JPH0780511B2 - Solution transfer tool between closed containers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for easily transferring a solution in a closed container having a rubber stopper or the like into another closed container without removing the stopper.
The present invention relates to a solution transfer tool between closed containers in which a needle-like tube for liquid transfer and a needle tube for gas suction are incorporated in a tubular body having a partition wall in the middle. This solution transfer tool is useful for transferring various solutions in the field of handling radioactive substances, deleterious substances, poisons, dangerous substances, etc., or foods and medicines.

[0002]

2. Description of the Related Art The transfer of a radioactive solution will be described below as an example for the sake of clarity, but it goes without saying that the present invention is not limited to this and can be applied to transfer of any solution.
At a spent nuclear fuel reprocessing plant, it is necessary to reliably store various analytical samples for a certain period of time. The sample container is usually made of synthetic resin or the like, and is sealed with a rubber stopper to prevent evaporation of the solution and invasion of contaminants and the like, and prevent the composition of the solution from changing during the storage period.

However, depending on the type of solution, during storage for a long period of time, the sample container is deteriorated and damaged by radiation from the inside or outside, and the solution leaks out.
Therefore, it is necessary to periodically transfer the container to another new container. There are also cases where it is desired to redistribute the stock solution for purposes such as another analysis. In these cases, in the conventional technique, the rubber stopper of the sample container is removed, the internal solution is transferred to another new sample container, and a new rubber stopper is attached to the sample container.

[0004]

However, particularly in the field of nuclear power, since a radioactive solution is handled, remote operation by a manipulator is required, and the conventional solution transfer technique has a drawback that workability is extremely poor. Further, even when operating in a glove box without using a manipulator, the drawback of poor operability could not be resolved. Furthermore, in any case, since the rubber stopper is once removed, there is a risk that contaminants may enter at that time, and in particular when operating with a manipulator, it is difficult to avoid entering contaminants, which changes the composition of the sample solution. There was also a problem.

The object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to transfer a solution between containers in a sealed state without removing the stopper, so that the intrusion of contaminants into the solution in the container or the solution It is an object of the present invention to provide a tool for transferring a solution between closed containers, which can surely prevent the evaporation and the like and can be easily and surely operated by an unskilled person.

[0006]

According to the present invention, a tubular body into which a part of a closed container can be fitted from both ends, a partition wall located in the middle of the inside of the tubular body, and both recesses formed by them. A liquid transfer needle tube having both ends projecting inside and an intermediate part penetrating the partition wall, and a gas suction port having one end projecting into one recess and communicating with the outer peripheral part of the tubular body. A device for transferring a solution between closed containers provided with a needle tube. Here, it is preferable that the liquid transfer needle tube penetrates the partition wall in a slanting direction and penetrates, and the portions protruding into both the recesses are parallel to the central axis of the cylindrical body. Further, it is preferable that the gas inlet opening at the outer peripheral portion of the tubular body is located at the bottom of the counterbore formed on the outer peripheral surface of the tubular body.

[0007]

When one of the recesses of the solution transfer tool is pushed into the closed container containing the solution to be transferred and pushed in, the
The needle tube of the book penetrates, and the inside of the closed container is brought into communication with the outside by the needle tube for gas suction. The inside of the new sealed container of the other party is depressurized (vacuum) in advance. When the other closed part of the solution transfer tool is pushed into the new closed container and pushed in, the liquid transfer needle tube penetrates, thereby communicating between the closed containers. Due to the pressure difference between the external pressure and the pressure in the new closed container, the solution in the upper closed container is transferred into the lower closed container through the liquid transfer needle tube. In this way, it is possible to transfer the solution inside without removing the stoppers of both closed containers.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a partially cutaway perspective view of a solution transfer tool between closed containers according to the present invention, and FIG. 2 is a longitudinal sectional view thereof. The solution transfer tool 10 includes a cylindrical body 12 and the cylindrical body 12
It has a disk-shaped partition wall 14 provided in the center of the inside, a liquid transfer needle tube 18 penetrating the partition wall 14, and a gas suction needle tube 20 communicating with the outer peripheral portion of the cylindrical body. The cylindrical body 12 and the partition wall 14 form recesses 16a and 16b on both sides into which a part of the closed container can be fitted. The diameters of the recesses 16a and 16b correspond to the outer diameter of the closed container, and the inner wall surface of the cylindrical body 12 serves as a guide when the closed container is fitted. The liquid transfer needle tube 18 is held by the partition wall 14, and both ends of the liquid transfer needle tube 18 project into the recesses 16a and 16b. The gas suction needle tube 20 is also held by the partition wall 14, and one end thereof projects into the one recess 16a. Both recesses 16
Both needle tubes 18 and 20 in a and 16b are perpendicular to the partition wall 14 (parallel to the central axis of the cylindrical body 12).

Both needle tubes 18 and 20 are, for example, thin tubes made of stainless steel having a diameter of about 1 mm, and their tips are made slanted to be sharpened so that the rubber stopper of the closed container can be easily penetrated. Further, the cylindrical body 12 and the partition wall 14 are made of a transparent resin such as acrylic resin so that the fitted state of the closed container can be visually inspected from the outer peripheral side. The partition wall 14 also functions as a stopper when the closed container is fitted.

The portion where the liquid transfer needle tube 18 from the one recess 16a to the other recess 16b penetrates the partition wall 14 is obliquely penetrated and fixed to the partition wall 14, and the liquid transfer needle tube is fixed. The central axes at both ends of 18 are parallel to each other but slightly offset. Thus, when the liquid transfer needle tube 18 penetrates the rubber stopper of the closed container, even if a force is applied in the axial direction, the liquid transfer needle tube 18 is firmly held at the location of the partition wall 14 and can be prevented from slipping out. Further, one end of the gas suction needle tube 20 is opened at the outer peripheral portion of the cylindrical body 12, and the gas inlet is opened at the bottom portion of the counterbore hole 22 formed on the outer peripheral surface of the cylindrical body 12.

FIG. 3 shows a state in use. Both closed containers 3
0 and 32 are made of synthetic resin, and a rubber plug 34 (for example, a plug made of thin neoprene rubber having a thickness of 1 mm or less) is closely attached to the opening. The closed container 30 containing the solution is fitted into one of the recesses 16a of the solution transfer tool 10, and the two needle tubes 18 and 20 are inserted. The inside of the new airtight container 32 of the other party is beforehand made into a vacuum state. It is fitted in the other recess 16b and the liquid transfer needle tube 18 is inserted. The cylindrical body 12 functions as a guide when inserting the closed containers 30 and 32. Therefore, the closed containers 30, 3
The 2 is easily and accurately positioned. Needle tube 1
Since 8 and 20 are thin, and the stoppers of the sealed containers 30 and 32 are thin neoprene rubber, when the needle tubes 18 and 20 are pulled out, the rubber returns to its original state and the sealed state is maintained.

In the present invention, since the tips of both needle tubes 18 and 20 are located inside the end surface of the cylindrical body 12, even if the solution transfer tool 10 is directly placed on the floor or the like, the needle tubes 18 and 20 will be It will not be contaminated. When the solution transfer tool 10 is handled by the grip portion 36 of the manipulator, as shown by the phantom line, the gas suction port is positioned so as to be slightly recessed from the outer peripheral surface. Therefore, the grip portion 36 should be in direct contact with the gas suction port. Therefore, it is possible to prevent contaminants and foreign matter attached to the grip portion 36 from entering the closed container 30 through the gas suction port.

In the present invention, the amount of liquid to be transferred can be controlled by changing the protruding length of the liquid transfer needle tube 18 fitted into the recess 16a. When the protrusion length is increased, a small amount is transferred, which is advantageous for quantitative distribution. By making the protrusion length as short as possible, almost the entire amount can be transferred.

FIG. 4 is a process explanatory diagram showing a method of using the solution transfer tool of the present invention. First, as shown in FIG. 4A, the closed container 30 containing the solution 31 to be transferred is erected and covered with the solution transfer tool 10. Solution transfer tool 10
The cylindrical body 12 serves as a guide, and the upper portion of the hermetically sealed container 30 is fitted into one of the concave portions (a concave portion on which the two needle tubes project) 16a. Then 2 on the rubber stopper 34
The needle tubes 18 and 20 of the book easily and accurately penetrate (see FIG. 4B), and are brought into a state of being communicated with the outside by the gas suction needle tube 20. Next, as shown in FIG. 4C, the inside of the new airtight container 32 of the other party is previously evacuated (depressurized). The upright closed container 32 is covered with the solution transfer tool 10. The upper part of the closed container 32 is fitted into the other recess 16b. The other end of the liquid transfer needle tube 18 passes through the rubber stopper, and both closed containers 30, 32
The rooms communicate with each other. As shown in FIG. 4D, the solution transfer tool 1
Air 38 enters into the closed container 30 through the gas suction needle tube 20 from the gas suction port opened on the outer side surface of 0. The solution 31 in the closed container 30 is transferred to the closed container 32 due to the difference between the pressure of the air in the closed container 30 and the pressure in the closed container 32. The transferred solution is indicated by reference numeral 33. That is, the solution inside can be transferred without removing the rubber plugs 34 of both the closed containers 30 and 32. Then, if the solution transfer tool 10 is removed from the closed container 32,
The solution transfer operation is completed. As described above, since the needle tube is thin and the rubber stopper is thin and highly elastic, the needle hole returns to its original position and is closed when the needle tube is pulled out, so that the sealed state is maintained.

It is preferable that the tubular body and the partition wall are integrated by resin molding and the needle tube is also incorporated at the time of molding, but they may be separately manufactured and assembled with an adhesive or the like. The liquid transfer needle tube may have a straight shape, but in that case, it is desirable to make a work to prevent the deviation. The gas suction needle tube does not have to reach the outer surface of the tubular body. It is also possible to form a hole in the partition wall and use it as a gas suction passage and connect it to a gas suction needle tube. The shapes of the tubular body and the recess formed by the tubular body may be appropriately changed according to the shape of the closed container. For example, if the closed container is in the shape of a square bottle, the tubular body is also in the shape of a square tube.

[0016]

As described above, the present invention is a solution transfer tool between closed containers in which a needle-like tube for liquid transfer and a needle tube for gas suction are provided in a tubular body having a partition wall formed in the middle thereof. There is no need to remove the stopper of the container during the transfer, so there is no risk that the solution inside will be contaminated with other substances. Further, since the work of removing and installing the stopper is unnecessary, workability is good and work time can be shortened. In the present invention, since the setting is completed only by covering the closed container with the tubular body of the solution transfer tool as a guide, the work can be performed even by remote operation by a manipulator or the like regardless of the skill of the engineer.

If the liquid transfer needle tube is obliquely inserted with respect to the partition wall, there is no risk of slipping or falling out when inserting the needle tube into the closed container. Further, since the needle tube is inside the recess (inside the end surface of the tubular body), even if the solution transfer tool is placed on the floor surface, the tip of the needle tube does not come into contact with the floor or the like, and contamination can be avoided. Furthermore, by changing the length of the liquid transfer needle tube (insertion length into the solution to be transferred), the transfer amount can be controlled, and both transfer and distribution can be performed.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a solution transfer tool between sealed containers according to the present invention.

FIG. 2 is a vertical sectional view thereof.

FIG. 3 is an explanatory view of the usage state.

FIG. 4 is a process explanatory view showing a method of using the same.

[Explanation of symbols]

 10 Solution Transfer Tool 12 Cylindrical Body 14 Partition Walls 16a, 16b Recess 18 Liquid Transfer Needle Tube 20 Gas Inhalation Needle Tube 30, 32 Sealed Container 34 Rubber Plug

Claims (3)

[Claims] 1. A tubular body into which a part of a closed container can be fitted from both ends, a partition wall located in the middle of the inside of the tubular body, and both ends projecting into both recesses formed by them and an intermediate portion A liquid transfer needle tube that is held through the partition wall, and a gas suction needle tube that is held so that one end projects into one of the recesses and that communicates with the outer peripheral portion of the tubular body. A solution transfer tool between closed containers. 2. The liquid transfer needle tube penetrates the partition wall in an inclined direction, and the portions projecting into the both recesses are parallel to the central axis of the cylindrical body. Solution transfer tool. 3. The solution transfer tool according to claim 1, wherein the gas inlet opening at the outer peripheral portion of the tubular body is located at the bottom of the counterbore formed on the outer peripheral surface of the tubular body.