JP3213788U - Gas sampling adapter - Google Patents

Abstract

Provided is a gas sampling adapter that opens a hole in a stopper of a liquid storage container such as a PET bottle while collecting the gas or liquid inside the liquid storage container with a needle or the like from the outside. A fixing part 10 having an insertion hole 11 and a mounting part to be attached to a stopper 41 of a liquid container 40, a pointed head 21 at one end, a seal member 30 at the other end, and an end And a pipe portion 20 to be inserted into the insertion hole. Further, a second seal portion 31 is further provided between the stopper of the liquid storage container and the ceiling portion 10a of the fixed portion, and seals between the periphery of the insertion hole and the stopper. [Selection] Figure 1

Description

  The present invention relates to a gas sampling adapter.

  For analysis of aroma components and odors of samples contained in liquid containers such as PET bottles, that is, drinking water, seasonings, cosmetics or pharmaceuticals, for example, as disclosed in Patent Document 1, the liquid container is opened, It was necessary to transfer the drinking water or the like as the contents to the sample bottle and analyze the gas accumulated in the head space of the sample bottle.

JP 2016-114456 A

  In the analysis method used conventionally, it is difficult to analyze the gas or liquid in the liquid container before opening without being affected by contamination or volatilization by the outside air. Another problem is that it takes time to transfer the contents to a sample bottle for analysis.

  According to one aspect of the present invention, the gas sampling adapter includes a ceiling portion having an insertion hole and a fixed portion having a cylindrical portion to be attached to the stopper of the liquid storage container, a pointed head formed at one end, and the other end Is provided with a first seal member, and the one end has a pipe portion inserted into the insertion hole.

    According to the gas sampling adapter of the present invention, a hole is formed in the stopper of the liquid storage container such as a PET bottle with a pipe portion, and a needle or the like is collected from the outside into the liquid storage container through the pipe portion. Since the gas or liquid inside can be collected by inserting the tool, the reliability and workability of gas analysis in the liquid container are improved.

The figure which shows one Embodiment of the gas sampling adapter of this invention. The figure which shows the modification of a fixing | fixed part. The figure which shows the modification of a pipe part.

(One embodiment of the gas sampling adapter of the present invention)
Hereinafter, the gas sampling adapter of the present invention will be described with reference to the drawings. FIG. 1 is a view showing an embodiment of the gas sampling adapter according to the present invention, and is a cross-sectional view showing a state where the gas sampling adapter 100 is attached to the stopper 41 of the liquid storage container 40.
The gas sampling adapter 100 includes a fixed portion 10 and a pipe portion 20. The fixed part 10 has a ceiling part 10a and a cylindrical part 10b, and has a bottomed cylindrical shape. The fixing unit 10 is attached to the liquid storage container 40 so that the cylindrical part 10b covers the stopper 41 of the liquid storage container 40 and the cylindrical part 10b wraps the stopper 41. The ceiling part 10a is a bottom plate of the cylindrical part 10b.
The pipe portion 20 has a sharp pointed head 21 at the lower end in the figure, and a first seal member 30 such as a septum made of an elastic material such as silicon rubber is provided at the upper end in the figure, which is the other end. It is installed.

The material of the pipe part 20 is preferably a material obtained by subjecting a metal such as stainless steel to an inert treatment from the viewpoint of strength and low outgas.
A second seal member 31 such as a seal plate made of an elastic material is disposed between the ceiling portion 10a of the fixed portion 10 and the stopper 41 of the liquid storage container 40. An insertion hole 11 for inserting the pipe part 20 is opened in the ceiling part 10a of the fixing part 10, the pipe part 20 passes through the insertion hole 11, and the pointed head 21 further has a second seal member 31. And one end of the stopper 41 is inserted into the space inside the liquid storage container 40.
The second seal member 31 is compressed between the ceiling 10 a and the upper surface of the plug 41 when the fixing unit 10 is attached to the plug 41. Therefore, the pipe portion 20 breaks through the second seal member 31 and the plug 41 and seals the space between the periphery of the insertion hole 11 of the ceiling portion 10 a and the plug 41 in a state of being stuck in the plug 41.

In this state, by inserting a needle (syringe, injection needle) 50 provided in a syringe (not shown) into the pipe portion 20 via the first seal member 30, liquid is stored via the needle 50. The gas or liquid in the container 40 can be collected in a syringe.
The gas or liquid collected in the syringe is analyzed with an analyzer such as a gas chromatograph mass spectrometer, so that the gas or liquid in the liquid storage container is analyzed in a state in which the volatilization to the outside air or the contamination by the outside air is reduced. be able to.
If the airtightness around the insertion hole 11 is maintained by making the size of the insertion hole 11 substantially equal to the diameter of the pipe portion 20, the second seal member 31 can be omitted.

The liquid storage container 40 described above is a so-called PET bottle or other resin, glass, or metal container. Moreover, it is preferable to use what was equipped with the stopper 41 which consists of a resin-made material which can be pierced by the pointed head 21 of the pipe part 20, for example.
In addition, about the shape of the stopper 41, there is what is standardized as the shape of the part of the liquid storage container 40 of the part which attaches the stopper 41 indirectly. For example, in the case of so-called PET bottles, standards related to various shapes (sizes and screw shapes) of the attachment portion of the stopper 41 are managed by International Society of Beverage Technologies, which is a private standard organization, and published at the following URL: ing.
https://www.bevtech.org/threadspecs-downloads.asp
Therefore, the shape of the fixing portion 10 attached to the stopper 41 can be appropriately designed according to each standard while referring to such a standard.

(Effect of one embodiment)
According to one embodiment of the present invention, the following effects can be obtained.
The gas sampling adapter 100 includes a ceiling portion 10a having an insertion hole 11, a fixed portion 10 having a cylindrical portion 10b attached to a stopper 41 of the liquid storage container 40, and a pointed head 21 formed at one end, and the other end. The first seal member 30 is attached to the pipe portion 20, and one end of the pipe member 20 is inserted into the insertion hole 11.
With this configuration, for example, the stopper 10 of the liquid storage container 40 such as a PET bottle is covered with the fixing portion 10, the pointed head 21 of the pipe part 20 is pierced into the upper surface of the stopper 41, and the pointed head 21 is placed inside the liquid storage container 40. To penetrate. An injection needle or the like is pierced into the first seal member 30, the injection needle is inserted into the pipe portion 20, and the tip thereof is guided into the liquid storage container 40. Through the pipe part 20 and the injection needle, the gas or liquid in the liquid storage container is not contaminated by outside air and can be collected easily. That is, a simple gas sampling adapter can be provided.

  Since the second sealing member 31 seals between the periphery of the insertion hole 11 of the ceiling portion 10a and the stopper 41, the liquid storage container is provided even when the airtightness between the pipe portion 20 and the stopper 41 is impaired. It is possible to prevent the outside air from being mixed into the inside 40 and volatilizing into the outside air. Thereby, it is possible to realize a gas sampling adapter that is less polluted by outside air and volatilized into the outside air.

(Modification 1 of gas sampling adapter)
FIG. 2 is a perspective view showing a modification of the gas sampling adapter. In the above embodiment, the fixing unit 10 is directly covered with the stopper 41 and the gas sampling adapter is attached to the liquid storage container 40. In the first modification, the fixing unit 10 is attached to the liquid storage container 40 via the mounting unit 12. FIG. 2 is an exploded view showing a state in which each component constituting the attachment structure for attaching the fixing portion 10 to the stopper 41 of the liquid storage container 40 is disassembled.
The gas sampling adapter according to this modification has the mounting portion 12 divided. This will be described with reference to FIG.

As shown in FIG. 2, the mounting portion 12 includes a pair of divided pieces 12A, and the divided pieces 12A are separable. The two divided pieces 12A are respectively attached to the plug 41 from the left and right in the figure, and constitute one cylindrical attachment portion 12 as a whole. The mounting portion 12 is mounted on the stopper 41 of the liquid storage container, the fixing portion 10 is mounted from above in the drawing so as to wrap around the outer periphery of the mounting portion 12, and the fixing portion 10 is mounted on the plug 41. At the lower end of the mounting portion 12 in the figure, a locking portion 12b for increasing the accuracy of mounting to the stopper 41 is provided. The locking portion 12b can be omitted.
Also in this modification, the fixing portion 10 may or may not include the second seal member 31. When the second seal member 31 is provided, the second seal member 31 seals between the periphery of the insertion hole 11 of the ceiling portion 10a and the plug 41, as in the above-described embodiment.

(Effect of modification 1 of gas sampling adapter)
The gas sampling adapter according to this modification further includes a mounting portion 12 including a pair of semi-cylindrical divided pieces 12 </ b> A that are mounted on the stopper 41 of the liquid storage container 40, and the fixing portion 10 is liquid via the mounting portion 12. It is attached to the stopper 41 of the storage container 40. Therefore, in addition to the effect of the above-described embodiment, there is an effect that the fixing portion 10 can be more reliably attached to the stopper 41 of the liquid storage container 40.

(Modification 2 of gas sampling adapter)
In the first modification, a male screw is formed on the peripheral surface of the mounting portion 12, and a female screw that is screwed with the male screw is formed on the inner surface of the cylindrical portion 10 b of the fixed portion 10. With this configuration, the fixing portion 10 can be screwed to the mounting portion 12, so that there is an effect that the fixing portion 10 can be more securely attached to the stopper 41 of the liquid storage container 40. Further, the second sealing member 31 is compressed between the stopper 41 of the liquid storage container 40 and the ceiling portion 10a, so that the sealing performance is improved.
In addition, when screwing the fixing | fixed part 10 in the mounting part 12, it is good to provide a non-rotatable structure so that the mounting part 12 may not be rotated with respect to the stopper 41. An operator can attach the fixing unit 10 to the liquid storage container 40 by grasping the main body of the liquid storage container 40 and screwing the fixing unit 10 to the mounting unit 12 while rotating the fixing unit 10. Thereby, the attachment property of a gas sampling adapter can be improved.

(Modification 1 of the pipe part)
FIG. 3 is a perspective view showing Modification 1 of the pipe portion, and is an exploded view showing a state in which each component described below is disassembled.
The pipe part 200 of this modification is provided with a seal member holding mechanism 300 at the end (upper end) of the pipe main body 20A, and holds the first seal member 32 replaced with the first seal member 30 shown in FIG. It is what you do.
The seal member holding mechanism 300 according to this modification is configured to include a holding portion 22 and a fitting portion 24. The holding part 22 has a substantially cylindrical shape, and is provided at the upper end of the pipe body 20A by adhesion or fusion. The holding portion 22 is provided with a vent hole 23 so as to communicate with the hollow hole of the pipe body 20A.

As an example, a first seal member 32 such as a septum made of an elastic material such as silicon rubber is disposed on the upper surface of the holding portion 22. And the fitting part 24 is fitted by the outer periphery so that the holding | maintenance part 22 may be wrapped from the upper direction in a figure. The fitting part 24 is formed with a hole 25 for communicating with the hollow hole of the pipe body 20A. The first seal member 32 seals between the fitting portion 24 around the hole 25 and the holding portion 22 around the vent hole 23 by being crimped between the fitting portion 24 and the holding portion 22. To do.
The needle for collecting gas or liquid from the inside of the liquid storage container 40 breaks through the first seal member 32 through the hole 25 and reaches the pipe body 20 </ b> A through the vent hole 23.

  In the above example, the fitting portion 24 wraps the holding portion 22 from the outside. However, the present invention is not limited to this, and the diameter of the holding portion is larger than the diameter of the fitting portion, so the holding portion is the fitting portion. The structure which wraps around may be sufficient.

(Effect of Modification 1 of Pipe Part)
The pipe part 200 of this modification includes a holding part 22 that is attached to the end opposite to the end on which the pointed portion 21 of the pipe body 20A is provided, and a fitting part 24 that is fitted to the holding part 22. A seal member holding mechanism 300 having the above is provided. Since the first seal member 32 is compressed and held by the holding portion 22 and the fitting portion 24, the effect of sealing (airtightness) by the first seal member 32 is enhanced, and volatilization into the outside air and mixing of the outside air are prevented. There is an effect that it can be further reduced.

  In the pipe part 200 according to the first modification, the seal member holding mechanism 300 includes the holding part 22 and the fitting part 24. However, the seal member holding mechanism 300 is not limited to this. For example, the first seal member 32 may be directly compressed and held between the pipe portion 20 and the fitting portion 24.

(Modification 2 of the pipe part)
In the pipe part 200 of the first modified example, it is possible to form screws that are screwed together in both the holding part 22 and the fitting part 24.

(Effect of Modification 2 of Pipe Part)
In the pipe part 200 of this modification 2, since the fitting part 24 can be screwed with respect to the holding | maintenance part 22, there exists an effect that the seal | sticker by the 1st seal member 32 can further be improved.

(Modification 3 of the pipe part)
In the above-described one embodiment and each modification, a male screw is formed on at least a part of the peripheral surface of the pointed head 21 at one end of the pipe portion 20 and the pointed head 21 at one end of the pipe body 20A. You can also

(Effect of modification 3 of the pipe part)
In the pipe portions 20 and 200 of the third modification, since the male screw is formed on at least a part of the peripheral surface of the tip portion 21, the liquid storage container 40 is formed by the pipe portion 20 or the tip portion 21 of the pipe body 20A. When piercing through the plug 41, the pipe portions 20 and 200 need only be pushed in while rotating in the spiral direction of the male screw. Thereby, the effect that the upper part of the stopper 41 can be easily pierced by the pipe part 20 and the pipe main body 20A is obtained.

  Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other embodiments conceivable within the scope of the technical idea of the present invention are also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 100 Gas sampling adapter 10 Fixing part 10a Ceiling part 10b Cylindrical part 12 Mounting part 12A Split piece 20 Pipe part 20A Pipe main body 21 Pointed head part 22 Holding part 24 Fit part 40 Liquid storage container 41 Plugs 30 and 32 1st seal member 31 Second seal member 200 Pipe portion 300 Seal member holding mechanism

Claims (8)

A fixed portion having a ceiling portion having an insertion hole and a cylindrical portion mounted on a stopper of the liquid storage container;
A gas sampling adapter having a pointed head formed at one end, a first seal member provided at the other end, and a pipe portion into which the one end is inserted into the insertion hole. The gas sampling adapter according to claim 1,
The liquid container further includes a second seal member disposed between the stopper of the liquid storage container and the ceiling portion, and the second seal member includes a periphery of the insertion hole of the ceiling portion and the liquid storage container. Gas sampling adapter that seals between the stopper. The gas sampling adapter according to claim 1 or 2,
A mounting portion including a pair of semi-cylindrical divided pieces to be mounted on the stopper of the liquid storage container;
The gas sampling adapter, wherein the fixing part is attached to the stopper of the liquid storage container via the attachment part. The gas sampling adapter according to claim 3,
A gas sampling adapter, wherein a male screw is formed on a peripheral surface of the mounting portion, and a female screw that is screwed with the male screw is formed on the cylindrical portion. In the gas sampling adapter according to any one of claims 1 to 4,
The said pipe part is a gas sampling adapter which has a pipe main body by which the pointed head was provided in the said one end, and the sealing member holding mechanism provided in the said other end of the said pipe main body. The gas sampling adapter according to claim 5,
The seal member holding mechanism is
A holding part attached to the other end of the pipe body;
A fitting portion that fits into the holding portion;
The gas sampling adapter, wherein the first seal member is compressed and held by the holding portion and the fitting portion. The gas sampling adapter according to claim 6,
The gas sampling adapter, wherein the holding portion and the fitting portion are formed with screws that are screwed together. In the gas sampling adapter according to any one of claims 1 to 7,
A gas sampling adapter, wherein a male screw is formed on at least a part of the pointed head.

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