JPS58159865A - Purifier for air containing paint mist of painting booth - Google Patents

Abstract

PURPOSE:To provide a titled air purifier which is improved in the efficiency of separating paint mists, by disposing horizontal or approximately horizontal colliding surfaces in plural upper and lower stages in the downward flow passage for air contg. paint mists so as to force the water for purification to flow down from the ends on the side opposite to the separating end of the air flow to the colliding surfaces in the next stages in the respective stages. CONSTITUTION:A body 10 to be painted, such as an automotive body, placed on a carriage 11 is disposed on a grating floor 9 in a painting booth 7. The air contg. paint mists after painting of the body 10 is guided downward along guide plates 20, 20 in a flow passage 19. The air contg. said mists is fed to the lower parts of the bottom ends 21, 21 of the plates 5 and is further fed together with water 12 for purification from the ends opposite to the separating ends for the air flow to the colliding plates 5 in the next stages in the plural upper and lower stages. During this time, the air flow is separated from the mists at the separating ends on the outer side of plates 6, to separate the mists together with the water W for purification. The mists are streamed downward into a discharge groove 17, from which the mists are discharged.

Description

[Detailed Description of the Invention] *S = Stroke-containing air purification% 1 of unreleased #4ri soba booth
Regarding 1.

In order to avoid excess paint mist from overspraying in the spray booth and from adhering to the booth, and especially from worsening the working atmosphere and noise, The next L-husband is killed.

■ A suction of clean 9 air is formed on the ceiling of the booth.

(2) A grating floor is used, and a duct (I# air plenum) with a proa is installed to suck in air containing paint mist from below and discharge the clean air after paint mist removal to the atmosphere.

■ The F of the grating floor is installed upstream of the blower.
Finally, by bringing paint mist-containing air into contact with purifying water, the mist in 9IL is collected in the purifying water, thereby converting it into clean air.

■ Collect the paint mist (sludge), lead it to the tank, clarify it, and then use it with a pump. 66 As a method of contacting the Ik filtration mist (containing sludge) with water for purification. Conventional - f&,! The target method in Figure 1 and the second
The variable method shown in the figure, or the heating method shown in Figure 4 of Figure 8 is used. In these figures, the prisoner is air containing paint mist, (W) is water for purification, ill is the target plate,
ill is a direction change plate. Each of these V types has its advantages and disadvantages, but all of them are insufficient in terms of paint mist efficiency, especially when the particle size is small.

This is because the separation of microorganisms is incomplete.

Unissued #4 is intended to correct this problem.

The model of FIG. 5 will be considered within the range to which Stokes' resistance law can be applied. In this figure, (3) is the inner surface of the concave dormitory containing purification water and paint mist, +41rr, its entrance, +01
is the center of curvature in the dormitory (ii + $l, (α) is the effective central angle,
tRl is the effective radius t obtained by subtracting the % of the width tbl of the entrance (4) from the radius of curvature of the dormitory 1 (3), and lvl is the airflow velocity i at the population (4). If we ignore the deceleration of the airflow as a -order approximation, and let R) b, then the mist particles will be affected by the centrifugal force with a radius of 10,000,000 times as the center angle (α) radians changes over the darkness. Move to the distance X tdl.

d: particle diameter (1&J
(pp: particle livestock farming [(enjJ p: gki livestock production [Seiso] shi: 1 viscosity coefficient of t2* [gin-] When X(dc) = b, dc = particle with trapping critical diameter d>dc is captured.

d(dc particles are cut into the airflow.

That is, particles with small diameters are difficult to capture.

Therefore, in order to reduce the critical trapping diameter da to a smaller value f, use the above formula (Rikori, A) and increase α. In other words, 4 is the effective width (L) and large K
Fru.

(ol
Divide ILRt.

Bisai vl big VC.

This is because, considering that the field of the target method is tLl k during the effective period, n, d and f are assumed to be large, that is, α・(R+b/g)=L, so Equation (1) can be expressed as follows.

Of the above mountains, (b) and bi1, the present invention is 4) and (b).
It is 7t% with emphasis on.

Air purification equipment containing paint mist by unreleased l11rc.

A horizontal or nearly horizontal collision occurs in the flow path of the bottle mist-containing air circulating downward. There are several stages, each stage and the separating end of the air flow are arranged upside down to allow purifying water kfiF to flow from the opposite end to the next impingement surface.

There are a plurality of stages of collision surfaces, which are the liquid separation and trapping surfaces for the paint mist particles, dividing the paint mist-containing air end R into a plurality of Vc'I+.

The 9LH width has therefore been reduced on the individual impact surfaces. In addition, the total width of one impact surface of all stages has been increased. In other words, the above measures (a) and (b) t and %
Since the trapping critical diameter of mist particles CdC)k
It is possible to make f considerably smaller than before, and [r rkJ
It has been possible to improve the mist separation efficiency and reduce the critical diameter of trapped particles by simply improving the structure.

It should be noted that there is no problem in implementing the present invention in combination with Countermeasure B1.

Suitable for uninvented! 011]
First example. 91 figures, chant 7 figures.

+71 d Painting 9 booths, (8) C walls, ill ri grating floor, - C Jiyo Hui bodies etc.,
En is a white breath, all is a ladder to purification water supply, am is ff
Washing 11 (tray) tilts gently downward at the same level as the IF port.

A4 is a series of long partitions gJIIjl, ■ is a diagonal bottom plate, reference η is a drainage ditch, osr! This is the duct leading to the exhaust plenum. The dashed line indicates the flow of wheat f IAI rj air, and the flow of water on the back machine tW+. Dotted alpha mist particles.

R path of 9 qi containing paint mist heading toward αIrjF.

When the flow path is reshaped in A and @, the water for purification overflows into T.
This is the information board inside the i'F dormitory. The dormitory odes and all are a long series. fillQII has a rectangular shape with S length in cross section. The lower end of the dormitory interior board A.- is bent inward. Fill@It・in the dormitory 1It-・-
31I's Doman, upper F da relative, upper movement kli thrust cff
In the upper three stages where the inl tor target plates (. There has been an outpouring of criticism.

Each plate (6) in the second stage of mounting is symmetrical about the central axis. The plate 181H has a very thin rectangular shape. Further, the separation end of the empty gL flow is on the outside, and is directed upward or tilted.

It is better to coat the surface with a substance that prevents the adhesion of paint particles, such as VC Teflon, from collision [1j+jl].

11) Second example. ! Figure 8.

? The fi flow path is formed by a bow-shaped guide plate.

It has an annular shape that shares the central axis of the upper two stages of the tolrt plates, and has a circular shape that is concentric with the plate 161fl of the most FJ stage. There are cases where multiple cylinder-ring systems like this are arranged in parallel, and when the diameter is large.

In some cases, there is only one.

In addition, the number of stages of plates (6) in any of the "-" is arbitrary.

Ru.

4. Brief explanation of the drawing,
- Figures 1 to 4 are cross-sectional views of conventional examples, Figure 5 is a model diagram explaining inertial separation, Figures 6 to 8 are uninvented '4 I4 Sonoichi For example, the +Il・
...Collision surface, alpha air flow path.

Claims (1)

[Scope of Claims] ■ Paint in a painting booth which is arranged and formed on a horizontal or almost horizontal protruding surface in the air containing paint mist circulating downward. 4 fg including mist
! Air purification**. (1frr collision l) (4I#IIf all of the sets are on the same side of each overflow tank.) The air purification device containing paint mist in the coating booth of the distribution panel. Among the dQti1 groups, there are two t's other than the bottom row symmetrically with respect to the central axis of the nitrogen flow path 1a.
, and the one on the bottom row is composed of one - which is almost symmetrical with respect to the central axis.
The paint mist room a air purification device for the paint booth described in item 10. ■ Said! The air R-1 has a cylindrical shape, and all of the thrusters 111 other than the jlF stage have an annular shape with air flow paths - and -3 or almost -3, and the lowest stage is the air flow path U-3. To Mikamata d is a circular shape of I4L, including 1 fg of spray mist in the paint booth described in the patent #wanted wags @ section! Air purification%
consideration. (6) Said air R1! The mercenary is horizontal IFrrkU and has an elongated rectangular shape, and the front tIi! , the collision surface (6) both have an elongated rectangular shape in plan view.