JP2601174Y2 - Immersion washing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an immersion rinsing apparatus used in a pretreatment step of electrodeposition coating, and more particularly to an immersion rinsing apparatus capable of effectively removing bubbles generated in a rinsing tank.

[0002]

2. Description of the Related Art Conventionally, as pretreatments for electrodeposition coating for undercoating of automobiles, there are a degreasing step for removing oil and dust adhering to the surface and a chemical conversion step for forming a phosphate film. The treatment step is carried out, for example, by immersing the article in a zinc phosphating solution tank.If the electrodeposition coating is subsequently performed, a good coating is obtained if the chemical conversion treatment liquid remains on the article. Since a film is not formed, it is necessary to sufficiently wash with water after the chemical conversion treatment.

Conventional water washing after chemical conversion treatment is carried out by spray washing and then immersing in a water washing tank. The configuration of such a washing tank will be described with reference to FIG. 5. 1 is a washing tank, 2 is a hanger conveyor, and an automobile body 3 suspended on the hanger conveyor 2 is immersed in the washing tank 1. It is transported to the draining and drying process. Spray risers 4 and 5 are provided on the entrance side and the exit side of the washing tank 1, respectively.
The water washing effect is enhanced.

[0004]

However, when the spray risers 4 and 5 hit the surface of the washing tank 1, foams containing garbage and oil dropped by the spray risers 4 and 5 were generated.
Oil and debris together with air bubbles floating on the surface of the body 3
If the tank is removed in a state where it adheres to the surface, coating defects such as lumps occur in the subsequent coating process. In order to solve such a drawback, the above-mentioned dust and oil are removed by the outlet side spray riser 5, but they cannot always be completely removed.

SUMMARY OF THE INVENTION In view of the drawbacks of the prior art, an object of the present invention is to provide an immersion rinsing apparatus capable of effectively preventing bubbles floating on the surface of a rinsing tank from adhering to an automobile body or other body to be washed. I do.

[0006]

Means for Solving the Problems The present invention is washing tank odor
And the water-washed body 3 on the side of the outlet for discharging the body 3 to be washed.
Placed almost horizontally above the surface of the tank
Te, the fluid jetting means 6 for generating a surface flow toward the Iriso portion side from the Deso side provided, retractable so that to constitute a floating froth on Deso unit surface Iriso side by surface flow It is characterized by.

It is not preferable that the jetting means 6 accelerates the generation of bubbles by jetting the fluid. It is preferable that the jetting means 6 jets the fluid at a low pressure and in a trumpet shape. When the jetting means 6 is arranged on the surface of the washing tank 1, it is preferable to arrange the jetting means 6 horizontally or slightly inclined downward. In this case, the fluid ejected from the ejection means 6 may be either air or water.

[0008]

In accordance with the such a technical means, wherein the ejection means 6 Water
The bubbles are pushed to the tank side by the surface flow generated by ejecting the fluid to the surface layer of the washing tank, and the bubbles disappear from the surface of the tank. Without this, it is possible to completely prevent defective coating due to the adhesion of bubbles in the subsequent coating process.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; However, unless otherwise specified, dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. Not just. FIG.
1 shows an immersion rinsing device according to an embodiment of the present invention. The rinsing tank 1 has a boat-shaped cross section, a rectangular water retention section 11 is provided on the entry section side, and a groove section is provided on the side wall surface of the retention section 11. 12 is provided, and the groove 12 communicates with the drain 13. Reference numeral 2 denotes a hanger conveyor, and an automobile body 3 suspended on the hanger conveyor 2 is immersed in the boat-shaped portion of the washing tank 1, and then lifted from the tank section side and conveyed to a draining drying step and a coating step. Spray risers 4 and 5 are provided on the inlet and outlet sides of the washing tank 1, respectively.
Reference numeral 5 is connected to a pure water pipeline 20 via valves 15 and 16, respectively. Further, a surface flow riser 6 is attached at a position slightly above the water surface on the outlet side of the washing tank 1, and a pure water pipe 201 is connected to the surface flow riser 6 via a valve 17.

FIG. 2 shows a planar arrangement of the surface flow riser 6. A pipe 201a extends along an end wall of the washing tank 1 on the outlet side of the washing tank 1 along the end wall. Six surface flow risers 6a are attached to the tank 1 side parallel to the longitudinal direction of the tank 1. The pipes 201b are also provided on both sides of the side wall on the outlet side, and six surface flow risers 6b are attached to the pipes 201b at a predetermined angle toward the inlet.

FIG. 3 shows the arrangement of the surface flow risers 6a and 6b in a vertical cross section. The surface flow risers 6a and 6b are both horizontally disposed slightly above the water surface of the washing tank 1. The pipe 201b disposed on the side wall and the pipe 201a disposed on the end wall are connected via the hose 21 and the valve 19.

FIG. 4 is an enlarged view of the surface flow riser 6, in which the tip is slightly spread on the trumpet, and the water flow jetted from the surface flow riser 6 is expanded and jetted onto the water surface.

According to this embodiment, the pure water adjusted to a predetermined pressure by the valve 17 is supplied to the respective surface flow risers 6a and 6a.
By jetting from the outlet part side to the inlet part side through 6b, a surface flow is generated from the outlet part side to the inlet part side,
By the surface flow, the bubbles floating on the surface of the outlet section are pulled back to the inlet section side, and the returned bubbles are retained in the retaining section 11 on the inlet section side.
Is drained out of the water tank through a drain 13 through a groove 12 provided in the tank. As a result, foaming does not adhere to the vehicle body 3 or the like when leaving the tank, and coating defects caused by foaming adhesion in the subsequent painting process can be completely prevented.

[0014]

[Effects of the Invention] As described above, according to the present invention,
In such a configuration, for example, the bubbles on the outlet section side where the automobile body exits can be eliminated, so that the bubbles floating on the surface of the washing tank can be effectively prevented from adhering to the body, and in the subsequent coating process, Coating failure due to foam adhesion can be completely prevented. And so on.

[Brief description of the drawings]

FIG. 1 is an overall view showing an immersion rinsing apparatus according to an embodiment of the present invention.

FIG. 2 shows a planar arrangement of a surface flow riser in the washing tank of FIG.

FIG. 3 shows a vertical cross-sectional arrangement of a surface flow riser in the washing tank of FIG.

FIG. 4 shows the shape of the surface flow riser of FIG.

FIG. 5 is an overall view showing a immersion water washing apparatus according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rinse tank 3 Rinse body (automobile body) 6, 6a, 6b Fluid ejection means (surface flow riser)

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B05C 9/10 B05C 3/09-3/10 B08B 3/10 B60S 3/00 C23G 3/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A flushing tank , in which a body to be flushed after flushing is discharged from the flushing tank , at a position slightly higher than a water surface of the flushing tank .
Are substantially horizontally disposed location, provided the fluid jetting means for generating a surface flow toward the Iriso portion side from the Deso side, Iriso side floating froth on Deso part surface by surface flow Immersion flushing device characterized in that it can be pulled back to