Excitation device

Abstract

The embodiment of the invention discloses an excitation device, and belongs to the technical field of oil detection. The excitation device is provided with a sample introduction unit, a sample sending unit, a rotating unit and a sampling unit, and a second driving piece is arranged in the sample sending unit, so that the in-place accuracy of a rod electrode is high, and an electric arc can be stably generated between the rod electrode and a disc electrode; through arrangement of a third driving part in the sampling unit, a disc electrode can be stably immersed in sample oil liquid, the sampling stability is guaranteed, after one-time sampling excitation is completed, through arrangement of a first driving part in the sample feeding unit, the distance between a rod electrode and the disc electrode is kept at a preset distance, the rod electrode does not need to be replaced, and the sampling efficiency is improved. The distance between the rod electrode and the disc electrode does not need to be manually adjusted, the next sampling excitation can be quickly carried out through driving of the first driving piece, the excitation efficiency is improved, the detection efficiency of the electric arc direct-reading atomic oil spectrometer is further improved, manual operation is not needed in the whole process, the automation degree is high, and the use safety is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of oil detection, and in particular to an excitation device. Background Art

[0002] The arc direct-reading atomic oil spectrometer is a type of atomic spectrometer. The principle is to generate an arc through the cooperation of a rod electrode and a disk electrode to ignite the sample oil, so that the electrons of the metal elements in the sample oil are excited and transition to an excited state. When the electrons return to the ground state, the metal atoms emit light of a unique wavelength. The type of metal element is determined by measuring the wavelength of the light wave, and the content of a certain metal element in the sample oil is determined by measuring the intensity of the light wave of a specific wavelength. However, the existing device for exciting the sample oil needs to remove the rod electrode and replace it with a new rod electrode after completing an ignition excitation, and then manually move the replaced rod electrode so that the rod electrode and the disk electrode are at a distance that can generate an arc before excitation. The entire excitation process is cumbersome and complex, and inefficient, which affects the detection efficiency of the arc direct-reading atomic oil spectrometer. Summary of the invention

[0003] The embodiment of the present application provides an excitation device, which can solve the problem that the excitation process of the existing arc direct-reading atomic oil spectrometer excitation device is complicated and cumbersome, resulting in low excitation efficiency and low detection efficiency.

[0004] The embodiment of the present application provides an excitation device, comprising: a sample feeding unit, comprising a storage element and a first driving element, wherein the storage element is used to accommodate a rod electrode, the first driving element is arranged at a side of the storage element along a first direction, and the first driving element is used to drive the rod electrode to move along the first direction; a sample feeding unit, comprising a slider and a second driving element, the slider is arranged at a side of the storage element away from the first driving element along the first direction, the slider is used to clamp the rod electrode, and the second driving element is used to drive the slider to move along the first direction; a rotating unit, comprising a rotating shaft, one end of the rotating shaft along the length direction of the rotating shaft is a bearing end for bearing a disk electrode, the bearing end is arranged at a side of the slider away from the storage element along the first direction, and the rotating shaft is used to carry a disk electrode. The shaft is conductively connected to the disk electrode, the rotating shaft can be connected to high voltage, and the rotating shaft can drive the disk electrode to rotate; the sampling unit includes a sample box and a third driving member, the sample box is arranged on the side of the bearing end away from the slider, the sample box is used to contain sample oil, and the third driving member can drive the sample box to move along the first direction so that part of the disk electrode can be immersed in the sample oil; the second driving member drives the slider to drive the clamped rod electrode to move 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, and 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 2.0 mm to 2.6 mm.

[0006] Optionally, the injection unit also includes a fourth driving member; a through hole is opened on the storage member and passes through the storage member along the first direction, and the number of the through holes is multiple and arranged at intervals along the circumferential direction of the storage member, and each of the through holes can accommodate one of the rod electrodes; the fourth driving member can drive the storage member to rotate, so 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 spacing between the adjacent end faces of the rod electrode and the disk electrode is maintained at the preset spacing.

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

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

[0009] First state: the rod electrode clamped by the slider abuts against the disk electrode carried by the carrying end;

[0010] Second state: along the first direction, the distance between the rod electrode clamped by the slider and the adjacent end faces of the disk electrode carried by the carrying end is within the preset distance;

[0011] The third state: along the first direction, the distance between the adjacent end surfaces of the rod electrode clamped by the slider and the disk electrode carried by the carrying end is greater than the preset distance.

[0012] Optionally, the sample delivery unit also includes a sleeve for inserting the rod electrode; the slider is provided with a socket that passes through the slider along the first direction, the sleeve is inserted into the socket, an elastic part is protruding from the inner wall of the sleeve, the elastic part is annular in shape, the inner diameter of the elastic part is smaller than the outer diameter of the rod electrode, and the sleeve forms an elastic clamp for 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 also includes a first mounting seat, a support member and a first elastic member; a first mounting seat is provided with a first mounting cavity inside, and the first mounting seat includes a first side wall and a second side wall arranged 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 side wall, the first elastic member is sleeved on the support member, one end of the first elastic member abuts against the second side wall, 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 are respectively abutted against an end of the slider away from the load-bearing end, and the second driving member can drive the first cam and the second cam to rotate; the first cam is a disc-shaped cam, the first cam includes a first end and a second end arranged opposite to each other, and the radius of the first end is smaller than the radius of the second end; the second cam is a disc-shaped cam, the second cam includes a third end and a fourth end arranged opposite to each other, and the radius of the third end is smaller than the radius of the fourth end; the first cam rotates to the second end to abut against the slider, and the first driving member drives the rod electrode clamped by the slider to abut against the disk electrode carried by the load-bearing end; the second cam rotates to the fourth The first end of the first cam abuts against the slider, and the spacing between the adjacent end faces of the rod electrode clamped by the slider and the disk electrode carried by the bearing end is within the preset spacing; the second cam rotates to the third end and abuts against the slider, and the spacing between the adjacent end faces of the rod electrode clamped by the slider and the disk electrode carried by the bearing end is greater than the preset spacing; wherein, along the first direction, the first cam rotates to the second end and abuts against the slider, and the spacing between the second end and the bearing end is the first spacing, the second cam rotates to the fourth end and abuts against the slider, and the spacing between the fourth end and the bearing end is the second spacing, the first spacing is smaller than the second spacing, and the difference between the second spacing and the first spacing is within the preset spacing.

[0015] Optionally, the rotating unit also includes a fifth driving member and a guide member; 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 guide member extends along the first direction, one end of the guide member is connected to the rotating shaft, and the other end can be connected to high voltage, and the guide member is conductively connected to the rotating shaft to introduce high voltage into the rotating shaft, so that the disk electrode carries high voltage.

[0016] Optionally, the rotating unit also includes a clamping member, which is arranged between the bearing end and the fifth driving member, and is connected to the guide member. The clamping member 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 also includes a second mounting seat; the second mounting seat includes a top plate, a bottom plate and a side plate, the top plate and the bottom plate are arranged opposite to each other along the first direction, one end of the side plate along the first direction is connected to the top plate, and the other end is connected to the bottom plate to define a second mounting cavity, and the sample box is arranged on a side of the top plate away from the bottom plate; the output end of the third driving member is connected to the second mounting seat to drive the second mounting seat 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, and the second cam is arranged on the inner side of the second mounting cavity, and the third driving member can drive the second cam to rotate to drive the second mounting seat to move along the first direction; the second cam is a disk-shaped cam, and the second cam includes a third end and a fourth end that are relatively arranged, and the radius of the third end is smaller than the radius of the fourth end; the second cam rotates to the fourth end to abut against the top plate, and part of the disk electrode can be immersed in the sample oil in the sample box; the second cam rotates to the third end to abut against the top plate, and the disk electrode is separated from the sample box.

[0019] Optionally, the second cam is an equal-width cam, and the second cam has two parallel tangents, the spacing between the two tangents is L1 mm, and the spacing between the opposite surfaces of the top plate and the bottom plate is L2 mm, satisfying: L1=L2; the connection between the side plate and the top plate forms a first inclined surface, and the connection between the side plate and the bottom plate forms a second inclined surface; the second cam rotates to the fourth end to abut against the top plate, and the second cam is tangent to the first inclined surface; the second cam rotates to the third end to abut against the top plate, and the second cam is tangent to the second inclined surface.

[0020] Optionally, the excitation device also includes a grinding unit, the grinding unit includes a grinding piece and a sixth driving piece, the grinding piece is arranged on one side of the bearing end along the second direction; the grinding piece is capable of rotating, and the sixth driving piece is used to drive the grinding piece to move along the second direction; the sixth driving piece is capable of driving the grinding piece to move along the second direction to between the slider and the rotating shaft, and the first driving piece is capable of driving the rod electrode to move and insert the grinding piece, and the grinding of the rod electrode is formed by the rotation of the grinding piece; the first direction intersects with the second direction.

[0021] Optionally, the grinding unit also includes a third mounting seat, a seventh driving member and an eighth driving member; the grinding member and the seventh driving member are arranged on the third mounting seat at intervals along the second direction, and 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 seat to drive the third mounting seat to move along the second direction; the eighth driving member is connected to the sixth driving member to drive the sixth driving member to drive the third mounting seat to move along the first direction.

[0022] Optionally, the excitation device also includes a mounting plate, the mounting plate includes a first surface and a second surface arranged opposite to each other along a third direction, the sample injection unit, the sample delivery unit and the sampling unit are arranged on the first surface at intervals along the first direction; the rotating shaft is inserted into the mounting plate, and the bearing end is arranged 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 the present application is that an excitation device is provided, wherein the excitation device is provided by setting a sample feeding unit, wherein a storage element in the sample feeding unit is used to accommodate a rod electrode, a first driving element is used to drive the rod electrode to move along a first direction, a sample feeding unit is provided, a slider in the sample feeding unit is used to clamp the rod electrode, a second driving element is used to drive the slider to move along the first direction, a rotating shaft in the rotating unit is used to carry a disk electrode, and the rotating shaft can drive the disk electrode to rotate, a sample box in the sampling unit is used to accommodate sample oil, and a third driving element can drive the sample box to move along the first direction. When in use, the second driving element drives the slider and the clamped rod electrode to approach the bearing end of the rotating shaft in 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, so that an arc is generated between the disk electrode and the rod electrode by the high voltage passed through the rotating shaft, and the third driving element drives the sample box to approach the bearing end of the rotating shaft in the first direction, so that the disk electrode is immersed in the sample oil of the sample box, and the sample oil is rotated to the arc by the rotation of the disk electrode. The electric arc ignites the sample oil to excite light waves, so that the arc direct-reading atomic oil spectrometer collects and analyzes corresponding detection data to complete a sampling excitation. The setting of the second driving member makes the rod electrode in place with high accuracy and can stably generate an arc between the rod electrode and the disk electrode. The setting of the third driving member enables the disk electrode to be stably immersed in the sample oil to ensure the stability of sampling. After completing a sampling excitation, the rod electrode becomes shorter due to combustion and consumption, resulting in the distance between the rod electrode and the disk electrode exceeding the preset distance and making it difficult to generate an arc. The first driving member can drive the rod electrode to move in the first direction so that the distance between the end faces of the adjacent ends of the rod electrode and the disk electrode is maintained at the preset distance, thereby eliminating the need to replace the rod electrode or manually adjust the distance between the rod electrode and the disk electrode. The next sampling excitation can be quickly performed by driving the first driving member, thereby improving the excitation efficiency and thereby improving the detection efficiency of the arc direct-reading atomic oil spectrometer. Moreover, no manual operation is required throughout the process, and the degree of automation is high, ensuring safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a schematic diagram of the structure of the excitation device provided in the embodiment of the present application;

[0026] Figure 2 is a structural schematic diagram of a rod motor and a disk electrode in a first state in an excitation device provided in an embodiment of the present application;

[0027] Figure 3 is a schematic structural diagram of a rod motor and a disk electrode in a second state in an excitation device provided in an embodiment of the present application;

[0028] Figure 4 is a schematic structural diagram of a rod motor and a disk electrode in a third state in an excitation device provided in an embodiment of the present application;

[0029] Figure 5 is a schematic diagram of the structure of the sample injection unit in the excitation device provided in the embodiment of the present application;

[0030] Figure 6 yes Figure 5 AA section view;

[0031] Figure 7 It is a structural schematic diagram of a sample delivery unit in an excitation device provided in an embodiment of the present application;

[0032] Figure 8 It is a schematic diagram of the combined structure of the sleeve and the rod motor in the excitation device provided in the embodiment of the present application;

[0033] Fig. 9 It is a schematic diagram of the combined structure of the rotating unit and the mounting plate in the excitation device provided in the embodiment of the present application;

[0034] Fig.10 yes Fig. 9 A schematic diagram of the enlarged structure at B;

[0035] Fig.11 is a schematic diagram of the structure of a sampling unit in an excitation device provided in an embodiment of the present application;

[0036] Fig.12 yes Fig.11 CC section view;

[0037] Fig.13 is a schematic structural diagram of a grinding unit in an excitation device provided in an embodiment of the present application;

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

[0039] Description of reference numerals:

[0040] 100. Excitation device;

[0041] 10. injection unit, 11. storage element, 110. through hole, 12. first driving element, 13. fourth driving element, 14. housing;

[0042] 20. Sample delivery unit, 21. Slider, 210. Socket, 22. Second driving member, 221. First cam, 2210. First set of holes, 2211. First end, 2212. Second end, 222. Second cam, 2220. Second set of holes, 2221. Third end, 2222. Fourth end, 223. First transmission shaft, 224. First driving end, 23. Sleeve, 230. Elastic part, 24. First mounting seat, 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. Load-bearing end, 32. Fifth driving member, 33. Guide member, 331. Protruding portion, 34. Pressing member, 341. Pressing seat, 342. Connecting seat, 3420. Accommodating cavity, 343. Second elastic member, 35. Fourth mounting seat, 350. Fourth mounting cavity;

[0044] 40. sampling unit, 41. sample box, 411. sample stage, 42. third driving member, 421. third cam, 4210. tangent, 4211. fifth end, 4212. sixth end, 4213. third set of holes, 422. second transmission shaft, 423. second driving end, 43. second mounting seat, 430. second mounting cavity, 431. top plate, 432. bottom plate, 433. side plate, 4331. first inclined surface, 4332. second inclined surface, 44. fifth mounting seat, 441. base, 442. support plate; 45. guide column;

[0045] 50. grinding unit, 51. grinding member, 52. sixth driving member, 521. first fixing block, 522. first push rod, 53. third mounting seat, 530. third mounting cavity, 54. seventh driving member, 541. third transmission shaft, 542. bushing, 543. coupling, 544. driving wheel, 545. first bearing, 546. driven wheel, 547. second bearing, 55. eighth driving member, 551. second fixing 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 line;

[0049] 300, disk electrode;

[0050] X, first direction, Y, second direction, Z, third direction. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0052] In some embodiments of the present application, an excitation device 100 is provided, referring to Figures 1 to 12 The excitation device 100 includes: a sample injection unit 10, a sample delivery unit 20, a rotation unit 30 and a sampling unit 40. The excitation device 100 has a first direction X, a second direction Y and a third direction Z that intersect each other. Figures 1 to 11 In the illustrated embodiment, the first direction X, the second direction Y and the third direction Z are orthogonal to each other.

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

[0054] Reference Figure 1 and Figure 5 The injection unit 10 includes a storage element 11 and a first driving element 12, referring to Figure 6 , the storage element 11 is used to accommodate the rod electrode 200, referring to 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 Figure 1 to Figure 4 as well as Figure 7 The sample delivery unit 20 includes a slider 21 and a second driving member 22. Figure 1 The slider 21 is disposed on the side of the storage element 11 away from the first driving element 12 along the first direction X. The slider 21 is used to clamp the rod electrode 200. Figure 2 to Figure 4 as well as Figure 7One end of the rod electrode 200 away from the first driving member 12 along the first direction X extends out of the slider 21 , and the second driving member 22 can drive the slider 21 to move along the first direction X.

[0056] Reference Figure 1 to Figure 4 and Fig. 9 The rotating unit 30 includes a rotating shaft 31, one end of the rotating shaft 31 along the length direction is a bearing end 311 for bearing the disk electrode 300, and the bearing end 311 is arranged on the side of the slider 21 away from the storage element 11 along the first direction X. The rotating shaft 31 is conductively connected to the disk electrode 300, the rotating shaft 31 can be connected to high voltage, and the rotating shaft 31 can drive the disk electrode 300 to rotate.

[0057] Reference Figure 1 to Figure 4 as well as Figure 11-12 The sampling unit 40 includes a sample box 41 and a third driving member 42. The sample box 41 is arranged on the side of the supporting 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] The second driving member 22 can drive the slider 21 to move, so that the slider 21 drives the distance between the adjacent end surfaces of the rod electrode 200 and the disk electrode 300 to be at a preset distance, and the first driving member 12 can drive the rod electrode 200 to move, so that the distance between the adjacent end surfaces of the rod electrode 200 and the disk electrode 300 is maintained at the preset distance. Figure 1 In the illustrated embodiment, the spacing between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is H mm, and the second driving member 22 can drive the slider 21 to drive the clamped rod electrode 200 to approach the disk electrode 300 along the first direction X, so that the spacing H between the end face of the rod electrode 200 adjacent to one end of the disk electrode 300 along the first direction X and the end face of the disk electrode 300 adjacent to one end of the rod electrode 200 along the first direction X is at a preset spacing, and when H exceeds the preset spacing, 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 spacing.

[0059] The arc direct-reading atomic oil spectrometer is a type of atomic spectrometer. The principle is to generate an arc through the cooperation of a rod electrode and a disk electrode to ignite the sample oil, so that the electrons of the metal elements in the sample oil are excited and transition to an excited state. When the electrons return to the ground state, the metal atoms emit light of a unique wavelength. The type of metal element is determined by measuring the wavelength of the light wave, and the content of a certain metal element in the sample oil is determined by measuring the intensity of the light wave of a specific wavelength. However, the existing device for exciting the sample oil needs to remove the rod electrode and replace it with a new rod electrode after completing an ignition excitation, and then manually move the replaced rod electrode so that the rod electrode and the disk electrode are at a distance that can generate an arc before excitation. The entire excitation process is cumbersome and complex, and inefficient, which affects the detection efficiency of the arc direct-reading atomic oil spectrometer.

[0060] The excitation device 100 provided in the embodiment of the present application is provided with a sample feeding unit 10, a sample delivery unit 20, a rotation unit 30 and a sampling unit 40 which are sequentially arranged in a first direction X. The storage unit 11 in the sample feeding unit 10 accommodates the rod electrode 200, the first driving member 12 drives the rod electrode 200 to move along the first direction X, the slider 21 in the sample delivery unit 20 clamps the rod electrode 200, the slider 21 is driven to move along the first direction X by the second driving member 22, the disk electrode 300 is carried by the rotating shaft 31 in the rotating unit 30, the rotating shaft 31 can drive the disk electrode 300 to rotate, and the rotating shaft 31 can provide high voltage to the disk electrode 300, and the sample in the sampling unit 40 is connected to the sample feeding unit 10. The sample box 41 contains the sample oil, and the sample box 41 is driven to move along the first direction X by the third driving member 42. When in use, the slider 21 is driven by the second driving member 22, that is, the clamped rod electrode 200 is close to the bearing end 311 of the rotating shaft 31 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 at a preset distance. The high voltage is passed through the rotating shaft 31, and the high voltage is transmitted to the disk electrode 300 through the rotating shaft 31. The distance H between the disk electrode 300 with the high voltage and the rod electrode 200 is at a preset distance, so that an arc is generated between the two. The third driving member 42 drives the sample box 41 to approach the bearing end 311 along the first direction X, so that the disk electrode 300 is immersed in the sample oil of the sample box 41, so that the disk electrode is contaminated with and carries the sample oil. The sample oil is rotated to the arc by the rotation of the disk electrode 300, and the arc ignites the sample oil, so that the electrons of the metal elements in the sample oil are excited to transition to an excited state. When the electrons return to the ground state, the metal atoms emit light of a specific wavelength. The type of metal element in the sample oil is determined by measuring the wavelength of the light wave through the arc direct-reading atomic oil spectrometer, and the content of a certain metal element in the sample oil is determined by measuring the intensity of the light wave of a specific wavelength, so that the excitation device 100 completes a sampling excitation. In the excitation process, the rod electrode is burned due to the combustion of the sample oil. 200 is burned and consumed, resulting in the shortening of the overall length of the rod electrode 200, thereby causing 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 at the preset distance again, thereby making the distance H between the rod electrode 200 and the disk electrode 300 remain at the preset distance, thereby 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, thereby improving the excitation efficiency, and thereby improving the detection efficiency of the arc direct-reading atomic oil spectrometer.

[0061] The excitation device 100 provided in the embodiment of the present application has a high degree of automation, which reduces the risk of workers operating under high voltage and the tedious operations of repeated grinding and replacement of rod electrodes. There is no need to manually adjust the preset spacing 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] Through the design of the cooperation between the second driving member 22 and the slider 21, the accuracy of the rod electrode 200 can be guaranteed, so that the spacing H between the rod electrode 200 and the disk electrode 300 is accurately at the preset spacing, and the stability of the arc generation can be guaranteed. Through the design of the cooperation between the third driving member 42 and the sample box 41, the accuracy of the sample box 41 can be guaranteed, so that the disk electrode 300 can be accurately immersed in the sample oil, and the sampling stability of the sample oil can be guaranteed, thereby ensuring the stability of the ignition of the sample oil, ensuring the stability of the continuous combustion of the sample oil at the arc, and ensuring the stability of the data collected by the arc direct-reading atomic oil spectrometer and the accuracy of subsequent detection. Through the setting of the first driving member 12, after completing a sampling excitation, the rod electrode 200 can be quickly and accurately pushed to the position where H is at the preset spacing, so that the next sampling excitation can be quickly carried out, improving the use efficiency of the excitation device 100, and thereby 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 of 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 in a range of values ​​consisting of any two values. When the preset spacing is within the above range, it can ensure that an arc is stably generated between the rod electrode 200 and the disk electrode 300, thereby ensuring the stability of the combustion excitation of the sample oil.

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

[0066] In some embodiments, reference Figure 5 The injection unit 10 further includes a fourth driving member 13, referring to Figure 6The storage element 11 is provided with a through hole 110 that penetrates the storage element 11 along the first direction X. There are multiple through holes 110, and the multiple through holes 110 are arranged at intervals along the circumferential direction of the storage element 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 element 11, and the fourth driving member 13 can drive the storage element 11 to rotate, so that the first driving member 12 is arranged 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 spacing H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is maintained at a preset spacing. Specifically, in some implementations, the fourth driving member 13 is a rotating motor, the first driving member 12 is a cylinder, and the output end of the fourth driving member 13 is connected to an end of the storage member 11 that is away from the first driving member 12 along the first direction X to drive the storage member 11 to rotate, so that a through hole 110 and the output end of the first driving member 12 (i.e., a piston rod or a push rod) are arranged opposite to each other along the first direction X, and the output end of the first driving member 12 extends, i.e., pushes the rod electrode 200 in the corresponding through hole 110 to extend along the first direction X, so that the spacing H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is maintained at a preset spacing.

[0067] In some embodiments, the rod electrode 200 in the through hole 110 disposed 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 disposed opposite to the first driving member 12 . Specifically, after the excitation device 100 completes a sampling excitation process, the rod electrode 200 is consumed due to combustion, resulting in a shortened length, which in turn causes the spacing H between the rod electrode 200 and the disk electrode 300 to exceed the preset spacing, so that the first driving member 12 is required to drive the rod electrode 200 to extend so that H is maintained at the preset spacing to ensure smooth sampling excitation. When the rod electrode 200 in the corresponding through hole 110 enters the slider 21 as a whole under the drive of the first driving member 12, 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 remaining multiple through holes 110 with the rod electrode 200 inserted corresponds to the first driving member 12, so that the first driving member 12 can continuously replenish the rod electrode 200 to the slider 21, thereby ensuring the continuous 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 the rod electrode 200 in the corresponding through hole 110 each time is the same as the length consumed by the rod electrode 200 to complete one excitation action, so that the spacing H between the rod electrode 200 and the disk electrode 300 is stably maintained at a preset spacing.

[0069] In some embodiments, reference Figure 6 , the number of through holes 110 is 10, the angle between two adjacent through holes 110 is 36°, and the rod electrode 200 in one through hole 110 enters the slider 21 as a whole, that is, when there is no rod electrode 200 in one through hole 110, the fourth driving member 13 drives the storage member 11 to rotate 36°, so that an adjacent through hole 110 is arranged opposite to the first driving member 12 along the first direction X, so that the first driving member 12 drives the rod electrode 200 to feed. In some other implementations, the number of through holes 110 can be adjusted according to actual use requirements, and the fourth driving member 13 drives the storage member 11 to rotate the angle between two adjacent through holes 110 each time.

[0070] In some embodiments, reference Figure 2 and Figure 3 The injection unit 10 also includes a housing 14, referring to Figure 5 and Figure 6 The shell 14 surrounds the storage element 11 along the circumferential direction of the storage element 11 , and the shell 14 forms a protection for the storage element 11 .

[0071] In some embodiments, reference Figure 2 to Figure 4 as well as Figure 7-Figure 8 The sample delivery unit 20 also includes a sleeve 23 for inserting the rod electrode 200, referring to Figure 7 The slider 21 is provided with a plug hole 210 that passes through the slider 21 along the first direction X, and the sleeve 23 is inserted into the plug hole 210. Figure 8 , an elastic part 230 is protrudingly provided on the inner wall of the sleeve 23, and the shape of the elastic part 230 is annular, and 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 clamp for the rod electrode 200 through the elastic part 230, and the first driving member 12 can drive the rod electrode 200 to move in the sleeve 23. Specifically, the structural design that the inner diameter of the elastic part 230 is smaller than the outer diameter of the rod electrode 200 enables the elastic part 230 to form an elastic clamp for the rod electrode 200 when the rod electrode 200 is inserted into the sleeve 23, and then when the slider 21 drives the sleeve 23 and the clamped rod electrode 200 to move along the first direction X, the rod electrode 200 can be stably set in the sleeve 23, avoiding the displacement of the rod electrode 200, thereby ensuring the smooth progress of the sampling and 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 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, reference Figure 2 , Figure 4 and Figure 7The sample delivery unit 20 further includes a first mounting seat 24, a support member 25 and a first elastic member 26. The first mounting seat 24 is provided with a first mounting cavity 240. Figure 4 In the embodiment shown, the first mounting seat 24 is in the shape of a frame, and the first mounting seat 24 includes a first side wall 241 and a second side wall 242 arranged opposite to each other along the first direction X. The slider 21 is partially arranged in the first mounting cavity 240. Specifically, one end of the slider 21 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. Figure 1 to Figure 4 as well as Figure 7 The output end of the second driving member 22 is connected to the slider 21 to drive the slider 21 to move along the first direction X. 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 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. 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 is docked with the through hole 110 corresponding to the first driving member 12 on the storage member 11. The slider 21 clamps the rod electrode 200 in the docked through hole 110 through the sleeve 23, and makes the end of the rod electrode 200 away from the first driving member 12 along the first direction X extend out of the sleeve 23. The matching design of the support member 25 and the first elastic member 26, when the second driving member 22 drives the slider 21 to drive the sleeve 23 and the clamped rod electrode 200 to approach the disk electrode 300 along the first direction X, the slider 21 is relative to the support member 2 5 moves and squeezes the first elastic member 26, and the first elastic member 26 can form a buffer and limit for the slider 21, so as to ensure the stability of the slider 21 moving along the first direction X, thereby keeping the distance H between the rod electrode 200 and the disk electrode 300 at a preset distance. After the excitation device 100 completes a 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 member 26, so as to terminate the arc between the rod electrode 200 and the disk electrode 300 in time, so as to smoothly carry out the next sampling excitation process.

[0073] Among them, specifically Figure 1 to Figure 4 as well as Figure 7 In the illustrated embodiment, along the third direction Z, one end of the slider 21 where the sleeve 23 is arranged is located outside the first mounting cavity 240, and the end of the slider 21 away from the sleeve 23 is located inside the first mounting cavity 240, so that when the slider 21 moves along the first direction X, the first mounting seat 24 is prevented from interfering with the sleeve 23, thereby ensuring smooth movement of the sleeve 23 and the clamped rod electrode 200.

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

[0075] In some embodiments, reference Figure 2 to Figure 4 The second driving member 22 is used to drive the slider 21 to drive the clamped rod electrode 200 to be in the following states:

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

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

[0078] The third state: along the first direction X, the distance between the adjacent end surfaces of the rod electrode 200 clamped by the slider 21 and the disk electrode 300 carried by the carrying end 311 is greater than the preset distance.

[0079] In some embodiments, the second driving member 22 is a cam mechanism, see Figure 2 to Figure 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. Figure 2 to Figure 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 seat 24 along the first direction X. The first cam 221 and the second cam 222 are respectively abutted against one 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 are respectively abutted against one end of the slider 21 adjacent to the first side wall 241 along the first direction X, and the second driving member 22 can drive the first cam 221 and the second cam 222 to rotate. Figure 2 to Figure 4 as well as Figure 7 The first cam 221 is a disc-shaped cam, and the first cam 221 includes a first end 2211 and a second end 2212 that are relatively set, 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-shaped cam, and the second cam 222 includes a third end 2221 and a fourth end 2222 that are relatively set, and 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 slider 21 and the clamped rod electrode 200 and the adjacent end surfaces of the disk electrode 300 carried by the carrying end 311 can be in the following states respectively:

[0081] First state: the first cam 221 rotates to the second end 2212 to abut against the slider 21, the slider 21 descends to the lowest position along the first direction X, and the first driving member 12 drives the rod electrode 200 clamped by the slider 21 to abut against the disk electrode 300 carried by the carrying 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 exciting position, and the distance H between the adjacent end surfaces of the rod electrode 200 clamped by the slider 21 and the disk electrode 300 carried by the carrying end 311 is at a preset distance;

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

[0084] The second driving member 22 adopts the design of a cam mechanism, and the second driving member 22 adopts a double cam structure design in which a first cam 221 and a second cam 222 cooperate. In combination with the preset spacing between the second end 2212 with a relatively large radius in the first cam 221 and the fourth end 2222 with a relatively large radius in the second cam 222, the slider 21 and the rod electrode 200 clamped by the sleeve 23 can move to the corresponding designated position along the first direction X. Through the sequential rotation cooperation 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, thereby ensuring the accuracy of the rod electrode 200 being in position adjacent to the disk electrode 300 along the first direction X, facilitating the sampling and excitation process of the excitation device 100 and facilitating subsequent processing after a 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 driving 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 surfaces of the rod electrode 200 and the disk electrode 300.

[0086] Among them, refer to Figure 2, along the first direction X, the first cam 221 rotates to the second end 2212 and abuts against the slider 21, the spacing between the second end 2212 and the bearing end 311 is the first spacing (not shown in the figure), the second cam 222 rotates to the fourth end 2222 and abuts against the slider 21, the spacing between the fourth end 2222 and the bearing end 311 is the second spacing (not shown in the figure), the first spacing is smaller than the second spacing, and the difference between the second spacing and the first spacing is within the preset spacing. Therefore, when switching from the first state to the second state, it is ensured that the spacing H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 can be stably within the preset spacing, ensuring the stability of arc generation when the excitation device 100 is in the excitation process, and ensuring the accuracy of subsequent detection.

[0087] Specifically, the first state is: the second end 2212 with a relatively large radius of the first cam 221 abuts against the slider 21. During the process of the first cam 221 rotating from the first end 2211 with a relatively small radius abutting against the slider 21 to the second end 2212 with a relatively large radius abutting against the slider 21, the slider 21 drives the sleeve 23 and the clamped rod electrode 200 to approach the disk electrode 300 carried by the bearing end 311 of the rotating shaft 31 along the first direction X. The slider 21 moves along the first direction X while squeezing the first elastic member 26. Figure 2 , when the second end 2212 abuts against the slider 21, the slider 21 is at the lowest position of its moving range along the first direction X, and the first driving member 12 drives the rod electrode 200 clamped 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 surfaces of the rod electrode 200 clamped by the slider 21 and the disk electrode 300 carried by the carrying 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 are not in contact with the slider 21 .

[0088] The second state is that the fourth end 2222 with a relatively large radius of the second cam 222 abuts against the slider 21, and the second cam 222 rotates from the third end 2221 with a relatively small radius abutting against the slider 21 to the fourth end 2222 with a relatively large radius abutting against the slider 21. Since the first spacing between the second end 2212 and the bearing end 311 when the second end 2212 abuts against the slider 21 is smaller than the second spacing between the fourth end 2222 and the bearing end 311 when the fourth end 2222 abuts against the slider 21, the slider 21 is Under the action of elastic deformation, the first elastic member 26 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, and releases the contact with the disk electrode 300. When the second cam 222 rotates to the fourth end 2222 and abuts against the slider 21, since the difference between the second spacing and the first spacing is at the preset spacing, the spacing H between the adjacent end surfaces of the rod electrode 200 and the disk electrode 300 is at the preset spacing. At the same time, the slider 21 still keeps squeezing the first elastic member 26. Moreover, when the second end 2212 abuts against the slider 21, refer to Figure 3 , the first end 2211 and the second end 2212 of the first cam 221 are not 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 contracts along the first direction X.

[0089] The third state is: the third end 2221 of the second cam 222 with a relatively small radius abuts against the slider 21. In 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 member 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 spacing 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 spacing. Thus, the grinding member 51 in the subsequent grinding unit 50 can extend between the rod electrode 200 and the disk electrode 300 to grind the end of the rod electrode 200 after the excitation process, thereby ensuring the cleanliness of the end of the rod electrode 200 during the next excitation process, ensuring the smooth excitation and the accuracy of subsequent detection. Figure 4 When the third end 2221 abuts against the slider 21 , the first end 2211 and the second end 2212 of the first cam 221 are not in contact with the slider 21 .

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

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

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

[0093] Moreover, the first elastic member 26 is provided to support the slider 21, thereby ensuring the stability of the slider 21 and the clamped rod electrode 200 moving along the first direction X. In some embodiments, referring to Figure 2 to Figure 4 as well as Fig. 9 and Fig.10 The rotating unit 30 further includes a fifth driving member 32, referring to Fig. 9 and Fig.10 The rotating unit 30 further includes a flow guide 33, referring to Fig. 9The fifth driving member 32 is connected to one end of the rotating shaft 31 by the bearing end 311 to drive the rotating shaft 31 to rotate. Specifically, one end of the rotating shaft 31 away from the bearing end 311 along the third direction Z is connected to the fifth driving member 32 through a synchronous pulley. The fifth driving member 32 is a rotating motor, which drives the rotating shaft 31 to rotate through the synchronous pulley. 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 conductively connected to the rotating shaft 31 to introduce the 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, and the guide member 33 and the rotating shaft 31 are both made of 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 arc.

[0094] In some embodiments, reference Fig. 9 and Fig.10 The rotating unit 30 further includes a pressing member 34, which is disposed between the bearing end 311 and the fifth driving member 32. The pressing member 34 is connected to the flow guide 33, and the pressing member 34 can squeeze the flow guide 33, so that the flow guide 33 can maintain a conductive connection with the rotating shaft 31 during the rotation of the rotating shaft 31. The design of the pressing member 34 forms a squeeze on the flow guide 33, thereby ensuring a stable contact between the flow guide 33 and the rotating shaft 31, and even in the process of the rotating shaft 31 rotating, the conductive connection between the flow guide 33 and the rotating shaft 31 can still be maintained, thereby ensuring 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, reference Fig. 9 The rotating unit 30 further includes a fourth mounting seat 35, a fourth mounting cavity 350 is provided inside the fourth mounting seat 35, the rotating shaft 31 is inserted into the fourth mounting seat 35, and the fourth mounting seat 35 supports and fixes the rotating shaft 31, referring to Fig. 9 and Fig.10The pressing member 34 also includes a pressing seat 341, a connecting seat 342 and a second elastic member 343. The connecting seat 342 extends along the first direction X. The connecting seat 342 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 is provided with a receiving cavity 3420 communicating with the fourth mounting cavity 350. The flow guide 33 is inserted into the connecting seat 342. A protrusion 331 is protruded on the side wall of the flow guide 33 located in the receiving cavity 3420. The protrusion 331 surrounds the flow guide 33 along the circumferential direction of the flow guide 33. One end of the flow guide 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 member 33 is located outside the connecting seat 342 to access the 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 member 33. The second elastic member 343 is sleeved on the flow guide member 33 located in the accommodating cavity 3420. One end of the second elastic member 343 abuts against the clamping seat 341, and the other end abuts against the protrusion 331. The matching design of the clamping seat 341 and the second elastic member 343 enables the clamping seat 341 to compress the second elastic member 343, thereby pressing the flow guide member 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 member 33 can be maintained at all times.

[0096] In some embodiments, reference Fig.11 and Fig.12 The sampling unit 40 also includes a second mounting seat 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 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. Specifically, the top plate 431, the bottom plate 432 and the side plate 433 are connected to form a horizontal U-shaped structure, and the second mounting cavity 430 is defined inside. The sample box 41 is arranged on a side of the top plate 431 away from the bottom plate 432 along the first direction X, and the output end of the third driving member 42 is connected to the second mounting seat 43 to drive the second mounting seat 43 to move along the first direction X.

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

[0098] In some embodiments, the third driving member 42 is a cam mechanism, referring to Figure 2 to Figure 4 as well as Fig.11 and Fig.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, so as to drive the second mounting seat 43 to move along the first direction X. Specifically, referring to Fig. 9 The third cam 421 includes a fifth end 4211 and a sixth end 4212 that are 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 until the sixth end 4212 abuts against the top plate 431, and part of the disk electrode 300 can be immersed in the sample oil in the sample box 41; the third cam 421 rotates until the fifth end 4211 abuts against the top plate 431, and the disk electrode 300 is separated from the sample box 41.

[0099] Specific as Fig.11 and Fig.12 In the illustrated embodiment, the sampling unit 40 further includes a fifth mounting seat 44 and a guide column 45. The fifth mounting seat 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 seat 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 plate 442 and the bottom plate 432 are stacked along the first direction X. The guide column 45 is inserted into the bottom plate 432, the support plate 442 and the top plate 431. The top plate 431 can slide along the guide column 45. Specifically, through the rotation of the third cam 421, the top plate 431 is driven to slide on the guide column 45 along the first direction X, so as to drive the sample box 41 to move along the first direction X.

[0100] The third driving member 42 adopts a cam mechanism design, and the top plate 431 is driven to move along the first direction X by the rotation of the third cam 421, 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 along the first direction X to the disk electrode 300 carried by the bearing end 311 of the rotating shaft 31. 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, so that the disk electrode 300 samples the sample oil. The second state is: the fifth end 4211 with a relatively small radius abuts against the top plate 431. During the process of the third cam 421 rotating from the sixth end 4212 with a relatively large radius abutting against the top plate 431 to the fifth end 4211 with a relatively small 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 is separated from the disk electrode 300, and the disk electrode 300 cannot sample from the sample box 41. Therefore, 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 member 42 only needs to drive the top plate 431 to move along the guide column 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, thereby reducing the complexity of the third driving member 42 driving the top plate 431.

[0101] In some embodiments, reference Figure 8 and Fig. 9 The third driving member 42 further includes a second transmission shaft 422 and a second driving end 423. The second transmission shaft 422 is inserted into the support plate 442. The third cam 421 is sleeved on the second transmission shaft 422 located inside the second installation cavity 430. The second driving end 423 is connected to the second transmission shaft 422 located outside the second installation cavity 430. The second driving end 423 drives the second transmission shaft 422 to rotate, thereby driving the third cam 421 to rotate. Fig. 9, the third cam 421 has a third hole 4213 sleeved on the second transmission shaft 422, the radius of the fifth end 4211 is the distance between the fifth end 4211 and the center of the third hole 4213, and the radius of the sixth end 4212 is the distance between the sixth end 4212 and the center of the third hole 4213. Specifically, the fifth end 4211 is the closest point of the contour line of the third cam 421, and the sixth end 4212 is the farthest point of the contour line of the third cam 421. The closest point of 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 along the first direction X as expected during the rotation of the third cam 421. 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 along the first direction X as expected during the rotation of the third cam 421.

[0102] In some embodiments, reference Fig.12 The third cam 421 is a cam of equal width, that is, the third cam 421 has two parallel tangents 4210, the distance between the two tangents 4210 is L1 mm, and the value of L1 is a constant, and the distance between the opposite surfaces of the top plate 431 and the bottom plate 432 is L2 mm, satisfying: L1 = L2, thereby ensuring that the third cam 421 is always in contact with the top plate 431, so that the top plate 431 is not suspended during the movement (i.e., rising or falling) along the first direction X, ensuring the stability of the top plate 431 and the sample box 41 moving along the first direction X, refer to Fig.12 , a first inclined surface 4331 is formed at the connection between the side plate 433 and the top plate 431, a second inclined surface 4332 is formed at the connection between the side plate 433 and the bottom plate 432, the third cam 421 rotates to the sixth end 4212 to abut against the top plate 431, and the third cam 421 is tangent to the first inclined surface 4331, so that the top plate 431 is stably located at the position where the disk electrode 300 is immersed in the sample oil of the sample box 41, ensuring the sampling stability and continuity of the disk electrode 300; the third cam 421 rotates to the fifth end 4211 to abut against the top plate 431, and the third cam 421 is tangent to the second inclined surface 4332, so that the top plate 431 is stably located at 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 is scattered due to the shaking of the top plate 431.

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

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

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

[0106] In some embodiments, reference Figure 1 as well as Fig.13 and Fig.14 The excitation device 100 further includes a grinding unit 50, the grinding unit 50 includes a grinding member 51 and a sixth driving member 52, referring to Figure 1 The grinding member 51 is arranged on one side of the bearing end 311 along the second direction Y, and the grinding member 51 can rotate. The sixth driving member 52 is connected to the grinding member 51, and the sixth driving member 52 is used to drive the grinding member 51 to move along the second direction Y. The sixth driving member 52 can drive the grinding member 51 to move along the first direction Y to between the slider 21 and the rotating shaft 31, specifically, the grinding member 51 is moved between the sleeve 23 and the bearing end 311 of the rotating shaft 31, and the first driving member 12 can drive the rod electrode 200 to move and insert the grinding member 51, and the grinding of the rod electrode 200 is formed by the rotation of the grinding member 51. The matching design of the sixth driving member 52 and the grinding member 51 can move the grinding member 51 between the sleeve 23 and the bearing end 311 of the rotating shaft 31 after the excitation device 100 completes a sampling excitation process, and move the rod electrode 200 between the grinding member 51 through the first driving member 12. The rotation of the grinding member 51 forms a rotation of 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, thereby ensuring the cleanliness of the surface of the rod electrode 200 for the subsequent sampling excitation process and ensuring the detection accuracy of the subsequent arc direct-reading atomic oil spectrometer.

[0107] In some embodiments, reference Figure 1 , Fig.13 and Figure 4The grinding unit 50 also includes a third mounting seat 53, a seventh driving member 54 and an eighth driving member 55. The grinding member 51 and the seventh driving member 54 are arranged at intervals 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 seat 53 to drive the third mounting seat 53 to move along the second direction Y. The eighth driving member 55 is arranged 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 drive the third mounting seat 53 to move along the first direction X. The design of the third mounting seat 53 can ensure the assembly stability of the grinding member 51 and the seventh driving member 54. The sixth driving member 52 can form an integral drive for the grinding member 51 and the seventh driving member 54. The seventh driving member 54 can ensure the stable driving of the grinding member 51 to rotate. The design of the eighth driving member 55 can drive the sixth driving member 52 and the grinding member 51 and the seventh driving member 54 arranged on the third mounting seat 53 to move (rise or fall) together in the first direction X. The matching design of the eighth driving member 55 and the sixth driving member 52 can drive the grinding member 51 to move in the second direction Y and the first direction X, thereby avoiding the interference of the grinding member 51 with the disk electrode 300 during the grinding of the rod electrode 200, thereby ensuring the stability of grinding.

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

[0109] In some embodiments, reference Fig.13 and Fig.14The third mounting seat 53 has a third mounting cavity 530 therein, the seventh driving member 54 includes a third transmission shaft 541, a sleeve 542, a coupling 543, a driving wheel 544 and a driven wheel 546, the third transmission shaft 541, the driving wheel 544 and the driven wheel 546 are all arranged in the third mounting cavity 530, the output end of the seventh driving member 54 is connected to the third transmission shaft 541, the third transmission shaft 541 is sleeved with a sleeve 542, the coupling 543 is sleeved on the sleeve 542, the coupling 543 and the driving wheel 54 4, with the seventh driving member 54 and the driving wheel 544, the end of the driving wheel 544 away from the coupling 543 is sleeved with a first bearing 545, and the driven wheel 546 is sleeved with a second bearing 547, so that the driven wheel 546 is driven to rotate by the driving wheel 544, and the grinding member 51 is connected to the driven wheel 546, and 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, and then drives the grinding member 51 to rotate, so as to grind the rod electrode 200 extending into the grinding member 51.

[0110] In some embodiments, reference Fig.13 and Fig.14 The grinding unit 50 also includes a third bearing 56, which surrounds the grinding member 51 along the circumferential direction of the grinding member 51. The design of the third bearing 56 can make the rotation of the grinding member 51 smoother, and also ensure 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, reference Fig.14 The grinding unit 50 also includes a bracket 57, which is arranged inside the third mounting cavity 530 and connected to a driven wheel 546. The grinding member 51 is mounted on the bracket 57. The driven wheel 546 drives the grinding member 51 to rotate through the bracket 57, thereby ensuring the rotation stability of the grinding member 51.

[0112] In some embodiments, the grinding element 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 cone angle of 170°.

[0114] In some embodiments, the sixth driving member 52 is a gas cylinder or an oil cylinder, and the sixth driving member 52 is connected to the third mounting seat 53 via a piston rod.

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

[0116] In some embodiments, reference Figure 1 to Figure 4 and Fig. 9 The excitation device 100 further includes a mounting plate 60, the mounting plate 60 includes a first surface 61 and a second surface 62 which are arranged opposite to each other along a third direction Z, the sample injection unit 10, the sample delivery unit 20 and the sampling unit 40 are arranged on the first surface 61 at intervals along the first direction X; the rotating shaft 31 is inserted into the mounting plate 60, and the bearing end 311 is arranged on the side of the first surface 61 away from the second surface 62 along the third direction Z. The arrangement of the mounting plate 60 can ensure the installation stability of the sample injection unit 10, the sample delivery unit 20 and the sampling unit 40. Among them, the sample delivery unit 20 is installed on the first surface 61 of the mounting plate 60 through the first mounting seat 24, and the sampling unit 40 is installed on the first surface 61 of the mounting plate 60 through the fifth mounting seat 44. The grinding unit 50 is installed on the first surface 61 of the mounting plate 60 through the third mounting seat 53.

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

[0118] In some embodiments, reference Figure 1 to Figure 4 The excitation device 100 also includes a detection unit 70, which is arranged on the mounting plate 60. The detection end of the detection unit 70 is directed along the second direction Y toward 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 signals to the arc direct-reading atomic oil spectrometer for detection and analysis.

[0119] In some embodiments, the excitation device 100 also 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 connected to the controller for communication.

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

[0121] In some embodiments, reference Figure 7 A high voltage line 201 is connected to the rod electrode 200, and one end of the high voltage line 201 facing away from the rod electrode 200 is grounded, so that a pressure difference is formed between the disk electrode 300 with high voltage and the rod electrode 200 within a preset distance, and then an arc is generated between the disk electrode 300 and the rod electrode 200 to excite the sample oil.

[0122] The use of the excitation device 100 provided in the embodiment of the present application is as follows:

[0123] The sample oil is placed in the sample box 41;

[0124] Close the box door, and the excitation switch sends an excitation 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, and the second cam 222 does not contact the slider 21. The first driving member 12 drives the rod electrode 200 clamped by the slider 21 to extend along the first direction X to abut against the disk electrode 300 carried by the bearing end 311, and 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, and the first cam 221 does not contact the slider 21, and the slider 21 moves along the first direction X to the excitation position, so that the spacing H between the adjacent end surfaces of the rod electrode 200 and the disk electrode 300 is at a preset spacing;

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

[0127] A high voltage is introduced into the rotating shaft 31 through the flow guide 33, so that the disk electrode 300 is provided with a high voltage, and a pressure difference is formed between the disk electrode 300 and the rod electrode 200 through the grounding treatment of the high voltage line 201, and the distance H between the adjacent end surfaces of the rod electrode 200 and the disk electrode 300 is at a preset distance, so that an arc is generated between the rod electrode 200 and the disk electrode 300;

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

[0129] The excited light wave is detected and collected by the detection unit 70, and the detected light wave signal is transmitted to the arc direct-reading atomic oil spectrometer. The type of metal element is determined by measuring the wavelength of the light wave by the arc direct-reading atomic oil spectrometer, and the content of a certain metal element in the sample oil is determined by measuring the intensity of the light wave of 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, and the sample box 41 is separated from the disk electrode 300. When the disk electrode 300 moves out of the sample box 41, the sixth driving member 52 stops rotating and stops providing high voltage to the rotating shaft 31 through the flow guide member 33, thus completing a sampling and 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, and drives the slider 21 to rise to the highest position along the first direction X, so that the spacing H between the adjacent end faces of the rod electrode 200 and the disk electrode 300 is greater than the preset spacing.

[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 seat 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 into the inner side of the grinding member 51, and the rod electrode 200 is lightly pressed against the grinding member 51. The grinding member 51 is driven to rotate by the seventh driving member 54, so as to grind the rod electrode 200.

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

[0133] The first driving member 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 is a detailed introduction to an excitation device provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. An excitation device, characterized in that: include: A sample injection unit (10) comprises a storage element (11) and a first driving element (12), wherein the storage element (11) is used to accommodate a rod electrode (200), the first driving element (12) is arranged on one side of the storage element (11) along a first direction (X), and the first driving element (12) is used to drive the rod electrode (200) to move along the first direction (X); A sample delivery unit (20), comprising a slider (21) and a second driving member (22), wherein the slider (21) is arranged on a side of the storage member (11) away from the first driving member (12) along the first direction (X), the slider (21) is used to clamp the rod electrode (200), and the second driving member (22) is used to drive the slider (21) to move along the first direction (X); The rotating unit (30) comprises a rotating shaft (31), one end of the rotating shaft (31) along the length direction thereof is a bearing end (311) for bearing a disk electrode (300), the bearing end (311) is arranged on a side of the slider (21) away from the storage element (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 a high voltage, and the rotating shaft (31) can drive the disk electrode (300) to rotate; A sampling unit (40) comprises a sample box (41) and a third driving member (42), wherein the sample box (41) is arranged on a side of the carrying end (311) away from the slider (21), the sample box (41) is used to contain sample oil, and 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; The second driving member (22) drives the slider (21) to drive the clamped rod electrode (200) 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 at a preset distance, and 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 according to claim 1, characterized in that The preset spacing is 2.0 mm to 2.6 mm.

3. The excitation device according to claim 1, characterized in that: The sample injection unit (10) further comprises a fourth driving member (13); The storage element (11) is provided with a through hole (110) penetrating the storage element (11) along the first direction (X); the through holes (110) are multiple in number and arranged at intervals along the circumferential direction of the storage element (11); each of the through holes (110) can accommodate one of the rod electrodes (200); The fourth driving member (13) is capable of driving the storage member (11) to rotate, so that the first driving member (12) and one of the through holes (110) are arranged opposite to each other along the first direction (X), and the first driving member (12) is capable of pushing the rod electrode (200) in the through hole (110) to move along the first direction (X), so that the distance between the adjacent end surfaces of the rod electrode (200) and the disk electrode (300) is maintained at the preset distance.

4. The excitation device according to claim 3, characterized in that: The rod electrode (200) in the through hole (110) arranged 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 arranged opposite to the first driving member (12).

5. The excitation device according to claim 1, characterized in that: The second driving member (22) is used to drive the slider (21) to drive the clamped rod electrode (200) to be in the following states: First state: the rod electrode (200) clamped by the slider (21) abuts against the disk electrode (300) carried by the carrying end (311); Second state: along the first direction (X), the distance between the adjacent end faces of the rod electrode (200) clamped by the slider (21) and the disk electrode (300) carried by the carrying end (311) is within the preset distance; A third state: along the first direction (X), the distance between adjacent end surfaces of the rod electrode (200) clamped by the slider (21) and the disk electrode (300) carried by the carrying end (311) is greater than the preset distance.

6. The excitation device according to claim 5, characterized in that: The sample delivery unit (20) further comprises a sleeve (23) for inserting the rod electrode (200); The slider (21) is provided with an insertion hole (210) which passes through the slider (21) along the first direction (X); the sleeve (23) is inserted into the insertion hole (210); an elastic portion (230) is protrudingly provided on the inner wall of the sleeve (23); the elastic portion (230) is in a ring shape; the inner diameter of the elastic portion (230) is smaller than the outer diameter of the rod electrode (200); and the sleeve (23) forms an elastic clamping of the rod electrode (200) through the elastic portion (230); The first driving member (12) is capable of driving the rod electrode (200) to move in the sleeve (23).

7. The excitation device according to claim 5, characterized in that: The sample delivery unit (20) further comprises a first mounting seat (24), a support member (25) and a first elastic member (26); A first mounting cavity (240) is provided inside the first mounting seat (24), and the first mounting seat (24) comprises a first side wall (241) and a second side wall (242) which are arranged opposite to each other along the first direction (X); One end of the slider (21) for inserting the rod electrode (200) is located outside the first installation cavity (240), and the other end is located inside the first installation 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) is in contact with the second side wall (242), and the other end is in contact with the slider (21).

8. The excitation device according to claim 5, characterized in that: The second driving member (22) comprises a first cam (221) and a second cam (222); The first cam (221) and the second cam (222) are respectively in contact with one end of the slider (21) away from the bearing end (311), and the second driving member (22) is capable of driving the first cam (221) and the second cam (222) to rotate; The first cam (221) is a disc-shaped cam, and the first cam (221) comprises a first end (2211) and a second end (2212) that are arranged 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 disk-shaped cam, and the second cam (222) comprises a third end (2221) and a fourth end (2222) which are arranged opposite to each other, and the radius of the third end (2221) is smaller than the radius of the fourth end (2222); the first cam (221) rotates until the second end (2212) abuts against the slider (21), and the first driving member (12) drives the rod electrode (200) clamped by the slider (21) to abut against the disk electrode (300) carried by the carrying end (311); The second cam (222) rotates to the fourth end (2222) to abut against the slider (21), and the distance between the adjacent end faces of the rod electrode (200) clamped by the slider (21) and the disk electrode (300) carried by the carrying end (311) is within the preset distance; The second cam (222) rotates to the third end (2221) to abut against the slider (21), and the distance between the adjacent end surfaces of the rod electrode (200) clamped by the slider (21) and the disk electrode (300) carried by the carrying end (311) is greater than the preset distance; Wherein, along the first direction (X), the first cam (221) rotates to the second end (2212) to abut against the slider (21), and the distance between the second end (2212) and the bearing end (311) is a first distance; the second cam (222) rotates to the fourth end (2222) to abut against the slider (21), and the distance between the fourth end (2222) and the bearing end (311) is a second distance; the first distance is smaller than the second distance, and the difference between the second distance and the first distance is within the preset distance.

9. The excitation device according to claim 1, characterized in that: The rotating unit (30) further comprises a fifth driving member (32) and a flow guide member (33); The fifth driving member (32) is connected to an end of the rotating shaft (31) away from the bearing end (311) to drive the rotating shaft (31) to rotate; 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) carries high voltage.

10. The excitation device according to claim 9, characterized in that The rotating unit (30) further comprises a pressing member (34), wherein the pressing member (34) is arranged between the bearing end (311) and the fifth driving member (32), and the pressing member (34) is connected to the flow guide member (33). The pressing member (34) can squeeze the flow guide member (33) so that the flow guide member (33) can maintain an electrically conductive connection with the rotating shaft (31) during the rotation of the rotating shaft (31).

11. The excitation device according to claim 1, characterized in that: The sampling unit (40) further comprises a second mounting seat (43); The second mounting seat (43) comprises a top plate (431), a bottom plate (432) and a side plate (433), wherein 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), and the sample box (41) is arranged on a 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 seat (43) to drive the second mounting seat (43) to move along the first direction (X).

12. The excitation device according to claim 11, characterized in that: The third driving member (42) comprises a third cam (421), the third cam (421) is an output end of the third driving member (42), the third cam (421) is arranged inside the second mounting cavity (430), and the third driving member (42) can drive the third cam (421) to rotate, so as to drive the second mounting seat (43) to move along the first direction (X); The third cam (421) is a disc-shaped cam, and the third cam (421) comprises a fifth end (4211) and a sixth end (4212) that are arranged opposite to each other, and 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) to abut against the top plate (431), so that part of the disk electrode (300) can be immersed in the sample oil in the sample box (41); The third cam (421) rotates until the fifth end (4211) abuts against the top plate (431), and the disk electrode (300) is separated from the sample box (41).

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

14. The excitation device according to claim 1, characterized in that: The excitation device further comprises a grinding unit (50), wherein the grinding unit (50) comprises a grinding member (51) and a sixth driving member (52), wherein the grinding member (51) is arranged on one side of the bearing end (311) along the second direction (Y); The grinding member (51) is rotatable, and the sixth driving member (52) is used to drive the grinding member (51) to move along the second direction (Y); The sixth driving member (52) is capable of driving the grinding member (51) to move along the second direction (Y) to between the slider (21) and the rotating shaft (31); the first driving member (12) is capable of driving the rod electrode (200) to move and insert into the grinding member (51); and the grinding member (51) is rotated to grind the rod electrode (200); The first direction (X) intersects with the second direction (Y).

15. The excitation device according to claim 14, characterized in that The grinding unit (50) further comprises a third mounting seat (53), a seventh driving member (54) and an eighth driving member (55); The grinding member (51) and the seventh driving member (54) are arranged on the third mounting seat (53) at intervals 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 seat (53) to drive the third mounting seat (53) to move along the second direction (Y); The eighth driving member (55) is connected to the sixth driving member (52) to drive the sixth driving member (52) to drive the third mounting seat (53) to move along the first direction (X).

16. The excitation device according to claim 1, characterized in that: The excitation device further comprises a mounting plate (60), the mounting plate (60) comprising a first surface (61) and a second surface (62) arranged opposite to each other along a third direction (Z), the sample injection unit (10), the sample delivery unit (20) and the sampling unit (40) being arranged on the first surface (61) at intervals along the first direction (X); The rotating shaft (31) is inserted into the mounting plate (60), and the bearing end (311) is arranged on a side of the first surface (61) 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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