Rare earth-containing mineral particle sampling device and method for geological exploration of rare earth ore in deep coverage area

Abstract

The invention discloses a rare earth-containing mineral particle sampling device and method for geological exploration of rare earth ore in a deep coverage area, and belongs to the technical field of rare earth ore sampling. Wherein the sampling device comprises a feeding mechanism, a movable pipeline, a base pipeline, an air suction assembly, a chip mounting mechanism, a storage bin and a stacking mechanism, the storage bin is located at the bottom in a sampling shell, and the stacking mechanism is used for continuously stacking chip-mounted particle collecting films in the storage bin. According to the sampling device, the bottom storage bin is matched with the stacking mechanism to achieve longitudinal stacking of the samples, compared with an existing single-piece transverse tiling storage mode, transverse space is not occupied, the sampling device is suitable for narrow operation scenes, and the sample storage amount in the same sampling device size is larger; moreover, the feeding mechanism can continuously supply the particle collecting film downwards, and the stacking mechanism can continuously store the sealed sample, so that the sampling operation does not need to be frequently interrupted, and the exploration efficiency of the rare earth ore in the deep coverage area is effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of rare earth ore sampling technology, and specifically relates to a sampling device and method for rare earth mineral particles in geological exploration of rare earth mines in deeply covered areas. Background Technology

[0002] In the field of aerosol sampling at a fixed depth in rare earth mineral geological exploration in deeply covered areas, existing sampling devices mostly use a single-piece collection membrane combined with a continuous ejection structure to complete sampling. For example, Chinese patent with publication number CN117309508A discloses a sampling device and method for rare earth mineral particles in thick soil-covered areas of rare earth mines. This patented technical solution achieves continuous sampling at multiple depths by continuously ejecting a single-piece collection membrane, and then stores the single-piece collection membrane laterally by continuously ejecting it laterally.

[0003] However, sampling devices for deep-coverage areas often need to be adapted to narrow operating environments such as downholes and boreholes. The overall lateral dimensions of the sampling device are strictly limited by the wellbore and borehole diameter, resulting in limited lateral space available for storing the sampling membrane. In the aforementioned patented technologies, each sampling membrane needs to be laid flat in a horizontal position in a dedicated storage tank or tray, with each membrane occupying independent lateral space. This leads to a low membrane storage capacity within the sampling device. Due to the limited membrane storage capacity of existing sampling devices, it is difficult to achieve continuous sampling of large quantities of samples. Frequent interruptions are required during sampling to disassemble the sampling device to replenish the membrane or collect and organize the sampled samples, reducing exploration efficiency. Summary of the Invention

[0004] In view of the above analysis, the present invention aims to provide a sampling device and method for rare earth mineral particles in geological exploration of rare earth minerals in deep-covered areas, so as to solve one or more of the above-mentioned problems in the prior art.

[0005] The objective of this invention is achieved as follows:

[0006] A rare earth mineral particle sampling device for geological exploration of rare earth deposits in deeply overburdened areas, comprising:

[0007] The feeding mechanism is located inside the upper part of the sampling shell and is used to continuously supply the particle collection membrane downwards;

[0008] The negative pressure sampling mechanism includes a movable pipe, a base pipe, and an air intake component disposed within a sampling housing. The air intake component is connected to the base pipe. The movable pipe and the base pipe are located on opposite sides of the particle collection membrane. The movable pipe is connected to an air inlet on the sampling housing. The movable pipe can move toward the base pipe to bring the particle collection membrane against one end of the base pipe.

[0009] The patching mechanism, located below the movable pipe, is used to patch and seal the sample area of ​​the particle collection membrane.

[0010] The storage compartment is located inside the sampling housing and below the patching mechanism; the storage compartment is equipped with a stacking mechanism for continuously stacking multiple patch-sealed particle collection membranes in the storage compartment.

[0011] Furthermore, the feeding mechanism includes a feeding box and a feeding shaft. The feeding shaft is rotatably connected to the inner wall of the feeding box. The particle collecting membrane is wound around the feeding shaft. The bottom of the feeding box is provided with a discharge hole. The particle collecting membrane passes through the discharge hole. The inner wall of the discharge hole is covered with a protective film. The particle collecting membrane and the protective film are in close contact.

[0012] Furthermore, the feeding mechanism includes a feeding moving mechanism for driving the particle collecting membrane to move downward.

[0013] Furthermore, the feeding and moving mechanism includes a feeding motor, a feeding wheel, and a central shaft. The feeding motor is driven and connected to the central shaft, and the feeding wheels are respectively connected to both ends of the central shaft. The feeding motor, feeding wheel, and central shaft include multiple sets. Each pair of feeding motors, feeding wheels, and central shafts are respectively located on opposite sides of the particle collection membrane. The edges of the front and back sides of the particle collection membrane simultaneously abut against the feeding wheel. The feeding wheel is also provided with a round protrusion, which abuts against the outer edge of the particle collection membrane. The feeding wheel is arranged on the downward extension path of the particle collection membrane.

[0014] Furthermore, the movable pipe includes a first fixed port, a first telescopic pipe, and a second fixed port. The first fixed port, the first telescopic pipe, and the second fixed port are connected in sequence. The first fixed port is connected to an air inlet. An engagement motor is connected to the outside of the second fixed port. The engagement motor can drive the second fixed port to move towards the particle collection membrane, pressing the particle collection membrane against one end of the base pipe. The first fixed port, the first telescopic pipe, the second fixed port, and the base pipe form a sealed channel. There is a gap between the base pipe and the downwardly extending particle collection membrane.

[0015] Furthermore, the stacking mechanism includes:

[0016] The three-axis slide rail module is located on the side of the storage compartment;

[0017] The support arm, connected to the three-axis slide rail module, is used to move the patched particle collection membrane into the storage compartment, and the three-axis slide rail module can drive the support arm to continuously stack the particle collection membrane along a set path.

[0018] Furthermore, all particle collection membranes employ front-facing particle collection.

[0019] Alternatively, when stacking storage bins, particle collection membranes in odd-numbered layers collect particles from the front, while particle collection membranes in even-numbered layers collect particles from the back.

[0020] Furthermore, the patch assembly includes:

[0021] Two patch boxes are respectively located on the front and back sides of the particle collection membrane, and the patch boxes have an opening on the side facing the particle collection membrane.

[0022] The crimping motor is located on the side of the patch box away from the particle collection membrane, and the telescopic shaft of the crimping motor passes through the patch box.

[0023] A covering membrane is placed in a patch box located on one side of the particle collection membrane;

[0024] The mating frame is located in the patch box on the other side;

[0025] The pressing motor can drive the cover film and the docking frame to move toward the particle collection membrane, so that the cover film, the particle collection membrane and the docking frame are pressed together.

[0026] Furthermore, the patching mechanism also includes a separation mechanism located on the patch cassette for separating the cover film and mating edge from their respective patch cassettes.

[0027] This invention also provides a method for sampling rare earth mineral particles in geological exploration of rare earth deposits in deeply overburdened areas. The method utilizes the sampling device for rare earth mineral particles in geological exploration of rare earth deposits in deeply overburdened areas as described above to sample rare earth mineral particles in deeply overburdened areas. The sampling method includes the following steps:

[0028] Before the sampling device is lowered into the sampling hole, the wound and stored particle collection membrane is continuously supplied from top to bottom along the set path to ensure that the particle collection membrane remains in a vertically extended state.

[0029] The sampling device is lowered into the sampling hole to the predetermined sampling depth of the rare earth ore in the deep-covered area. The attitude of the sampling device is adjusted so that the air inlet on the side wall of the sampling shell faces the direction of ground gas collection.

[0030] Open the air inlet valve at the air inlet and drive the movable pipe to move toward the base pipe, so that the movable pipe and the base pipe clamp the particle collection membrane from the front and back sides respectively, and hold and fix the particle collection membrane against one end of the base pipe to form a closed gas channel.

[0031] The air intake assembly is activated, generating negative pressure in the sealed gas channel through the base pipe. Aerosol particles in the ground air enter the movable pipe through the air inlet. When the particles pass through the particle collection membrane, rare earth mineral particles are intercepted and captured, completing the fixed-depth sampling at that depth.

[0032] After a single sampling is completed, the movable pipe is driven to reverse and reset, releasing the resistance to the particle collection membrane and activating the patching mechanism located below the movable pipe to seal the sample area on the particle collection membrane.

[0033] The sealed particle collection membrane continues to be conveyed downwards under the drive of the feeding mechanism until it enters the storage chamber at the bottom of the sampling shell; the stacking mechanism inside the storage chamber is activated to continuously and orderly stack the sealed particle collection membrane in the storage chamber according to preset rules, so as to achieve centralized collection of samples;

[0034] Repeat the above steps, the feeding mechanism continuously supplies new unsampled particle collection membranes downwards, the movable pipe cooperates with the base pipe again to clamp the new particle collection membranes and build a sealed channel, and sequentially completes continuous fixed-depth sampling at the same depth for multiple batches or at different depths.

[0035] Compared with the prior art, the sampling device and method for rare earth mineral particles in deep-covered rare earth mineral geological exploration provided by the present invention can achieve at least one of the following beneficial effects:

[0036] A. By using a bottom storage compartment in conjunction with a stacking mechanism to achieve vertical sample stacking, compared to the existing single-piece horizontal flat storage mode, it does not occupy horizontal space and increases the sample storage capacity within the same sampling device volume. Moreover, since the sampling device is designed around the vertical film supply and vertical storage, its horizontal dimensions can be adapted to wellbore and borehole diameter limitations, making it highly practical for narrow operating scenarios.

[0037] B. The feeding mechanism can continuously supply the particle collection membrane downwards, and the stacking mechanism can continuously store the sealed samples. There is no need to frequently interrupt the operation to disassemble the sampling device to replenish the collection membrane or collect and sort the samples, which effectively improves the exploration efficiency of rare earth minerals in deep-covered areas.

[0038] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0040] Figure 1This is a schematic diagram of the internal overall structure of the sampling outer shell after the side walls have been removed, as provided by the present invention.

[0041] Figure 2 A schematic diagram of the overall structure of the rare earth mineral particle sampling device for geological exploration of rare earth minerals in deep-covered areas provided by the present invention.

[0042] Figure 3 This is a schematic diagram of the overall structure after removing the sampling shell provided by the present invention.

[0043] Figure 4 for Figure 3 The structural diagram of the feeding mechanism provided in the document;

[0044] Figure 5 for Figure 3 A magnified schematic diagram of a portion of region A in the middle;

[0045] Figure 6 This is a cross-sectional view of the patch mechanism provided by the present invention.

[0046] Figure 7 for Figure 6 A magnified schematic diagram of a portion of region B in the middle;

[0047] Figure 8 This is a schematic diagram of the operation when the first layer of the particle collection membrane is stacked in a storage bin using the second method, as provided by the present invention.

[0048] Figure 9 This is a schematic diagram illustrating the operation of stacking the second layer of the particle collection membrane in a storage bin using the second method provided by the present invention.

[0049] Figure 10 This is a schematic diagram illustrating the operation of stacking the third layer of the particle collection membrane in a storage bin using the first method, as provided by the present invention.

[0050] Figure label:

[0051] 10-Feeding mechanism; 101-Feeding box; 102-Feeding shaft; 103-Discharge hole; 104-Protective film; 11-Sampling shell; 12-Air inlet; 13-Suction assembly; 14-Particle collection membrane;

[0052] 20 - Movable pipe; 21 - Base pipe; 22 - First fixed port; 23 - First telescopic pipe; 24 - Second fixed port;

[0053] 30-Patch assembly; 31-Patch box; 32-Crimping motor; 33-Covering film; 331-Sealing sheet; 332-Connecting edge; 333-Groove; 34-Pressure strip; 35-Connecting protrusion; 36-Connecting point; 37-Cutting linear module; 38-Cutting blade; 39-Cutting position;

[0054] 40 - Storage bay;

[0055] 50 - Stacking mechanism; 51 - Three-axis slide rail module; 52 - Support hand;

[0056] 60 - Feeding motor; 61 - Feeding wheel; 62 - Central shaft. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] To facilitate understanding of the embodiments of this application, further explanation and description will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this application. In the drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0059] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0060] This invention discloses a rare earth mineral particle sampling device for geological exploration of rare earth deposits in deep-covered areas, comprising a feeding mechanism 10, a negative pressure sampling mechanism, a patching mechanism 30, and a storage bin 40; wherein, the feeding mechanism 10 is located inside the upper part of the sampling shell 11 and is used to continuously supply particles to the particle collection membrane 14 downwards; the negative pressure sampling mechanism includes a movable pipe 20, a base pipe 21, and an air suction component 13 located inside the sampling shell 11, the air suction component 13 being connected to the base pipe 21; the movable pipe 20 and the base pipe 21 are located on both sides of the particle collection membrane 14; The movable pipe 20 is connected to the air inlet 12 on the sampling housing 11; the movable pipe 20 can move toward the base pipe 21 to bring the particle collection membrane 14 abut against one end of the base pipe 21; the patching mechanism 30 is located below the movable pipe 20 for patching and sealing the sample area of ​​the particle collection membrane 14; the storage chamber 40 is located inside the sampling housing 11 and below the patching mechanism 30; the storage chamber 40 is provided with a stacking mechanism 50 for continuously stacking multiple patch-sealed particle collection membranes 14 in the storage chamber 40.

[0061] Specifically, such as Figures 1 to 10 As shown, the feeding mechanism 10 is located inside the upper part of the sampling housing 11, for continuously supplying the particle collection membrane 14 downwards; the movable pipe 20 is located in the middle of the sampling housing 11 and on the side corresponding to the front of the particle collection membrane 14. The movable pipe 20 is connected to the air inlet 12 opened on the side wall of the sampling housing 11, wherein the air inlet 12 is provided with an air inlet valve; the base pipe 21 is located in the middle of the sampling housing 11 and on the side corresponding to the back of the particle collection membrane 14. The base pipe 21 and the movable pipe 20 are positioned opposite each other, and the movable pipe 20 can be directed towards... The base pipe 21 moves in a direction to bring the particle collection membrane 14 abut against one end of the base pipe 21; the suction assembly 13, such as a vacuum pump, is connected to the other end of the base pipe 21 for extracting gas from the base pipe 21; the patching mechanism 30 is located below the movable pipe 20 for patching and sealing the sample area of ​​the particle collection membrane 14; the storage chamber 40 is located at the bottom inside the sampling housing 11 and below the patching mechanism 30; the stacking mechanism 50 is located in the storage chamber 40 for continuously stacking the patched particle collection membrane 14 in the storage chamber 40.

[0062] Before the sampling device is lowered into the sampling hole, the feeding mechanism 10 is initialized, continuously supplying the wound and stored particle collection membrane 14 downwards along a set path to ensure that the particle collection membrane 14 extends vertically, reserving an effective area for subsequent sampling. The sampling device is lowered into the sampling hole to the predetermined sampling depth of rare earth ore in the deep-covered area, with the air inlet 12 facing the direction of ground gas collection. The air inlet valve at the air inlet 12 is opened, driving the movable pipe 20 to move towards the base pipe 21, so that the movable pipe 20 and the base pipe 21 clamp the collection membrane from the front and back sides of the particle collection membrane 14 respectively, and finally hold and fix the particle collection membrane 14 against one end of the base pipe 21, forming a closed gas channel. The suction component 13 is activated, generating negative pressure in the closed channel through the base pipe 21. Aerosol particles enter the movable pipe 20 through the air inlet 12. When passing through the particle collection membrane 14, the mineral particles are intercepted and captured, completing the fixed-depth sampling at this depth. After a single sampling is completed, the movable pipe 20 reverses and resets, releasing its restraint on the particle collection membrane 14. The patching mechanism 30 located below it then activates to seal the sample area on the particle collection membrane 14. The sealed particle collection membrane 14 continues to be conveyed downwards under the drive of the feeding mechanism 10, entering the storage chamber 40 at the bottom of the sampling housing 11. The stacking mechanism 50 inside the storage chamber 40 activates, continuously and orderly stacking the sealed particle collection membranes 14 in the storage chamber 40 according to a preset rule, achieving centralized sample collection. Repeating the above steps, the feeding mechanism 10 continuously supplies new unsampled particle collection membranes 14 downwards, and the movable pipe 20 again cooperates with the base pipe 21 to clamp the collection membrane and construct a sealed channel for the next fixed-depth sampling.

[0063] The sampling device employs a bottom storage compartment 40 in conjunction with a stacking mechanism 50 to achieve vertical sample stacking. Compared to the existing single-piece horizontal flat storage mode, this method does not occupy horizontal space and increases the sample storage capacity within the same sampling device volume. The overall design of the sampling device revolves around vertical film supply and vertical storage, and its horizontal dimensions can adapt to wellbore and borehole diameter limitations, making it highly practical for narrow operating scenarios. The feeding mechanism 10 can continuously supply the particle collection membrane 14 downwards, and the stacking mechanism 50 can continuously store sealed samples, eliminating the need for frequent interruptions to disassemble the sampling device to replenish the collection membrane or clean the samples, effectively improving the efficiency of exploration in deeply covered areas.

[0064] In this embodiment, the sampling housing 11 is a rectangular box structure. A suspension rope is connected to the top of the sampling housing 11, and the sampling housing 11 is lowered to a predetermined depth in the sampling hole for sampling via the suspension rope. A hanger can be installed outside the sampling hole to raise or lower the suspension rope. The suction assembly 13 adopts an existing structure and can use a vacuum pump to extract gas.

[0065] The sidewalls of the sampling housing 11 can be opened, for example, by using a snap-fit ​​structure or screws for connection.

[0066] In this embodiment, the particle collection membrane 14 can be a polytetrafluoroethylene microporous membrane or a polyester fiber membrane. Both have elasticity and strength, and neither affects particle collection. Both are non-polluting base membranes, free of rare earth elements and chemically inert. Their microporous structure can trap mineral particles when gas passes through; at the same time, they can be wound and stored on the feed shaft 102, stably transported along the longitudinal path, and are not prone to permanent deformation when stacked. They also have a smooth, non-stick surface, making them suitable for patch sealing and orderly stacking.

[0067] In some embodiments, the feeding mechanism 10 includes a feeding box 101 and a feeding shaft 102. The feeding shaft 102 is rotatably connected to the inner wall of the feeding box 101. The particle collecting membrane 14 is wound on the feeding shaft 102. The bottom of the feeding box 101 is provided with a discharge hole 103. The particle collecting membrane 14 passes through the discharge hole 103. The inner wall of the discharge hole 103 is covered with a protective film 104. The particle collecting membrane 14 is in close contact with the protective film 104.

[0068] The feeding box 101 is a rectangular box, and the feeding shaft 102 is rotatably connected in the feeding box 101. The feeding shaft 102 can rotate, and the particle collecting membrane 14 is wound into a cylindrical shape on the feeding shaft 102. One end of the particle collecting membrane 14 is pulled downward and extends downward through the discharge hole 103. The inner wall of the discharge hole 103 is covered with a protective film 104, which is made of the same material as the particle collecting membrane 14. The particle collecting membrane 14 is in close contact with the protective film 104 at the discharge hole 103, and the particle collecting membrane 14 can be pulled downward. (See the appendix of this application.) Figure 1 Based on this, the front and back sides of the particle collection membrane 14 correspond to the left and right sides of the sampling housing 11, respectively. The feed box 101 is located in the upper middle part of the sampling housing 11. The feed shaft 102 can also be connected to a movable motor, which controls the rotation of the feed shaft 102.

[0069] The feeding mechanism 10 includes a feeding moving mechanism for driving the particle collection membrane 14 downward. The feeding moving mechanism can be a robotic arm, located below the movable pipe 20, capable of gripping the particle collection membrane 14 and pulling it downward. The robotic arm can be implemented using existing technology.

[0070] In some other embodiments, the feeding and moving mechanism includes a feeding motor 60, a feeding wheel 61, and a central shaft 62. The feeding motor 60 is driven to the central shaft 62. The feeding wheel 61 is connected to both ends of the central shaft 62. The feeding motor 60, feeding wheel 61, and central shaft 62 are divided into multiple sets. Each pair of feeding motors 60, feeding wheels 61, and central shaft 62 are respectively located on opposite sides of the particle collection membrane 14. The edges of the front and back sides of the particle collection membrane 14 simultaneously abut against the feeding wheel 61. The feeding wheel 61 is also provided with a round protrusion that abuts against the outer edge of the particle collection membrane 14. The feeding wheel 61 is arranged on the downward extending path of the particle collection membrane 14.

[0071] In this embodiment, the feeding motor 60 is connected to a bracket inside the sampling housing 11. Other motors or structures not mentioned in this application can also be connected via multiple brackets within the sampling housing 11. The feeding motor 60 drives the central shaft 62 to rotate. Since the feeding wheels 61 are abutted against the opposite edges of the particle collection membrane 14, the feeding wheels 61 can drive the particle collection membrane 14 downwards. Several sets of feeding wheels 61 can be arranged along the downward movement path of the particle collection membrane 14 to drive and guide it. For example, one set can be arranged below the feeding box 101, and another set below the movable pipe 20. The rounded protrusions can create a blocking effect on the sides of the particle collection membrane 14, thus constraining its movement path. For the two feeding wheels 61 on the same side of the particle collection membrane 14, one rounded protrusion can be provided on each feeding wheel 61.

[0072] In some embodiments, the movable pipe 20 includes a first fixed port 22, a first telescopic pipe 23, and a second fixed port 24. The first fixed port 22, the first telescopic pipe 23, and the second fixed port 24 are connected in sequence. The first fixed port 22 is connected to the air inlet 12. An engagement motor is connected to the outside of the second fixed port 24. The engagement motor can drive the second fixed port 24 to move toward the particle collection membrane 14 and abut against the particle collection membrane 14, and hold the particle collection membrane 14 against one end of the base pipe 21. The first fixed port 22, the first telescopic pipe 23, the second fixed port 24, and the base pipe 21 form a sealed channel. There is a gap between the base pipe 21 and the downwardly extending particle collection membrane 14.

[0073] The movable pipe 20 is composed of a first fixed port 22, a first telescopic pipe 23, and a second fixed port 24 connected in sequence. The first fixed port 22 is connected to the air inlet 12. During sampling, the motor drives the second fixed port 24 to move toward the particle collection membrane 14, which in turn drives the first telescopic pipe 23 to extend and retract until the second fixed port 24 abuts against the front of the collection membrane and presses the collection membrane against one end of the base pipe 21. At this time, the first fixed port 22, the telescopic pipe, the second fixed port 24 and the base pipe 21 form a sealed channel, and the base pipe 21 maintains a gap with the collection membrane in the unsampled area.

[0074] A gap is reserved between the base pipe 21 and the collection membrane to prevent the particle collection membrane 14 from scraping against the base pipe 21 when it moves, and to prevent unsampled areas from prematurely contacting the base pipe 21 and causing contamination. In this embodiment, the structure of the movable pipe 20 and the base pipe 21, as well as the action of the particle collection membrane 14, can be implemented using existing structures. Any structures not mentioned can be implemented using existing structures.

[0075] In some embodiments, the stacking mechanism 50 includes:

[0076] The three-axis slide rail module 51 is located on the side of the storage compartment 40;

[0077] The support arm 52 is connected to the three-axis slide rail module 51 and is used to move the patched particle collection membrane 14 into the storage compartment 40. The three-axis slide rail module 51 can drive the support arm 52 to continuously stack the particle collection membrane 14 along a set path.

[0078] In this embodiment, the three-axis slide rail module 51 adopts an existing structure. The three-axis slide rail module 51 can move in the horizontal, vertical and longitudinal directions. The three-axis slide rail module 51 has linear guide rails in the horizontal, vertical and longitudinal directions. The guide rails are fixed to the side of the storage compartment 40 by the bracket to provide a moving track for the slider. Each axis is equipped with an independent drive unit, including a stepper motor or servo motor and a ball screw. The motor and the ball screw are connected to drive the conversion of rotational motion into linear motion. Each axis guide rail is equipped with a sliding block. The horizontal axis slider and the support 52 are fixed by a connecting seat to realize the three-dimensional spatial displacement of the support 52. Limit sensors, such as photoelectric sensors, are set at both ends of each axis to avoid damage due to overtravel. Some axes are equipped with grating rulers or encoders for position feedback.

[0079] The support 52 can be a mechanical gripper or a robotic arm, capable of holding the particle collection membrane 14.

[0080] In this application, the patching mechanism 30 includes: two patch boxes 31, respectively located on the front and back sides corresponding to the particle collection membrane 14, with an opening on the side of the patch box 31 facing the particle collection membrane 14; a pressing motor 32, located on the side of the patch box 31 away from the particle collection membrane 14, with its telescopic shaft passing through the patch box 31; a cover film 33, located in the patch box 31 on one side of the particle collection membrane 14; and a mating frame, located in the patch box 31 on the other side. The pressing motor 32 can drive the cover film 33 and the mating frame to move towards the particle collection membrane 14, thereby pressing the cover film 33, the particle collection membrane 14, and the mating frame together. After sampling, the pressing motors 32 on both sides start synchronously, driving the cover film 33 and the mating frame in their respective patch boxes 31 to move towards each other towards the particle collection membrane 14, ultimately adhering to and pressing them against both sides of the particle collection membrane 14, thus sealing the sampling area. The patch assembly 40 also includes a separation mechanism, located on the patch cassette 31, for separating the cover film 14 and the mating frame from their respective patch cassettes 31.

[0081] This application provides two storage stacking methods for the particle collection membrane 14. After the particle collection membrane 14 is sealed, both storage stacking methods involve folding the membrane in a Z-shape before stacking. (Refer to...) Figure 8 and Figure 10In the first storage and stacking method of particle collection membrane 14, all particle collection membranes 14 collect particles from the front; in the second storage and stacking method of particle collection membrane 14, particle collection membranes 14 in odd-numbered layers collect particles from the front, while particle collection membranes 14 in even-numbered layers collect particles from the back.

[0082] The first particle collection membrane 14 storage stacking method and the structure adopted are as follows:

[0083] In the first particle collection membrane 14 storage stacking method, the patch mechanism 30 includes:

[0084] Two patch boxes 31 are respectively located on the front and back sides of the particle collection membrane 14, and the patch box 31 has an opening on the side facing the particle collection membrane 14.

[0085] The crimping motor 32 is located on the side of the patch box 31 away from the particle collection membrane 14, and the telescopic shaft of the crimping motor 32 passes through the patch box 31.

[0086] Multiple covering films 33 are disposed in a patch box 31 located on one side of the front of the particle collection membrane 14. The multiple covering films 33 are connected by a connection point 36. The telescopic shaft of the pressing motor 32 is connected to the covering film 33. The covering film 33 includes a sealing sheet 331 and a connecting edge 332. The connecting edge 332 is respectively connected to the two sides of the sealing sheet 331. The connecting edge 332 is provided with multiple grooves 333 spaced apart. The connecting edge 332 corresponds to the two side edges of the particle collection membrane 14.

[0087] Multiple mating frames are located in a patch box 31 on one side of the reverse side of the particle collection membrane 14. The multiple mating frames are connected by connection points 36. The telescopic shaft of the pressing motor 32 is connected to the mating frames. The mating frames include two parallel pressing strips 34. The pressing strips 34 are provided with connecting protrusions 35 corresponding to the grooves 333. The two opposing pressing motors 32 can drive the covering film 33 and the mating frames to move toward the particle collection membrane 14, so that the covering film 33, the particle collection membrane 14 and the mating frames are pressed together, and the covering film 33 on the front and back of the particle collection membrane 14 and the mating frames are snapped together.

[0088] The separation mechanism, located on the outside of the patch box 31, is used to cut the cover film 33 and the mating frame that are connected to themselves respectively.

[0089] In one alternative embodiment, the separation mechanism includes a cutting linear module 37. The cutting linear module 37 employs an existing structure and includes a cutting track and a cutting slider. The cutting slider moves on the cutting track and is connected to a cutting blade 38. A cutting opening is provided on the side wall of the patch cassette 31 opening, extending to opposite edges of the patch cassette 31. The cutting blade 38 extends into the cutting opening and is positioned at a cutting position 39 corresponding to the opening of the patch cassette 31. The cutting blade 38 reciprocates within the cutting opening under the drive of the cutting linear module 37. The crimping motor 32 can push the covering film 33 or the mating frame toward the opening of the patch cassette 31, such as... Figure 6 and Figure 7 As shown, when the cover films 33 on both sides of the particle collection membrane 14 are engaged with the docking frame, the interconnected cover films 33 or docking frames correspond to the cutting positions 39 in their respective patch boxes 31. The cutting blade 38 moves back and forth at the cutting position 39 to cut the connection point 36 on the cover film 33 and the docking frame, so that the interconnected cover films 33 and the docking frame are clamped on the particle collection membrane 14 and disengaged from the patch box 31. The cutting blade 38, after cutting, returns to one end of the cutting opening.

[0090] The connection point 36 is made of a cutable material, such as rubber or plastic. The connecting edge 332 and the mating frame of the covering membrane 33 can be made of plastic. The groove 333 and the connecting protrusion 35 can be connected by an expansion joint. The connecting protrusion 35 presses the particle collection membrane 14 into the groove 333 for fixation, while the sealing sheet 331 is attached to the collection area of ​​the particle collection membrane 14. The pressing strip 34 can be two parallel structures or a pressing strip 34 with four sides. An additional support structure can be provided inside the patch box 31. In this embodiment, the side wall support of the patch box 31 and the connecting support of the pressing motor 32 are used.

[0091] In the first storage and stacking method of the particle collection membrane 14, two supports 52 and two triaxial slide rail modules 51 are provided on opposite sides of the storage chamber 40. After the front collection area of ​​the particle collection membrane 14 is covered by the covering film 33, the particle collection membrane 14 moves downward into the storage chamber 40. After entering the storage chamber 40, the supports 52, driven by the triaxial slide rail modules 51, move to the end of the particle collection membrane 14. The supports 52 include a robotic arm or a clamping structure. The supports 52 clamp one end of the particle collection membrane 14 and move it to the left. As the particle collection membrane 14 gradually descends, the particle collection membrane with the covering film 33... The membrane 14 is slowly laid flat at the bottom of the storage chamber 40, with a length equal to or less than the width of the storage chamber 40. The second support 52 presses down on the right end of this flattened particle collection membrane 14. Then, the first support 52 moves upwards for the length of the particle collection membrane 14 laid flat within the storage chamber 40. Next, it clamps the particle collection membrane 14 at this point and moves it to the left, causing the portion of the particle collection membrane 14 between the first and second supports 52 to overlap the first layer of particle collection membrane 14. This creates a second layer of particle collection membrane 14 stacked within the storage chamber 40. Since a movable pipe 20 is provided in this embodiment, and the collection area of ​​the particle collection membrane 14 is on the front, the first layer of particle collection membrane 14 in the storage chamber 40 is positioned with its front facing upwards, while the second layer of particle collection membrane 14 in the storage chamber 40 is positioned with its back facing upwards and its front facing downwards. This stacking process can be repeated to create more layers. Particles can be continuously collected during the stacking process.

[0092] In the first particle collection membrane 14 storage stacking method, one layer of the storage chamber 40 can be configured with multiple collection areas and multiple covering membranes 33, or it can be configured with a single collection area or a single covering membrane 33. The configuration can be adjusted according to the size of the storage chamber 40 and the collection requirements.

[0093] The second type of particle collection membrane 14 storage stacking method and the structure adopted are as follows:

[0094] Because in the second particle collection membrane 14 storage stacking method, the odd-numbered particle collection membranes 14 collect particles from the front, while the even-numbered particle collection membranes 14 collect particles from the back, a negative pressure sampling mechanism needs to be set on each side of the particle collection membrane 14; that is, there are two sets of negative pressure sampling mechanisms, specifically including two sets of air inlets 12, movable pipes 20, base pipes 21, and suction components 13. For example, one movable pipe 20 is located on the back of the particle collection membrane 14, making the back of the particle collection membrane 14 the sampling surface, and the other movable pipe 20 is located on the front of the particle collection membrane 14, making the front of the particle collection membrane 14 the sampling surface.

[0095] Reference Appendix Figure 8 and Figure 9 The support 52 includes a support rod that can be inserted into the movement path of the particle collection membrane 14. The particle collection membrane 14 can be continuously stacked under the guidance of the support rod. When the second type of particle collection membrane 14 is stored and stacked, the front and back sides of the particle collection membrane 14 are cyclically facing upwards.

[0096] In the second storage and stacking method of the particle collection membrane 14, the support 52 only adopts a support rod structure, which is simple in structure. At the same time, the length of the covering membrane 33 is set to be the same as or slightly smaller than the width of the storage compartment 40, which makes it convenient for the support rod to control the stacking of the particle collection membrane 14. In this embodiment, after the covering membrane 33 is set, the particle collection membrane 14 is not in a soft and collapsed state, but in a rigid state with a frame, and the support rod or support 52 can easily block it.

[0097] In the second particle collection membrane 14 storage stacking method, the patch mechanism 30 includes:

[0098] Two patch boxes 31 are respectively located on one side and the other side corresponding to the particle collection membrane 14, and the patch box 31 has an opening on the side facing the particle collection membrane 14;

[0099] The crimping motor 32 is located on the side of the patch box 31 away from the particle collection membrane 14, and the telescopic shaft of the crimping motor 32 passes through the patch box 31.

[0100] The first group of multiple alternating docking frames and covering films 33 are located in the patch box 31 on one side of the particle collection membrane 14. The multiple docking frames and covering films 33 are connected by connection points 36. The telescopic shaft of the pressing motor 32 is connected to the docking frame or the covering film 33. The covering film 33 includes a sealing sheet 331 and a connecting edge 332. The connecting edge 332 is connected to the two sides of the sealing sheet 331 respectively. The connecting edge 332 is provided with multiple grooves 333 that are spaced apart. The connecting edge 332 corresponds to the two side edges of the particle collection membrane 14.

[0101] The second group of multiple alternating docking frames and covering films 33 are located in the patch box 31 on one side of the particle collection membrane 14. The multiple docking frames and covering films 33 are connected by connection points 36. The telescopic shaft of the pressing motor 32 is connected to the docking frame or the covering film 33. The docking frame includes two parallel pressing strips 34. The pressing strips 34 are provided with connecting protrusions 35 corresponding to the grooves 333. The two opposing pressing motors 32 can drive the first group of multiple alternating docking frames and covering films 33 and the second group of multiple alternating docking frames and covering films 33 to move toward the particle collection membrane 14, so that the covering film 33, the particle collection membrane 14 and the docking frame in the first group of multiple alternating docking frames and covering films 33 are pressed together, and the particle collection membrane 14, the covering film 33 and the docking frame are snapped together.

[0102] The separation mechanism, located outside the patch box 31, is used to cut the cover film 33 or the docking frame 33 connected to the particle collection membrane 14 from the second set of multiple alternating docking frames and cover films 33 and the first set of multiple alternating docking frames and cover films 33. The specific structural details of the separation mechanism are the same as those of the separation mechanism in the first particle collection membrane 14 storage stacking method.

[0103] In the second method of storing and stacking the particle collection membrane 14, a three-axis slide rail module 51 is provided. After the particle collection membrane 14 and the covering membrane 33 extend into the storage chamber 40, the support rod moves from its initial position to the right side of the particle collection membrane 14 and drives the particle collection membrane 14 to move to the left. Due to the covering membrane 33, it is equivalent to a rigid plate structure slowly flattening towards the bottom of the storage chamber 40. Therefore, the support rod only needs to be placed on the back of the particle collection membrane 14 to support it, rather than clamping it. After the first layer of particle collection membrane 14 in the storage chamber 40 is stacked, the support rod returns to its original position. As the particle collection membrane 14 continues to descend, the next covering membrane 33 and the particle collection membrane 14 enter the storage chamber 40. The support rod moves to the right side of this covering membrane 33. As the particle collection membrane 14 is released, the support rod moves to the left until this part of the particle collection membrane 14 is flattened, forming the second layer of the storage chamber 40. By continuing in this manner, more layers can be stacked. In this embodiment, the connection between the first and second particulate collection membranes 14 is spaced apart, forming a blank area without any structure or sampling, facilitating the overlapping of the first and second particulate collection membranes 14. The first particulate collection membrane 14 faces upwards, and the second particulate collection membrane 14 faces upwards. Therefore, this application includes another set of air inlets 12, movable pipes 20, base pipes 21, and suction components 13. Another movable pipe 20 is located on the reverse side of the particulate collection membrane 14, making the reverse side of the particulate collection membrane 14 the sampling surface. Simultaneously, the mating frames and covering membranes 33 are arranged crosswise in the same group. According to the sampling surface instruction, corresponding to the sealing requirements of frontal sampling, the first group of multiple alternately connected mating frames and the first covering membrane 33 are driven to move towards the particulate collection membrane 14. Simultaneously, the second group of multiple alternately connected mating frames and the first mating frame of the covering membrane 33 are driven to move synchronously, corresponding to the snap-fit ​​requirements of the non-sampling surface. Both are pressed against each other from the front and back of the particle collection membrane 14, with the covering membrane 33 tightly attached to the front sampling area. The connecting protrusion 35 of the mating frame engages with the groove 333 of the covering membrane 33, clamping and fixing the particle collection membrane 14 to form a sealed cavity. The separation mechanism is activated, cutting off the connection of the covering membrane 33 and the connection of the mating frame along the connection point 36, completing the sealing of the front sampling area.

[0104] For example, during odd-numbered sampling, the front of the particle collection membrane 14 is the sampling surface; during even-numbered sampling, the back of the particle collection membrane 14 is the sampling surface. The feeding and moving mechanism drives the particle collection membrane 14 downward, and the sampling device switches to the reverse sampling mode. At this time, the first set of multiple alternating connecting docking frames and the next component docking frame of the cover membrane 33 are pushed out by the pressing motor 32. The second set of multiple alternating connecting docking frames and the next component cover membrane 33 of the cover membrane 33 are pushed out simultaneously. The docking frames are adapted to the non-sampling surface during reverse sampling and snapped together. The cover membrane 33 is tightly attached to the reverse sampling area and snapped together again by the expansion joint. The separation mechanism cuts off the connection point 36 to complete the sealing of the reverse sampling area.

[0105] With the above setup, the first and second collection surfaces of the storage chamber 40 are stacked on top of each other, and the collection surfaces of all sampling areas are uniformly facing upwards. When stacked, only the non-collection surface of the upper particle collection membrane 14 contacts the outer side of the lower covering membrane 33, and there is no direct contact between the collection surfaces, which completely eliminates cross-contamination of mineral particles in different sample layers and maximizes the protection of the original purity of the sample.

[0106] The rigid frame structure formed by the covering membrane 33 and the docking frame, with a uniform upward orientation, ensures that each layer of particle collection membrane 14 is subjected to uniform force, eliminating issues such as unevenness and gaps caused by inconsistent protrusion orientations. This results in a more compact and flat stack, reducing interlayer compression deformation, and allowing the storage chamber 40 of the same vertical height to hold more samples. With all sample collection surfaces facing upwards, the sampling areas of each layer can be directly identified visually after opening the storage chamber 40, eliminating the need to search or distinguish between the front and back sides, significantly improving retrieval efficiency. During testing, there is no need to adjust the sample orientation; the sample can be exposed simply by peeling off the covering membrane 33, making it suitable for batch sample processing scenarios.

[0107] This application also provides a method for sampling rare earth mineral particles in geological exploration of rare earth deposits in deeply overgrown areas. The method uses the aforementioned sampling device for rare earth mineral particles in geological exploration of rare earth deposits in deeply overgrown areas to sample rare earth mineral particles in the deeply overgrown areas. The sampling method includes the following steps:

[0108] Before the sampling device is lowered into the sampling hole, the wound and stored particle collection membrane 14 is continuously supplied from top to bottom along the set path to ensure that the particle collection membrane 14 remains in a vertically extended state.

[0109] The sampling device is lowered into the sampling hole to the predetermined sampling depth of the rare earth ore in the deep coverage area. The attitude of the sampling device is adjusted so that the air inlet 12 on the side wall of the sampling shell 11 faces the direction of ground gas collection.

[0110] Open the air inlet valve at the air inlet 12 and drive the movable pipe 20 to move toward the base pipe 21, so that the movable pipe 20 and the base pipe 21 clamp the particle collection membrane 14 from the front and back sides respectively, and fix the particle collection membrane 14 against one end of the base pipe 21 to form a closed gas channel.

[0111] When the air intake component 13 is activated, negative pressure is generated in the sealed gas channel through the base pipe 21. Aerosol particles in the ground air enter the movable pipe 20 through the air inlet 12. When the particles pass through the particle collection membrane 14, the rare earth mineral particles are intercepted and captured, thus completing the fixed-depth sampling at this depth.

[0112] After a single sampling is completed, the movable pipe 20 is driven to reverse and reset, releasing the resistance to the particle collection membrane 14, and the patching mechanism 30 located below the movable pipe 20 is activated to seal the sample area on the particle collection membrane 14.

[0113] The sealed particle collection membrane 14 continues to be conveyed downward under the drive of the feeding mechanism 10 until it enters the storage chamber 40 at the bottom of the sampling shell 11; the stacking mechanism 50 in the storage chamber 40 is activated to continuously and orderly stack the sealed particle collection membrane 14 in the storage chamber 40 according to the preset rules, so as to realize the centralized collection of samples.

[0114] Repeat the above steps, the feeding mechanism 10 continuously supplies new unsampled particle collection membrane 14 downwards, the movable pipe 20 cooperates with the base pipe 21 again to clamp the new particle collection membrane 14 and build a closed channel, and sequentially completes continuous fixed-depth sampling at the same depth for multiple batches or at different depths.

[0115] The above specific embodiments further illustrate the purpose, technical solution and beneficial effects of this application. It should be understood that the above are only specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A sampling device for rare earth mineral particles used in geological exploration of rare earth deposits in deeply covered areas, characterized in that, include: The feeding mechanism is located inside the upper part of the sampling shell and is used to continuously supply the particle collection membrane downwards; A negative pressure sampling mechanism includes a movable pipe, a base pipe, and an air intake component disposed within a sampling housing. The air intake component is connected to the base pipe. The movable pipe and the base pipe are located on opposite sides of the particle collection membrane. The movable pipe is connected to an air inlet on the sampling housing. The movable pipe is movable toward the base pipe to bring the particle collection membrane against one end of the base pipe. A patching mechanism, located below the movable pipe, is used to patch and seal the sample area of ​​the particle collection membrane. A storage compartment is located inside the sampling housing and below the patching mechanism; the storage compartment is equipped with a stacking mechanism for continuously stacking multiple patch-sealed particle collection membranes in the storage compartment.

2. The rare earth mineral particle sampling device for geological exploration of rare earth deposits in deep-covered areas according to claim 1, characterized in that, The feeding mechanism includes a feeding box and a feeding shaft. The feeding shaft is rotatably connected to the inner wall of the feeding box. The particle collecting membrane is wound on the feeding shaft. The bottom of the feeding box is provided with a discharge hole. The particle collecting membrane passes through the discharge hole. The inner wall of the discharge hole is covered with a protective film. The particle collecting membrane is in close contact with the protective film.

3. The rare earth mineral particle sampling device for geological exploration of rare earth deposits in deep-covered areas according to claim 1, characterized in that, The feeding mechanism includes a feeding moving mechanism for driving the particle collecting membrane to move downwards.

4. The rare earth mineral particle sampling device for geological exploration of rare earth deposits in deep-covered areas according to claim 3, characterized in that, The feeding and moving mechanism includes a feeding motor, a feeding wheel, and a central shaft. The feeding motor is driven and connected to the central shaft. The feeding wheel is connected to both ends of the central shaft. The feeding motor, the feeding wheel, and the central shaft are divided into multiple sets. Each pair of feeding motors, feeding wheels, and central shafts is respectively located on opposite sides of the particle collection membrane. The edges of the front and back sides of the particle collection membrane simultaneously abut against the feeding wheel. The feeding wheel is also provided with a rounded protrusion that abuts against the outer edge of the particle collection membrane. The feeding wheel is arranged on the downward extending path of the particle collection membrane.

5. The rare earth mineral particle sampling device for geological exploration of rare earth deposits in deep-covered areas according to claim 4, characterized in that, The movable pipe includes a first fixed port, a first telescopic pipe, and a second fixed port. The first fixed port, the first telescopic pipe, and the second fixed port are connected in sequence. The first fixed port is connected to the air inlet. An engagement motor is connected to the outside of the second fixed port. The engagement motor can drive the second fixed port to move towards the particle collection membrane, pressing the particle collection membrane against one end of the base pipe. The first fixed port, the first telescopic pipe, the second fixed port, and the base pipe form a sealed channel. There is a gap between the base pipe and the downwardly extending particle collection membrane.

6. The rare earth mineral particle sampling device for geological exploration of rare earth deposits in deeply covered areas according to claim 1, characterized in that, The stacking mechanism includes: A three-axis slide rail module is located on the side of the storage compartment; The support arm, connected to the three-axis slide rail module, is used to move the patched particle collection membrane into the storage compartment, and the three-axis slide rail module can drive the support arm to continuously stack the particle collection membrane along a set path.

7. The rare earth mineral particle sampling device for geological exploration of rare earth deposits in deeply covered areas according to claim 6, characterized in that, All particle collection membranes collect particulate matter from the front. Alternatively, the particle collection membrane in odd-numbered layers collects particles from the front, while the particle collection membrane in even-numbered layers collects particles from the back.

8. The rare earth mineral particle sampling device for geological exploration of rare earth deposits in deep-covered areas according to claim 7, characterized in that, The patch assembly includes: Two patch boxes are respectively disposed on one side of the front and one side of the particle collection membrane, and the patch box has an opening on the side facing the particle collection membrane; A pressing motor is located on the side of the patch box away from the particle collection membrane, and the telescopic shaft of the pressing motor passes through the patch box. A covering membrane is disposed in the patch box located on one side of the particle collection membrane; The mating frame is located in the patch box on the other side; The pressing motor can drive the cover film and the docking frame to move toward the particle collecting membrane, so that the cover film, the particle collecting membrane and the docking frame are pressed together.

9. The rare earth mineral particle sampling device for geological exploration of rare earth deposits in deep-covered areas according to claim 8, characterized in that, The patching mechanism further includes a separation mechanism disposed on the patch box, used to separate the cover film and the mating frame from their respective patch boxes.

10. A method for sampling rare earth mineral particles in geological exploration of rare earth deposits in deeply overburdened areas, characterized in that, The rare earth mineral particle sampling device for geological exploration of rare earth minerals in deep overburdened areas as described in any one of claims 1-9 is used to sample rare earth mineral particles in deep overburdened areas.

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