Adsorption film fixing device and adsorption film assembly

Abstract

The utility model relates to the technical field of water body detection, and provides a fixing device of an adsorption film and an adsorption film component, the fixing device of the adsorption film comprises an upper pressing sheet and a lower pressing sheet, the upper pressing sheet is provided with a first through hole, the lower pressing sheet is provided with a second through hole, the upper pressing sheet is pressed on the lower pressing sheet, and the first through hole and the second through hole are oppositely arranged; the upper pressing sheet and the lower pressing sheet are used for fixing the adsorption film between the first through hole and the second through hole so as to extrude and flatten the adsorption film; a positioning structure and a clamping structure are arranged between the upper pressing sheet and the lower pressing sheet, and the positioning structure and the clamping structure are arranged at an interval; the positioning structure is used for limiting the upper pressing piece and the lower pressing piece, and the clamping structure is used for buckling and fixing the upper pressing piece and the lower pressing piece. According to the fixing device for the adsorption film, the adsorption film can be flattened and fixed, and the fixing device can be mounted at a certain characteristic position for fixed-point adsorption in the detection process, so that the fixing device is better attached to a detection probe, the adsorption effect is ensured, and the detection accuracy is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of water body detection, in particular to a fixing device for an adsorption film and an adsorption film component. Background Art

[0002] With the rapid development of the global economy and the rise of industrialization, the demand for water resources is increasing, but water pollution is also becoming increasingly serious. Among the many water pollutants, heavy metal pollution accounts for a large proportion. The frequent occurrence of water pollution accidents caused by heavy metals and other toxic substances poses a direct threat to drinking water safety in the basin and social production. Therefore, heavy metal detection in surface water is extremely important.

[0003] Current research on heavy metal detection in water using adsorption membranes (such as activated carbon and alumina) primarily involves placing the membrane in the water to be tested, shaking or stirring it, then rinsing the membrane surface with pure water. Finally, the membrane, enriched with the target ions, is placed in a specialized testing instrument for testing and obtaining relevant data. However, in practice, the irregular morphology of the adsorption membrane makes the adsorption process difficult to control, and the adsorption effect cannot be guaranteed. Utility Model Content

[0004] The utility model provides an adsorption film fixing device and an adsorption film assembly, which are used to solve the problems in the prior art that the adsorption film has an irregular shape and is difficult to control the adsorption process and ensure the adsorption effect.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the utility model provides a fixing device for an adsorption film, comprising: an upper pressing sheet and a lower pressing sheet;

[0007] The upper pressing plate has a first through hole, the lower pressing plate has a second through hole, the upper pressing plate is pressed on the lower pressing plate, and the first through hole and the second through hole are arranged opposite to each other;

[0008] The upper pressing plate and the lower pressing plate are used to fix the adsorption film between the first through hole and the second through hole to squeeze the adsorption film flat;

[0009] A positioning structure and a locking structure are provided between the upper pressing plate and the lower pressing plate, and the positioning structure and the locking structure are arranged at intervals; the positioning structure is used to limit the upper pressing plate and the lower pressing plate, and the locking structure is used to buckle and fix the upper pressing plate and the lower pressing plate.

[0010] According to the fixing device of an adsorption film provided by the utility model, the positioning structure includes a positioning hole and a positioning column;

[0011] One of the upper pressing plate and the lower pressing plate is provided with a positioning hole, and the other is provided with a positioning column;

[0012] The positioning post is inserted into the positioning hole.

[0013] According to the fixing device of an adsorption film provided by the utility model, the engaging structure includes a card interface and a card hook;

[0014] One of the upper pressing plate and the lower pressing plate is provided with a card interface, and the other is provided with a card hook;

[0015] The card hook is arranged in the card interface.

[0016] According to the fixing device of the adsorption film provided by the utility model, the card interface and the card hook are provided in plurality;

[0017] A plurality of the card interfaces and the card hooks are arranged at intervals along the upper pressing plate or the lower pressing plate.

[0018] According to the fixing device for an adsorption film provided by the utility model, a setback groove is provided on the side of the upper pressing plate facing away from the lower pressing plate;

[0019] The recessed groove is communicated with the first through hole, and the center of the recessed groove and the center of the first through hole are coincident.

[0020] According to the fixing device of an adsorption film provided by the utility model, the upper pressing sheet includes: a pressing sheet body and a handle;

[0021] The handle is provided on one side of the tablet pressing body, and the handle is used for holding the tablet pressing body.

[0022] According to the fixing device for an adsorption film provided by the utility model, the handle includes a connecting portion and a gripping portion;

[0023] The holding portion is arranged in a circular shape, and two ends of the connecting portion are respectively connected to the tablet pressing body and the holding portion.

[0024] According to the fixing device for an adsorption film provided by the utility model, an inner chamfer is provided on a side of the lower pressing plate close to the upper pressing plate;

[0025] The inner chamfer is provided between the positioning structure, the engaging structure and the second through hole. The inner chamfer forms an accommodating space between the upper pressing plate and the lower pressing plate, and the accommodating space is used to accommodate the adsorption film.

[0026] According to the fixing device for an adsorption film provided by the utility model, a digital code is provided on the side of the lower pressing plate facing away from the upper pressing plate;

[0027] And / or, a QR code is provided on a side of the lower pressing sheet facing away from the upper pressing sheet.

[0028] In a second aspect, the present invention provides an adsorption membrane assembly, comprising: an adsorption membrane and a fixing device for the adsorption membrane as described above;

[0029] The adsorption membrane is clamped in the adsorption membrane fixing device to form a regular adsorption membrane assembly.

[0030] The fixing device and adsorption film assembly provided by the utility model are provided with an upper pressing plate and a lower pressing plate, the upper pressing plate has a first through hole, and the lower pressing plate has a second through hole. The upper pressing plate and the lower pressing plate can fix the adsorption film between the first through hole and the second through hole, so that the adsorption film is squeezed flat, and the positioning structure ensures that the upper pressing plate and the lower pressing plate are limited along the bonding surface direction, and the locking structure ensures that the upper pressing plate and the lower pressing plate are bonded and fixed along the height direction, so that the upper pressing plate and the lower pressing plate can flatten and fix the adsorption film, and can install the fixing device to a certain characteristic position for fixed-point adsorption during the detection process, and better fit the detection probe, thereby ensuring the adsorption effect and thus ensuring the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a three-dimensional structural diagram of the adsorption membrane provided by the utility model.

[0033] Figure 2 This is an exploded view of the first adsorption membrane component provided by the utility model.

[0034] Figure 3 This is a three-dimensional structural diagram of the second adsorption membrane component provided by the utility model.

[0035] Figure 4 This is a three-dimensional structural diagram of the first adsorption film fixing device provided by the utility model.

[0036] Figure 5 It is a schematic diagram of the adsorption membrane assembly provided by the utility model absorbing water ions.

[0037] Figure 6 It is a schematic diagram of detection using the adsorption membrane assembly provided by the present invention.

[0038] Figure 7This is a schematic diagram of placing the first adsorption membrane assembly and the second adsorption membrane assembly provided by the present invention on a tray.

[0039] Reference numerals:

[0040] 1. Fixing device; 11. Upper pressing plate; 12. Lower pressing plate; 111. First through hole; 112. Positioning post; 113. Hook; 114. Recessed groove; 115. Pressing plate body; 116. Handle; 121. Second through hole; 122. Positioning hole; 123. Card interface; 124. Inner chamfer; 125. Digital code; 126. QR code; 1161. Connecting portion; 1162. Grip;

[0041] 2. Adsorption film; 3. Upper cover; 4. Container; 5. Probe;

[0042] 6. Tray; 61. Support slot;

[0043] 100. Adsorption membrane assembly. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0045] The following combination Figures 1 to 7 , the adsorption membrane fixing device and the adsorption membrane assembly provided by the embodiment of the present invention are described in detail through specific embodiments and their application scenarios.

[0046] First, as Figure 1 and Figure 2 As shown, this embodiment provides a fixing device 1 for an adsorption film, comprising an upper pressing plate 11 and a lower pressing plate 12 .

[0047] The upper pressing plate 11 has a first through hole 111 , and the lower pressing plate 12 has a second through hole 121 . The upper pressing plate 11 is pressed onto the lower pressing plate 12 , and the first through hole 111 and the second through hole 121 are arranged opposite to each other.

[0048] The upper pressing plate 11 and the lower pressing plate 12 are used to fix the adsorption membrane 2 between the first through hole 111 and the second through hole 121 to squeeze the adsorption membrane 2 flat.

[0049] A positioning structure and a locking structure are provided between the upper pressing plate 11 and the lower pressing plate 12, and the positioning structure and the locking structure are arranged at intervals; the positioning structure is used to limit the upper pressing plate 11 and the lower pressing plate 12, and the locking structure is used to buckle and fix the upper pressing plate 11 and the lower pressing plate 12.

[0050] It is understandable that the adsorption membrane 2 is made of elastic material, and is irregular and twisted in its initial state, and cannot be fixed in position when absorbing ions in water.

[0051] The upper pressing plate 11 and the lower pressing plate 12 of this embodiment are both square in design, the first through hole 111 and the second through hole 121 are circular holes, and the centers of the first through hole 111 and the second through hole 121 coincide with the centers of the first pressing plate and the second pressing plate. When performing adsorption detection, the adsorption film 2 is clamped between the upper pressing plate 11 and the lower pressing plate 12. The upper pressing plate 11 and the lower pressing plate 12 squeeze the adsorption film 2 from both sides so that the adsorption film 2 is flattened into a plane. The adsorption film 2 is exposed in the first through hole 111 and the second through hole 121, which facilitates the probe 5 to detect the adsorption film 2.

[0052] Furthermore, the positioning structure arranged between the upper pressing plate 11 and the lower pressing plate 12 can limit the relative position between the upper pressing plate 11 and the lower pressing plate 12, preventing the upper pressing plate 11 and the lower pressing plate 12 from moving relative to each other along the bonding surface, so that the upper pressing plate 11 and the lower pressing plate 12 have a better clamping effect on the adsorption film 2.

[0053] Specifically, the upper pressing plate 11 and the lower pressing plate 12 can be positioned by bolts and nuts, or by keyways and keys.

[0054] At the same time, the locking structure arranged between the upper pressing plate 11 and the lower pressing plate 12 can ensure that the upper pressing plate 11 and the lower pressing plate 12 are tightly fitted and fixed, preventing the upper pressing plate 11 and the lower pressing plate 12 from moving up and down, ensuring that the adsorption film 2 can be stably clamped between the upper pressing plate 11 and the lower pressing plate 12 without slipping, and also avoiding the bending and warping of the adsorption film 2 caused by the loosening of the upper pressing plate 11 and the lower pressing plate 12.

[0055] Specifically, the snap-fit ​​structure may be provided with a magnetic member for snap-fit ​​cooperation, or the snap-fitting of the upper pressing plate 11 and the lower pressing plate 12 may be achieved through elastic deformation of an elastic member.

[0056] The fixing device 1 for the adsorption film provided by the present invention is provided with an upper pressing plate 11 and a lower pressing plate 12. The upper pressing plate 11 has a first through hole 111, and the lower pressing plate 12 has a second through hole 121. The upper pressing plate 11 and the lower pressing plate 12 can fix the adsorption film 2 between the first through hole 111 and the second through hole 121, so that the adsorption film 2 is squeezed flat, and the positioning structure ensures that the upper pressing plate 11 and the lower pressing plate 12 are limited in the direction of the fitting surface, and the locking structure ensures that the upper pressing plate 11 and the lower pressing plate 12 are fitted and fixed in the height direction, so that the upper pressing plate 11 and the lower pressing plate 12 can flatten and fix the adsorption film 2, and can install the fixing device 1 to a certain specific position for fixed-point adsorption during the detection process, and better fit the detection probe 5, thereby ensuring the adsorption effect and thus ensuring the accuracy of the detection.

[0057] In some embodiments, as Figure 2 As shown, the positioning structure of this embodiment includes a positioning hole 122 and a positioning column 112 .

[0058] One of the upper pressing plate 11 and the lower pressing plate 12 is provided with a positioning hole 122 , and the other is provided with a positioning post 112 .

[0059] The positioning post 112 is inserted into the positioning hole 122 .

[0060] It can be understood that in this embodiment, the positioning column 112 is set on the upper pressing plate 11, and the positioning hole 122 is set on the lower pressing plate 12. The positioning column 112 is cylindrical and has a conical head. The positioning hole 122 is a circular hole. During the installation process of the upper pressing plate 11 and the lower pressing plate 12, the conical head has a guiding function, guiding the positioning column 112 towards the insertion into the positioning hole 122.

[0061] Furthermore, this embodiment is provided with four positioning posts 112 and four positioning holes 122 . The four positioning posts 112 are distributed at the four corners of the upper pressing plate 11 , and the four positioning holes 122 are distributed at the four corners of the lower pressing plate 12 .

[0062] This embodiment sets the positioning structure as a positioning hole 122 and a positioning column 112, so that the movement between the upper pressing plate 11 and the lower pressing plate 12 along the bonding surface can be limited by plugging the positioning column 112 into the positioning hole 122. The structure is simple and easy to process, and the limiting function is achieved.

[0063] In some embodiments, as Figure 2 As shown, the locking structure of this embodiment includes a locking interface 123 and a locking hook 113 .

[0064] One of the upper pressing plate 11 and the lower pressing plate 12 is provided with a card interface 123 , and the other is provided with a card hook 113 .

[0065] The hook 113 is locked in the card interface 123 .

[0066] It is understandable that in this embodiment, the hook 113 is set on the upper pressing plate 11, and the card interface 123 is set on the lower pressing plate 12. The upper pressing plate 11 and the lower pressing plate 12 are firmly installed by the card hook 113 and the card interface 123. The hook 113 is a triangular prism structure, which extends along the direction of the side length of the upper pressing plate 11. The card interface 123 includes a prismatic protrusion, and the protrusion and the rest of the card connection portion form a recessed portion. The upper pressing plate 11 and the lower pressing plate 12 are assembled. When the upper pressing plate 11 is in the vertical direction, the upper pressing plate 11 and the lower pressing plate 12 are in the vertical direction, and the upper pressing plate 11 and the lower pressing plate 12 are in the vertical direction, so the upper pressing plate 11 and the lower pressing plate 12 are in the vertical direction. The upper pressing plate 11 and the lower pressing plate 12 are in the vertical direction, and the upper pressing plate 11 and the lower pressing plate 12 can form a stable clamping force on the adsorption film 2.

[0067] In some embodiments, as Figure 2 As shown, in this embodiment, there are multiple card interfaces 123 and multiple card hooks 113.

[0068] A plurality of card interfaces 123 and card hooks 113 are arranged at intervals along the upper pressing plate 11 or the lower pressing plate 12 .

[0069] It is understandable that in this embodiment, there are four card interfaces 123 and four card hooks 113 respectively. The four card interfaces 123 are respectively arranged on the four sides of the lower pressing plate 12, and the four card hooks 113 are respectively arranged on the four sides of the upper pressing plate 11 and close to one side of the lower pressing plate 12.

[0070] This embodiment is provided with a plurality of card interfaces 123 and card hooks 113. Through the engagement of the upper pressing plate 11 and the lower pressing plate 12 at multiple positions, the four edges of the upper pressing plate 11 and the lower pressing plate 12 are firmly engaged, thereby making the clamping force for the adsorption film 2 clamped between the upper pressing plate 11 and the lower pressing plate 12 more uniform, and more conducive to the reliability of clamping the adsorption film 2.

[0071] In some embodiments, as Figure 2 and Figure 3 As shown, in this embodiment, a setback groove 114 is provided on the side of the upper pressing plate 11 facing away from the lower pressing plate 12 .

[0072] The recessed groove 114 is communicated with the first through hole 111 , and the centers of the recessed groove 114 and the first through hole 111 are coincident.

[0073] It can be understood that the retreat groove 114 of this embodiment is arranged in a circular shape, and the center of the retreat groove 114 coincides with the center of the first through hole 111. Since the diameter of the retreat groove 114 is larger than the diameter of the first through hole 111, compared with the lower pressing plate 12, the path of the outer side of the upper pressing plate 11 close to the adsorption film 2 is wider, which is more conducive to the detection of the adsorption film 2.

[0074] When detecting the adsorption film 2, the probe 5 can extend into the retreat groove 114 from the outside of the upper pressing plate 11, so that the distance between the probe 5 and the adsorption film 2 can be smaller, and the probe 5 is closer to the adsorption film 2, which is beneficial to the accuracy of the probe 5's detection of the adsorption film 2.

[0075] In some embodiments, as Figure 3 As shown, the upper pressing piece 11 of this embodiment includes: a pressing piece body 115 and a handle 116.

[0076] The handle 116 is provided on one side of the tablet pressing body 115 , and the handle 116 is used to hold the tablet pressing body 115 .

[0077] It is understandable that when the handle 116 is used to hold the tablet body 115, if the solution being tested contains corrosive substances that can easily cause harm to the human body, the handle 116 can isolate the harmful liquid on the tablet body 115, thereby ensuring the safety of the operator. Moreover, when the machine is automatically holding the tablet, the handle 116 can also isolate the corrosive substances from corroding the holding machine.

[0078] In some embodiments, as Figure 3 As shown, the handle 116 of this embodiment includes a connecting portion 1161 and a gripping portion 1162 .

[0079] The gripping portion 1162 is circular in shape, and two ends of the connecting portion 1161 are connected to the tablet body 115 and the gripping portion 1162 respectively.

[0080] It is understandable that the circular gripping portion 1162 is more convenient for grasping the handle 116, and the length of the connecting portion 1161 can be set to different types according to the scene requirements. The two sides of the connecting portion 1161 of this embodiment are arranged in an arc shape, which ensures the beautiful appearance and can also achieve a smooth transition between the connecting portion 1161 and the gripping portion 1162, ensuring the even distribution of stress.

[0081] In some embodiments, as Figure 2 、 Figure 3 and Figure 6 As shown, in this embodiment, an inner chamfer 124 is provided on a side of the lower pressing plate 12 close to the upper pressing plate 11 .

[0082] The inner chamfer 124 is provided between the positioning structure, the engaging structure and the second through hole 121 . The inner chamfer 124 forms an accommodating space between the upper pressing plate 11 and the lower pressing plate 12 . The accommodating space is used to accommodate the adsorption membrane 2 .

[0083] It can be understood that the setting of the inner chamfer 124 allows the lower pressing plate 12 and the upper pressing plate 11 to be installed and fitted together to form a smaller accommodating space, in which the adsorption membrane 2 is accommodated. The accommodating space can limit the adsorption membrane 2, ensuring that the adsorption membrane 2 is flattened and fixed between the upper pressing plate 11 and the lower pressing plate 12, thereby ensuring the adsorption effect on ions in the water body.

[0084] In some embodiments, as Figure 4 As shown, in this embodiment, a digital code 125 is provided on the side of the lower pressing plate 12 facing away from the upper pressing plate 11 .

[0085] It can be understood that the digital code 125 of this embodiment is used to match the code of the water body to be detected. When performing batch water ion detection, ion detection of multiple different water bodies can be performed at the same time. It is only necessary to match the digital code 125 on the lower pressing plate 12 with the code of the water body, which facilitates the management and differentiation of large quantities of adsorption membranes 2 and improves the efficiency of large-scale water body detection.

[0086] Specifically, the digital code 125 of this embodiment can be a laser-marked digital code.

[0087] In some embodiments, as Figure 4 As shown, a two-dimensional code 126 is provided on the side of the lower pressing plate 12 facing away from the upper pressing plate 11 in this embodiment.

[0088] It is understandable that the QR code 126 set on the lower pressing plate 12 can match the QR code of the water body. When performing automatic detection of water ions in batches, a barcode scanner can be used to automatically obtain the QR code 126 on the fixing device 1, thereby tracing the QR code of the detected water body, facilitating the automated management and differentiation of large quantities of adsorption membranes 2, and improving the degree of automation of information acquisition of the adsorption membrane 2.

[0089] Optionally, the fixing device 1 may be set to different colors, and different colors may be selected to correspond to different water bodies to prevent confusion of water body characteristics.

[0090] In a second aspect, in some embodiments, as Figure 2 and Figure 3 As shown, this embodiment provides an adsorption membrane assembly 100, comprising: an adsorption membrane 2 and the above-mentioned adsorption membrane fixing device 1.

[0091] The adsorption membrane 2 is clamped in the adsorption membrane fixing device 1 to form a regular adsorption membrane assembly 100 .

[0092] Specifically, since the adsorption membrane assembly 100 includes an adsorption membrane fixing device 1, and the specific structure of the adsorption membrane fixing device 1 refers to the above embodiment, the adsorption membrane assembly 100 shown in this embodiment includes all the technical solutions of the above embodiment. Therefore, it has at least all the beneficial effects achieved by all the technical solutions of the above embodiment, which will not be repeated here.

[0093] It is understandable that the fixing device 1 is used to fix and flatten the adsorption membrane 2, and the adsorption membrane assembly 100 is installed at a specific position in the water body, such as Figure 5 As shown, the container 4 contains the water to be tested, and the upper cover 3 is provided with a mounting portion. The adsorption membrane assembly 100 is mounted on the mounting portion and fixedly connected. The upper cover 3 and the adsorption membrane assembly 100 are placed in the container 4, and the upper cover 3 and the container 4 are tightened. The adsorption membrane assembly 100 is fixed on the mounting portion. During the adsorption process, the adsorption membrane assembly 100 always adsorbs at a fixed position, which is conducive to ensuring the consistency of the adsorption effect. After the adsorption test is completed, the adsorption membrane assembly 100 is taken out of the container 4, and the fixing device 1 can be held to clean the adsorption membrane 2, ensuring the convenience of cleaning. Then, the adsorption membrane assembly 100 is tested, as shown in FIG. Figure 6 As shown, the probe 5 can extend into the recessed groove 114 of the upper pressing plate 11 and detect the adsorption film 2 with a small distance from the adsorption film 2, thereby ensuring the accuracy of the measurement result.

[0094] Further, if Figure 7 As shown, during the process of automated water ion detection, multiple adsorption membrane assemblies 100 can be uniformly placed in the supporting grooves 61 of the tray 6. The supporting grooves 61 are arranged at equal intervals, which makes it convenient for the robot to hold and scan the adsorption membrane assemblies 100, thereby improving the degree of automation of water ion detection and improving the efficiency of detection.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fixing device for an adsorption film, characterized in that: include: Upper and lower tablets; The upper pressing plate has a first through hole, the lower pressing plate has a second through hole, the upper pressing plate is pressed on the lower pressing plate, and the first through hole and the second through hole are arranged opposite to each other; The upper pressing plate and the lower pressing plate are used to fix the adsorption film between the first through hole and the second through hole to squeeze the adsorption film flat; A positioning structure and a locking structure are provided between the upper pressing plate and the lower pressing plate, and the positioning structure and the locking structure are arranged at intervals; the positioning structure is used to limit the upper pressing plate and the lower pressing plate, and the locking structure is used to buckle and fix the upper pressing plate and the lower pressing plate.

2. The fixing device for adsorption film according to claim 1, characterized in that: The positioning structure includes a positioning hole and a positioning column; One of the upper pressing plate and the lower pressing plate is provided with a positioning hole, and the other is provided with a positioning column; The positioning post is inserted into the positioning hole.

3. The fixing device for adsorption film according to claim 1, characterized in that: The snap-fit ​​structure includes a snap interface and a snap hook; One of the upper pressing plate and the lower pressing plate is provided with a card interface, and the other is provided with a card hook; The card hook is arranged in the card interface.

4. The fixing device for adsorption film according to claim 3, characterized in that: There are multiple card interfaces and multiple card hooks; A plurality of the card interfaces and the card hooks are arranged at intervals along the upper pressing plate or the lower pressing plate.

5. The fixing device for adsorption film according to claim 1, characterized in that: A setback groove is provided on the side of the upper pressing plate facing away from the lower pressing plate; The recessed groove is communicated with the first through hole, and the center of the recessed groove and the center of the first through hole are coincident.

6. The fixing device for adsorption film according to claim 1, characterized in that: The upper pressing tablet comprises: a pressing tablet body and a handle; The handle is provided on one side of the tablet pressing body, and the handle is used for holding the tablet pressing body.

7. The fixing device for adsorption film according to claim 6, characterized in that: The handle includes a connecting portion and a gripping portion; The holding portion is arranged in a circular shape, and two ends of the connecting portion are respectively connected to the tablet pressing body and the holding portion.

8. The fixing device for adsorption film according to claim 1, characterized in that: The lower pressing plate is provided with an inner chamfer on one side close to the upper pressing plate; The inner chamfer is provided between the positioning structure, the engaging structure and the second through hole. The inner chamfer forms an accommodating space between the upper pressing plate and the lower pressing plate, and the accommodating space is used to accommodate the adsorption film.

9. The device for fixing an adsorption film according to any one of claims 1 to 8, characterized in that: A digital code is provided on the side of the lower pressing plate facing away from the upper pressing plate; And / or, a QR code is provided on a side of the lower pressing sheet facing away from the upper pressing sheet.

10. An adsorption membrane assembly, characterized in that: include: An adsorption film and a fixing device for the adsorption film as claimed in any one of claims 1 to 9; The adsorption membrane is clamped in the adsorption membrane fixing device to form a regular adsorption membrane assembly.

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