JPS62254866A - Device for recovering atomized paint - Google Patents

Abstract

PURPOSE:To prevent the discharge of atomized paint to the outside and to recover and reuse the paint by providing a sheet air filter for recovering paint supported by a circular rotary frame body between a material to be coated and an exhaust means, and furnishing a soln. tank at the lower part. CONSTITUTION:The atomized paint recovery device 10 is provided between the opening part 4A of the exhaust device 4 and the passage for conveying a material 1 to be coated. The discoid air filter 11 for recovering paint is supported by the circular rotary frame body 12 and made freely rotatable in the atomized paint recovery device 10. The filter is rotated by a driving means 14. The lower part of the air filter 11 is dipped in the soln. in a tank 18 along with the circular rotary frame body 12, and the paint deposited on the air filter 11 is continuously dissolved in the soln. The discharged of the atomized paint to the outside is thus reduced, and the atomized paint can be recovered and reusud.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a spray paint recovery device.

[Conventional technology]

-C, spraying using a spray gun In a painting apparatus, a spray gun for spraying paint onto an object to be painted is arranged on one side, and a painting booth is equipped on the other side. The spray paint sprayed onto the object to be painted is
In addition to forming a coating film on the object to be coated, some of it adheres to the inside of the painting booth, and the rest is currently emitted to the outside through the coating booth.

[Problem that the invention seeks to solve]

In the conventional example described above, the injection material is directly radiated to the outside through the exhaust means, and therefore, if left untreated, it becomes a cause of pollution. Additionally, the amount of paint deposited inside the paint booth is typically as high as or greater than the amount of paint deposited on the object being painted, which reduces the overall amount of paint consumed. The disadvantage was that there were more.

[Purpose of the invention]

SUMMARY OF THE INVENTION The present invention aims to improve the disadvantages of the conventional example, and particularly to provide a relatively small-sized spray paint recovery device that can reduce the spread of spray paint to the outside and enable the recovery and reuse of spray paint. , its purpose.

[Means for solving problems]

Therefore, in the present invention, a planar paint/recovery air filter whose upper part is disposed between the object to be painted and the exhaust means, and this planar paint recovery air filter are installed. The structure includes a supporting circular rotating frame body, and a solution tank that constantly immerses the lower part of the paint recovery air filter in a paint solution and continuously collects adhering paint into the solution. This aims to achieve the above objective.

[First Embodiment] Hereinafter, a first embodiment of the present invention will be described based on FIGS. 1 to 3.

In Figures 1 and 2, ■ indicates the object to be coated, and 2
2A indicates a paint spray gun, and 2A indicates a solenoid valve. The object 2 to be coated is suspended by a hanger 3A and is transported by a transport means 3 in a direction perpendicular to the plane of FIG. 1. Reference numeral 4 indicates an exhaust means installed on the opposite side of the painting spray gun. This exhaust means 4 corresponds to the painting booth in the conventional example described above.

4A indicates an opening on the intake side of the exhaust means. and,
A spray paint recovery device 10 is disposed between this opening 4A and the conveyance path for the object l to be coated.

This spray paint recovery device 10 is configured to be movable and installable as shown in FIGS. 1 and 2, and is generally equipped with a disk-shaped paint recovery air filter 11 and this air filter 11. A circular rotating frame 12 and a support shaft portion 13A that rotatably supports the circular rotating frame 12 at its central axis.

13B, a driving means 14 for rotationally driving the circular rotating frame 12 (see FIG. 1), and a circular rotating frame 12.
It is equipped with a solution tank 18 that accommodates the lower part of the paint recovery air filter 11 attached to the paint recovery air filter 11 together with a circular rotating frame 12, and continuously dissolves and recovers the paint adhering to the paint recovery air filter 11. The structure is as follows.

In this embodiment, the paint recovery air filter 11 is a mesh-like continuous face piece that is assembled and processed so as to be flexible, and is made of a metal member with a relatively fine opening. For this reason, the structure is such that spray paint tends to adhere. The circular rotary frame body 12 equipped with the paint recovery air filter 11 thus formed is made of a metal member and is grounded.

The driving means 14 connected to the circular rotating frame 12 includes a motor 14A, a reduction gear 14B, and a connecting belt means 14C.
It is composed of.

The solution tank 18 is further equipped with a solution circulation mechanism 19 shown in FIG. 4, a paint removal wire brush 30 (see FIG. 2), and a concentration detection means 31 (see FIG. 3). 19A and 19B each indicate piping for the solution circulation mechanism 19, and 20.21 each indicate an on-off valve.

The solution circulation mechanism 19 includes a solution tank 1 as shown in FIG.
This prevents the paint from settling by circulating the paint solution in pipes 19B and 19A in the direction of arrow A.
In addition, it is provided with a foreign matter filtration half-stage 22, a liquid pump 23, and a solution replenishment section 24.

A drive motor 23A is attached to the liquid pump 23. Between the foreign matter filtration half stage 22 and the liquid pump 23,
A solution extraction means 25 is provided. This solution extraction 25 is composed of a manually operable explosion-proof electromagnetic valve 25A, a solution extraction pipe 25B, and a solution extraction tank 25C. Therefore, in addition to being able to take out the solution at will by manually operating the electromagnetic valve 25A, the electromagnetic pulp 25A also activates the pulp control unit 31A when the concentration detection means 31 (described later) detects a predetermined concentration level. The device is configured to perform an opening operation immediately after being opened.

The concentration detecting means 31 is configured to detect the viscosity of the solution using a continuous viscosity measuring means 34, as shown in FIG. 3, and thereby detect the concentration of the paint. This continuous viscosity measuring means 34 detects a preset concentration and is provided with an alarm section 35 that is activated immediately when the switch is turned on.This alarm section 35 is activated as shown in FIG. It is composed of a switching transistor 35A, and a buzzer 35B and a blinking light 35C which are activated by the H& of the switching transistor 35A.Here, R1 and R2 each represent a level adjustment resistor.

One surface of the circular rotating frame 12 and the solution tank 18 is equipped with a mask means 40 that prevents air from flowing over substantially the entire surface except for the ventilation path from the spray gun 2 to the opening 4A of the exhaust means 4. has been done. This mask means 40 is made of, for example, a soft synthetic resin such as transparent vinyl having strong chemical resistance. 40A indicates an opening provided facing the spray gun 2.

Then, by the operation of the exhaust fan 4B installed in the exhaust means 4, the sprayed paint moves as shown by the arrow B in Fig. 1, passes through the paint recovery air filter 11 twice, and then enters the exhaust duct 1-4C. It is guided and dissipated to the outside.

The upper end surface of the solution tank 18 in FIG. 1 is equipped with a lid 28, which effectively suppresses vaporization of the solution. This lid 28 is formed with a through hole 28A through which the paint recovery air filter 11 described above passes, and the paint recovery air filter 1 of this through hole 28A is further formed.
A solution removing means 28C formed of a wire brush or the like is attached to the delivery side portion of 1.

Additionally, an ultrasonic cleaning device (not shown) is provided in the solution tank 18.
is equipped to wash away paint build-up. 32 indicates an explosion-proof ultrasonic oscillator.

Next, the recovery operation of the sprayed paint in the first embodiment will be explained.

First, when the entire apparatus is activated and the coating work on the object 1 to be coated is started, the solution (for example, thinner) in the solution tank 18 is
Due to the action of the solution circulation mechanism 19 described above, it moves slowly from the left side to the right side in FIG. At the same time, due to the rotation of the circular rotating frame 12 and the accompanying movement of the paint recovery air filter 11, the solution is effectively and constantly stirred as a whole without waiting for the dissolved paint to settle.

On the other hand, since the sprayed paint is sucked and moved in the direction B in FIG. 1 with the operation of the exhaust means 4 as described above, substantially the entire amount passes through the paint recovery air filter 11. For this reason, the sprayed paint is effectively attached to the air filter 11 for collecting paint, and as a result, the amount of the paint dissipated to the outside is significantly reduced.

The paint adhering to the paint recovery air filter 11 is efficiently dissolved in the solution in the solution tank 18.

Therefore, the paint collecting air filter 11 continuously collects the sprayed paint in the air filter portion where almost no paint adheres.

When the paint components in the solution increase and the viscosity of the solution increases and reaches a predetermined level of viscosity, the viscosity continuous measuring means 34 shown in FIG. 3 is activated and the solution in the solution tank 18 is taken out. It is taken out from the means 25 to the outside. During this time, the operation of the liquid pump 23 is stopped. When the removal operation of the solution is completed, a new paint solution is supplied from the solution supply section 24 by an operator or the like.

On the other hand, since the solution taken out is in a state in which a certain amount of paint is dissolved, it can be reused as it is as a paint liquid for spray paint by adding a small amount of paint to it.

As a result, overall paint consumption can be drastically reduced, and the amount of spray paint released to the outside can be reduced.
This method has the advantage that there is almost no need to incinerate the paint adhering to the paint booth, which has been done in the past.

Further, in this embodiment, the circular rotating frame 12 is formed of a metal member and is grounded, so that the paint recovery air filter 11 is also always grounded. On the other hand, the sprayed paint released into the air is charged with floating charges floating in the air and becomes slightly electrically charged.

Therefore, the sprayed paint efficiently adheres to the paint recovery air filter 11. In experiments, we were able to obtain an average increase in adhesion of approximately 4.5% (weight increase) when not touching the ground. Therefore, when this is used for electrostatic painting, it is difficult to use the conventional 2
It is now possible to sufficiently adhere and collect more than twice as much paint, and the amount of paint components released to the outside can be significantly reduced.

In addition, in this first embodiment, since the rotating part is supported at one place, maintenance and inspection of the equipment is facilitated, and the width of the solution tank 18 can be set to be extremely small, so that the amount of solution used at one time can be compared. It has the advantage of being able to reduce the number of targets. Furthermore, since the paint recovery air filter 11 is immersed in the solution tank 18 for about 1/2 of one rotation, it is possible to take a longer time to recover the adhered paint in the solution.

In addition, the part that has been removed from the 18 parts of the solution tank should be immediately sprayed with M.
It is located in the path of the paint, and as a result, the sprayed paint is often deposited with a small amount of solution attached, which eliminates the solidification of the deposited paint and makes it easier to recover the deposited paint as a solution. There is an advantage.

[Second example] Next, a second embodiment will be explained based on FIG. 4.

This second embodiment uses three circular rotating frames 80, whereas the first embodiment described above uses one circular rotating frame 12, and these are arranged as shown in FIG. It is equipped. The rest of the structure is the same as that of the first embodiment described above.

Even in this case, in addition to having the same effect as the first embodiment described above, the height can be particularly reduced, and in this respect, it is possible to downsize the equipment. It has the advantage that the mouth can be set larger, and therefore it can accommodate higher line speeds.

In each of the above embodiments, the paint recovery air filter 11 is particularly made of a conductive material, but it does not necessarily have to be made of a conductive material, nor does it need to be particularly flexible. Further, as a method for measuring the solubility of the paint in the solution in the solution tank 18, the case where the continuous viscosity measuring means 34 is particularly used has been exemplified, but the present invention is not necessarily limited to this. It may also be configured such that it can be used to measure the concentration of a solution and to constantly output the change as a predetermined signal change. Further, although the case where the paint recovery air filter 11 is attached to the entire surface of the circular rotating frame body 12 has been illustrated, the present invention is not necessarily limited to this. The recovery air filter 11 is installed, and the drive means 14
The rotation may be changed manually and used without depending on the rotation. As for the drive means 14, even if the air filter 11 for collecting paint is provided on the entire surface of the circular rotating frame 12, it may be unnecessary, especially when a small amount of intermittent paint work is performed. Further, the driving means 14 may be configured to drive the outer peripheral portion of the circular rotating frame 12.

Further, in each of the above embodiments, the spray gun 2 is fixed, but the present invention is not necessarily limited to this. For example, the spray gun 2 may be moved up and down during electrostatic painting, or may be Even if it is a portable type of painting using manual operation of a gun, it can be applied in its entirety.

〔Effect of the invention〕

Since the present invention is constructed and functions as described above, it is possible to continuously and effectively collect and use the sprayed paint that did not contribute to the formation of a coating film on the object to be painted, and therefore to release it to the outside. Not only can the emission of spray paint be significantly reduced, but also the overall consumption of paint can be significantly reduced, the equipment is simpler and the amount of solution in the solution tank used at one time is also lower. It is possible to provide an unprecedented and excellent spray paint recovery device.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing the first embodiment of the present invention, FIG. 2 is a partially sectional front view showing the spray paint recovery device portion of FIG. 1, and FIG. FIG. 4 is a configuration diagram showing an example of the solution circulation mechanism and concentration detection means that are installed, and FIG. 4 is a front view showing the spray paint recovery device portion in the second embodiment. 1...Object to be painted, 4...Exhaust means, 1
1... Air filter for collecting waste, 12...
...Circular rotation i and body, 14...Driving means,
18...Solution tank. Patent applicant: Takahashi Painting Industry Co., Ltd. (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4

Claims (5)

[Claims] (1) A planar paint recovery air filter whose upper portion is disposed between the object to be painted and the exhaust means, and a circle to which the planar paint recovery air filter is attached and supported. A spray paint recovery device comprising a shape rotating frame body and a solution tank for constantly immersing the lower part of the paint recovery air filter in a paint solution and continuously recovering adhering paint into the solution. (2) The spray paint recovery device as set forth in claim 1, wherein the paint recovery air filter is constructed of a relatively fine metal mesh member. (3) The spray paint recovery device as set forth in claim 1, wherein the paint recovery air filter is made of curtain-like conductive plastic with sufficient air permeability. (4) A planar paint recovery air filter whose upper portion is disposed and used between the object to be painted and the exhaust means, and a circle to which the planar paint recovery air filter is attached and supported. The paint collecting air filter is equipped with a shape rotating frame body and a solution bath for constantly immersing the lower part of the paint collecting air filter in a paint solution and continuously collecting the adhering paint into the solution, the paint collecting air filter being electrically conductive. What is claimed is: 1. A spray paint recovery device characterized in that the spray paint recovery device is formed of a member and the paint recovery air filter is grounded. (5) A planar paint recovery air filter whose upper portion is disposed between the object to be painted and the exhaust means, and a circle to which the planar paint recovery air filter is attached and supported. A drive device that rotates the circular frame, comprising a rotating frame body, and a solution tank that constantly immerses the lower part of the air filter for collecting paint in a paint solution and continuously collects the adhering paint in the solution. A spray paint recovery device characterized in that a means is connected to the circular frame.