 is arranged between the first-stage spray purification tower 104 and the second-stage spray purification tower 2, and is connected through the gas-liquid separator 109.

6. An electroplating chromic acid recovery and purification device according to claim 5, characterized in that: the chromic acid recoverer 101, the soaking tank 103, the primary spray purification tower 104 and the gas-liquid separator 109 are respectively connected with the recovery pipe 6.

7. The treatment method of the electroplating chromic acid recovery and purification device according to any one of claims 1 to 6, which comprises the following steps:

a. the chromic acid mist enters the chromic acid recoverer 101 from the left side;

b. the temperature of the water tank heat exchanger 105 is low, the chromic acid mist is cooled, and the chromic acid mist is condensed into water drops and falls downwards for primary separation;

c. the chromic acid mist reaches the position of a filter screen in the chromic acid recoverer 101 for secondary separation;

d. the chromic acid mist is pumped into the water immersion tank 103 through the fan 102, pumped into water through the plurality of gas distribution pipes 108, and is subjected to tertiary separation through immersion;

e. entering a first-stage spraying purification tower 104, spraying the chromic acid mist by pure tap water, and separating the chromic acid mist for four times by spraying;

f. entering a gas-liquid separator 109, and performing five times of separation on the chromic acid mist;

g. entering a secondary spraying purification tower 2, and primarily neutralizing the chromic acid mist by spraying an alkaline solution;

h. enters a third-level spray purification tower 3, and is discharged after reaching the standard by carrying out secondary neutralization on chromic acid mist through spraying alkaline solution.

8. The treatment method of the electroplating chromic acid recovery and purification device according to claim 7, which is characterized in that: separating and recovering the chromic acid mist, and then neutralizing; and c, the chromic acid fog is subjected to steps a-f, the chromic acid solution obtained by the primary separation, the secondary separation, the tertiary separation, the quaternary separation and the quintic separation is recovered through a recovery pipe 6, and the recovered chromic acid solution can be recycled.

Technical Field

The invention relates to the technical field of electroplating chromium mist acid treatment, in particular to an electroplating chromic acid recovery and purification device and method.

Background

Chromium deposits have long been used not only as decorative coatings, but also as the primary corrosion resistant coating for mechanical parts. The electroplated hard chromium coating is mainly used for repairing certain damaged parts and has obvious application effect. However, the hard chromium plating process may cause environmental problems because the chromic acid solution required for the chromium plating process may generate chromium-containing acid mist and waste water.

The traditional chromic acid mist treatment mode is that chromic acid mist is treated by introducing the chromic acid mist into an alkaline spray tower to carry out spray neutralization on the chromic acid mist; but the waste water after chromic acid neutralization needs further treatment; not only the chromic acid is wasted, but also more alkaline solution is needed during neutralization, the yield of the neutralized wastewater is larger, and perhaps the wastewater treatment is more laborious, thereby greatly increasing the electroplating production cost.

Disclosure of Invention

Aiming at the technical defects, the invention provides an electroplating chromic acid recovery and purification device and method, wherein the electroplating chromic acid recovery and purification device comprises a chromic acid recoverer, a water immersion tank and a water immersion tank, wherein the right outlet of the chromic acid recoverer is connected with the left inlet of the water immersion tank through a fan; the utility model discloses a chromic acid recovery device, including a water immersion tank, a first order spray purification tower, a filtering net, a water tank heat exchanger, a water immersion tank, a first order spray purification tower and dissolve the medicine case and be connected with tap water pipe respectively, carry out the condensation cooling to the chromic acid fog through low temperature water tank heat exchanger, then filter the net and handle, the chromic acid fog condensation becomes the drop of water, dissolve water treatment through water immersion tank and first order spray purification tower at last, the solution recycle after chromic acid fog condensation and dissolve water, the chromic acid fog carries out multistep recovery earlier, carry out basicity neutralization treatment again with very low concentration, required basicity liquid medicine volume greatly reduced during processing, the concentration after the emission is less than national emission standard far away, and the waste water volume greatly reduced who produces after neutralization, not only energy-concerving and environment-protective, and electroplating cost greatly reduced.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: comprises a chromic acid recovery device, a secondary spraying purification tower, a tertiary spraying purification tower, a dissolving medicine box, a tap water pipe, a recovery pipe and a waste water pipe; the second-stage spraying purification tower and the third-stage spraying purification tower are sequentially arranged on the right side of the chromic acid recovery device; a medicine pump is arranged on one side of the medicine dissolving box, and the medicine is supplied to the second-stage spraying purification tower and the third-stage spraying purification tower through the medicine pump; the second-stage spraying purification tower and the third-stage spraying purification tower are alkaline and are used for neutralizing chromic acid; the chromic acid recovery device comprises a chromic acid recoverer, a fan, a water immersion tank and a primary spray purification tower; the right outlet of the chromic acid recoverer is connected with the left inlet of the soaking water tank through a fan; and the right outlet of the soaking water tank is connected with the inlet of the first-stage spraying purification tower.

Further optimizes the technical proposal, and the left side inside the chromic acid recoverer is provided with a water tank heat exchanger.

Further optimize this technical scheme, water tank heat exchanger, soaking tank, one-level spray purification tower and dissolve the medicine case and be connected with water pipe respectively, the running water supplies water for soaking tank, one-level spray purification tower and dissolving the medicine case after passing through the water tank heat exchanger.

Further optimizing the technical scheme, the water immersion tank is of a closed structure; an air inlet pipe is arranged at the inlet position on the left side of the soaking water tank; the left end of the air inlet pipe is connected with the outlet end of the fan; the other end of the air inlet pipe is provided with an air distribution disc; a plurality of gas distribution pipes are distributed below the gas distribution plate; the outlet of the gas distribution pipe is arranged below the water surface; and the outlet on the right side of the soaking water tank is arranged above the water surface.

Further optimizing the technical scheme, the liquid sprayed by the first-stage spraying purification tower is pure tap water; and a gas-liquid separator is arranged between the first-stage spraying purification tower and the second-stage spraying purification tower and is connected with the first-stage spraying purification tower through the gas-liquid separator.

Further optimizing the technical scheme, the chromic acid recoverer, the water immersion tank, the primary spray purification tower and the gas-liquid separator are respectively connected with the recovery pipe.

Further optimizing the technical scheme, the chromic acid mist treatment method of the electroplating chromic acid recovery and purification device comprises the following steps:

a. the chromic acid fog enters the chromic acid recoverer from the left side;

b. the temperature of the water tank heat exchanger is low, the chromic acid mist is cooled, and the chromic acid mist is condensed into water drops and falls downwards for primary separation.

c. The chromic acid mist reaches the position of a filter screen in the chromic acid recoverer for secondary separation;

d. the chromic acid mist is pumped into the water immersion tank through a fan, pumped into water through a plurality of gas distribution pipes, and is subjected to tertiary separation through immersion;

e. entering a first-stage spraying purification tower, spraying the chromic acid mist by pure tap water, and separating the chromic acid mist for four times by spraying;

f. entering a gas-liquid separator, and carrying out five times of separation on chromic acid mist;

g. entering a secondary spraying purification tower, and preliminarily neutralizing the chromic acid mist by spraying an alkaline solution;

h. and (4) entering a three-stage spraying purification tower, carrying out secondary neutralization on the chromic acid mist by spraying an alkaline solution, and discharging after reaching the standard.

Further optimizing the technical scheme, the chromic acid mist treatment method of the electroplating chromic acid recovery and purification device is characterized in that: separating and recovering the chromic acid mist, and then neutralizing; and c, passing the chromic acid mist through the steps a-f, and recycling the chromic acid solution obtained by the primary separation, the secondary separation, the tertiary separation, the quaternary separation and the quintic separation through a recycling pipe, wherein the recycled chromic acid solution can be recycled.

Compared with the prior art, the invention has the following advantages:

1. the chromic acid mist is condensed and cooled through a low-temperature water tank heat exchanger, then is subjected to filtering grid treatment, is condensed into water drops, and finally is subjected to water dissolving treatment through a water immersion tank and a first-stage spraying purification tower, and the solution obtained after the chromic acid mist is condensed and dissolved in water can be recycled.

2. The chromic acid fog is cooled and condensed forcibly through the low-temperature water tank heat exchanger, the chromic acid fog cooling speed is high, the condensation effect is good, and the chromic acid fog recovery rate is high.

3. The tap water can not only refrigerate the water tank heat exchanger, but also supply water for the soaking tank absorbing chromic acid fog and the first-stage spraying purification tower after passing through the water tank heat exchanger.

4. The chromic acid mist is separated and recovered for five times by sequentially passing through the water tank heat exchanger, the filtering grid, the water immersion tank, the primary spraying purification tower and the gas-liquid separator, and the recovery rate of the chromic acid mist is high.

5. The chromic acid solution recovered by the five times of separation can be intensively conveyed to the electroplating solution distribution area through a single recovery pipe.

6. The acid mist is recycled in multiple steps, alkaline neutralization treatment is carried out at very low concentration, the amount of alkaline liquid medicine required during treatment is greatly reduced, the concentration after discharge is far lower than the national discharge standard, the amount of waste water generated after neutralization is greatly reduced, energy is saved, environment is protected, and the electroplating cost is greatly reduced.

Drawings

FIG. 1 is a schematic view of the distribution of a treatment apparatus of an electroplating chromic acid recovery and purification apparatus.

FIG. 2 is a schematic diagram of the distribution of a spray tower of the electroplating chromic acid recovery and purification device.

FIG. 3 is a schematic diagram showing the distribution of chromic acid recovery pipes of an electroplating chromic acid recovery and purification device.

FIG. 4 is a schematic view showing the distribution of the tap water pipes of the electroplating chromic acid recovery and purification apparatus.

FIG. 5 is a schematic view of the internal structure of a water immersion tank of the electroplating chromic acid recovery and purification device.

FIG. 6 is a process flow diagram of a method for recovering and purifying electroplating chromic acid.

In the figure: 1. a chromic acid recovery unit; 101. a chromic acid recoverer; 102. a fan; 103. a water immersion tank; 104. a first stage spray purification tower; 105. a water tank heat exchanger; 106. an air inlet pipe; 107. a gas distribution plate; 108. a gas distributing pipe; 109. a gas-liquid separator; 2. a secondary spray purification tower; 3. a third stage spray purification tower; 4. dissolving a medicine box; 401. a drug pump; 5. a tap water pipe; 6. a recovery pipe; 7. a waste pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: referring to FIGS. 1 to 6, the device for recovering and purifying electroplating chromic acid is characterized in that: comprises a chromic acid recovery device 1, a secondary spray purification tower 2, a tertiary spray purification tower 3, a medicine dissolving box 4, a tap water pipe 5, a recovery pipe 6 and a waste water pipe 7; the second-stage spraying purification tower 2 and the third-stage spraying purification tower 3 are sequentially arranged on the right side of the chromic acid recovery device 1; a medicine pump 401 is arranged on one side of the medicine dissolving box 4, and medicine is supplied to the second-stage spraying and purifying tower 2 and the third-stage spraying and purifying tower 3 through the medicine pump 401; the second-stage spraying purification tower 2 and the third-stage spraying purification tower 3 are alkaline and are used for neutralizing chromic acid; the chromic acid recovery device 1 comprises a chromic acid recoverer 101, a fan 102, a water immersion tank 103 and a primary spray purification tower 104; the right outlet of the chromic acid recoverer 101 is connected with the left inlet of the soaking water tank 103 through a fan 102; the outlet on the right side of the soaking water tank 103 is connected with the inlet of a first-level spray purification tower 104.

Preferably, a water tank heat exchanger 105 is arranged on the left side inside the chromic acid recoverer 101.

Preferably, the water tank heat exchanger 105, the water immersion tank 103, the primary spray purification tower 104 and the chemical dissolving tank 4 are respectively connected with a tap water pipe 5, and tap water passes through the water tank heat exchanger 105 and then supplies water to the water immersion tank 103, the primary spray purification tower 104 and the chemical dissolving tank 4.

Preferably, the immersion water tank 103 is a closed structure; an air inlet pipe 106 is arranged at the inlet position on the left side of the soaking water tank 103; the left end of the air inlet pipe 106 is connected with the outlet end of the fan 102; the other end of the air inlet pipe 106 is provided with an air distribution disc 107; a plurality of gas distribution pipes 108 are distributed below the gas distribution plate 107; the outlet of the gas distribution pipe 108 is arranged below the water surface; the outlet position on the right side of the soaking water tank 103 is arranged above the water surface.

Preferentially, the liquid sprayed by the first-stage spray purification tower 104 is pure tap water; a gas-liquid separator 109 is arranged between the first-stage spray purification tower 104 and the second-stage spray purification tower 2, and is connected through the gas-liquid separator 109.

Preferably, the chromic acid recoverer 101, the soaking tank 103, the primary spray purification tower 104 and the gas-liquid separator 109 are respectively connected to the recovery pipe 6.

A chromic acid mist treatment method of an electroplating chromic acid recovery and purification device comprises the following steps:

a. the chromic acid mist enters the chromic acid recoverer 101 from the left side;

b. the temperature of the water tank heat exchanger 105 is low, the chromic acid mist is cooled, and the chromic acid mist is condensed into water drops and falls downwards for primary separation;

c. the chromic acid mist reaches the position of a filter screen in the chromic acid recoverer 101 for secondary separation;

d. the chromic acid mist is pumped into the water immersion tank 103 through the fan 102, pumped into water through the plurality of gas distribution pipes 108, and is subjected to tertiary separation through immersion;

e. entering a first-stage spraying purification tower 104, spraying the chromic acid mist by pure tap water, and separating the chromic acid mist for four times by spraying;

f. entering a gas-liquid separator 109, and performing five times of separation on the chromic acid mist;

g. entering a secondary spraying purification tower 2, and primarily neutralizing the chromic acid mist by spraying an alkaline solution;

h. enters a third-level spray purification tower 3, and is discharged after reaching the standard by carrying out secondary neutralization on chromic acid mist through spraying alkaline solution.

A chromic acid mist treatment method of an electroplating chromic acid recovery and purification device is characterized in that: separating and recovering the chromic acid mist, and then neutralizing; and c, the chromic acid fog is subjected to steps a-f, the chromic acid solution obtained by the primary separation, the secondary separation, the tertiary separation, the quaternary separation and the quintic separation is recovered through a recovery pipe 6, and the recovered chromic acid solution can be recycled.

The working principle is that, in combination with the illustration in fig. 1-6, the equipment distribution is, from front to back, chromic acid recoverer 101 → blower 102 → soaking tank 103 → primary spray purification tower 104 → gas-liquid separator 109 → secondary spray purification tower 2 → tertiary spray purification tower 3 in sequence; the water tank heat exchanger 105, the water immersion tank 103, the primary spray purification tower 104 and the chemical dissolving tank 4 are respectively connected with a tap water pipe 5, tap water supplies water for the water immersion tank 103, the primary spray purification tower 104 and the chemical dissolving tank 4 after passing through the water tank heat exchanger 105, electroplated chromic acid mist enters the chromic acid recoverer 101 through the action of acid, the water tank heat exchanger 105 is arranged on the left side inside the chromic acid recoverer 101, and the chromic acid mist reaches the position of the water tank heat exchanger 105 firstly; because of the running water gets into from water tank heat exchanger 105 one end, flows out from the other end to make water tank heat exchanger 105 temperature lower, carry out cooling condensation primary separation to high temperature chromic acid fog through low temperature water tank heat exchanger 105, then rethread filtration net handles secondary separation, and the chromic acid fog condensation becomes the drop of water and falls to chromic acid recoverer 101 inside below.

Gas coming out of the chromic acid recoverer 101 is pumped into the soaking water tank 103 under the action of the fan 102, and the soaking water tank 103 is of a closed structure; an inlet pipe 106 is arranged at the left inlet of the soaking tank 103, the left end of the inlet pipe 106 is connected with the outlet end of the fan 102, an air distribution disc 107 is arranged at the other end of the inlet pipe 106, a plurality of air distribution pipes 108 are distributed below the air distribution disc 107, outlets of the air distribution pipes 108 are arranged below the water surface, and the outlet at the right side of the soaking tank 103 is arranged above the water surface, so that chromic acid gas coming out of the fan 102 can reach the position of the air distribution disc 107 through the inlet pipe 106 and then is discharged from the air distribution pipes 108 below, the air distribution pipes 108 can divide the gas into a plurality of air flows to be injected into the water, the contact area of the chromic acid mist and the water is greatly increased, and the water dissolving rate of the chromic acid mist is greatly improved; the chromic acid mist is pumped into water through the gas distribution pipe 108, and is dissolved in the water, so that the chromic acid mist is separated for three times.

The chromic acid mist coming out of the soaking tank 103 enters the primary spraying purification tower 104, and the liquid sprayed by the primary spraying purification tower 104 is pure tap water, so that the chromic acid mist entering the primary spraying purification tower 104 moves upwards from the lower part, and the chromic acid is absorbed by water spraying, and four times of separation work of the chromic acid mist is realized.

A gas-liquid separator 109 is arranged between the first-stage spray purification tower 104 and the second-stage spray purification tower 2, the gas from the first-stage spray purification tower 104 carries part of water, the water vapor enters the gas-liquid separator 109, and the water and the gas are separated through the gas-liquid separator 109, so that five times of separation work is realized.

After five consecutive separations, most of the chromic acid is completely absorbed by water, and the gas contains almost no chromic acid.

The gas from the gas-liquid separator 109 enters the second-stage spray purification tower 2 and finally enters the third-stage spray purification tower 3, a medicine pump 401 is arranged on one side of the medicine dissolving box 4, and medicine is supplied to the second-stage spray purification tower 2 and the third-stage spray purification tower 3 through the medicine pump 401; the second-stage spraying purification tower 2 and the third-stage spraying purification tower 3 are alkaline and used for neutralizing chromic acid, and gas is discharged from an exhaust pipe above the third-stage spraying purification tower 3 after being neutralized twice in the second-stage spraying purification tower 2 and the third-stage spraying purification tower 3 and reaching the standard.

Tap water first passes through the internal pipeline of the water tank heat exchanger 105 to forcibly cool and refrigerate the water tank heat exchanger 105, and then water is respectively supplemented to the water immersion tank 103, the primary spray purification tower 104 and the medicine dissolving tank 4 through water supplementing pipelines.

Chromic acid solution separated from the chromic acid recoverer 101, the water immersion tank 103, the primary spray purification tower 104 and the gas-liquid separator 109 is concentrated to a main pipeline through a recovery pipe 6 and then sent to a dispensing area, and the chromic acid solution can be recycled.

The solution after alkaline neutralization from the secondary spray purification tower 2 and the tertiary spray purification tower 3 enters a wastewater pipe 7 and is finally sent to a wastewater treatment plant for treatment.

In conclusion, the chromic acid mist is condensed and cooled through the low-temperature water tank heat exchanger 105, then is subjected to filtering grid treatment, is condensed into water drops, and finally is subjected to water dissolving treatment through the water immersion tank 103 and the primary spraying purification tower 104, and the solution obtained after chromic acid mist condensation and water dissolving can be recycled; the chromic acid mist is cooled and condensed forcibly through the low-temperature water tank heat exchanger 105, the chromic acid mist cooling speed is high, the condensation effect is good, and the chromic acid mist recovery rate is high.

The acid mist is recycled in multiple steps, alkaline neutralization treatment is carried out at very low concentration, the amount of alkaline liquid medicine required during treatment is greatly reduced, the concentration after discharge is far lower than the national discharge standard, the amount of waste water generated after neutralization is greatly reduced, energy is saved, environment is protected, and the electroplating cost is greatly reduced.

The tap water can not only refrigerate the water tank heat exchanger 105, but also supply water to the soaking water tank 103 absorbing chromic acid mist and the primary spray purification tower 104 after passing through the water tank heat exchanger 105; the chromic acid mist is separated and recovered for five times by sequentially passing through a water tank heat exchanger 105, a filtering grid, a water immersion tank 103, a primary spray purification tower 104 and a gas-liquid separator 109, and the recovery rate of the chromic acid mist is high; the chromic acid solution recovered by the five times of separation can be intensively conveyed to the electroplating solution distribution area through a single recovery pipe 6.

The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the invention belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.