A multifunctional diffraction powder sample preparation method and device

Abstract

The present application relates to the technical fields of multifunctional diffraction powder sample preparation, in particular to a multifunctional diffraction powder sample preparation device, which comprises a mounting seat and a support, the support is arranged on the mounting seat, characterized in that the mounting seat is provided with a mounting frame assembly, the mounting frame assembly at least comprises a sample frame, a cleaning structure and a pressing structure, the sample frame is arranged on the mounting seat, the cleaning structure and the pressing structure are arranged on the sample frame, the sample frame is formed with a groove, the pressing structure is used for pressing the powder in the groove, the preparation device further comprises a lighting lamp which is movably arranged on the support and located at one side of the sample frame, and a grinding assembly which is movably arranged on the support, the whole device has high automation degree, not only realizes the two-in-one of grinding and powder sample filling preparation, but also can replace manual work to extrude and flatten the powder, thereby reducing the labor input.

Description

Technical Field

[0001] This invention relates to the field of multifunctional diffraction powder sample preparation technology, and more specifically, to a multifunctional diffraction powder sample preparation device. Background Technology

[0002] Diffraction can measure both bulk and powdered samples, with different requirements for different sample sizes and properties. When preparing bulk samples, attention must be paid to the sample area, surface cleanliness, and surface flatness. For example, non-fractured metal bulk samples should be ground as flat as possible and simply polished before testing. This removes the oxide film on the metal surface and eliminates the surface strain layer. Then, ultrasonic cleaning is used to remove surface impurities. Powdered sample preparation is more stringent than bulk sample preparation. Any powder diffraction technique requires the sample to contain extremely fine powder particles, ideally within the 320 mesh size (approximately 40 μm) range, with a sufficient number of grains per volume to ensure that the sample contains a sufficient number of grains per volume under illumination. This is necessary to obtain accurate powder diffraction pattern data.

[0003] Pretreatment: Grinding (dolecular graphite) and sieving: Solid particles are ground using a mortar and pestle (ball mill). Generally, the powder is continuously ground until it reaches a mesh size <360, where it feels smooth to the touch; this indicates the grain size meets the requirements. Besides sample preparation, the method of slide preparation is another factor affecting test results.

[0004] Existing diffraction powder sample preparation devices have a simple structure, but the grinding and pressing of powder samples are performed using two different devices. Furthermore, the powder sample is poured into the sample holder manually, which easily leads to uneven sample filling and a large amount of sample scattered around. The subsequent pressing process is very inconvenient due to the need for manual assistance. Summary of the Invention

[0005] The purpose of this invention is to provide a multifunctional diffraction powder sample preparation device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A multifunctional diffraction powder sample preparation device includes a mounting base and a support, wherein the support is disposed on the mounting base. The mounting base is characterized by having a mounting frame assembly, which includes at least a sample holder, a cleaning structure, and a pressing structure. The sample holder is disposed on the mounting base, and both the cleaning structure and the pressing structure are disposed on the sample holder. The sample holder has grooves formed on it. The pressing structure is used to press the powder within the grooves, and the cleaning structure is used to clean the surface of the pressed sample holder. The preparation device further includes:

[0008] A lighting fixture, movably mounted on a support and located on one side of the sample holder; and

[0009] The grinding assembly, movably mounted on the support, is used to grind the sample and pour the powder into the groove; wherein...

[0010] The grinding assembly includes:

[0011] Guide rods, in a set and symmetrically arranged on the bracket;

[0012] The grinding execution structure, movably mounted on the guide rod, is used to perform the grinding process on the sample; and

[0013] The drive structure is movably mounted on the support and connected to the grinding execution structure, and is used to drive the grinding execution structure to work.

[0014] A further technical solution of this application: the grinding execution structure includes:

[0015] Guide seat number one is mounted on the bracket;

[0016] The grinding box is movably mounted on one side of the sample rack. A movable block is movably mounted inside the first guide seat. The movable block is connected to the grinding box via a telescopic rod. Several discharge holes are formed at the bottom of the grinding box.

[0017] A grinding head is movably disposed within a grinding chamber, and a plurality of grinding blades are arranged circumferentially on both the outer wall of the grinding head and the inner wall of the grinding chamber; and

[0018] The sleeve is movably mounted on the support and connects the grinding head and the drive structure.

[0019] A further technical solution of this application: the driving structure includes:

[0020] A drive seat is mounted on a bracket, and the inner wall of the drive seat is provided with a number of teeth at equal intervals.

[0021] The gear is mounted on the outer wall of the sleeve and meshes with the teeth;

[0022] Guide seat number two is mounted on the drive seat; and

[0023] The push handle is movably mounted on the second guide seat and is movably connected to the sleeve.

[0024] A further technical solution of this application: the grinding head is movably disposed inside the sleeve, the grinding head is provided with a plurality of retaining strips, the sleeve is formed with retaining grooves that cooperate with the retaining strips, the grinding assembly also includes an adjustment structure disposed between the drive seat and the grinding head, the distance between the grinding box and the grinding head is adjusted by the adjustment structure when the grinding head moves relative to the drive seat.

[0025] A further technical solution of this application: the adjustment structure includes:

[0026] An adjusting seat, mounted on a drive seat, has a plurality of protrusions and recesses evenly spaced on it, the protrusions and recesses being spaced apart and smoothly connected; and

[0027] An abutment rod is movably mounted on the sleeve and movably connected to the grinding head. The abutment rod and the adjusting seat are slidably engaged. The recess and the protrusion are located on the moving path of the abutment rod.

[0028] A further technical solution of this application is: a resistance-reducing component is provided between the abutment rod and the adjusting seat to reduce the frictional resistance between the abutment rod and the adjusting seat.

[0029] A further technical solution of this application: the pressing structure includes:

[0030] The extrusion plate, in a set, is movably positioned on one side of the groove;

[0031] An adjusting block is movably mounted on the sample holder, and the adjusting block is movably connected to the extrusion plate via a push arm;

[0032] A cylinder, mounted on the sample holder, with its movable end connected to an adjusting block; and

[0033] The inflation unit, mounted on the bracket and connected to the cylinder, is used to control the extension and retraction of the cylinder.

[0034] A further technical solution of this application: the inflation unit includes a hollow tube, a piston, and a pull rod;

[0035] The hollow tube is mounted on the support, and an output head communicating with the cylinder is provided on the hollow tube. The piston is movably mounted inside the hollow tube and the two are connected by an elastic element. The pull rod is movably mounted on the hollow tube and connects the piston and the adjusting seat.

[0036] A further technical solution of this application: the cleaning structure includes:

[0037] The mounting blocks are arranged in a set and symmetrically on the mounting base.

[0038] Several sliders are symmetrically and movable within guide grooves formed on the sample holder;

[0039] The connecting arm is movably connected between the slider and the mounting block;

[0040] A scraper is mounted on one side of the mounting block; and

[0041] A cleaning brush is mounted on the other side of the mounting block, and the cleaning brush is divided into two areas: fine bristles and coarse bristles.

[0042] A method for preparing multifunctional diffractive powder samples, using the preparation apparatus described in the above technical solution, wherein the specific steps of the preparation method are as follows:

[0043] S100: The block sample is placed inside the crushing execution structure, and the block sample can be ground by controlling the operation of the drive structure.

[0044] S200: Powder that meets the volume requirements generated during the grinding process can fall into the groove. When the drive structure is reset, the pressing structure can be controlled to press and level the powder in the groove.

[0045] S300: Finally, the powder residue on the pressing structure and sample holder surface is cleaned by controlling the cleaning structure to avoid affecting subsequent experiments.

[0046] Compared with the prior art, the technical solution provided by the embodiments of the present invention has the following beneficial effects:

[0047] This invention, through the setting of a grinding execution structure and a driving structure, enables the grinding head and grinding box to reciprocate directly above the groove while the grinding head rotates within the grinding box due to the meshing of teeth and gears. This effectively grinds blocky samples and evenly fills the groove with powder. Furthermore, the interaction between the abutment rod and the adjusting seat allows the grinding head to reciprocate relative to the grinding box while rotating, further improving the grinding effect on blocky samples. The linked structure controls the opening and closing of the extrusion plate as the driving seat moves along the guide rod. The entire device is highly automated, combining grinding and powder sample filling into one process, and replacing manual powder extrusion and leveling, thus reducing labor input. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structure of the multifunctional diffraction powder sample preparation device in an embodiment of the present invention;

[0049] Figure 2 This is a schematic diagram of the mounting frame assembly of the multifunctional diffraction powder sample preparation device in an embodiment of the present invention;

[0050] Figure 3 This is a schematic diagram of the structure of the mounting frame assembly of the multifunctional diffraction powder sample preparation device in the unfolded state in an embodiment of the present invention;

[0051] Figure 4 This is an enlarged structural schematic diagram of point A in the multifunctional diffraction powder sample preparation device in an embodiment of the present invention;

[0052] Figure 5 This is a schematic diagram of the grinding component in the multifunctional diffraction powder sample preparation device in an embodiment of the present invention;

[0053] Figure 6 This is a schematic diagram of the grinding execution structure in the multifunctional diffraction powder sample preparation device in an embodiment of the present invention;

[0054] Figure 7 This is a cross-sectional view of the grinding execution structure in the multifunctional diffraction powder sample preparation device in an embodiment of the present invention;

[0055] Figure 8 This is a schematic diagram of the gas filling unit in the multifunctional diffraction powder sample preparation device in an embodiment of the present invention.

[0056] Explanation of the labels in the diagram:

[0057] 1-Mounting base, 2-Bracket, 3-Guide groove, 4-Slider, 5-Sample rack, 6-Mounting block, 7-Scraper, 8-Extrusion plate, 9-Lighting lamp, 10-Brush, 11-Connecting arm, 12-Groove, 13-Cylinder, 14-Adjusting block, 15-Push arm, 16-Grinding box, 17-Guide seat No. 1, 18-Guide rod, 19-Guide seat No. 2, 20-Drive seat, 21-Adjusting seat, 22-Gear, 23-Sleeve, 24-Abutting rod, 25-Roller, 26-Push handle, 27-Grinding head, 28-Discharge hole, 29-Grinding blade, 30-Clamping strip, 31-Clamping groove, 32-Hollow tube, 33-Output head, 34-Piston, 35-Pull rod, 36-Spring, 37-Moving block, 38-Telescopic rod. Detailed Implementation

[0058] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The present invention will be further described below with reference to the embodiments.

[0059] Please see Figures 1-8In one embodiment of this application, a multifunctional diffraction powder sample preparation device includes a mounting base 1 and a support 2, wherein the support 2 is disposed on the mounting base 1. The device is characterized in that the mounting base 1 is provided with a mounting frame assembly, which includes at least a sample holder 5, a cleaning structure, and a pressing structure. The sample holder 5 is disposed on the mounting base 1, and both the cleaning structure and the pressing structure are disposed on the sample holder 5. A groove 12 is formed on the sample holder 5. The pressing structure is used to press the powder within the groove 12, and the cleaning structure is used to clean the surface of the pressed sample holder 5. The preparation device further includes:

[0060] Lighting lamp 9, movably mounted on bracket 2 and located on one side of sample holder 5; and

[0061] The grinding assembly, movably mounted on the support 2, is used to grind the sample and pour the powder into the groove 12; wherein...

[0062] The grinding assembly includes:

[0063] Guide rods 18, in a set and symmetrically arranged on bracket 2;

[0064] The grinding execution structure is movably mounted on the guide rod 18 for performing the grinding process on the sample; and

[0065] The drive structure is movably mounted on the bracket 2 and connected to the grinding execution structure, and is used to drive the grinding execution structure to work.

[0066] In one specific embodiment, the grinding execution structure includes:

[0067] Guide seat 17 is mounted on bracket 2;

[0068] The grinding box 16 is movably mounted on one side of the sample holder 5. A movable block 37 is movably mounted inside the first guide seat 17. The movable block 37 is connected to the grinding box 16 via a telescopic rod 38. Several discharge holes 28 are formed at the bottom of the grinding box 16.

[0069] A grinding head 27 is movably disposed within a grinding chamber 16, and a plurality of grinding blades 29 are arranged circumferentially on both the outer wall of the grinding head 27 and the inner wall of the grinding chamber 16; and

[0070] The sleeve 23 is movably mounted on the bracket 2 and connects the grinding head 27 and the drive structure.

[0071] In another specific embodiment, the driving structure includes:

[0072] A drive seat 20 is mounted on a bracket 2, and a number of teeth are evenly spaced on the inner wall of the drive seat 20.

[0073] Gear 22 is disposed on the outer wall of sleeve 23 and meshes with teeth;

[0074] Guide seat 19, mounted on drive seat 20; and

[0075] The push handle 26 is movably mounted on the second guide seat 19 and is movably connected to the sleeve 23.

[0076] It should be noted that this embodiment is not limited to the gear 22 and tooth engagement method described above to drive the grinding head 27 to rotate. A stepper motor or servo motor can also be used to drive it, as long as it can control the grinding head 27 to rotate within the grinding box 16. These will not be listed one by one here.

[0077] In practical applications, the block sample is placed in the grinding box 16, and the drive seat 20 and the grinding box 16 are moved towards the support 2 along the guide rod 18, so that the discharge hole 28 on the grinding box 16 is exactly above the groove 12. Then, by pushing and pulling the push handle 26, the grinding box 16 and the grinding head 27 can be driven to reciprocate along the drive seat 20. At this time, under the meshing action between the gear 22 and the teeth, the sleeve 23 and the grinding head 27 are driven to rotate in the grinding box 16, and the block sample is cut by the grinding blade 29, thereby realizing the grinding work of the block sample. Finally, the sample powder that meets the size requirement can be discharged from the discharge hole 28 and finally fall into various positions in the groove 12. When the drive structure is controlled to reset, the pressing structure can be controlled to press and flatten the powder in the groove 12. Finally, the cleaning structure is controlled to clean the powder residue on the pressing structure and the sample holder 5 surface to avoid affecting subsequent experiments.

[0078] Please see Figure 1 , Figure 5 , Figure 6 as well as Figure 7 In another preferred embodiment of this application, the grinding head 27 is movably disposed within the sleeve 23, and the grinding head 27 is provided with a plurality of retaining strips 30. The sleeve 23 is formed with retaining grooves 31 that cooperate with the retaining strips 30. The grinding assembly also includes an adjustment structure disposed between the drive seat 20 and the grinding head 27. When the grinding head 27 moves relative to the drive seat 20, the distance between the grinding box 16 and the grinding head 27 is adjusted by the adjustment structure.

[0079] In this embodiment, the adjustment structure includes, for example:

[0080] An adjustment seat 21 is disposed on the drive seat 20. The adjustment seat 21 has a plurality of protrusions and recesses evenly spaced on it, the protrusions and recesses being spaced apart and smoothly connected to each other.

[0081] The abutment rod 24 is movably mounted on the sleeve 23 and movably connected to the grinding head 27. The abutment rod 24 and the adjusting seat 21 are slidably engaged. The recess and the protrusion are located on the moving path of the abutment rod 24.

[0082] It should be noted that a resistance-reducing component is provided between the abutment rod 24 and the adjusting seat 21 to reduce the frictional resistance between the abutment rod 24 and the adjusting seat 21.

[0083] It should be noted that the drag-reducing component can be a ball or a roller 25. In this embodiment, the drag-reducing component is preferably a roller 25, which is movably disposed at one end of the contact rod 24 and slides in cooperation with the adjusting seat 21.

[0084] In practical applications, while the grinding box 16 and the grinding head 27 are controlled to reciprocate along the drive seat 20 by the push handle 26, the abutment rod 24 can be driven to reciprocate along the adjustment seat 21, so that the roller 25 reciprocates with the protrusions and recesses at different positions, thereby driving the grinding head 27 to reciprocate in the vertical direction while rotating, so that the distance between the grinding head 27 and the grinding box 16 changes continuously, further improving the grinding process of block samples.

[0085] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 8 As another preferred embodiment of this application, the pressing structure includes:

[0086] The extrusion plate 8 is a set and is movably set on one side of the groove 12;

[0087] An adjusting block 14 is movably mounted on the sample holder 5, and the adjusting block 14 is movably connected to the extrusion plate 8 via a push arm 15.

[0088] Cylinder 13 is mounted on sample holder 5, and its movable end is connected to adjusting block 14; and

[0089] An inflation unit is mounted on the bracket 2 and connected to the cylinder 13, used to control the extension and retraction of the cylinder 13.

[0090] In one specific embodiment, the inflation unit includes a hollow tube 32, a piston 34, and a pull rod 35;

[0091] The hollow tube 32 is mounted on the bracket 2. The hollow tube 32 is provided with an output head 33 that communicates with the cylinder 13. The piston 34 is movably mounted inside the hollow tube 32 and the two are connected by an elastic element. The pull rod 35 is movably mounted on the hollow tube 32 and connects the piston 34 and the adjusting seat 21.

[0092] In another specific embodiment, the cleaning structure includes:

[0093] Mounting blocks 6 are arranged in a set and symmetrically movable on mounting base 1;

[0094] Slider 4, in a number that are symmetrically and movablely arranged in the guide groove 3 formed on the sample holder 5;

[0095] Connecting arm 11 is movably connected between slider 4 and mounting block 6;

[0096] Scraper 7 is mounted on one side of mounting block 6; and

[0097] A cleaning brush is mounted on the other side of the mounting block 6, and the cleaning brush is divided into two areas: fine bristles and coarse bristles.

[0098] It should be noted that this embodiment is not limited to the inflation unit described above for inflating the cylinder 13. A blower or air pump can also be used instead, which will not be listed here.

[0099] In addition, the elastic element can be a spring 36, a spring sheet, or an elastic steel plate structure. In this embodiment, the elastic element is preferably a spring 36, which is connected between the piston 34 and the hollow tube 32. The specific model parameters of the spring 36 can be selected according to the actual situation, and will not be listed here.

[0100] When the drive seat 20 moves along the guide rod 18 toward the support 2 to perform the grinding of block samples, it can drive the piston 34 to move along the hollow tube 32, thereby drawing air from the cylinder 13 into the hollow tube 32 through the output hole. This causes the cylinder 13 to contract and drive the adjusting block 14 to move. Under the action of the push arm 15, the extrusion plate 8 can be driven to rotate along its hinge, thereby opening the groove 12. At this time, it is convenient for the sample powder that meets the volume requirements after grinding in the grinding box 16 to fall into the groove 12. After the grinding process, by controlling the drive seat 20 to reset, air in the hollow tube 32 can be injected into the cylinder 13, causing the cylinder 13 to extend and the extrusion plate 8 to reset, thereby extruding the powder in the groove 12. At the same time, by sequentially moving the mounting blocks 6 on both sides of the sample holder 5 along the guide groove 3, the powder residue around the extrusion plate 8 is first scraped off with the scraper 7, and then the sample powder around the extrusion plate 8 is cleaned a second time with the brush 10 to ensure the cleanliness of the sample holder 5 surface.

[0101] Please see Figures 1-8 In another embodiment of this application, a method for preparing a multifunctional diffraction powder sample is provided, using the preparation apparatus described in the above embodiments. The specific steps of the preparation method are as follows:

[0102] S100: The block sample is placed inside the crushing execution structure, and the block sample can be ground by controlling the operation of the drive structure.

[0103] S200: The powder that meets the volume requirements generated during the grinding process can fall into the groove 12. When the drive structure is reset, the pressing structure can be controlled to press and level the powder in the groove 12.

[0104] S300: Finally, the powder residue on the pressing structure and sample holder 5 surface is cleaned by controlling the cleaning structure to avoid affecting subsequent experiments.

[0105] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

[0106] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multifunctional diffraction powder sample preparation device, comprising a mounting base and a support, wherein the support is disposed on the mounting base, characterized in that, The mounting base is provided with a mounting frame assembly, which includes at least a sample holder, a cleaning structure, and a pressing structure. The sample holder is disposed on the mounting base, and both the cleaning structure and the pressing structure are disposed on the sample holder. A groove is formed on the sample holder, and the pressing structure is used to press the powder within the groove. The cleaning structure is used to clean the surface of the sample holder after pressing. The preparation apparatus further includes: A lighting fixture, movably mounted on a support and located on one side of the sample holder; and The grinding assembly, movably mounted on the support, is used to grind the sample and pour the powder into the groove; wherein... The grinding assembly includes: Guide rods, in a set and symmetrically arranged on the bracket; The grinding execution structure, movably mounted on the guide rod, is used to perform the grinding process on the sample; and The drive structure is movably mounted on the bracket and connected to the grinding execution structure, and is used to drive the grinding execution structure to work; The pressing structure includes: The extrusion plate, in a set, is movably positioned on one side of the groove; An adjusting block is movably mounted on the sample holder, and the adjusting block is movably connected to the extrusion plate via a push arm; A cylinder, mounted on the sample holder, with its movable end connected to an adjusting block; and An inflation unit, mounted on a bracket and connected to a cylinder, is used to control the extension and retraction of the cylinder.

2. The multifunctional diffraction powder sample preparation device according to claim 1, characterized in that, The grinding execution structure includes: Guide seat number one is mounted on the bracket; The grinding box is movably mounted on one side of the sample rack. A movable block is movably mounted inside the first guide seat. The movable block is connected to the grinding box via a telescopic rod. Several discharge holes are formed at the bottom of the grinding box. A grinding head is movably disposed within a grinding chamber, and a plurality of grinding blades are arranged circumferentially on both the outer wall of the grinding head and the inner wall of the grinding chamber; and The sleeve is movably mounted on the support and connects the grinding head and the drive structure.

3. The multifunctional diffraction powder sample preparation device according to claim 2, characterized in that, The driving structure includes: A drive seat is mounted on a bracket, and the inner wall of the drive seat is provided with a number of teeth at equal intervals. The gear is mounted on the outer wall of the sleeve and meshes with the teeth; Guide seat number two is mounted on the drive seat; and The push handle is movably mounted on the second guide seat and is movably connected to the sleeve.

4. The multifunctional diffraction powder sample preparation device according to claim 3, characterized in that, The grinding head is movably disposed within the sleeve, and the grinding head is provided with several retaining strips. The sleeve is formed with retaining grooves that cooperate with the retaining strips. The grinding assembly also includes an adjustment structure disposed between the drive seat and the grinding head. When the grinding head moves relative to the drive seat, the distance between the grinding box and the grinding head is adjusted by the adjustment structure.

5. The multifunctional diffraction powder sample preparation device according to claim 4, characterized in that, The adjustment structure includes: An adjustment seat, mounted on a drive seat, has a plurality of protrusions and recesses evenly spaced on it, the protrusions and recesses being spaced apart and smoothly connected; and An abutment rod is movably mounted on the sleeve and movably connected to the grinding head. The abutment rod and the adjusting seat are slidably engaged. The recess and the protrusion are located on the moving path of the abutment rod.

6. The multifunctional diffraction powder sample preparation device according to claim 5, characterized in that, A resistance-reducing component is provided between the abutment rod and the adjusting seat to reduce the frictional resistance between them.

7. The multifunctional diffraction powder sample preparation device according to claim 1, characterized in that, The inflation unit includes a hollow tube, a piston, and a pull rod; The hollow tube is mounted on the support, and an output head communicating with the cylinder is provided on the hollow tube. The piston is movably mounted inside the hollow tube and the two are connected by an elastic element. The pull rod is movably mounted on the hollow tube and connects the piston and the adjusting seat.

8. The multifunctional diffraction powder sample preparation device according to claim 1, characterized in that, The cleaning structure includes: The mounting blocks are arranged in a set and symmetrically on the mounting base. Several sliders are symmetrically and movable within guide grooves formed on the sample holder; The connecting arm is movably connected between the slider and the mounting block; A scraper is mounted on one side of the mounting block; and A cleaning brush is mounted on the other side of the mounting block, and the cleaning brush is divided into two areas: fine bristles and coarse bristles.

9. A method for preparing a multifunctional diffraction powder sample, comprising the preparation apparatus of claim 1, characterized in that, The specific steps of the preparation method are as follows: S100: The block sample is placed inside the crushing execution structure, and the block sample can be ground by controlling the operation of the drive structure. S200: Powder that meets the volume requirements generated during the grinding process can fall into the groove. When the drive structure is reset, the pressing structure can be controlled to press and level the powder in the groove. S300: Finally, the powder residue on the pressing structure and sample holder surface is cleaned by controlling the cleaning structure to avoid affecting subsequent experiments.

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