JPH0978271A - Washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a compact washing device with which a washing treatment is executable at a high speed by using the min. required aq. soln. and the space efficiency is high. SOLUTION: This washing device has a treating vessel 5 having a slit 4 through which a material 3 to be treated passes, a storage tank 2 arranged below this treating vessel 5 and a pump 6 for supplying a soln. 1 stored in this storage tank 2 to the treating vessel 5. The treating vessel 5 is internally provided with plural flow regulating plates 7. The aq. soln. 1 supplied from the storage tank 2 to the treating vessel 5 is subjected to flow regulation by the respective flow regulating plates 7. The aq. soln. 1 subjected to the flow regulation is dropped by gravity toward the material 3 to be treated, by which the surface of the material 3 to be treated is washed at a high speed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning apparatus using a water-based solution, and in particular, various cleaning treatments such as degreasing, pickling, neutralizing and rinsing as pre- and post-processes when plating a hoop-shaped material to be treated. It relates to a cleaning device suitable for performing.

[0002]

2. Description of the Related Art As a conventional example of this type of cleaning device, a hoop-shaped material to be treated is immersed in an agitated aqueous solution to perform cleaning treatment on the surface of the material to be treated. The cleaning device is used. This "immersion stirring type" cleaning device includes a storage tank for storing an aqueous solution, a processing tank disposed above the storage tank, and a pump for supplying the aqueous solution from the storage tank to the processing tank.
Slits for passing a hoop-shaped material to be processed are formed on the outer walls of the processing tank which face each other.

In such a known cleaning apparatus, the pump supplies the aqueous solution in the storage tank to the processing tank, and the excess amount of the aqueous solution supplied to the processing tank flows out from the slit and is returned to the storage tank. A fresh aqueous solution is constantly circulated in the tank. The surface of the material to be treated is washed by immersing the material to be treated in the aqueous solution stirred in the treatment tank while transferring the material to be treated horizontally in the treatment tank. Was there.

[0004]

However, in the above-mentioned conventional cleaning apparatus, since the aqueous solution is merely circulated between the storage tank and the processing tank, the vicinity of the center of the processing tank and the slit are As a result, the components of the aqueous solution became non-uniform, and the cleaning treatment required a relatively long treatment time. Therefore, the treatment tank must be set long along the feed direction of the material to be treated, and there is a problem that the entire cleaning apparatus becomes large.

As another cleaning device, a cleaning device called a "spray system" for spraying a high-pressure aqueous solution onto a material to be treated has been put into practical use. Such a cleaning device can perform the cleaning process at a higher speed than the above-mentioned "immersion stirring type" cleaning device, but since the water-based solution is widely scattered to the surroundings, the cleaning device is used to prevent the scattering. There was a problem of increasing the size. Further, since the amount of the aqueous solution used is large, there is a problem that running cost is high.

The present invention has been made in view of the circumstances of the prior art, and an object thereof is to perform a cleaning process at a high speed using a necessary minimum amount of an aqueous solution, and to achieve a space-efficient compact. To provide a simple cleaning device.

[0007]

In order to achieve the above object, the present invention provides a treatment tank having a plurality of flow straightening plates inside,
A storage tank arranged below the processing tank, and a pump for supplying the aqueous solution stored in the storage tank to the processing tank, a hoop-shaped material to be processed is passed horizontally in the processing tank, The water-based solution supplied to the treatment tank is rectified by the respective rectifying plates and naturally dropped toward the material to be treated, whereby the surface of the material to be treated is subjected to a cleaning treatment. There is.

[0008]

[Function] The aqueous solution stored in the storage tank is supplied to the processing tank at a constant flow rate by the pump, is rectified by a plurality of straightening plates inside the processing tank, and then naturally drops from the upper portion of the processing tank to the storage tank. Return. At that time, since the hoop-shaped material to be treated is filled with the water-based solution that naturally falls, when the material-to-be-treated is transferred in the horizontal direction in the treatment tank, the rectified water-based solution moves on the surface of the material to be treated. It flows and is washed at high speed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a processing tank provided in a cleaning apparatus according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing the overall configuration of the cleaning apparatus.

The cleaning apparatus of the present embodiment is for alkaline degreasing, and as shown in FIG. 2, a storage tank 2 for storing an aqueous solution 1 containing an alkaline degreasing agent and the like, and a hoop arranged above the storage tank 2. Processing tank 5 having a slit 4 through which a material 3 to be processed made of a metal plate is formed, and the processing tank 5 from the storage tank 2
And a pump 6 for supplying the solution 1 to the above.
As shown in FIG. 1, the processing tank 5 is provided with a pair of rectifying chambers 8 having a plurality of rectifying plates 7, and the rectifying chambers 8 face each other through the slit 4.

Next, the operation of this embodiment will be described.
The hoop-shaped material 3 to be processed is transferred in a direction orthogonal to the paper surface of FIGS.
Passes through the slit 4 of the processing tank 5 and is moved in the horizontal direction. The water-based solution 1 stored in the storage tank 2 is supplied from the lower end of the rectifying chamber 8 into the processing tank 5 by the action of the pump 6, reaches the upper end of the rectifying chamber 8, and then naturally falls into the slit 4. It is returned to the storage tank 2. At that time, as shown by the arrow in FIG. 1, since the water-based solution 1 is rectified stepwise by the plurality of rectification plates 7 in the rectification chamber 8, the components of the water-based solution 1 that naturally fall into the slits 4 are uniform. It is arranged in the thing. Therefore, the rectified water-based solution 1 is supplied to the material 3 to be processed which passes through the slits 4, so that both surfaces of the material 3 to be processed are alkali-degreased.

Thus, in the above embodiment, the storage tank 2
The aqueous solution 1 supplied to the processing tank 5 from the above is rectified stepwise by the plurality of rectification plates 7 in the rectification chamber 8, and then naturally dropped from the upper end of the rectification chamber 8 to supply the liquid to the material 3 to be treated. Therefore, the components of the aqueous solution 1 supplied to the material 3 to be treated are made uniform, and the material 3 to be treated can be degreased with alkali at a high speed. That is, even if the immersion time in the aqueous solution 1 is shortened, the material 3 to be treated can be effectively degreased with alkali, so that the length of the storage tank 2 or the treatment tank 5 can be shortened in the feeding direction of the material 3 to be treated. Compared to the "immersion stirring type" cleaning device, it is possible to achieve a large size reduction. Also,
The management of the aqueous solution 1 itself and the processing conditions such as the liquid temperature and the concentration are relatively easy, and the frequency of exchanging the aqueous solution 1 can be reduced, so that the running cost can be reduced. Further, compared to the conventional "spray-type" cleaning device, it is not necessary to prevent the water-based solution 1 from being scattered around, so that it is possible to achieve a large size reduction.

According to the result of the applicant's alkaline degreasing using the above cleaning apparatus, the aqueous solution 1 has a concentration of 1
Using a solution containing 5 to 20% by volume of alkaline degreaser,
When the liquid temperature is 50 to 60 degrees Celsius, an alkaline degreasing effect was recognized in a treatment time of about 3 seconds, but this treatment time is about one-third of that of the conventional "immersion stirring method" cleaning apparatus .

In the above embodiment, the cleaning device for alkaline degreasing was described as an example, but the present invention is not limited to this.
Similar effects can be obtained in the case of each of the cleaning devices for acid treatment, cyanation neutralization, and water washing. For example, when an acid treatment is carried out by the cleaning apparatus of the present embodiment, according to an experiment conducted by the applicant, when sulfuric acid having a concentration of 1.5 to 5.5 N is used as the aqueous solution 1 and the liquid temperature is room temperature. The effect of acid treatment was recognized with a treatment time of about 0.1 seconds. Further, when a cyanide neutralization treatment is performed by the cleaning apparatus of this embodiment, a potassium cyanide solution having a concentration of 10 to 30 g / L is used as the aqueous solution 1, and when the liquid temperature is room temperature, the treatment time is about 0.1 second. Has a cyanide neutralizing effect, and when water is used for washing with the washing apparatus of this embodiment, water is used as the aqueous solution 1, and when the liquid temperature is room temperature, the washing time is about 0.1 seconds. It was effective.

[0015]

As described above, according to the present invention,
After the water-based solution supplied from the storage tank to the processing tank was rectified stepwise by a plurality of straightening plates, the water-based solution was supplied to the material to be processed by letting it fall naturally and supplying the liquid to the material to be processed. The components are homogenized, and the material to be treated can be washed at high speed. As a result, the storage tank and processing tank are greatly shortened in the feeding direction of the material to be processed, and the cleaning device can be greatly downsized, and the cleaning process can be performed efficiently with the minimum amount of aqueous solution, and the running cost can be reduced. Can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a processing tank provided in a cleaning apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an overall configuration of the cleaning device.

[Explanation of symbols]

 1 Aqueous Solution 2 Storage Tank 3 Material to be Treated 4 Slit 5 Treatment Tank 6 Pump 7 Rectifier Plate 8 Rectifier Chamber

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isamu Kawashima 1-7 Yukiya Otsuka-cho, Ota-ku, Tokyo Alps Electric Co., Ltd.

Claims (1)

[Claims] 1. A processing tank having a plurality of straightening vanes therein,
A storage tank disposed below the processing tank, and a pump for supplying the aqueous solution stored in the storage tank to the processing tank, a hoop-shaped material to be processed is passed horizontally in the processing tank, It is characterized in that the water-based solution supplied to the treatment tank is rectified by the respective rectifying plates and spontaneously dropped toward the material to be treated so that the surface of the material to be treated is washed. Cleaning equipment.