JP2024028136A - Painting equipment and filter module - Google Patents

Abstract

An object of the present invention is to realize a coating device that can form a correct sealing state at both an inlet and an outlet, regardless of the positional relationship between the inlet and the outlet. [Solution] A painting booth has an upper tank in which painting work is performed, a lower tank arranged below the upper tank, a receiving part 2 that receives air discharged from the painting booth, and a receiving part 2. filter sections 31 and 32 that capture paint mist from the air that has passed through the filter sections 31 and 32, a filter inlet section 33 into which air flows from the receiving section 2, and a filter outlet section 34 that discharges the air in which paint mist has been captured by the filter sections 31 and 32. The filter module 3 is provided with a filter module 3 that is detachable from the receiving part 2, and a rail 6 that guides the filter module 3 to a mounting position where the filter module 3 is mounted on the receiving part 2. It has floor running wheels 35 for running on a lower floor surface than the above surface, and rail running wheels 36 for running on the rails 6. [Selection diagram] Figure 2

Description

The present invention relates to a coating apparatus including a filter unit connected to the side of a lower tank of a coating booth, and a filter module installed in the coating apparatus.

In a painting booth that paints objects to be painted, such as car bodies, exhaust gas containing paint mist that has not adhered to the objects to be painted is generated. For this reason, paint booths are equipped with filters to capture paint mist contained in the exhaust gas.

Filter elements made of relatively inexpensive materials such as cardboard are used disposable. Japanese Patent Publication No. 2016-538118 (Patent Document 1) and Japanese Patent Application Publication No. 2014-527462 (Patent Document 2) disclose devices that install disposable filters under the floor of a painting booth. This is because exhaust gas containing paint mist is heavier than air, so it is effective to guide the paint mist under the floor using gravity and trap it there.

Special Publication No. 2016-538118 (or International Publication No. 2015/062976) Special Publication No. 2014-527462 (or International Publication No. 2013/013780)

In the inventions of Patent Documents 1 and 2, an inlet through which air flows into the filter unit and an outlet through which air flows out from the filter unit are provided on the same surface of the filter unit. Therefore, it was sufficient to connect a flow path such as a duct on one surface where an inlet and an outlet were provided, and it was easy to ensure sealing performance. On the other hand, since the inlet and the outlet are arranged on the same surface, it is difficult to increase the flow rate of air.

Therefore, in order to increase the flow rate of air, a filter unit in which an air inlet and an air outlet are provided on different surfaces is being considered. In this case, since it is necessary to join other components on at least two surfaces, it is necessary to ensure sealing performance on these two surfaces at the same time. Here, when the filter unit moves on the floor surface, it is difficult to ensure the flatness of the floor, and it is difficult to accurately adjust the angle between the joint surfaces and the height direction position of the joint surface on the filter unit side. There were times when it was difficult. Therefore, it is necessary to accurately guide the filter unit to achieve an installation posture that will form a correct sealing state with respect to the mating partners at both the inlet and the outlet.

The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a coating device that can form a correct sealing state at both the inlet and the outlet, regardless of the positional relationship between the inlet and the outlet.

A painting apparatus according to the present invention includes a painting booth having an upper tank in which painting work is performed, a lower tank disposed below the upper tank, and a receiving part that receives air discharged from the painting booth. , a filter section that captures paint mist from the air that has passed through the receiving section, a filter inlet section into which air flows from the receiving section, and a filter outlet section that discharges the air in which the paint mist has been captured by the filter section. , a filter module that is detachable from the receiving part, and a rail that guides the filter module to a mounting position where the filter module is mounted to the receiving part, and the filter module is lower than the surface on which the painting booth is installed. The vehicle is characterized by having floor running wheels for running on the floor and rail running wheels for running on the rails.

According to the present invention, a correct sealing state can be formed at both the inlet and the outlet, regardless of the positional relationship between the inlet and the outlet.

Further features and advantages of the invention will become clearer from the following description of exemplary and non-limiting embodiments, written with reference to the drawings.

FIG. 1 is a diagram showing a coating device according to a first embodiment. FIG. 6 is a diagram showing movements when attaching and detaching the filter module according to the first embodiment. FIG. 6 is a diagram showing movements when attaching and detaching the filter module according to the first embodiment. FIG. 6 is a diagram showing movements when attaching and detaching the filter module according to the first embodiment. It is a figure showing the usage state of the filter unit concerning a 1st embodiment. FIG. 3 is a partially enlarged view of the filter unit according to the first embodiment. FIG. 3 is a top perspective view showing the arrangement of wheels of the filter module according to the first embodiment. It is a figure showing the usage state of the filter unit concerning a 2nd embodiment. It is a figure showing the state where the filter module concerning a 2nd embodiment was removed.

Embodiments of a coating device and a filter module according to the present invention will be described with reference to the drawings. An example in which the present invention is applied to a coating apparatus 100 including a coating booth 10 and a filter unit 1 connected to the coating booth 10 will be described below.

[First embodiment]
(Configuration of painting equipment and painting booth)
The coating apparatus 100 includes a coating booth 10 , a filter unit 1 , an inflow duct 4 , an exhaust duct 5 (an example of an exhaust section), and a rail 6 . The painting booth 10 includes an upper tank 10a arranged above the grating floor 12 in which painting work is performed by the coating device 11, and a lower tank 10b arranged below the grating floor 12 and connected to the filter unit 1. (Figure 1). A downward airflow is formed in the coating booth 10 from above to below, and air containing paint that has not adhered to the object to be coated is guided from the upper tank 10a to the lower tank 10b.

The painting booth 10 is a so-called low-floor painting booth, and the height from the surface on which the painting booth 10 is installed to the grating floor 12 is lower than that of conventional painting booths. Along with this, the height of the lower tank 10b has become lower than in the past. In this embodiment, the height of the lower tank 10b from the floor is 1200 mm. The height of the lower tank 10b can be appropriately set in consideration of circumstances such as the installation location. Note that the dimensions described for other parts are also merely illustrative to aid understanding of the embodiment.

(Filter unit configuration)
The filter unit 1 according to this embodiment includes a front chamber 2 (which is an example of a receiving section) and a filter module 3 (FIG. 1). 2 to 4 show the movement when attaching and detaching the filter module 3 of the filter unit 1, and FIG. 5 shows the state in which the filter unit 1 is used (the state in which the filter module 3 is attached).

Air discharged from the lower tank 10b of the coating booth 10 enters the front chamber 2 via the inflow duct 4 and is then guided to the filter module 3. The paint is adsorbed in the filter module 3 and the purified air is discharged to the outside of the coating apparatus 100 through the discharge duct 5. As described later, the filter module 3 is a box-shaped member that accommodates a plurality of filter elements 31 and a plurality of bag filters 32.

In this embodiment, the height of the lower tank 10b is lower than that of the conventional one. Here, if the height of the filter module 3 is made equal to the height of the lower tank 10b, the number of filter elements 31 installed in the filter module 3 will be reduced compared to the conventional one, and the filtration capacity of the filter module 3 will be insufficient. There is a risk. Therefore, the filter module 3 (particularly the number of filter elements 31) needs to be designed according to the required filtration capacity, regardless of the height of the lower tank 10b. In the configuration in which the lower tank 10b and the filter module 3 whose height is higher than the lower tank 10b are connected, the lower tank 10b and the filter module 3 are not directly connected, but the height of the lower tank 10b and the filter module 3 is A front chamber 2 is provided in the filter unit 1 as a part for adjusting the difference between the two. Note that the front chamber 2 and the filter module 3 may be provided in a one-to-one relationship, or a common front chamber 2 may be provided that is connected to a plurality of filter modules. In the latter case, the front chamber 2 expands in the depth direction of the plane of FIG.

The front chamber 2 has a front chamber inlet 21 through which air flows into the front chamber 2 from the lower tank 10b, and a front chamber outlet 22 through which air flows out from the front chamber 2 to the filter module 3. The front chamber inlet 21 is fixedly connected to the inflow duct 4 . The front chamber outlet 22 is detachably connected to the filter module 3. The front chamber outlet 22 is provided with a door (not shown) that opens and closes the front chamber outlet 22 .

In this embodiment, the height of the opening of the front chamber inlet 21 is 1000 mm, corresponding to the height of the lower tank 10b. The height of the opening of the front chamber outlet 22 is 2000 mm, which corresponds to the height of the filter module 3. That is, the height of the opening of the front chamber inlet 21 is lower than the height of the opening of the front chamber outlet 22.

The distance between the front chamber inlet 21 and the front chamber outlet 22 is 800 mm, which is 40% of the opening height of the front chamber outlet 22. The distance between the front chamber inlet 21 and the front chamber outlet 22 is the length of the front chamber 2 in the direction of air movement. Since the front chamber 2 has a certain length in the air traveling direction, the air that flows into the front chamber 2 from the front chamber inlet 21 has a certain height before flowing out from the front chamber outlet 22 to the filter module 3. Diffusion in direction. Thereby, air can be distributed to a plurality of filter elements 31 provided in the height direction. In a configuration in which the height of the opening of the front chamber outlet 22 is higher than the height of the opening of the front chamber inlet 21, the distance between the front chamber inlet 21 and the front chamber outlet 22 is defined as the front chamber outlet 22. It is preferable to ensure a length of 20% or more of the height of the opening.

The upper edge 23 of the opening of the front chamber inlet 21 is rounded. Further, the lower edge 24 of the opening of the front chamber inlet 21 is provided with an inclined surface. Both of these rounded surfaces and inclined surfaces serve as a guide portion that guides the air flowing into the front chamber 2 from the inflow duct 4 upward. Since the upper edge 23 and the lower edge 24 function as guide portions, the air that has flowed into the front chamber 2 is easily diffused in the height direction.

The filter module 3 is a box-shaped member that accommodates a plurality of filter elements 31 (an example of a filter section) and a plurality of bag filters 32 (an example of a filter section) (FIG. 5). Note that another filter may be provided between the filter element 31 and the bag filter 32. The filter module 3 also has a filter inlet 33 (which is an example of a filter inlet part) connected to the front chamber 2 and into which air enters from the front chamber 2, and a filter inlet 33 (an example of a filter inlet part) connected to the exhaust duct 5 so that air flows from the filter module 3 into the exhaust duct 5. a filter outlet 34 (which is an example of a filter outlet part), a floor running wheel 35 for running on a floor lower than the surface on which the painting booth 10 is installed, and a rail for running on the rail 6. It has a running wheel 36.

The filter module 3 is detachable from the front chamber 2 . The operation of attaching the filter module 3 to the front chamber 2 is performed by moving the filter module 3 in the direction of the front chamber 2. With this in mind, when referring to the front-rear direction in the following description, the direction in which the filter module 3 approaches the front chamber 2 (the direction from right to left in FIGS. 1 to 5) is defined as "front"; The opposite is defined as "after". Moreover, the position of the filter module 3 when the filter module 3 is installed in the front chamber 2 and the filter unit 1 is in a usable state is referred to as the "installation position."

The filter element 31 is a so-called cardboard filter, and is intended for disposable use. In this embodiment, the filter elements 31 are installed in four stages in the height direction on the side of the filter inlet 33 of the filter module 3. When replacing the filter element 31, with the filter module 3 removed from the front chamber 2, the used filter element 31 is taken out and a new filter element 31 is installed.

The bag filter 32 is, for example, a filter made of olefin fiber. Although the bag filter 32 is also replaced as necessary, its replacement frequency is lower than that of the filter element 31.

The filter inlet 33 is a portion that functions as an inlet for air flowing into the filter module 3 from the coating booth 10 via the front chamber 2, and is provided to open at the front surface of the filter module 3. The filter inlet 33 is aligned with the vestibule outlet 22 of the vestibule 2 when the filter module 3 is in the installed position. In order to airtightly connect the front chamber outlet 22 of the front chamber 2 and the filter inlet 33 of the filter module 3, a packing (not shown) is attached to the edge of the filter inlet 33.

The filter outlet 34 is a portion that functions as an outlet for air discharged from the filter module 3 to the exhaust duct 5, and is provided to open on the upper surface of the filter module 3. The filter outlet 34 is aligned with the exhaust duct 5 when the filter module 3 is in the installed position. The filter outlet 34 is aligned with the exhaust duct 5 by housing the flange 341 provided on the filter outlet 34 in the flange accommodating portion 51 provided on the exhaust duct 5 . The flange accommodating portion 51 is arranged, for example, on the first side (the right side in FIG. 5), which serves as the entrance/exit of the flange 341, and on the other three sides (the second side on the near side in the paper of FIG. 5, the third side on the left side, and the A flange 341 is accommodated in a groove portion of the C channel material.

Further, when the filter module 3 is in the mounting position, a sealing member seals the first side (right side in FIG. 5) of the flange accommodating portion 51 that accommodates the flange 341, which is the entrance/exit of the flange 341. 342 is provided (FIGS. 5 and 6). The sealing member 342 is provided so as to stand upward from the rear surface of the filter module 3 . When the filter module 3 is pushed into the mounting position, the sealing member 342 comes into contact with the entrance/exit portion of the flange accommodating portion 51. That is, the sealing member 342 seals the connection portion between the filter outlet 34 and the discharge duct 5. By sealing the entrance/exit portion of the flange accommodating portion 51 with the sealing member 342, the degree of pressure reduction of the filter module 3 becomes difficult to decrease.

The floor running wheels 35 are wheels for running on a floor lower than the surface on which the painting booth 10 is installed, and are provided with two front wheels 35a and two rear wheels 35b (FIGS. 5 and 7). . The rail running wheels 36 are wheels for running on the rails 6, and are provided with two front wheels 36a and two rear wheels 36b. A rail contacting portion 361 that is the lower part of the front wheel 36a of the rail running wheel 36 and contacts the rail 6, and a rail contacting portion 362 (FIG. 5) that is the lower part of the rear wheel 36b of the rail running wheel 36 that contacts the rail 6. It is located at the lower part of the floor running wheel 35 and higher than the floor contact part 351 (FIG. 2), and the difference in height between the rail contact parts 361, 362 and the floor contact part 351 is based on the floor surface. greater than the height of the rail.

The arrangement of the floor running wheels 35 and the rail running wheels 36 projected onto a horizontal plane is as shown in FIG. The front wheel 35a of the floor running wheel 35 is provided at a location located inside the rail 6 when the filter module 3 is in the mounting position. The rear wheels 35b of the floor running wheels 35 are provided at the left and right corners of the rear end of the filter module 3. The rail running wheels 36 are provided with a front wheel 36a and a rear wheel 36b spaced apart from each other in accordance with the track of the two rails 6. Further, the front wheel 36a and the rear wheel 36b are arranged biased toward the front of the filter module 3 in the traveling direction of the filter module 3 (to the left in FIG. 7).

The rail 6 is provided so as to extend in a direction away from the front chamber outlet 22 with the front chamber outlet 22 as its base end. The rail 6 has a proximal portion 61 close to the front chamber outlet 22 and a far end portion 62 remote from the front chamber outlet 22 . The height of the proximal end portion 61 from the floor is higher than the height of the distal end portion 62 from the floor. Further, a first inclined portion 63 is provided between the proximal end portion 61 and the distal end portion 62. A second sloped portion 64 is provided that connects the end of the far end portion 62 and the floor surface. Note that, corresponding to the difference in height between the proximal end portion 61 and the distal end portion 62, the height positions of the rail contacting portion of the front wheel 36a and the rail contacting portion of the rear wheel 36b are different.

The function of each part of the rail 6 will be explained along with the procedure for installing the filter module 3. When the filter module 3 is pushed toward the front chamber 2 from the first state (FIG. 2) in which it is completely separated from the filter unit 1, the front wheel 36a of the rail running wheel 36 comes into contact with the first inclined portion 63. At the same time, the rear wheel 36b of the rail running wheel 36 enters a second state (FIG. 3) in which it is in contact with the second inclined portion 64. When the filter module 3 is further pushed, the front wheel 36a and the rear wheel 36b climb the first sloped part 63 and the second sloped part 64, respectively, and rest on the proximal part 61 and the distal part 62, and the flange 341 rises. It enters the third state (FIG. 4) in which it enters the entrance/exit of the flange accommodating portion 51. In the third state, the rail running wheels 36 are placed on the rails 6, so that the floor running wheels 35 are separated from the floor surface. Note that the center of gravity of the filter module 3 exists on the forward side in the traveling direction where the filter element 31 and the bag filter 32 are installed, and the front wheels 36a and the rear wheels 36b are arranged below the center of gravity. The slope portions 63 and 64 can be climbed in a stable posture.

When the filter module 3 is further pushed, the front wheel 36a and the rear wheel 36b run on the proximal portion 61 and the distal portion 62, respectively. This is because the difference in height between the rail contact portion 361 of the front wheel 36a and the rail contact portion 362 of the rear wheel 36b is substantially equal to the difference in height between the proximal end portion 61 and the distal end portion 62. , the filter module 3 can be pushed while keeping the filter module 3 (particularly the flange 341) horizontal. Thereby, the flange 341 can be accommodated in the flange accommodating portion 51 in a correct posture.

Moreover, since both the left and right rail running wheels 36 are guided by the two rails 6, the filter module 3 can be moved straight with respect to the front chamber outlet 22 of the front chamber 2. As a result, the front chamber outlet 22 of the front chamber 2 and the filter inlet 33 of the filter module 3 can be directly opposed, and a fourth state ( Figure 5) is realized.

Note that when removing the filter module 3, the procedure for attaching the filter module 3 is reversed. That is, the filter module 3 is moved in the order of the fourth state (FIG. 5), the third state (FIG. 4), the second state (FIG. 3), and the first state (FIG. 2).

A frame 7 is provided as a structure that defines the mounting position of the filter module 3. In this embodiment, the frame body 7 is a frame-shaped member provided surrounding the mounting position of the filter module 3. Furthermore, an engaging pair 71 (71a, 71b) and a regulating member 72 are provided as members for fixing the relative position of the filter module 3 and the frame 7 and fixing the filter module 3 in the mounting position. .

The engagement pair 71 includes an engagement piece 71a attached to the frame 7 and an engagement piece 71b attached to the side surface of the filter module 3, and the engagement piece 71b is inserted into the engagement piece 71a. By engaging with each other, the relative positions of the filter module 3 and the frame body 7 are fixed. The engagement pairs 71 are provided on the left and right sides of the filter module 3 and the frame body 7, respectively. The engagement pair 71 is, for example, a door catch.

The regulating member 72 is a combination of a handle lock provided on the filter module 3 and a lock receiving portion attached to the frame 7. By engaging the handle lock and the lock receiving portion, the filter module 3 in the mounting position is fixed to the frame 7. The regulating members 72 are provided at two rear end portions on the left and right sides of the filter module 3 and on the left and right sides of the frame body 7 corresponding thereto.

Further, a connecting member 73 that connects the rail 6 and the frame 7 is provided. Since the rail 6 is fixed to the frame 7 via the connecting member 73, it is possible to prevent the rail 6 from bending. Since the connecting member 73 is disposed ahead of the rear wheel 35b (on the left side in FIG. 7) when the filter module 3 moves to the mounting position, it does not come into contact with the rear wheel 35b. Further, since the front wheel 35a runs inside the two rails 6, it does not come into contact with the connecting member 73 when the filter module 3 is installed in the front chamber 2.

[Second embodiment]
A coating apparatus 100A according to the second embodiment includes a rail 6A instead of the rail 6 of the first embodiment (FIGS. 8 and 9). The rail 6A includes a main rail 65 that extends from the front chamber outlet 22 of the front chamber 2 as a base end in a direction away from the front chamber outlet 22, and an extension rail 66 that is detachable from the far end of the main rail 65. has. The main rail 65 is provided at a position corresponding to the rail 6 in the above embodiment, but differs from the rail 6 in the first embodiment in that the height is substantially constant over the entire length.

When using the filter unit 1 with the filter module 3 fixed in the mounting position, the extension rail 66 is not mounted on the main rail 65 and the filter module 3 is mounted on the main rail 65 in the fifth state. (Figure 9). On the other hand, when removing the filter module 3 from the mounting position or installing it in the mounting position, the extension rail 66 is mounted on the main rail 65, and the filter module 3 is moved by running on the main rail 65 and the extension rail 66. (Figure 8).

In this embodiment, the extension rail 66 is provided to ensure a distance for the filter module 3 to travel approximately horizontally at the height when it is in the mounting position, so that the flange 341 can be accommodated in the flange accommodating portion 51 in the correct posture. It is set as. Note that this embodiment does not assume that the filter module 3 is lowered onto the floor, but the filter element 31 is replaced in the sixth state (FIG. 8) in which the filter module 3 is pulled out onto the extension rail 66. . An extension rail (not shown) having an inclined portion may be installed in place of the extension rail 66, and the filter module 3 may be lowered to the floor. Further, the filter module 3 pulled out onto the extension rail 66 can be moved along with the extension rail 66 while being placed on the extension rail 66 using a transportation device such as a hand lifter.

[Other embodiments]
Finally, other embodiments of the present invention will be described. Note that the configurations disclosed in each of the embodiments below can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction occurs.

In the embodiment described above, the sealing member 342 is configured to stand upward from the rear surface of the filter module 3, but the sealing member 342 may be attached to the flange accommodating portion 51. In this case, the sealing member 342 can change one side of the flange accommodating portion 51 (the right side in FIG. 5), which serves as the entrance and exit of the flange 341, between an open state and a closed state by swinging or parallel movement.

Regarding other configurations, it should be understood that the embodiments disclosed in this specification are illustrative in all respects, and the scope of the present invention is not limited thereby. Those skilled in the art will easily understand that modifications can be made as appropriate without departing from the spirit of the present invention. Therefore, other embodiments that are modified without departing from the spirit of the present invention are naturally included within the scope of the present invention.

1: Filter unit 2: Front chamber 3: Filter module 31: Filter element 33: Filter inlet 34: Filter outlet 35: Floor running wheels 36: Rail running wheels 5: Discharge duct 6: Rail 10: Painting booth

Claims (20)

A painting booth having an upper tank in which painting work is performed and a lower tank arranged below the upper tank;
a receiving part that receives air exhausted from the paint booth;
It has a filter part that captures paint mist from the air that has passed through the receiving part, a filter inlet part into which air flows from the receiving part, and a filter outlet part which discharges the air in which the paint mist has been captured by the filter part, a filter module that is detachable from the receiving portion;
a rail for guiding the filter module to a mounting position where the filter module is mounted to the receiving portion;
The filter module has floor running wheels for running on a floor surface lower than the surface on which the coating booth is installed, and rail running wheels for running on the rails. Device. When the filter module is in the mounting position, the rail running wheels are in contact with the rail, and the floor running wheels are separated from the floor, and when the filter module is running on the floor, the rail running wheels are in contact with the rail, and when the filter module is running on the floor, The coating apparatus according to claim 1, wherein the surface running wheels are in contact with the floor surface, and the rail running wheels are spaced apart from the floor surface. The rail has a proximal portion close to the receiving portion, and a distal portion disposed on the opposite side of the receiving portion with respect to the proximal portion and having a lower height than the proximal portion. The coating device according to claim 1. The rail running wheel includes a front wheel disposed on the receiving part side when the filter module is in the mounting position, and a rear wheel disposed at a position farther from the receiving part than the front wheel. ,
The coating apparatus according to claim 3, wherein the lower part of the rear wheel is arranged at a lower position than the lower part of the front wheel. 5. The coating apparatus according to claim 4, wherein a difference in height between a lower part of the front wheel and a lower part of the rear wheel is approximately the same as a difference in height between the proximal end portion and the distal end portion. The rail has a first inclined portion connecting one end of the proximal end portion and one end of the distal end portion, and a second inclined portion connecting the other end of the distal end portion and the floor surface. The coating device according to claim 3, further comprising a portion. The rail running wheel includes a front wheel disposed on the receiving part side when the filter module is in the mounting position, and a rear wheel disposed at a position farther from the receiving part than the front wheel. ,
The coating device according to claim 6, wherein the rear wheel contacts the second inclined portion when the front wheel contacts the first inclined portion. The rails are a pair of rails extending in parallel with the receiving portion as a base end,
When the rail running wheels run on the pair of rails, the floor running wheels are arranged so that when the rail running wheels run on the pair of rails, the front wheels disposed on the receiving part side and inside the pair of rails are different from the receiving wheels. 2. The painting apparatus according to claim 1, further comprising a rear wheel located outside the pair of rails and located far from the rear wheel. further comprising a discharge part that receives air discharged from the filter outlet part and guides it out of the system,
The coating device according to claim 1, wherein the filter outlet portion and the discharge portion are aligned at the mounting position. the filter outlet has a flange;
The discharge part has a flange accommodating part that accommodates the flange,
The coating device according to claim 9, wherein the flange and the flange accommodating portion are aligned at the mounting position. The coating device according to claim 9, further comprising a sealing member that seals a connection portion between the filter outlet portion and the discharge portion that are aligned at the mounting position. The coating device according to claim 1, wherein the rail has a main rail extending with the receiving portion as a base end, and an extension rail that is detachable from the main rail and has substantially the same height as the main rail. . A painting booth having an upper tank in which painting work is performed and a lower tank arranged below the upper tank;
A filter module removably attached to the receiving part of a coating device, comprising: a receiving part that receives air discharged from the painting booth;
The coating device further includes a rail that guides the filter module to a mounting position where the filter module is mounted on the receiving part,
The filter module includes:
a filter section that captures paint mist from the air that has passed through the receiving section;
a filter inlet portion into which air flows from the receiving portion;
a filter outlet section for discharging air in which paint mist has been captured by the filter section;
floor surface running wheels for traveling on a floor surface lower than the surface on which the painting booth is installed;
A filter module comprising: a rail running wheel for running on the rail. When the filter module is in the mounting position, the rail running wheels are in contact with the rail, and the floor running wheels are separated from the floor, and when the filter module is running on the floor, the rail running wheels are in contact with the rail, and when the filter module is running on the floor, 14. The filter module according to claim 13, wherein the surface running wheels are in contact with the floor surface, and the rail running wheels are spaced apart from the floor surface. The rail has a proximal portion close to the receiving portion, and a distal portion disposed on the opposite side of the receiving portion with respect to the proximal portion and having a lower height than the proximal portion. The filter module according to claim 13. The rail running wheel includes a front wheel disposed on the receiving part side when the filter module is in the mounting position, and a rear wheel disposed at a position farther from the receiving part than the front wheel. ,
The filter module according to claim 15, wherein a lower portion of the rear wheel is arranged at a lower position than a lower portion of the front wheel. 17. The filter module according to claim 16, wherein a difference in height between a lower portion of the front wheel and a lower portion of the rear wheel is approximately the same as a difference in height between the proximal portion and the distal portion. The rail has a first inclined portion connecting one end of the proximal end portion and one end of the distal end portion, and a second inclined portion connecting the other end of the distal end portion and the floor surface. 18. The filter module of claim 17, further comprising a portion. The rail running wheel includes a front wheel disposed on the receiving part side when the filter module is in the mounting position, and a rear wheel disposed at a position farther from the receiving part than the front wheel. ,
19. The filter module of claim 18, wherein the rear wheel contacts the second ramped portion when the front wheel contacts the first ramped portion. The rails are a pair of rails extending in parallel with the receiving portion as a base end,
When the rail running wheels run on the pair of rails, the floor running wheels are arranged so that when the rail running wheels run on the pair of rails, the front wheels disposed on the receiving part side and inside the pair of rails are different from the receiving wheels. 14. The filter module according to claim 13, further comprising a rear wheel located outside the pair of rails and located far from the rear wheel.

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