A combustion apparatus for soil organic carbon

Abstract

The application discloses a kind of combustion determination instrument of soil organic carbon, including combustion bin containing combustion cavity, combustion cavity is connected with detection cavity;Stirring assembly, including multiple stirring parts, driving gear, multiple driven gears and motor;Motor is set on combustion bin, driving gear and multiple driven gears are respectively set on the connecting shaft of each stirring part, the stirring part of driving gear is connected with the output shaft of motor, multiple driven gears are engaged with driving gear;Heating assembly is set in combustion bin;Gas pushing assembly includes movable plate and first power component;Movable plate is set in detection cavity, and first power component is drivenly connected with movable plate;Detection module is set in detection cavity.Soil sample is stirred, to make soil constantly tumble, to improve the heating uniformity rate and volatilization efficiency of soil sample;In addition, volatile gas in combustion cavity can be concentrated and quickly discharged into detection cavity, and detection module is used for detecting volatile gas content.

Description

Technical Field

[0001] This invention relates to the technical field of soil organic carbon detection, and more particularly to a soil organic carbon combustion analyzer. Background Technology

[0002] A soil organic carbon combustion analyzer is an instrument used to determine the organic carbon content of soil. By burning a soil sample at high temperature, organic matter is burned into carbon dioxide and water. By measuring the amount of carbon dioxide produced, the soil organic carbon content can be calculated, which is used to assess soil fertility and quality.

[0003] When soil samples are heated and tested, large amounts of soil samples are difficult to heat evenly, resulting in soil organic carbon not being fully converted into carbon dioxide. Furthermore, the soil organic carbon content cannot be detected in a timely and accurate manner when soil samples are heated. Summary of the Invention

[0004] To overcome the shortcomings of existing technical solutions, this invention provides a soil organic carbon combustion analyzer.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0006] A combustion analyzer for soil organic carbon, the combustion analyzer comprising:

[0007] The combustion chamber contains a combustion cavity that is connected to a detection chamber; the combustion cavity has an inlet and an outlet; the detection chamber has an outlet.

[0008] A stirring assembly is disposed in the combustion chamber. The stirring assembly includes multiple stirring parts, a driving gear, multiple driven gears, and a motor. The motor is disposed on the combustion chamber. The driving gear and the multiple driven gears are respectively sleeved on the connecting shafts of the stirring parts. The stirring part sleeved on the driving gear is connected to the output shaft of the motor. The multiple driven gears mesh with the driving gear.

[0009] A heating assembly, disposed in the combustion chamber, is used for heating;

[0010] A gas pushing assembly, comprising a movable plate and a first power assembly; the movable plate is disposed in the detection chamber, and the first power assembly is drivenly connected to the movable plate for driving the movable plate to rise and fall;

[0011] A detection module is disposed in the detection cavity.

[0012] As a preferred technical solution of the present invention, a sorting device is connected to a combustion chamber. The sorting device includes a support base and a sorting platform. The sorting platform is disposed on the top of the support base and has a cutting cavity and a discharge cavity. The bottom surface of the cutting cavity has multiple first discharge holes and second discharge holes. Each first discharge hole is connected to the inlet, and each second discharge hole is connected to the discharge cavity. The outer diameter of each first discharge hole is smaller than the outer diameter of the second discharge hole. A cutting device is disposed in the cutting cavity. The cutting device includes a cutting blade, a first power component, and a second rotating shaft. The second rotating shaft is parallel to the length of the cutting cavity. The cutting blade is disposed on the outside of the second rotating shaft. The output shaft of the first power component is drivenly connected to the second rotating shaft to drive the second rotating shaft to rotate circumferentially.

[0013] As a preferred embodiment of the present invention, the cutting cavity is inclined, and the cutting blade extends along the length and circumference of the second rotation axis.

[0014] As a preferred embodiment of the present invention, the combustion tester further includes a conveying device, which is disposed below each of the first discharge holes and is used to convey soil to the inlet. The conveying device includes a conveyor belt, a second power component, and two rotating gears. Each of the rotating gears is rotatably disposed on the support base, and the inner side of the conveyor belt is wrapped around the outer side of each of the rotating gears. The output shaft of the second power component is drivenly connected to any one of the rotating gears and is used to drive the rotating gear connected thereto to rotate.

[0015] A portion of the conveyor belt extends into the feed inlet, or the conveyor belt extends above the feed inlet.

[0016] As a preferred embodiment of the present invention, the combustion measuring instrument further includes a discharge device for discharging the burned soil waste.

[0017] As a preferred technical solution of the present invention, the discharge device includes a discharge plate and a tilting power assembly. The discharge plate is disposed in the combustion chamber and located below the inlet. A first guide member for guiding the soil sample into the discharge plate is provided in the inlet.

[0018] The flipping power component is connected to the discharge plate drive and is used to drive the discharge plate to flip so that the burned soil sample waste is discharged through the discharge port.

[0019] As a preferred technical solution of the present invention, the flipping power assembly includes a rack, a driven gear, and a cylinder. The driven gear is disposed on the outer wall of the feeding tray. The rack is vertically arranged and some of its teeth mesh with some of the tooth edges of the driven gear. The output shaft of the cylinder is drivenly connected to the rack to drive the rack to move up and down.

[0020] As a preferred technical solution of the present invention, a limiting part is provided on the cavity wall of the combustion chamber, which is used to limit the rotation range of the discharge plate when the discharge plate rotates to the point where its back side abuts against the limiting part.

[0021] As a preferred embodiment of the present invention, a sealing door is provided in both the inlet and the outlet for opening or closing the inlet and the outlet.

[0022] As a preferred technical solution of the present invention, the bottom of the sorting table is provided with a second guide and a third guide that are respectively connected to the first discharge hole and the second discharge hole.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The motor drives the stirring part equipped with the active gear to rotate. When the active gear rotates, it synchronously drives the two driven gears to rotate. The rotation of the two driven gears causes the stirring part equipped with the two driven gears to stir the soil sample, so that the soil sample is constantly tumbling, thereby improving the heating uniformity and volatilization efficiency of the soil sample. The first power component drives the movable plate to move upward, so that the volatile gas in the combustion chamber can be concentrated and quickly discharged into the detection chamber, where the detection module is used to detect the volatile gas content. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is an overall structural diagram of an embodiment of the present invention.

[0027] Figure 2 yes Figure 1 A magnified view of point A in the image.

[0028] Figure 3 yes Figure 1 A magnified view of point B in the image.

[0029] Numbers in the diagram

[0030] 1. Combustion chamber; 11. Feed inlet; 12. Discharge outlet; 13. Combustion cavity; 14. Detection cavity; 141. Gas outlet;

[0031] 2. Sorting device; 21. Support base; 22. Sorting table; 221. Cutting chamber; 222. First discharge port; 223. Second discharge port; 23. Second guide; 24. Third guide;

[0032] 3. Cutting device; 31. Cutting blade; 32. Second power unit; 33. Second rotating shaft;

[0033] 4. Conveying device; 41. Conveyor belt; 42. Rotating gear;

[0034] 5. Discharge device; 51. Discharge tray; 52. Tilting power assembly; 521. Rack; 522. Driven component; 53. First guide component.

[0035] 6. Stirring assembly; 61. Stirring section; 62. Driving gear; 63. Driven gear;

[0036] 7. Gas pushing assembly; 71. Movable plate; 72. First power assembly;

[0037] 8. Adjustable seat;

[0038] 9. Detection module. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0041] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0042] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0043] The following describes in detail the specific structure of a combustion analyzer for soil sample organic carbon provided by an embodiment of the present invention, according to the appendix. Figure 1-3 As shown, the combustion tester has a specific structure including a combustion chamber 1, a stirring assembly 6, a heating assembly, a gas pushing assembly 7, and a detection module 9.

[0044] The combustion chamber 1 contains a combustion chamber 13, which is connected to the detection chamber 14. The combustion chamber 13 has a feed inlet 11 and a discharge outlet 12 that are connected to it. The detection chamber 14 has an air outlet 141.

[0045] Specifically, the soil sample to be tested is fed into the combustion chamber 1 through the inlet 11. Then, the combustion chamber 1 is heated to above 900°C so that the organic carbon in the soil sample is oxidized into carbon dioxide. Then, the carbon dioxide generated during the combustion of the soil sample is absorbed. Finally, the burned soil sample is discharged out of the combustion chamber 13 through the outlet 12.

[0046] It is understood that, in this embodiment of the invention, the inlet 11 is located on the side of the combustion chamber 13, and the outlet 12 is located at the bottom of the combustion chamber 13. Thus, when the soil sample after the combustion test is completed, it falls into the outlet 12 and is subsequently discharged.

[0047] The stirring assembly 6 is disposed in the combustion chamber. The stirring assembly 6 includes multiple stirring parts 61, a driving gear 62, multiple driven gears 63 and a motor. The motor is disposed on the combustion chamber. The driving gear 62 and multiple driven gears 63 are respectively sleeved on the connecting shaft of each stirring part 61. The stirring part 61 sleeved on the driving gear 62 is connected to the output shaft of the motor. The multiple driven gears 63 mesh with the driving gear 62.

[0048] Specifically, to improve the volatilization efficiency of organic matter in soil samples and ensure thorough heating during soil sample heating, a stirring section 61 (with a first stirring section in the middle, moving first) equipped with a drive gear 62 is driven by the output shaft of a motor to rotate circumferentially during soil sample heating. This allows the entire first stirring section to stir the soil sample transported to the combustion chamber, thereby achieving uniform heating of the soil sample. Simultaneously, since the drive gear 62 rotates in the same direction as the stirring section 61, it synchronously drives two driven gears 63 to rotate. The rotation of the two driven gears 63 causes the two driven gears 63 to rotate. The mixing section 61 (with a second mixing section and a third mixing section on both sides, both of which are driven) mixes the soil sample. Because there are three mixing sections, the soil sample can be thoroughly agitated, and the degree of tumbling of the soil sample can be increased, causing it to tumble continuously, thereby improving the uniformity of heating and volatilization efficiency. Furthermore, the heights of the first, second, and third mixing sections from the bottom of the combustion chamber can be set as a first height, a second height, and a third height, respectively. Based on the height of the first mixing section, the first height is smaller than the second and third heights, and the mixing diameter of the first mixing section is larger than that of the second and third mixing sections, further increasing the degree of tumbling of the soil sample.

[0049] The heating element is located in the combustion chamber and is used to heat the soil sample that is delivered to the combustion chamber.

[0050] The gas pushing assembly 7 includes a movable plate 71 and a first power assembly 72; the movable plate 71 is disposed in the detection chamber 14, and the first power assembly 72 is drivenly connected to the movable plate 71 to drive the movable plate 71 to rise and fall. The detection module 9 is disposed in the detection chamber 14.

[0051] Specifically, in order to concentrate the detection of gases produced after the combustion of soil samples, when the volatile gases generated after the soil sample is heated are in the combustion chamber, the first power component 72 drives the movable plate 71 to move upward. Since the detection chamber 14 is under negative pressure at this time, the volatile gases in the combustion chamber are quickly discharged into the detection chamber 14. Subsequently, the detection module 9 set in the detection chamber 14 is used to detect the volatile gases. Thus, the volatile gases after combustion can be concentrated and discharged into the detection chamber 14 for detection by the detection module 9.

[0052] In the above embodiment, the air inside the detection chamber 14 can be drawn away by the air extraction device to create a negative pressure.

[0053] It should be noted that if the volatile gas in the combustion chamber is discharged to the detection chamber 14 before being discharged, the detection chamber 14 is under negative pressure and the first power component 72 drives the movable plate 71 to move upward, so that the volatile gas in the detection chamber 14 is discharged through the gas outlet 141, thus circulating and playing a role in efficiently detecting the organic carbon content of the soil sample.

[0054] It should also be noted that a detection device for detecting organic carbon in soil samples is provided in the combustion chamber 13. For example, the detection device can be understood as an absorption gas analyzer or elemental analyzer to detect organic carbon in soil samples. Such detection devices can accurately measure organic carbon in soil samples by collecting and analyzing carbon dioxide (CO2) generated after the soil sample is burned. The specific type is not limited here.

[0055] For example, during detection, the detection device reads the measured CO2 content and calculates the organic carbon concentration, such as using the following formula:

[0056] Organic carbon concentration (expressed as carbon, in units such as mg / kg or g / kg) = (measured CO2 amount / sample mass) × conversion factor;

[0057] The conversion factor mentioned above converts the amount of CO2 into the amount of carbon, and is usually a fixed value (e.g., 1 mol of CO2 corresponds to 12g of carbon). The conversion factor is determined based on the proportion of CO2 produced when each carbon atom burns; therefore, the conversion factor can be understood as the mass of carbon corresponding to each gram of CO2. When calculating the mass of organic carbon, the measured amount of CO2 is converted to the mass of organic carbon by multiplying by the conversion factor. For example, if the measured amount of CO2 is X grams and the conversion factor is Y (usually 3.67), then the mass of organic carbon is X × Y grams.

[0058] In summary, when calculating the organic carbon concentration of a soil sample, since organic carbon concentration refers to the amount of organic carbon contained per unit weight of soil sample, it is necessary to divide the calculated organic carbon mass by the sample mass (i.e., the weight of the soil sample) to obtain the soil sample organic carbon concentration.

[0059] Soil organic carbon concentration (expressed as carbon, in units such as mg / kg or g / kg) = (measured CO2 amount × conversion factor) / soil sample mass.

[0060] The first power assembly 72 of this embodiment includes a lead screw, a moving block, and a motor. When the motor is started, it drives the lead screw to rotate. The nut on the moving block engages with the lead screw thread, and the nut moves up and down as the lead screw rotates. The lifting speed and lifting distance of the seat can be precisely controlled by simply controlling the speed and direction of the motor.

[0061] In summary, the stirring section 61, equipped with the drive gear 62, is driven to rotate by the motor. When the drive gear 62 rotates, it synchronously drives the two driven gears 63 to rotate. The rotation of the two driven gears 63 causes the stirring section 61, equipped with the two driven gears 63, to stir the soil sample, making the soil sample tumble continuously, thereby improving the uniformity of heating and volatilization efficiency of the soil sample. The first power assembly 72 drives the movable plate 71 to move upward, so that the volatile gases in the combustion chamber can be concentrated and quickly discharged into the detection chamber 14, where the detection module 9 is used to detect the content of volatile gases.

[0062] according to Figure 2 As shown, the sorting device 2 is connected to the combustion chamber 1. The sorting device 2 includes a support base 21 and a sorting table 22. The sorting table 22 is located on the top of the support base 21. A cutting cavity 221 and a material discharge cavity are formed on the sorting table 22. A plurality of first discharge holes 222 and second discharge holes 223 are passed through the bottom surface of the cutting cavity 221. Each first discharge hole 222 is connected to the inlet 11, and each second discharge hole 223 is connected to the material discharge cavity. The outer diameter of each first discharge hole 222 is smaller than the outer diameter of the second discharge hole 223.

[0063] Specifically, to prevent large soil particles or some large waste materials from being transported to the combustion chamber 13 for combustion and affecting the test results, the soil samples to be tested need to be concentrated in the cutting chamber 221 in the sorting table 22 for cutting before being transported to the combustion chamber 13. This allows large soil samples to be cut into smaller soil samples. The smaller soil samples then fall out of the cutting chamber 221 through multiple first discharge holes 222 at the bottom. Some large soil samples that need to be cut multiple times cannot fall out through the multiple first discharge holes 222 and are finally transported to the combustion chamber 13 through the inlet 11.

[0064] It should be noted that, since the outer diameter of each first discharge hole 222 is smaller than that of the second discharge hole 223, only small soil samples can fall through the multiple first discharge holes 222. The second discharge hole 223 is located on the right side of the cutting chamber 221. For some large soil samples or hard waste that are difficult to cut, the cutting device 3 pushes such large soil samples along the direction of the second discharge hole 223 during the cutting process until such large soil samples can fall through the second discharge hole 223 and fall outside the cutting chamber 221 for centralized processing in subsequent processes. This setting achieves a method that does not require manual sorting, thereby improving the processing efficiency of large soil samples or hard waste.

[0065] For example, when a portion of the soil sample pile to be tested is put into the cutting chamber 221, some small soil samples can be discharged through the first discharge hole 222 at the bottom. For some large soil samples, the cutting device 3 is activated to cut the soil sample pile to be tested. In the cutting process, in addition to cutting large soil samples into small soil samples, some large soil samples that are difficult to cut can also be pushed along the direction of the second discharge hole 223 until such large soil samples can fall through the second discharge hole 223.

[0066] according to Figure 2 As shown, the cutting device 3 is disposed in the cutting cavity 221. The cutting device 3 includes a cutting blade 31, a second power component 32 and a second rotating shaft 33. The second rotating shaft 33 is arranged parallel to the length of the cutting cavity 221. The cutting blade 31 is disposed on the outside of the second rotating shaft 33. The output shaft of the second power component 32 is drivenly connected to the second rotating shaft 33 to drive the second rotating shaft 33 to rotate circumferentially.

[0067] Specifically, when the cutting device 3 cuts the pile of soil samples to be tested, the second power component 32 drives the entire second rotating shaft 33 to rotate circumferentially. When the second rotating shaft 33 rotates, the cutting blade 31 set on the second rotating shaft 33 rotates synchronously in the same direction as the rotation of the second rotating shaft 33. At this time, the pile of soil samples to be tested is cut by the high-speed rotating cutting blade 31, so that the large soil sample is cut into a small soil sample.

[0068] It should be noted that since the extension length of the cutting blade 31 is the same as or nearly equal to the length of the cutting cavity 221, it ensures that the soil sample pile to be tested in the cutting cavity 221 can be cut by the cutting blade 31.

[0069] It should also be noted that the two ends of the second rotating shaft 33 are rotatably connected to the opposite side walls of the cutting cavity 221, and the second power assembly 32 is driven to one end of the second rotating shaft 33 that extends outside the sorting table 22, so as to avoid the second power assembly 32 being built into the cutting cavity 221.

[0070] It is understood that the second power component 32 in this embodiment of the invention is a motor. Specifically, its working principle is that when current passes through the stator winding, a magnetic field is generated around the stator that interacts with the rotor winding, causing the rotor to be subjected to torque and begin to rotate. According to the principle of Lorentz force, current will be subjected to force in the magnetic field, thereby generating torque, causing the rotor to start rotating, that is, driving the output shaft to rotate.

[0071] In a further embodiment, the cutting cavity 221 is inclined.

[0072] In summary, before being transported to the combustion chamber 13, all soil samples to be tested are concentrated in the cutting chamber 221 within the sorting table 22. The second power component 32 drives the cutting blade 31 to rotate at high speed, so that large soil samples are cut into small soil samples. The small soil samples can fall through multiple first discharge holes 222 and be transported to the combustion chamber 13 for combustion testing. Large soil samples or hard waste are pushed by the cutting blade 31 to the second discharge hole 223 and fall into the relevant processing area, thus chopping large soil samples into small soil samples and improving the accuracy of soil sample testing.

[0073] Specifically, to ensure that the soil sample pile to be tested is cut into small soil samples by multiple cuts, and to prevent some soil samples from being directly pushed into the second discharge hole 223 by the cutting blade 31 without undergoing an appropriate number of cuts, the soil sample pile to be tested is cut into the inclined cutting cavity 221. At the same time, when the cutting blade 31, which is rotating at high speed, pushes the soil sample pile to be tested, the soil sample pile that is not pushed into the second discharge hole 223 slides down along the inclined direction of the cutting cavity 221. This design prevents the soil sample pile to be tested that has not undergone multiple cuts from being directly pushed into the second discharge hole 223, thereby improving the processing efficiency of the soil sample pile to be tested.

[0074] according to Figure 2 As shown, in a further embodiment, since the cutting blade 31 extends along the length and circumference of the second rotation axis 33, specifically, the pitch of the cutting blade 31 extending in the direction that pushes the soil sample pile to be tested to the second discharge hole 223 gradually decreases. Because the pitch of the cutting blade 31 gradually decreases, its tangential velocity gradually increases. Therefore, when the cutting blade 31 rotates, it compresses the soil sample pile to be tested and generates a strong thrust, thus moving the soil sample pile to be tested.

[0075] It is understood that the cutting blade 31 in this embodiment of the invention is blade-shaped. Such a cutting blade 31 can improve cutting speed and efficiency, and at the same time, it can reduce the cutting force of the cutting blade 31 during cutting.

[0076] In some specific embodiments, the combustion tester also includes a conveying device 4, which is disposed below each of the first discharge holes 222 and is used to convey soil samples to the inlet 11.

[0077] Specifically, in order to transport the soil sample pile to be cut into small soil samples to the combustion chamber 13 without manual handling, after the soil sample pile to be tested is cut into small soil samples by the cutting blade 31, it falls onto the conveying device 4 through multiple first discharge holes 222 at the bottom of the cutting chamber 221. Subsequently, under the guidance of the conveying device 4, they are all finally transported into the combustion chamber 13.

[0078] according to Figure 2 As shown, specifically, the conveying device 4 includes a conveyor belt 41, a second power assembly, and two rotating gears 42; each rotating gear 42 is rotatably mounted on the support base 21, the inner side of the conveyor belt 41 is wrapped around the outer side of each rotating gear 42, and the output shaft of the second power assembly is driven to drive any one of the rotating gears 42 to rotate; part of the conveyor belt 41 extends into the feed inlet 11 or the conveyor belt extends above the feed inlet.

[0079] Specifically, since the inner side of the conveyor belt 41 is wrapped around the outer side of the two rotating gears 42, when one rotating gear 42 rotates, the friction between it and the conveyor belt 41 causes the conveyor belt 41 to start moving. The inner side of the conveyor belt 41 is in contact with the other rotating gear 42, so the second power component is used to drive the rotating gear 42 to rotate, thereby making the conveyor belt 41 operate. When the conveyor belt 41 is operating, it synchronously drives the rotating gear 42 to start rotating. This configuration achieves synchronous rotation of the two rotating gears 42. Small soil samples falling from the first discharge hole 222 will fall onto the outer surface of the conveyor belt 41. Since part of the conveyor belt 41 extends into the feed inlet 11, when the conveyor belt 41 is operating, it can transport small soil samples to the feed inlet 11, so as to transport a large number of small soil samples to the combustion chamber 13 for testing. This configuration improves the transportation efficiency of the soil sample pile to be tested.

[0080] It is understood that the second power component in this embodiment of the invention is a motor, and its specific working principle is similar to that of the second power component 32 described above, so it will not be described in detail here.

[0081] In some specific embodiments, the combustion tester also includes a discharge device 5 for discharging the waste from the burned soil sample. Specifically, since the waste from the soil sample pile to be tested may affect the combustion process of the subsequent soil sample pile and the accuracy and stability of the test if it is not discharged in time after the combustion test, the waste from the soil sample pile to be tested is dropped into the discharge port 12 through the discharge device 5 after the combustion test, so that the waste from the soil sample pile is discharged through the discharge port 12, thereby avoiding the accumulation of waste inside the combustion chamber 13 and causing inaccurate test results.

[0082] according to Figure 3 As shown, specifically, the discharge device 5 of this embodiment includes a discharge plate 51 and a tilting power assembly 52. ​​The discharge plate 51 is disposed in the combustion chamber 13 and located below the inlet 11. The tilting power assembly 52 is driven to the discharge plate 51 and is used to drive the discharge plate 51 to tilt so that the burned soil sample waste is discharged through the outlet 12.

[0083] Specifically, when a large number of small soil samples enter through the inlet 11, they are transported to the discharge tray 51 for combustion testing under the guidance of the guide. After the small soil samples in the combustion chamber 13 have completed the combustion test, the entire discharge tray 51 is rotated to 180° by the flipping power assembly 52, causing the entire discharge tray 51 to flip. At this time, a large amount of soil sample waste falls into the outlet 12. Since the outlet 12 is located at the bottom of the combustion chamber 13, the fallen soil sample waste can be discharged out of the combustion chamber 13 through the outlet 12. Subsequently, the flipping power assembly 52 drives the entire discharge tray 51 to continue rotating to 180°, so that the flipped discharge tray 51 is reset. At this time, the next batch of small soil samples to be tested can be transported to the discharge tray 51 for combustion and testing.

[0084] according to Figure 3 As shown, in a further embodiment, a first guide 53 is provided in the feed inlet 11 to guide the soil sample into the discharge tray 51. After a large number of small soil samples pass through the feed inlet 11, they are concentrated and guided into the discharge tray 51 by the first guide 53.

[0085] The flipping power assembly 52 of this embodiment includes a rack 521, a follower 522 and a cylinder. The follower 522 is disposed on the outer side wall of the feeding tray 51. The rack 521 is vertically arranged and some of its teeth mesh with some of the tooth edges of the follower 522. The output shaft of the cylinder is driven to connect with the rack 521 and is used to drive the rack 521 to move up and down.

[0086] Specifically, the cylinder can drive the rack 521 to move up and down through its output shaft. Since some of the teeth of the rack 521 mesh with some of the tooth edges of the driven member 522, the teeth of the rack 521 push the tooth edges of the driven member 522 to make the driven member 522 rotate circumferentially. Since the driven member 522 is fixedly installed on the discharge plate 51, when the driven member 522 rotates, it can drive the discharge plate 51 to flip or reset, thereby realizing the rapid discharge of soil sample waste.

[0087] For example, the output shaft of the cylinder pushes the rack 521 to move upward, thereby driving the driven member 522 to rotate until the entire discharge tray 51 flips over. At this time, the soil sample waste that has completed the combustion test falls out of the combustion chamber 13 through the discharge port 12. Conversely, when the output shaft of the air rod is retracted, it pulls the rack 521 to move downward, thereby driving the driven member 522 to rotate until the entire discharge tray 51 is reset, and then the next batch of small soil samples to be tested can be transported.

[0088] It is understood that the cylinder in this embodiment of the invention is connected to a compressed air system via an air pipe. When compressed air from the system is fed into the cylinder, the pressure inside the cylinder increases. A piston connected to an output shaft is installed inside the cylinder. When compressed air is fed into the cylinder, the piston is subjected to pressure and moves. Furthermore, the cylinder is equipped with valves or switches to control the inflow and outflow of compressed air, thereby controlling the movement of the piston. By controlling the inflow and outflow of compressed air, the working rhythm, speed, and position of the cylinder can be controlled.

[0089] In some specific embodiments, a limiting part is provided on the cavity wall of the combustion chamber 13 to limit the rotation range of the discharge plate 51 when the discharge plate 51 rotates to the point where its back side abuts against the limiting part.

[0090] Specifically, to ensure that the discharge tray 51 can be horizontally oriented and to prevent it from tilting and causing the small soil sample to be tested to be unable to be transported into the discharge tray 51, the discharge tray 51 is prevented from rotating further when the flipping power assembly 52 rotates it to abut against the limiting part. For example, when discharging soil sample waste, the discharge tray 51 is rotated by the flipping power assembly 52 until the back of the discharge tray 51 abuts against the bottom of the limiting part and it can no longer rotate. At this time, the receiving cavity of the discharge tray 51 faces the bottom surface so that the soil sample waste falls off. When transporting the small soil sample to be tested, the discharge tray 51 is rotated by the flipping power assembly 52 until the back of the discharge tray 51 abuts against the top of the limiting part and it can no longer rotate. At this time, the discharge tray 51 faces the top surface, and the small soil sample to be tested can then be transported into the discharge tray 51.

[0091] In some specific embodiments, the bottom of the flipping power assembly 52 is provided with a lifting seat 8 and a third power assembly that is driven to the lifting seat 8. Specifically, when it is necessary to stir the soil sample, the third power assembly drives the lifting seat 8 to move upward, so as to push the entire flipping power assembly 52 to a height that can be stirred by each stirring part 61; when the soil sample has been burned and needs to be discharged, the third power assembly drives the lifting seat 8 to move downward until the discharge plate 51 cannot collide with each stirring part 61 when it is flipped.

[0092] It is understood that the third power component in this embodiment of the invention includes a lead screw, a motor, and a movable block movably disposed on the lead screw, for driving the tilting power component 52 to rise and fall.

[0093] In some specific embodiments, both the inlet 11 and the outlet 12 are provided with a sealing door for opening or closing the inlet 11 and the outlet 12.

[0094] Specifically, to isolate the combustion chamber 13 from the outside air, after the small soil sample to be tested is conveyed into the discharge tray 51 through the inlet 11, the inlet 11 and the outlet 12 are closed by a sealing door. This arrangement ensures the detection of the combustion reaction and avoids interference from external factors, such as airflow or humidity changes, on the test results. If it is necessary to discharge soil sample waste, the sealing door can be opened to discharge the soil sample waste.

[0095] Understandably, an electric motor and control system are used to drive the closed door. For example, the electric motor generates power to drive the closed door to open and close, based on instructions issued by the control system. The electric motor transmits power to the closed door through a transmission device (such as a chain, gears, etc.), enabling the automatic opening or closing of the inlet 11 and outlet 12 through the closed door.

[0096] In some specific embodiments, the bottom of the sorting table 22 is provided with a second guide 23 and a third guide 24 that are respectively connected to the first discharge hole 222 and the second discharge hole 223. With this configuration, small soil samples to be tested falling from multiple first discharge holes 222 are concentrated and fall onto the conveyor belt 41 of the conveying device 4 through the second guide 23, while large soil samples or hard waste falling from the second discharge hole 223 are concentrated and fall into the relevant processing area through the third guide 24. Through the second guide 23 and the third guide 24, small soil samples and large soil samples are respectively concentrated and transported to the corresponding areas, thereby achieving the purpose of smooth transportation.

[0097] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A soil organic carbon combustion analyzer, characterized in that, The combustion testing instrument includes: The combustion chamber contains a combustion cavity that is connected to a detection chamber; the combustion cavity has an inlet and an outlet; the detection chamber has an outlet. A stirring assembly is disposed in the combustion chamber. The stirring assembly includes multiple stirring parts, a driving gear, multiple driven gears, and a motor. The motor is disposed on the combustion chamber. The driving gear and the multiple driven gears are respectively sleeved on the connecting shafts of the stirring parts. The stirring part sleeved on the driving gear is connected to the output shaft of the motor. The multiple driven gears mesh with the driving gear. A heating assembly, disposed in the combustion chamber, is used for heating; A gas pushing assembly, comprising a movable plate and a first power assembly; the movable plate is disposed in the detection chamber, and the first power assembly is drivenly connected to the movable plate for driving the movable plate to rise and fall; The detection module is disposed in the detection cavity; The combustion analyzer also includes: The sorting device is connected to the combustion chamber and includes a support base and a sorting platform. The sorting platform is located on top of the support base and has a cutting cavity and a discharge cavity. The bottom surface of the cutting cavity has multiple first discharge holes and second discharge holes. Each first discharge hole is connected to the inlet, and each second discharge hole is connected to the discharge cavity. The outer diameter of each first discharge hole is smaller than the outer diameter of the second discharge hole. A cutting device is disposed in a cutting cavity. The cutting device includes a cutting blade, a second power component, and a second rotating shaft. The second rotating shaft is arranged parallel to the length of the cutting cavity. The cutting blade is disposed on the outside of the second rotating shaft. The output shaft of the second power component is drivenly connected to the second rotating shaft to drive the second rotating shaft to rotate circumferentially. The combustion tester also includes a conveying device, which is disposed below each of the first discharge holes and is used to convey soil to the inlet. The conveying device includes a conveyor belt, a second power component, and two rotating gears; each of the rotating gears is rotatably mounted on the support base, the inner side of the conveyor belt is wrapped around the outer side of each of the rotating gears, and the output shaft of the second power component is driven to drive any one of the rotating gears to rotate. A portion of the conveyor belt extends into the feed inlet, or the conveyor belt extends above the feed inlet.

2. The soil organic carbon combustion analyzer according to claim 1, characterized in that, The cutting cavity is inclined, and the cutting blade extends along the length and circumference of the second rotation axis.

3. The soil organic carbon combustion analyzer according to claim 1, characterized in that, The combustion tester also includes a discharge device for discharging the burned soil waste.

4. The soil organic carbon combustion analyzer according to claim 3, characterized in that, The discharge device includes a discharge pan and a tilting power assembly. The discharge pan is disposed in the combustion chamber and located below the inlet. A first guide is provided in the inlet for guiding the soil sample into the discharge pan. The flipping power component is connected to the discharge plate drive and is used to drive the discharge plate to flip so that the burned soil sample waste is discharged through the discharge port.

5. The soil organic carbon combustion analyzer according to claim 4, characterized in that, The tilting power assembly includes a rack, a driven gear, and a cylinder. The driven gear is disposed on the outer wall of the feeding tray. The rack is vertically arranged and some of its teeth mesh with some of the tooth edges of the driven gear. The output shaft of the cylinder is drivenly connected to the rack to drive the rack to move up and down.

6. The soil organic carbon combustion analyzer according to claim 4, characterized in that, A limiting part is provided on the wall of the combustion chamber to limit the rotation range of the discharge plate when the discharge plate rotates to the point where its back side abuts against the limiting part.

7. The soil organic carbon combustion analyzer according to claim 1, characterized in that, Both the inlet and the outlet are equipped with sealing doors for opening or closing the inlet and the outlet.

8. The soil organic carbon combustion analyzer according to claim 1, characterized in that, The bottom of the sorting table is provided with a second guide and a third guide that are respectively connected to the first discharge hole and the second discharge hole.

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