Spectrometer sample introduction excitation device

Abstract

The utility model relates to the technical field of spectrum analysis instruments, and discloses a spectrograph sample introduction excitation device, which comprises a lifting platform module, a sample introduction excitation module, a sample introduction excitation module, a sample introduction excitation module and a sample introduction excitation module, and is characterized in that the lifting platform module comprises a first end plate and a second end plate; the cam assembly comprises a cam and a rotating shaft which are connected, and the cam is arranged between the first end plate and the second end plate; the cam is provided with a protruding part which protrudes outwards in the radial direction. The fixing module comprises a clamping assembly which is connected to the sliding seat in a sliding manner; the reset piece is fixed to the sliding base and connected with the side, in the height direction, of the clamping assembly. According to the spectrograph sample introduction excitation device provided by the utility model, the circulating action of the cam is converted into the lifting action of the sliding frame, so that the oil sample replacement process is quick, simple and convenient, the consistency of analysis gaps is ensured when a rod electrode is replaced by virtue of the elastic action of the elastic piece in the reset piece, the sample introduction switching analysis of small sample quantity and multiple sample types is facilitated, and the operation is simple and convenient. Actual detection requirements are met, and the practical economic value and the operation convenience value of the equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spectral analysis instruments, and particularly relates to a sample introduction and excitation device for a spectrometer. Background Art

[0002] An oil sample spectroanalyzer is an instrument used to analyze and evaluate the chemical components and properties of lubricating oils, hydraulic oils, gear oils, and other industrial lubricants. Its working principle is usually based on one of two technologies: atomic emission spectroscopy or infrared spectroscopy, and it is widely used.

[0003] In the related art, during the use of an oil sample spectroanalyzer, the product sample needs to be replaced multiple times. Among them, when replacing the oil sample, the replacement process is rather cumbersome, time-consuming, and laborious; when replacing the rod electrode, it is difficult to ensure the consistency of the analysis gap value, which affects the progress of the analysis process. Content of the Utility Model

[0004] In view of this, the utility model provides a sample introduction and excitation device for a spectrometer to solve the problems that the operation is cumbersome when replacing the oil sample multiple times in an oil sample spectroanalyzer, and it is difficult to ensure the consistency of the analysis gap value when replacing the rod electrode.

[0005] The utility model provides a sample introduction and excitation device for a spectrometer, including: a lifting platform module, including a carriage, a bracket, and a cam assembly. The carriage includes a first end plate and a second end plate spaced apart in the height direction. A guide shaft is connected between the first end plate and the second end plate. The guide shaft is also slidably connected to the bracket. The cam assembly includes a cam and a rotating shaft connected to each other. The cam is disposed between the first end plate and the second end plate. The cam has a protruding portion protruding radially outward. The cam is in contact with at least one end plate. An oil shell is placed at the first end plate, and an oil sample is contained in the oil shell. Among them, the lifting platform module has a sample introduction state in which the cam rotates to make the protruding portion abut against the first end plate, so that the oil shell rises in the height direction, and a sample discharging state in which the cam continues to rotate to make the protruding portion abut against the second end plate, so that the oil shell descends in the height direction; a fixing module, including a clamping assembly, a sliding seat, and a resetting member. The clamping assembly is slidably connected to the sliding seat. The resetting member is fixed to the sliding seat and is connected to one side of the clamping assembly in the height direction. A rod electrode is clamped by the clamping assembly.

[0006] Beneficial effects: By providing a lifting platform module in which a first end plate, a second end plate and a cam assembly cooperate, and a fixing module in which a clamping assembly, a sliding seat and a reset member cooperate, by means of the abutting actions of the cam against the first end plate and the second end plate respectively, the cyclic motion of the cam is converted into the lifting motion of the carriage, so as to achieve the purpose of making the oil sample replacement process fast and simple. By means of the elastic action of the elastic member in the reset member, the purpose of ensuring a consistent analysis gap when replacing the rod electrode is achieved, which helps to perform sampling switching analysis with a small sample volume and a variety of sample types, meet the actual detection requirements, and greatly improve the practical economic value and operation convenience value of the equipment; By providing a replaceable sample cover, and by virtue of the characteristic that the height value of each vertex is the same when the cam rotates, that is, the lifting distance of the cam structure is the same each time, the injection volume of each oil sample is the same, and it is not easy to introduce impurities or errors due to manual operation, ensuring accurate analysis results, simple and convenient operation process, and strong practicability.

[0007] In an alternative embodiment, the reset member includes a rod and an elastic member, and the elastic member is disposed around the circumference of the rod; the rod passes through and is fixed to the clamping assembly, and one end of the elastic member is fixed to the clamping assembly; the circumference of the elastic member is fixed to the sliding seat, and is adapted to drive the clamping assembly to move in the height direction for resetting.

[0008] In an alternative embodiment, the clamping assembly includes a fixed clamping plate and a movable clamping plate that are connected, the fixed clamping plate is slidably connected to the sliding seat, and the reset member is connected to the fixed clamping plate; a long groove is formed in the fixed clamping plate in the height direction, the rod electrode passes through the long groove and is clamped between the fixed clamping plate and the movable clamping plate.

[0009] In an alternative embodiment, it further includes a base plate, the lifting platform module and the fixing module are both disposed on the base plate and are spaced apart in the height direction; a disk electrode is coaxially connected to a vertical shaft, and the vertical shaft is rotatably disposed on the base plate; the axis direction of the disk electrode is perpendicular to the height direction; the disk electrode is located between the lifting platform module and the fixing module; the first side circumference of the disk electrode in the height direction corresponds to the end of the rod electrode, and the second side circumference corresponds to the oil shell opening.

[0010] In an alternative embodiment, a limiting groove is recessed and formed on one side plate surface of the first end plate in contact with the oil shell, the oil shell is placed in the limiting groove, and one side of the limiting groove is open outward.

[0011] In an alternative embodiment, the carriage further includes a connecting plate, which is respectively connected to the first end plate and the second end plate; at least two guide shafts are respectively disposed between the first end plate and the second end plate, and at least two of the guide shafts respectively penetrate through the bracket.

[0012] In an alternative embodiment, the rotating shaft penetrates through the bracket and is rotatably arranged; a handle is sleeved on the circumference of the rotating shaft, which is suitable for assisting in rotating the rotating shaft.

[0013] In an alternative embodiment, the sliding seat includes a seat body and a sliding rod, the sliding rod is fixed to the seat body in the height direction, the fixed clamping plate is arranged at the seat body, and the sliding rod penetrates through the fixed clamping plate.

[0014] In an alternative embodiment, a torsion spring is arranged at the connection position between the fixed clamping plate and the movable clamping plate, and the torsion spring is suitable for clamping the rod electrode by the fixed clamping plate and the movable clamping plate.

[0015] In an alternative embodiment, the bracket and the seat body are respectively fixed to the substrate. Description of the Drawings

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the sample introduction and excitation device of the spectrometer of the present invention;

[0018] Figure 2 It is Figure 1 the enlarged schematic diagram at A in

[0019] Figure 3 It is a schematic diagram of the present invention after the sample is taken out by the lifting platform module;

[0020] Figure 4 It is a schematic diagram of the present invention after the sample is taken out by the spectrometer sample introduction and excitation device;

[0021] Figure 5 It is a schematic diagram of the lifting platform module of the present invention;

[0022] Figure 6 It is a schematic diagram of the cam assembly of the present invention;

[0023] Figure 7 It is a schematic diagram of the carriage of the present invention;

[0024] Figure 8 This is a schematic structural view of one of the fixing modules of the present utility model;

[0025] Figure 9 This is another schematic structural view of the fixing module of the present utility model;

[0026] Figure 10 This is a schematic view of the cooperation of the reset member, the fixed clamping plate and the sliding seat of the present utility model;

[0027] Figure 11 This is a schematic view of the cooperation between the reset member and the sliding seat of the present utility model.

[0028] Explanation of reference numerals:

[0029] 1. Lifting platform module; 11. Slide carriage; 111. First end plate; 112. Second end plate; 113. Connecting plate; 114. Limiting groove; 12. Bracket; 13. Cam assembly; 131. Cam; 132. Rotating shaft; 133. Protruding portion; 134. Reinforcing portion; 14. Guide shaft; 3. Oil sump; 4. Fixing module; 41. Clamping assembly; 411. Fixed clamping plate; 412. Movable clamping plate; 413. Long groove; 414. Auxiliary rod; 42. Sliding seat; 421. Seat body; 422. Slide bar; 43. Reset member; 431. Rod member; 432. Elastic member; 44. Torsion spring; 5. Rod electrode; 6. Substrate; 7. Disk electrode; 71. Vertical shaft; 8. Handle. Detailed implementation manners

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] The following Figures 1 to 11 is combined to describe the embodiments of the present utility model.

[0035] According to an embodiment of the present utility model, a spectrometer sampling and excitation device is provided, including: a lifting platform module 1, including a carriage 11, a bracket 12, and a cam assembly 13. The carriage 11 includes a first end plate 111 and a second end plate 112 spaced apart in the height direction. A guide shaft 14 is connected between the first end plate 111 and the second end plate 112. The guide shaft 14 is also slidably connected to the bracket 12. The cam assembly 13 includes a cam and a rotating shaft 132 connected to each other. The cam is disposed between the first end plate 111 and the second end plate 112. The cam has a protruding portion 133 protruding radially outward. The cam is in contact with at least one end plate. An oil shell 3 is placed at the first end plate 111, and an oil sample is contained in the oil shell 3. Among them, the lifting platform module 1 has a sampling state in which the cam rotates to make the protruding portion 133 abut against the first end plate 111 to raise the oil shell 3 in the height direction, and a state of lowering the sample in which the cam continues to rotate to make the protruding portion 133 abut against the second end plate 112 to lower the oil shell 3 in the height direction. A fixing module 4, including a clamping assembly 41, a sliding seat 42, and a reset member 43. The clamping assembly 41 is slidably connected to the sliding seat 42. The reset member 43 is fixed to the sliding seat 42 and is connected to one side of the clamping assembly 41 in the height direction. A rod electrode 5 is clamped by the clamping assembly 41.

[0036] The reset member 43 includes a rod member 431 and an elastic member 432. The elastic member 432 is disposed around the circumference of the rod member 431. The rod member 431 penetrates through the clamping assembly 41 and is fixed to the clamping assembly 41. One end of the elastic member 432 is fixed to the clamping assembly 41. A part of the circumference of the elastic member 432 is fixed to the slide base 42, and is adapted to drive the clamping assembly 41 to move in the height direction for resetting. Wherein, an installation hole is formed in the slide base 42, the reset member 43 passes through the installation hole, and a part of the outer circumference of the elastic member 432 is fixed to the inner wall of the installation hole.

[0037] The clamping assembly 41 includes a fixed clamping plate 411 and a movable clamping plate 412 that are joined together. A torsion spring 44 is connected between the fixed clamping plate 411 and the movable clamping plate 412. The torsion spring 44 is used to clamp the rod electrode 5 between the fixed clamping plate 411 and the movable clamping plate 412. The fixed clamping plate 411 is slidably connected to the slide base 42, and the reset member 43 is connected to the fixed clamping plate 411. A secondary rod 414 is provided on the movable clamping plate 412. The secondary rod 414 can facilitate the operator to open the clamping assembly 41, and the movable clamping plate 412 can be opened by a relatively simple pushing method. A long groove 413 is formed in the fixed clamping plate 411 along the height direction. The rod electrode 5 passes through the long groove 413 and is clamped between the fixed clamping plate 411 and the movable clamping plate 412. The length of the long groove 413 is relatively long, which is a large-size groove to increase the contact with the rod electrode 5. And the cross-sectional shape of the long groove 413 is V-shaped, which ensures that the rod electrode 5 will not tilt and fall when the fixture is loosened.

[0038] A limiting groove 114 is recessed and formed on one side plate surface of the first end plate 111 that is in contact with the oil shell 3. The oil shell 3 is placed in the limiting groove 114, and one side of the limiting groove 114 is open outward, which is conducive to putting the oil shell 3 in.

[0039] The rotating shaft 132 penetrates through the bracket 12 and is rotatably arranged. A handle 8 is sleeved on the circumference of the rotating shaft 132. The handle 8 is in the form of a grip and is used to assist the operator to rotate the rotating shaft 132, facilitating the operator to raise and lower the sample stage with a simple push-pull operation.

[0040] The specific usage process of the spectrometer sampling and excitation device is as follows. The lifting platform module 1 is responsible for the sampling work of the oil sample, which is easy to replace the sample, and then enables the sampling switching and analysis with a small sample quantity and a variety of sample types. The fixing module 4 is responsible for the fixing and self-resetting work of the rod electrode 5, which is convenient to ensure the size of the analysis gap between the rod electrode 5 on the excitation side and the disk electrode 7 after replacing the rod electrode 5. Specifically, during the oil sample injection, the sample oil is contained in the oil shell 3, and the size of the oil shell 3 matches the size of the disk electrode 7, which helps to save the sample oil volume and thus enables the oil sample switching analysis with a small sample quantity. The sampling process is as follows: Place the oil shell 3 containing the sample oil in the limit groove 114 of the first end plate 111. The limit groove 114 can prevent the oil shell 3 from shaking and shifting during the sample feeding process. Then, turn the rotating shaft 132 by means of the grip, which drives the cam to rotate around the axis of the rotating shaft 132. The convex part of the cam abuts against the first end plate 111 and jacks up the first end plate 111 in the height direction as the cam rotates. The carriage 11 moves upward, and the oil shell 3 moves upward, so that the disk electrode 7 partially immerses into the sample oil in the oil shell 3. The disk electrode 7 rotates to evenly attach the sample oil to the electrode surface. Then, continue to turn the rotating shaft 132. The continuous rotation direction can be the same as or opposite to the rotation direction during sampling, so that the cam continues to rotate forward or backward, and then disengages from the contact with the first end plate 111, and then abuts against the second end plate 112 and jacks down the second end plate 112 in the height direction as the cam rotates. The carriage 11 moves downward, the oil shell 3 moves downward, and the oil shell 3 separates from the disk electrode 7, and then the subsequent excitation work can be carried out. When switching the sample, only need to remove the oil shell 3 and replace the sample oil in the oil shell 3. The sampling and sample removal processes are the same as above. When installing the rod electrode 5, grasp the auxiliary rod 414 and apply a downward force to open the moving clamping plate 412. Place the rod electrode 5 into the long groove 413. The long groove 413 is a long V-shaped groove, which can better limit the movement and shaking of the rod electrode 5 and improve the fixing stability of the rod electrode 5. Release the moving clamping plate 412, and the moving clamping plate 412 returns to its position under the action of the torsion spring 44 and presses tightly against the fixed clamping plate 411, so that the rod electrode 5 is clamped at the clamping assembly 41. Among them, in the normal working state, the clamping assembly 41 is stably arranged at the sliding seat 42 by the pulling force of the elastic member 432. During the installation process of the rod electrode 5, the overall force balance state of the clamping assembly 41 is temporarily broken, and the clamping assembly 41 fluctuates up and down at the sliding seat 42. After the rod electrode 5 is fixed, the operator no longer touches the clamping assembly 41. The elastic member 432 makes the clamping assembly 41 stable and reset by means of the elastic force, and the clamping assembly 41 returns to the same height position as in the normal working state, so that the gap value between the end of the rod electrode 5 and the disk electrode 7 is consistent.

[0041] In this embodiment, by providing a lifting platform module 1 formed by the cooperation of a first end plate 111, a second end plate 112 and a cam assembly 13, and a fixing module 4 formed by the cooperation of a clamping assembly 41, a sliding seat 42 and a resetting member 43, by means of the abutting action of the cam 131 against the first end plate 111 and the second end plate 112 respectively, the cyclic movement of the cam 131 is converted into the lifting movement of the carriage 11, so as to achieve the purpose of making the oil sample replacement process fast and simple. By means of the elastic action of the elastic member 432 in the resetting member 43, the purpose of ensuring the consistency of the analysis gap when replacing the rod electrode 5 is achieved, which helps to carry out sample injection switching analysis with a small amount of samples and various types of samples, meets the actual detection requirements, and greatly improves the practical economic value and operation convenience value of the equipment; by providing a replaceable sample cover, and by virtue of the characteristic that the height value of each vertex is the same when the cam 131 rotates, that is, the lifting distance of the cam structure is the same each time, the injection volume of each oil sample is the same, and it is not easy to introduce impurities or errors due to manual operation, ensuring the accuracy of the analysis result, the operation process is simple and convenient, and the practicability is strong.

[0042] In some embodiments, as shown in Figure 1 it further includes a substrate 6. The lifting platform module 1 and the fixing module 4 are both arranged at the substrate 6 and are spaced apart in the height direction. The substrate 6 serves as the basic frame structure of the excitation and sample injection components and provides an installation position; a disk electrode 7 is coaxially connected to a vertical shaft 71. The vertical shaft 71 is rotatably arranged at the substrate 6, and the vertical shaft 71 drives the disk electrode 7 to rotate, so as to make the sample injection uniform; the axis direction of the disk electrode 7 is perpendicular to the height direction, so that a part of the circumference of the disk electrode 7 corresponds to the opening of the oil shell 3; the disk electrode 7 is located between the lifting platform module 1 and the fixing module 4; the first side circumference of the disk electrode 7 in the height direction corresponds to the end of the rod electrode 5, and the disk electrode 7 and the rod electrode 5 are respectively at both ends when the sample is excited; the second side circumference of the disk electrode 7 in the height direction corresponds to the opening of the oil shell 3, which is conducive to sample injection.

[0043] In some embodiments, as shown in Figure 7 it, the carriage 11 further includes a connecting plate 113. The connecting plate 113 is respectively connected to the first end plate 111 and the second end plate 112, and is used to improve the stability between the first end plate 111 and the second end plate 112 and ensure the smoothness of the lifting process; at least two guide shafts 14 are respectively arranged between the first end plate 111 and the second end plate 112, and at least two of the guide shafts 14 respectively penetrate through the bracket 12, so that the carriage 11 is slidably arranged at the bracket 12, and the carriage 11 slides up and down smoothly at the bracket 12.

[0044] In some embodiments, as shown in Figure 6As shown, reinforcing portions 134 are respectively provided on opposite axial sides of the cam 131. The reinforcing portions 134 are fixed by bolts and are used to improve the stability of the cam 131 during rotation.

[0045] In some embodiments, in combination with Figure 11 As shown, the slide base 42 includes a base body 421 and a slide rod 422. The slide rod 422 is fixed to the base body 421 in the height direction. The fixed clamping plate 411 is provided at the base body 421, and the slide rod 422 passes through the fixed clamping plate 411, so that the fixed clamping plate 411 is slidably arranged at the slide base 42 in the height direction. Among them, two fixing plates are provided at the slide base 42, and the two fixing plates are spaced apart in the height direction. Both ends of the slide rod 422 are respectively fixed to the fixing plates. The fixed clamping plate 411 is located between the two fixing plates, and the reset member 43 passes through the fixing plates, and the elastic member 432 is fixedly connected to the fixing plates at the penetrating portions.

[0046] In some embodiments, in combination with Figure 1 As shown, the bracket 12 and the base body 421 are respectively fixed to the substrate 6, and the fixing method can be bolt fastening.

[0047] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. A spectrometer sampling excitation device, characterized in that: include: A lifting platform module (1) comprises a slide (11), a bracket (12) and a cam assembly (13); the slide (11) comprises a first end plate (111) and a second end plate (112) arranged at intervals in a height direction; a guide shaft (14) is connected between the first end plate (111) and the second end plate (112); the guide shaft (14) is also slidably connected to the bracket (12); The cam assembly (13) comprises a cam (131) and a rotating shaft (132) connected to each other, wherein the cam is arranged between the first end plate (111) and the second end plate (112); the cam (131) has a protruding portion (133) protruding outwardly in a radial direction; and the cam (131) contacts at least one end plate; An oil shell (3) is placed on the first end plate (111), and an oil sample is placed in the oil shell (3); The lifting platform module (1) has an intake state in which the cam (131) is rotated so that the protrusion (133) abuts against the first end plate (111) and the oil shell (3) rises in a height direction, and a discharge state in which the cam (131) continues to rotate so that the protrusion (133) abuts against the second end plate (112) and the oil shell (3) descends in a height direction; The fixing module (4) comprises a clamping assembly (41), a sliding seat (42) and a reset member (43), wherein the clamping assembly (41) is slidably connected to the sliding seat (42); the reset member (43) is fixed to the sliding seat (42) and connected to one side of the clamping assembly (41) along the height direction; The rod electrode (5) is clamped by the clamping assembly (41).

2. The spectrometer sample injection excitation device according to claim 1, characterized in that: The reset member (43) comprises a rod member (431) and an elastic member (432), wherein the elastic member (432) is arranged around the periphery of the rod member (431); The rod (431) passes through the clamping assembly (41) and is fixed, and one end portion of the elastic member (432) is fixed to the clamping assembly (41); The periphery of the elastic member (432) is fixed to the slide seat (42), and is suitable for driving the clamping assembly (41) to move in the height direction for resetting.

3. The spectrometer sample injection excitation device according to claim 2, characterized in that: The clamping assembly (41) comprises a fixed clamping plate (411) and a movable clamping plate (412) connected to each other, the fixed clamping plate (411) is slidably connected to the sliding seat (42), and the reset member (43) is connected to the fixed clamping plate (411); The fixed clamping plate (411) is formed with a long groove (413) along the height direction, and the rod electrode (5) passes through the long groove (413) and is clamped between the fixed clamping plate (411) and the movable clamping plate (412).

4. The spectrometer sample injection excitation device according to claim 3, characterized in that: It also includes a base plate (6), the lifting platform module (1) and the fixing module (4) are both arranged on the base plate (6) and are spaced apart in the height direction; The disk electrode (7) is coaxially connected to the vertical shaft (71), and the vertical shaft (71) is rotatably arranged on the substrate (6); the axial direction of the disk electrode (7) is perpendicular to the height direction; The disk electrode (7) is located between the lifting platform module (1) and the fixing module (4); a first side peripheral portion of the disk electrode (7) along the height direction corresponds to the end of the rod electrode (5), and a second side peripheral portion corresponds to the opening of the oil casing (3).

5. The spectrometer sample injection excitation device according to claim 1, characterized in that: The first end plate (111) is provided with a concavely formed limiting groove (114) on a plate surface on one side in contact with the oil shell (3); the oil shell (3) is placed in the limiting groove (114), and one side of the limiting groove (114) is opened outwards.

6. The spectrometer sample injection excitation device according to claim 1, characterized in that: The slide frame (11) further comprises a connecting plate (113), wherein the connecting plate (113) is respectively connected to the first end plate (111) and the second end plate (112); At least two guide shafts (14) are respectively arranged between the first end plate (111) and the second end plate (112), and at least two guide shafts (14) are respectively arranged to penetrate the bracket (12).

7. The spectrometer sample injection excitation device according to claim 1, characterized in that: The rotating shaft (132) passes through the bracket (12) and is rotatably arranged; A handle (8) is sleeved on the periphery of the rotating shaft (132) and is suitable for assisting the rotation of the rotating shaft (132).

8. The spectrometer sample injection excitation device according to claim 4, characterized in that: The sliding seat (42) comprises a seat body (421) and a sliding rod (422), wherein the sliding rod (422) is fixed to the seat body (421) along a height direction, the fixed clamping plate (411) is arranged on the seat body (421), and the sliding rod (422) penetrates the fixed clamping plate (411).

9. The spectrometer sample injection excitation device according to claim 8, characterized in that: A torsion spring (44) is provided at the connection position between the fixed clamping plate (411) and the movable clamping plate (412), and the torsion spring (44) is suitable for enabling the fixed clamping plate (411) and the movable clamping plate (412) to clamp the rod electrode (5).

10. The spectrometer sample injection excitation device according to claim 8, characterized in that: The bracket (12) and the base body (421) are respectively fixed to the base plate (6).

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