JP2017140583A - Coating mist collecting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating mist collecting apparatus that enhances collection efficiency and reduces the cost of water to be used.SOLUTION: A coating mist collecting apparatus comprises a collection part, a cleaning water supplier, a water guide plate having a gradient directing to the first end edge and the second end edge opposed to each other in a gas water intake port to guide cleaning water supplied from the cleaning water supplier into the gas water intake port, and a blower that exhausts the gas guided through the air duct of the collection part into the collection chamber, where the collection part comprises a first collection plate extending at an acute angle obliquely downward from the first end edge of the gas water intake port with respect to a direction along the water guide plate, a second collection plate extending at an obtuse angle obliquely downward from the second end edge of the gas water intake port with respect to a direction along the water guide plate, and a third collection plate having a surface separated from the lower end of the first collection plate and arranged by facing a direction where the first collection plate extends and an upper end edge directing to the second collection plate and arranged by directing to the second collection plate and separating from the second collection plate.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a paint mist collecting device that separates and collects paint mist from a gas containing paint mist generated in a paint room (painting booth) and cleans the air.

  As a conventional device that separates and collects paint mist from a gas containing paint mist scattered in a paint booth and exhausts the air to the outside, a wet collection device is known (for example, Patent Documents). 1).

  Such a conventional wet collection device will be described with reference to FIG.

  As shown in FIG. 18, in the painting booth 501, for example, a paint using an organic solvent as a solvent is sprayed from a painting robot 502 toward an object (object to be coated) 504 in a mist form. Therefore, the painting booth 501 is filled with the coating mist 503 called overmist that has not adhered to the object 504. The air containing the coating mist 503 is adjusted to a predetermined temperature and humidity by the air conditioner 520 and then returned to the coating booth 501 again by the blower 505 in order to reduce the air conditioning cost. However, when the air containing the paint mist 503 is returned to the paint booth 501, the paint booth 501 is further filled with the paint mist 503 to reduce the quality of the painting process, or the paint mist 503 adheres to the air conditioner 520 and warms. Humidity adjustment may not be possible. Therefore, a wet collection device 506 having a collection chamber 523 is installed between the painting booth 501 and the blower 505. In addition, an air supply / exhaust port 521 for exchanging a part of the air in order to reduce the concentration of the solvent gas in which the organic solvent has volatilized, and an air conditioner filter 522 for further reducing the concentration of the coating mist 503 are installed.

  The wet collection device 506 is provided below a grating-like grating 507 installed in the painting booth 501. The air containing the coating mist 503 is sucked into the wet collection device 506 from above. In the wet collection device 506, first, the air containing the coating mist 503 is guided to the first venturi 509 where the air containing the coating mist 503 and the water 508 are contact-mixed. The first venturi 509 is a gap obtained by arranging a water reservoir 510 that drops and supplies water 508 from above and an inclined plate A511. Water 508 is separately supplied from the water tanks 512 provided on the left and right sides of the water reservoir 510 through the inclined plate A511, and the water 508 is guided to the first venturi 509 through the inclined plate A511.

  The first venturi 509 has a shape narrowed like a nozzle, and the air guided from the coating booth 501 passes in a state where the passage speed is increased. The water 508 guided to the first venturi 509 is caught in the air flowing at high speed and is torn and becomes a mist. The air and mist-like water 508 are mixed in the first venturi 509, and the coating mist 503 contained in the air comes into contact and is taken into the mist-like water 508. Thereafter, the air and the water 508 are guided to the second venturi 514 formed by the two inclined plates B513, where the air and the mist-like water 508 are mixed, and the coating mist 503 in the air comes into contact with the mist. Of water 508.

  The mist-like water 508 falls by gravity to a treated water tank 515 provided below the second venturi 514. The mist-like water 508 that has been carried on the air flow without falling collides with the baffle plate 516 provided on the downstream side of the second venturi 514, and then is collected in the treatment water tank 515 through the inclined plate C 517. The water 508 collected in the treated water tank 515 contains the collected paint mist 503. Therefore, a flocculant containing sodium aluminate or the like is introduced, and the coating mist 503 dispersed in the water 508 aggregates to form a lump (hereinafter referred to as sludge). Thereafter, the water 508 is separated into sludge and water 508 from which the coating mist 503 has been removed to some extent by passing through the separation device 518. The water 508 obtained by separating the sludge is pumped up to the water storage tank 512 by the pump 519, sent again to the first venturi 509, and used for collecting the paint mist 503.

JP-A-6-254454 (5th page, FIG. 1)

  Such a conventional wet collection device generally provides a collection efficiency of about 80 to 90% by the filter paper weight method, but maintenance such as extending the life of the air conditioner filter and reducing the cost for replacement, for example. In order to reduce the cost, it is required to further increase the collection efficiency.

  Moreover, since a large amount of water is used to collect the paint mist, a large amount of water containing the paint mist is generated. Therefore, a large amount of a flocculant is required to agglomerate the underwater paint mist into sludge. At the same time, there is a problem in that the amount of water exchanged and discarded increases, the amount of water used for collection increases, and the cost of water increases.

  Then, this indication solves the said conventional subject, and aims at providing the coating mist collection apparatus which raises collection efficiency and reduces the cost of the water to be used.

  In order to achieve the above object, a paint mist collecting apparatus according to one aspect of the present disclosure has an air passage that guides a paint mist-containing gas sucked from a painting chamber together with cleaning water to the collecting chamber. , A collector that separates the paint mist from the paint mist-containing gas by passing through the air passage, a cleaning water supply device that supplies cleaning water upstream of the collector, and air that is the entrance of the air passage The intake port has a gradient toward the first end edge and the second end edge facing each other, and guides the wash water supplied from the wash water supply device to the air intake port, and through the air passage of the collection unit A blower that exhausts the gas guided into the collection chamber, and the collection portion extends obliquely downward from the first edge of the air / water intake port at an acute angle with respect to the direction along the water guide plate. From the second edge of the collection plate and the air intake port, diagonally downward, the water guide plate A second collection plate extending at an obtuse angle with respect to the direction along the surface, a surface disposed away from the lower end of the first collection plate and facing the direction in which the first collection plate extends, and a second collection plate A third collection plate having an upper end edge facing the plate and spaced apart from the second collection plate, and surrounded by the first, second and third collection plates in the collection portion The coating mist-containing gas is caused to collide with the first, second, and third collecting plates to form a swirling flow of the coating mist-containing gas in the region, and the coating mist and the gas are separated.

  According to the present disclosure, it is possible to provide a paint mist collection device that increases collection efficiency and reduces the cost of water to be used.

The block diagram which shows the whole coating mist collection apparatus of Embodiment 1 of this indication The expansion perspective view of the collection part in the painting mist repair apparatus of Embodiment 1 Schematic explanatory diagram of the flow of air and cleaning water in the collection part of the first embodiment The block diagram which shows the whole coating mist collection apparatus of Embodiment 2 of this indication The expansion perspective view of the collection part in the painting mist repair apparatus of Embodiment 2 Front view of collection part of embodiment 2 The figure which shows the flow of the air in the collection part of Embodiment 2. The block diagram which shows the whole coating mist collection apparatus of Embodiment 3 of this indication The expansion perspective view of the collection part in the painting mist repair apparatus of Embodiment 3 Front view of collection part of embodiment 3 The block diagram which shows the whole coating mist collection apparatus of Embodiment 4 of this indication The perspective view of the coating mist collection apparatus of Embodiment 4 The expansion perspective view of the collection part in the painting mist repair apparatus of Embodiment 4 Front view of collection part of embodiment 4 The expansion perspective view of the water spray panel in the painting mist repair apparatus of Embodiment 4 Front view of the water storage panel of the fourth embodiment Enlarged perspective view of the water storage panel of the fourth embodiment Configuration diagram showing a conventional wet collection device used in a painting booth

  The coating mist collecting apparatus according to the first aspect of the present disclosure has an air path that passes the coating mist-containing gas sucked from the coating chamber together with the cleaning water and guides it to the collecting chamber. A collecting section that separates the coating mist from the mist-containing gas, a cleaning water supply device that supplies cleaning water on the upstream side of the collecting section, and a first end facing each other in the air / water intake port that is the entrance of the air passage A gas guide plate that has a gradient toward the edge and the second edge, guides the cleaning water supplied from the cleaning water supply device to the air intake port, and the gas guided into the collection chamber through the air passage of the collection unit. An air blower for exhausting, and the trapping portion extends obliquely downward from the first edge of the air / water intake port at an acute angle with respect to the direction along the water guide plate, and the air / water intake port. It extends at an obtuse angle with respect to the direction along the water guide plate obliquely downward from the second edge of the Two collecting plates, a surface disposed away from the lower end of the first collecting plate and facing the direction in which the first collecting plate extends, and facing the second collecting plate and from the second collecting plate A third collecting plate having an upper end edge that is spaced apart, and swirling of the coating mist-containing gas in a region surrounded by the first, second, and third collecting plates in the collecting portion While forming a flow, the coating mist-containing gas is collided with the first, second and third collecting plates to separate the coating mist and the gas. Also, the paint mist and gas separated from each other are introduced into the collection chamber through the gap between the first and second collection plates and the gap between the second and third collection plates. It is burned.

  In the paint mist collecting device according to the second aspect of the present disclosure, in the paint mist collecting device according to the first aspect, the collecting portion is spaced from the upper end of the second collecting plate and the second collecting plate extends. And a fourth collecting plate having a lower surface edge that faces the first collecting plate and is spaced apart from the first collecting plate.

  The painted mist collecting device of the third aspect of the present disclosure is the painted mist collecting device of the second aspect, wherein each of the collecting plates of the collecting unit has an edge toward the adjacent collecting plate. It has a bent part or a curved part which goes to the area | region enclosed by the current collector.

  The paint mist collection device of the 4th mode of this indication is the cylinder which makes an axial direction a horizontal direction in the center of the field surrounded by each collection board in the paint mist collection device of the 2nd or 3rd mode. A member or a cylindrical member is disposed.

  The paint mist collecting apparatus according to the fifth aspect of the present disclosure is the paint mist collecting apparatus according to any one of the second to fourth aspects, wherein a plurality of collecting parts are arranged in the vertical direction or the horizontal direction, and adjacent to each other. At least one collecting plate is shared in the collecting section.

  A paint mist collecting apparatus according to a sixth aspect of the present disclosure is the paint mist collecting apparatus according to any one of the first to fifth aspects. The paint mist collecting apparatus has a plurality of openings and is arranged to cover the air / water intake port. A wall on the cylinder having an upper edge higher than the panel and a lower edge lower than the panel, along the inner edge of each opening in the panel It is provided, and a plurality of protrusions are provided along the lower edge of the wall.

  Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 illustrates a paint mist collecting apparatus according to a first embodiment of the present disclosure. In the painting booth 1 which is a painting room, the object 4 is painted by the painting mist 3 sprayed by the painting robot 2. The paint mist 3 that cannot adhere to the object 4 is called overmist and floats in the air. In this state where the overmist drifts, the coating mist 3 drifting in the air adheres to the object 4 to be coated next, and the coating quality is lowered. Therefore, air that has been air-conditioned, ventilated, and purified to some extent is sent into the painting booth 1 from the ceiling downward. The air containing the coating mist 3 (hereinafter referred to as “paint mist-containing gas”) is sucked into the coating mist collecting device 7 through the air / water intake port 6 installed below the grating 5. Thus, the paint mist 3 drifting in the air is quickly discharged from the paint booth 1. In FIG. 1, the flow of air (including the paint mist-containing gas) is indicated by reference numeral 8, and the flow of water (washing water) is indicated by reference numeral 9.

  The configuration of the paint mist collecting device 7 of the first embodiment will be specifically described. The painting mist collection device 7 includes a collection unit 10, a cleaning water supply device 30, a first water guide plate 16, a second water guide plate 17, a collection chamber 23, and a blower 11. In addition, the coating mist collection apparatus 7 of this Embodiment 1 is a wet processing apparatus.

  The collection unit 10 has an air passage 24 that guides the coating mist-containing gas sucked from the coating booth 1 together with the cleaning water and leads it to the collection chamber 23, and allows the coating mist-containing gas to pass through the air passage 24. Has the function of separating paint mist. The inlet (upper side opening in FIG. 1) of the air passage 24 serves as an air / water intake 6 for taking in the paint mist-containing gas from the paint booth 1 and the wash water 14 supplied from the wash water supply device 30. Yes. In addition, the detailed structure of the collection part 10 is mentioned later.

  The washing water supply device 30 includes a washing water tank 18 provided in the collection chamber 23, and a pump 20 that draws up the washing water 14 in the washing water tank 18 and supplies it to the upstream side of the collection unit 10. Further, the cleaning water supply device 30 includes a water storage tank 15 that stores the cleaning water 14 supplied by the pump 20, overflows the stored cleaning water, and supplies the cleaning water 14 toward the air-water intake port 6. The cleaning water supply device 30 supplies the cleaning water 14 to the air-water intake port 6 on the upstream side of the collection unit 10.

  The washing water tank 18 is a water tank for storing and collecting the washing water 14 introduced into the collection chamber 23 and taking in the paint mist. A flocculant is introduced into the washing water tank 18, and the coating mist contained in the washing water 14 is aggregated to become sludge. The pump 20 is connected to the cleaning water tank 18 and the water storage tank 15 through a pipe. A separation device 19 is provided between the washing water tank 18 and the pump 20, and the separation device 19 separates the washing water 14 and the sludge. As a result, the pump 20 can supply the wash water 14 with the paint content reduced to the water tank 15.

  The collection chamber 23 has an internal space defined by a side wall, a bottom portion, and an upper wall. The upper wall of the collection chamber 23 is constituted by, for example, a water storage tank 15 and a first water guide plate 16. The water storage tank 15 is arrange | positioned at the left-right edge side of FIG. The first water guide plate 16 has a gradient descending from the upper end of each water storage tank 15 toward the air / water intake port 6 disposed on the center side of the coating mist collecting device 7. With such a configuration, the wash water 14 overflowed in the water storage tank 15 can be guided to the air / water intake port 6 by the gradient of each first water guide plate 16. That is, the first water guide plate 16 guides the cleaning water 14 supplied from the cleaning water supply device 30 to the air / water intake port 6.

  In the collection chamber 23, a second water guide plate 17 is provided at the outlet of the air passage 24. The second water guide plate 17 guides the wash water 14 flowing out from the outlet of the air passage 24 to the wash water tank 18 disposed at the bottom of the collection chamber 23.

  In the collection chamber 23, a plurality of baffle plates 21 arranged in a direction intersecting with the entire air flow direction are arranged between the outlet of the air passage 24 and the suction port of the blower 11. Yes. Since the air collides with these baffle plates 21, the cleaning water 14 remaining in the air is removed and dropped. Below each baffle plate 21, a third water guide plate 22 that guides the dropped cleaning water 14 to the cleaning water tank 18 is provided.

  The blower 11 blows air so that the air from which the washing water has been removed by the plurality of baffle plates 21 is discharged out of the collection chamber 23 and returned to the painting booth 1. Further, the capacity of the blower 11 and the resistance (pressure loss) of the suction path including the air path 24 and the like are set so that a predetermined suction force acts on the upstream side of the air / water intake port 6 through the air path 24. . An air conditioner filter 26 and an air conditioner 27 that adjusts the passing air to a predetermined temperature and humidity are provided on the upstream side of the blower 11. Therefore, after the air from which the washing water has been removed by the plurality of baffle plates 21 passes through the air conditioner filter 26 and the air conditioner 27 and is adjusted to a predetermined temperature and humidity, it passes through the blower 11 and passes through the painting unit booth 1. Returned in. Further, in order to reduce the concentration of solvent gas in the air, an air supply / exhaust port 28 for replacing a part of the air is provided in the vicinity of the air conditioner 27.

  Next, the detailed structure of the collection part 10 is demonstrated. An enlarged perspective view of the collection unit 10 is shown in FIG. 2, and a schematic explanatory view of the flow of air and washing water in the collection unit 10 is shown in FIG.

  As shown in FIGS. 2 and 3, in the collection unit 10, the left side of the air / water intake port 6 that is the entrance of the air passage 24 is the first end edge 6 a and the right side is the second end edge 6 b. . The first edge 6a and the second edge 6b are opposed to each other, one of the first water guide plates 16 is connected to the first edge 6a, and the other first water guide plate 16 is connected to the second edge 6b. It is connected.

  The collection unit 10 has a function of guiding the flow of the paint mist-containing gas and a function of collecting the paint by separating the paint mist and air by colliding the paint mist-containing gas with the surface thereof. A collection plate is provided. In the collection unit 10 of the first embodiment, for example, four collection plates include a first collection plate 31, a second collection plate 32, a third collection plate 33, and a fourth collection plate. 34 is provided.

  One end (upper end edge) of the first collecting plate 31 is connected to the first end edge 6 a of the air / water intake port 6, and the direction from the first end edge 6 a to the surface of the first water guide plate 16. It is arranged so as to extend obliquely downward (obliquely rightward in FIG. 3) at an acute angle θ1. One end (upper edge) of the second collection plate 32 is connected to the second end edge 6 b of the air / water intake port 6, and the direction from the second end edge 6 b to the surface of the first water guide plate 16. They are arranged so as to extend obliquely downward (obliquely rightward in FIG. 3) at an obtuse angle θ2. In the first embodiment, the first collection plate 31 and the second collection plate 32 are arranged to extend in the same direction with the same length (that is, in parallel with each other). The other end (lower end edge) of the second collection plate 32 is connected to the second water guide plate 17.

  The third collection plate 33 has a surface that is spaced from the other end (lower end edge) of the first collection plate 31 and faces the direction in which the first collection plate 31 extends. That is, the third collection plate 33 is arranged so as to intersect the direction in which the first collection plate 31 extends while being separated from the first collection plate 31 (the direction in which the first collection plate 31 extends). Arranged to block). Further, the third collection plate 33 is disposed such that an upper end, which is one end thereof, faces the second collection plate 32 and is separated from the second collection plate 32. That is, the third collection plate 33 is disposed so as to extend in a direction intersecting with the direction in which the second collection plate 32 extends (in the diagonally lower left direction in FIG. 3).

  The fourth collection plate 34 has a surface that is separated from the other end (upper end) of the second collection plate 32 and faces the direction in which the second collection plate 32 extends. In other words, the fourth collection plate 34 is disposed so as to intersect the direction in which the second collection plate 32 extends while being separated from the second collection plate 32 (the direction in which the second collection plate 32 extends is blocked). Arranged). Furthermore, the lower end, which is one end of the fourth collection plate 34, faces the first collection plate 31 and is spaced from the first collection plate 31. That is, the fourth collection plate 34 is disposed so as to extend in a direction intersecting with the direction in which the first collection plate 31 extends (diagonal left lower direction in FIG. 3). In the first embodiment, the third collection plate 33 and the fourth collection plate 34 are arranged so as to extend in the same direction (that is, parallel to each other).

  In the collection part 10 of this Embodiment 1, it coats, forming the swirl | vortex flow F of the coating mist containing gas in the area | region R of substantially rhombus shape in the side view enclosed by the four collection plates 31-34. The mist-containing gas is caused to collide with the respective collecting plates 31 to 34 to separate the coating mist from the air.

  Operation | movement of the coating mist collection apparatus 7 of this Embodiment 1 which has such a structure is demonstrated.

  First, by driving the blower 11, the air in the collection chamber 23 is exhausted, and a suction force acts on the upstream side of the air / water intake port 6 through the air passage 24. Thereby, the coating mist-containing gas is sucked into the air / water intake port 6 through the grating 5.

  Specifically, as shown in FIG. 3, in the collection unit 10, a gap (slit) 35 between the first collection plate 31 and the fourth collection plate 34, the second collection plate 32, and the second collection plate 10. The coating mist-containing gas is taken into the region R through the gap (slit) 35 between the four collecting plates 34. The coating mist-containing gas taken in along the surface of the first collection plate 31 collides with the surface of the third collection plate 33, and the downward flow and the upward flow along the surface of the third collection plate 33. And divided. The upward flow along the third collection plate 33 collides with the surface of the second collection plate 32 and is divided into a downward flow and an upward flow along the surface of the second collection plate 32. The coating mist-containing gas taken in along the surface of the fourth collection plate 34 collides with the surface of the first collection plate 31 and merges with the coating mist-containing gas taken in along the first collection plate 31. After that, it collides with the third collecting plate 33.

  In the region R of the collection unit 10, the collision with the collection plates 31 to 34 and the branching of the flow are repeated, whereby a swirling flow F having the horizontal direction as the central direction is formed. By forming such a swirl flow F, the collision between the coating mist-containing gas and the respective collecting plates 31 to 34 is repeated. When the coating mist-containing gas collides with the collecting plates 31 to 34, the coating mist is collected on the surfaces of the collecting plates 31 to 34, and the coating mist and air (gas) are separated. Moreover, since the swirl | vortex flow F is formed in the area | region R, the collision (or contact) opportunity of the coating mist containing gas and the collection plates 31-34 can be increased, and collection efficiency improves. Further, due to the action of the centrifugal force generated by the swirl flow F, the coating mist easily comes into contact with the respective collecting plates 31 to 34 in the coating mist-containing gas. The air from which the coating mist is separated is a gap (slit) 35 between the first collection plate 31 and the third collection plate 33, and between the second collection plate 32 and the third collection plate 33. It is guided into the collection chamber 23 through a gap (slit) 35.

  On the other hand, the wash water 14 guided to the air intake port 6 by the respective first water guide plates 16 is sucked into the collection unit 10 or falls due to the action of gravity, and the respective collection plates 31 to 34. Wash away the paint mist collected on the surface. The cleaning water 14 containing the coating mist further flows downward and is guided to the cleaning water tank 18 by the second water guide plate 17. In addition, although some washing water 14 flows also in the direction which resisted gravity by the action of swirl flow F, such washing water 14 takes in paint mist while washing the surface of collection plates 31-34, Eventually it flows down. In FIG. 3, the flow 8 of the coating mist-containing gas or air is indicated by a solid arrow, and the flow 9 of the cleaning water is indicated by a dotted arrow.

  The wash water 14 contained in the air taken into the collection chamber 23 is removed by the respective baffle plates 21, and the air from which the wash water 14 has been removed is discharged to the outside of the apparatus by the blower 11. The cleaning water 14 removed by the baffle plate 21 falls and is guided to the cleaning water tank 18 by the third water guide plate 22.

  In the washing water tank 18, the coating mist is aggregated into sludge by the addition of the flocculant. Thereafter, the cleaning water 14 including the sludge passes through the separation device 19, so that the sludge is separated and collected, and the cleaning water 14 from which the sludge has been removed is sent back to the water storage tank 15 by the pump 20.

  According to the coating mist collecting device 7 of the first embodiment, the region R in which the swirling flow F surrounded by the plurality of collecting plates 31 to 34 is formed is provided, and the coating mist-containing gas and the collecting plate 31 are provided. By repeating the collision with .about.34, separation of the coating mist and air and collection of the coating mist are performed. Thus, by forming the swirl | vortex flow F in the area | region R, the collision (or contact) opportunity of the coating mist containing gas and the collection plates 31-34 can be increased, and collection efficiency improves.

  Also, the paint mist is not directly collected by the washing water by mixing the paint mist-containing gas and the washing water, but by the collision between the painting mist-containing gas and the collecting plates 31 to 34. We are collecting. The washing water is used to wash out the surfaces of the collecting plates 31 to 34. Therefore, the amount of washing water to be used may be an amount necessary for washing the collecting plates 31 to 34, and the washing water is made small compared to the case where the coating mist is collected directly by the washing water. be able to. Further, since the amount of washing water is small, the amount of the flocculant used can be small.

  Moreover, since the amount of washing water used can be reduced, it is possible to suppress a significant increase in the humidity of the air after collecting the paint mist, compared to the case where a large amount of washing water is used. . Therefore, in the apparatus configuration including the air conditioner 27 that returns the conditioned air that has collected the paint mist to the painting booth 1 like the painting mist collecting apparatus 7, the air conditioning cost can be reduced.

  Therefore, it is possible to provide a paint mist collecting device that can increase the collection efficiency and reduce the amount of use and cost of the cleaning water. Moreover, when the coating mist collection device has an apparatus configuration including an air conditioner, the air conditioning cost can be reduced.

(Embodiment 2)
FIG. 4 shows a paint mist collecting device 107 according to the second embodiment of the present disclosure. Moreover, the enlarged perspective view of the collection part 110 in the coating mist collection apparatus 107 is shown in FIG. 5, and the front view of the collection part 110 is shown in FIG. In the paint mist collecting device 107 according to the second embodiment, the same reference numerals are given to the same components as those in the paint mist collecting device 7 according to the first embodiment, and the description thereof is omitted. Hereinafter, differences between the two will be described.

  As shown in FIGS. 4 to 6, in the coating mist collecting device 107, the region R where the swirling flow is formed by the four collecting plates is the same as in the first embodiment. The shape of the collecting plate is different. The first to fourth collecting plates 131 to 134 included in the coating mist collecting device 107 are arranged on the edge of the swirl flow F in the direction side, that is, on the surface of another adjacent collecting plate in one collecting plate. Curved portions 131a, 132a, 133a, and 134a are formed at the edge on the opposite side. The curved portions 131a to 134a are formed so as to go into the region R.

  Thus, by forming the curved portions 131a to 134a in the respective collecting plates 131 to 134, the collecting mist-containing gas can be made to follow the direction of the swirl flow F by the collecting plates 131 to 134. A strong swirl F can be formed. Therefore, the collision / contact opportunity between the coating mist-containing gas and each of the collection plates 131 to 134 can be increased, and the collection efficiency of the coating mist can be increased.

  In addition, you may make it form the stronger swirl | vortex flow F by forming the area | region R which draws circular by each curved part 131a-134a. Further, instead of the curved portion, a strong swirl flow F may be formed by forming a bent portion that goes into the region R. Further, instead of forming a curved portion or a bent portion on all the collecting plates, a curved portion or a bent portion may be formed on a part of the collecting plates.

  Here, in order to verify whether or not the swirl flow F is formed in the region R surrounded by the respective collection plates 131 to 134 in the collection unit 110, fluid analysis using a finite element method is performed. It was. The result of the fluid analysis is shown in FIG.

  As shown in FIG. 7, the gas (paint mist-containing gas) is introduced from the upper side of the collection unit 110 and flows substantially downward while being guided by the respective collection plates 131 to 134. In the region R, the gas flowing along the first collection plate 131 flows downward along the third collection plate 133, while flowing upward along the third collection plate 133. I understand that. Moreover, also in the 2nd collection board 132 and the 4th collection board 134, the gas flow along each collection board is formed. Due to these gas flows, a swirling flow F having a swirling center in the horizontal direction is formed. Thus, the result that the swirl flow F was formed in the region R surrounded by the collecting plates 131 to 134 was obtained from the fluid analysis using the finite element method.

(Embodiment 3)
FIG. 8 shows a paint mist collecting device 207 according to the third embodiment of the present disclosure. Moreover, the enlarged perspective view of the collection part 210 in the coating mist collection apparatus 207 is shown in FIG. 9, and the front view of the collection part 210 is shown in FIG. In the paint mist collecting device 207 of the third embodiment, the same reference numerals are assigned to the same components as those of the paint mist collecting device 107 of the second embodiment, and the description thereof is omitted. Hereinafter, differences between the two will be described.

  As shown in FIGS. 8 to 10, in the coating mist collecting device 207, a region R surrounded by four collecting plates 131 to 134 having curved portions 131a to 134a is formed in the second embodiment. And in common. In the coating mist collecting device 207 of the third embodiment, a cylindrical member 25 having an axial direction as a horizontal direction is disposed in the center of the region R.

  In such a configuration, a space surrounded by the outer peripheral surface of the cylindrical member 25 and the respective collecting plates 131 to 134 is a region R, and a swirling flow F is formed in the region R. Since the cylindrical member 25 is arranged in the center of the region R, a stronger swirl flow F can be formed. Therefore, the collision / contact opportunity between the coating mist-containing gas and each of the collection plates 131 to 134 can be increased, and the collection efficiency of the coating mist can be increased. Note that a columnar member may be arranged instead of the cylindrical member 25.

(Embodiment 4)
FIG. 11 shows a front view of a paint mist repair device 307 according to the fourth embodiment of the present disclosure, and FIG. 12 shows a partial perspective view thereof. In the paint mist collecting device 307 of the fourth embodiment, the same reference numerals are assigned to the same components as those of the paint mist collecting devices 7, 107, and 207 of the first to third embodiments, and the description thereof is omitted. . Hereinafter, differences between the two will be described.

  The coating mist collecting device 307 of the fourth embodiment is different from the above-described embodiment in that it includes a collecting unit group 312 in which a plurality of collecting units 310 are arranged in the vertical direction and the horizontal direction. . Here, the enlarged perspective view of the collection part group 312 in the coating mist collection apparatus 307 is shown in FIG. 13, and the front view of the collection part group 312 is shown in FIG.

  As shown in FIG. 10, in the collection unit group 312, for example, four collection units 310 in the horizontal direction and three collection units 310 in the vertical direction are arranged. Further, at least one collecting plate 335 is shared by adjacent collecting units 310. Further, a portion surrounded by two collection units 310 adjacent in the horizontal direction and two collection units 310 adjacent in the vertical direction (that is, 2 × 2 collection units 310) is also surrounded by the collection plate 335. A region R is formed. A cylindrical member 326 is disposed in each region R.

  In such a collection unit group 312, the collection plates 335 can be shared between adjacent collection units 310, and 18 collection units 310 are configured using a total of 31 collection plates 335. Can be configured. By arranging the plurality of collecting portions 310 in the horizontal direction, the amount of the coating mist-containing gas can be increased. Moreover, the collection efficiency of a coating mist can be improved by arranging the some collection part 310 in a perpendicular direction.

  In a configuration in which a plurality of collection units 310 are arranged in the horizontal direction, it is difficult to uniformly supply cleaning water to all the collection units 310 through the air / water intake port 6, and the collection unit group 312 is washed. It becomes difficult to do. Therefore, in the paint mist collection device 307 of the fourth embodiment, the water storage panel 350 (panel) is provided in the air intake port 6 so that the cleaning water is supplied evenly to the respective collection units 310. ing. A perspective view from the upper (front) side of the water storage panel 350 is shown in FIG. 15, and a perspective view from the lower (back) side is shown in FIG. Moreover, the front view of the water storage panel 350 is shown in FIG.

  As shown in FIGS. 15 to 17, the water storage panel 350 is a plate-like member, and the peripheral edge thereof is an edge of the air / water intake port 6 (that is, the first edge 6 a and the second edge 6 b). It is installed so as to cover the air / water intake port 6 by being supported above.

  The water storage panel 350 is provided with a plurality of panel openings 351 (openings) arranged in the axial direction of the cylindrical member 326. Each panel opening 351 is formed, for example, as an opening extending from a position above the collecting portion 310 on one end side arranged in the horizontal direction to a position above the collecting portion 310 on the other end side. ing. Further, a cylindrical wall (in this example, on a rectangular cylinder or a rectangular frame) arranged along the inner edge of the panel opening 351 is fixed to each panel opening 351 while passing through the panel opening 351. ing. The wall 352 has an upper edge at a position higher than the panel opening 351, and a lower edge at a position lower than the panel opening 351. Further, a plurality of triangular protrusions 353 (or triangular cutouts) formed continuously at an equal interval pitch are provided on the upper edge of the wall 352. On the lower edge of the wall 352, a plurality of triangular protrusions 354 are provided that are continuously formed at equal intervals.

  When the cleaning water is supplied from the water storage tank 15 through the first water guide plate 16 to the water storage panel 350, the cleaning water 14 is stored by the upper edge of the wall 352 of the water storage panel 350. Further, the cleaning water 14 flows down from the entire upper edge into the panel opening 351 so as to exceed the upper edge of the wall 352 by supplying the cleaning water. The wash water that has flowed down travels along the inside of the cylindrical wall 352, reaches the lower edge, and falls like a drop from a triangular protrusion 354 provided on the lower edge. Since the triangular protrusions 354 are evenly provided on the lower edge of the wall 352, the cleaning water uniformly drops toward the respective collecting portions 310. Further, since the triangular projections 353 are evenly provided on the upper edge of the wall 352, the cleaning water is in a uniform state with respect to the entire panel opening 351 even when the upper edge of the wall 352 is exceeded. Will be exceeded. Therefore, by using the water storage panel 350, the cleaning water can be uniformly supplied to the collection unit group 312 and the cleaning property of the entire collection unit group 312 can be improved.

  Such a storage water spray panel 350 is not only a collection unit group provided with a plurality of collection units, but also a paint mist collection device having only one collection unit (for example, in the first embodiment). You may apply to the coating mist collection apparatus 7 grade | etc.,).

  Although the projections 353 and 354 provided on the upper edge and the lower edge of the wall 352 are triangular, the present invention is not limited thereto. What is necessary is just to comprise the regular uneven | corrugated shape of an edge part by the several processus | protrusion formed by the equal spacing pitch continuously. Moreover, such a protrusion should just be formed in the lower edge of the wall 352 at least.

  In the description of the above-described embodiment, the case where the separation / collection process for the coating mist-containing gas is performed by forming the swirling flow in the region surrounded by the plurality of collection plates has been described. Three or more collecting plates are preferably provided so that an enclosed region can be formed, and four or more collecting plates may be provided.

  Further, the swirl flow may rotate 360 degrees, or rotate less than 360 degrees. In the region R, it is only necessary that the flow in the swirl direction is formed at least partially.

  In addition to the configuration in which the cleaning water is supplied by overflowing from the water storage tank 15, the cleaning water may be additionally supplied by other means to improve the cleaning performance of the surface of the collecting plate. .

  In the paint mist collection device of the present disclosure, it is possible to reduce the amount of water used and suppress humidification by using a small amount of washing water only for the purpose of washing the collection unit. On the other hand, the flow rate of the cleaning water may be increased when the purpose is to increase the collection efficiency of the paint mist without seeking to suppress humidification or reduce the amount of water used. By increasing the flow rate of the washing water, it is possible to obtain a high air-water mixing effect by ejecting water and gas vigorously in the gap (slit) between the collection plate and the collection plate in the collection unit. And higher collection efficiency can be achieved.

  Therefore, it is possible to obtain the effect according to the purpose by adjusting the flow rate of the cleaning water according to the purpose. When the purpose is to suppress humidification and reduce the amount of water, the collection plate may be washed by reducing the flow rate of water to suppress the air-water mixing effect. If the objective is only to increase the collection efficiency without seeking other effects, the cleaning plate is washed by increasing the flow rate of the wash water, and the air / water mixing effect is enhanced to improve the collection efficiency of the paint mist. You may make it raise.

  It is to be noted that, by appropriately combining any of the above-described various embodiments, the effects possessed by them can be produced.

  The paint mist collection device concerning this indication can raise the collection efficiency to paint mist. Moreover, since the usage-amount of water required for collection can be reduced, the usage cost of water can be reduced. In the case where the coating mist collecting apparatus has an apparatus configuration including an air conditioner, the air conditioning cost can be reduced. Therefore, it is useful as an apparatus that can improve the quality of the painting process of automobiles and home appliances and at the same time reduce the operating cost of the painting process.

DESCRIPTION OF SYMBOLS 1 Paint booth 2 Paint robot 3 Paint mist 4 Object 5 Grating 6 Air-water intake 7 Paint mist collection device 8 Air flow 9 Water flow 10 Collection part 11 Blower 14 Washing water 15 Water tank 16 1st water guide plate 17 Second water guide plate 18 Washing water tank 19 Separating device 20 Pump 21 Baffle plate 22 Third water guide plate 23 Collection chamber 24 Air passage 25 Cylindrical member 26 Air conditioner filter 27 Air conditioner 28 Air supply / exhaust port 30 Washing water supply device 31 1 collection plate 32 2nd collection plate 33 3rd collection plate 34 4th collection plate 35 Crevice (slit)
350 Water Storage Panel 351 Panel Opening 352 Wall 353, 354 Protrusion R Region F Swirl

Claims (6)

A collecting section that separates the coating mist from the coating mist-containing gas by passing the air passage through the air passage that passes the coating mist-containing gas sucked from the coating chamber with the cleaning water and leads to the collection chamber;
A cleaning water supply device that supplies cleaning water upstream of the collection unit;
A water guide plate having a gradient toward the first end edge and the second end edge facing each other in the air / water intake port which is the entrance of the air passage, and guiding the wash water supplied from the wash water supply device to the air / water intake port; ,
A blower that exhausts the gas guided into the collection chamber through the air passage of the collection unit, and
The collection part
A first collection plate extending at an acute angle with respect to the direction along the water guide plate obliquely downward from the first edge of the air-water intake port;
A second collecting plate extending obliquely downward from the second edge of the air water intake port at an obtuse angle with respect to the surface of the water guide plate;
A surface arranged away from the lower end of the first collection plate and facing the direction in which the first collection plate extends, and arranged facing the second collection plate and away from the second collection plate A third collecting plate having an upper edge,
In the collection part, the coating mist-containing gas is collected in the first, second, and third collection while forming a swirling flow of the coating mist-containing gas in the region surrounded by the first, second, and third collection plates. A paint mist collector that separates paint mist and gas by colliding with a plate.   The collection part is spaced from the upper end of the second collection plate and is disposed so as to face the direction in which the second collection plate extends, and is directed to the first collection plate and away from the first collection plate. The coating mist collection apparatus of Claim 1 provided with the 4th collection board which has a lower end edge arrange | positioned.   3. Each collecting plate of the collecting part has a bent portion or a curved portion such that an edge toward the adjacent collecting plate is directed into a region surrounded by each collecting plate. Paint mist collection device.   The paint mist collecting device according to claim 2 or 3, wherein a columnar member or a cylindrical member having an axial direction as a horizontal direction is arranged in the center of a region surrounded by each collecting plate.   The coating mist collection according to any one of claims 2 to 4, wherein a plurality of collection units are arranged in a vertical direction or a horizontal direction, and at least one collection plate is shared in adjacent collection units. apparatus. A panel having a plurality of openings and further arranged to cover the air-water intake port,
A wall on the cylinder having an upper edge at a position higher than the panel and a lower edge at a position lower than the panel is provided along the inner edge of each opening in the panel,
The coating mist collection device according to any one of claims 1 to 5, wherein a plurality of protrusions are provided along a lower edge of the wall.

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