Device and method for testing content of sulfur in soil based on infrared absorption principle

Abstract

The invention belongs to the technical field of soil content testing, particularly relates to a device and a method for testing the content of sulfur in soil based on an infrared absorption principle, and aims to solve the problems that gas flows into another detection pool along with introduction, and the residence time is difficult to control during detection, so that the detection time is insufficient, data errors are easy to occur and the like. In order to solve the problems that gas in a single detection pool cannot be uniformly distributed, and the distribution of the gas in the single detection pool is not uniform, the invention provides the following scheme: the device comprises a base bracket, the top of the base bracket is fixedly connected with a combustion bottom bin, the outer wall of the combustion bottom bin is fixedly connected with a connecting bracket, and the outer wall of one side of the connecting bracket is fixedly connected with a combustion bin; a mounting opening is formed in the top of the combustion bin. The device and method for testing the sulfur content in the soil based on the infrared absorption principle have the effect of improving the accuracy of detection data, the residence time of sulfur-containing gas in the detection chamber is prolonged during use, meanwhile, the sulfur-containing gas is distributed more uniformly, and the accuracy of the detection data is improved.

Description

Technical Field

[0001] The invention relates to the technical field of soil content testing, and in particular to a device and method for testing sulfur content in soil based on the infrared absorption principle. Background Art

[0002] Soil sulfur mainly comes from parent material, irrigation water, atmospheric dry and wet deposition, and fertilization. The sulfur content of mineral soil is generally between 0.01% and 0.05%. The sulfur content of igneous rocks in soil-forming parent material is relatively low (average 0.05%), and the sulfur content of sedimentary rocks is relatively high (average shale content 0.26%). Coastal salt residue soil and swamp soil generally have higher sulfur content than inland soil. The sulfur content of soil near densely populated cities and industrial and mining areas is higher than that of soil far away from industrial and mining areas.

[0003] Many pollutants in the environment are sulfur compounds, especially industrial production industries related to coal burning and smelting will produce a large amount of sulfides. These sulfides are transmitted through the atmosphere and settle on the ground, affecting the terrestrial ecosystem and causing harm to the ecological environment. Sulfur is also a necessary medium element for plants. Sulfur deficiency in the soil will seriously affect the output of agriculture, forestry and grassland, so scientific research on sulfur is of great significance.

[0004] There are two methods for determining total sulfur in soil. One is to oxidize sulfur into sulfur monoxide or sulfur dioxide, and the other is to convert it into disulfide for determination.

[0005] When conducting detection, existing sulfur content testing devices often pass sulfur-containing gas into the interior of a detection cell and conduct detection through the infrared absorption principle. However, when the gas is passed in for detection, the internal gas will flow to another detection cell as it is passed in. It is difficult to control its residence time during detection, resulting in insufficient detection time, data errors, and uneven distribution of gas in a single detection cell. Summary of the invention

[0006] The present invention discloses a device and method for testing sulfur content in soil based on the infrared absorption principle, aiming to solve the technical problems that the existing sulfur content testing device in the background technology often passes sulfur-containing gas into the interior of a detection pool and performs detection based on the infrared absorption principle during detection, but when the gas is passed in for detection, the internal gas flows to the interior of another detection pool as it is passed in, and it is difficult to control its residence time during detection, resulting in insufficient detection time, prone to data errors, and prone to uneven distribution of gas in a single detection pool.

[0007] The present invention proposes a device for testing sulfur content in soil based on the infrared absorption principle, comprising a base bracket, the top of the base bracket is fixedly connected with a combustion bottom bin, the outer wall of the combustion bottom bin is fixedly connected with a connecting bracket, and one side outer wall of the connecting bracket is fixedly connected with the combustion bin, the top of the combustion bin is provided with a mounting port, and a co-solvent adding module is arranged inside the mounting port, the outer wall of the combustion bin is fixedly connected with a mounting bracket, the top of the mounting bracket is fixedly connected with a fixing bracket, and an infrared detection module is arranged inside the fixing bracket, a test replacement module is arranged on the top of the base bracket, and a heating element is fixedly connected to the outer wall of one side of the connecting bracket, the top of the heating element is connected with a heating pipe fitting through a pipeline, the heating pipe fitting is located inside the combustion bin, a connecting piece is arranged outside the heating pipe fitting, and an electric telescopic rod is fixedly connected to the top of the inner wall of the combustion bin, and the output end of the electric telescopic rod is fixedly connected to the top of the connecting piece.

[0008] By providing a combustion bottom bin, a combustion bin, a connecting bracket, a mounting port, a co-solvent adding module, a mounting bracket, a fixing bracket, an infrared detection module, a test replacement module, a connecting piece, a heating piece, a heating pipe fitting and an electric telescopic rod, the co-solvent adding module can add the co-solvent as needed during use, so that the sample can be fully burned during the test, avoiding the situation that the sample is not fully burned during the test combustion, thereby affecting the accuracy of the test result; the infrared detection module can flush the gas inside the device with oxygen during use to ensure the accuracy of the detection data, and at the same time, the device can turbulent the gas inside the detection chamber during the detection to increase the time that the gas stays in a single detection chamber, and at the same time make the gas distribution more uniform, further increasing the detection accuracy; the test replacement module can replace the crucible body during use, so that the combustion test is carried out for the co-solvents with different component contents during use, and at the same time, it is convenient to quickly replace the crucible body during use for continuous testing; the heating piece, the connecting piece, the electric telescopic rod and the heating pipe fitting are used to heat the crucible body during use to perform test combustion.

[0009] In a preferred embodiment, the co-solvent adding module includes a mounting seat, which is movably connected to the inner wall of the mounting port, and the outer wall of the mounting seat is fixedly connected to a mounting frame, and the mounting frame is fixedly connected to a second motor, and the output shaft of the second motor is connected to a second gear through a coupling, and the top of the combustion chamber is fixedly connected to a fixed gear ring, and the second gear is meshed with the fixed gear ring, and the top of the mounting seat is provided with two circular openings, and the insides of the two circular openings are respectively provided with a sample adding tube and a debris removal tube, and the inner wall of the sample adding tube is provided with a plurality of elastic buffers at equal distances, and the debris removal tube is provided with a plurality of elastic buffers at equal distances. The inner wall is fixedly connected with a dust suction pump, and the input end of the dust suction pump is connected with a debris removal head through a pipeline; the outer wall of the debris removal pipe is movably connected with an inner gear ring, and the bottom of the inner gear ring is fixedly connected with three crushing parts, and the debris removal head is located between the three crushing parts, and the debris removal pipe is fixedly connected with a motor 1, and the output shaft of the motor 1 is connected with a gear 1 through a coupling, and the gear 1 is meshed with the inner gear ring, and the output end of the dust suction pump is fixedly connected with a delivery pipe, and the output end of the delivery pipe is fixedly connected with a storage bin, and the storage bin is fixedly connected to the inner wall of the mounting frame. The top is fixedly connected with a threaded connecting ring, and the outer wall of the threaded connecting ring is movably connected with a threaded cover; the inner walls of both sides of the mounting frame are movably connected with mounting shafts, the outer walls of the two mounting shafts are fixedly connected with a winding wheel, the two winding wheels are provided with connecting ropes, two guide members are provided on the mounting frame, and the outer walls of the impurity removal tube and the sample adding tube are fixedly connected with a connecting ring frame, the tops of the two connecting ring frames are fixedly connected with three connecting cables, the tops of the multiple connecting cables are respectively fixedly connected with the bottom ends of the two connecting ropes, and the two connecting ropes are respectively located inside the two guide members; one end of one of the mounting shafts is fixedly connected with a driving gear, and the outer wall of one side of the mounting frame is fixedly connected with a motor three, the output shaft of the motor three is connected to the other end of the mounting shaft through a coupling, and the mounting frame is fixedly connected with a mounting frame, and a shaft rod member is movably connected to the mounting frame, one end of the shaft rod member is fixedly connected with a driven gear, the driven gear is meshed with the driving gear, the other end of the shaft rod member and one end of the other mounting shaft rod are fixedly connected with a linkage wheel, and the outer walls of the two linkage wheels are provided with the same transmission belt.

[0010] By providing a co-solvent adding module, the co-solvent adding module can add co-solvent as needed during use, so that the sample can be fully burned during test use, avoiding the situation that the sample is not fully burned during test combustion, thereby increasing the use effect of the device, and when adding, the staff can operate outside the combustion chamber, without taking out the crucible body for adding, thereby further increasing the convenience of operation when the device is used, and at the same time, after the test use, the co-solvent adding module can crush the solidified residue inside the crucible body, and automatically process and store it for centralized processing, thereby increasing the diversity of the device.

[0011] In a preferred embodiment, the test replacement module includes a stepper motor, which is fixedly connected to the top of the base bracket, and the output shaft of the stepper motor is connected to the replacement frame through a coupling, the inner wall of the replacement frame is fixedly connected to two inner ring plates, the inner walls of the two inner ring plates are fixedly connected to a placement rack, the tops of the two placement racks are provided with a crucible body, and the outer wall of one side of the replacement frame is fixedly connected to two mounting parts, the inner walls of the two mounting parts are movably connected to a screw rod, the outer walls of the two screw rods are movably connected to two connecting plates, one end of the four connecting plates is fixedly connected to a sealing ring, and the four sealing rings are respectively located on the outside of the two inner ring plates; an air pump is fixedly connected to the replacement frame, the output end of the air pump is fixedly connected to two connecting pipes, the output ends of the two connecting pipes are fixedly connected to connecting bins, the outer walls of the two connecting bins are fixedly connected to four airflow pipes, the output ends of the multiple airflow pipes are fixedly connected to sealing airbags, the multiple sealing airbags are respectively fixedly connected to the inner walls of the four sealing rings, and two fixed openings are opened on the top of the replacement frame, and the two connecting bins are respectively fixedly connected to the inner walls of the two fixed openings.

[0012] By providing a test replacement module, the test replacement module can replace different crucible bodies as needed during use, and then replace the co-solvents of different components set inside the crucible during use, so as to test whether different co-solvents have an impact on the test results during use, so as to further increase the accuracy of the test detection, and the test replacement module can quickly replace the crucible body during use, which increases the convenience of operation. At the same time, the test replacement module can seal the combustion bottom bin and the combustion bin after the device is operated and replaced, so as to facilitate testing.

[0013] In a preferred embodiment, the infrared detection module includes two detection chambers, both of which are fixedly connected to the inner wall of the fixed bracket, the interiors of the two detection chambers are connected through pipelines, the outer wall of the combustion chamber is provided with three gas pipe openings, wherein the interiors of the two gas pipe openings are provided with control valves, and an oxygen chamber is fixedly connected to the mounting bracket, the oxygen chamber is located below the fixed bracket, the outer wall of the oxygen chamber is fixedly connected with a delivery pump, the output end of the delivery pump is fixedly connected with two flushing pipes, the output ends of the two flushing pipes are respectively fixedly connected to the inner wall of one of the gas pipe openings and the inner wall of one of the detection chambers, one end of one of the control valves is fixedly connected with a connecting pipe, and one end of the connecting pipe is connected to the interior of one of the detection chambers; one side inner wall of the two detection chambers is movably connected to two fixed shafts, and the outer walls of the four fixed shafts are respectively fixedly connected with Two driving toothed discs and two gear parts, the two gear parts are respectively meshed with the two driving toothed discs, wherein one end of the two fixed shafts are fixedly connected with a transmission wheel, and the outer walls of the two transmission wheels are provided with the same connecting belt, one side outer wall of one detection chamber is fixedly connected with a driving motor, and the output shaft of the driving motor is connected to one end of the other fixed shaft through a coupling, the inner walls of the two detection chambers are fixedly connected with limit rings, and one side outer wall of the two limit rings is provided with a driving toothed ring, the two gear parts are respectively meshed with the two driving toothed rings, and the two driving toothed rings and one side outer wall of the two driving toothed discs are provided with multiple spoilers, and one side outer wall of the two detection chambers is opened with a detection port, one side outer wall of the fixed bracket is fixedly connected with two fixed plates, and the inner wall of the detection port and the top of the fixed plate on the same vertical plane are fixedly connected with the same infrared detector.

[0014] By providing an infrared detection module, the infrared detection module can flush the gas inside the combustion bottom chamber, the combustion chamber and the measuring chamber when in use, so as to increase the data accuracy of the subsequent test results and increase the use effect of the device. At the same time, when conducting the detection room, the infrared detection module can turbulent the gas entering the detection chamber, so that the gas moves irregularly inside the detection chamber, thereby making the gas more evenly distributed on the inner wall of the detection chamber, and the turbulence can increase the residence time of the gas inside a single detection chamber, thereby further increasing the detection accuracy.

[0015] A method for testing sulfur content in soil based on the infrared absorption principle, using the above-mentioned device for testing sulfur content in soil based on the infrared absorption principle, comprises the following steps:

[0016] Step 1: Place the prepared co-solvent and sample inside the crucible body, and start the test replacement module to seal the combustion bottom bin and the combustion bin;

[0017] Step 2: Start the delivery pump at this time, and the delivery pump delivers oxygen to the combustion chamber, the combustion bottom chamber and the inside of the detection chamber for air flow flushing, and then start the heating pipe for heating and combustion;

[0018] Step 3: During the combustion process, as the sample burns, the co-solvent adding module is started to add the combustion aid;

[0019] Step 4: The post-combustion gas enters the detection chamber, and the infrared detection module is activated to detect the carbon and sulfur content in the gas.

[0020] From the above, it can be seen that the sulfur content testing device in soil based on the infrared absorption principle provided by the present invention has the function of increasing the accuracy of detection data. When in use, the device can increase the residence time of sulfur-containing gas inside a single detection chamber, thereby increasing its detection accuracy during infrared detection, and when in use, it can make the gas more evenly distributed inside the detection chamber, further increasing the accuracy of detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a device for testing sulfur content in soil based on the infrared absorption principle proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the overall side view structure of a device for testing sulfur content in soil based on the infrared absorption principle proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of the internal cross-sectional structure of a combustion chamber of a device for testing sulfur content in soil based on the infrared absorption principle proposed by the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a co-solvent adding module of a device for testing sulfur content in soil based on the infrared absorption principle proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the combined structure of a mounting base and a dust suction pump for a device for testing sulfur content in soil based on the infrared absorption principle proposed by the present invention;

[0026] Figure 6 This is a schematic cross-sectional view of the partial structure of a co-solvent adding module of a device for testing sulfur content in soil based on the infrared absorption principle proposed by the present invention;

[0027] Figure 7 This is a schematic diagram of the test replacement module structure of a test device for sulfur content in soil based on the infrared absorption principle proposed by the present invention;

[0028] Figure 8This is a schematic diagram of the combined structure of a replacement frame and a wire rod member of a device for testing sulfur content in soil based on the infrared absorption principle proposed by the present invention;

[0029] Fig. 9 This is a schematic diagram of the structure of an infrared detection module of a device for testing sulfur content in soil based on the infrared absorption principle proposed by the present invention;

[0030] Fig.10 This is a schematic diagram of the enlarged structure of a partial infrared detection module of a device for testing sulfur content in soil based on the infrared absorption principle proposed by the present invention.

[0031] In the figure: 1, base support; 2, combustion bottom bin; 3, combustion bin; 4, heating element; 5, solvent adding module; 501, installation frame; 502, storage bin; 503, mounting seat; 504, fixed gear ring; 505, sample adding tube; 506, elastic buffer; 507, impurity removal head; 508, crushing element; 509, inner gear ring; 510, impurity removal tube; 511, motor 1; 512, gear 1; 513, motor 2; 514, gear 2; 5 15. Threaded cover; 516. Threaded connecting ring; 517. Connecting ring frame; 518. Connecting rope; 519. Delivery pipe; 520. Dust pump; 521. Motor 3; 522. Winding wheel; 523. Driving gear; 524. Transmission belt; 525. Linkage wheel; 526. Mounting shaft; 527. Guide; 528. Mounting frame; 529. Shaft member; 530. Driven gear; 531. Connecting cable; 6. Infrared detection module; 601. Detection chamber; 602, infrared detector; 603, oxygen chamber; 604, flushing pipe; 605, spoiler; 606, fixed plate; 607, limit ring; 608, drive gear ring; 609, delivery pump; 610, control valve; 611, connecting pipe; 612, drive gear plate; 613, drive motor; 614, transmission wheel; 615, connecting belt; 616, gear; 617, fixed shaft; 7, mounting bracket; 8, test replacement module; 801, inner ring Plate; 802, placement rack; 803, connecting plate; 804, connecting pipe; 805, connecting chamber; 806, crucible body; 807, sealing ring; 808, replacement frame; 809, stepper motor; 810, mounting part; 811, air flow pipe; 812, air pump; 813, screw rod; 814, sealing airbag; 9, fixing bracket; 10, connecting bracket; 11, heating pipe; 12, connecting part; 13, electric telescopic rod; 14, air path pipe opening. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] The device for testing sulfur content in soil based on the infrared absorption principle disclosed in the present invention is mainly used in scenarios where gas flows into another detection pool as it is introduced, and its residence time is difficult to control during detection, resulting in insufficient detection time, prone to data errors, and uneven distribution of gas in a single detection pool.

[0034] Reference Figure 1-Figure 10 A device for testing sulfur content in soil based on the infrared absorption principle comprises a base bracket 1, a combustion bottom bin 2 is fixedly connected to the top of the base bracket 1, a connecting bracket 10 is fixedly connected to the outer wall of the combustion bottom bin 2, and a combustion bin 3 is fixedly connected to one side outer wall of the connecting bracket 10, a mounting port is provided at the top of the combustion bin 3, and a co-solvent adding module 5 is arranged inside the mounting port, a mounting bracket 7 is fixedly connected to the outer wall of the combustion bin 3, a fixing bracket 9 is fixedly connected to the top of the fixing bracket 7, and an infrared detection module 6 is arranged inside the fixing bracket 9, a test replacement module 8 is arranged at the top of the base bracket 1, and a heater 4 is fixedly connected to the outer wall of one side of the connecting bracket 10, a heating pipe 11 is connected to the top of the heating pipe 4 through a pipeline, the heating pipe 11 is located inside the combustion bin 3, a connecting piece 12 is arranged outside the heating pipe 11, and an electric telescopic rod 13 is fixedly connected to the top of the inner wall of the combustion bin 3, and the output end of the electric telescopic rod 13 is fixedly connected to the top of the connecting piece 12.

[0035] Specifically, the solvent adding module can add solvents as needed when in use, so that the sample can be fully burned during the test, avoiding the situation where the sample is not fully burned during the test combustion, thereby affecting the accuracy of the test results; the infrared detection module 6 can flush the gas inside the device with oxygen when in use to ensure the accuracy of the detection data. At the same time, during the detection, the device can turbulent the gas inside the detection chamber 601 to increase the time that the gas stays in the single detection chamber 601, and at the same time make the gas distribution more uniform, further increasing the detection accuracy; the test replacement module 8 can replace the crucible body 806 when in use, so that the combustion test can be carried out for the solvents with different component contents when in use, and at the same time, the crucible body 806 can be quickly replaced when in use for continuous testing; the heating element 4, the connecting element 12, the electric telescopic rod 13 and the heating tube 11 are used to heat the crucible body 806 when in use, so as to perform test combustion.

[0036] Reference Figure 1-Figure 6In a preferred embodiment, the co-solvent adding module 5 includes a mounting seat 503, the mounting seat 503 is connected to the inner wall of the mounting port through a bearing, the outer wall of the mounting seat 503 is fixedly connected to a mounting frame 501, a motor 2 513 is fixedly connected to the mounting frame 501, the output shaft of the motor 2 513 is connected to a gear 2 514 through a coupling, a fixed gear ring 504 is fixedly connected to the top of the combustion chamber 3, the gear 2 514 is meshed with the fixed gear ring 504, and two circular openings are provided on the top of the mounting seat 503, and a sample adding tube 505 and a debris removal tube 510 are respectively arranged inside the two circular openings, a plurality of elastic buffers 506 are equidistantly arranged on the inner wall of the sample adding tube 505, and the inner wall of the debris removal tube 510 is fixedly connected to the fixed gear ring 504. A dust suction pump 520 is connected, and the input end of the dust suction pump 520 is connected to the debris removal head 507 through a pipeline; the outer wall of the debris removal pipe 510 is connected to the inner gear ring 509 through a bearing, and the bottom of the inner gear ring 509 is fixedly connected to three crushing pieces 508, and the debris removal head 507 is located between the three crushing pieces 508. A motor 1 511 is fixedly connected to the debris removal pipe 510, and the output shaft of the motor 1 511 is connected to a gear 1 512 through a coupling, and the gear 1 512 is meshed with the inner gear ring 509, and the output end of the dust suction pump 520 is fixedly connected to a delivery pipe 519, and the output end of the delivery pipe 519 is fixedly connected to a storage bin 502, and the storage bin 502 is fixedly connected to the inner wall of the mounting frame 501, and the sample adding pipe 505 is fixedly connected to the inner wall of the mounting frame 501. The top of the mounting frame 501 is fixedly connected with a threaded connecting ring 516, and the outer wall of the threaded connecting ring 516 is connected with a threaded cover 515 through a thread; the inner walls of both sides of the mounting frame 501 are connected with mounting shafts 526 through bearings, and the outer walls of the two mounting shafts 526 are fixedly connected with winding wheels 522, and the two winding wheels 522 are provided with connecting ropes 518, and the mounting frame 501 is provided with two guide members 527, and the outer walls of the impurity removal tube 510 and the sample adding tube 505 are fixedly connected with connecting ring frames 517, and the tops of the two connecting ring frames 517 are fixedly connected with three connecting cables 531, and the tops of the multiple connecting cables 531 are respectively fixedly connected to the bottom ends of the two connecting ropes 518, and the two connecting ropes 518 are respectively located at two The interior of a guide member 527; one end of one of the mounting shafts 526 is fixedly connected to a driving gear 523, one side outer wall of the mounting frame 501 is fixedly connected to a motor three 521, the output shaft of the motor three 521 is connected to the other end of the mounting shaft 526 through a coupling, and a mounting frame 528 is fixedly connected to the mounting frame 501, and a shaft member 529 is connected to the mounting frame 528 through a bearing, one end of the shaft member 529 is fixedly connected to a driven gear 530, the driven gear 530 is meshed with the driving gear 523, the other end of the shaft member 529 and one end of the other mounting shaft 526 are fixedly connected to a linkage wheel 525, and the outer walls of the two linkage wheels 525 are provided with the same transmission belt 524.

[0037] Specifically, during the combustion test, as the sample burns, the motor 3 521 is started as needed, and the motor 3 521 drives the installation shaft 526 to rotate, and then drives the driving gear 523 to rotate through the installation shaft 526. Since the driving gear 523 is meshed with the driven gear 530, the motor 3 521 can drive the shaft member 529 to rotate, and then cooperate with the transmission belt 524 and the linkage wheel 525 to rotate the two winding wheels 522, and the rotation directions are opposite, so that the two winding wheels 522 tighten and loosen the connecting cable 518 respectively, and then drive the multiple connecting cables 531 to rise and fall respectively. At this time, the sample adding tube 505 descends, and the impurity removal tube 510 rises, the threaded cover 515 above the sample adding tube 505 is opened, a certain amount of combustion-aiding agent is placed inside the sample adding tube 505, and the threaded cover 515 is closed. At this time, the combustion-supporting agent contacts the elastic buffer 506, and then slowly falls into the crucible body 806 to complete the addition until the combustion is completed. At this time, the motor 2 513 is started, and the motor 2 513 drives the gear 2 514 to mesh and rotate with the fixed gear ring 504, so that the mounting seat 503 drives the sample adding tube 505 to rotate to complete uniform sample addition until the combustion is completed. After use, the motor 3 521 is reversed to make the impurity removal tube 510 descend, and the crushing piece 508 contacts the solidified residue inside the crucible. At this time, the motor 1 511 is started, and the motor 1 511 drives the inner gear ring 509 and the crushing piece 508 to rotate, and drives the mounting seat 503 to rotate through the motor 2 513 to complete the residue crushing, and then the dust suction pump 520 is started, and the dust suction pump 520 conveys the crushed residue to the inside of the storage bin 502 through the impurity removal head 507 and the conveying pipe 519;

[0038] In a specific application scenario, the co-solvent adding module 5 is suitable for the test sample combustion link, that is, the co-solvent adding module 5 can add co-solvent as needed when in use, so that the sample can be fully burned during the test, avoiding the situation where the sample is not fully burned during the test combustion, thereby increasing the use effect of the device, and when adding, the staff can operate outside the combustion chamber 3, without taking out the crucible body 806 for adding, thereby further increasing the convenience of operation when the device is used, and at the same time, after the test, the co-solvent adding module 5 can crush the solidified residue inside the crucible body 806, and automatically process and store it for centralized processing, thereby increasing the diversity of the device.

[0039] Reference Figure 1 , Figure 2 , Figure 7 and Figure 8In a preferred embodiment, the test replacement module 8 includes a stepper motor 809, which is fixedly connected to the top of the base bracket 1. The output shaft of the stepper motor 809 is connected to a replacement frame 808 through a coupling. The inner wall of the replacement frame 808 is fixedly connected to two inner ring plates 801, and the inner walls of the two inner ring plates 801 are fixedly connected to a placement rack 802. The tops of the two placement racks 802 are both provided with a crucible body 806, and the outer wall of one side of the replacement frame 808 is fixedly connected to two mounting members 810, and the inner walls of the two mounting members 810 are connected to screw rods 813 through bearings, and the outer walls of the two screw rods 813 are connected to two connecting plate members 803 through threads. The four connecting plate members One end of 803 is fixedly connected with a sealing ring 807, and the four sealing rings 807 are respectively located outside the two inner ring plates 801; an air pump 812 is fixedly connected to the replacement frame 808, and the output end of the air pump 812 is fixedly connected with two connecting pipes 804, and the output ends of the two connecting pipes 804 are fixedly connected with connecting chambers 805, and the outer walls of the two connecting chambers 805 are fixedly connected with four airflow tubes 811, and the output ends of the multiple airflow tubes 811 are fixedly connected with sealing airbags 814, and the multiple sealing airbags 814 are respectively fixedly connected to the inner walls of the four sealing rings 807, and two fixed openings are opened on the top of the replacement frame 808, and the two connecting chambers 805 are respectively fixedly connected to the inner walls of the two fixed openings.

[0040] Specifically, the soil sample and the co-solvent are placed inside the crucible body 806, and the crucible body 806 is placed on the placement rack 802. At this time, the stepper motor 809 is started, and the stepper motor 809 drives the replacement frame 808 to rotate, so that the crucible body 806 is transported to between the combustion bottom bin 2 and the combustion bin 3. At this time, the screw rod 813 is rotated, and the screw rod 813 drives the connecting plate 803 to move, so that the sealing ring 807 moves to the gap between the combustion bottom bin 2, the combustion bin 3 and the inner ring plate 801. At this time, the air pump 812 is started, and the air pump 812 transports air to the inside of the connecting pipe 804, and further transports air to the inside of the connecting bin 805, so that the air passes through the airflow pipe 811 and enters the inside of the sealing airbag 814 for sealing, and the crucible body 806 can be replaced by this operation when in use;

[0041] In a specific application scenario, the test replacement module 8 is suitable for the test replacement of different co-solvents, that is, the test replacement module 8 can replace different crucible bodies 806 as needed when in use, and then replace the co-solvents of different components set inside the crucible when in use, so as to test whether different co-solvents have an impact on the test results when in use, so as to further increase the accuracy of the test detection, and the test replacement module 8 can quickly replace the crucible body 806 when in use, which increases the convenience of operation. At the same time, the test replacement module 8 can seal the combustion bottom bin 2 and the combustion bin 3 after the device is operated and replaced to facilitate testing.

[0042] Reference Figure 1 , Figure 2 , Figure 3 , Fig. 9 and Fig.10In a preferred embodiment, the infrared detection module 6 includes two detection chambers 601, both of which are fixedly connected to the inner wall of the fixed bracket 9, and the interiors of the two detection chambers 601 are connected through pipelines. The outer wall of the combustion chamber 3 is provided with three gas path pipe openings 14, wherein the interiors of the two gas path pipe openings 14 are provided with control valves 610, and an oxygen chamber 603 is fixedly connected to the mounting bracket 7, and the oxygen chamber 603 is located below the fixed bracket 9. The outer wall of the oxygen chamber 603 is fixedly connected with a delivery pump 609, and the output end of the delivery pump 609 is fixedly connected with two flushing pipes 604, and the output ends of the two flushing pipes 604 are respectively fixedly connected to the inner wall of one of the gas path pipe openings 14 and the inner wall of one of the detection chambers 601, one end of one of the control valves 610 is fixedly connected with a connecting pipe 611, and one end of the connecting pipe 611 is connected to the interior of one of the detection chambers 601; the inner walls of one side of the two detection chambers 601 are connected to two fixed shafts 617 through bearings, and the outer walls of the four fixed shafts 617 are respectively fixedly connected with two drive shafts 617. The movable toothed disc 612 is meshed with two gear members 616, and the two gear members 616 are respectively meshed with the two driving toothed discs 612, wherein one end of the two fixed shafts 617 are fixedly connected to the transmission wheels 614, and the outer walls of the two transmission wheels 614 are provided with the same connecting belt 615, and the outer wall of one side of one detection chamber 601 is fixedly connected to the driving motor 613, and the output shaft of the driving motor 613 is connected to one end of the other fixed shaft 617 through a coupling, and the inner walls of the two detection chambers 601 are fixedly connected to the limiting ring 607, One side outer wall of the two limit rings 607 is provided with a driving gear ring 608, and two gear parts 616 are respectively meshed with the two driving gear rings 608. One side outer wall of the two driving gear rings 608 and the two driving gear plates 612 are provided with multiple spoilers 605. One side outer wall of the two detection chambers 601 is opened with a detection port, and one side outer wall of the fixed bracket 9 is fixedly connected to two fixed plates 606, and the inner wall of the detection port and the top of the fixed plate 606 on the same vertical plane are fixedly connected with the same infrared detector 602.

[0043] Specifically, when in use, one of the control valves 610 is opened, and the delivery pump 609 is started. The delivery pump 609 delivers the oxygen in the oxygen chamber 603 to the inside of the flushing pipe 604, and then delivers it to the combustion bottom chamber 2, the combustion chamber 3 and the detection chamber 601 through the flushing pipe 604 to flush the residual gas inside them. After flushing, the control valve 610 is closed, and the other control valve 610 is opened, so that the combustion chamber 3 and the detection chamber 601 are connected through the connecting pipe 611. After the test combustion, the gas enters the detection chamber 601. At this time, the infrared detector 602 is started, and the drive motor 613 is started at the same time. The drive motor 613 drives the drive gear disc 612 to rotate, and the drive motor 613 drives the drive gear disc 612 to rotate. The driving toothed disc 612 is meshed with the gear member 616, and the gear member 616 is meshed with the driving toothed ring 608, so that the driving motor 613 can simultaneously drive the driving toothed disc 612 and the driving toothed ring 608 to rotate, and then cooperate with the transmission wheel 614 and the connecting belt 615 to make the driving toothed disc 612 and the driving toothed ring 608 inside the two detection chambers 601 rotate synchronously, and then drive the spoiler 605 to rotate, so that the gas moves irregularly inside the detection chamber 601, so that the gas is more evenly distributed on the inner wall of the detection chamber 601, so that the sulfur content is detected by the infrared detector 602, and then the gas enters the other detection chamber 601 for carbon content monitoring;

[0044] In a specific application scenario, the infrared detection module 6 is suitable for the carbon and sulfur content detection link, that is, the infrared detection module 6 can flush the gas inside the combustion bottom bin 2, the combustion bin 3 and the measuring chamber when in use, so as to increase the data accuracy of the subsequent test results and increase the use effect of the device. At the same time, when conducting the detection chamber 601, the infrared detection module 6 can turbulently flow the gas entering the detection chamber 601, so that the gas moves irregularly inside the detection chamber 601, thereby making the gas more evenly distributed on the inner wall of the detection chamber 601, and the turbulence can increase the residence time of the gas inside the single detection chamber 601, thereby further increasing the detection accuracy.

[0045] A method for testing sulfur content in soil based on the infrared absorption principle, using the above-mentioned device for testing sulfur content in soil based on the infrared absorption principle, comprises the following steps:

[0046] Step 1: Place the soil sample and the co-solvent inside the crucible body 806, and place the crucible body 806 on the placement rack 802. At this time, start the stepper motor 809, which drives the replacement frame 808 to rotate, so as to transport the crucible body 806 to between the combustion bottom bin 2 and the combustion bin 3. At this time, rotate the screw rod 813, which drives the connecting plate 803 to move, so that the sealing ring 807 moves to the gap between the combustion bottom bin 2, the combustion bin 3 and the inner ring plate 801. At this time, start the air pump 812, which transports air to the inside of the connecting pipe 804, and further transports air to the inside of the connecting bin 805, so that the air passes through the airflow pipe 811 and enters the inside of the sealing airbag 814 for sealing;

[0047] Step 2, open one of the control valves 610, start the delivery pump 609, the delivery pump 609 delivers the oxygen inside the oxygen bin 603 to the inside of the flushing pipe 604, and then delivers it to the combustion bottom bin 2, the combustion bin 3 and the detection chamber 601 through the flushing pipe 604 to flush the residual gas inside them. After flushing, close the control valve 610, and open another control valve 610, so that the combustion bin 3 and the detection chamber 601 are connected through the connecting pipe 611, and then start the heating element 4, the heating element 4 heats the heating pipe 11, and start the electric telescopic rod 13 so that the electric telescopic rod 13 drives the heating pipe 11 to move to the outside of the crucible body 806, so as to heat and burn the soil sample and the co-solvent in the crucible;

[0048] Step 3: During the combustion test, as the sample burns, the motor 3 521 is started as needed, and the motor 3 521 drives the installation shaft 526 to rotate, and then drives the driving gear 523 to rotate through the installation shaft 526. Since the driving gear 523 is meshed with the driven gear 530, the motor 3 521 can drive the shaft member 529 to rotate, and then cooperate with the transmission belt 524 and the linkage wheel 525 to rotate the two winding wheels 522, and the rotation directions are opposite, so that the two winding wheels 522 tighten and loosen the connecting cable 518 respectively, and then drive the multiple connecting cables 531 to rise and fall respectively. At this time, the sample adding tube 505 descends, and the impurity removal tube 510 rises, the threaded cover 515 above the sample adding tube 505 is opened, and a certain amount of combustion aid is placed inside the sample adding tube 505, and the threaded cover 515 is closed. At this time, the combustion aid contacts the elastic buffer 506, and then slowly falls into the crucible body 806 to complete the addition until the combustion is completed;

[0049] Step 4, after the test combustion, the gas enters the detection chamber 601, and the infrared detector 602 is started at this time, and the drive motor 613 is started at the same time. The drive motor 613 drives the drive gear disc 612 to rotate. Since the drive gear disc 612 is meshed with the gear part 616, and the gear part 616 is meshed with the drive gear ring 608, the drive motor 613 can simultaneously drive the drive gear disc 612 and the drive gear ring 608 to rotate, and then cooperate with the transmission wheel 614 and the connecting belt 615 to make the drive gear disc 612 and the drive gear ring 608 inside the two detection chambers 601 rotate synchronously, and then drive the spoiler 605 to rotate, so that the gas moves irregularly inside the detection chamber 601, so that the gas is more evenly distributed on the inner wall of the detection chamber 601, so as to detect the sulfur content through the infrared detector 602, and then the gas enters the other detection chamber 601 for carbon content monitoring.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for testing sulfur content in soil based on the infrared absorption principle, comprising a base support (1), characterized in that: The top of the base bracket (1) is fixedly connected to a combustion bottom bin (2), the outer wall of the combustion bottom bin (2) is fixedly connected to a connecting bracket (10), and the outer wall of one side of the connecting bracket (10) is fixedly connected to a combustion bin (3), the top of the combustion bin (3) is provided with a mounting opening, and a co-solvent adding module (5) is arranged inside the mounting opening, the outer wall of the combustion bin (3) is fixedly connected to a mounting bracket (7), the top of the mounting bracket (7) is fixedly connected to a fixing bracket (9), and an infrared detection module is arranged inside the fixing bracket (9). Block (6), a test replacement module (8) is arranged on the top of the base bracket (1), and a heating element (4) is fixedly connected to the outer wall of one side of the connecting bracket (10), the top of the heating element (4) is connected to a heating pipe (11) through a pipeline, the heating pipe (11) is located inside the combustion chamber (3), a connecting piece (12) is arranged on the outside of the heating pipe (11), and an electric telescopic rod (13) is fixedly connected to the top of the inner wall of the combustion chamber (3), and the output end of the electric telescopic rod (13) is fixedly connected to the top of the connecting piece (12).

2. The device for testing sulfur content in soil based on the infrared absorption principle according to claim 1 is characterized in that: The co-solvent adding module (5) comprises a mounting seat (503), the mounting seat (503) is movably connected to the inner wall of the mounting opening, the outer wall of the mounting seat (503) is fixedly connected to a mounting frame (501), the mounting frame (501) is fixedly connected to a second motor (513), the output shaft of the second motor (513) is connected to a second gear (514) via a coupling, the top of the combustion chamber (3) is fixedly connected to a fixed gear ring (504), the second gear (514) is meshed with the fixed gear ring (504), and the top of the mounting seat (503) is provided with two circular openings, the insides of the two circular openings are respectively provided with a sample adding tube (505) and a debris removal tube (510), the inner wall of the sample adding tube (505) is equidistantly provided with a plurality of elastic buffers (506), the inner wall of the debris removal tube (510) is fixedly connected to a dust suction pump (520), and the input end of the dust suction pump (520) is connected to a debris removal head (507) via a pipeline.

3. The device for testing sulfur content in soil based on the infrared absorption principle according to claim 2 is characterized in that: The outer wall of the impurity removal pipe (510) is movably connected to an inner gear ring (509), and the bottom of the inner gear ring (509) is fixedly connected to three crushing pieces (508). The impurity removal head (507) is located between the three crushing pieces (508). The impurity removal pipe (510) is fixedly connected to a motor 1 (511), and the output shaft of the motor 1 (511) is connected to a gear 1 (512) via a coupling. The gear 1 (512) is meshed with the inner gear ring (509). The output end of the dust suction pump (520) is fixedly connected to a delivery pipe (519), and the output end of the delivery pipe (519) is fixedly connected to a storage bin (502). The storage bin (502) is fixedly connected to the inner wall of the mounting frame (501). The top of the sample adding pipe (505) is fixedly connected to a threaded connection ring (516), and the outer wall of the threaded connection ring (516) is movably connected to a threaded cover (515).

4. The device for testing sulfur content in soil based on the infrared absorption principle according to claim 3 is characterized in that: The inner walls on both sides of the installation frame (501) are movably connected with installation shafts (526), ​​the outer walls of the two installation shafts (526) are fixedly connected with winding wheels (522), and the two winding wheels (522) are provided with connecting ropes (518). Two guide members (527) are provided on the installation frame (501), and the outer walls of the impurity removal tube (510) and the sample adding tube (505) are fixedly connected with connecting ring frames (517), and the tops of the two connecting ring frames (517) are fixedly connected with three connecting cables (531), and the top ends of the multiple connecting cables (531) are respectively fixedly connected to the bottom ends of the two connecting cables (518), and the two connecting cables (518) are respectively located inside the two guide members (527).

5. The device for testing sulfur content in soil based on the infrared absorption principle according to claim 4 is characterized in that: One end of one of the mounting shafts (526) is fixedly connected to a driving gear (523), and one side outer wall of the mounting frame (501) is fixedly connected to a motor three (521), and the output shaft of the motor three (521) is connected to the other end of the mounting shaft (526) through a coupling, and a mounting frame (528) is fixedly connected to the mounting frame (501), and a shaft member (529) is movably connected to the mounting frame (528), and one end of the shaft member (529) is fixedly connected to a driven gear (530), and the driven gear (530) is meshed with the driving gear (523), and the other end of the shaft member (529) and one end of the other mounting shaft (526) are fixedly connected to a linkage wheel (525), and the outer walls of the two linkage wheels (525) are provided with the same transmission belt (524).

6. The device for testing sulfur content in soil based on the infrared absorption principle according to claim 5 is characterized in that: The test replacement module (8) comprises a stepper motor (809), the stepper motor (809) is fixedly connected to the top of the base support (1), the output shaft of the stepper motor (809) is connected to a replacement frame (808) via a coupling, the inner wall of the replacement frame (808) is fixedly connected to two inner ring plates (801), the inner walls of the two inner ring plates (801) are fixedly connected to a placement rack (802), and the tops of the two placement racks (802) are both provided with a crucible. The body (806) is provided with a replacement frame (808), and the outer wall of one side of the replacement frame (808) is fixedly connected to two mounting members (810), the inner walls of the two mounting members (810) are movably connected to a screw member (813), the outer walls of the two screw members (813) are movably connected to two connecting plate members (803), one end of the four connecting plate members (803) is fixedly connected to a sealing ring member (807), and the four sealing ring members (807) are respectively located outside the two inner ring plates (801).

7. The device for testing sulfur content in soil based on the infrared absorption principle according to claim 6 is characterized in that: The replacement frame (808) is fixedly connected to an air pump (812), the output end of the air pump (812) is fixedly connected to two connecting tubes (804), the output ends of the two connecting tubes (804) are fixedly connected to connecting chambers (805), the outer walls of the two connecting chambers (805) are fixedly connected to four airflow tubes (811), the output ends of the multiple airflow tubes (811) are fixedly connected to sealing airbags (814), the multiple sealing airbags (814) are respectively fixedly connected to the inner walls of the four sealing rings (807), and the top of the replacement frame (808) is provided with two fixed openings, the two connecting chambers (805) are respectively fixedly connected to the inner walls of the two fixed openings.

8. The device for testing sulfur content in soil based on the infrared absorption principle according to claim 7 is characterized in that: The infrared detection module (6) comprises two detection chambers (601), the two detection chambers (601) are fixedly connected to the inner wall of the fixed bracket (9), the interiors of the two detection chambers (601) are connected via a pipeline, the outer wall of the combustion chamber (3) is provided with three gas path pipe openings (14), wherein the interiors of two gas path pipe openings (14) are provided with control valves (610), and an oxygen chamber (603) is fixedly connected to the mounting bracket (7), and the oxygen chamber (603) is located below the fixed bracket (9). The outer wall of the oxygen chamber (603) is fixedly connected to a delivery pump (609), and the output end of the delivery pump (609) is fixedly connected to two flushing pipes (604). The output ends of the two flushing pipes (604) are respectively fixedly connected to the inner wall of one of the gas path pipe openings (14) and the inner wall of one of the detection chambers (601). One end of one of the control valves (610) is fixedly connected to a connecting pipe (611), and one end of the connecting pipe (611) is connected to the interior of one of the detection chambers (601).

9. The device for testing sulfur content in soil based on the infrared absorption principle according to claim 8, characterized in that: The inner walls of one side of the two detection chambers (601) are movably connected to two fixed shafts (617), and the outer walls of the four fixed shafts (617) are respectively fixedly connected to two driving toothed discs (612) and two gear members (616), and the two gear members (616) are respectively meshed with the two driving toothed discs (612), wherein one end of the two fixed shafts (617) is fixedly connected to a transmission wheel (614), and the outer walls of the two transmission wheels (614) are provided with a same connecting belt (615), and the outer wall of one side of one of the detection chambers (601) is fixedly connected to a driving motor (613), and the output shaft of the driving motor (613) is connected to one end of the other fixed shaft (617) through a coupling. The ends are connected, the inner walls of the two detection chambers (601) are fixedly connected to limit rings (607), one side outer walls of the two limit rings (607) are provided with driving gear rings (608), two gear members (616) are respectively meshed with the two driving gear rings (608), one side outer walls of the two driving gear rings (608) and the two driving gear disks (612) are provided with a plurality of spoilers (605), and one side outer wall of the two detection chambers (601) is provided with a detection port, one side outer wall of the fixed bracket (9) is fixedly connected to two fixed plates (606), and the inner wall of the detection port and the top of the fixed plate (606) on the same vertical plane are fixedly connected to the same infrared detector (602).

10. A method for testing sulfur content in soil based on the infrared absorption principle, using the device for testing sulfur content in soil based on the infrared absorption principle as described in claim 9, characterized in that: The steps include: Step 1: Place the prepared co-solvent and sample inside the crucible body (806), and start the test replacement module (8) to seal the combustion bottom chamber (2) and the combustion chamber (3); Step 2: At this time, the delivery pump (609) is started, and the delivery pump (609) delivers oxygen to the combustion chamber (3), the combustion bottom chamber (2) and the detection chamber (601) for air flow flushing, and then the heating pipe (11) is started for heating and combustion; Step 3: During the combustion process, as the sample burns, the co-solvent adding module (5) is started to add the co-solvent; Step 4: The post-combustion gas enters the detection chamber (601), and the infrared detection module (6) is activated to detect the carbon and sulfur content in the gas.

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