XRF (X-Ray Fluorescence) analysis sample preparation device for fiber samples

Abstract

The utility model discloses an XRF analysis sample preparation device for fiber samples, which comprises a lower supporting seat, an upper supporting plate fixedly connected to the top of a positioning column, a displacement sensor fixedly mounted on the bottom surface of the upper supporting plate, an adjusting base arranged on the surface of the lower supporting seat, a pressure sensor fixedly mounted on the bottom surface of a positioning groove, and a pressure sensor fixedly mounted on the bottom surface of the positioning groove. A sample preparation cylinder is slidably mounted in the positioning groove, strong magnetic blocks are fixedly mounted on the bottom surface of the sample preparation cylinder and the inner wall of the positioning groove, a lifting pressing rod is slidably mounted in the sample preparation cylinder, a lower pressing plate is fixedly connected to the bottom of the lifting pressing rod, an upper pressing plate is fixedly connected to the top of the lifting pressing rod, and a transmission groove is formed in the lower supporting seat; and a transmission lifting mechanism is arranged in the transmission groove. The utility model has the following effects: through the accurate pressure sensor and the displacement sensor, the pressure and the thickness of each sample preparation can be ensured to be consistent, the quality of the prepared sample is ensured, and the analysis accuracy of the prepared sample is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of fiber sample analysis technology, and more specifically, to a sample preparation device for XRF analysis of fiber samples. Background Technology

[0002] In the scientific analysis and research of fibrous samples, X-ray fluorescence (XFR) analysis, as a non-destructive elemental analysis method, is widely used due to its high efficiency and accuracy. However, XFR analysis has extremely high requirements for sample preparation, especially factors such as sample homogeneity, density, and thickness, which directly affect the accuracy and reliability of the analytical results.

[0003] Traditional methods for preparing fiber samples often have several shortcomings. For example, manual sample pressing makes it difficult to ensure uniform pressure with each press, potentially leading to uneven stress distribution within the sample and affecting the accuracy of XFR analysis. Furthermore, traditional manual sample preparation is time-consuming, labor-intensive, and inefficient. To address these issues, some fiber sample pressing devices have emerged on the market, but these devices still have limitations in structure and function. For instance, traditional devices cannot accurately control the pressing pressure and thickness of the sample, and samples that are too thick or too thin may affect X-ray penetration and analytical sensitivity. This can easily result in substandard samples, limiting the accuracy and application range of XFR analysis. Currently, no effective solutions have been proposed to address these technical problems. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes an XRF analysis sample preparation device for fibrous samples to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A sample preparation device for XRF analysis of fibrous samples includes a lower support base, a positioning column fixedly connected to the surface of the lower support base, an upper support plate fixedly connected to the top of the positioning column, a displacement sensor fixedly installed on the bottom surface of the upper support plate, an adjustment base provided on the surface of the lower support base, a positioning groove opened on the surface of the adjustment base, a pressure sensor fixedly installed on the bottom surface of the positioning groove, a sample preparation cylinder slidably installed inside the positioning groove, strong magnetic blocks fixedly installed on the bottom edge of the sample preparation cylinder and the inner wall of the positioning groove, a lifting pressure rod slidably installed inside the sample preparation cylinder, a lower pressure plate fixedly connected to the bottom of the lifting pressure rod, the lower pressure plate cooperating with the inner wall of the sample preparation cylinder, an upper pressure plate fixedly connected to the top of the lifting pressure rod, and a transmission groove opened inside the lower support base, with a transmission lifting mechanism provided inside the transmission groove.

[0007] Furthermore, in order to provide power for the fabrication of fibrous samples, the transmission lifting mechanism includes a transmission motor fixedly installed inside the transmission groove, a drive sprocket fixedly connected to the transmission shaft of the transmission motor, a driven shaft rotatably installed on one side inside the transmission groove, a driven sprocket fixedly installed on the surface of the driven shaft, and a transmission chain meshing between the drive sprocket and the driven sprocket.

[0008] Furthermore, in order to enable the transmission lifting mechanism to drive the adjusting base to move up and down, threaded transmission rods are fixedly connected to the ends of the transmission shaft and the driven shaft of the transmission motor, and lifting plates are fixedly connected to both sides of the adjusting base, with the lifting plates threadedly connected to the threaded transmission rods.

[0009] Furthermore, in order to allow gas to be released when the lower pressure plate moves inside the sample preparation cylinder, an exhaust hole is provided on the surface of the lower pressure plate.

[0010] Furthermore, in order to control the drive motor and sensors, a control switch is installed on one side of the surface of the adjustment base, and a microcontroller is installed on the other side of the control switch.

[0011] Furthermore, in order to observe the height of the fibers placed inside the sample preparation cylinder, the surface of the sample preparation cylinder is provided with scale lines.

[0012] Furthermore, in order to facilitate the inspection and maintenance of the structure inside the transmission groove, an inspection door is rotatably installed on one side of the surface of the lower support base.

[0013] The beneficial effects of this utility model are as follows: the transmission lifting mechanism drives the adjusting base and the sample preparation cylinder to move upward, so that the upper pressure plate moves to contact the upper support plate, and then the lifting pressure rod drives the lower pressure plate to move to the bottom of the sample preparation cylinder, compressing the fiber material inside the sample preparation cylinder to prepare the sample. During the sample preparation process, the pressure sensor detects the pressure value borne by the fiber. When the pressure value reaches the set pressure, the sample preparation cylinder stops moving upward, and the thickness of the fiber sample is detected by the displacement sensor. The device adopts an automated control method, which reduces the time of manual operation, speeds up the sample preparation speed, and ensures the pressure and thickness of each sample preparation by using precise pressure and displacement sensors, thus guaranteeing the quality of the prepared sample and effectively improving the accuracy of the analysis of the fiber sample after preparation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1This is a schematic diagram of the surface structure of an XRF analysis sample preparation device for fibrous samples according to an embodiment of the present invention;

[0016] Figure 2 This is a side view of an XRF analysis sample preparation device for fibrous samples according to an embodiment of the present invention;

[0017] Figure 3 This is an internal cross-sectional view of the sample preparation cylinder in an XRF analysis sample preparation device for fibrous samples according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of the transmission groove in an XRF analysis sample preparation device for fiber samples according to an embodiment of the present invention.

[0019] In the picture:

[0020] 1. Lower support base; 2. Positioning column; 3. Upper support plate; 4. Displacement sensor; 5. Adjustable base; 6. Positioning groove; 7. Pressure sensor; 8. Sample preparation cylinder; 9. Strong magnetic block; 10. Lifting pressure rod; 11. Lower pressure plate; 12. Upper pressure plate; 13. Transmission groove; 14. Transmission lifting mechanism; 1401. Transmission motor; 1402. Drive sprocket; 1403. Driven shaft; 1404. Driven sprocket; 1405. Transmission chain; 1406. Threaded transmission rod; 1407. Lifting plate; 15. Exhaust port; 16. Control switch; 17. Microcontroller; 18. Scale line; 19. Inspection door. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] According to an embodiment of the present invention, an XRF analysis sample preparation device for fibrous samples is provided.

[0023] Example 1:

[0024] like Figures 1-4As shown, an XRF analysis sample preparation device for fiber samples according to an embodiment of the present invention includes a metal rectangular lower support base 1. Two pairs of positioning columns 2 are fixedly connected to the surface of the lower support base 1. An upper support plate 3 is fixedly connected to the top of the positioning columns 2. A displacement sensor 4 is fixedly installed on the bottom surface of the upper support plate 3. A cylindrical adjusting base 5 is provided on the surface of the lower support base 1. A positioning groove 6 is opened on the surface of the adjusting base 5. A pressure sensor 7 is fixedly installed on the bottom surface of the positioning groove 6. A sample preparation cylinder 8 with open ends is slidably installed inside the positioning groove 6 for holding fiber sample material after contacting the lower support base 1.

[0025] Multiple strong magnetic blocks 9 are fixedly installed on the bottom edge of the sample preparation cylinder 8 and the inner wall of the positioning groove 6. Through the mutual attraction of the strong magnetic blocks 9, the sample preparation cylinder 8 can be stably adsorbed in the positioning groove 6 during fiber sample preparation. A lifting pressure rod 10 is slidably installed inside the sample preparation cylinder 8. The bottom of the lifting pressure rod 10 is fixedly connected to a lower pressure plate 11, which cooperates with the inner wall of the sample preparation cylinder 8 to squeeze the fiber material inside the sample preparation cylinder 8. An upper pressure plate 12 is fixedly connected to the top of the lifting pressure rod 10 to transmit power after contacting the upper support plate 3. A transmission groove 13 is opened inside the lower support base 1. A transmission lifting mechanism 14 is provided inside the transmission groove 13 to provide power for fiber sample preparation.

[0026] like Figures 1-4 As shown, the transmission lifting mechanism 14 includes a transmission motor 1401 fixedly installed inside the transmission groove 13. A drive sprocket 1402 is fixedly connected to the transmission shaft of the transmission motor 1401. A driven shaft 1403 is rotatably installed on one side inside the transmission groove 13. A driven sprocket 1404 is fixedly installed on the surface of the driven shaft 1403. A transmission chain 1405 meshes between the drive sprocket 1402 and the driven sprocket 1404. The transmission shaft of the transmission motor 1401 and the driven shaft 1402 are connected. The ends of 3 are all fixedly connected with threaded transmission rods 1406. A pair of lifting plates 1407 are fixedly connected to both sides of the adjusting base 5. Each lifting plate 1407 is threadedly connected to the corresponding threaded transmission rod 1406. The drive motor 1401 drives the drive sprocket 1402 to rotate, which causes the drive chain 1405 to drive the driven sprocket 1404 to rotate synchronously, thereby realizing the synchronous rotation of the two threaded transmission rods 1406, which drives the lifting plate 1407 and the adjusting base 5 to move up and down.

[0027] The surface of the lower pressure plate 11 has an exhaust hole 15 for venting gas when the lower rock plate moves inside the sample preparation cylinder 8; a control switch 16 is installed on one side of the surface of the adjusting base 5 for controlling the start of the drive motor 1401; a microcontroller 17 is installed on one side of the control switch 16 for controlling the sample preparation cylinder 8 to stop moving upward when the pressure sensor 7 detects the set pressure; the surface of the sample preparation cylinder 8 has scale lines 18 for observing the height of the fiber placed inside the sample preparation cylinder 8; a maintenance door 19 is rotatably installed on one side of the surface of the lower support base 1 for easy access to the structure inside the lower support base 1 for maintenance.

[0028] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0029] In summary, with the help of the above-mentioned technical solution of this utility model, in actual use, a detection threshold of a pressure sensor 7 is set by the microcontroller 17, the sample preparation cylinder 8 is placed in the positioning groove 6 on the surface of the adjusting base 5, and the sample preparation cylinder 8 is stably placed by the mutual attraction of the strong magnetic blocks 9. Then, the crushed fiber material to be sampled is placed in the sample preparation cylinder 8, the drive motor 1401 is started, and the drive motor 1401 drives the drive sprocket 1402 to rotate, so that the drive chain 1405 drives the driven sprocket 1404 to rotate synchronously, thereby realizing the synchronous rotation of the two threaded drive rods 1406, driving the lifting... The lowering plate 1407 and the adjusting base 5 move upward, so that the upper pressure plate 12 moves to contact the upper support plate 3. Then, the lower pressure plate 11 moves to the bottom of the sample preparation cylinder 8 through the lifting pressure rod 10, and the fiber material inside the sample preparation cylinder 8 is squeezed to prepare the sample. During the sample preparation process, the pressure sensor 7 detects the pressure value of the fiber. When the pressure value reaches the set pressure, the microcontroller 17 stops the sample preparation cylinder 8 from moving upward, and the displacement sensor 4 detects the thickness of the fiber sample. Then, through the reverse rotation of the drive motor 1401, the sample preparation cylinder 8 moves the prepared fiber sample inside downward, thereby completing the preparation of the fiber sample.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An apparatus for sample preparation for XRF analysis of a fibrous sample, characterized in that, The lower support base (1) is provided with a positioning column (2) fixedly connected to the surface thereof, the top of the positioning column (2) is fixedly connected with an upper support plate (3), the bottom surface of the upper support plate (3) is fixedly installed with a displacement sensor (4), the surface of the lower support base (1) is provided with an adjusting base (5), the surface of the adjusting base (5) is provided with a positioning groove (6), the bottom surface of the positioning groove (6) is fixedly installed with a pressure sensor (7), the inside of the positioning groove (6) is slidably installed with a sample making cylinder (8), the bottom surface edge of the sample making cylinder (8) and the inner wall of the positioning groove (6) are both fixedly installed with a strong magnetic block (9), the inside of the sample making cylinder (8) is slidably installed with a lifting pressure rod (10), the bottom of the lifting pressure rod (10) is fixedly connected with a lower pressing plate (11), the lower pressing plate (11) is matched with the inner wall of the sample making cylinder (8), the top of the lifting pressure rod (10) is fixedly connected with an upper pressing plate (12), the inside of the lower support base (1) is provided with a transmission groove (13), and the inside of the transmission groove (13) is provided with a transmission lifting mechanism (14).

2. A sample preparation device for XRF analysis of fibrous samples according to claim 1, characterized in that The transmission lifting mechanism (14) comprises a transmission motor (1401) fixedly installed in the transmission groove (13), a driving sprocket (1402) fixedly connected to the transmission shaft of the transmission motor (1401), a driven rotating shaft (1403) rotatably installed on one side of the inside of the transmission groove (13), a driven sprocket (1404) fixedly installed on the surface of the driven rotating shaft (1403), and a transmission chain (1405) in meshing connection between the driving sprocket (1402) and the driven sprocket (1404).

3. A sample preparation device for XRF analysis of fibrous samples according to claim 2, characterized in that The transmission shaft of the transmission motor (1401) and the tail end of the driven rotating shaft (1403) are both fixedly connected with a threaded transmission rod (1406), the adjusting base (5) is fixedly connected with a lifting plate (1407) on both sides, and the lifting plate (1407) is in threaded connection with the threaded transmission rod (1406).

4. The sample preparation device for XRF analysis of fiber-based samples according to claim 1, characterized in that The surface of the lower pressing plate (11) is provided with an exhaust hole (15).

5. The sample preparation device for XRF analysis of fiber-based samples according to claim 1, characterized in that One side of the surface of the adjusting base (5) is installed with a control switch (16), and one side of the control switch (16) is installed with a microcontroller (17).

6. The sample preparation device for XRF analysis of fiber-based samples according to claim 1, characterized in that The surface of the sample making cylinder (8) is provided with a scale line (18).

7. The sample preparation device for XRF analysis of fiber-based samples according to claim 1, characterized in that The surface of the lower support base (1) is rotatably installed with an inspection door (19).

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