JP2002320934A - Ultrasonic washing method using electrolytic alkali water and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To demonstrate a more perfect washing effect by fully demonstrating a washing effect of electrolytic alkali water and a washing effect of ultrasonic, respectively. SOLUTION: Electrolytic alkali water which is electrolyzed in an electrolytic tank 1 is transmitted to a washing tank 8 which has an ultrasonic generator 20. By doing so, the electrolytic alkali water is bubbled by an air bubbling device T, when various manufactured goods and parts are washed by ultrasonic washing method.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to various processed products in the fields of machinery, metal, electronics, etc.
Also, the present invention relates to an ultrasonic cleaning method using electrolytic alkaline water suitable for cleaning various components and an apparatus therefor.

[0002]

2. Description of the Related Art A technique for cleaning various processed products using electrolytic alkaline water has been disclosed in, for example, Japanese Patent Application Laid-Open No.
No. 73409 discloses a “method and apparatus for cleaning a ferrite product”. In addition, in the “method for cleaning and degreasing aluminum parts and the like” described in JP-A-8-269755, the parts are immersed in a cleaning tank and bubbling is performed from below to perform rough cleaning. Further, there is disclosed a degreasing cleaning method of performing degreasing by ultrasonic cleaning.

[0003]

The "method and apparatus for cleaning a ferrite product" described in the above-mentioned publication has an adverse effect on human bodies and the environment, such as organic solvents and detergents for cleaning. Without using any chemicals,
Since the cleaning is carried out using the cleaning power of electrolytic alkaline water, it is suitable and convenient as a cleaning agent. However, the cleaning power is lower than that of the above harmful detergents and chemicals. In this case, it is necessary to heat or brush, which is complicated in use.

[0004] Further, the "method for cleaning and degreasing aluminum parts and the like" described in the latter publication uses pure water and passes air through a plurality of immersion tanks while bubbling air. , Which removes contaminated water from parts by applying ultrasonic waves and does not use any chemicals that have an adverse effect on the human body or the environment. Therefore, it is suitable for use. As compared with the case where the cleaning was performed, the cleaning power was still insufficient.

Therefore, it has been considered to improve the cleaning power by using a method in which the cleaning power of the electrolytic alkaline water and the ultrasonic cleaning are combined. However, hydrogen gas generated during electrolysis is dissolved in the electrolytic alkaline water,
Since ultrasonic waves could not be spread over the entirety of the alkaline water and allowed to act, sufficient cleaning effects could not be exerted.

Accordingly, it is a technical object of the present invention to provide a more complete cleaning effect by sufficiently exhibiting a cleaning effect of electrolytic alkaline water and a cleaning effect by ultrasonic waves.

[0007]

Means taken to solve the above-mentioned technical problems in the present invention are as follows.

(1) An ultrasonic cleaning method for cleaning various processed products and parts using electrolytic alkaline water,
Raw water formed by adding a sodium compound or a potassium compound to tap water is electrolyzed by placing the inside in an electrolytic cell partitioned into an anode chamber and a cathode chamber by a diaphragm, thereby producing alkaline water on the cathode chamber side, After bubbling air with respect to the generated electrolytic alkaline water, ultrasonic cleaning is performed or provided as ultrasonic cleaning water. (Claim 1)

(2) Tap water or pure water to which an electrolyte is added is supplied to an electrolytic cell partitioned into an anode chamber and a cathode chamber each having an electrode by a diaphragm, and electrolysis is performed. An ultrasonic cleaning apparatus using electrolytic alkaline water configured to ultrasonically clean various processed products and parts by sending generated electrolytic alkaline water to a cleaning tank provided with ultrasonic generating means. Then, an air bubbling unit is provided in the cleaning tank, and after the electrolytic alkaline water is bubbled by the air bubbling unit, the ultrasonic generation unit is operated to perform ultrasonic cleaning. (Claim 2)

(3) Tap water or pure water to which an electrolyte is added is supplied to an electrolytic cell partitioned into an anode chamber and an anode chamber each having an electrode by a diaphragm, and electrolysis is performed. By sending the generated electrolytic alkaline water to a cleaning tank equipped with an ultrasonic generator through an electrolytic water supply pipe, the electrolytic alkaline water configured to ultrasonically clean various processed products and parts was used. An ultrasonic cleaning apparatus, wherein air bubbling means is provided in the middle of the electrolytic water supply pipe. (Claim 3)

(4) The air bubbling means is configured so that air sucked by the air injection pump is introduced into the washing tank or the electrolytic water supply pipe through a check valve to perform bubbling. (Claim 4)

(5) The air bubbling means provided in the middle of the electrolyzed water supply pipe is connected to the negative pressure generating nozzle of the Venturi pipe in which the air introduced through the check valve is connected in series in the middle of the electrolyzed water supply pipe. To be configured to be sucked and bubbled. (Claim 5)

According to the ultrasonic cleaning method according to the first aspect described in the above (1), the electrolytic alkaline water generated on the cathode chamber side of the electrolytic cell by electrolysis can exhibit an excellent cleaning effect. Hydrogen gas dissolved in electrolytic alkaline water is released by performing bubbling in advance, so that the original ultrasonic cleaning effect can be sufficiently exhibited. In addition, it is possible to clean various processed products and parts.

According to the ultrasonic cleaning apparatus of the second aspect described in the above (2), the electrolytic alkaline water generated by the electrolysis is sent to the cleaning tank provided with the air bubbling means and the ultrasonic generating means, First, the dissolved hydrogen gas is released by bubbling the electrolytic alkaline water with the air bubbling means, and then the ultrasonic cleaning is performed by the ultrasonic generating means, so that the original ultrasonic cleaning effect is sufficiently exhibited. Thus, it is possible to clean various processed products, parts, and the like.

According to the ultrasonic cleaning apparatus of the third aspect described in the above (3), the bubbling of the electrolytic alkaline water generated in the electrolytic tank is performed in the middle of the electrolytic water supply pipe before reaching the cleaning tank. Therefore, it is not necessary to take the step of bubbling again in the cleaning tank, and immediately perform ultrasonic cleaning by ultrasonic generating means to clean various processed products and parts cleanly and effectively. Enable.

According to the ultrasonic cleaning apparatus according to the fourth aspect described in the above (4), the air sucked by the air injection pump is injected into the cleaning tank or the electrolytic water supply pipe, whereby the electrolytic alkaline water is supplied. Bubbling to water can be performed effectively, and the release of dissolved hydrogen gas can be reliably performed.

According to the ultrasonic cleaning apparatus of the fifth aspect described in the above (5), air is supplied to the electrolytic alkaline water flowing in the electrolytic water supply pipe by utilizing the suction action of the venturi tube. Since the bubbling can be performed by suction, there is no need to use expensive devices such as a pump during the construction of the air bubbling means, and the entire device can be manufactured at a relatively low cost.

As described above, the above (1) to (1)
The technical problem described above can be solved by means described in (5), and the problem of the conventional technology can be solved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an ultrasonic cleaning method using electrolytic alkaline water and an apparatus therefor according to the present invention will be described below with reference to the drawings. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating the configuration of an ultrasonic cleaning apparatus according to the present invention. In the figure, reference numeral 1 generally designates a cathode chamber 1 having an internal electrode by a diaphragm 1T.
A and an electrolytic cell partitioned into an anode chamber 1B, 2 is a water supply pipe for supplying raw water such as tap water or pure water to the electrolytic cell 1, and 3 is a tank containing an electrolyte additive such as a sodium compound or a potassium compound. The electrolyte additive liquid contained in this tank is
Water supply pipe 2 through injection pipe 5 by electrolyte injection pump 4
And is added to the raw water.

Reference numeral 6 denotes an electrolytic water supply pipe for feeding electrolytic alkaline water generated in the cathode chamber 1A of the electrolytic cell 1 by electrolysis to the cleaning tank 8, and 7 denotes an anode chamber 1B of the electrolytic cell 1 also by electrolytic decomposition. Reference numeral 20 denotes an ultrasonic generator provided in the washing tank 8 for taking out the electrolytic acid water generated in the step (1).

An air bubbling device which injects air into the cleaning tank 8 and performs bubbling is indicated by the reference symbol T as a whole.
Is constituted by an air injection pump 9 for injecting air into the cleaning tank 8 for bubbling, a check valve 10, and an air injection pipe 11, and the bubbling process by the air bubbling device T is performed in the cleaning tank 8. When a certain amount of electrolytic alkaline water is accumulated, the treatment is performed for a certain period of time.
Is started to clean the processed product, parts, and the like immersed in the cleaning tank 8.

The above-mentioned electrolytic alkaline water produced by using a sodium compound or a potassium compound as an additive has a small amount of dissolved oxygen, but a large amount of dissolved gas (particularly, hydrogen gas) as compared with a normal aqueous solution. And exist as fine bubbles in the electrolytic alkaline water. When ultrasonic cleaning is performed using this electrolytic alkaline water, bubbles in the aqueous solution weaken the shock wave generated by cavitation, and the presence of fine bubbles is a negative factor.

As a method for removing the above-mentioned air bubbles, it is conceivable to use a deodorizer using a vacuum pump.
It is not so simple and low cost. Therefore, the present invention is configured to easily remove bubbles by bubbling.

By performing the bubbling treatment, it was confirmed that fine bubbles were entrapped in the large bubbles sent from the air bubbling device T and were efficiently removed from the aqueous solution to the outside. While removing fine bubbles, the shock wave generated by cavitation is strong,
This strong shock wave makes it possible to enhance the cleaning effect.

When the sound pressure of the ultrasonic wave exceeds a certain level, cavitation occurs. That is, since a stronger shock wave is generated as the sound pressure is higher, it can be said that the ultrasonic force (shock wave force) and the sound pressure are directly proportional. Although it is difficult to directly measure ultrasonic waves, it is possible to confirm the strength of ultrasonic waves (shock waves) by measuring sound pressure. Therefore, the sound pressure can be measured before and after the bubbling process, and the change in the ultrasonic force can be confirmed by observing the change in the sound pressure.

When the sound pressure was measured by a method unique to the present applicant, the sound pressure when the bubbling process was not performed was 20.
mV, and the sound pressure when the bubbling process is performed is 25
mV, and a 5 mV increase in sound pressure before and after the bubbling process was observed. In other words, by performing the bubbling treatment, it was confirmed that fine bubbles of hydrogen that were present in the supersaturated state in the electrolytic alkaline water were removed, and that cavitation was easily caused, so that it was more useful. It was found that a shock wave was generated and an excellent cleaning effect could be exhibited.

The detergency is determined according to JIS K3362 (19).
98) using the same thing as the lnut shape described in
Attach model stains made from tallow, chloroform and oil red to glass pieces, the amount of stains on model stain glass pieces before washing α and stains on model stain glass pieces after washing Was used to determine the detergency X of each solution for judging detergency from the amount β of the aqueous solution. As a result, the cleaning rate without bubbling was 13%, and the cleaning rate with bubbling was 48%. This result indicates that a strong shock wave was generated because fine bubbles in the electrolytic alkaline water were removed by the bubbling treatment, and this shock wave enhanced the cleaning effect.

FIG. 2 is a block diagram illustrating the structure of an ultrasonic cleaning apparatus according to the present invention described in the third and fourth aspects. In the present invention, an air bubbling apparatus generally indicated by the symbol T is shown. Is provided in the middle of the electrolytic water supply pipe 6, and the electrolytic alkaline water generated by the electrolysis is subjected to bubbling treatment before reaching the cleaning tank 8 to remove fine bubbles of the electrolytic alkaline water. It is a mechanism that can demonstrate excellent cleaning effect.

FIG. 3 is a block diagram for explaining the structure of the ultrasonic cleaning apparatus according to the fifth aspect of the present invention. In the present invention, an air bubbling apparatus generally indicated by the symbol T is: It comprises an air injection pipe 11 having a check valve 10 and a bench lily nozzle 12 provided in the middle of the electrolytic water supply pipe 6.

As shown in the enlarged view of FIG. 4, the bench lily nozzle 12 has bench lily tubes 12A and 12B having a relative shape connected in the middle of the electrolytic water supply pipe 6. Negative pressure generating nozzle part 1 between 12A and 12B
The air bubbling device T having the above-described configuration is constructed by connecting the distal end portion 11A of the air inflow pipe 11 to the 2 ′.
The air can be drawn through the air injection pipe 11 and its tip 11A by the negative pressure generated in the negative pressure generating nozzle 12 'without using the air injection pump 9 as shown in FIG. By subjecting the electrolytic alkaline water passing through the nozzle 12 to bubbling treatment, the above-described excellent cleaning effect can be achieved.

In describing the configuration of the present invention shown in FIGS. 2 and 3, the same members as those described in FIG. 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. To

[0032]

As described above, according to the method and the apparatus for ultrasonic cleaning using electrolytic alkaline water according to the present invention, the cleaning operation by electrolytic alkaline water and the cleaning operation by ultrasonic waves can be sufficiently exhibited. Therefore, it is possible to exert a more complete cleaning effect, and it is extremely suitable for cleaning various processed products and parts.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of the present invention according to claims 1 and 2;

FIG. 2 is a block diagram illustrating a configuration of the present invention according to claims 1 and 3;

FIG. 3 is a block diagram illustrating a configuration of the present invention according to claim 4;

FIG. 4 is a configuration diagram illustrating details of a bench lily nozzle shown in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electrolysis tank 1T Diaphragm 1A Cathode chamber 1B Anode chamber 3 Electrolyte additive liquid tank 6 Electrolyzed water supply pipe 8 Cleaning tank T Air bubbling device 9 Air injection pump 10 Check valve 12 Bench lily nozzle

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) C02F 1/46 C02F 1/46 A F term (reference) 3B116 AA46 BB02 BB21 BB72 BB83 BB88 BB89 3B201 AA46 BB02 BB21 BB72 BB83 BB88 BB89 BB91 BB98 4D037 AA01 AB18 BA23 BB05 CA04 4D061 DA03 DA10 DB07 DB08 EA02 EB04 EB12 EB19 ED12 ED13 FA03

Claims (5)

[Claims] 1. An ultrasonic cleaning method for cleaning various processed products and parts using electrolytic alkaline water, wherein raw water obtained by adding a sodium compound or a potassium compound to tap water is separated by a diaphragm. After electrolysis in an electrolytic cell partitioned into an anode compartment and a cathode compartment, alkaline water is generated on the cathode compartment side, and after bubbling air against the generated electrolytic alkaline water, ultrasonic cleaning is performed. An ultrasonic cleaning method using electrolytic alkaline water, which is performed or provided as ultrasonic cleaning water. 2. An electrolytic cell partitioned into an anode compartment and a cathode compartment each having an electrode by a diaphragm, and supplied with tap water or pure water to which an electrolyte has been added, and electrolyzed to produce an electrolyte in the cathode compartment. An ultrasonic cleaning apparatus using electrolytic alkaline water configured to ultrasonically clean various processed products, parts, and the like by sending the obtained electrolytic alkaline water to a cleaning tank provided with ultrasonic generating means. An air bubbling means is provided in the cleaning tank, and after bubbling is performed on the electrolytic alkaline water by the air bubbling means, the ultrasonic generation means is operated to perform ultrasonic cleaning. Ultrasonic cleaning device using electrolytic alkaline water. 3. Electrolyte is supplied by supplying tap water or pure water to which an electrolyte has been added to an electrolytic cell partitioned into an anode chamber and a cathode chamber each having an electrode by a diaphragm. The electrolyzed alkaline water passed through the electrolyzed water supply pipe to a cleaning tank equipped with an ultrasonic generator is used to ultrasonically clean various processed products, parts, and the like. An ultrasonic cleaning apparatus using electrolytic alkaline water, wherein an air bubbling means is provided in the middle of the electrolytic water supply pipe. 4. The air bubbling means is configured to introduce air sucked by an air injection pump into the washing tank or the electrolyzed water supply pipe via a check valve for bubbling. Item 7. An ultrasonic cleaning device using the electrolytic alkaline water according to item 2 or 3. 5. An air bubbling means provided in the middle of the electrolyzed water supply pipe sucks air introduced through a check valve into a negative pressure generating nozzle portion of a Venturi pipe connected in series in the middle of the electrolyzed water supply pipe. The ultrasonic cleaning apparatus using electrolytic alkaline water according to claim 3, wherein the ultrasonic cleaning apparatus is configured to perform bubbling.