JPH05269446A - Pressure-reduced/pressurized foaming and cleaning apparatus - Google Patents

Abstract

PURPOSE:To make it possible to clean pollution-freely a item to be cleaned by means of an apparatus wherein the item to be cleaned is immersed in a cleaning water and the cleaning water is controlled repeatedly under a reduced pressure condition and a pressurized condition and the cleaning water is sucked into interstices and air gaps with an order of angstrom and gas in the interstices and air gaps is extracted into air bubbles. CONSTITUTION:The title apparatus consists of a cleaning water storing device 2 storing cleaning water, a cleaning water feeding device 6 feeding cleaning water into the cleaning water storing device, a cleaning water discharging device 7 discharging the cleaning water in the cleaning water storing device, a pressure reducing-pressurizing control device 13 controlling repeatedly the lower part of the cleaning water in the cleaning water storing device under a reduced pressure condition and pressurized condition and a air bubble blowing device 18 blowing air bubbles to a item to be cleaned MA placed in the cleaning water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for cleaning an object to be cleaned without pollution, and more particularly, to placing the object to be cleaned in the environment of the cleaning water and the lower part of the environment of the cleaning water. By repeatedly controlling the place to be in a depressurized state and a pressurized state, the cleaning water is sucked into the angstrom-order slits and voids that are dispersed in the object to be cleaned, and the gas in the slits and voids is bubbled. The present invention relates to a depressurization-pressurization foaming cleaning device adapted to clean an object to be cleaned by extracting into the above.

[0002]

2. Description of the Related Art As is well known, when cleaning various industrial products, equipment, or various equipment components,
Conventionally, as the cleaning agent, chlorofluorocarbon having excellent properties such as extremely high chemical stability and nonflammability has been used.

[0003]

However, in this CFC, various pollution problems, especially the global scale problem of depletion of the ozone layer has been raised, and the tendency to completely prohibit its use has become prominent and the legal system has been It has been converted to. Under these circumstances, in the industrial field where CFCs were used as a cleaning agent, it has become necessary to develop another cleaning agent and a cleaning method in place of CFCs.
Therefore, in this type of industrial field, the idea of using water as another cleaning agent instead of CFCs has been drawing attention. However, when the above-mentioned various industrial products to which oil, metal corrosives, etc. are strongly adhered are the objects to be cleaned, the desired cleaning treatment cannot be achieved at all simply by using water. Therefore, when water is used as a cleaning agent, there is a strong demand for a specific means that can meet the above-mentioned requirements and a specific device thereof.

Therefore, the present invention has been made in order to meet the above-mentioned demands in a cleaning device which uses water as a cleaning agent, and is a cleaning device for cleaning an object to be cleaned without pollution. In particular, the object to be cleaned is placed in the environment of the cleaning water, the lower part of the environment of the cleaning water is repeatedly controlled to the depressurized state and the pressurized state, and the cleaning water is sucked into the slits or voids of the object to be cleaned, It is an object of the present invention to provide a depressurization-pressurization foaming cleaning device for cleaning the object to be cleaned by extracting the gas in the narrow gap or the void into bubbles.

[0005]

In order to achieve the above object, the present invention specifically puts an object to be cleaned under the environment of the cleaning water, and depressurizes and lowers the lower part of the environment of the cleaning water. Repeatedly controlled to the state, angstrom-order slits existing in the object to be cleaned, suctioning the cleaning water into the voids, and extracting the gas in the slits and voids into bubbles,
The object to be cleaned is cleaned. In the present invention, the depressurization-pressurization foaming cleaning apparatus puts the object to be cleaned in the environment of the cleaning water, and airtightly combines the lower part of the environment of the cleaning water so that it can be repeatedly controlled to the depressurized state and the pressurized state. Cleaning water storage means for storing the cleaning water, cleaning water supply means for supplying the cleaning water to the cleaning water storage means, and cleaning water discharge means for discharging the cleaning water of the cleaning water storage means A depressurization-pressurization control means for repeatedly controlling the lower part of the wash water environment in the wash water storage means to a depressurized state and a pressurized state; and in the wash water storage means, under the wash water environment. It is provided with a bubble spraying means for spraying bubbles to the object to be cleaned.

Furthermore, in a specific embodiment of the present invention, the cleaning water storage means is a decompression-pressurization foaming chamber, which is a cleaning tank having a cleaning chamber capable of accommodating an object to be cleaned under the environment of the cleaning water. In a further configuration, the cleaning water storage means constitutes a decompression-pressurization foaming cleaning device which is a tubular object to be cleaned itself.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The depressurization-pressurization foam cleaning apparatus according to the present invention will be described below in detail with reference to specific embodiments shown in the drawings. FIG. 1 is a schematic side sectional view showing a concrete embodiment of a depressurization-pressurization foam cleaning apparatus according to the present invention, and FIG. 2 shows a tubular object to be cleaned. FIG. 3 is a schematic side sectional view showing an example in which the cleaning object itself constitutes cleaning water storage means. FIG. 3 is a schematic side sectional view showing another specific example of the depressurization-pressurization foaming cleaning apparatus in the case where the object to be cleaned is a large object.

The depressurizing-pressurizing foam cleaning apparatus according to the present invention will be sequentially described in detail below with reference to the examples shown in FIGS. 1, 2 and 3. First, in the depressurization-pressurization foam cleaning apparatus 1 according to the present invention, basically, the solid cleaning object M _A or the tubular cleaning object M _B is placed in the cleaning water environment to store the cleaning water. The cleaning water storage means 2 is provided. In the embodiment shown in FIG. 1, the cleaning water storage means 2 includes a cleaning tank 3 that receives cleaning water and can store a solid object to be cleaned in the cleaning water. The cleaning tank 3
Receives the washing water, stores the solid matter M _A in the washing water, and repeatedly combines the inside with the depressurized state and the pressurized state by combining with the airtightness forming means 4 such as an airtight lid. A controllable depressurization-pressurization chamber 5 is configured.

The cleaning water storage means 2 is provided with cleaning water supply means 6 for supplying cleaning water and cleaning water discharge means 7 for discharging cleaning water. The cleaning water supply means 5 is provided with a cleaning water supply tank 8 for storing pure water, distilled water, ion-exchanged water, etc. in a state of being kept at room temperature to about 80 ° C. by a known constant temperature means, and a valve V ₁ . The cleaning water supply passage 9 is provided, and is connected to the cleaning water supply port 10 in the cleaning tank 3 through the cleaning water supply passage 9.
The cleaning water discharge means 7 is composed of a cleaning water discharge path 11 provided with a valve V _2, and the cleaning water discharge path 11 is provided.
It is connected to the cleaning water discharge port 12 in the cleaning tank 3 via.

Further, with respect to the cleaning water storage means 2, a decompression in the cleaning water storage means-a decompression for repeatedly controlling the inside of the pressurizing chamber 5 to a depressurized state and a pressurized state-
The pressure control means 13 is combined. For example, according to the embodiment shown in FIG. 1, the decompression / pressurization control means 13 includes a pressurization pump P ₁ and a connection valve V ₃ to the pressurization pump.
Decompression preparation support tank 14 equipped with a pressure reduction preparation support tank 14, decompression pump P ₂ and connection valve V ₄ to the decompression pump
5 and a first connecting path 16 having a valve V ₅ and a second connecting path 17 having a valve V ₆ , and the pressurization preparation support tank 14 connects the first connecting path 16 It is connected to the cleaning tank 3 via the
Is connected to the cleaning tank 3 via the second connection path 17. In this example, the pressure reduction-pressurization control means 1
3 is a connection valve V ₃ and a valve V to the pressurizing pump
₅ is opened and the valve V ₆ is closed, the decompression-pressurization chamber 5 in the cleaning tank 3 is pressure-controlled, the connection valve V ₃ and valve V ₅ to the pressure pump are closed, and the decompression pump is With the valves V ₄ and V ₆ connected thereto, the depressurization-pressurization chamber 5 in the cleaning tank 3 is depressurized.

On the other hand, the depressurization-pressurization foam cleaning apparatus 1 according to the present invention is provided with a bubble spraying means 18 for spraying bubbles to the object to be cleaned in the depressurization-pressurization chamber 5 in the cleaning water storage means 2. ing. The bubble blowing means 18
Is connected to the atmosphere or the cleaning gas source 19 at one end side and includes a blowing gas suction passage 21 having a porous foam body 20 at the other end side via a valve V ₇ .

Further, in the depressurization-pressurization foaming cleaning apparatus 1 according to the present invention, the cleaning water storage means 2 is combined with an ultrasonic cleaning system utilizing ultrasonic waves, and the ultrasonic cleaning system and the depressurization-pressurization foaming are combined. By cleaning, the object to be cleaned M
Allows cleaning and removal of deposits on _{A that} are extremely difficult to remove. Further, the depressurization-pressurization foam cleaning apparatus 1 according to the present invention
Then, in the mode as shown in FIG. 1, the far-infrared heater 2 is provided in the decompression / pressurization chamber 5 in the cleaning water storage means 2.
It is also possible to combine the two and thereby promote the drying.

Furthermore, in the depressurization-pressurization foam cleaning apparatus 1 according to the present invention, when desalting cleaning is performed,
The resistance value of the cleaning water in the cleaning tank 3 can be measured by disposing, for example, an ohmmeter for measuring the salt concentration of the water in the cleaning water in the cleaning tank 3 in the cleaning water storage means 2. To configure. In the case of the above configuration, the hot water is exchanged several times until the resistance value of the wash water in the wash tank 3 becomes large, the hot water is changed to distilled water, and the change in the resistance value of the water is compared to determine the water resistance. When the maximum value is reached, the water exchange may be stopped and the reduced pressure foam cleaning treatment may be performed.

The depressurization-pressurization foam cleaning apparatus 1 of the present invention having the above-mentioned structure is operated as follows. First, the valve V
₆ is closed, a decompression for suction of cleaning water is prepared in the decompression preparation support tank 15, and sterilized hot water is prepared in the cleaning water supply tank 8. Open valve V ₁ , valve V ₄ and valve V ₆ , and wash tank 3
The liquid in the wash water supply tank 8 is sucked into the inside to the level of WL ₁ . Then, the valves V ₁ and V ₆ are closed, the decompression of the decompression preparation support tank 15 is reduced to the foaming pressure, the valves V ₆ and V ₇ are opened, and foaming is caused from the porous foam 20 in the bubble blowing means 18. Let Then, the valve V ₇ is closed and the valves V ₄ and V ₆ are opened to continue decompression foaming, and the far-infrared heater 22 is used to clean the object M
Heat _A and dry under vacuum. At the stage when the liquid level in the cleaning tank 3 reaches WL ₂ , the valve V ₆ of the decompression preparation support tank 15 is closed, and the connection valve V ₄ to the decompression pump P ₂ is closed to stop the decompression operation and pressurize. Connection valve V to the pump
₃ and the valve V ₅ are opened, the pressure of the pressurization preparation support tank 14 is set to the waste liquid pushing pressure by the pressure pump P ₁ , and the waste liquid pushing process is performed.

Depressurization-pressurization foam cleaning apparatus 1 according to the present invention
When the solid object M _A to be cleaned is a relatively large structure or the like, instead of the airtightness forming means 4 such as the airtight lid in the cleaning water storage means 2 in the embodiment shown in FIG. As shown in FIG. 3, the airtightness forming means 4A made of a flexible plastic sheet can be applied. In this case, the airtightness forming means 4A made of the plastic sheet is
In the cleaning tank 3 having an open upper part, the cleaning object M _A housed so as to project from the open side to the upper side is covered, and the edge of the sheet is immersed in the cleaning water. With such a configuration, by performing depressurization operation via the depressurization-pressurization control means 13, the lower environmental part of the washing water in the airtightness forming means 4A made of a plastic sheet is shifted to a depressurized state, and the object to be washed is The cleaning water can be sucked into the pore voids to extract the gas in the pore voids in the form of bubbles to clean the object to be cleaned. The structure of this specific example is extremely advantageous in that the structure is simple and the operation is easy.

Next, another specific embodiment of the depressurization-pressurization foam cleaning apparatus 1 according to the present invention will be described in detail with reference to FIG. 2A. In the embodiment shown in FIG. 2A, the tubular object to be cleaned M _B is subjected to decompression-pressure foam cleaning, and the tubular object to be cleaned M _B itself constitutes a part of the cleaning water storage means 2. It consists of things. That is, in this embodiment, the cleaning water storage means 2 has a tubular article M to be cleaned.
_It includes a cleaning tank 3 constituted by _B itself, and, for example, airtightness forming means 4B, 4B such as airtight stoppers are combined with both open ends, and the inside is repeatedly in a depressurized state and a pressurized state. A controllable depressurization-pressurization chamber 5 is configured.

Washing water supply means 6 for supplying washing water to the washing water storage means 2 is provided. The cleaning water supply means 6 is provided with a cleaning water supply tank 8 for storing pure water, distilled water, ion-exchanged water and the like kept at room temperature to about 80 ° C. by a well-known constant temperature means, and a valve V ₁ . The cleaning water supply passage 9 is provided, and is connected to the cleaning water supply port 10 in the cleaning tank 3 through the cleaning water supply passage 9. The cleaning water supply port 10 is composed of a connection hole provided in the airtightness forming means 4B.

Further, with respect to the cleaning water storage means 2, a decompression in the cleaning water storage means-a decompression for repeatedly controlling the inside of the pressurizing chamber 5 to a depressurized state and a pressurized state-
The pressure control means 13 is combined. For example, according to the embodiment shown in FIG. 1, the decompression / pressurization control means 13 includes a pressurization pump P ₁ and a connection valve V ₃ to the pressurization pump.
Decompression preparation support tank 14 equipped with a pressure reduction preparation support tank 14, decompression pump P ₂ and connection valve V ₄ to the decompression pump
5 and a first connecting path 16 having a valve V ₅ and a second connecting path 17 having a valve V ₆ , and the pressurization preparation support tank 14 connects the first connecting path 16 It is connected to the cleaning tank 3 via the
Is connected to the cleaning tank 3 via the second connection path 17. In this example, the pressure reduction-pressurization control means 1
3 is a connection valve V ₃ and a valve V to the pressurizing pump
₅ is opened and the valve V ₆ is closed, the decompression-pressurization chamber 5 in the cleaning tank 3 is pressurized, the connection valve V ₅ to the pressurization pump is closed, and the connection valve to the decompression pump is closed. The depressurization-pressurization chamber 5 in the cleaning tank 3 is depressurized with V ₄ and the valve V ₆ open.

On the other hand, the depressurized-pressurized foam cleaning apparatus 1 according to the present invention is provided with a bubble spraying means 18 for spraying bubbles to the inner wall of the tubular object M _B constituting the cleaning water storage means 2. There is. The bubble blowing means 18 is
One end is connected to the atmosphere or the cleaning gas source 19, and the porous foam 20 is connected to the other end through the valve V _7.
And a blowing gas suction passage 21 having

Depressurized-pressurized foam cleaning apparatus 1 shown in FIG. 2B.
Is a structural example different from that of the embodiment shown in FIG. 2A. In the embodiment shown in FIG. 2B, the tubular object M _B is subjected to decompression-pressure foam cleaning, and the tubular object M _B itself constitutes a part of the cleaning water storage means 2. It consists of things. That is, in this embodiment, the cleaning water storage means 2 includes the cleaning tank 3 constituted by the tubular object to be cleaned M _B itself, such as an airtight stopper to both open ends. The airtightness forming means 4B, 4B are combined to form a depressurization-pressurization chamber 5 capable of repeatedly controlling the inside into a depressurized state and a pressurized state. In this example, wash water supply means 6 for supplying wash water to the wash water storage means 2
Is composed of, for example, a wash water supply tank 8 having an open upper part. In this case, a valve V ₁ is provided for the airtightness forming means 4B in the cleaning water storage means 2, and the airtightness forming means 4B side in the cleaning water storage means 2 is in the cleaning water supply tank 8. By submerging it in the wash water, it functions similarly to that of the embodiment shown in FIG. 2A. In the embodiment shown in FIG. 2B, the parts omitted in the drawing are the same as those in the embodiment shown in FIG. 2A.

[0021]

The depressurization-pressurization foaming and cleaning apparatus of the present invention having the above-mentioned structure is constituted by a simplified apparatus, and is extremely effective in that it can be handled by an extremely simple operation. It can be said that it does. That is, the depressurization-pressurization foaming cleaning device according to the present invention is suitable for a cleaning device for cleaning an object to be cleaned without pollution, placing the object to be cleaned in the environment of the cleaning water, and By repeatedly controlling the place to be in a depressurized state and a pressurized state, the cleaning water is sucked into the angstrom-order slits and voids that are dispersed in the object to be cleaned, and the gas in the slits and voids is bubbled. It is used for cleaning the object to be cleaned, and it works effectively in terms of improving workability, and it also works extremely effectively in terms of eliminating problems such as pollution and improving safety. It can be said that it does.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view showing a specific embodiment of the entire structure of a depressurization-pressurization foam cleaning apparatus according to the present invention.

FIG. 2A is a schematic side sectional view showing still another specific embodiment of the depressurization-pressurization foam cleaning apparatus according to the present invention, and FIG. 2B shows the embodiment shown in FIG. 2A. It is a schematic sectional side view which shows the example of a change.

FIG. 3 shows another specific example of the depressurization-pressurization foam cleaning apparatus according to the present invention, and is a schematic side sectional view of the apparatus which is particularly effective for cleaning a large object to be cleaned. It is a figure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Decompression-pressurization foam cleaning apparatus 2 Cleaning water storage means 3 Cleaning tank 4 Airtight formation means 5 Decompression-pressurization chamber 6 Cleaning water supply means 7 Cleaning water discharge means 8 Cleaning water supply tank 9 Cleaning water supply path 10 Cleaning water supply Port 11 Wash water discharge path 12 Wash water discharge port 13 Decompression-pressurization control means 14 Pressurization preparation support tank 15 Decompression preparation support tank 16 First connection path 17 Second connection path 18 Bubble blowing means 19 Air or cleaning gas source 20 porous foam 21 blowing gas suction passage 22 far infrared heaters M _a solid shaped article to be cleaned M _B to be washed of the tubular P _1, P ₂ pumps V ₁ ~V ₇ valve

Claims (3)

[Claims] 1. An object to be cleaned is placed in an environment of cleaning water, and a lower part of the environment of the cleaning water is repeatedly controlled to be in a depressurized state and a pressurized state, and the angstrom-order slits dispersedly present in the object to be washed, Suctioning the cleaning water into the void, extracting the gas in the slit, the void in the form of bubbles, and cleaning the object to be cleaned, the object to be cleaned is placed under the environment of the cleaning water, Cleaning water storage means for storing the cleaning water by airtightly combining the lower part of the environment of the cleaning water in a depressurized state and a pressurized state, and for supplying the cleaning water to the cleaning water storage means Wash water supply means, wash water discharge means for discharging wash water of the wash water storage means, and for repeatedly controlling the lower part of the environment of the wash water in the wash water storage means to a depressurized state and a pressurized state. Depressurization-pressurization control means of In the cleaning water storage means, there is provided a bubble spraying means for spraying bubbles to an object to be cleaned placed under the environment of the cleaning water, which is a decompression-pressurization foam cleaning device. .. 2. The reduced pressure according to claim 1, wherein the cleaning water storage means is a cleaning tank having a cleaning chamber inside which can store an object to be cleaned under the environment of cleaning water.
Pressure foam cleaning equipment. 3. The depressurization-pressurization foam cleaning device according to claim 1, wherein the cleaning water storage means is a tubular object to be cleaned itself.