Lunar soil sample storage container with axial order preservation and sealing function and storage method

Abstract

The application relates to a lunar soil sample storage container with axial order preservation and sealing functions and a storage method. The lunar soil sample storage container comprises a packaging tank body, a sampling tube and a cover body. The sampling tube can be adaptively sleeved in the packaging tank body from the open end of the packaging tank body, and the cover body can be sealingly installed at the open end of the packaging tank body. An axial driving nut is rotatably installed in the cover body, an axial driving lead screw is threadedly connected in the axial driving nut, a pressing plate upper cover is fixed to one end of the axial driving lead screw close to the packaging tank body, and the pressing plate upper cover is elastically connected with a sample pressing plate through a first spring. The axial driving nut can drive the axial driving lead screw to move axially, so that the pressing plate upper cover is sealingly connected with the packaging tank body and the sampling tube respectively, and the sample pressing plate can be adaptively inserted into the sampling tube to axially extrude the packaged lunar soil sample. The axial compression mechanism is added in the lunar soil storage container to give the packaged lunar soil sample a certain axial pressure, so that the influence of the transportation process on the sample layer sequence is weakened.

Description

Technical Field

[0001] This invention relates to the technical field of lunar soil sample storage, specifically to a lunar soil sample storage container and storage method with axial order preservation and sealing functions. Background Technology

[0002] Regarding lunar soil sample encapsulation technology, the earliest method primarily employed knife-edge extrusion indium-silver alloy sealing. However, due to the influence of lunar dust debris, this sealing technique experienced multiple failures during missions. With technological advancements, the structural design and composition of the knife-edge extrusion indium-silver alloy sealing technology were improved, evolving into a molten metal sealing technique, eliminating the impact of lunar dust debris on the sealing performance. In the Mars sample return mission, explosive welding sealing and brazing sealing techniques were employed. These two techniques theoretically achieved absolute airtightness while ensuring the outer wall of the encapsulation container remained uncontaminated. Subsequently, a sample encapsulation container with a shape memory alloy cap / stopper was designed for Martian rock core samples, reducing the risk of sample contamination compared to welding sealing. Beyond sealing technology, maintaining the stratigraphic sequence of the encapsulated lunar soil sample is crucial for subsequent research; however, the designed encapsulation containers could not further protect the stratigraphic sequence of the lunar soil sample after encapsulation.

[0003] Compared to core samples, soil samples are softer, and the sequence of soil samples after encapsulation is more susceptible to vibration during transportation. Therefore, it is essential to actively maintain the sequence of samples.

[0004] The Apollo program employed a cylindrical sample container. This container was used to collect core samples or trace gas samples. The container's seal utilized a metal compression sealing technique. Sharp blades were machined into the container's shell, and an indium-silver alloy was fitted onto the lid. The blades pressed the indium-silver alloy to form a seal. A claw mechanism was installed on the lid, which pressed the lid firmly against the blades in the container shell and locked it in place. However, the sample containers used in the Apollo program only provided a sealing function; they lacked a sample stratigraphic preservation function and could not effectively preserve the bedding information of lunar soil samples. Summary of the Invention

[0005] In order to solve one or more technical problems existing in the prior art, the present invention provides a lunar soil sample storage container and storage method with axial order preservation and sealing functions.

[0006] The technical solution of this invention to solve the above-mentioned technical problems is as follows: This invention provides a lunar soil sample storage container with axial order preservation and sealing functions, including a sealing container body, a sampling tube, and a cover. The sampling tube can be adapted to be installed inside the sealing container body from the open end. The cover can be opened and sealed at the open end of the sealing container body. An axial drive nut is rotatably installed inside the cover. An axial drive screw is internally threaded into the axial drive nut. A pressure plate cover is fixed to one end of the axial drive screw near the sealing container body. The pressure plate cover is elastically connected to a sample pressure plate through a first spring. The axial drive nut can drive the axial drive screw to move axially, so that the pressure plate cover is sealed to the sealing container body and the sampling tube respectively. The sample pressure plate can be adapted to extend into the sampling tube to axially compress the sealed lunar soil sample.

[0007] The beneficial effects of this invention are as follows: By adding an axial compression mechanism to the lunar soil storage container to apply a certain axial pressure to the packaged lunar soil sample, the invention reduces soil porosity, thereby weakening the impact of the transportation process on the sample stratigraphy. This further protects the stratigraphy of the lunar soil sample after packaging. Furthermore, the sealing structure reduces the impact of external environmental changes on the internal sample.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the axial drive nut is rotatably mounted in the cover body via a bushing or bearing, and both the axial drive nut and the axial drive screw are arranged coaxially with the main body of the packaging can.

[0010] Furthermore, a first sleeve is fixed in the middle of the side of the pressure plate cover away from the axial drive screw, and a second sleeve is fixed in the middle of the side of the sample pressure plate near the pressure plate cover. The second sleeve is sleeved inside the first sleeve, and the first spring is installed in the first sleeve and the second sleeve and abuts against the pressure plate cover and the sample pressure plate, respectively.

[0011] The beneficial effect of adopting the above-mentioned further solution is that by setting the first sleeve and the second sleeve, it is convenient to stably connect the spring between the pressure plate cover and the sample pressure plate.

[0012] Furthermore, the inner peripheral edge of the lower end of the first sleeve is provided with a first limiting edge, and the outer peripheral edge of the upper end of the second sleeve is provided with a second limiting edge. When the second sleeve moves downward to the limit position, the second limiting edge abuts against the first limiting edge.

[0013] The beneficial effect of adopting the above-mentioned further solution is that by setting the first limiting edge and the second limiting edge, the second sleeve is prevented from coming off the first sleeve during use.

[0014] Furthermore, a first annular sealing gap is reserved between the upper outer peripheral sidewall of the sampling tube and the upper inner peripheral sidewall of the packaging can body. A sealing cylinder is fixed on the side of the pressure plate cover away from the axial drive screw. The sealing cylinder is located at the peripheral edge of the pressure plate cover. A second annular sealing gap is reserved between the sealing cylinder and the first sleeve. A sealing ring is installed on the outer peripheral sidewall of the sealing cylinder. The sealing cylinder is inserted into the first annular sealing gap. The sealing cylinder is sealed and abutted against the inner sidewall of the open end of the packaging can body through the sealing ring. The upper end of the sampling tube is inserted into the second annular sealing gap.

[0015] The beneficial effect of adopting the above-mentioned further solution is that by setting a sealing ring and annular sealing interval, a stable and effective seal can be achieved between the open end of the sealing tank body and the sampling tube.

[0016] Furthermore, an annular sealing gasket is installed on the side of the pressure plate cover away from the axial drive screw. The annular sealing gasket is adapted to be installed on the bottom wall of the second annular sealing interval, and the upper end of the sampling tube is sealed against the annular sealing gasket.

[0017] The beneficial effect of adopting the above-mentioned further solution is that by setting an annular sealing gasket, an additional layer of sealing can be added between the upper end of the sampling tube and the cover of the pressure plate, thereby increasing the sealing effect.

[0018] Furthermore, the pressure plate cover is arranged perpendicularly to the axial drive screw, and the sample pressure plate is arranged perpendicularly to the axial drive screw.

[0019] Furthermore, one end of the cover is hinged to the open end of the main body of the packaging can, and the other end of the cover is snapped to the upper outer wall of the main body of the packaging can via a snap-fit ​​assembly.

[0020] Furthermore, from the bottom wall of the main body of the packaging container to the open end, the inner diameter of the inner side wall of the main body of the packaging container gradually increases, and the wall thickness of the sampling tube gradually increases; the outer side wall of the sampling tube is adapted to abut against the inner side wall of the main body of the packaging container, and a positioning hook is provided on the inner side wall of the end of the sampling tube near the bottom wall of the main body of the packaging container.

[0021] The beneficial effects of adopting the above-mentioned further scheme are: by setting the inner side wall of the conical sealing tank body, it is convenient to put the sampling tube into the sealing tank body; the tube wall thickness gradually increases, which facilitates sampling; by setting the positioning hook, it is also convenient to retain the lunar soil sample and prevent the lunar soil sample from falling out of the sampling tube after sampling.

[0022] This invention also provides a method for storing lunar soil samples with axial order preservation and sealing functions, implemented using a lunar soil sample storage container with axial order preservation and sealing functions as described above, comprising the following steps: connecting one end of an operating rod to one end of the sampling tube, using the operating rod to operate the sampling tube to take a sample, after the sampling tube takes a sample, leaving the lunar soil sample inside the sampling tube, removing the sampling tube from the operating rod and fitting it inside the main body of the sealing container, sealing the cover on the main body of the sealing container at the open end of the main body of the sealing container, rotating the axial drive nut to move the axial drive screw axially downward, the axial drive screw driving the pressure plate cover and the sample pressure plate to move downward, the sample pressure plate elastically squeezing the lunar soil sample in the sampling tube under the action of the first spring to perform axial order preservation.

[0023] The beneficial effects of the present invention are: the lunar soil sample storage method of the present invention has a sampling tube that has both sampling and sample encapsulation functions, and can directly encapsulate the sampling tube after sampling, thereby further ensuring the stratification stability of the lunar soil sample.

[0024] This invention achieves axial compaction and sealing of lunar soil samples in a single operation by placing a sample clamping plate and a sealing ring on a clamping plate. The sequencing and sealing drive mechanism uses a screw and nut pair, which effectively reduces the operating force required during sequencing and sealing, and enables triaxial stress control of the sample through axial compaction. A first spring is arranged on the upper part of the lunar soil sample clamping plate, allowing the height of the sample clamping plate to adaptively adjust with the height of the sealed lunar soil sample. By setting up a two-stage sealing structure of radial sealing with double O-rings and axial sealing with sealing gaskets, the reliability of the sample sealing can be effectively improved, reducing the impact of external environmental factors such as humidity and atmospheric pressure changes on the internal sample. The material of the lunar soil sample storage container of this invention takes into account sample compatibility. The surface material of the rock contact parts needs to be selected with the lowest possible contamination to extraterrestrial rock samples, including metal elements (Cu, Ni, Mo, Zn, V, Co, W, Cr, Ga, Mn, etc.) and organic matter (such as glycine, L-alanine, aminoisobutyric acid), and the component ratios need to be strictly controlled. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the lunar soil sample storage container with axial order preservation and sealing functions of the present invention in the closed state; Figure 2 This is a three-dimensional structural diagram of the lunar soil sample storage container with axial order preservation and sealing functions of the present invention in its open state; Figure 3 This is a cross-sectional structural diagram of the lunar soil sample storage container with axial order preservation and sealing functions of the present invention in its initial state. Figure 4 This is a cross-sectional structural diagram of the lunar soil sample storage container with axial order preservation and sealing functions of the present invention in use.

[0026] The attached diagram lists the components represented by each number as follows: 100. Main body of the sealing container; 101. Top cover hook; 102. Second spring; 103. Unlock button; 104. Button baffle; 200. Cover; 201. Hinge shaft; 202. Torsion spring; 203. Handle; 204. Axial drive nut; 205. Axial drive screw; 206. Pressure plate cover; 207. First spring; 208. Sample pressure plate; 209. Bushing; 210. First sleeve; 211. Second sleeve; 212. Limiting plate; 213. Second limiting edge; 214. Sealing cylinder; 215. Sealing ring; 216. Second annular sealing gap; 217. Annular sealing gasket; 218. Bolt; 300. Sampling tube; 301. First annular sealing gap; 302. Positioning hook; 400. Lunar soil sample. Detailed Implementation

[0027] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0028] Example 1 like Figures 1-4 As shown, this embodiment of a lunar soil sample storage container with axial order preservation and sealing functions includes a sealing container body 100, a sampling tube 300, and a cover 200. The sampling tube 300 can be adapted to be installed inside the sealing container body 100 from the open end. The cover 200 is openably and sealingly installed at the open end of the sealing container body 100. An axial drive nut 204 is rotatably installed inside the cover 200, and the axial drive nut 204 is internally threaded with an axial drive... A lead screw 205 is provided, with a pressure plate cover 206 fixed at one end near the main body 100 of the packaging container. The pressure plate cover 206 is elastically connected to the sample pressure plate 208 via a first spring 207. The axial drive nut can drive the axial drive screw to move axially, so that the pressure plate cover 206 is sealed to the main body 100 of the packaging container and the sampling tube 300 respectively. The sample pressure plate 208 can be adapted to extend into the sampling tube 300 to axially compress the packaged lunar soil sample.

[0029] Specifically, such as Figure 3 and Figure 4As shown, the axial drive nut 204 is rotatably mounted inside the cover 200 via a bushing 209 or a bearing, and both the axial drive nut 204 and the axial drive screw 205 are coaxially arranged with the main body 100 of the encapsulation tank.

[0030] like Figure 3 and Figure 4 As shown, in this embodiment, the pressure plate cover 206 is arranged perpendicularly to the axial drive screw 205, and the sample pressure plate 208 is arranged perpendicularly to the axial drive screw 205.

[0031] Specifically, such as Figures 1-4 As shown, one end of the cover 200 is hinged to the open end of the packaging container body 100, and the other end of the cover 200 is engaged with the upper outer wall of the packaging container body 100 via a snap-fit ​​assembly. One end of the cover 200 is hinged to the open end of the packaging container body 100 via a hinge shaft 201. A torsion spring 202 is sleeved on the hinge shaft 201. When the snap-fit ​​assembly between the cover 200 and the packaging container body 100 is released, the cover 200 can automatically open under the action of the torsion spring 202. A handle 203 can be provided on the cover 200, and the handle 203 can be located on both sides of the axial drive nut 204 for convenient hand operation. The axial drive nut 204 can be rotated clockwise or counterclockwise by operating the handle 203 to seal or unseal.

[0032] Specifically, the snap-fit ​​assembly in this embodiment includes a top cover hook 101, a second spring 102, an unlock button 103, and a button baffle 104. A radially extending guide cylinder is provided on the upper side wall of the encapsulation can body 100. The guide cylinder and the hinge shaft 201 are located on opposite sides of the upper end of the encapsulation can body 100. A radially extending second spring 102 is installed inside the guide cylinder. The unlock button 103 is elastically slidably mounted inside the guide cylinder via the second spring 102. The upper part of the unlock button 103... A top cover hook 101 is fixed to the side. The top cover hook 101 extends upward and has a snap-fit ​​protrusion on the side facing away from the main body 100 of the packaging container. A button baffle 104 is provided on the cover 200 at a position corresponding to the top cover hook 101, facing downward. A snap-fit ​​groove is formed between the button baffle 104 and the peripheral wall of the cover 200. A snap-fit ​​protrusion is provided on the lower end of the button baffle 104 facing the cover 200. The top cover hook 101 can be inserted into the snap-fit ​​groove and hooked onto the snap-fit ​​protrusion. By pressing the cover 200, the top cover hook 101 can automatically slide into the snap-fit ​​groove and the snap-fit ​​protrusion can be engaged with the snap-fit ​​protrusion. Then, by turning the axial drive nut 204 to drive the axial drive screw 205, a sealing connection is achieved between the cover 200, the main body 100 of the packaging container, and the sampling tube 300. When it is necessary to open the cover 200, press the unlock button 103 to release the locking limit between the locking boss and the locking protrusion, and the cover 200 will open automatically under the action of the torsion spring 202.

[0033] like Figure 3 and Figure 4 As shown, in a preferred embodiment, the inner diameter of the inner wall of the packaging container 100 gradually increases from the bottom wall to the open end, and the wall thickness of the sampling tube 300 gradually increases. The outer wall of the sampling tube 300 is adapted to abut against the inner wall of the packaging container 100, and a positioning hook 302 is provided on the inner wall of the end of the sampling tube 300 near the bottom wall of the packaging container 100. By setting the conical inner wall of the packaging container, it is convenient to insert the sampling tube into the packaging container; the gradually increasing wall thickness of the sampling tube facilitates sampling, and the positioning hook also facilitates the retention of lunar soil samples and prevents the lunar soil sample 400 from falling out of the sampling tube after sampling.

[0034] In this embodiment, the sampling tube 300 has an internal thread on the inner side of its upper end to facilitate connection with the operating rod. The inner surface of the upper end of the sampling tube 300 is tapered, giving the upper end of the sampling tube 300 a blade-shaped structure for easy insertion and sealing.

[0035] This embodiment reduces soil porosity by adding an axial compression mechanism to the lunar soil storage container to apply axial pressure to the encapsulated lunar soil sample, thereby mitigating the impact of transportation on the sample stratigraphy. This further protects the stratigraphy of the lunar soil sample after encapsulation. Furthermore, a sealing structure is used to reduce the impact of external environmental changes on the internal sample.

[0036] Example 2 Based on Embodiment 1, this embodiment provides a preferred assembly structure for the first spring 207. For example... Figure 3 and Figure 4 As shown, a first sleeve 210 is fixed to the middle of the side of the pressure plate cover 206 opposite to the axial drive screw 205, and a second sleeve 211 is fixed to the middle of the side of the sample pressure plate 208 near the pressure plate cover 206. The second sleeve 211 is sleeved inside the first sleeve 210. The first spring 207 is installed in the first sleeve 210 and the second sleeve 211 and abuts against the pressure plate cover 206 and the sample pressure plate 208, respectively. By setting the first sleeve and the second sleeve, the spring can be stably connected between the pressure plate cover and the sample pressure plate.

[0037] Preferred, such as Figure 3 and Figure 4 As shown, the inner circumferential edge of the lower end of the first sleeve 210 is provided with a first limiting edge, and the outer circumferential edge of the upper end of the second sleeve 211 is provided with a second limiting edge 213. When the second sleeve 211 moves downward to its limit position, the second limiting edge 213 abuts against the first limiting edge. By setting the first and second limiting edges, the second sleeve is prevented from detaching from the first sleeve during use.

[0038] Specifically, such as Figure 3 and Figure 4 As shown, in this embodiment, the first limiting edge can be formed by fixing an annular limiting plate 212 to the lower end of the first sleeve 210. The inner annular edge of the limiting plate 212 extends into the first sleeve 210 by a predetermined length as the first limiting edge. The limiting plate 212 can be fixed to the lower end face of the first sleeve 210 by bolts 218.

[0039] Example 3 Based on Embodiment 1 or Embodiment 2, this embodiment provides a preferred sealing structure between the sampling tube 300 and the open end of the encapsulation container body 100. For example... Figure 3 and Figure 4As shown, a first annular sealing gap 301 is reserved between the upper outer peripheral wall of the sampling tube 300 and the upper inner peripheral wall of the packaging can body 100. A sealing cylinder 214 is fixed on the side of the pressure plate cover 206 away from the axial drive screw 205. The sealing cylinder 214 is located at the peripheral edge of the pressure plate cover 206. A second annular sealing gap 216 is reserved between the sealing cylinder 214 and the first sleeve 210. A sealing ring 215 is installed on the outer peripheral wall of the sealing cylinder 214. The sealing cylinder 214 is inserted into the first annular sealing gap. The sealing cylinder 214 is sealed and abuts against the inner wall of the open end of the packaging can body 100 through the sealing ring 215. The upper end of the sampling tube 300 is inserted into the second annular sealing gap 216. By setting the sealing ring and the annular sealing gap, a stable and effective seal can be achieved between the open end of the packaging can body and the sampling tube.

[0040] Further preferred, such as Figure 3 and Figure 4 As shown, an annular sealing gasket 217 is installed on the side of the pressure plate cover 206 opposite to the axial drive screw 205. The annular sealing gasket 217 is adapted to be installed on the bottom wall of the second annular sealing interval 216, and the upper end of the sampling tube 300 is sealed against the annular sealing gasket 217. By setting the annular sealing gasket, an additional layer of sealing can be added between the upper end of the sampling tube and the pressure plate cover, thereby increasing the sealing effect.

[0041] Example 4 This embodiment provides a method for storing lunar soil samples with axial order preservation and sealing functions, implemented using a lunar soil sample storage container with axial order preservation and sealing functions as described in any of the above embodiments. The method includes the following steps: connecting one end of an operating rod to one end of the sampling tube 300; using the operating rod to operate the sampling tube 300 to take a sample; after sampling, the lunar soil sample remains inside the sampling tube 300; removing the sampling tube 300 from the operating rod and fitting it inside the sealing container body 100; sealing the cover 200 on the sealing container body 100 at the open end of the sealing container body 100; rotating the axial drive nut 204 to cause the axial drive screw 205 to move axially downwards; the axial drive screw 205 drives the pressure plate cover 206 and the sample pressure plate 208 to move downwards; the sample pressure plate 208, under the action of the first spring 207, elastically presses the upper part of the lunar soil sample 400 inside the sampling tube 300 to perform axial order preservation. The sample pressure plate applies a certain axial pressure to the encapsulated sample under the action of the first spring. The spring force of the first spring and the position of the sample pressure plate can be adjusted according to the amount of lunar soil sample encapsulated in the sampling tube.

[0042] The lunar soil sample storage method of this embodiment uses a sampling tube that has both sampling and sample encapsulation functions, enabling direct encapsulation of the sampling tube after sampling, thereby further ensuring the stratigraphic stability of the lunar soil sample.

[0043] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "axial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are 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 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 this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A lunar soil sample storage container with axial preservation and sealing functions, characterized in that, The device includes a packaging container body, a sampling tube, and a cover. The sampling tube is adapted to be installed inside the packaging container body from its open end. The cover is openable and sealed to the open end of the packaging container body. An axial drive nut is rotatably installed inside the cover. An axial drive screw is internally threaded into the axial drive nut. A pressure plate cover is fixed to one end of the axial drive screw near the packaging container body. The pressure plate cover is elastically connected to a sample pressure plate via a first spring. The axial drive nut can drive the axial drive screw to move axially, so that the pressure plate cover is sealed to both the packaging container body and the sampling tube. The sample pressure plate can be adapted to extend into the sampling tube to axially compress the packaged lunar soil sample. A first sleeve is fixed in the middle of the side of the pressure plate cover away from the axial drive screw, and a second sleeve is fixed in the middle of the side of the sample pressure plate near the pressure plate cover. The second sleeve is sleeved inside the first sleeve, and the first spring is installed in the first sleeve and the second sleeve and abuts against the pressure plate cover and the sample pressure plate respectively. A first annular sealing gap is reserved between the upper outer peripheral sidewall of the sampling tube and the upper inner peripheral sidewall of the packaging can body. A sealing cylinder is fixed on the side of the pressure plate cover away from the axial drive screw. The sealing cylinder is located at the peripheral edge of the pressure plate cover. A second annular sealing gap is reserved between the sealing cylinder and the first sleeve. A sealing ring is installed on the outer peripheral sidewall of the sealing cylinder. The sealing cylinder is inserted into the first annular sealing gap. The sealing cylinder is sealed and abutted against the inner sidewall of the open end of the packaging can body through the sealing ring. The upper end of the sampling tube is inserted into the second annular sealing gap.

2. The lunar soil sample storage container with axial order preservation and sealing functions according to claim 1, characterized in that, The axial drive nut is rotatably mounted in the cover body via a bushing or bearing, and both the axial drive nut and the axial drive screw are arranged coaxially with the main body of the packaging can.

3. The lunar soil sample storage container with axial order preservation and sealing functions according to claim 1, characterized in that, The lower end of the first sleeve has a first limiting edge on its inner circumferential side, and the upper end of the second sleeve has a second limiting edge on its outer circumferential side. When the second sleeve moves downward to its limit position, the second limiting edge abuts against the first limiting edge.

4. The lunar soil sample storage container with axial order preservation and sealing functions according to claim 1, characterized in that, An annular sealing gasket is installed on the side of the pressure plate cover away from the axial drive screw. The annular sealing gasket is adapted to be installed on the bottom wall of the second annular sealing interval, and the upper end of the sampling tube is sealed against the annular sealing gasket.

5. The lunar soil sample storage container with axial order preservation and sealing functions according to claim 1, characterized in that, The pressure plate cover is arranged perpendicularly to the axial drive screw, and the sample pressure plate is arranged perpendicularly to the axial drive screw.

6. The lunar soil sample storage container with axial order preservation and sealing functions according to claim 1, characterized in that, One end of the cover is hinged to the open end of the main body of the packaging can, and the other end of the cover is snapped to the upper outer wall of the main body of the packaging can via a snap-fit ​​assembly.

7. The lunar soil sample storage container with axial order preservation and sealing functions according to claim 1, characterized in that, From the bottom wall of the main body of the packaging container to the open end, the inner diameter of the inner side wall of the main body of the packaging container gradually increases, and the wall thickness of the sampling tube gradually increases; the outer side wall of the sampling tube is adapted to abut against the inner side wall of the main body of the packaging container, and a positioning hook is provided on the inner side wall of the end of the sampling tube near the bottom wall of the main body of the packaging container.

8. A method for storing lunar soil samples with axial order preservation and sealing functions, characterized in that, The lunar soil sample storage container with axial order preservation and sealing functions as described in any one of claims 1 to 7 is used, comprising the following steps: connecting one end of an operating rod to one end of the sampling tube, using the operating rod to operate the sampling tube to take a sample, after the sampling tube takes a sample, the lunar soil sample remains in the sampling tube, removing the sampling tube from the operating rod and fitting it into the main body of the sealing container, sealing the cover on the main body of the sealing container at the open end of the main body of the sealing container, rotating the axial drive nut to make the axial drive screw move axially downward, the axial drive screw drives the pressure plate cover and the sample pressure plate to move downward, and the sample pressure plate elastically squeezes the lunar soil sample in the sampling tube under the action of the first spring to perform axial order preservation.

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