Three-detector parallel oxygen ammonia hydrogen analyzer for soil detection

Abstract

The invention discloses an oxygen, ammonia and hydrogen analyzer with three parallel detectors for soil detection, relates to the technical field of soil detection, and solves the problems that the efficiency is low and detection gas leakage is easy to occur when the content of oxygen, ammonia and hydrogen in soil is detected. The invention discloses an oxygen-ammonia-hydrogen analyzer with three parallel detectors for soil detection. The oxygen-ammonia-hydrogen analyzer comprises a bottom plate, the soil sample treatment structure is mounted at the top of the bottom plate; the gas conversion and separation mechanism is mounted at the top of the soil sample treatment structure; the gas-liquid analysis container is arranged at the top of the gas conversion and separation mechanism; the parallel detection structure is arranged on the side surface of the gas-liquid analysis container and is positioned at the top of the gas conversion and separation mechanism. According to the soil oxygen, ammonia and hydrogen content detection device and method, through the mode that oxygen, ammonia and hydrogen elements in soil are converted into gas-liquid phases, and gas-liquid phase mixed gas is subjected to separation detection, the detection accuracy of the content of oxygen, ammonia and hydrogen in the soil is guaranteed. Meanwhile, when the liquid phase is conveyed and detected, the problem of leakage is not prone to occurring.

Description

Technical Field

[0001] This invention relates to the field of soil testing technology, specifically to an oxygen, ammonia, and hydrogen analyzer for soil testing with three parallel detectors. Background Technology

[0002] Oxygen, ammonia, and hydrogen in soil are primarily involved in improving the soil environment, promoting plant growth, and maintaining ecological balance. Specifically, the purpose of oxygen in soil is to promote root respiration and enhance the activity of soil microorganisms; the purpose of ammonia in soil is to provide nitrogen sources for plants and regulate soil pH; and the purpose of hydrogen in soil is to promote the proliferation of soil microorganisms and assist in nitrogen fixation.

[0003] When testing soil, it is necessary to test the oxygen, ammonia, and hydrogen content separately, which requires the use of corresponding soil oxygen, ammonia, and hydrogen analysis instruments.

[0004] However, this soil oxygen, ammonia, and hydrogen analyzer has the following drawbacks in practical use: 1. Existing soil oxygen, ammonia, and hydrogen analyzers typically introduce an inert gas (helium) into the soil and heat it (3000 degrees Celsius) in a graphite crucible to convert the oxygen, ammonia, and hydrogen into carbon monoxide, ammonia, and hydrogen, respectively. The converted carbon monoxide, ammonia, and hydrogen are then reacted with an oxidant (copper oxide) to convert carbon monoxide into carbon dioxide and hydrogen into water vapor. Ammonia, unlike carbon dioxide and water vapor, can be detected using a thermal conductivity detector based on the principle of thermal conductivity. Carbon dioxide and water vapor, however, need to be separated before separate detection. Traditional methods for separating carbon dioxide and water vapor are prone to leakage during gas transport, affecting the accuracy of carbon dioxide and water vapor detection. Furthermore, the detection of hydrogen, carbon dioxide, and water vapor cannot be performed simultaneously, resulting in low efficiency. 2. Existing soil oxygen, ammonia, and hydrogen analyzers, when reacting carbon monoxide, ammonia, and hydrogen with copper oxide to convert them into carbon dioxide, water vapor, and hydrogen, suffer from small contact areas and low reactivity between these substances. Similarly, when separating carbon dioxide and water vapor using separating packing materials, the small contact area between the packing material and the carbon dioxide and water vapor easily leads to axial backmixing, resulting in low separation efficiency and poor mass transfer. Summary of the Invention

[0005] The purpose of this invention is to provide a soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides a soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors, comprising: a base plate; a soil sample processing structure mounted on top of the base plate; a gas conversion and separation mechanism mounted on top of the soil sample processing structure; a gas-liquid analysis container disposed on top of the gas conversion and separation mechanism; and a parallel detection structure disposed on the side of the gas-liquid analysis container and located on top of the gas conversion and separation mechanism. The gas conversion and separation mechanism includes: a gas conversion component mounted on top of the soil sample processing structure; a transfer rod connected to the gas conversion component and extending to the outside of the gas conversion component; a toothed drive assembly connected to the transfer rod; a transmission belt connected to the outside of the top of the transfer rod via a synchronous pulley; and an oxygen-hydrogen separation structure connected to the transmission belt via the synchronous pulley. The bottom of the oxygen-hydrogen separation structure is connected to the gas conversion component, the oxygen-hydrogen separation structure is connected to the gas-liquid analysis container, and a parallel detection structure is installed on the top of the gas conversion component.

[0007] As a preferred embodiment of the present invention, the soil sample processing structure includes: a sample processing container installed on the top of the base plate; an outer liner disposed inside the sample processing container; a graphite inner liner disposed inside the outer liner; a helium gas inlet opened on the inner wall of the graphite inner liner; and a resistance heating copper tube disposed inside the sample processing container and located outside the outer liner. The sample processing vessel is equipped with a gas conversion assembly on its top, and the graphite inner liner is filled with helium.

[0008] As a preferred embodiment of the present invention, the gas conversion assembly includes: a conversion vessel body installed at the top of the sample processing vessel; a heat insulation membrane installed at the bottom of the conversion vessel body; a rotating metal ball rotatably connected to the top of the conversion vessel body and located above the heat insulation membrane; and a central rotating rod installed at the center of the rotating metal ball and extending to the outside of the conversion vessel body. The rotating metal ball contains copper oxide, and the top of the conversion tank is equipped with a parallel detection structure and a tooth drive assembly.

[0009] As a preferred embodiment of the present invention, a gas venting pipeline is connected to the eccentric part of the top of the conversion tank, and a gas pump module is connected to the top of the gas venting pipeline. An oxygen-hydrogen separation structure is connected to the top of the gas pump module.

[0010] As a preferred embodiment of the present invention, a vapor spiral pipe is provided on the outer side of the transfer rod, a gas-liquid analysis container is connected to the bottom of the vapor spiral pipe, and an oxygen-hydrogen separation structure is connected to the top of the vapor spiral pipe.

[0011] As a preferred embodiment of the present invention, the tooth drive assembly includes: an H-shaped support installed at the center of the top of the conversion tank and internally connected to a central rotating rod; a servo drive source installed on one side of the bottom of the H-shaped support; a drive gear connected to the output end of the servo drive source and rotatably connected to the eccentric part of the top of the H-shaped support; and a rotating gear meshing with the drive gear and rotatably connected to the top of the H-shaped support. A central rotating rod is fixedly installed on the inner side of the rotating gear, and parallel detection structures are installed on the left and right sides of the bottom of the H-shaped support.

[0012] As a preferred embodiment of the present invention, the oxygen-hydrogen separation structure includes: an oxygen-hydrogen separation tank mounted on top of the gas pump module; a partition disposed inside the oxygen-hydrogen separation tank; oxygen-hydrogen separation packing disposed between the two partitions; a pusher cam movably disposed inside the oxygen-hydrogen separation packing and movably disposed between the two partitions; an eccentric rotating rod connected to the pusher cam and connected to the inner side of the transmission belt via a synchronous pulley; a magnetic core mounted at the bottom of the partition; a metal cylinder slidably connected to the bottom of the magnetic core; an upper connecting rod mounted at the center of the top of the metal cylinder; a first spring connected to the top of the upper connecting rod and mounted at the center of the bottom of the magnetic core; a second spring mounted at the bottom of the metal cylinder and disposed at the bottom of the oxygen-hydrogen separation tank; a gas buoyancy port opened at the eccentric position at the bottom of the metal cylinder; and a vapor side port opened on one side of the inner wall of the metal cylinder. The side of the steam-side port is connected to the steam spiral pipe.

[0013] In a preferred embodiment of the present invention, an oxygen-ammonia conduit is connected to one side of the top of the oxygen-hydrogen separation tank, and another gas-liquid analysis container is connected to the bottom of the oxygen-ammonia conduit. The oxygen-ammonia conduit is positioned above the oxygen-hydrogen separation packing.

[0014] In a preferred embodiment of the present invention, a magnetic circuit support is installed on the outside of the oxygen-hydrogen separation tank, the magnetic circuit support is disposed on the outside of the magnetic core, and an electromagnetic winding is disposed on the outside of the magnetic circuit support. The electromagnetic winding is connected to a power source via a wire.

[0015] As a preferred embodiment of the present invention, the parallel detection structure includes: a slide rail system installed on the left and right sides of the bottom of the H-shaped support; a horizontal slide block installed at the bottom of the slide rail system; a clamp installed at the bottom of the horizontal slide block by screws; a detection unit installed inside the clamp; and a detection port connected to the detection unit and installed on the bottom side of the gas-liquid analysis container. The detection unit is configured with three types: an oxygen ion infrared detection module, a hydrogen ion infrared detection module, and an ammonia ion thermal conductivity detection module. Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: To detect the oxygen, ammonia, and hydrogen content in the soil, an inert gas (helium) is first used for protection. Then, the oxygen in the soil reacts with carbon in a graphite crucible under heating conditions, converting the oxygen, ammonia, and hydrogen into carbon monoxide, ammonia, and hydrogen, respectively. Subsequently, the carbon monoxide, ammonia, and hydrogen react with copper oxide to transform them into carbon dioxide, water vapor, and ammonia.

[0016] 1. In a soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors, when detecting soil components converted into carbon dioxide, water vapor, and ammonia, the gas and liquid phases within the gas-liquid mixture (carbon dioxide, water vapor, and ammonia) can be separated using oxygen-hydrogen separation packing. This ensures that water vapor (liquid phase) remains at the bottom of the packing, while carbon dioxide and ammonia (gas phase) move to the top, guaranteeing more accurate results when subsequently detecting oxygen, ammonia, and hydrogen content separately. Simultaneously, when transporting and detecting water vapor in its liquid phase, a magnetic field can be generated to lift the metal cylinder, aligning the steam side inlet and the steam spiral pipe to prevent leakage during liquid phase (water vapor) transport. 2. In the soil oxygen, ammonia and hydrogen analyzer with three detectors in parallel, when liquid water vapor enters the interior of the steam spiral tube, the design of the steam spiral tube structure ensures that the water vapor inside the steam spiral tube can fully contact (indirectly) the cooling module on the inside, increasing the condensation time and contact area of ​​the water vapor. This ensures that the transported water vapor becomes liquid when it enters the gas-liquid analysis container for detection. By detecting the hydrogen content in the liquid state, the accuracy of hydrogen content detection is guaranteed. 3. In the soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors, when separating carbon dioxide, ammonia, and water vapor in the gas and liquid phases and converting carbon monoxide and ammonia into carbon dioxide and water vapor, the servo drive source drives the gear structure to rotate, which in turn drives the central rotating rod to rotate. On the one hand, this causes the copper oxide inside the rotating metal ball to rotate continuously, increasing the activity and contact area when the gas and copper oxide come into contact. On the other hand, it causes the packing inside the oxygen and hydrogen separation packing to move, increasing the contact area between the gaseous ammonia and carbon dioxide and the oxygen and hydrogen separation packing, thereby improving the efficiency and effectiveness of separating carbon dioxide, ammonia, and water vapor in the gas and liquid phases. 4. In the soil oxygen, ammonia, and hydrogen analyzer with three detectors operating in parallel, when pretreating soil samples, a protective inert gas (helium) is first filled inside the soil sample, and continuous heating is performed on the outside of the soil sample. The principle of the inert gas (helium) floating and dispersing to the outside ensures that the inert gas (helium) can fully contact the soil, and the contact area is larger. This effectively protects the safety of continuous heating of the soil and prevents the problem of unnatural release of oxygen, nitrogen, and hydrogen elements due to excessive local heat. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the entire structure of the present invention; Figure 3 This is a schematic diagram of the overall front cross-section of the present invention; Figure 4 This is a schematic diagram showing the cross-sectional view of the connection between the soil sample processing structure and the gas conversion component of the present invention; Figure 5 This is an exploded view of the soil sample processing structure after cross-section according to the present invention; Figure 6 This is a cross-sectional structural schematic diagram of the gas conversion component and the transfer rod of the present invention; Figure 7 This is a schematic diagram of the gas conversion and separation mechanism of the present invention; Figure 8 This is a schematic diagram showing the cross-sectional view of the connection between the diversion sampling component and the sieving sampling component of the present invention; Figure 9 This is a schematic diagram showing the cross-sectional view of the connection between the steam spiral pipeline and the oxygen-hydrogen separation structure of the present invention; Figure 10 This is a schematic diagram of the parallel detection structure of the present invention; Figure 11This is a cross-sectional structural diagram showing the connection between the cooling module and the steam spiral pipeline of the present invention; In the picture: 10. Base plate; 20. Soil sample processing structure; 201. Sample processing container; 202. Outer liner; 203. Graphite inner liner; 204. Helium inlet; 205. Resistance heating copper tube; 30. Gas conversion and separation mechanism; 301. Gas conversion assembly; 302. Transfer rod; 303. Gear drive assembly; 304. Transmission belt; 305. Oxygen-hydrogen separation structure; 3011, Conversion tank; 30111, Gas venting pipeline; 30112, Air pump module; 3012, Heat insulation film; 3013, Rotating metal ball; 3021, Cooling module; 3022, Cooling inlet; 3023, Steam spiral piping; 3031, H-shaped support; 3032, servo drive source; 3033, drive gear; 3034, rotating gear; 3051, Oxygen-hydrogen separator body; 305011, Oxygen-ammonia conduit; 305012, Magnetic circuit support; 305013, Electromagnetic winding; 3052, Baffle plate; 3053, Oxygen-hydrogen separator packing; 3054, Pusher cam; 3055, Eccentric rotating rod; 3056, Magnetic core; 3057, Metal cylinder; 3058, Upper connecting rod; 3059, First spring; 30510, Second spring; 30511, Gas floating port; 30512, Vapor side port; 40. Gas-liquid analysis containers; 50. Parallel detection structure; 501. Slide rail system; 502. Horizontal slide; 503. Fixture; 504. Detection unit; 505. Detection port. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application. Example 1

[0021] Please see Figures 1-10A soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors includes a base plate 10; a soil sample processing structure 20 mounted on top of the base plate 10; a gas conversion and separation mechanism 30 mounted on top of the soil sample processing structure 20; a gas-liquid analysis container 40 mounted on top of the gas conversion and separation mechanism 30; and a parallel detection structure 50 mounted on the side of the gas-liquid analysis container 40 and located on top of the gas conversion and separation mechanism 30. The gas conversion and separation mechanism 30 includes a gas conversion component 301 mounted on top of the soil sample processing structure 20; and a gas conversion... A transfer rod 302 is connected to and extends to the outside of the gas conversion assembly 301; a toothed drive assembly 303 is connected to the transfer rod 302; a transmission belt 304 is connected to the top outside of the transfer rod 302 via a synchronous pulley; an oxygen-hydrogen separation structure 305 is connected to the transmission belt 304 via a synchronous pulley, wherein the bottom of the oxygen-hydrogen separation structure 305 is connected to the gas conversion assembly 301, the oxygen-hydrogen separation structure 305 is connected to the gas-liquid analysis container 40, and a parallel detection structure 50 is installed on the top of the gas conversion assembly 301.

[0022] In this invention, a vapor spiral pipe 3023 is provided on the outside of the transfer rod 302, a gas-liquid analysis container 40 is connected to the bottom of the vapor spiral pipe 3023, and an oxygen-hydrogen separation structure 305 is connected to the top of the vapor spiral pipe 3023.

[0023] The working principle is as follows: When detecting the oxygen, ammonia, and hydrogen content in soil, the soil is first placed inside the soil sample processing structure 20. By adding an inert gas (helium) and heating the soil sample processing structure 20, the oxygen, ammonia, and hydrogen are converted into carbon monoxide, ammonia, and hydrogen gas. Then, the converted carbon monoxide, ammonia, and hydrogen gas enter the gas conversion component 301, where carbon monoxide is converted into carbon dioxide and hydrogen is oxidized into water vapor. This water vapor is then transported to the oxygen-hydrogen separation structure 305 for gas-liquid separation of carbon dioxide and water vapor. During the separation of carbon dioxide and water vapor by the oxygen-hydrogen separation structure 305, the separated water vapor can be vented and transported to the steam spiral pipe 3023 using an electromagnetic field. Compared to traditional transport methods, this method creates smaller gaps and reduces the risk of water vapor leakage.

[0024] For details, please refer to the following: Figure 4 and Figure 5The soil sample processing structure 20 includes: a sample processing container 201 installed on the top of the base plate 10; an outer liner 202 disposed inside the sample processing container 201; a graphite inner liner 203 disposed inside the outer liner 202; a helium gas inlet 204 opened on the inner wall of the graphite inner liner 203; and a resistance heating copper tube 205 disposed inside the sample processing container 201 and outside the outer liner 202. A gas conversion component 301 is installed on the top of the sample processing container 201, and the interior of the graphite inner liner 203 is filled with helium gas.

[0025] In the three-detector parallel soil oxygen, ammonia and hydrogen analyzer of the present invention, when detecting the oxygen, ammonia and hydrogen content in the soil, the sampled soil is first placed between the inner side of the outer liner 202 and the outer wall of the graphite inner liner 203. The graphite inner liner 203 is filled with sufficient inert gas through the helium gas inlet 204 opened inside. The oxygen, ammonia and hydrogen in the soil react with the carbon in the graphite crucible to generate carbon monoxide, hydrogen and hydrogen gas, which enter the interior of the gas conversion component 301.

[0026] For details, please refer to the following: Figure 6 The gas conversion assembly 301 includes: a conversion vessel 3011 installed on top of the sample processing vessel 201; a heat insulation film 3012 installed at the bottom of the conversion vessel 3011; a rotating metal ball 3013 rotatably connected to the top of the conversion vessel 3011 and located above the heat insulation film 3012; and a central rotating rod 302 installed at the center of the rotating metal ball 3013 and extending to the outside of the conversion vessel 3011. The rotating metal ball 3013 contains copper oxide, and a parallel detection structure 50 and a tooth drive assembly 303 are installed on the top of the conversion vessel 3011.

[0027] In this scheme, a gas venting pipe 30111 is connected to the eccentric part of the top of the conversion tank 3011, and a gas pump module 30112 is connected to the top of the gas venting pipe 30111. An oxygen-hydrogen separation structure 305 is connected to the top of the gas pump module 30112.

[0028] In the three-detector parallel soil oxygen, ammonia, and hydrogen analyzer of the present invention, carbon monoxide, hydrogen, and hydrogen gas entering the conversion tank 3011 react with copper oxide inside the rotating metal ball 3013. Carbon monoxide is converted into carbon dioxide, and hydrogen is oxidized into water vapor. Subsequently, carbon dioxide, water vapor, and hydrogen are drawn in by the pumping force generated by the gas pump module 30112 and enter the oxygen-hydrogen separation structure 305 through the gas venting pipe 30111.

[0029] The rotation of the central rod 302 causes the rotating metal ball 3013 mounted on its outer side to rotate, which in turn activates the copper oxide inside the rotating metal ball 3013, effectively increasing the contact area and reaction activity between the copper oxide and carbon monoxide and hydrogen.

[0030] For details, please refer to the following: Figure 6 and Figure 7 The tooth drive assembly 303 includes: an H-shaped support 3031 installed at the top center of the conversion tank 3011 and internally connected to a central rotating rod 302; a servo drive source 3032 installed on one side of the bottom of the H-shaped support 3031; a drive gear 3033 connected to the output end of the servo drive source 3032 and rotatably connected to the eccentric top of the H-shaped support 3031; and a rotating gear 3034 meshing with the drive gear 3033 and rotatably connected to the top of the H-shaped support 3031. The central rotating rod 302 is fixedly installed on the inner side of the rotating gear 3034, and parallel detection structures 50 are installed on the left and right sides of the bottom of the H-shaped support 3031.

[0031] In the three-detector parallel soil oxygen, ammonia, and hydrogen analyzer of the present invention, when it is necessary to drive the central rotating rod 302 to rotate, the servo drive source 3032 is activated, causing the drive gear 3033 connected to the outer side of the output end of the servo drive source 3032 to rotate, and causing the rotating gear 3034 meshing with the side of the drive gear 3033 to rotate. When the rotating gear 3034 rotates, the central rotating rod 302 installed inside it will rotate, causing the top outer side of the central rotating rod 302 to operate via the synchronous pulley connected to the transmission belt 304.

[0032] For details, please refer to the following: Figure 8 and Figure 9 The oxygen-hydrogen separation structure 305 includes: an oxygen-hydrogen separation tank 3051 mounted on top of the gas pump module 30112; a partition 3052 disposed inside the oxygen-hydrogen separation tank 3051; an oxygen-hydrogen separation packing 3053 disposed between the two partitions 3052; a pusher cam 3054 movably disposed inside the oxygen-hydrogen separation packing 3053 and movably disposed between the two partitions 3052; an eccentric rotating rod 3055 connected to the pusher cam 3054 and connected to the inner side of the transmission belt 304 via a synchronous pulley; a magnetic core 3056 mounted at the bottom of the partition 3052; and a slidably connected to the magnetic core 3056. 056 The metal cylinder 3057 at the bottom; the upper connecting rod 3058 installed at the center of the top of the metal cylinder 3057; the first spring 3059 connected to the top of the upper connecting rod 3058 and installed at the center of the bottom of the magnetic core 3056; the second spring 30510 installed at the bottom of the metal cylinder 3057 and located at the bottom of the oxygen-hydrogen separation tank 3051; the gas floating port 30511 opened at the eccentric position at the bottom of the metal cylinder 3057; the vapor side port 30512 opened on one side of the inner wall of the metal cylinder 3057, wherein the side of the vapor side port 30512 is connected to a vapor spiral pipe 3023.

[0033] In this design, an oxygen-hydrogen separation tank 3051 has an oxygen-ammonia conduit 305011 connected to one side of its top. The bottom of the oxygen-ammonia conduit 305011 is connected to another gas-liquid analysis container 40. The oxygen-ammonia conduit 305011 is positioned above the oxygen-hydrogen separation packing 3053. A magnetic circuit support 305012 is installed on the outside of the oxygen-hydrogen separation tank 3051. The magnetic circuit support 305012 is positioned outside the magnetic core 3056. An electromagnetic winding 305013 is installed on the outside of the magnetic circuit support 305012. The electromagnetic winding 305013 is connected to a power source via a wire.

[0034] In the three-detector parallel soil oxygen, ammonia, and hydrogen analyzer of the present invention, when carbon dioxide, water vapor, and hydrogen enter the interior of the oxygen-hydrogen separation tank 3051, they enter the interior of the metal cylinder 3057 through the gas buoyancy port 30511 and come into contact with the oxygen-hydrogen separation packing 3053. At this time, the oxygen-hydrogen separation packing 3053 (gas-liquid phase separation) separates the gaseous carbon dioxide and hydrogen from the liquid water vapor, causing the water vapor to temporarily remain at the bottom of the packing 3053, while the carbon dioxide and hydrogen move to the top. Afterwards, the carbon dioxide and hydrogen move through the oxygen-ammonia conduit 305011 to the interior of another gas-liquid analysis container 40 for storage.

[0035] When the separated water vapor is detected, the electromagnetic winding 305013 is energized with a power source, allowing current to flow into the interior of the electromagnetic winding 305013 and generating a magnetic field within it. The magnetic force generated by this magnetic field causes the magnetic core 3056 to attract the metal cylinder 3057 at its bottom, moving it upwards. This overcomes the spring force of the first spring 3059, causing the vapor-side opening 30512 to move upwards to the side of the vapor spiral pipe 3023, allowing the water vapor to be transported through the vapor spiral pipe 3023 to the interior of a gas-liquid analysis container 40 for storage.

[0036] When the drive belt 304 rotates, it drives the eccentric rod 3055 connected to the synchronous pulley on its inner side to rotate, and drives the pusher cam 3054 installed on the outer side of the eccentric rod 3055 to rotate. Through the protruding part on the outer side of the pusher cam 3054, the oxygen-hydrogen separation packing 3053 is continuously vibrated, which effectively increases the contact area between the oxygen-hydrogen separation packing 3053 and carbon dioxide and hydrogen.

[0037] For details, please refer to the following: Figure 10The parallel detection structure 50 includes: a slide rail system 501 installed on the left and right sides of the bottom of the H-shaped support 3031; a horizontal slide block 502 installed at the bottom of the slide rail system 501; a clamp 503 installed at the bottom of the horizontal slide block 502 by screws; a detection unit 504 installed inside the clamp 503; and a detection port 505 connected to the detection unit 504 and installed on the bottom side of the gas-liquid analysis container 40. The detection unit 504 is configured as an oxygen ion infrared detection module, a hydrogen ion infrared detection module, and an ammonia ion thermal conductivity detection module.

[0038] In the soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors of the present invention, when detecting carbon dioxide, hydrogen, and water vapor inside the two gas-liquid analysis containers 40, the slide rail system 501 is activated to drive the horizontal slide block 502 installed at its bottom to move horizontally, so that the detection unit 504 installed at the bottom of the horizontal slide block 502 through the clamp 503 moves to the inside of the detection port 505, and the oxygen, ammonia, and hydrogen content is detected through the detection port set upward by the detection unit 504. Example 2

[0039] For details, please refer to the following: Figure 11 The transfer rod 302 has a cooling module 3021 installed inside. The cooling module 3021 has a cooling port 3022 opened on the inner wall of the transfer rod 302 on the outside. A steam spiral pipe 3023 is provided on the outside of the cooling port 3022.

[0040] In the soil oxygen, ammonia and hydrogen analyzer with three parallel detectors of the present invention, when water vapor enters the interior of the steam spiral tube 3023, it will indirectly come into contact with the cooling gas generated by the operation of the cooling module 3021. The cooling gas can condense the water vapor transported on the outside, so that the water vapor becomes liquid, which improves the convenience of subsequent detection of the hydrogen content inside the liquid water vapor.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0042] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0043] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. A soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors, characterized in that, include: Base plate (10); soil sample processing structure (20) installed on top of the base plate (10); gas conversion separation mechanism (30) installed on top of the soil sample processing structure (20); gas-liquid analysis container (40) set on top of the gas conversion separation mechanism (30); parallel detection structure (50) set on the side of the gas-liquid analysis container (40) and located on top of the gas conversion separation mechanism (30). The gas conversion and separation mechanism (30) includes: a gas conversion component (301) installed on top of the soil sample processing structure (20); a transfer rod (302) connected to the gas conversion component (301) and extending to the outside of the gas conversion component (301); a toothed drive assembly (303) connected to the transfer rod (302); a transmission belt (304) connected to the outside of the top of the transfer rod (302) via a synchronous pulley; and an oxygen-hydrogen separation structure (305) connected to the transmission belt (304) via a synchronous pulley. The bottom of the oxygen-hydrogen separation structure (305) is connected to the gas conversion component (301), the oxygen-hydrogen separation structure (305) is connected to the gas-liquid analysis container (40), and the top of the gas conversion component (301) is equipped with a parallel detection structure (50).

2. The soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors as described in claim 1, characterized in that: The soil sample processing structure (20) includes: a sample processing container (201) installed on the top of the base plate (10); an outer liner (202) disposed inside the sample processing container (201); a graphite inner liner (203) disposed inside the outer liner (202); a helium gas inlet (204) opened on the inner wall of the graphite inner liner (203); and a resistance heating copper tube (205) disposed inside the sample processing container (201) and outside the outer liner (202). The sample processing container (201) is equipped with a gas conversion assembly (301) on its top, and the graphite inner liner (203) is filled with helium.

3. The soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors as described in claim 2, characterized in that: The gas conversion assembly (301) includes: a conversion tank (3011) installed on top of the sample processing tank (201); a heat insulation membrane (3012) installed at the bottom inside the conversion tank (3011); a rotating metal ball (3013) rotatably connected to the top inside the conversion tank (3011) and located above the heat insulation membrane (3012); and a central rotating rod (302) installed at the center inside the rotating metal ball (3013) and extending to the outside of the conversion tank (3011). The rotating metal ball (3013) contains copper oxide, and the top of the conversion tank (3011) is equipped with a parallel detection structure (50) and a tooth drive assembly (303).

4. The oxygen, ammonia, and hydrogen analyzer for soil testing with three parallel detectors as described in claim 2, characterized in that: The top of the conversion tank (3011) is connected to a gas venting pipe (30111), the top of the gas venting pipe (30111) is connected to a gas pump module (30112), and the top of the gas pump module (30112) is connected to an oxygen-hydrogen separation structure (305).

5. The soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors according to claim 4, characterized in that: A vapor spiral pipe (3023) is provided on the outside of the transfer rod (302). A gas-liquid analysis container (40) is connected to the bottom of the vapor spiral pipe (3023), and an oxygen-hydrogen separation structure (305) is connected to the top of the vapor spiral pipe (3023).

6. The soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors according to claim 3, characterized in that: The tooth drive assembly (303) includes: an H-shaped support (3031) installed at the top center of the conversion tank (3011) and internally connected to a central rotating rod (302); a servo drive source (3032) installed on one side of the bottom of the H-shaped support (3031); a drive gear (3033) connected to the output end of the servo drive source (3032) and rotatably connected to the eccentric top of the H-shaped support (3031); and a rotating gear (3034) meshing with the drive gear (3033) and rotatably connected to the top of the H-shaped support (3031). The rotating gear (3034) has a central rotating rod (302) fixedly installed on its inner side, and the H-shaped support (3031) has parallel detection structures (50) installed on its left and right sides at the bottom.

7. The soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors as described in claim 5, characterized in that: The oxygen-hydrogen separation structure (305) includes: an oxygen-hydrogen separation tank (3051) installed on top of the gas pump module (30112); a partition (3052) disposed inside the oxygen-hydrogen separation tank (3051); oxygen-hydrogen separation packing (3053) disposed between the two partitions (3052); a pusher cam (3054) movably disposed inside the oxygen-hydrogen separation packing (3053) and movably disposed between the two partitions (3052); an eccentric rotating rod (3055) connected to the pusher cam (3054) and connected to the inner side of the transmission belt (304) via a synchronous pulley; and a bottom plate installed at the bottom of the partition (3052). Magnetic core (3056); metal cylinder (3057) slidably connected to the bottom of the magnetic core (3056); upper connecting rod (3058) installed at the center of the top of the metal cylinder (3057); first spring (3059) connected to the top of the upper connecting rod (3058) and installed at the center of the bottom of the magnetic core (3056); second spring (30510) installed at the bottom of the metal cylinder (3057) and located at the bottom of the oxygen-hydrogen separation tank (3051); gas floating port (30511) opened at the eccentric position of the bottom of the metal cylinder (3057); vapor side port (30512) opened on one side of the inner wall of the metal cylinder (3057). The side of the steam-side port (30512) is connected to the steam spiral pipe (3023).

8. The oxygen, ammonia, and hydrogen analyzer for soil testing with three parallel detectors as described in claim 7, characterized in that: The oxygen-hydrogen separation tank (3051) has an oxygen-ammonia conduit (305011) connected to one side of the top, and the bottom of the oxygen-ammonia conduit (305011) is connected to another gas-liquid analysis container (40). The oxygen-ammonia conduit (305011) is positioned above the oxygen-hydrogen separation packing (3053).

9. The soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors according to claim 7, characterized in that: A magnetic circuit support (305012) is installed on the outside of the oxygen-hydrogen separation tank (3051). The magnetic circuit support (305012) is located on the outside of the magnetic core (3056). An electromagnetic winding (305013) is located on the outside of the magnetic circuit support (305012). The electromagnetic winding (305013) is connected to the power source via a wire.

10. The soil oxygen, ammonia, and hydrogen analyzer with three parallel detectors according to claim 5, characterized in that: The parallel detection structure (50) includes: a slide rail system (501) installed on the left and right sides of the bottom of the H-shaped support (3031); a horizontal slide (502) installed at the bottom of the slide rail system (501); a clamp (503) installed at the bottom of the horizontal slide (502) by screws; a detection unit (504) installed inside the clamp (503); and a detection port (505) connected to the detection unit (504) and installed on the bottom side of the gas-liquid analysis container (40). The detection unit (504) is configured with three types: oxygen ion infrared detection module, hydrogen ion infrared detection module, and ammonia ion thermal conductivity detection module.

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