JPH0985007A - Distillation and regeneration apparatus for polluted cleaning liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently condense and recover a vapor generated by heating a polluted cleaning liquid by providing a vacuum condensing tank to supply a cooling liquid to the inside based on the suction function of a suction part of an ejector mechanism, and an evaporating tank to heat and evaporate the polluted cleaning liquid in the inside by connecting a jetting aperture with the vacuum condensing tank. SOLUTION: When an ejector mechanism 5 is operated by a circulation pump 7, a cooling liquid 4 in a cooling tank 1 is circulated through a circulation pipe 6, so that a suction function is caused in a suction part 8. Due to the suction function, the inside of a vacuum condensing tank 10 communicated through a leading pipe 11 is made to be pressure-decreased state. Due to the decrease of the pressure, vapor generated by heating and evaporating a polluted cleaning liquid 3 is sucked and led from an evaporating tank 15 through a connection pipe 16 and, at the same time, the cooling liquid 4 is supplied to the vacuum condensing tank 10 through a jetting aperture 12 from the cooling tank 1 connected through a communication pipe 14. In the vacuum condensing tank 10, the cooling liquid 4 and the vapor are brought into contact mutually, so that the vapor can be condensed efficiently and smoothly and the polluted cleaning liquid can be distilled and regenerated efficiently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to mechanical parts, electronic parts,
The present invention relates to a device for distilling and regenerating a polluted cleaning liquid, which is used for cleaning other objects to be cleaned and reclaims a contaminated cleaning liquid.

[0002]

2. Description of the Related Art Conventionally, electronic parts, mechanical parts, and other objects to be cleaned are generally cleaned and cleaned by methods such as steam cleaning, shower cleaning, and immersion cleaning. Then, the cleaning liquid used for these cleaning removes the dirt attached to the object to be cleaned and becomes itself polluted.

In the method of distilling the polluted cleaning liquid,
Conventionally, a distillation regeneration method in which this is heated, vaporized and distilled is generally used. In this distillation regeneration method, the polluted cleaning liquid is heated to generate steam, and the steam is condensed to remove the contaminants and used as a regeneration liquid.

For the condensation of the vapor, a cooling pipe is generally wound around the upper part of a heating tank for regeneration of distillation or a separately provided reduced pressure condensing tank. Then, steam generated by heating the polluted cleaning liquid is brought into contact with this cooling pipe to condense and collect it.

[0005]

However, the method of condensing steam by contacting the cooling pipe with the cooling pipe has a small surface area of the cooling pipe, so that it is extremely inefficient and may perform a quick and effective condensing action. It cannot be done.

[0006] The present invention is intended to solve the above-mentioned problems, in which the polluted cleaning liquid is heated for distillation, the generated vapor is efficiently condensed, and the vapor is efficiently recovered. It is intended to provide a device.

[0007]

In order to solve the above problems, the present invention provides a cooling tank equipped with a cooling mechanism and filled with condensed cooling liquid, and an ejector mechanism connected to the cooling tank and circulating the cooling liquid. And a reduced pressure condensing tank which is connected to the suction section of the ejector mechanism and communicates with the cooling tank to supply the cooling liquid to the inside in accordance with the suction action of the suction section, and an injection port is connected to the reduced pressure condensation tank and a heating section. And an evaporation tank that heats and evaporates the dirty cleaning liquid inside.

A second aspect of the invention is a cooling tank which is provided with a cooling mechanism and which is filled with condensed cooling liquid and which is connected to a vacuum pump so that the inside pressure can be reduced, and a suction action of a suction pump which communicates with the cooling tank. Along with this, a reduced pressure condensing tank for supplying the cooling liquid to the inside thereof, and an evaporation tank for connecting an injection port to the reduced pressure condensing tank and having a heating portion for heating and evaporating the contaminated cleaning liquid inside are formed.

Further, in the evaporating tank of the waste liquid, a cooling coil is wound around the inner circumference of the upper end to allow the cooling water to flow, and when the cooling water flows, the steam is retained inside to allow the steam cleaning. May be.

Further, the cooling liquid may be supplied to the reduced pressure condensing tank by spraying.

The cooling liquid may be supplied to the reduced pressure condensing tank in the form of a shower.

The cooling liquid may be supplied to the depressurizing condensing tank by forming a liquid curtain.

[0013]

Since the present invention is configured as described above, when distilling and regenerating the polluted cleaning liquid, it is necessary to fill the evaporating tank with the polluted cleaning liquid and heat the polluted cleaning liquid by the heating unit to generate steam. generate. Also, the ejector mechanism connected to the cooling tank filled with the cooling liquid is operated.
This ejector mechanism is configured to circulate the cooling and cleaning liquid sucked from the cooling tank by the pump through the suction unit to the cooling tank.

An inlet pipe connected to this suction section at a right angle is connected to a decompression condensing tank, and the inside of the decompression condensing tank can be decompressed by suction of the suction section. Further, since the cooling tank and the decompression condensing tank are communicated with each other through the communication pipe, if the ejector mechanism is activated to depressurize the decompression condensing tank, the cooling liquid in the cooling tank is decompressed through the communication pipe. And is introduced into the decompression tank. By this introduction, the cooling liquid in the cooling tank is discharged into the depressurizing condensing tank by a method such as spraying, showering, or liquid curtain in the depressurizing condensing tank.

Further, this reduced pressure condensing tank is connected to the above-mentioned evaporation tank, and as the inside of this reduced pressure condensing tank is decompressed by the action of the ejector mechanism, the pollution generated by heating in the evaporation tank is generated. The cleaning liquid vapor is introduced into the vacuum condensation tank. By this introduction, the vapor supplied from the evaporation tank is contacted with the cooling liquid supplied from the injection port and condensed in the depressurization condensing tank.

Since the contact between the cooling liquid and the steam is the contact between the liquid and the steam, as compared with the contact between the cooling pipe and the steam,
The contact area can be significantly increased, the condensation efficiency can be improved, and extremely rapid condensation can be achieved. Then, the cleaning liquid condensed and liquefied in the reduced pressure condensing tank is sucked by the suction portion of the ejector mechanism and introduced into the cooling tank.

Then, while being cooled by a cooling pipe in this cooling tank, the ejector mechanism re-introduces it into the depressurized condensing tank, ejects it from the injection port, and supplies it from the evaporation tank. Contact and condense this. Further, a part of the condensate, which has become the condensate and is introduced into the cooling tank, is introduced into another appropriate cleaning liquid accommodating portion due to the overflow in the cooling tank.

As described above, according to the present invention, since the condensation is performed by the contact between the liquid and the vapor, the vapor can be condensed very efficiently. Further, in the case of the contact condensation of the liquid and the vapor, if the temperature difference between the vapor and the liquid is somewhat, the condensation can be easily performed. However, when the vapor is condensed by a cooling pipe or the like, the surface area of the cooling pipe is small, so that the condensation cannot be efficiently performed unless the temperature difference is large. Therefore, in the conventional method, the cooling energy is increased and the distillation regeneration cost is increased.

Further, in the present invention, the cooling liquid in the cooling tank is only circulated by the ejector mechanism so as to guide the cooling liquid to the reduced pressure condensation tank or introduce the vapor in the evaporation tank into the reduced pressure condensation tank. Alternatively, it is possible to perform all operations such as introducing the cleaning liquid condensed in the reduced pressure condensing tank to the cooling tank. Therefore, it is possible to efficiently distill and regenerate the dirty cleaning liquid with a simple mechanism.

Further, in the above-mentioned first invention, the ejector mechanism is used to introduce the cooling liquid in the cooling tank to the reduced pressure condensing tank or to introduce the cleaning liquid condensed in the reduced pressure condensing tank into the cooling tank. However, in a different second invention, the vacuum pump is connected to the reduced pressure condensing tank without using the ejector mechanism. Further, a suction pump is connected between the cooling tank and the reduced pressure condensation tank.

Then, the suction pump guides the cooling liquid in the cooling tank to the depressurizing condensing tank, supplies the cooling liquid to the depressurizing condensing tank, and operates the vacuum pump connected to the cooling tank to depressurize the cooling tank. State. Due to the action of this vacuum pump, the pressure inside the decompression condensing tank is also reduced, and the vapor supplied from the evaporation tank is condensed by contact with the cooling liquid.

Further, the condensed cleaning liquid is sucked into the cooling tank by the pressure reducing action of the vacuum pump and mixed with the cooling liquid in the cooling tank. Of course, the cooling liquid and the condensed cleaning liquid are of the same quality. Then, a part of the condensate supplied to this cooling tank is circulated to the decompression condensate tank through the suction pump, and a part of it overflows from the cooling tank to be stored in the clean cleaning liquid storage section. It is what is done.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIG. 1. (1) is a cooling tank, which is formed by winding a cooling pipe (2) which constitutes a cooling mechanism inside, to prevent contamination. It is filled with a cooling liquid (4) obtained by cooling a cleaning liquid of the same quality as the cleaning liquid (3). Also,
The cooling tank (1) has an ejector mechanism (5) connected to the side surface.

This ejector mechanism (5) has a flow pump in the middle of the flow pipe (6) whose both ends are connected to the cooling tank (1).
Place (7). With this circulation pump (7), a cooling tank
The cooling liquid (4) in (1) is sucked and returned to the cooling tank (1) for circulation. Then, a suction part (8) is provided in the flow pipe (6) at a distance between the flow pump (7) and the cooling tank (1). In addition, an inlet pipe (11) whose one end is connected to the reduced pressure condensing tank (10) is connected to the suction unit (8) with a cooling liquid.
It is connected at right angles to the distribution direction of (4). By connecting the introduction pipe (11) to the distribution pipe (6) at a right angle in this way, a suction portion (8) is formed at this connection portion.

The reduced pressure condensing tank (10) having the upper end of the introduction pipe (11) connected to the lower end is provided with an injection port (12) for supplying the cooling liquid (4). The injection port (12) communicates with the cooling tank (1) through the communication pipe (14) through the opening / closing valve (13), and the cooling liquid (4) in the cooling tank (1) can be supplied.

Further, the supply of the cooling liquid (4) to the reduced pressure condensing tank (10) from the injection port (12) is performed by spraying the cooling liquid (4) from the injection port (12). It may be provided, or the cooling liquid (4) may be supplied into the decompression condensing tank (10) in the form of a shower, or the cooling liquid (4) may be supplied in the form of a curtain to the decompression condensing tank (10). It may be supplied. And when supplying the cooling liquid (4) in a curtain shape,
A baffle plate or the like may be provided, and the cooling liquid (4) may be brought into contact with the baffle plate to allow the cooling liquid (4) to flow down, or the liquid curtain may be formed by allowing the cooling liquid (4) to drop naturally. May be.

The reduced pressure condensing tank (10) includes an evaporating tank.
(15) is connected through a connecting pipe (16). This evaporation tank
(15) is used for cleaning the object to be cleaned and is filled with the polluted contaminated cleaning liquid (3), which is a heating unit provided at the lower end.
It is heated by (17) and steam is generated by heating it up to the boiling point.

Then, this vapor is introduced into the depressurizing condensing tank (10) through the connecting pipe (16), and the cooling liquid (4) supplied from the injection port (12) in the depressurizing condensing tank (10). ) And is condensed. Then, when the ejector mechanism (5) is operated by the flow pump (7) with the on-off valve (13) opened, the cooling liquid (4) in the cooling tank (1) flows through the flow pipe (6). By circulating, a suction effect is produced in the suction part (8).

Due to this suction effect, the inside of the reduced pressure condensing tank (10) connected via the introduction pipe (11) is in a reduced pressure state.
Due to the occurrence of this depressurized state, the connecting pipe is connected from the evaporation tank (15).
Steam is sucked in through (16), and cooling liquid (4) is injected into the depressurization condensing tank (10) from the cooling tank (1) connected through the communication pipe (14). Supplied through mouth (12).

By thus operating the ejector mechanism (5), the cooling liquid (4) is supplied to the depressurizing condensing tank (10) and the vapor in the evaporating tank (15) is depressurizing condensing tank (10).
Is supplied to. Then, in the reduced pressure condensing tank (10), the contact of the cooling liquid (4) with the steam enables efficient and rapid condensation of the steam, and the efficient distillation regeneration of the polluted cleaning liquid (3). You can do things.

Further, in the above embodiment, the evaporation tank (15)
Was used only to vaporize the dirty cleaning solution (3),
In the second embodiment shown in FIG. 2, the evaporation tank (15) can be used as a steam cleaning tank together with the generation of steam of the polluted cleaning liquid (3). In the embodiment shown in FIG. 2, the outer peripheral tank (18) is arranged around the outer periphery of the evaporation tank (15) with a constant interval. This peripheral tank (18) is an evaporation tank (15)
The heat medium (20) is interposed between the and. This heat medium (2
As for 0), oil, liquid, or any other appropriate material can be selectively used.
The heat medium (20) is heated by (17). The heating temperature of the heat medium (20) can be adjusted as appropriate, but it must be heated to the boiling point of the polluted cleaning liquid (3) or higher.

A cooling coil (21) which allows cooling water to flow is wound around the inner circumference of the evaporation tank (15). The cooling coil (21) is wound around and fixed to the inner periphery of the evaporation tank (15) in the upper direction, and the cooling water can be optionally supplied or not.

In this state, if the dirty cleaning liquid (3) is supplied to the evaporation tank (15) and heated by the heat medium (20), the dirty cleaning liquid (3) in the evaporation tank (15) evaporates, Vacuum condensing tank (1
0). By supplying the reduced pressure condensing tank (10), the vapor can be condensed by the same operation as that of the first embodiment. In principle, the solvent is supplied to the evaporation tank (15) by supplying the polluted cleaning liquid (3), but the cooling tank (1) and the evaporation tank (15) are
The clean cooling liquid (4) may be supplied to the evaporation tank (15) by communicating with the auxiliary communication pipe (28) through the auxiliary valve (27). Further, the waste liquid tank (22) is an evaporation tank (1
5) and the auxiliary valve (27) are connected to the auxiliary communication pipe (28).

The vapor generation in the evaporation tank (15) can also be performed by filling the evaporation tank (15) with the dirty cleaning liquid (3) in advance. However, in another different embodiment, a sewage tank (22) is connected to the evaporation tank (15), and from this sewage tank (22), a small amount of the pollution cleaning liquid (3) is evaporated. It is also possible to instantly evaporate the polluted cleaning liquid (3).

In this case, if a very small amount of the dirty cleaning liquid (3) is supplied from the waste liquid tank (22) to the evaporation tank (15), the heat medium (20) has a relatively small capacity. Even if it is a thing, since the amount of the dirty cleaning liquid (3) supplied is small, rapid vaporization is possible. When the pollutant cleaning liquid (3) is flammable, the risk of ignition can be reduced because the amount of the polluted cleaning liquid (3) to be heated is small.

Then, vapor can be generated in the evaporation tank (15) while successively supplying a small amount of the dirty cleaning liquid (3) from the waste liquid tank (22). Also, in the above method, the vapor of the polluted cleaning liquid (3) generated in the evaporation tank (15) was supplied to the reduced pressure condensation tank (10).
It is also possible to use the evaporation tank (15) as a steam cleaning tank without supplying steam to (10). In this case, cooling water is passed through the cooling coil (21).

When steam is generated in the evaporation tank (15), the steam rises, but at the upper end, it contacts the cooling coil (21) to be condensed, and above that, the upper part. Can't rise to. Therefore, the portion of the evaporation tank (15) below the cooling coil (21) is filled with steam, and if the cleaning object is placed in this evaporation tank (15), the cleaning object is cleaned with steam. It is possible to do. As described above, in the second embodiment, the evaporation tank (15) can be used as a vapor cleaning tank or as a distillation tank, which enables multipurpose use. FIG.
In this case, a decompression regulator (29) is installed in the connecting pipe (16) for supplying steam from the evaporation tank (15) to the decompression condensation tank (10).

Further, in the above two embodiments, the cooling liquid (4) is supplied to the depressurizing condensing tank (10), and the depressurizing condensing tank is supplied.
Ejector mechanism (5) is used to introduce steam into (10).
According to the above, the pressure is reduced in the reduced pressure condensing tank (10). However, in another different third embodiment, as shown in FIG. 3, by using the suction pump (23) and the vacuum pump (24) without using the ejector mechanism (5), the first The second embodiment is constructed so as to produce the same effect as that of the second embodiment.

In this method, a vacuum pump (24) is connected to a cooling tank (1) filled with a cleaning liquid (4) of the same quality as the polluted cleaning liquid (3), and the cooling tank (1) is connected to the cooling tank (1). The inside of) can be decompressed. In addition, this cooling tank (1) is connected to a vacuum pump (23) via a supply pipe (25) through a depressurizing condensing tank.
It is connected to the injection port (12) of (10). By the suction action of the suction pump (23), the cooling liquid can be supplied to the injection port (12) in the reduced pressure condensing tank (10) through the supply pipe (25). Further, the depressurization condensing tank (10) and the cooling tank (1) are installed vertically, and the depressurizing condensing tank (10) is arranged at the upper part and the cooling tank (1) is arranged at the lower part. It communicates with the outflow pipe (26).

In the one configured as described above, the evaporation tank
When the contaminated cleaning liquid (3) is heated in (15) to generate steam, this steam is connected to the cooling tank (1) by a vacuum pump.
Along with the depressurizing action of (24), a cooling tank is provided through the outflow pipe (26).
The pressure in the reduced pressure condensing tank (10) connected to (1) is also reduced. Therefore, the vapor generated in the evaporation tank (15) is
It is introduced in (10). By simultaneously operating the suction pump (23), the cooling liquid (4) in the cooling tank (1) is supplied to the supply pipe (2).
It is supplied to the reduced pressure condensing tank (10) through the injection port (1).
It is supplied from 2) into the reduced pressure condensing tank (10). This coolant
By the supply of (4), the steam introduced from the evaporation tank (15) is connected to the cooling liquid (4) to perform a condensation action.

In this embodiment, since the vacuum pump (24) is installed in the cooling tank (1), the ejector mechanism is used.
Compared with the case of using (5), it is possible to increase the degree of pressure reduction in the cooling tank (1) and the pressure reducing condensation tank (10), which enables efficient suction and condensation of steam, and It is possible to more rapidly regenerate the dirty cleaning liquid (3) by distillation than in the second embodiment.

[0042]

Since the present invention is constructed as described above, it is possible to perform a very efficient condensation operation as compared with the case where the vapor is condensed by using a cooling pipe. Therefore, as a distillation / regeneration device for the polluted cleaning liquid, it is possible to quickly and inexpensively recycle the contaminated cleaning liquid.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing a second embodiment in which the evaporation tank can also be used as a steam cleaning tank.

FIG. 3 is a sectional view showing a third embodiment.

[Explanation of symbols]

 1 Cooling Tank 3 Contamination Cleaning Liquid 4 Cooling Liquid 5 Ejector Mechanism 10 Decompression Condensing Tank 12 Injection Port 15 Evaporating Tank 17 Heating Section

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[Procedure amendment]

[Submission date] February 16, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

Further, the cooling liquid (4) is supplied to the reduced pressure condensing tank (10) at the injection port (12) in the form of mist from the injection port (12).
(4) may be sprayed, the cooling liquid (4) may be supplied into the reduced pressure condensing tank (10) in a shower shape, or the cooling liquid (4) may be in a curtain shape. 4) may be supplied to the reduced pressure condensing tank 10. And
When the cooling liquid (4) is supplied in a curtain shape, a baffle plate or the like may be provided, and the cooling liquid (4) may be brought into contact with the baffle plate to allow the cooling liquid (4) to flow down. The liquid curtain may be formed by allowing () to fall naturally.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] Explanation of sign

[Correction method] Change

[Correction contents]

[Explanation of Codes] 1 Cooling Tank 3 Contamination Cleaning Liquid 4 Cooling Liquid 5 Ejector Mechanism 8 Suction Unit 10 Decompression Condensing Tank 12 Injection Port 15 Evaporating Tank 17 Heating Unit 21 Cooling Coil 23 Suction Pump 24 Vacuum Pump

Claims (6)

[Claims] 1. A cooling tank equipped with a cooling mechanism and filled with condensed cooling liquid, an ejector mechanism connected to this cooling tank to circulate the cooling liquid, and a suction part of this ejector mechanism and connected to the cooling tank. It consists of a depressurization condensing tank that supplies cooling liquid to the inside with the suction action of the suction part, and an evaporation tank that connects the injection port to this depressurization condensing tank and has a heating part that heats and evaporates the dirty cleaning liquid inside. Distillation regeneration equipment of the characteristic polluted cleaning liquid 2. A cooling tank which is equipped with a cooling mechanism and which is filled with condensed cooling liquid and which is connected to a vacuum pump to enable depressurization of the inside, and cooling liquid which is connected to this cooling tank and which is sucked by a suction pump. An apparatus for distilling and recycling a pollutant cleaning liquid, comprising: a vacuum condensing tank to be supplied inside; and an evaporating tank that is connected to an injection port of the vacuum reducing tank and has a heating section to heat and evaporate the polluted cleaning liquid inside. 3. The evaporation tank for the polluted cleaning liquid is characterized in that a cooling coil is wound around the inner periphery of the upper end to allow the cooling water to flow, and when the cooling water flows, the steam is retained inside for the steam cleaning. The distillation regenerating apparatus for polluted cleaning liquid according to claim 1 or 2. 4. The distillation regenerating apparatus for polluted cleaning liquid according to claim 1 or 2, wherein the cooling liquid is supplied to the reduced pressure condensing tank by spraying. 5. The supply of the cooling liquid to the reduced pressure condensing tank is carried out in the form of a shower.
Distillation regeneration equipment of polluted cleaning liquid. 6. The supply of cooling liquid to the reduced pressure condensing tank is performed by forming a liquid curtain.
Alternatively, the device for distilling and regenerating the polluted cleaning liquid according to item 2.