JP2549346Y2 - Paint mist collection device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paint mist collecting device for removing paint mist in the air containing paint mist generated during painting.

[0002]

2. Description of the Related Art In a vehicle repair shop, after a paint is toned, a test piece (test piece) is spray-painted with a spray gun (paint spraying tool) or the like, or similarly to various small parts by a spray gun. Often, a predetermined coating is applied. At this time, the spray mist that has not been applied to the test pieces and components and the like is scattered and mixed into the air of the coating area, and thus it is necessary to remove the coating mist.

[0003] Under such demands, apparatuses for removing various kinds of paint mist have been conventionally proposed, and an example thereof is shown in FIG. In this apparatus, a lower water tank 1 is provided below the inside of the apparatus, and a partition plate 3 is provided inside the apparatus on the water surface of the lower water tank 1 with an air suction port 2 separated by about 40 mm from the water surface. The interior of the apparatus is divided into front and rear, and the front is defined as a painting work space part 4, and the rear is defined as an exhaust chamber 5 into which air from the painting work space part 4 is guided. In the vicinity, a vortex plate 6 for forming a water wall (water wall) W made of vortex water is provided near the air suction port 2 by a Venturi action,
A plurality of draining plates 7 are provided alternately in the exhaust chamber 5,
Further, an exhaust fan 8 for exhausting the air in the exhaust chamber 5 to the outside is provided above the exhaust chamber 5.

[0004] In the case of this apparatus, at the time of painting, an object A such as a test piece is positioned in the painting work space portion 4 and the paint 101 is sprayed by a spray gun 100 or the like to perform painting. paint mist m of shaped spray that has not been applied to the object to be coated a is mix in the air a ₁ of the painting work space section 4 portions. The air a <b> ₁ containing the paint mist is guided into the exhaust chamber 5 through a water wall W made of swirling water generated in the vicinity of the air suction port 2 by a suction force generated by driving the exhaust fan 8. When passing through the water wall W, the coating mist m is removed, and the air a after removal of the coating mist is removed.
_2, a plurality of drainage is such Although et against the deflector board 7 of the exhaust chamber 5, and is exhausted to the outside.

[0005]

However, in the case of the above-mentioned device, in forming the water wall W in the vicinity of the air suction port 2, a venturi action due to a pressure difference between the coating work space portion 4 side and the exhaust chamber 5 side is used. (1) An exhaust fan 8 having a considerably large suction force, for example, an expensive exhaust fan equipped with a turbo fan is required, and an increase in the cost of the device itself is unavoidable. (2) A narrow gap of about 40 mm for air a ₁ of the air inlet 2 forcibly paint mist containing from is sucked, easily dirty due to the paint mist m tip portion of the partition plate 3 and the vortex plate 6 near the air inlet 2, the dirt (3) Water wall W for removing paint mist
Formation is affected by the delicate spacing of the air inlets 2 and fluctuations in the water level, so that it is difficult to obtain a stable water wall shape. (4) The vortex of the water wall W Water droplets are liable to be scattered in the flowing water portion, and the scattered water droplets are sucked up and adhered to the bottom surface side of the draining plate 7 together with the dissolved coating mist m to contaminate the surroundings. (5) Furthermore, there are various problems such as (5) that the front side of the draining plate 7 is easily stained by the coating mist m.

[0006] For this reason, as another device, a device has been proposed in which water is sprayed in a spray form using a hydraulic pump to form a shower, and the coating mist is removed by the shower. There is a problem that the nozzle is easily clogged due to the adhesion of the coating mist, and the maintenance thereof is troublesome.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional circumstances, and is characterized by a lower water tank provided below the inside of the apparatus and a lower water tank provided on the lower water tank. An exhaust chamber into which the interior of the device is divided into front and rear portions with an air intake port appropriately separated from the water surface of the lower water tank, and a painting work space portion is formed in front of the device, and air in the painting work space portion is guided to the rear thereof. And a partition plate forming
Installed in the upper part of the partition plate and in front of the partition plate
And overflow water tank to form a Water curtain C ₁ -C ₂ from both sides by overflow toward the vicinity of the air inlet after the disposed below toward the inner part of the exhaust chamber Rutotomoni 2
From the gap δ between the two partition members to the vicinity of the air suction port
Water injection chamber to form a Water curtain C ₃ and blown jet stream, wherein a pump to circulate and supply the water through the piping system from the lower water tank to said overflow water tank and the water injection chamber, is installed on top of the exhaust chamber The paint mist collecting device comprises an exhaust fan for exhausting the air in the exhaust chamber to the outside.

[0008]

According to the present invention is driven by the pump, the water curtain C ₃ by water jet (jet) from the water curtain C ₁ -C ₂ and water injection chamber by overflow from the overflow water tank coalesce around air inlet As a result, the mist in the air containing the mist is effectively removed when passing through the vortex water. At this time,
Water curtain C ₃ from the water injection chamber is not due to venturi effect as in the prior art to be forcibly and stably formed by the pump, a large attraction force on the exhaust chamber side becomes unnecessary, high A mist removal function is obtained.

[0009]

1 and 2 show one embodiment of a paint mist collecting device according to the present invention. In the drawings, reference numeral 11 denotes a lower water tank provided below the inside of the device, and 13 denotes a lower water tank. inside the unit on the 11 divided into back and forth in an appropriate spaced apart form across the air inlet 12 from the surface of the lower water tank 11, the working space in front, and painting work space portion where the air a ₁ paint mist containing occurs partition plate 19 before and after the two-sided (front of being installed above side of the partition plate 13 the partition plate 13 which forms the exhaust chamber 15 where the air a ₂ backward to paint mist-removed is guided to form a 14 Overflow water tank which forms water curtains C ₁ and C ₂ due to overflow from the air suction port 12 to the vicinity of the air suction port 12;
The overflow water tank from the exhaust chamber 15 the water injection chamber to form a Water curtain C ₃ by water jet toward the air inlet 12 near the installed downward toward the inner part of the (water jet unit), 21 the lower water tub 11 A pump for circulating water through a piping system 22 to a water injection chamber 19 and a water injection chamber 20;
8 is installed above the exhaust chamber 15 and
This is an exhaust fan that exhausts the air a2 from which the paint mist has been removed.

Reference numeral 23 denotes an object to be coated which is mounted on a shaft 24 extending in the width direction near the front of the coating space 14 so as to be slidable in the axial direction and swingable in the front-rear direction. A mounting platform for supporting A, 25 is a horizontal plate portion formed in the lower front of the painting work space portion 14, 2
Reference numeral 6 denotes a rod-shaped hook provided at a lower portion of the front surface of the apparatus for hooking a spray gun 100 and the like. Reference numeral 27 denotes an operation switch provided on a side surface of the apparatus for controlling the pump 21 and the exhaust fan 18.

The overflow water tank 19 and the water jet chamber 20 extend to the full width inside the apparatus. The structure of the water injection chamber 20 is not particularly limited. However, as in this example, the partition wall member 20a having a generally C-shaped cross section that forms a concave surface in front of the bottom surface of the water injection chamber 20 and the partition wall 20a. Slight gap δ between the upper end edge of the member 20a
May be provided, and may be configured to include a curved partition wall member 20b of a generally elongated cross section provided to cover the gap δ in a curved manner from above and provided in a relatively extended manner. in the water is pressed supplied, pressed water along the inner surface of the curved partition wall member 20b from the gap δ is balloon as a jet stream, so that the water curtain C ₃ is formed.

The pump 21 is mounted on the lower water tank 11 side of the piping system 22, and is provided between the pump 21 and the lower water tank 11.
An open / close valve 28 and a Y-shaped strainer 29 having a filter function for removing solids and the like in the aquarium water are interposed in the open / close valve 28, and press-in water from the pump 21 is supplied to the overflow water tank 19 and the water injection chamber 20. Is circulated and supplied. At this time, the water outlet may be branched and piped to a plurality of locations so that the water supply to each portion is performed evenly. In particular, on the water injection chamber 20 side, it is necessary to form a water curtain having a uniform water amount (water film thickness), so that uniform water supply is important, and the water pressure is also low.
It is better to set it larger than the overflow water tank 19 side. If necessary, a valve or the like for adjusting the pressure may be provided at the water outlet on the water injection chamber 20 side. Further, since the water in the lower water tank 11 is gradually contaminated by collecting the coating mist m, the lower water tank 11 is also provided with a drain valve 30 for water exchange.

According to the coating mist collecting device of the present invention, when the pump 21 and the exhaust fan 18 are driven by operating the operation switch 27, the water curtains C ₁ and C due to overflow from the overflow water tank 19 are provided. ₂ and water curtain C ₃ by water jet from water jet chamber 20
At the same time as the swirling water is formed in the vicinity of the air suction port 12 in a form in which the air is combined with the air, the air in the coating work space 14 is guided into the exhaust chamber 15 and exhausted to the outside.

In this state, a work A such as a test piece is placed on the mounting table 23 in the coating work space section 14, and the paint 101 is sprayed by a spray gun 100 or the like.
A predetermined painting operation is performed. In this case, painted mist m is generated that has not been applied to the object to be coated A, but this is not splashed on the front side of the painting work space portion or mixed in the air a ₁ in 14 or directly partition plate 13, , air a ₁ of the paint mist containing is guided into the exhaust chamber 15 by the suction force by the exhaust fan 18 described above. In this case, for passing the vortex water coalesced air inlet 12 portion of each Water curtain C ₁ -C _3, this vortex water flow, paint mist m in the air a ₁ is effectively dissolved and removed . In particular, since the water curtain C ₃ from the water injection chamber 20 is stably supplied as a forced jet water flow by the pump 21, there is little possibility that a water film deforms or the water film breaks, and a high mist removal function can be obtained. . Also, in the paint mist m which splattered directly on the front side of the partition plate 13, by a stream of water by the water curtain C ₁ from the overflow water tank 19, it is effectively removed.

The exhaust chamber 15 from which the coating mist m has been removed
The inside air a2 is sequentially exhausted to the outside by the exhaust fan 18. In the case of the present invention, since the venturi action by the suction force of the exhaust chamber 15 is not used, a relatively small suction force is used. Good. Therefore, the exhaust fan 1
8 also may be of small size and small capacity, also, since the scattering of unnecessary water droplets from the water curtain C ₁ -C ₃ moieties, are minimized by the small suction force, the exhaust chamber 1
Even if there is no drain plate in 5, the unnecessary water drops hardly reach the exhaust fan 18 side. Even if most momentum strong some scattered water droplets from the water curtain C ₃ side is generated, from the blowing direction of the relationship, the scattering water droplets partition board 1
Is not striking the third back side, but also on the back side, since the Water curtain C ₂ from the overflow water tank 19 is a stream of water, it is also effectively removed.

At the time of the above-mentioned coating, an operator holds the spray gun 10
Zero or the like can be temporarily placed on the horizontal plate portion 25 below the painting work space portion 14 or can be hooked on the hook 26.

In the above embodiment, the portable mist collecting apparatus which is relatively small has been described. However, the present invention is not limited to this, and the present invention is not limited to this. Of course, the present invention can also be applied as a device to be installed in a device.

[0018]

As apparent from the above description, the coating mist collecting device according to the present invention has the following excellent effects.

(1) First, in the device of the present invention, since the Venturi effect is not used for forming the vortex water near the air suction port, a small-sized exhaust fan having a small suction force can be sufficiently used. The cost of the apparatus itself can be reduced.

(2) Since the water curtains C _{1 to} C ₃ from the overflow water tank and the water injection chamber are merged in a multi-faceted manner to form strong swirling water near the air suction port, effective paint mist removal. The function is obtained. In particular, since the water curtain C ₃ from the water injection chamber is stable supply as a forced jet stream by the pump, or collapsed form water film,
The possibility that an open hole is partially or instantaneously formed in the water film is small, and a stable and high-quality water curtain is always obtained, so that a high mist removal function is ensured.

[0021] (3) Since the suction force by the exhauster is may be relatively small, suppressed as much as possible from the unwanted water droplets by each Water curtain C ₁ -C ₃ from the vortex water flow portions in the vicinity of the air inlet is scattered be able to. Therefore, it is possible to effectively prevent unnecessary water droplets from reaching the exhaust fan side, in combination with the small suction force, without providing a drainer plate in the exhaust chamber as in the related art. As a result, troubles on the exhaust fan side can be suppressed, and the life of the exhaust fan side can be prolonged.

(4) There is no drain plate in the exhaust chamber,
In addition, since the contamination of the apparatus itself is suppressed as much as possible, maintenance such as cleaning can be performed relatively easily, and a highly practical apparatus can be obtained.

(5) Of course, the above water curtain C
In forming the ₁ -C _3, for use of the instrument, such as a shower nozzle is no problems such as clogging or no.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view showing an embodiment of a paint mist collecting device according to the present invention.

FIG. 2 is a perspective view showing the appearance of the coating mist collecting device of FIG.

FIG. 3 is a partial longitudinal sectional view showing an example of a conventional apparatus for removing a coating mist.

[Explanation of symbols]

11 lower water tank 12 air a ₂ paint mist air inlet 13 baffle plate 14 painting work space section 15 exhaust chamber 18 exhauster 19 Overflow water tank 20 water injection chamber 20a partition wall member 20b partition member 21 pump 22 pipeline a ₁ paint mist containing Air after removal C ₁ -C ₃ water curtain δ Gap 100 Coating object

Claims (1)

(57) [Scope of request for utility model registration] 1. A lower water tank provided below the inside of the device, and the inside of the device on the lower water tank is divided into front and rear portions with an air suction port appropriately separated from the water surface of the lower water tank, and a painting operation is performed in front of the lower water tank. A partition plate which forms a space portion and forms an exhaust chamber to which air on the side of the painting work space portion is guided behind the partition plate, and the air suction device which is installed near the upper side of the partition plate and which is provided on both front and rear sides of the partition plate. and overflow water tank to form a Water curtain C ₁ -C ₂ by flooding toward near the mouth, disposed below toward the inner part of the exhaust chamber
And the air inlet is provided through the gap δ between the two partition members.
Water curtain blows jet stream close to
Water injection chamber to form a C _3, a pump to circulate and supply the water through the piping system to the overflow water tank and water injection chamber from said lower water tank, is placed on top of the exhaust chamber air of the exhaust chamber to the outside A paint mist collecting device comprising an exhaust fan for exhausting air.