JP3553178B2 - Spray fluxer exhaust gas treatment method and apparatus - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a method and an apparatus for treating exhaust gas of a spray fluxer for applying a flux to a plate to be soldered, which is to be soldered by a jet-type solder bath or the like.
[0002]
[Prior art]
Generally, a board to be soldered such as a printed wiring board to be soldered by a jet-type solder bath or the like has a flux applied in advance to a surface to be soldered. A spray fluxer that sprays and applies a flux sprayed from a spray nozzle to a plate to be soldered is used as the flux coating device.
[0003]
Spray fluxers are widely used because of their excellent flux application uniformity and controllability.However, it is indispensable to install a device for collecting flux that has not been applied to the plate to be soldered. is there.
[0004]
As a general recovery device, for example, a suction port body is arranged at a position facing the spray nozzle, and rosin in the flux is separated and recovered by a cyclone or the like from the exhaust gas forcibly sucked from this suction port body by a blower. However, the solvent in the flux is difficult to recover and is released to the atmosphere.
[0005]
For example, an organic solvent such as isopropyl alcohol (hereinafter, referred to as IPA) is generally used as a solvent in the flux, but from the viewpoint of environmental protection, the emission of volatile organic compounds (Volatile Organic Compound) to the atmosphere is suppressed. Therefore, it is necessary to avoid using the organic solvent such as the IPA as a solvent.
[0006]
On the other hand, as a flux that does not use an organic solvent such as the IPA as a solvent, a flux using water as a solvent is known. However, this type of flux cannot be immediately put into practical use, and is particularly important in promoting practical use. It is necessary to pay attention to the exhaust.
[0007]
[Problems to be solved by the invention]
That is, when a flux using water as a solvent is used for a spray fluxer, the exhaust gas discharged to the atmosphere contains alkaline amines, ammonia, etc., which is not preferable in terms of air pollution or odor, and these The components may corrode the exhaust duct and the like.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a method and an apparatus for treating an exhaust gas of a spray fluxer capable of preventing air pollution due to atmospheric release of alkaline amines and the like. is there.
[0009]
[Means for Solving the Problems]
According to the first aspect of the present invention, the flux sprayed from the spray nozzle is sprayed and applied to the board to be soldered, and the flux not applied to the board to be soldered is forcibly sucked from the suction port body and exhausted. This is an exhaust gas treatment method for a spray fluxer in which an exhaust gas is neutralized with a neutralizing agent in the spray fluxer to be treated.
[0010]
According to the second aspect of the present invention, the flux sprayed from the spray nozzle is sprayed and applied to the board to be soldered, and the flux not applied to the board to be soldered is forcibly sucked from the suction port body and exhausted. In a spray fluxer to be treated, a filter body interposed in an exhaust pipe of exhaust gas, a filter medium mounted in the filter body, and a neutralizing solution for neutralizing exhaust gas supplied to and impregnated in the filter medium. An exhaust gas treatment apparatus for a spray fluxer having a configuration including a Japanese liquid supply unit.
[0011]
According to a third aspect of the present invention, the flux sprayed from the spray nozzle is sprayed and applied to the board to be soldered, and the flux not applied to the board to be soldered is forcibly sucked from the suction port body and exhausted. In a spray fluxer to be processed, a filter body interposed in an exhaust pipe of exhaust gas, a shower room formed in the filter body, a shower nozzle provided at an upper part of the shower room, and exhaust air to the shower nozzle An exhaust gas treatment device for a spray fluxer having a configuration including a neutralizing solution supply system for supplying a neutralizing solution for gas neutralization, and an exhaust gas inlet and an outlet provided in the filter body via the shower chamber. is there.
[0012]
According to a fourth aspect of the present invention, the flux sprayed from the spray nozzle is sprayed and applied to the board to be soldered, and the flux not applied to the board to be soldered is forcibly sucked from the suction port body and exhausted. In a spray fluxer to be processed, a filter body interposed in an exhaust pipe of exhaust gas, a shower room formed in the filter body, and a shower nozzle provided at an upper portion where the exhaust gas is introduced in the shower room And a neutralizing solution supply system for supplying a neutralizing solution for neutralizing exhaust gas to the shower nozzle, and a filter provided below the shower nozzle and upstream of an exhaust gas outlet. It is a flaxer exhaust gas treatment device.
[0013]
According to a fifth aspect of the present invention, in the exhaust gas treatment apparatus for a spray fluxer according to any one of the second to fourth aspects, a dry filter is provided at an opening of the suction port body.
[0014]
According to the invention described in claim 6, the flux sprayed from the spray nozzle is sprayed and applied to the board to be soldered, and the flux not applied to the board to be soldered is forcibly sucked from the suction port body and exhausted. In the spray fluxer to be treated, a spray fluxer having a structure provided with a filter material provided at an opening of a suction port body and a neutralizing solution supply unit for supplying and impregnating a neutralizing solution for neutralizing exhaust gas to the filter material. It is an exhaust gas treatment device.
[0015]
According to a seventh aspect of the present invention, in the exhaust gas treatment apparatus for a spray fluxer according to the sixth aspect, a sheet-like filter medium is provided so as to be able to endlessly rotate through an opening of a suction port body.
[0016]
According to an eighth aspect of the present invention, in the exhaust gas treatment device for a spray fluxer according to the sixth aspect, a sheet-like filter medium fed from a roll disposed on one side of the suction port body is provided with an opening of the suction port body. After that, it is configured to be wound around a roll arranged on the other side of the suction opening body.
[0017]
According to a ninth aspect of the present invention, in the exhaust gas treatment apparatus for a spray fluxer according to any one of the sixth to eighth aspects, the neutralizing liquid supply unit is provided on a filter medium supply side of the suction port body. It has a liquid storage tank and a sponge roller rotatably provided in the tank and in contact with a sheet-like filter medium.
[0018]
According to a tenth aspect of the present invention, in the exhaust gas treatment apparatus for a spray fluxer according to the ninth aspect, the tank is provided so as to be movable along the sheet-like filter medium.
[0019]
According to an eleventh aspect of the present invention, in the exhaust gas treatment apparatus for a spray fluxer according to any one of the sixth to tenth aspects, a cleaning unit for cleaning a sheet-like filter medium is provided on the filter medium recovery side from the suction port. The configuration is as follows.
[0020]
According to a twelfth aspect of the present invention, in the exhaust gas treatment apparatus for a spray fluxer according to any one of the second to eleventh aspects, the alkalinity of the filter medium is detected to detect deterioration of the neutralization ability of the filter medium. This is a configuration provided with a detecting means.
[0021]
[Action]
According to the first aspect of the present invention, the flux sprayed from the spray nozzle is sprayed and applied to the board to be soldered, and the flux not applied to the board to be soldered is forcibly sucked from the suction port body and exhausted. To process. At this time, by subjecting the exhaust gas to a neutralizing treatment with a neutralizing agent, alkaline amines and the like are removed from the exhaust gas released to the atmosphere.
[0022]
According to the second aspect of the present invention, the exhaust gas sucked from the suction port body is guided into the filter main body through the exhaust pipe line, and when the filter medium is permeated, the exhaust gas is supplied to the filter medium from the neutralizing liquid supply unit and impregnated. Exhaust gas is neutralized with the neutralized solution, and alkaline amines and the like are removed from the exhaust gas and released to the atmosphere.
[0023]
According to the third aspect of the present invention, the exhaust gas sucked from the suction port body is guided to the shower room from the inlet of the filter body through the exhaust pipe, and the neutralization sprayed or sprayed from the upper shower nozzle to the entire shower room. By contacting the liquid with the exhaust gas, the exhaust gas is subjected to a neutralization treatment, an alkaline amine or the like is removed from the exhaust gas, and the exhaust gas is discharged from the outlet.
[0024]
According to the invention described in claim 4, the exhaust gas sucked from the suction port body is guided to the shower room of the filter body through the exhaust pipe, and the neutralized liquid sprayed or sprayed from the upper shower nozzle to the entire shower room. Neutralizing treatment is performed by contacting the exhaust gas.Furthermore, the neutralizing solution spouted from the shower nozzle and impregnated into the filter medium also neutralizes the exhaust gas when passing through the filter medium, such as alkaline amine in the exhaust gas. Is removed.
[0025]
According to a fifth aspect of the present invention, the exhaust gas is neutralized with the neutralizing solution according to any one of the second to fourth aspects, after the flux particles are captured and removed by a dry filter at the opening of the suction port body.
[0026]
According to the invention described in claim 6, the flux sprayed from the spray nozzle is sprayed and applied to the board to be soldered, and the flux not applied to the board to be soldered is forcibly sucked from the suction port body and exhausted. To process. At that time, the exhaust gas is sucked into the suction port through the filter material impregnated with the neutralizing solution supplied from the neutralizing solution supply unit, and the exhaust gas is neutralized by the neutralizing solution in the filter material. To remove alkaline amines and the like.
[0027]
According to the invention described in claim 7, when the neutralizing ability of the sheet-shaped filter medium having been subjected to the neutralization treatment of the exhaust gas at the opening of the suction port body is deteriorated, the filter medium is endlessly rotated to remove the undegraded portion of the filter medium. Face the opening of the suction port body.
[0028]
The invention according to claim 8 is configured such that when the neutralizing ability of the sheet-like filter medium in which the exhaust gas is neutralized at the opening of the suction opening body is deteriorated, the filter medium is wound from one roll to the other roll. Then, the undegraded portion of the filter medium unwound from the roll on one side is exposed to the opening of the suction opening body.
[0029]
According to the invention described in claim 9, when the sheet-like filter medium is endlessly rotated or unwound from one roll and wound on the other roll, the sponge roller in contact with the filter medium rotates while the suction port is in contact with the filter medium. The neutralizing solution in the tank is transferred to the filter medium supplied to the opening of the body.
[0030]
According to the tenth aspect of the present invention, the neutralizing solution in the tank is transferred to the filter medium by moving the tank along the sheet-like filter medium and rotating the sponge roller in contact with the filter medium.
[0031]
According to an eleventh aspect of the present invention, the sheet-like filter medium is washed from the suction port body by the washing unit on the filter medium recovery side, and the filter medium is rotated or wound.
[0032]
According to the twelfth aspect of the present invention, the deterioration of the neutralization ability is detected by detecting the alkalinity of the filter medium by the alkalinity detecting means, and the exchange, recirculation or winding of the filter medium is performed.
[0033]
【Example】
Hereinafter, the present invention will be described in detail with reference to each embodiment shown in each of FIGS. 1 to 6.
[0034]
FIG. 1 shows a first embodiment according to the present invention. The tube 12 is inserted into the pressurized tank 11 containing the flux F, a spray nozzle 13 is provided at the end of the tube 12, pressure is applied to the flux surface in the pressurized tank 11, and the flux F is fed to the nozzle 13. A spray fluxer is provided for spraying and applying the flux f sprayed from the nozzle 13 to a board W to be soldered such as an electronic component mounting board.
[0035]
On the other hand, the suction port body 14 is arranged at a position facing the spray nozzle 13. A blower 16 is provided in a piping system from the suction port body 14 to the exhaust duct 15 together with an exhaust gas processing device described below, and the flux not applied to the plate W to be soldered is sucked by the suction force of the blower 16. It is forcibly sucked from the body 14.
[0036]
A dry filter 17 that functions as a primary filter of the exhaust gas treatment device is provided on the entire lower surface opening of the suction port body 14. In addition, a wet filter (wet filter) 19 that functions as a secondary filter of the exhaust gas treatment device is provided in an exhaust pipe 18 of the exhaust gas connected to the suction port body 14.
[0037]
The wet filter 19 has a porous sponge or fiber having a coarse opening so as to interpose a filter body 21 in an exhaust pipe 18 and separate an upper exhaust outlet 22 and a lower exhaust outlet 23 of the filter body 21. A filter medium 24 formed in a mat shape by, for example, is mounted diagonally in the filter body 21, and a neutralizing liquid supply tank 25 is provided as a neutralizing liquid supply section on the upper part of the filter medium 24, and is provided via a valve 26. The neutralizing solution supply pipe 27 is connected.
[0038]
The neutralizing liquid supply tank 25 contains a liquid neutralizing agent for neutralizing exhaust gas (hereinafter, referred to as neutralizing liquid L), and controls the opening degree of the valve 26 by restricting or opening and closing the valve. The neutralizing liquid L is dropped and impregnated into the filter medium 24 through the humor supply pipe 27 in a constant amount. Thereby, the filter medium 24 is used as a wet filter..
[0039]
PreviousA litmus test paper 28 is provided as a part of the filter medium 24 as an alkalinity detecting means for detecting the alkalinity of the filter medium 24 and detecting deterioration of the neutralization ability. The filter main body 21 is provided with a monitoring window 29 for visually observing the litmus test paper 28.
[0040]
In the first embodiment shown in FIG. 1, the flux f sprayed from the spray nozzle 13 is sprayed and applied to the plate W to be soldered, and the flux not applied to the plate W to be soldered is sprayed. Forcible suction is performed by the suction force of the blower 16 from the suction port body 14 opposed to 13.
[0041]
At this time, after the flux particles are captured and removed by the dry filter 17 at the lower surface opening of the suction port body 14, the exhaust gas is neutralized by the next wet filter 19.
[0042]
That is, the exhaust gas sucked from the suction port body 14 was introduced into the filter main body 21 through the exhaust pipe 18, and when the filter medium 24 was permeated, the exhaust gas was supplied from the neutralizing liquid supply tank 25 to the filter medium 24 for impregnation. By neutralizing the exhaust gas with the neutralizing liquid L, alkaline amine, ammonia, and the like are removed from the exhaust gas released to the atmosphere.
[0043]
When the neutralization processing capacity of the wet filter 19 reaches the limit, the litmus test paper 28 turns blue, thereby detecting that the filter medium 24 cannot neutralize the alkalinity, that is, displaying and detecting deterioration of the neutralization ability, and detecting the filter medium 24. Exchange.
[0044]
Next, FIG. 2 shows a second embodiment according to the present invention. The same parts as those in the first embodiment of FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.
[0045]
The structure of the second embodiment different from that of the first embodiment will be described. The filter main body 21 of the shower type filter 19a is interposed in the exhaust pipe 18 of the exhaust gas. Are formed, and a plurality of shower rooms 32 are formed. An exhaust inlet 22 is provided on one side of the filter body 21, and an exhaust outlet 23 is provided on the other side.
[0046]
A shower nozzle 33 is provided above each shower room 32, and a neutralizing solution supply system for supplying a neutralizing solution L for exhaust gas neutralization is provided in each shower nozzle 33.
[0047]
This neutralizing solution supply system connects a suction side of a circulation pump 38 via a filter 37 to a neutralizing solution circulating pipe 36 drawn from a neutralizing solution reservoir 35 formed at the bottom of the filter body 21. The discharge side of the pump 38 is connected to the shower nozzle 33.
[0048]
A mist filter 39 is provided in the exhaust pipe line 18 between the filter main body 21 and the blower 16 to remove mist particles mixed in the exhaust gas in the shower room 32 so as not to be sucked into the blower 16. .
[0049]
The litmus test paper 28 as the alkalinity detecting means is provided in a portion of the filter main body 21 which comes into contact with the neutralizing solution L.
[0050]
In the second embodiment shown in FIG. 2, the exhaust gas sucked from the suction port body 14 is sequentially led to each shower room 32 from the exhaust inlet 22 of the filter body 21 through the exhaust pipe 18, and the upper shower The exhaust gas is neutralized by bringing the nozzle 33 into contact with the neutralizing liquid L sprayed or sprayed on the entire area of each shower room 32, thereby removing alkaline amines and the like from the exhaust gas.
[0051]
Since the exhaust gas thus treated in each shower room 32 contains mist particles, the mist particles are removed by the mist filter 39 and then sucked into the blower 16.
[0052]
Next, FIG. 3 shows a third embodiment according to the present invention. The same parts as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof is omitted.
[0053]
The third embodiment is a composite wet filter (wet filter) 19b of the first and second embodiments. An exhaust inlet 22 for introducing exhaust gas is connected to the upper part of the filter body 21, and a shower nozzle 33 is provided. In addition, the shower room 32 is formed as a single unit without dividing into a plurality, and the filter medium 24 is provided obliquely at a relatively lower portion of the shower room 32. The exhaust outlet 23 is provided below the filter medium 24 and above a neutralized liquid reservoir 35 formed at the bottom of the filter body 21.
[0054]
In the third embodiment shown in FIG. 3, the exhaust gas sucked from the suction port body 14 is guided to the shower room 32 of the filter main body 21 through the exhaust pipe 18, and the shower room 32 The exhaust gas is brought into contact with the neutralizing liquid L sprayed or sprayed on the entire area of the above to perform a neutralization treatment.
[0055]
Further, since the neutralizing solution spouted from the shower nozzle 33 is impregnated in the filter medium 24, the exhaust gas neutralized in the shower chamber 32 is also superimposed and neutralized when passing through the filter medium 24, and exhausted. Alkaline amine and the like in the gas are reliably removed.
[0056]
Next, FIG. 4 shows a fourth embodiment according to the present invention. Also in the fourth embodiment, the flux f sprayed from the spray nozzle 13 is sprayed and applied to the board W to be soldered, and the flux not applied to the board W to be soldered is sprayed with the suction port 14 facing the spray nozzle 13. It is the same as each of the embodiments shown in FIGS. 1 to 3 in that a spray fluxer for forcibly sucking and exhausting is presupposed.
[0057]
A characteristic structure of this embodiment is that the sheet-shaped primary filter provided at the opening on the lower surface of the suction opening 14 is a wet filter (wet filter).
[0058]
In this wet filter, a sheet-like filter medium 24a formed endlessly from paper, woven cloth, or the like is wound around a roller 41 disposed around the suction opening 14, and one of the rollers 41a is driven to rotate. Accordingly, the roll filter can be moved endlessly through an opening on the lower surface of the suction opening body 14.
[0059]
A neutralizing solution supply unit 42 for supplying and impregnating the neutralizing solution for neutralizing the exhaust gas to the filter medium 24a is provided. The neutralizing liquid supply section 42 is provided with a tank 43 containing the neutralizing liquid L on the filter medium supply side from the suction port 14, and rotatably supports a sponge roller 44 in the tank 43. 44 is brought into contact with the sheet-like filter medium 24a.
[0060]
On the other hand, a washing section 51 for washing the sheet-like filter medium 24a is provided on the filter medium recovery side from the suction port body 14. The cleaning unit 51 is provided with a cleaning liquid injection nozzle 52 communicating with a cleaning liquid pressurized supply source (not shown) facing the filter medium 24a, and a recovery port 54 of a cleaning liquid recovery pipe 53 is provided at a position facing the cleaning liquid injection nozzle 52. The cleaning liquid suction blower 56 is connected to the cleaning liquid collection pipe 53 via the filter 55 through the opening, and the cleaning liquid such as the solvent sprayed from the cleaning liquid injection nozzle 52 onto the filter medium 24a is forcibly forced by the suction force of the blower 56 from the recovery port 54. It is designed to collect by suction.
[0061]
In addition, if the litmus test paper 28 as the alkalinity detecting means is woven into a predetermined portion of the filter medium 24a, it is easy to determine the deterioration of the neutralizing ability of the filter medium 24a.
[0062]
In the fourth embodiment shown in FIG. 4, the flux f sprayed from the spray nozzle 13 is sprayed onto the plate W to be soldered, and the flux not applied to the plate W to be soldered is sprayed. The liquid is sucked into the lower surface opening of the suction port body 14 through the filter medium 24a impregnated with the neutralizing liquid facing the nozzle 13.
[0063]
When the filter medium 24a is impregnated with the neutralizing liquid L, the sponge roller 44 in contact with the filter medium 24a rotates when the sheet-like filter medium 24a is endlessly rotated and fed into the lower surface opening of the suction opening body 14. The neutralizing solution L in the tank 43 contained in the sponge roller 44 is transferred to the filter medium 24a to form a wet filter.
[0064]
In this way, the filter medium 24a impregnated with the neutralizing liquid L supplied from the neutralizing liquid tank 43 via the sponge roller 44 is located at the lower surface opening of the suction port body 14, and passes through the filter medium 24a to the suction port body 14. Since the exhaust gas is sucked, the exhaust gas can be neutralized with the neutralizing liquid L in the filter medium 24a to remove alkaline amines and the like from the exhaust gas.
[0065]
When it is confirmed by the change of the litmus test paper 28 integrated with the filter medium 24a to blue that the neutralizing ability of the filter medium 24a has deteriorated, the filter medium 24a is rotated endlessly to remove the undegraded portion of the filter medium 24a into the suction port body 14. Face the bottom opening.
[0066]
When the used filter medium 24a is sent out from the lower surface opening of the suction port body 14, the used portion of the filter medium 24a is washed by the washing unit 51 on the filter medium recovery side to remove the alkaline deposits on the filter medium 24a. The neutralizing ability is restored, and the filter medium 24a is prepared for recycle use by circulation.
[0067]
Next, FIG. 5 shows a fifth embodiment according to the present invention. The same parts as those in the fourth embodiment shown in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted.
[0068]
The fifth embodiment is different from the fourth embodiment in that a sheet-like filter medium 24a drawn out from a roll 61 disposed on one side of the suction port body 14 is passed through the lower surface opening of the suction port body 14 and is then passed through the suction port body. In this configuration, the roll is wound around a roll 62 arranged on the other side of the 14.
[0069]
In the embodiment shown in FIG. 5, when the neutralizing ability of the sheet-like filter medium 24a in which the exhaust gas is neutralized is deteriorated at the lower opening of the suction port body 14, the filter medium 24a is rolled on one side. From the roll 61 on the other side, it is wound on a roll 62, and the undegraded portion of the filter medium 24a fed from the roll 61 on one side is exposed to the lower surface opening of the suction opening 14.
[0070]
When the sheet-like filter medium 24a is wound up, the neutralizing liquid L in the tank 43 contained in the sponge roller 44 is supplied to the lower opening of the suction port body 14 while the sponge roller 44 in contact with the filter medium 24a rotates. It is transferred to the filter medium 24a to be used, and a wet filter is obtained.
[0071]
The used filter medium 24a, all of which has been wound up by the roll 62 on the winding side, may be disposable, but may be removed and washed, or washed at the time of winding by the washing unit 51 shown in FIG. Therefore, it is desirable to use it for recycling.
[0072]
Next, FIG. 6 shows a sixth embodiment according to the present invention. The same parts as in the fifth embodiment of FIG. 5 are denoted by the same reference numerals, and the description thereof will be omitted.
[0073]
The sixth embodiment differs from the fifth embodiment in that the tank 43 is provided so as to be able to move up and down and move along the sheet-like filter medium 24a. As the tank 43 rises, the sponge roller 44 pivotally supported in the tank 43 comes into contact with the filter medium 24a, and the sponge roller 44 rotates by moving along the filter medium 24a.
[0074]
In the sixth embodiment shown in FIG. 6, when the filter medium 24a is wound, the tank 43 is lowered, and after the filter medium 24a is wound by a predetermined amount, the tank 43 is raised to move the sponge roller 44. The neutralizing liquid L in the tank 43 is transferred to the filter medium 24a while rotating the sponge roller 44 in contact with the filter medium 24a by pressing the filter 43 against the filter medium 24a and moving the tank 43 forward along the filter medium 24a. Before returning the tank 43 to the original position, the tank 43 is lowered.
[0075]
Further, since the used filter medium 24a may be adhered or fixed to a structural member such as the suction port body 14 or a filter guide, the tank 43 may be reciprocated as described above before being wound around the roll 62. If the neutralizing solution L is applied to the filter medium 24a as a dissolving solution for dissolving the sticky substance or the adhered substance of the used filter, and the filter medium 24a is blurred, the winding of the filter medium 24a can be performed smoothly.
[0076]
When the tank 43 and the sponge roller 44 are used for such a purpose, if a flux or a solvent is put in the tank 43, the sticky substance or the fixed substance can be effectively dissolved.
[0077]
In the embodiment shown in FIGS. 4 to 6, the neutralizing liquid supply unit 42 is constituted by the neutralizing liquid tank 43 and the sponge roller 44, but a fixed position or movable nozzle (not shown) The neutralizing liquid supply unit may be configured to spray the neutralizing liquid onto the filter medium 24a.
[0078]
Further, throughout all the embodiments, the suction port body 14 is provided at a position facing the spray nozzle 13, but the suction port body for sucking the flux reflected on the plate W to be soldered is similar to the spray nozzle 13. When it is arranged below the conveyor of the plate W to be soldered, the present invention may be applied to this lower suction port.
[0079]
【The invention's effect】
According to the first aspect of the present invention, when the flux not applied to the soldering plate is forcibly sucked from the suction port body and exhausted, the exhaust gas is neutralized by the neutralizing agent. By neutralizing or reducing the alkalinity, alkaline amines that cause air pollution and odor can be removed from the exhaust gas emitted to the atmosphere, thereby contributing to environmental conservation and preventing corrosion of the exhaust duct and the like.
[0080]
According to the second aspect of the present invention, the exhaust gas is neutralized by a simple and inexpensive facility comprising a filter body, a filter medium, and a neutralizing liquid supply unit, and the exhaust gas is converted into an atmosphere from the exhaust gas. Alkaline amines that cause contamination and odor can be removed.
[0081]
According to the third aspect of the present invention, the exhaust gas can be efficiently neutralized by the fresh neutralizing solution sprayed or sprayed from the shower nozzle in the shower room.
[0082]
According to the fourth aspect of the present invention, the exhaust gas is neutralized with a neutralizing solution sprayed or sprayed from a shower nozzle, and then a different kind of filter medium is impregnated with the neutralizing solution. Since the neutralization treatment is performed by the method described above, the neutralized solution can be effectively used, and the reliability of removing the alkaline amine and the like in the effective exhaust gas can be improved.
[0083]
According to the invention as set forth in claim 5, after the flux particles are captured and removed in advance by the dry filter at the opening of the suction port body, the exhaust gas neutralization treatment with the neutralizing solution can be performed. Neutralization can be performed efficiently.
[0084]
According to the invention described in claim 6, since the exhaust gas is sucked into the suction opening through the filter medium impregnated with the neutralizing liquid supplied from the neutralizing liquid supply unit, the exhaust gas is removed by the neutralizing liquid in the filter medium. By neutralizing, it is possible to remove alkaline amines that cause air pollution and odor from the exhaust gas, and to impregnate the filter medium provided at the opening of the suction port body with the neutralizing solution. A simple exhaust gas processing device can be achieved as compared with a device in which a filter main body is interposed in an exhaust pipe.
[0085]
According to the invention as set forth in claim 7, when the neutralizing ability of the sheet-shaped filter medium having been subjected to the neutralization treatment of the exhaust gas at the opening of the suction port body is deteriorated, the filter medium is endlessly circulated so that the filter medium is unremoved. Since the deteriorated portion faces the opening of the suction port body, the time required for replacing the filter medium can be saved.
[0086]
According to the invention described in claim 8, when the neutralizing ability of the sheet-shaped filter medium is deteriorated, the filter medium is unwound from one roll only by winding the filter medium from one roll to the other roll. Since the undegraded portion of the filter medium can be exposed to the opening of the suction port body, the time required for replacing the filter medium can be saved, and there is an advantage that the filter medium can be mounted more compactly than when the filter medium is run endlessly. .
[0087]
According to the ninth aspect of the present invention, when the sheet-shaped filter medium is endlessly rotated or unwound from one roll and wound up on the other roll, suction is performed by rotation of the sponge roller in contact with the filter medium. The neutralizing solution in the tank can be transferred to the filter medium supplied to the opening of the mouth, and the structure can be simplified because it is not necessary to provide a power source for the sponge roller.
[0088]
According to the invention described in claim 10, since the tank is moved along the sheet-like filter medium, the neutralizing solution can be transferred to the filter medium by the sponge roller in the tank before use of the filter medium, and after use, The neutralizing solution in the tank can also be transferred to the filter medium as a dissolving solution for dissolving the flux component adhered or adhered to the filter medium, and even if the filter medium adheres or adheres to a structural member such as the suction port body due to the flux component, By dissolving the components, circulation and winding of the filter medium can be easily performed.
[0089]
According to the eleventh aspect of the present invention, since the sheet-like filter medium is washed by the washing section on the filter medium recovery side from the suction port body and then circulated or wound, the filter medium can be reused. Yes and economical.
[0090]
According to the invention as set forth in claim 12, since the deterioration of the neutralization ability can be detected by detecting the alkalinity of the filter medium by the alkalinity detecting means, replacement of the filter medium, circulation or winding at an appropriate time is performed. It can be carried out.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a first embodiment of a method and an apparatus for treating exhaust gas of a spray fluxer according to the present invention.
FIG. 2 is a sectional view showing a second embodiment of the method and apparatus for treating exhaust gas of a spray fluxer according to the present invention.
FIG. 3 is a sectional view showing a third embodiment of a method and an apparatus for treating exhaust gas of a spray fluxer according to the present invention.
FIG. 4 is a sectional view showing a fourth embodiment of the method and apparatus for treating exhaust gas of a spray fluxer according to the present invention.
FIG. 5 is a sectional view showing a fifth embodiment of the method and the apparatus for treating exhaust gas of a spray fluxer according to the present invention.
FIG. 6 is a sectional view showing a sixth embodiment of the method and apparatus for treating exhaust gas of a spray fluxer according to the present invention.
[Explanation of symbols]
W Plate to be soldered
f flux
L Neutralizing solution
13 Spray nozzle
14 Suction port
17 Dry filter
18 Exhaust line
21 Filter body
22 Exhaust inlet
23 Exhaust outlet
24, 24a Filter media
25 Neutralizing solution supply tank as neutralizing solution supply section
28 Litmus test paper as a means of detecting alkalinity
32 shower stalls
33 shower nozzle
42 Neutralizing solution supply section
43 tank
44 Sponge roller
51 Cleaning section
61, 62 rolls

Claims (12)

Spray fluxer that sprays the flux sprayed from the spray nozzle onto the board to be soldered and forcibly sucks the flux not applied to the board to be soldered from the suction port to exhaust air.
A method for treating exhaust gas of a spray fluxer, comprising neutralizing exhaust gas with a neutralizing agent. Spray fluxer that sprays the flux sprayed from the spray nozzle onto the board to be soldered and forcibly sucks the flux not applied to the board to be soldered from the suction port to exhaust air.
A filter body interposed in an exhaust pipe of exhaust gas;
A filter medium mounted in the filter body,
A neutralizing solution supply unit for supplying and impregnating the filter medium with a neutralizing solution for exhaust gas neutralization. Spray fluxer that sprays the flux sprayed from the spray nozzle onto the board to be soldered and forcibly sucks the flux not applied to the board to be soldered from the suction port to exhaust air.
A filter body interposed in an exhaust pipe of exhaust gas;
A shower room formed in the filter body,
A shower nozzle provided at the top of the shower room,
A neutralizing solution supply system for supplying a neutralizing solution for exhaust gas neutralization to the shower nozzle,
An exhaust gas treatment apparatus for a spray fluxer, comprising: an exhaust gas inlet and an outlet provided in a filter body via the shower room. Spray fluxer that sprays the flux sprayed from the spray nozzle onto the board to be soldered and forcibly sucks the flux not applied to the board to be soldered from the suction port to exhaust air.
A filter body interposed in an exhaust pipe of exhaust gas;
A shower room formed in the filter body,
A shower nozzle provided at an upper portion where exhaust gas is introduced in the shower room,
A neutralizing solution supply system for supplying a neutralizing solution for exhaust gas neutralization to the shower nozzle,
A filter medium provided below the shower nozzle and upstream of an exhaust gas outlet. The exhaust gas treatment device for a spray fluxer according to any one of claims 2 to 4, wherein a dry filter is provided at an opening of the suction port body. Spray fluxer that sprays the flux sprayed from the spray nozzle onto the board to be soldered and forcibly sucks the flux not applied to the board to be soldered from the suction port to exhaust air.
A filter medium provided at the opening of the suction port body,
A neutralizing solution supply unit for supplying and impregnating the filter medium with a neutralizing solution for exhaust gas neutralization. The exhaust gas treatment device for a spray fluxer according to claim 6, wherein a sheet-like filter medium is provided so as to be able to endlessly rotate through an opening of the suction port body. 7. The sheet-like filter medium fed from a roll disposed on one side of the suction port body is wound around a roll disposed on the other side of the suction port body through an opening of the suction port body. Exhaust gas treatment equipment for spray fluxers. The neutralizing liquid supply section comprises a tank for storing the neutralizing liquid provided on the filter medium supply side from the suction port body, and a sponge roller rotatably provided in the tank and in contact with the sheet-like filter medium. Item 10. An exhaust gas treatment device for a spray fluxer according to any one of Items 6 to 8. The exhaust gas treatment apparatus for a spray fluxer according to claim 9, wherein the tank is provided so as to be movable along the sheet-like filter medium. The exhaust gas treatment device for a spray fluxer according to any one of claims 6 to 10, further comprising a washing unit for washing the sheet-like filter medium on the filter medium recovery side from the suction port body. The exhaust gas treatment apparatus for a spray fluxer according to any one of claims 2 to 11, further comprising an alkalinity detecting means for detecting the alkalinity of the filter medium and detecting deterioration of the neutralization ability of the filter medium.

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