Self-locking filter membrane encapsulation structure and usage method

Abstract

The present invention provides a self-locking filter membrane encapsulation structure and a usage method. The self-locking filter membrane encapsulation structure includes: an inner encapsulation ring, which includes an inner side edge of the inner encapsulation ring, an outer side edge of the inner encapsulation ring, and a vertical baffle of the inner encapsulation ring. A clamping portion is provided on the side surface of one end of the vertical baffle of the inner encapsulation ring close to the outer side edge of the inner encapsulation ring; an outer encapsulation ring, which includes an inner side edge of the outer encapsulation ring, a skirt of the outer encapsulation ring, and a limiting portion extending toward the center of the outer encapsulation ring at the other end of the skirt of the outer encapsulation ring. The present invention can change the way of replacing the wafer filter membrane, can complete self-locking during use without an additional locking mechanism, reduce the breakage and contamination of the wafer filter membrane during replacement, has a simple structure, is convenient for loading and unloading the filter membrane, has good sealing performance, and reduces the labor burden of the investigators.

Description

Technical Field

[0001] The present invention belongs to the technical field of water sample collection, and particularly relates to a self-locking filter membrane encapsulation structure and a usage method thereof. Background Art

[0002] With the development of biodiversity investigation and research, it is usually necessary to conduct large-scale and high-frequency metagenomic analysis of environmental DNA and microorganisms in water bodies, which requires large-scale filtration of water samples and high-frequency replacement of filter membranes. Different from ordinary filter membrane replacement scenarios, in environmental DNA sampling or microorganism sampling scenarios, it is also necessary to pay special attention to avoiding cross-contamination between samples and avoiding introducing new contamination during the operation process, so as to ensure the independence of samples and the accuracy of detection results.

[0003] In the past, the simple and direct method of replacing the filter membrane was to filter the water sample through a disc filter membrane, and then the experimenter manually opened the filter head and used clean tweezers to take out the filter membrane containing the sample. Subsequently, a new disc filter membrane was clamped with clean tweezers and replaced, and finally the filter head was manually reinstalled. However, since the current disc filter membrane itself does not have an encapsulation and fixing device, manual replacement of the filter membrane is required, which is not conducive to automated sampling filtration, nor to standardized long-term continuous sampling or on-line continuous monitoring activities. Moreover, different experimenters may introduce errors due to different operation methods, and the filter membrane is often damaged due to excessive force when replacing the filter membrane, wasting a lot of time and labor, which is not conducive to high-frequency sampling. In addition, it is easy to introduce contamination and cause deviation of the sample investigation results. The scheme of using glue to adhere and fix the filter membrane in other fields has the problem that it is not convenient to remove the filter membrane, which is not conducive to subsequent separation and extraction operations. In addition, other types of schemes for loading and fixing the filter membrane using an additional locking mechanism cannot form self-locking when subjected to longitudinal or lateral forces. On the one hand, it is not conducive to sealing and fixing, and on the other hand, it requires additional labor to apply or release the additional locking mechanism.

[0004] That is to say, how to provide a filter membrane encapsulation and fixing device, which can improve the replacement speed while ensuring good sealing performance, complete self-locking during use without an additional locking mechanism, reduce errors, breakage and contamination during the replacement process, and thus improve the replacement efficiency of the filter membrane, so as to realize long-term high-frequency automated sampling of environmental DNA or microorganism samples in water samples, while reducing the labor burden of investigators and improving the accuracy of investigation results, is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] In view of the above problems and deficiencies in the prior art, a first aspect of the present invention provides a self-locking filter membrane encapsulation structure, and the self-locking filter membrane encapsulation structure includes: an inner encapsulation ring; the inner encapsulation ring includes an inner side edge of the inner encapsulation ring extending towards the center of the inner encapsulation ring and an outer side edge of the inner encapsulation ring connected to the inner side edge of the inner encapsulation ring and extending in the opposite direction to the center direction of the inner encapsulation ring, and a downward-extending vertical block of the inner encapsulation ring provided between the inner side edge of the inner encapsulation ring and the outer side edge of the inner encapsulation ring; a clamping portion is provided on a side surface of one end of the vertical block of the inner encapsulation ring close to the outer side edge of the inner encapsulation ring; an outer encapsulation ring; the outer encapsulation ring includes an inner side edge of the outer encapsulation ring extending towards the center of the outer encapsulation ring, a skirt of the outer encapsulation ring wrapping the vertical block of the inner encapsulation ring and having one end connected to one end of the inner side edge of the outer encapsulation ring, and a limiting portion provided at the other end of the skirt of the outer encapsulation ring and extending towards the center direction of the outer encapsulation ring; wherein, the outer encapsulation ring surrounds the periphery of the inner encapsulation ring, a filter plate is placed inside the inner encapsulation ring, and the outer periphery of one side of the filter plate is attached to the inner side edge of the outer encapsulation ring. When an axial pressure perpendicular to the filter plate is applied to the filter plate, the outer periphery of one side of the filter plate squeezes the inner side edge of the outer encapsulation ring, so that the clamping portion is engaged with the limiting portion.

[0006] In the first aspect, the number of the vertical blocks of the inner encapsulation ring and the number of the skirts of the outer encapsulation ring are both N, and N is a positive integer greater than or equal to 1. One skirt of the outer encapsulation ring is provided between any two of the vertical blocks of the inner encapsulation ring.

[0007] In the first aspect, the vertical blocks of the inner encapsulation ring and the skirts of the outer encapsulation ring are made of silica gel or rubber or fluororubber materials.

[0008] In the first aspect, the length of the vertical blocks of the inner encapsulation ring is the same as the length of the skirts of the outer encapsulation ring, and the other end of the skirt of the outer encapsulation ring provided with the limiting portion extends to abut against the inner side of the free end of the outer side edge of the inner encapsulation ring.

[0009] In the first aspect, a limiting protrusion is provided on the outer side of the skirt of the outer encapsulation ring.

[0010] In the first aspect, M upper annular protrusions are provided on the upper surface of the inner side edge of the inner encapsulation ring and the upper surface of the outer side edge of the inner encapsulation ring, and M lower annular protrusions with the same number as the upper annular protrusions are provided on the lower surface of the inner side edge of the outer encapsulation ring; when any two of the self-locking filter membrane encapsulation structures are stacked, the M upper annular protrusions are in one-to-one contact with the M lower annular protrusions to form an isolation area, and M is a positive integer greater than or equal to 1.

[0011] In the first aspect, the filter plate is a porous plate made of a rigid material.

[0012] In a first aspect, the snap - connection part is a groove, the limiting part is a protrusion, and the groove is snap - connected to the protrusion; or, the snap - connection part is a protrusion, the limiting part is a groove, and the groove is snap - connected to the protrusion.

[0013] A second aspect of the present application provides a method of using a self - locking filter membrane encapsulation structure for the above - mentioned self - locking filter membrane encapsulation structure, which includes the following steps: Assembling the filter membrane, where assembling the filter membrane includes: placing the filter membrane close to the inner side of the inner edge of the inner encapsulation ring and laying it flat in the area surrounded by the vertical barriers of the inner encapsulation ring; laying the filter plate flat on the filter membrane; vertically covering the outer encapsulation ring, surrounding the outer encapsulation ring around the periphery of the inner encapsulation ring, and fitting and pressing the outer periphery of one side of the filter plate against the inner edge of the outer encapsulation ring; embedding the limiting part of the skirt of the outer encapsulation ring into the snap - connection part of the vertical barrier of the inner encapsulation ring; completing the assembly; Automatic feeding, where automatic feeding includes: placing the assembled self - locking filter membrane encapsulation structure into the sampling area; Sampling, where sampling includes: suction filtration, clamping the self - locking filter membrane encapsulation structure with the filter head and the base, and making the fluid flow from the filter membrane to the filter plate; The mutual extrusion between the filter head and the base and the fluid exert a longitudinal pressure and / or a lateral pressure on the self - locking filter membrane encapsulation structure. In the compressed state, the snap - connection part and the limiting part are mutually extruded, increasing the self - locking strength of the self - locking filter membrane encapsulation structure; Stopping suction filtration, taking out the self - locking filter membrane encapsulation structure to stop applying the longitudinal pressure and / or the lateral pressure on the self - locking filter membrane encapsulation structure, and the mutual acting force between the snap - connection part and the limiting part is released, weakening the self - locking strength of the self - locking filter membrane encapsulation structure; Drying and storing, for drying and storing the filter membrane; Disassembling the filter membrane, where disassembling the filter membrane includes: firmly pinching or clamping the end of the outer side of the inner encapsulation ring and lifting it upwards; pulling out the inner encapsulation ring to take out the filter membrane or taking out the filter membrane and the filter plate together.

[0014] In a second aspect, the drying and storing includes: putting the self - locking filter membrane encapsulation structure into a self - sealing bag with a relatively thick and rigid bag wall; putting solid desiccant into the self - sealing bag and placing it outside the filter plate (11); sealing the self - sealing bag for storage.

[0015] Beneficial effects: In the actual working process of the self-locking filter membrane encapsulation structure provided by the present invention, the inner encapsulation ring, the outer encapsulation ring, the filter plate and the filter membrane cooperate with each other. Through the self-locking connection between the clamping portion on the vertical baffle of the inner encapsulation ring and the limiting portion on the skirt of the outer encapsulation ring, a self-locking structure is formed. Without the need for an additional locking mechanism, both longitudinal pressure and lateral pressure can make it enter a self-locking state where the tighter it is pressed, the tighter it becomes. The structure is simple, which is beneficial to the sealing and protection of the filter membrane. After encapsulation, an independent self-locking encapsulation ring with a certain rigidity can be formed, which can not only make the automated feeding position more accurate, but also ensure the independence of the sample results, facilitating the development of scientific research. Moreover, the new and old filter membranes are separated by the encapsulation ring, which not only avoids cross-contamination between the new and old filter membranes, but also maximally avoids cross-contamination with external parts. When the external pressure is released, the strength of this self-locking also weakens accordingly, and it can be easily opened. It can be opened and closed by manual pulling out or pressing, which is convenient for loading the filter membrane in the early stage and also beneficial for taking out the filter membrane in the later stage, and the filter membrane will not be damaged due to excessive locking strength or difficult assembly. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the self-locking filter membrane encapsulation structure provided by the present invention.

[0018] Figure 2 It is a schematic diagram of the method for releasing the encapsulation of the self-locking filter membrane encapsulation structure provided by the present invention

[0019] Figure 3 It is a schematic diagram of the self-locking realized by the longitudinal force on the self-locking filter membrane encapsulation structure provided by the present invention.

[0020] Figure 4 It is a schematic diagram of the self-locking realized by the lateral force on the self-locking filter membrane encapsulation structure provided by the present invention.

[0021] Figure 5 It is a 3D structure diagram of the self-locking filter membrane encapsulation structure with an upper annular protrusion and a lower annular protrusion provided by the present invention.

[0022] Figure 6 It is a schematic diagram of the structure of the self-locking filter membrane encapsulation structure with an upper annular protrusion and a lower annular protrusion provided by the present invention.

[0023] Figure 7It is a superimposed schematic diagram of the self-locking filter membrane packaging structure with an upper annular protrusion and a lower annular protrusion provided by the present invention.

[0024] Figure 8 It is a 3D structure diagram of the self-locking filter membrane packaging structure with a limiting protrusion provided by the present invention.

[0025] Figure 9 It is a structural schematic diagram of the self-locking filter membrane packaging structure with a limiting protrusion provided by the present invention.

[0026] Figure 10 It is a structural schematic diagram of the four-row frame provided by the present invention.

[0027] Explanation of reference numerals:

[0028] 1. Inner packaging ring;

[0029] 2. Inner side edge of the inner packaging ring;

[0030] 3. Outer side edge of the inner packaging ring;

[0031] 4. Vertical bar of the inner packaging ring;

[0032] 5. Clamping part;

[0033] 6. Outer packaging ring;

[0034] 7. Inner side edge of the outer packaging ring;

[0035] 8. Skirt of the outer packaging ring;

[0036] 9. Limiting part;

[0037] 10. Filter membrane;

[0038] 11. Filter plate;

[0039] 12. Upper annular protrusion;

[0040] 13. Limiting protrusion;

[0041] 14. Self-locking packaging ring;

[0042] 15. Four-row frame;

[0043] 16. Self-locking surface;

[0044] 17. Partition board;

[0045] 18. Isolation area;

[0046] 19. Lower annular protrusion. Detailed implementation manners

[0047] The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention fall within the scope of protection of the present invention.

[0048] Meanwhile, throughout the specification, unless otherwise specifically stated, the terms used herein should be understood as having the meanings as commonly used in the art. Therefore, unless otherwise defined, all technical and scientific terms used herein have the same meanings as generally understood by those skilled in the art to which the present invention pertains. In case of any contradiction, this specification shall prevail.

[0049] Embodiment 1:

[0050] As Figure 1-2 shown, Embodiment 1 of the present invention provides a self-locking filter membrane encapsulation structure, and the self-locking filter membrane encapsulation structure includes: an inner encapsulation ring 1; the inner encapsulation ring 1 includes an inner encapsulation ring inner side 2 extending towards the center of the inner encapsulation ring 1 and an inner encapsulation ring outer side 3 connected to the inner encapsulation ring inner side 2 and extending in the opposite direction of the center of the inner encapsulation ring 1, and a downward-extending inner encapsulation ring vertical stop 4 disposed between the inner encapsulation ring inner side 2 and the inner encapsulation ring outer side 3; a clamping portion 5 is disposed on the side surface of one end of the inner encapsulation ring vertical stop 4 close to the inner encapsulation ring outer side 3; an outer encapsulation ring 6; the outer encapsulation ring 6 surrounds the periphery of the inner encapsulation ring 1; the outer encapsulation ring 6 includes an outer encapsulation ring inner side 7 extending towards the center of the outer encapsulation ring 6, an outer encapsulation ring skirt 8 wrapping the inner encapsulation ring vertical stop 4 and having one end connected to one end of the outer encapsulation ring inner side 7, and a limiting portion 9 disposed at the other end of the outer encapsulation ring skirt 8 and extending towards the center of the outer encapsulation ring 6; wherein, the outer encapsulation ring 6 surrounds the periphery of the inner encapsulation ring 1, a filter plate 11 is placed inside the inner encapsulation ring 1, and the outer periphery of one side of the filter plate 11 is in contact with the outer encapsulation ring inner side 7. When an axial pressure perpendicular to the filter plate is applied to the filter plate, the outer periphery of one side of the filter plate squeezes the outer encapsulation ring inner side 7, so that the clamping portion 5 is engaged with the limiting portion 9.

[0051] The self-locking filter membrane encapsulation structure provided by the present invention, during the actual working process, the inner encapsulation ring 1, the outer encapsulation ring 6 cooperate with the filter plate 11 and the filter membrane 10. Through the self-locking connection between the clamping portion 5 on the vertical baffle 4 of the inner encapsulation ring and the limiting portion 9 on the skirt 8 of the outer encapsulation ring, a self-locking structure is formed. Without the need for an additional locking mechanism, both the longitudinal pressure and the lateral pressure can make the self-locking surface 16 press tighter. The structure is simple, which is beneficial to the sealing and protection of the filter membrane 10. After encapsulation, an independent self-locking encapsulation ring 14 with a certain rigidity can be formed, which can not only make the automatic feeding position more accurate, but also ensure the independence of the sample results, which is beneficial to the development of scientific investigation and research. Moreover, the new and old filter membranes are separated by the encapsulation ring, which not only avoids cross-contamination between the new and old filter membranes, but also maximally avoids cross-contamination with external parts. When the external pressure is released, the strength of this self-locking also weakens accordingly, and it can be easily opened. It can be opened and closed by manual pulling out or pressing, which is convenient for loading the filter membrane 10 in the early stage and is also beneficial to taking out the filter membrane 10 in the later stage, and the filter membrane 10 will not be damaged due to excessive locking strength or difficult assembly.

[0052] In some possible embodiments, the number of the vertical baffles 4 of the inner encapsulation ring and the number of the skirts 8 of the outer encapsulation ring are both N, where N is a positive integer greater than or equal to 1, and one skirt 8 of the outer encapsulation ring is arranged between any two vertical baffles 4 of the inner encapsulation ring.

[0053] This is because the number of the vertical baffles 4 of the inner encapsulation ring and the number of the skirts 8 of the outer encapsulation ring are both N, where N is a positive integer greater than or equal to 1, and one skirt 8 of the outer encapsulation ring is arranged between any two vertical baffles 4 of the inner encapsulation ring, so that the vertical baffles 4 of the inner encapsulation ring and the skirts 8 of the outer encapsulation ring are embedded and wrapped with each other, enhancing the sealing performance of the filter membrane encapsulation structure.

[0054] In some possible embodiments, the vertical baffle 4 of the inner encapsulation ring and the skirt 8 of the outer encapsulation ring are made of silica gel or rubber or fluororubber materials.

[0055] This is because the inner encapsulation ring vertical rib 4 and the outer encapsulation ring skirt 8 made of silica gel, rubber or fluororubber material have both a certain rigidity to achieve a better support effect and a certain elasticity to achieve a better self-locking effect and sealing effect. And the elastic deformation makes the outer encapsulation ring skirt 8 expand, and it can easily buckle onto the inner encapsulation ring vertical rib 4. After buckling onto the inner encapsulation ring vertical rib 4, the elastic deformation recovers, forming a slight self-locking and preventing it from falling out, making it easier to take and install the film and not damaging the film. In addition, since the silica gel, rubber or fluororubber material can control the hardness during production, it can meet different application scenarios. For example, when in an environment with high pressure, the sealing ring usually needs to be harder and have less elasticity so as not to cause too much deformation and lead to smooth operation of the parts; while when in an environment with low pressure, the sealing ring usually needs to be softer and have greater elasticity so as to generate enough deformation to fill the uneven surface of the parts and meet the requirements of the sealing effect.

[0056] In some possible implementation manners, the length of the inner encapsulation ring vertical rib 4 is the same as the length of the outer encapsulation ring skirt 8, and the other end of the outer encapsulation ring skirt 8 provided with the limiting portion 9 extends to abut against the inner side of the free end of the outer side edge 3 of the inner encapsulation ring.

[0057] Those skilled in the art can understand that by making the length of the inner encapsulation ring vertical rib 4 the same as the length of the outer encapsulation ring skirt 8, and the other end of the outer encapsulation ring skirt 8 provided with the limiting portion 9 extends to abut against the inner side of the free end of the outer side edge 3 of the inner encapsulation ring, the combined self-locking encapsulation structure only has gaps on the side as a whole, and there are no gaps on the top and bottom, which is beneficial to the implementation of various feeding methods such as pushing, separating, and grasping.

[0058] In some possible implementation manners, a limiting protrusion 13 is provided on the outer side of the outer encapsulation ring skirt 8.

[0059] Those skilled in the art can understand that by providing a limiting protrusion 13 on the outer side of the outer encapsulation ring skirt 8, it can cooperate with the insertion, picking up or grasping operations of some manipulator jaws, which is beneficial to the automatic replacement of the filter membrane. In addition, by providing a limiting protrusion 13 on the outer side of the outer encapsulation ring skirt 8, a fulcrum for carrying and limiting other parts appears on the side of the outer encapsulation ring skirt 8. At this time, a general insertion-type manipulator mechanism can conveniently perform automatic feeding operations on it; at the same time, using the limiting protrusion 13 as a fulcrum and assembling and cooperating with a rigid multi-link frame such as a four-link row frame 15, a certain lateral pressure can be formed after the assembly and cooperation to enhance the self-locking strength so that the filter membrane 10 is not easy to fall out. As Figure 6 shown, it can form a four-link row, a twelve-link row, etc.; using the limiting protrusion 13 as a fulcrum and assembling and cooperating with a flexible multi-link frame, a longer elastic chain that can be bent and wound can be formed, which is beneficial to feeding and storage.

[0060] In some possible embodiments, M upper annular protrusions 12 are provided on the upper surfaces of the inner side edges 2 of the inner encapsulation ring and the outer side edges 3 of the inner encapsulation ring, and M lower annular protrusions 19 equal in number to the upper annular protrusions 12 are provided on the lower surface of the inner side edge 7 of the outer encapsulation ring; when any two self-locking filter membrane encapsulation structures are stacked, the M upper annular protrusions 12 are in one-to-one contact with the M lower annular protrusions 19 to form a separation zone 18, where M is a positive integer greater than or equal to 1.

[0061] This is because M upper annular protrusions 12 are provided on the upper surfaces of the inner side edges 2 of the inner encapsulation ring and the outer side edges 3 of the inner encapsulation ring, and M lower annular protrusions 19 equal in number to the upper annular protrusions 12 are provided on the lower surface of the inner side edge 7 of the outer encapsulation ring; when any two self-locking filter membrane encapsulation structures are stacked, the M upper annular protrusions 12 are in one-to-one contact with the M lower annular protrusions 19 to form a separation zone 18, where M is a positive integer greater than or equal to 1, which can play at least three roles: 1. It can enhance the seal when cooperating with other parts and the interlocking between the encapsulation ring and the filter plate 11 and the filter membrane 10 when being longitudinally compressed; 2. It makes a gap form between the encapsulation rings, which is beneficial for the partition plate 17 during feeding to extend into the gap; 3. When stacking the encapsulation rings, it can reduce the contact area between them and reduce the adhesion to each other. In addition, the corresponding contact between the upper annular protrusions 12 and the lower annular protrusions 19 makes there be a certain separation zone 18 between the adjacent self-locking encapsulation rings 14 placed in a stacked manner, as Figure 5 shown, at this time, common alternate partition feeding mechanisms, spiral separation feeding mechanisms, etc. can all conveniently perform automatic feeding operations on it.

[0062] In some possible embodiments, the filter plate 11 is a porous plate made of a rigid material.

[0063] Those skilled in the art can understand that by setting the filter plate 11 as a porous plate made of a rigid material, the filter plate 11 has both the functions of support and filtration, protecting the filter membrane and preventing the filter membrane from being damaged.

[0064] In some possible embodiments, the clamping portion 5 is a groove, the limiting portion 9 is a protrusion, and the groove is engaged with the protrusion; or, the clamping portion 5 is a protrusion, the limiting portion 9 is a groove, and the groove is engaged with the protrusion.

[0065] This is because the clamping portion 5 is set as a groove and the limiting portion 9 is a protrusion; or, the clamping portion 5 is set as a protrusion and the limiting portion 9 is a groove, and the concave part of the groove is engaged with the convex part of the protrusion, making the engagement between the clamping portion 5 and the limiting portion 9 closer.

[0066] Embodiment Two:

[0067] AsFigure 2-6 As shown in Figure 2-6 , Embodiment 2 of the present application provides a method for using a self-locking filter membrane encapsulation structure, which includes the following steps: Assembling the filter membrane 10, and the assembling of the filter membrane 10 includes: placing the filter membrane 10 close to the inner side of the inner encapsulation ring inner side 2 and laying it flat in the area surrounded by the inner encapsulation ring vertical baffle 4; laying the filter plate 11 flat on the filter membrane 10; vertically covering the outer encapsulation ring 6, surrounding the outer encapsulation ring 6 around the periphery of the inner encapsulation ring 1, and fitting and compacting the outer periphery of one side of the filter plate 11 with the inner side of the outer encapsulation ring 7; embedding the inner protrusion 9 of the outer encapsulation ring skirt 8 into the groove 5 of the inner encapsulation ring vertical baffle 4 or embedding the inner protrusion of the inner encapsulation ring vertical baffle 4 into the groove of the outer encapsulation ring skirt 8; completing the assembly; automatic feeding; the automatic feeding includes: placing the assembled self-locking filter membrane encapsulation structure into the sampling area; performing sampling, and the performing of sampling includes: suction filtration, clamping the self-locking filter membrane encapsulation structure with the filter head and the base, and making the fluid flow from the filter membrane 10 to the filter plate 11; the mutual extrusion of the filter head and the base and the fluid applying longitudinal pressure and / or lateral pressure to the self-locking filter membrane encapsulation structure. In the compressed state, the clamping part 5 and the limiting part 9 mutually extrude, increasing the self-locking strength of the self-locking filter membrane encapsulation structure; stopping suction filtration, taking out the self-locking filter membrane encapsulation structure to stop applying longitudinal pressure and / or lateral pressure to the self-locking filter membrane encapsulation structure, and the mutual acting force between the clamping part 5 and the limiting part 9 is released, weakening the self-locking strength of the self-locking filter membrane encapsulation structure; drying and storing, for drying and storing the filter membrane 10; disassembling the filter membrane 10, and the disassembling of the filter membrane 10 includes: firmly pinching or clamping the end of the outer side of the inner encapsulation ring 3 and lifting it upwards; pulling out the inner encapsulation ring 1 to take out the filter membrane 10 or taking out the filter membrane 10 and the filter plate 11 together.

[0068] For the method for using the self-locking filter membrane encapsulation structure provided by the present application, after the filter membrane 10 is assembled in the self-locking filter membrane encapsulation structure, a whole with a certain thickness and rigidity is formed, and the filter membrane 10 is surrounded and wrapped by the inner encapsulation ring 1 and the outer encapsulation ring 6, being protected and avoiding cross-contamination with the outside. At this time, common push rod feeding mechanisms, manipulator clamping mechanisms, etc. can all conveniently perform automatic feeding operations on it, and the filter membrane 10 tightly adheres to the filter plate, which can avoid liquid leakage and errors caused by accidental warping or loose fitting of the filter membrane 10. In addition, since the filter membrane 10 is assembled close to the inner encapsulation ring 1, the edge part of the filter membrane 10 can be avoided from slipping into the gap between the inner encapsulation ring vertical baffle 4 and the inner side of the outer encapsulation ring 7 during sampling. During sampling, the clamping part 5 and the limiting part 9 mutually extrude. Since the self-locking strength of the self-locking surface 16 of the self-locking filter membrane encapsulation structure will correspondingly increase in the compressed state, there is basically no relative displacement between the inner encapsulation ring 1 and the outer encapsulation ring 6, so that the filter membrane 10 is not disturbed. If there is a sample on the filter membrane 10, the sample is also not disturbed, protecting the fragile filter membrane 10 and the sample.

[0069] In some possible embodiments, the dry storage includes: putting the self-locking filter membrane encapsulation structure into a self-sealing bag with a relatively thick and rigid bag wall; putting a solid desiccant into the self-sealing bag and placing it outside the filter plate 11; sealing the self-sealing bag for storage.

[0070] This is because after the sample collection is completed, a thin layer of sample adheres to the outer side of the filter membrane 10. When storing, the double concave shape formed by the self-locking encapsulation ring can protect the sample. The concave surface with the filter membrane 10 can create a space for the filter membrane 10 to prevent the sample on the filter membrane 10 from being disturbed; the concave surface with the filter plate 11 can push the solid desiccant away by a certain distance and also prevent the disturbance of the sample.

[0071] Since the second embodiment and the first embodiment are embodiments under the same inventive concept and some of their structures are completely the same, the structures that are substantially the same as those in the first embodiment in the second embodiment will not be elaborated in detail. For the unelaborated parts, please refer to the first embodiment.

[0072] Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

[0073] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. Self-locking filter membrane packaging structure, Characterized in that, The self-locking filter membrane packaging structure includes: Inner packaging ring (1); the inner packaging ring (1) includes an inner packaging ring inner side (2) extending towards the center of the inner packaging ring (1) and an inner packaging ring outer side (3) connected to the inner packaging ring inner side (2) and extending in the opposite direction of the center direction of the inner packaging ring (1), and a downward-extending inner packaging ring vertical stop (4) arranged between the inner packaging ring inner side (2) and the inner packaging ring outer side (3); a clamping portion (5) is arranged on the side surface of one end of the inner packaging ring vertical stop (4) close to the inner packaging ring outer side (3); Outer packaging ring (6); the outer packaging ring (6) includes an outer packaging ring inner side (7) extending towards the center of the outer packaging ring (6), an outer packaging ring skirt (8) wrapping the inner packaging ring vertical stop (4) and having one end connected to one end of the outer packaging ring inner side (7), and a limiting portion (9) arranged at the other end of the outer packaging ring skirt (8) and extending towards the center of the outer packaging ring (6); Wherein, the outer packaging ring (6) surrounds the periphery of the inner packaging ring (1), a filter plate (11) is placed inside the inner packaging ring (1), and the outer periphery of one side of the filter plate (11) is attached to the outer packaging ring inner side (7). When an axial pressure perpendicular to the filter plate is applied to the filter plate, the outer periphery of one side of the filter plate squeezes the outer packaging ring inner side (7), so that the clamping portion (5) is engaged with the limiting portion (9).

2. The self-locking filter membrane packaging structure according to claim 1, Characterized in that: The number of the inner packaging ring vertical stops (4) and the number of the outer packaging ring skirts (8) are both N, where N is a positive integer greater than or equal to 1, and an outer packaging ring skirt (8) is arranged between any two inner packaging ring vertical stops (4).

3. The self-locking filter membrane packaging structure according to claim 2, Characterized in that: The inner packaging ring vertical stop (4) and the outer packaging ring skirt (8) are made of silica gel or rubber or fluororubber material.

4. The self-locking filter membrane packaging structure according to claim 3, Characterized in that: The length of the inner packaging ring vertical stop (4) is the same as the length of the outer packaging ring skirt (8), and the other end of the outer packaging ring skirt (8) provided with the limiting portion (9) extends to abut against the inner side of the inner packaging ring outer side (3).

5. The self-locking filter membrane packaging structure according to claim 4, Characterized in that: A limiting protrusion (13) is arranged on the outer side of the outer packaging ring skirt (8).

6. The self-locking filter membrane packaging structure according to claim 5, Characterized in that: On the upper surface of the inner side edge (2) of the inner encapsulation ring and the upper surface of the outer side edge (3) of the inner encapsulation ring, M upper annular protrusions (12) are provided; on the lower surface of the inner side edge (7) of the outer encapsulation ring, there are lower annular protrusions (19) with the same number as the upper annular protrusions (12); when any two of the self-locking filter membrane encapsulation structures are stacked, the M upper annular protrusions (12) are in one-to-one contact with the M lower annular protrusions (19) to form an isolation area (18), and M is a positive integer greater than or equal to 1.

7. The self-locking filter membrane encapsulation structure according to claim 6, characterized in that: The filter plate (11) is a porous plate made of a rigid material.

8. The self-locking filter membrane encapsulation structure according to claim 6, characterized in that: The clamping portion (5) is a groove, the limiting portion (9) is a convex groove, and the groove is clamped with the convex groove; or, The clamping portion (5) is a convex groove, the limiting portion (9) is a groove, and the groove is clamped with the convex groove.

9. A method for using the self-locking filter membrane encapsulation structure, for the self-locking filter membrane encapsulation structure according to any one of claims 1-7, characterized in that, comprising the following steps: Assembling the filter membrane (10), the assembling of the filter membrane (10) includes: Placing the filter membrane (10) close to the inner side of the inner side edge (2) of the inner encapsulation ring and laying it flat in the area surrounded by the inner encapsulation ring vertical baffle (4); Laying the filter plate (11) flat on the filter membrane (10); Vertically covering the outer encapsulation ring (6), surrounding the outer encapsulation ring (6) around the outer periphery of the inner encapsulation ring (1), and the outer periphery of one side of the filter plate (11) is attached and compacted with the inner side edge (7) of the outer encapsulation ring; Inserting the limiting portion (9) of the outer encapsulation ring skirt (8) into the clamping portion (5) of the inner encapsulation ring vertical baffle (4); Completing the assembly; Automatic feeding, the automatic feeding includes: Putting the self-locking filter membrane encapsulation structure after completion of assembly into the sampling area; Performing sampling, the performing of sampling includes: Suction filtration, clamping the self-locking filter membrane encapsulation structure with the filter head and the base, and making the fluid flow from the filter membrane (10) to the filter plate (11); the mutual extrusion of the filter head and the base and the fluid exert a longitudinal pressure and / or a lateral pressure on the self-locking filter membrane encapsulation structure. In the compressed state, the clamping portion (5) and the limiting portion (9) are mutually extruded, increasing the self-locking strength of the self-locking filter membrane encapsulation structure; Stopping suction filtration, taking out the self-locking filter membrane encapsulation structure to stop applying the longitudinal pressure and / or the lateral pressure to the self-locking filter membrane encapsulation structure, and the mutual acting force between the clamping portion (5) and the limiting portion (9) is released, weakening the self-locking strength of the self-locking filter membrane encapsulation structure; Drying and storing, for drying and storing the filter membrane (10); Disassembling the filter membrane (10), the disassembling of the filter membrane (10) includes: Pinching or clamping the end of the outer side edge (3) of the inner encapsulation ring with force and lifting it upward; Pulling out the inner encapsulation ring (1) to take out the filter membrane (10) or taking out the filter membrane (10) and the filter plate (11) together.

10. The method for using the self-locking filter membrane encapsulation structure according to claim 9, characterized in that: The dry storage includes: Putting the self-locking filter membrane encapsulation structure into a self-sealing bag with a relatively thick and rigid bag wall; Putting a solid desiccant into the self-sealing bag and placing it outside the filter plate (11); Closing the mouth of the self-sealing bag for storage.

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