A special soil sampling device for soil pollution improvement

Abstract

The present invention discloses a special soil sampling device for improving soil pollution, comprising a limit baffle, a sampling mechanism, a guide mechanism, a fixing rod, a supporting slide, a connecting bottom plate, a fixing shell, a mounting top plate, a limit rotating groove, a connecting motor and a transmission gear. The present invention sets a sampling mechanism, and when sampling, the sampling mechanism can perform multiple groups of sampling at different positions in the same area, thereby improving the diversity of sampling. At the same time, when the sampling mechanism completes sampling and is recycled, the supporting guide shaft inside the sampling mechanism can cooperate with the positioning mechanism, and then automatically remove the collection head, thereby improving the efficiency of subsequent users to recycle the collection head.

Description

Technical Field

[0001] The invention relates to the technical field of soil pollution prevention and control equipment, in particular to a special soil sampling equipment for improving soil pollution. Background Art

[0002] Soil pollutants generally include acids, alkalis, heavy metals, salts, compounds of radioactive elements cesium and strontium, and compounds containing arsenic, selenium, and fluorine. When the soil contains too many harmful substances and exceeds the self-purification capacity of the soil, it will cause changes in the composition, structure, and function of the soil to the extent that it endangers human health. This is soil pollution. When improving soil pollution, the first thing to do is to conduct multi-directional sampling of the contaminated soil to determine the extent and type of soil pollution, so as to facilitate subsequent targeted measures.

[0003] However, the existing contaminated soil sampling equipment has insufficient automation when sampling contaminated soil. It cannot sample soil at different depths according to needs, and after sampling is completed, the sampling tube cannot be quickly unloaded and collected, which reduces the efficiency of subsequent sampling. Therefore, there is an urgent need for a special soil sampling equipment for soil pollution improvement to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a soil sampling device specially used for improving soil pollution, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a soil sampling device specially used for improving soil pollution, comprising a limit baffle, a sampling mechanism, a guide mechanism, a fixing rod, a supporting slide, a connecting bottom plate, a fixing shell, an installing top plate, a limit rotating groove, a connecting motor and a transmission gear,

[0006] A mounting top plate for limiting is fixedly installed on the upper end surface of the fixed shell, a connecting bottom plate is fixedly installed at the center of the lower end surface of the fixed shell, a fixing rod is symmetrically fixedly installed between the mounting top plate and the connecting bottom plate, and a limiting rotation groove for positioning is opened at the center of the upper end surface of the mounting top plate, a connecting motor is fixedly installed on the upper end surface of the mounting top plate just opposite to the limiting rotation groove, and a transmission gear is fixedly installed at the center of the lower end surface of the connecting motor, a guiding mechanism for guiding is rotatably clamped on the inner end surface of the mounting top plate, and a sampling mechanism for sampling is slidably clamped on the center of the side end surface of the fixed shell through a fixing rod.

[0007] The guide mechanism includes a flip shaft, a connecting gear and a closed slide groove. A connecting gear for transmission is fixedly installed at the center of the upper end surface of the flip shaft, and two groups of spiral and mutually interpenetrating closed slide grooves are opened on the outer end surface of the flip shaft.

[0008] Preferably, the sampling mechanism comprises a positioning mechanism, a fixed chuck, a supporting guide shaft, a threaded groove, a fixed slide groove, a positioning slider, a connecting slide, a clamping support plate, a fixing hole, a spring ring and a limiting clamp plate, wherein a positioning slider for guiding is fixedly installed at the center of the rear end surface of the clamping support plate, and a connecting slide for connecting is rotatably connected at the center of the rear end surface of the positioning slide plate, and a fixing hole for guiding is symmetrically opened on the upper end surface of the clamping support plate near the positioning slide block, and a fixed slide groove is opened near the center of the upper end surface of the clamping support plate, and a spring ring is elastically slidably clamped on the upper end surface of the clamping support plate through the spring ring, a fixed chuck for supporting is fixedly installed at the center of the lower end surface of the spring ring, and six groups of limiting clamp plates are evenly and equidistantly fixedly connected to the inner end surface of the fixed chuck, the upper end surface of the clamping support plate is evenly and equidistantly opened with six groups of threaded grooves with the fixed slide groove as the center, the inner end surface of the threaded groove is threadedly connected with a positioning mechanism for sampling, and the limiting clamp plate is slidably clamped inside the positioning mechanism.

[0009] Preferably, the positioning mechanism comprises a connecting slide slot, a positioning card shaft, an installation slot, a spring clamp, a connecting top plate, a limiting mechanism, a collecting head, a clamping slide slot, a mounting clamp plate and a fixing cylinder, the outer end surface of the fixing cylinder is provided with a connecting slide slot near the top, the inner end surface of the fixing cylinder is slidably clamped with the positioning card shaft, and the mounting slot is provided at the center of the outer end surface of the positioning card shaft, and a guide rod is fixedly installed at the end head of the bottom end surface of the positioning card shaft, the outer end surface of the guide rod is elastically slidably clamped with the inner part of the fixing cylinder through a spring clamp, and six groups of connecting top plates are evenly and equidistantly fixedly connected at the end head of the guide rod, the bottom end surface of the fixing cylinder is fixedly installed with a mounting clamp plate, and six groups of clamping slide slots are evenly and equidistantly provided on the outer end surface of the mounting clamp plate, and the inner end surface of the clamping slide slot is elastically rotatably clamped with the limiting mechanism, and the mounting clamp plate is elastically clamped with the collecting head through the clamping slide slot.

[0010] Preferably, the limiting mechanism includes a spring shaft, a clamping plate, a plug-in groove and a connecting fillet, the spring shaft is symmetrically fixedly connected to the end of the side end surface of the clamping plate, and a connecting fillet is provided on the inner end surface of the clamping plate, and a plug-in groove is provided on the inner end surface of the clamping plate near the end.

[0011] Preferably, the collecting head includes a sampling tube for sampling, a positioning square tube that is detachably fixed to the top of the sampling tube, and a limiting ring that is fixedly connected to the middle of the sampling tube. A positioning square groove is provided at the bottom of the guide rod, and the positioning square groove is adapted and movably connected to the positioning square tube. When a new collecting head is subsequently installed, the user can position it through the positioning square tube and the positioning square groove. Then, when the sampling mechanism moves downward, the limiting mechanism can automatically clamp the collecting head.

[0012] Preferably, the plug-in slot is matched with the limiting ring, and the collecting head is matched with the limiting ring through the plug-in slot and then elastically clamped inside the limiting mechanism, which can improve the stability of subsequent limiting of the collecting head.

[0013] Preferably, a connecting bottom groove is provided inside the snap-fitting groove, and snap-fitting grooves are symmetrically provided on the inner wall of the snap-fitting groove, and the connecting bottom groove is adapted to be slidably snap-fitted with the connecting top plate, and the connecting top plate is directly opposite to the connecting fillet, and the spring shaft is fixedly connected to the snap-fitting groove, and the spring shaft includes a fixed shaft for support, a connecting shaft rotatably connected to the upper part of the fixed shaft, and a connecting spring for connecting the fixed shaft and the connecting shaft, and under normal conditions, the limiting mechanism can fit tightly into the inside of the snap-fitting groove under the torsional force of the connecting spring.

[0014] Preferably, the limit card plate is slidably engaged with the mounting groove, and the positioning card shaft is slidably engaged inside the connecting groove by adapting the limit card plate to the mounting groove. When the limit card plate moves downward, it can drive the positioning card shaft to move together through the mounting groove, thereby facilitating the subsequent provision of sufficient power basis for the automatic unloading collection head.

[0015] Preferably, the fixing hole is adapted to the fixing rod, and the sampling mechanism is adapted to the fixing rod through the fixing hole and then slidably engaged with the outer end face of the fixed shell, the connecting slider is cylindrical, the diameter of the connecting slider is equal to the width of the closed slide groove, and the connecting slider is adapted to and slidably engaged with the closed slide groove, the cross-sections of the positioning slider and the supporting slide groove are both T-shaped, the sampling mechanism is adapted to the supporting slide groove through the positioning slider and then slidably engaged with the inner end face of the fixed shell, the fixing rod and the supporting slide groove can cooperate with the fixing hole and the positioning slider, thereby improving the two different limiting methods to limit the sampling mechanism, and improving the stability of the sliding displacement of the sampling mechanism outside the fixed shell.

[0016] Preferably, the connecting slider is arranged in a rectangular shape, and the width of the connecting slider is the same as the width of the closed slide groove, and the connecting slider is adapted to slide and snap into the closed slide groove. The connecting slider arranged in a rectangular shape can be slidably snapped into the inside of the closed slide groove, and the rectangle can prevent the connecting slider from deflecting when passing through the junction of two sets of closed slide grooves, thereby improving the sliding stability.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a sampling mechanism. When sampling, the sampling mechanism can perform multiple groups of sampling on different positions in the same area, thereby improving the diversity of sampling. At the same time, when the sampling mechanism completes sampling and recovers, the supporting guide shaft inside the sampling mechanism can cooperate with the positioning mechanism to automatically remove the collection head, thereby improving the efficiency of subsequent users in recovering the collection head.

[0019] 2. The present invention sets a guide mechanism, and the closed slide groove inside the guide mechanism can quickly guide the connecting slider. At the same time, because the closed slide groove is a closed spiral setting, the guide mechanism can drive the sampling mechanism to move up and down cyclically when it rotates, thereby providing sufficient limiting basis for subsequent sampling of the sampling mechanism and improving the stability of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded view of the main body of the present invention;

[0021] Figure 2 It is the main assembly diagram of the present invention;

[0022] Figure 3 It is a front view of the main body of the present invention;

[0023] Figure 4 It is a cross-sectional view along the AA front view of the main body of the present invention;

[0024] Figure 5 It is a partial enlarged view of location I of the present invention;

[0025] Figure 6 An exploded view of the sampling mechanism of the present invention;

[0026] Figure 7 It is an assembly diagram of the sampling mechanism of the present invention;

[0027] Figure 8 An exploded view of the positioning mechanism of the present invention;

[0028] Fig. 9 It is a schematic diagram of the structure of the limiting mechanism of the present invention;

[0029] Fig.10 It is a schematic diagram of the structure of the guide mechanism of the present invention;

[0030] Fig.11 It is a schematic structural diagram of a second embodiment of a connecting slider of the present invention.

[0031] In the figure: 1-limit baffle, 2-sampling mechanism, 3-guide mechanism, 4-fixed rod, 5-support slide, 6-connecting bottom plate, 7-fixed shell, 8-mounting top plate, 9-limited rotating groove, 10-connecting motor, 11-transmission gear, 21-positioning mechanism, 22-fixed chuck, 23-support guide shaft, 24-thread groove, 25-fixed slide, 26-positioning slider, 27-connecting slider, 28-clamping support plate, 29-fixing hole, 210-spring ring , 2101-limiting card plate, 211-connecting slide groove, 212-positioning card shaft, 213-installing groove, 214-spring clamping ring, 215-connecting top plate, 216-limiting mechanism, 217-collecting head, 218-clamping slide groove, 219-installing card plate, 2110-fixing cylinder, 2161-spring shaft, 2162-clamping plate, 2163-plug-in groove, 2164-connecting fillet, 31-flip shaft, 32-connecting gear, 33-closed slide groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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 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.

[0033] See also Figure 1-10 The present invention provides an embodiment: a soil sampling device for soil pollution improvement, comprising a limit baffle 1, a sampling mechanism 2, a guide mechanism 3, a fixing rod 4, a supporting slide 5, a connecting bottom plate 6, a fixing shell 7, an installation top plate 8, a limit rotating groove 9, a connecting motor 10 and a transmission gear 11,

[0034] A mounting top plate 8 for limiting is fixedly installed on the upper end surface of the fixed shell 7, a connecting bottom plate 6 is fixedly installed at the center of the lower end surface of the fixed shell 7, a fixing rod 4 is symmetrically fixedly installed between the mounting top plate 8 and the connecting bottom plate 6, and a limiting rotation groove 9 for positioning is opened at the center of the upper end surface of the mounting top plate 8, a connecting motor 10 is fixedly installed at the upper end surface of the mounting top plate 8 opposite to the limiting rotation groove 9, and a transmission gear 11 is fixedly installed at the center of the lower end surface of the connecting motor 10, a guide mechanism 3 for guiding is rotatably clamped on the inner end surface of the mounting top plate 8, and a sampling mechanism 2 for sampling is slidably clamped at the center of the side end surface of the fixed shell 7 through the fixing rod 4,

[0035] The guide mechanism 3 includes a flip shaft 31, a connecting gear 32 and a closed slide groove 33. A connecting gear 32 for transmission is fixedly installed at the center of the upper end surface of the flip shaft 31, and two groups of spiral and mutually interpenetrating closed slide grooves 33 are opened on the outer end surface of the flip shaft 31.

[0036] The sampling mechanism 2 includes a positioning mechanism 21, a fixed chuck 22, a supporting guide shaft 23, a threaded groove 24, a fixed slide 25, a positioning slider 26, a connecting slider 27, a clamping support plate 28, a fixing hole 29, a spring ring 210 and a limit clamp plate 2101. A positioning slider 26 for guiding is fixedly installed at the center of the rear end surface of the clamping support plate 28, and a connecting slider 27 for connecting is rotatably connected at the center of the rear end surface of the positioning slider 26. The upper end surface of the clamping support plate 28 is symmetrically provided with a fixing hole 29 for guiding near the positioning slider 26, and the fixing hole 29 is located at the upper end of the clamping support plate 28. A fixed slide groove 25 is provided near the center of the surface, and the upper end surface of the clamping support plate 28 is elastically slidably clamped with a spring ring 210 through a spring ring 210. A fixed chuck 22 for support is fixedly installed at the center of the lower end surface of the spring ring 210, and six groups of limiting clamps 2101 are evenly and equidistantly fixedly connected to the inner end surface of the fixed chuck 22. Six groups of thread grooves 24 are evenly and equidistantly provided on the upper end surface of the clamping support plate 28 with the fixed slide groove 25 as the center. The inner end surface of the thread groove 24 is threadedly connected with a positioning mechanism 21 for sampling, and the limiting clamp 2101 is slidably clamped inside the positioning mechanism 21.

[0037] The positioning mechanism 21 includes a connecting slide 211, a positioning card shaft 212, a mounting groove 213, a spring snap ring 214, a connecting top plate 215, a limiting mechanism 216, a collecting head 217, a clamping slide 218, a mounting card plate 219 and a fixed cylinder 2110. The outer end surface of the fixed cylinder 2110 is provided with a connecting slide 211 near the top, the inner end surface of the fixed cylinder 2110 is slidably clamped with the positioning card shaft 212, and a mounting groove 213 is provided at the center of the outer end surface of the positioning card shaft 212. The bottom end surface of the positioning card shaft 212 is fixedly installed. There is a guide rod, the outer end face of the guide rod is elastically slidably clamped with the inside of the fixed cylinder 2110 through a spring clamping ring 214, and six groups of connecting top plates 215 are evenly and equidistantly fixedly connected at the end of the guide rod, a mounting clamping plate 219 is fixedly installed on the bottom end face of the fixed cylinder 2110, and six groups of clamping grooves 218 are evenly and equidistantly opened on the outer end face of the mounting clamping plate 219, and the inner end face of the clamping groove 218 is elastically rotatably clamped with a limiting mechanism 216, and the mounting clamping plate 219 is elastically clamped with a collecting head 217 through the clamping groove 218.

[0038] The limiting mechanism 216 includes a spring shaft 2161, a clamping plate 2162, a plug-in groove 2163 and a connecting fillet 2164. The spring shaft 2161 is symmetrically fixedly connected to the end of the side end surface of the clamping plate 2162, and a connecting fillet 2164 is provided on the inner end surface of the clamping plate 2162. The plug-in groove 2163 is provided on the inner end surface of the clamping plate 2162 near the end.

[0039] The collecting head 217 includes a sampling tube for sampling, a positioning square tube that is detachably fixed and clamped on the top of the sampling tube, and a limiting ring that is fixedly connected to the middle of the sampling tube. A positioning square groove is provided at the bottom of the guide rod, and the positioning square groove and the positioning square tube are adapted and movably clamped. When the new collecting head 217 is subsequently installed, the user can position it through the positioning square tube and the positioning square groove. Then, when the sampling mechanism 2 moves downward, the limiting mechanism 216 can automatically clamp the collecting head 217.

[0040] The plug-in slot 2163 is matched with the limiting ring, and the collecting head 217 is matched with the limiting ring through the plug-in slot 2163 and then elastically clamped in the interior of the limiting mechanism 216, which can improve the stability of the subsequent limiting of the collecting head 217.

[0041] A connecting bottom groove is provided inside the snap-in groove 218, and snap-in grooves are symmetrically provided on the inner wall of the snap-in groove 218, and the connecting bottom groove is adapted to slide and snap-in with the connecting top plate 215, and the connecting top plate 215 is directly opposite to the connecting fillet 2164, and the spring shaft 2161 is fixedly connected to the snap-in groove. The spring shaft 2161 includes a fixed shaft for support, a connecting shaft rotatably connected to the upper part of the fixed shaft, and a connecting spring for connecting the fixed shaft and the connecting shaft. Under normal conditions, the limiting mechanism 216 can fit tightly into the inside of the snap-in groove 218 under the torsional force of the connecting spring.

[0042] The limiting card plate 2101 is slidably engaged with the mounting groove 213, and the positioning card shaft 212 is adapted to the mounting groove 213 through the limiting card plate 2101 and then slidably engaged inside the connecting slide groove 211. When the limiting card plate 2101 moves downward, it can drive the positioning card shaft 212 to move together through the mounting groove 213, thereby facilitating the subsequent provision of sufficient power foundation for the automatic unloading collection head 217.

[0043] The fixing hole 29 is adapted to the fixing rod 4, and the sampling mechanism 2 is adapted to the fixing rod 4 through the fixing hole 29 and then slidably engaged with the outer end surface of the fixed shell 7. The connecting slider 27 is set in a cylindrical shape, and the diameter of the connecting slider 27 is equal to the width of the closed slide groove 33, and the connecting slider 27 is adapted to slide and engage with the closed slide groove 33. The cross-sections of the positioning slider 26 and the supporting slide groove 5 are both set in a T shape. The sampling mechanism 2 is adapted to the supporting slide groove 5 through the positioning slider 26 and then slidably engaged with the inner end surface of the fixed shell 7. The fixing rod 4 and the supporting slide groove 5 can cooperate with the fixing hole 29 and the positioning slider 26, thereby improving the two different limiting methods to limit the sampling mechanism 2, and improving the stability of the sliding displacement of the sampling mechanism 2 outside the fixed shell 7.

[0044] like Fig.11The second embodiment of the connecting slider 27 is shown, which is different from the first embodiment in that the connecting slider 27 is arranged in a rectangular shape, and the width of the connecting slider 27 is the same as the width of the closed slide groove 33, and the connecting slider 27 and the closed slide groove 33 are adapted to slide and snap into each other. The connecting slider 27 arranged in a rectangular shape can be slidably snapped into the closed slide groove 33, and the rectangle can prevent the connecting slider 27 from deflecting when passing through the junction of two sets of closed slide grooves 33, thereby improving the sliding stability.

[0045] Working principle: Figure 1-5 As shown, when sampling contaminated soil, the user can install the device on an external displacement mechanism, such as a transport vehicle, so as to facilitate the subsequent rapid transportation and displacement of the device, thereby facilitating the subsequent rapid sampling and collection of contaminated soil in different regions, thereby improving the efficiency of subsequent sampling and collection of contaminated soil.

[0046] like Figure 1 , Figure 4 and Figure 5 As shown, when sampling the soil, the user can start the connecting motor 10 through the external control mechanism. At this time, the connecting motor 10 can drive the transmission gear 11 to rotate, and then the transmission gear 11 can drive the flip shaft 31 to rotate through the connecting gear 32. When the flip shaft 31 rotates, the flip shaft 31 can drive the closed slide 33 to rotate together. At the same time, since the closed slide 33 is internally slidably connected with the connecting slider 27, and the outside of the closed slide 33 is spirally arranged, when the closed slide 33 rotates, the connecting support plate 28 can be driven to move downward outside the fixed shell 7 through the connecting slider 27. At the same time, the positioning slider 26 can be slidably connected to the inside of the supporting slide 5, thereby improving the stability of the sampling mechanism 2 in being able to move outside the fixed shell 7, which is convenient for the subsequent rapid collection operation of the contaminated soil.

[0047] like Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, when sampling is performed, the connecting slider 27 can be displaced downward under the drive of the closed chute 33. At this time, the clamping support plate 28 can simultaneously drive the six groups of positioning mechanisms 21 to be displaced together. When displaced to the surface of the contaminated soil, the collecting head 217 at the bottom of the positioning mechanism 21 can directly penetrate into the soil, which is convenient for sampling. At the same time, the positioning clamp shaft 212 and the fixing cylinder 2110 can provide sufficient limiting foundation for the collecting head 217, thereby improving the stability of the collecting head 217 in shuttling inside the soil. When the connecting slider 27 is displaced to the bottom of the closed chute 33, the sampling depth reaches the maximum, and the collecting head 217 can be recovered at this time.

[0048] When the sampling is completed and the collecting head 217 is recovered, the connecting motor 10 can continue to drive the connecting gear 32 to rotate through the transmission gear 11. Since the closed slide groove 33 is composed of two sets of relatively spiral grooves, when the connecting slider 27 moves to the bottom of the closed slide groove 33 on one side, it can directly enter the inside of the rising closed slide groove 33 on the other side, so that when the guide mechanism 3 rotates, the closed slide groove 33 can drive the connecting slider 27 to rise. At the same time, when the connecting slider 27 drives the clamping support plate 28 to rise to the bottom near the limit baffle 1, the user can take out the storage box to prepare to store the collecting head 217.

[0049] First, as the support guide shaft 23 continues to rise, it can press on the bottom of the limit baffle 1. At this time, the support guide shaft 23 moves downward under the limit of the limit baffle 1, and at the same time, the support guide shaft 23 can drive the fixed chuck 22 to move downward, and the fixed chuck 22 can drive the positioning card shaft 212 inside the positioning mechanism 21 to move downward through the limit card plate 2101. At the same time, the positioning card shaft 212 can drive the connecting top plate 215 to move downward through the guide rod, and the connecting top plate 215 can directly press on the outside of the connecting fillet 2164 when it is displaced. As the connecting top plate 215 moves, the six groups of limit mechanisms 216 can be pushed open to the outside, so that the six groups of limit mechanisms 216 can be opened to the outside, thereby releasing the restriction on the collecting head 217. At this time, the collecting head 217 falls into the storage box prepared in advance by the staff, and the new collecting head 217 can be installed at the bottom of the guide rod to facilitate subsequent sampling.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device specially designed for soil pollution improvement, characterized in that: It comprises a limit baffle (1), a sampling mechanism (2), a guide mechanism (3), a fixing rod (4), a supporting slide groove (5), a connecting bottom plate (6), a fixing housing (7), a mounting top plate (8), a limit rotating groove (9), a connecting motor (10) and a transmission gear (11). A mounting top plate (8) for limiting is fixedly mounted on the upper end surface of the fixed shell (7), a connecting bottom plate (6) is fixedly mounted at the center of the lower end surface of the fixed shell (7), a fixing rod (4) is symmetrically fixedly mounted between the mounting top plate (8) and the connecting bottom plate (6), and a limiting rotation groove (9) for positioning is provided at the center of the upper end surface of the mounting top plate (8), a connecting motor (10) is fixedly mounted on the upper end surface of the mounting top plate (8) directly opposite to the limiting rotation groove (9), and a transmission gear (11) is fixedly mounted at the center of the lower end surface of the connecting motor (10), a guide mechanism (3) for guiding is rotatably engaged with the inner end surface of the mounting top plate (8), and a sampling mechanism (2) for sampling is slidably engaged with the center of the side end surface of the fixed shell (7) through the fixing rod (4), The guide mechanism (3) comprises a turning shaft (31), a connecting gear (32) and a closed slide groove (33); a connecting gear (32) for transmission is fixedly mounted at the center of the upper end surface of the turning shaft (31), and two groups of closed slide grooves (33) are provided on the outer end surface of the turning shaft (31) and are in a spiral shape and interpenetrating with each other; The sampling mechanism (2) comprises a positioning mechanism (21), a fixed chuck (22), a supporting guide shaft (23), a threaded groove (24), a fixed slide groove (25), a positioning slider (26), a connecting slider (27), a clamping support plate (28), a fixing hole (29), a spring ring (210) and a limiting clamp plate (2101); a positioning slider (26) for guiding is fixedly installed at the center of the rear end surface of the clamping support plate (28); and a connecting slider (27) for connecting is rotatably connected at the center of the rear end surface of the positioning slider (26); a fixing hole (29) for guiding is symmetrically opened on the upper end surface of the clamping support plate (28) near the positioning slider (26); and a fixing hole (29) for guiding is symmetrically opened on the upper end surface of the clamping support plate (28) near the positioning slider (26); and a fixing hole (29) for guiding is symmetrically opened on the upper end surface of the clamping support plate (28) ) is provided with a fixed slide groove (25) near the center of the upper end surface of the clamping support plate (28), the upper end surface of the clamping support plate (28) is elastically slidably clamped with a spring ring (210) through a spring ring (210), a fixed chuck (22) for support is fixedly installed at the center of the lower end surface of the spring ring (210), and six groups of limit clamping plates (2101) are evenly and equidistantly fixedly connected to the inner end surface of the fixed chuck (22), the upper end surface of the clamping support plate (28) is provided with six groups of thread grooves (24) evenly and equidistantly with the fixed slide groove (25) as the center, the inner end surface of the thread groove (24) is threadedly connected with a positioning mechanism (21) for sampling, and the limit clamping plate (2101) is slidably clamped inside the positioning mechanism (21); The fixing hole (29) is matched with the fixing rod (4), and the sampling mechanism (2) is matched with the fixing rod (4) through the fixing hole (29) and then slidably engaged with the outer end surface of the fixed shell (7); the connecting slider (27) is cylindrical, the diameter of the connecting slider (27) is equal to the width of the closed slide groove (33), and the connecting slider (27) is matched with the closed slide groove (33) for sliding engagement; the cross sections of the positioning slider (26) and the supporting slide groove (5) are both T-shaped, and the sampling mechanism (2) is matched with the supporting slide groove (5) through the positioning slider (26) and then slidably engaged with the inner end surface of the fixed shell (7); The connecting slider (27) is arranged in a rectangular shape, and the width of the connecting slider (27) is the same as the width of the closed slide groove (33), and the connecting slider (27) and the closed slide groove (33) are adapted to slide and engage with each other; When sampling soil, the user can start the connecting motor (10) through the external control mechanism, and the connecting motor (10) can drive the transmission gear (11) to rotate, so that the transmission gear (11) can drive the flip shaft (31) to rotate through the connecting gear (32). When the flip shaft (31) rotates, the flip shaft (31) can drive the closed slide groove (33) to rotate together. At the same time, since the closed slide groove (33) is internally slidably engaged with the connecting slider (27), and the closed slide groove (33) is spirally arranged outside, when the closed slide groove (33) rotates, the connecting support plate (28) can be driven to move downward outside the fixed shell (7) through the connecting slider (27), and the positioning slider (26) can be slidably engaged inside the supporting slide groove (5), thereby improving the stability of the sampling mechanism (2) in being able to move outside the fixed shell (7).

2. The soil sampling device for soil pollution improvement according to claim 1 is characterized by: The positioning mechanism (21) comprises a connecting slide groove (211), a positioning clamping shaft (212), a mounting groove (213), a spring clamping ring (214), a connecting top plate (215), a limiting mechanism (216), a collecting head (217), a clamping slide groove (218), a mounting clamping plate (219) and a fixing cylinder (2110). The outer end surface of the fixing cylinder (2110) is provided with a connecting slide groove (211) near the top. The inner end surface of the fixing cylinder (2110) is slidably clamped with the positioning clamping shaft (212), and a mounting groove (213) is provided at the center of the outer end surface of the positioning clamping shaft (212). The bottom end surface of the positioning clamping shaft (212) is provided with a connecting slide groove (211). A guide rod is fixedly installed at the position, and the outer end surface of the guide rod is elastically slidably engaged with the interior of the fixed cylinder (2110) through a spring retaining ring (214), and six groups of connecting top plates (215) are evenly and equidistantly fixedly connected at the end of the guide rod, and a mounting clamping plate (219) is fixedly installed on the bottom end surface of the fixed cylinder (2110), and six groups of engaging grooves (218) are evenly and equidistantly opened on the outer end surface of the mounting clamping plate (219), and the inner end surface of the engaging groove (218) is elastically rotatably engaged with a limiting mechanism (216), and the mounting clamping plate (219) is elastically engaged with a collecting head (217) through the engaging groove (218).

3. The soil sampling device for soil pollution improvement according to claim 2 is characterized by: The limiting mechanism (216) comprises a spring shaft (2161), a clamping plate (2162), a plug-in slot (2163) and a connecting fillet (2164); the spring shaft (2161) is symmetrically fixedly connected to the end of the side end surface of the clamping plate (2162); a connecting fillet (2164) is provided on the inner end surface of the clamping plate (2162); and the plug-in slot (2163) is provided on the inner end surface of the clamping plate (2162) near the end.

4. The soil sampling device for soil pollution improvement according to claim 3 is characterized by: The collecting head (217) comprises a sampling tube for sampling, a positioning square tube detachably fixedly connected to the top of the sampling tube, and a limiting ring fixedly connected to the middle of the sampling tube. A positioning square groove is provided at the bottom of the guide rod, and the positioning square groove is adapted to be movably connected to the positioning square tube.

5. The soil sampling device for soil pollution improvement according to claim 4 is characterized in that: The insertion groove (2163) is matched with the limiting ring, and the collecting head (217) is matched with the limiting ring through the insertion groove (2163) and is elastically clamped inside the limiting mechanism (216).

6. The soil sampling device for soil pollution improvement according to claim 5 is characterized by: A connecting bottom groove is provided inside the snap-in slide groove (218), and snap-in grooves are symmetrically provided on the inner wall of the snap-in slide groove (218), and the fixed cylinder (2110) is adapted to slide and snap-in with the connecting top plate (215), and the connecting top plate (215) is directly opposite to the connecting fillet (2164), and the spring shaft (2161) is fixedly connected with the snap-in groove, and the spring shaft (2161) includes a fixed shaft for support, a connecting shaft rotatably connected to the upper part of the fixed shaft, and a connecting spring for connecting the fixed shaft and the connecting shaft.

7. The soil sampling device for soil pollution improvement according to claim 6 is characterized by: The limiting clamping plate (2101) is slidably engaged with the mounting groove (213), and the positioning clamping shaft (212) is adapted to the mounting groove (213) through the limiting clamping plate (2101) and is then slidably engaged inside the connecting sliding groove (211).

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