JP2001219111A - Device for recovering coating mist - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce noise generated in any one of various coating booths to coating operators and to prevent coating materials from sticking to rough baffle plates installed for uniformaing wind velocity at the opening in the booth. SOLUTION: The baffle plates for a water stream are formed in vertical lines at horizontal intervals in the opening in the coating booth so that water fed to an overflow vessel placed at the upper part may overflow and flow down to the above baffle plates to form a water film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to reduce noise to workers due to exhaust fans and draining noise generated from a painting booth during painting work and to reduce unevenness in wind speed of suction airflow at an opening in the front of the booth. The present invention relates to a water baffle plate type paint mist recovery device provided at an opening of a coating booth.

[0002]

2. Description of the Related Art Improvements in paint mist collection performance and maintainability of a paint booth have been promoted, but the work environment for paint workers has not been sufficiently improved. They had to work in the noise such as draining noise. Further, in the wet coating booth, since the suction port is provided at the lower part of the booth processing tower, there is a tendency that unevenness in the wind speed at the opening is likely to occur.

FIG. 5 (B) shows a shower-type water-flow-plate type coating booth in which water 51 in a water tank is collected by passing a paint mist through water drops 53 sprayed in a shower shape by a pump. A front part of a treatment tower 55 composed of a shower part 52 and a draining eliminator 54 has an upper water plate 56a and a lower water plate 56.
The upper supply water supplied to the upper gutter 57 overflows from the gutter 57 to form a water film on the upper water flow plate 56a and the lower water flow plate 56b. Lower water plate 56b
A water tank 51a is provided below the water tank 51, and a suction port 58 is formed in a gap with the water 51. A suction air flow 60 is generated by the exhaust fan 59.
In No. 2, wind speed unevenness occurs vertically. As a result, there is a problem that a large difference occurs between the airflow 63 near the ceiling and the airflow 64 near the suction port 58.

In a venturi-type painting booth shown in FIG. 6A, the water 70 in a water tank 70a is used without using a pump.
Venturi section 73 called a swirl chamber with suction air 72 and paint mist together with water only by the suction force of exhaust fan 71
At high speed, and the paint mist is collected in the water droplets by the gas-liquid contact at this time and the inertial force due to the centrifugal force.
Then, since the suction air 72 is generated in the lower part of the painting booth, the airflow 75 of the front opening 74 has unevenness in wind speed at the top and bottom. As a result, a large difference occurs between the airflow 76 near the ceiling and the airflow 77 near the venturi portion 73 that is the suction port.

[0005] As a result, since the wind speed is different at the upper and lower positions of the opening of the coating booth, there is a problem that the coating efficiency is different at the upper and lower positions when coating with the spray gun, resulting in a difference in the coating film thickness. Had. Also, increase the total exhaust volume of the exhaust fan to solve the problem that paint mist is easily trapped near the ceiling and to satisfy the reference wind speed of the local exhaust system where the painting booth is legally applied at the front opening. There is a problem that noise and energy consumption increase due to the necessity.

[0006] Regarding noise, in the shower booth, the exhaust fan and the shower sound directly affect the worker from the suction port 58 as a sound of about 80 db. In the Venturi-type painting booth, the sound of the exhaust fan and drainage is about 83 by using a turbo-type exhaust fan to let water and paint mist pass through the venturi section together with suction air at high speed.
This is a work environment that is bad for a worker in terms of sound because it is high around db, and it has been required to reduce noise to the worker.

In the dry-type painting booth shown in FIG. 6, paint mist generated in the painting operation is entrained in the suction air flow 81 by the exhaust fan 80, and the paint mist collecting plate forming a maze called a baffle plate 82 is inertially applied. The paint mist is collected by colliding the paint mist or attaching the paint mist to the fibrous filter 83. The present applicant also discloses in JP-A-49-42744 a structure for collecting paint mist in a dry coating booth, but in a dry coating booth, the sound of an exhaust fan easily passes through a baffle plate and a filter. There was a problem that it was difficult to reduce the sound. In addition, when used for automatic coating, there is also a problem that the paint mist concentrates on a certain portion of the baffle plate 82 and the baffle plate 82 and the filter 83 are partially clogged in a short period of time. .

For this reason, the present applicant has disclosed the structure shown in FIGS. 7A and 7B in Japanese Utility Model Publication No. 53-8700. Roughing plates 85 and 86 are arranged in front of the baffle plate 82 and the water flow plate 84, and the attached paint is collected in a collection container 87.
88. However, the paint adhered to the roughing plates 85 and 86 adheres after the work of one day, so that the paint cannot be recovered as expected, and if the maintenance is poor, the roughing plates 85 and 86 adhere to each other with the paint. Thus, there is a problem that suction becomes worse and maintenance becomes difficult.

[0009]

SUMMARY OF THE INVENTION The present invention relates to a baffle plate-shaped roughing plate provided in various coating booths for reducing noise to the coating operator generated from the coating booth and for equalizing the wind speed at the opening. The purpose is to prevent paint from adhering to the surface.

[0010]

According to the first aspect of the present invention, the paint mist is sucked and collected together with the airflow sucked by the exhaust fan, and the paint mist is arranged vertically in the opening of the paint booth with a horizontal space therebetween. A water baffle plate is provided, and water supplied to an overflow tank provided above the water baffle plate overflows and flows down to the baffle plate to form a water film. In the second invention, the paint mist is sucked into the processing tower together with the air flow sucked by the exhaust fan and collected with water. A water flow baffle plate is arranged, and water supplied to an overflow tank provided above the baffle plate overflows and flows down to the water flow baffle plate to form a water film. According to a second aspect of the present invention, the paint mist is sucked into the processing tower together with the air flow sucked by the exhaust fan and collected by water, and a water flow plate for forming a water film on the front of the processing tower is provided. At the front of the booth, a water flow baffle plate vertically arranged with a horizontal space therebetween is provided, and water supplied to an overflow tank provided at an upper portion of the water flow baffle plate is overflowed, and the front water flow plate is provided. And flowing down to the water baffle plate to form a water film.

[0011]

1 and 2 show a configuration in which a water flow baffle plate as a paint mist recovery device of the present invention is disposed at an opening of a coating booth. FIG. 1 is attached to a shower type water flow plate type water washing booth. (A) is a cross-sectional configuration diagram,
(B) is a figure which shows a front view. FIG. 2 is a detailed view for explaining formation of a water film on the water flow baffle plate of FIG. 1, (A) is a detailed cross-sectional view, (B) is a horizontal cross-sectional view of the water flow baffle plate, and (C).
Is a bird's eye view. FIG. 3 is a diagram showing another structure in which a water baffle plate is independently attached to an opening of a shower type water plate type flush booth.

FIG. 1 shows an example in which a water baffle plate is attached to the conventional shower type water plate paint booth described with reference to FIG. 5, and FIG. 1 will be described in detail with reference to FIG. In the water flow plate type painting booth, the water 3 in the water tank 51a is sent from the pipe 3a to the shower room 52 by the pump 3 to form the shower 53, and the paint mist contained in the suction air flow 60 is collected. In this embodiment, the water flow baffle plate 10 is disposed in front of the integrated water flow plate 15.
Has an effect of reducing transmission of the noise generated mainly in the shower room 52 and the wind noise of the exhaust fan 59 to the operator side, and an effect of reducing the wind speed unevenness of the suction airflow at the front opening. In addition, a part of the paint mist from a spray gun (not shown) is applied to the water film 13 of the water baffle plate 10.
It also has the effect of reducing the amount of paint mist sucked into the painting booth by colliding with and taking in b.

FIG. 2 (B) is a view showing the water baffle plate 10 in a horizontal cross section. The left and right ends of the long plate are bent in the same direction at an angle, and a plurality of the long plates are vertically elongated on the hook 10a. When the upper supply water 11a from the pump 3 / pipe 3b flows into the gutter 11 while being suspended and further spaced apart in the lateral direction and being arranged in front of the front water flow plate 15, the film overflows from the gutter 11 to the front. The water film 13 flows down on the surface of the upper water flow plate 12 in the form of a water film, and at the contact point 12a between the upper water flow plate 12 and the water flow baffle plate 10, the water flow baffle plate 10 Move to. Then, the water film 13b flows down the surface of the water flow baffle plate 10, and flows down to the water tank 51 while taking in the colliding paint mist.

The water film 13c which has not migrated from the surface of the upper water flow plate 12 to the water flow baffle plate 10 between the water flow baffle plates 10 of the water film 13 overflowing from the gutter 11 to the front is a front water flow plate. 15, the upper water flow plate 12 is extended to just before the front water flow plate 15.

On the other hand, the water film 14 which has overflowed from the gutter 11 to the far side moves to the upper part 15a of the front water flow plate 15 in a water film form, and the water film 14a flows down from the curved upper part 15b to the front water flow plate 15, and the water film 14 The paint mist colliding with 14b flows into the water tank 51a while being taken in. In the process,
As described above, the water film 13c that has not transferred from the surface of the upper water flow plate 12 to the water flow baffle plate 10 transfers to the front water flow plate 15. As a result, the shower room 52
, And the rate at which the sound from the exhaust fan 59 directly affects the coating operator. Gutter 1
Water 14 that overflows from 1 to the back side is curved upper part 15
b, the gap between the gutter 11 and the upper part 15a becomes large, so that even if the gutter 11 drops from the gutter 11 and drops from the gutter 11, it falls into the curved upper part 15b. It has a structure in which it does not have a fear that it will fall directly into the water tank 51a from 11 and generate a water splashing sound or water droplets will fly to the painted object. Further, in the present embodiment, the upper supply water 11a overflows in a film form from before and after the gutter 16 to form a water film on the water flow baffle plate 10 and the front water flow plate 15, but the upper supply water flows from a plurality of gutters. It may flow to the baffle plate 10 and the front water flow plate 15 individually.

FIG. 3 shows an example in which the water flow baffle plate 1 is disposed independently of the upper water flow plate 56a and the lower water flow plate 56b of the shower type water flow plate type painting booth shown in FIG. As in FIG. 1 (B), they are arranged vertically in the opening of the coating booth with a space in the horizontal direction. When the upper supply water is supplied to the gutter 57 and the gutter 2 by the pump 3, the gutter 57
The upper feed water from the upper flow plate 56a and the lower flow plate 56b
Drops while forming a water film on the surface of. On the other hand, the upper supply water from the gutter 2 overflows to the auxiliary water flow plate 4 so that the whole amount flows to the water flow baffle plate 1. As a result, it is possible to reduce the wind noise from the exhaust fan 59 and the sound from the shower room 52 from being directly transmitted to the operator, and also to reduce the unevenness of the wind speed above and below the suction air flow.

FIG. 4 shows an example in which a water baffle plate 5 is provided independently of the baffle plate 82 of the dry coating booth shown in FIG. 7, and the water baffle plate 5 is similar to the coating booth shown in FIG. The openings are arranged vertically with a horizontal space therebetween. A water tank 9a containing water 9 under the water baffle plate 5
The water 9 is supplied to the gutter 7 by a pump (not shown). The water 9 overflows to the auxiliary water flow plate 6, and then the whole amount flows to the water flow baffle plate 5. As a result,
It is possible to reduce the wind noise of the exhaust fan 80 from being directly transmitted to the worker, and to reduce the unevenness of the wind speed above and below the suction air flow. Further, since the paint mist from the spray gun can be roughly removed by the water baffle plate 5, the problem that the paint mist adheres to the baffle plate 82 of the dry paint booth and is clogged in a short time can be solved.

As described above, the water flow baffle plate is provided in front of the upper water flow plate 56 and the lower water flow plate 57 of the shower type water flow plate type coating booth, in front of the integrated water flow plate 15, or in front of the baffle plate 82 of the dry coating booth. The above-described effects can be obtained by installing the. The water baffle plate can be installed on the opening surface of another type of painting booth. Even if the water baffle plate is installed in front of the front plate 78 of the venturi type painting booth shown in FIG. It is possible to reduce the air flow and the unevenness of the air flow 75 at the front opening 74 in the vertical direction. Further, the shape of the water flow baffle plate 10 in the present embodiment is an example, and various shapes are conceivable, and at the same time, the sound insulation effect and the effect of reducing the vertical wind speed unevenness of the air flow are arranged not only in one row but also in two rows before and after. Can be strengthened.

[0019]

The present invention has the following effects by arranging the water baffle plate at the openings of various coating booths as described above. (1) The sound generated from the painting booth is blocked by the water flow baffle plate to reduce the transmission of the sound to the operator. (2) Even when the suction port is below the opening of the coating booth, as in the case of a shower-type water flow plate type coating booth or a venturi type coating booth, it is possible to reduce the vertical wind speed unevenness of the suction air flow. it can. (3) By arranging the water baffle plate in front of the baffle plate of the dry coating booth, it is possible to solve the problem that mist adheres intensively to some of the baffle plates and clogs in a short period of time.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, in which a water baffle plate is attached to a water plate type painting booth,
(A) is a sectional view, and (B) is a front view.

FIGS. 2A and 2B are detailed cross-sectional views illustrating formation of a water film on a water flow baffle plate, wherein FIG. 2A is a detailed cross-sectional view, FIG. 2B is a horizontal cross-sectional view of the water flow baffle plate, and FIG. Bird's-eye view explaining film formation.

FIG. 3 is a view showing another embodiment of the present invention, in which a water flow baffle plate is independently attached to a shower water flow plate type painting booth.

FIG. 4 is a view showing another embodiment of the present invention, in which a water baffle plate is independently mounted in front of a baffle plate of a dry coating booth.

FIG. 5A is a cross-sectional view of a conventional Venturi type painting booth, and FIG. 5B is a cross-sectional view of a conventional water flow plate type painting booth.

FIG. 6 is a configuration sectional view of a conventional dry-type painting booth.

FIG. 7 is an explanatory view in which a dry baffle plate for roughly removing paint mist is attached in front of a painting booth, in which (A) an example in which it is attached to a water flow plate type painting booth and (B) an example in which it is attached to a dry type painting booth.

[Explanation of symbols]

 9 Exhaust fan 11 ・ 11a Air flow 11b Suction port 13 Paint mist 14 Collection unit 15 Treatment tower 16 ・ 51 Gutter 17.55 Front water flow plate 17b Inclined portion 17a ・ 20a ・ 22a Tip 20 ・ 22 Dispersion plate 18.54b water Membrane 24 Lower water flow plate 28 Space 50 Baffle plate 51 Upper supply water

Claims (3)

[Claims] A water baffle plate is provided at an opening of a coating booth for sucking and collecting a paint mist together with an air flow sucked by an exhaust fan and vertically arranged with a horizontal space therebetween. A paint mist collecting device, wherein water supplied to an overflow tank provided above a baffle plate overflows and flows down to the baffle plate to form a water film. 2. A wet coating booth in which a paint mist is sucked into a processing tower together with an air flow sucked by an exhaust fan and collected by water, and is arranged vertically at a front portion of the processing tower in a wet coating booth while maintaining a horizontal space. A water baffle plate is provided, and water supplied to an overflow tank provided above the baffle plate overflows and flows down to the water baffle plate to form a water film. Mist collection device. 3. A water flow plate type coating booth in which a paint mist is sucked into a processing tower together with an air flow sucked by an exhaust fan and collected by water, and a water flow plate for forming a water film is provided on the front surface of the processing tower. A water flow baffle plate arranged vertically in a horizontal direction at a front portion of the water flow baffle plate is provided, and water supplied to an overflow tank provided at an upper portion of the water flow baffle plate overflows, and the front water flow plate and A paint mist collecting device, wherein a water film is formed by flowing down the water baffle plate.