JPS6238786Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water-washable painting booth that is small and hygienic and can improve the removal rate of paint mist.

Paint has a large effect on the human body, such as gas poisoning and functional impairment due to organic gases, and as a countermeasure, painting workers wear dust masks while painting, but they can work with peace of mind. It is no exaggeration to say that there is no one.

By the way, as a conventional painting booth of this type, an open front type water-washable painting booth as shown in FIG. 1 is widely used. That is, this flushable paint booth has a housing 1 whose entire front is open, an iron plate 2 disposed almost vertically within 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, and a pump 8 for guiding water to the pipe 3. The water introduced into 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 wearing a dust mask who stands in front of the housing 1 and operates the spray gun 10.
Of the paint mist sprayed from the spray gun 10, most of the remaining mist that has not been applied to the object 9 hits the water curtain and falls together with the water, and is collected in the water tank 5. On the other hand, the remaining mist that was not captured by the water curtain is
The water is sucked into the rear chamber 12 of the housing 1 from between the sloping plate 11 provided at the bottom thereof, and is further filtered by another water curtain 13 before being discharged to the outside from the duct 7. In this way, most of the paint mist that has not been applied to the object to be painted 9 is removed within the housing 1 and is not released outdoors.

However, in such a conventional painting booth, the front surface of the housing 1 is open, and depending on the direction of spraying by the spray gun 10, a part of the paint mist may scatter to the outside and may be harmful to the operator. Not only is the paint floating in the surrounding area, which is not desirable in terms of environmental hygiene, it is also troublesome for workers to wear dust masks, and if the paint mist ignites, it can cause a fire accident. In addition, the depth of the painting booth needs to be set large in order to prevent droplets of water flowing down along the iron plate 2 from splashing onto the object 9 to be coated. Because of this, there was a problem in that the overall size of the device increased.

The present invention was developed in order to eliminate and prevent the above-mentioned conventional inconveniences.The housing is a closed type, and the water overflowing from the water tank located at the lower part of the housing is stirred by a stirring plate and passed through a filter. A water-washable coating designed to improve the working environment and mist removal rate, as well as downsize the entire device, with an extremely simple configuration that connects to the overflow tower and passes through a duct equipped with a filter, shower, and exhaust fan inside. A booth will be provided.

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

FIG. 2 is a partially cutaway front view showing an embodiment of the flushable painting booth according to the present invention. In the figure, a paint booth, generally designated by the reference numeral 20, includes a housing 21 having a longitudinally long rectangular cross section.
A to-be-painted object insertion port 22 is formed in the upper front of the housing 21.
2 is adapted to be opened and closed by a door 24 whose upper end is rotatably connected to the front surface of the housing 21 via a pair of hinges 23.

A freely rotatable rotary joint 25 is suspended above the interior of the housing 21, and a spray gun 26 is disposed. spray gun 26
is configured to be automatically controlled to move at a constant speed, and a pipe 27 is connected from a paint tank (not shown) to
By spraying the paint supplied through the housing 21 downward using compressed air, the surface of the object 9 inserted into the housing 21 is uniformly coated. A water tank 29 with an open top is arranged below the product stand 28 on which the object to be coated 9 is placed, and this water tank 29 is constantly supplied with water 31 by a pump (not shown). is supplied in circulation. Therefore, of the paint mist sprayed by the spray gun 26, most of the remaining mist that has not been applied to the object 29 is absorbed into the water 3 in the water tank 29.
1 and is captured. Since the water tank 29 overflows at a rate of, for example, about 400/min, the captured paint mist can be guided to the overflow passage 32 together with the overflowing water without being stored. The overflow passage 32 is provided around the water tank 29, and a substantially V-shaped stirring plate 33 and a filter 34 are disposed above the overflow passage 32. Water overflowing from the water tank 29 falls onto the stirring plate 33 and is stirred. This stirred water is filtered by a filter 34 and then falls to the lower part of the overflow passage 32, returned to the pump, and supplied to the water tank 29 again.

Ducts 35, 3 are provided on both sides of the housing 21.
6 are provided respectively, and these ducts 35, 3
The lower ends of the ducts 6 communicate with the overflow passage 32, and the upper ends of the ducts 6 communicate with each other to form one duct 37. A shower 38 and a filter 39 are provided inside the ducts 35 and 36, respectively, and an exhaust fan 40 is provided in the duct 37. Therefore, when the exhaust fan 40 is operated to create a negative pressure inside the housing 21, the air inside the housing 21 and the residual mist floating inside the housing 21 are sucked, and the overflow passage 32-
It is forcibly discharged outdoors through ducts 35, 36 and 37. In this case, when most of the residual mist in the housing 21 passes through the overflow passage 32, it is captured by the overflow stirred by the stirring plate 33 and by the filter 34, and the mist flows into the duct 3.
5, 36, and as it passes through these ducts 35, 36, it is further captured by a filter 39 and a shower 38.

That is, the paint booth 20 according to the present invention hits the paint mist sprayed by the spray gun 26 on the water surface of the water tank 29 and captures it, and the housing 2
Overflow passage 3 for paint mist floating in 1
The overflow is stirred by the stirring plate 33 provided in 2, and is filtered twice by the filter 34 and the filter 39 and shower 38 provided in the ducts 35 and 36, thereby improving the mist removal rate. It was designed so that

Note that a filter (not shown) is provided on the top plate of the housing 21, and outside air is taken into the housing 21 through this filter.

As explained above, the flushable painting booth according to the present invention is a closed type, in which the spray gun, the object to be painted, and the water tank are arranged vertically and linearly, and a stirring plate is installed in the overflow passage instead of the water curtain. Because of the arranged structure, there are many effects as described below.

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

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

(3) It is not necessary to wear a dust mask.

(4) Since the painting work is done automatically, no skill is required and the work is easy.

(5) Even when the object to be coated is brought close to the water tank, there is no need for a trowel to splash water droplets on it, allowing good coating to be achieved and the apparatus to be miniaturized.

(6) Double filtering is performed by the stirring plate and filter in the overflow channel and the filter and shower in the duct, so the removal rate of paint mist can be improved (85% or more).

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an example of a conventional flushable paint booth, and FIG. 2 is a partially cutaway front view showing an embodiment of the flushable paint booth according to the present invention. 9...Object to be painted, 20...Painting booth, 21...
...housing, 22... object insertion port, 33...
... Stirring plate, 34... Filter, 35, 36...
Duct, 37...exhaust fan, 38...shower, 39...filter.

Claims (1)

[Scope of utility model registration request] a water tank having an insertion port for the object to be coated and an overflow passage therein; a housing located above the water tank and provided with a product stand on which the object to be coated is installed and a spray gun; A door that can be opened and closed to close the object insertion port, a stirring plate and a filter disposed in the overflow passage, a duct communicating with the overflow passage, and a filter disposed within the duct. A water-washable painting booth characterized by being equipped with a shower and an exhaust fan.