JPH0732542U - Auto sampler - Google Patents

Abstract

(57) [Summary] [Purpose] When a liquid is sampled and a sample is analyzed, organisms and microorganisms in the liquid are filtered and separated without human labor, and the change of the substrate is stopped and the sample is stored. Even when the sample is analyzed after a considerable amount of time has passed to collect a predetermined number of samples, it is possible to obtain accurate changes over time and correct information. Provide an auto sampler that can obtain accurate changes over time and correct information. [Configuration] The autosampler of the present invention filters the sample container 10 by, for example, disposing a filter material 15 in the cap 12 or the funnel 13 of the sample container 10 formed of the sample bottle 11, the cap 12 and the funnel 13. By imparting the function, the organisms and microorganisms contained in the sample injected into the sample container from the distributor of the autosampler are separated, and the collected liquid substrate is preserved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention utilizes, for example, brewing and substrate production by utilizing the functions of organisms and micro organisms, such as checking the time course of fermentation in a brewing tank and detecting the time course of water quality in the aeration tank of a sewage treatment plant. The present invention relates to an autosampler that is particularly suitable for collecting liquid samples in the decomposition and wastewater treatment industries.

[0002]

[Prior art]

 FIG. 1 is a diagram showing an entire apparatus of a conventional autosampler, and FIG. 2 is a diagram showing a part thereof. In FIG. 1, 1 is a case for covering the weighing unit 2, 2 is a weighing unit for weighing the collected sample, 3 is a sample bottle storage case, and the sample bottles 4 are arranged in a circle in the case. Has been.

The operation of a conventional autosampler will be briefly described with reference to FIG. 2. A sample taken from a water sampling hose inlet 5 by a compressor (not shown) at a predetermined time interval is measured by a measuring unit. After being weighed in the second weighing tank 2 ′, it is poured into the sample bottle 4 by the distributor 6. A large number of sample bottles 4, for example 24, are arranged in a bottle storage case 3 (FIG. 1) in a circular shape. The distributor 6 is rotated by a constant angle by the stepping motor 7 every predetermined time, and injects the sample into an adjacent sample bottle. After the desired number of samples are collected from the plurality of bottles, the change of the samples with time is analyzed.

[0004]

[Problems to be solved by the device]

 However, in the conventional autosampler, when inspecting the sample liquid sampled at regular intervals, it does not have filtration / separation means inside, so if you try to inspect after collecting a certain number of samples. However, there is a case that the substrate of the liquid has already changed due to the action of organisms and microorganisms contained in the collected liquid, and it has a drawback that it is not always possible to obtain a sample with a correct change over time.

In order to avoid the disadvantage, the substrate is changed by the action of organisms and microorganisms, but the substrate is changed by filtering and separating the organisms and microorganisms immediately after collecting water. It was necessary to stop and save. Therefore, manual labor is required for each filtration and separation, and the conventional autosampler described above cannot be used for sampling and storage of such liquid, and automation of sampling is difficult. .

Therefore, an object of the present invention is to filter and separate organisms and microorganisms in a liquid without stopping the change of the substrate when the liquid is sampled and the sample is analyzed. By storing the sample, it is possible to obtain accurate changes over time and correct information even when the sample is analyzed after a considerable amount of time has passed to collect a specified number of samples. To provide.

[0007]

[Means for Solving the Problems]

 The autosampler of the present invention separates and removes the organisms and microorganisms contained in the sample injected into the sample container from the autosampler distributor by providing the sample container with a filtering function. It is characterized in that changes in the substrate are suppressed and the original substrate of the sample can be preserved.

[0008]

【Example】

 FIG. 3 shows an example of a sample container 10 used in the autosampler according to the present invention, which is composed of a sample bottle 11, a funnel 13 and a cap 12 which connects them. The sample bottle 11 has a substantially fan-shaped horizontal cross-section so that a plurality of sample bottles 11 can be stored in a circular bottle storage case 3 in a circular shape.

FIG. 4 shows an example of a cap 12 that connects the sample bottle 11 and the funnel 13. The cap 12 shown in this figure is formed by bonding two ordinary bottle caps 12 'and 12 "at the top thereof and hollowing out the center thereof. Of course, the cap 12 is integrally formed. It is also possible to do so.

After the cap 12 is screwed onto the sample bottle 11 shown in FIG. 3, as in the first embodiment shown in FIG. 5, the upper plate 12 ′ of the cap 12 has a perforated plate 14 and organisms. A filter material 15 capable of filtering and separating microorganisms, for example, a filter paper whose mesh is slightly larger than 7 μ and capable of coarse sedimentation filtration is arranged. Note that, as shown in FIG. 6, the perforated plate 14 and the filter material 15 may be arranged on the lower side portion 12 ″ of the cap 12 and then the cap 12 may be screwed onto the sample bottle 11. However, In this case, the diameter of the plate 14 and the filter medium 15 must be made larger than the inner diameter of the mouth of the sample bottle 11 so as not to drop into the sample bottle 11.

When it is necessary to perform sufficient filtration, the caps 12 can be arranged on both sides 12 ′ and 12 ″ of the cap 12. In addition, when a filter material such as porous ceramic is used, Accordingly, it is possible to arrange only the filter medium 15 without arranging the perforated plate 14.

After disposing the perforated plate 14 and the filter medium 15, a screw-in funnel 13 is screwed on the upper part 12 ′ of the cap 12 to form the sample container 10 as shown in FIG. . In FIG. 3, the funnel 13 has an inverted shape of the sample bottle shown in FIG. 3 and has no bottom, and the funnel 13 is installed on the sample bottle 11 via the cap 12. As shown in FIG. 7, it is possible to store a plurality of sample containers 10 in a circular shape in a bottle storage case 3 (illustrated by a dotted line). However, the funnel 13 shown in FIG. 3 is merely an example, and the shape and size of the funnel 13 are not limited as long as the sample containers 10 can be stored in the bottle storage case 3 in a circular shape, for example. It is optional.

When the conventional autosampler bottle storage case 3 is used as the bottle storage case, the sample container 10 protrudes from the case by the height of the funnel 13 and the weighing unit 2 is placed on the bottle storage case 3. Cannot be installed. Therefore, in this case, after attaching an annular support member 16 having a height higher than that of the funnel 13 to the conventional bottle storage case 3 as shown in FIG. 8, the weighing unit 2 is supported by the support member. Install on top of 16. In addition, as the bottle storage case, from the beginning, the height of the funnel 13 is taken into consideration, and not only the sample bottle 11 but also the funnel 13 is designed, that is, a height designed to store the sample container 10 is prepared. The good thing is, of course.

In the first embodiment described above, the filter material 15 is arranged in the cap 12, but without disposing it in the cap 12, the coffee filter is placed in the funnel 13 as in the second embodiment shown in FIG. A filter material 17 such as a filter paper having such a shape may be arranged. In this case, the funnel 13 and the sample bottle 11 may be integrally formed to form the sample container 10. In this case, the shape of the bottle neck portion is such that the upper part of the sample container 10 functions as a funnel. Various modifications are possible as long as they are not lost.

Furthermore, in the above-described first and second embodiments, the sample outlet may be separately provided in the lower portion of the sample bottle 11. When arranging a plurality of filter media in the cap 12 or in both the cap 12 and the funnel 13, they may be of the same type or the same mesh, or may be different if necessary. .

The advantage of the first embodiment is that the setting is simple, while the advantage of the second embodiment is that the bottle can be easily washed simply by discarding the filter paper after water collection. In point.

[0017]

[Effect of device]

 According to the autosampler according to the present invention, since the sample container is newly provided with a filtering function, when the liquid is sampled and the sample is analyzed, organisms and microorganisms in the liquid can be collected without labor and labor. It can be filtered and separated, the change in the substrate can be stopped and stored, and therefore accurate analysis is not required even when the sample is analyzed after a considerable amount of time has passed to collect a predetermined number of samples. It is possible to obtain correct information as time goes by.

[Brief description of drawings]

FIG. 1 is a diagram showing an entire apparatus of a conventional autosampler.

FIG. 2 is a diagram showing a part of a conventional autosampler device.

FIG. 3 is a view showing a sample container used for the auto sampler according to the present invention, which is formed by mounting a cap on a sample bottle and screwing a funnel on the cap.

FIG. 4 is a view showing a cap of a sample bottle used in the embodiment of the present invention.

FIG. 5 is a view in which a filter material such as a perforated plate and a filter paper is arranged on the upper side of a cap used for connecting a sample bottle and a funnel.

FIG. 6 is a view in which a filter material such as a perforated plate and a filter paper is arranged on the lower side of the cap used for connecting the sample bottle and the funnel.

FIG. 7 is a diagram in which a plurality of sample containers each having a funnel screwed to a sample bottle via a cap are stored in a bottle storage case in a circular shape.

FIG. 8 is a view showing a support member to be inserted between the bottle storage case and the weighing unit when the conventional bottle storage case is used.

FIG. 9 is a view showing a second embodiment according to the present invention.

[Explanation of symbols]

 2 Measuring Section 2'Measuring Tank 3 Sample Bottle Storage Case 10 Sample Container 11 Sample Bottle 12 Cap 13 Funnel 15 Filter Material, Filter Paper 16 Support Member

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G01N 35/10

Claims (6)

[Scope of utility model registration request] 1. An autosampler equipped with a sample container having a filtering function. 2. The autosampler according to claim 1, wherein the sample container is a container in which a funnel and a sample bottle are detachably connected by a cap. 3. The autosampler according to claim 2, wherein a filter material is arranged on the cap. 4. The autosampler according to claim 2, wherein a filter paper is arranged in the funnel. 5. The autosampler according to claim 2, wherein the autosampler is disposed between the measuring section, the sample bottle storage case section, and between the sample bottle storage case and the measuring section, and is from the funnel. An auto sampler having a high-height support member. 6. The autosampler according to claim 1, wherein the sample container is a container in which a funnel and a sample bottle are integrally formed, and a filter paper is arranged in the funnel. .