Elemental analyzer for detecting organic carbon content of mangrove forest precipitate and detection method thereof

Abstract

The invention discloses an elemental analyzer for detecting the organic carbon content of mangrove forest sediment and a detection method thereof, the elemental analyzer comprises a detection box, a box door is hinged to the lower part of the left side of the front surface of the detection box, a controller is arranged on the right side of the front surface of the detection box, and a combustor is mounted on the left side of the detection box; and the interior of the detection box is fixedly connected with a first partition plate. According to the elemental analyzer for detecting the organic carbon content of the mangrove forest sediment and the detection method of the elemental analyzer, the impeller is driven to rotate by utilizing the potential energy of gas flow, and a stirring plate rotates and stirs a sample on a movable table under the action of a rotating rod and a first bevel gear set, so that the sample can be sufficiently combusted by a combustor; and after the detection is completed, the hydraulic cylinder drives the movable table to descend, and the movable table rotates and inclines towards the right side under the action of the rack and the driven gear, so that the combusted sample on the movable table can be automatically poured into the collection box to be collected, and the workload of later-stage testers is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of element analyzers, and in particular to an element analyzer for detecting the amount of organic carbon in mangrove sediments and a detection method thereof. Background Art

[0002] Mangroves grow in tropical and subtropical coastal intertidal zones and are typical ecotones of coastal wetlands. They have rich carbon reserves, and the organic carbon in mangrove sediments comes from many sources, including dead branches and leaves of mangrove vegetation, root secretions, animal remains, microbial activities, etc. These organic substances undergo a series of biochemical processes in the sediments, such as decomposition, transformation, and burial, and eventually form organic carbon. The amount of organic carbon in mangrove sediments needs to be tested using an elemental analyzer; Defect 1: When testing samples, existing element analyzers may easily lead to incomplete combustion of substances, thus affecting the analysis accuracy; In order to solve the above-mentioned defect one, the prior art one (application number: 202322778297.1, Chinese patent with application date of 2023-10-17) discloses a high-precision element analyzer. The support plate can be pushed out from the feeding port by the cooperation of the lifting component and the pushing component, so as to carry out cleaning after feeding or combustion. The material is placed on the combustion table, and then the lifting component is used to push the material to the bottom of the burner output end for high-temperature burning. At the same time, the first motor drives the combustion table to rotate, and then drives the material to rotate, so that the end of the burner can fully burn the material on multiple sides. At the same time, the through holes distributed on the combustion cover facilitate the circulation of oxygen, and further fully burn the material, so as to ensure the analysis accuracy. During the burning process, the principle of high-temperature gas upflow is used to send the burned gas into the analysis chamber through the collection tube and the sealing component to prevent gas leakage, so as to further ensure the analysis accuracy. Defect 2: Most of the existing element analyzers have low analysis accuracy, which easily leads to errors in the analysis process. Moreover, after the combustion of raw materials, the combustion products are not easy to clean up. After the analysis is completed, most element analyzers discharge the gas into the air, which will pollute the surrounding air. In order to solve the above-mentioned defect 2, prior art 2 (application number: 202022820988.X, Chinese patent with application date of 2020-11-30) discloses a multifunctional fully automatic computer full-element analyzer. Through the joint action of the combustion chamber, the detection chamber and the liquefaction chamber, the detected raw materials can be detected and liquefied. Through the setting of the electric heating tube and the crucible, the detected raw materials can be fully burned. Through the joint action of the gas collecting hood, the gas guide pipe, the diversion pipe and the gas outlet pipe, the gas generated after combustion can be collected, and then the collected gas can be introduced into the detection unit for detection; through the gas separation component and the gas detection The setting of the device can separate the gas and then detect it, so as to prevent a part of the gas from affecting the detection and thus reducing the accuracy of the detection result. The setting of the concave plate and the damper can play a role in shock absorption and buffering for the box body, so as to prevent excessive vibration during the movement of the device and damage to the device. Through the joint action of the air inlet pipe, the gas collecting pipe, the condenser pipe, the water tank, the water pump, the water outlet pipe and the circulation pipe, the detected gas can be liquefied to prevent the device from directly discharging the gas and thus polluting the air. The setting of the water tank can collect the liquefied gas, and after the collection is completed, it is discharged uniformly. The existing technology is to place the sample in a combustion chamber for combustion to generate gas, and then detect the amount of organic carbon in the gas through a detection unit. However, since most of the samples are piled up in the combustion chamber, the internal samples cannot be fully burned during combustion, which in turn affects the subsequent analysis accuracy. At the same time, after the detection is completed, the samples in the combustion chamber need to be manually cleaned out by the detection personnel, which increases the workload of the detection personnel and is inconvenient to use.

[0003] Therefore, we proposed an element analyzer and a detection method for detecting the organic carbon content in mangrove sediments in order to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide an elemental analyzer and a detection method for detecting the organic carbon content of mangrove sediments, so as to solve the problem raised in the above-mentioned background technology that most of the samples are piled up and placed in the combustion chamber, so that the internal samples cannot be fully burned during combustion, thereby affecting the subsequent analysis accuracy; at the same time, after the detection is completed, the samples in the combustion chamber need to be manually cleaned out by the detection personnel, which will increase the workload of the detection personnel and is inconvenient to use.

[0005] To achieve the above object, the present invention provides the following technical solutions: an element analyzer for detecting organic carbon content in mangrove sediments and a detection method thereof, comprising a detection box, a box door is hinged at the lower left side of the front of the detection box, a controller is arranged at the right side of the front of the detection box, and a burner is installed at the left side of the detection box; A first partition plate is fixedly connected to the interior of the detection box, a combustion cover is fixed to the left side of the interior of the detection box, and a hydraulic cylinder is installed on the left side of the bottom of the inner wall of the detection box; A movable platform is fixed to the output end of the hydraulic cylinder, a thermal conductivity detector is arranged above the right side of the detection box, a first delivery pump is installed on the top of the detection box, and both ends of the delivery pump are connected to the combustion cover and the right side of the first partition plate inside the detection box through the first ventilation pipe; The combustion cover is connected to a stirring rod inside, and a rotating rod is arranged above the combustion cover. The left end of the rotating rod is connected to the top of the stirring rod through a first bevel gear set, and an impeller is fixedly mounted on the outer side of the right end of the rotating rod. The bottom of the movable platform is hinged to the output end of the hydraulic cylinder through a shaft rod, and a driven gear is sleeved and fixed on the outer side of the front end of the shaft rod; A rack is fixedly connected to the lower part of the left side of the inner wall of the detection box, and a collection box is connected to the bottom of the inner wall of the detection box located on the right side of the hydraulic cylinder.

[0006] Preferably, the diameter of the movable platform is smaller than the diameter of the combustion hood, and the outer side of the movable platform is sealed and slidably connected to the inner wall of the combustion hood. The rack is horizontally placed in a "T" shape, and the rack and the driven gear are meshingly connected.

[0007] Preferably, the right end of the rotating rod passes through the interior of the first partition plate, and the right end of the rotating rod is connected to the inner wall of the detection box by a bearing, the impeller is arranged at a lower position of one end of the first ventilation pipe, and the stirring rod is rotatably connected to the combustion cover.

[0008] Preferably, linkage rods are symmetrically connected to the lower part of the movable platform, and cams are evenly spaced and fixed on the outer sides of the two linkage rods, the opposite ends of the two linkage rods are connected to the outer sides of the shaft rods through a second bevel gear set, brackets are evenly spaced and fixed to the lower surface of the movable platform, and striking blocks are penetrated and connected to the lower surface of the brackets, and reset springs are installed between the striking blocks and the inner sides of the brackets.

[0009] Preferably, the two linkage rod bearings are connected to the bottom of the movable platform, the positions of the cam and the striking block correspond one to one, and the outer side of the cam fits with the bottom of the striking block, the striking block is arranged in a "T" shape, and the striking block and the bracket are slidably connected.

[0010] Preferably, a second partition plate is fixed inside the collection box, and a sliding block is fixedly connected to the bottom of the collection box, and a sliding groove is provided at the bottom of the inner wall of the detection box.

[0011] Preferably, a pipe is fixed inside the detection box below the thermal conductivity detector, and nozzles are installed at equal intervals on the bottom of the pipe, a liquid storage box is fixed on the left side of the top of the detection box, a connecting pipe is provided on the outer side of the combustion cover, a second delivery pump is installed on the right side of the detection box, and second ventilation pipes are fixedly connected to both ends of the second delivery pump.

[0012] Preferably, the connecting pipe is spirally sleeved on the outside of the combustion cover, and the two ends of the connecting pipe are fixedly connected to the bottom of the liquid storage box and the left end of the pipeline respectively, and the opposite ends of the two second ventilation pipes extend into the interior of the detection box and are located above the thermal conductivity detector and below the pipeline respectively.

[0013] An element analyzer for detecting the amount of organic carbon in mangrove sediments, and a detection method for detecting the amount of organic carbon in mangrove sediments using the element analyzer are also disclosed, comprising the following steps: S1. First, place the mangrove sediment sample ground into powder on a movable table, and drive the movable table upward through a hydraulic cylinder so that it is locked and sealed inside the combustion cover; S2, starting the burner to burn the sample on the movable table and generate gas, and at the same time starting the first delivery pump to deliver the gas in the combustion hood to the top of the thermal conductivity detector through the first ventilation pipe, and quantitatively analyzing the gas through the thermal conductivity detector to obtain the amount of organic carbon in the sample; S3, then start the second delivery pump to deliver the detected gas to the bottom of the pipeline through the second ventilation pipe, and start multiple nozzles to spray the adsorbent on the gas to purify it, and finally the purified gas is discharged from the exhaust pipe; S4. Finally, the movable table is driven downward by the hydraulic cylinder to separate it from the combustion cover. At the same time, the movable table is rotated and tilted to the right, so that the sample after combustion on its surface can be automatically poured into the collection box. Then the test personnel can open the box door, pull out the collection box, and clean up the sample and waste liquid after combustion inside.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the element analyzer for detecting organic carbon content in mangrove sediment and the detection method thereof adopt a new structural design, and the specific contents thereof are as follows: (1) The movable table is driven upward by the hydraulic cylinder so that the sample is pushed to the output end of the burner and burned at high temperature. At the same time, the generated gas is transported to the bottom of the thermal conductivity detector by the first ventilation pipe. The gas is quantitatively analyzed by the thermal conductivity detector to obtain the amount of organic carbon in the sample; Furthermore, when the gas enters the bottom of the thermal conductivity detector, the potential energy of the gas flow is used to drive the impeller to rotate, so that the rotating rod drives the stirring rod to rotate using the first bevel gear set, thereby stirring the sample on the movable table, so that the burner can fully burn the sample, thereby ensuring the accuracy of the organic carbon content detection result; Furthermore, when the test is completed, the hydraulic cylinder drives the movable table to descend, and uses the function of the rack and the driven gear to make the movable table rotate and tilt to the right, so that the burned sample on the movable table can be automatically poured into the collection box for collection, reducing the workload of the later test personnel; (2) When the movable table rotates and tilts to the right, the shaft uses the second bevel gear set to drive the two linkage rods to rotate, causing the cam to rotate and reciprocate to squeeze the striking block, causing it to move and strike the bottom of the movable table, thereby causing the movable table to vibrate, which can clean the residual sample on the surface of the movable table into the collection box, avoiding residual sample on the movable table and affecting the subsequent test results; (3) After the gas is detected, it is transported to the bottom of the pipeline through the second ventilation pipe, and the adsorbent is sprayed on the gas through the nozzle to purify it, thereby preventing harmful gases from being directly discharged and causing harm to people around; Furthermore, the waste heat generated by combustion can be used to heat the internal adsorbent of the connecting tube, so that the heated adsorbent has a better gas purification effect, and then the waste liquid will flow into the right side of the collection box for collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main cross-sectional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the detection box of the present invention; Figure 3 It is a schematic diagram of the side section structure of the collecting box of the present invention; Figure 4 This is a schematic diagram of the tilting structure of the movable platform of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the connecting pipe of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the stirring rod and the rotating rod of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the linkage rod, cam and bracket of the present invention; Figure 8 It is a side view structural diagram of the impeller and stirring rod of the present invention; Fig. 9 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Fig.10 For the present invention Figure 2 Enlarged structural diagram at B in the middle.

[0016] In the figure: 1. detection box; 2. combustion hood; 3. movable table; 4. hydraulic cylinder; 5. burner; 6. first partition plate; 7. first ventilation pipe; 8. thermal conductivity detector; 9. rotating rod; 10. stirring rod; 11. impeller; 12. collecting box; 13. second partition plate; 14. second ventilation pipe; 15. exhaust pipe; 16. connecting pipe; 17. pipeline; 18. driven gear; 19. linkage rod; 20. shaft rod; 21. cam; 22. bracket; 23. striking block; 24. reset spring; 25. rack; 26. slider; 27. slide groove; 28. liquid storage box. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 10 , the present invention provides the following technical solutions: an element analyzer for detecting the amount of organic carbon in mangrove sediments and a detection method thereof; Embodiment 1: In order to solve the problem in the prior art that most of the samples are piled up in the combustion chamber, so that during combustion, the internal samples cannot be fully burned, which in turn affects the subsequent analysis accuracy. At the same time, after the detection is completed, the samples in the combustion chamber need to be manually cleaned out by the detection personnel, which will increase the workload of the detection personnel and inconvenience in use. Therefore, the following solution is disclosed, and specific reference is made to Figure 1-Figure 4 , Figure 6 and Figure 8 As shown, it includes a detection box 1, a box door is hinged at the lower left side of the front of the detection box 1, a controller is arranged on the right side of the front of the detection box 1, and a burner 5 is installed on the left side of the detection box 1; a first partition plate 6 is fixedly connected to the inside of the detection box 1, a combustion cover 2 is fixed to the left side of the inside of the detection box 1, and a hydraulic cylinder 4 is installed on the left side of the bottom of the inner wall of the detection box 1; A movable platform 3 is fixed to the output end of the hydraulic cylinder 4, a thermal conductivity detector 8 is arranged above the right side of the inside of the detection box 1, a first delivery pump is installed on the top of the detection box 1, and both ends of the delivery pump are respectively connected with the combustion hood 2 and the inside of the detection box 1 on the right side of the first partition plate 6 through the first ventilation pipe 7; a stirring rod 10 is connected to the inside of the combustion hood 2, and a rotating rod 9 is arranged above the inside of the combustion hood 2, the left end of the rotating rod 9 and the top of the stirring rod 10 are connected by a first bevel gear set, and an impeller 11 is fixed to the outer side of the right end of the rotating rod 9, the right end of the rotating rod 9 passes through the inside of the first partition plate 6, and the right end of the rotating rod 9 is connected to the inner wall of the detection box 1 by a bearing, the impeller 11 is arranged at the lower position of one end of the first ventilation pipe 7, and there is a space between the stirring rod 10 and the combustion hood 2. Rotational connection; the bottom of the movable platform 3 is hinged to the output end of the hydraulic cylinder 4 through the shaft rod 20, and a torsion spring is installed at the connection position between the shaft end of the shaft rod 20 and the hydraulic cylinder 4, and a driven gear 18 is fixedly sleeved on the outer side of the front end of the shaft rod 20. The diameter of the movable platform 3 is smaller than the diameter of the combustion hood 2, and the outer side of the movable platform 3 and the inner wall of the combustion hood 2 are sealed and slidably connected. The rack 25 is horizontally placed in a "T" shape, and the rack 25 and the driven gear 18 are meshed. The rack 25 is fixedly connected to the lower left side of the inner wall of the detection box 1, and the bottom of the inner wall of the detection box 1 is located on the right side of the hydraulic cylinder 4 and is connected to the collection box 12. The second partition plate 13 is fixed inside the collection box 12, and the bottom of the collection box 12 is fixedly connected to a slider 26, and the bottom of the inner wall of the detection box 1 is provided with a slide groove 27; First, the experimenter sets the parameters of the element analyzer according to the analysis requirements. Then the tester opens the box door and places the mangrove sediment sample ground into powder on the movable table 3, and starts the hydraulic cylinder 4. The hydraulic cylinder 4 drives the movable table 3 to rise, so that the sample is pushed to the output end position of the burner 5 and burned at high temperature. Then, the generated gas is transported to the upper position of the thermal conductivity detector 8 through the first delivery pump and the first ventilation pipe 7, and the gas is quantitatively analyzed by the thermal conductivity detector 8 to obtain the amount of organic carbon in the sample. At the same time, the potential energy generated by the gas flow can drive the impeller 11 to rotate, so that the rotating rod 9 drives the stirring rod 10 to rotate using the first bevel gear set, and then the sample on the movable table 3 can be stirred, so that the burner 5 can fully burn the sample. Burning ensures the accuracy of the organic carbon detection result. Then, the gas is discharged from the exhaust pipe 15 after being purified, and then when the sample is tested, the movable table 3 is driven down by the hydraulic cylinder 4 to separate the movable table 3 from the combustion cover 2, and the rack 25 is used to drive the driven gear 18 to rotate, so that the driven gear 18 drives the shaft 20 to rotate, and then the movable table 3 is rotated and tilted to the right, so that the burned sample on the movable table 3 can be automatically poured into the collection box 12 for collection, reducing the workload of the later test personnel. Finally, the experimenter can pull the collection box 12 to pull it out of the test box 1, and pour out the waste and waste liquid inside, and then insert the collection box 12 into the slide groove 27 inside the test box 1 through the slider 26 at the bottom to complete the installation of the collection box 12.

[0019] Embodiment 2: Different from Embodiment 1, this embodiment uses the striking block 23 to strike the movable table 3 back and forth, so that the residual sample on the surface of the movable table 3 can be cleaned into the collecting box 12. For details, refer to Figure 1 , Figure 7 , Fig. 9 and Fig.10 As shown, linkage rods 19 are symmetrically connected to the bottom of the movable platform 3, and cams 21 are sleeved and fixed on the outer sides of the two linkage rods 19 at equal intervals, and the opposite ends of the two linkage rods 19 are connected to the outer sides of the shaft rod 20 through a second bevel gear set, and brackets 22 are fixed to the lower surface of the movable platform 3 at equal intervals, and a striking block 23 is penetrated and connected to the lower surface of the bracket 22, and a return spring 24 is installed between the striking block 23 and the inner side of the bracket 22, and the two linkage rods 19 are connected to the bottom of the movable platform 3 with bearings, and the positions of the cams 21 and the striking blocks 23 correspond one to one, and the outer sides of the cams 21 fit the bottom of the striking blocks 23, and the striking blocks 23 are arranged in a "T" shape, and the striking blocks 23 and the bracket 22 are connected in a sliding manner; When the movable platform 3 rotates and tilts to the right, the shaft 20 uses the second bevel gear set to drive the two linkage rods 19 to rotate, so that the cam 21 rotates and reciprocatingly squeezes the striking block 23, causing it to move and hit the bottom of the movable platform 3. Then, when the cam 21 no longer squeezes the striking block 23, the striking block 23 is reset under the elastic force of the reset spring 24, and the above operation is repeated, so that the striking block 23 reciprocates and hits the bottom of the movable platform 3, thereby causing the movable platform 3 to vibrate, which can clean the residual sample on the surface of the movable platform 3 into the collection box 12, avoiding residual sample on the movable platform and affecting subsequent detection results.

[0020] Embodiment 3: Different from Embodiment 2, this embodiment uses a nozzle to spray the adsorbent on the gas, which can purify the gas and prevent the harmful gas from being directly discharged and causing harm to the surrounding personnel. For details, refer to Figure 1 , Figure 2 and Figure 5 As shown, a pipe 17 is fixed inside the detection box 1 below the thermal conductivity detector 8, and nozzles are installed at equal intervals at the bottom of the pipe 17. A liquid storage box 28 is fixed on the left side of the top of the detection box 1. A connecting pipe 16 is sleeved on the outer side of the combustion cover 2. A second delivery pump is installed on the right side of the detection box 1, and both ends of the second delivery pump are fixedly connected to a second ventilation pipe 14. The connecting pipe 16 is sleeved on the outer side of the combustion cover 2 in a spiral shape, and the two ends of the connecting pipe 16 are respectively fixedly connected to the bottom of the liquid storage box 28 and the left end of the pipe 17, and the opposite ends of the two second ventilation pipes 14 extend into the detection box 1 above the thermal conductivity detector 8 and below the pipe 17. After the gas is detected, the gas is transported to the bottom of the pipeline 17 through the second delivery pump and the second ventilation pipe 14, and the adsorbent is sprayed on the gas through the nozzle to purify it, so as to avoid the direct discharge of harmful gases and cause harm to the surrounding personnel. Then the adsorbent in the liquid storage box 28 will enter the connecting pipe 16, and the waste heat generated by the combustion can be used to heat the internal adsorbent of the connecting pipe 16. At the same time, the heated adsorbent enters the pipeline 17, so that the heated adsorbent has a better purification effect on the gas. After that, the waste liquid will flow into the right side of the collection box 12 for collection.

[0021] An element analyzer for detecting the amount of organic carbon in mangrove sediments, and a detection method for detecting the amount of organic carbon in mangrove sediments using the element analyzer are also disclosed, comprising the following steps: S1. First, the mangrove sediment sample ground into powder is placed on the movable table 3, and the movable table 3 is driven upward by the hydraulic cylinder 4 so that it is locked and sealed inside the combustion cover 2; S2, start the burner 5 to burn the sample on the movable table 3 and generate gas, and start the first delivery pump to deliver the gas in the combustion cover 2 to the top of the thermal conductivity detector 8 through the first ventilation pipe 7, and perform quantitative analysis on the gas through the thermal conductivity detector 8 to obtain the amount of organic carbon in the sample; S3, then start the second delivery pump to deliver the detected gas to the bottom of the pipeline 17 through the second ventilation pipe 14, and start multiple nozzles to spray the adsorbent on the gas to purify it, and finally the purified gas is discharged from the exhaust pipe 15; S4. Finally, the movable platform 3 is driven downward by the hydraulic cylinder 4 to separate it from the combustion cover 2. At the same time, the movable platform 3 is rotated and tilted to the right, so that the sample after combustion on its surface can be automatically poured into the collection box 12. Then the test personnel can open the box door, pull out the collection box 12, and clean up the sample and waste liquid after combustion inside.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An elemental analyzer for detecting organic carbon content in mangrove sediments, comprising a detection box (1), a box door being hingedly connected at the lower left side of the front of the detection box (1), a controller being arranged at the right side of the front of the detection box (1), and a burner (5) being installed at the left side of the detection box (1); A first partition plate (6) is fixedly connected to the interior of the detection box (1), a combustion cover (2) is fixed to the left side of the interior of the detection box (1), and a hydraulic cylinder (4) is installed on the left side of the bottom of the inner wall of the detection box (1); Features: A movable platform (3) is fixed to the output end of the hydraulic cylinder (4); a thermal conductivity detector (8) is arranged above the right side of the detection box (1); a first delivery pump is installed on the top of the detection box (1); and both ends of the delivery pump are connected to the combustion hood (2) and the right side of the first partition plate (6) inside the detection box (1) through a first ventilation pipe (7); The combustion cover (2) is internally connected to a stirring rod (10), and a rotating rod (9) is arranged above the combustion cover (2), the left end of the rotating rod (9) and the top of the stirring rod (10) are transmission-connected via a first bevel gear set, and an impeller (11) is sleeved and fixed on the outer side of the right end of the rotating rod (9); The bottom of the movable platform (3) is hinged to the output end of the hydraulic cylinder (4) via a shaft (20), and a driven gear (18) is sleeved and fixed on the outer side of the front end of the shaft (20); A rack (25) is fixedly connected to the lower portion of the left side of the inner wall of the detection box (1), and a collection box (12) is connected to the bottom of the inner wall of the detection box (1) located on the right side of the hydraulic cylinder (4).

2. The element analyzer for detecting organic carbon content in mangrove sediments and the detection method thereof according to claim 1, characterized in that: The diameter of the movable platform (3) is smaller than the diameter of the combustion hood (2), and the outer side of the movable platform (3) is in sealed sliding connection with the inner wall of the combustion hood (2). The rack (25) is arranged in a horizontal "T" shape, and the rack (25) and the driven gear (18) are in meshing connection.

3. The element analyzer for detecting organic carbon content in mangrove sediments and the detection method thereof according to claim 1, characterized in that: The right end of the rotating rod (9) passes through the interior of the first partition plate (6), and the right end of the rotating rod (9) is connected to the inner wall of the detection box (1) by a bearing. The impeller (11) is arranged below one end of the first ventilation pipe (7), and the stirring rod (10) is rotatably connected to the combustion cover (2).

4. The element analyzer for detecting organic carbon content in mangrove sediments and the detection method thereof according to claim 1, characterized in that: Linkage rods (19) are symmetrically connected to the lower side of the movable platform (3), and cams (21) are sleeved and fixed at equal intervals on the outer sides of the two linkage rods (19), and the opposite ends of the two linkage rods (19) are connected to the outer sides of the shaft rod (20) through a second bevel gear set. Brackets (22) are fixed at equal intervals on the lower surface of the movable platform (3), and a striking block (23) is connected through the lower surface of the bracket (22), and a return spring (24) is installed between the striking block (23) and the inner side of the bracket (22).

5. The element analyzer for detecting organic carbon content in mangrove sediments and the detection method thereof according to claim 4, characterized in that: The two linkage rods (19) are bearing-connected to the bottom of the movable platform (3); the positions of the cam (21) and the striking block (23) correspond one to one, and the outer side of the cam (21) fits the bottom of the striking block (23); the striking block (23) is arranged in a "T" shape, and the striking block (23) and the bracket (22) are slidably connected.

6. The element analyzer for detecting organic carbon content in mangrove sediments and the detection method thereof according to claim 1, characterized in that: A second partition plate (13) is fixed inside the collection box (12), a sliding block (26) is fixedly connected to the bottom of the collection box (12), and a sliding groove (27) is provided at the bottom of the inner wall of the detection box (1).

7. The element analyzer for detecting organic carbon content in mangrove sediments and the detection method thereof according to claim 1, characterized in that: A pipe (17) is fixed inside the detection box (1) below the thermal conductivity detector (8), and nozzles are installed at equal intervals at the bottom of the pipe (17). A liquid storage box (28) is fixed on the left side of the top of the detection box (1). A connecting pipe (16) is sleeved on the outer side of the combustion cover (2). A second delivery pump is installed on the right side of the detection box (1), and both ends of the second delivery pump are fixedly connected to a second ventilation pipe (14).

8. The element analyzer for detecting organic carbon content in mangrove sediments and the detection method thereof according to claim 7, characterized in that: The connecting pipe (16) is spirally sleeved on the outside of the combustion cover (2), and the two ends of the connecting pipe (16) are respectively fixedly connected to the bottom of the liquid storage box (28) and the left end of the pipeline (17), and the opposite ends of the two second ventilation pipes (14) extend into the interior of the detection box (1) and are located above the thermal conductivity detector (8) and below the pipeline (17).

9. The element analyzer for detecting organic carbon content in mangrove sediments according to claim 1, characterized in that: Also disclosed is a method for detecting the amount of organic carbon in mangrove sediments using an element analyzer, comprising the following steps: S1. First, a mangrove sediment sample ground into powder is placed on a movable table (3), and the movable table (3) is driven upward by a hydraulic cylinder (4) so ​​that it is engaged and sealed inside the combustion cover (2); S2, starting the burner (5) to burn the sample on the movable table (3) and generate gas, and at the same time starting the first delivery pump to deliver the gas in the combustion cover (2) to the top of the thermal conductivity detector (8) through the first ventilation pipe (7), and quantitatively analyzing the gas through the thermal conductivity detector (8) to obtain the organic carbon content in the sample; S3, then starting the second delivery pump to deliver the detected gas to the bottom of the pipeline (17) through the second ventilation pipe (14), and starting multiple nozzles to spray the adsorbent on the gas to purify it, and finally the purified gas is discharged from the exhaust pipe (15); S4. Finally, the movable platform (3) is driven downward by the hydraulic cylinder (4) to separate it from the combustion cover (2). At the same time, the movable platform (3) is rotated and tilted to the right, so that the sample after combustion on its surface can be automatically poured into the collection box (12). Then, the test personnel can open the box door, pull out the collection box (12), and clean out the sample and waste liquid after combustion inside.

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