JPH08215534A - Waste gas treatment of spray fluxer and device therefor - Google Patents

Abstract

PURPOSE: To prevent air pollution due to releasing alkaline amine or the like in the air when flux using water as solvent is used in a spray fluxer. CONSTITUTION: Flux 'f' sprayed from a spray nozzle 13 is applied to a plate to be plated W to perform spray coating. The flux which has not been applied to the plate to be plated is forcibly sucked and discharged from a suction port body 14 opposite to the spray nozzle 13 by a blower 16. In a discharge line 18 thereof, a filter body 21 is interposed and in the filter body 21, a filter medium 24 is obliquely fitted. A neutralizing liquid feed tank 25 is installed to the upper part of the filter medium 24 and is connected with a neutralizing feed pipe 27 through a valve 26 to feed a neutralizing liquid L to the filter medium 24, which is impregnated with it. By the neutralizing liquid in the filter medium 23, waste gas is neutralized to remove alkaline amine or the like from waste gas released in the air. Litmus paper 28 is attached on the filter medium 24 to detect the deterioration of neutralizing capacity by detecting alkalinity of the filter medium 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for treating exhaust gas of a spray fluxer for applying flux to a soldering plate to be soldered by a jet solder bath or the like.

[0002]

2. Description of the Related Art Generally, a soldered plate such as a printed wiring board which is soldered by a jet solder bath or the like has a flux applied to the surface to be soldered in advance. As the flux applying device, a spray fluxer for spraying and applying the flux sprayed from a spray nozzle onto a soldering plate is used.

This spray fluxer is widely used because it is excellent in the uniformity of the flux coating amount and the controllability, but it is possible to install a device for collecting the flux not coated on the soldered plate. It is essential.

As a general recovery apparatus, for example, a suction port body is arranged at a position facing a spray nozzle, and rosin in the flux is exhausted from the suction port body by a blower into a cyclone or the like from the exhaust gas. However, the solvent in the flux is difficult to collect and is released to the atmosphere.

For example, an organic solvent such as isopropyl alcohol (hereinafter referred to as IPA) was generally used as a solvent in the flux, but from the viewpoint of environmental protection, volatile organic compounds (Volatile Organic Compounds) are released into the atmosphere. In order to suppress the above, it is necessary to avoid using the organic solvent such as IPA as a solvent.

On the other hand, as a flux that does not use an organic solvent such as IPA as a solvent, a flux that uses water as a solvent is known, but this type of flux cannot be immediately put into practical use and is being put into practical use. Above all, it is necessary to pay particular attention to the exhaust.

[0007]

That is, when a flux using water as a solvent is used in a spray flux,
The exhaust gas discharged to the atmosphere contains alkaline amine, ammonia, etc., which is not preferable in terms of air pollution or odor, and these components may corrode the exhaust duct or the like.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a method and an apparatus for treating exhaust gas of a spray flux that can prevent air pollution due to atmospheric release of alkaline amines and the like. To do.

[0009]

According to a first aspect of the present invention, a flux sprayed from a spray nozzle is spray-applied to a soldering plate, and flux not applied to the soldering plate is sucked into the suction port. It is an exhaust gas treatment method of a spray fluxer in which the exhaust gas is neutralized by a neutralizing agent in the spray fluxer which is forcibly sucked from the body and exhausted.

According to the second aspect of the present invention, the flux sprayed from the spray nozzle is spray-applied to the soldering plate, and the flux not applied to the soldering plate is forcibly sucked from the suction port body. In a spray fluxer for exhaust gas treatment, the filter body interposed in the exhaust gas exhaust pipe, the filter medium mounted in the filter body, and the neutralizing liquid for exhaust gas neutralization are supplied to the filter medium. It is an exhaust gas treatment device of a spray fluxer having a configuration including a neutralizing liquid supply unit for impregnation.

According to the third aspect of the invention, the flux sprayed from the spray nozzle is spray-applied to the soldering plate, and the flux not applied to the soldering plate is forcibly sucked from the suction port body. In a spray fluxer that performs exhaust treatment by means of a filter, a filter body interposed in the exhaust gas exhaust pipe, a shower chamber formed in the filter body, a shower nozzle provided above the shower chamber, and a shower Exhaust gas of a spray fluxer having a structure including a neutralizing liquid supply system for supplying a neutralizing liquid for exhaust gas neutralization to a nozzle, and an exhaust gas inlet and outlet provided in a filter body through the shower chamber. It is a processing device.

According to a fourth aspect of the invention, the flux sprayed from the spray nozzle is spray-applied to the soldered plate, and the flux not applied to the soldered plate is forcibly sucked from the suction port body. In a spray fluxer that performs exhaust treatment by means of a filter, the filter body interposed in the exhaust gas exhaust pipe line, the shower chamber formed in the filter body, and the upper portion of the shower chamber where the exhaust gas is introduced A shower nozzle, a neutralization liquid supply system for supplying a neutralization liquid for neutralizing exhaust gas to the shower nozzle, and a filter medium provided below the shower nozzle and upstream from an exhaust gas outlet. It is an exhaust gas treatment device of the spray flux of the configuration.

According to a fifth aspect of the present invention, in the exhaust gas treatment device for a spray fluxer according to any of the second to fourth aspects, a dry filter is provided at the opening of the suction port body. .

According to a sixth aspect of the present invention, the flux sprayed from the spray nozzle is spray-applied to the soldered plate, and the flux not applied to the soldered plate is forcibly sucked from the suction port body. In a spray fluxer for performing exhaust treatment by means of a spray, a spray comprising a filter material provided at an opening of a suction port body and a neutralizing solution supply section for supplying and impregnating a neutralizing solution for exhaust gas neutralization to the filter material. This is an exhaust gas treatment device for Fluxa.

According to a seventh 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 is provided through the opening of the suction port body so as to be capable of endless traveling. Is.

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-shaped filter medium fed from a roll arranged on one side of the suction port body is used. And is wound around a roll disposed on the other side of the suction port body through the opening.

According to a ninth aspect of the present invention, in the exhaust gas treatment device for a spray fluxer according to any of the sixth to eighth aspects, the neutralizing liquid supply section is provided on the filter medium supply side of the suction port body. Further, it is composed of a tank for containing the neutralizing solution and a sponge roller rotatably provided in the tank and in contact with a sheet-shaped filter medium.

The invention described in claim 10 is claim 9
In the exhaust gas treatment device of the described spray flux,
The tank is configured to be movable along a sheet-shaped filter medium.

The invention described in claim 11 is the same as claim 6.
In the exhaust gas treatment apparatus for a spray flux according to any one of 1 to 10, a cleaning unit for cleaning the sheet-shaped filter medium is provided on the filter medium recovery side of the suction port body.

The invention described in claim 12 is the same as claim 2.
The exhaust gas treatment apparatus for a spray flux as described in any one of 1 to 11 is provided with an alkalinity detecting means for detecting the alkalinity of the filter medium to detect deterioration of the neutralizing ability.

[0021]

According to the first aspect of the invention, the flux sprayed from the spray nozzle is spray-applied to the soldered plate, and the flux not applied to the soldered plate is forcibly sucked from the suction port body. And exhaust treatment.
At this time, the exhaust gas is neutralized with a neutralizing agent to remove alkaline amine and the like from the exhaust gas released to the atmosphere.

According to the second aspect of the present invention, the exhaust gas sucked from the suction port body is guided to the inside of the filter body through the exhaust pipe line, and when the filter medium is permeated, it is supplied to the filter medium from the neutralizing liquid supply section. Then, the exhaust gas is neutralized with the neutralizing liquid impregnated with the exhaust gas to remove the alkaline amine and the like from the exhaust gas and release it to the atmosphere.

According to the third aspect of the invention, the exhaust gas sucked from the suction port body is guided to the shower chamber through the inlet of the filter body through the exhaust pipe, and sprayed or sprayed from the upper shower nozzle over the entire shower chamber. The exhaust gas is neutralized by bringing the exhaust gas into contact with the neutralizing liquid, and alkaline amine or the like is removed from the exhaust gas and discharged from the outlet.

In the invention described in claim 4, the exhaust gas sucked from the suction port body is guided to the shower chamber of the filter body through the exhaust pipe line, and is sprayed or sprayed from the upper shower nozzle over the entire shower chamber. Neutralization treatment is performed by bringing the exhaust gas into contact with the unmixed solution, and the neutralization solution that is ejected from the shower nozzle and impregnated into the filter medium also neutralizes the exhaust gas when passing through the filter medium. Remove alkaline amines.

According to the invention described in claim 5, after the flux particles are captured and removed by the dry filter at the opening of the suction port body, the exhaust gas neutralization treatment by the neutralizing solution according to any one of claims 2 to 4 is performed. I do.

According to a sixth aspect of the present invention, the flux sprayed from the spray nozzle is spray-applied to the soldered plate, and the flux not applied to the soldered plate is forcibly sucked from the suction port body. And exhaust treatment. 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. Alkaline amine etc. are removed from the.

According to a seventh aspect of the present invention, when the neutralizing ability of the sheet-shaped filter medium neutralized with exhaust gas at the opening of the suction port body is deteriorated, the filter medium is endlessly circulated to prevent the filter medium from being unfiltered. The deteriorated part is exposed to the opening of the suction port body.

According to the invention described in claim 8, when the neutralizing ability of the sheet-shaped filter medium neutralized with exhaust gas at the opening of the suction port body is deteriorated, the filter medium is changed from one roll to the other roll. It is wound up on a roll, and the undeteriorated portion of the filter medium fed from one roll is exposed to the opening of the suction port body.

According to the ninth aspect of the invention, when the sheet-shaped filter medium is endlessly rotated or unrolled from one roll and wound on the other roll, the sponge roller in contact with the filter medium rotates. , The neutralizing solution in the tank is transferred to the filter medium supplied to the opening of the suction port body.

According to the tenth aspect of the invention, by moving the tank along the sheet-shaped filter medium, the sponge roller in contact with the filter medium is rotated and the neutralizing solution in the tank is transferred to the filter medium.

In the eleventh aspect of the present invention, the sheet-shaped filter medium is washed by the cleaning unit on the filter medium recovery side of the suction port, and the filter medium is wound or wound.

In the twelfth aspect of the present invention, deterioration of the neutralizing ability is detected by detecting the alkalinity of the filter medium by the alkalinity detecting means, and the filter medium is replaced, wound or wound.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the respective embodiments shown in each of FIGS.

FIG. 1 shows a first embodiment according to the present invention. The tube 12 is inserted into the pressure tank 11 containing the flux F, the spray nozzle 13 is provided at the tip of the tube 12, and the pressure tank 11 is provided.
Applying pressure to the inner flux surface, the flux F is applied to the nozzle.
A spray fluxer is provided which is pressure-fed to the nozzle 13 and sprays the flux f sprayed from the nozzle 13 onto a soldering plate W such as an electronic component mounting substrate.

On the other hand, the suction port body 14 is arranged at a position facing the spray nozzle 13. Exhaust duct from this suction port body 14
The blower 16 is provided in the piping system up to 15 together with the exhaust gas treatment device described below, and the flux not applied to the soldering target plate W is sucked by the suction force of the blower 16.
Forcibly inhale from 14.

A dry filter 17 functioning as a primary filter of the exhaust gas treatment device is provided on the entire lower surface opening of the suction port body 14. Further, a wet filter (wet filter) 19 that functions as a secondary filter of the exhaust gas processing apparatus is provided in the exhaust gas exhaust pipe line 18 connected to the suction port body 14.

The wet filter 19 has a porous body having a coarse mesh so that a filter main body 21 is interposed in an exhaust pipe 18 and an upper exhaust inlet 22 and a lower exhaust outlet 23 of the filter main body 21 are partitioned from each other. A filter medium 24 formed in a matt shape with sponge or fibers is obliquely mounted in the filter body 21, a neutralizing solution supply tank 25 as a neutralizing solution supply unit is provided above the filter medium 24, and a valve 26 is provided. Neutralization liquid supply pipe via
Connect 27.

The neutralizing liquid supply tank 25 contains a liquid neutralizing agent for neutralizing exhaust gas (hereinafter referred to as neutralizing liquid L), and the opening degree of the valve 26 is controlled to be throttled or opened / closed. As a result, the neutralizing solution L is aliquoted and impregnated into the filter medium 24 through the neutralizing solution supply pipe 27. As a result, the filter medium 24 is used as a wet filter.

The neutralization liquid L is, for example, an aqueous solution containing sodium carbonate, that is, sodium carbonate (Na ₂ CO ₃ ) in an amount of about 0.5 to 1%, or an aqueous solution containing sodium hydroxide (NaOH) in an amount of about 0.5 to 1%. Are preferred.

A litmus test paper 28 as an alkalinity detecting means for detecting the alkalinity of the filter medium 24 to detect the deterioration of the neutralizing ability is provided on a part of the filter medium 24. Filter body 21
There is a monitoring window for visually observing this litmus test paper 28.
29 will be provided.

In the first embodiment shown in FIG. 1, the flux f sprayed from the spray nozzle 13 is spray-applied to the soldering plate W and is not applied to the soldering plate W. Spray nozzle 13
It is forcibly sucked by the suction force of the blower 16 from the suction port body 14 facing the.

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 neutralization process is performed by the next wet filter 19.

That is, when the exhaust gas sucked from the suction port body 14 is introduced into the filter main body 21 through the exhaust pipe line 18 and the filter medium 24 is passed therethrough, the filter medium 24 is supplied from the neutralizing solution supply tank 25.
By neutralizing the exhaust gas with the neutralization liquid L supplied and impregnated with the alkaline amine, alkaline amine, ammonia and the like are removed from the exhaust gas discharged to the atmosphere.

When the neutralization processing capacity of the wet filter 19 reaches the limit, the litmus test paper 28 turns blue, so that it is detected that the filter medium 24 cannot neutralize alkalinity.
That is, the deterioration of the neutralizing ability is detected and detected, and the filter medium 24 is replaced.

Next, FIG. 2 shows a second embodiment according to the present invention. The same parts as those in the first embodiment shown in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted.

The structure of the second embodiment different from that of the first embodiment will be described. A filter body 21 of a shower type filter 19a is interposed in an exhaust gas exhaust line 18, and a partition plate 31 is provided in the filter body 21. Form a plurality of shower chambers 32 whose upper part is partitioned by. 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.

A shower nozzle 33 is provided above each shower room 32.
And a neutralizing liquid supply system for supplying the neutralizing liquid L for neutralizing the exhaust gas to each of the shower nozzles 33.

This neutralizing liquid supply system is provided with a neutralizing liquid circulating pipe 36 drawn from a neutralizing liquid reservoir 35 formed at the bottom of the filter body 21 through a filter 37 and a suction side of a circulation pump 38. The discharge side of this pump 38 is connected to the shower nozzle 33.
Connected to.

A mist filter 39 is provided in the exhaust pipe line 18 between the filter body 21 and the blower 16, and the mist filter 39 is provided.
At 32, remove the mist particles mixed in the exhaust gas and blow
I try not to be sucked into 16.

The litmus test paper 28 as the alkalinity detecting means is provided in the portion of the filter body 21 that comes into contact with the neutralizing liquid L.

In the second embodiment shown in FIG. 2, the exhaust gas sucked from the suction port body 14 is sequentially guided to each shower chamber 32 from the exhaust inlet 22 of the filter body 21 through the exhaust pipe 18. The exhaust gas is neutralized by contacting the neutralizing liquid L sprayed or sprayed over the entire shower chamber 32 from the upper shower nozzle 33 to remove alkaline amine and the like from the exhaust gas.

Since the exhaust gas treated in each of the shower chambers 32 contains mist particles, the mist particles are removed by the mist filter 39 and then sucked into the blower 16.

Next, FIG. 3 shows a third embodiment according to the present invention. The same parts as those in the first and second embodiments are designated by the same reference numerals, and the description thereof will be omitted.

This third embodiment is a composite type wet filter (wet filter) 19b of the first and second embodiments.
It is provided with a shower nozzle 33 while connecting the exhaust inlet 22 for introducing exhaust gas to the upper part of the filter body 21,
Further, the shower chamber 32 is formed as a single unit without being divided into a plurality of units, and the filter medium 24 is obliquely provided at a relatively lower portion of the shower chamber 32.
The exhaust outlet 23 is provided below the filter medium 24 and above the neutralizing solution reservoir 35 formed at the bottom of the filter body 21.

In the third embodiment shown in FIG. 3, the exhaust gas sucked from the suction port body 14 is guided to the shower chamber 32 of the filter body 21 through the exhaust pipe 18, and the upper shower nozzle 33 The exhaust gas is brought into contact with the neutralizing liquid L sprayed or sprayed over the entire area of the shower room 32 for neutralization.

Further, since the filter medium 24 is impregnated with the neutralizing liquid ejected from the shower nozzle 33, when the exhaust gas neutralized in the shower chamber 32 passes through the filter medium 24, the neutralizing process is repeated. Thus, the alkaline amine and the like in the exhaust gas are surely removed.

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 spray-applied to the soldering target plate W, and the flux not applied to the soldering target plate W is applied to the suction nozzle 14 facing the spray nozzle 13. It is the same as each of the embodiments shown in FIGS. 1 to 3 in that it is premised on a spray fluxer for forcibly suctioning and exhausting.

The characteristic structure of this embodiment is that the suction port body 14
The point is that the sheet-shaped primary filter provided in the lower surface opening is a wet filter.

In this wet filter, an endless sheet-like filter material 24a made of paper, woven cloth, or the like is wound around a roller 41 arranged around the suction port body 14, and one of the rollers is used.
This is a roll filter that can be endlessly rotated through the lower surface opening of the suction port body 14 by rotationally driving 41a.

A neutralizing liquid supply section 42 for supplying and impregnating the neutralizing liquid for exhaust gas neutralization to the filter medium 24a is provided. The neutralizing solution supply unit 42 has a tank 43 containing the neutralizing solution L on the filter material supply side of the suction port body 14, and a sponge roller 44 is rotatably supported by the tank 43. The sheet 44 is brought into contact with the sheet-shaped filter medium 24a.

On the other hand, a cleaning section 51 for cleaning the sheet-shaped filter medium 24a is provided on the filter medium recovery side of the suction port body 14. This cleaning unit
51 is provided with a cleaning liquid injection nozzle 52 communicating with a cleaning liquid pressure supply source (not shown) facing the filter medium 24a, and opening a recovery port 54 of the cleaning liquid recovery conduit 53 at a position facing the cleaning liquid injection nozzle 52, A cleaning liquid suction blower 56 is connected to the cleaning liquid recovery conduit 53 via a filter 55 to collect a cleaning liquid such as a solvent sprayed from the cleaning liquid injection nozzle 52 on the filter medium 24a with a recovery port 54.
Further, the suction force of the blower 56 is forcibly sucked and collected.

Further, if the litmus test paper 28 as the alkalinity detecting means is woven in a predetermined portion of the filter medium 24a, it is easy to judge the deterioration of the neutralizing ability of the filter medium 24a.

In the fourth embodiment shown in FIG. 4, the flux f sprayed from the spray nozzle 13 is spray-applied to the soldering plate W and the flux not applied to the soldering plate W is applied. The spray nozzle
Suction port body through filter medium 24a impregnated with the neutralizing solution facing 13
Suction into the bottom opening of 14.

When the neutralizing solution L is impregnated into the filter medium 24a, the sponge roller 44 contacting the filter medium 24a rotates when the sheet-shaped filter medium 24a is endlessly rotated and sent to the lower surface opening of the suction port body 14. Then, 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.

In this way, the filter medium 24a impregnated with the neutralizing liquid L supplied from the neutralizing liquid tank 43 through the sponge roller 44 is located at the lower surface opening of the suction port body 14, and the filter medium 24a.
Since the exhaust gas is sucked into the suction port body 14 through
By neutralizing the exhaust gas with the neutralizing liquid L in a, alkaline amine and the like can be removed from the exhaust gas.

The fact that the neutralizing ability of the filter medium 24a has deteriorated
When it is confirmed that the litmus test paper 28, which is integral with 24a, changes its color to blue, the filter medium 24a is moved endlessly so that the undeteriorated portion of the filter medium 24a faces the opening on the lower surface of the suction port body 14.

When the used filter medium 24a is delivered from the lower opening of the suction port body 14, the used portion of the filter medium 24a is washed by the cleaning unit 51 on the filter medium recovery side, so that the filter medium 24a
To recover the neutralizing ability by removing the alkaline deposits and prepare for the recycling use of the filter medium 24a.

Next, FIG. 5 shows a fifth embodiment according to the present invention. The same parts as those in the fourth embodiment of FIG. 4 are designated by the same reference numerals and the description thereof will be omitted.

The fifth embodiment is different from the fourth embodiment in that the sheet-shaped filter medium 24a fed from the roll 61 arranged on one side of the suction port body 14 passes through the lower surface opening of the suction port body 14,
It is configured to be wound around a roll 62 arranged on the other side of the suction port body 14.

In the embodiment shown in FIG. 5, when the neutralizing ability of the sheet-shaped filter medium 24a that neutralizes exhaust gas at the lower surface opening of the suction port body 14 deteriorates, the filter medium 24a is removed. The undeteriorated portion of the filter medium 24a wound up from the roll 61 on one side to the roll 62 on the other side and fed out from the roll 61 on one side is sucked into the suction port body 14
Face the bottom opening of.

When the sheet-shaped filter medium 24a is wound up,
While the sponge roller 44 in contact with 24a rotates, the neutralizing liquid L contained in the sponge roller 44 in the tank 43 is transferred to the filter medium 24a supplied to the lower surface opening of the suction port body 14 to form a wet filter. .

The used filter medium 24a, which is entirely wound around the roll 62 on the winding side, may be disposable, but it may be removed and washed, or when it is wound by the washing section 51 shown in FIG. It is desirable to reuse by washing.

Next, FIG. 6 shows a sixth embodiment according to the present invention. The same parts as those in the fifth embodiment of FIG. 5 are designated by the same reference numerals and the description thereof will be omitted.

The structure of the sixth embodiment different from the fifth embodiment is that the tank 43 is provided so as to be vertically movable and movable along the sheet-shaped filter medium 24a. As the tank 43 rises, the sponge roller 44 axially supported in the tank 43 comes into contact with the filter medium 24a, and the sponge roller 44 rotates as it moves along the filter medium 24a.

In the sixth embodiment shown in FIG. 6, the tank 43 is lowered when the filter medium 24a is wound up,
After winding a certain amount of the filter material 24a, the tank 43 is raised and the sponge roller 44 is pressed against the filter material 24a, and
The neutralizing liquid L in the tank 43 is transferred to the filter medium 24a while rotating the sponge roller 44 which comes into contact with the filter medium 24a by moving along the path a. Before returning the tank 43 to the original position, the tank 43 is lowered.

Further, the used filter medium 24a is a suction port body.
Since it may stick or adhere to structural members such as 14 or filter guides, the tank 43 is reciprocated as described above before being wound on the roll 62 to dissolve the adhered or adhered material of the used filter. Neutralization liquid L as a dissolving liquid
When the filter material 24a is applied and allowed to spread, the filter material 24a can be smoothly wound.

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, an adhesive substance or a fixed substance can be effectively dissolved.

The embodiment shown in FIGS. 4 to 6 is
The neutralizing solution supply unit 42 is connected to the neutralizing solution tank 43 and the sponge roller 44.
However, it may be a neutralizing solution supply unit in which the neutralizing solution is sprayed onto the filter medium 24a from a fixed position or movable nozzle (not shown).

Further, although the suction port body 14 is installed at the position facing the spray nozzle 13 throughout all the examples, the suction port body which sucks the flux reflected by hitting the soldered plate W is used as the spray nozzle 13. Soldered plate W as in
When it is arranged on the lower side of the conveyor, the present invention may be applied to the lower suction port body.

[0080]

According to the invention described in claim 1, when the flux not applied to the soldered plate is forcibly sucked from the suction port body and exhausted, exhaust gas is neutralized by the neutralizing agent. By neutralizing or neutralizing or lowering the alkalinity, it is possible to remove alkaline amines that cause air pollution and odors from the exhaust gas released to the atmosphere, contributing to environmental protection and exhaust ducts etc. Can prevent corrosion.

According to the second aspect of the present invention, the exhaust gas is neutralized by the inexpensive equipment having a simple structure, which is composed of the filter body, the filter medium, and the neutralizing liquid supply section. Alkaline amines that cause air pollution and odor can be removed from the inside.

According to the invention described in claim 3, the exhaust gas can be efficiently neutralized by the fresh neutralizing liquid sprayed or sprayed from the shower nozzle in the shower room.

According to the invention described in claim 4, the exhaust gas is neutralized by the neutralizing solution sprayed or sprayed from the shower nozzle, and then the filter medium impregnated with the neutralizing solution is used. Since the neutralization treatment is carried out by a different method, the neutralization liquid can be effectively used and the certainty in removing the alkaline amine and the like in the effective exhaust gas can be improved.

According to the fifth aspect of the present invention, the exhaust gas neutralization treatment with the neutralizing liquid can be performed after the flux particles have been captured and removed by the dry filter at the opening of the suction port body beforehand. The exhaust gas neutralization process can be efficiently performed.

According to the sixth aspect of the invention, since the exhaust gas is sucked into the suction port through the filter medium impregnated with the neutralizing solution supplied from the neutralizing solution supply unit, the neutralizing solution in the filter medium is used. By neutralizing the exhaust gas, it is possible to remove the alkaline amine that causes air pollution and odor from the exhaust gas, and to impregnate the filter medium provided at the opening of the suction port with the neutralizing liquid. Therefore, as compared with the case where the filter main body is interposed in the exhaust pipe line, a simple exhaust gas treatment device can be obtained.

According to the invention described in claim 7, when the neutralizing ability of the sheet-shaped filter medium neutralized with exhaust gas at the opening of the suction port body is deteriorated, the filter medium is endlessly circulated. Since the undeteriorated portion of the filter medium faces the opening of the suction port body, the time required for replacing the filter medium can be saved.

According to the invention described in claim 8, when the neutralizing ability of the sheet-shaped filter medium is deteriorated, the filter medium can be wound from one roll to the other roll by simply winding the filter medium from the one roll. Since the undeteriorated part of the delivered 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 the filter medium can be mounted compactly as compared with the case where the filter medium is run endlessly. There are also advantages.

According to the invention described in claim 9, when the sheet-shaped filter medium is endlessly rotated or unrolled from one roll and wound on the other roll, the sponge roller is brought into contact with the filter medium. Thus, the neutralizing liquid in the tank can be transferred to the filter medium supplied to the opening of the suction port body, and the structure can be simplified because it is not necessary to provide the sponge roller with a power source.

According to the invention described in claim 10, since the tank is moved along the sheet-shaped filter medium, the neutralizing solution can be transferred to the filter medium by the sponge roller in the tank before the filter medium is used. After completion, the neutralizing liquid in the tank can be transferred to the filter medium as a solution that dissolves the flux component that has adhered or adhered to the filter medium, and when the filter component adheres or adheres to the structural member such as the suction port due to the flux component. However, the components can be dissolved and the filter medium can be easily wound and wound.

According to the eleventh aspect of the present invention, since the sheet-shaped filter medium is cleaned by the cleaning unit on the filter medium recovery side of the suction port body, the filter medium is circulated or wound up, so that the filter medium can be reused. Is possible and economical.

According to the twelfth aspect of the present invention, the deterioration of the neutralizing ability can be detected by detecting the alkalinity of the filter medium by the alkalinity detecting means. Therefore, the filter medium can be replaced, wound or wound at an appropriate time. You can do things such as picking.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of an exhaust gas treatment method for a spray fluxer and an apparatus therefor according to the present invention.

FIG. 2 is a sectional view showing a second embodiment of an exhaust gas treatment method for a spray fluxer and an apparatus therefor according to the present invention.

FIG. 3 is a sectional view showing a third embodiment of the method and apparatus for treating exhaust gas of a spray flux of the present invention.

FIG. 4 is a sectional view showing a fourth embodiment of an exhaust gas treatment method for a spray fluxer and an apparatus therefor according to the present invention.

FIG. 5 is a cross-sectional view showing a fifth embodiment of an exhaust gas treatment method for a spray fluxer and an apparatus therefor according to the present invention.

FIG. 6 is a sectional view showing a sixth embodiment of a method and an apparatus for treating exhaust gas of a spray flux of the present invention.

[Explanation of symbols]

 W Solder plate 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 material 25 Neutralizing solution supply as neutralizing solution supply section Tank 28 Litmus test paper as a means of detecting alkalinity 32 Shower room 33 Shower nozzle 42 Neutralizing solution supply section 43 Tank 44 Sponge roller 51 Cleaning section 61, 62 rolls

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiko Toda 11 Tamura Corporation Sayama Plant, 591, Hirokuse Higashikubo, Kamihirose, Sayama City, Saitama Prefecture

Claims (12)

[Claims] 1. A spray fluxer for spraying a flux sprayed from a spray nozzle onto a soldering plate and forcibly sucking the flux not applied to the soldering plate from a suction port to exhaust the flux. The method for treating exhaust gas of a spray flux, wherein the exhaust gas is neutralized with a neutralizing agent. 2. A spray fluxer for spraying flux applied from a spray nozzle onto a soldering plate and forcibly sucking flux not applied to the soldering plate from a suction port to perform exhaust treatment. A filter body interposed in the exhaust gas exhaust pipe line, a filter medium mounted in the filter body, and a neutralizing liquid supply unit for supplying and impregnating the filter medium with a neutralizing liquid for exhaust gas neutralization. An exhaust gas treatment device for a spray flux, characterized by comprising: 3. A spray fluxer for spraying the flux sprayed from a spray nozzle onto a soldering plate and forcibly sucking the flux not applied to the soldering plate from a suction port to exhaust the flux. In the exhaust gas exhaust pipe line, a shower chamber formed in the filter body, a shower nozzle provided above the shower chamber, and a shower nozzle for neutralizing exhaust gas in the shower nozzle. An exhaust gas treatment device for a spray fluxer, comprising: a neutralization liquid supply system for supplying a neutralization liquid; and an exhaust gas inlet and an outlet provided in the filter body via the shower chamber. 4. A spray fluxer for spraying the flux sprayed from a spray nozzle onto a soldering plate and forcibly sucking the flux not applied to the soldering plate from a suction port to exhaust the flux. In the exhaust gas exhaust pipe line, a shower chamber formed in the filter body, a shower nozzle provided in the upper part of the shower chamber where the exhaust gas is introduced, and a shower nozzle A spray fluxer comprising: a neutralization liquid supply system for supplying a neutralization liquid for exhaust gas neutralization to the exhaust gas; and a filter medium provided below the shower nozzle and upstream from an exhaust gas outlet. Exhaust gas treatment equipment. 5. The exhaust gas treatment device for a spray fluxer according to claim 2, wherein a dry filter is provided at the opening of the suction port body. 6. A spray fluxer for spraying the flux sprayed from a spray nozzle onto a soldering plate and forcibly sucking the flux not applied to the soldering plate from a suction port to exhaust the flux. In the above, the exhaust gas of the spray fluxer is provided with a filter medium provided at the opening of the suction port body and a neutralizing liquid supply unit for supplying and impregnating the filter medium with a neutralizing liquid for exhaust gas neutralization. Processing equipment. 7. The exhaust gas treatment device for a spray fluxer according to claim 6, wherein the sheet-shaped filter medium is provided through the opening of the suction port body so as to be capable of endless circulation. 8. The sheet-shaped filter medium fed from a roll arranged on one side of the suction port body is wound around a roll arranged on the other side of the suction port body through an opening of the suction port body. An exhaust gas treatment device for a spray flux according to claim 6. 9. The neutralizing solution supply section comprises a tank for containing the neutralizing solution, which is provided on the filter medium supply side of the suction port body, and a sponge roller rotatably provided on the tank and in contact with the sheet-like filter medium. An exhaust gas treatment device for a spray fluxer according to any one of claims 6 to 8. 10. The exhaust gas treatment device for a spray fluxer according to claim 9, wherein the tank is provided so as to be movable along the sheet-shaped filter medium. 11. The exhaust gas treatment device for a spray fluxer according to claim 6, further comprising a cleaning unit for cleaning the sheet-shaped filter medium on the filter medium recovery side of the suction port body. 12. The exhaust gas of the spray fluxer according to claim 2, wherein the filter medium is provided with an alkalinity detecting means for detecting the alkalinity of the filter medium to detect the deterioration of the neutralizing ability. Gas treatment equipment.