KR102167977B1 - Apparatus for plating printed circuit board - Google Patents

Abstract

The present invention is a plating treatment of a printed circuit board to reduce water pollution damage caused by harmful waste water by separating and discharging sludge containing nickel sulfate and lubricating oil contained in the electroless nickel plating wastewater generated in the surface treatment of the printed circuit board. It relates to the device. The present invention includes at least one plating bath, at least one washing bath; In the plating treatment apparatus for a printed circuit board comprising a scrubber and a wastewater treatment device for treating contaminated air and waste liquid generated in the plating bath and the washing tank, the wastewater treatment unit is a wastewater supply pipe from the plating bath and the washing tank A rotating enclosure for raising and discharging the wastewater discharged through it while rotating; A sludge collection assembly around the inside of the rotary enclosure; An electromagnet installed around the outer periphery of the rotating enclosure; A wastewater collection part formed between the outer circumference of the rotating case and the inner circumference of the fixed case; And a rotary motor coupled with a coupling fixedly installed on the bottom plate of the rotary enclosure.

Description

Plating processing device for printed circuit boards{APPARATUS FOR PLATING PRINTED CIRCUIT BOARD}

The present invention relates to an apparatus for plating a printed circuit board. More specifically, the present invention separates and discharges sludge containing nickel sulfate and lubricating oil contained in electroless nickel plating wastewater (waste liquid) generated in the surface treatment of printed circuit boards, thereby expediting the plating process and water quality due to harmful wastewater. It is to reduce pollution damage.

In general, wastewater generated from an industrial facility such as a plating plant is a problem because it contains various heavy metals, apart from a large amount or a small amount. In particular, since the plating object is immersed in a liquid in a plating bath or a washing bath during the plating process, the wastewater generated has no choice but to contain heavy metals that can be fatal even in small amounts.

On the other hand, from the viewpoint of air pollution, in the case of a copper compound in a vapor state generated in a copper plating tank, even if a small amount is inhaled, it may cause respiratory diseases or severe irritation to the eyes or skin. Heavy metals such as lead also exist in the form of particles of about 1 micron in the atmosphere, and can cause various diseases by entering the human body through the respiratory tract and accumulating.

In this way, in order to treat wastewater and polluted atmosphere generated in the plating plant, various facilities are provided in the plating plant. In this system, the polluted atmosphere generated in the plating tank and the washing tank is in the plating tank hood and the washing tank hood respectively. It is collected and flows into the scrubber through a duct connected to the blower.

The polluted atmosphere introduced into the inside of the scrubber through the inlet of the scrubber rises to the exhaust hood side, and when passing through the carrier tank, it contacts the water sprayed through the nozzle, and a cone, which is a plurality of unit carriers included in the carrier tank Alternatively, while contacting the surface of a porous medium, odors or pollutants are stored with water in a storage tank underneath, and the purified air is discharged into the atmosphere through an exhaust hood.

On the other hand, the wastewater generated from the plating tank is separately collected and sent to a specialized treatment device, and the solid content such as sludge is treated by a separate discharge facility through treatment such as drying. Wastewater generated from the flushing tank is transferred to the external wastewater treatment unit through the drain pipe.

Sent and processed.

In such a conventional system for treating wastewater and polluted air, it is suitable for the treatment of odors in the polluted atmosphere treated by the scrubber, but in the treatment of heavy metals in the atmosphere, traces of heavy metals are still contained in the atmosphere discharged from the exhaust hood. to be. In addition, since the waste liquid generated in the plating tank is not sent directly to the wastewater treatment unit but must be stored and treated separately, transportation and storage costs are incurred, and disadvantages in the plating process occur.

In order to solve this problem, a coating composition capable of adsorbing heavy metals on the surface of a carrier through Registration Patent No. 10-1373903 owned by the present applicant and a system for treating wastewater and polluted atmosphere using the same is proposed. have.

That is, a waste liquid treatment device for treating waste liquid generated in the plating tank and the washing tank; further comprising, the waste liquid treatment device including a waste water inlet through which the waste liquid generated in the plating tank and the washing tank flows; A supply pipe installed above the waste liquid treatment device; A nozzle for spraying water supplied from the supply pipe; A carrier tank installed under the nozzle; A storage tank installed below the support tank; And a drain installed in the storage tank to discharge the treated waste liquid. It consists of, and improves the discharged water quality by improving the ability to adsorb heavy metals contained in the waste liquid generated in the plating tank and the washing tank by applying a carrier coating composition for adsorption of heavy metals to the carrier tank.

However, the ability of adsorbing and removing heavy metals contained in the waste liquid by using the above composition for carrier coating for heavy metal adsorption can be excellent, but the object to be plated in the plating bath may be treated according to the processing material, processing method, and processing conditions. In some cases, lubricants made of non-aqueous oil are not only deposited, but also sludge (sediment) generated during plating, so that heavy metals are mixed with the non-aqueous oil and sludge and are supplied to the inside through the carrier. In the carrier coating composition for heavy metal adsorption, a film phenomenon occurs between the heavy metal and the adsorption coating composition due to the non-aqueous oil and sludge, which hinders adsorption, and thus a problem of greatly deteriorating the heavy metal adsorption capacity is pointed out.

In particular, when electroless nickel plating, which is generated in the surface treatment of electronic parts, contains nickel phosphite and is discharged to the wastewater treatment unit, there is a large amount of waste, which has a profound effect on environmental pollution, and because the recycling of nickel is not adopted, electroless nickel An uneconomical problem is pointed out in terms of securing resources because the cost of raw materials for plating is excessive.

In order to solve these problems, the applicant of the present invention has at least one plating bath, at least one washing bath, as in Registration Patent No. 10-1897412; A scrubber and a waste liquid processor for treating contaminated air and waste liquid generated in the plating tank and the washing tank; A wastewater treatment unit for treating a waste liquid from which heavy metals are adsorbed and removed by a heavy metal adsorption composition applied to the surface of a carrier installed inside the wastewater treatment machine; A plating facility comprising a nickel sulfate recovery device between the plating tank and the washing tank and the waste liquid treatment device, and installing an oil and fat and organic matter removal processor between the nickel sulfate recovery device and the waste liquid treatment device. Air and water pollution prevention systems have been proposed.

This prior art promotes environmental preservation by recovering and recycling nickel sulfate contained in the waste liquid generated in the plating tank and the washing tank, and economic benefits can be obtained through resource recycling. By removing non-aqueous oils and fats such as lubricating oil contained in the inside, it eliminates the impairment of the adsorption capacity of heavy metals by the lubricating film between the heavy metals and the adsorption composition, thereby enhancing the ability to adsorb heavy metals more efficiently. By decomposing the decomposable organic substance (COD) and supplying it to the waste liquid processor, it may have the effect of greatly improving the water quality of the discharged waste liquid, but oil and fat between the nickel sulfate recovery device and the waste liquid treatment device Since the organic matter removal processor is installed, the installation configuration is complicated, and the facility cost for the establishment of the plating facility is excessive. The nickel sulfate can be recovered, but the sludge contained in the nickel sulfate is treated by a separate maintenance and organic matter removal processor. The sludge treatment is very insufficient, and the oil such as lubricating oil generated during plating can be filtered by the filter material to transfer the waste liquid to the waste water treatment system.However, the replacement of the filter material is difficult, so that the oil filtration defect rate due to the filter material failure is reduced when used for a long time. It is pointed out a problem that has an adverse effect on wastewater treatment as it is discharged in a state where oil is contained in the waste liquid.

Registered Patent No. 10-1373903 Registered Patent No. 10-1897412

The present invention makes it a technical task to improve the quality of wastewater by separating nickel sulfate, sludge, and lubricant contained in wastewater generated during electroless nickel plating on a printed circuit board.

In particular, the present invention provides a device capable of separating nickel sulfate and lubricating oil, including sludge, from the inside of the wastewater treatment unit constituting the plating facility, thereby reducing the installation cost required for the construction of the plating facility.

The present invention includes at least one plating bath, at least one washing bath; In the plating treatment apparatus for a printed circuit board comprising a scrubber and a wastewater treatment device for treating polluted atmosphere and waste liquid generated in the plating bath and washing tank, the wastewater treatment unit is a wastewater supply pipe from the plating bath and the washing tank A rotating enclosure for raising and discharging the wastewater discharged through it while rotating; A sludge collection assembly around the inside of the rotary enclosure; An electromagnet installed around the outer periphery of the rotating enclosure; A wastewater collection part formed between the outer circumference of the rotating case and the inner circumference of the fixed case; And a rotary motor coupled with a coupling fixedly installed on the bottom plate of the rotary enclosure.

The present invention provides a plating treatment device capable of reducing water pollution damage caused by harmful wastewater by separating and discharging nickel sulfate and lubricating oil contained in waste liquid generated in a plating bath for plating a printed circuit board and a washing bath. Have.

In addition, the present invention improves the speed of the plating operation of the printed circuit board by separately separating the sludge containing nickel sulfate and the lubricating oil through one wastewater treatment device constituting the plating treatment apparatus for the printed circuit board to perform wastewater treatment. It has the effect of improving the output of printed circuit boards and discharging wastewater that does not contain sludge and lubricating oil, thereby improving the function of preventing water pollution and reducing the construction cost of the wastewater treatment device.

1 is a schematic diagram of an entire system of a plating apparatus for a printed circuit board for treating wastewater and contaminated atmosphere for explaining the present invention.
2 is a cross-sectional view of a wastewater treatment apparatus according to a first embodiment of the present invention.
Figure 2a is a cross-sectional view of the operation state of the wastewater treatment apparatus according to the present invention.
2B is a cross-sectional view of a main part of the wastewater treatment apparatus according to the present invention.
2C is a separated cross-sectional view showing a state of separating the sludge collection aggregate of the wastewater treatment apparatus according to the present invention.
3 is a perspective view of a sludge collection assembly according to the present invention.
4 is a cross-sectional view of a main part according to another embodiment of the wastewater treatment apparatus according to the present invention.
5 is a cross-sectional view according to a second embodiment of the wastewater treatment apparatus according to the present invention.
6 is a cross-sectional view according to another embodiment of the wastewater treatment apparatus according to the present invention.

First of all, prior to describing the present invention, it is necessary to address the printed circuit board by separating and discharging sludge containing nickel sulfate, lubricating oil, and wastewater through a single enclosure in the wastewater treatment unit constituting the plating treatment device for the printed circuit board. The technical point is to improve the speed of the substrate plating operation and reduce the water pollution of wastewater.

1 is a schematic diagram of the entire system of a plating treatment apparatus according to the present invention, and FIG. 2 is a cross-sectional view of a wastewater treatment apparatus according to the present invention according to a first embodiment.

1 and 2, the present invention provides at least one plating bath 10, at least one washing bath 20; In the plating treatment apparatus for a printed circuit board comprising a scrubber 30 and a wastewater treatment unit 40 for treating polluted air and wastewater generated in the plating bath 10 and the washing bath 20, the The wastewater treatment unit 40 includes a wastewater supply guide pipe 42 connected to a wastewater supply pipe 41 for supplying wastewater discharged from the plating bath 10 and the washing bath 20 through a pump P1; An internal rotating enclosure 43 in which the wastewater supply guide pipe 42 is installed therein; A fixed case 44 installed outside the inner rotating case 43; A fixed cylindrical body 45 installed at a predetermined interval around the outer periphery of the inner rotating enclosure 43; A wastewater collection part 46 formed between the inner circumference of the fixed enclosure 44 and the outer circumference of the fixed cylindrical body 45; And a sludge collection assembly 47 installed around the inner circumference of the inner rotating enclosure 43, and configured by installing an electromagnet M around the outer circumference of the inner rotating enclosure 43, and rotating the inner A rotating motor 50 coupled with a coupling 51 fixedly installed on the lower outer surface of the bottom plate 43' of the enclosure 43; is constructed by installing and fixedly installed on the upper part of the inner rotating enclosure 43 A bearing (B) is installed between the upper circumference of the rotating cylinder 49 coupled with the other end of the fixing bracket 48 and the circumference of the cylindrical portion inside the upper inner portion of the fixing box 44, and the wastewater collecting unit 46 Consisting of installing a wastewater discharge port 46-1 and a lubricant discharge hole 46-2 on one side and the other side, respectively, a lubricant detection sensor inside the inner rotary enclosure 43 on one side of the upper end of the lubricant discharge hole 46-2 (46-3) is installed and configured, and the sludge discharge hole 47-4 formed around the outer circumference of the bottom plate 43 ′ of the inner rotating enclosure 43 and the inner circumference of the lower end of the inner rotating enclosure 43 is opened and closed. It can be configured by installing a cover (43-1), in which the rotation motor 50 is fixedly installed on the lower outer surface of the coupling installed on the shaft of the rotation motor 50 and the bottom plate 43'. It is installed in combination with the coupling 51, and the inner rotating enclosure 43 is preferably made of stainless steel. In the drawings, 11 and 21 are hoods, and 10' and 20' are drains.

In the above, the fixing bracket 48 is a plurality of brackets installed at regular intervals, and is configured to pass the wastewater raised and discharged between the fixing bracket 48 and the fixing bracket 48, and the wastewater discharge port 46-1 A pump P2 may be installed in the connected discharge pipe 46-1', and the lubricant discharge pipe 46-2' connected to the lubricant discharge hole 46-2 is provided with a lubricant detection sensor 46-3. An operating solenoid valve (V) may be installed.

In addition, the sludge collection assembly 47 installed around the inner circumference of the inner rotating enclosure 43 is a nonwoven fabric or a sludge passage hole in the form of a net formed with an oil paper 47-1 and a sludge passage hole 47-2 ′ on the outside. Consisting of a sludge passage member 47-2 made of a porous foamed rubber with (47-2') formed therein, and the upper inner surface of the oil paper 47-1 and the upper end of the sludge passage member 47-2 The side is adhered, but the sludge collecting part 47- is installed between the lower inner circumference of the oil paper 47-1 and the lower outer circumference of the sludge passing member 47-2 by installing the sludge passage member 47-2 at an angle. 3) can be configured to be formed, and the upper and lower bent portions 47-1 ′ and 47-1 ″ of the oil paper 47-1 are placed on the upper and lower ends of the sludge passage member 47-2, as shown in FIG. , The bottom fitting concave inlet (47-2") (47-2'") is fitted and coupled, but the upper part of the oil paper 47-1 and the upper part of the sludge passing member 47-2 are internally rotated. 43) The lower rim of the sludge collection assembly 47 installed on the inner upper part of the fitting part 43B and installed around the inner circumference of the inner rotating enclosure 43 is interviewed on the upper surface of the cover 43-1 So that the lower outer circumferential surface of the sludge passage member 47-2 constituting the sludge collection assembly 47 is supported by the outer circumferential surface of the bottom plate 43', so that the sludge collection assembly 47 is in a solid state. Can be installed.

In addition, the cover 43-1 for opening and closing the sludge discharge hole 47-4 protrudes a fitting protrusion 43-1 ′ protruding at an upper portion thereof to form a lower surface and a bottom plate of the inner rotating enclosure 43. (43') It is possible to seal the lower side of the inner rotating enclosure 43 by combining with the fitting grooves 43A (43'-1) formed in each, and when opened, protruding from the bottom of the cover 43-1 One handle (43-1'") can be pulled to open, and when the cover (43-1) is opened, the sludge collection assembly 47 is separated from the inner rotating enclosure 43 as shown in FIG. The collection assembly 47 can be replaced or washed to be reused, and the cover 43-1 and the bottom plate 43' can be prevented from leaking with a rubber packing, not shown.

In the above, the lower part of the bottom plate 43 ′ is interviewed and supported on the upper surface of the fixed support space 44-1 fixed to the lower frame of the fixed housing 44, and the upper surface of the fixed support space 44-1 The bottom plate 43 ′ is rotated and the bottom plate 43 is rotated by the operation of the rotary motor 50 coupled with the coupling 51 and the lower part of the bottom plate 43 ′ is coupled by a bearing B′. ') and the cover (43-1) coupled to the cover (43-1) and the inner rotating housing (43) is rotated, and the rotating cylinder (49) coupled with the fixing bracket (48) is freely rotated. do.

In addition, in the present invention, an electromagnet (M) is installed around the outer periphery of the inner rotating enclosure 43, but a permanent magnet (M') is installed around the inner perimeter of the fixed cylindrical body 45 as shown in FIG. can do.

On the other hand, the scrubber 30 includes a carrier tank 31, and the nozzle 32 installed on the top of the carrier tank 31 transfers water supplied by the pump 33 to the carrier tank 31. Spray to the top. The sprayed water is mixed with the polluted atmosphere in the carrier tank 31, after which the water moves to the storage tank 34 below, and the polluted atmosphere is purified and discharged into the atmosphere through the exhaust hood 35. S is the blower.

The present invention having such a configuration is a wastewater supply guide pipe connecting the wastewater discharged from the plating bath 10 and the washing bath 20 of the plating treatment apparatus to the wastewater supply pipe 41 through a pump P1 as shown in FIG. 42) and supplying it to the inside of the inner rotating enclosure 43 of the wastewater treatment machine 40, and operating the rotating motor 50 and the electromagnet M, the wastewater discharged below the wastewater supply guide pipe 42, the The inner side of the sludge passage member (47-2) constituting the sludge collection assembly (47) while the sludge (NR) and lubricating oil containing the wastewater and the contained nickel sulfate fall and rotate according to the rotation of the internal rotating enclosure (43). The wastewater that rises along the circumferential surface, and the sludge (NR) containing nickel sulfate contained in the wastewater and the wastewater is increased by the magnetic force of the electromagnet (M) to the sludge passage hole (47-) of the sludge passage member (47-2). 2') through the oil paper (47-1) inside the sludge collection portion (47-3), and the lubricating oil flowing into the sludge collection portion (47-3) together with the sludge is a nonwoven fabric or porous As it rises along the inner surface of the sludge passage member 47-2 made of foamed rubber, it is transferred to the upper side of the inner rotating enclosure 43 and collected by the wastewater collection unit 46, and at the same time, wastewater is also collected by the wastewater collection unit 46. .

In the above, the sludge containing nickel sulfate (NR) through the sludge passage hole 47-2' of the sludge passage member 47-2 by the magnetic force of the electromagnet M when the inner rotating enclosure 43 is rotated. As the lubricating oil is introduced, the lubricating oil also flows into the sludge collection part 47-3. At this time, the lubricating oil is not absorbed by the oil paper 47-1 and the inner surface of the sludge passing member 47-2, that is, a sludge passing member made of nonwoven fabric. As the inner layer of (47-2) or the porosity of the sludge passage member (47-2) made of foam rubber rises as shown in the dotted line in Fig. 2b, it is collected by the wastewater collection unit (46), and the sludge collection unit (47-3) ), the sludge (NR) containing nickel sulfate collected is discharged to the sludge storage container 60 through the opening of the cover 43-1 as described above, and the lubricant and wastewater collected by the wastewater collection unit 46 The heavy lubricant is separated from the wastewater due to the oil component and is located in the upper layer of the wastewater.This lubricant opens the solenoid valve V in response to the detection of the lubricant detection sensor 46-3, and the lubricant discharge hole 46-2 Through the lubricating oil discharge pipe (46-2') is discharged to the lubricating oil storage tank (70), and the wastewater from which sludge and lubricating oil are separated is discharged through the wastewater discharge port (46-1) according to the operation of the pump (P2). 80), the sludge, lubricant and wastewater are discharged separately.

Accordingly, the present invention can perform the plating operation through one wastewater treatment unit 40, thereby shortening the plating process of the printed circuit board to improve the production amount of the plated printed circuit board, thereby reducing the manufacturing cost of the printed circuit board. The wastewater generated during the plating of printed circuit boards is discharged without mixing sludge and lubricant, which is of great help in improving water pollution.

Although the present invention does not address the post-treatment problem of the sludge (NR) containing nickel sulfate, this sludge post-treatment can separate the sludge and nickel sulfate through a separate separator, thereby helping to recover nickel sulfate. .

On the other hand, Figure 5 is a cross-sectional configuration diagram according to the second embodiment of the wastewater treatment machine 40 according to the present invention, the shaft 50A of the rotary motor 50 is rotated by extending the shaft 50A to the top inside the bottom plate 43' A blade piece (50-1) is installed and configured, and a wastewater guide separator (42-1) is installed in the lower side of the wastewater supply guide pipe (42), and the supplied wastewater falls onto the rotor blade piece (50-1). It may be configured to be, and the shaft 50A of the rotary motor 50 fitted to the bottom plate 43' may be installed by a bearing B".

In this embodiment, since the inner rotating enclosure 43 and the rotor blade 50-1 can be rotated at the same time, the rotor blade 50-1 through the guide separation port 42-1 of the wastewater supply guide pipe 42 As the falling wastewater collides with the rotor blade 50-1, it rises along the inner surface of the sludge passage member 47-2, so that the wastewater, sludge and lubricant can be separated more quickly, as well as crushing the falling sludge. As a result, the sludge flows smoothly into the sludge passage member 47-2, making it very easy to collect sludge.

It should be noted that the detailed description of the present invention described above is for illustrative purposes only and does not define the scope of the present invention. The scope of the present invention is defined by the appended claims below, and simple modifications and changes within this range should be understood as belonging to the scope of the present invention.

10: plating bath 10': drain
11, 21: hood 20: washing tank
20': drain P1, P2: pump
30: scrubber 31: carrier tank
32: nozzle 33: pump
34: reservoir 35: exhaust hood
40: wastewater treatment unit 41: wastewater supply pipe
42: wastewater supply guide pipe 43: internal rotating enclosure
43': bottom plate 43-1: cover
43'-1': fitting protrusion 43A, 43'-1: fitting groove
44: fixed cylindrical body 46: wastewater collection unit
46-1: wastewater discharge port 46-2: lubricant discharge hole
46-3: lubricant detection sensor 47: sludge collection
48: fixing bracket 49: rotating cylinder
50: rotary motor 50-1: rotor blade
B, B': bearing M: electromagnet
M': permanent magnet V: solenoid valve
NR: Sludge containing nickel sulfate

Claims (7)

At least one plating bath 10, at least one washing bath 20 and; A scrubber 30 and a wastewater treatment device 40 for treating polluted air and wastewater generated in the plating tank 10 and the washing tank 20; but, the wastewater treatment device 40 includes the plating tank 10 ) And a wastewater supply guide pipe 42 connected to a wastewater supply pipe 41 for supplying wastewater discharged from the washing tank 20 through the pump P1; An internal rotating enclosure 43 in which the wastewater supply guide pipe 42 is installed therein; A fixed case 44 installed outside the inner rotating case 43; A fixed cylindrical body 45 installed at predetermined intervals around the outer circumference of the inner rotating enclosure 43; A wastewater collection part 46 formed between the inner circumference of the fixed enclosure 44 and the outer circumference of the fixed cylindrical body 45; And a sludge collection assembly 47 installed on the inner circumference of the inner rotating enclosure 43, and configured by installing an electromagnet M around the outer circumference of the inner rotating enclosure 43, and the inner rotating enclosure 43 ) A rotating motor 50 coupled with a coupling 51 fixedly installed on the lower outer surface of the bottom plate 43' of the bottom plate 43', and a fixed bracket fixedly installed on the upper part of the inner rotating enclosure 43 A bearing (B) is installed between the upper circumference of the rotating cylinder 49 coupled to the other end of 48) and the circumference of the cylindrical portion inside the upper inner side of the fixed housing 44, and is configured by installing a bearing (B) on one side and the other side of the wastewater collection unit 46 In an apparatus for plating a printed circuit board comprising a wastewater discharge port 46-1 and a lubricant discharge hole 46-2, a lubricant discharge pipe 46-2' connected to the lubricant discharge hole 46-2 The solenoid valve (V) operated by the lubricant detection sensor (46-3) is configured to be installed, and around the outer circumference of the bottom plate 43 ′ of the inner rotating enclosure 43 and the inner circumference of the lower end of the inner rotating enclosure 43 The formed sludge discharge hole (47-4) is constructed by installing a cover (43-1) that opens and closes, and the oil paper (47-) constituting the sludge collection assembly (47) installed around the inner rotating enclosure (43). 1) the upper and lower bent portions (47-1') (47-1") of the sludge passing member (47-2) are inserted into the upper and lower fitting concave portions (47-2") (47-2'") It is configured by fitting and combining, but the upper part of the oil paper (47-1) and the upper part of the sludge passage member (47-2) are inserted into the fitting part (43B) installed at the inner upper part of the inner rotating enclosure (43), and the internal rotating enclosure (43) The lower rim of the sludge collection assembly 47 installed around the inner circumference is interviewed on the upper surface of the cover 43-1, and the lower portion of the sludge passage member 47-2 constituting the sludge collection assembly 47 The outer circumferential surface is configured to be supported by the outer circumferential surface of the bottom plate 43', and the shaft 50A of the rotary motor 50 is extended to the upper part of the bottom plate 43' so that the rotor blade 50-1 Install and configure the wastewater supply guide pipe 2) A plating treatment apparatus for a printed circuit board, characterized in that a wastewater guide separator (42-1) is installed in the lower side of the substrate so that the supplied wastewater falls on the rotor blade piece (50-1). delete delete delete delete delete According to claim 1, wherein the cover (43-1) for opening and closing the sludge discharge hole (47-4) is formed by protruding a fitting protrusion (43-1') protruding on the inner upper portion of the lower portion of the inner rotating enclosure (43). Plating processing apparatus for a printed circuit board, characterized in that the combination of the fitting groove (43A) (43'-1) formed in each of the surface and the bottom plate (43').

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