JP2003004603A - Sample subdividing fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sample subdividing fixture simplifying work for transferring a sample from one housing container to other housing container in a non- contact state with the open air and capable of subdividing the sample by a necessary amount. SOLUTION: The first housing container 1 and the second housing container 2 are connected by the conduit 5 fixed to the lids 3 and 4 of the respective containers and the sample is transferred from the first housing container 1 to the second housing container 2 through the conduit 5 by inclining the first housing container 1. When the first housing container 1 is returned to the original angle after a constant amount of the sample is transferred, the check valve 6 provided to the leading end of the conduit 5 closes the leading end opening part of the conduit 5 to prevent the back flow of the sample to the first housing container 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sample dispensing jig, and more specifically, to a jig for storing a sample in a first container when transferring the sample from the first container to the second container. The present invention relates to a sample dividing jig capable of moving a powder or granular sample to a container for a predetermined amount in a state of not contacting with the outside air and preventing backflow of the moved sample.

[0002]

2. Description of the Related Art Several containers for powder or granular substances have been proposed so far. For example, according to Japanese Patent Application Laid-Open No. 7-257619, a granular material such as sugar is supplied from a storage container in a fixed amount in a small amount, which is held in the storage container in a vertical direction by a flexible film body. There is described a subdivision device having a movable nozzle and a subdivision cup installed under the nozzle. By selectively moving the nozzle position up and down, continuous supply and subdivision supply of a granular substance are described. A container capable of performing is disclosed.

As a device for dividing a fixed amount of sample into a small amount from a powder, for example, Japanese Patent Laid-Open No. 20638/1982 discloses a cylinder provided with an opening having the same width when sampling a sample from the powder. A device for sampling a sample without bias in distribution is disclosed. Further, Japanese Patent Application Laid-Open No. 61-269022 discloses a device for pushing the powder filled in a cylindrical container into a weighing container by using a piston.

[0004]

However, the conventional jig for subdividing the powder sample is capable of subdividing a fixed amount of sample, but since the capacity for subdividing is determined in advance, any jig can be used. Step-by-step work was required to collect the amount of sample. In addition, there was no one that could divide the sample into non-contact with the outside air.

Therefore, when it is necessary to subdivide a hygroscopic or oxygen-sensitive sample or the like into the open air without contact,
Although work is being performed using a spatula in a glove box under a nitrogen atmosphere, the amount of sample that can be transferred at one time is small in the transfer work using a spatula, so it is necessary to transfer the target amount of sample. , Many times, sometimes dozens of times transfer work was required. Further, when the sample transfer work is performed in the glove box, there is a problem that the work efficiency is lowered, such as the sample being spilled during the work.

The present invention has been made to solve the above-mentioned drawbacks, and simplifies the work of transferring a sample from one storage container to the other storage container in a non-contact state with the outside air,
Moreover, it is an object of the present invention to provide a jig for dividing a sample, which can divide a sample into a required amount.

[0007]

In order to achieve the above object, the present inventor eliminates the stepwise operation at the time of transferring a powder or granular sample and brings a predetermined amount of sample into contact with the outside air. We have conducted diligent research on a jig for sample subdivision that can be subdivided without needing to improve the airtightness of the storage container, and connect the storage container and the transfer container with a conduit through which the sample can flow. It was found that a check valve can be provided in the opening of the above-mentioned container, so that a predetermined amount of sample can be subdivided, and the present invention has been completed.

That is, the present invention is a jig used when transferring a sample from a first storage container to a second storage container without contacting with the outside air. The jig is used for each of the first and second storage containers. A lid that is mounted and has a through hole in the center, a conduit that is inserted / fixed in each through hole of the lid to circulate a sample, and a tip that is inserted into the second storage container And a check valve for preventing the sample from flowing back into the first storage container. A jig for sample subdivision (claim 1) and a check valve fixed in a conduit. And a shaft fixture having a shape in which the sample can flow, a shaft having one end fixed by the shaft fixture and the other end protruding into the second storage container, and the shaft sliding as a guide, A closing plate that closes the tip opening of the Of provided at the other end, to claim 1 sample dispensing jig, wherein it has a stop member for preventing Chi 抜落 from the shaft of the closure plate (claim 2).

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A sample dispensing jig of the present invention is a jig used when transferring a sample from a first container to a second container without contacting with outside air. A lid that is attached to each of the first and second storage containers, has a through hole in the center, a conduit that is inserted and fixed in each of the through holes of the lid and that allows a sample to flow, and a second storage container in the second storage container. Attached to the tip of the inserted conduit,
The sample is not particularly limited as long as it is provided with a check valve for preventing backflow into the first storage container, and the sample is preferably a powder or granular sample. can do.

The check valve is not particularly limited as long as it is a known check valve having a valve structure capable of closing the opening of a hollow conduit, and is not particularly limited, and a hinge type lid structure and a hinge spring type lid structure are provided. Although a check valve having a sliding lid structure or the like can be exemplified, a check valve having a sliding lid structure which is not affected by the operating position, has a simple mechanism, and has few failures is preferable. The non-return valve having such a slide-type lid structure includes a shaft fixing tool which is fixed in a conduit and through which a sample can flow, and one end of which is fixed by the shaft fixing tool and the other end of which is inserted into the second storage container. From a protruding shaft, a closing plate that slides using the shaft as a guide to close the front end opening of the conduit, and a stop member that is provided at the other end of the shaft and that prevents the closing plate from falling off the shaft. A specific example of the configured check valve can be given.In the case of a check valve having such a structure, the closing plate of the check valve always slides smoothly using the shaft as a guide no matter which direction the container is tilted. Thus, the conduit opening can be quickly closed.

According to the sample dispensing jig of the present invention, when transferring a powder or granular sample, it is possible to move the sample from the first container to the first container without complicated stepwise work in the glove box. The sample can be easily transferred to the second storage container, and by providing the check valve, the transferred sample does not flow back from the second storage container to the first storage container. Further, the sample subdivision jig of the present invention maintains good airtightness in a set state, and even when the sample is hygroscopic or oxygen-sensitive, such a sample can be simply and without contact with the outside air. Can be transferred.

A preferred embodiment of the sample dispensing jig of the present invention will be described below with reference to the drawings. Note that FIG.
Is an exploded perspective view of the sample dispensing jig and storage container of the present invention,
2 is a partial cross-sectional view of a sample dispensing jig of the present invention, FIG. 3 is a perspective view of a backflow prevention unit, FIG. 4 is a perspective view showing a mounted state of the sample dispensing jig of the present invention, and FIG. 5 is a book. It is a perspective view which shows the use condition of the sample dividing jig of this invention.

As shown in FIG. 1, the sample dispensing jig of the present invention comprises a lid 3 of a first storage container 1 and a second storage container 2.
A lid 4 and a conduit 5 which is inserted and fixed in through holes provided in the lid 3 of the first container and the lid 4 of the second container,
It is composed of a check valve 6 that operates as a check valve that closes the opening of the conduit 5. The first storage container 1 is a container in which a sample to be subdivided is stored, and does not need to be specially prepared, and may be a standard drug container or the like that is normally used. The second storage container 2 is a container for storing the subdivided sample and is not particularly limited in shape and material, but in view of the convenience of the subdivision work, a glass or transparent plastic container is preferable, It is more preferable that the side surface of the main body has a volume scale. Further, as the first storage container and the second storage container, those having arbitrary sizes can be appropriately combined and used, for example, the first storage container 1 having a capacity of 500 ml and the second storage container having a capacity of 50 ml. The combination with the storage container 2 can be appropriately selected.

The lid 3 of the first storage container and the lid 4 of the second storage container have a through hole 3 for inserting and fixing the conduit 5 in the center thereof.
a and 4a are provided, and are configured to form a closed space when the first storage container and the second storage container are communicated with each other via the conduit 5 via the lid 3 and the lid 4. There is. Further, the conduit 5 that is tightly inserted and fixed in the through holes 3a and 4a is provided with the sample 5 from the first container 2 to the second container 2
A notch 5a is provided at the open end of the conduit 5 to be inserted into the first container 1 so that the sample can be easily introduced into the conduit 5. The material of the conduit 5 is not particularly limited as long as it has a proper strength and can withstand repeated use, but a material having corrosion resistance is preferable, and a stainless pipe, Teflon (registered trademark) tube, etc. are preferably exemplified. You can In particular, when the sample has an electrostatic property, a metal tube such as stainless steel is preferable. The thickness of the conduit 5 is not particularly limited, but for example, if the outer diameter is 12 mm and the inner diameter is about 10 mm, the size of the storage container can be widely selected, and the sample transfer can be efficiently performed. Therefore, it is preferable. Normally, the conduit 5 having a uniform thickness is used, but the conduit 5 may be thinner toward the second storage container side. Further, the length of the conduit 5 can be arbitrarily selected.

The check valve 6 constituting the check valve is
As shown in FIG. 2, the tip opening 5b of the conduit 5 is provided to prevent the backflow of the sample from the second storage container 2 to the first storage container 1 and is inserted into the second storage container 2. A shaft fixture 6a which is fitted and fixed in the vicinity and has a shape through which a sample can flow; a shaft 6b whose one end 61b is fixed by this shaft fixture 6a and whose other end 62b projects into the second storage container 2; Sliding using the shaft 6b as a guide,
The closing plate 6c that closes the tip opening of the conduit 5 and the other end 62b of the shaft 6b are fitted to each other.
It is composed of a stopper member 6d which prevents the stopper member 6d from falling out.

Fixture 6 for such a backflow prevention unit 6
As shown in FIG. 3, a has several contact members 61a extended from the central axis in the radial direction.
The tip of 1a contacts the inner wall of the conduit 5. The number of the abutting members 61a is not particularly limited as long as it securely fixes the check valve 6 to the conduit 5 and does not hinder the flow of the sample, but three at every 120 degrees from the central axis. It is preferable that the contact member 61a is provided.
The shape of the tip of the contact member 61a is not particularly limited as long as it reliably fixes the check valve 6 to the conduit 5.

The shaft 6b is fixed to the fixture 6a,
The closing plate 6c is slidably held. As the material of the shaft 6b, a superelastic alloy or the like is preferably used from the viewpoint of durability and corrosion resistance. The thickness of the shaft 6b is appropriately selected in consideration of the thickness of the conduit 5 and the like, and the inner diameter of the conduit 5 is 1
In the case of 0 mm, the outer diameter of the shaft 6b is preferably about 0.4 mm. The length of the shaft 6b is not particularly limited.

As the closing plate 6c, a disk having a hole 61c into which the shaft 6b is loosely inserted and having a diameter larger than the inner diameter of the conduit 5 can be preferably exemplified. The diameter of the hole 61c is slightly larger than that of the shaft 6b, and the closing plate 6c can slide smoothly using the shaft 6b as a guide, but the sample does not substantially flow backward through the gap between the hole 61c and the shaft 6b. For example, when the inner diameter of the conduit 5 is 10 mm, the outer diameter of the closing plate 6c is 11 mm.
The thickness is preferably about mm and the thickness is preferably about 3 mm. As a material of the closing plate 6c, a Teflon plate can be suitably selected due to its durability and chemical resistance. The stopper member 6d is fixed to the end of the shaft 6 on the side opposite to the fixture side to prevent the closing plate 6c from falling off. The material thereof is not particularly limited, but a PEEK tube or the like may be used. It can be suitably selected.

The operation of the jig for dividing a sample according to the present invention having such a structure will be described. First, in the glove box, the sealing lids (not shown) originally provided in the first storage container 1 and the second storage container 2 are removed, and as shown in FIG. Connect the storage container. That is, insert the conduit 5 provided with the notch 5a.
The fixed lid 3 is attached to the first storage container 1, and then the second storage container 2 is attached to the lid 4 into which the conduit 5 having the check valve 6 is inserted and fixed. At this time, the check valve 6
The closing plate 6c is located on the front end opening 5b of the conduit 5 and is closed.

Then, when the first container 1 is tilted, the sample P flows into the conduit 5 through the notch 5a. Further, when the first storage container 1 is tilted and rotated as shown in FIG. 5 until the second storage container 2 is arranged below and the first storage container 1 is arranged above, the check valve 6 is released. The closing plate 6c is the stopper member 6
After moving to a position limited by d, the tip opening 5b of the conduit 5 on the second storage container 2 side is opened, and the sample P
Are transferred to the second storage container 2 through the conduit 5.
The sample transfer operation may be performed only by tilting the first storage container 1, or the sample may be completely inverted.

After transferring a predetermined amount of the sample P to the second storage container 2, the state shown in FIG. 4 is returned so that the first storage container 1 is on the lower side. At this time, the closing plate 6c of the check valve 6 slides using the shaft 6b as a guide, and the tip opening 5b of the conduit 5 is opened.
It moves to the top and closes the opening 5b. For this reason,
The sample subdivided into the second storage container 2 does not flow back into the first storage container 1. In this state, the lid 3 of the first storage container 1 is removed from the first storage container 1, and then
After the second storage container 2 is rotated to the bottom, the lid 4 having the conduit 5 inserted and fixed therein is removed from the second storage container 2. Finally, the lids provided in the main body are attached to the respective storage containers, and the transfer operation is completed. Since the sample can be transferred in a non-contact state with the outside air during the transfer operation, only the attachment / detachment of the lid 3 and the lid 4 to / from the first storage container 1 and the second storage container 2 can be performed in the glove box. If done, the transfer operation need not be performed in the glove box.

[0022]

As is apparent from the above description, according to the sample dispensing jig of the present invention, since the conduit for taking out the sample and the check valve for the sample are provided at one end of the conduit, Alternatively, when subdividing the sample of the granular material, the sample can be easily subdivided from the first container to the second container without complicated steps in the glove box. There is no backflow from the second storage container to the first storage container. Further, the sample subdivision jig of the present invention maintains good airtightness in a set state, and even when the sample is hygroscopic or oxygen-sensitive, such a sample can be simply and without contact with the outside air. Can be transferred.

In particular, a check valve is fixed in the conduit, and a shaft fixture having a shape through which the sample can flow, and one end fixed by the shaft fixture and the other end protruding into the second container. Slide with the shaft using the shaft as a guide,
When the container is configured as a backflow prevention unit that includes a closing plate that closes the distal end opening of the conduit and a stopper member that is provided at the other end of the shaft and that prevents the closing plate from falling off the shaft, the direction of the container Even when the valve is tilted to, the check valve closing plate always slides smoothly using the shaft as a guide, and the conduit opening can be closed quickly, so that the sample dividing work can be performed efficiently.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a sample dispensing jig and a storage container according to the present invention.

FIG. 2 is a partial sectional view of a jig for dividing a sample according to the present invention.

FIG. 3 is a perspective view of a check valve (backflow prevention unit) of the present invention.

FIG. 4 is a perspective view showing a mounted state of the sample dividing jig of the present invention.

FIG. 5 is a perspective view showing a usage state of the sample dispensing jig of the present invention.

[Explanation of symbols]

1 ... First storage container 2 …… Second storage container 3 ... the lid of the first storage container 4 ... Second storage container lid 5: conduit 5a ... Notch 5b ... Tip opening 6 Check valve (backflow prevention unit) 6a ... Shaft fixing tool 61a ... Abutting member 6b ... Shaft 6c ... Blocking plate 6d ... stop member

Claims (2)

[Claims] 1. A jig used when transferring a sample from a first storage container to a second storage container without contacting with outside air, the jig being mounted on each of the first and second storage containers, A lid having a through hole in the center, a conduit that is inserted / fixed in each through hole of the lid and that allows the sample to flow, and a tip that is attached to the tip of the conduit that is inserted into the second storage container. And a check valve for preventing reverse flow of the liquid into the first storage container. 2. A non-return valve is fixed in a conduit, a shaft fixture having a shape through which a sample can flow, and one end of which is fixed by the shaft fixture, and the other end projects into a second storage container. A shaft, a closing plate that slides using the shaft as a guide, and closes the tip end opening of the conduit, and a stop member that is provided at the other end of the shaft and that prevents the closing plate from falling off the shaft. The sample dividing jig according to claim 1.