A soil pollutant collection and detection device

Abstract

The present invention discloses a soil pollutant collection and detection device, which relates to the field of soil detection technology, including a mobile frame, a lifting plate equipped with a grabbing assembly temporarily connected to a docking seat, a servo motor drivingly connected with a lifting assembly, a sampling insert tube vertically slidingly installed with a pusher tube, and a scraping assembly for scraping the inner wall of the sampling insert tube installed on the pusher tube. The present invention can drive the lifting plate to drive the lifting plate through the servo motor, so that the lifting plate can drive the sampling insert tube to vertically lift through the grabbing assembly, and can unlock the grabbing assembly through the unlocking assembly, so that the sampling insert tube is released and falls after lifting, and the sampling insert tube impacts into the soil to obtain soil samples, and the soil taking process of the sampling insert tube is guided and limited by the guide assembly, which greatly improves the sampling stability and sampling operation efficiency of the sampling insert tube.

Description

Technical Field

[0001] The present invention relates to the technical field of soil detection, in particular to a soil pollutant collection and detection device. Background Art

[0002] Soil pollution refers to the phenomenon that due to human activities or natural processes, the content of harmful substances in the soil exceeds the self-purification capacity of the soil, thus causing the decline of soil quality and the deterioration of the ecological environment. Soil pollutants can be roughly divided into two categories: inorganic pollutants and organic pollutants. Inorganic pollutants mainly include acids, alkalis, heavy metals, salts, compounds of radioactive elements cesium and strontium, compounds containing arsenic, selenium, and fluorine, etc. Organic pollutants mainly include organic pesticides, phenols, cyanide, petroleum, and synthetic detergents.

[0003] When detecting soil pollutants, it is necessary to use a sampling device to collect samples from the contaminated soil area, and analyze the soil pollution situation through the detection of the samples. However, when the existing sampling device is in the soil sampling operation, the sampling insert cannot be automatically raised and lowered and stably inserted into the soil for sampling. At the same time, the soil sample obtained inside the sampling insert cannot be automatically and smoothly discharged in the next sampling, resulting in residual soil samples in the sampling insert and affecting the accuracy of the next sampling detection. Therefore, a soil pollutant collection and detection device is provided to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a soil pollutant collection and detection device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A soil pollutant collection and detection device comprises a mobile frame, a support frame is fixed on the mobile frame, a servo motor is fixed on the top of the support frame, a vertically arranged guide sleeve is embedded and fixed on the mobile frame, a sampling insert is vertically corresponding to the top of the guide sleeve, a guide assembly for limiting the sampling insert is installed in the guide sleeve, a docking seat is fixedly sleeved on the upper end of the sampling insert, a lifting sleeve is vertically slidably installed on the support frame, a lifting plate is fixed on the lower end of the lifting sleeve, a grabbing assembly temporarily connected to the docking seat is installed on the lifting plate, a lifting assembly is drivingly connected to the servo motor, and the lifting assembly is used to drive the lifting The lowering sleeve is lifted vertically, and an unlocking assembly is installed on the top of the support frame. The unlocking assembly is used to drive the grabbing assembly to separate from the docking seat. A pushing cylinder is vertically slidably installed in the sampling insert cylinder, and a scraping assembly for scraping the inner wall of the sampling insert cylinder is installed on the pushing cylinder. A push rod that slides through the top of the sampling insert cylinder is coaxially fixed on the pushing cylinder, and the push rod slides and extends into the lifting sleeve. A U-shaped baffle frame arranged opposite to the top of the push rod is fixed on the support frame, and a vertical bar hole for the U-shaped baffle frame to slide through is opened in the lifting sleeve, and a threaded sleeve is threadedly sleeved on the sampling insert, and a counterweight block is fixedly sleeved on the threaded sleeve.

[0007] As an improved solution of the present invention: the lifting assembly includes a vertical screw rod rotatably mounted on the support frame, the vertical screw rod is coaxially fixed with the output shaft of the servo motor, and a lifting frame is threadedly sleeved on the vertical screw rod and vertically slidably embedded in the support frame.

[0008] As an improved solution of the present invention: the lifting assembly also includes a lifting frame rotatably mounted on the support frame, an extension column is fixed on the lifting frame, a traction rod is hinged between the extension column and the lifting frame, a guide bar hole is opened on the lifting frame, and an extension sliding column fixed to the side wall of the lifting sleeve is slidably installed in the guide bar hole.

[0009] As an improved solution of the present invention: the grabbing assembly includes a plurality of circumferentially evenly distributed extension blocks fixed to the bottom of the lifting plate, radial rods that slide radially along the lifting plate are horizontally installed on the extension blocks, and L-shaped hook plates connected to the docking seat are fixed at the ends of the radial rods.

[0010] As an improved solution of the present invention: the grabbing assembly further comprises an annular groove circumferentially arranged on the side wall of the docking seat, the L-shaped hook plate is clamped in the annular groove, and the upper side wall of the docking seat is provided with a conical surface.

[0011] As an improved solution of the present invention: the unlocking assembly includes a plurality of unlocking vertical plates vertically slidably installed on the top of the support frame, and an upper wedge block is fixed to one end of each radial rod away from the L-shaped hook plate, and the unlocking vertical plates correspond vertically one to one with the upper wedge blocks.

[0012] As an improved solution of the present invention: the unlocking assembly also includes a threaded sleeve rotatably installed on the top of the support frame, the threaded sleeve is threadedly sleeved with an adjustment frame, the unlocking vertical plate is fixed to the bottom of the adjustment frame, the threaded sleeve is fixedly sleeved with an adjustment wheel, and the lifting sleeve vertically slides through the threaded sleeve.

[0013] As an improved solution of the present invention: the scraper assembly includes a rotating sleeve rotatably installed in the pushing barrel, the rotating sleeve rotatably sleeved on the push rod, and a vertical spring sleeved on the push rod is fixed between the rotating sleeve and the top of the sampling insert.

[0014] As an improved solution of the present invention: the scraper assembly also includes a plurality of guide blocks radially slidably installed on the push barrel, one end of each of the guide blocks is fixed with a scraper that abuts against the inner wall of the sampling insert, the other end of each of the guide blocks is fixedly connected to the push barrel with a push spring, the side wall of the sampling insert is provided with two arc grooves that are symmetrical about the axis center thereof, a sliding pin fixed to the push barrel is slidably installed in each of the arc grooves, and the two sliding pins are symmetrical about the axis center of the push barrel.

[0015] As an improved solution of the present invention: the guide assembly includes a plurality of correction blocks that radially slide through the side wall of the guide sleeve, the correction block is sleeved with a sleeve block fixed on the outer wall of the guide sleeve, a connecting spring is fixed between the sleeve block and the correction block, and the upper side wall of the correction block is provided with a slope located inside the guide sleeve.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention drives the lifting plate by driving the lifting assembly through the servo motor, so that the lifting plate can drive the sampling insert to be vertically lifted through the grabbing assembly, and the grabbing assembly can be unlocked by the unlocking assembly, so that the sampling insert is released and falls after being lifted, and the sampling insert impacts into the soil to obtain soil samples, and the soil taking process of the sampling insert is guided and limited by the guide assembly, which greatly improves the sampling stability and sampling operation efficiency of the sampling insert.

[0018] The U-shaped retaining frame abuts against the top of the push rod and keeps it stationary, so that the sampling insert can move vertically upward relative to the pushing barrel, so that the pushing barrel can push out the acquired soil sample, and the sliding pin slides along the arc groove, so that the pushing barrel drives the scraper to rotate and scrape the inner wall of the sampling insert, thereby ensuring sufficient discharge of the soil sample, avoiding the influence of soil residue on the next sampling, and greatly improving the accuracy of sample detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 For the present invention Figure 1 Schematic diagram from a certain perspective;

[0021] Figure 3 It is a schematic diagram of the structure of the lifting sleeve, the lifting plate and the grabbing assembly in the present invention;

[0022] Figure 4 For the present invention Figure 3 The enlarged schematic diagram of the middle A part;

[0023] Figure 5 It is a schematic diagram of the connection of the push rod, docking seat and sampling insert and other components in the present invention;

[0024] Figure 6 It is a connection diagram of the push rod, the push barrel, the vertical spring and the sliding pin in the present invention;

[0025] Figure 7 It is a schematic diagram of the connection between the scraper, the guide block and the push spring in the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the lifting assembly in the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the guide sleeve and the guide assembly in the present invention;

[0028] Fig.10 It is a connection diagram of the correction block and the connection spring in the present invention.

[0029] In the figure: 1-mobile frame, 2-support frame, 3-servo motor, 4-sampling insert, 5-guide sleeve, 6-unlocking vertical plate, 7-adjusting frame, 8-lifting sleeve, 9-threaded sleeve, 10-adjusting wheel, 11-U-shaped stop frame, 12-lifting frame, 13-vertical bar hole, 14-extended sliding column, 15-upper wedge, 16-arc groove, 17-sliding pin, 18-guide bar hole, 19-docking seat, 20-lifting plate, 21-L-shaped hook plate, 2 2- radial rod, 23- extension sleeve block, 24- spring ring, 25- push rod, 26- connecting spring, 27- cone, 28- annular groove, 29- counterweight, 30- vertical spring, 31- rotating sleeve disc, 32- scraper, 33- guide block, 34- push spring, 35- vertical screw, 36- lifting frame, 37- slope, 38- traction rod, 39- extension column, 40- sleeve block, 41- correction block, 42- push barrel, 43- threaded sleeve disc. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments: Example

[0031] Please see attached Figure 1 -Attached Fig.10 A soil pollutant collection and detection device comprises a mobile frame 1, a support frame 2 is fixed on the mobile frame 1, a servo motor 3 is fixed on the top of the support frame 2, a vertically arranged guide sleeve 5 is embedded and fixed on the mobile frame 1, a sampling insert 4 is vertically corresponding to the upper side of the guide sleeve 5, a guide assembly for limiting the sampling insert 4 is installed in the guide sleeve 5, a docking seat 19 is fixedly sleeved on the upper end of the sampling insert 4, a lifting sleeve 8 is vertically slidably installed on the support frame 2, a lifting plate 20 is fixed on the lower end of the lifting sleeve 8, a grabbing assembly temporarily connected to the docking seat 19 is installed on the lifting plate 20, and a lifting assembly is driven and connected to the servo motor 3, and the lifting assembly is used to drive the lifting sleeve 8 is lifted vertically, an unlocking assembly is installed on the top of the support frame 2, and the unlocking assembly is used to drive the grabbing assembly to separate from the docking seat 19. A pushing cylinder 42 is vertically slidably installed in the sampling insert 4, and a scraping assembly for scraping the inner wall of the sampling insert 4 is installed on the pushing cylinder 42. A push rod 25 that slides through the top of the sampling insert 4 is coaxially fixed on the pushing cylinder 42, and the push rod 25 slides and extends into the lifting sleeve 8. A U-shaped retaining frame 11 that is arranged opposite to the top of the push rod 25 is fixed on the support frame 2, and a vertical bar hole 13 for the U-shaped retaining frame 11 to slide through is opened in the lifting sleeve 8. A threaded sleeve 43 is threadedly sleeved on the sampling insert 4, and a counterweight block 29 is fixedly sleeved on the threaded sleeve 43.

[0032] Specifically, the lifting assembly includes a vertical screw rod 35 rotatably mounted on the support frame 2, the vertical screw rod 35 is coaxially fixed with the output shaft of the servo motor 3, and a lifting frame 36 vertically slidably embedded on the support frame 2 is threadedly sleeved on the vertical screw rod 35. The lifting assembly also includes a lifting frame 12 rotatably mounted on the support frame 2, an extension column 39 is fixed on the lifting frame 36, a traction rod 38 is hinged between the extension column 39 and the lifting frame 12, and a guide bar hole 18 is opened on the lifting frame 12, and an extension sliding column 14 fixed to the side wall of the lifting sleeve 8 is slidably installed in the guide bar hole 18.

[0033] The servo motor 3 is arranged to drive the vertical screw 35 to rotate, so that the vertical screw 35 drives the lifting frame 36 to move vertically. The lifting frame 36 transmits the traction rod 38 through the extension column 39. The traction rod 38 drives the lifting frame 12 to rotate. The lifting frame 12 drives the extension slide column 14 to move vertically upward, so that the lifting sleeve 8 and the lifting plate 20 move vertically upward. At this time, the lifting plate 20 drives the docking seat 19 and the sampling insert 4 to move vertically upward to a certain height through the grabbing assembly. Under the action of the unlocking assembly, the grabbing assembly releases the docking seat 19, so that the sampling insert 4 moves vertically downward and impacts into the soil to perform soil sampling operations.

[0034] The grab assembly includes a plurality of circumferentially evenly distributed extension blocks 23 fixed to the bottom of the lifting plate 20, a radial rod 22 is horizontally mounted on the extension block 23 and slides radially along the lifting plate 20, and an L-shaped hook plate 21 connected to the docking seat 19 is fixed to the end of the radial rod 22. The grab assembly also includes an annular groove 28 circumferentially opened on the side wall of the docking seat 19, the L-shaped hook plate 21 is clamped in the annular groove 28, and a conical surface 27 is opened on the upper side wall of the docking seat 19.

[0035] Among them, the unlocking component of the device includes a plurality of unlocking vertical plates 6 vertically slidably installed on the top of the support frame 2, and an upper wedge block 15 is fixed on the end of each radial rod 22 away from the L-shaped hook plate 21, and the unlocking vertical plates 6 correspond vertically to the upper wedge blocks 15 one by one. The unlocking component also includes a threaded sleeve 9 rotatably installed on the top of the support frame 2, and an adjusting frame 7 is threadedly sleeved on the threaded sleeve 9. The unlocking vertical plate 6 is fixed to the bottom of the adjusting frame 7, and an adjusting wheel 10 is fixedly sleeved on the threaded sleeve 9. The lifting sleeve 8 vertically slides through the threaded sleeve 9.

[0036] During the upward movement of the sampling insert 4, when the wedge surface of the upper wedge block 15 is pushed by the unlocking vertical plate 6, the upper wedge block 15 drives the L-shaped hook plate 21 to move away from the center of the lifting plate 20 through the radial rod 22. At this time, the L-shaped hook plate 21 moves out of the annular groove 28 to separate from the docking seat 19. At this time, the docking seat 19 falls together with the sampling insert 4 and impacts into the soil for sampling.

[0037] By screwing the adjusting wheel 10, the threaded sleeve 9 can be driven to rotate, and the threaded sleeve 9 drives the adjusting frame 7 to move vertically, and the unlocking vertical plate 6 on the adjusting frame 7 can realize vertical movement, that is, when the upper wedge block 15 abuts against the unlocking vertical plate 6, the initial falling height position of the sampling insert 4 is adjusted, so that the device can be adaptively adjusted according to the amount of soil sample obtained, which greatly improves the sampling effect and operation convenience of soil detection.

[0038] After the sampling insert 4 is partially inserted into the soil, the lifting frame 12 is adjusted to rotate clockwise, that is, the lifting sleeve 8 drives the lifting disk 20 to move vertically downward. At this time, the L-shaped hook plate 21 moves downward and abuts against the conical surface 27, so that the L-shaped hook plate 21 slides away from the center of the lifting disk 20. Finally, the L-shaped hook plate 21 moves downward to correspond to the annular groove 28 and is engaged. At this time, the L-shaped hook plate 21 is connected to the docking seat 19. By adjusting the lifting frame 12 to rotate counterclockwise, the sampling insert 4 is lifted and pulled out of the soil. Example

[0039] Please see attached Figure 1 -Attached Fig.10 On the basis of Example 1, in addition, the scraper assembly of the device includes a rotating sleeve 31 rotatably installed in the push tube 42, the rotating sleeve 31 is rotatably sleeved on the push rod 25, and a vertical spring 30 sleeved on the push rod 25 is fixed between the rotating sleeve 31 and the top of the sampling insert 4.

[0040] In addition, the scraper assembly also includes a plurality of guide blocks 33 radially slidably mounted on the push barrel 42, one end of each guide block 33 is fixed with a scraper 32 abutting against the inner wall of the sampling insert 4, and the other end of each guide block 33 is fixedly connected to the push barrel 42 with a push spring 34, and the side wall of the sampling insert 4 is provided with two arc grooves 16 symmetrical about the axis center thereof, and the arc grooves 16 are inclinedly arranged, and a sliding pin 17 fixed to the push barrel 42 is slidably mounted in each arc groove 16, and the two sliding pins 17 are symmetrical about the axis center of the push barrel 42.

[0041] Through the above arrangement, when the sampling insert 4 is lifted up after acquiring the soil sample, the push rod 25 moves vertically upward. When it is blocked by the U-shaped retaining frame 11, the push rod 25 remains stationary. At this time, the sampling insert 4 moves vertically upward relative to the pushing cylinder 42, that is, the pushing cylinder 42 has a vertical downward displacement relative to the sampling insert 4. At this time, the soil sample inside the sampling insert 4 can be discharged from the sampling insert 4, and the soil sample can be obtained through the external material receiving device.

[0042] In the above process, when the sampling insert 4 moves relative to the pushing cylinder 42, the sliding pin 17 slides relative to the arc groove 16, and the pushing cylinder 42 rotates while sliding relative to the sampling insert 4, that is, the scraper 32 can rotate and scrape the inner wall of the sampling insert 4, so as to fully scrape off the soil adhered to the inner wall of the sampling insert 4, ensure the cleanliness of the inner wall of the sampling insert 4, avoid the soil residue of the sampling insert 4 from mixing into the next soil sample, and ensure the accuracy of sample sampling and detection.

[0043] In addition, the guide assembly of the device includes a plurality of correction blocks 41 that radially slide through the side wall of the guide sleeve 5, and a sleeve block 40 fixed to the outer wall of the guide sleeve 5 is sleeved on the correction block 41. A connecting spring 26 is fixed between the sleeve block 40 and the correction block 41, and a slope 37 located inside the guide sleeve 5 is provided on the upper side wall of the correction block 41.

[0044] Through the above arrangement, when the sampling insert 4 moves vertically downward and is inserted into the soil, the sampling insert 4 will first abut the slope 37, so that the correction block 41 slides away from the center of the guide sleeve 5. With the help of multiple correction blocks 41, the side wall of the sampling insert 4 is elastically clamped, so that the sampling insert 4 can impact into the soil along the vertical direction, which greatly improves the stability of the soil sample acquisition process and significantly improves the soil detection sampling effect.

[0045] To sum up, the present invention can drive the lifting assembly to drive the lifting plate 20 through the servo motor 3, so that the lifting plate 20 can drive the sampling tube 4 to be vertically lifted through the grabbing assembly, and the grabbing assembly can be unlocked by the unlocking assembly, so that the sampling tube 4 is released and falls after being lifted, and the sampling tube 4 impacts into the soil to obtain soil samples, and the soil taking process of the sampling tube 4 is guided and limited by the guide assembly, which greatly improves the sampling stability and sampling operation efficiency of the sampling tube 4. During the process of lifting the sampling insert 4 provided in the present invention after obtaining the soil test sample inside the sampling insert 4, the top of the push rod 25 is abutted by the U-shaped retaining frame 11 and remains stationary, so that the set sampling insert 4 can move vertically upward relative to the pushing cylinder 42, so that the pushing cylinder 42 can push out the acquired soil sample, and the sliding pin 17 slides along the arc groove 16, so that the pushing cylinder 42 drives the scraper 32 to rotate and scrape the inner wall of the sampling insert 4, thereby ensuring sufficient discharge of the soil sample, avoiding the influence of soil residue on the next sampling, and greatly improving the accuracy of sample detection.

[0046] It should be noted that although this specification is described according to the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. The above embodiments only express the preferred implementation methods of the technical solution, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention of the technical solution. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations, improvements and substitutions can be made, which all belong to the protection scope of the present technical solution. The protection scope of the invention of the present technical solution shall be based on the attached claims.

Claims

1. A soil pollutant collection and detection device, comprising a mobile frame (1), a support frame (2) being fixed on the mobile frame (1), a servo motor (3) being fixed on the top of the support frame (2), characterized in that: A vertically arranged guide sleeve (5) is embedded and fixed on the movable frame (1), and a sampling insert (4) is vertically corresponding to the upper side of the guide sleeve (5). A guide component for limiting the position of the sampling insert (4) is installed in the guide sleeve (5), and a docking seat (19) is fixedly sleeved on the upper end of the sampling insert (4). A lifting sleeve (8) is vertically slidably installed on the support frame (2), and a lifting plate (20) is fixed on the lower end of the lifting sleeve (8). A grabbing component temporarily connected to the docking seat (19) is installed on the lifting plate (20), and a lifting component is drivingly connected to the servo motor (3), and the lifting component is used to drive the lifting sleeve (8) to vertically lift and lower. The support frame (2) The top of the sampling insert (4) is provided with an unlocking assembly, the unlocking assembly is used to drive the grabbing assembly to separate from the docking seat (19), a pushing cylinder (42) is vertically slidably installed in the sampling insert (4), a scraping assembly for scraping the inner wall of the sampling insert (4) is installed on the pushing cylinder (42), a push rod (25) is coaxially fixed on the pushing cylinder (42) and slides through the top of the sampling insert (4), the push rod (25) slides and extends into the lifting sleeve (8), a U-shaped retaining frame (11) arranged opposite to the top of the push rod (25) is fixed on the support frame (2), a vertical bar hole (13) for the U-shaped retaining frame (11) to slide through is provided in the lifting sleeve (8), the sampling insert ( 4) is threadedly sleeved with a threaded sleeve (43), and a counterweight (29) is fixedly sleeved on the threaded sleeve (43), and the lifting assembly includes a vertical screw rod (35) rotatably mounted on the support frame (2), the vertical screw rod (35) is coaxially fixed with the output shaft of the servo motor (3), and a lifting frame (36) vertically slidably embedded on the support frame (2) is threadedly sleeved on the vertical screw rod (35), and the lifting assembly also includes a lifting frame (12) rotatably mounted on the support frame (2), an extension column (39) is fixed on the lifting frame (36), a traction rod (38) is hinged between the extension column (39) and the lifting frame (12), and a guide strip is provided on the lifting frame (12) The lifting sleeve (8) has a hole (18), an extension slide column (14) fixed to the side wall of the lifting sleeve (8) is slidably installed in the guide bar hole (18), the grab assembly includes a plurality of circumferentially evenly distributed extension sleeve blocks (23) fixed to the bottom of the lifting plate (20), a radial rod (22) is horizontally installed on the extension sleeve block (23) and slides radially along the lifting plate (20), an L-shaped hook plate (21) connected to the docking seat (19) is fixed to the end of the radial rod (22), the grab assembly also includes an annular groove (28) annularly opened on the side wall of the docking seat (19), the L-shaped hook plate (21) is clamped in the annular groove (28), and the upper side wall of the docking seat (19) is provided with a conical surface (27),The unlocking assembly includes a plurality of unlocking vertical plates (6) vertically slidably mounted on the top of the support frame (2), an upper wedge block (15) is fixed to one end of each radial rod (22) away from the L-shaped hook plate (21), and the unlocking vertical plates (6) correspond vertically to the upper wedge blocks (15) one by one. The unlocking assembly also includes a threaded sleeve (9) rotatably mounted on the top of the support frame (2), an adjustment frame (7) is threadedly sleeved on the threaded sleeve (9), the unlocking vertical plates (6) are fixed to the bottom of the adjustment frame (7), an adjustment wheel (10) is fixedly sleeved on the threaded sleeve (9), and the lifting sleeve (8) vertically slides through the threaded sleeve (9).

2. A soil pollutant collection and detection device according to claim 1, characterized in that: The scraper assembly comprises a rotating sleeve (31) rotatably mounted in the pushing cylinder (42), the rotating sleeve (31) rotatably sleeved on the pushing rod (25), and a vertical spring (30) sleeved on the pushing rod (25) is fixed between the rotating sleeve (31) and the top of the sampling insert (4).

3. A soil pollutant collection and detection device according to claim 2, characterized in that: The scraper assembly also includes a plurality of guide blocks (33) radially slidably mounted on the push cylinder (42), one end of each guide block (33) is fixed with a scraper (32) abutting against the inner wall of the sampling insert (4), the other end of each guide block (33) is fixedly connected to the push cylinder (42) with a push spring (34), the side wall of the sampling insert (4) is provided with two arc grooves (16) symmetrical about its axis center, each arc groove (16) is slidably mounted with a sliding pin (17) fixed to the push cylinder (42), and the two sliding pins (17) are symmetrical about the axis center of the push cylinder (42).

4. A soil pollutant collection and detection device according to any one of claims 1 to 3, characterized in that: The guide assembly comprises a plurality of correction blocks (41) which radially slide through the side wall of the guide sleeve (5); a sleeve block (40) which is fixed to the outer wall of the guide sleeve (5) is sleeved on the correction block (41); a connecting spring (26) is fixed between the sleeve block (40) and the correction block (41); and a slope (37) located inside the guide sleeve (5) is formed on the upper side wall of the correction block (41).

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