JPH0723277U - Adsorption efficacy indicator - Google Patents

Abstract

(57) [Abstract] [Purpose] A compact and lightweight indicator structure that can be placed side by side on a relatively large adsorption / removal device to know the end of the adsorption / removal capability of the device, and a new proposal for its manufacturing method [Configuration] The substrate 1 and the lid 2 which are a support body made of plastic or the like through which the adsorbent does not pass through the adsorbent 3 having an adsorbing power for the substance (adsorbate) to be adsorbed and removed, and the display body 4 which is chemically reacted with the adsorbate and discolors It is placed between the two and is sealed and formed into a flat plate to form a display. [Function] In use, when the specified end of the display device is cut and opened, the operation is started, the adsorbent 3 fills a predetermined adsorption amount, and when the adsorbate reaches the display body 4 without being adsorbed, a display is made. The body 4 is discolored, and a display prompting the user to take measures such as replacement / regeneration of the adsorbent of the adsorbing / removing devices arranged side by side.

Description

[Detailed description of the device]     Industrial applications This device is designed so that the adsorption action of the adsorbent will end up in the exposed environment before the breakthrough. A simple notice is displayed on the powder to prompt the replacement of the adsorbent, and the target adsorbate passes through the adsorbent. Be able to prevent things from happening.     Conventional technology   Conventionally, in equipment that uses an adsorbent, a container filled with a certain amount of adsorbent, etc. Introduce air, etc., containing the target adsorbate, contact it with the adsorbent, and The adsorbed material is removed by adsorption. Ability to adsorb and remove adsorbates from each adsorbent If you exceed this ability, you will not be able to remove it and you will pass. Break this state It is called over. In general, it is necessary to switch to a spare adsorbent before a breakthrough occurs. We have provided a container filled with the system's adsorbent and placed it in a certain period of time. It However, to determine the remaining capacity, remove the adsorbent and perform a complex analysis. It is economical for small-scale use, such as investigating the concentration change of the adsorbate before and after the adsorbent. Therefore, there is a demand for a simple detection means that is not suitable. Issues to be solved by the invention   This invention was devised to solve the above-mentioned drawbacks and is explained in the drawings. Reveal FIG. 1 is a sectional view corresponding to a front view and is taken along the line BB ′ in FIG. Represents The substrate 1 and the lid 2 are made of a plastic material, and the portion where the substrate 1 and the lid 2 are in contact with each other is It is adhered by an adhesion method such as ultrasonic welding. Adsorbent 3 is a space created by substrate 1 and lid 2. Are filled with the display body 4, the adsorbent 5, and the display body 6. Opposite lid 2 to substrate 1 Adhesive 7 is applied to the surface of the paper, and a protective paper is used to protect the adhesive surface until it is used. It is covered with 8.   The second view is a top view, but the lid 2 is made of a transparent plastic material in terms of its function. It Therefore, draw the components visible from the top through the lid 2 as they are visible. There is. A mark 9 for cutting is attached to the lid 2. Cut off at the beginning of use The action is started by cutting along the line mark 9.   FIG. 4 is a front cross-sectional view of the usage state. The function of this indicator will be described with reference to FIG. 4 in use.   When it is cut along the cut mark 9 and used, the left end surface of FIG. The exposed adsorbent 3 starts adsorbing an adsorbate. The left end surface of the adsorbent 3 reaches the adsorption capacity Then, a breakthrough condition occurs, and the adsorbate enters the deeper part (right side in Fig. 4). Become. As a result of repeating this state, when all the adsorbents 3 reach the adsorption capacity, the breakthrough state is reached. The object to be adsorbed reaches the display body 4. When the display body 4 comes into contact with the object to be adsorbed, The change in color indicates that the adsorbent 3 is in a breakthrough state, and the outside of the lid 2 made of a transparent material. Discoloration can be detected from the side. A typical example of such a change is when the adsorption target is ammonia. It is well known that at that time, phenolphthalene changes from colorless to red. After the adsorbents 5 and 6 have the same basic function and the adsorption amount has passed, 6 discolors. This is due to the discoloration of the display body 4 and the arrangement for the replacement of the adsorbent was started, and It is used for functions such as exchanging the adsorbent before the color changes. Of the display colors of the display units 4 and 6 The change may be partial, for example, it is possible to display letters and patterns such as "need to be replaced". It   As described above, this adsorption efficacy indicator is the adsorption used for the main body due to its function. It is effective to use an adsorbent of the same quality as the adsorbent for adsorbent 3 and adsorbent 5. If the property is well known, other adsorbents can be used because of the correlation. Again Due to its characteristics, the substrate 1 and the lid 2 formed of the plastic material do not allow adsorbate to pass through. Select a suitable material, such as stacking different materials if necessary. Board 1 The method of adhering the lid 2 and the lid 2 may be any method as long as a solid manufacturing method that does not allow permeation of the adsorbent is used. FIG. 3 is a sectional view taken along the line AA ′ in FIG. Or adhere it with another adhesive, etc., so that the adsorption target does not come into contact with the adsorbent 3 Try not to reach Dimension 4. The cross-sectional shape is drawn as a simple rectangular shape in the figure, but the part in contact with the substrate 1 is a straight line. If present, it may be transformed into a trapezoid, a semicircle, a kamaboko shape, etc. , The vertical direction is appropriately determined within the range not exceeding the horizontal dimension. Adsorbent 3 breaks through The adsorption resistance up to is determined by the length in the direction of the line BB 'in FIG. Therefore quantitative Determine the amount of adsorption with the adsorbent, and adjust the length according to the amount that reaches breakthrough at the concentration used. Should be set. As the length is adjusted, it is determined by the length in the direction of the BB 'line in Fig. 2. Not only simple straight lines, but, as is well known, meandering or spiral It is suitable to obtain a small adsorbent efficacy indicator with a large breakthrough resistance by making 3 shapes of adsorbent. It is needless to say that what is being done is that the exposed end face of the adsorbent 3 in use and the display body The length on the path of 4 determines the characteristics of the adsorption efficacy indicator. When manufacturing this adsorption efficacy indicator, the end faces 10 and 11 in FIG. Since it is possible to provide it at low cost because it is excellent in mass productivity in this case, The economic benefits are also great.   In addition, the left and right parts 12 of FIG. It has a small hole that communicates with it, and before use it is an adhesive seal made of a material that does not transmit the object to be adsorbed. One method is to cover and place it, and peel it off for use to open a hole. Existence.   The effectiveness of the adsorbents is approaching the end, due to using this adsorption efficacy indicator It is possible to know properly, and it is possible to reliably replace the adsorbent. A system that uses a small amount of adsorbent reduces the economic burden of analysis and measurement of adsorption capacity. Can be converted.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front sectional view. (A view seen from the direction of the arrow in the cross section taken along the line BB 'in FIG. 2) FIG. 2 is an internal perspective view of the top view. FIG. 3 is a sectional view. (A view as seen from the direction of the arrow in the cross section taken along the line AA 'in FIG. 1) FIG. 4 is a front cross-sectional view in use.

Claims (1)

[Claims for utility model registration] (1) An adsorbent is formed in a flat plate shape on a plastic support that does not allow the target adsorbate to pass through, and at one end of the display, the color of the target adsorbate changes color. When the adsorption efficacy indicator (2) (1) in which the bodies are arranged and integrated is manufactured, it is divided into individual pieces in a state in which a plurality of them are created in a continuous shape and are finished products. In the manufacturing method (3) (1), the plate-shaped adsorbent has a structure in which the wider cross-sectional shape of the adsorbed material is sealed toward the plate-shaped support. (4) A structure in which a sticky substance is applied and placed on the outer side of the flat support of the adsorption efficacy indicator of (1), and the adsorption efficacy indicator can be installed in the exposure environment of the adsorbent that requires the adsorption efficacy indicator. .