JPS607818Y2 - Washable paint booth - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a small, hygienic and safe flushable paint booth.

BACKGROUND ART Conventionally, a front-open type water-washable painting booth as shown in FIG. 1 has been widely used as a painting booth.

That is, this flushable paint booth has a housing 1 with an open front, a steel plate 2 vertically disposed inside the housing 1, and a plurality of nozzles 4, which are piped to the ceiling of the housing 1. a water tank 5 disposed below the iron plate 2, an exhaust fan 6 for discharging paint mist in the housing 1 to the outside from a duct 7, a pump 8 for guiding water to the pipe 3, etc. Water that has been extracted from the bark and led to the pipe 3 is injected from a nozzle 4 and flows down along the surface of the iron plate 2, thereby forming a water curtain.

The object to be coated 9 is coated by an operator standing in front of the housing 1 and spraying by operating a gun 10.

In the spraying, most of the remaining paint mist that is sprayed from the gun 10 and which does not adhere to the object 9 hits the water curtain and falls together with water, and accumulates in the mold tank 5.

On the other hand, the remaining mist that did not hit the water curtain is sucked into the rear chamber 12 of the housing 1 by the exhaust fan 6 from between the inclined plates 11 of the iron plate 2, where it is further filtered by another water curtain 13, and then passed through the duct. 7 is discharged outdoors.

In this way, most of the paint mist that has not been applied to the object 9 to be painted is removed within the housing 1, and is prevented from being released outdoors as much as possible.

However, in such conventional painting booths, since the front of the housing 1 is open, some of the paint mist comes out and floats around the worker, which is not only unfavorable from an environmental hygiene perspective. However, there are inconveniences such as the necessity for workers to wear dust masks, which is cumbersome, and there is also the risk of a fire accident due to the mist igniting.

In addition, in the painting booth, in order to prevent droplets of water flowing down along the iron plate 2 from hitting the object to be painted, it is necessary to provide a large distance between the iron plate 2, in other words, the water curtain, and the object to be painted. Furthermore, since the rear chamber 12 must be provided, the depth of the housing 1 increases, resulting in an increase in the size of the entire device.

In addition, since a part of the paint mist comes out from the front opening of the housing 1 and floats inside the factory as described above, the painting booth is usually placed in a dedicated painting factory separate from the manufacturing or assembly line factory of the objects 9 to be painted. However, when the coating booth is separated from the production line for the objects to be coated in this manner, there are disadvantages in that it takes time to transport the objects to be coated and that running stock is required, resulting in waste.

The present invention was developed to solve the above-mentioned problems, and has an extremely unique structure in which the spray gun, painting chamber, water curtain, and water tank are arranged linearly within the housing, and the housing is made into a sealed structure. To provide a water-washable painting booth that has a simple configuration, improves the working environment, downsizes the entire device, and allows direct connection between a manufacturing line for objects to be painted and a painting line.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 is a longitudinal cross-sectional view showing an embodiment of the flushable paint booth according to the present invention, and FIG. 3 is a cross-sectional view taken along the line II in FIG. 2.

In these figures, what is designated as a whole by the reference numeral 20 is a painting booth, and this painting booth 20 has a front plate 21a, a rear plate 21b, a pair of left and right side plates 21c and 21d, and a top plate 21e.
The housing 21 has a longitudinally long rectangular cross section and is surrounded by a bottom plate 21f.

Inside the housing 21, there are two chambers in the vertical direction, that is, a coating chamber 22 is provided above, an overflow chamber 23 is provided below, and a water tank 24 is provided below.

Further, a to-be-painted object insertion port 25 for inserting a to-be-painted object 26 into the coating chamber 22 is formed in the upper part of the front plate 21a of the housing 20, and this to-be-painted object insertion port 25 is vertically movable. It is opened and closed by a door 27.

The door 27 is suspended by a wire rope 30 whose upper end is connected to a support member 29, and is configured to be able to freely stop at any position by constantly maintaining a state of balance with a balancer 28.

A pair of rails 31 and 32, each having a substantially U-shaped cross section, are installed at the center of the upper part of the painting chamber 22, with both ends fixed to the front plate 21a and rear plate 21b of the housing 20, respectively. Along the rails 31, 32 the spray is provided so that the gun 33 can be moved automatically at a constant speed.

That is, for this spraying, the gun 33 has wheels 34, 35 that rotate along the rails 31, 32, and a cylinder 36.
It is designed to move back and forth in parallel by the drive of.

In this spraying, the gun 33 sprays the paint supplied from the paint tank 37 through the pipe 38, and the spraying is carried out by using compressed air supplied to the gun 33. To uniformly paint the surface of an object 26 to be painted.

The overflow chamber 23 forms a water curtain by bending a pair of bottom plates 40, 41 into a predetermined shape.

That is, one end of each of the bottom plates 40, 41 is fixed to the inner wall of the front plate 21a and the rear plate 21b of the housing 21, and the upper part of the bottom plate 40, 41 is bent at a right angle to form rising walls 40a, 41a. One end thereof is connected by a side plate 42, and the other end is fixed to the inner wall of the side plate 21d of the housing 21.

Further, the upper end portions of the rising walls 40 at 41 a are further bent downward at a certain angle to make the inclined portions be used as overflow plates 43 and 44.

The lower end of the overflow plate 44 is located approximately on the extension line of the lower end of the overflow plate 43, thereby providing a slight gap 45 between both lower ends, and this gap 45 allows the overflow chamber 23 and the water tank 24 to be separated. It communicates.

The rising walls 40a, 41a, the side plates 42, the front plate 21a, the back plate 21b1 and the side plate 21c of the housing 21
, 21d, there is a pump 46 in the U-shaped space surrounded by
Water 47 is constantly supplied by the overflow plates 43 and 44, and this water 47 overflows from the upper ends of the overflow plates 43 and 44, thereby forming a water curtain.

The water overflowing to the overflow plates 43 and 44 falls through the gap 45, is filtered by the filter 48, and is then stored in the water tank 24.

The water in the water tank 24 is filtered again by the filter 49 and then supplied to the overflow chamber 23 by the pump 46.

The coating chamber 22 and the overflow chamber 23 are completely communicated with each other only by installing a hanger 50 for setting the objects to be coated.

Therefore, among the paint mist sprayed by the gun 33, the remaining mist that has not been applied to the object to be painted 26 is captured by the water curtain and guided to the water tank 24 together with water.

Further, the remaining mist that is not captured by the water curtain is forcibly discharged outdoors through the duct 51 together with the air inside the housing 21.

For this reason, the lower end of the duct 51 is communicated with the water tank 24, and an exhaust fan 52 and a filter 53 are disposed therein.

Therefore, when the exhaust fan 52 is operated to create a negative pressure in the water tank 24, the air and remaining mist in the painting chamber 22 are sucked out, and the gap 45 in the overflow chamber 23 and the filter 48, 53 are sucked out.
is discharged from the duct 51 through.

In this case, since a small hole (not shown) is bored in the side plate 21d constituting the overflow chamber 23 at the same height as the overflow plate 43, 44, the overflow chamber The water in 23 overflows and is led into the duct 51, and this water is led to the water tank 24 through the filter 61, so that the filter 48
The mist guided to the duct 51 through the duct is captured.

Note that a filter 5 is provided on the top plate 21e of the housing 21.
4 is provided.

Note that the above configuration is not limited to this in any way,
Of course, various modifications are possible, such as, for example, connecting one end of the lower door 27 to the housing 21 via a hinge so as to be rotatable, or forming the water curtain in a funnel shape.

Furthermore, if the bottom plate 24a of the water tank 24 is provided at an angle, the sludge deposited on the bottom plate 24a will be guided downward along the slope, making recovery work easier.

As explained above, the flushable paint booth according to the present invention is a closed type and has a structure in which the gun, paint chamber, overflow chamber, and water tank are arranged linearly within the housing. It has many effects.

(1) There is no risk of paint mist leaking outside the housing, and the working environment is extremely hygienic.

(2) There is little risk of ignition and fire.

(3) There is no need to wear a dust mask.

(4) Since the painting work is performed automatically, no skill is required and anyone can easily perform it.

(5) Since the device has a linear arrangement structure, the depth of the device can be reduced, and therefore the entire device can be downsized.

(6) Since it is a closed type, the coating booth can be installed in a factory for manufacturing or assembling objects to be coated, thereby eliminating the need to transport objects to be coated or wasting running stock.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a conventional flushable paint booth, FIG. 2 is a vertical cross-sectional view showing an embodiment of a flushable paint booth according to the present invention, and FIG. 3 is the same as that shown in FIG. It is a sectional view taken along the line I-I. 20...Painting booth, 21...Housing, 22...Painting room, 23...Overflow room, 24...Water tank, 25 ...Object to be painted, insertion port, 26...Object to be painted, 27...
Door, 46...Pump, 51...Duct, 52...Exhaust fan.

Claims (1)

[Scope of utility model registration request] a housing having a workpiece insertion port; a door for opening and closing the workpiece insertion port; a spray gun disposed above the interior of the housing; a coating chamber into which the object to be coated is inserted through an insertion opening; an overflow chamber provided below the coating chamber and provided with an overflow plate; a water tank provided below the overflow chamber; a pump that supplies water to the overflow chamber; a duct that has one end communicating with the outside and the other end communicating with the water tank; and a duct that is installed in the duct to make the water tank negative pressure and remove paint mist in the painting chamber from the overflow chamber. A water-washable painting booth characterized in that it is equipped with an exhaust fan that leads to the water tank through the duct and forcibly exhausts the air to the outside from the duct.