Combustion tester for soil organic carbon

Abstract

The invention discloses a soil organic carbon combustion tester which comprises a combustion bin with a combustion cavity, and the combustion cavity is communicated with a detection cavity; the stirring assembly comprises a plurality of stirring parts, a driving gear, a plurality of driven gears and a motor; the motor is arranged on the combustion bin, the driving gear and the driven gears are arranged on the connecting shafts of the stirring parts in a sleeving mode respectively, the stirring parts sleeved with the driving gear are connected with an output shaft of the motor, and the driven gears are meshed with the driving gear; the heating assembly is arranged in the combustion bin; the gas pushing assembly comprises a movable plate and a first power assembly; the movable plate is arranged in the detection cavity; the first power assembly is in driving connection with the movable plate; and the detection module is arranged in the detection cavity. The soil sample is stirred, so that the soil is continuously turned over, and the heating uniformity and the volatilization efficiency of the soil sample are improved; in addition, the volatile gas in the combustion cavity can be concentrated and quickly discharged into the detection cavity, and the detection module is used for detecting the content of the volatile gas.

Description

Technical Field

[0001] The invention relates to the technical field of soil organic carbon detection, and in particular to a combustion measuring instrument for soil organic carbon. Background Art

[0002] The combustion tester for soil organic carbon is an instrument used to measure the content of soil organic carbon. By burning the soil sample at high temperature, the 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 to evaluate soil fertility and quality.

[0003] When heating soil samples and testing them, it is difficult to heat a large amount of soil samples evenly, which results in the inability to convert all soil organic carbon into carbon dioxide. In addition, when heating the soil samples, the soil organic carbon content cannot be accurately tested in a timely manner. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art solutions, an embodiment of the present invention provides a soil organic carbon combustion measuring instrument.

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

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

[0007] A combustion chamber, wherein the combustion chamber has a combustion chamber, the combustion chamber is connected with the detection chamber; the combustion chamber has a material inlet and a material outlet; the detection chamber has an air outlet;

[0008] A stirring assembly, the stirring assembly is arranged in the combustion chamber, the stirring assembly comprises a plurality of stirring parts, a driving gear, a plurality of driven gears and a motor; the motor is arranged on the combustion chamber, the driving gear and the plurality of driven gears are respectively sleeved on the connecting shafts of the stirring parts, the stirring part sleeved with the driving gear is connected to the output shaft of the motor, and the plurality of driven gears are meshed with the driving gear;

[0009] A heating component, which is arranged in the combustion chamber and is used for heating;

[0010] A gas pushing assembly, the gas pushing assembly comprising a movable plate and a first power assembly; the movable plate is arranged in the detection chamber, and the first power assembly is drivingly connected to the movable plate to drive 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 provided, wherein the sorting device is connected to the combustion bin, and the sorting device comprises a supporting base and a sorting platform; the sorting platform is arranged on the top of the supporting base, and a cutting cavity and a blanking cavity are formed on the sorting platform; a bottom surface of the cutting cavity is penetrated by a plurality of first discharge holes and second discharge holes, each of the first discharge holes is connected to the feed port, and each of the second discharge holes is connected to the blanking cavity; an outer diameter of each of the first discharge holes is smaller than an outer diameter of the second discharge hole; a cutting device is provided in the cutting cavity, and the cutting device comprises a cutting blade, a first power assembly and a second rotating shaft, the second rotating shaft is arranged parallel to the length of the cutting cavity, the cutting blade is arranged on the outside of the second rotating shaft, and the output shaft of the first power assembly is drivingly connected to the second rotating shaft for driving the second rotating shaft to rotate in a circumferential direction.

[0013] As a preferred technical solution of the present invention, the cutting cavity is arranged obliquely, and the cutting blade extends along the length and circumference of the second rotating shaft.

[0014] As a preferred technical solution of the present invention, the combustion measuring instrument further includes a conveying device, which is arranged below each of the first discharge holes and is used to convey the soil to the feed port; the conveying device includes a conveyor belt, a second power assembly and two rotating gears; each of the rotating gears is rotatably arranged on the support base, the inner side of the conveyor belt is wound around the outer side of each of the rotating gears, and the output shaft of the second power assembly is drivingly connected to any one of the rotating gears, so as to drive the rotating gear connected thereto to rotate;

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

[0016] As a preferred technical solution of the present invention, the combustion measuring instrument also includes a discharge device for discharging the soil waste after combustion.

[0017] As a preferred technical solution of the present invention, the discharge device includes a discharge tray and a turning power assembly, the discharge tray is arranged in the combustion chamber and below the feed inlet, and a first guide member for guiding the soil sample into the discharge tray is arranged in the feed inlet;

[0018] The overturning power assembly is drivingly connected to the discharge tray and is used to drive the discharge tray to overturn 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 arranged on the outer wall of the discharge tray. The rack is vertically arranged and part of its teeth are meshed with part of the tooth edges of the driven gear. The output shaft of the cylinder is drivingly 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 portion is provided on the cavity wall of the combustion chamber, and when the discharge tray rotates until its back side abuts against the limiting portion, it is used to limit the rotation range of the discharge tray.

[0021] As a preferred technical solution of the present invention, closed doors are provided in the feed inlet and the discharge port for opening or closing the feed inlet and the discharge port.

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

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The stirring part with the driving gear is driven to rotate by the motor. When the driving gear rotates, the two driven gears are driven to rotate synchronously. The stirring part with the two driven gears is used to stir the soil sample through the rotation of the two driven gears, so that the soil sample is constantly tumbled, thereby improving the heating uniformity and volatilization efficiency of the soil sample; the movable plate is driven to move upward by the first power component, so that the volatile gas in the combustion chamber can be concentrated and quickly discharged into the detection chamber, and the detection module is used to detect the volatile gas content. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

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

[0027] Figure 2 yes Figure 1 A local enlarged view of point A in the figure.

[0028] Figure 3 yes Figure 1 A local enlarged view of point B in FIG.

[0029] Numbers in the figure

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

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

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

[0033] 4. conveying device; 41. conveyor belt; 42. rotating gear;

[0034] 5. Discharging device; 51. Discharging tray; 52. Turning power assembly; 521. Rack; 522. Follower; 53. First guide member.

[0035] 6. stirring assembly; 61. stirring part; 62. driving gear; 63. driven gear;

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

[0037] 8. Lifting seat;

[0038] 9. Detection module. DETAILED DESCRIPTION

[0039] 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 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.

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

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

[0042] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0043] The specific structure of a combustion measuring instrument for organic carbon in soil samples provided by an embodiment of the present invention is described in detail below. Figure 1-3 As shown in FIG, the specific structure of the combustion measuring instrument includes a combustion chamber 1, a stirring component 6, a heating component, a gas pushing component 7 and a detection module 9.

[0044] A combustion chamber 1 is provided in the combustion chamber 1 , and the combustion chamber 13 is connected to a detection chamber 14 . The combustion chamber 13 is penetrated by a material inlet 11 and a material outlet 12 which are connected thereto; and the detection chamber 14 is penetrated by an air outlet 141 .

[0045] Specifically, the soil sample to be tested is transported into the combustion chamber 1 through the feed port 11, and then the combustion chamber 1 is heated to above 900°C so that the organic carbon in the soil sample to be tested is oxidized into carbon dioxide. Subsequently, the carbon dioxide generated during the combustion of the soil sample to be tested is absorbed, and finally the burned soil sample is discharged out of the combustion chamber 13 through the discharge port 12.

[0046] It can be understood that the feed port 11 of the embodiment of the present invention is arranged at the side of the combustion chamber 13, and the discharge port 12 is arranged at the bottom of the combustion chamber 13. Thus, when the soil sample after the combustion detection is completed falls into the discharge port 12 and is then discharged.

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

[0048] Specifically, in order to improve the volatilization efficiency of organic matter in the soil sample, so that when the soil sample is heated, a sufficient heating effect can be achieved, for this purpose, when the soil sample is heated, the output shaft of the motor drives the stirring portion 61 (the middle is the first stirring portion, and the first stirring portion moves first) which is sleeved with the driving gear 62 to rotate along its circumferential direction, so that the entire first stirring portion stirs the soil sample transported to the combustion chamber, thereby achieving uniform heating of the soil sample; at the same time, since when the stirring portion 61 sleeved with the driving gear 62 rotates, the driving gear 62 rotates in the same direction of rotation, so when the driving gear 62 rotates, it synchronously drives the two driven gears 63 to rotate, and through the rotation of the two driven gears 63, the two driven gears 63 sleeved with the two driven gears 63 The stirring part 61 (with the second stirring part and the third stirring part on both sides, both of which are driven) stirs the soil sample; since three stirring parts are set, on the one hand, the soil sample can be fully stirred, and on the other hand, the tumbling degree of the soil sample can be increased, so that the soil sample is continuously tumbling, thereby improving the heating uniformity and volatilization efficiency of the soil sample; further, the heights of the first stirring part, the second stirring part and the third stirring part from the bottom of the combustion chamber can be respectively the first height, the second height and the third height, and taking the setting height of the first stirring part as the reference, the first height is smaller than the second height and the third height, and at the same time, the stirring diameter of the first stirring part is larger than the stirring diameters of the second stirring part and the third stirring part, so that the tumbling degree of the soil sample is increased.

[0049] The heating component is arranged in the combustion chamber and is used for heating the soil sample transported into the combustion chamber.

[0050] The gas push 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 drivingly 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 centrally detect the gas after the soil sample is burned, when the volatile gas generated by the soil sample after heating is in the combustion chamber, the movable plate 71 is driven to move upward by the first power component 72. Since the detection chamber 14 is in a negative pressure state at this time, the volatile gas in the combustion chamber is quickly discharged into the detection chamber 14. Subsequently, the detection module 9 arranged in the detection chamber 14 is used to perform detection on the volatile gas. As a result, the volatile gas after combustion can be centrally 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 sucked out by the suction device, thereby forming a negative pressure.

[0053] It should be noted that before the volatile gas in the combustion chamber is discharged into the detection chamber 14, since the detection chamber 14 is under negative pressure and the first power assembly 72 drives the movable plate 71 to move upward, the volatile gas in the detection chamber 14 is discharged through the gas outlet 141, thereby circulating, thereby achieving the effect of 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 an elemental analyzer to detect organic carbon in soil samples. Such a detection device can accurately measure the organic carbon in the soil sample by collecting and analyzing the carbon dioxide (CO2) generated after the combustion of the soil sample to determine the organic carbon in the soil sample. The specific type is not limited here.

[0055] For example, when the detection device is detecting, the detection device reads the measured CO2 content and calculates the organic carbon, such as using the following formula to calculate the concentration of organic carbon:

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

[0057] Among them, the above conversion factor is the amount of CO2 converted to the amount of carbon, which is usually a fixed value (for example, 1 mol CO2 corresponds to 12g 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 can be converted to the mass of organic carbon by multiplying it by the conversion factor. For example, if the measured amount of CO2 is X grams and the conversion factor is Y (usually 3.67), the mass of organic carbon is X×Y grams.

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

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

[0060] The first power assembly 72 of the embodiment of the present invention includes a screw rod, a moving block and a motor; when the motor is started, the screw rod is driven to rotate, and the nut on the moving block cooperates with the screw rod thread to move up and down as the screw rod rotates; the lifting speed and lifting distance of the seat body can be accurately controlled by simply controlling the speed and direction of the motor.

[0061] In summary, the stirring portion 61 on which the driving gear 62 is mounted is driven by the motor to rotate. When the driving gear 62 is rotating, the two driven gears 63 are synchronously driven to rotate. Through the rotation of the two driven gears 63, the stirring portion 61 on which the two driven gears 63 are mounted stirs the soil sample, so that the soil sample is continuously tumbled, thereby improving the heating uniformity and volatilization efficiency of the soil sample; the movable plate 71 is driven to move upward by the first power assembly 72, so that the volatile gas in the combustion chamber can be concentrated and quickly discharged into the detection chamber 14, and the detection module 9 is used to detect the volatile gas content.

[0062] according to Figure 2 As shown, the sorting device 2 is connected to the combustion bin 1, and the sorting device 2 includes a supporting base 21 and a sorting platform 22; the sorting platform 22 is arranged on the top of the supporting base 21, and a cutting cavity 221 and a blanking cavity are formed on the sorting platform 22, and a bottom surface of the cutting cavity 221 is penetrated by a plurality of first discharge holes 222 and second discharge holes 223, each first discharge hole 222 is connected to the feed port 11, and each second discharge hole 223 is connected to the blanking cavity; the outer diameter of each first discharge hole 222 is smaller than the outer diameter of the second discharge hole 223.

[0063] Specifically, in order to prevent large-particle soil samples or some large waste materials from being transported to the combustion chamber 13 for combustion, thereby affecting the test results; for this reason, before the soil samples to be tested are transported to the combustion chamber 13, they need to be concentrated in the cutting chamber 221 in the sorting table 22 for cutting, so that large soil samples can be cut into small soil samples, and then the small soil samples fall out of the cutting chamber 221 through the multiple first discharge holes 222 at the bottom, while some large soil samples that need to be cut multiple times cannot fall through the multiple first discharge holes 222 for the time being, and are finally transported to the combustion chamber 13 through the feed port 11.

[0064] It should be noted that, since the outer diameter of each first discharge hole 222 is smaller than the outer diameter 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 cavity 221. For some large soil samples or hard waste that are difficult to cut, the cutting device 3 pushes such large soil samples in 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 to the outside of the cutting cavity 221 and be centrally processed in subsequent processes. Thus, a method without manual sorting is realized to improve 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 started to cut the soil sample pile to be tested. During the cutting process, in addition to cutting the 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 arranged in the cutting chamber 221, and the cutting device 3 includes a cutting blade 31, a second power assembly 32 and a second rotating shaft 33. The second rotating shaft 33 is arranged parallel to the length of the cutting chamber 221, and the cutting blade 31 is arranged on the outside of the second rotating shaft 33. The output shaft of the second power assembly 32 is drivingly connected to the second rotating shaft 33, and is used to drive the second rotating shaft 33 to rotate in the circumferential direction.

[0067] Specifically, when the cutting device 3 is cutting the soil sample pile to be tested, the second power assembly 32 is used to drive the entire second rotating shaft 33 to rotate along its circumferential direction. When the second rotating shaft 33 is rotating, the cutting blade 31 arranged on the second rotating shaft 33 is synchronously driven to rotate along the rotation direction of the second rotating shaft 33. At this time, the soil sample pile 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 consistent with or substantially equal to the length of the cutting cavity 221 , it is ensured 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 respectively rotatably connected to the opposite side walls of the cutting chamber 221, and the second power component 32 is drivingly connected to one end of the second rotating shaft 33 that passes through the sorting table 22 to avoid the second power component 32 being built into the cutting chamber 221.

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

[0071] In a further embodiment, the cutting cavity 221 is arranged at an angle.

[0072] In summary, the soil samples to be tested are all concentrated in the cutting chamber 221 in the sorting table 22 before being transported to the combustion chamber 13. The second power assembly 32 drives the cutting blade 31 to rotate at high speed, so that the large soil samples are cut into small soil samples. The small soil samples can fall through the multiple first discharge holes 222 and be transported to the combustion chamber 13 for combustion detection. The 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. The large soil samples are chopped into small soil samples, thereby improving the accuracy of soil sample detection.

[0073] Specifically, in order to cut the pile of soil samples to be tested multiple times, thereby ensuring that the pile of soil samples to be tested can be cut into small soil samples, it is prevented that part of the pile of soil samples to be tested can be cut into small soil samples without being cut an appropriate number of times, and is directly pushed into the second discharge hole 223 by the cutting blade 31. Therefore, when the pile of soil samples to be tested falls into the inclined cutting cavity 221, at the same time, the cutting blade 31 rotating at high speed pushes the pile of soil samples to be tested, through the inclined cutting cavity 221, so that the pile of soil samples to be tested that has not been pushed into the second discharge hole 223 slides along the inclined direction of the cutting cavity 221. Thus, it is prevented that the pile of soil samples to be tested that has not been cut is directly pushed into the second discharge hole 223, thereby improving the processing efficiency of the pile of soil samples 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 rotating shaft 33, specifically, the pitch of the cutting blade 31 extending in the direction of pushing the soil sample pile to be tested to move to the second discharge hole 223 gradually decreases. Since the pitch of the cutting blade 31 gradually decreases, the speed of its tangent line gradually increases, so when the cutting blade 31 rotates, the soil sample pile to be tested is squeezed and a strong thrust is generated, thereby playing the role of moving the soil sample pile to be tested.

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

[0076] In some specific embodiments, the combustion measuring instrument further includes a conveying device 4 , which is disposed below each first discharge hole 222 and is used to convey the soil sample to the feed port 11 .

[0077] Specifically, in order to transport the cut small soil sample pile to the combustion chamber 13 to avoid manual transportation; for this purpose, when the soil sample pile to be tested is cut by the cutting blade 31 to form a small soil sample, it falls onto the conveying device 4 through the multiple first discharge holes 222 at the bottom of the cutting chamber 221, and then, under the guidance of the conveying device 4, it is finally transported to 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 arranged on the support base 21, the inner side of the conveyor belt 41 is wound around the outer side of each rotating gear 42, and the output shaft of the second power assembly is drivingly connected to any one of the rotating gears 42 to drive the rotating gear 42 connected thereto to rotate; a portion of the conveyor belt 41 extends into the feed port 11 or the conveyor belt extends above the feed port.

[0079] Specifically, since the inner side of the conveyor belt 41 is wound around the outer sides of the two rotating gears 42, when one rotating gear 42 rotates, the friction between it and the conveyor belt 41 drives the conveyor belt 41 to start moving, and fits with the other rotating gear 42 on the inner side of the conveyor belt 41. Therefore, the second power component is used to drive the rotating gear 42 to rotate, so that the conveyor belt 41 can operate. When the conveyor belt 41 is in operation, the rotating gear 42 is synchronously driven to start rotating. Thus, the synchronous rotation of the two rotating gears 42 is achieved. The small soil samples dropped from the first discharge hole 222 will fall onto the outer side of the conveyor belt 41. Since part of the conveyor belt 41 extends into the feed port 11, when the conveyor belt 41 is in operation, the small soil samples can be transported to the feed port 11, so that a large number of small soil samples can be transported to the combustion chamber 13 for detection. Thus, the transportation efficiency of the soil sample pile to be tested is improved.

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

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

[0082] according to Figure 3 As shown, specifically, the discharge device 5 of the embodiment of the present invention includes a discharge tray 51 and a flipping power assembly 52. ​​The discharge tray 51 is arranged in the combustion chamber 13 and is located below the feed inlet 11; the flipping power assembly 52 is drivingly connected to the discharge tray 51, and is used to drive the discharge tray 51 to flip, so that the soil sample waste after combustion can be discharged through the discharge port 12.

[0083] Specifically, after a large number of small soil samples enter from the feed port 11, they are transported to the discharge tray 51 for combustion detection under the guidance of the guide member; after the small soil samples in the combustion chamber 13 complete the combustion detection, the entire discharge tray 51 is driven to rotate 180° through the flipping power assembly 52 to flip the entire discharge tray 51. At this time, a large amount of soil sample waste falls into the discharge port 12. Since the discharge port 12 is arranged at the bottom of the combustion chamber 13, the soil sample waste after falling can be discharged out of the combustion chamber 13 through the discharge port 12. Subsequently, the flipping power assembly 52 drives the entire discharge tray 51 to continue to rotate 180° to reset the flipped discharge tray 51. At this time, the next pile of small soil samples to be tested can continue to be transported to the discharge tray 51 for combustion and detection.

[0084] according to Figure 3 As shown, in a further embodiment, a first guide member 53 for guiding the soil sample into the discharge tray 51 is provided in the feed inlet 11 , and a large number of small soil samples are guided into the discharge tray 51 through the first guide member 53 after passing through the feed inlet 11 .

[0085] The flipping power assembly 52 of the embodiment of the present invention includes a rack 521, a follower 522 and a cylinder. The follower 522 is arranged on the outer wall of the discharge tray 51. The rack 521 is vertically arranged and part of its teeth are engaged with part of the tooth edges of the follower 522. The output shaft of the cylinder is drivingly connected to the rack 521 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 part of the teeth of the rack 521 are meshed with part of the tooth edges of the follower 522, the tooth edges of the follower 522 are pushed by the teeth of the rack 521 to make the follower 522 rotate in the circumferential direction. Since the follower 522 is fixed to the discharge tray 51, when the follower 522 rotates, it can drive the discharge tray 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 pushing the follower 522 to rotate until the entire discharge tray 51 is flipped 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 gas rod is stored, it pulls the rack 521 to move downward, thereby pushing the follower 522 to rotate until the entire discharge tray 51 is reset, and then the next pile of small soil samples to be tested can be transported.

[0088] It is understandable that the cylinder of the embodiment of the present invention is connected to the compressed air system through an air pipe. When the compressed air in the system is sent into the cylinder, the pressure inside the cylinder will increase. A piston connected to the output shaft is arranged inside the cylinder. When the compressed air is sent into the cylinder, the piston will move due to the pressure. In addition, the cylinder is provided with a valve or switch to control the inlet and outlet of the compressed air, thereby controlling the movement of the piston. By controlling the inlet and outlet of the compressed air, the working rhythm, speed and position control of the cylinder can be achieved.

[0089] In some specific embodiments, a limiting portion is provided on the cavity wall of the combustion chamber 13 , and when the discharge tray 51 rotates until its back side abuts against the limiting portion, it is used to limit the rotation range of the discharge tray 51 .

[0090] Specifically, in order to ensure that the discharge tray 51 can be swung horizontally and avoid the discharge tray 51 being tilted, which may cause the small soil sample to be tested to be unable to be transported into the discharge tray 51; for this reason, when the flipping power component 52 drives the discharge tray 51 to rotate until it abuts against the limiting portion, the discharge tray 51 cannot continue to flip; for example, when discharging soil sample waste, the discharge tray 51 is driven by the flipping power component 52 to rotate until the back side of the discharge tray 51 abuts against the bottom of the limiting portion and cannot be flipped further. At this time, the accommodating cavity of the discharge tray 51 faces the bottom surface to allow the soil sample waste to fall; when transporting the small soil sample to be tested, the flipping power component 52 drives the discharge tray 51 to rotate until the back side of the discharge tray 51 abuts against the top of the limiting portion and cannot be flipped further. At this time, the discharge tray 51 faces the top surface, and then the small soil sample to be tested can be transported into the discharge tray 51.

[0091] In some specific embodiments, a lifting seat 8 and a third power assembly drivingly connected to the lifting seat 8 are provided at the bottom of the flipping power assembly 52. ​​Specifically, when it is necessary to stir the soil sample, the lifting seat 8 is driven to move upward by the third power assembly to push the entire flipping power assembly 52 to a height at which it can be stirred by each stirring part 61; when the soil sample is burned and needs to be discharged, the lifting seat 8 is driven to move downward by the third power assembly to a height at which the discharge tray 51 cannot collide with the stirring parts 61 when flipping.

[0092] It can be understood that the third power assembly of the embodiment of the present invention includes a screw rod, a motor, and a moving block movably disposed on the screw rod, which is used to drive the flip power assembly 52 to rise and fall.

[0093] In some specific embodiments, a closed door is provided in the feed port 11 and the discharge port 12 for opening or closing the feed port 11 and the discharge port 12 .

[0094] Specifically, in order to isolate the inside of the combustion chamber 13 from the outside air, after the small soil sample to be tested is transported to the discharge tray 51 through the feed inlet 11, the feed inlet 11 and the discharge port 12 are closed by the closed door. Thus, the detection of the combustion reaction is ensured to avoid interference from external factors, such as the influence of air flow or humidity changes on the measurement results. If it is necessary to discharge the soil sample waste, the soil sample waste can be discharged after opening the closed door.

[0095] It is understandable that the electric motor and the control system are used to drive the closed door. For example, the electric motor generates power through the command issued by the control system to drive the closed door to open and close. The electric motor transmits power to the closed door through a transmission device (such as a chain, gears, etc.), so that the closed door automatically opens or closes the feed port 11 and the discharge port 12.

[0096] In some specific embodiments, a second guide member 23 and a third guide member 24 are provided at the bottom of the sorting table 22, which are respectively connected to the first discharge hole 222 and the second discharge hole 223; thus, the small soil samples to be tested that fall from the multiple first discharge holes 222 are concentratedly dropped onto the conveyor belt 41 of the conveying device 4 through the second guide member 23, and the large soil samples or hard waste materials that fall from the second discharge hole 223 are concentratedly dropped to the relevant processing area through the third guide member 24. Through the second guide member 23 and the third guide member 24, the small soil samples and the large soil samples are respectively concentratedly transported to the corresponding areas, thereby achieving the purpose of smooth transportation.

[0097] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A combustion measuring instrument for soil organic carbon, characterized in that: The combustion measuring instrument comprises: A combustion chamber, wherein the combustion chamber has a combustion chamber, the combustion chamber is connected with the detection chamber; the combustion chamber has a material inlet and a material outlet; the detection chamber has an air outlet; A stirring assembly, the stirring assembly is arranged in the combustion chamber, the stirring assembly comprises a plurality of stirring parts, a driving gear, a plurality of driven gears and a motor; the motor is arranged on the combustion chamber, the driving gear and the plurality of driven gears are respectively sleeved on the connecting shafts of the stirring parts, the stirring part sleeved with the driving gear is connected to the output shaft of the motor, and the plurality of driven gears are meshed with the driving gear; A heating component, which is arranged in the combustion chamber and is used for heating; A gas pushing assembly, the gas pushing assembly comprising a movable plate and a first power assembly; the movable plate is arranged in the detection chamber, and the first power assembly is drivingly connected to the movable plate to drive the movable plate to rise and fall; A detection module is disposed in the detection cavity.

2. The combustion measuring instrument for soil organic carbon according to claim 1, characterized in that: The combustion measuring instrument also includes: A sorting device, the sorting device is connected to the combustion bin, the sorting device comprises a supporting base and a sorting platform; the sorting platform is arranged on the top of the supporting base, a cutting cavity and a material-dropping cavity are formed on the sorting platform, a bottom surface of the cutting cavity is penetrated with a plurality of first material-discharging holes and second material-discharging holes, each of the first material-discharging holes is connected to the material-inlet, and each of the second material-discharging holes is connected to the material-dropping cavity; the outer diameter of each of the first material-discharging holes is smaller than the outer diameter of the second material-discharging holes; A cutting device, wherein the cutting device is arranged in a cutting chamber, the cutting device comprises a cutting blade, a second power assembly and a second rotating shaft, the second rotating shaft is arranged parallel to the length of the cutting chamber, the cutting blade is arranged on the outside of the second rotating shaft, and the output shaft of the second power assembly is drivingly connected to the second rotating shaft for driving the second rotating shaft to rotate in a circumferential direction.

3. The combustion measuring instrument for soil organic carbon according to claim 2, characterized in that: The cutting cavity is arranged obliquely, and the cutting blade extends along the length and circumference of the second rotating shaft.

4. The combustion measuring instrument for soil organic carbon according to claim 2, characterized in that: The combustion measuring instrument further includes a conveying device, which is arranged below each of the first discharge holes and is used to convey the soil to the feed port; The conveying device comprises a conveyor belt, a second power assembly and two rotating gears; each of the rotating gears is rotatably arranged on the supporting base, the inner side of the conveyor belt is wound around the outer side of each of the rotating gears, and the output shaft of the second power assembly is drivingly connected to any one of the rotating gears, so as to drive the rotating gear connected thereto to rotate; Part of the conveyor belt extends into the feed inlet, or the conveyor belt extends above the feed inlet.

5. The combustion measuring instrument for soil organic carbon according to claim 1, characterized in that: The combustion tester further comprises a discharge device for discharging the soil waste after combustion.

6. The combustion measuring instrument for soil organic carbon according to claim 5, characterized in that: The discharge device comprises a discharge tray and a turning power assembly, wherein the discharge tray is arranged in the combustion chamber and below the feed inlet, and a first guide member for guiding the soil sample into the discharge tray is arranged in the feed inlet; The overturning power assembly is drivingly connected to the discharge tray and is used to drive the discharge tray to overturn so that the burned soil sample waste is discharged through the discharge port.

7. The combustion measuring instrument for soil organic carbon according to claim 6, characterized in that: The flipping power assembly includes a rack, a driven gear and a cylinder. The driven gear is arranged on the outer wall of the discharge tray. The rack is vertically arranged and part of its teeth are meshed with part of the tooth edges of the driven gear. The output shaft of the cylinder is drivingly connected to the rack to drive the rack to move up and down.

8. The combustion measuring instrument for soil organic carbon according to claim 6, characterized in that: A limiting portion is arranged on the cavity wall of the combustion cavity, and when the discharge tray rotates until its back side abuts against the limiting portion, it is used to limit the rotation range of the discharge tray.

9. The combustion measuring instrument for soil organic carbon according to claim 1, characterized in that: The feed inlet and the discharge outlet are both provided with closed doors for opening or closing the feed inlet and the discharge outlet.

10. The combustion measuring instrument for soil organic carbon according to claim 2, characterized in that: A second guide member and a third guide member are provided at the bottom of the sorting platform and are respectively connected to the first discharge hole and the second discharge hole.

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