JP2009028587A - System for collecting excess atomized coating material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a system for collecting excess atomized coating material capable of efficiently collecting excess atomized coating material contained in a discharged gas body without using a liquid such as water. <P>SOLUTION: An automobile component 2 is housed in a coating space 3 of a coating chamber 4 and is coated by spraying coating material mist P1 from a coating machine 13. After contaminated air containing the coating mist P1 non-deposited to the automobile component 2 in the coating space 3 is collected by an air collecting member 21 and is speeded up, the contaminated air is discharged toward a coating material collector 23 from an exhaust pipe line 22. The coating material collector 23 is provided with a container 24 for receiving the contaminated air and a plurality of balls 25 which are housed in the container 24 movable inside and on the surface of which the liquid coating material formed by the condensation of the coating material mist P1 is deposited on the surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a surplus atomized paint collection system for collecting surplus atomized paint that has been applied to a painting booth that sprays paint on an object to be painted and does not adhere to the object to be coated. is there.

  In general, when atomization coating is performed on an object to be coated in a coating booth, the coating chamber is filled with contaminated air (exhaust body) containing paint mist, volatile organic solvent, and the like due to overspray. As a result, the quality of the object to be coated may be impaired by the fogging of the paint mist, and the health of the worker may be harmed by the volatile organic solvent. In order to solve these problems, a painting booth having a structure for sucking contaminated air and discharging it outside the painting chamber has been proposed.

  However, from the viewpoint of pollution prevention, the contaminated air in the painting chamber cannot be released into the atmosphere as it is. Therefore, in the conventional painting booth, an exhaust chamber is installed in the lower part of the painting chamber, and the contaminated air sucked from the painting chamber is purified in the exhaust chamber.

  Specifically, in a painting booth that paints automobile bodies and parts, in the exhaust chamber, contaminated air is brought into contact with a liquid such as water and mixed, and the paint mist contained in the contaminated air is captured by the liquid. Thus, the paint mist is separated and removed from the contaminated air (see, for example, Patent Documents 1 and 2).

In general, it is necessary to ensure water resistance, chemical resistance, weather resistance, durability, and a high-class feeling when painting automobile bodies and automotive parts. Conventionally, painting is performed using solvent-based paints containing organic solvents. I came. However, in recent years, regulations on organic solvents discharged in the painting process and VOC regulations on paints have been increasing, so water-based paints that do not use organic solvents have been developed and used for painting automobile bodies and parts. ing.
JP 2006-142208 A Japanese Patent No. 3656229

  In the painting booth where water-based paint is sprayed to paint, when water is used to capture the paint mist of contaminated air, the captured paint dissolves in the water. Specifically, a solid-liquid separation process for separating water and paint becomes difficult. In addition, problems such as the decay of the paint and the generation of a strange odor occur. Therefore, a collection system that efficiently collects paint mist by a dry method rather than a wet method using water is being studied.

  The present invention has been made in view of the above problems, and an object of the present invention is to obtain an excess atomized paint capable of efficiently collecting the excess atomized paint contained in the exhaust body without using a liquid such as water. To provide a collection system.

  In order to solve the above-mentioned problem, in the invention described in claim 1, a coating chamber having a coating space in which air taken in from the outside is circulated and in which an object to be coated is accommodated, and air and atomized paint are mixed. Paint atomizing means for injecting the atomized paint onto the object to be coated, and mixing of the introduced air and the excess atomized paint that has not adhered to the object to be coated, which is installed downstream of the paint atomizing means A collecting means for gradually increasing the exhaust body, which is a gas, in a path having a small cross-sectional area; an exhaust path for discharging the exhaust body accelerated by the collecting means in a predetermined direction; and In the surplus atomization paint collecting system, the surplus atomization paint collecting system provided with the surplus atomization paint collecting means for adhering and separating the surplus atomization paint contained in the exhaust body increased in speed and installed immediately upstream The paint collecting means receives the accelerated exhaust body The container is configured to include a non-fixed collection solid that is accommodated in a movable state inside the container and can be attached to the surface of the liquid paint derived from the surplus atomized paint. The gist of the surplus atomized paint collection system characterized by

  According to invention of Claim 1, air is taken in into the coating space of a coating chamber from the exterior, and is distribute | circulated. In the painting space, the atomizing paint in which air and the atomized paint are mixed is sprayed by the paint atomizing means to coat the object to be coated. Further, the collecting means is installed on the downstream side of the paint atomizing means, and the exhaust body that is a mixed gas of the air taken in from the outside and the excess atomized paint that has not adhered to the object to be coated is the collecting means. Are gradually gathered in a path having a small cross-sectional area and accelerated. Then, the exhaust body increased in speed by the collecting means is discharged in a predetermined direction through the exhaust path. Further, an excess atomized paint collecting means is installed immediately downstream of the exhaust path, and the exhaust body discharged from the exhaust path is sprayed onto the excess atomized paint collecting means. The surplus atomizing paint collecting means is composed of a container and a non-fixed collecting solid housed in a movable state inside the container, and the accelerated exhaust body is received by the container. At that time, the surplus atomized paint of the exhaust body collides with the surface of the container or the surface of the non-fixed collected solid. Thereby, the liquid paint adheres to the surface of the container or the surface of the fixed collection solid and is separated from the air. In this way, by providing the non-fixed collection solid in the container, the surface area on which the paint can be attached increases, and further, the non-fixed collection solid moves inside the container, so that the paint is evenly distributed on the surface. Can be attached to. Therefore, according to the surplus atomized paint collection system of the present invention, it is possible to efficiently collect the surplus atomized paint contained in the exhaust body without using a liquid such as water as in the prior art.

  The invention described in claim 2 is the invention according to claim 1, wherein the surplus atomized paint collecting means is individually movable inside the container and can be brought into contact with the inner surface of the container. The gist is that a plurality of the non-fixed collecting solids stored therein are provided, and a gap through which the exhaust body including the surplus atomized paint can pass is secured between adjacent non-fixed collecting solids. .

  According to the second aspect of the present invention, the container of the surplus atomized paint collecting means stores a plurality of non-fixed collected solids in contact with the inner surface thereof. Non-fixed collection solids are individually moved independently. A space is secured between these non-fixed collection solids, and an exhaust body containing an excess atomized paint is passed through the space. If comprised in this way, since a coating material can be reliably made to adhere to the surface of each non-fixed collection solid, the collection efficiency of a coating material can be improved.

  The gist of the invention described in claim 3 is that, in claim 1 or 2, provided with non-fixed collection solid moving means for moving the non-fixed collection solid accommodated in the container.

  According to the third aspect of the present invention, since the non-fixed collection solid is moved inside the container by the non-fixed collection solid moving means, the paint is uniformly attached to the entire surface of the non-fixed collection solid. And the collection efficiency of the paint can be increased.

  The gist of a fourth aspect of the present invention is that, in the second aspect, the plurality of non-fixed collection solids have a shape capable of rolling independently on the inner surface of the container. .

  According to the invention described in claim 4, the relative position of each non-fixed collection solid is changed by independently rolling a plurality of non-fixed collection solids. Thereby, a coating material can be made to adhere uniformly to the whole surface of each non-fixed collection solid, and the collection efficiency of a coating material can be improved.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, at least the surface of the non-fixed collection solid is formed of a material having higher adhesion of the paint than the container. Is the gist.

  According to the invention described in claim 5, since at least the surface of the non-fixed collection solid has higher adhesion of the paint than the container, the liquid paint is surely adhered to the surface of the non-fixed collection solid. Can do. In this case, by periodically recovering the paint adhering to the non-fixed collection solid, the cleaning process of the container becomes unnecessary, so that the maintainability can be improved.

  A sixth aspect of the present invention is the method according to any one of the first to fifth aspects, wherein the bottom surface of the container has an inclination, and a paint reservoir or a paint discharge means is provided at a position that is the lowest end of the bottom surface. This is the gist.

  According to the sixth aspect of the present invention, the liquid paint adhering to the surface of the container or the non-fixed collected solid flows along the inclination of the bottom surface of the container and is provided at a position that becomes the lowermost end portion of the bottom surface. Recovered reliably through a paint reservoir or paint discharge means.

  As described in detail above, according to the first to sixth aspects of the invention, it is possible to efficiently collect the excess atomized paint contained in the exhaust body without using a liquid such as water.

[First Embodiment]

  DESCRIPTION OF EMBODIMENTS A first embodiment embodying the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of a painting booth constituting the surplus atomized paint collecting system in the present embodiment.

  As shown in FIG. 1, the painting booth 1 is for forming a coating film on the surface of the automobile part 2 by spraying a water-based paint onto the automobile part 2 (object to be coated). The painting booth 1 is provided with a painting room 4 having a painting space 3 in which down-flow air (a certain direction from the upper side to the lower side) is circulated and in which the automobile parts 2 are stored, and an upper side of the painting room 4. An air supply chamber 5 for supplying downflow air to the coating chamber 4 and an exhaust chamber 6 for exhausting the air in the coating chamber 4 provided below the coating chamber 4 are provided. . In the painting booth 1 in FIG. 1, front side walls in the painting chamber 4 and the exhaust chamber 6 are omitted.

  The floor portion 7 of the painting chamber 4 is formed of a cocoon-shaped member (grating), and a painting table 8 on which the automobile part 2 is placed is provided at a substantially central portion of the floor portion 7. In the painting chamber 4, a painting robot 11 is provided in the vicinity of the painting table 8, and the automobile part 2 is painted by a painting machine 13 (paint atomizing means) attached to the arm 12 of the painting robot 11. . The coating machine 13 used in the present embodiment is a rotary atomizing type coating machine, and sprays a paint mist P1 (atomized paint) in which air and atomized paint are mixed to coat the automobile part 2. Do.

  The air supply chamber 5 is provided with an air conditioning unit 15 including a filter and the like. Then, the air pressure-fed into the air supply chamber 5 through the air supply duct 16 is rectified by the air conditioning unit 15 and then flows down to the painting chamber 4 as air-conditioned air. In the present embodiment, an air intake path is constituted by the air supply duct 16 and the air conditioning unit 15, and conditioned air whose air volume, humidity, temperature, etc. are adjusted to certain conditions is supplied to the painting chamber 4 through the air intake path. It has become.

  The exhaust chamber 6 sucks contaminated air (exhaust body) in the painting chamber 4 by a suction force of an exhaust fan (not shown), and processes the sucked contaminated air. The contaminated air includes paint mist P1 (excessive atomized paint) that has been oversprayed from the coating machine 13 in the painting chamber 4 and has not adhered to the automobile part 2. In addition, an exhaust duct 18 that exhausts air purified in the exhaust chamber 6 to the outside is provided on one side wall of the exhaust chamber 6. The air discharged from the exhaust duct 18 is pumped and exhausted by a fan (not shown). A part of the air discharged from the exhaust duct 18 may be led to the air supply chamber 5 again.

  An air collecting member 21 (collecting means) formed in a pyramid shape for collecting contaminated air is provided at a position downstream of the coating machine 13 and above the exhaust chamber 6. The air collecting member 21 is formed with a path that gradually becomes a smaller cross-sectional area as it goes down, and accelerates while collecting contaminated air in the coating chamber 4 in the path. Further, an exhaust pipe 22 (exhaust path) is connected to the lower end portion of the air collecting member 21, and polluted air accelerated by the air collecting member 21 by the exhaust pipe 22 is lower (intake path). To the exhaust chamber 6 in the opposite direction).

  In the exhaust chamber 6, a paint collector 23 (extra atomized paint collecting means) for adhering and separating the paint mist P <b> 1 contained in the contaminated air is disposed immediately downstream of the exhaust pipe 22. As shown in FIG. 2, the paint collector 23 of the present embodiment includes a container 24 that receives the contaminated air A1, and a liquid paint that is stored inside the container 24 and is derived from the paint mist P1. A plurality of adhering balls 25 (non-fixed collecting solid). The container 24 is a pot-shaped container having a bottom portion 26 and a side wall 27 and having an opening 28 at the upper end, and is formed using a material having low paint adhesion (for example, a resin material such as polypropylene or polyethylene). Yes. In the container 24, the contaminated air A1 discharged from the exhaust pipe 22 collides with the bottom portion 26 at a substantially right angle. The side wall 27 is folded back so as to be substantially perpendicular to the air flow of the contaminated air A1 deflected by the bottom portion 26 thereof. Moreover, in the container 24, the inner side folding | returning part 29 of the side wall 27 is formed in the gentle curved surface shape.

  The ball 25 is a sphere having a diameter of about 20 mm, and is formed using a material (for example, a metal material such as iron, aluminum, stainless steel, or a ceramic material) with high adhesion of paint. Each ball 25 is housed in a state in which it can move independently and contact the inner surface of the container 24 inside the container 24.

  Next, the effect | action of the coating booth 1 of this Embodiment is demonstrated.

  First, when the automobile part 2 is coated by spraying water-based paint from the coating machine 13, the contaminated air A <b> 1 containing the oversprayed paint mist P <b> 1 is accelerated by the air collecting member 21 and is exhausted through the exhaust pipe 22. 6 is discharged. Here, the contaminated air A <b> 1 is increased to a flow rate of, for example, 5 m / second to 50 m / second, and the contaminated air A <b> 1 is blown to the bottom portion 26 of the container 24 at a substantially right angle. Further, the contaminated air deflected at the bottom portion 26 flows along the A1, bottom portion 26 and is blown to the side wall 27. At this time, the air flows along the surfaces of the bottom portion 26 and the side wall 27. However, since the paint mist P1 contained in the contaminated air is heavier than the air, it collides with the bottom portion 26 and the side wall 27 by its inertial force. Thereby, the paint mist P1 adheres to the surface of the bottom part 26 and the side wall 27 as a liquefied paint.

  Also, the contaminated air A1 is blown onto the surface of each ball 25, and the paint mist P1 contained in the air collides with the surface of the ball 25, and the liquefied paint adheres. Further, the air flow of the contaminated air A1 accelerated to 5 m / second to 50 m / second acts on each ball 25 inside the container 24, and each ball 25 rolls due to the air resistance (see FIG. 3A). ). In the present embodiment, since the adhesion of the paint to the ball 25 is higher than that of the container 24, the paint adhering to the bottom 26 and the side wall 27 of the container 24 is scraped off when the ball 25 rolls. Evenly adhere to the ball surface. As a result, as shown in FIGS. 3A to 3E, the paint P2 adheres to the surface of the ball 25 as a nucleus. Then, as shown in FIG. 3 (e), at the timing when the paint P2 is sufficiently adhered to the ball surface and the balls are stuck together and difficult to move, the painting process of the painting booth 1 is stopped to collect the paint. Maintenance of the collector 23 is performed. In this maintenance, the ball 25 to which the paint P2 is adhered is taken out from the container 24, and the ball 25 from which the paint P2 is removed or a new ball 25 to which the paint P2 is not adhered is stored in the container 24. And after this maintenance, the paint booth 1 is operated again, and the paint P2 is efficiently collected by the paint collector 23.

  Therefore, according to the present embodiment, the following effects can be obtained.

  (1) In the painting booth 1 of the present embodiment, the air collecting member 21 is installed on the downstream side of the painting machine 13, and the paint mist that has not adhered to the air taken in from the air supply chamber 5 and the automobile part 2 The polluted air A1, which is a mixed gas with P1, is gradually gathered and accelerated by the air collecting member 21 along a path having a small cross-sectional area. Then, the increased contaminated air A1 is blown toward the paint collector 23 in the exhaust chamber 6 through the exhaust pipe 22. The paint collector 23 includes a container 24 and a plurality of balls 25 housed in a movable state inside the container 24, and the accelerated contaminated air A 1 is received by the container 24. . At that time, the paint mist P <b> 1 contained in the contaminated air A <b> 1 collides with the surface of the container 24 and the surface of each ball 25. Thereby, the liquid paint P2 adheres to the surface of the container 24 and the surface of each ball 25 and is separated from the air. In the container 24, a plurality of balls 25 are stored in contact with the inner surface of the container 24, and each ball 25 is individually moved. In this case, a gap is secured between the balls 25, and the contaminated air A1 containing the paint mist P1 is reliably passed through the gap. Thus, by providing each ball 25 in the container 24, the surface area on which the paint P <b> 2 can be attached increases, and furthermore, as each ball 25 moves in the container 22, the paint P <b> 2 is applied to the surface thereof. Uniform adhesion is possible. Therefore, according to the present embodiment, the paint mist P1 contained in the contaminated air A1 can be efficiently collected without using a liquid such as water as in the prior art.

  (2) In the present embodiment, the contaminated air A1 accelerated by the air collecting member 21 is blown to each ball 25 in the container 24, and each ball 25 is moved by the air resistance of the airflow of the contaminated air A1. . In particular, each ball 25 has a shape most suitable for rolling, and each ball 25 can be easily moved by the wind pressure of the contaminated air A1. Thus, by moving each ball | bowl 25, since the coating material P2 can adhere uniformly to the whole surface, the collection efficiency of the coating material mist P1 can be improved.

(3) In the present embodiment, since the ball 25 is formed using a material having a higher adhesion of the paint P2 than the container 24, the paint P2 on the surface of the container 24 is reliably adhered to the surface of the ball 25. Can do. In this case, by periodically collecting the paint P2 adhering to each ball 25, the cleaning process of the container 24 becomes unnecessary, so that maintainability can be improved.
[Second Embodiment]

  Next, a second embodiment of the present invention will be described with reference to FIG.

  The surplus atomized paint collecting system of this embodiment differs from the first embodiment in that the non-fixed collection solid moving means is provided in the paint collector 23, and other configurations are the same as those of the first embodiment. The form is the same.

As shown in FIG. 4, the non-fixed collection solid moving means of the present embodiment is provided outside the container 24 in the paint collector 23 and is connected to the side wall 27 of the container 24. And a support spring 32 that supports the lower portion of the container 24. Then, when the vibration device 31 is driven and the container 24 is vibrated left and right, each ball 25 can be freely moved inside the container 24. If comprised in this way, since the coating material P2 can be made to adhere uniformly to the whole surface of the ball | bowl 25, the collection efficiency of the coating material P2 can be improved.
[Third Embodiment]

  Next, a third embodiment of the present invention will be described with reference to FIG.

  In the surplus atomized paint collection system of the present embodiment, the configuration of the paint collector 41 is different from that of the first embodiment, and other configurations are the same as those of the first embodiment.

  As shown in FIG. 5, the paint collector 41 according to the present embodiment includes a pot-shaped container 44 having a bottom part 42 and a side wall 43, and a plurality of balls stored in a movable state inside the container 44. 25. A paint recovery groove 46 having an inclined bottom surface 45 is formed at the bottom 42 of the container 44. The paint collecting grooves 46 have a width smaller than the diameter of the ball 25, and a plurality of the paint collecting grooves 46 are formed at equal intervals on the bottom 42 of the container 44. And the drain 47 as a paint discharge means is connected to the position which becomes the lowest end part of the bottom face 45 in each paint collection groove | channel 46. FIG. The paint collector 41 of the present embodiment is used when a relatively large amount of paint mist P1 is contained in the contaminated air A1. In this case, the paint mist P1 contained in the contaminated air A1 is liquefied by colliding with the surface of the container 44 (the surface of the bottom portion 42 and the side wall 43) and the surface of the ball 25. Then, the liquid paint P2 flows down from the surface of the container 44 or the surface of the ball 25, and further flows along the inclined bottom surface 45 of the paint recovery groove 46 at the bottom 42 of the container 44, thereby draining the paint 47. It is recovered through. Thus, by comprising the coating material collector 41, the collection efficiency of the coating material P2 can be improved.

  In addition, you may change embodiment of this invention as follows.

  In the first embodiment, the number of balls 25 to be stored is relatively small in the container 24 of the paint collector 23 so that each ball 25 can move freely. As shown in FIG. 6, more balls 25 (non-fixed collection solids) may be accommodated. When the container 24 is filled with a plurality of balls 25 as in the paint collector 23 of FIG. 6, the collected solid layer 250 is constituted by the plurality of balls 25, and the contaminated air starts from a substantially central portion on the surface layer side. A1 enters. The contaminated air A1 that has passed through the inside of the collected solid layer 250 is deflected by the lower layer and the bottom of the container, and then escapes from the peripheral portion on the surface layer side. In this way, the airflow of the contaminated air A1 naturally flows in the collected solid layer 250, so that it collides uniformly with the surface of each ball 25, so that the collection efficiency of the paint mist P1 can be increased. 6, a cover member (not shown) that covers the upper portion of the container 24 is provided, and a discharge port (not shown) is provided in the side wall 27 of the container 24 so as to pass through the collected solid layer 250. The air A2 thus purified may escape from the side wall 27 of the container 24.

  In the second embodiment, the non-fixed collection solid moving means including the vibration device 31 and the support spring 32 is provided. However, the present invention is not limited to this. As the non-fixed collection solid moving means, for example, as shown in FIG. 7, a blade member (stirring means) 51 for stirring each ball 25 arranged inside the container 24 and arranged outside the container 24. A motor 52 for rotationally driving the blade member 51 may be provided. Even in this case, since each ball 25 is reliably moved inside the container 24, the paint P2 can be uniformly attached to the entire surface of each ball 25, and the collection efficiency of the paint P2 can be increased. Further, as shown in FIG. 8, a magnet 54 (magnetic force generating means) that forms a ball 25 as a non-fixed collection solid with a magnetic material such as iron and applies a magnetic force to the ball 25 outside the container 24. The non-fixed collection solid moving means may be constituted by the motor 55 for rotating the magnet 54. Even in this case, since each ball 25 is reliably moved inside the container 24, the paint P2 can be uniformly attached to the entire surface of each ball 25, and the collection efficiency of the paint P2 can be increased. Further, as the non-fixed collection solid moving means, a driving device (not shown) for moving the container 24 itself (for example, rotational movement in one direction, reciprocating rotational movement, linear reciprocating movement, inclined reciprocating movement) may be provided. Alternatively, each ball 25 once moved to the outside of the container 24 by using the driving device may be returned to the inside of the container 24. Even in this case, since each ball 25 is reliably moved inside the container 24, the paint P2 can be uniformly attached to the entire surface of each ball 25, and the collection efficiency of the paint P2 can be improved. it can.

  In the third embodiment, the drain 47 for discharging the paint is provided on the inclined bottom surface 45 of the paint collector 41. However, a paint pool is provided instead of the drain 47, and the paint P2 accumulated in the paint pool. You may comprise so that it may collect | recover regularly. Alternatively, for example, a pump may be provided as a paint discharge means instead of the paint discharge drain 36, and the accumulated paint P2 may be discharged regularly or periodically using this pump.

  In the paint collectors 23 and 41 of each of the above embodiments, the purified air A2 is escaped from the openings at the upper ends of the containers 24 and 44. However, the present invention is not limited to this. For example, you may comprise so that the air A2 purified from the bottom part 26 in the container 24 may be made to escape like the coating material collector 57 of FIG. Specifically, in the paint collector 57 of FIG. 9, the opening 28 at the upper end of the container 24 is sealed with a lid member 58. An exhaust port 59 is provided in the bottom portion 26 of the container 24, and a metal filter 60 is attached to the exhaust port 59. Further, the paint collector 57 is provided with a non-fixed collection solid moving means comprising a blade member 51 and a motor 52, as in the paint collector 23 of FIG. When the paint collector 57 is configured as described above, the paint mist P1 contained in the contaminated air A1 is separated from the air by colliding with and adhering to the surface of the container 24 and the surface of the ball 25. Then, the air passes through the metal filter 60 at the exhaust port 59 of the bottom portion 26 and is further purified, and then exhausted. Even if the paint collector 57 is configured in this way, the collection efficiency of the paint P2 can be increased.

  In each of the above embodiments, the ball 25 is used as the non-fixed collection solid, but it may be any shape that can roll independently, for example, in addition to a sphere, a polygon, a columnar body, a complex, a rod shape The body may be used. If it does in this way, the relative position of each non-fixed collection solid can be changed because each non-fixation collection solid rolls independently independently. Thereby, since a coating material can be reliably made to adhere to the surface of each non-fixed collection solid, the collection efficiency of the coating material P2 can be improved.

  In each of the above embodiments, the ball 25 is formed using a material having a higher adhesion of the paint P2 than the container 24. However, it is not necessary to form the entire ball 25 from the same material, and only the surface thereof is adhered. You may form using a material with high property. Specifically, for example, the surface of the ball 25 may be covered with an adhesive coating film (film coating or the like). Further, the adhesion of the coating material P2 on the container 24 side may be lowered by covering the surface of the container 24 with a coat film (fluorine coat) of a low friction material.

  In each of the above embodiments, the automobile part 2 is painted using a water-based paint, but the automobile part 2 may be painted using a solvent-type paint. Moreover, you may paint parts, such as household appliances, other than the motor vehicle part 2 as a to-be-coated object.

  Next, in addition to the technical ideas described in the claims, the technical ideas grasped by the respective embodiments described above are listed below.

  (1) The surplus atomized paint according to claim 3, wherein the non-fixed collected solid moving means moves the non-fixed collected solid once moved to the outside of the container to return to the inside of the container. Collection system.

  (2) In the third aspect, the non-fixed collected solid moving means moves the non-fixed collected solid by the fluid resistance of the air flow of the exhaust body which has been accelerated. system.

  (3) In Claim 3, the non-fixed collection solid moving means includes a vibration means connected to the container, and moves the non-fixed collection solid by vibration by the vibration means. Surplus atomization paint collection system.

  (4) In Claim 3, the non-fixed collection solid moving means includes stirring means disposed in the container, and the non-fixed collection solid is moved by driving the stirring means. Surplus atomization paint collection system.

  (5) In Claim 3, the non-fixed collection solid moving means includes drive means for moving the container itself, and moves the non-fixed collection solid as the container is moved by the drive means. Surplus atomized paint collection system.

  (6) In Claim 3, the non-fixed collecting solid is made of a magnetic material, and the non-fixed collecting solid moving means includes a magnetic force generating means for applying a magnetic force from the outside of the container, and the magnetic force of the magnetic force generating means. The non-fixed collected solid is moved by the surplus atomized paint collecting system.

  (7) In any one of claims 1 to 6, in the surplus atomized paint collecting means, the container is filled with a plurality of non-fixed collection solids, and the plurality of non-fixed collection solids. The exhaust body which has been deflected on the lower layer side of the collected solid layer and the bottom surface of the container after allowing the exhaust body to enter from the substantially central portion on the surface side of the collected solid layer and passing through the inside of the collected solid layer Is allowed to escape from the peripheral portion on the surface layer side of the collected solid layer.

  (8) In any one of claims 1 to 6, in the surplus atomized paint collecting means, the container is filled with a plurality of non-fixed collection solids, and is composed of the plurality of non-fixed collection solids. The surplus wherein the exhaust body is allowed to enter from the surface layer side of the collected solid layer to pass through the inside of the collected solid layer, and then the exhaust body is allowed to escape from the side wall of the container. Atomization paint collection system.

Sectional drawing which shows the coating booth of 1st Embodiment which actualized this invention. Sectional drawing which shows the coating material collector in 1st Embodiment. (A)-(e) is explanatory drawing which shows the adhesion state of the coating material in each ball | bowl. Sectional drawing which shows the coating material collector in 2nd Embodiment. Sectional drawing which shows the coating material collector in 3rd Embodiment. Explanatory drawing which shows the coating material collector in another embodiment. Explanatory drawing which shows the coating material collector in another embodiment. Explanatory drawing which shows the coating material collector in another embodiment. Explanatory drawing which shows the coating material collector in another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Painting booth which comprises surplus atomization paint collection system 2 ... Automobile parts as coating object 3 ... Painting space 4 ... Painting room 13 ... Coating machine as paint atomization means 21 ... Air collecting member as gathering means 22 ... Exhaust piping as exhaust path 23, 41, 57 ... Paint collector 24, 44 ... Container 25 ... Container 25 ... Ball as non-fixed collection solid 31 ... Non-fixed collection solid Vibrating device constituting moving means 32... Supporting spring constituting non-fixed collecting solid moving means 45... Bottom surface 47. Drain as paint discharging means 51 .. wing members 52 and 55 constituting non-fixed collecting solid moving means. ... Motor constituting non-fixed collecting solid moving means 54 ... Magnet constituting non-fixed collecting solid moving means A1 ... Contaminated air as exhaust body P1 ... Paint mist as atomized paint P2 ... Liquid paint

Claims (6)

A painting room having a painting space in which air taken in from the outside is circulated and an object to be coated is stored;
Paint atomizing means for injecting the atomized paint, which is a mixture of air and atomized paint, onto the object to be coated;
The exhaust body, which is a gas mixture of the air taken in and the excess atomized paint that has not adhered to the object to be coated, is installed on the downstream side of the paint atomizing means and gradually gathers in a path having a small cross-sectional area. Collecting means to increase speed while
An exhaust path for discharging the exhaust body accelerated by the collecting means in a predetermined direction;
In the surplus atomizing paint collecting system, comprising the surplus atomizing paint collecting means that is installed on the downstream side of the discharge path and attaches and separates the surplus atomized paint contained in the accelerated exhaust body,
The surplus atomizing paint collecting means is accommodated in a container for receiving the accelerated exhaust body and a movable state inside the container, and the liquid paint derived from the surplus atomizing paint is on its surface And a non-fixed collection solid that can be attached to the surplus atomized paint collection system.   The surplus atomized paint collecting means includes a plurality of the non-fixed collecting solids that are individually movable inside the container and accommodated in contact with the inner surface of the container. The surplus atomized paint collection system according to claim 1, wherein a space through which an exhaust body including the surplus atomized paint can pass is secured between the non-fixed collected solids.   The surplus atomized paint collection system according to claim 1 or 2, further comprising non-fixed collection solid moving means for moving the non-fixed collection solid accommodated in the container.   The surplus atomized paint collecting system according to claim 2, wherein the plurality of non-fixed collecting solids have a shape capable of rolling independently on the inner surface of the container.   The surplus atomized paint according to any one of claims 1 to 4, wherein at least a surface of the non-fixed collection solid is formed of a material having higher adhesion of the paint than the container. Collection system.   The surplus mist according to any one of claims 1 to 5, wherein a bottom surface of the container has an inclination, and a paint reservoir or a paint discharge means is provided at a position which becomes a lowermost end portion of the bottom face. Paint collection system.

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