Optical filter switching device of X-ray fluorescence spectrophotometer

Abstract

The utility model provides an X-ray fluorescence spectrometer optical filter switching device, which relates to the technical field of spectrometers and comprises a base, four optical filter through holes are formed in the surface of the base, a connecting shaft is embedded in the center of the base through a bearing in a penetrating manner, and mounting grooves are formed in the four optical filter through holes. The X-ray fluorescence spectrometer control terminal is operated, the micro stepping motor works and drives the base to rotate through meshing connection of the gear and the gear ring, when the next optical filter is aligned with the X-ray tube, the micro stepping motor stops working, the X-ray tube emits X-rays, the X-rays are radiated to a sample to be detected, and the sample to be detected is detected. When the X-ray fluorescence spectrophotometer is used for a long time and needs to be overhauled and maintained, an operation button is pressed, a U-shaped extrusion plate is pressed downwards, the bottom end of the U-shaped extrusion plate moves along the inclined surface of the top of a guide inclined plate, a clamping plate moves towards the inner side, one end of the clamping plate is separated from the interior of a clamping groove, and the optical filter is disassembled, overhauled and maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of spectrometers, in particular to a filter switching device for an X-ray fluorescence spectrometer. Background Art

[0002] The working principle of X-ray fluorescence spectrometers is based on the X-ray fluorescence effect, a non-destructive material measurement method. When high-energy X-rays or gamma rays bombard a material, the atoms in the material absorb the energy and become excited, causing the inner electrons to jump, thereby emitting X-rays with specific energies (called fluorescent X-rays). The energy of these fluorescent X-rays is related to the atomic number of the element that excited them, so the type of element can be identified by measuring the energy or wavelength of these rays.

[0003] In the existing technology, X-rays are emitted by an X-ray tube and radiated onto the sample to be tested, causing the element atoms to excite the outer electrons to jump to high-energy orbits. When the irradiation ends, the high-energy electrons will migrate back under the bondage of the atomic nucleus. During the migration, an energy spectrum with a certain characteristic energy will be generated. The ray source emitted by the X-ray tube contains many kinds of electrons. We need to set a filter on the light path before it reaches the sample to filter out excess photoelectrons. In order to cope with different situations and different samples to be tested, different types of filters need to be used. On the other hand, after long-term use of the X-ray fluorescence spectrometer, the X-ray fluorescence spectrometer needs to be inspected and maintained to ensure the stability of the measurement.

[0004] Therefore, a filter switching device for an X-ray fluorescence spectrometer is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a filter switching device for an X-ray fluorescence spectrometer, comprising: a base, four filter through holes are provided on the surface of the base, a connecting shaft is embedded through the center of the base through a bearing, mounting grooves are provided inside the four filter through holes, clamping grooves are provided on both sides of the inner cavity of the four mounting grooves, mounting plates are movably embedded inside the four mounting grooves, and a clamping mechanism is provided inside the top of the four mounting plates, a gear ring is provided on one side of the base surface through four connecting rod fixing sleeves, a bearing is provided at the center of the base surface through four connecting rod fixing sleeves, and a fixing ring is provided on the outer side of the bearing through four connecting rod fixing sleeves.

[0007] As a preferred embodiment, a locking mechanism cavity is provided inside the top of the mounting plate, a filter fixing hole is provided on one side of the mounting plate, and a filter is fixedly embedded inside the filter fixing hole.

[0008] As a preferred embodiment, the locking mechanism includes an operating button, which is movably embedded in the top of the locking mechanism cavity, and the bottom of the operating button is connected to a U-shaped extrusion plate, and both ends of the top of the U-shaped extrusion plate are connected to spring 1, and the other ends of the two springs are connected to the top of the inner cavity of the locking mechanism cavity.

[0009] As a preferred embodiment, two clamping plates are movably embedded at both ends of the interior of the clamping mechanism cavity, and one end of the two clamping plates is movably embedded in the interior of the two clamping slots respectively.

[0010] As a preferred embodiment, both sides of the surfaces of the two card plates are fixedly connected with limiting plates, one side of the limiting plates located on the top of the two card plates is connected with spring 2, and the other ends of the two springs 2 are respectively connected to both sides of the inner cavity of the locking mechanism.

[0011] As a preferred embodiment, the other ends of the two clamping plates are connected to guide inclined plates, and the top ends of the two guide inclined plates are movably embedded in the inner side of the U-shaped extrusion plate.

[0012] As a preferred embodiment, a micro-stepping motor is fixedly mounted on the inner side of the fixing ring via a connecting plate, a gear is fixedly mounted on the output end of the micro-stepping motor, and the gear is meshedly connected with the gear ring.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are:

[0014] 1. The utility model operates the X-ray fluorescence spectrometer control terminal. The micro-stepping motor drives the base to rotate through the meshing connection between the gear and the gear ring. When the next filter is aligned with the X-ray tube, the micro-stepping motor stops working. At this time, the X-ray tube emits X-rays, which pass through the filter, filter out excess photoelectrons, and radiate to the sample to be measured.

[0015] 2. According to the utility model, when the X-ray fluorescence spectrometer needs to be repaired and maintained after a long period of use, the device is first disassembled, and then the operation button is pressed, the U-shaped extrusion plate is pressed down, and the bottom end of the U-shaped extrusion plate moves along the top inclined surface of the guide inclined plate. The position of the U-shaped extrusion plate is fixed, and the card plate moves inward, and one end of the card plate is separated from the inside of the card slot, and the filter is disassembled for repair and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the three-dimensional structure of a filter switching device for an X-ray fluorescence spectrometer provided by the utility model;

[0017] Figure 2 This is a side view of a filter switching device for an X-ray fluorescence spectrometer provided by the utility model;

[0018] Figure 3 This is a schematic diagram of the installation slot structure of a filter switching device for an X-ray fluorescence spectrometer provided by the utility model;

[0019] Figure 4 This is a schematic diagram of the mounting plate structure of a filter switching device for an X-ray fluorescence spectrometer provided by the utility model;

[0020] Figure 5 This is a schematic diagram of the engagement structure of a filter switching device for an X-ray fluorescence spectrometer provided by the present invention.

[0021] Legend:

[0022] 1. Base; 2. Filter through hole; 3. Mounting slot; 4. Clamping slot; 5. Mounting plate; 501. Clamping mechanism cavity; 502. Filter fixing hole; 6. Clamping mechanism; 601. Operation button; 602. U-shaped extrusion plate; 603. Spring 1; 604. Clamping plate; 605. Limiting plate; 606. Spring 2; 607. Guide ramp; 7. Filter; 8. Gear ring; 9. Bearing; 10. Retaining ring; 11. Micro stepping motor; 12. Gear. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-5 The utility model provides a technical solution: a filter switching device for an X-ray fluorescence spectrometer, comprising: a base 1, four filter through holes 2 are provided on the surface of the base 1, a connecting shaft is embedded through a bearing at the center of the base 1, mounting grooves 3 are provided inside the four filter through holes 2, clamping grooves 4 are provided on both sides of the inner cavity of the four mounting grooves 3, mounting plates 5 are movably embedded inside the four mounting grooves 3, and a clamping mechanism 6 is provided inside the top of the four mounting plates 5, a gear ring 8 is provided on one side of the surface of the base 1 through four connecting rod fixing sleeves, a bearing 9 is provided at the center of the surface of the base 1 through four connecting rod fixing sleeves, and a fixing ring 10 is provided on the outer side of the bearing 9 through four connecting rod fixing sleeves.

[0025] Specifically: the filter through hole 2 is used to allow X-rays emitted by the X-ray tube to pass through, the slot 4 is used to clamp and fix the mounting plate 5, the mounting plate 5 is used to fix the filter 7, the clamping mechanism 6 cooperates with the slot 4 to fix the mounting plate 5, the bearing 9 is used to prevent the fixing ring 10 from rotating when the base 1 rotates, the fixing ring 10 is used as a fixing device, and the connecting shaft at the center of the base 1 serves as the rotating axis core when the base 1 rotates.

[0026] In one embodiment, a locking mechanism cavity 501 is provided inside the top of the mounting plate 5 , and a filter fixing hole 502 is provided on one side of the mounting plate 5 , and the filter 7 is fixedly embedded inside the filter fixing hole 502 .

[0027] Specifically, the locking mechanism cavity 501 is used to set the locking mechanism 6, and the filter fixing hole 502 is used to install the filter 7.

[0028] In one embodiment, the locking mechanism 6 includes an operating button 601, which is movably embedded in the top of the locking mechanism cavity 501. The bottom of the operating button 601 is connected to a U-shaped extrusion plate 602, and both ends of the top of the U-shaped extrusion plate 602 are connected to a spring 1 603. The other ends of the two springs 1 603 are connected to the top of the inner cavity of the locking mechanism cavity 501.

[0029] Specifically: when the operation button 601 is pressed, the U-shaped extrusion plate 602 pulls the spring 1 603 downward, and when the operation button 601 is released, the spring 1 603 recovers and pulls the U-shaped extrusion plate 602 upward.

[0030] In one embodiment, two clamping plates 604 are movably embedded at both ends of the interior of the clamping mechanism cavity 501 , and one end of the two clamping plates 604 is movably embedded in the interiors of the two clamping slots 4 .

[0031] Specifically, the clamping plate 604 cooperates with the clamping slot 4 to fix the mounting plate 5 inside the mounting slot 3 .

[0032] In one embodiment, both sides of the surface of the two clamping plates 604 are fixedly connected to the limiting plates 605, and one side of the limiting plates 605 located on the top of the two clamping plates 604 is connected to the spring 2 606, and the other ends of the two springs 2 606 are respectively connected to the two sides of the inner cavity of the clamping mechanism cavity 501.

[0033] Specifically, the limiting plate 605 limits the second spring 606 to ensure the stability of the expansion and contraction of the clamping plate 604 inside the clamping mechanism cavity 501 .

[0034] In one embodiment, the other ends of the two clamping plates 604 are connected to the guiding inclined plates 607 , and the top ends of the two guiding inclined plates 607 are movably embedded in the inner side of the U-shaped extrusion plate 602 .

[0035] Specifically: press the operation button 601, the U-shaped extrusion plate 602 is pressed down, and the bottom end of the U-shaped extrusion plate 602 moves along the top inclined surface of the guide inclined plate 607. The position of the U-shaped extrusion plate 602 is fixed, and the card plate 604 moves inward. One end of the card plate 604 is disengaged from the inside of the card slot 4, the mounting plate 5 is pulled out, and the locking mechanism 6 is released. At this time, the spring 2 606 is restored to pull the card plate 604 to move outward through the limit plate 605, and the spring 1 603 is restored to pull the U-shaped extrusion plate 602 to move upward.

[0036] In one embodiment, a micro-stepping motor 11 is fixedly mounted on the inner side of the fixing ring 10 via a connecting plate. A gear 12 is fixedly mounted on the output end of the micro-stepping motor 11 , and the gear 12 is meshed and connected with the gear ring 8 .

[0037] Specifically, the micro stepping motor 11 drives the base 1 to rotate by meshing the gear 12 with the gear ring 8 .

[0038] Working principle: When using an X-ray fluorescence spectrometer, align the filter through hole 2 with the X-ray tube of the X-ray fluorescence spectrometer for installation. When the filter needs to be switched;

[0039] Operate the X-ray fluorescence spectrometer control terminal. The micro-stepping motor 11 drives the base 1 to rotate through the meshing connection between the gear 12 and the gear ring 8. When the next filter 7 is aligned with the X-ray tube, the micro-stepping motor 11 stops working. At this time, the X-ray tube emits X-rays, which pass through the filter 7, filter out excess photoelectrons, and radiate to the sample being tested.

[0040] Through such a setting, the filter can be switched quickly;

[0041] When the X-ray fluorescence spectrometer needs to be repaired and maintained after a long period of use, the device is first disassembled, and then the operation button 601 is pressed, the U-shaped extrusion plate 602 is pressed down, and the bottom end of the U-shaped extrusion plate 602 moves along the top inclined surface of the guide inclined plate 607. The position of the U-shaped extrusion plate 602 is fixed, and the clamping plate 604 moves inward. One end of the clamping plate 604 is separated from the inside of the clamping slot 4, and the filter is disassembled for repair and maintenance;

[0042] After the inspection and maintenance is completed, press and hold the operating button 601, insert the mounting plate 5 into the interior of the mounting slot 3, and release the operating button 601. At this time, the spring 2 606 recovers and pulls the card plate 604 outward through the limit plate 605. One end of the card plate 604 is embedded in the inner side of the card slot 4 for fixation. The spring 1 603 recovers and pulls the U-shaped extrusion plate 602 upward.

[0043] Through such an arrangement, the filter can be quickly disassembled and installed, making it easy to inspect, maintain and replace the filter.

[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A filter switching device for an X-ray fluorescence spectrometer, characterized in that: include: A base (1) is provided with four filter through holes (2) on the surface of the base (1), a connecting shaft is embedded through a bearing at the center of the base (1), a mounting groove (3) is provided inside the four filter through holes (2), a clamping groove (4) is provided on both sides of the inner cavity of the four mounting grooves (3), a mounting plate (5) is movably embedded inside the four mounting grooves (3), and a clamping mechanism (6) is provided inside the top of the four mounting plates (5), a gear ring (8) is provided on one side of the surface of the base (1) through four connecting rod fixing sleeves, a bearing (9) is provided at the center of the surface of the base (1) through four connecting rod fixing sleeves, and a fixing ring (10) is provided on the outer side of the bearing (9) through four connecting rod fixing sleeves.

2. The filter switching device for an X-ray fluorescence spectrometer according to claim 1, characterized in that: A locking mechanism cavity (501) is provided inside the top of the mounting plate (5), a filter fixing hole (502) is provided on one side of the mounting plate (5), and a filter (7) is fixedly embedded inside the filter fixing hole (502).

3. The filter switching device for an X-ray fluorescence spectrometer according to claim 1, wherein: The locking mechanism (6) includes an operating button (601), which is movably embedded in the top of the locking mechanism cavity (501), and the bottom of the operating button (601) is connected to a U-shaped extrusion plate (602), and both ends of the top of the U-shaped extrusion plate (602) are connected to springs (603), and the other ends of the two springs (603) are connected to the top of the inner cavity of the locking mechanism cavity (501).

4. The filter switching device for an X-ray fluorescence spectrometer according to claim 2, wherein: Two clamping plates (604) are movably embedded at both ends of the interior of the clamping mechanism cavity (501), and one end of the two clamping plates (604) is movably embedded in the interior of the two clamping slots (4).

5. The filter switching device for an X-ray fluorescence spectrometer according to claim 4, characterized in that: Both sides of the surfaces of the two clamping plates (604) are fixedly connected to a limiting plate (605), one side of the limiting plate (605) located on the top of the two clamping plates (604) is connected to a spring 2 (606), and the other ends of the two springs 2 (606) are respectively connected to both sides of the inner cavity of the clamping mechanism cavity (501).

6. The filter switching device for an X-ray fluorescence spectrometer according to claim 4, characterized in that: The other ends of the two clamping plates (604) are connected to a guide inclined plate (607), and the top ends of the two guide inclined plates (607) are movably embedded in the inner side of the U-shaped extrusion plate (602).

7. The filter switching device for an X-ray fluorescence spectrometer according to claim 1, characterized in that: A micro-stepping motor (11) is fixedly mounted on the inner side of the fixing ring (10) via a connecting plate, a gear (12) is fixedly mounted on the output end of the micro-stepping motor (11), and the gear (12) is meshedly connected with the gear ring (8).

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