JP2010104921A - Exhauster and device for coating work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an exhauster which hardly causes clogging, and also provide a device for coating work which uses such exhauster. <P>SOLUTION: Air flows along an air flowing direction 6 by means of suction by a turbofan 2, that is, the air flows into a first air chamber 3 from a second air chamber 4, and flows through an exhaust gas-guiding pipe 11 from the first air chamber 3, and is then emitted to the outside. Contaminated air sent to a semicylindrical area 4C reverses the direction to flow backward and is sent to the first air chamber 3, together with another contaminated air flowing along an internal member 4A and scattered water 10, through a releasing hole 4E which is located in the vicinity of the semicylindrical area 4C and communicates with the first air chamber 3, while contacting the contaminated air flowing along the internal member 4A and the scattered water 10. The contaminated air sent into the first air chamber 3 goes up in the first air chamber 3 to flow into a space on the side of a sucking member 3A. At that time, the air flows downward, and then the air goes up again to flow into a sucking hole 3D. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an exhaust device and a painting work device. Specifically, the present invention relates to an exhaust device and a painting work device that collects dust such as paint and harmful substances generated in painting work and the like.

  To prevent contamination of the environment around the painting work site, maintain environmental hygiene, and ensure the quality of the coating film, perform painting, for example, spray painting on the painting object in the painting work room, 2. Description of the Related Art A painting work chamber is known in which polluted air containing paint mist that scatters in the air without wearing is exhausted by an exhaust fan through an air filter.

  However, in such a painting work room, since the indoor air is purified only by the air filter, the contaminants cannot be sufficiently collected.

  Therefore, for example, Patent Literature 1 describes an air purification device as shown in FIG. That is, in Patent Document 1, a clean room fiber filter 102, a large number of spray nozzles 105 disposed in the upper front portion of the fiber filter 102, and water accumulated in the bottom 106 of the air purification chamber 101 are circulated to the spray nozzle 105. An air purification device in a painting booth is described, which includes a pump 108 to be adjusted and an adjustment cover 103 that adjusts the amount of air that flows in at the rear of the fiber filter 102. The spray water discharged from the spray nozzle 105 expands in an umbrella shape and adsorbs and removes fine particles such as dust. Moreover, spray water changes to a vortex | eddy_current with a high-speed air flow, and functions as a water filter. When the above air purification device is arranged in the underfloor air discharge path of the painting booth, the painting booth device sufficiently meets the air pollution standards.

JP 11-309397 A

  However, in the conventional apparatus using such spray water, since the adhesiveness of the paint mist containing moisture increases, it tends to adhere to the filter, the inner wall of the pipe, etc., and clogging occurs at an early stage. there were.

  The present invention has been made in view of the above points, and an object of the present invention is to provide an exhaust device in which clogging is unlikely to occur and an apparatus for painting work using such an exhaust device.

  In order to achieve the above object, an exhaust device according to the present invention includes a suction unit that sucks air, a first air chamber that is located upstream of the suction unit and communicates with the suction unit, and the first air chamber. A second air chamber located on the upstream side of the air chamber and communicating with the first air chamber, the suction means, the first air chamber, and the second air chamber, An airflow passage through which air flows is formed, the second air chamber is located downstream of a liquid receiving tank that receives liquid, and an opening of the airflow passage of the second air chamber is formed in the liquid receiving tank. The second air chamber faces the liquid surface and has a semi-cylindrical region having a semicircular cross section.

Here, the second air chamber is located downstream of the liquid receiving tank that receives the liquid, and the opening of the air flow passage of the second air chamber faces the liquid surface of the liquid receiving tank. The liquid level of the liquid receiving tank is swelled toward the inside of the second air chamber by the air flowing through the air flow passage, and the polluted air containing exhausted air, for example, dusty air including dust, is spilled in the middle of the air flow passage. Since it always hits the liquid in the tank, the dust contained in the contaminated air after hitting the liquid in the liquid receiving tank should be less sticky than the dust contained in the contaminated air sprayed with conventional spray water. Can do.
In addition, due to the semi-cylindrical region having a semicircular cross section, the contaminated air containing the liquid hits the liquid in the liquid receiving tank becomes a vortex in the semi-cylindrical region, and collects dust such as uncoated paint at the center of the vortex. In addition to producing fine bubbles, the liquid can be prevented from decaying.

  In the exhaust device of the present invention, the first air chamber closes the space formed in the lower portion of the suction member, the suction member communicating with the suction means, the outer wall member that forms a space between the suction member, and the suction member. When the partition member is configured, since the space below the suction member is blocked by the partition member, the air flowing from the second air chamber does not flow through the space below the suction member, for example, suction When flowing from the upper space of the member into the space of the side of the suction member, the air flow becomes a downdraft and hits the outer wall member that forms the lower portion of the first air chamber, and dust or the like contained in the air by the impact Adheres to the outer wall member, and air from which dust and the like are removed flows to the suction member.

  Further, in the exhaust device of the present invention, when the suction port is formed in the lower part of the suction member and the suction port is located downstream of the partition member, the suction port is included in the air when the air flows through the space above the suction member. Even if the liquid falls on the suction member, the suction port is formed in the lower part, so that the liquid is difficult to enter the suction member. Further, the suction port is located downstream of the partition member, so that the air is on the side of the suction member. It rises through the space of the part, passes through the space above the suction member, then descends through the space on the side opposite to the suction member, and flows to the suction port formed at the lower part of the suction member Thus, since the circumference of the suction member is substantially made, the downward airflow tends to gain momentum.

The exhaust device of the present invention includes a water channel communicating with a liquid receiving tank located upstream of the second air chamber, and a mesh member disposed inside the water channel and configured to be rotatable. When one end of the cylindrical region is located below the other end and an opening is formed at the end located below, and the opening faces the water channel, the vortex generated in the semi-cylindrical region The dust collected at the center of the vortex flow naturally flows along with the liquid in the semi-cylindrical region and is discharged from the opening to the water channel, and the dust is separated from the liquid by the mesh member arranged in the water channel. Dust can be collected by rotating the mesh member.
Here, “the opening faces the water channel” includes not only the case where the opening directly faces the water channel but also the case where the mouth of a conduit or the like connected to the opening faces the water channel.

  In order to achieve the above-mentioned object, the painting work apparatus of the present invention is a lattice-like floor that forms a flowing liquid space between the bottom and the bottom that is located above the bottom. A painting work chamber having a member; a liquid receiving tank that communicates with the liquid flowing space and that receives the liquid; and an exhaust device that communicates with the liquid receiving tank, the exhaust device including suction means for sucking air A first air chamber located upstream of the suction means and in communication with the suction means; and a second air located upstream of the first air chamber and in communication with the first air chamber. An airflow passage through which air flows is formed by the suction means, the first air chamber, and the second air chamber, and the second air chamber is more than the liquid receiving tank. Located on the downstream side, the opening of the air flow passage of the second air chamber is on the liquid level of the liquid receiving tank. And and said second air chamber in cross section has a semi-cylindrical body region of the semi-arc shape.

Here, when the liquid receiving tank communicating with the flowing liquid space in the painting work room communicates with the exhaust device, contaminated air containing dust generated by the painting work in the painting work room flows toward the bottom of the painting work room. The air enters the second air chamber of the exhaust device.
In addition, the second air chamber is located downstream of the liquid receiving tank, and the opening of the air flow path of the second air chamber faces the liquid level of the liquid receiving tank. The liquid level of the liquid receiving tank rippls toward the inside of the second air chamber due to the flowing air, and the exhausted air, for example, contaminated air containing dust, flows into the turbulent liquid in the liquid receiving tank while flowing through the air flow passage. Since it always hits, the dust contained in the contaminated air after hitting the liquid in the liquid-receiving tank can be less sticky than the dust contained in the contaminated air sprayed with conventional spray water.
In addition, due to the semi-cylindrical region having a semicircular cross section, the contaminated air containing the liquid hits the liquid in the liquid receiving tank becomes a vortex in the semi-cylindrical region, and collects dust such as uncoated paint at the center of the vortex. In addition to producing fine bubbles, the liquid can be prevented from decaying.

The exhaust device according to the present invention is less likely to be clogged.
The coating work apparatus according to the present invention is less likely to be clogged.

Hereinafter, embodiments of the present invention will be described with reference to the drawings to facilitate understanding of the present invention.
FIG. 1 is a schematic diagram illustrating an example of an exhaust device according to the present invention.
The exhaust device 1 of the present invention is a turbofan (which is an example of a suction unit) 2 that sucks air and is located upstream of the turbofan 2 and communicates with the turbofan 2 via an exhaust induction pipe 11. 1 air chamber 3, and a second air chamber 4 that is located upstream of the first air chamber 3 and communicates with the first air chamber 3.
The turbo fan 2, the first air chamber 3, and the second air chamber 4 form an airflow passage through which air flows in the airflow direction 6.
Further, as shown in FIG. 1, the second air chamber 4 is formed in an arc shape by an inner member 4A and an outer member 4B. The second air chamber 4 is located on the downstream side of a water receiving tank (an example of a liquid receiving tank) 7 that receives water (an example of a liquid) 5, and the second air chamber 4. The airflow passage opening faces the water surface of the water receiving tank 7.
In addition, the second air chamber 4 has a semi-cylindrical region 4 </ b> C having a semicircular arc shape, which is formed by rounding a part of the outer member 4 </ b> B at a position away from the water surface of the water receiving tank 7.
Further, an arc-shaped guide plate 8 is attached in the vicinity of the opening of the air flow passage of the second air chamber 4, so that contaminated air and water 5 can easily enter the second air chamber 4. .

The first air chamber 3 includes a cylindrical suction member 3A that communicates with the turbo fan 2, an outer wall member 3B that forms a space between the suction member 3A, and a space that is formed below the suction member 3A. It is comprised with the partition member 3C which plugs up.
A suction port 3D is formed in the lower part of the suction member 3A, and the suction port 3D is located downstream of the partition member 3C. A shielding plate 9 is attached near the suction port 3D of the suction member 3A so as to extend downward from the outer wall surface of the suction member 3A.

FIG. 2 is a schematic view showing an example of how dust dust is collected by the exhaust device of the present invention.
The exhaust device 1 of the present invention cuts off the water channel 12 from the water channel 12 connected to the communication port 4G formed in the side wall of the water receiving tank 7 located on the upstream side of the second air chamber 4 and communicating with the water receiving tank 7. The mesh member 18 is arranged inside the water channel 12 and is configured to rotate in the rotation direction 20 by the drive motor 19, and one end portion of the half cylinder region 4 </ b> C is below the other end portion. The opening 4F is formed at the end located below, and the opening 4F faces the water channel 12. Further, a part of the mesh member 18 is placed on the bottom of the water channel 12 and is immersed in the water 5.
A conduit 13 is connected to the opening 4F. The conduit 13 is directed to the water channel 12, and a disc-shaped opening / closing lid 14 is attached to the tip of the conduit 13. The opening / closing lid 14 is opened and closed using atmospheric pressure.

Next, with reference to FIG.1 and FIG.2, the method of dust collection | recovery is demonstrated.
By the suction by the turbo fan 2, the air flow along the air flow direction 6, that is, the air enters the first air chamber 3 from the second air chamber 4, and further passes through the exhaust induction pipe 11 from the first air chamber 3. As a result, a flow of air exhausted outside is generated. Based on such a flow of air, the positional relationship of the constituent members of the present invention is expressed by the words “upstream” and “downstream”.
Due to such an air flow, contaminated air including air, for example, dust, in a region communicating with the second air chamber 4 is sucked into the second air chamber 4.

  The contaminated air sucked into the second air chamber 4 flows through the second air chamber 4 to the first air chamber 3, but a water receiving tank is located upstream of the second air chamber 4. 1 and the opening of the air flow passage of the second air chamber 4 faces the water surface of the water receiving tank 7 as shown in FIG. 1, the water surface of the water receiving tank 7 is second due to the contaminated air flowing through the air flow passage. In the middle of the air chamber 4, the contaminated air inevitably hits the undulated water 5 in the water receiving tank 7 in the gap 4 </ b> D while flowing through the air flow passage. The water 10 is sucked into the second air chamber 4 to generate splashed water 10.

Further, the scattered water 10 and the contaminated air sucked into the second air chamber 4 are scattered by centrifugal force because the second air chamber 4 is formed in an arc shape by the inner member 4A and the outer member 4B. The water 10 and the contaminated air are pushed toward the outer member 4B, and the scattered water 10 and the contaminated air are sent along the outer member 4B to the half cylinder region 4C.
Further, the scattered water 10 and the contaminated air are pushed toward the inner member 4A by the centripetal force, and the scattered water 10 and the contaminated air pass along the inner member 4A through the opening 4E connected to the first air chamber 3. It is sent into the first air chamber 3.

Next, when the polluted air is sent to the half-cylinder region 4C together with the splashed water 10, the splashed water 10 and the polluted air are rotated and stirred in the half-cylinder region 4C, and a vortex is generated. The dust pushed outward and trapped in the scattered water 10 is agglomerated at the center of the vortex with centripetal force together with a large amount of generated fine bubbles 16, and dust dust 17 is generated. And the dust bowl 17 is brought close to the center part by the buoyancy in the scattered water 10 by a large amount of fine bubbles 16.
In addition, since one end portion of the semi-cylindrical region 4C is located below the other end portion and the opening 4F is formed at the end portion located below, the scattered water 10 and the dust basket 17 are naturally When the splashed water 10 and the dust basket 17 are accumulated in the conduit 13 to some extent, the opening / closing lid 14 is opened by weight, and when the interior of the conduit 13 is emptied, a negative pressure is generated. Thus, the opening / closing lid 14 is closed. When the opening / closing lid 14 is opened, the scattered water 10 and the dust basket 17 are discharged to the water channel 12.

Further, the water channel 12 is connected to the communication port 4G formed on the side wall of the water receiving tank 7 located on the upstream side of the second air chamber 4 and communicates with the water receiving tank 7, so that the water channel 12 includes water 5 The discharged splashed water 10 and the dust basket 17 merge into the water 5 together with a large amount of fine bubbles 16, and the dust basket 17 floats in the water 5 by the large amount of fine bubbles 16. Moreover, since the water 5 that has passed through the mesh member 18 is sucked up by a water supply pump (not shown), the flow of the water 5 toward the mesh member 18 is generated.
Further, the dust basket 17 that floats on the flow of water 5 toward the mesh member 18 reaches the mesh member 18, and the dust basket 17 rides on the mesh member 18 that rotates like a belt conveyor, and the water 5 and the dust basket 17. Are separated and the dust basket 17 is recovered.

On the other hand, the contaminated air sent to the semi-cylindrical region 4C reverses and flows backward, and collides with the contaminated air and the scattered water 10 flowing along the inner member 4A. Inside the first air chamber 3 together with the contaminated air and the scattered water 10 that flow along the inner member 4A through the open port 4E that is located in the vicinity of the cylindrical body region 4C and is connected to the first air chamber 3. Sent.
The contaminated air sent into the first air chamber 3 rises in the first air chamber 3 because the partition member 3C blocks the space formed in the lower portion of the suction member 3A. When the air flows toward the ceiling of the air chamber 3 and flows into the space on the side of the suction member 3A through the space above the suction member 3A, the air flow becomes a descending airflow and flows through the lower portion of the first air chamber 3. When hitting the outer wall member (in this case, the outer wall member of the second air chamber 4 is shared), the dust contained in the contaminated air is attached to the outer wall member by the impact, and the dust is removed. Air rises again and flows into the suction port 3D.
In this case, since dust and scattered water 10 are likely to accumulate near the partition member 3C, a discharge hole for discharging the dust and scattered water 10 to the water channel 12 may be formed near the partition member 3C.
Note that one end of the cylindrical suction member 3A communicates with the exhaust attraction pipe 11 as shown in FIG. 1, and the other end is closed with an outer wall member (not shown).
Then, the air that has flowed into the suction port 3D is exhausted to the outside through the exhaust induction pipe 11.

  Here, the exhaust apparatus of the present invention is located on the upstream side of the suction means for sucking air, the first air chamber located on the upstream side of the suction means and communicating with the suction means, and the first air chamber. And a second air chamber communicating with the first air chamber, and an air flow passage through which air flows is formed by the suction means, the first air chamber, and the second air chamber, and the second air The chamber is located downstream of the liquid receiving tank that receives the liquid, the opening of the air flow passage of the second air chamber faces the liquid level of the liquid receiving tank, and the second air chamber has a cross-section 1 has a semi-arc-shaped semi-cylindrical region, the first air chamber does not necessarily have a suction member communicating with the suction means, an outer wall member that forms a space between the suction members, and a lower portion of the suction member However, the first air chamber may be a suction hand. A suction member that communicates with the suction member, an outer wall member that forms a space between the suction member, and a partition member that closes the space formed in the lower portion of the suction member. Since the space is blocked, the air flowing from the second air chamber does not flow in the space below the suction member, for example, when flowing from the space above the suction member into the space on the side of the suction member, The air flow becomes a downdraft and hits the outer wall member that forms the lower part of the first air chamber. Due to the impact, dust contained in the air adheres to the outer wall member, and the air from which the dust has been removed is sucked. Since it flows to a member, it is preferable.

  In addition, the exhaust apparatus of the present invention is located on the upstream side of the first air chamber, the suction means for sucking air, the first air chamber located on the upstream side of the suction means and communicating with the suction means, A second air chamber that communicates with the first air chamber, and an airflow passage through which air flows is formed by the suction means, the first air chamber, and the second air chamber, and the second air chamber Is located downstream of the liquid receiving tank that receives the liquid, the opening of the air flow passage of the second air chamber faces the liquid level of the liquid receiving tank, and the second air chamber has a cross section. As long as it has a semicircular cylindrical region, the suction port does not necessarily have to be formed in the lower part of the suction member, and the suction port does not have to be located downstream of the partition member. If a suction port is formed in the lower part of the tube and the suction port is located downstream of the partition member, the suction port When air flows through the upper space of the material, even if the liquid contained in the air falls on the suction member, the suction port is formed at the lower part, so that the liquid is difficult to enter the suction member. By being located further downstream, the air rises through the space on the side of the suction member, and then passes through the space on the upper side of the suction member and then descends through the space on the opposite side of the suction member However, since the circuit around the suction member is made to flow to the suction port formed in the lower part of the suction member, it is preferable because the descending airflow tends to have a momentum.

  In addition, the exhaust apparatus of the present invention is located on the upstream side of the first air chamber, the suction means for sucking air, the first air chamber located on the upstream side of the suction means and communicating with the suction means, A second air chamber that communicates with the first air chamber, and an airflow passage through which air flows is formed by the suction means, the first air chamber, and the second air chamber, and the second air chamber Is located downstream of the liquid receiving tank that receives the liquid, the opening of the air flow passage of the second air chamber faces the liquid level of the liquid receiving tank, and the second air chamber has a cross section. If it has a semi-circular cylindrical region, a water channel that communicates with a liquid receiving tank located upstream of the second air chamber, and a mesh that is disposed inside the water channel and is configured to be rotatable. And one end portion of the cylindrical region is located below the other end portion. The opening portion may not be formed in the lower end portion, and the opening portion may not face the water channel, but the exhaust device of the present invention is located upstream of the second air chamber. A water channel that communicates with the liquid receiving tank, and a mesh member that is disposed inside the water channel and configured to be rotatable, and one end of the semi-cylindrical region is positioned below the other end. If the opening is formed at the end located below and the opening faces the water channel, the dust collected at the center of the vortex by the vortex generated in the half-cylinder region It is preferable because it naturally flows down with the liquid and is discharged from the opening to the water channel, and the dust is separated from the liquid by the mesh member disposed in the water channel, and the separated dust can be recovered by the rotation of the mesh member.

FIG. 3 is a schematic view showing an example of a painting work apparatus according to the present invention.
The painting work apparatus 21 of the present invention includes a painting work having an inclined bottom 31 and a grid-like floor member 26 that forms a flowing water space 27 that is located above the bottom 31 and allows water to flow between the bottom 31. The chamber 22 and the exhaust device 1 of the present invention communicating with the painting work chamber 22 are provided. Further, the water receiving tank 7 communicates with the flowing water space 27, and the second air chamber 4 of the exhaust device 1 is located on the downstream side of the water receiving tank 7 and communicates with the water receiving tank 7. The opening of the airflow passage 4 faces the water surface of the water receiving tank 7.

In the painting work chamber 22, contaminated air containing dust generated by spraying, for example, on the object 29 is sucked into the second air chamber 4 of the exhaust device 1 of the present invention.
Moreover, in the dust generated by spraying, dust that has been trapped by the circulating water 24 that flows down like a waterfall along the vertical wall 30 and enters the water receiving tank 7 together with the circulating water 24, and the grid-like floor member 26 are included. There is dust that passes through and is captured by the water in the flowing water space 27 and enters the water receiving tank 7.

Here, the circulating water 24 is water that has passed through the mesh member 18 and from which the dust basket 17 has been separated and collected and has been sent to the painting work chamber 22 by a water pump. In addition, the circulating water 24 is adjacent to the vertical wall 30 over the entire width of the vertical wall 30, the ceiling side water tank 23 provided near the ceiling of the painting work chamber 22, and the bottom 31 of the painting work chamber 22 over the entire width of the bottom 31. Is introduced into the bottom side water tank 28 provided in the bottom.
Circulating water 24 overflowing from the ceiling side water tank 23 flows down like a waterfall along the vertical wall 30, and the bottom side water tank 28 is connected to the flowing water space 27, and the inclination of the bottom 31 and the flow of the circulating water 24 are performed. As a result, a flow in the flowing direction 25 occurs in the water in the flowing water space 27.

  Contaminated air containing dust generated by spray spraying, circulating water 24 flowing down through vertical wall 30 capturing dust generated by spray spraying, and flowing water space 27 capturing dust passing through grid-like floor member 26 This water is also sucked into the second air chamber 4 of the exhaust device 1 of the present invention, and sent to the half-cylinder region 4C as contaminated air or scattered water 10.

  As described above, the second air chamber 4 of the exhaust device 1 of the present invention is located downstream of the water receiving tank 7, and the opening of the air flow passage of the second air chamber 4 is the water surface of the water receiving tank 7. Therefore, the water surface of the water receiving tank 7 swells toward the inside of the second air chamber 4 due to the air flowing through the airflow passage, and the polluted air containing dust flows in the middle of the airflow passage. Since it always hits the water 5 in the water tank 7, the dust contained in the contaminated air after hitting the water 5 in the water receiving tank 7 is more sticky than the dust contained in the contaminated air sprayed with conventional spray water. Therefore, clogging is less likely to occur.

  In addition, the first air chamber 3 of the exhaust device 1 of the present invention includes a cylindrical suction member 3A communicating with the turbofan 2, an outer wall member 3B that forms a space between the suction member 3A, and a suction member 3A. Since the partition member 3C closes the space formed in the lower part of the air, the air flowing from the second air chamber 4 does not flow in the lower space of the suction member 3A, and the upper part of the suction member 3A. When flowing from the space into the side space of the suction member, the air flow becomes a descending airflow and hits the outer wall member constituting the lower portion of the first air chamber 3, and dust contained in the air by the impact is the outer wall member. The air that has adhered to the surface and from which dust or the like has been removed can be flowed to the suction member 3A.

  In addition, a suction port 3D is formed in the lower part of the suction member 3A, and the suction port 3D is located downstream of the partition member 3C. Therefore, when air flows through the space above the suction member 3A, water contained in the air Since the suction port 3D is formed in the lower part even if it falls on the suction member 3A, it is difficult for water to enter the suction member 3A. Furthermore, the suction port 3D is located downstream of the partition member 3C, so that air is sucked. Formed in the lower part of the suction member 3A after ascending through the space on the side of the member 3A and passing through the space on the upper side of the suction member 3A and then descending through the space on the opposite side of the suction member 3A Since it goes around the suction member 3A so as to flow to the suction port 3D, the downward airflow is likely to gain momentum.

  Further, the exhaust device 1 of the present invention is connected to a communication port 4G formed on the side wall of the water receiving tank 7 located on the upstream side of the second air chamber 4 and communicates with the water receiving tank 7 and the water path 12. And a mesh member 18 disposed in the water channel 12 and configured to rotate in the rotation direction 20 by the drive motor 19, with one end of the half-cylindrical region 4C being the other end. An opening 4F is formed at the lower end and at the lower end, and the opening 4F faces the water channel 12. Therefore, the opening 4F is collected at the center of the vortex by the vortex generated in the semi-cylindrical region. The generated dust (dust basket 17) naturally flows down with the water (spatter water 10) in the semi-cylindrical region 4C, is discharged from the opening 4F to the water channel, and is formed by the mesh member 18 disposed in the water channel 12. 17 is separated from water, separated dust container 1 The can be recovered by the rotation of the mesh member 18.

It is the schematic explaining an example of the exhaust apparatus of this invention. It is the schematic which shows an example of a mode that dust dust is collect | recovered with the exhaust apparatus of this invention. It is the schematic which shows an example of the apparatus for coating work of this invention. It is the schematic explaining the conventional air purification apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Exhaust device 2 Turbo fan 3 1st air chamber 3A Suction member 3B Outer wall member 3C Partition member 3D Suction port 4 2nd air chamber 4A Inner member 4B Outer member 4C Half cylinder body area 4D Gap 4E Opening port 4F Opening 4G Communication port 5 Water 6 Air flow direction 7 Receiving tank 8 Guide plate 9 Shield plate 10 Splashed water 11 Exhaust air induction pipe 12 Water channel 13 Conduit 14 Opening / closing lid 16 Fine bubble 17 Dust bowl 18 Mesh member 19 Drive motor 20 Rotation direction 21 For painting work Equipment 22 Painting work room 23 Ceiling side water tank 24 Circulating water 25 Flow direction 26 Lattice-like floor member 27 Flowing space 28 Bottom side water tank 29 Object to be coated 30 Vertical wall 31 Bottom

Claims (5)

A suction means for sucking air;
A first air chamber located upstream of the suction means and in communication with the suction means;
A second air chamber located upstream of the first air chamber and in communication with the first air chamber;
An airflow passage through which air flows is formed by the suction means, the first air chamber, and the second air chamber,
The second air chamber is located on the downstream side of the liquid receiving tank that receives the liquid, and the opening of the air flow passage of the second air chamber faces the liquid surface of the liquid receiving tank,
The second air chamber has a half cylinder region having a semicircular cross section. The first air chamber includes a suction member communicating with the suction means;
An outer wall member forming a space with the suction member;
The exhaust device according to claim 1, comprising: a partition member that closes a space formed in a lower portion of the suction member. A suction port is formed at a lower portion of the suction member;
The exhaust device according to claim 2, wherein the suction port is located downstream of the partition member. A water channel communicating with the liquid receiving tank located upstream of the second air chamber;
A mesh member disposed inside the water channel and configured to be rotatable,
One end of the semi-cylindrical region is located below the other end, and an opening is formed at the end located below,
The exhaust device according to any one of claims 1 to 3, wherein the opening faces the water channel. A painting work chamber having a bottom and a grid-like floor member that is located above the bottom and that forms a flowing liquid space between which the liquid flows.
A liquid receiving tank that communicates with the liquid flow space and receives the liquid;
An exhaust device communicating with the liquid receiving tank,
The exhaust device
A suction means for sucking air;
A first air chamber located upstream of the suction means and in communication with the suction means;
A second air chamber located upstream of the first air chamber and in communication with the first air chamber;
An airflow passage through which air flows is formed by the suction means, the first air chamber, and the second air chamber,
The second air chamber is located downstream of the liquid receiving tank, and the opening of the air flow passage of the second air chamber faces the liquid level of the liquid receiving tank,
The second air chamber has a half cylinder region having a semicircular cross section.

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