JPH0299842A - Dustless bottle cap - Google Patents

Abstract

PURPOSE:To enable extraction of a sample without opening or closing a cap by arranging a valved tube for extraction at a fixing part and a valved tube for gas injection and a filter. CONSTITUTION:When a sample within a bottle, namely, a liquid such as chemical or pure water is supplied to a measuring device to analyze, a pressure gas, for example, a highly pure nitrogen gas from a tube 8 for gas injection provided at a fixing section 9 is injected into the bottle through a filter 6. As a result, the inside of the bottle is pressurized to allow the sample to be withdrawn through a tube 5 for sample extraction. The gas to be injected is cleared of dust by a filter 6. This eliminates effect of dust in the pressure gas on the sample within the bottle and when an amount of dust of the sample is measured, scattering in a measured value can be suppressed as affected by a peripheral atmosphere. Thus, the extraction of the sample is made possible without opening or closing a cap.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a bottle cap used in fields requiring cleanliness such as semiconductors.

[Conventional technology]

3 and 4 are views showing a conventional medicine bottle and cap, with FIG. 3 being a sectional view and FIG. 4 being an exploded perspective view.

In the figure, (1) is a bottle, (2) is a fixed part with flanges on both upper and lower ends, and (3) is a cap-shaped rotating part with a round hole in the center.

Next, the effect will be explained. When closing the cap on the bottle (1), rotate the rotating part (3) while pressing the fixed part (2) against [1] of the bottle (1). Also, when opening
Similarly, while pressing the fixed part (2), rotate the rotating part (3) in the opposite direction to the above, and then rotate the fixed part (2) and the rotating part (3).
) together with the

[Problem to be solved by the invention]

Conventional bottle caps are constructed as described above, so when taking out the sample inside the bottle, the cap must be opened and closed.When the cap is opened, the surrounding atmosphere contaminates the inside of the bottle. was there.

This invention was made to solve the above-mentioned problems. When taking out a sample from a bottle, the sample can be taken out without opening or closing the cap, and the bottle cap can be removed without being affected by the surrounding atmosphere. The purpose is to obtain.

[Means to solve the problem]

The bottle cap according to the present invention has a sample extraction tube equipped with a valve, a filter, and a gas injection tube equipped with a valve attached to a fixed part of the cap.

[Effect]

In this invention, when taking out the sample inside the bottle, it is possible to remove the sample without opening or closing the cap, so the inside of the bottle is not affected by the surrounding atmosphere and the sample is not contaminated.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a dustless bottle cap.

In the figure, (3) is the rotating part, (4) and (7) are the valves,
(5) is a sample extraction tube, (6) is a dust removal filter, (8) is a gas injection tube, and (9) is a fixed part.

Next, the operation will be explained. When supplying the sample in the bottle (1), i.e., a liquid such as a drug or pure water, to a measuring device for analysis, pressurized gas, such as high-purity nitrogen gas, is supplied to the filter (6) from the gas injection tube (8). Through the bottle (1
). This pressurizes the inside of the bottle (1), allowing the sample to be taken out through the sample extraction tube (5). The injected gas is filtered ([i
) to remove dust. Therefore, the bottle (1
) is not affected by dust in the pressurized gas, and it is possible to suppress variations in measured values due to the influence of the surrounding atmosphere when determining the dust:1: of the sample at Wl11.

For example, in order to keep the inside of the bottle (1) highly clean, there is a fixed part (9) for the bottle (+) and the cap, a rotating part (3), a tube for sample extraction (5), and a tube for gas injection (8). The material is 5VS3
RmaX is 1.0 μm by electrolytic polishing of the inner surface using 16
Use a material that has a smooth surface and is resistant to dust. The filter (6) is one that hardly allows dirt to pass through, for example 0. Use a material that has the ability to prevent 99% or more of dust of 1 μm. Also valve (4),
For (7), use a material that generates as little dust as possible to meet such high cleanliness requirements, such as an electrolytically polished product with a bellows diaphragm structure.

Of course, when filling the sample or using the sample to close the cap, wash the cap with pure water and dry it naturally in a clean room, for example at a temperature below class 10, or with clean dry air or nitrogen gas. Use after drying.

In addition, in the above embodiment, when filling the sample, the case was explained in which the cap was removed, but it is also possible to fill the sample without removing the cap. FIG. 2 is a perspective view showing the cap according to the embodiment in that case, and (3) to (8) are equivalent to those shown in FIG. 1.

(10) is a fixed part, (11) is a tube for sample injection, (
12) is a valve. Attach the valve (12) to the fixed part (10).
) A sample injection tube (11) with a mark on it is removed. When collecting a sample into the bottle (1) through the sample injection tube (11), the sample can be filled without opening or closing the cap, so sampling is not affected by the surrounding atmosphere at all. .

(Effects of the Invention) As described above, according to this invention, a sample extraction tube and a gas injection tube with a filter are attached to the fixed part of the cap, so when taking out a sample, it is not necessary to open and close the cap. This has the effect that there is no need to carry out any process, and there is no influence from the surrounding atmosphere.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a dustless bottle cap according to one embodiment of the present invention, FIG. 2 is a perspective view showing a dustless bottle cap showing another embodiment of the invention, and FIGS. 3 and 4 are conventional Fig. 3 is a sectional view and Fig. 4 is an exploded perspective view of the bottle and cap. In the figure, (3) is the rotating part, (4), (7), (12) is the valve, and (5)
is a tube for sample extraction, (6) is a filter, (8) is a tube for gas injection, (9) and (10) is a fixed part, (1
1) is a tube for sample injection. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Agent Masuo Oiwa Figure 3 Figure 4/ Written amendment to the procedure (voluntary) 1999 11 17 Showa Month/Date 2 5° Detailed description of the invention in the specification to be amended. 6. Contents of amendment (1) In the 4th page, line 12 of the specification, "SvS" is corrected to "SUS". Dustless Bottle Cap 3 over the title of the invention, representative of the person making the amendment: Kimoriya

Claims (1)

[Claims] A bottle cap consists of two parts: a rotating part with a round hole and a fixed part with flanges on both the top and bottom ends.The fixed part has an extraction pipe with a valve, a valve, and a gas injection pipe with a filter. This dustless bottle cap is characterized by the fact that there is no need to open or close the cap when taking out a sample inside the bottle.