JP2834763B2 - Recycling and recovery equipment for cleaning solvents using organic solvents - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The apparatus for regenerating and recovering a solvent for a cleaning device using an organic solvent according to the present invention is a device for recovering oil or the like adhered to the surface of various articles using an organic solvent such as chlorofluorocarbon. Incorporate in the washer to remove dirt,
It is intended to prevent the organic solvent vapor from being released into the atmosphere and to prevent the organic solvent from deteriorating.

(Prior art) Mold, porous sintered metal for air bearing, IC board, etc.
BACKGROUND ART Generally, dirt such as oil adhered to the surface of various articles is cleaned by using an organic solvent such as chlorofluorocarbon and trichloroethylene as a cleaning liquid.

By using such an organic solvent as a cleaning solution,
One example of a washing machine that performs washing work is described in Jpn.
This will be described using the apparatus shown in Japanese Patent No. 595 as an example.

As shown in FIG. 3, this cleaning device has a cleaning tank 2 having a bottomed cylindrical shape with an open top and a lid 1 capable of airtightly closing an upper end opening, and a heater for heating and evaporating an organic solvent. A steam supply means 4 for feeding a relatively high-temperature organic solvent vapor into the cleaning tank 2 through a pipe 5 and a storage tank 6 for storing an organic solvent for cleaning for feeding into the cleaning tank 2. And a pipe 7 connecting the storage tank 6 and the cleaning tank 2,
A heater 12 for heating and evaporating a liquid organic solvent is combined with a cooler 11 for condensing vapor of the organic solvent, and a distilling unit 12 for sending the condensed organic solvent to the storage tank 6. A tube 8 connecting the still 12 with the distiller 12
And a liquid feed pump 9 provided in the middle of the pipe 8 is combined with the pipes 7 and 8 to form the washing tank 2 and the storage tank 6 or the evaporator 12.
Supply and discharge means 20 for supplying and discharging a liquid organic solvent between
An organic solvent vapor discharged from the cleaning tank 2 is connected to an end of a suction pipe 16 for feeding air into the cleaning tank 2 and an end of a discharge pipe 19 provided with a vacuum pump 13 on the way. An exhaust pipe for discharging air from the steam pipe 14 and the washing tank 2
It is composed of 15 and.

When the object to be cleaned 17 is to be cleaned by the cleaning device of the present invention configured as described above, the lid 1 is opened and the object to be cleaned 17 is opened.
Is stored in the washing tank 2, the lid 1 is closed, the vacuum pump 13 is operated, and the air in the washing tank 2 is discharged through the exhaust pipe 15.

After the air in the cleaning tank 2 is discharged, the organic solvent in the storage tank 6 is fed into the cleaning tank 2 through the pipe 7 constituting the supply / discharge means 20 to clean the object 17 to be cleaned. At this time, by energizing the ultrasonic vibrators 18, 18 fixed to the bottom of the cleaning tank 2, ultrasonic vibration is applied to the organic solvent in the cleaning tank 2 so that the object 17 to be cleaned is efficiently cleaned. To

When the cleaning operation with the liquid organic solvent is completed, the liquid feed pump 9 constituting the supply / discharge means 20 is operated,
The vapor of the organic solvent is supplied from the vapor supply means 4 into the cleaning tank 2 while the liquid organic solvent in the cleaning tank 2 is gradually fed into the still 12 through the pipe 8.

As a result, a part of the object 17 to be cleaned in the cleaning tank 2 is exposed on the liquid surface of the liquid organic solvent, and the vapor of the organic solvent is condensed at the exposed portion. A so-called steam cleaning in which the surface is cleaned is performed. In addition, the used dirty organic solvent sent into the still 12 is
Heated by the heater 10 provided in 12, evaporated, and then regenerated by condensed and liquefied again by the cooler 11,
It is returned to the storage tank 6.

If all of the liquid organic solvent in the cleaning tank 2 has been sent to the still 12 while performing steam cleaning, the vacuum pump 13 provided in the middle of the discharge pipe 19 is operated, and the liquid organic solvent remaining in the cleaning tank 2 is left. The organic solvent vapor is discharged into the distiller 12 through the drainage pipe 14. In this way, the evaporator is connected through the discharge pipe 19 and the
The vapor of the organic solvent discharged into 12 is condensed and liquefied by a cooler 11 provided in the distiller 12, and is collected. Cooler
The organic solvent vapor that could not be completely recovered by 11 is recovered by the secondary cooler 21, and a trace amount of organic solvent vapor that could not be recovered by the secondary cooler 21 is further collected by the activated carbon filter 22. You.

When the inside of the cleaning tank 2 reaches a predetermined degree of vacuum with the operation of the vacuum pump 13, the vacuum pump 13 is stopped, and air is sent into the cleaning tank 2 through the suction pipe 16.

As a result, when the pressure in the cleaning tank 2 rises to about the atmospheric pressure, the lid 1 of the cleaning tank 2 is opened, and the object 17 to be cleaned after the cleaning work is taken out.

(Problems to be Solved by the Invention) However, in the distillation apparatus 12 which is a solvent recovery / recovery apparatus which is constructed and operates as described above, and which is incorporated in the conventional or prior-art cleaning apparatus. Causes the following disadvantages.

That is, when the organic solvent sent from the cleaning tank 2 to the distillation unit 12 is heated and evaporated by the heater 10 and condensed by the cooling unit 11 with the completion of the cleaning step, the pressure in the distillation unit 12 decreases. I do.

When the pressure in the distiller 12 decreases in this way, outside air is sucked into the distiller 12 through a pipe 25, and water vapor contained in the outside air passes while passing through the secondary cooler 21. Alternatively, by contacting the cooler 11 in the still 12, the water is condensed to form water droplets.

The water droplets generated in this way are mixed with the organic solvent condensed by the cooler 11 or the secondary cooler 21 and sent to the storage tank 6 as it is. The organic solvent sent into the cleaning tank 2 gradually deteriorates due to mixing of water.

The apparatus for regenerating and recovering a solvent for a washing machine using an organic solvent according to the present invention eliminates the above-mentioned disadvantages.

(Means for Solving the Problems) In any of the apparatus for regenerating and recovering a solvent for a cleaning device using an organic solvent according to the present invention, a cleaning tank that can be hermetically sealed in a state in which an object to be cleaned is stored, and a cleaning tank in the cleaning tank. Used organic solvent discharged from the cleaning tank, which is incorporated in a cleaning device using an organic solvent, comprising a supply means capable of sending an organic solvent for use, and a vacuum pump for discharging gas present in the cleaning tank. A solvent recovery and recovery device used to recover the organic solvent vapor present in the gas by feeding the gas discharged from the vacuum pump while regenerating the solvent. And a heater provided at the bottom of the storage portion for heating and evaporating a liquid organic solvent present in the storage portion, and disposed in a closed space provided above the storage portion, Organic solvent It comprises a cooler that condenses and liquefies, and a receiving part that receives the organic solvent condensed by the cooler and sends it out to the storage tank.

Further, in the case of the apparatus for regenerating and recovering a solvent for a washing machine using an organic solvent according to claim 1, an airtight container in which a liquid organic solvent is stored, and the organic solvent in the airtight container are cooled below freezing. Cooling means, one end of which is open to the atmosphere, the other end of which is opened in the organic solvent in the sealed container, and the other end is opened in the upper space of the sealed container, and the other end is opened in the closed space. A communication pipe, a first check valve provided in the middle of the communication pipe, and allows gas to pass only from the sealed container toward the sealed space, and discharged from the sealed container,
A secondary cooler that cools a gas containing an organic solvent vapor, condenses the organic solvent vapor in the gas, and recovers the organic solvent,
A second check valve is provided in the middle of a passage communicating the secondary cooler installation portion with the external space, and allows gas to pass only from the secondary cooler to the external space.

Furthermore, in the case of the apparatus for regenerating and recovering a solvent for a washing machine using an organic solvent according to claim 3, a first sealed container in which a liquid organic solvent is stored therein, and an organic solvent in the first sealed container. A first cooling means for cooling the solvent to below freezing, a suction pipe having one end opened to the atmosphere and the other end opened into the organic solvent in the first closed container, and one end connected to the first closed container. Opened to the upper space, the other end was opened to the closed space, a first communication pipe, provided in the middle of the first communication pipe, gas only from the first closed container toward the closed space Pass through, the first check valve, the second closed container storing the liquid organic solvent inside, the organic solvent in the second closed container, the second cooling means to cool below freezing, A discharge pipe having one end open to the atmosphere and the other end open to the upper space in the second sealed container; A second communication pipe, which is opened in the organic solvent in the closed vessel and the other end is opened in the closed space, provided in the middle of the second communication pipe, and a second closed vessel is provided from the closed space. And a second check valve for allowing the gas to pass only toward.

(Operation) When the used organic solvent is regenerated or the organic solvent vapor is recovered by the solvent recovery and recovery device for a cleaning device using the organic solvent of the present invention configured as described above. The operation itself is the same as that of the above-described conventional or prior-art distiller incorporated in the washer.

However, in the case of the recovery and recovery device for a solvent for a cleaning device using the organic solvent of the present invention, the organic solvent vapor existing in the closed space is condensed and liquefied by the cooler, and when the pressure in the closed space is reduced, Outside air is stored in the suction pipe and the (first) closed container, and the first check valve is provided in the middle of the organic solvent cooled below the freezing point by the (first) cooling means (the second check valve). Then, it is sucked into the closed space by passing through the (i) communication pipe.

During this time, the outside air is sufficiently cooled by passing through an organic solvent cooled below the freezing point (for example, about −20 ° C.), and the water vapor contained in the outside air is frozen.

As a result, the air that is fed into the closed space through the (first) communication pipe and raises the pressure in the closed space is dried without water vapor.

Accordingly, water vapor in the air sucked into the closed space is not condensed by the cooler, and water is not mixed into the organic solvent flowing down to the receiving portion. It will not be deteriorated.

If the pressure in this closed space rises by sending used organic solvent into the storage section or sending organic solvent vapor present in the cleaning tank into the closed space, the gas present in the closed space Is discharged to the outside to lower the pressure in the closed space, but the organic solvent vapor contained in the gas is collected by being condensed by a cooler arranged in the closed space, and this cooling is performed. Those that could not be collected by the vessel are placed in a secondary cooler (in the case of claim 1) or in an organic solvent (in the case of claim 3) that has been cooled below freezing and is present in the second closed vessel. Is condensed and liquefied while passing through and recovered.

(Example) Next, the present invention will be described in more detail while describing the illustrated example.

FIG. 1 shows an embodiment of the present invention described in claim 1 as a first embodiment of the present invention.

In FIG. 1, reference numeral 26 denotes a storage part which forms a part of the distillation apparatus 12 which is a main part of the recovery and regeneration apparatus and stores a liquid organic solvent such as chlorofluorocarbon. Is provided so that the liquid organic solvent present in the storage section 26 can be heated and evaporated.

On the other hand, a cooler 11 for condensing and liquefying an organic solvent, such as an evaporator of a refrigerator, is provided in a closed space 27 provided above the storage section 26. Below the cooler 11 configured by winding a cooling pipe in a coil shape, a receiving portion 28 is provided.
Is provided so that the organic solvent condensed and liquefied by the cooler 11 and dropped downward can be collected. The receiving portion 28 and the storage tank 6 (FIG. 3) are connected by a return pipe 29 so that the organic solvent regenerated and recovered by the still 12 can be returned to the storage tank 6.

Reference numeral 30 denotes a closed container, in which a liquid organic solvent 31 of the same type as that used for the cleaning operation is stored. By disposing an evaporator 33 forming a part of a refrigerator 32, which is a cooling means, at the bottom of the closed container 30, the organic solvent 31 in the closed container 30 is cooled to about −20 ° C. and water. Cooling to sub-zero temperatures, low enough to freeze in a very short time.

Reference numeral 34 denotes a suction pipe. One end of the suction pipe 34 is open to the atmosphere, and the other end is connected to a porous member 35 (a porous pipe or a porous material) immersed in an organic solvent 31 in a closed container 30. doing.

Reference numeral 36 denotes a communication pipe. One end of the communication pipe 36 is open to the upper space 37 of the closed vessel 30 and the other end is the distiller 12.
It opens into the upper enclosed space 27. In the middle of the communication pipe 36, a first check valve 38 for passing gas only from the closed vessel 30 toward the closed space 27 above the still 12 is provided.

Further, reference numeral 39 denotes a discharge pipe for releasing a part of the gas present in the closed space 27 to the outside when the pressure in the closed space 27 rises. space
In order from one end on the 27 side, a gas containing organic solvent vapor is cooled, the organic solvent vapor in this gas is condensed, and a secondary cooler 21 for recovering the organic solvent is collected from the secondary cooler 21 to the external space. A second check valve 40 is provided for passing gas only toward the second check valve. The other end of the discharge pipe 39 is, as shown in FIG.
Even if it is open to the atmosphere as it is, or as shown in FIG.
It may be opened to the atmosphere via the activated carbon filter 22.

The operation itself in the case of regenerating the used organic solvent or recovering the organic solvent vapor by the apparatus for regenerating and recovering the solvent for the washer using the organic solvent of the present invention configured as described above is described. This is the same as the distilling unit 12 incorporated in the above-mentioned conventional or prior invention washer.

That is, after being used for the cleaning operation, the organic solvent containing the dirt attached to the object to be cleaned is sent into the storage section 26 through the pipe 8, heated and evaporated by the heater 10, condensed and liquefied by the cooler 11, and It is cleaned and regenerated.

The organic solvent vapor remaining in the washing tank 2 and sent into the distiller 12 through the vacuum pump 13 is discharged from the evaporator 14 and the pipe 8.
And is condensed by the cooler 11 disposed in the closed space 27 and collected.

However, in the case of the apparatus for regenerating and recovering a solvent for a cleaning device using the organic solvent of the present invention, when the organic solvent vapor present in the closed space is condensed and liquefied by the cooler, the pressure in the closed space 27 decreases. , The outside air flows from the suction pipe 34 to the closed space 27
It is sucked toward. In this manner, the outside air sucked from the suction pipe 34 toward the sealed space 27 first flows from the porous member 35 connected to the end of the suction pipe 34 into the organic solvent 31 stored in the closed container 30 with fine bubbles. It is sent as

Since this organic solvent 31 is cooled to a sufficiently low temperature below -20 ° C. by an evaporator 33 forming a part of a refrigerator 32, the outside air sent as fine bubbles is reduced to an organic solvent. By passing through the inside of 31, it is cooled sufficiently, and the water vapor contained in the outside air is frozen. The ice generated by the freezing remains in the closed container 30 as it is.

As a result, the air existing in the upper space 37 of the sealed container 30 becomes dry with a very small water vapor content.
The air present in the upper space 37 is further fed into the closed space 27 above the still 12 through a communication pipe 36 provided with a first check valve 38 on the way, and the pressure in the closed space 27 is increased. (Return to atmospheric pressure).

As described above, since the air sent into the closed space 27 above the still 12 is dried after removing the water vapor, the water vapor in the air sucked into the closed space 27 is cooled.
Is no longer condensed, and the cooling unit 11
To prevent water from entering the organic solvent flowing down to the
The organic solvent for washing does not deteriorate due to the mixing of water.

Also, the used organic solvent is sent to the reservoir 26,
Alternatively, when the pressure in the closed space 27 rises by sending the organic solvent vapor present in the cleaning tank 2 into the closed space 27, the gas present in the closed space 27 is discharged to the outside through the discharge pipe 39. By discharging, the pressure in the closed space 27 is reduced (down to atmospheric pressure).

When the pressure in the closed space 27 is reduced as described above, the organic solvent vapor contained in the gas is collected by being condensed by the cooler 11 arranged in the closed space 27, and a large amount of the organic solvent vapor is collected. However, it is not emitted outside through the discharge pipe 39. However, what has not been completely collected by the cooler 11 is condensed and liquefied while passing through the secondary cooler 21 and collected.

However, if the capacity of the cooler 11 arranged in the closed space 27 is sufficient, the secondary cooler 21 may be omitted.

Next, FIG. 2 shows a second embodiment of the present invention.
2 shows an embodiment of the invention described in FIG.

In the case of the present embodiment, when the pressure in the sealed space 27 is reduced, not only is the external air sucked through the low-temperature organic solvent, but also when the pressure rises, the gas is discharged through the low-temperature organic solvent. I am doing it.

That is, in the case of the present embodiment, the organic solvent 31 in the first closed container 41 in which the liquid organic solvent 31 is stored is reduced by the evaporator 33 constituting the refrigerator 32 as the first cooling means. The suction pipe 34 whose one end is open to the atmosphere is connected to a porous member 35 immersed in the organic solvent 31 while allowing free cooling to a sufficiently low temperature below the freezing point of about 20 ° C. Also, one end is opened in the upper space 37 of the first closed container 41, and the other end is opened in the closed space 27. A first check valve 38 is provided to allow the gas to pass only toward the.

The above configuration is the same as that of the first embodiment described above, but in the case of this embodiment, the secondary cooler of the first embodiment is used.
Instead of 21, a second sealed container 43 in which a liquid organic solvent 31 is stored is provided.

The organic solvent 31 in the second closed container 43 can be cooled to a sufficiently low temperature below -30 ° C. by an evaporator 45 of a refrigerator 44 as a second cooling means.

In the upper space 46 of the second hermetic container 43, the other end of a discharge pipe 47 having one end open to the atmosphere is opened, and a porous member 48 immersed in the organic solvent 31 in the second hermetic container 43 is provided. The other end of the second communication pipe 49, which is connected to one end, is opened to the closed space 27 above the still 12.

In the middle of the second communication pipe 49, a second check valve 50 that allows gas to pass only from the closed space 27 toward the second closed container 43 is provided.

In the case where the used organic solvent is regenerated or the organic solvent vapor is recovered by the regenerating and recovering apparatus for the solvent for the cleaning device using the organic solvent according to the second embodiment configured as described above. The operation itself is the same as that of the above-described conventional or prior-art distiller 12 incorporated in the washer, and the closed space is used.
When the organic solvent vapor present in 27 is condensed and liquefied by the cooler 11, when the pressure in the closed space 27 is reduced,
The air sent into the closed space 27 above the distiller 12 is dried with the water vapor removed, and the water vapor in the air sucked into the closed space 27 is prevented from being condensed by the cooler 11 and washed. It is the same as in the case of the above-described first embodiment that the organic solvent for use is prevented from being deteriorated by mixing of water.

However, in the case of this embodiment, the used organic solvent is stored in the storage section.
26 or the organic solvent vapor present in the cleaning tank 2 is fed into the closed space 27 so that
When the pressure rises, the gas present in the closed space 27 is discharged to the outside through the second communication pipe 49, the second closed vessel 43, and the discharge pipe 47, so that the inside of the closed space 27 is discharged. Reduce pressure.

When the pressure in the closed space 27 is reduced in this way, the organic solvent vapor contained in the gas is collected by being condensed by the cooler 11 arranged in the closed space 27, and many organic solvent vapors are collected. Although it is not radiated to the outside through the discharge pipe 47, those that cannot be collected by the cooler 11 are the low-temperature organic solvent 31 stored in the second closed container 43.
, And is condensed and liquefied while passing through the second closed container 43.

The organic solvent 31 stored in the closed container 30, the first and second closed containers 41 and 43 is cooled down to about −20 ° C. and a considerably low temperature. Not
The organic solvent 31 in each of the closed containers 30, 41, 43 is hardly diffused into the atmosphere.

Further, the first closed container 41 and the second closed container 43, and the refrigerators 32 and 44, the evaporators 33 and 45 do not need to be provided independently, respectively, in a single closed container, the first, the second Communication pipe 42,
49, a suction pipe 34 and a discharge pipe 47 can also be provided. However, in this case, by providing a partition at the upper part of the single closed container, the upper space of the single closed container is partitioned into two chambers, and the suction pipe 34 is discharged into one chamber and the discharge pipe is discharged into the other chamber. The tubes 47 are each opened.

(Effect of the Invention) Since the apparatus for regenerating and recovering a solvent for a washing machine using an organic solvent according to the present invention is configured and operates as described above, the amount of the organic solvent released to the atmosphere is reduced, and It is possible to effectively prevent the organic solvent from deteriorating due to water being mixed in the organic solvent.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view showing a first embodiment of a recycling and recovery apparatus of the present invention, FIG. 2 is a schematic longitudinal sectional view showing a second embodiment of the same, and FIG.
The figure is a schematic vertical sectional view showing an example of the cleaning device. 1: lid, 2: cleaning tank, 3: heater, 4: steam supply means, 5: pipe, 6:
Reservoir, 7, 8: pipe, 9: liquid feed pump, 10: heater, 11: cooler, 12: still, 13: vacuum pump, 14: exhaust pipe, 15: exhaust pipe, 16: intake pipe, 17: object to be cleaned, 18: ultrasonic vibrator, 19: discharge pipe, 20: supply / discharge means, 21: secondary cooler, 22: activated carbon filter, 23, 24: valve, 25: pipe, 26: storage section , 27: closed space, 28:
Receiving part, 29: return pipe, 30: sealed container, 31: organic solvent, 32: refrigerator, 33: evaporator, 34: suction pipe, 35: porous member, 36: communication pipe, 37: upper space, 38: No. One check valve, 39: exhaust pipe, 40:
Second check valve, 41: first closed container, 42: first communication pipe,
43: second closed container, 44: refrigerator, 45: evaporator, 46:
Upper space, 47: discharge pipe, 48: porous member, 49: second communication pipe, 50: second check valve.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B01D 5/00 B08B 3/08 C23G 5/04

Claims (4)

(57) [Claims] 1. A cleaning tank that can be hermetically sealed with an object to be cleaned stored therein, supply means capable of sending an organic solvent for cleaning into the cleaning tank, and a vacuum for discharging gas present in the cleaning tank. It is incorporated in a washing machine using an organic solvent consisting of a pump, and the used organic solvent discharged from the washing tank is fed in to regenerate, and the gas discharged from the vacuum pump is sent in, so that it is present in the gas. A solvent recovery device for recovering the vapor of the organic solvent, comprising: a storage section for storing a liquid organic solvent; and a storage section provided at the bottom of the storage section for heating the liquid organic solvent present in the storage section. A heater for evaporating, a cooler disposed in a closed space provided above the storage portion for condensing and liquefying the organic solvent, and a receiving device for receiving the organic solvent condensed by the cooler and sending it to the storage tank. Department and A sealed container storing a liquid organic solvent therein, cooling means for cooling the organic solvent in the sealed container to below freezing, one end opened to the atmosphere, and the other end opened into the organic solvent in the sealed container. Suction pipe, a communication pipe having one end opened in the upper space of the closed vessel and the other end opened in the closed space, and a gas pipe provided in the middle of the communication pipe only from the closed vessel toward the closed space. A first check valve to be passed, and a secondary cooler that cools a gas containing an organic solvent vapor discharged from the closed space, condenses the organic solvent vapor in the gas, and recovers the organic solvent. A second check valve that is provided in the middle of a passage communicating the secondary cooler installation portion and the external space, and that allows a gas to pass only from the secondary cooler toward the external space. Recycling and recovery equipment for solvent used in the washer. 2. The apparatus according to claim 1, wherein the secondary cooler is omitted. 3. A cleaning tank which can be hermetically sealed with an object to be cleaned stored therein, supply means which can send an organic solvent for cleaning into the cleaning tank, and a vacuum which exhausts gas present in the cleaning tank. It is incorporated in a washing machine using an organic solvent consisting of a pump, and the used organic solvent discharged from the washing tank is fed in to regenerate, and the gas discharged from the vacuum pump is sent in, so that it is present in the gas. A solvent recovery device for recovering the vapor of the organic solvent, comprising: a storage section for storing a liquid organic solvent; and a storage section provided at the bottom of the storage section for heating the liquid organic solvent present in the storage section. A heater for evaporating, a cooler disposed in a closed space provided above the storage portion for condensing and liquefying the organic solvent, and a receiving device for receiving the organic solvent condensed by the cooler and sending it to the storage tank. Department and A first sealed container storing a liquid organic solvent therein, a first cooling means for cooling the organic solvent in the first sealed container to a temperature below freezing, one end opened to the atmosphere, and the other end opened to the atmosphere. A suction pipe opened into the organic solvent in one closed vessel, a first communication pipe having one end opened in the upper space of the first closed vessel, and the other end opened in the closed space, A first check valve, which is provided in the middle of the first communication pipe and allows gas to pass only from the first closed container toward the closed space, and a second closed container storing a liquid organic solvent therein And a second cooling means for cooling the organic solvent in the second closed container to a temperature below freezing, and a discharge pipe having one end opened to the atmosphere and the other end opened to the upper space in the second closed container. When,
One end is opened in the organic solvent in the second closed vessel, the other end is opened in the closed space, a second communication pipe, provided in the middle of the second communication pipe, the second from the closed space An apparatus for regenerating and recovering a solvent for a washer using an organic solvent, the apparatus comprising a second check valve for passing gas only toward the second closed container. 4. The first closed container and the second closed container are the same container, the first cooling unit and the second cooling unit are the same cooling unit, and a single closed container is provided. 4. The apparatus for regenerating and recovering a solvent for a washing machine using an organic solvent according to claim 3, wherein a partition wall is provided in an upper space for separating an opening of the suction pipe and an opening of the discharge pipe.