JPS6025438A - Cassette for filter - Google Patents

Abstract

PURPOSE:To facilitate the attachment and detachment of a filter by forming a recessed part wherein the circumferential edge of the filter is stored along the upper circumferential edge of the through hole of a cassette body, and providing a pressure lid which is fixed to the top surface of the cassette body in an opening/closing state and has a through hole for pressing the circumferential edge part of the filter. CONSTITUTION:The cassette body 11 has three through holes 12 extending from the top surface to the reverse surface at constant intervals, and circular recessed parts 13 wherein the circumferential edge part of a circular filter which acquires a sample are formed along the upper circumferential edges of the through holes 12. Further, square recessed parts 14 are formed along the circumferential edges of the recessed parts 13, and a pressure lid 17 which has a through hole 16 with a diameter nearly as large as that of a through hole 12 is arranged in each recessed part 14 while pivoted on one side of the recessed part 14 with a hinge 15, etc. This filter cassette 11 contains a filter in the recessed part 13 after the pressure lid 17 is opened, and the pressure lid 17 is closed to load the filter in the filter cassette 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention 1] The present invention relates to a filter cassette used in various analytical devices that automatically analyze the chemical components of a filter that collects a sample.

[Technical Background of the Invention] For example, analysis of chemical components contained in a liquid or gas is performed by passing the gas or liquid through a filter for a certain period of time, and analyzing an IC sample collected by the filter. .

Recently, automatic analyzers have been developed that automatically analyze the chemical components of filters that collect these samples.

For example, in the automatic analyzer for metal impurities in reactor cold U1 water developed by the present applicant, as shown in Figure 1, a Millipore filter and cation exchange paper are used to collect impurities in the cooling water flowing inside the reactor. , Filters 1 such as AniA replacement paper are fixed by pasting their peripheral edges 4 onto the through holes 2 of the filter cassette 3 in which through holes 2 are formed at regular intervals using adhesive or the like. After that, as shown in FIG. 2, a plurality of filter cassettes 3 are inserted into a square filter container 6 having a large number of grooves 5 formed on the inner surface, and the filter container 6 is inserted into the filter container 6 as shown in FIG. As shown in FIG. 4, after being inserted into a predetermined position of an automatic analyzer, the chemical components of the filter 1 attached to the filter cassette 3 housed in the filter container 6 can be sequentially analyzed. It is being said.

That is, in FIGS. 3 and 4, the filter container 6 is vertically movable, and the filter container 6 is vertically movable.
The uppermost filter cassette 3 disposed inside is pushed out by the push rod 7, and when the chemical components of the filter 1 are detected by the detector 9 at a predetermined detection position 8, the return rod 1 is pushed out.
J to 0: The refilter container 6 is returned to the first stage, and then the filter container 6 moves upward, and the filter cassette 3 located next to the top stage is pushed out to the detection position 8 by the push rod 7. Then, the filters 1 disposed in the plurality of filter cassettes 3 housed in the filter container 6 are analyzed using the same procedure.

[Problems with the Background Art] However, in the conventional filter cassette 3C used in such an analysis device, fixing the filter 1 to the filter cassette 3 as described above involves sticking the filter 1 to the filter cassette 3. Since the pasting work was done by a number of methods, it took a long time and there was a risk of damaging the sample during pasting. Filter 1 attached once again
It was difficult to remove it from the filter cassette 3 and reuse it.

[Object of the Invention] The present invention addresses such conventional circumstances and improves C1.
It is an object of the present invention to provide a filter power set 1 which allows the filter 1 to be easily attached and detached from a filter cassette.

"Summary of the Invention" That is, the present invention includes a plate-shaped cassette body in which a through hole is bored from the upper surface to the lower surface, and a cassette body formed along the upper periphery of the through hole to accommodate the periphery of the filter. This filling cassette is characterized by comprising a concave portion and a presser lid that is openably and closably fixed to the upper surface of the filter main body and has a through hole that presses against the peripheral edge of the filter.

[Embodiment of the Invention] The details of the present invention will be described below with reference to the drawings.

The fifth tray 1a3J and FIG. 6 show filter cassettes according to an embodiment of the present invention, and in the figures, C reference 11 indicates a root-shaped cassette body made of, for example, transparent acrylic and having a thickness of 2 mm. The cassette body 11 is provided with three through holes 12 at regular intervals d3 from the top surface to the bottom surface. A circular recess 13 is formed along the upper periphery of the through hole 12 to accommodate the periphery of the circular filter 1 that has collected the sample. Furthermore, a -C rectangular recess 14 is formed along the periphery of this recess 13. A presser cover 17 made of transparent acrylic and having one side pivoted to one side of the recess 14 by a hinge 15, for example, and having a through hole 16 having approximately the same diameter as the through hole 12 is provided on the four parts 14 so as to be freely openable.

That is, in the filter cassette constructed as described above, after the presser cover 17 is opened, the filter 1 is moved to the four parts 13.
By closing and covering this rear presser foot i17,
The filter 1 is attached to the filter angle set 1-.

When the filter 1 is to be taken out from the filter cassette after the analysis of the filter 1 by the automatic analyzer is completed, the filter 1 can be easily taken out from the filter angular force set 1 by using the holding lid 17 as a book.

[Effects of the Invention] As described above, according to the filter cutlet l~ of the present invention, it is possible to quickly and reliably attach the filter to the filter force set 1- without damaging the filter. can.

[Brief explanation of the drawing]

Figure 1 is a top view without showing a conventional filter cassette;
Figures are shown in Figure 1 showing a front view of the filter container containing the filter output hits; Figure 3 is a front view showing the filter container shown in Figure 2. The measurement device is shown in a side view; Figure 4 is a top view of Figure 3;
FIG. 5 is a top view showing a filter cassette according to an embodiment of the present invention, and FIG. 6 is a cross-sectional view C taken along line Vl--Vl in FIG. 1......Filter 11...Cassette body 13...
・・・・・・・・・Concavity 17・・・・・・・・・Press machine representative Patent attorney Sa Suyama - Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] (1> A plate-shaped cassette body with a through hole drilled from the top surface to the bottom surface, four parts formed over the upper periphery of the through hole and accommodating the periphery of the filter, and an opening/closing part on the top surface of the cassette body. 1. A filter cassette comprising a presser tray that is freely fixed and has a through hole for pressing the peripheral edge of the filter.