Diffusion gradient film shell

Abstract

The utility model discloses a diffusion gradient film shell which comprises a sampler shell assembly, the sampler shell assembly comprises a base, a threaded column fixed on the base, a protective cover matched with the threaded column, a conical cover connected with the protective cover, and a filter membrane, a diffusion layer and an adsorption layer which are arranged between the threaded column and the protective cover. According to the utility model, the sampler shell assembly is arranged to form a threaded connection structure, so that the sampler shell does not need to be pried open when the adsorption film is recycled, the effect of repeated utilization can be achieved through simple methanol water cleaning, experimental resources are effectively saved, experimental wastes are reduced, and the experimental cost is reduced. And the structural design of the octagonal base is convenient to apply force to screw, the shell can be set into different colors, and the shells with the same color form one group, so that the marking is convenient.

Description

Technical Field

[0001] This utility model relates to the field of sampler housing technology, specifically a diffusion gradient thin film housing. Background Technology

[0002] The existing DGT device consists of a filter membrane, a diffusion layer, an adsorption layer, and a protective shell (including a base and a cover). The protective shell is used to firmly fix the three membrane layers. In the existing technology, the outer shell is usually fastened together by two shells during use. This structure is difficult to remove when the sampling time is long. It is necessary to pry it open to remove the filter membrane, diffusion layer, and adsorption layer, which is extremely inconvenient to use. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a diffusion gradient film shell. By setting the sampler shell assembly, a threaded connection structure is formed. In this way, when recovering the adsorption membrane, there is no need to pry open the sampler shell. It can be reused after simple methanol and water cleaning, which effectively saves experimental resources and reduces experimental waste. In addition, the octagonal base structure design makes it easy to twist. The shell color can be set to different colors, and shells of the same color are grouped together for easy identification.

[0004] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: a diffusion gradient thin film shell, comprising:

[0005] A sampler housing assembly includes a base, a threaded post fixed on the base, a protective cover adapted to the threaded post, a conical cover connected to the protective cover, a filter membrane, a diffusion layer, and an adsorption layer disposed between the threaded post and the protective cover.

[0006] In a preferred embodiment of the diffusion gradient film shell described in this utility model, the filter membrane, diffusion layer and adsorption layer are bonded together, and the filter membrane, diffusion layer and adsorption layer are pressed together by the conical cap.

[0007] In a preferred embodiment of the diffusion gradient thin film shell described in this utility model, the octagonal base, threaded post, protective cover, and conical cover are all the same color, and the color can be any one of them.

[0008] As a preferred embodiment of the diffusion gradient thin film shell of this utility model, it further includes an auxiliary component, which includes a circular hole opened in the threaded post and a spring disposed in the circular hole.

[0009] In a preferred embodiment of the diffusion gradient film shell described in this utility model, the auxiliary component further includes a circular plate connected to the top of the spring, and the diameter of the circular plate is the same as the diameter of the filter membrane, the diffusion layer and the adsorption layer.

[0010] As a preferred embodiment of the diffusion gradient film shell of this utility model, it further includes a separation component, which includes a threaded ring fixed to the bottom surface of the conical cover and a threaded groove formed on the top surface of the protective cover.

[0011] In a preferred embodiment of the diffusion gradient thin film shell described in this utility model, the base is octagonal.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] By setting up the sampler housing assembly to form a threaded connection structure, it is not necessary to pry open the sampler housing when recovering the adsorption membrane. It can be reused after simple methanol and water cleaning, which effectively saves experimental resources and reduces experimental waste. In addition, the octagonal base structure design makes it easy to twist with force. The housing color can be set to different colors, and housings of the same color are grouped together for easy identification.

[0014] With the helper components, the distributed filter membrane, diffusion layer and adsorption layer are automatically ejected when the user opens the sampler housing, making it easy for the user to remove them by hand.

[0015] By using a separate component, the conical cover and the protective cover are designed as separate parts. This way, if the threads at the threaded post are locked and cannot be opened, the conical cover can be opened directly, avoiding the problem of the threads being locked and affecting the removal of the filter membrane, diffusion layer and adsorption layer.

[0016] In practical use, the user places the filter membrane, diffusion layer, and adsorption layer on the threaded post. The user then rotates the octagonal base to connect the threaded post with the first internal thread inside the protective cover. At this point, the conical cover with a smaller front diameter locks the filter membrane, diffusion layer, and adsorption layer in place. The device can then be placed where sampling is required. Furthermore, the sampler housing components are designed in the same color, making it easy to identify and group when using multiple sampler housing components. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Fig. 1 The utility model discloses a structural diagram;

[0019] Fig. 2 The utility model discloses a structural diagram of auxiliary assembly;

[0020] Fig. 3 The utility model discloses a structural diagram of separation assembly.

[0021] In the drawing: 11, octagonal base; 12, threaded column; 13, protective cover; 14, conical cover; 15, first internal thread; 16, filter membrane; 17, diffusion layer; 18, adsorption layer; 21, round hole; 22, spring; 23, round plate; 31, threaded ring; 32, threaded notch. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0023] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from the description, and persons skilled in the art can make similar generalization without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0024] Secondly, the utility model is described in detail in combination with the schematic diagram, and when the embodiments of the utility model are described in detail, the sectional view of the device structure will be partially enlarged without the general proportion for the convenience of illustration, and the schematic diagram is only an example, which should not limit the scope of protection of the utility model here. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual manufacture.

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be described in further detail below in combination with the drawings.

[0026] The utility model provides a kind of diffusion gradient film shell, and the structure of screw connection is formed by the sampler shell component of being set, so that when recycling adsorption membrane, sampler shell can not be pried, can be washed by simple methanol water to achieve the effect of repeated utilization, more effective experimental resources are saved, experimental waste is reduced, and the structure design of octagonal base is convenient to exert force and turn, shell color can be set to different colors, shell body of the same color is a group, convenient identification.

[0027] Figs. 1-3 The whole structure schematic diagram of the utility model diffusion gradient film shell embodiment is shown, please refer to Figs. 1-3The main structure of the embodiment includes a sampler housing assembly.

[0028] The sampler housing assembly is used to form a screw connection structure, facilitating sampling. Specifically, the sampler housing assembly includes an octagonal base 11 (the base can be various suitable shapes and is not limited to an octagonal shape), a threaded column 12 fixed on the octagonal base 11, a protective cover 13 matched with the threaded column 12, a conical cover 14 connected with the protective cover 13, a filter membrane 16, a diffusion layer 17, and an adsorption layer 18 arranged between the threaded column 12 and the protective cover 13.

[0029] In specific use, the user places the filter membrane 16, the diffusion layer 17, and the adsorption layer 18 on the threaded column 12, and at this time, the user rotates the octagonal base 11 to screw the threaded column 12 with the first internal thread 15 in the protective cover 13. At this time, the conical cover 14 with a smaller front-end diameter directly locks the filter membrane 16, the diffusion layer 17, and the adsorption layer 18, so that the sampler housing assembly can be placed in a place where sampling is needed and used. In addition, the sampler housing assembly is designed in the same color, which facilitates identification and grouping when multiple sampler housing assemblies are used.

[0030] Further, through the arrangement of the auxiliary assembly, when the user opens the sampler housing, the distributed filter membrane 16, diffusion layer 17, and adsorption layer 18 are automatically ejected, facilitating the user to exert force with the hand to take out;

[0031] Specifically, the auxiliary assembly further includes a circular hole 21 arranged in the threaded column 12 and a spring 22 arranged in the circular hole 21.

[0032] The filter membrane 16, the diffusion layer 17, and the adsorption layer 18 are placed on the circular plate 23, so that when the protective cover 13 and the conical cover 14 are screwed down, the filter membrane 16, the diffusion layer 17, and the adsorption layer 18 are directly pressed and compressed, and at this time, the spring 22 is compressed. When the protective cover 13 is removed, the spring 22 loses the limit and directly pushes out the filter membrane 16, the diffusion layer 17, and the adsorption layer 18 for the user to remove.

[0033] Further, through the arrangement of the separation assembly, the conical cover 14 and the protective cover 13 are designed as a split mechanism, so that when the screw at the threaded column 12 is locked and cannot be opened, the conical cover 14 is directly opened, avoiding the problem that the screw lock affects the removal of the filter membrane 16, the diffusion layer 17, and the adsorption layer 18.

[0034] Specifically, the separation assembly further includes a threaded ring 31 fixed on the bottom surface of the conical cover 14 and a threaded slot 32 arranged on the top surface of the protective cover 13.

[0035] In specific use, the threaded ring 31 is screwed with the threaded notch 32, so as to facilitate the removal of the conical cover 14, so that when the threaded column 12 is locked and cannot be separated, the conical cover 14 can be unscrewed to take out the filter membrane 16, the diffusion layer 17 and the adsorption layer 18.

[0036] Although the present application has been described with reference to the embodiments above, various improvements can be made and equivalent substitutions can be made to the components without departing from the scope of the present application. In particular, as long as there is no structural conflict, each feature in the embodiments disclosed in the present application can be combined with each other in any manner, and the combinations are not exhaustively described in the present specification only for the consideration of omitting the length and saving the resources. Therefore, the present application is not limited to the specific embodiments disclosed herein, but includes all the technical solutions falling within the scope of the claims.

Claims

1. A diffusive gradient thin-film enclosure, characterized by, The utility model relates to a sampler, which comprises a sampler shell assembly, an auxiliary assembly and a separation assembly. The sampler shell assembly comprises a base (11), a threaded column (12) fixed on the base (11), a protective cover (13) matched with the threaded column (12), a conical cover (14) connected with the protective cover (13), a filter membrane (16) arranged between the threaded column (12) and the protective cover (13), a diffusion layer (17) and an adsorption layer (18).

2. A diffusive gradient membrane housing according to claim 1, wherein, The filter membrane (16), the diffusion layer (17) and the adsorption layer (18) are mutually adhered, and the filter membrane (16), the diffusion layer (17) and the adsorption layer (18) are compressed by the conical cover (14).

3. A diffusive gradient membrane housing according to claim 2, wherein, The base (11), the threaded column (12), the protective cover (13) and the conical cover (14) are of the same color, and the color is any one.

4. A diffusive gradient membrane housing according to claim 3, wherein, The auxiliary assembly further comprises a circular plate (23) connected to the top end of the spring (22), and the diameter of the circular plate (23) is the same as that of the filter membrane (16), the diffusion layer (17) and the adsorption layer (18).

5. A diffusive gradient thin-film enclosure according to claim 4, wherein, The separation assembly comprises a threaded ring (31) fixed on the bottom surface of the conical cover (14) and a threaded notch (32) opened on the top surface of the protective cover (13).

6. A diffusive gradient membrane housing according to claim 5, wherein, The base (11) is octagonal.

7. A diffusive gradient thin-film enclosure according to claim 1, wherein, ​

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