Double ratchet reversing in-situ stellar soil micro-quantitative sampler, device and method for stellar soil volatile detection

Abstract

The present invention discloses a double-ratchet reversing in-situ micro-quantitative sampler, device, and method for detecting volatiles in star soil. The device relates to the field of aerospace technology and solves the problems of existing in-situ sampling and detection devices, such as complex structures, long sampling time intervals, and inconsistent sampling volumes during multiple samplings. The device comprises a screw, a sample delivery ratchet, a sampling ratchet, a housing, a sampling shaft, and a sampling tube. The upper end of the screw is coaxially mounted within the sampling shaft via the sampling ratchet, and the lower end extends into the sampling tube. The upper end of the sampling shaft is mounted within the housing, with a sample delivery ratchet mounted between the sampling shaft and the housing, and the lower end of the sampling shaft is fixedly connected to the sampling tube. A plurality of absorbing plates are mounted on the screw. The sample delivery and sampling ratchets engage in opposite directions, allowing the screw to drive the absorbing plates to achieve sampling and sliding functions by switching their rotational directions. The present invention enables efficient and uninterrupted multiple sampling, accurately controls the sampling volume, maintains consistency between multiple samplings, and improves sampling efficiency.

Description

Technical Field

[0001] The present invention relates to the field of aerospace technology, and in particular to a double-ratchet reversing in-situ stellar soil micro-quantitative sampler, device and method for detecting volatiles in stellar soil. Background Art

[0002] Deep space exploration refers to human exploration of the Moon and other celestial bodies, or the space environment, beyond. As a key direction of human spaceflight and a crucial avenue for innovation in space science and technology, it is a key priority for current and future space development. Deep space exploration reflects not only a country's scientific and technological prowess but also its overall national strength.

[0003] Currently, the primary target of human deep space exploration is Earth's only natural satellite: the Moon. The composition of lunar surface regolith is a key research topic in lunar exploration. Currently, there are three mainstream exploration methods: remote sensing, sample return analysis, and in-situ sampling and detection. Compared to the issues of contamination control and high engineering costs associated with sample return analysis, in-situ detection of regolith offers advantages. In-situ sampling and detection devices are typically carried on lunar landers, rovers, and other intelligent equipment. They utilize sampling equipment to obtain surface or subsurface regolith samples and transfer them to analytical instruments for on-site analysis. However, existing in-situ sampling and detection devices generally utilize coring and surface excavation. This sampling method cannot continuously and uninterruptedly perform multiple sampling operations, accurately control the sampling volume, or guarantee consistent sampling between multiple sampling attempts. Summary of the Invention

[0004] In order to better complete the tasks of star soil sample collection and volatile detection, the present invention solves the problems that the sampling method of the existing in-situ sampling and detection device cannot perform multiple samplings continuously and uninterruptedly, the time interval between two adjacent samplings is long, the sampling amount of the sample cannot be accurately controlled, and the consistency of the sampling amount between multiple samplings cannot be guaranteed. A double ratchet reversing in-situ star soil micro-quantitative sampler, device and method for star soil volatile detection is specially proposed. The sampler proposed in the present invention can perform multiple sample collections continuously, and at the same time, it can accurately control the sampling amount of star soil in conjunction with the absorption sheet, effectively ensuring the consistency of the sampling amount between multiple collections. At the same time, the double ratchet reversing in-situ star soil micro-quantitative sampler proposed in the present invention realizes different driving effects on the absorption sheet in different rotation directions through the ratchet structure set, effectively shortening the time between two adjacent samplings and improving sampling efficiency.

[0005] The present invention proposes a double-ratchet reversing in-situ star soil micro-quantitative sampler for star soil volatile detection, comprising a screw, a sample delivery ratchet, a sampling ratchet, a housing, a sampling shaft and a sampling tube. The upper end of the screw is coaxially mounted inside the sampling shaft through the sampling ratchet, and the lower end coaxially extends into the sampling tube; the upper end of the sampling shaft is coaxially mounted in the housing, a sample delivery ratchet is mounted between the sampling shaft and the housing, and the lower end of the sampling shaft is coaxially fixed to the sampling tube; a plurality of absorbing sheets are mounted on the screw; the sample delivery ratchet and the sampling ratchet engage in opposite directions, so that the screw rotates forward to drive the absorbing sheet to sample, and the screw rotates reversely to drive the absorbing sheet to slide out.

[0006] Furthermore, the sample feeding ratchet includes sample feeding gear teeth and sample feeding pawls, the sample feeding gear teeth are installed on the outside of the sampling shaft, and the sample feeding pawls are installed on the inside of the shell.

[0007] Furthermore, the sampling ratchet includes sampling gear teeth and a sampling pawl, the sampling gear teeth are installed on the inner side of the sampling shaft, and the sampling pawl is installed on the screw.

[0008] Furthermore, the screw is driven by a motor to achieve forward and reverse rotation switching of the screw.

[0009] Furthermore, the inner surface of the absorbing sheet is provided with threads and cooperates with the screw.

[0010] Furthermore, a plurality of bosses are provided on the absorbing sheet.

[0011] Furthermore, a plurality of grooves are provided on the inner surface of the sampling tube, and the sampling tube drives the absorbing sheet to rotate through the cooperation between the grooves and the bosses.

[0012] Furthermore, the screw and the sampling shaft have no threads at the mating portion.

[0013] A sampling device using the above-mentioned double ratchet reversing in-situ micro-quantitative sampler for detecting star soil volatiles includes a double ratchet reversing in-situ micro-quantitative sampler for detecting star soil volatiles and a plurality of absorbing sheets, wherein the absorbing sheets are sleeved on a screw, a plurality of boss structures are provided on the outer surface of the absorbing sheet and rotate in cooperation with the grooves in the sampling tube, and a thread is provided on the inner surface of the absorbing sheet and engages with the screw.

[0014] A sampling method using the double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil comprises the following steps:

[0015] a. The screw rotates forward, the sample feeding ratchet pawl slides relative to the gear teeth, and the sampling ratchet engages;

[0016] b. The screw drives the sampling shaft, sampling tube and absorbing sheet to rotate together through the sampling ratchet to start sampling;

[0017] c. After sampling is completed, the screw is reversed, the sample delivery ratchet engages, and the sampling ratchet pawl slides relative to the gear teeth;

[0018] d. The sampling shaft, sampling tube and absorbing sheet stop rotating, and the absorbing sheet slides out of the sampling tube;

[0019] e. Repeat steps a to d.

[0020] The double ratchet reversing in-situ micro-quantitative sampler, device, and method for detecting volatiles in star soil described in the present invention have the following beneficial effects:

[0021] (1) The double ratchet reversing in-situ micro-quantitative sampler, device, and method for detecting volatiles in star soil described in the present invention can realize continuous and multiple sampling by cooperating with an absorbent sheet, while accurately controlling the sampling volume and ensuring that the sampling volume of multiple samplings remains consistent, thereby realizing constant-volume quantitative sampling of star soil;

[0022] (2) The double ratchet reversing in-situ micro-quantitative sampler, device and method for detecting volatiles in star soil described in the present invention realize continuous and uninterrupted automatic sampling through the double ratchet transmission structure, thereby shortening the interval between two adjacent samplings. At the same time, it simplifies the transmission structure of the device, making the structure more compact and taking up less space. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] In the attached figure:

[0025] Figure 1 This is a schematic cross-sectional view of a double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil according to the present invention;

[0026] Figure 2 This is a schematic diagram of the right side structure of a double ratchet reversing in-situ micro quantitative sampler for detecting volatiles in star soil according to the present invention;

[0027] Figure 3 This is a schematic cross-sectional view of the left partial structure of a double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil according to the present invention;

[0028] Figure 4 This is a schematic diagram of the sample delivery ratchet structure of a double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil, as described in the present invention;

[0029] Figure 5This is a schematic diagram of the sampling ratchet structure of a double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil, as described in the present invention;

[0030] Among them: 1-motor shaft, 2-screw, 3-absorbing plate, 4-housing, 5-sample feeding ratchet, 51-sample feeding gear, 52-sample feeding claw, 6-sampling ratchet, 61-sampling gear, 62-sampling claw, 7-sampling shaft, 8-sampling tube, 9-bearing. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0032] Specific implementation method 1: See Figure 1-5 The present embodiment is described. The double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil described in this embodiment comprises a motor shaft 1, a screw 2, two ratchets, a housing 4, a sampling shaft 7 and a sampling tube 8. The upper end of the screw 2 is coaxially mounted on the inside of the sampling shaft 8 via the sampling ratchet 6. At the same time, the mating portion of the screw 2 and the sampling shaft 8 is non-threaded. The upper end of the screw 2 is connected to the motor shaft 1 and the motor shaft 1 drives the screw 2 to rotate. At the same time, the lower end of the screw 2 coaxially extends into the sampling tube 8. The motor shaft 1 and the housing 4 are connected via a bearing 9. Dynamic connection; the upper end of the sampling shaft 7 is coaxially rotatably installed in the housing 4 through a bearing 9, and a sample feeding ratchet 5 is also installed between the sampling shaft 7 and the housing 4, and the lower end of the sampling shaft 7 is coaxially fixedly connected to the sampling tube 8; a number of absorbing sheets 3 are coaxially installed on the screw 2, and the inner surface of the absorbing sheet 3 is provided with a thread and meshes with the screw 2; the sampling ratchet 6 and the sample feeding ratchet 5 engage in opposite directions, so that the screw 2 switches the rotation direction, thereby driving the absorbing sheet 3 to realize the sampling and sliding out functions, effectively shortening the time interval between two adjacent samplings.

[0033] The sample feeding ratchet 5 is installed between the sampling shaft 7 and the housing 4, and the sampling ratchet 6 is installed between the screw 2 and the sampling shaft 7; the sample feeding ratchet 5 includes a sample feeding wheel tooth 51 and a sample feeding pawl 52, the sample feeding wheel tooth 51 is installed on the outside of the sampling shaft 7, and the sample feeding pawl 52 is installed on the inside of the housing 4; the sampling ratchet 6 includes a sampling wheel tooth 61 and a sampling pawl 62, the sampling wheel tooth 61 is installed on the inside of the sampling shaft 7, and the sampling pawl 62 is installed on the screw 2; the sample feeding wheel tooth 51 faces outward, and the sampling wheel tooth 61 faces inward. When the device is sampling, the sample feeding wheel tooth 51 set on the sample feeding ratchet 5 rotates and slides relative to the sample feeding pawl 52, and the sampling pawl 62 set on the sampling ratchet 6 and the sampling wheel tooth 61 are engaged and locked; when the device is feeding samples, the sample feeding pawl 52 set on the sample feeding ratchet 5 and the sample feeding wheel tooth 51 are engaged and locked, and the sampling pawl 62 set on the sampling ratchet 6 rotates and slides relative to the sampling wheel tooth 61.

[0034] The inner surface of the absorbing sheet 3 is provided with a thread and cooperates with the screw 2. When the absorbing sheet 3 and the screw 2 rotate relative to each other, the absorbing sheet 3 can slide down from the screw 2 through the thread engagement and escape from the lower end outlet of the sampler.

[0035] The outer surface of the absorbing sheet 3 is provided with a plurality of boss structures, and the inner surface of the sampling tube 8 is provided with a plurality of grooves. The sampling tube 8 drives the absorbing sheet 3 to rotate through the cooperation between the grooves and the boss structures.

[0036] The mating portion between the screw rod 2 and the sampling shaft 7 is free of threads, thereby ensuring that the sampling pawl 62 of the sampling ratchet 6 can be stably mounted on the screw rod 2 .

[0037] A sampling device using the above-mentioned double ratchet reversing in-situ star soil micro-quantitative sampler for star soil volatile detection includes a double ratchet reversing in-situ star soil micro-quantitative sampler for star soil volatile detection and a plurality of absorbing sheets 3, wherein the plurality of absorbing sheets 3 are sleeved on a screw 2, and a plurality of boss structures are provided on the outer surface of the absorbing sheet 3, which slide in cooperation with the grooves provided in the sampling tube 8 so that the absorbing sheet 3 and the sampling tube 8 maintain the same rotation state, thereby completing the fixed-volume quantitative sampling of star soil; the inner surface of the absorbing sheet 3 is provided with a thread and engages with the screw 2 so that the absorbing sheet 3 will not slip out of the sampling tube 8 during the sampling process, and at the same time, during the sample delivery process, the absorbing sheet 3 and the screw 2 rotate relative to each other and slide downward through the thread engagement so that the absorbing sheet 3 is out of the sampling tube 8.

[0038] A sampling method using the double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil comprises the following steps:

[0039] a. The screw 2 rotates forward, the sample feeding teeth 51 provided on the ratchet 5 rotate and slide relative to the sample feeding finger 52, and the sampling finger 62 and the sampling tooth 61 provided on the sampling ratchet 6 engage and lock;

[0040] b. The screw 2 drives the sampling shaft 7, the sampling tube 8 and the absorbing sheet 3 to rotate together through the sampling ratchet 6 to start sampling;

[0041] c. Sampling is completed, the screw 2 is reversed, the sample feeding pawl 52 and the sample feeding gear teeth 51 on the ratchet 5 are engaged and locked, and the sampling pawl 62 on the sampling ratchet 6 rotates and slides relative to the sampling gear teeth 61;

[0042] d. The sampling shaft 7, the sampling tube 8 and the absorbing sheet 3 stop rotating, and the absorbing sheet 3 slides out of the sampling tube 8 by engaging with the screw thread 2;

[0043] e. Repeat steps a to d.

[0044] The specific working principle of the double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in stellar soil is explained as follows:

[0045] When the double ratchet reversing in-situ star soil micro-quantitative sampler starts sampling, the power device drives the motor shaft 1 to drive the screw 2 to rotate forward. At this time, the sample feeding gear 51 set on the sample feeding ratchet 5 rotates and slides relative to the sample feeding claw 52, ​​and the sampling claw 62 set on the sampling ratchet 6 is engaged and locked with the sampling gear 61; the screw 2 drives the sampling shaft 7, the sampling tube 8 and the absorbing plate 3 to rotate synchronously through the sampling ratchet 6, and the absorbing plate 3 starts constant volume and quantitative sampling. After the absorbing sheet 3 completes sampling, the power device drives the motor shaft 1 to drive the screw 2 to rotate in the opposite direction. At this time, the sample feeding claw 52 on the sample feeding ratchet 5 and the sample feeding wheel tooth 51 are engaged and locked, and the sampling claw 62 on the sampling ratchet 6 rotates and slides relative to the sampling wheel tooth 61. The sampling shaft 7 and the housing 4 are locked through the sample feeding ratchet 5. The groove on the sampling tube 8 and the protrusion structure on the absorbing sheet 3 cooperate to limit the absorbing sheet 3, so that the absorbing sheet 3 cannot rotate circumferentially, so that the sampling shaft 7, the sampling tube 8 and the absorbing sheet 3 stop rotating at the same time, and the screw 2 continues to rotate in the opposite direction and rotates relative to the absorbing sheet 3. Since the absorbing sheet 3 and the screw 2 are engaged through threads, after the relative rotation, the absorbing sheet 3 slides along the axial direction toward the outlet position of the sampling tube 8, so that the absorbing sheet 3 is finally separated from the outlet position of the lower end of the sampling tube 8.

[0046] To summarize the above implementation cases, the double ratchet reversing in-situ star soil micro-quantitative sampler, device and method for star soil volatile detection described in the present application can realize continuous multiple sample sampling by cooperating with the absorption sheet, and can accurately control the sampling volume, and ensure that the sampling volume of multiple samplings remains consistent, thereby realizing constant volume and quantitative sampling of star soil; the double ratchet reversing in-situ star soil micro-quantitative sampler, device and method for star soil volatile detection described in the present invention realize continuous and uninterrupted automatic sampling through the set double ratchet transmission structure, effectively shortening the time interval between two adjacent samplings, and simplifying the transmission structure of the device, making the structure more compact and making the device occupy less space.

[0047] The specific embodiments described above further illustrate the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is merely a specific embodiment of the present invention and is not intended to limit the invention. Reasonable combinations of the features described in the above embodiments are also possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in celestial soil, characterized by: The invention comprises a screw (2), a housing (4), a sample delivery ratchet (5), a sampling ratchet (6), a sampling shaft (7) and a sampling tube (8); the upper end of the screw (2) is coaxially mounted inside the sampling shaft (7) through the sampling ratchet (6), and the lower end coaxially extends into the sampling tube (8); the upper end of the sampling shaft (7) is coaxially mounted inside the housing (4), a sample delivery ratchet (5) is mounted between the sampling shaft (7) and the housing (4), and the lower end of the sampling shaft (7) is fixedly connected to the sampling tube (8); a plurality of absorbing sheets (3) are mounted on the screw (2); the sample delivery ratchet (5) and the sampling ratchet (6) engage in opposite directions, so that the screw (2) rotates forward to drive the absorbing sheet (3) to sample, and the screw (2) rotates backward to drive the absorbing sheet (3) to slide out; The sample feeding ratchet (5) comprises a sample feeding wheel tooth (51) and a sample feeding pawl (52), wherein the sample feeding wheel tooth (51) is mounted on the outside of the sampling shaft (7), and the sample feeding pawl (52) is mounted on the inside of the housing (4); The sampling ratchet (6) comprises a sampling wheel tooth (61) and a sampling claw (62), wherein the sampling wheel tooth (61) is mounted on the inner side of the sampling shaft (7), and the sampling claw (62) is mounted on the screw (2); The inner surface of the sampling tube (8) is provided with a plurality of grooves, and the sampling tube (8) drives the absorbing sheet (3) to rotate through the cooperation between the grooves and the bosses.

2. The double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil according to claim 1, characterized in that: The screw (2) is driven by a motor to achieve forward and reverse switching of the screw (2).

3. The double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil according to claim 1 or 2, characterized in that: The inner surface of the absorbing sheet (3) is provided with threads and cooperates with the screw rod (2).

4. The double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil according to claim 1 or 2, characterized in that: The outer surface of the absorbing sheet (3) is provided with a plurality of bosses.

5. The double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil according to claim 1 or 2, characterized in that: The mating portion between the screw rod (2) and the sampling shaft (7) is free of threads.

6. A sampling device comprising the double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil according to claim 5, characterized in that: The invention comprises a double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil and a plurality of absorbing sheets (3). The absorbing sheets (3) are sleeved on a screw (2). The outer surface of the absorbing sheet (3) is provided with a plurality of boss structures and rotates in conjunction with a sampling tube (8). The inner surface of the absorbing sheet (3) is provided with a thread and meshes with the screw (2).

7. A sampling method comprising the double ratchet reversing in-situ micro-quantitative sampler for detecting volatiles in star soil according to claim 5, characterized in that: The specific steps include: a. The screw (2) rotates forward, the sample delivery ratchet (5) slides, and the sampling ratchet (6) engages; b. The screw (2) drives the sampling shaft (7), the sampling tube (8) and the absorbing sheet (3) to rotate together through the sampling ratchet (6) to start sampling; c. When sampling is completed, the screw (2) is reversed, the sample delivery ratchet (5) is engaged, and the sampling ratchet (6) slides; d. The screw (2) continues to reverse, the sampling shaft (7), the sampling tube (8) and the absorbing sheet (3) stop rotating, and the absorbing sheet (3) slides out of the sampling tube (8); e. Repeat steps a to d.

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