Excitation device

Abstract

This application discloses an excitation device belonging to the field of oil detection technology. The excitation device is configured with a sample feeding unit, a sample delivery unit, a rotation unit, and a sampling unit. The second driving component in the sample delivery unit ensures high accuracy in positioning of the rod electrode and can stably generate an electric arc with the disk electrode. The third driving component in the sampling unit ensures that the disk electrode can be stably immersed in the sample oil, guaranteeing sampling stability. After one sampling excitation is completed, the first driving component in the sample delivery unit maintains the distance between the rod electrode and the disk electrode at a preset distance, eliminating the need to replace the rod electrode or manually adjust the distance between them. Driven by the first driving component, the next sampling excitation can be performed quickly, improving excitation efficiency and thus enhancing the detection efficiency of the arc direct-reading atomic oil spectrometer. Moreover, the entire process requires no manual operation, has a high degree of automation, and ensures safety during use.

Description

Technical Field

[0001] This application relates to the field of oil detection technology, specifically to an excitation device. Background Technology

[0002] Arc direct-reading atomic oil spectrometers are a type of atomic spectrometer. Their principle involves using a rod electrode and a disk electrode to generate an electric arc, igniting the sample oil. This excites electrons in the metal elements within the oil to transition to an excited state. When the electrons return to their ground state, the metal atoms emit light of a specific wavelength. By measuring the wavelength of this light, the type of metal element is determined, and by measuring the intensity of the light at a specific wavelength, the content of that metal element in the sample oil is determined. However, existing devices for exciting the sample oil require removing and replacing the rod electrode after each ignition. The replaced rod electrode must then be manually moved to a distance from the disk electrode that allows for arc generation before excitation can begin. This entire excitation process is cumbersome, complex, and inefficient, negatively impacting the detection efficiency of arc direct-reading atomic oil spectrometers. Summary of the Invention

[0003] This application provides an excitation device that can solve the problem of low excitation efficiency and low detection efficiency caused by the cumbersome and complicated excitation process of existing excitation devices for direct-reading atomic oil spectrometers.

[0004] This application provides an excitation device, including: a sample introduction unit, comprising a storage unit and a first driving member, the storage unit for accommodating a rod electrode, the first driving member being disposed on one side of the storage unit along a first direction, the first driving member being used to drive the rod electrode to move along the first direction; a sample delivery unit, comprising a slider and a second driving member, the slider being disposed on the side of the storage unit away from the first driving member along the first direction, the slider being used to clamp the rod electrode, the second driving member being used to drive the slider to move along the first direction; and a rotation unit, comprising a rotating shaft, one end of the rotating shaft along its length direction being a bearing end for carrying a disk electrode, the bearing end being disposed on the side of the slider away from the storage unit along the first direction, the rotating shaft being used to carry a disk electrode. The shaft is electrically connected to the disk electrode, and the shaft can be connected to high voltage and drive the disk electrode to rotate. The sampling unit includes a sample box and a third driving member. The sample box is located on the side of the bearing end opposite to the slider and is used to contain sample oil. The third driving member can drive the sample box to move along the first direction, allowing a portion of the disk electrode to be immersed in the sample oil. The second driving member drives the slider to move the clamped rod electrode along the first direction, so that the distance between the adjacent end faces of the rod electrode and the disk electrode is at a preset distance. The first driving member can drive the rod electrode to move, so that the distance between the adjacent end faces of the rod electrode and the disk electrode is maintained at the preset distance.

[0005] Optionally, the preset spacing is 2.0mm to 2.6mm.

[0006] Optionally, the sample introduction unit further includes a fourth driving member; the storage device has a through hole extending through the storage device along the first direction, the number of the through holes is multiple, and they are arranged at intervals along the circumferential direction of the storage device, each through hole can accommodate one rod electrode; the fourth driving member can drive the storage device to rotate, such that the first driving member and one of the through holes are arranged opposite to each other along the first direction, and the first driving member can push the rod electrode in the through hole to move along the first direction, so that the distance between the adjacent end faces of the rod electrode and the disk electrode is maintained at the preset distance.

[0007] Optionally, the rod electrode in the through hole opposite to the first driving member is inserted into the slider as a whole, and the fourth driving member drives the storage device to rotate, so that one of the remaining through holes is opposite to the first driving member.

[0008] Optionally, the second driving member is used to drive the slider so that the clamped rod electrode can be in the following states respectively:

[0009] First state: The rod electrode held by the slider abuts against the disk electrode carried by the bearing end;

[0010] Second state: Along the first direction, the distance between the adjacent end faces of the rod electrode held by the slider and the disk electrode carried by the bearing end is at the preset distance;

[0011] Third state: Along the first direction, the distance between the adjacent end faces of the rod electrode held by the slider and the disk electrode carried by the bearing end is greater than the preset distance.

[0012] Optionally, the sample delivery unit further includes a sleeve for inserting the rod electrode; the slider has an insertion hole extending through the slider in the first direction, the sleeve is inserted into the insertion hole, and an elastic part protrudes from the inner wall of the sleeve. The elastic part is annular in shape, and the inner diameter of the elastic part is smaller than the outer diameter of the rod electrode. The sleeve forms an elastic clamping grip on the rod electrode through the elastic part; the first driving member can drive the rod electrode to move in the sleeve.

[0013] Optionally, the sample delivery unit further includes a first mounting base, a support member, and a first elastic member; the first mounting base has a first mounting cavity inside, and the first mounting base includes a first sidewall and a second sidewall disposed opposite to each other along the first direction; one end of the slider for inserting the rod electrode is located outside the first mounting cavity, and the other end is located inside the first mounting cavity; the support member extends along the first direction, one end of the support member is slidably connected to the slider, and the other end is connected to the second sidewall; the first elastic member is sleeved on the support member, one end of the first elastic member abuts against the second sidewall, and the other end abuts against the slider.

[0014] Optionally, the second driving member includes a first cam and a second cam, the first cam and the second cam respectively abutting against the end of the slider away from the bearing end, and the second driving member can drive the first cam and the second cam to rotate; the first cam is a disc cam, the first cam includes a first end and a second end arranged opposite to each other, the radius of the first end is smaller than the radius of the second end; the second cam is a disc cam, the second cam includes a third end and a fourth end arranged opposite to each other, the radius of the third end is smaller than the radius of the fourth end; the first cam rotates to the second end abutting against the slider, and the first driving member drives the rod electrode held by the slider to abut against the disc electrode carried by the bearing end; the second cam rotates to the fourth end abutting against the second end. The first cam abuts against the slider at its end, and the distance between the adjacent end faces of the rod electrode held by the slider and the disk electrode carried by the bearing end is within the preset distance; the second cam rotates to the third end and abuts against the slider, and the distance between the adjacent end faces of the rod electrode held by the slider and the disk electrode carried by the bearing end is greater than the preset distance; wherein, along the first direction, the first cam rotates to the second end and abuts against the slider, and the distance between the second end and the bearing end is the first distance; the second cam rotates to the fourth end and abuts against the slider, and the distance between the fourth end and the bearing end is the second distance; the first distance is less than the second distance, and the difference between the second distance and the first distance is within the preset distance.

[0015] Optionally, the rotating unit further includes a fifth driving member and a flow guide; the fifth driving member is connected to one end of the rotating shaft away from the bearing end to drive the rotating shaft to rotate; the flow guide extends along the first direction, one end of the flow guide is connected to the rotating shaft, and the other end can be connected to high voltage, the flow guide is electrically connected to the rotating shaft to introduce high voltage into the rotating shaft, thereby making the disk electrode carry high voltage.

[0016] Optionally, the rotating unit further includes a clamping member disposed between the bearing end and the fifth driving member. The clamping member is connected to the guide member and can squeeze the guide member so that the guide member can maintain a conductive connection with the rotating shaft during the rotation of the rotating shaft.

[0017] Optionally, the sampling unit further includes a second mounting base; the second mounting base includes a top plate, a bottom plate, and a side plate, the top plate and the bottom plate are disposed opposite to each other along the first direction, one end of the side plate is connected to the top plate along the first direction, and the other end is connected to the bottom plate to define a second mounting cavity, and the sample box is disposed on the side of the top plate opposite to the bottom plate; the output end of the third driving member is connected to the second mounting base to drive the second mounting base to move along the first direction.

[0018] Optionally, the third driving member includes a second cam, which is the output end of the third driving member. The second cam is disposed inside the second mounting cavity. The third driving member can drive the second cam to rotate, thereby driving the second mounting seat to move along the first direction. The second cam is a disc cam, which includes a third end and a fourth end disposed opposite to each other. The radius of the third end is smaller than the radius of the fourth end. When the second cam rotates to the point where the fourth end abuts against the top plate, a portion of the disc electrode can be immersed in the sample oil in the sample box. When the second cam rotates to the point where the third end abuts against the top plate, the disc electrode separates from the sample box.

[0019] Optionally, the second cam is a constant-width cam, having two parallel tangents with a distance of L1 mm between them, and a distance of L2 mm between the opposing surfaces of the top plate and the bottom plate, satisfying L1 = L2; a first inclined surface is formed at the connection between the side plate and the top plate, and a second inclined surface is formed at the connection between the side plate and the bottom plate; the second cam rotates to the fourth end and abuts against the top plate, where it is tangent to the first inclined surface; the second cam rotates to the third end and abuts against the top plate, where it is tangent to the second inclined surface.

[0020] Optionally, the excitation device further includes a grinding unit, which includes a grinding element and a sixth driving element. The grinding element is disposed on one side of the bearing end along the second direction. The grinding element is rotatable, and the sixth driving element is used to drive the grinding element to move along the second direction. The sixth driving element can drive the grinding element to move along the second direction to between the slider and the rotating shaft. The first driving element can drive the rod electrode to move and insert into the grinding element, and the rotation of the grinding element forms grinding on the rod electrode. The first direction intersects the second direction.

[0021] Optionally, the grinding unit further includes a third mounting base, a seventh driving member, and an eighth driving member; the grinding member and the seventh driving member are spaced apart on the third mounting base along the second direction, the seventh driving member is connected to the grinding member to drive the grinding member to rotate; the sixth driving member is connected to the third mounting base to drive the third mounting base to move along the second direction; the eighth driving member is connected to the sixth driving member to drive the sixth driving member to move the third mounting base along the first direction.

[0022] Optionally, the excitation device further includes a mounting plate, the mounting plate including a first surface and a second surface disposed opposite to each other along a third direction, the sample injection unit, the sample delivery unit and the sampling unit being spaced apart on the first surface along the first direction; the rotating shaft is inserted into the mounting plate, and the bearing end is disposed on the side of the first surface away from the second surface along the third direction; the third direction intersects with the first direction.

[0023] The beneficial effect of this application is that it provides an excitation device, which includes a sample injection unit with a storage component for accommodating a rod electrode, a first driving component for driving the rod electrode to move along a first direction, a sample delivery unit with a slider for clamping the rod electrode, a second driving component for driving the slider to move along the first direction, a rotating unit with a shaft for supporting a disk electrode and capable of rotating the disk electrode, and a sampling unit with a sample container for containing sample oil, and a third driving component for driving the sample container to move along the first direction. In use, the second driving component drives the slider and the clamped rod electrode to move along the first direction towards the bearing end of the rotating shaft, so that the distance between the adjacent end faces of the rod electrode and the disk electrode is at a preset distance. This generates an electric arc between the disk electrode and the rod electrode through the high voltage supplied to the rotating shaft. The third driving component drives the sample container to move along the first direction towards the bearing end of the rotating shaft, immersing the disk electrode in the sample oil in the sample container. The rotation of the disk electrode rotates the sample oil to the electric arc location. An electric arc ignites the sample oil, generating light waves that allow the arc-reading atomic oil spectrometer to collect and analyze the corresponding detection data, completing one sampling excitation. The second driving component ensures high accuracy in positioning the rod electrode and stably generates an electric arc with the disk electrode. The third driving component ensures the disk electrode is stably immersed in the sample oil, guaranteeing sampling stability. After one sampling excitation, the rod electrode shortens due to combustion, causing the distance between the rod and disk electrodes to exceed the preset distance, making it difficult to generate an electric arc. The first driving component moves the rod electrode along a first direction, maintaining the distance between the adjacent ends of the rod and disk electrodes at the preset distance. This eliminates the need to replace the rod electrode or manually adjust the distance between them, allowing for rapid re-sampling excitation. This improves excitation efficiency and the detection efficiency of the arc-reading atomic oil spectrometer. Furthermore, the entire process is highly automated, requiring no manual operation and ensuring safety. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the excitation device provided in the embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the rod motor and disk electrode in the first state of the excitation device provided in the embodiments of this application;

[0027] Figure 3 This is a schematic diagram of the rod motor and disk electrode in the second state of the excitation device provided in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram of the rod motor and disk electrode in the third state of the excitation device provided in the embodiments of this application;

[0029] Figure 5 This is a schematic diagram of the sample introduction unit in the excitation device provided in the embodiments of this application;

[0030] Figure 6 yes Figure 5 Sectional view along axis AA;

[0031] Figure 7 This is a schematic diagram of the sample delivery unit in the excitation device provided in the embodiments of this application;

[0032] Figure 8 This is a schematic diagram of the combined structure of the sleeve and the rod motor in the excitation device provided in the embodiments of this application;

[0033] Figure 9 This is a schematic diagram of the combined structure of the rotating unit and the mounting plate in the excitation device provided in the embodiments of this application;

[0034] Figure 10 yes Figure 9 A magnified structural diagram at point B;

[0035] Figure 11 This is a schematic diagram of the sampling unit in the excitation device provided in the embodiments of this application;

[0036] Figure 12 yes Figure 11 CC-direction sectional view;

[0037] Figure 13 This is a schematic diagram of the grinding unit in the excitation device provided in the embodiments of this application;

[0038] Figure 14 yes Figure 13 DD section view.

[0039] Explanation of reference numerals in the attached figures:

[0040] 100. Excitation device;

[0041] 10. Sample injection unit; 11. Storage unit; 110. Through hole; 12. First driving unit; 13. Fourth driving unit; 14. Housing;

[0042] 20. Sample feeding unit; 21. Slider; 210. Insertion hole; 22. Second driving member; 221. First cam; 2210. First sleeve hole; 2211. First end; 2212. Second end; 222. Second cam; 2220. Second sleeve hole; 2221. Third end; 2222. Fourth end; 223. First drive shaft; 224. First driving end; 23. Sleeve; 230. Elastic part; 24. First mounting base; 240. First mounting cavity; 241. First side wall; 242. Second side wall; 25. Support member; 26. First elastic member;

[0043] 30. Rotating unit; 31. Rotating shaft; 311. Bearing end; 32. Fifth driving component; 33. Flow guide; 331. Protrusion; 34. Pressing component; 341. Pressing seat; 342. Connecting seat; 3420. Receiving cavity; 343. Second elastic component; 35. Fourth mounting seat; 350. Fourth mounting cavity.

[0044] 40. Sampling unit; 41. Sample box; 411. Sample stage; 42. Third drive unit; 421. Third cam; 4210. Tangent; 4211. Fifth end; 4212. Sixth end; 4213. Third sleeve hole; 422. Second drive shaft; 423. Second drive end; 43. Second mounting base; 430. Second mounting cavity; 431. Top plate; 432. Bottom plate; 433. Side plate; 4331. First inclined surface; 4332. Second inclined surface; 44. Fifth mounting base; 441. Base; 442. Support plate; 45. Guide column;

[0045] 50. Grinding unit; 51. Grinding component; 52. Sixth drive component; 521. First fixed block; 522. First push rod; 53. Third mounting base; 530. Third mounting cavity; 54. Seventh drive component; 541. Third transmission shaft; 542. Bushing; 543. Coupling; 544. Drive wheel; 545. First bearing; 546. Driven wheel; 547. Second bearing; 55. Eighth drive component; 551. Second fixed block; 552. Second push rod; 56. Third bearing; 57. Bracket;

[0046] 60. Mounting plate; 61. First side; 62. Second side;

[0047] 70. Detection unit;

[0048] 200. Rod electrode; 201. High voltage wire;

[0049] 300, disk electrode;

[0050] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0052] In some embodiments of this application, an excitation device 100 is provided, with reference to... Figures 1-12 The excitation device 100 includes: a sample introduction unit 10, a sample delivery unit 20, a rotation unit 30, and a sampling unit 40. The excitation device 100 has three intersecting directions: a first direction X, a second direction Y, and a third direction Z, as detailed below. Figures 1 to 11 In the embodiment shown, the first direction X, the second direction Y, and the third direction Z are all orthogonal to each other.

[0053] The excitation device 100 is used in the electric arc direct-reading atomic oil spectrometer to generate the light waves used for detection by the electric arc direct-reading atomic oil spectrometer.

[0054] Reference Figure 1 and Figure 5 The sample introduction unit 10 includes a storage unit 11 and a first driving unit 12, as shown in the figure. Figure 6 Storage unit 11 is used to accommodate rod electrode 200, see reference. Figure 5 The first driving member 12 is disposed on one side of the storage member 11 along the first direction X, and the first driving member 12 is used to drive the rod electrode 200 to move along the first direction X.

[0055] Reference Figures 1-4 as well as Figure 7 The sample delivery unit 20 includes a slider 21 and a second driving member 22, as shown in the reference. Figure 1 The slider 21 is disposed on the side of the storage unit 11 opposite to the first driving member 12 along the first direction X. The slider 21 is used to hold the rod electrode 200. (Refer to...) Figures 2-4 as well as Figure 7The end of the rod electrode 200 that is away from the first driving member 12 extends out of the slider 21 along the first direction X, and the second driving member 22 can drive the slider 21 to move along the first direction X.

[0056] Reference Figures 1-4 and Figure 9 The rotating unit 30 includes a rotating shaft 31. One end of the rotating shaft 31 along its length is a bearing end 311 for carrying the disk electrode 300. The bearing end 311 is disposed on the side of the slider 21 away from the storage device 11 along the first direction X. The rotating shaft 31 is electrically connected to the disk electrode 300. The rotating shaft 31 can be connected to high voltage and can drive the disk electrode 300 to rotate.

[0057] Reference Figures 1-4 as well as Figures 11-12 The sampling unit 40 includes a sample box 41 and a third driving member 42. The sample box 41 is disposed on the side of the bearing end 311 away from the slider 21 along the first direction X. The sample box 41 is used to contain sample oil (not shown in the figure). The third driving member 42 can drive the sample box 41 to move along the first direction X, so that part of the disk electrode 300 can be immersed in the sample oil.

[0058] Specifically, the second driving member 22 can drive the slider 21 to move, so that the slider 21 causes the distance between the adjacent end faces of the rod electrode 200 and the disk electrode 300 to be at a preset distance. The first driving member 12 can drive the rod electrode 200 to move, so that the distance between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is maintained at the preset distance. Specifically, as follows... Figure 1 In the embodiment shown, the distance between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is H mm. The second driving member 22 can drive the slider 21 to move the clamped rod electrode 200 closer to the disk electrode 300 along the first direction X, so that the distance H between the end face of the rod electrode 200 adjacent to the end of the disk electrode 300 along the first direction X and the end face of the disk electrode 300 adjacent to the end of the rod electrode 200 along the first direction X is at a preset distance. When H exceeds the preset distance, the first driving member 12 can drive the rod electrode 200 to extend along the first direction X and approach the disk electrode 300, so that H is maintained at the preset distance.

[0059] Arc direct-reading atomic oil spectrometers are a type of atomic spectrometer. Their principle involves using a rod electrode and a disk electrode to generate an electric arc, igniting the sample oil. This excites electrons in the metal elements within the oil to transition to an excited state. When the electrons return to their ground state, the metal atoms emit light of a specific wavelength. By measuring the wavelength of this light, the type of metal element is determined, and by measuring the intensity of the light at a specific wavelength, the content of that metal element in the sample oil is determined. However, existing devices for exciting the sample oil require removing and replacing the rod electrode after each ignition. The replaced rod electrode must then be manually moved to a distance from the disk electrode that allows for arc generation before excitation can begin. This entire excitation process is cumbersome, complex, and inefficient, negatively impacting the detection efficiency of arc direct-reading atomic oil spectrometers.

[0060] The excitation device 100 provided in this application embodiment comprises a sample introduction unit 10, a sample delivery unit 20, a rotation unit 30, and a sampling unit 40 arranged sequentially along a first direction X. The sample introduction unit 10 contains a storage unit 11 that houses a rod electrode 200. A first driving member 12 drives the rod electrode 200 to move along the first direction X. The sample delivery unit 20 holds the rod electrode 200 via a slider 21, which is driven to move along the first direction X by a second driving member 22. The rotation unit 30 contains a rotating shaft 31 that carries a disk electrode 300. The rotating shaft 31 can drive the disk electrode 300 to rotate and can provide high voltage to the disk electrode 300. The sampling unit 40 contains a sample delivery unit 40. The sample container 41 contains the sample oil. The third driving member 42 drives the sample container 41 to move along the first direction X. During use, the second driving member 22 drives the slider 21, i.e., the clamped rod electrode 200, to move along the first direction X towards the bearing end 311 of the rotating shaft 31. This ensures that the distance H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is at a preset distance. High voltage is supplied through the rotating shaft 31 and conducted to the disk electrode 300. The high-voltage disk electrode 300 and the rod electrode 200 are at the preset distance, thus generating an electric arc between them. The third driving member 42 drives the sample container 41 to move along the first direction X towards the bearing end 311, causing the disk electrode... The sample oil in sample container 41 is immersed in the sample oil, causing the disc electrode to become contaminated with and carry the sample oil. The rotation of the disc electrode 300 rotates the sample oil to the electric arc, which ignites the sample oil. This ignites the sample oil, exciting the electrons of the metal elements in the sample oil to transition to an excited state. When the electrons return to the ground state, the metal atoms emit light of a specific wavelength. The wavelength of this light is measured using an arc direct-reading atomic oil spectrometer to determine the type of metal element in the sample oil. The intensity of the light at a specific wavelength is measured to determine the content of a particular metal element in the sample oil. This completes one sampling excitation cycle for the excitation device 100. During the excitation process, the combustion of the sample oil causes the rod electrode to... The combustion and consumption of 200 causes the overall length of the rod electrode 200 to shorten, which in turn causes the distance H between the rod electrode 200 and the disk electrode 300 to exceed the preset distance. At this time, the first driving member 12 drives the rod electrode 200 to extend along the first direction X and approach the disk electrode 300, so that H is back to the preset distance, thereby keeping the distance H between the rod electrode 200 and the disk electrode 300 at the preset distance, improving the automation of sample introduction, eliminating the tediousness of replacing the rod electrode 200, and eliminating the need to manually adjust the distance between the rod electrode 200 and the disk electrode 300, so as to quickly perform the next sampling and excitation action, improve the excitation efficiency, and thus improve the detection efficiency of the arc direct-reading atomic oil spectrometer.

[0061] The excitation device 100 provided in this application embodiment has a high degree of automation, which reduces the risk of workers operating under high pressure, reduces the tedious operation of repeated grinding and changing of rod electrodes, and eliminates the need for manual adjustment of the preset distance between the rod electrode and the disk electrode, making the detection of the arc direct-reading atomic oil spectrometer more reliable, safe and fast.

[0062] The design of the second driving component 22 and the slider 21 ensures the precise positioning of the rod electrode 200, ensuring that the distance H between the rod electrode 200 and the disk electrode 300 is accurately within the preset distance, thus guaranteeing the stability of the electric arc. The design of the third driving component 42 and the sample box 41 ensures the precise positioning of the sample box 41, allowing the disk electrode 300 to be accurately immersed in the sample oil, ensuring the sampling stability of the sample oil, thereby ensuring the stability of the sample oil ignition, the stability of the continuous combustion of the sample oil at the electric arc, and the stability of the data collected by the arc direct-reading atomic oil spectrometer, as well as the accuracy of subsequent detection. The first driving component 12 allows the rod electrode 200 to be quickly and accurately pushed to the position where H is within the preset distance after one sampling excitation, enabling rapid subsequent sampling excitation, improving the efficiency of the excitation device 100, and thus improving the detection efficiency of the arc direct-reading atomic oil spectrometer.

[0063] In some embodiments, the rod electrode 200 is a carbon rod.

[0064] In some embodiments, the preset spacing is 2.0 mm to 2.6 mm. Specifically, the preset spacing can be any value from 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, and 2.6 mm, or any value within a range of any two values. When the preset spacing is within the above range, it can ensure that an electric arc is stably generated between the rod electrode 200 and the disk electrode 300, thereby ensuring the stability of the combustion activation of the sample oil.

[0065] In some embodiments, the preset spacing is 2.3 mm.

[0066] In some embodiments, refer to Figure 5 The injection unit 10 also includes a fourth driving element 13, as shown in the reference. Figure 6The storage device 11 has a through hole 110 extending through the storage device 11 along the first direction X. There are multiple through holes 110, which are arranged at intervals along the circumferential direction of the storage device 11. Each through hole 110 can accommodate a rod electrode 200. The axial direction of the through hole 110 is parallel to the first direction X. The fourth driving member 13 is connected to the storage device 11 and can drive the storage device 11 to rotate, so that the first driving member 12 is positioned opposite to a through hole 110 along the first direction X. The first driving member 12 can push the rod electrode 200 in the through hole 110 to move along the first direction X, so that the distance H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is maintained at a preset distance. In some specific implementations, the fourth driving member 13 is a rotary motor, the first driving member 12 is a cylinder, and the output end of the fourth driving member 13 is connected to the end of the storage member 11 opposite to the first driving member 12 along the first direction X to drive the storage member 11 to rotate. This causes a through hole 110 to be positioned opposite to the output end (i.e., piston rod or push rod) of the first driving member 12 along the first direction X. The output end of the first driving member 12 extends out, i.e., pushes the rod electrode 200 in the corresponding through hole 110 to extend along the first direction X, so that the distance H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is maintained at a preset distance.

[0067] In some embodiments, the rod electrode 200 in the through hole 110 opposite to the first driving member 12 enters the slider 21 as a whole, and the fourth driving member 13 drives the storage member 11 to rotate, so that one of the remaining through holes 110 is opposite to the first driving member 12. Specifically, after the excitation device 100 completes one sampling excitation process, the rod electrode 200 is consumed due to combustion, resulting in a shorter length. This causes the distance H between the rod electrode 200 and the disk electrode 300 to exceed the preset distance. Therefore, the first driving member 12 needs to drive the rod electrode 200 to extend so that H is maintained at the preset distance to ensure the smooth progress of sampling excitation. When the rod electrode 200 in the corresponding through hole 110 is driven by the first driving member 12 and enters the slider 21 as a whole, there is no rod electrode 200 in the through hole 110. Then, the fourth driving member 13 drives the storage member 11 to rotate, so that one of the other through holes 110 with rod electrodes 200 inserted corresponds to the first driving member 12. This allows the first driving member 12 to continuously replenish the slider 21 with rod electrodes 200, ensuring the continuous operation of the sampling excitation action and ensuring the sampling excitation efficiency of the excitation device 100.

[0068] In some embodiments, the distance that the first driving member 12 pushes out of the corresponding through hole 110 each time is the same as the length consumed by the rod electrode 200 to complete one ignition action, so that the distance H between the rod electrode 200 and the disk electrode 300 is stably maintained at a preset distance.

[0069] In some embodiments, refer to Figure 6 There are 10 through holes 110, and the included angle between two adjacent through holes 110 is 36°. The rod electrode 200 in one through hole 110 is fully inserted into the slider 21. That is, when there is no rod electrode 200 in one through hole 110, the fourth driving member 13 drives the storage unit 11 to rotate 36°, so that an adjacent through hole 110 is positioned opposite to the first driving member 12 along the first direction X, facilitating the first driving member 12 to feed the rod electrode 200. In some other implementations, the number of through holes 110 can be adjusted according to actual usage requirements. The fourth driving member 13 only needs to drive the storage unit 11 to rotate the included angle between two adjacent through holes 110 each time.

[0070] In some embodiments, refer to Figure 2 and Figure 3 The sample injection unit 10 also includes a housing 14, as shown in the reference. Figure 5 and Figure 6 The housing 14 surrounds the storage element 11 in the circumferential direction, and the housing 14 forms a protection for the storage element 11.

[0071] In some embodiments, refer to Figures 2-4 as well as Figures 7-8 The sample delivery unit 20 also includes a sleeve 23 for inserting the rod electrode 200, as shown in the reference. Figure 7 The slider 21 has an insertion hole 210 that extends through the slider 21 along the first direction X. The sleeve 23 is inserted into the insertion hole 210. (Refer to...) Figure 8 An elastic portion 230 protrudes from the inner wall of the sleeve 23. The elastic portion 230 is annular in shape, and its inner diameter is smaller than that of the rod electrode 200. The sleeve 23 elastically clamps the rod electrode 200 through the elastic portion 230, and the first driving member 12 can drive the rod electrode 200 to move within the sleeve 23. Specifically, the structural design of the elastic portion 230 being smaller than the outer diameter of the rod electrode 200 ensures that when the rod electrode 200 is inserted into the sleeve 23, the elastic portion 230 can elastically clamp the rod electrode 200. Consequently, when the slider 21 moves the sleeve 23 and the clamped rod electrode 200 along the first direction X, the rod electrode 200 can be stably positioned within the sleeve 23, preventing displacement of the rod electrode 200 and ensuring the smooth progress of the sampling excitation process. The elastic clamping of the rod electrode 200 by the elastic part 230 enables the first driving member 12 to push the rod electrode 200 located in the sleeve 23 to move along the first direction X, so that the distance H between the rod electrode 200 and the disk electrode 300 is maintained at a preset distance.

[0072] In some embodiments, refer to Figure 2 , Figure 4 and Figure 7The sample delivery unit 20 also includes a first mounting base 24, a support member 25, and a first elastic member 26. The first mounting base 24 has a first mounting cavity 240 inside, specifically as follows: Figure 4 In the illustrated embodiment, the first mounting base 24 is frame-shaped and includes a first sidewall 241 and a second sidewall 242 disposed opposite to each other along the first direction X. The slider 21 is partially disposed in the first mounting cavity 240. Specifically, one end of the slider 21 used for inserting the rod electrode 200 is located outside the first mounting cavity 240, and the other end is located inside the first mounting cavity 240. (Refer to...) Figures 1-4 as well as Figure 7 The output end of the second driving element 22 is connected to the slider 21 to drive the slider 21 to move along the first direction X, as shown in the reference. Figure 4 and Figure 7 The support member 25 extends along the first direction X. One end of the support member 25 is slidably connected to the slider 21, and the other end is connected to the second sidewall 242. The first elastic member 26 is sleeved on the support member 25. One end of the first elastic member 26 abuts against the second sidewall 242, and the other end abuts against the slider 21. The second driving member 22 drives the slider 21 to approach the storage member 11 along the first direction X, so that the sleeve 23 aligns with the through hole 110 on the storage member 11 corresponding to the first driving member 12. The slider 21 clamps the rod electrode 200 in the aligned through hole 110 through the sleeve 23, and the end of the rod electrode 200 away from the first driving member 12 along the first direction X extends out of the sleeve 23. The cooperation design of the support member 25 and the first elastic member 26, in which the second driving member 22 drives the slider 21 to move the sleeve 23 and the clamped rod electrode 200 to approach the disk electrode 300 along the first direction X, the slider 21 relative to the support member 25 5. Move and squeeze the first elastic element 26. The first elastic element 26 can buffer and limit the slider 21, ensuring the stability of the slider 21 moving along the first direction X. This keeps the distance H between the rod electrode 200 and the disk electrode 300 at a preset distance. After the excitation device 100 completes one sampling excitation process, the slider 21 can drive the sleeve 23 and the clamped rod electrode 200 away from the disk electrode 300 along the first direction X under the action of the elastic deformation of the first elastic element 26, so as to terminate the electric arc between the rod electrode 200 and the disk electrode 300 in time, so as to facilitate the smooth progress of the next sampling excitation process.

[0073] Among them, specifically such as Figures 1-4 as well as Figure 7 In the embodiment shown, along the third direction Z, one end of the slider 21 with the sleeve 23 is located outside the first mounting cavity 240, and the other end of the slider 21 away from the sleeve 23 is located inside the first mounting cavity 240. Thus, during the movement of the slider 21 along the first direction X, the first mounting seat 24 is prevented from interfering with the sleeve 23, ensuring the smooth movement of the sleeve 23 and the clamped rod electrode 200.

[0074] In some embodiments, the second drive member 22 is a motor, specifically a telescopic motor, to drive the slider 21 to move (rise or fall) along the first direction X.

[0075] In some embodiments, refer to Figures 2-4 The second driving member 22 is used to drive the slider 21 so that the clamped rod electrode 200 can be in the following states respectively:

[0076] First state: The rod electrode 200 held by the slider 21 abuts against the disk electrode 300 carried by the bearing end 311;

[0077] Second state: Along the first direction X, the distance between the adjacent end faces of the rod electrode 200 held by the slider 21 and the disk electrode 300 carried by the bearing end 311 is at a preset distance.

[0078] Third state: Along the first direction X, the distance between the adjacent end faces of the rod electrode 200 held by the slider 21 and the disk electrode 300 carried by the bearing end 311 is greater than the preset distance.

[0079] In some embodiments, the second drive member 22 is a cam mechanism, as shown in the figure. Figures 2-4 as well as Figure 7 The second driving member 22 includes a first cam 221 and a second cam 222. The first cam 221 and the second cam 222 cooperate to form the output end of the second driving member 22, as shown in the figure below. Figures 2-4 as well as Figure 7 In the illustrated embodiment, the first cam 221 and the second cam 222 are spaced apart along the second direction Y, and the first cam 221 and the second cam 222 are spaced apart from the first mounting base 24 along the first direction X. The first cam 221 and the second cam 222 respectively abut against the end of the slider 21 away from the bearing end 311 along the first direction X. In other words, the first cam 221 and the second cam 222 respectively abut against the end of the slider 21 adjacent to the first sidewall 241 along the first direction X. The second driving member 22 can drive the first cam 221 and the second cam 222 to rotate. (Refer to...) Figures 2-4 as well as Figure 7 The first cam 221 is a disc cam, which includes a first end 2211 and a second end 2212 that are arranged opposite to each other. The radius of the first end 2211 is smaller than the radius of the second end 2212. The second cam 222 is a disc cam, which includes a third end 2221 and a fourth end 2222 that are arranged opposite to each other. The radius of the third end 2221 is smaller than the radius of the fourth end 2222.

[0080] The second driving member 22 can drive the first cam 221 and the second cam 222 to rotate, so that the distance H between the adjacent end faces of the slider 21 and the clamped rod electrode 200 and the disk electrode 300 supported by the bearing end 311 can be in the following states respectively:

[0081] First state: The first cam 221 rotates to the second end 2212 and abuts against the slider 21. The slider 21 descends to the lowest position along the first direction X. The first driving member 12 drives the rod electrode 200 held by the slider 21 to abut against the disk electrode 300 carried by the bearing end 311.

[0082] Second state: The second cam 222 rotates to the fourth end 2222 and abuts against the slider 21. The slider 21 rises along the first direction X to the excitation position. The distance H between the adjacent end faces of the rod electrode 200 held by the slider 21 and the disk electrode 300 carried by the bearing end 311 is at a preset distance.

[0083] Third state: The second cam 222 rotates to the third end 2221 and abuts against the slider 21. The slider 21 rises to the highest position along the first direction X. The distance H between the adjacent end faces of the rod electrode 200 held by the slider 21 and the disk electrode 300 carried by the bearing end 311 is greater than the preset distance.

[0084] The second driving component 22 adopts a cam mechanism design, and the second driving component 22 adopts a double cam structure design in which the first cam 221 and the second cam 222 cooperate. Combined with the fact that the distance between the second end 2212 of the first cam 221 with a relatively large radius and the fourth end 2222 of the second cam 222 with a relatively large radius is at a preset distance, the slider 21 and the rod electrode 200 held by the sleeve 23 can move along the first direction X to the corresponding designated position. Through the sequential rotation of the first cam 221 and the second cam 222, the slider 21 and the sleeve 23 can stably switch between the first state, the second state and the third state, ensuring the accuracy of the rod electrode 200 in position near the end of the disk electrode 300 along the first direction X, which facilitates the sampling and excitation process of the excitation device 100 and facilitates the subsequent processing after the sampling and excitation process, thereby improving the sampling and excitation efficiency.

[0085] Moreover, the design of the cam mechanism can reduce the complexity of the second drive member 22 driving the slider 21 and the clamped rod electrode 200, and ensure the accuracy of adjusting the distance H between the adjacent end faces of the rod electrode 200 and the disk electrode 300.

[0086] Among them, reference Figure 2Along the first direction X, the first cam 221 rotates to its second end 2212, which abuts against the slider 21. The distance between the second end 2212 and the bearing end 311 is the first distance (not shown in the figure). The second cam 222 rotates to its fourth end 2222, which abuts against the slider 21. The distance between the fourth end 2222 and the bearing end 311 is the second distance (not shown in the figure). The first distance is less than the second distance, and the difference between the second distance and the first distance is within a preset distance. Thus, when switching from the first state to the second state, the distance H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 can be stably maintained at the preset distance, ensuring the stability of the arc generated during the excitation process of the excitation device 100 and ensuring the accuracy of subsequent detection.

[0087] Specifically, the first state is as follows: the second end 2212 of the first cam 221, which has a relatively larger radius, abuts against the slider 21. During the process of the first cam 221 rotating from the first end 2211, which has a relatively smaller radius, abutting against the slider 21, to the second end 2212, which has a relatively larger radius, abutting against the slider 21, the slider 21 drives the sleeve 23 and the clamped rod electrode 200 along the first direction X to approach the disk electrode 300 carried by the bearing end 311 of the rotating shaft 31. While the slider 21 moves along the first direction X, it squeezes the first elastic element 26. (Refer to...) Figure 2 When the second end 2212 abuts against the slider 21, the slider 21 is at its lowest position within its range of movement along the first direction X. The first driving member 12 drives the rod electrode 200 held by the slider 21 to abut against the disk electrode 300 along the first direction X, that is, the distance H between the adjacent end faces of the rod electrode 200 held by the slider 21 and the disk electrode 300 carried by the bearing end 311 is 0. Moreover, when the second end 2212 abuts against the slider 21, refer to Figure 2 The third end 2221 and the fourth end 2222 of the second cam 222 do not contact the slider 21.

[0088] The second state is as follows: the fourth end 2222 of the second cam 222, which has a relatively larger radius, abuts against the slider 21. During the process of the second cam 222 rotating from the third end 2221, which has a relatively smaller radius, abutting against the slider 21, to the fourth end 2222, which has a relatively larger radius, abutting against the slider 21, because the first distance between the second end 2212 and the bearing end 311 when the second end 2212 abuts against the slider 21 is less than the second distance between the fourth end 2222 and the bearing end 311 when the fourth end 2222 abuts against the slider 21, the slider 21... Under the elastic deformation of the first elastic element 26, it moves away from the bearing end 311 along the first direction X. That is, the slider 21 drives the clamped rod electrode 200 away from the disk electrode 300, releasing the contact with the disk electrode 300. When the second cam 222 rotates to the fourth end 2222 abutting against the slider 21, since the difference between the second distance and the first distance is at a preset distance, the distance H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is at a preset distance. At the same time, the slider 21 still maintains the compression of the first elastic element 26. Moreover, when the second end 2212 abuts against the slider 21, referring to... Figure 3 Neither the first end 2211 nor the second end 2212 of the first cam 221 are in contact with the slider 21. During the process of the second cam 222 rotating from the third end 2221 abutting against the slider 21 to the fourth end 2222 abutting against the slider 21, the first driving member 12 retracts along the first direction X.

[0089] The third state is as follows: the third end 2221 of the second cam 222 with a relatively small radius abuts against the slider 21. During the process of the second cam 222 rotating from the fourth end 2222 with a relatively large radius abutting against the slider 21 to the third end 2221 with a relatively small radius abutting against the slider 21, the slider 21 continues to move away from the bearing end 311 along the first direction X under the action of the elastic deformation of the first elastic element 26. That is, the slider 21 drives the clamped rod electrode 200 to move further away from the disk electrode 300. When the second cam 222 rotates to the third end 2221 abutting against the slider 21, the distance H between the adjacent end faces of the rod electrode 200 clamped by the slider 21 and the disk electrode 300 carried by the bearing end 311 is greater than the preset distance. This allows the grinding element 51 in the subsequent grinding unit 50 to extend between the rod electrode 200 and the disk electrode 300, grinding the end of the rod electrode 200 after the excitation process. This ensures the cleanliness of the rod electrode 200 end during the next excitation process, guaranteeing smooth excitation and accurate subsequent testing. Furthermore, referring to... Figure 4 When the third end 2221 abuts against the slider 21, neither the first end 2211 nor the second end 2212 of the first cam 221 will contact the slider 21.

[0090] In some embodiments, refer to Figures 2-4 and Figure 7The second driving component 22 also includes a first drive shaft 223 and a first driving end 224. The first drive shaft 223 is mounted on the first side wall 241, and the first driving end 224 is connected to the first drive shaft 223. The first driving end 224 drives the first drive shaft 223 to rotate, thereby driving the first cam 221 and the second cam 222 to rotate.

[0091] Among them, reference Figure 3 The first cam 221 has a first sleeve hole 2210 fitted onto the first drive shaft 223. The radius of the first end 2211 is the distance between the first end 2211 and the center of the first sleeve hole 2210, and the radius of the second end 2212 is the distance between the second end 2212 and the center of the first sleeve hole 2210. Specifically, the first end 2211 is the closest point on the contour line of the first cam 221, and the second end 2212 is the farthest point on the contour line of the first cam 221. The closest point on the contour line of the first cam 221 refers to the closest position point on the contour line of the first cam 221 that contacts the slider 21 and causes the slider 21 to move in the expected direction X during rotation. The farthest point on the contour line of the first cam 221 refers to the farthest position point on the contour line of the first cam 221 that contacts the slider 21 and causes the slider 21 to move in the expected direction X during rotation.

[0092] Reference Figure 2 The second cam 222 has a second sleeve hole 2220 fitted onto the first drive shaft 223. The radius of the third end 2221 is the distance between the third end 2221 and the center of the second sleeve hole 2220, and the radius of the fourth end 2222 is the distance between the fourth end 2222 and the center of the second sleeve hole 2220. Specifically, the third end 2221 is the closest point on the contour line of the second cam 222, and the fourth end 2222 is the farthest point on the contour line of the second cam 222. The closest point on the contour line of the second cam 222 refers to the closest position point on the contour line of the second cam 222 that contacts the slider 21 and causes the slider 21 to move in the expected direction X during rotation. The farthest point on the contour line of the second cam 222 refers to the farthest position point on the contour line of the second cam 222 that contacts the slider 21 and causes the slider 21 to move in the expected direction X during rotation.

[0093] Furthermore, the first elastic element 26 provides support for the slider 21, thereby ensuring the stability of the slider 21 and the clamped rod electrode 200 as they move along the first direction X. In some embodiments, refer to Figures 2-4 as well as Figure 9 and Figure 10 The rotating unit 30 also includes a fifth driving member 32, as shown in the reference. Figure 9 and Figure 10 The rotating unit 30 also includes a guide member 33, as shown in the reference. Figure 9The fifth driving component 32 is connected to one end of the rotating shaft 31 supported by the bearing end 311 to drive the rotating shaft 31 to rotate. Specifically, the end of the rotating shaft 31 facing away from the bearing end 311 in the third direction Z is connected to the fifth driving component 32 via a synchronous pulley. The fifth driving component 32 is a rotary motor that drives the rotating shaft 31 to rotate via the synchronous pulley. (Refer to...) Figure 7 The guide member 33 extends along the first direction X. One end of the guide member 33 is connected to the rotating shaft 31, and the other end can be connected to high voltage. The guide member 33 is electrically connected to the rotating shaft 31 to introduce high voltage into the rotating shaft 31, so that the disk electrode 300 has high voltage. Specifically, the guide member 33 is a high voltage needle. Both the guide member 33 and the rotating shaft 31 are conductive materials. One end of the guide member 33 abuts against the rotating shaft 31 so that the disk electrode 300 has high voltage, thereby forming a pressure difference between the disk electrode 300 and the rod electrode 200 at a preset distance to generate an electric arc.

[0094] In some embodiments, refer to Figure 9 and Figure 10 The rotating unit 30 also includes a clamping member 34, which is disposed between the bearing end 311 and the fifth driving member 32. The clamping member 34 is connected to the guide member 33 and can compress the guide member 33, so that the guide member 33 can maintain a conductive connection with the rotating shaft 31 during the rotation of the rotating shaft 31. The design of the clamping member 34 forms a compression on the guide member 33, thereby ensuring a stable contact between the guide member 33 and the rotating shaft 31. Even during the rotation of the rotating shaft 31, the conductive connection between the guide member 33 and the rotating shaft 31 can still be maintained, thereby ensuring the stable transmission of high voltage, ensuring the stability and continuity of the arc generated between the rod electrode 200 and the disk electrode 300 during the excitation process, and ensuring the stability of the excitation.

[0095] In some embodiments, refer to Figure 9 The rotating unit 30 also includes a fourth mounting base 35, which has a fourth mounting cavity 350 inside. The rotating shaft 31 is inserted into the fourth mounting base 35, and the fourth mounting base 35 provides support and fixation for the rotating shaft 31. (Refer to...) Figure 9 and Figure 10The clamping member 34 also includes a clamping seat 341, a connecting seat 342, and a second elastic member 343. The connecting seat 342 extends along the first direction X and is tubular in shape. One end of the connecting seat 342 is inserted into one side of the fourth mounting seat 35. The connecting seat 342 has a receiving cavity 3420 communicating with the fourth mounting cavity 350. The guide member 33 is inserted into the connecting seat 342. A protrusion 331 protrudes from the side wall of the guide member 33 located in the receiving cavity 3420. The protrusion 331 surrounds the guide member 33 along its circumferential direction. One end of the guide member 33 along the first direction X extends into the fourth mounting cavity 350 and abuts against the rotating shaft 31 located in the fourth mounting cavity 350. The other end of the flow element 33 is located outside the connecting seat 342 to connect to high voltage. The clamping seat 341 is inserted into the end of the connecting seat 342 away from the fourth mounting seat 35. The clamping seat 341 is sleeved on the flow guide 33. The second elastic element 343 is sleeved on the flow guide 33 located in the receiving cavity 3420. One end of the second elastic element 343 abuts against the clamping seat 341, and the other end abuts against the protrusion 331. The design of the clamping seat 341 and the second elastic element 343 makes the clamping seat 341 compress the second elastic element 343, thereby pressing the flow guide 33 against the side of the rotating shaft 31. When the fifth driving member 32 drives the rotating shaft 31 to rotate, the electrical conduction between the rotating shaft 31 and the flow guide 33 can be maintained at all times.

[0096] In some embodiments, refer to Figure 11 and Figure 12 The sampling unit 40 also includes a second mounting base 43, which includes a top plate 431, a bottom plate 432, and a side plate 433. The top plate 431 and the bottom plate 432 are arranged opposite each other along the first direction X. One end of the side plate 433 along the first direction X is connected to the top plate 431, and the other end is connected to the bottom plate 432 to define a second mounting cavity 430. Specifically, the top plate 431, the bottom plate 432, and the side plate 433 are connected to form a transverse U-shaped structure and define the second mounting cavity 430 inside. The sample box 41 is disposed on the side of the top plate 431 facing away from the bottom plate 432 along the first direction X. The output end of the third driving member 42 is connected to the second mounting base 43 to drive the second mounting base 43 to move along the first direction X.

[0097] In some embodiments, the third drive member 42 is a motor, specifically a telescopic motor, to drive the second mounting base 43 to move (rise or fall) along the first direction X.

[0098] In some embodiments, the third drive member 42 is a cam mechanism, see reference. Figures 2-4 as well as Figure 11 and Figure 12The third driving member 42 includes a third cam 421, which is the output end of the third driving member 42. The third cam 421 is disposed inside the second mounting cavity 430. The third driving member 42 can drive the third cam 421 to rotate, thereby driving the second mounting seat 43 to move along the first direction X. Specifically, refer to... Figure 9 The third cam 421 includes a fifth end 4211 and a sixth end 4212 arranged opposite to each other. The radius of the fifth end 4211 is smaller than the radius of the sixth end 4212. When the third cam 421 rotates to the point where the sixth end 4212 abuts against the top plate 431, a portion of the disk electrode 300 can be immersed in the sample oil in the sample box 41. When the third cam 421 rotates to the point where the fifth end 4211 abuts against the top plate 431, the disk electrode 300 separates from the sample box 41.

[0099] Specifically, such as Figure 11 and Figure 12 In the embodiment shown, the sampling unit 40 further includes a fifth mounting base 44 and a guide post 45. The fifth mounting base 44 includes a base 441 and two support plates 442. The two support plates 442 are spaced apart at both ends of the base 441 along the second direction Y. The base 441 and the two support plates 442 cooperate to form a U-shaped structure. The second mounting base 43 is disposed between the two support plates 442. Specifically, the side plate 433 and the base 441 are spaced apart along the third direction Z. The two support plates 442 are disposed between the top plate 431 and the bottom plate 432. The support plates 442 and the bottom plate 432 are stacked along the first direction X. The guide post 45 is inserted into the bottom plate 432, the support plates 442 and the top plate 431. The top plate 431 can slide along the guide post 45. Specifically, by rotating the third cam 421, the top plate 431 is driven to slide along the first direction X on the guide post 45, so as to drive the sample box 41 to move along the first direction X.

[0100] The third driving component 42 adopts a cam mechanism design. The rotation of the third cam 421 drives the top plate 431 to move along the first direction X, so that the sample box 41 can stably switch between the first state and the second state. Specifically, the first state is: the sixth end 4212 with a relatively large radius abuts against the top plate 431. During the process of the third cam 421 rotating from the fifth end 4211 with a relatively small radius abutting against the top plate 431 to the sixth end 4212 with a relatively large radius abutting against the top plate 431, the top plate 431 drives the sample box 41 to approach the disk electrode 300 carried by the bearing end 311 of the rotating shaft 31 along the first direction X. When the sixth end 4212 abuts against the top plate 431, part of the disk electrode 300 is immersed in the sample oil of the sample box 41, realizing the sampling of the sample oil by the disk electrode 300. The second state is as follows: the fifth end 4211 with a relatively smaller radius abuts against the top plate 431. During the process of the third cam 421 rotating from the sixth end 4212 with a relatively larger radius abutting against the top plate 431 to the fifth end 4211 with a relatively smaller radius abutting against the top plate 431, the top plate 431 drives the sample box 41 away from the disk electrode 300 along the first direction X. When the fifth end 4211 abuts against the top plate 431, the sample box 41 separates from the disk electrode 300, and the disk electrode 300 cannot sample from the sample box 41. Thus, by switching between the two states of the third cam 421, the positioning accuracy of the sample box 41 and the timely separation of the sample box 41 from the disk electrode 300 can be guaranteed. In other words, the third driving component 42 only needs to drive the top plate 431 to move along the guide post 45 to ensure the positioning accuracy of the sample box 41 and the timely separation of the sample box 41 from the disk electrode 300, reducing the complexity of the third driving component 42 driving the top plate 431.

[0101] In some embodiments, refer to Figure 8 and Figure 9 The third driving component 42 further includes a second drive shaft 422 and a second driving end 423. The second drive shaft 422 is inserted into the support plate 442. The third cam 421 is sleeved on the second drive shaft 422 located inside the second mounting cavity 430. The second driving end 423 is connected to the second drive shaft 422 located outside the second mounting cavity 430. The second driving end 423 drives the second drive shaft 422 to rotate, thereby driving the third cam 421 to rotate. (Refer to...) Figure 9The third cam 421 has a third sleeve hole 4213 fitted onto the second drive shaft 422. The radius of the fifth end 4211 is the distance between the center of the fifth end 4211 and the center of the third sleeve hole 4213, and the radius of the sixth end 4212 is the distance between the center of the sixth end 4212 and the center of the third sleeve hole 4213. Specifically, the fifth end 4211 is the closest point on the contour line of the third cam 421, and the sixth end 4212 is the farthest point on the contour line of the third cam 421. The closest point on the contour line of the third cam 421 refers to the closest position point on the contour of the third cam 421 that contacts the top plate 431 and causes the top plate 431 to move in the expected direction X during rotation. The farthest point on the contour line of the third cam 421 refers to the farthest position point on the contour of the third cam 421 that contacts the top plate 431 and causes the top plate 431 to move in the expected direction X during rotation.

[0102] In some embodiments, refer to Figure 12 The third cam 421 is a constant-width cam, meaning it has two parallel tangents 4210, with a distance of L1 mm between them, and L1 is a constant value. The distance between the opposing surfaces of the top plate 431 and the bottom plate 432 is L2 mm, satisfying L1 = L2. This ensures that the third cam 421 is always in contact with the top plate 431, preventing the top plate 431 from being suspended during movement (i.e., rising or falling) in the first direction X, thus ensuring the stability of the top plate 431 and the sample box 41 during movement in the first direction X. (Refer to...) Figure 12 The connection between the side plate 433 and the top plate 431 forms a first inclined surface 4331, and the connection between the side plate 433 and the bottom plate 432 forms a second inclined surface 4332. The third cam 421 rotates to its sixth end 4212 and abuts against the top plate 431. The third cam 421 is tangent to the first inclined surface 4331, thereby making the top plate 431 stably positioned in the sample oil of the disk electrode 300 immersed in the sample box 41, ensuring the sampling stability and continuity of the disk electrode 300. The third cam 421 rotates to its fifth end 4211 and abuts against the top plate 431. The third cam 421 is tangent to the second inclined surface 4332, thereby making the top plate 431 stably positioned in the position where the disk electrode 300 is separated from the sample box 41, avoiding the situation where the sample oil inside the sample box 41 spills due to the shaking of the top plate 431.

[0103] In some embodiments, the depth to which the disk electrode 300 is immersed in the sample oil in the sample container 41 is 1 / 4 to 1 / 2 of the sample oil depth.

[0104] In some embodiments, the disk electrode 300 is immersed in the sample oil in the sample container 41 to a depth of 1 / 3 of the sample oil depth.

[0105] In some embodiments, refer to Figure 11 and Figure 12The sampling unit 40 also includes a sample stage 411, which is disposed on the side of the top plate 431 away from the bottom plate 432. The sample stage 411 is in the sample box 41, and the sample stage 411 can ensure the installation stability of the sample box 41 on the top plate 431.

[0106] In some embodiments, refer to Figure 1 as well as Figure 13 and Figure 14 The excitation device 100 also includes a grinding unit 50, which includes a grinding element 51 and a sixth driving element 52, as shown in the figure. Figure 1 The grinding element 51 is disposed on one side of the bearing end 311 along the second direction Y. The grinding element 51 is rotatable. The sixth driving element 52 is connected to the grinding element 51 and is used to drive the grinding element 51 to move along the second direction Y. The sixth driving element 52 can drive the grinding element 51 to move along the first direction Y to between the slider 21 and the rotating shaft 31. Specifically, the grinding element 51 is moved to between the sleeve 23 and the bearing end 311 of the rotating shaft 31. The first driving element 12 can drive the rod electrode 200 to move and insert into the grinding element 51. The rotation of the grinding element 51 forms the grinding of the rod electrode 200. The design of the sixth driving component 52 and the grinding component 51 allows the grinding component 51 to be moved between the sleeve 23 and the bearing end 311 of the rotating shaft 31 after the excitation device 100 completes one sampling excitation process. The first driving component 12 moves the rod electrode 200 between the grinding components 51, and the rotation of the grinding component 51 rotates the rod electrode 200, thereby grinding the rod electrode 200 contaminated with sample oil to remove the sample oil contaminated on the rod electrode 200. This ensures the cleanliness of the surface of the rod electrode 200 for subsequent sampling excitation processes and guarantees the detection accuracy of the subsequent arc direct-reading atomic oil spectrometer.

[0107] In some embodiments, refer to Figure 1 , Figure 13 and Figure 4The grinding unit 50 also includes a third mounting base 53, a seventh driving member 54, and an eighth driving member 55. The grinding member 51 and the seventh driving member 54 are spaced apart along the second direction Y. The seventh driving member 54 is connected to the grinding member 51 to drive the grinding member 51 to rotate. The sixth driving member 52 is connected to the third mounting base 53 to drive the third mounting base 53 to move along the second direction Y. The eighth driving member 55 is located on one side of the sixth driving member 52 along the first direction X, and the eighth driving member 55 is connected to the sixth driving member 52 to drive the sixth driving member 52 to move the third mounting base 53 along the first direction X. The design of the third mounting base 53 ensures the assembly stability of the grinding part 51 and the seventh driving part 54. The sixth driving part 52 can form an overall drive for the grinding part 51 and the seventh driving part 54. The seventh driving part 54 can ensure the stable drive for the rotation of the grinding part 51. The design of the eighth driving part 55 can drive the sixth driving part 52, the grinding part 51 set on the third mounting base 53, and the seventh driving part 54 to move together along the first direction X (rising or falling). The cooperation design of the eighth driving part 55 and the sixth driving part 52 can drive the grinding part 51 to move along the second direction Y and the first direction X, thereby avoiding interference between the grinding part 51 and the disk electrode 300 during the grinding of the rod electrode 200 and ensuring the stability of grinding.

[0108] In some embodiments, the sixth driving member 52 is connected to the third mounting base 53 via the first push rod 522, and the first push rod 522 is provided with a first fixing block 521. The eighth driving member 55 is connected to the first fixing block 521 via the second push rod 552, and the second push rod 552 is provided with a second fixing block 551, thereby ensuring the stability of driving the grinding member 51 to move along the second direction Y and the first direction X.

[0109] In some embodiments, refer to Figure 13 and Figure 14The third mounting base 53 has a third mounting cavity 530 inside. The seventh driving member 54 includes a third drive shaft 541, a bushing 542, a coupling 543, a driving wheel 544, and a driven wheel 546. The third drive shaft 541, the driving wheel 544, and the driven wheel 546 are all disposed in the third mounting cavity 530. The output end of the seventh driving member 54 is connected to the third drive shaft 541. The bushing 542 is sleeved on the third drive shaft 541, and the coupling 543 is sleeved on the bushing 542. The coupling 543 is connected to the driving wheel 541. 4. The seventh driving member 54 is connected to the driving wheel 544. The end of the driving wheel 544 away from the coupling 543 is fitted with a first bearing 545, and the driven wheel 546 is fitted with a second bearing 547. Thus, the driving wheel 544 drives the driven wheel 546 to rotate. The grinding part 51 is connected to the driven wheel 546. The seventh driving member 54 drives the third transmission shaft 541 to drive the driving wheel 544 to drive the driven wheel 546 to rotate, thereby driving the grinding part 51 to rotate, forming the grinding of the rod electrode 200 that extends into the grinding part 51.

[0110] In some embodiments, refer to Figure 13 and Figure 14 The grinding unit 50 also includes a third bearing 56, which surrounds the grinding part 51 in the circumferential direction. The design of the third bearing 56 makes the rotation of the grinding part 51 smoother, and also ensures that the graphite powder generated by the grinding rod electrode 200 will not fall into the sample oil in the sample box 41 and cause test errors.

[0111] In some embodiments, refer to Figure 14 The grinding unit 50 also includes a bracket 57, which is located inside the third mounting cavity 530 and is connected to the driven wheel 546. The grinding part 51 is mounted on the bracket 57, and the driven wheel 546 drives the grinding part 51 to rotate through the bracket 57, thereby ensuring the rotational stability of the grinding part 51.

[0112] In some embodiments, the grinding member 51 can grind the end of the rod electrode 200 adjacent to the disk electrode 300 into a cone angle of 165° to 175°.

[0113] In some embodiments, the grinding member 51 can grind the end of the rod electrode 200 adjacent to the disk electrode 300 into a 170° cone angle.

[0114] In some embodiments, the sixth drive member 52 is a cylinder or a hydraulic cylinder, and the sixth drive member 52 is connected to the third mounting base 53 via a piston rod.

[0115] In some embodiments, the seventh drive member 54 is a motor, specifically, the seventh drive member 54 is a rotary motor.

[0116] In some embodiments, refer to Figures 1-4 and Figure 9 The excitation device 100 also includes a mounting plate 60, which includes a first surface 61 and a second surface 62 arranged opposite each other along a third direction Z. The sample injection unit 10, sample delivery unit 20, and sampling unit 40 are spaced apart along a first direction X on the first surface 61. A rotating shaft 31 is inserted into the mounting plate 60, and a bearing end 311 is located on the side of the first surface 61 facing away from the second surface 62 along the third direction Z. The mounting plate 60 ensures the installation stability of the sample injection unit 10, sample delivery unit 20, and sampling unit 40. Specifically, the sample delivery unit 20 is mounted on the first surface 61 of the mounting plate 60 via a first mounting base 24, and the sampling unit 40 is mounted on the first surface 61 of the mounting plate 60 via a fifth mounting base 44. The grinding unit 50 is mounted on the first surface 61 of the mounting plate 60 via a third mounting base 53.

[0117] In some embodiments, the mounting plate 60 is an insulating resin plate to ensure insulation between components in each unit.

[0118] In some embodiments, refer to Figures 1-4 The excitation device 100 also includes a detection unit 70, which is disposed on the mounting plate 60. The detection end of the detection unit 70 is directed along the second direction Y between the disk electrode 300 and the rod electrode 200 to collect the light waves generated during the excitation process and transmit the light wave signal to the arc direct-reading atomic oil spectrometer for detection and analysis.

[0119] In some embodiments, the excitation device 100 further includes a controller (not shown in the figure), and the first drive member 12, the second drive member 22, the third drive member 42, the fourth drive member 13, the fifth drive member 32, the sixth drive member 52 and the seventh drive member 54 are respectively communicatively connected to the controller.

[0120] In some embodiments, the excitation device 100 further includes a housing (not shown in the figure), in which the sample injection unit 10, sample delivery unit 20, rotation unit 30, sampling unit 40, grinding unit 50 and mounting plate 60 are all disposed, and the housing includes a door.

[0121] In some embodiments, refer to Figure 7 A high-voltage line 201 is connected to the rod electrode 200. The end of the high-voltage line 201 away from the rod electrode 200 is grounded, thereby creating a pressure difference between the high-voltage disk electrode 300 and the rod electrode 200 within a preset distance, which in turn generates an electric arc between the disk electrode 300 and the rod electrode 200 to excite the sample oil.

[0122] The excitation device 100 provided in this embodiment is used as follows:

[0123] The sample oil is placed into sample box 41;

[0124] When the chamber door is closed, the activation switch sends an activation signal.

[0125] The second driving member 22 drives the first cam 221 and the second cam 222 to rotate until the second end 2212 abuts against the slider 21. The second cam 222 does not contact the slider 21. The first driving member 12 drives the rod electrode 200 held by the slider 21 to extend along the first direction X until it abuts against the disk electrode 300 carried by the bearing end 311. The first driving member 12 retracts. The second driving member 22 drives the first cam 221 and the second cam 222 to rotate until the fourth end 2222 of the second cam 222 abuts against the slider 21. The first cam 221 does not contact the slider 21. The slider 21 moves along the first direction X to the excitation position, so that the distance H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is at a preset distance.

[0126] The third driving component 42 drives the third cam 421 to rotate until the sixth end 4212 abuts against the top plate 431, and the disk electrode 300 supported on the bearing end 311 of the rotating shaft 31 is immersed in the sample oil of the sample box 41 for sampling.

[0127] High voltage is supplied to the rotating shaft 31 through the guide 33, so that the disk electrode 300 has high voltage. Through the grounding treatment of the high voltage line 201, a pressure difference is formed between the disk electrode 300 and the rod electrode 200. Moreover, the distance H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is at a preset distance, so that an electric arc is generated between the rod electrode 200 and the disk electrode 300.

[0128] The sixth driving component 52 drives the rotating shaft 31 to rotate the disk electrode 300. The disk electrode 300 rotates the contaminated sample oil to the electric arc, and the electric arc ignites the sample oil to excite light waves.

[0129] The detection unit 70 detects and collects the excited light wave, and transmits the detected light wave signal to the arc direct-reading atomic oil spectrometer. The wavelength of the light wave is measured by the arc direct-reading atomic oil spectrometer to determine the type of metal element, and the content of a certain metal element in the sample oil is determined by measuring the intensity of the light wave at a specific wavelength.

[0130] The third driving member 42 drives the third cam 421 to rotate until the fifth end 4211 abuts against the top plate 431, separating the sample box 41 from the disk electrode 300. When the disk electrode 300 is removed from the sample box 41, the sixth driving member 52 stops rotating and stops providing high pressure to the rotating shaft 31 through the guide member 33, completing one sampling excitation process. The second driving member 22 drives the first cam 221 and the second cam 222 to rotate until the third end 2221 of the second cam 222 abuts against the slider 21, and the first cam 221 does not contact the slider 21. The slider 21 is driven to rise to the highest position along the first direction X, so that the distance H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is greater than the preset distance.

[0131] The eighth driving member 55 drives the sixth driving member 52 to rise along the first direction X. The sixth driving member 52 drives the third mounting base 53 to drive the grinding member 51 to extend along the second direction Y, so that the grinding member 51 is located between the sleeve 23 and the bearing end 311 of the rotating shaft 31. The first driving member 12 drives the rod electrode 200 to extend along the first direction X and insert it into the inside of the grinding member 51, gently pressing the rod electrode 200 onto the grinding member 51. The seventh driving member 54 drives the grinding member 51 to rotate, thus grinding the rod electrode 200.

[0132] After grinding is completed, the first drive member 12 retracts, the eighth drive member 55 drives the sixth drive member 52 to descend along the first direction X, so that the rod electrode 200 exits the grinding member 51, and the sixth drive member 52 drives the third mounting base 53 to move along the second direction Y to the side of the grinding member 51 retracted to the bearing end 311.

[0133] The first driving element 12 drives the rod electrode 200 to extend along the first direction X until the distance H between the rod electrode 200 and the disk electrode 300 is at a preset distance, in preparation for the next sampling excitation process.

[0134] The above provides a detailed description of an excitation device provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An excitation device, characterized in that, include: The sample introduction unit (10) includes a storage unit (11) and a first driving unit (12). The storage unit (11) is used to accommodate a rod electrode (200). The first driving unit (12) is disposed on one side of the storage unit (11) along a first direction (X). The first driving unit (12) is used to drive the rod electrode (200) to move along the first direction (X). The sample delivery unit (20) includes a slider (21) and a second drive member (22). The slider (21) is disposed on the side of the storage unit (11) opposite to the first drive member (12) along the first direction (X). The slider (21) is used to hold the rod electrode (200). The second drive member (22) is used to drive the slider (21) to move along the first direction (X). The rotating unit (30) includes a rotating shaft (31), one end of which along its length is a bearing end (311) for carrying a disk electrode (300). The bearing end (311) is located on the side of the slider (21) facing away from the storage device (11) along the first direction (X). The rotating shaft (31) is electrically connected to the disk electrode (300). The rotating shaft (31) can be connected to high voltage and can drive the disk electrode (300) to rotate. The sampling unit (40) includes a sample box (41) and a third drive (42). The sample box (41) is disposed on the side of the bearing end (311) away from the slider (21). The sample box (41) is used to contain sample oil. The third drive (42) can drive the sample box (41) to move along the first direction (X), so that a portion of the disk electrode (300) can be immersed in the sample oil. The second driving member (22) drives the slider (21) to move the clamped rod electrode (200) along the first direction (X), so that the distance between the adjacent end faces of the rod electrode (200) and the disk electrode (300) is at a preset distance. The first driving member (12) can drive the rod electrode (200) to move, so that the distance between the adjacent end faces of the rod electrode (200) and the disk electrode (300) is maintained at the preset distance.

2. The excitation device as described in claim 1, characterized in that, The preset spacing is 2.0mm to 2.6mm.

3. The excitation device as described in claim 1, characterized in that, The sample injection unit (10) also includes a fourth driving element (13); The storage device (11) has a through hole (110) extending through the storage device (11) along the first direction (X). There are multiple through holes (110) arranged at intervals along the circumferential direction of the storage device (11). Each through hole (110) can accommodate one rod electrode (200). The fourth driving member (13) can drive the storage member (11) to rotate, so that the first driving member (12) and a through hole (110) are arranged opposite each other along the first direction (X). The first driving member (12) can push the rod electrode (200) in the through hole (110) to move along the first direction (X), so that the distance between the adjacent end faces of the rod electrode (200) and the disk electrode (300) is maintained at the preset distance.

4. The excitation device as described in claim 3, characterized in that, The rod electrode (200) in the through hole (110) opposite to the first driving member (12) is inserted into the slider (21) as a whole, and the fourth driving member (13) drives the storage member (11) to rotate, so that one of the remaining through holes (110) is opposite to the first driving member (12).

5. The excitation device as described in claim 1, characterized in that, The second driving member (22) is used to drive the slider (21) so that the clamped rod electrode (200) can be in the following states respectively: First state: The rod electrode (200) held by the slider (21) abuts against the disk electrode (300) carried by the bearing end (311); Second state: Along the first direction (X), the distance between the adjacent end faces of the rod electrode (200) held by the slider (21) and the disk electrode (300) carried by the bearing end (311) is at the preset distance; Third state: Along the first direction (X), the distance between the adjacent end faces of the rod electrode (200) held by the slider (21) and the disk electrode (300) carried by the bearing end (311) is greater than the preset distance.

6. The excitation device as described in claim 5, characterized in that, The sample delivery unit (20) also includes a sleeve (23) for inserting the rod electrode (200); The slider (21) has an insertion hole (210) that passes through the slider (21) along the first direction (X). The sleeve (23) is inserted into the insertion hole (210). An elastic part (230) protrudes from the inner wall of the sleeve (23). The elastic part (230) is annular in shape. The inner diameter of the elastic part (230) is smaller than the outer diameter of the rod electrode (200). The sleeve (23) forms an elastic clamping of the rod electrode (200) through the elastic part (230). The first driving member (12) is capable of driving the rod electrode (200) to move within the sleeve (23).

7. The excitation device as described in claim 5, characterized in that, The sample delivery unit (20) further includes a first mounting base (24), a support member (25), and a first elastic member (26); The first mounting base (24) has a first mounting cavity (240) inside, and the first mounting base (24) includes a first side wall (241) and a second side wall (242) disposed opposite to each other along the first direction (X); One end of the slider (21) used to insert the rod electrode (200) is located outside the first mounting cavity (240), and the other end is located inside the first mounting cavity (240); The support member (25) extends along the first direction (X). One end of the support member (25) is slidably connected to the slider (21), and the other end is connected to the second side wall (242). The first elastic member (26) is sleeved on the support member (25). One end of the first elastic member (26) abuts against the second side wall (242), and the other end abuts against the slider (21).

8. The excitation device as described in claim 5, characterized in that, The second drive element (22) includes a first cam (221) and a second cam (222); The first cam (221) and the second cam (222) respectively abut against the end of the slider (21) away from the bearing end (311), and the second driving member (22) can drive the first cam (221) and the second cam (222) to rotate; The first cam (221) is a disc cam, and the first cam (221) includes a first end (2211) and a second end (2212) disposed opposite to each other, and the radius of the first end (2211) is smaller than the radius of the second end (2212); The second cam (222) is a disc cam, and the second cam (222) includes a third end (2221) and a fourth end (2222) arranged opposite to each other. The radius of the third end (2221) is smaller than the radius of the fourth end (2222). The first cam (221) rotates to the second end (2212) abutting against the slider (21). The first driving member (12) drives the rod electrode (200) held by the slider (21) to abut against the disc electrode (300) carried by the bearing end (311). The second cam (222) rotates to the fourth end (2222) and abuts against the slider (21). The distance between the adjacent end faces of the rod electrode (200) held by the slider (21) and the disk electrode (300) carried by the bearing end (311) is at the preset distance. The second cam (222) rotates to the third end (2221) and abuts against the slider (21). The distance between the adjacent end faces of the rod electrode (200) held by the slider (21) and the disk electrode (300) carried by the bearing end (311) is greater than the preset distance. In this configuration, along the first direction (X), the first cam (221) rotates to the second end (2212) and abuts against the slider (21), the distance between the second end (2212) and the bearing end (311) is the first distance, the second cam (222) rotates to the fourth end (2222) and abuts against the slider (21), the distance between the fourth end (2222) and the bearing end (311) is the second distance, the first distance is less than the second distance, and the difference between the second distance and the first distance is within the preset distance.

9. The excitation device as claimed in claim 1, characterized in that, The rotating unit (30) also includes a fifth driving element (32) and a flow guide element (33); The fifth driving member (32) is connected to the end of the rotating shaft (31) away from the bearing end (311) to drive the rotating shaft (31) to rotate; The guide (33) extends along the first direction (X), one end of the guide (33) is connected to the rotating shaft (31), and the other end can be connected to high voltage. The guide (33) is electrically connected to the rotating shaft (31) to introduce high voltage into the rotating shaft (31), thereby making the disk electrode (300) carry high voltage.

10. The excitation device as claimed in claim 9, characterized in that, The rotating unit (30) further includes a clamping member (34), which is disposed between the bearing end (311) and the fifth driving member (32). The clamping member (34) is connected to the guide member (33), and the clamping member (34) can squeeze the guide member (33) so that the guide member (33) can maintain a conductive connection with the rotating shaft (31) during the rotation of the rotating shaft (31).

11. The excitation device as claimed in claim 1, characterized in that, The sampling unit (40) also includes a second mounting base (43); The second mounting base (43) includes a top plate (431), a bottom plate (432), and a side plate (433). The top plate (431) and the bottom plate (432) are arranged opposite to each other along the first direction (X). One end of the side plate (433) along the first direction (X) is connected to the top plate (431), and the other end is connected to the bottom plate (432) to define a second mounting cavity (430). The sample box (41) is disposed on the side of the top plate (431) facing away from the bottom plate (432). The output end of the third driving member (42) is connected to the second mounting base (43) to drive the second mounting base (43) to move along the first direction (X).

12. The excitation device as claimed in claim 11, characterized in that, The third driving member (42) includes a third cam (421), which is the output end of the third driving member (42). The third cam (421) is disposed inside the second mounting cavity (430). The third driving member (42) can drive the third cam (421) to rotate, thereby driving the second mounting seat (43) to move along the first direction (X). The third cam (421) is a disc cam, and the third cam (421) includes a fifth end (4211) and a sixth end (4212) arranged opposite to each other. The radius of the fifth end (4211) is smaller than the radius of the sixth end (4212). The third cam (421) rotates to the sixth end (4212) and abuts against the top plate (431), allowing part of the disk electrode (300) to be immersed in the sample oil in the sample box (41); The third cam (421) rotates to the fifth end (4211) and abuts against the top plate (431), and the disk electrode (300) separates from the sample box (41).

13. The excitation device as claimed in claim 12, characterized in that, The third cam (421) is a cam of equal width. The third cam (421) has two parallel tangents (4210). The distance between the two tangents (4210) is L1 mm. The distance between the opposite surfaces of the top plate (431) and the bottom plate (432) is L2 mm, satisfying: L1=L2; The connection between the side plate (433) and the top plate (431) forms a first inclined surface (4331), and the connection between the side plate (433) and the bottom plate (432) forms a second inclined surface (4332). The third cam (421) rotates to the sixth end (4212) and abuts against the top plate (431), and the third cam (421) is tangent to the first inclined surface (4331); The third cam (421) rotates to the fifth end (4211) and abuts against the top plate (431), and the third cam (421) is tangent to the second inclined surface (4332).

14. The excitation device as claimed in claim 1, characterized in that, The excitation device further includes a grinding unit (50), which includes a grinding element (51) and a sixth driving element (52). The grinding element (51) is disposed on one side of the bearing end (311) along the second direction (Y). The grinding element (51) is rotatable, and the sixth drive element (52) is used to drive the grinding element (51) to move along the second direction (Y); The sixth driving member (52) can drive the grinding member (51) to move along the second direction (Y) to between the slider (21) and the rotating shaft (31), and the first driving member (12) can drive the rod electrode (200) to move and insert into the grinding member (51), and the rotation of the grinding member (51) forms the grinding of the rod electrode (200); The first direction (X) intersects with the second direction (Y).

15. The excitation device as claimed in claim 14, characterized in that, The grinding unit (50) also includes a third mounting base (53), a seventh drive unit (54), and an eighth drive unit (55); The grinding member (51) and the seventh driving member (54) are spaced apart on the third mounting base (53) along the second direction (Y), and the seventh driving member (54) is connected to the grinding member (51) to drive the grinding member (51) to rotate; The sixth driving member (52) is connected to the third mounting base (53) to drive the third mounting base (53) to move along the second direction (Y); The eighth drive member (55) is connected to the sixth drive member (52) to drive the sixth drive member (52) to move the third mounting base (53) along the first direction (X).

16. The excitation device as claimed in claim 1, characterized in that, The excitation device further includes a mounting plate (60), which includes a first surface (61) and a second surface (62) disposed opposite each other along a third direction (Z). The sample injection unit (10), the sample delivery unit (20) and the sampling unit (40) are disposed at intervals on the first surface (61) along the first direction (X). The rotating shaft (31) is inserted into the mounting plate (60), and the bearing end (311) is located on the side of the first surface (61) facing away from the second surface (62) along the third direction (Z); The third direction (Z) intersects with the first direction (X).

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