JP2000279704A - Solvent recovering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solvent recovering device which is suitable for a desktop device of this kind and in which the number of parts such as condensers, buffers, leak valves, and the like is reduced, the construction is simplified and is miniaturized and made light in weight, and an installing space is made compact and inexpensive, and also that life of a vacuum pump is improved, solvent recovery action is stabilized, and solvent recovery work is rationalized productivity is increased. SOLUTION: Solvent vapor is led to a condenser 6 to cool and liquefy it, and liquefied solvents 5 and 13 are recovered in recovering vessels 3 and 12. Plural solvent recovering pipes 2 and 10 into which the solvent vapor can be introduced are provided. The solvent recovering pipes 2 and 10 are made to communicate with each other to enable the solvent vapor to move in order. A part of each of the solvent recovering pipes 2 and 10 is laid in a single condenser 6. The solvent recovering pipes 2 and 10 can be provided with the recovering vessels 3 and 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for a desk-mounted device of this type, which reduces the number of components such as a capacitor, a buffer and a leak valve, simplifies the structure, reduces the size and weight,
In addition to reducing the size and cost of the installation space and improving the life of the vacuum pump, stabilizing the solvent recovery operation, and streamlining the solvent recovery operation, the solvent recovery rationalization and productivity are improved. It relates to a recovery device.

[0002]

2. Description of the Related Art Conventionally, as an apparatus of this type, for example, Japanese Utility Model Registration No. 3046413, a vacuum pump is disposed between a primary condenser and a secondary condenser, and most of the solvent vapor is passed through the primary condenser. While cooling and liquefying, a gas having a low solvent vapor concentration is sucked by a vacuum pump, the remaining solvent vapor is liquefied and cooled by a secondary condenser to recover the solvent.

In the above conventional apparatus, the solvent vapor generated from the two evaporators is almost liquefied and collected by two primary condensers, one for each, so that the amount of solvent sucked by the vacuum pump is reduced, and While improving the life of
Since three condensers are required as a whole, the equipment becomes expensive, a large installation space is required, the piping structure becomes complicated, and the solvent is individually recovered from the three condensers. Is complicated and time-consuming,
During the recovery of the solvent by driving the vacuum pump, there is a problem that the solvent liquid cannot be taken out of the recovery container even if the solvent liquid is likely to be saturated.

On the other hand, among conventional devices of this type, there is a device in which one condenser is arranged on the discharge side of a vacuum pump as disclosed in, for example, Japanese Patent Application Laid-Open No. 1-270903. The above device has a simple configuration and requires little installation space, and can be manufactured at low cost.However, since the high-concentration solvent vapor is directly introduced into the vacuum pump, the solvent liquid easily condenses inside the pump, and the pump Since the life is shortened and there is no buffer space on the suction side of the pump, there is a problem that sudden pressure fluctuations such as bumping cannot be absorbed and the solvent recovery operation becomes unstable.

[0005]

SUMMARY OF THE INVENTION The present invention solves such a problem and is suitable for a desk-mounted type device of this type. The number of components such as a capacitor, a buffer and a leak valve is reduced, and the structure is simplified. In addition to reducing the size and weight, as well as reducing the size and cost of the installation space, the life of the vacuum pump is improved, the solvent recovery operation is stabilized, and the solvent recovery operation is rationalized, thereby improving the rationalization and productivity of the solvent recovery. An object of the present invention is to provide a solvent recovery device as described above.

[0006]

According to a first aspect of the present invention, there is provided a solvent recovery apparatus in which a solvent vapor is introduced into a condenser to be cooled and liquefied, and the liquefied solvent can be recovered in a recovery container. A plurality of solvent recovery pipes are provided, and the solvent recovery pipes are communicated so that the solvent vapor can be sequentially moved, and a part of each solvent recovery pipe is piped inside a single condenser, and each solvent recovery pipe is A collection container can be installed,
In addition to reducing the number of capacitors, the piping structure is simplified, the structure is simplified and the size and weight are reduced, and the installation space is made compact and inexpensive. The solvent can be recovered rationally by the condenser described above. According to the invention of claim 2, each of the solvent recovery pipes is piped vertically or obliquely, and the recovery container is installed at the lower end of these solvent recovery pipes. At the same time, the free fall of the solvent is promoted to facilitate the recovery of the solvent. The invention according to claim 3 is configured such that the recovery container is detachably connected to all or a part of each of the solvent recovery tubes, thereby facilitating the configuration and production of the recovery container or the solvent recovery tube, and removing and attaching the recovery container. Easy to do.

According to a fourth aspect of the present invention, a solvent vapor supply pipe communicating with a solvent vapor generation source is connected to the one solvent recovery pipe, and a vacuum pump is inserted downstream of one of the solvent recovery pipes. The low-density solvent vapor after vapor liquefaction is led to a vacuum pump to prevent condensation in the pump, thereby improving the life of the vacuum pump. In addition, the collection container arranged on the suction side of the vacuum pump has a buffer effect,
Along with stabilizing the solvent recovery operation, a dedicated buffer is omitted and the configuration is simplified. The invention of claim 5 is
Each of the recovery containers is made communicable via a switching valve, and each of the recovery containers is set to the same pressure (atmospheric pressure) so that the recovery of the solvent in the container is facilitated and the recovery operation is not complicated. According to the invention of claim 6, the communication between the recovery containers is cut off via the switching valve, the solvent recovered in each solvent recovery pipe can be stored in each recovery container, and the amount of the recovered solvent is dispersed and stored in each container. In addition, it is possible to eliminate the frequent and complicated work of attaching and detaching the collecting container associated with a small number of containers.

According to a seventh aspect of the present invention, all or a part of each recovery container is communicated via a switching valve, and all or a part of the solvent can be accommodated in one or a plurality of recovery containers. The collection is rationalized and the labor of the collection work can be eliminated. In the invention of claim 8, the switching valve is a two-way valve or a three-way valve, and the solvent recovery can be rationalized. According to a ninth aspect of the present invention, a three-way valve is used as the switching valve, and communication of all or a part of the recovery container is interrupted through the three-way valve, or the recovery container and the solvent recovery pipe inserted through the three-way valve are interposed. The collection container is cut off from the solvent recovery operation system so that the collection container can be attached and detached even during the solvent recovery operation. According to a tenth aspect of the present invention, the switching valve is operable during a solvent recovery operation, and by operating the switching valve, the solvent in the recovery container can be treated while the solvent recovery operation is continued, thereby improving the solvent recovery productivity. ing. The invention according to claim 11 arranges each of the collecting containers in an up and down position, so as to reduce the width of the apparatus and make the installation space compact.

According to a twelfth aspect of the present invention, there is provided a solvent recovery apparatus in which a solvent vapor is introduced into a condenser to be cooled and liquefied, and the recovered solvent can be stored in a recovery container. Are provided, a part of the plurality of solvent recovery pipes is piped inside a single condenser, and a recovery container is detachably connected to each solvent recovery pipe, thereby reducing the number of condensers and reducing the piping structure. By simplifying the structure, the structure is simplified and the size and weight are reduced, and the installation space is made compact and inexpensive.Suitable for this type of table-top type device, and a single condenser makes it possible to rationally and reliably disparate solvents. I am trying to collect it. The invention according to claim 13 is arranged such that each of the solvent recovery pipes is vertically or obliquely piped,
While opening the upper end of these solvent recovery pipes to the atmosphere,
At the lower end, the collection container is installed to reduce the width of this type of apparatus and to make the installation space compact, promote free fall of each solvent, facilitate solvent collection, and clean air to the atmosphere. I try to discharge.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a preferred embodiment of the present invention.
Is a solvent vapor source such as a rotary evaporator at one end
(Not shown), the other end of which is connected to the lower end of the solvent recovery pipe 2.

A collecting container 3 is detachably attached to the lower end of the solvent collecting tube 2 via a stopper 4, so that the solvent 5 can be accommodated therein. In the figure, 3a is a collection container 3
It is the connection part of the mouth.

The solvent recovery pipe 2 is provided at an intermediate portion thereof.
Has a spiral tube portion 2a wound in a coil shape. The spiral tube portion 2a is disposed in the capacitor 6, and the upper end portion of the straight tube projects upward through the capacitor 6. The condenser 6 has a condenser chamber 7 capable of containing a refrigerant therein, and a pair of refrigerant conduits 8, 8 connected to a refrigerator (not shown) connected to side surfaces thereof, and the refrigerant is condensed through the pipes 8, 8. Circulating to the chamber 7.

One end of a conduit 9 is connected to the upper end of the solvent recovery pipe 2, that is, downstream of the solvent vapor, and the other end of the pipe 9 is connected to the lower end of a solvent recovery pipe 10. In the figure, 11
Is a vacuum pump interposed in the conduit 9.

At the lower end of the solvent recovery tube 10, a recovery container 12 similar to the container 3 is detachably attached via a stopper 4, and the same solvent 13 as the solvent 5 can be accommodated therein. I have. In the figure, reference numeral 12a denotes a connection portion at the mouth of the collection container 12.

The solvent recovery pipe 10 has substantially the same construction as the solvent recovery pipe 2, and has a spiral pipe section 10a formed by winding the pipe 10 in a coil shape at an intermediate portion thereof.
a is disposed in the condenser 6 adjacent to the spiral tube portion 2a, and the upper end of the straight pipe projects upward through the condenser 6 to open to the atmosphere.

In this embodiment, two solvent recovery pipes 2 and 10 are connected to the condenser 6, but it is also possible to add additional solvent recovery pipes and connect them. The collection tubes are communicated so that the solvent vapors can be sequentially moved, and the collection containers are detachably connected to the lower ends of the respective solvent collection tubes. By doing so, the solvent can be reliably and accurately recovered, and the exhaust gas can be prevented from polluting the atmosphere.

The solvent recovery apparatus thus configured has a single condenser 6, in which two spiral pipe sections 2a and 10a of two solvent recovery pipes 2 and 10 are arranged, and the condenser 6 is shared. Therefore, a condenser is arranged for each cooling point of the solvent, and compared with the conventional one that pipes them,
The number of capacitors has been reduced and the piping structure has been simplified,
The structure is simple, the installation space can be made compact and the size and weight can be reduced, and it can be manufactured at low cost. Further, since the recovery vessel 3 on the solvent vapor introduction side has a buffer effect as described later, a dedicated buffer can be omitted, the number of parts is reduced correspondingly, and the configuration is simplified.

Next, when the organic solvent is recovered by the above-mentioned apparatus, a refrigerator (not shown) is driven to circulate the refrigerant through the refrigerant conduits 8, 8, thereby cooling the condenser chamber 7. The collection containers 3 and 12 are hermetically attached to the lower ends of the solvent collection tubes 2 and 10 via the stoppers 4 and 4, respectively.

In such a situation, the vacuum pump 11 is driven to guide the solvent vapor from the organic solvent generation source to the solvent recovery pipe 2 via the solvent supply pipe 1 and move the solvent vapor to the spiral pipe section 2a. , Most of the solvent vapor is cooled and liquefied,
The liquefied solvent 5 flows down in the solvent supply pipe 2 and the recovery vessel 3
Will be collected.

In this case, the solvent supply pipe 1 communicates with the recovery vessel 3 via the solvent recovery pipe 2, and the vessel 3 has a buffer effect of absorbing and mitigating abnormal pressure fluctuation between the supply pipe 1 and the recovery pipe 2. Therefore, the solvent recovery operation is stabilized. Also,
The liquefaction of the solvent lowers the concentration of the solvent vapor and prevents condensation in the vacuum pump 11, so that the life of the pump 11 is improved.

Thereafter, the remaining organic solvent vapor is guided to the solvent recovery pipe 10 through the conduit 9, and moves to the spiral pipe section 10a. Therefore, the remaining solvent vapor is cooled and liquefied, and the liquefied solvent 13 flows down in the solvent recovery pipe 10 and is recovered in the recovery container 12. Then, clean air from which the organic solvent component has been removed is discharged from the upper end of the solvent recovery pipe 10 to the atmosphere.

The solvents 5 and 13 thus collected stop the vacuum pump 11 and perform a leak operation.
The collection containers 3 and 12 are removed through the operation 4 and discarded or reused.

FIGS. 2 to 9 show another embodiment of the present invention, and the same reference numerals are used for the portions corresponding to the configuration of the above embodiment. 2 and FIG. 3 show a second embodiment of the present invention.
The lower end portions of the collection containers 3 and 12 are arranged vertically and coaxially. That is, the collection container 3
The collection container 12 is disposed above the container. Therefore, the width is smaller than that of the above-described embodiment, and the installation space can be made more compact.

A switching valve 14, in this embodiment, a two-way valve, is inserted between the recovery container 12 and the lower end of the solvent recovery pipe 2. The communication with the collection container 3 is enabled.

In this embodiment, the two-way valve 1
The valve 4 is closed, and the communication between the collection containers 12 and 3 is cut off as shown in FIG. In this way, the vacuum pump 11 is driven to guide the solvent vapor from the organic solvent generation source to the solvent recovery pipe 2, which is moved to the spiral pipe section 2 a to be cooled and liquefied, and the liquefied solvent 5 is recovered in the recovery container 3.

On the other hand, the remaining organic solvent vapor is led to the solvent recovery pipe 10 via the conduit 9, moved to the spiral pipe section 10 a, cooled and liquefied, and the liquefied solvent 13 is recovered in the recovery vessel 12.

After the recovery of the solvent, the operation of the vacuum pump 11 is stopped, or the two-way valve 14 is opened during the operation of recovering the solvent at the time of driving, and the recovery containers 12 and 3 are connected. This way,
The solvent 13 in the recovery container 12 is guided to the solvent recovery pipe 2 and flows into the lower recovery container 3 to be recovered. This situation is illustrated in FIG.
Thus, by opening the two-way valve 14, the solvents 5, 13 in the two collection containers 3, 12 can be quickly and reliably collected and collected in one of the containers 3, and this kind of collection operation can be performed easily and simply. Can be done quickly.

The solvent 5, 13 thus recovered is turned off by stopping the vacuum pump 11 and operating the stopper 4.
Removed and discarded or reused. In this case, the opening of the two-way valve 14 causes the solvent recovery pipe 2 to reach atmospheric pressure and the suction side of the vacuum pump 11 to return to atmospheric pressure, so that no new leak operation or leak valve is required.

FIGS. 4 to 6 show a third embodiment of the present invention. In this embodiment, a three-way valve is used instead of a two-way valve as the directional control valve 14 of the second embodiment. In this embodiment, at the time of solvent recovery, via the three-way valve 14,
As shown in FIG. 4, communication between the collection containers 12 and 3 is shut off, and the solvent collection tube 2 is connected to the collection container 3.

Then, the vacuum pump 11 is driven to guide the solvent vapor from the organic solvent generation source to the solvent recovery pipe 2, which is moved to the spiral pipe section 2 a to be cooled and liquefied, and the solvent 5 is recovered in the recovery vessel 3. .

On the other hand, the remaining organic solvent vapor is led to the solvent recovery pipe 10 via the conduit 9, moved to the spiral pipe section 10 a to be cooled and liquefied, and the solvent 13 is recovered in the recovery vessel 12.

After the recovery of the solvent, the three-way valve 14 is switched, and FIG.
And the solvent collection tube 2 is communicated with the collection container 3. This way,
The solvent 13 in the recovery container 12 is guided to the solvent recovery pipe 2 and flows into the lower recovery container 3 to be recovered. As described above, the switching operation of the three-way valve 14 allows the two collection containers 3 and 1 to be operated.
Solvents 5 and 13 in 2 can be quickly and reliably collected and collected in one container 3, and this type of collection operation can be streamlined and can be performed simply and quickly.

On the other hand, when recovering the solvent during the solvent recovery operation, the three-way valve 14 is switched as shown in FIG.
The communication between the solvent collection tube 2 and the collection container 3 is cut off while the communication with the collection container 12 is interrupted.

As a result, the recovery container 3 is substantially separated from the solvent recovery system. Therefore, after that, the collection container 3 can be removed through the operation of the stopper 4, and the solvent 5 can be taken out.

After the solvent 5 is taken out, the empty collecting container 3
And the three-way valve 14 is switched to the state shown in FIG. In this case, the solvent recovery pipe 2 communicates with the recovery container 3,
The solvent 5 stored in the recovery pipe 2 flows down to the recovery container 3 and the communication between the recovery containers 3 and 12 is interrupted, so that the solvent 13 remains in the recovery container 12 and the solvent recovery state of FIG. I do. Thereafter, by repeating the above operation, a reliable and stable solvent recovery can be continuously performed.

FIGS. 7 and 8 show a fourth embodiment of the present invention. This embodiment belongs to an application example of the third embodiment, and a solvent supply pipe 1 is used instead of a solvent recovery pipe 2 in a recovery container. 12, and instead of connecting both ends of the conduit 9 to the upper end of the solvent recovery pipe 2 and the recovery vessel 12,
And the upper end of the solvent recovery pipe 10 is connected to the upper end of the solvent recovery pipe 10, and the upper end of the solvent recovery pipe 2 is opened to the atmosphere instead of the solvent recovery pipe 10.

Therefore, when recovering the solvent, most of the solvent vapor is cooled and liquefied in the spiral tube portion 10a, the solvent 13 is recovered in the recovery container 13, and the remaining solvent vapor is cooled and liquefied in the spiral tube portion 2a and liquefied. The solvent 5 is collected in the collection container 3. At this time, if the volume of the recovery container 12 on the suction side of the vacuum pump 11 is increased, the buffer effect of the container 12 increases, and a more stable recovery operation can be obtained.

When recovering the solvent 13 in the recovery container 12, the vacuum pump 11 is stopped, the three-way valve 14 is switched as shown in FIG. 8, and the solvent 13 flows down from the solvent recovery pipe 10 to the recovery container 3. Collected together with the solvent 5 in the container 3.

FIG. 9 shows a fifth embodiment of the present invention, which is a vacuum pump 1 having a single pump head.
Instead of 1, a vacuum pump 15 having two pump heads 16, 17 is provided. Then, solvent supply pipes 1a, 1b are connected to the pump heads 16, 17, and these supply pipes 1a, 1b are connected to different solvent vapor generation sources.
One end of 19 is connected, the other end is connected to the lower end of the solvent recovery pipes 2, 10, and the upper end of the solvent recovery pipes 2, 10 projects above the condenser 7 and opens to the atmosphere.

Next, at the time of solvent recovery, the vacuum pump 15 is driven to suck different solvent vapors from different solvent vapor generation sources, and sends them to the solvent recovery pipes 2 and 10 via conduits 18 and 19, which are fed into each spiral. The liquid is led to the pipes 2a and 10a to be cooled and liquefied, and different solvents 20 and 21 are collected in the respective collection containers 12 and 3. After the solvent recovery, clean air is discharged from the upper ends of the solvent recovery tubes 2 and 10 to the atmosphere. As described above, this embodiment uses a single vacuum pump 15 to separate solvent vapors from different solvent vapor sources into separate recovery containers 3,
21 to be collected

[0041]

As described above, according to the first aspect of the present invention, a plurality of solvent recovery tubes capable of introducing a solvent vapor are provided, and the solvent vapors can be sequentially moved by connecting the solvent recovery tubes.
Since a part of each solvent recovery pipe is piped inside a single condenser and a recovery vessel can be installed in each solvent recovery pipe, the solvent can be rationally recovered by a single condenser, and While reducing the number of capacitors,
The piping structure can be simplified, the structure can be simplified, the size and weight can be reduced, and the installation space can be made compact and inexpensive. According to the invention of claim 2, since each of the solvent recovery pipes is piped vertically or obliquely, and the recovery container is installed at the lower end of these solvent recovery pipes,
In addition to reducing the width of this type of apparatus and reducing the installation space, the free fall of the solvent can be promoted, and the solvent can be easily collected. According to the third aspect of the present invention, since the recovery container is detachably connected to all or a part of each of the solvent recovery tubes, the configuration and production of the recovery container or the solvent recovery tube can be facilitated, and the collection container can be attached and detached. Can be easily performed.

According to a fourth aspect of the present invention, a solvent vapor supply pipe connected to a solvent vapor generation source is connected to the one solvent recovery pipe, and a vacuum pump is inserted downstream of one of the solvent recovery pipes. The low-density solvent vapor after the liquefaction of the solvent vapor is guided to a vacuum pump to prevent condensation in the pump, thereby improving the life of the vacuum pump. In addition, since a buffer effect can be obtained in the collection container arranged on the suction side of the vacuum pump, the operation of recovering the solvent can be stabilized, and a dedicated buffer can be omitted and the configuration can be simplified accordingly. According to a fifth aspect of the present invention, the respective collection containers can be communicated with each other via a switching valve, and each collection container has the same pressure (atmospheric pressure).
Thus, it is possible to facilitate the recovery of the solvent in the recovery container and to eliminate the complexity of the recovery operation. According to the invention of claim 6, since the communication of each collection container is cut off via the switching valve,
The solvent recovered by each solvent recovery pipe can be accommodated in each recovery container, the amount of solvent recovered in each container can be reduced, and the trouble of frequently attaching and detaching the recovery container with a small number of containers can be eliminated.

According to a seventh aspect of the present invention, all or a part of each recovery container is communicated via a switching valve so that all or a part of the solvent can be accommodated in one or a plurality of recovery containers. Solvent can be rationally recovered, and this kind of recovery operation can be performed easily and promptly. In the invention of claim 8, since the switching valve is a two-way valve or a three-way valve, the solvent recovery can be rationalized. According to a ninth aspect of the present invention, a three-way valve is used as the switching valve, and communication of all or a part of the recovery container is interrupted through the three-way valve, or the recovery container and the solvent recovery pipe inserted through the three-way valve are interposed. Since the communication with the liquid supply is shut off, the recovery container can be separated from the solvent recovery operation system by a simple operation of the three-way valve, and for example, the recovery container can be attached and detached during the solvent recovery operation. Claim 1
In the invention of No. 0, since the switching valve is made operable during the solvent recovery operation, the recovery valve can be removed by operating the switching valve while continuing the solvent recovery operation, and the internal solvent can be treated, and the solvent recovery can be performed. Productivity can be improved. According to the eleventh aspect of the present invention, since each of the collecting containers is arranged in the vertical position, the width of the apparatus can be reduced and the installation space can be made compact.

According to a twelfth aspect of the present invention, a plurality of solvent recovery pipes capable of introducing different kinds of solvent vapors are provided, a part of the plurality of solvent recovery pipes is piped inside a single condenser, and each solvent recovery pipe is provided. Since the collection container is detachably connected to the pipe, different solvents can be rationally recovered with a single condenser, the number of condensers is reduced, the piping structure is simplified, and the configuration is simplified. It is possible to reduce the size and weight, and to make the installation space compact and inexpensive.
There is an effect suitable for a desk-mounted type. The invention of claim 13 is
Each of the solvent recovery pipes is piped vertically or obliquely, and the upper ends of these solvent recovery pipes are open to the atmosphere, and the recovery containers are installed at the lower ends thereof. , The free fall of each solvent can be promoted, the solvent can be easily collected, and clean air can be discharged to the atmosphere.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention, and shows a situation during a solvent recovery operation.

FIG. 2 is an explanatory diagram showing a second embodiment of the present invention, showing a situation during a solvent recovery operation.

FIG. 3 is an explanatory diagram showing a second embodiment of the present invention, and shows a state of solvent recovery after a solvent recovery operation.

FIG. 4 is an explanatory view showing a third embodiment of the present invention, showing a situation during a solvent recovery operation.

FIG. 5 is an explanatory diagram showing the operation of the third embodiment of the present invention, and shows the state of solvent recovery after a solvent recovery operation.

FIG. 6 is an explanatory diagram showing an operation of the third embodiment of the present invention, and shows a state immediately before a recovery container is removed during a solvent recovery operation.

FIG. 7 is an explanatory view showing a fourth embodiment of the present invention, and shows a situation during a solvent recovery operation.

FIG. 8 is an explanatory diagram showing the operation of the fourth embodiment of the present invention, and shows the state of solvent recovery after the solvent recovery operation.

FIG. 9 is an explanatory view showing a fifth embodiment of the present invention, and shows a situation during a solvent recovery operation.

[Explanation of symbols]

 2,10 Solvent recovery pipe 3,12 Recovery vessel 5,13,20,21 Solvent 14 Switching valve (two-way valve, three-way valve)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D076 AA12 AA22 BB13 BC03 BC25 BC27 CB06 CB12 CD22 CD23 EA47 FA31 HA03 HA14 JA01 JA03

Claims (13)

[Claims] 1. A solvent recovery apparatus in which a solvent vapor is introduced into a condenser to be cooled and liquefied, and the liquefied solvent can be recovered in a recovery container. And the solvent vapor can be sequentially moved, and a part of each solvent recovery pipe is piped inside a single condenser, and a recovery container can be installed in each solvent recovery pipe. Solvent recovery device. 2. The solvent recovery apparatus according to claim 1, wherein each of the solvent recovery pipes is vertically or obliquely piped, and the recovery container is provided at a lower end of each of the solvent recovery pipes. 3. The solvent recovery apparatus according to claim 1, wherein the recovery container is detachably connected to all or a part of each of the solvent recovery pipes. 4. A solvent vapor supply pipe connected to a solvent vapor generation source is connected to the one solvent recovery pipe, and a vacuum pump is inserted downstream of any one of the solvent recovery pipes.
Or the solvent recovery device according to claim 3. 5. The solvent recovery device according to claim 1, wherein each of the recovery containers can be communicated via a switching valve. 6. The solvent recovery device according to claim 5, wherein the communication between the recovery containers is interrupted via the switching valve, and the solvent recovered by each solvent recovery pipe can be stored in each recovery container. 7. The solvent recovery apparatus according to claim 5, wherein all or a part of each recovery container is communicated via a switching valve, and all or a part of the solvent can be accommodated in one or a plurality of recovery containers. 8. The solvent recovery device according to claim 5, wherein the switching valve is a two-way valve or a three-way valve. 9. A three-way valve is used as the switching valve, and the communication of all or a part of the recovery container is cut off through the three-way valve, or the connection between the recovery container inserted through the three-way valve and the solvent recovery pipe is performed. The solvent recovery device according to claim 5, wherein the communication is interrupted. 10. The solvent recovery device according to claim 5, wherein the switching valve is operable during a solvent recovery operation. 11. The solvent recovery device according to claim 5, wherein each of the recovery containers is arranged at a vertical position. 12. A solvent recovery apparatus in which a solvent vapor is introduced into a condenser to be cooled and liquefied and the recovered solvent can be accommodated in a recovery container, wherein a plurality of solvent recovery pipes capable of introducing different types of solvent vapor are provided. A part of the solvent recovery pipe is piped inside a single condenser, and a recovery container is detachably connected to each solvent recovery pipe. 13. The method according to claim 1, wherein each of the solvent recovery pipes is vertically or obliquely piped, an upper end of each of the solvent recovery pipes is opened to the atmosphere, and the recovery container is installed at a lower end thereof.
3. The solvent recovery device according to 2.