Integrated sulfur, nitrogen and chlorine element analyzer based on decomposition regulation mechanism

Abstract

The present application relates to the technical fields of elemental analysis instrument, and discloses an integrated sulfur-nitrogen-chlorine elemental analysis instrument based on a decomposition control mechanism, which comprises an analysis instrument body, a detector and a decomposition control mechanism arranged in the analysis instrument body; the decomposition control mechanism comprises a sample loading assembly, a flow guiding and gas supplying assembly, a control assembly, a lifting and guiding assembly and a gas guiding assembly. The control assembly drives the sample to rotate circumferentially under the driving of the driving assembly and to move axially reciprocatingly under the guidance of the lifting and guiding assembly, so as to drive the sample to continuously roll, tilt and displace; the sample loading assembly is provided with a shaking and dispersing assembly for periodically shaking and dispersing the sample; and the gas guiding assembly is used for conveying the decomposition generated gas to the detector for analysis and detection. The present application can improve the heating uniformity of the block sample in the decomposition process, reduce the sample accumulation and caking, and improve the accuracy and stability of the sulfur, nitrogen and chlorine element detection.

Description

Technical Field

[0001] This invention belongs to the technical field of elemental analyzers, and more specifically, relates to an integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism. Background Technology

[0002] The detection of sulfur, nitrogen, and chlorine content is widely used in the compositional analysis of coal, chemical raw materials, mineral samples, solid waste, and other industrial samples. Typically, an elemental analyzer is used to thermally decompose the sample at high temperatures, converting sulfur, nitrogen, and chlorine into their corresponding gaseous compounds. The generated gases are then quantitatively analyzed using a detector to obtain the content of the relevant elements in the sample.

[0003] The existing technology for elemental analyzers still has the following drawbacks: In existing technologies, sulfur, nitrogen, and chlorine element analyzers typically use a fixed sample loading method when thermally decomposing block samples. The sample's position remains basically unchanged during the decomposition process, and the heat is mainly concentrated on a single side or bottom of the sample. This causes the outer layer of the sample to heat up and coke first, while the inner region is not heated enough and cannot be fully decomposed, thus affecting the integrity of the release of sulfur, nitrogen, and chlorine elements.

[0004] In existing technologies, for blocky samples that are large in volume or irregular in shape, local softening and collapse are likely to occur during heating, which can lead to accumulation or clumping. This makes it difficult for hot air to continuously penetrate the interior of the sample, reducing the overall decomposition efficiency. At the same time, local accumulation of the sample can also cause excessively high local temperatures, further aggravating the problem of one-sided overheating and coking.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an integrated sulfur, nitrogen and chlorine elemental analyzer based on a decomposition control mechanism, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0006] This invention provides an integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism to overcome the aforementioned defects in the prior art.

[0007] The purpose and efficacy of this integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition and control mechanism are achieved through the following specific technical means: An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism includes an analyzer body, which houses a detector and a decomposition control mechanism, and further includes: The sample carrier assembly, disposed within the decomposition control mechanism, is used to carry the sample to be tested; A gas-guiding and supplying component is disposed below the sample-carrying component and is connected to the heating component. The gas-guiding and supplying component is used to guide the heated gas flow to the sample carried on the sample-carrying component. A control component is disposed below the sample carrier component and is connected to the drive component for transmission. The control component is used to drive the sample carrier component and the sample to rotate circumferentially. A lifting guide assembly is disposed outside the control assembly and fixed inside the disassembly control mechanism. The lifting guide assembly has a guide surface that is continuously undulating along the circumferential direction. During the circumferential rotation, the control assembly slides and engages with the guide surface to drive the control assembly to reciprocate along the axial direction. A gas export component, connecting the decomposition control mechanism and the detector, is used to deliver the decomposition generated gas to the detector.

[0008] In this scheme, the above structure enables the sample to continuously change its heating position during decomposition and achieve multi-directional uniform heating, reducing unilateral charring and improving the accuracy and stability of sulfur, nitrogen and chlorine element detection.

[0009] Preferably, the sample carrier assembly includes a placement plate and a breathable support member disposed on the placement plate. The breathable support member is used to support the block sample and allow the heating airflow to pass through. The breathable support member is a plurality of breathable blocks spaced apart along the placement plate, and an inverted V-shaped breathable member is provided between two adjacent breathable blocks.

[0010] In this design, the above structure ensures stable support for the block sample and allows hot air to penetrate from the bottom and sides of the sample, improving the overall uniformity of heating.

[0011] Preferably, the air supply component includes a through hole disposed inside the sample carrier component and a nozzle communicating with the through hole, the nozzle being disposed facing both sides of the sample carrier component.

[0012] In this scheme, the hot airflow is guided in multiple directions, so that the sides and bottom of the sample are heated at the same time, which further improves the decomposition efficiency.

[0013] Preferably, the control component includes a movable part and a plurality of top blocks disposed on the upper side of the movable part. The top blocks are slidably engaged with the sample carrying component to push the sample to tilt or flip when the movable part is raised or lowered.

[0014] In this scheme, the sample heating surface is continuously changed to avoid local high-temperature coking and improve the overall pyrolysis uniformity.

[0015] Preferably, the driving component includes a stepper motor and a circular plate connected to the output end of the stepper motor, the circular plate being used to drive the control component to rotate circumferentially.

[0016] This scheme provides a stable rotational power source for sample attitude adjustment, improving the continuity and controllability of overall control.

[0017] Preferably, the lifting guide assembly includes a fixed guide ring, the upper end of which is provided with a guide contour surface that is continuously undulating along the circumferential direction, and the control assembly is provided with a push block that slides in contact with the guide contour surface.

[0018] In this scheme, rotational motion is converted into lifting motion to achieve periodic tumbling and lifting of the sample, thereby enhancing the uniformity of decomposition.

[0019] Preferably, the movable part is provided with a toggle assembly, which drives the toggle component to rotate during the axial movement of the movable part, so as to flip the sample.

[0020] In this approach, the frequency of sample flipping is increased, ensuring that underheated areas are continuously exposed to the high-temperature environment. Preferably, the actuating assembly includes a rotating shaft and a sleeve threadedly engaged with the rotating shaft, wherein the sleeve drives the rotating shaft to rotate when the movable part moves axially.

[0021] In this design, the toggle assembly rotates synchronously during the lifting and lowering process, improving the stability and continuity of the flipping action.

[0022] Preferably, the placement plate is provided with a shaking dispersion component, which includes a plurality of vertically sliding push rods and a counterweight block that slides with the push rods. The upper end of the push rod is connected to the V-shaped ventilator, and an inclined guide surface is formed on the counterweight block. The lower end of the push rod slides with the inclined guide surface, and a plurality of guide protrusions are spaced apart on the inclined guide surface to drive the V-shaped ventilator to generate periodic shaking.

[0023] In this scheme, the sample can be continuously shaken to reduce sample accumulation and local agglomeration, and improve the penetration effect of hot airflow.

[0024] Preferably, the shaking dispersion component further includes a slider and a connector, wherein the slider and the top block are rotatably connected through the connector to drive the counterweight to move radially when the top block is raised or lowered.

[0025] In this scheme, the shaking and dispersing components are linked with the control components, so that the sample flipping and shaking are carried out simultaneously, further improving the decomposition uniformity.

[0026] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses an integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism. It comprises a sample carrier assembly, a gas supply and flow guiding assembly, a control assembly, and a lifting and guiding assembly. The gas supply and flow guiding assembly continuously guides heated gas flow to the sample on the sample carrier assembly. The control assembly rotates circumferentially under the drive assembly and simultaneously reciprocates axially under the guidance of the lifting and guiding assembly. This drives the sample to continuously rotate, tilt, flip, and displace, ensuring that the upper, side, and lower parts of the sample are continuously heated. This improves the overall heating uniformity and avoids the problem of unilateral continuous high temperature leading to outer layer coking and insufficient internal decomposition.

[0027] This invention discloses an integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism. By setting a shaking and dispersing component inside the placement plate, when the control component is raised or lowered, the top block drives the slider and counterweight to move radially through the connecting piece. The counterweight drives the push rod to move up and down through the inclined guide surface, and under the action of the guide protrusion, it drives the inverted V-shaped vent to generate periodic shaking, thereby continuously shaking and dispersing the blocky sample, reducing the local collapse and agglomeration of the sample under high temperature environment, and improving the penetration effect of the hot airflow into the sample interior and the overall decomposition efficiency. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a schematic diagram of the isometric structure of the present invention; Figure 2 This is an isometric structural diagram of the decomposition control mechanism in this invention; Figure 3 This is a front view structural diagram of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 for Figure 4 A magnified schematic diagram of the local structure at point D; Figure 6 This is a top view of the structure of the present invention; Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at point BB; Figure 8 for Figure 7A magnified schematic diagram of the local structure at point E; Figure 9 This is a top view of the decomposition and control mechanism in this invention. Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure at the CC section; Figure 11 for Figure 10 A magnified schematic diagram of the structure at point F in the middle.

[0031] Explanation of reference numerals in the attached figures: The analyzer body 10, cover plate 11, detector 12, viewing window 13, display screen 14, decomposition cylinder 15, limiting cover 16, placement plate 17, vent block 18, V-shaped vent component 19, movable component 20, top block 21, heater 22, fan 23, limiting ring 24, circular plate 25, stepper motor 26, guide ring 27, push block 30, rotating shaft 31, collar 32, sleeve 33, push component 34, through hole 35, spray hole 36, push rod 37, slide groove 38, counterweight block 39, elastic component 40, guide protrusion 41, slider 42, connecting component 43, purification mechanism 44. Detailed Implementation

[0032] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0033] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] As attached Figure 1 To be continued Figure 11 As shown: This invention provides an embodiment of an integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism. See attached document Figure 1 To be continued Figure 11 The analyzer includes an analyzer body 10, which contains a detector 12 and a decomposition control mechanism, and also includes: The sample carrier assembly, disposed within the decomposition control mechanism, is used to carry the sample to be tested; A gas-guiding and supplying component is disposed below the sample-carrying component and is connected to the heating component. The gas-guiding and supplying component is used to guide the heated gas flow to the sample carried on the sample-carrying component. A control component is disposed below the sample carrier component and is connected to the drive component for transmission. The control component is used to drive the sample carrier component and the sample to rotate circumferentially. A lifting guide assembly is disposed outside the control assembly and fixed inside the disassembly control mechanism. The lifting guide assembly has a guide surface that is continuously undulating along the circumferential direction. During the circumferential rotation, the control assembly slides and engages with the guide surface to drive the control assembly to reciprocate along the axial direction. A gas export component, connecting the decomposition control mechanism and the detector 12, is used to deliver the decomposition generated gas to the detector 12.

[0036] In practice, after the sample to be tested is placed on the sample carrier assembly, the gas supply assembly directs the heated airflow towards the sample. The control assembly, driven by the drive assembly, rotates circumferentially and moves axially in parallel under the guidance of the lifting guide assembly, thereby continuously changing the heating posture of the sample carrier assembly and the sample. The gas generated during sample decomposition is transported to the detector 12 via the gas exhaust assembly. This allows the sample to continuously change its heating position during decomposition, achieving uniform heating in multiple directions, reducing unilateral charring, and improving the accuracy and stability of sulfur, nitrogen, and chlorine element detection.

[0037] Preferred options are shown in the appendix. Figure 1 Appendix Figure 4 The analyzer body 10 is provided with a detachable cover plate 11 on the upper part, and a viewing window 13 and a display screen 14 are provided on the front side of the analyzer body 10. A purification mechanism 44 is provided between the detector 12 and the decomposition control mechanism.

[0038] Preferred options are shown in the appendix. Figure 2 Appendix Figure 4 Appendix Figure 7 Appendix Figure 10The decomposition control mechanism includes a decomposition cylinder 15. A limiting cover 16 and a limiting ring 24 are fixedly provided inside the decomposition cylinder 15. A placement plate 17 is rotatably provided on the lower inner wall of the limiting cover 16. A movable component 20 is movably provided inside the decomposition cylinder 15. The movable component 20 is located below the placement plate 17. A plurality of top blocks 21 are spaced apart on the upper side of the movable component 20. Each top block 21 is in vertical sliding contact with the placement plate 17. A plurality of groups of ventilating blocks 18 are spaced apart on the upper side of the placement plate 17. Each group of ventilating blocks 18 is staggered with the plurality of top blocks 21. An inverted V-shaped ventilating component 19 is provided between two adjacent ventilating blocks 18 in each group.

[0039] Preferred options are shown in the appendix. Figure 7 To be continued Figure 10 The inner wall of the limiting ring 24 is rotatably provided with a circular plate 25, and a plurality of rotating shafts 31 are rotatably provided on the circular plate 25. The lower outer wall of each rotating shaft 31 is provided with a collar 32, which rotates and contacts the circular plate 25. The upper end of each rotating shaft 31 is fixedly provided with a lever 34, which is located above the top block 21. The movable part 20 is provided with a plurality of sleeves 33, and the inner wall of each sleeve 33 is threadedly contacted with the outer wall of the corresponding rotating shaft 31.

[0040] Preferred options are shown in the appendix. Figure 7 Appendix Figure 8 The upper side of the limiting ring 24 is fixedly provided with a guide ring 27, and the upper part of the guide ring 27 is provided with a guide contour surface in a circular array. The lower side of the movable part 20 is symmetrically provided with two push blocks 30, and the lower end of the push block 30 slides in contact with the upper part of the guide ring 27.

[0041] Preferred options are shown in the appendix. Figure 7 A stepper motor 26 is installed on the lower side of the interior of the decomposition cylinder 15. The output end of the stepper motor 26 is connected to the circular plate 25. A heater 22 is provided on the lower outer wall of the limiting cover 16. A fan 23 is installed on the middle outer wall of the decomposition cylinder 15.

[0042] Preferred options are shown in the appendix. Figure 4 Appendix Figure 5 The placement plate 17 is provided with a plurality of through holes 35, the through holes 35 are connected to the interior of the ventilated block 18, and the ventilated block 18 is provided with a plurality of spray holes 36 on both sides.

[0043] Preferred options are shown in the appendix. Figure 10 Appendix Figure 11The placement plate 17 has several vertically sliding push rods 37 inside, and a sliding groove 38 inside. A counterweight 39 is radially sliding inside the sliding groove 38. The upper part of the counterweight 39 has an inclined structure. The upper end of the push rod 37 is connected to the middle of the V-shaped vent 19, and the lower end of the push rod 37 slides in contact with the upper inclined surface of the counterweight 39. The upper inclined surface of the counterweight 39 has several guide protrusions 41 spaced apart. An elastic element 40 is connected between one end of the sliding groove 38 and one end of the counterweight 39. A slider 42 is slidably provided at the other end of the sliding groove 38. A connecting member 43 is rotatably connected to one side of the top block 21 at the lower end of the slider 42. One end of the connecting member 43 is rotatably connected to the lower end of the slider 42, and the other end of the connecting member 43 is rotatably connected to one side of the top block 21.

[0044] Specific usage of this invention: First, open the cover plate 11 of the analyzer body 10, place the block sample to be tested on the ventilated support of the sample carrier assembly, so that the sample is above the inverted V-shaped vent 19, and then close the cover plate 11 to create a relatively sealed decomposition environment for the analyzer body 10.

[0045] In the initial stage of operation, the gas supply component is activated, and the fan 23 transports the gas inside the analyzer body 10 to the decomposition control mechanism. The heater 22 heats the gas at a low temperature. The low-temperature hot gas is transported upward through the through hole 35 to the inside of the permeable block 18, and then guided and sprayed out to both sides of the sample carrier assembly through the nozzle 36 connected to the through hole 35. It then enters between two adjacent inverted V-shaped permeable elements 19 and permeates upward along the inverted V-shaped permeable elements 19, contacting the bottom and sides of the sample. This stage allows the sample to gradually heat up under low temperature conditions, promoting the slow release of internal moisture and volatile components, while gradually softening the blocky sample from a solid state at room temperature to avoid instantaneous charring of the outer layer when directly entering the high-temperature decomposition zone.

[0046] Subsequently, heater 22 increases the heating temperature, and the gas supply component continuously delivers high-temperature hot gas to the sample carrier component. The high-temperature hot gas continues to be guided to the area around the sample through through hole 35 and nozzle 36, and then passes upward through the inverted V-shaped vent 19, so that the upper, side and lower parts of the sample are heated simultaneously, thereby improving the overall preheating uniformity.

[0047] Next, the drive assembly starts, and the stepper motor 26 drives the circular plate 25 to rotate. The circular plate 25 drives the movable part 20 in the control assembly to rotate circumferentially. During the rotation of the movable part 20, the push block 30 located on its outer side slides into contact with the guide contour surface at the upper end of the guide ring 27 in the lifting guide assembly. Since the guide contour surface is continuously undulating along the circumferential direction, the push block 30 synchronously generates axial displacement during the circumferential movement, thereby driving the movable part 20 to reciprocate along the axial direction.

[0048] When the movable part 20 moves upward axially, multiple top blocks 21 move upward synchronously and slide in conjunction with the sample carrier assembly, causing the placement plate 17 and the sample to tilt, lift, and partially roll. At the same time, the top blocks 21 drive the slider 42 to move through the connector 43, and the slider 42 further drives the counterweight 39 to move radially outward.

[0049] During the radial movement of the counterweight 39, its inclined guide surface slides into contact with the lower end of the push rod 37, pushing the push rod 37 vertically upward. This raises the middle of the inverted V-shaped vent 19, causing the sample to move to both sides and gradually disperse. Furthermore, multiple guide protrusions 41 on the inclined guide surface periodically act on the push rod 37 during its relative movement, causing the inverted V-shaped vent 19 to vibrate continuously, thus dispersing the sample and reducing sample accumulation and localized heat concentration.

[0050] Simultaneously, the upward movement of the movable part 20 drives the sleeve 33 to move upward synchronously. The sleeve 33 is threadedly engaged with the rotating shaft 31, thereby driving the rotating shaft 31 to rotate. The rotation of the rotating shaft 31 further drives the prying part 34 to rotate, prying the sample that is already tilted or upright, causing the sample to flip, roll, or slightly shift, so that the side that was originally underheated continues to be exposed to the high temperature environment, further improving the overall heating uniformity and preventing coking on one side.

[0051] As the temperature continued to rise, the sample gradually entered the high-temperature complete decomposition stage. Under the combined effects of high temperature and oxygen supply, the internal structure of the sample was fully decomposed, and sulfur, nitrogen, and chlorine elements were converted into their corresponding gaseous compounds, including sulfur dioxide, nitrogen oxides, and hydrogen chloride gas.

[0052] The gases generated by decomposition are promptly discharged through the gas extraction component and enter the purification mechanism 44 for impurity filtration and condensation separation. They are then transported to the corresponding detection module within the detector 12 for analysis and detection. Finally, the control system calculates and outputs the sulfur, nitrogen, and chlorine content results based on the detection signals and displays them on the display screen 14.

[0053] The collar 32 is used to confine the rotating shaft 31 within the circular plate 25 to prevent axial movement of the rotating shaft 31, while ensuring that it can still rotate under the action of the sleeve 33 when it revolves with the circular plate 25. When the counterweight 39 moves radially outward, it compresses the elastic element 40. After the external force is released, it is reset under the elastic force of the elastic element 40, thereby driving the shaking dispersion component to return to its initial state.

[0054] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism, comprising an analyzer body (10), wherein the analyzer body (10) is provided with a detector (12) and a decomposition control mechanism, characterized in that, Also includes: The sample carrier assembly, disposed within the decomposition control mechanism, is used to carry the sample to be tested; A gas-guiding and supplying component is disposed below the sample-carrying component and is connected to the heating component. The gas-guiding and supplying component is used to guide the heated gas flow to the sample carried on the sample-carrying component. A control component is disposed below the sample carrier component and is connected to the drive component for transmission. The control component is used to drive the sample carrier component and the sample to rotate circumferentially. A lifting guide assembly is disposed outside the control assembly and fixed inside the disassembly control mechanism. The lifting guide assembly has a guide surface that is continuously undulating along the circumferential direction. During the circumferential rotation, the control assembly slides and engages with the guide surface to drive the control assembly to reciprocate along the axial direction. A gas export component, connecting the decomposition control mechanism and the detector (12), is used to deliver the decomposition generated gas to the detector (12).

2. The integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism according to claim 1, characterized in that: The sample carrier assembly includes a placement plate (17) and a breathable support member disposed on the placement plate (17). The breathable support member is used to support the block sample and allow the heating airflow to pass through. The breathable support member is a plurality of breathable blocks (18) spaced apart along the placement plate (17). An inverted V-shaped breathable member (19) is provided between two adjacent breathable blocks (18).

3. An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism according to claim 2, characterized in that: The air supply component includes a through hole (35) disposed inside the sample carrier component and a nozzle (36) communicating with the through hole (35), the nozzle (36) being disposed facing both sides of the sample carrier component.

4. An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism according to claim 2, characterized in that: The control component includes a movable part (20) and a plurality of top blocks (21) disposed on the upper side of the movable part (20). The top blocks (21) are slidably engaged with the sample carrier component to push the sample to tilt or flip when the movable part (20) is raised or lowered.

5. An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism according to claim 1, characterized in that: The driving component includes a stepper motor (26) and a circular plate (25) connected to the output end of the stepper motor (26). The circular plate (25) is used to drive the control component to rotate circumferentially.

6. An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism according to claim 1, characterized in that: The lifting guide assembly includes a fixed guide ring (27), the upper end of which is provided with a guide contour surface that is continuously undulating along the circumferential direction, and the control assembly is provided with a push block (30) that slides in contact with the guide contour surface.

7. An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism according to claim 4, characterized in that: The movable part (20) is provided with a toggle assembly, which drives the toggle piece (34) to rotate during the axial movement of the movable part (20) so as to flip the sample.

8. An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism according to claim 7, characterized in that: The actuating assembly includes a rotating shaft (31) and a sleeve (33) threadedly engaged with the rotating shaft (31). The sleeve (33) drives the rotating shaft (31) to rotate when the movable part (20) moves axially.

9. An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism according to claim 4, characterized in that: The placement plate (17) is provided with a shaking dispersion component. The shaking dispersion component includes a plurality of vertically sliding push rods (37) and a counterweight (39) that slides with the push rods (37). The upper end of the push rod (37) is connected to the V-shaped ventilator (19). An inclined guide surface is formed on the counterweight (39). The lower end of the push rod (37) slides with the inclined guide surface. A plurality of guide protrusions (41) are spaced apart on the inclined guide surface to drive the V-shaped ventilator (19) to generate periodic shaking.

10. An integrated sulfur, nitrogen, and chlorine elemental analyzer based on a decomposition control mechanism according to claim 9, characterized in that: The shaking dispersion component also includes a slider (42) and a connector (43). The slider (42) is rotatably connected to the top block (21) through the connector (43) so as to drive the counterweight (39) to move radially when the top block (21) is raised or lowered.

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