Micro-nano transfer membrane ultrasonic separation and extraction device

Abstract

This invention relates to a micro / nano transfer membrane ultrasonic separation and extraction device. The device includes: a transfer container with a receiving cavity and a through hole at the bottom; a clamping part for clamping a sample and detachably fixed to the transfer container, wherein the friction end of the sample protrudes from the clamping part, allowing it to enter the through hole; a fixing part detachably fixed to the transfer container, having a drain hole, and the fixing part and transfer container clamping a microgrid support membrane such that the microgrid support membrane is located at the inlet of the drain hole and the outlet of the through hole; and a sealing part for sealing or opening the outlet of the drain hole. This micro / nano transfer membrane ultrasonic separation and extraction device can accurately position the transfer membrane, reducing operational difficulty and facilitating the precise extraction of transfer membranes from the same region from samples in different experimental groups. The operation of the clamping part to manipulate the sample minimizes contamination of the transfer membrane.

Description

Technical Field

[0001] This invention relates to the field of transfer membrane separation and extraction technology, and in particular to a micro / nano transfer membrane ultrasonic separation and extraction device. Background Technology

[0002] The material transfer behavior and structural evolution during sliding contact is a key research topic in the field of tribology in mechanical engineering. Under certain lubrication conditions, a transfer film forms on the surface of the friction pair through a series of physical and chemical interactions. Analyzing the composition and bonding structure of this transfer film is of great significance for fundamental scientific research and lubrication design. To achieve this type of analysis, the transfer film needs to be non-destructively separated from the friction pair surface and transferred to a microgrid support film for characterization using micro Raman spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, and transmission electron microscopy. However, for specimens in ball-and-disc friction and wear experiments, the size of the transfer film formed on the friction ball is typically between tens and hundreds of micrometers, making the effective separation of the transfer film from the friction ball a challenging problem.

[0003] Current experimental studies typically employ methods such as ethanol rinsing and filtration, or needle tip picking, to separate the transfer membrane on the friction ball. However, this approach has the following drawbacks:

[0004] (1) High randomness: The human error introduced by the operation is relatively large, making it difficult to ensure that the transfer film on the friction ball of different experimental groups is accurately extracted from the same area;

[0005] (2) High operational difficulty: The transfer membrane is small in size, making visual positioning difficult, which requires a high degree of technical expertise from the experimenter and makes it easy to make mistakes during operation;

[0006] (3) Easily contaminated: Since the friction ball is operated directly, impurities are easily introduced during the operation, which affects the extraction quality. Summary of the Invention

[0007] Therefore, it is necessary to provide a micro / nano transfer membrane ultrasonic separation and extraction device to address the aforementioned problems existing in current separation and extraction transfer membrane technologies.

[0008] One embodiment of this application provides a micro / nano transfer membrane ultrasonic separation and extraction device, comprising:

[0009] A transfer container having a receiving cavity, the bottom of which has a through hole;

[0010] A clamping part is used to clamp the specimen and is detachably fixedly connected to the transfer container. When the clamping part clamps the specimen, the friction end of the specimen protrudes from the clamping part, so that the friction end of the specimen can enter the through hole.

[0011] A fixing part, detachably fixedly connected to the transfer container, the fixing part having a drain hole, the fixing part and the transfer container being used to clamp the microgrid support membrane, such that the microgrid support membrane is located at the inlet of the drain hole and the outlet of the through hole; and

[0012] A sealing part is used to seal or open the outlet of the drain hole.

[0013] The aforementioned ultrasonic separation and extraction device for micro / nano transfer membranes utilizes a clamping mechanism to hold the specimen in place. When the specimen is clamped, the friction end of the specimen protrudes from the clamping mechanism, allowing it to form a transfer membrane through frictional contact during friction and wear experiments. This ensures the transfer membrane is located at the protruding end of the specimen (the friction end), achieving precise positioning. During separation and extraction, the specimen does not need to be removed from the clamping mechanism; the clamping mechanism is detachably and securely connected to the transfer container. This ensures the transfer membrane at the friction end can enter the through-hole and be immersed in the transfer medium within, accurately guaranteeing efficient separation and extraction. The precise positioning of the transfer membrane during separation and extraction reduces operational difficulty and facilitates accurate extraction of transfer membranes from the same area for specimens from different experimental groups. Furthermore, by clamping the specimen, the clamping mechanism can be manipulated during operation, eliminating the need for direct contact and minimizing contamination of the transfer membrane.

[0014] In one embodiment, a sealing ring is provided between the fixing part and the transfer container, and the sealing ring is located at the clamping point where the fixing part and the transfer container clamp the microgrid support film.

[0015] In one embodiment, the fixing part is threadedly connected to the transfer container.

[0016] In one embodiment, the clamping part includes:

[0017] A first clamping member has a recessed cavity, the bottom of which has a clearance hole. The recessed cavity is used to accommodate the test piece, and the clearance hole is used to allow the friction end to extend beyond the first clamping member.

[0018] A second clamping member is detachably fixedly connected to the first clamping member, and the bottom of the cavity faces the second clamping member, such that the second clamping member presses the specimen against the bottom of the cavity.

[0019] In one embodiment, along the direction extending from the friction end of the first clamping member, the inner diameter of the clearance hole gradually decreases and is used to fit the test piece, and when the second clamping member presses the test piece, the test piece abuts against the wall of the clearance hole.

[0020] In one embodiment, the second clamping member is provided with a mating groove for mating with the specimen.

[0021] In one embodiment, along the direction extending from the friction end of the first clamping member, the inner diameter of the mating groove gradually increases and is used to fit the test piece.

[0022] In one embodiment, the second clamping member is adjustable relative to the first clamping member in a direction toward or away from the bottom of the cavity.

[0023] In one embodiment, the second clamping member is threadedly connected to the first clamping member.

[0024] In one embodiment, the micro / nano transfer membrane ultrasonic separation and extraction device further includes: a cover body, which is detachably fixedly connected to the transfer container, the cover body surrounding the clamping part and blocking the opening of the receiving cavity.

[0025] In one embodiment, the clamping part is detachably fixedly connected to the cover, such that the clamping part is indirectly detachably fixedly connected to the transfer container.

[0026] In one embodiment, the cover is threadedly connected to the transfer container.

[0027] In one embodiment, a sealing ring is provided between the cover and the transfer container.

[0028] In one embodiment, the clamping part is adjustable relative to the cover in a direction toward or away from the bottom of the receiving cavity.

[0029] In one embodiment, the ultrasonic separation and extraction device for micro-nano transfer membranes further includes a locking member, one end of which passes through the cover and is detachably fixedly connected to the clamping part, and the locking member is threadedly connected to the cover.

[0030] In one embodiment, the locking member is threadedly connected to the clamping portion.

[0031] In one embodiment, the inner diameter of the through hole decreases from large to small along the direction in which the friction end protrudes from the clamping portion.

[0032] In one embodiment, the through hole includes a tapered hole and a cylindrical hole; the tapered hole and the cylindrical hole are arranged sequentially along the direction in which the friction end protrudes from the clamping part, and the inner diameter of the tapered hole gradually decreases; the inner diameter of the cylindrical hole is the same as the minimum inner diameter of the tapered hole.

[0033] In one embodiment, the inlet wall of the through hole is used to abut against the specimen to form a sealing fit.

[0034] In one embodiment, the sealing portion is threadedly engaged with the drain hole.

[0035] In one embodiment, a sealing ring is provided between the sealing part and the fixing part.

[0036] In one embodiment, the micro / nano transfer membrane ultrasonic separation and extraction device further includes an ultrasonic container for accommodating the transfer container, the fixing part, and the sealing part. The ultrasonic container is used to contain an ultrasonic medium and is used to connect to an ultrasonic module.

[0037] In one embodiment, the micro / nano transfer membrane ultrasonic separation and extraction device further includes an ultrasonic module. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the separation and extraction of a transfer membrane using a micro / nano transfer membrane ultrasonic separation and extraction device according to an embodiment.

[0039] Explanation of icon numbers:

[0040] Specimen 10; Friction end 11; Transfer membrane 12; Microgrid support membrane 20; Transfer medium 30; Ultrasonic medium 40;

[0041] Micro / nano transfer membrane ultrasonic separation and extraction device 100; transfer container 110; clamping part 120; first clamping member 121; second clamping member 122; fixing part 130; sealing part 140; cover 150; locking member 160; ultrasonic container 170; ultrasonic module 180; sealing ring 190; receiving cavity 101; through hole 102; conical hole 1021; cylindrical hole 1022; drain hole 103; concave cavity 104; clearance hole 105; mating groove 106. Detailed Implementation

[0042] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0047] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0048] Please refer to Figure 1 This application provides a micro / nano transfer membrane ultrasonic separation and extraction device 100 and a specimen 10 in one embodiment. The specimen 10 is a specimen used for a friction and wear test. After the friction and wear test, a transfer membrane 12 will form on the end of the specimen 10 used for friction contact (i.e., the friction end 11). The micro / nano transfer membrane ultrasonic separation and extraction device 100 is used to separate and extract the transfer membrane 12 on the specimen 10 onto a microgrid support membrane 20.

[0049] The micro / nano transfer membrane ultrasonic separation and extraction device 100 includes: a transfer container 110, a clamping part 120, a fixing part 130, and a sealing part 140.

[0050] The transfer container 110 has a receiving cavity 101, and a through hole 102 is provided at the bottom of the receiving cavity 101. The receiving cavity 101 is used to hold the transfer medium 30, so that the transfer medium 30 can flow into the through hole 102. The transfer medium 30 is, for example, anhydrous ethanol or acetone.

[0051] During the separation and extraction of the transfer membrane 12, the fixing part 130 is detachably fixedly connected to the transfer container 110, and the microgrid support membrane 20 is clamped between the fixing part 130 and the transfer container 110, thereby fixing the microgrid support membrane 20. The fixing part 130 is provided with a drain hole 103. The sealing part 140 is used to seal or open the drain hole 103. The microgrid support membrane 20 is located at the outlet of the through hole 102 and the inlet of the drain hole 103. Therefore, when the sealing part 140 seals the drain hole 103, the transfer medium 30 in the through hole 102 cannot be discharged through the drain hole 103, thereby ensuring that there is sufficient transfer medium 30 in the through hole 102.

[0052] When used in a friction and wear test, the specimen 10 can be clamped by the clamping part 120. When the clamping part 120 clamps the specimen 10, the friction end 11 of the specimen 10 protrudes from the clamping part 120, so that the friction end 11 can be used for frictional contact in the friction and wear test, thereby forming a transfer film 12. After the specimen 10 forms a transfer film 12 through the friction and wear test, the transfer film 12 is separated and extracted, and the clamping part 120 is detachably fixed to the transfer container 110. Since the friction end 11 of the specimen 10 protrudes from the clamping part 120 when the clamping part 120 clamps the specimen 10, the friction end 11 can enter the through hole 102, so that the transfer film 12 can enter the through hole 102 and be immersed in the transfer medium 30 in the through hole 102.

[0053] During the separation and extraction of the transfer membrane 12, the transfer container 110, the fixing part 130, and the sealing part 140 are all placed inside the ultrasonic container 170. Ultrasonic energy is applied to the ultrasonic container 170 through the ultrasonic module 180. The ultrasonic energy is transmitted to the transfer container 110 through the ultrasonic medium 40 inside the ultrasonic container 170, and then to the friction end 11 of the specimen 10 through the transfer medium 30 inside the transfer container 110, thereby causing the transfer membrane 12 to separate from the specimen 10. The separated transfer membrane 12 forms fragments and together with the transfer medium 30 in the through hole 102 forms a suspension. At this time, the drain hole 103 is opened through the sealing part 140, and the transfer medium 30 in the suspension in the through hole 102 passes through the microgrid support membrane 20 and is discharged through the drain hole 103. The fragments of the transfer membrane 12 in the suspension precipitate on the microgrid support membrane 20. By disassembling the fixing part 130 from the transfer container 110, the microgrid support membrane 20 containing fragments of the transfer membrane 12 can be removed, thus completing the separation and extraction of the transfer membrane 12. The ultrasonic medium 40 can be, but is not limited to, pure water.

[0054] The aforementioned micro / nano transfer membrane ultrasonic separation and extraction device 100, by using a clamping part 120 to clamp the specimen 10, allows the friction end 11 of the specimen 10 to protrude from the clamping part 120 during clamping. This friction end 11 can then be used for frictional contact in a friction and wear experiment to form a transfer membrane 12. This ensures that the transfer membrane 12 is located at the end of the specimen 10 protruding from the clamping part 120 (the friction end 11), thus achieving the positioning of the transfer membrane 12. During the separation and extraction of the transfer membrane 12, it is not necessary to remove the specimen 10 from the clamping part 120. The clamping part 120 can be detachably and fixedly connected to the transfer container 110, ensuring that the transfer membrane 12 at the friction end 11 can enter the through hole 102 and be immersed in the transfer medium 30 within the through hole 102. This accurately guarantees the separation and extraction efficiency of the transfer membrane 12. Because the transfer membrane 12 can be accurately positioned during separation and extraction, the operational difficulty is reduced, and it is easy to accurately extract the transfer membrane 12 from the same area for specimens 10 in different experimental groups. Moreover, by clamping the specimen 10 with the clamping part 120, the specimen 10 can be manipulated during operation by operating the clamping part 120, without direct contact with the specimen 10, thus reducing the risk of contamination of the transfer membrane 12.

[0055] In this embodiment, the specimen 10 is a friction ball used in the ball-and-disc friction and wear test. It is understood that the specimen 10 is not limited to a friction ball, but can also be other specimens used in friction and wear tests, such as a triangular pyramid.

[0056] In one embodiment, the micro / nano transfer membrane ultrasonic separation and extraction device 100 includes an ultrasonic container 170. The ultrasonic container 170 is used to house a transfer container 110, a fixing portion 130, and a sealing portion 140. The ultrasonic container 170 is used to house an ultrasonic medium 40. The ultrasonic container 170 is used to connect to an ultrasonic module 180, enabling the ultrasonic module 180 to transfer energy to the ultrasonic container 170.

[0057] In other embodiments, the ultrasonic separation and extraction device 100 for micro-nano transfer membranes may not include the ultrasonic container 170, but instead utilizes a separately purchased ultrasonic container 170 for the separation and extraction of the transfer membrane 12.

[0058] In one embodiment, the micro / nano transfer membrane ultrasonic separation and extraction device 100 includes an ultrasonic module 180.

[0059] In other embodiments, the ultrasonic separation and extraction device 100 for micro-nano transfer membranes may not include the ultrasonic module 180, but instead utilizes a separately purchased ultrasonic module 180 during the separation and extraction of the transfer membrane 12.

[0060] Please refer to Figure 1In one embodiment, a sealing ring 190 is provided between the fixing part 130 and the transfer container 110. The sealing ring 190 is located at the clamping point where the fixing part 130 and the transfer container 110 clamp the microgrid support film 20, thereby ensuring that the transfer medium 30 does not flow out between the fixing part 130 and the transfer container 110, and thus ensuring that there is sufficient transfer medium 30 in the through hole 102.

[0061] Please refer to Figure 1 In one embodiment, the transfer container 110 is threadedly connected to the fixing part 130, thereby achieving a detachable fixed connection between the transfer container 110 and the fixing part 130. Specifically, the internal thread of the transfer container 110 engages with the external thread of the fixing part 130.

[0062] Please refer to Figure 1 In one embodiment, the clamping part 120 includes a first clamping member 121 and a second clamping member 122. The first clamping member 121 has a cavity 104 for accommodating the specimen 10. The second clamping member 122 is detachably fixedly connected to the first clamping member 121. The bottom of the cavity 104 faces the second clamping member 122, so that the second clamping member 122 presses the specimen 10 against the bottom of the cavity 104, thereby clamping the specimen 10 by the first clamping member 121 and the second clamping member 122. The bottom of the cavity 104 has a clearance hole 105, which avoids the friction end 11, so that the friction end 11 extends through the clearance hole 105 and protrudes beyond the first clamping member 121, i.e., protrudes from the first clamping member 121. Thus, the friction end 11 can be used for frictional contact in the friction and wear experiment, and the transfer film 12 formed by the friction end 11 can also enter the through hole 102.

[0063] Please refer to Figure 1 In one embodiment, along the direction of the friction end 11 extending from the first clamping member 121 (in... Figure 1 From top to bottom, the inner diameter of the clearance hole 105 gradually decreases, and the outer diameter of the portion of the specimen 10 located within the clearance hole 105 gradually decreases, thus adapting the clearance hole 105 to the specimen 10 and enabling the specimen 10 to be clamped more reliably. Furthermore, because the inner diameter of the clearance hole 105 gradually decreases, when the second clamping member 122 presses against the specimen 10, the specimen 10 can abut against the wall of the clearance hole 105 and will not fall out of the clearance hole 105, thereby further ensuring that the specimen 10 is clamped.

[0064] Specifically, in this embodiment, the specimen 10 is a friction ball, and the wall of the clearance hole 105 can be a spherical arc surface that is compatible with the friction ball.

[0065] In other embodiments, when the specimen 10 is a triangular pyramid, the wall of the clearance hole 105 can be three planes connected in sequence and in an inclined state, and the three planes respectively fit into the three outer surfaces of the triangular pyramid.

[0066] Please refer to Figure 1 In one embodiment, the second clamping member 122 has a mating groove 106 on the side facing the bottom of the cavity 104. The mating groove 106 is used to mate with the test piece 10, so that the second clamping member 122 and the test piece 10 are not easily displaced, which is conducive to the second clamping member 122 and the first clamping member 121 clamping the test piece 10.

[0067] Please refer to Figure 1 In one embodiment, along the direction of the friction end 11 extending from the first clamping member 121 (in... Figure 1 (From top to bottom) The inner diameter of the mating groove 106 gradually increases, and the outer diameter of the part of the specimen 10 located in the mating groove 106 gradually increases, so that the mating groove 106 is adapted to the specimen 10, and the specimen 10 can be clamped more reliably.

[0068] In one embodiment, the second clamping member 122 can be adjusted relative to the first clamping member 121 towards or away from the bottom of the cavity 104, thereby adjusting the degree to which the second clamping member 122 and the first clamping member 121 clamp the specimen 10, ensuring that the clamping degree of the specimen 10 is appropriate. For specimens 10 of different sizes, the position of the second clamping member 122 relative to the first clamping member 121 can also be adjusted towards or away from the bottom of the cavity 104, so that specimens 10 of different sizes can be clamped, thereby making the micro-nano transfer membrane ultrasonic separation and extraction device 100 applicable to a variety of specimens 10 of different sizes.

[0069] Please refer to Figure 1 In one embodiment, the second clamping member 122 is threadedly connected to the first clamping member 121, facilitating the relative fixing and disassembly of the second clamping member 122 and the first clamping member 121. Simultaneously, it also facilitates the adjustment of the position of the second clamping member 122 relative to the first clamping member 121 towards or away from the bottom of the cavity 104. Specifically, the internal thread of the first clamping member 121 engages with the external thread of the second clamping member 122.

[0070] Please refer to Figure 1 In one embodiment, the micro / nano transfer membrane ultrasonic separation and extraction device 100 further includes a cover 150. The cover 150 is detachably fixedly connected to the transfer container 110. The cover 150 surrounds the clamping part 120 and blocks the opening of the receiving cavity 101, thereby preventing external impurities from entering the transfer container 110 during the separation and extraction of the transfer membrane 12, thus reducing or avoiding contamination.

[0071] Please refer to Figure 1In one embodiment, the clamping part 120 is detachably fixed to the cover 150, which can be achieved indirectly by detachably fixing the cover 150 to the transfer container 110.

[0072] Please refer to Figure 1 In one embodiment, the cover 150 is threadedly connected to the transfer container 110, facilitating a detachable and fixed connection between the cover 150 and the transfer container 110. Specifically, the internal thread of the cover 150 engages with the external thread of the transfer container 110.

[0073] Please refer to Figure 1 In one embodiment, a sealing ring 190 is provided between the cover 150 and the transfer container 110, thereby enabling a sealed fit between the cover 150 and the transfer container 110, and further preventing external impurities from entering the transfer container 110.

[0074] Please refer to Figure 1 In one embodiment, the inlet wall of the through-hole 102 is used to abut against the sample 10. During the separation and extraction of the transfer membrane 12, since the sample 10 abuts against the inlet wall of the through-hole 102, a sealing fit is formed between the sample 10 and the inlet wall of the through-hole 102. This ensures that the transfer membrane 12, after being separated from the sample 10, remains entirely within the through-hole 102, thus minimizing the possibility of fragments formed by the transfer membrane 12 entering the receiving cavity 101 from the inlet of the through-hole 102. In this way, the concentration of fragments formed by the transfer membrane 12 in the suspension within the through-hole 102 is maintained as much as possible, thereby ensuring the extraction efficiency of the transfer membrane 12.

[0075] In one embodiment, the clamping part 120 can be adjusted relative to the cover 150 in a direction closer to or further away from the bottom of the receiving cavity 101. Before the cover 150 is fixedly connected to the transfer container 110, the clamping part 120 can be adjusted relative to the cover 150 in a direction further away from the bottom of the receiving cavity 101, so that the clamping part 120 and the specimen 10 are as far away from the bottom of the receiving cavity 101 as possible, thereby avoiding interference between the clamping part 120 and the specimen 10 and the transfer container 110 when the cover 150 is fixedly connected to the transfer container 110. After the cover 150 is fixedly connected to the transfer container 110, the clamping part 120 can be adjusted relative to the cover 150 in a direction closer to the bottom of the receiving cavity 101, so that the clamping part 120 carries the specimen 10 towards the through hole 102, thereby ensuring that the transfer film 12 of the friction end 11 enters the through hole 102.

[0076] Furthermore, before the cover 150 is fixedly connected to the transfer container 110, the clamping part 120 is adjusted relative to the cover 150 in a direction away from the bottom of the receiving cavity 101. This ensures that the clamping part 120 and the specimen 10 are as far away from the bottom of the receiving cavity 101 as possible, allowing the transfer medium 30 in the receiving cavity 101 to flow into the through hole 102, thus ensuring sufficient transfer medium 30 in the through hole 102. After the cover 150 is fixedly connected to the transfer container 110, the clamping part 120 is adjusted relative to the cover 150 in a direction closer to the bottom of the receiving cavity 101. This allows the clamping part 120 to carry the specimen 10 towards the through hole 102, ensuring that the specimen 10 is pressed tightly against the inlet wall of the through hole 102.

[0077] Please refer to Figure 1 In one embodiment, the micro / nano transfer membrane ultrasonic separation and extraction device 100 further includes a locking member 160. One end of the locking member 160 passes through the cover 150 and is detachably fixedly connected to the clamping part 120. The locking member 160 is threadedly connected to the cover 150, so that by rotating the locking member 160 relative to the cover 150, the locking member 160, carrying the clamping part 120 and the sample 10, can be adjusted in position towards or away from the bottom of the receiving cavity 101. Specifically, the external thread of the locking member 160 engages with the internal thread of the cover 150.

[0078] Please refer to Figure 1 In one embodiment, the locking member 160 is threadedly connected to the clamping part 120. Specifically, the external thread of the locking member 160 engages with the internal thread of the clamping part 120. In this embodiment, the external thread of the locking member 160 engages with the internal thread of the first clamping member 121.

[0079] Please refer to Figure 1 In one embodiment, the friction end 11 protrudes from the clamping portion 120 in the direction (in) Figure 1 From top to bottom, the inner diameter of the through hole 102 decreases from large to small. Therefore, the inlet diameter of the through hole 102 is relatively large, which ensures that the transfer membrane 12 on the specimen 10 enters the through hole 102 as much as possible, thereby maximizing the extraction efficiency of the transfer membrane 12. Furthermore, because it protrudes from the friction end 11 into the clamping part 120 (in... Figure 1 From top to bottom, the inner diameter of the through hole 102 decreases from large to small. As a result, the area where the inner diameter of the through hole 102 decreases makes the capacity of the through hole 102 relatively small, which in turn makes the concentration of fragments formed by the transfer membrane 12 in the suspension of the through hole 102 relatively large, which is beneficial to improving the extraction efficiency of the transfer membrane 12.

[0080] Please refer to Figure 1 In one embodiment, the through hole 102 includes a tapered hole 1021 and a cylindrical hole 1022. It protrudes from the friction end 11 into the clamping portion 120 in the direction (in...) Figure 1 (From top to bottom), conical holes 1021 and cylindrical holes 1022 are distributed sequentially. Figure 1 The cylindrical hole 1022 is located below the tapered hole 1021. Along the direction from the friction end 11 protruding from the clamping part 120, the inner diameter of the tapered hole 1021 gradually decreases, and the inner diameter of the cylindrical hole 1022 is the same as the minimum inner diameter of the tapered hole 1021, thus achieving a decrease in the inner diameter of the through hole 102. Furthermore, designing the through hole 102 as a combination of the tapered hole 1021 and the cylindrical hole 1022 facilitates machining.

[0081] Please refer to Figure 1 In one embodiment, the sealing part 140 is threadedly engaged with the drain hole 103, so that the drain hole 103 can be opened or sealed by rotating the sealing part 140 relative to the fixing part 130, which is convenient for operation.

[0082] Please refer to Figure 1 In one embodiment, a sealing ring 190 is provided between the sealing part 140 and the fixing part 130, thereby further preventing the transfer medium 30 from flowing out of the drain hole 103.

[0083] In other embodiments, the sealing part 140 may also be a valve, and the opening or closing of the valve can also achieve the sealing or opening of the drain hole 103.

[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A micro / nano transfer membrane ultrasonic separation and extraction device, used to separate and extract a transfer membrane from a sample onto a microgrid support membrane, wherein the transfer membrane forms at the friction end of the sample after a friction and wear test, characterized in that... The micro / nano transfer membrane ultrasonic separation and extraction device includes: A transfer container has a receiving cavity for holding a transfer medium, and the bottom of the receiving cavity has a through hole into which the transfer medium can flow. A clamping part is used to clamp the specimen and is detachably fixed to the transfer container. When the clamping part clamps the specimen, the friction end of the specimen protrudes from the clamping part, so that the friction end of the specimen can enter the through hole, so that the transfer film of the friction end can enter the through hole and be immersed in the transfer medium in the through hole. A fixing part, detachably fixedly connected to the transfer container, the fixing part having a drain hole, the fixing part and the transfer container being used to clamp the microgrid support membrane, such that the microgrid support membrane is located at the inlet of the drain hole and the outlet of the through hole; and, A sealing part, used to seal or open the outlet of the drain hole; The inlet wall of the through hole is used to press against the specimen to form a sealing fit, so that the transfer membrane is entirely located within the through hole after being separated from the specimen.

2. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 1, characterized in that, The clamping part includes: A first clamping member has a recessed cavity, the bottom of which has a clearance hole. The recessed cavity is used to accommodate the test piece, and the clearance hole is used to allow the friction end to extend beyond the first clamping member; and, A second clamping member is detachably fixedly connected to the first clamping member, and the bottom of the cavity faces the second clamping member, such that the second clamping member presses the specimen against the bottom of the cavity.

3. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 2, characterized in that, Along the direction extending from the first clamping member at the friction end, the inner diameter of the clearance hole gradually decreases and is used to fit the test piece. When the second clamping member presses the test piece, it causes the test piece to abut against the wall of the clearance hole.

4. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 2, characterized in that, The second clamping member can be adjusted relative to the first clamping member in a direction closer to or further away from the bottom of the cavity.

5. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 4, characterized in that, The second clamping member is threadedly connected to the first clamping member.

6. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 1, characterized in that, Also includes: The cover is detachably fixed to the transfer container, and the cover surrounds the clamping part and blocks the opening of the receiving cavity.

7. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 6, characterized in that, The clamping part is detachably fixedly connected to the cover, such that the clamping part is indirectly detachably fixedly connected to the transfer container.

8. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 6, characterized in that, The clamping part can be adjusted relative to the cover in a direction closer to or further away from the bottom of the receiving cavity.

9. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 8, characterized in that, It also includes a locking element, one end of which passes through the cover and is detachably fixedly connected to the clamping part, and the locking element is threadedly connected to the cover.

10. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 1, characterized in that, Along the direction in which the friction end protrudes from the clamping part, the inner diameter of the through hole decreases from large to small.

11. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 10, characterized in that, The through hole includes a tapered hole and a cylindrical hole; along the direction in which the friction end protrudes from the clamping part, the tapered hole and the cylindrical hole are arranged sequentially, and the inner diameter of the tapered hole gradually decreases; the inner diameter of the cylindrical hole is the same as the minimum inner diameter of the tapered hole.

12. The micro / nano transfer membrane ultrasonic separation and extraction device according to claim 1, characterized in that, The sealing part is threadedly engaged with the drain hole.

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