Soil heavy metal pollution detection device and method

Abstract

The invention provides a soil heavy metal pollution detection device and method, and relates to the technical field of soil detection.The soil heavy metal pollution detection device comprises a balancing weight main body, three overturning plates are rotationally installed on the outer side of the top of the balancing weight main body, guide sliding grooves are formed in the side faces of the overturning plates, and guide sliding blocks are slidably installed in the guide sliding grooves; the movable plate is further installed on the outer side of the adjusting threaded rod, two supporting plates are rotatably installed at the bottom of the movable plate, an integrated detection rod is rotatably installed at the bottoms of the supporting plates, and a detection probe is installed on the integrated detection rod. The detection probe on the integrated detection rod is located between the lower protection plate and the upper protection plate, soil of different depths cannot be attached to the detection probe, the accuracy of heavy metal pollution detection results of the soil of different depths is guaranteed, and the problem that soil particles of different depths may be attached to the surface of an instrument probe is solved. And the detection data and the actual pollution distribution have large deviation.

Description

Technical Field

[0001] The present invention relates to the technical field of soil detection, and in particular to a device and method for detecting heavy metal pollution in soil. Background Art

[0002] Soil is the foundation of agricultural production, and its safety is directly related to the yield and quality of crops and the sustainability of agricultural ecosystems. Heavy metal pollution is one of the sources of soil pollution. By using detection devices to detect heavy metal pollution in soil, we can assess soil environmental quality and ensure the safety of agricultural products and ecological health.

[0003] In the existing technology, when testing soil for heavy metal pollution, X-ray fluorescence spectrometers are often used at the testing site. However, when the detector is inserted into deep soil for layered testing, soil particles at different depths may adhere to the surface of the instrument probe. When testing at deep sampling points, shallow soil is accidentally brought into the analysis area. The mixing of soil at different depths will interfere with the heavy metal signal at the target depth, resulting in a large deviation between the test data and the actual pollution distribution. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a soil heavy metal pollution detection device and method to solve the problems mentioned in the above background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: The cam is provided with a toothed structure, and the toothed structure is provided with a toothed structure, and the toothed structure is provided with a toothed structure, and the toothed structure is provided with a toothed structure, and the toothed structure is provided with a toothed structure, and the toothed structure is provided with a toothed structure, and the toothed structure is provided with a toothed structure, and the toothed structure is provided with a toothed structure, and the toothed structure is provided with a toothed structure, and the toothed structure is provided with a toothed structure,

[0006] Furthermore, a lower protective plate is installed at the bottom of the positioning side groove and the inside of the insert plate, wherein the lower protective plate is an arc-shaped plate structure, protrusions are provided on both sides of the inside of the insert plate, a spring is installed at the bottom of the protrusion, a sealing plate is installed at the bottom of the protrusion through the spring, an upper protective plate is installed at the bottom of the sealing plate, the outer end of the upper protective plate is slidably installed in the inside of the positioning side groove, and the upper protective plate is installed on the top of the lower protective plate.

[0007] Furthermore, the integrated detection rod is slidably installed between the lower protective plate and the upper protective plate, a rotating tube is rotatably installed at the middle position of the top of the counterweight block body, and two traction slides are slidably installed on the outer side of the rotating tube.

[0008] Furthermore, the traction slide is an annular structure, and springs are installed on the outside of the two traction slides. Cleaning covers are installed on the outside of the two traction slides through springs. Cleaning brushes are provided on the top and bottom of the inside of the cleaning cover, and a collection cover is installed in the middle position of the inside of the cleaning cover.

[0009] Furthermore, a collection pipe is installed at the side end of the collection cover, and a guide pipe is installed on the outside of the cleaning cover through the collection pipe. The guide pipe is made of flexible material, and the guide pipe is located on the inner side of the rotating tube, and a rotating joint is installed at the side end of the guide pipe.

[0010] Furthermore, a delivery pipe is installed inside the counterweight body, the top of the delivery pipe is connected to the rotary joint at the side end of the guide pipe, and the side end of the delivery pipe is connected to the drive pump on the side of the detachable collection box.

[0011] Furthermore, a positioning plate is installed on the top of the rotating tube. The positioning plate is a circular structure, and a guide groove is opened on the side of the positioning plate. The guide groove is an annular structure, and a guide ring is rotatably installed inside the guide groove.

[0012] Furthermore, a connecting rod is installed on the outer side of the guide ring, and a limiting ring is installed on the bottom of the connecting rod. The limiting ring is an arc-shaped structure, and a receiving groove is provided on the side end of the limiting ring.

[0013] Furthermore, a rotating shaft is slidably installed inside the storage groove, a clamping plate is rotatably installed on the outside of the rotating shaft, and a positioning ring is installed on the top side of the flip plate, wherein the positioning ring is an annular structure, and the side end of the limiting ring is slidably installed on the inner side of the positioning ring.

[0014] Furthermore, the soil heavy metal pollution detection device is used, comprising the following steps: First, the rotating limit rings are separated from the positioning rings in turn, and the flip plate loses its fixing force. Second, rotate the flip plate to drive the insert plate into the soil. Third, rotate the top of the adjusting threaded rod to drive the movable plate to move the integrated detection rod outward through the two support plates. Fourth, six integrated detection rods at different heights are inserted into the soil at different depths. The detection probes on the integrated detection rods are exposed to emit X-rays to detect heavy metals in the soil. 5. After the inspection, push the traction slide to drive the cleaning cover to clean the insert plate and the integrated inspection rod through the spring.

[0015] The present invention provides a soil heavy metal pollution detection device and method, which has the following beneficial effects: When the present invention is in use, the detection probe on the integrated detection rod is located between the lower protective plate and the upper protective plate. During the process of inserting the insertion plate into the soil, soil of different depths will not adhere to the detection probe. A total of six integrated detection rods at different heights on both sides of an insertion plate can be inserted into soil of different depths for detection. The detection probes do not interfere with each other during detection, and there is no problem of adhesion to different soils. This ensures the accuracy of the heavy metal pollution detection results of soils at different depths, and can more comprehensively obtain soil heavy metal pollution information.

[0016] In addition, after completing the soil heavy metal pollution test, the traction slide is pushed to drive the cleaning cover to move up and down on the outside of the insertion plate. The brushes on the top and bottom of the inside of the cleaning cover can clean the outside of the insertion plate and the detection probe, effectively removing the soil residue attached to the insertion plate and the detection probe during the detection process. The collection cover attracts the cleaned soil and accurately transports the soil to the detachable collection box for storage through the collection tube, diversion tube and delivery tube, avoiding the interference of soil residue on subsequent detection and providing a strong guarantee for the accuracy of later detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] Figure 1 A schematic diagram showing the overall structure of the present invention.

[0020] Figure 2 A schematic diagram of the folded state of the present invention is shown.

[0021] Figure 3 A schematic diagram of the three-dimensional structure of the bottom of the flip plate of the present invention is shown.

[0022] Figure 4 A schematic cross-sectional structural diagram of the insert plate of the present invention is shown.

[0023] Figure 5 The present invention shows Figure 4 Schematic diagram of the enlarged structure of part A.

[0024] Figure 6 A schematic cross-sectional structural diagram of a rotary tube according to the present invention is shown.

[0025] Figure 7 A schematic cross-sectional structural diagram of the cleaning cover of the present invention is shown.

[0026] Figure 8 A schematic diagram of the three-dimensional structure of the positioning plate of the present invention is shown.

[0027] Figure 9 A schematic diagram of the expanded state of the card board of the present invention is shown.

[0028] Reference numerals: 1. Counterweight body, 101. Counterweight base, 102. Sliding fixed plate, 103. Flip plate, 104. Guide slide, 105. Guide slider, 106. Insert plate, 107. Positioning side groove, 108. Adjustment threaded rod, 109. Lower protective plate, 1010. Sealing plate, 1011. Upper protective plate, 1012. Movable plate, 1013. Support plate, 1014. Integrated detection rod, 2. Rotating tube, 201. Traction slide, 202. Cleaning cover, 203. Collection cover, 204. Collection tube, 205. Diversion tube, 206. Delivery tube, 207. Detachable collection box, 3. Positioning plate, 301. Guide groove, 302. Guide ring, 303. Connecting rod, 304. Limiting ring, 305. Receiving groove, 306. Card plate, 307. Positioning ring. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Please refer to Figures 1 to 9 : Embodiment 1: The present invention proposes a soil heavy metal pollution detection device and method, comprising: a counterweight block body 1, the counterweight block body 1 is a cylindrical structure, and a counterweight base 101 is installed at the bottom of the counterweight block body 1, and a sliding fixed plate 102 is slidably installed on the outside of the counterweight block body 1, and a fixed cone is provided at the bottom of the sliding fixed plate 102, and the fixed cone passes through the bottom of the counterweight base 101, and three flip plates 103 are rotatably installed on the outside of the top of the counterweight block body 1, and a guide groove 104 is provided on the side of the flip plate 103, and a guide slider 105 is slidably installed inside the guide groove 104, and an insert plate 106 is installed inside the guide slider 105, and the bottom of the insert plate 106 is a conical structure, and three positioning side grooves 107 are provided on both sides of the insert plate 106, an adjusting threaded rod 108 is rotatably installed inside the insert plate 106, and a movable plate 1012 is slidably installed inside the insert plate 106. 2 is also installed on the outside of the adjusting threaded rod 108, and two support plates 1013 are rotatably installed at the bottom of the movable plate 1012, and an integrated detection rod 1014 is rotatably installed at the bottom of the support plate 1013. The outer end of the integrated detection rod 1014 is a tapered structure, and a detection probe is installed on the integrated detection rod 1014. The bottom of the positioning side groove 107 and the inside of the insert plate 106 are installed with a lower protective plate 109, wherein the lower protective plate 109 is an arc-shaped plate structure, and protrusions are provided on both sides of the inside of the insert plate 106. A spring is installed at the bottom of the protrusion. A sealing plate 1010 is installed at the bottom of the protrusion through the spring. An upper protective plate 1011 is installed at the bottom of the sealing plate 1010. The outer end of the upper protective plate 1011 is slidably installed in the inside of the positioning side groove 107. The upper protective plate 1011 is installed on the top of the lower protective plate 109. The integrated detection rod 1014 is slidably installed between the lower protective plate 109 and the upper protective plate 1011.

[0031] In the embodiment of the present invention, when detecting heavy metal pollution in soil, the counterweight base 101 at the bottom of the counterweight body 1 is placed in the soil detection area, and the sliding fixing plate 102 is moved downward on the outside of the counterweight body 1 to drive the fixed cone at the bottom to penetrate the counterweight base 101 and insert it into the soil, thereby fixing the position of the counterweight body 1. The flip plate 103 is rotated on the outside of the top of the counterweight body 1, and the flip plate 103 drives the insertion plate 106 to move. The insertion plate 106 is inserted into the soil by means of a pressure device or manual pressure. In the soil, when the insert plate 106 moves downward in the soil, both sides of the insert plate 106 drive the guide slider 105 to move along the guide slot 104, so that the insert plate 106 is vertically inserted into the soil and moves downward. The bottom of the insert plate 106 opens the soil into a suitable moving channel, and the detection probe on the integrated detection rod 1014 is between the lower protective plate 109 and the upper protective plate 1011. During the movement, the soil of different depths will not adhere to the detection probe. The three insert plates 106 are in a suitable position. The top of the threaded rod 108 is rotated in the middle position of the top of the insert plate 106 to drive the movable plate 1012 to move inside the insert plate 106. The bottom of the movable plate 1012 drives the integrated detection rod 1014 to move outward through two support plates 1013. When the integrated detection rod 1014 moves outward between the lower protective plate 109 and the upper protective plate 1011, the side of the support plate 1013 pushes the upper protective plate 1011 to move upward, and the upper protective plate 1011 drives the sealing plate 1010 to locate the side groove 107. The interior moves upward, causing the integrated detection rod 1014 to move horizontally and be inserted into the soil. A total of six integrated detection rods 1014 at different heights on both sides of an insertion plate 106 are inserted into the soil at different depths. The detection probes on the integrated detection rods 1014 are exposed to emit X-rays to detect heavy metals in the soil. The detection probes on the six integrated detection rods 1014 do not have the problem of adhering to different soils when the insertion plate 106 is inserted into the soil at different depths, thereby ensuring the accuracy of the heavy metal pollution detection results in the soil at different depths.

[0032] Embodiment 2, on the basis of embodiment 1, a rotating tube 2 is rotatably installed at the middle position of the top of the counterweight body 1, and two traction slides 201 are slidably installed on the outside of the rotating tube 2. The traction slide 201 is a ring structure, and springs are installed on the outsides of the two traction slides 201. A cleaning cover 202 is installed on the outside of the two traction slides 201 through the springs. Cleaning brushes are provided on the top and bottom of the inside of the cleaning cover 202, and a collecting cover 203 is installed at the middle position of the inside of the cleaning cover 202. A collecting pipe 204 is installed on the side end of the collecting cover 203. The collecting pipe 204 passes through the outer side of the cleaning cover 202. A guide tube 205 is installed on the side, and the guide tube 205 is made of flexible material. The guide tube 205 is located on the inner side of the rotating tube 2, and a rotating joint is installed on the side end of the guide tube 205. A delivery tube 206 is installed inside the counterweight body 1. The top of the delivery tube 206 is connected to the rotating joint at the side end of the guide tube 205, and the side end of the delivery tube 206 is connected to the driving pump on the side of the detachable collection box 207. After the heavy metal pollution detection of the soil, each time the insertion plate 106 is used, the rotating tube 2 is rotated on the top of the counterweight body 1 to drive the side end of the internal guide tube 205 to rotate on the delivery tube 206. The tube 2 drives the traction slide 201 and the cleaning cover 202 to move to the insertion plate 106 through the spring. The flip plate 103 rotates to a vertical state at the top of the outer side of the counterweight body 1. Under the action of the weight, the insertion plate 106 drives the guide slider 105 to move along the guide slot 104, so that the insertion plate 106 is in a vertical state. The bottom of the insertion plate 106 is at the top of the cleaning cover 202, pushing the traction slide 201 to move upward on the outer side of the insertion plate 106 through the spring. At the same time, the driving pump on the side of the detachable collection box 207 works, and the top and inner sides of the cleaning cover 202 are driven. The brush at the bottom cleans the outside of the insertion plate 106, and after rotating the adjusting threaded rod 108, the detection probe on the integrated detection rod 1014 leaks out, so that the brush cleans the detection probe, and the collection cover 203 collects the cleaned soil. The soil flows into the inside of the guide tube 205 through the collection cover 203 and the collection tube 204 with the air flow. When the cleaning cover 202 moves up and down, it drives the guide tube 205 to move inside the rotating tube 2, so that the residual soil enters the detachable collection box 207 through the conveying pipe 206 for storage, reducing soil residue and ensuring the accuracy of subsequent detection.

[0033] The third embodiment, on the basis of the first embodiment, a positioning plate 3 is installed on the top of the rotating tube 2, the positioning plate 3 is a circular structure, and a guide groove 301 is provided on the side of the positioning plate 3, the guide groove 301 is an annular structure, and a guide ring 302 is rotatably installed inside the guide groove 301, a connecting rod 303 is installed on the outside of the guide ring 302, and a limiting ring 304 is installed on the bottom of the connecting rod 303, the limiting ring 304 is an arc structure, and a receiving groove 305 is provided on the side end of the limiting ring 304, a rotating shaft is slidably installed inside the receiving groove 305, and a clamping plate 306 is rotatably installed on the outside of the rotating shaft, and a positioning ring 307 is installed on one side of the top of the flip plate 103, wherein the positioning ring 307 is an annular structure, and the side end of the limiting ring 304 is slidably installed on the inner side of the positioning ring 307. When detecting heavy metal pollution in soil, the positioning ring 307 is installed on the top of the flip plate 103. The guide ring 302 is rotated in the outer guide groove 301 to drive the connecting rod 303 to move, and the bottom of the connecting rod 303 drives the limit ring 304 to be inserted into multiple positioning rings 307. The card plate 306 is rotated inside the storage groove 305 to be in a vertical state, and the card plate 306 slides to one end of the storage groove 305 to position the positioning ring 307 to prevent the positioning ring 307 from falling off on the limit ring 304, thereby ensuring the stability of multiple flip plates 103. When the three flip plates 103 are unfolded, the card plate 306 slides to the middle position inside the storage groove 305, and the card plate 306 is rotated and stored inside the storage groove 305. The guide ring 302 is rotated inside the guide groove 301 to drive the limit ring 304 to rotate through the connecting rod 303 and disengage from the positioning ring 307 in sequence, thereby facilitating the unfolding of the three flip plates 103 to detect heavy metal pollution in the soil.

[0034] The detection method uses a soil heavy metal pollution detection device, including the following steps: First, the rotation limit ring 304 is separated from the positioning ring 307 in sequence, and the flip plate 103 loses its fixing force. Second, rotate the flip plate 103 to drive the inserting plate 106 into the soil. Third, the top of the adjusting threaded rod 108 is rotated to drive the movable plate 1012 to move outward through the two support plates 1013, respectively, driving the integrated detection rod 1014. Fourth, six integrated detection rods 1014 at different heights are inserted into the soil at different depths. The detection probes on the integrated detection rods 1014 are exposed to emit X-rays to detect heavy metals in the soil. Fifth, after the detection, the traction slide plate 201 is pushed to drive the cleaning cover 202 to clean the insertion plate 106 and the integrated detection rod 1014 through the spring.

[0035] The working principle of this embodiment is as follows: the card plate 306 slides to the middle position inside the receiving groove 305, and the card plate 306 is stored in the receiving groove 305 after rotation. The guide ring 302 is rotated in the guide groove 301, thereby driving the limit ring 304 to rotate and disengage from the positioning ring 307 in sequence. The flip plate 103 is rotated on the outside of the top of the counterweight body 1 to drive the insertion plate 106 to move. With the help of pressure equipment or manual pressure, the insertion plate 106 is inserted into the soil. The two sides of the insertion plate 106 drive the guide slider 105 to move along the guide groove 104, and the insertion plate 106 is vertically inserted into the soil to stretch out. Suitable moving channel, the detection probe on the integrated detection rod 1014 is between the lower protective plate 109 and the upper protective plate 1011 and will not be attached to the soil, the top of the rotating adjustment threaded rod 108 drives the movable plate 1012 to move in the insertion plate 106, and the bottom of the movable plate 1012 drives the integrated detection rod 1014 to move outward through two support plates 1013. The integrated detection rod 1014 moves outward between the lower protective plate 109 and the upper protective plate 1011, and the side of the support plate 1013 pushes the upper protective plate 1011 to move upward. There are a total of six integrated detection rods 1014 at different heights. 14 is inserted into the soil at different depths, and the detection probe on the integrated detection rod 1014 is exposed to emit X-rays to detect heavy metals in the soil. After each insertion plate 106 is used, the rotating tube 2 drives the traction slide 201 and the cleaning cover 202 to move to the insertion plate 106 through the spring, and the flip plate 103 rotates to a vertical state at the top of the outer side of the counterweight body 1. Under the action of weight, the insertion plate 106 drives the guide slider 105 to move along the guide slot 104 in a vertical state. The insertion plate 106 is above the cleaning cover 202, pushing the traction slide 201 to drive the cleaning cover 202 through the spring. The cover 202 moves upward on the outside of the insertion plate 106, and at the same time, the driving pump on the side of the detachable collection box 207 works. The brushes on the top and bottom of the inner side of the cleaning cover 202 clean the outside of the insertion plate 106, and after rotating the adjusting threaded rod 108, the detection probe on the integrated detection rod 1014 leaks out, the brush cleans the detection probe, and the collection cover 203 collects the cleaned soil. The soil flows with the air flow through the collection cover 203 and the collection pipe 204 to the guide pipe 205 and then enters the detachable collection box 207 through the delivery pipe 206 for storage, thereby improving the accuracy of subsequent soil detection.

[0036] In this article, there are several points to note: 1. The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0037] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0038] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A soil heavy metal pollution detection device, comprising: The counterweight block body (1) is provided with a counterweight base (101) at the bottom of the counterweight block body (1), and a sliding fixed plate (102) is slidably installed on the outer side of the counterweight block body (1), characterized in that a fixed cone is provided at the bottom of the sliding fixed plate (102), and the fixed cone passes through the bottom of the counterweight base (101), and three flip plates (103) are rotatably installed on the outer side of the top of the counterweight block body (1), and a guide groove (104) is provided on the side of the flip plate (103), and a guide slider (105) is slidably installed inside the guide groove (104), and the guide slider (105) is installed inside. An insert plate (106) is provided, and three positioning side grooves (107) are provided on both sides of the insert plate (106). An adjusting threaded rod (108) is rotatably installed inside the insert plate (106), and a movable plate (1012) is slidably installed inside the insert plate (106). The movable plate (1012) is also installed on the outside of the adjusting threaded rod (108), and two supporting plates (1013) are rotatably installed at the bottom of the movable plate (1012). An integrated detection rod (1014) is rotatably installed at the bottom of the support plate (1013), and a detection probe is installed on the integrated detection rod (1014).

2. A soil heavy metal pollution detection device according to claim 1, characterized in that: A lower protective plate (109) is installed at the bottom of the positioning side groove (107) and inside the insert plate (106), and protrusions are provided on both sides of the inside of the insert plate (106). A spring is installed at the bottom of the protrusion, and a sealing plate (1010) is installed at the bottom of the protrusion through the spring. An upper protective plate (1011) is installed at the bottom of the sealing plate (1010), and the outer end of the upper protective plate (1011) is slidably installed inside the positioning side groove (107), and the upper protective plate (1011) is installed on the top of the lower protective plate (109).

3. A soil heavy metal pollution detection device according to claim 2, characterized in that: The integrated detection rod (1014) is slidably mounted between the lower protective plate (109) and the upper protective plate (1011); a rotating tube (2) is rotatably mounted at the middle position of the top of the counterweight body (1); and two traction slide plates (201) are slidably mounted on the outer side of the rotating tube (2).

4. The soil heavy metal pollution detection device according to claim 3, characterized in that: Springs are installed on the outer sides of the two traction slides (201), and cleaning covers (202) are installed on the outer sides of the two traction slides (201) through the springs. Cleaning brushes are provided on the top and bottom of the inner sides of the cleaning covers (202), and a collecting cover (203) is installed in the middle of the inner side of the cleaning covers (202).

5. The soil heavy metal pollution detection device according to claim 4, characterized in that: A collecting pipe (204) is installed at the side end of the collecting cover (203); the collecting pipe (204) passes through the cleaning cover (202); a guide pipe (205) is installed on the outside; the guide pipe (205) is located on the inside of the rotating tube (2); and a rotating joint is installed at the side end of the guide pipe (205).

6. The soil heavy metal pollution detection device according to claim 5, characterized in that: A delivery pipe (206) is installed inside the counterweight body (1), the top of the delivery pipe (206) is connected to the rotary joint at the side end of the guide pipe (205), and the side end of the delivery pipe (206) is connected to the drive pump at the side of the detachable collection box (207).

7. The soil heavy metal pollution detection device according to claim 6, characterized in that: A positioning plate (3) is installed on the top of the rotating tube (2), a guide groove (301) is provided on the side of the positioning plate (3), and a guide ring (302) is rotatably installed inside the guide groove (301).

8. The soil heavy metal pollution detection device according to claim 7, characterized in that: A connecting rod (303) is installed on the outside of the guide ring (302), a limiting ring (304) is installed on the bottom of the connecting rod (303), and a receiving groove (305) is provided on the side end of the limiting ring (304).

9. The soil heavy metal pollution detection device according to claim 8, characterized in that: A rotating shaft is slidably mounted inside the receiving groove (305), a clamping plate (306) is rotatably mounted on the outside of the rotating shaft, a positioning ring (307) is mounted on one side of the top of the flip plate (103), and a side end of the limiting ring (304) is slidably mounted on the inner side of the positioning ring (307).

10. A method for detecting heavy metal pollution in soil, characterized in that: Using a soil heavy metal pollution detection device as claimed in claim 9, The following steps are involved: First, the rotation limit ring (304) is separated from the positioning ring (307) in sequence, and the flip plate (103) loses its fixing force. Second, the turning plate (103) is rotated to drive the inserting plate (106) to be inserted into the soil. Third, the top of the adjusting threaded rod (108) is rotated to drive the movable plate (1012) to move the integrated detection rod (1014) outward through the two support plates (1013). Fourth, a total of six integrated detection rods (1014) at different heights are inserted into the soil at different depths, and the detection probes on the integrated detection rods (1014) are exposed to emit X-rays to detect heavy metals in the soil. Fifth, after the detection, the traction slide plate (201) is pushed to drive the cleaning cover (202) through the spring to clean the insertion plate (106) and the integrated detection rod (1014).

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