Soil detection device for land pollution detection

Abstract

The invention relates to the technical field of soil monitoring equipment, in particular to a soil detection device for land pollution detection, which comprises a soil detector, the soil detector is existing detection equipment and is used as a main body of the detection device, and universal wheels are mounted at four corners of the bottom of a shell of the soil detector; the guide plate is arranged at the lower part of the shell of the soil detector, a U-shaped sliding groove is formed in the guide plate, a loading part for placing a reagent tube is assembled in the sliding groove of the sliding plate in a sliding manner, and a pretreatment mechanism for pretreating detected soil is arranged on one side of the top of the shell of the soil detector. The pretreatment mechanism (with crushing, screening and drying functions) and the detection mechanism are integrated, so that the whole-process operation from sampling to detection is realized, the rapid detection requirement in an outdoor complex environment is met, and the convenience and timeliness of soil detection are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil monitoring equipment, and more particularly, to a soil detection device for land pollution detection. Background Art

[0002] With the rapid development of industrialization and agricultural activities, the problem of soil pollution has become a global focus. As the basis for crop growth and ecological balance, soil pollution not only threatens food security but may also affect human health through the food chain. The traditional soil detection process relies on laboratory operations and requires multiple steps such as sampling, air-drying, grinding, sieving, reagent mixing, and instrumental analysis, which are time-consuming and laborious and difficult to adapt to complex outdoor environments.

[0003] Although portable soil detection devices have made some progress in recent years, such as the application of technologies like spectral analysis and electrochemical sensing, which can achieve some in-situ detection functions, they still struggle to meet the requirements of rapidity, precision, and full automation. Especially in outdoor scenarios, where soil sample states are diverse (such as semi-dry and semi-wet, caked, muddy, etc.), existing soil detection devices have certain defects: First, most portable devices lack an integrated pretreatment module and rely on manual labor to complete soil crushing, drying, and homogenization, resulting in low outdoor operation efficiency and easy introduction of contamination. Second, traditional devices mostly adopt a single-sample step-by-step processing method, with uneven grinding particle size, and the sieve is easily blocked by high-moisture-content soil or hard particles, and the remaining soil lumps directly affect the sampling and sieving problems mentioned in the subsequent detection accuracy. Finally, before detection, the soil powder needs to be fully mixed with the reagent, but existing devices mostly rely on manual shaking or simple stirring, with low mixing efficiency and easy generation of local concentration deviation, further increasing the risk of human error. These defects will all restrict the real-time and accuracy of soil pollution detection. Summary of the Invention

[0004] To overcome the above-mentioned drawbacks of the prior art, the present invention provides a soil detection device for land pollution detection.

[0005] Technical solution: A soil detection device for land pollution detection includes a soil detector, which is an existing detection equipment and serves as the main body of the detection device. Universal wheels are installed at the four corners of the bottom of the soil detector shell; it also includes a guide plate at the lower part of the soil detector shell, and a "U"-shaped slide groove is provided on the guide plate. A loading part for placing a reagent tube is slidably assembled in the slide groove of the guide plate, and a pretreatment mechanism for pre-treating the detection soil is provided on one side of the top of the shell of the soil detector; the pretreatment mechanism includes a lifting cylinder slidably installed on the upper part of the soil detector shell, the outer wall of the lifting cylinder is provided with an elastic card ball, and the soil detector shell is provided with a card groove adapted to the card ball, and the lifting cylinder is clamped on the soil detector shell through the card ball, and a clamping frame is rotatably installed on the bottom of the lifting cylinder, and the clamping frame is provided with clamping grooves for limiting sampling tubes at circumferential intervals. A second motor is fixedly installed on the inner wall of the lowering cylinder through a support plate, and the output shaft of the second motor is connected to the clamping frame. The output shaft of the second motor passes through the end of the clamping frame and is rotatably connected to the turntable through a one-way bearing. The second motor can only drive the turntable to rotate in one direction through the one-way bearing. The turntable is circumferentially spaced with feed openings that are the same in number as the clamping grooves of the clamping frame. The turntable and the clamping frame are in sliding contact. Initially, the feed openings of the turntable and the clamping grooves of the clamping frame are staggered with each other. The bottom surface of the turntable is fixedly connected to the mounting plate by bolts, and the mounting plate is circumferentially spaced with screen cylinders corresponding to the feed openings, and a screen is provided on the bottom surface of the screen cylinder. A crushing mechanism for crushing the sampled soil in the sampling tube is provided in the lifting cylinder; a reagent mechanism for adding detection reagents to the pre-treatment sampling tube is provided on the top of the soil detector shell, and a detection mechanism for detecting the reactive soil liquid in the sampling tube is also provided on the soil detector.

[0006] In addition, it is particularly preferred that the loading part includes a motor 1, a loading cylinder and a vibrator, and the bottom of the soil detector shell is slidably mounted with a motor 1 at the slide groove of the guide plate, and the output shaft of the motor 1 is fixedly connected to the loading cylinder, and the output shaft of the motor 1 is located in the slide groove of the guide plate. The loading cylinder is circumferentially spaced with clamps that are the same in number as the discharge ports, and the clamps of the loading cylinder are used for loading reagent tubes for soil and reagent reactions, and a vibrator is fixedly mounted outside the shell of the motor 1, and the vibrator is used to vibrate the reagent tubes on the loading cylinder.

[0007] In addition, it is particularly preferred that the crushing mechanism includes a sliding plate slidably connected to the top inner wall of the lifting cylinder. There is a sliding damping between the sliding plate and the lifting cylinder, and the sliding resistance between the sliding plate and the lifting cylinder is less than the buckling force between the elastic ball and the soil detector housing. A first operating rod is fixedly connected to the top of the plate body of the sliding plate. The first operating rod slidably penetrates through the top surface of the cylinder body of the lifting cylinder. A circular connecting pipe is fixedly installed at the bottom of the sliding plate. The bottom of the pipe body of the connecting pipe is communicated with installation frames having the same number as the clamping grooves of the clamping brackets through a bifurcated pipe. The installation frames respectively correspond to the clamping grooves on the clamping brackets. The installation frame is a frame body with an open bottom. A crushing rod is rotatably connected to the installation frame. A crushing claw is provided at the rod end of the crushing rod. The height of the crushing claw of the crushing rod is higher than that of the clamping bracket. A first gear is fixedly connected to the rotating shaft of each crushing rod. A third motor is fixedly installed at the center of the bottom surface of the sliding plate. A second gear is fixedly installed on the output shaft of the third motor. The teeth on the edge of the second gear penetrate through the circumferential installation frame and mesh with the corresponding first gear.

[0008] In addition, it is particularly preferred that a hot air blower is fixedly installed at the top of the cylinder body of the lifting cylinder. The hot air blower penetrates through the lifting cylinder through a telescopic pipe and is communicated to the connecting pipe. An expansion cover is provided at the bottom of the installation frame. The expansion cover covers the top of the clamping groove of the clamping bracket. The expansion cover is located in the sampling pipe within the installation frame and the clamping groove of the clamping bracket.

[0009] In addition, it is particularly preferred that a handle for facilitating the pushing device is fixedly installed on the rear side wall of the soil detector housing. Two door panels are symmetrically hinged and installed on the front side of the soil detector housing. A placement rack is arranged inside the door panels. Bases for placing sampling pipes and reagent tubes are respectively provided on the placement rack. The placement rack is used for conveniently carrying sampling pipes and reagent tubes during outdoor soil detection.

[0010] In addition, it is particularly preferred that the reagent mechanism includes a reagent kit fixedly installed on one side of the soil detector housing. Reagents that react with the sample soil are stored in the reagent kit. A sliding frame is slidably installed inside the housing of the soil detector where the reagent kit is located. A second operating rod is fixedly connected to the top of the sliding frame. The operating rod slidably penetrates through the housing of the soil detector. A spring is arranged between the sliding frame and the housing of the soil detector. A drip tube is assembled inside the sliding frame. The drip tube branches into multiple groups of liquid outlet pipes that penetrate through the bottom of the sliding frame. The multiple groups of liquid outlet pipes of the drip tube respectively correspond to the reagent tubes loaded on the loading cylinder. A liquid pump is installed at the top of the sliding frame. The inlet of the liquid pump is communicated to the bottom of the reagent kit through a pipeline. The outlet of the liquid pump is communicated with the drip tube.

[0011] In addition, it is particularly preferred that the detection mechanism includes a rotating plate, a push rod, a connecting frame and a detection probe. The rotating plate is rotatably installed on the front side of the housing of the soil detector. The push rod slidably penetrates the rotating plate. A convex block is fixedly provided on one side of the rod body of the push rod. A slot adapted to the convex block is provided at the connection of the rotating plate and the push rod. A connecting frame is fixedly installed on the lower end rod body of the push rod. A detection probe is installed on the connecting frame. The detection probe is connected to the detection and analysis module of the soil detector through a wire. The detection probe is used to detect the sample liquid that has reacted in the reagent tube loaded on the loading cylinder.

[0012] In addition, it is particularly preferred that a filter cylinder is installed around the probe head of the detection probe. The surface of the filter cylinder is provided with dense micropores. The filter cylinder is used to prevent the sediment and impurities in the reagent tube sample liquid from directly contacting the detection probe.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. By integrating the pretreatment mechanism (including functions of crushing, screening and drying) and the detection mechanism into one, the present invention realizes the whole process operation from sampling to detection, meets the rapid detection requirements in outdoor complex environments, and improves the convenience and timeliness of soil detection.

[0015] 2. The present invention can integrate a reagent adding mechanism on the soil detector, and cooperate with a liquid pump to accurately control the addition amount of the reagent, ensuring that each soil sample can fully react with an equal amount of reagent, and enhancing the reliability and representativeness of the detection results.

[0016] 3. The present invention is equipped with a vibrator, which accelerates the chemical reaction process between the soil sample and the reagent through vibration, ensures the consistency of the mixture of the two, reduces the errors caused by manual operation, and further improves the detection accuracy of the sample soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0018] Figure 2 It is a schematic diagram of the state when the door panel of the soil detector of the present invention is unfolded for use.

[0019] Figure 3 It is a schematic diagram of components such as the soil detector, the guide plate and the loading cylinder of the present invention.

[0020] Figure 4 It is a position relationship diagram of the soil detector, the lifting cylinder, the clamping frame and the discharging port of the present invention.

[0021] Figure 5 It is a cooperation relationship diagram of components such as the sliding plate, the connecting pipe, the installation frame and the crushing rod of the present invention.

[0022] Figure 6 Schematic diagram of the lifting cylinder, clamping bracket, motor II, one-way bearing and turntable of the present invention.

[0023] Figure 7 Exploded view of the lifting cylinder and turntable of the present invention.

[0024] Figure 8 Schematic diagram of specific components of the crushing mechanism of the present invention.

[0025] Figure 9 Schematic diagram when the reagent mechanism of the present invention adds reagent to the reagent tube in the loading cylinder.

[0026] Figure 10 Schematic diagram of components such as the reagent kit, sliding frame, dropper and liquid pump of the present invention.

[0027] Figure 11 Schematic diagram of the detection mechanism of the present invention for detecting the reagent tube in the loading cylinder.

[0028] Figure 12 Schematic diagram of specific components of the detection mechanism of the present invention.

[0029] In the figure: 1 - Soil detector, 101 - Feeding port, 2 - Universal wheel, 3 - Door panel, 31 - Placing rack, 4 - Sampling tube, 41 - Reagent tube, 5 - Handle, 6 - Guide plate, 61 - Slide groove, 7 - Loading part, 71 - Motor I, 72 - Loading cylinder, 73 - Vibrator, 8 - Pretreatment mechanism, 81 - Lifting cylinder, 811 - Ball catch, 82 - Clamping bracket, 83 - Motor II, 831 - Support plate, 84 - One-way bearing, 85 - Turntable, 851 - Discharge port, 86 - Mounting plate, 87 - Sieve cylinder, 9 - Crushing mechanism, 91 - Slide plate, 92 - Operating rod I, 93 - Connecting pipe, 94 - Mounting frame, 95 - Crushing rod, 96 - Gear I, 97 - Motor III, 98 - Gear II, 10 - Hot air blower, 11 - Telescopic pipe, 12 - Telescopic cover, 13 - Reagent mechanism, 131 - Reagent kit, 132 - Sliding frame, 133 - Operating rod II, 134 - Spring, 135 - Dropper, 136 - Liquid pump, 14 - Detection mechanism, 141 - Rotating plate, 142 - Push rod, 143 - Convex block, 144 - Connecting frame, 145 - Detection probe, 15 - Filter cylinder. Detailed implementation mode

[0030] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the orientation terms such as up, down, left, right, front, back, inside and outside that appear or will appear in the text of the present invention are only based on the drawings of the present invention, and they do not specifically limit the present invention.

[0031] Example 1: A soil detection device for land pollution detection, as Figures 2-7As shown in the figure, it includes a soil detector 1. The soil detector 1 is an existing detection device and serves as the main body of this detection device. Universal wheels 2 are installed at the four corners of the bottom of the housing of the soil detector 1. It also includes a guide plate 6 at the lower part of the housing of the soil detector 1. A "U"-shaped chute 61 is opened on the guide plate 6. A loading member 7 for placing a reagent tube 41 is slidably assembled in the chute 61 of the guide plate 6. On one side of the top of the housing of the soil detector 1, there is a pretreatment mechanism 8 for pretreating and detecting soil. The pretreatment mechanism 8 includes a lifting cylinder 81 slidably installed on the upper part of the housing of the soil detector 1. Elastic clamping balls 811 are provided on the outer wall of the lifting cylinder 81. A card slot adapted to the clamping balls 811 is opened on the housing of the soil detector 1. The lifting cylinder 81 is clamped on the housing of the soil detector 1 through the clamping balls 811. A clamping frame 82 is rotatably installed at the inner bottom of the lifting cylinder 81. Clamping grooves for limiting the sampling tube 4 are circumferentially spaced on the clamping frame 82. A second motor 83 is fixedly installed on the inner wall of the lifting cylinder 81 through a support plate 831. The output shaft of the second motor 83 is connected to the clamping frame 82. The output shaft of the second motor 83 passes through the end of the clamping frame 82 and is rotatably connected to a turntable 85 through a one-way bearing 84. The second motor 83 can only drive the turntable 85 to rotate in one direction through the one-way bearing 84. Material discharge openings 851 with the same number as the clamping grooves of the clamping frame 82 are circumferentially spaced on the turntable 85. The turntable 85 is in sliding contact with the clamping frame 82. Initially, the material discharge openings 851 of the turntable 85 and the clamping grooves of the clamping frame 82 are staggered from each other. The bottom surface of the turntable 85 is fixedly connected to a mounting plate 86 through bolts. Sieve cylinders 87 corresponding to the material discharge openings 851 are circumferentially assembled on the mounting plate 86. A sieve mesh is provided on the bottom surface of the sieve cylinder 87. A crushing mechanism 9 for crushing the sampled soil in the sampling tube 4 is provided in the lifting cylinder 81. On the top of the housing of the soil detector 1, there is a reagent mechanism 13 for adding a detection reagent into the pretreated sampling tube 4. A detection mechanism 14 for detecting the reaction soil liquid in the sampling tube 4 is also provided on the soil detector 1. The sampling tube 4 with the sampled soil sample is loaded from the feeding port 101 onto the clamping frame 82, and the second motor 83 is cooperated to drive the clamping frame 82 to intermittently switch the clamping grooves in the positive direction. At this time, the turntable 85 rotates synchronously with the clamping frame 82, so that the sampling tube 4 and the material discharge openings 851 are kept staggered from each other. After the clamping frame 82 is loaded with the sampling tubes 4, the crushing structure can be used to crush the samples in the sampling tubes 4. After the sample soil is crushed, the loading member 7 is slid on the guide plate 6 to align with the lifting cylinder 81, and then the lifting cylinder 81 is pressed down against the elastic force of the elastic clamping balls 811, so that the sieve cylinder 87 at the bottom of the lifting cylinder 81 is aligned with the loading member 7. Subsequently, the second motor 83 can only drive the clamping frame 82 to rotate in the reverse direction. At this time, the turntable 85 does not rotate with the clamping frame 82, so that the sampling tubes 4 on the clamping frame 82 are aligned with the material discharge openings 851, and the pretreated sample soil falls into the loading member 7. Then, by adjusting the loading member 7 in the soil detector 1, the subsequent operations of adding reagents and detecting can be completed, so that the sample soil can directly complete the coherent operations of pretreatment and detection at the sampling site.

[0032] As Figure 3 、 Figure 5and Figure 8 As shown in Figure 8 , the crushing mechanism 9 includes a sliding plate 91 slidably connected to the top inner wall of the lifting cylinder 81. There is a sliding damping between the sliding plate 91 and the lifting cylinder 81, and the sliding resistance between the sliding plate 91 and the lifting cylinder 81 is less than the buckling force between the elastic clamping balls 811 and the housing of the soil detector 1. A first operating rod 92 is fixedly connected to the top of the plate body of the sliding plate 91. The first operating rod 92 slidably penetrates the top surface of the cylinder body of the lifting cylinder 81. A ring-shaped connecting pipe 93 is fixedly installed at the bottom of the sliding plate 91. The bottom of the pipe body of the connecting pipe 93 is communicated with installation frames 94 having the same number as the clamping grooves of the clamping frame 82 through a bifurcated pipe. The installation frames 94 respectively correspond to the clamping grooves on the clamping frame 82. The installation frames 94 are box bodies with open bottoms. Crushing rods 95 are rotatably connected to the installation frames 94. Crushing claws are provided at the rod ends of the crushing rods 95. The height of the crushing claws of the crushing rods 95 is higher than that of the clamping frame 82. Gear ones 96 are fixedly connected to the rotating shafts of the crushing rods 95. A third motor 97 is fixedly installed at the center of the bottom surface of the sliding plate 91. A second gear 98 is fixedly installed on the output shaft of the third motor 97. The teeth on the edge of the second gear 98 penetrate through the circumferential installation frame 94 and mesh with the corresponding gear ones 96. The third motor 97 drives the rotation of the crushing rods 95 on the gear ones 96 through the meshing of the second gear 98. Cooperating with the tester holding the first operating rod 92 and then sliding the crushing rods 95 in the crushing mechanism 9 up and down, the crushing rods 95 can extend into the corresponding sampling pipes 4 to fully crush the sampled soil in the sampling pipes 4.

[0033] As Figures 3-5 shown in Figures 3-5 , a hot air blower 10 is fixedly installed at the top of the cylinder body of the lifting cylinder 81. The hot air blower 10 penetrates through the lifting cylinder 81 through a telescopic pipe 11 and is communicated to the connecting pipe 93. A telescopic cover 12 is provided at the bottom of the installation frame 94. The telescopic cover 12 covers the top of the clamping groove of the clamping frame 82. The telescopic cover 12 is located in the installation frame 94 and the sampling pipe 4 in the clamping groove of the clamping frame 82, so that the hot air generated by the hot air blower 10 can be introduced into the sampling pipe 4 through the connecting pipe 93 and the telescopic cover 12, and the soil in the sampling pipe 4 can be dried to meet the detection requirements.

[0034] As Figure 1 and Figure 2 shown in Figure 1 and Figure 2 , a handle 5 for facilitating the pushing device is fixedly installed on the rear side wall of the housing of the soil detector 1. Two door panels 3 are symmetrically hinged and installed on the front side of the housing of the soil detector 1. A placement rack 31 is arranged on the inner side of the door panel 3. Bases for placing the sampling pipe 4 and the reagent pipe 41 are respectively provided on the placement rack 31. The placement rack 31 is used for conveniently carrying the sampling pipe 4 and the reagent pipe 41 during outdoor soil detection, improving the usability of the detection device.

[0035] When using this device to detect soil outdoors, the detector first pushes the device through the handle 5 and moves the entire soil detector 1 to the target sampling area by means of the universal wheels 2 at the bottom. After opening the door panel 3 on the front side of the soil detector 1, the pre-prepared sampling tube 4 and reagent tube 41 are taken out from the placement rack 31 inside the door panel 3. After collecting the soil in the sampling area with the sampling tube 4, the second motor 83 is activated. The second motor 83 rotates forward and intermittently drives each clamping groove on the driving clamping frame 82 to align with the feeding port 101. Then, the detector inserts the sampling tube 4 filled with a certain amount of soil into the clamping grooves of the clamping frame 82 in sequence through the feeding port 101 on the housing of the soil detector 1. During this process, under the action of the one-way bearing 84, the turntable 85 rotates synchronously with the clamping frame 82, so that the material discharge port 851 of the turntable 85 is always misaligned with the clamping grooves of the clamping frame 82, ensuring that the sample soil inserted into the sampling tube 4 is blocked on the turntable 85. When the clamping frame 82 is filled with sampling tubes 4, the second motor 83 is first turned off and the third motor 97 is activated. The third motor 97 drives the first driving gear 96 to rotate through the second gear 98, so that the first gear 96 synchronously drives the crushing rods 95 in each mounting frame 94 to rotate. Then, the detector holds the first operating rod 92 and pushes and pulls it up and down. The first operating rod 92 drives the sliding plate 91 and the connecting pipe 93 to move up and down. The connecting pipe 93 drives the crushing rods 95 rotating inside the mounting frame 94 to move up and down. At this time, the telescopic cover 12 at the bottom of the mounting frame 94 will be placed on the top pipe orifice of each sampling tube 4 and cover between the mounting frame 94 and the corresponding sampling tube 4. Whenever the crushing claws at the lower end of the crushing rod 95 extend into the corresponding sampling tube 4, the soil sampled in the sampling tube 4 can be crushed. During this crushing process, the hot air blower 10 can also be activated. The hot air blower 10 conducts the generated hot air into the connecting pipe 93 through the telescopic pipe 11. The hot air then flows through the telescopic cover 12 and evenly blows on the sampling tube 4 to dry the crushed soil in the sampling tube 4 and eliminate the interference of excessive humidity on the subsequent soil detection results.

[0036] As Figure 2 , Figure 3 and Figure 9 shown, the loading member 7 includes a first motor 71, a loading cylinder 72 and a vibrator 73. The first motor 71 is slidably installed at the bottom of the housing of the soil detector 1 at the sliding groove 61 of the guide plate 6. The output shaft of the first motor 71 is fixedly connected to the loading cylinder 72. The output shaft of the first motor 71 is located in the sliding groove 61 of the guide plate 6. The inner circumference of the loading cylinder 72 is circumferentially provided with clamping seats having the same number as the material discharge ports 851. The clamping seats of the loading cylinder 72 are used to load the reagent tubes 41 for the reaction of soil and reagents. The vibrator 73 is fixedly installed outside the casing of the first motor 71. The vibrator 73 is used to vibrate the reagent tubes 41 on the loading cylinder 72 to accelerate the subsequent chemical reaction rate between the sample soil and the reagents and ensure the consistency of the mixture of the soil sample and the reagents.

[0037] After the sampled soil in the sampling tube 4 has been pretreated such as being crushed and dried, first turn off the motor three 97 and the hot air blower 10. Then the tester pulls up the operating rod one 92. At this time, the slide plate 91 and the operating rod one 92 stay at the initial position inside the lifting cylinder 81 under the action of sliding damping without external operating force. Subsequently, the tester slides the loading member 7 along the chute 61 of the guide plate 6. When the loading cylinder 72 is pushed to the corner of the "U"-shaped chute 61 of the guide plate 6, the clamping seat inside the loading cylinder 72 will be precisely aligned with the sieve cylinder 87 at the bottom of the lifting cylinder 81. Then the tester presses down the entire lifting cylinder 81 against the resistance of the elastic ball 811. The turntable 85 and the mounting plate 86 at the bottom of the lifting cylinder 81 descend synchronously until the sieve cylinder 87 on the circumference of the mounting plate 86 at the bottom of the lifting cylinder 81 is embedded downward onto the corresponding reagent tube 41. Then turn on the motor two 83. This time, the motor two 83 drives the clamping bracket 82 to rotate in the reverse direction. At this time, due to the existence of the one-way bearing 84, the turntable 85 cannot be driven by the motor two 83 and remains stationary. As the sampling tube 4 in the clamping groove of the rotating clamping bracket 82 is aligned with the blanking port 851 of the turntable 85, the crushed and dried soil in the sampling tube 4 falls into the sieve cylinder 87 through the blanking port 851, and after being filtered by the sieve mesh at the bottom of the sieve cylinder 87, it falls into the reagent tube 41 in the loading cylinder 72, enabling the soil in the pretreatment mechanism 8 to be quickly transferred onto the loading cylinder 72 for subsequent detection operations.

[0038] Embodiment 2: On the basis of Embodiment 1, as Figure 2 , Figure 9 and Figure 10 shown, the reagent mechanism 13 includes a reagent kit 131 fixedly installed on one side of the housing of the soil detector 1. The reagent kit 131 stores reagents that react with the sample soil. A sliding frame 132 is slidably installed inside the housing of the soil detector 1 where the reagent kit 131 is located. The top of the sliding frame 132 is fixedly connected with an operating rod two 133. The operating rod slides through the housing of the soil detector 1. A spring 134 is arranged between the sliding frame 132 and the housing of the soil detector 1. A dropper 135 is assembled inside the sliding frame 132. The dropper 135 branches into multiple groups of liquid outlet pipes that penetrate the bottom of the sliding frame 132. The multiple groups of liquid outlet pipes of the dropper 135 respectively correspond to the reagent tubes 41 loaded on the loading cylinder 72. A liquid pump 136 is installed at the top of the sliding frame 132. The liquid inlet of the liquid pump 136 is connected to the bottom of the reagent kit 131 through a pipeline, and the liquid outlet of the liquid pump 136 is connected to the dropper 135. Press down the operating rod two 133 and the sliding frame 132 against the elastic force of the spring 134, so that the multiple groups of liquid outlet pipes of the dropper 135 at the bottom of the sliding frame 132 can extend into the corresponding reagent tubes 41 loaded on the loading cylinder 72. After turning on the liquid pump 136 to pump the reagent in the reagent kit 131 into the dropper 135, the reagent in the dropper 135 flows through the multiple groups of liquid outlet pipes and is added to the corresponding reagent tubes 41 on the loading cylinder 72, enabling an equal amount of reagent to react with the sample soil in the reagent tubes 41, facilitating subsequent detection of the reacted soil samples.

[0039] As Figure 2 , Figure 11 and Figure 12 shown, the detection mechanism 14 includes a rotating plate 141, a push rod 142, a connecting frame 144, and a detection probe 145. The rotating plate 141 is rotatably installed on the front side of the housing of the soil detector 1. The push rod 142 slidably penetrates through the rotating plate 141. A convex block 143 is fixedly provided on one side of the rod body of the push rod 142. A slotted groove adapted to the convex block 143 is formed at the connection between the rotating plate 141 and the push rod 142. A connecting frame 144 is fixedly installed on the lower end portion of the rod body of the push rod 142. A detection probe 145 is installed on the connecting frame 144. The detection probe 145 is connected to the detection and analysis module of the soil detector 1 through a wire. The detection probe 145 is used to detect the sample liquid that has reacted in the reagent tube 41 loaded on the loading cylinder 72 and transmit the detected data to the soil detector 1 for analysis. A filter cylinder 15 is installed around the probe of the detection probe 145. The surface of the filter cylinder 15 is provided with dense micropores. The filter cylinder 15 is used to prevent the precipitate and impurities in the sample liquid of the reagent tube 41 from directly contacting the detection probe 145, reduce the interference with the detection probe 145, enable the detection probe 145 to directly detect the sample liquid of the soil, and improve the accuracy of the soil detector 1 in detecting soil parameters.

[0040] After the tester transfers the pretreated soil to the loading cylinder 72, the loading member 7 is then slid along the chute 61 of the guide plate 6. When the loading cylinder 72 is pushed to the next corner of the "U"-shaped chute 61 of the guide plate 6, the clamping seat inside the loading cylinder 72 will accurately align with the liquid outlet pipe of the drip tube 135 on the sliding frame 132. Subsequently, the tester presses down the sliding frame 132 through the second operating rod 133, so that the sliding frame 132 drives the drip tube 135 to move downward against the resistance of the spring 134, enabling each bifurcated liquid outlet pipe of the drip tube 135 to be inserted into the top of the corresponding reagent tube 41 inside the loading cylinder 72. Then, the liquid pump 136 is activated. The liquid pump 136 extracts a quantitative reagent from the reagent kit 131 and evenly distributes it to each reagent tube 41 through the drip tube 135 to ensure that the added amount of the reagent added to each sample soil is consistent. After adding the reagent, the second operating rod 133 is released, and under the action of the spring 134, the sliding frame 132 resets upward, causing the drip tube 135 to disengage from the reagent tube 41 inside the loading cylinder 72. Then, the first motor 71 is activated. The first motor 71 drives the loading cylinder 72 to rotate at a constant speed, and at the same time, it cooperates with the vibrator 73 to generate high-frequency vibration, prompting the sample soil in the reagent tube 41 to be quickly mixed with the added reagent. When the sample soil and the added reagent are fully mixed, the loading member 7 is then pushed to the detection area of the detection mechanism 14 on the soil detector 1, and then the detection operation is carried out. First, the rotating plate 141 is rotated above the loading cylinder 72, and the push rod 142 rotates along the slot of the rotating plate 141. When the convex block 143 on the push rod 142 aligns with the slot of the rotating plate 141, the tester operates the push rod 142 and presses it down. The connecting frame 144 is driven to descend vertically through the push rod 142, so that the detection probe 145 on the connecting frame 144 is immersed in the reaction solution of the reagent tube 41. At this time, the filter cartridge 15 on the probe of the detection probe 145 will block the precipitate in the reaction solution of the reagent tube 41, and only allow the clear liquid to contact the probe of the detection probe 145. The detection data is transmitted to the soil detector 1 in real time through the wire for analysis. After the detection is completed, the push rod 142 resets, and then the reagent tube 41 that has completed the detection inside the loading cylinder 72 is taken out, and the next batch of reagent tubes 41 is replaced. Subsequently, the device is flexibly transferred to a new sampling point through the universal wheels 2, realizing the full-process integrated operation from pretreatment, reagent reaction to detection and analysis, and greatly improving the efficiency and timeliness of outdoor soil pollution detection.

[0041] The technical principle of the embodiments of the present invention has been described above in combination with specific embodiments. These descriptions are only for explaining the principle of the embodiments of the present invention and cannot be interpreted in any way as a limitation on the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific embodiments of the embodiments of the present invention without creative labor, and these ways will all fall within the protection scope of the embodiments of the present invention.

Claims

1. A soil detection device for land pollution detection, comprising a soil detector (1) equipped with universal wheels (2); It is characterized in that It further includes a guide plate (6) at the lower part of the housing of the soil detector (1). A chute (61) is provided on the guide plate (6). A loading member (7) is slidably assembled in the chute (61) of the guide plate (6). A pretreatment mechanism (8) is provided at the top of the housing of the soil detector (1); The pretreatment mechanism (8) includes a lifting cylinder (81) slidably installed on the upper part of the housing of the soil detector (1). Elastic clamping balls (811) are provided on the outer wall of the lifting cylinder (81). The housing of the soil detector (1) is provided with a card slot adapted to the clamping balls (811). A clamping frame (82) is rotatably installed at the bottom of the lifting cylinder (81). Clamping grooves are provided circumferentially on the clamping frame (82). A second motor (83) is fixedly installed on the inner wall of the lifting cylinder (81) through a support plate (831). The output shaft of the second motor (83) is connected to the clamping frame (82). The output shaft of the second motor (83) penetrates through the end of the clamping frame (82) and is rotatably connected to a turntable (85) through a one-way bearing (84). The turntable (85) is provided with material discharge ports (851) having the same number as the clamping grooves of the clamping frame (82) circumferentially. The turntable (85) is in sliding contact with the clamping frame (82). A mounting plate (86) is fixedly connected to the bottom surface of the turntable (85). A sieve cylinder (87) is provided circumferentially on the mounting plate (86). A crushing mechanism (9) is provided in the lifting cylinder (81); A reagent mechanism (13) is provided at the top of the housing of the soil detector (1), and a detection mechanism (14) is provided on the front side of the soil detector (1).

2. The soil detection device for land pollution detection according to claim 1, characterized in that, The loading member (7) includes a first motor (71), a loading cylinder (72) and a vibrator (73). The first motor (71) is slidably installed at the bottom of the housing of the soil detector (1) at the position of the chute (61) of the guide plate (6). A loading cylinder (72) is fixedly connected to the output shaft of the first motor (71). The output shaft of the first motor (71) is located in the chute (61) of the guide plate (6). Clamping seats having the same number as the material discharge ports (851) are provided at intervals circumferentially inside the loading cylinder (72). The clamping seats of the loading cylinder (72) are used for loading reagent tubes (41) for the reaction of soil and reagents. A vibrator (73) is fixedly installed outside the housing of the first motor (71).

3. The soil detection device for land pollution detection according to claim 2, characterized in that, The crushing mechanism (9) includes a sliding plate (91) slidably connected to the top inner wall of the lifting cylinder (81). There is a sliding damping between the sliding plate (91) and the lifting cylinder (81), and the sliding resistance between the sliding plate (91) and the lifting cylinder (81) is less than the buckling force between the elastic clamping ball (811) and the housing of the soil detector (1). A first operating rod (92) is fixedly connected to the top of the plate body of the sliding plate (91). The first operating rod (92) slidably penetrates through the top surface of the cylinder body of the lifting cylinder (81). An annular connecting pipe (93) is fixedly installed at the bottom of the sliding plate (91). The bottom of the pipe body of the connecting pipe (93) is communicated with mounting frames (94) having the same number as the clamping grooves of the clamping frame (82) through a bifurcated pipe. The mounting frames (94) respectively correspond to the clamping grooves on the clamping frame (82). The mounting frame (94) is a frame body with an open bottom. A crushing rod (95) is rotatably connected to the mounting frame (94). A crushing claw is provided at the rod end of the crushing rod (95). The height of the crushing claw of the crushing rod (95) is higher than that of the clamping frame (82). A first gear (96) is fixedly connected to the rotating shaft of the crushing rod (95). A third motor (97) is fixedly installed at the center of the bottom surface of the sliding plate (91). A second gear (98) is fixedly installed on the output shaft of the third motor (97). The teeth on the edge of the second gear (98) penetrate through the circumferential mounting frame (94) and mesh with the corresponding first gear (96).

4. The soil detection device for land pollution detection according to claim 3, characterized in that, A hot air blower (10) is fixedly installed at the top of the cylinder body of the lifting cylinder (81). The hot air blower (10) penetrates through the lifting cylinder (81) through a telescopic pipe (11) and is communicated to the connecting pipe (93). A telescopic cover (12) is provided at the bottom of the mounting frame (94). The telescopic cover (12) covers the top of the clamping groove of the clamping frame (82). The telescopic cover (12) is located between the mounting frame (94) and the sampling pipe (4) in the clamping groove of the clamping frame (82).

5. The soil detection device for land pollution detection according to claim 4, characterized in that, A handle (5) is fixedly installed on the rear side wall of the housing of the soil detector (1). Two door panels (3) are symmetrically and hingedly installed on the front side of the housing of the soil detector (1). A placing rack (31) is arranged on the inner side of the door panel (3). Bases for placing the sampling pipe (4) and the reagent pipe (41) are respectively provided on the placing rack (31).

6. The soil detection device for land pollution detection according to claim 5, characterized in that, The reagent mechanism (13) includes a reagent kit (131) fixedly installed on one side of the housing of the soil detector (1). A sliding frame (132) is slidably installed inside the housing of the soil detector (1) where the reagent kit (131) is located. A second operating rod (133) is fixedly connected to the top of the sliding frame (132). The operating rod slides through the housing of the soil detector (1). A spring (134) is arranged between the sliding frame (132) and the housing of the soil detector (1). A dropper tube (135) is assembled inside the sliding frame (132). The dropper tube (135) branches into multiple groups of liquid outlet tubes that penetrate the bottom of the sliding frame (132). The multiple groups of liquid outlet tubes of the dropper tube (135) respectively correspond to the reagent tubes (41) loaded on the loading cylinder (72). A liquid pump (136) is installed on the top of the sliding frame (132). The liquid inlet of the liquid pump (136) is connected to the bottom of the reagent kit (131) through a pipeline. The liquid outlet of the liquid pump (136) is connected to the dropper tube (135).

7. The soil detection device for land pollution detection according to claim 6, characterized in that, The detection mechanism (14) includes a rotating plate (141), a push rod (142), a connecting frame (144), and a detection probe (145). The rotating plate (141) is rotatably installed on the front side of the housing of the soil detector (1). The push rod (142) slides through the rotating plate (141). A convex block (143) is fixedly provided on one side of the rod body of the push rod (142). A slot adapted to the convex block (143) is opened at the connection of the rotating plate (141) and the push rod (142). A connecting frame (144) is fixedly installed on the lower end of the rod body of the push rod (142). A detection probe (145) is installed on the connecting frame (144). The detection probe (145) is connected to the detection and analysis module of the soil detector (1) through a wire.

8. The soil detection device for land pollution detection according to claim 7, characterized in that, A filter cylinder (15) is installed around the probe of the detection probe (145). The surface of the filter cylinder (15) is provided with dense micropores. The filter cylinder (15) is used to prevent the sediment and impurities in the sample liquid of the reagent tube (41) from directly contacting the detection probe (145).

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