A perforated powder reverse filling device for X-ray diffractometer

Abstract

The present invention discloses a perforated powder reverse filling device for an X-ray diffractometer, which relates to the technical field of experimental equipment and includes a sample stage. A sample box is arranged on the sample stage. The sample stage includes a circular positioning plate, a sample rack, a flattening mechanism for flattening the sample powder in the sample box, a pressing mechanism for closing the opening of the sample box, and a driving mechanism for driving the sample box into the pressing mechanism. After the sample is flattened in the present invention, it can be flipped. The distribution of the flipped sample particles is more random, reducing the influence of sample preferred orientation. Through the cooperation of the pressing mechanism and the piston cylinder, the uniformity and consistency of the sample are ensured, making the particle distribution of the sample more random, reducing the influence of sample preferred orientation, so as to obtain a more accurate diffraction pattern without scraping flat multiple times, thereby avoiding the lattice damage caused by the sample powder after long-term grinding due to the need to flatten the powder unevenly multiple times.

Description

Technical Field

[0001] The present invention relates to the technical field of experimental equipment, and particularly relates to a perforated powder reverse filling device for an X-ray diffractometer. Background Art

[0002] X-rays are electromagnetic waves with very short wavelengths, approximately 0.06 - 20 nm. They can penetrate a certain thickness of substances and cause phenomena such as fluorescence of fluorescent substances, sensitization of camera emulsions, ionization of gases, and diffraction of crystalline substances. An X-ray diffractometer can generate X-rays by bombarding a metal target with a high-energy electron beam. The X-rays will penetrate the test sample, and through an auxiliary system, a diffraction spectrum of the test sample can be obtained. Staff can understand the situation of the test sample through the diffraction spectrum, and it is generally used by scientific researchers when analyzing mineral components.

[0003] The main materials for conventional X-ray diffraction analysis tests are in a powder state, and the shapes of many powder particles deviate significantly from the ideal state (needle-shaped, flake-shaped, etc.). They tend to exhibit preferred orientation characteristics during conventional powder sample preparation, resulting in deviations in the distribution of their diffraction intensities and affecting the accuracy of diffraction result analysis.

[0004] In the prior art, the powder sample specimen preparation device for an X-ray diffractometer sequentially includes a flat bottom plate, a sample sheet, and a pressing plate from bottom to top. The sample sheet is provided with a sample groove for containing the powder sample. When it is necessary to press the powder sample, staff need to add the powder sample to be analyzed into the sample groove, cover the pressing plate on the upper surface of the sample sheet, and use finger pressure or palm pressure methods to form the powder specimen in the sample groove. When flattening the sample, the powder distribution may be uneven, and particle aggregation or voids are likely to occur, affecting the diffraction peak intensity and data accuracy. Moreover, pressing the powder sample may cause the surface to be rough, increasing background noise and reducing the signal-to-noise ratio.

[0005] In view of the above problems, a perforated powder reverse filling device for an X-ray diffractometer is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a perforated powder reverse filling device for an X-ray diffractometer to solve the above problems.

[0007] To solve the above technical problems, the present invention specifically provides the following technical solutions:

[0008] A perforated powder reverse filling device for an X-ray diffractometer, comprising a sample stage, on which a sample box is arranged. The sample stage includes a circular positioning plate, a sample rack, a flattening mechanism for flattening the sample powder in the sample box, a pressing mechanism for closing the opening of the sample box, and a driving mechanism for driving the sample box into the pressing mechanism. The circular positioning plate is vertically installed inside the X-ray diffractometer, the sample rack is horizontally arranged on one side of the circular positioning plate, the flattening mechanism is arranged on one side of the outer wall of the circular positioning plate close to the sample rack and is located directly above the sample rack, the pressing mechanism is installed on one side of the top of the sample rack, an installation groove is formed on the sample rack, the driving mechanism is installed in the installation groove, and the sample box is in transmission connection with the driving mechanism. A side plate is fixedly connected to the top of the sample rack close to one side of the circular positioning plate, and a rotating motor is installed on the side of the outer wall of the circular positioning plate away from the sample rack. The output shaft of the rotating motor penetrates through the circular positioning plate and is fixedly connected to the side plate;

[0009] When the sample box enters the pressing mechanism, the rotating motor drives the sample rack to turn over.

[0010] As a preferred solution of the present invention, the sample box includes an arc-shaped sleeve, a hollow column, a cover and two elastic members. The arc-shaped sleeve is slidably arranged in the installation groove, the hollow column is slidably arranged inside the arc-shaped sleeve, the cover is detachably connected to the bottom of the hollow column, and the cover is located at the bottom of the arc-shaped sleeve. Grooves are formed on both sides inside the arc-shaped sleeve, and the two elastic members are respectively arranged in the two grooves.

[0011] As a preferred solution of the present invention, the elastic member includes a clamping plate and a first spring. One end of the clamping plate is fixedly connected to the outer wall of the hollow column, and the clamping plate is slidably connected to the groove. The first spring is arranged inside the groove, one end of the first spring is connected to the bottom surface of the groove, and the other end of the first spring abuts against the bottom surface of the clamping plate.

[0012] As a preferred solution of the present invention, the flattening mechanism includes a cross bar, an installation frame, a rotating rod, a push rod, a pressing plate and a second spring. The cross bar is fixed on one side of the outer wall of the circular positioning plate, the installation frame is fixedly installed at the bottom of the cross bar, the rotating rod is rotatably arranged at the bottom of the installation frame, a chute is formed inside the rotating rod, the push rod is slidably arranged inside the chute, the pressing plate is located below the push rod and is fixedly connected to one end of the push rod. The second spring is arranged inside the chute, and both ends of the second spring respectively abut against the push rod and the inner top wall of the rotating rod. A driving motor is installed on one side of the outer wall of the installation frame, and the output shaft of the driving motor is fixedly connected to a rotating shaft. The rotating shaft sequentially penetrates through the installation frame and the rotating rod and is fixedly connected to the rotating rod.

[0013] As a preferred solution of the present invention, the pressing mechanism includes a U-shaped cover plate, a piston cylinder and a pneumatic component, wherein the U-shaped cover plate is fixedly arranged on one side of the top of the sample rack close to the side plate, a through groove is provided at the bottom of the sample rack and directly below the U-shaped cover plate, the piston cylinder is fixedly connected to the top wall inside the U-shaped cover plate, the pneumatic component is installed on one side of the inside of the U-shaped cover plate close to the side plate, and an air guide pipe is connected between the pneumatic component and the piston cylinder;

[0014] When the driving mechanism drives the sample box to enter the interior of the U-shaped cover plate and abut against the gas pressure piece, the gas in the piston cylinder increases and pushes the hollow column downward.

[0015] As a preferred solution of the present invention, the pneumatic component includes an air cylinder, a piston plate, a third spring and a pressing plate. The air cylinder is fixedly connected to one side of the side plate and is located in the mounting groove. The piston plate is axially sealed and slidably connected to the inside of the air cylinder. The pressing plate is fixedly connected to the side of the outer wall of the piston plate away from the air cylinder. The third spring is arranged inside the air cylinder and extends into the piston plate, and the two ends of the third spring are respectively in conflict with the air cylinder and the piston plate, and the air guide pipe is connected to the air cylinder.

[0016] As a preferred solution of the present invention, both sides of the outer wall of the arc-shaped sleeve are detachably connected with connecting blocks, and the two connecting blocks are both drivingly connected to the driving mechanism.

[0017] As a preferred solution of the present invention, the bottom of the pressure plate is arc-shaped, and the width of the pressure plate is greater than the inner diameter of the hollow column.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention rotates and flattens the sample on the sample box through a flattening mechanism, wherein the arc-shaped bottom design of the pressing plate enables it to completely fit with the surface of the sample box and press the powder along the arc-shaped path to ensure that the powder is evenly stressed, so that the sample powder is flattened more evenly and flatly, ensuring that the sample powder fills the interior of the sample box, providing high-quality samples for subsequent X-ray diffraction analysis, and the sample box generates a reaction force on the pressing plate, causing the push rod to slide in the slide groove and compress the second spring to form a buffering effect. This buffering effect can avoid the directional arrangement of particles of the powder due to excessive flattening, ensure the natural state of the sample powder, and reduce interference with the measurement results. The elastic design of the second spring makes the flattening process smoother, avoids impact on the sample box and powder, and improves the stability and safety of the operation.

[0020] 2. After the sample is flattened, the present invention can flip it. The particle distribution of the flipped sample is more random, reducing the influence of the preferred orientation of the sample. Through the cooperation of the pressing mechanism and the piston cylinder, the uniformity and consistency of the sample are ensured, making the particle distribution of the sample more random, reducing the influence of the preferred orientation of the sample, thereby obtaining a more accurate diffraction pattern. Moreover, the present invention only needs to flatten the powder on the sample box to ensure that the surface of the sample powder is smoother, more uniform and denser, without the need for multiple scraping, thus avoiding the lattice damage of the sample powder after long-term grinding caused by the need for multiple flattening due to the uneven powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0022] Figure 1 FIG. is a schematic diagram of the overall structure of a perforated powder reverse filling device for an X-ray diffractometer provided by the present invention;

[0023] Figure 2 FIG. is a bottom view of a perforated powder reverse filling device for an X-ray diffractometer provided by the present invention;

[0024] Figure 3 FIG. is a front view structural sectional view of a perforated powder reverse filling device for an X-ray diffractometer provided by the present invention;

[0025] Figure 4 Provided by the present invention Figure 3 Enlarged view of the structure at A;

[0026] Figure 5 Provided by the present invention Figure 3 Enlarged view of the structure at B;

[0027] Figure 6 FIG. is a schematic diagram of the structure of the flattening mechanism provided by the present invention;

[0028] Figure 7 FIG. is a top view of the sample rack provided by the present invention;

[0029] Figure 8 FIG. is a schematic diagram of the structure of the sample box provided by the present invention.

[0030] The reference numerals in the figures are respectively represented as follows:

[0031] 1. Sample stage; 2. Sample box; 3. Circular positioning plate; 4. Sample rack; 5. Flattening mechanism; 6. Pressing mechanism; 7. Driving mechanism; 8. Installation groove; 9. Side plate; 10. Rotating motor;

[0032] 21. Arc-shaped sleeve; 22. Hollow column; 23. Sealing cap; 24. Connecting block; 25. Groove; 26. Clamping plate; 27. First spring; 51. Cross bar; 52. Mounting bracket; 53. Rotating rod; 54. Push rod; 55. Pressing plate; 56. Second spring; 57. Chute; 61. U-shaped cover plate; 62. Piston cylinder; 63. Pneumatic component; 64. Through groove; 65. Air duct; 66. Air storage cylinder; 67. Piston plate; 68. Third spring; 69. Pressing plate. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figure 1 - Figure 8 shown, the present invention provides a perforated powder reverse filling device for an X-ray diffractometer, including a sample stage 1, a sample box 2 is arranged on the sample stage 1. The sample stage 1 includes a circular positioning plate 3, a sample rack 4, a flattening mechanism 5 for flattening the sample powder in the sample box 2, a pressing mechanism 6 for closing the opening of the sample box 2, and a driving mechanism 7 for driving the sample box 2 into the pressing mechanism 6. The circular positioning plate 3 is vertically installed inside the X-ray diffractometer, the sample rack 4 is horizontally arranged on one side of the circular positioning plate 3, the flattening mechanism 5 is arranged on the outer wall of the circular positioning plate 3 near the sample rack 4 and is located directly above the sample rack 4, the pressing mechanism 6 is installed on one side of the top of the sample rack 4, an installation groove 8 is provided on the sample rack 4, the driving mechanism 7 is installed in the installation groove 8, and the sample box 2 is in transmission connection with the driving mechanism 7. A side plate 9 is fixedly connected to the top of the sample rack 4 near one side of the circular positioning plate 3, and a rotating motor 10 is installed on the outer wall of the circular positioning plate 3 away from the sample rack 4. The output shaft of the rotating motor 10 penetrates through the circular positioning plate 3 and is fixedly connected to the side plate 9;

[0035] After the sample box 2 enters the pressing mechanism 6, the rotating motor 10 drives the sample rack 4 to turn over.

[0036] When the present invention is in use, the sample box 2 is first installed in the installation groove 8, and the sample powder is added into the sample box 2. The sample box 2 includes an arc sleeve 21, a hollow column 22, a cover 23 and two elastic members. The arc sleeve 21 is slidably set in the installation groove 8, the hollow column 22 is slidably set inside the arc sleeve 21, the cover 23 is detachably connected to the bottom of the hollow column 22, and the cover 23 is located at the bottom of the arc sleeve 21. Grooves 25 are opened on both sides of the arc sleeve 21, and the two elastic members are respectively set in the two grooves 25.

[0037] The elastic member includes a card plate 26 and a first spring 27. One end of the card plate 26 is fixedly connected to the outer wall of the hollow column 22, and the card plate 26 is slidably connected to the groove 25. The first spring 27 is arranged inside the groove 25, and one end of the first spring 27 is connected to the bottom surface of the groove 25, and the other end of the first spring 27 is in contact with the bottom surface of the card plate 26.

[0038] Connecting blocks 24 are detachably connected to both sides of the outer wall of the arc-shaped sleeve 21 , and both connecting blocks 24 are drivingly connected to the driving mechanism 7 .

[0039] The sample powder is evenly sprinkled into the middle of the hollow column 22, and then the powder of the sample box 2 is flattened by the flattening mechanism 5. The flattening mechanism 5 includes a cross bar 51, a mounting frame 52, a rotating rod 53, a push rod 54, a pressure plate 55 and a second spring 56. The cross bar 51 is fixed to one side of the outer wall of the circular positioning plate 3, the mounting frame 52 is fixedly mounted at the bottom of the cross bar 51, the rotating rod 53 is rotatably set at the bottom of the mounting frame 52, a slide groove 57 is opened inside the rotating rod 53, the push rod 54 is slidably set inside the slide groove 57, the pressure plate 55 is located below the push rod 54 and is fixedly connected to one end of the push rod 54, the second spring 56 is set inside the slide groove 57, and the two ends of the second spring 56 are respectively in conflict with the push rod 54 and the inner top wall of the rotating rod 53, a driving motor is installed on one side of the outer wall of the mounting frame 52, and the output shaft of the driving motor is fixedly connected with a rotating shaft, and the rotating shaft passes through the mounting frame 52 and the rotating rod 53 in sequence and is fixedly connected to the rotating rod 53.

[0040] The bottom of the pressing plate 55 is arc-shaped, and the width of the pressing plate 55 is greater than the inner diameter of the hollow column 22 .

[0041] Specifically, a driving motor (the driving motor is a prior art, and its specific installation method can be installed according to the actual situation, so it is not shown in the figure) drives the rotating shaft to rotate. The rotating shaft drives the rotating rod 53 to rotate and drives the push rod 54 and the pressing plate 55 at its bottom to rotate towards the sample box 2. When the pressing plate 55 rotates to the top of the sample box 2 and flattens the powder on the sample box 2, the sample powder fills the inside of the sample box 2, realizing the automatic flattening of the sample powder, reducing manual intervention, and improving the operation efficiency. Among them, the bottom of the pressing plate 55 is arc-shaped. When the bottom of the pressing plate 55 contacts the top of the sample box 2, the arc-shaped bottom of the pressing plate 55 is in full contact with the surface of the sample box 2. The arc-shaped bottom design of the pressing plate 55 enables it to fit perfectly with the surface of the sample box 2 and press the powder along this arc path, ensuring uniform force on the powder and making the sample powder flatter and more uniform, ensuring that the sample powder fills the inside of the sample box 2, providing a high-quality sample for subsequent X-ray diffraction analysis. Among them, when the pressing plate 55 presses against the top of the sample box 2, the rotating rod 53 continues to drive the pressing plate 55 to rotate. When the pressing plate 55 presses against the top of the sample box 2, the sample box 2 generates a reaction force on the pressing plate 55, causing the push rod 54 to slide in the chute 57 and compress the second spring 56, forming a buffering effect. This buffering effect can prevent the powder from being oriented due to excessive flattening, ensuring the natural state of the sample powder, reducing interference with the measurement results. Moreover, the elastic design of the second spring 56 makes the flattening process smoother, avoiding impact on the sample box 2 and the powder, and improving the stability and safety of the operation.

[0042] Through the coordinated work of the driving motor, the rotating rod 53, the push rod 54, the pressing plate 55, and the second spring 56, the automatic flattening of the sample powder is realized. The arc-shaped design of the pressing plate 55 can also ensure the uniform flattening of the powder, reduce the voids between particles, enabling the sample to provide a more consistent diffraction signal under X-ray irradiation, avoiding the reduction of the signal-to-noise ratio caused by the uneven surface of the powder in the sample box 2. And the buffering effect of the second spring 56 prevents excessive flattening, ensuring the natural state of the sample, significantly improving the efficiency and accuracy of sample processing of the X-ray diffractometer.

[0043] The pressing mechanism 6 includes a U-shaped cover plate 61, a piston cylinder 62, and a pneumatic component 63. The U-shaped cover plate 61 is fixedly arranged on one side of the top of the sample rack 4 close to the side plate 9. A through groove 64 is opened at the bottom of the sample rack 4 and directly below the U-shaped cover plate 61. The piston cylinder 62 is fixedly connected to the inner top wall of the U-shaped cover plate 61. The pneumatic component 63 is installed inside the U-shaped cover plate 61 on the side close to the side plate 9. A gas guide pipe 65 is connected between the pneumatic component 63 and the piston cylinder 62;

[0044] When the driving mechanism 7 drives the sample box 2 into the inside of the U-shaped cover plate 61 and contacts the pneumatic component 63, the gas in the piston cylinder 62 increases and pushes the hollow column 22 downward.

[0045] The air pressure component 63 includes an air storage cylinder 66, a piston plate 67, a third spring 68, and a pressing plate 69. The air storage cylinder 66 is fixedly connected to one side of the side plate 9 and is located in the installation groove 8. The piston plate 67 is axially sealed and slidably connected to the inside of the air storage cylinder 66. The pressing plate 69 is fixedly connected to the outer wall of the piston plate 67 on the side away from the air storage cylinder 66. The third spring 68 is arranged inside the air storage cylinder 66, and both ends of the third spring 68 are in contact with the air storage cylinder 66 and the piston plate 67 respectively. The air guide pipe 65 is communicated with the air storage cylinder 66.

[0046] Among them, the piston cylinder 62 is provided with a sliding rod axially slidably sealed inside the cylinder body, and a compression spring is configured as required, which is the prior art.

[0047] After the powder in the sample box 2 is flattened, the driving mechanism 7 drives the sample box 2 to move along the inside of the installation groove 8 to below the U-shaped cover plate 61 until the outer wall of the sample box 2 moves to contact the pressing plate 69. At this time, the sample box 2 continues to move and pushes the pressing plate 69, causing the piston plate 67 to move along the inside of the air storage cylinder 66 and compress the third spring 68. After the gas inside the air storage cylinder 66 is compressed, it is transported to the inside of the piston cylinder 62 through the air guide pipe 65. As the gas inside the piston cylinder 62 increases, the air pressure pushes the sliding rod to extend and contact the top of the hollow column 22, and pushes the hollow column 22 to move down from the inside of the arc-shaped sleeve 21 until the cover 23 at the bottom of the hollow column 22 extends out from the through groove 64. Subsequently, the side plate 9 is rotated by the rotating motor 10, thereby flipping the sample box 2. After the sample box 2 is flipped, the cover 23 is located at the top. The cover 23 at the bottom of the hollow column 22 is detachably connected to the hollow column 22. After the sample is flipped, the cover 23 is taken out to facilitate the x-ray diffractometer to detect the sample powder.

[0048] The present invention can flip the sample after it is flattened. The particle distribution of the flipped sample is more random, reducing the influence of sample preferred orientation. Moreover, through the cooperation of the pressing mechanism 6 and the piston cylinder 62, the uniformity and consistency of the sample can be ensured, making the particle distribution of the sample more random, reducing the influence of sample preferred orientation, thereby obtaining a more accurate diffraction pattern. And in the present invention, only the powder on the sample box 2 needs to be compacted to ensure that the surface of the sample powder at the bottom of the sample box is flat, uniform and dense, without the need for multiple scraping. Compared with the prior art, it can avoid the problem of lattice damage caused by the sample powder after long-term grinding due to the uneven powder that needs to be flattened multiple times.

[0049] Among them, when the bottom of the sliding rod presses against the surface of the hollow column 22, the sample powder is secondarily pressed to ensure that the surface of the sample is flatter.

[0050] It should be noted that in order for the sliding rod to push the hollow column 22 out of the inside of the arc-shaped sleeve 21, the diameter of the sliding rod in the piston cylinder 62 is equal to or slightly smaller than the diameter of the hollow column 22.

[0051] The scope of protection claimed is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions within the essence and scope of protection of this application, and such modifications or equivalent substitutions should also be regarded as falling within the scope of protection of this application.

Claims

1. A perforated powder reverse filling device for an X-ray diffractometer, comprising a sample stage (1), characterized in that: A sample box (2) is arranged on the sample stage (1), and the sample stage (1) comprises a circular positioning plate (3), a sample holder (4), a flattening mechanism (5) for flattening sample powder in the sample box (2), a pressing mechanism (6) for closing an opening of the sample box (2), and a driving mechanism (7) for driving the sample box (2) to enter the pressing mechanism (6), wherein the circular positioning plate (3) is vertically mounted inside the X-ray diffractometer, the sample holder (4) is horizontally arranged on one side of the circular positioning plate (3), and the flattening mechanism (5) is arranged on a side of an outer wall of the circular positioning plate (3) close to the sample holder (4). , and is located directly above the sample rack (4), the pressing mechanism (6) is installed on one side of the top of the sample rack (4), the sample rack (4) is provided with a mounting groove (8), the driving mechanism (7) is installed in the mounting groove (8), and the sample box (2) is drivingly connected to the driving mechanism (7), the top of the sample rack (4) close to the circular positioning plate (3) is fixedly connected to a side plate (9), the outer wall of the circular positioning plate (3) is installed on the side away from the sample rack (4), and the output shaft of the rotating motor (10) passes through the circular positioning plate (3) and is fixedly connected to the side plate (9); When the sample box (2) enters the pressing mechanism (6), the rotating motor (10) drives the sample rack (4) to flip; The sample box (2) comprises an arc-shaped sleeve (21), a hollow column (22), a cover (23) and two elastic members, wherein the arc-shaped sleeve (21) is slidably arranged in the mounting groove (8), the hollow column (22) is slidably arranged inside the arc-shaped sleeve (21), the cover (23) is detachably connected to the bottom of the hollow column (22), and the cover (23) is located at the bottom of the arc-shaped sleeve (21), grooves (25) are provided on both sides of the interior of the arc-shaped sleeve (21), and the two elastic members are respectively arranged in the two grooves (25); The pressing mechanism (6) comprises a U-shaped cover plate (61), a piston cylinder (62) and a gas pressure piece (63); the U-shaped cover plate (61) is fixedly arranged on a side of the top of the sample rack (4) close to the side plate (9); a through groove (64) is provided at the bottom of the sample rack (4) and directly below the U-shaped cover plate (61); the piston cylinder (62) is fixedly connected to the top wall of the U-shaped cover plate (61); the gas pressure piece (63) is installed on a side of the inside of the U-shaped cover plate (61) close to the side plate (9); and an air guide pipe (65) is connected between the gas pressure piece (63) and the piston cylinder (62); When the driving mechanism (7) drives the sample box (2) to enter the interior of the U-shaped cover plate (61) and abut against the gas pressure member (63), the gas in the piston cylinder (62) increases and pushes the hollow column (22) downward.

2. The perforated powder reverse filling device for an X-ray diffractometer according to claim 1, characterized in that: The elastic member comprises a clamping plate (26) and a first spring (27); one end of the clamping plate (26) is fixedly connected to the outer wall of the hollow column (22), and the clamping plate (26) is slidably connected to the groove (25); the first spring (27) is arranged inside the groove (25), and one end of the first spring (27) is connected to the bottom surface of the groove (25), and the other end of the first spring (27) is in contact with the bottom surface of the clamping plate (26).

3. The perforated powder reverse filling device for an X-ray diffractometer according to claim 1, characterized in that: The flattening mechanism (5) comprises a cross bar (51), a mounting frame (52), a rotating rod (53), a push rod (54), a pressure plate (55) and a second spring (56); the cross bar (51) is fixed to one side of the outer wall of the circular positioning plate (3); the mounting frame (52) is fixedly mounted on the bottom of the cross bar (51); the rotating rod (53) is rotatably arranged at the bottom of the mounting frame (52); a sliding groove (57) is provided inside the rotating rod (53); and the push rod (54) is slidably arranged inside the sliding groove (57). The pressure plate (55) is located below the push rod (54) and is fixedly connected to one end of the push rod (54). The second spring (56) is arranged inside the slide groove (57), and the two ends of the second spring (56) respectively contact the push rod (54) and the inner top wall of the rotating rod (53). A driving motor is installed on one side of the outer wall of the mounting frame (52). The output shaft of the driving motor is fixedly connected to a rotating shaft. The rotating shaft passes through the mounting frame (52) and the rotating rod (53) in sequence and is fixedly connected to the rotating rod (53).

4. The perforated powder reverse filling device for an X-ray diffractometer according to claim 1, characterized in that: The gas pressure member (63) comprises an air storage cylinder (66), a piston plate (67), a third spring (68) and a pressing plate (69); the air storage cylinder (66) is fixedly connected to one side of the side plate (9) and is located in the mounting groove (8); the piston plate (67) is axially sealed and slidably connected to the inside of the air storage cylinder (66); the pressing plate (69) is fixedly connected to a side of the outer wall of the piston plate (67) away from the air storage cylinder (66); the third spring (68) is arranged inside the air storage cylinder (66), and two ends of the third spring (68) are respectively in contact with the air storage cylinder (66) and the piston plate (67); and the air guide pipe (65) is connected to the air storage cylinder (66).

5. The perforated powder reverse filling device for an X-ray diffractometer according to claim 1, characterized in that: Connecting blocks (24) are detachably connected to both sides of the outer wall of the arc-shaped sleeve (21), and both connecting blocks (24) are drivingly connected to the driving mechanism (7).

6. The perforated powder reverse filling device for an X-ray diffractometer according to claim 3, characterized in that: The bottom of the pressing plate (55) is arranged in an arc shape, and the width of the pressing plate (55) is greater than the inner diameter of the hollow column (22).

Images