JPS61247937A - Underwater collector - Google Patents

Abstract

PURPOSE:To collect a sample in a short time and to discriminate the size of a minute particle entering into the pure water by providing an outside vessel storing a vessel containing the pure water and introducing positively the air of objective space to be analyzed therein and providing a filter on an air intake port of the outside vessel. CONSTITUTION:The vessel 1 containing the pure water 2 is stored in the outside vessel 3. The top of this outside vessel 3 is open and the filter 4 is fitted thereto and besides, a discharge port 5 is provided to the side and a wind discharging means 6 such as the vacuum piping or a vacuum pump is connected with the discharge port 5. Here, the filter 4 to prevent from passing of a minute article over 0.3[mum] is used. The vessel 1 containing the pure water and the outside vessel 3 are constituted of 'Tefuron(R)' easy for cleaning respectively but glass or the like may be used for the material.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an underwater collection device that collects spatial components by filling a container with an open top with pure water and exposing the surface of this pure water to a space to be analyzed. Regarding.

[Technical background of the invention and its problems]

FIG. 2 is a sectional view showing the structure of a conventional underwater collection device of this type, in which pure water 2 is placed in a Teflon container 1 with an open top.

This underwater collection device is used for environmental analysis in clean rooms, for example, and if left in the analysis target space for about 10 hours, fine particles in the air may fall into pure water, or gases in the air may It dissolves in pure water.

The environment of the space to be analyzed can be analyzed by capping the container 1, collecting the water inside, and analyzing it by atomic absorption, ion chromatography, or the like.

By the way, in this environmental analysis, for example, if chlorine is detected because fine particles of chloride have dissolved into pure water, it will be easier to find the cause if you know how large the fine particles were. It may become.

However, in the above-mentioned conventional underwater collection device, the particulates or gases in the space to be analyzed are indiscriminately dissolved, so it is difficult to identify the cause of the presence of chlorine.

In addition, since conventional underwater collection devices are configured so that fine particles in the analysis target space naturally fall into pure water, they must be left in the analysis target space for 10 hours, for example.
It was unsuitable for environmental analysis where spatial components change in a short period of time.

[Purpose of the invention]

The present invention has been made in order to solve the problems of the conventional device described above, and is capable of determining the size of fine particles entering pure water during environmental analysis, and is capable of collecting spatial components to be analyzed in a short time. The purpose is to provide a collection device.

[Summary of the invention]

To achieve this objective, the present invention provides an underwater collection device in which pure water is poured into a container with an open top, and the surface of this pure water is exposed to a space to be analyzed to collect spatial components. an outer container having a mouth and accommodating the container therein; a filter provided at the intake port of the outer container; and an exhaust gas configured to draw air from the analysis target space into the outer container through the filter. It is characterized by comprising an air exhaust means coupled to the mouth.

[Embodiments of the invention]

FIG. 1 is a sectional view showing the configuration of an embodiment of the present invention.

In the figure, a container 1 containing pure water 2 is housed in an outer container 3. The outer container 3 has an open upper part to which a filter 4 is attached, and is also provided with an exhaust port 5 on the side, to which an exhaust means 6 such as vacuum piping or a vacuum pump is connected. There is. Here, as the filter 4, one that blocks the passage of fine particles of 0.3 [μm] or more is used.

In the above configuration, when the air exhaust means 6 slowly exhausts the air inside the outer container 3, the air in the analysis target space is taken into the outer container 3 through the filter 4. Here, the filter 4 is provided at the upper part of the outer container 1, and the container 1 containing the pure water 2 is also open at the top, so that the air taken into the outer container 3 through the filter 4 is transferred to the surface of the pure water 2. It is thought that it will flow towards. Therefore, the gas in the analysis target space is actively absorbed into the pure water 2, and the fine particles also quickly fall into the pure water 2.

According to experiments, the conventional underwater collection device shown in Figure 2 had to be left in the analysis target space for about 10 hours.
According to the example shown in FIG. 1, environmental analysis was possible by simply leaving it for about one hour.

Further, in this embodiment, since particles larger than 0.3 [μm] are blocked by the filter 4, environmental analysis limited to particles smaller than 0.3 [μm] is possible.

Note that the filter 4 is not limited to the so-called 0.3 [μm] filter, which blocks fine particles of O,'3 (μm) or larger, for example, 0.3 [μm].
．． For 1 (μm), for 0.5 [μm], for 2 [μm],
Alternatively, it can be replaced with one for 10 [μm], etc., so that the size of contaminant particles can be known when performing environmental analysis.

In the above embodiment, the container 1 for containing pure water and the outer container 3 are made of Teflon, which is easy to clean, but they may be made of glass or the like.

In addition, in the above embodiment, an outer container was explained in which the upper part was opened, a filter was attached thereto, and an exhaust port was provided on the side. The same effect as described above can be achieved even if the inlet is provided on the side, as long as the gas or particles in the air taken in from the inlet quickly dissolves or falls into the pure water.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, an outer container is provided for storing a container containing pure water, and air from the analysis target space is actively introduced into the outer container, so that the sample can be sampled in a short time. This also makes it possible to manage environments where the spatial components change frequently.

Further, according to the present invention, since a filter is provided at the air intake port of the outer container, when chlorine is detected, which is difficult to remove contamination, it may be caused by particles of 0.3 μm or larger, for example. The effect is that it becomes possible to determine whether the particles are caused by the following particles.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing the structure of an embodiment of the present invention, and FIG. 2 is a sectional view showing the structure of a conventional underwater collection device. 1... Container, 2... Pure water, 3... Outer container, 4...
...filter, 6...ventilation means. Applicant's agent Kiyoshi Inomata also Figure 52

Claims (1)

[Claims] 1. An underwater collection device that collects spatial components by filling a container with an open top and exposing the surface of this pure water to a space to be analyzed, which has an intake port and an exhaust port. an outer container housing the container therein; a filter provided at an intake port of the outer container; and a filter coupled to the exhaust port so as to draw air from the analysis target space into the outer container through the filter. An underwater collection device characterized in that it is equipped with an air exhaust means. 2. The underwater collection device according to claim 1, wherein the inlet port is provided in the upper part of the outer container, and the exhaust port is provided in the side part of the outer container.