An electronic analytical instrument for measuring the index of soil pollution

Abstract

The application discloses an electronic analysis instrument for measuring soil pollution index, and relates to the field of soil detection and analysis, comprising a moving frame, a rotating mechanism is installed in the middle of the moving frame, and the rotating mechanism comprises a rotating rod. In the application, the first motor works to drive the rotating rod to rotate, the rotating table completes 180-degree rotation, the sample on the placing mechanism is switched to the detection station, the second motor works to drive the rotating shaft to rotate, the fixed cylinder and the material blocking plate rotate, during the first 10 rotations, the soil sample in the first sample box falls quantitatively through the opening cavity and enters the sample disc through the material guide plate, at this time, the second sample box does not have material falling through the corresponding sealed cavity, and the soil pollution index can be normally detected, after the 10th time, the opening cavity of the second sample box corresponds to the sample disc, the first sample box corresponds to the sealed cavity, and only the standard sample falls, so that the instrument can be automatically calibrated after 10 times of detection, manual frequent operation is not needed, and the measurement efficiency and accuracy of the soil pollution index are improved.

Description

Technical Field

[0001] This invention relates to the field of soil testing and analysis technology, specifically to an electronic analytical instrument for measuring soil pollution index. Background Technology

[0002] Soil, as the core carrier of the ecosystem, is characterized by the concealment, accumulation, and long-term nature of its pollution. Soil pollution mainly originates from industrial emissions, agricultural activities, and urban construction, threatening the safety of agricultural products and ecological health. Therefore, it is necessary to use electronic analytical instruments to measure the soil pollution index.

[0003] For example, a sampling and detection device and method for heavy metal residues in arable land disclosed in CN117804824A includes a main frame, a multi-layer soil sampling mechanism, and a soil testing mechanism. The multi-layer soil sampling mechanism is slidably mounted on the main frame, and the soil testing mechanism is located on one side of the lower part of the multi-layer soil sampling mechanism. The multi-layer soil sampling mechanism includes a lifting frame that is slidably mounted on the main frame, a drill cylinder that is rotatably mounted on the lifting frame, a drive motor that is fixedly mounted on the lifting frame and provides power for the rotation of the drill cylinder, and a push cylinder that is mounted at the bottom of the main frame and near the soil testing mechanism.

[0004] In existing technologies, during long-term continuous detection, instruments are affected by factors such as changes in ambient temperature and humidity, aging of detection unit components, and fluctuations in circuit stability. These factors affect the extraction efficiency and detection response value of pollutants, and the detection accuracy is prone to drift. If not calibrated in time, the detection data of subsequent soil samples will continue to deviate from the true value, leading to misjudgment of the degree of soil pollution. Moreover, the drift in instrument accuracy cannot be detected in time, resulting in a waste of time and samples. Summary of the Invention

[0005] The purpose of this invention is to provide an electronic analytical instrument for measuring soil pollution index, so as to solve the problem mentioned in the background art that the detection accuracy is prone to drift, and if not calibrated in time, the subsequent soil sample detection data will continue to deviate from the true value, leading to misjudgment of the degree of soil pollution.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an electronic analytical instrument for measuring soil pollution index, comprising a movable frame, a rotating mechanism installed in the middle of the movable frame, the rotating mechanism including a rotating rod, the outer side of the rotating rod rotating with the middle of the movable frame, a rotating platform fixedly connected to the top of the rotating rod, a placement mechanism installed on the bottom side of the rotating platform, two support plates rotatably connected to the outer side of the rotating platform, the bottom ends of the support plates fixedly connected to the top side of the movable frame, a detection protection mechanism installed on the outer side of one support plate, and a sample switching mechanism and a compaction mechanism installed on the outer side of the other support plate, the sample switching mechanism including a feeding box, the feeding box being provided with... There are two feeding boxes, one side of which is fixedly connected. A rotating shaft is rotatably connected to the middle of each feeding box. One end of each rotating shaft is fixedly connected. A fixed cylinder is fixedly connected to the outside of each rotating shaft. A baffle plate is fixedly connected to the outside of each fixed cylinder. The baffle plates are divided into two groups. Each group of baffle plates is arranged in a uniform ring array with the center line of the rotating shaft as the axis. A fixed plate is fixedly connected to the end of each group of baffle plates. The fixed plate is fixedly connected to the inside of the feeding box. A cavity of fixed size is formed between two adjacent baffle plates, the outside of the fixed cylinder, and the two fixed plates. The other end of one of the rotating shafts passes through the feeding box and is equipped with a second belt assembly.

[0007] Preferably, a belt box is installed on the outside of the second belt assembly. One side of the belt box is fixedly connected to one side of one of the feed boxes. The other side of both feed boxes is fixedly connected to a fixing plate. A second motor is fixedly connected to one side of the fixing plate. The output end of the second motor passes through one side of the belt box and is connected to the second belt assembly.

[0008] Preferably, the bottom ports of the two feeding boxes are fixedly connected to a guide plate, the top port of one feeding box is fixedly connected to a second sample box, and the top port of the other feeding box is fixedly connected to a first sample box.

[0009] Preferably, a first motor is fixedly connected to the bottom of the rotating table, and a first belt assembly is installed between the output end of the first motor and the rotating rod.

[0010] Preferably, the bottom side of the rotating table has two positioning holes, and the top of the moving frame is fixedly connected to an electric cylinder. One end of the electric cylinder is fixedly connected to a push rod, which is inserted into the positioning hole.

[0011] Preferably, the detection and protection mechanism includes a protective cover, a lifting strip slidably connected to one side of the protective cover, a mounting base fixedly connected to one end of the lifting strip, one end of the mounting base fixedly connected to one side of the support plate, a detector fixedly connected to the other end of the mounting base, and a lifting strip fixedly connected to the top of the rotating table. There are two lifting strips, and one end of the two lifting strips abuts against the bottom side of the protective cover.

[0012] Preferably, a telescopic rod is fixedly connected to one side of the protective cover, and a fixing block is fixedly connected to the other end of the telescopic rod. One side of the fixing block is fixedly connected to one side of the mounting base. A compression spring is installed between the end of the telescopic rod and the fixing block, and the compression spring is sleeved on the outside of the telescopic rod.

[0013] Preferably, the placement mechanism includes a fixed frame, one side of which is fixedly connected to the bottom side of the rotating table. A guide groove is provided on the rotating table, and a moving block is slidably connected to the inner side of the guide groove. A second electric push rod is fixedly connected to one side of the moving block, and one side of the second electric push rod is fixedly connected to the other side of the fixed frame. A sample tray is fixedly connected to the top side of the moving block.

[0014] Preferably, the compaction mechanism includes a fixed frame, one end of which is fixedly connected to the outside of the support plate, and the other end of which is fixedly connected to a top plate. A first electric push rod is fixedly connected to one side of the top plate, and one end of the first electric push rod passes through the top plate and is fixedly connected to a compaction disc. A guide rod is fixedly connected to the top side of the compaction disc, and the outside of the guide rod is slidably connected to the top plate.

[0015] Preferably, it also includes a control system, which comprises a main control unit, a data computing unit, and a logic calibration unit;

[0016] The main control unit is used to receive external signals, parse the signals according to the preset process and output control commands, and coordinate the synchronous work of the actuator drive structure, data calculation unit and logic calibration unit. The data calculation unit converts the raw detection signal output by the detector into a quantifiable soil pollution index, calculates the concentration of pollutants based on the principle of spectral detection, compares it with the risk screening value, and outputs the rating result. The logic calibration unit is used to correct detection deviations and trigger the protection mechanism when the calibration is abnormal.

[0017] The logic calibration unit includes a coefficient correction module and an anomaly protection module. The coefficient correction module calculates the deviation and corrects the calibration coefficient required for the contamination index calculation based on the theoretical concentration value and actual detection value of the standard sample. The anomaly protection module monitors the detection deviation during the standard sample calibration process in real time. When an anomaly occurs, it triggers an alarm and locks the detection process.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In this invention, the first motor operates, driving the rotating rod to rotate, and the rotating table completes a 180-degree rotation, switching the sample on the placement mechanism to the detection station. The first sample box has 10 open cavity chambers and 1 sealed cavity in its corresponding feeding box, and the second sample box has 1 open cavity chamber and 10 sealed cavities in its corresponding feeding box. The second motor operates, driving the rotating shaft to rotate, and the fixed cylinder and baffle plate rotate. During the first 10 rotations, the soil sample from the first sample box falls quantitatively through the open cavity chamber and enters the sample tray through the guide plate. At this time, there is no material feeding into the sealed cavity corresponding to the second sample box, and the soil pollution index can be detected normally. After the 10th rotation, the open cavity chamber of the second sample box corresponds to the sample tray, and the sealed cavity of the first sample box corresponds to the sample tray. Only the standard sample is fed, realizing automatic instrument calibration after 10 tests, eliminating the need for frequent manual operation, and improving the efficiency and accuracy of soil pollution index measurement.

[0020] 2. In this invention, when the rotating stage rotates to switch the sample position, the lifting strip abuts against the bottom side of the protective cover, pushing the protective cover to slide up along the lifting strip, exposing the bottom space, so that the sample tray can be smoothly sent into the protective cover; when the sample tray is in place, the lifting strip rotates with the rotating stage to disengage from the protective cover, the compression spring elastically resets, and with the guidance of the telescopic rod, drives the protective cover to fall and reset, covering the detector and the sample tray, isolating external interference such as dust and light. After the test is completed, the rotating stage rotates again, and the lifting strip lifts the protective cover again, facilitating the delivery of the sample tray. This realizes automatic delivery and delivery of the sample tray, isolating external interference and providing a stable environment for the detector to accurately detect the soil pollution index.

[0021] 3. In this invention, the second electric push rod operates, pushing the moving block to move, and the sample tray moves accordingly. First, it moves to the area below the sample switching mechanism to receive the sample, and then moves to the area below the compaction mechanism. The first electric push rod operates, driving the sample tray to move downwards and compact the soil sample in the sample tray, making the sample structure stable. This avoids the problem of uneven contact of the detection probe due to loose sample, reduces detection error, and improves the accuracy of detection results. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first structure of an electronic analytical instrument for measuring soil pollution index according to the present invention;

[0023] Figure 2 This is a schematic diagram of the second structure of an electronic analytical instrument for measuring soil pollution index according to the present invention;

[0024] Figure 3 This is a schematic diagram of the sample switching mechanism connection structure of an electronic analytical instrument for measuring soil pollution index according to the present invention.

[0025] Figure 4 This is a schematic diagram showing the disassembled structure of the sample switching mechanism of an electronic analytical instrument for measuring soil pollution index according to the present invention.

[0026] Figure 5 This is a schematic diagram of the external connection structure of the rotating shaft of an electronic analytical instrument for measuring soil pollution index according to the present invention.

[0027] Figure 6 This is a schematic diagram of the connection structure between the rotating mechanism and the detection and protection mechanism of an electronic analytical instrument for measuring soil pollution index according to the present invention.

[0028] Figure 7 This is a schematic diagram of the first disassembled structure of the rotating mechanism and the detection and protection mechanism of an electronic analytical instrument for measuring soil pollution index according to the present invention;

[0029] Figure 8 This is a schematic diagram of the second disassembled structure of the rotating mechanism and the detection and protection mechanism of an electronic analytical instrument for measuring soil pollution index according to the present invention;

[0030] Figure 9 This is a schematic diagram of the compaction mechanism connection structure of an electronic analytical instrument for measuring soil pollution index according to the present invention;

[0031] Figure 10 This is a system block diagram of the control system in an electronic analytical instrument for measuring soil pollution index according to the present invention.

[0032] In the diagram: 1. Moving frame; 2. Rotating mechanism; 21. Rotating table; 22. First motor; 23. First belt assembly; 24. Rotating rod; 25. Electric cylinder; 26. Push rod; 27. Guide groove; 28. Support plate; 3. Sample switching mechanism; 31. First sample box; 32. Second sample box; 33. Feed box; 34. Guide plate; 35. Fixing plate; 36. Belt box; 37. Second belt assembly; 38. Second motor; 39. Rotating shaft; 310. Fixing plate; 311. Baffle plate; 312. Fixing cylinder; 4. Compaction. Mechanism; 41. Fixing frame; 42. Top plate; 43. Guide rod; 44. First electric push rod; 45. Compacting plate; 5. Detection and protection mechanism; 51. Protective cover; 52. Mounting base; 53. Lifting bar; 54. Detector; 55. Telescopic rod; 56. Compression spring; 57. Fixing block; 6. Placement mechanism; 61. Fixing frame; 62. Second electric push rod; 63. Moving block; 64. Sample tray; 7. Main control unit; 8. Data calculation unit; 9. Logic calibration unit; 91. Coefficient correction module; 92. Abnormal protection module. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Refer to Figure 1 - Figure 10 As shown: An electronic analytical instrument for measuring soil pollution index is divided into two parts: a mechanical actuator and a control system. The mechanical actuator is responsible for sample delivery, station switching, compaction, and anti-interference protection, while the control system is responsible for command coordination, data calculation, deviation correction, and anomaly protection.

[0035] I. Technical solutions and principles of mechanical actuation structures.

[0036] The mechanical execution structure consists of a rotating mechanism 2, a sample switching mechanism 3, a compaction mechanism 4, a detection and protection mechanism 5, and a placement mechanism 6. These mechanisms work together to achieve automated multi-station operation.

[0037] 1. Sample switching mechanism 3: Enables switching between 10 soil tests and 1 standard calibration. The core design is the differentiated configuration of the cavity opening or sealing. The sealed cavity of the feeding box 33 connected to the first sample box 31 corresponds completely to the opening of the feeding box 33 connected to the second sample box 32, ensuring that only a single type of sample is fed during switching.

[0038] Working principle: The second motor 38 starts and drives the rotating shaft 39 to rotate through the second belt assembly 37. The rotating shaft 39 drives the fixed cylinder 312 and the baffle plate 311 to rotate synchronously. The cavity rotates with the baffle plate 311 to the discharge port. During the first 10 rotations, the opening of the first sample box 31 is aligned with the discharge port in sequence, and the soil sample falls quantitatively into the sample tray 64 through the guide plate 34. The sealed cavity of the second sample box 32 is aligned with the discharge port, and no standard sample falls. During the 11th rotation, the sealed cavity of the first sample box 31 is aligned with the discharge port, and no soil is discharged. The opening of the second sample box 32 is aligned with the discharge port, and the standard sample falls quantitatively into the sample tray 64 through the guide plate 34, triggering the calibration process.

[0039] 2. Rotating mechanism 2: The sample tray 64 of the compacted soil sample or standard sample is transferred from the sampling and compaction station to the testing station. After the switching is completed, the electric cylinder 25 pushes the top rod 26 to insert into the positioning hole on the bottom side of the rotating table 21 to lock the position of the rotating table 21 and prevent it from shaking during testing.

[0040] 3. Compaction Mechanism 4: This mechanism solves the problem of uneven contact of the detection probe caused by loose samples. After the sample tray 64 moves directly below the compaction mechanism 4, the first electric push rod 44 extends, driving the compaction tray 45 to move vertically downwards to compact the soil sample in the sample tray 64.

[0041] 4. Detection protection mechanism 5: Isolates external interference and enables automatic sample entry and exit. When the rotating table 21 rotates, the lifting bar 53 abuts against the bottom side of the protective cover 51, pushing the protective cover 51 to slide up along the lifting bar 53, exposing the detection space, and the sample tray 64 smoothly enters. After the sample tray 64 is in place, the rotating table 21 stops rotating, the lifting bar 53 separates from the protective cover 51, the compression spring 56 elastically resets the telescopic rod 55 provides guidance, and drives the protective cover 51 to fall and close, covering the detector 54 and the sample tray 64, isolating dust and light interference. After the detection is completed, the rotating table 21 rotates again, the lifting bar 53 lifts the protective cover 51 again, and the sample tray 64 is sent out of the detection space with the rotating table 21.

[0042] 5. Placement mechanism 6: Responsible for transporting sample tray 64 across workstations. The second electric push rod 62 pushes the moving block 63 to slide along the guide groove 27 on the rotating table 21, moving the sample tray 64 to the bottom of the sample switching mechanism 3 to receive quantitative soil or standard samples. After the sample is received, the moving block 63 moves the sample tray 64 to the bottom of the compaction mechanism 4 to complete the compaction.

[0043] II. Technical solution and principle of the control system: The control system consists of a main control unit 7, a data calculation unit 8, and a logic calibration unit 9. It achieves accurate detection and calibration based on the principle of spectral detection and deviation correction logic.

[0044] 1. The main control unit 7 receives external signals and human-machine interaction instructions, analyzes the signals according to the preset process, and outputs control instructions to coordinate the mechanical execution structure, data calculation unit 8, and logic calibration unit 9 to work synchronously and ensure the orderly execution of the entire process.

[0045] 2. Data calculation unit 8 converts the original signal into a pollution index. The core principle is spectral detection. The concentration of pollutants is proportional to the effective signal value. The original electrical signal output by the detector 54 is converted into a quantifiable soil pollution index through a formula.

[0046] 3. Logic calibration unit 9, which solves accuracy drift and realizes automatic calibration, is the core of the control system. It dynamically corrects the calibration coefficient K through standard sample detection.

[0047] (1) Coefficient correction module 91 dynamically corrects the K value, reads the preset theoretical concentration of the standard sample and the actual detection concentration of the standard sample by the detector 54, judges the current accuracy drift degree by formula, and corrects the calibration coefficient according to the coefficient correction rule.

[0048] (2) Abnormal protection module 92: To avoid erroneous detection, when the standard sample calibration deviation rate exceeds the limit, the protection action is triggered immediately.

[0049] III. Working principle of the whole process: soil sample testing cycle and automatic calibration cycle. After calibration, the equipment automatically returns to the soil sample testing cycle and starts the next round of testing.

[0050] IV. Summary of core innovations.

[0051] Mechanical structural innovation: Through the differentiated design of two feeding boxes with 33 cavities, it can automatically switch between 10 soil tests and 1 standard calibration without manual intervention;

[0052] Multi-station collaboration: Rotating mechanism 2 performs 180° switching and placement mechanism 6 transports materials across stations, realizing integrated flow of feeding, compaction and testing;

[0053] Protection and Accuracy Enhancement: The detection protection mechanism 5 isolates interference, and the compaction mechanism 4 prevents the sample from loosening, providing double protection for detection accuracy;

[0054] Dynamic calibration logic: Based on the deviation rate calculation and K-value correction of standard samples, it solves accuracy drift in real time and protects against erroneous detection.

[0055] Example 2: Refer to Figures 1-9 As shown: An electronic analytical instrument for measuring soil pollution index includes a mobile frame 1. A rotating mechanism 2 is installed in the middle of the mobile frame 1. The rotating mechanism 2 includes a rotating rod 24, which rotates around the middle of the mobile frame 1. A rotating platform 21 is fixedly connected to the top of the rotating rod 24. A placement mechanism 6 is installed on the bottom side of the rotating platform 21. Two support plates 28 are rotatably connected to the outer side of the rotating platform 21. The bottom ends of the support plates 28 are fixedly connected to the top side of the mobile frame 1. A detection protection mechanism 5 is installed on the outer side of one support plate 28, and a sample switching mechanism 3 and a compaction mechanism 4 are installed on the outer side of the other support plate 28. The sample switching mechanism 3 includes two feeding boxes 33, and one side of each feeding box 33 is fixedly connected to... Next, a rotating shaft 39 is rotatably connected to the middle of each of the two feeding boxes 33. One end of each of the two rotating shafts 39 is fixedly connected to a fixed cylinder 312. A baffle plate 311 is fixedly connected to the outside of each of the two fixed cylinders 312. The multiple baffle plates 311 are divided into two groups. Each group of baffle plates 311 is arranged in a uniform ring array with the center line of the rotating shaft 39 as the axis. The end of each group of baffle plates 311 is fixedly connected to a fixed disk 310. The fixed disk 310 is fixedly connected to the inside of the feeding box 33. A cavity of fixed size is formed between two adjacent baffle plates 311, the outside of the fixed cylinder 312, and the two fixed disks 310. The other end of one of the rotating shafts 39 passes through the feeding box 33 and is equipped with a second belt assembly 37.

[0056] A belt box 36 is installed on the outside of the second belt assembly 37. One side of the belt box 36 is fixedly connected to one side of one of the feeding boxes 33. The other side of both feeding boxes 33 is fixedly connected to a fixing plate 35. A second motor 38 is fixedly connected to one side of the fixing plate 35. The output end of the second motor 38 passes through one side of the belt box 36 and is connected to the second belt assembly 37. A guide plate 34 is fixedly connected to the bottom port of both feeding boxes 33. A second sample box 32 is fixedly connected to the top port of one feeding box 33, and a first sample box 31 is fixedly connected to the top port of the other feeding box 33. A first motor 22 is fixedly connected to the bottom of the rotating table 21. A first belt assembly 23 is installed between the output end of the first motor 22 and the rotating rod 24. Two positioning holes are opened on the bottom side of the rotating table 21. An electric cylinder 25 is fixedly connected to the top of the moving frame 1. A push rod 26 is fixedly connected to one end of the electric cylinder 25 and is inserted into the positioning hole.

[0057] In this embodiment, the first belt assembly 23 and the second belt assembly 37 are both composed of two pulleys and a conveyor belt. The first motor 22 is started, and the first belt assembly 23 drives the rotating rod 24 to rotate. The rotating rod 24 drives the rotating table 21 to rotate, driving the rotating table 21 to rotate 180 degrees, which facilitates the switching of the sample to the detection station for operation. After the switching is completed, the electric cylinder 25 can push the top rod 26 to insert into the positioning hole at the bottom of the rotating table 21 to position and fix the rotating table 21.

[0058] Each set of baffles 311 divides the outer sides of the two fixed discs 310, the fixed cylinder 312, and the inner side of the feeding box 33 into 11 cavities of fixed size. Of the 11 cavities inside the feeding box 33 connected to the second sample box 32, one cavity is open, and the rest are sealed. Of the 11 cavities inside the feeding box 33 connected to the first sample box 31, 10 cavities are open, and the remaining cavity is sealed. This sealed cavity corresponds to the position of a single open cavity below the second sample box 32. Soil samples are placed inside the first sample box 31, and standard samples are placed inside the second sample box 32. The second motor 38 starts, driving the rotating shaft 39 to rotate via the second belt assembly 37. The rotating shaft 39 drives the fixed cylinder 312 and the baffles 311 to rotate. Because the feeding boxes 311 and 32 are connected... The openings of the inner cavities of the first sample box 31 and the second sample box 32 are designed differently. During rotation, the soil sample inside the first sample box 31 is quantitatively fed through the inner cavity of the feed box 33 connected to it. During the process of feeding through the 10 open cavities 10 times in sequence, the inner cavities of the feed box 33 connected to the second sample box 32 are all sealed cavities. At this time, only the soil sample is fed into the sample tray 64 for measuring the pollution index in the soil sample. After 10 feedings, the standard sample inside the second sample box 32 is fed through the only open cavity in the feed box 33 connected to it. At this time, the inner cavity of the feed box 33 connected to the first sample box 31 rotates to the corresponding sealed cavity, and only the standard sample is fed into the sample tray 64. This allows for quantitative switching of different samples, so that after 10 sample tests, the standard sample is automatically tested, and the periodic calibration of the instrument is completed.

[0059] Example 3: Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, the detection and protection mechanism 5 includes a protective cover 51. A lifting strip 53 is slidably connected to one side of the protective cover 51. A mounting base 52 is fixedly connected to one end of the lifting strip 53. One end of the mounting base 52 is fixedly connected to one side of the support plate 28. A detector 54 is fixedly connected to the other end of the mounting base 52. A lifting strip 53 is fixedly connected to the top of the rotating table 21. There are two lifting strips 53, and one end of each lifting strip 53 abuts against the bottom side of the protective cover 51. A telescopic rod 55 is fixedly connected to one side of the protective cover 51. A fixing block 57 is fixedly connected to the other end of the telescopic rod 55. One side of the fixing block 57 is fixedly connected to one side of the mounting base 52. A compression spring 56 is installed between the end of the telescopic rod 55 and the fixing block 57. The compression spring 56 is sleeved on the outside of the telescopic rod 55.

[0060] In this embodiment, when the rotating stage 21 rotates to switch the sample position, the lifting bar 53 abuts against the bottom side of the protective cover 51, pushing the protective cover 51 to slide up along the lifting bar 53, exposing the bottom space, so that the sample tray 64 is sent into the interior of the protective cover 51. The lifting bar 53 rotates until it separates from the bottom side of the protective cover 51. Under the action of the compression spring 56 and the telescopic rod 55, the protective cover 51 will return to its original position, covering the detector 54 and the sample tray 64, so that the detector 54 can detect the sample. The detector 54 is an X-ray fluorescence analyzer. After the detection is completed, the rotating stage 21 continues to rotate, pushing the protective cover 51 upward, thereby sending the sample tray 64 out of the protective cover 51, realizing the automatic feeding and sending out of the sample tray 64, and reducing external interference during the detection process.

[0061] Example 4: According to Figure 7 , Figure 8 and Figure 9 As shown, the placement mechanism 6 includes a fixed frame 61, one side of which is fixedly connected to the bottom side of the rotating table 21. The rotating table 21 has a guide groove 27, and a moving block 63 is slidably connected to the inner side of the guide groove 27. A second electric push rod 62 is fixedly connected to one side of the moving block 63, and one side of the second electric push rod 62 is fixedly connected to the other side of the fixed frame 61. A sample tray 64 is fixedly connected to the top side of the moving block 63. The compaction mechanism 4 includes a fixed frame 41, one end of which is fixedly connected to the outer side of the support plate 28, and the other end of which is fixedly connected to a top plate 42. A first electric push rod 44 is fixedly connected to one side of the top plate 42, and one end of the first electric push rod 44 passes through the top plate 42 and is fixedly connected to a compaction plate 45. A guide rod 43 is fixedly connected to the top side of the compaction plate 45, and the outer side of the guide rod 43 is slidably connected to the top plate 42.

[0062] In this embodiment, the second electric push rod 62 extends and retracts, pushing the moving block 63 to slide within the guide groove 27. This causes the sample tray 64 to move below the sample switching mechanism 3 to receive the sample, and then move to below the compaction mechanism 4. The first electric push rod 44 extends, driving the compaction plate 45 to move downwards to compact the soil sample on the sample tray 64. The first electric push rod 44 then shortens, driving the compaction plate 45 to move upwards and away from the sample tray 64. The guide rod 43 moves with the compaction plate 45 to ensure the verticality of the compaction plate 45, thus compacting the soil sample, making the sample structure more stable, reducing detection errors caused by loose samples during the detection process, and improving the accuracy of the detection results.

[0063] Example 5: According to Figure 10As shown, it also includes a control system, which includes a main control unit 7, a data calculation unit 8, and a logic calibration unit 9. The main control unit 7 is used to receive external signals, including sensor feedback and human-machine interaction instructions, analyze the signals according to a preset process and output control instructions, and coordinate the synchronous operation of the actuator drive structure, the data calculation unit 8, and the logic calibration unit 9 to ensure that the instrument executes the entire process from mechanical action to data output in an orderly manner. The data calculation unit 8 converts the raw detection signal output by the detector 54 into a quantifiable soil pollution index, calculates the concentration of pollutants based on the principle of spectral detection, converts the calculated value into national standard units, compares it with the risk screening value, and outputs the rating result, which includes no exceedance, slight exceedance, and serious exceedance.

[0064] The principle of spectral detection is based on Beer-Lambert's law, which states that the concentration of pollutants is directly proportional to the effective signal value. The calculation formula is as follows:

[0065] ;

[0066] Where C represents the concentration of pollutants, Indicates the valid signal value. The value represents the detection signal of the standard sample, and K represents the real-time calibration coefficient provided by the logic calibration unit 9.

[0067] The logic calibration unit 9 is used to correct detection deviations and triggers a protection mechanism when calibration is abnormal, ensuring that the soil pollution index detection results are stable and reliable in the long term.

[0068] The logic calibration unit 9 includes a coefficient correction module 91 and an anomaly protection module 92. The coefficient correction module 91 calculates the deviation and corrects the calibration coefficient K required for the pollution index calculation based on the theoretical concentration value and the actual detection value of the standard sample, so as to ensure that the subsequent soil sample detection value is close to the true concentration.

[0069] When calculating the deviation and correcting the calibration coefficient K required for the contamination index calculation, first read the preset theoretical concentration value of the standard sample. Calculate the detection deviation rate Correct the calibration coefficient if Allowing for a preset deviation, the new calibration coefficient , This represents the old coefficients before the correction. If a preset deviation is allowed, the anomaly protection module 92 will be triggered.

[0070] Deviation rate The calculation formula is: ;

[0071] in, This indicates the theoretical concentration of the standard sample. This indicates the actual test value of the standard sample.

[0072] The anomaly protection module 92 monitors the detection deviation during the standard sample calibration process in real time. When an anomaly occurs that exceeds the allowable range, it triggers an alarm and locks the detection process to prevent the use of inaccurate calibration coefficients to calculate the soil pollution index and improve the accuracy of the test results.

[0073] The operating method and working principle of this device are as follows: Place the soil sample to be tested into the first sample box 31, and the standard calibration sample into the second sample box 32. Start the second motor 38, which drives the rotating shaft 39 to rotate via the second belt assembly 37. The fixed cylinder 312 and the baffle plate 311 rotate. During rotation, the soil sample in the first sample box 31 will quantitatively fall through the open cavity and into the sample tray 64 conveyed by the placement mechanism 6 below via the guide plate 34. At this time, no sample is discharged into the corresponding sealed cavity of the second sample box 32, completing the quantitative loading of a single soil sample. When the second electric push rod 62 operates, it pushes the moving block 63 to slide along the guide groove 27 on the rotating table 21, causing the sample tray 64 containing the soil sample to move from below the sample switching mechanism 3 to directly below the compaction mechanism 4. The first electric push rod 44 operates, causing the compaction plate 45 to move vertically downward, compacting the loose soil sample in the sample tray 64 to stabilize the sample structure. After compaction is completed, the first electric push rod 44 shortens, causing the compaction plate 45 to reset. The second electric push rod 62 operates again, pulling the sample tray 64 back to the initial position on the rotating table 21.

[0074] The first motor 22 operates, driving the rotating rod 24 to rotate. The rotating platform 21 then rotates 180 degrees, transferring the sample tray 64 containing the compacted soil sample to the area below the detection and protection mechanism 5. During the rotation of the rotating platform 21, the lifting bar 53 abuts against the bottom side of the protective cover 51, pushing the protective cover 51 to rise and expose the detection space. When the sample tray 64 is fully inside the protective cover 51 and corresponds to the detection position of the detector 54, the rotating platform 21 stops rotating, the lifting bar 53 separates from the protective cover 51, and the compression spring 56 causes the protective cover 51 to fall and close, covering the detector 54 and the sample tray 64. Subsequently, the detector 54 starts to detect the pollution index of the soil sample. After the detection is completed, the first motor 22 operates again, driving the rotating platform 21 to rotate. The protective cover 51 is lifted, sending the tested sample tray 64 out of the protective cover 51, and cleaning the residual sample on the sample tray 64.

[0075] After 10 soil sample tests are completed, the second motor 38 continues to drive the rotating shaft 39 to rotate. At this time, the feeding box 33 connected to the first sample box 31 rotates to the corresponding position of the sealed cavity, and the feeding box 33 connected to the second sample box 32 rotates to the open cavity. The standard sample falls into the sample tray 64 through the guide plate 34. The standard sample is tested by the detector 54, and the instrument calibration is automatically completed. After calibration, the equipment can continue to perform the next round of soil sample testing.

[0076] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electronic analytical instrument for measuring soil pollution index, comprising a mobile frame (1), characterized in that: A rotating mechanism (2) is installed in the middle of the movable frame (1). The rotating mechanism (2) includes a rotating rod (24). The outside of the rotating rod (24) rotates with the middle of the movable frame (1). A rotating platform (21) is fixedly connected to the top of the rotating rod (24). A placement mechanism (6) is installed on the bottom side of the rotating platform (21). Two support plates (28) are rotatably connected to the outside of the rotating platform (21). The bottom end of the support plate (28) is fixedly connected to the top side of the movable frame (1). The outer side of one of the support plates (28) is... A detection protection mechanism (5) is installed on the side, and a sample switching mechanism (3) and a compaction mechanism (4) are installed on the outside of another support plate (28). The sample switching mechanism (3) includes a feeding box (33). There are two feeding boxes (33). One side of the two feeding boxes (33) is fixedly connected. The middle of the two feeding boxes (33) is rotatably connected to a rotating shaft (39). One end of the two rotating shafts (39) is fixedly connected. The outside of the two rotating shafts (39) is fixedly connected to a fixed cylinder (312). All the external parts of the fixed cylinder (312) are fixedly connected to baffles (311). The baffles (311) are divided into two groups. Each group of baffles (311) is arranged in a uniform ring around the center line of the rotating shaft (39). The ends of each group of baffles (311) are fixedly connected to a fixed plate (310). The fixed plate (310) is fixedly connected to the inside of the feed box (33). A fixed size is formed between two adjacent baffles (311), the outside of the fixed cylinder (312), and the two fixed plates (310). The cavity has a second belt assembly (37) installed at the other end of one of the rotating shafts (39) through the feeding box (33). The bottom ports of the two feeding boxes (33) are fixedly connected to a guide plate (34). The top port of one feeding box (33) is fixedly connected to a second sample box (32), and the top port of the other feeding box (33) is fixedly connected to a first sample box (31). The first sample box (31) contains soil samples, and the second sample box (32) contains standard samples. It also includes a control system, which includes a main control unit (7), a data calculation unit (8), and a logic calibration unit (9). The main control unit (7) is used to receive external signals, analyze the signals according to the preset process and output control commands, coordinate the actuator drive structure, data calculation unit (8) and logic calibration unit (9) to work synchronously. The data calculation unit (8) converts the original detection signal output by the detector (54) into a quantifiable soil pollution index. Based on the principle of spectral detection, it calculates the concentration of pollutants, compares it with the risk screening value, and outputs the rating result. The logic calibration unit (9) is used to correct the detection deviation and trigger the protection mechanism when the calibration is abnormal. The logic calibration unit (9) includes a coefficient correction module (91) and an anomaly protection module (92). The coefficient correction module (91) calculates the deviation and corrects the calibration coefficient required for the pollution index calculation based on the theoretical concentration value and actual detection value of the standard sample. The anomaly protection module (92) monitors the detection deviation in the standard sample calibration process in real time. When an anomaly occurs, it triggers an alarm and locks the detection process.

2. The electronic analytical instrument for measuring soil pollution index according to claim 1, characterized in that: The second belt assembly (37) is externally mounted with a belt box (36). One side of the belt box (36) is fixedly connected to one side of one of the feed boxes (33). The other side of the two feed boxes (33) is fixedly connected to a fixing plate (35). One side of the fixing plate (35) is fixedly connected to a second motor (38). The output end of the second motor (38) passes through one side of the belt box (36) and is connected to the second belt assembly (37).

3. The electronic analytical instrument for measuring soil pollution index according to claim 1, characterized in that: The bottom of the rotating platform (21) is fixedly connected to a first motor (22), and a first belt assembly (23) is installed between the output end of the first motor (22) and the rotating rod (24).

4. The electronic analytical instrument for measuring soil pollution index according to claim 1, characterized in that: Two positioning holes are provided on the bottom side of the rotating platform (21). An electric cylinder (25) is fixedly connected to the top of the moving frame (1). A push rod (26) is fixedly connected to one end of the electric cylinder (25). The push rod (26) is inserted into the positioning hole.

5. The electronic analytical instrument for measuring soil pollution index according to claim 1, characterized in that: The detection and protection mechanism (5) includes a protective cover (51), a lifting strip (53) is slidably connected to one side of the protective cover (51), a mounting base (52) is fixedly connected to one end of the lifting strip (53), one end of the mounting base (52) is fixedly connected to one side of the support plate (28), and a detector (54) is fixedly connected to the other end of the mounting base (52). The top of the rotating table (21) is fixedly connected to the lifting strip (53), and there are two lifting strips (53). One end of the two lifting strips (53) abuts against the bottom side of the protective cover (51).

6. The electronic analytical instrument for measuring soil pollution index according to claim 5, characterized in that: A telescopic rod (55) is fixedly connected to one side of the protective cover (51), and a fixing block (57) is fixedly connected to the other end of the telescopic rod (55). One side of the fixing block (57) is fixedly connected to one side of the mounting base (52). A compression spring (56) is installed between the end of the telescopic rod (55) and the fixing block (57). The compression spring (56) is sleeved on the outside of the telescopic rod (55).

7. The electronic analytical instrument for measuring soil pollution index according to claim 1, characterized in that: The placement mechanism (6) includes a fixed frame (61), one side of which is fixedly connected to the bottom side of the rotating table (21). A guide groove (27) is provided on the rotating table (21). A moving block (63) is slidably connected to the inner side of the guide groove (27). A second electric push rod (62) is fixedly connected to one side of the moving block (63). One side of the second electric push rod (62) is fixedly connected to the other side of the fixed frame (61). A sample tray (64) is fixedly connected to the top side of the moving block (63).

8. The electronic analytical instrument for measuring soil pollution index according to claim 1, characterized in that: The compaction mechanism (4) includes a fixed frame (41), one end of which is fixedly connected to the outside of the support plate (28), and the other end of which is fixedly connected to a top plate (42). A first electric push rod (44) is fixedly connected to one side of the top plate (42), and one end of the first electric push rod (44) passes through the top plate (42) and is fixedly connected to a compaction plate (45). A guide rod (43) is fixedly connected to the top side of the compaction plate (45), and the outside of the guide rod (43) is slidably connected to the top plate (42).

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