Fixing device convenient for adjusting X-ray fluorescence spectrometer sample

Abstract

The invention belongs to the technical field of sample fixation of X-ray fluorescence spectrometers, and discloses a fixing device convenient for adjusting a sample of an X-ray fluorescence spectrophotometer, the fixing device comprises an annular chassis arranged on a sample table, the annular chassis is connected with a first support rod and a second support rod which are oppositely arranged through a connecting piece; the first supporting rod and the second supporting rod are slidably connected with two fixing assemblies which are oppositely arranged, each fixing assembly comprises two sliding sleeves, the two sliding sleeves are slidably connected with the first supporting rod and the second supporting rod correspondingly, and two elastic bands which are arranged side by side in the horizontal direction are connected between the two sliding sleeves; the first supporting rod and the second supporting rod are each provided with a locking piece for limiting sliding of the sliding sleeve. The XRF sample table solves the problems that some samples which are not provided with flat surfaces and are in irregular shapes such as circles or arcs cannot be stably placed on the XRF sample table in the detection process, the detection process is delayed, and the detection result is affected.

Description

Technical Field

[0001] The present invention relates to the technical field of sample fixing for an X-ray fluorescence spectrometer, and in particular to a fixing device for facilitating the adjustment of samples for an X-ray fluorescence spectrometer. Background Art

[0002] XRF stands for X-ray Fluorescence Spectrometer. Fluorescence X-rays are a technique for elemental analysis based on the characteristic X-rays (fluorescent X-rays) produced by X-ray-induced transitions in the inner-shell electrons of sample atoms. When a sample is irradiated with high-energy X-rays, the inner-shell electrons of the atoms are excited to transition, and as the outer-shell electrons fill the vacancies, they emit characteristic X-rays. The energy or wavelength of these X-rays corresponds to the element type. By detecting and analyzing the energy and intensity of these characteristic X-rays, the elemental composition and content of the sample can be determined, allowing for qualitative and quantitative analysis. XRF is widely used in fields such as geology, metallurgy, materials science, environmental monitoring, and archaeology.

[0003] The process of X-ray fluorescence spectrometer for solid sample detection is generally as follows:

[0004] Prepare the sample, ensuring the surface is flat and smooth, without obvious scratches, stains, or unevenness. Turn on the instrument power and allow the X-ray tube and other components to preheat for a period of time. Then, calibrate the instrument using a standard sample to ensure measurement accuracy and stability. Then, set appropriate analysis parameters and select the appropriate test method based on the sample type and test requirements. Open the instrument's sample chamber door and place the prepared sample on the XRF sample stage, ensuring that the X-rays can reach the sample surface. After placing the sample, close the sample chamber door, ensuring it is properly sealed, and then begin testing.

[0005] During XRF testing, the sample needs to be placed stably on the XRF sample stage and as close to the X-ray light source as possible to ensure stable excitation of the sample and accurate test results. However, some samples with irregular shapes such as those without flat surfaces, round or curved shapes, cannot be placed stably on the XRF sample stage. For XRF sample stages with automatic operation functions, the samples are more likely to move during the test, which not only affects the test process but also greatly reduces the accuracy and stability of the test results, making the test much more difficult. For example, when performing XRF testing on a round ring sample, the sample needs to be placed stably in an upright position during the test. Since the sample is an irregular round sample, if it is placed directly on the XRF sample stage, the ring's position will move during the test due to the operation of the XRF sample stage. Ultimately, the X-rays cannot reach the sample, delaying the test process and affecting the test results. Summary of the Invention

[0006] The present invention aims to provide a fixing device for facilitating the adjustment of X-ray fluorescence spectrometer samples, thereby solving the problem that samples with irregular shapes such as uneven surfaces, circles or arcs cannot be stably placed on the XRF sample stage, thus delaying the detection process and affecting the detection results.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A fixing device that is convenient for adjusting samples of an X-ray fluorescence spectrometer, comprising an annular chassis arranged on a sample table, wherein the annular chassis is connected to a first support rod and a second support rod arranged oppositely via a connecting piece; the first support rod and the second support rod are slidably connected to two sets of fixing components arranged oppositely, the fixing components comprising two sliding sleeves, the two sliding sleeves are slidably connected to the first support rod and the second support rod respectively, and two elastic bands arranged side by side in a horizontal direction are connected between the two sliding sleeves; the first support rod and the second support rod are both provided with locking pieces for limiting the sliding of the sliding sleeves.

[0009] Furthermore, the two sliding sleeves of each group of the fixing assembly are connected to the elastic band through an adjusting assembly, and the adjusting assembly includes a driving gear and two driven gears rotatably connected to the sliding sleeve, and the two driven gears are engaged with the driving gear; the two driven gears are eccentrically connected to a connecting rod, and the connecting rod is connected to the elastic band; and the sliding sleeve is provided with a limiting member that limits the rotation of the driving gear.

[0010] Furthermore, the limiting member includes an annular support plate, a screw and a locking nut, the support plate is tightly connected to the sleeve, the support plate is provided with an arc-shaped through groove, the screw is tightly connected to the driving gear, and the free end of the screw passes through the through groove, and the free end of the screw is connected to the locking nut by a thread.

[0011] Furthermore, the two driven gears are symmetrically arranged with respect to a plane where the axis of the first support rod and the axis of the second support rod are located.

[0012] Furthermore, the locking member includes a locking screw, and the first support rod and the second support rod are provided with a plurality of first threaded holes spaced apart along the axial direction, and the corresponding position of the sliding sleeve is provided with a second threaded hole adapted to the first threaded hole, and the locking screw is passed through and connected to the first threaded hole and the second threaded hole.

[0013] Furthermore, the first support rod and the second support rod are both provided with a sliding groove along the axial direction, and a slider is connected to the corresponding position of the sliding sleeve, and the slider is slidably connected in the sliding groove.

[0014] Furthermore, the connecting piece is a suction cup, an adhesive sticker or a screw; the annular chassis is connected to the XRF sample stage via the suction cup or the adhesive sticker.

[0015] Furthermore, the elastic band is any one of a rubber elastic band, a silicone elastic band or a fiber knitted elastic band.

[0016] Principles and beneficial effects of the technical solution:

[0017] 1. The present invention provides a fixing device for adjusting an X-ray fluorescence spectrometer sample, comprising an annular chassis arranged on a sample table, wherein the annular chassis is designed to be annular and has a hollow center so that X-rays can be emitted from the bottom to scan the sample to be tested; the annular chassis is placed on the XRF sample table or is tightly attached to the XRF sample table through a suction cup or an adhesive sticker, and the annular chassis is connected to a first support rod and a second support rod that are relatively arranged through a suction cup, an adhesive sticker or a screw; the first support rod and the second support rod are slidably connected to two sets of fixing assemblies that are relatively arranged, and the fixing assemblies are used to fix irregular shaped samples such as round or arc shapes that cannot be stably placed; the fixing assembly comprises two sliding sleeves, which are slidably connected to the first support rod and the second support rod respectively, and a first elastic band and a first elastic band that are arranged side by side in a horizontal direction are connected between the two sliding sleeves. The second elastic band and the two sets of fixing components have a total of four elastic bands, which can apply four support positions to the edge of the sample. Through the elastic force of the elastic bands, the sample is stably clamped between the four elastic bands. After adjustment, it can always be aligned with the detection port of the instrument and close to the X-ray light source, thereby increasing the accuracy and stability of the detection results; and the two sets of fixing components are slidably connected to the first support rod and the second support rod, which is convenient for adjusting the distance between the elastic bands to adapt to samples of different sizes and shapes, increasing the applicability and operability of the device; the first support rod and the second support rod are both provided with locking parts that limit the sliding of the sliding sleeve. When the two sets of fixing components are adjusted to the appropriate distance, they are fixed by the locking parts, which can avoid the sample position from moving due to the automatic operation of the XRF sample stage during the detection process, and the sample deviates from the X-ray light source, affecting the detection results.

[0018] 2. The present invention provides a fixing device for facilitating the adjustment of samples of an X-ray fluorescence spectrometer. The two sliding sleeves of each group of fixing assemblies are connected to the elastic band through an adjusting assembly. The adjusting assembly can adjust the horizontal distance between the two elastic bands of each group of fixing assemblies to change the position where the elastic band applies a supporting force to the sample, so as to further adapt to samples of different sizes and shapes, avoid the support position being concentrated in a local position, thereby increasing the fixing force of the elastic band on the sample, and increasing the stability and operability of the device; specifically, the adjusting assembly includes a driving gear and two driven gears rotatably connected to the sliding sleeve, and the two driven gears are meshed with the driving gear, and the two driven gears are eccentrically connected to a connecting rod, which is connected to the elastic band. When the driving gear is rotated, the driving gear drives the two driven gears to rotate in relative or opposite directions, thereby driving the two connecting rods to rotate in relative or opposite directions, so as to reduce or increase the two elastic forces. The horizontal distance between the belts; and, the two elastic belts can be driven to move at the same time by the driving gear and the two identical driven gears, which is easy to operate and has high adjustment efficiency; in addition, when the driving gear is rotated, the two elastic belts move the same distance in the relative or divergent directions, so that the symmetry plane of the two elastic belts remains unchanged, further increasing the stability of the device; further, through the mutual cooperation of the driving gear, the driven gear and the connecting rod, the minimum distance between the two elastic belts can be close to zero by adjusting the driving gear, which can fix samples of smaller sizes, increase the applicability of the device, and improve the operability range of the device; the sliding sleeve is provided with a limiting member to limit the rotation of the driving gear. When the distance between the two elastic belts is adjusted to the appropriate position, the driving gear is limited to continue to rotate by the limiting member, thereby ensuring that the distance between the two elastic belts is inconvenient, avoiding the movement of the elastic belt during the detection process, causing the sample to loosen and affecting the detection result. Specifically, the limiting part includes a support plate, a screw and a locking nut. The support plate is tightly connected to the sliding sleeve. The support plate is provided with an arc-shaped through groove. When the driving gear is rotated to a suitable position, the locking nut is put on the screw and tightened downward so that the locking nut is tightly abutted against the support plate, thereby fixing the driving gear. The operation is convenient and the fixation is good.

[0019] 3. The present invention provides a fixing device that is convenient for adjusting the sample of an X-ray fluorescence spectrometer, wherein the two driven gears are symmetrically arranged about the plane where the axis of the first support rod and the axis of the second support rod are located, thereby increasing the overall stability of the device; the locking member includes a locking screw, and the first support rod and the second support rod are both provided with a plurality of first threaded holes that are spaced apart along the axial direction, and the locking screw is threadedly connected to the first threaded hole and the second threaded hole, which is convenient to operate and has strong fastening force, thereby increasing the stability of the device; the first support rod and the second support rod are both provided with a sliding groove along the axial direction, and a slider is connected to the corresponding position of the sliding sleeve, and the slider is slidably connected in the sliding groove, and the slide rail groove can play a guiding role to prevent the sliding sleeve from rotating during the sliding process; the connecting member is a suction cup or an adhesive sticker, which can fix the first support rod and the second support rod on the annular chassis, and the annular chassis is directly placed on the XRF sample table, or is connected to the XRF sample table through a suction cup or adhesive sticker, and the suction cup is made of silicone material, which can prevent the annular chassis from damaging the XRF sample table. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to Example 1 of the present invention;

[0021] Figure 2 This is a schematic structural diagram of a fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to embodiment 2 of the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 4 This is a top view of a fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to Example 2 of the present invention;

[0024] Figure 5 for Figure 4 Cross-sectional view of the BB.

[0025] The names of the corresponding symbols in the accompanying drawings are:

[0026] 1. Annular chassis; 2. First support rod; 3. Second support rod; 4. First threaded hole; 5. Slide; 6. Connector; 7. Sleeve; 8. Second threaded hole; 9. Slider; 10. Locking screw; 11. Elastic band; 12. Sample; 13. Driving gear; 14. L-shaped connecting rod; 15. Driven gear; 16. Connecting rod; 17. Support plate; 18. Arc-shaped through groove; 19. Screw; 20. Locking nut. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0028] Example 1

[0029] like Figure 1 As shown, a fixing device for adjusting the sample of an X-ray fluorescence spectrometer is provided, comprising an annular chassis 1 arranged on the sample table, the annular chassis 1 is placed on the XRF sample table or is tightly attached to the XRF sample table through a suction cup or an adhesive sticker, the annular chassis 1 is connected to a first support rod 2 and a second support rod 3 that are relatively arranged through a suction cup, an adhesive sticker or a screw; the first support rod 2 and the second support rod 3 are slidably connected to two sets of fixing components that are relatively arranged, each set of fixing components comprises two sliding sleeves 7, one of the sliding sleeves 7 is slidably connected to the first support rod 2, and the other sliding sleeve 7 is slidably connected to the second support rod 3. Specifically, the first support rod 2 and the second support rod 3 are both provided with a sliding groove 5 along the axial direction, and the corresponding position of the sliding sleeve 7 is connected to a slider 9, and the slider 9 It is slidably connected in the slide groove 5; two elastic bands 11 arranged side by side in the horizontal direction are connected between the two sliding sleeves 7, wherein the elastic band 11 is any one of a rubber elastic band, a silicone elastic band or a fiber knitted elastic band; specifically, connecting rods 16 are respectively connected on both sides of the sliding sleeve 7, and the free ends of the connecting rods 16 are connected to the elastic bands 11; and the first support rod 2 and the second support rod 3 are both provided with locking parts for limiting the sliding of the sliding sleeve 7, and the locking parts include a locking screw 10, and the first support rod 2 and the second support rod 3 are both provided with a plurality of first threaded holes 4 spaced apart along the axial direction, and the corresponding position of the sliding sleeve 7 is provided with a second threaded hole 8 adapted to the first threaded hole 4, and the locking screw 10 is passed through and connected to the first threaded hole 4 and the second threaded hole 8.

[0030] Example 2

[0031] like Figures 2 to 5As shown, a fixing device for adjusting the sample of an X-ray fluorescence spectrometer comprises an annular chassis 1 arranged on the sample stage, the annular chassis 1 is placed on the XRF sample stage or is tightly attached to the XRF sample stage through a suction cup or an adhesive sticker, the annular chassis 1 is connected to a first support rod 2 and a second support rod 3 that are relatively arranged through a suction cup, an adhesive sticker or a screw; the first support rod 2 and the second support rod 3 are slidably connected to two sets of fixing components that are relatively arranged, each set of fixing components comprises two sliding sleeves 7, one of which is slidably connected to the first support rod 2, and the other is slidably connected to the second support rod 3. Specifically, the first The support rod 2 and the second support rod 3 are both provided with a slide groove 5 along the axial direction, and a slider 9 is connected to the corresponding position of the slide sleeve 7, and the slider 9 is slidably connected to the slide groove 5; two elastic bands 11 arranged side by side in the horizontal direction are connected between the two slide sleeves 7, and the elastic band 11 is any one of a rubber elastic band, a silicone elastic band or a fiber knitted elastic band; specifically, the two slide sleeves 7 are connected to the elastic band 11 through an adjustment component, and the adjustment component includes a driving gear 13 and two driven gears 15 rotatably connected to the slide sleeve 7, and the two driven gears 15 are meshed with the driving gear 13, specifically, the driving gear 13 is sleeved on the outer wall of the slide sleeve 7 , and the driving gear 13 is coaxially connected to the sliding sleeve 7 through a bearing; the sliding sleeve 7 is connected to two L-shaped connecting rods 14, the free ends of the L-shaped connecting rods 14 are rotatably connected to the driven gear 15 through a bearing, and the two driven gears 15 are eccentrically connected to a connecting rod 16, and the connecting rod 16 is connected to the elastic band 11; and the two driven gears 15 are symmetrically arranged about the plane where the axis of the first support rod 2 and the axis of the second support rod 3 are common; and the sliding sleeve 7 is provided with a limiting member that limits the rotation of the driving gear 13, and the limiting member includes an annular support plate 17, a screw 19 and a locking nut 20, and the annular support plate 17 is fastened to the sliding sleeve 7 The support plate 17 is provided with an arc-shaped through groove 18, the screw 19 is fastened to the driving gear 13, and the free end of the screw 19 is arranged through the arc-shaped through groove 18, and the free end of the screw 19 is connected to the locking nut 20 by a thread; the first support rod 2 and the second support rod 3 are both provided with a locking member for limiting the sliding of the sleeve 7, and the locking member includes a locking screw 10. The first support rod 2 and the second support rod 3 are both provided with a plurality of first threaded holes 4 spaced apart along the axial direction, and the corresponding position of the sleeve 7 is provided with a second threaded hole 8 adapted to the first threaded hole 4, and the locking screw 10 is passed through and connected to the first threaded hole 4 and the second threaded hole 8.

[0032] The specific implementation process is as follows:

[0033] When using this device, first fix the first support rod 2 and the second support rod 3 on the annular chassis 1 by means of a suction cup, an adhesive sticker or a screw, and connect the annular chassis 1 to the XRF sample stage by means of a suction cup or an adhesive sticker, so that the middle empty part of the annular chassis 1 is aligned with the detection port of the instrument, slide the sleeve 7 according to the size of the sample 12, and after sliding to the specified position, pass the locking screw 10 through the second threaded hole 8 and the first threaded hole 4 to fix the sleeve 7, and then rotate the driving gear 13 according to the size and shape of the sample 12, and the driving gear 13 drives the two driven gears 15 to rotate in opposite directions, and the two driven gears 15 drive their respective connecting rods 16 to rotate in opposite directions, thereby adjusting the distance between the two elastic bands 11. After adjusting to the appropriate distance, rotate the locking nut 20 so that it tightly abuts the support plate 17 to limit the rotation of the driving gear 13, thereby fixing the horizontal distance between the two elastic bands 11, and fix the sample 12 between the four elastic bands 11.

[0034] Among them, the present invention provides a fixing device for facilitating the adjustment of X-ray fluorescence spectrometer samples, wherein the annular chassis 1 is designed to be annular, that is, the middle of the annular chassis 1 is left empty so that X-rays can be emitted from the bottom to scan the sample 12 to be tested; the annular chassis 1 is placed on the XRF sample table or is tightly attached to the XRF sample table through a suction cup or an adhesive sticker, and the annular chassis 1 is connected to a first support rod 2 and a second support rod 3 that are relatively arranged through a suction cup, an adhesive sticker or a screw; the first support rod 2 and the second support rod 3 are slidably connected to two sets of relatively arranged fixing components, and the fixing components are used to fix irregular-shaped samples 12 such as round or arc shapes that cannot be stably placed; the two sets of fixing components have a total of four elastic bands 11, which can apply force to the edge of the sample 12 There are four supporting positions, and the elastic force of the elastic bands 11 stably clamps the sample 12 between the four elastic bands 11, so that it is always aligned with the detection port of the instrument, increasing the accuracy and stability of the detection results; and the two groups of fixing components are slidably connected to the first support rod 2 and the second support rod 3, which is convenient for adjusting the distance between the elastic bands 11 to adapt to samples 12 of different sizes and shapes, increasing the applicability and operability of the device; the first support rod 2 and the second support rod 3 are both provided with locking parts that limit the sliding of the sliding sleeve 7. When the two groups of fixing components are adjusted to a suitable distance, they are fixed by the locking parts to prevent the sample 12 from moving due to the automatic operation of the XRF sample stage during the detection process, deviating from the X-ray light source, and affecting the detection results.

[0035] The two sliding sleeves 7 of each set of fixing components are connected to the elastic belt 11 through the adjusting component. The adjusting component can adjust the horizontal distance between the two elastic belts 11 of each set of fixing components to change the position where the elastic belt 11 applies the supporting force to the sample 12, so as to further adapt to samples 12 of different sizes and shapes, avoid the support position being concentrated in a local position, thereby increasing the fixing force of the elastic belt 11 on the sample 12 and increasing the stability of the device; specifically, the adjusting component includes a driving gear 13, two second driven gears 15 and a connecting rod 16. By setting the driving gear 13 and two identical driven gears 15, the two elastic belts 11 can be driven to move at the same time, which is easy to operate and has high adjustment efficiency; in addition, the driving gear is rotated When the wheel 13 is turned, the two elastic bands 11 move the same distance in the direction of relative or divergence, so that the symmetry plane of the two elastic bands 11 remains unchanged, further increasing the stability of the device. Furthermore, through the mutual cooperation of the driving gear 13, the two driven gears 15 and the connecting rod 16, the minimum distance between the two elastic bands 11 can be adjusted to approach zero by adjusting the driving gear 13, which can fix smaller samples 12 and increase the range of use of the device. The sliding sleeve 7 is provided with a limiting member that limits the rotation of the driving gear 13. The limiting member limits the driving gear 13 from continuing to rotate, thereby ensuring that the distance between the two elastic bands 11 is not inconvenient, avoiding the elastic bands 11 from moving during the detection process and affecting the detection results. The two driven gears 15 are symmetrically arranged about the plane where the axis of the first support rod 2 and the axis of the second support rod 3 are located, increasing the overall stability of the device.

[0036] The first support rod 2 and the second support rod 3 are both provided with a slide groove 5 along the axial direction, and the corresponding position of the sliding sleeve 7 is connected to a slider 9, which is slidably connected to the slide groove 5. The slide rail slide groove 5 can play a guiding role to prevent the sliding sleeve 7 from rotating during the sliding process; the connecting piece 6 is a suction cup or an adhesive sticker, which can fix the first support rod 2 and the second support rod 3 on the annular chassis 1. The annular chassis 1 is directly placed on the XRF sample stage, or is connected to the XRF sample plate through a suction cup or an adhesive sticker, and the suction cup is made of silicone material, which can prevent the annular chassis 1 from damaging the XRF sample stage.

[0037] The above is only an embodiment of the present invention, and common knowledge such as the specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A fixing device for facilitating adjustment of X-ray fluorescence spectrometer samples, characterized in that: The invention comprises an annular chassis (1) arranged on a sample table, wherein the annular chassis (1) is connected to a first support rod (2) and a second support rod (3) arranged oppositely via a connecting member (6); the first support rod (2) and the second support rod (3) are slidably connected to two sets of fixing components arranged oppositely, and the fixing components comprise two sliding sleeves (7), the two sliding sleeves (7) are slidably connected to the first support rod (2) and the second support rod (3), respectively, and two elastic bands (11) arranged side by side in a horizontal direction are connected between the two sliding sleeves (7); the first support rod (2) and the second support rod (3) are both provided with locking members for limiting the sliding of the sliding sleeves (7).

2. The fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to claim 1, characterized in that: The two sliding sleeves (7) of each set of the fixing assembly are connected to the elastic band (11) through an adjusting assembly. The adjusting assembly comprises a driving gear (13) and two driven gears (15) rotatably connected to the sliding sleeve (7), and the two driven gears (15) are meshed with the driving gear (13). The two driven gears (15) are eccentrically connected to a connecting rod (16), and the connecting rod (16) is connected to the elastic band (11). The sliding sleeve (7) is provided with a limiting member for limiting the rotation of the driving gear (13).

3. The fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to claim 2, characterized in that: The limiting member comprises an annular support plate (17), a screw rod (19) and a locking nut (20); the support plate (17) is tightly connected to the sliding sleeve (7); the support plate (17) is provided with an arcuate through groove (18); the screw rod (19) is tightly connected to the driving gear (13); the free end of the screw rod (19) passes through the through groove; the free end of the screw rod (19) is connected to the locking nut (20) by a thread.

4. The fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to claim 2, characterized in that: The two driven gears (15) are symmetrically arranged about a plane where the axis of the first support rod (2) and the axis of the second support rod (3) are located.

5. The fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to claim 1, characterized in that: The locking member comprises a locking screw (10); the first support rod (2) and the second support rod (3) are both provided with a plurality of first threaded holes (4) spaced apart along the axial direction; the sliding sleeve (7) is provided with a second threaded hole (8) adapted to the first threaded hole (4) at a corresponding position; the locking screw (10) is passed through and connected to the first threaded hole (4) and the second threaded hole (8).

6. The fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to claim 1, characterized in that: The first support rod (2) and the second support rod (3) are both provided with a sliding groove (5) along the axial direction, and a slider (9) is connected to the corresponding position of the sliding sleeve (7), and the slider (9) is slidably connected in the sliding groove (5).

7. The fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to claim 1, characterized in that: The connecting piece (6) is a suction cup, an adhesive sticker or a screw; the annular chassis (1) is connected to the XRF sample stage via the suction cup or the adhesive sticker.

8. The fixing device for facilitating adjustment of an X-ray fluorescence spectrometer sample according to claim 1, characterized in that: The elastic band (11) is any one of a rubber elastic band, a silicone elastic band or a fiber knitted elastic band.

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