JP2018015747A - Microbubble washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fine bubble cleaning device having an enhanced cleaning effect by surely crushing fine bubbles such as microbubbles and nanobubbles adhering to the surface of an object to be cleaned. SOLUTION: A cleaning tank 10 for storing a cleaning liquid and immersing an object to be cleaned, an ultrasonic vibrator 20 arranged in the cleaning tank 10 for supplying ultrasonic vibration to the cleaning liquid, and fine bubbles in the cleaning tank 10. According to the fine bubble cleaning device 1 provided with the fine bubble generating nozzles 40a, 40b, 40c for supplying the cleaning liquid containing the above. According to the fine bubble cleaning device 1, the ultrasonic vibrator 20 reliably crushes the fine bubbles adhering to the surface of the object to be cleaned, so that the impact force generated at the time of the crushing causes the ultrasonic vibrator 20 to adhere to the surface of the object to be cleaned. It is possible to separate dirt such as foreign matter. [Selection diagram] Fig. 1

Description

The present invention relates to a fine bubble cleaning device that cleans an object to be cleaned by spraying a cleaning liquid containing microbubbles, nanobubbles, or the like toward the object to be cleaned.

Conventionally, a cleaning tank for storing cleaning liquid, a bubble ejecting means attached to the cleaning tank for injecting bubbles into the cleaning tank, and an elevating mechanism for immersing the object to be cleaned attached in the cleaning liquid in the cleaning tank. A cleaning device provided is known (see, for example, Patent Document 1). This cleaning apparatus is configured so that the object to be cleaned is immersed in the cleaning liquid by the elevating mechanism, and the foreign matter attached to the object to be cleaned is separated from the object to be cleaned by the bubbles ejected from the bubble ejecting means. The levitated object floats toward the liquid surface of the cleaning liquid together with the bubbles.

JP-A-6-177991

The cleaning principle using microbubbles such as microbubbles or nanobubbles uses the phenomenon of crushing when the microbubbles collide with the object to be cleaned, and uses the impact force generated during the collapse. Thus, the foreign matter adhering to the surface of the object to be cleaned can be separated from the object to be cleaned. However, the conventional cleaning apparatus has a problem that the object to be cleaned cannot be cleaned because the microbubbles may only adhere to the surface of the object to be cleaned and the crushing may not occur.

The object of the present invention is to solve the above-mentioned problems, and the object is to reliably crush microbubbles, nanobubbles and other fine bubbles attached to the surface of the object to be cleaned. It is an object of the present invention to provide a fine bubble cleaning apparatus having an improved cleaning effect.

The cleaning liquid is stored, and a cleaning tank in which an object to be cleaned is immersed, an ultrasonic vibrator that is disposed in the cleaning tank and supplies ultrasonic vibration to the cleaning liquid, and a cleaning liquid containing fine bubbles is supplied to the cleaning tank. And a fine bubble generating nozzle.

  Moreover, it is preferable that the ultrasonic vibrator intermittently supplies ultrasonic vibration.

According to the fine bubble cleaning apparatus of the present invention, the ultrasonic vibrator reliably crushes the fine bubbles adhering to the surface of the object to be cleaned, so that it adheres to the surface of the object to be cleaned by the impact force generated during the collapse. Dirt such as foreign matter can be separated.

In addition, since the vibration by the ultrasonic vibrator is intermittently applied, the fine bubbles are uniformly attached to the surface of the object to be cleaned, and then the ultrasonic bubbles are applied to crush the fine bubbles. Can be increased.

It is a whole block diagram of the fine bubble cleaning apparatus of this invention. It is a whole block diagram which concerns on other embodiment of the microbubble cleaning apparatus of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view schematically showing a fine bubble cleaning apparatus 1 of the present invention. The fine bubble cleaning apparatus 1 includes a cleaning tank 10,
Ultrasonic vibrator 20, overflow tank 30, fine bubble generating nozzles 40a, 40b, 40c
And a cleaning liquid circulation system 50.

The cleaning tank 10 includes an overflow frame 11 for storing the cleaning liquid therein and into which the overflowed cleaning liquid flows. In addition, a tub 12 is disposed inside the cleaning tank 10 and is configured to store a screw S as an example of an object to be cleaned.

An overflow tank 30 is connected to a drain port (not shown) of the overflow frame 11 via a pipe 31. The overflow tank 30 is configured to temporarily store and purify the cleaning liquid overflowed from the overflow frame 11 of the cleaning tank 10.

A cleaning liquid circulation system 50 is connected to a drain port (not shown) of the overflow tank 30 through a pipe 51.
Is connected. A dissolution tank 52 is connected to the pipe 51, and a booster pump 53 provided in the middle of the pipe 51 is configured to pump the cleaning liquid from the overflow tank 30 and pump it to the dissolution tank 52.

Further, the pipe 51 is provided with a gas inlet 54 so that a gas such as oxygen or ozone can be sucked. For this reason, the dissolution tank 52 is supplied with a mixture of gas and cleaning liquid, and the gas is pressurized and dissolved in the cleaning liquid by the pressurizing force of the booster pump 53.

A pipe 55 extending from the discharge port (not shown) of the dissolution tank 52 to the cleaning tank is branched into three in the middle, and fine bubble generating nozzles 40a, 40b, and 40c are connected to the tip thereof.
The fine bubble generating nozzles 40a, 40b, and 40c are configured to rotate the gas-liquid two-phase fluid at high speed and generate microbubbles by shearing force. The fine bubble generating nozzles 40a, 40b, and 40c are attached to the inside of the cleaning tank 10 below the upstream side surface 10a, and spray a cleaning liquid containing micro bubbles such as micro or nano bubbles toward the downstream side surface 10b. Is configured to do.

The cleaning liquid supplied from the upstream side surface 10a of the cleaning tank 10 to the inside of the cleaning tank 10 flows toward the downstream side surface 10b along the bottom surface 10c of the cleaning tank 10 as shown by an arrow A in FIG. Further, as shown by the arrow B, the cleaning liquid that hits the downstream side surface of the cleaning tank flows in the reverse direction. In this way, the fine bubble generating nozzle is arranged so that the cleaning liquid circulates around the object to be cleaned.

The ultrasonic vibrator 20 is disposed below the bottom surface 10c of the cleaning tank 10, and is configured to apply ultrasonic vibration to the object to be cleaned through the cleaning liquid.

In the fine bubble cleaning apparatus 1 of the present invention, as described above, since the cleaning liquid containing microbubbles is circulated around the object to be cleaned, the microbubbles are uniformly attached to the entire surface of the object to be cleaned. Then, by applying ultrasonic vibration to the object to be cleaned, the microbubbles are forcibly crushed. Since a shock wave is generated around the object to be cleaned by crushing, the surface of the object to be cleaned can be cleaned. Further, ultrasonic vibration is applied intermittently rather than continuously. This is because in the state where the microbubbles are not attached around the object to be cleaned, a shock wave due to crushing does not occur, so that a sufficient cleaning effect cannot be obtained when ultrasonic vibration is applied. Therefore, it is preferable that the ultrasonic vibration is applied in a state where the microbubbles are sufficiently attached around the object to be cleaned.

A fine bubble cleaning apparatus 100 shown in FIG. 2 is another embodiment of the present invention. In the fine bubble cleaning apparatus 1, the overflow tank 30 is removed. Even in such a form, a certain degree of cleaning effect can be expected.

DESCRIPTION OF SYMBOLS 1 Fine bubble cleaning apparatus 10 Cleaning tank 20 Ultrasonic vibrator 30 Overflow tank 40a, 40b, 40c Fine bubble generation nozzle 50 Cleaning liquid circulation system

Claims (2)

A cleaning tank for storing the cleaning liquid and immersing the object to be cleaned,
An ultrasonic vibrator disposed in the cleaning tank and supplying ultrasonic vibration to the cleaning liquid;
A fine bubble generating nozzle for supplying a cleaning liquid containing fine bubbles to the cleaning tank;
A fine bubble cleaning apparatus comprising: The fine bubble cleaning apparatus according to claim 1, wherein the ultrasonic vibrator intermittently supplies ultrasonic vibration.

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