Sampling device for soil pollution prevention and control

Abstract

The invention discloses a sampling device for soil pollution prevention and control, and belongs to the technical field of soil sampling. Comprising an outer supporting frame and a collecting unit, collected soil penetrates through and is adsorbed into an inner cavity of a cylinder, a matched installation block is upwards inserted into an inner cavity of a matched groove, the cylinder and a base are attached to each other, and when the cylinder and the base are connected and attached to each other, an insertion piece is transversely inserted into a gap between the cylinder and the base; the outer end of the arranged insertion piece can block the gap between the cylinder and the base, leakage and loss of a soil sample in the sampling process can be avoided, the integrity and reliability of the collected soil sample can be guaranteed, when the humidity of the collected soil sample is high, it is guaranteed that the high-humidity soil sample is effectively treated, and the sampling efficiency is improved. The soil sampling device has the advantages that soil samples can be effectively collected and reserved, loss or leakage of the soil samples is avoided, unpassed soil samples can be effectively treated, efficiency and integrity in the soil sampling process are improved, and representativeness and reliability of the collected soil samples are guaranteed.

Description

Technical Field

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

[0002] Soil pollution is a global environmental problem that poses a serious threat to human health, ecosystems and agricultural sustainability. Soil pollution refers to the phenomenon that pollutants generated by human activities enter the soil and accumulate to a certain extent, causing soil quality deterioration and causing harm. The main sources of soil pollution include sewage irrigation, utilization of solid waste, irrational use of pesticides and fertilizers, atmospheric precipitation, and mining activities. Soil pollution will lead to reduced crop yields and quality, groundwater and surface water pollution, reduced atmospheric environmental quality, and ultimately endanger human health. Methods for controlling soil pollution include physical remediation, chemical remediation, biological remediation, etc. Traditional soil sampling tools include manual shovels, shovels, drills, etc., which are used to collect soil samples for pollution detection.

[0003] Most of the soil sampling devices currently available on the market are unable to collect soil samples of different humidity levels, and cannot guarantee that soil samples can be effectively collected and retained; therefore, a sampling device for soil pollution prevention and control is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a sampling device for soil pollution prevention and control.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A sampling device for soil pollution prevention and control comprises an outer support frame and a collection unit, wherein the inner cavity of the outer support frame is interspersed with the collection unit, wherein the collection unit comprises a collection tube and a storage tray installed on the top of the collection tube, wherein two groups of storage trays are connected in series via an adsorption mechanism, wherein an auxiliary frame is vertically interspersed with the lower end surface of the adsorption mechanism, and the soil sample collected by upward adsorption will pass through the gap of the storage tray, so that the soil sample is retained on the upper end surface of the storage tray, and the inner end surfaces of the first mounting frame and the second mounting frame are arranged to surround and protect the outer end surface of the storage tray, so as to prevent the soil sample collected by upward adsorption from falling out of the device.

[0006] Preferably, the collection barrel comprises a barrel and a feed filter ball provided at the middle position of the bottom of the barrel, the bottom of the barrel is provided with a matching groove in an annular array, the lower end surface of the barrel is provided with a base, the upper end surface of the base is provided with a matching mounting block in an annular array, a connecting hole is provided in the middle of the matching mounting block, the matching mounting block is inserted into the inner cavity of the matching groove, so that the barrel and the base are combined into a whole, the feed filter ball passes through the inner cavity wall of the connecting hole, and the whole device is placed horizontally just above the soil to be sampled, so that the bottom of the collection barrel is directly aligned with the top of the sampled soil, after passing through the connecting hole, the feed filter ball is in direct contact with the soil, and the collected soil passes through and is absorbed into the inner cavity of the barrel, the matching mounting block is inserted upward into the inner cavity of the matching groove, so that the barrel and the base are fitted together, and while the two are connected and fitted together, the insertion piece is inserted horizontally into the gap between the barrel and the base, and the outer end of the provided insertion piece can block the gap between the barrel and the base, which can not only avoid leakage and loss of soil samples during the sampling process, but also ensure the integrity and reliability of the collected soil samples.

[0007] Preferably, the adsorption mechanism includes a third mounting frame and a material passing inner cylinder opened in the middle position of the third mounting frame, wrapping frames are vertically arranged at both ends of the lower surface of the third mounting frame, bending frames are arranged on both sides of the wrapping frame, the bending frames are connected in series through a series frame, and adsorption tubes are vertically arranged on the lower end surface of the third mounting frame.

[0008] Preferably, the auxiliary frame includes a frame block and an outer groove formed on a side end face of the frame block, a first discharge hole is formed in the middle of the frame block, an inner cavity wall of the first discharge hole is provided with annular grooves, second discharge holes are vertically arranged on both sides of the first discharge hole, and vertical grooves are formed in an annular array on the inner cavity wall of the second discharge hole. When the pollution degree of the collected soil is low, in order to avoid the mixing of external pollutants, the inner cavity of the vertical grooves arranged in the annular array in the second discharge hole is vertically connected to the air inlet pipe, and the other end of the air inlet pipe is connected to the fan, and multiple groups of air inlet pipes form a surrounding jet airflow at the bottom of the second discharge hole, surrounding The jet air flow continuously blows vertically downward toward the collected soil with a lower degree of pollution. The continuous jetting of the air flow cleans the impurities on the surface of the collected soil, effectively preventing pollutants in the external environment from mixing into the soil sample, ensuring the accuracy and reliability of the collected soil sample. The continuous jetting of the air flow can continuously clean the impurities and pollutants on the soil surface, improve the purity of the soil sample, and provide clean soil samples for subsequent analysis and testing. While cleaning impurities and pollutants, the adsorption tube in the inner cavity of the second discharge hole adsorbs the collected soil sample upward.

[0009] Preferably, the side end surface of the outer groove is in contact with the outer end wall of the cylinder and the base, so that the collecting cylinder and the auxiliary frame become a whole. When the humidity of the collected soil sample is low, the collected soil is in the form of larger particles, which can directly contact the surface of the collected soil through the bottom of the frame block. The soil particle samples to be collected are adsorbed by the adsorption tube that passes through the inner cavity of the first discharge hole and the second discharge hole, and the operator can insert the activated carbon ring into the inner cavity of the annular groove in advance. When the adsorption tube collects soil particles upward, the organic matter in the soil will be adsorbed by the activated carbon ring and enter the gap between the first discharge hole and the adsorption tube. The activated carbon can adsorb the organic matter in the soil, improve the analysis effect and accuracy of the organic matter in the soil sample, help protect the organic matter in the soil sample, reduce the pollution and volatilization of the organic matter, and maintain the originality and purification effect of the soil sample.

[0010] Preferably, the adsorption tube is vertically inserted into the inner cavities of the first discharge hole and the second discharge hole, and the inner cavity wall diameters of the first discharge hole and the second discharge hole are consistent.

[0011] Preferably, the outer support frame includes an assembling frame and a second mounting frame mounted on a side end surface of the assembling frame, and a converging mechanism is interspersed at both ends of the second mounting frame.

[0012] Preferably, the assembly bracket includes a frame body and an insert piece transversely installed on the inner end wall of the frame body, a first mounting frame is transversely opened on the top of the frame body, and an inner surrounding pad is installed around the inner cavity wall of the first mounting frame.

[0013] Preferably, the insert sheet is laterally inserted into the gap between the cylinder and the base, and the upper end surface of the insert sheet is fitted with the bottom end surface of the feed filter ball. When the humidity of the collected soil sample is high, the soil sample cannot completely pass through the feed filter ball, and because the insert sheet laterally inserted into the gap between the cylinder and the base can preliminarily receive and collect the soil sample that is still being filtered and collected, the soil that has not passed through the feed filter ball will be received by the upper end surface of the insert sheet, ensuring the effective processing of high-humidity soil samples, ensuring that the soil samples can be effectively collected and retained, avoiding the loss or leakage of soil samples, and effectively processing the soil samples that have not passed, improving the efficiency and integrity of the soil sampling process, and ensuring that the collected soil samples are representative and reliable.

[0014] Preferably, the convergence mechanism includes a supporting cross frame and fan blades installed on the lower end surfaces of the two groups of supporting cross frames, the other end of the fan blades are connected to the side end surfaces of the mounting frame, and one end of the inner cavity wall of the two side end surfaces of the supporting cross frame is fitted to the two sides of the outer end wall of the second mounting frame. When the interval between the cylinder body and the base is replaced by a snap-fit ​​structure that cooperates with the matching groove and the matching mounting block, the tightness of the connection between the collecting cylinder and the auxiliary frame is improved, so that the feed filter ball can better collect soil, and the operator can pour the liquid used to soak the soil into the convergence mechanism from above the fan blades. Through the inwardly inclined arc opened by the fan blades, the liquid for soaking the soil passes through the middle of the mounting frame and gathers the liquid within the operating range of the overall device. With the help of the inclined arc and structure in the design, the liquid can pass through and be evenly distributed within the entire device, ensuring that the liquid can evenly soak the soil sample, improving the accuracy of the experiment or test, and allowing the liquid to converge within the operating range of the entire device, effectively avoiding liquid overflow or waste, and ensuring that the liquid is controlled and utilized within the required range.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The whole device is placed horizontally just above the soil to be sampled, so that the bottom of the collection tube is directly aligned with the top of the sampled soil. After passing through the connecting hole, the feed filter ball is in direct contact with the soil, and the collected soil penetrates and is absorbed into the inner cavity of the cylinder. The matching mounting block is inserted upward into the inner cavity of the matching groove, so that the cylinder and the base are fitted to each other. While the two are connected and fitted to each other, the insertion piece is inserted horizontally into the gap between the cylinder and the base. The outer end of the inserted piece can block the gap between the cylinder and the base, which can not only avoid leakage and loss of soil samples during the sampling process, but also ensure the integrity and reliability of the collected soil samples.

[0016] When the collected soil sample has a high humidity, the soil sample cannot completely pass through the feed filter ball, and the insertion piece laterally inserted into the gap between the cylinder and the base can initially receive and collect the soil sample that is still being filtered and collected. The soil that has not passed through the feed filter ball will be received by the upper end surface of the insertion piece, ensuring the effective processing of high-humidity soil samples, ensuring that the soil samples can be effectively collected and retained, avoiding the loss or leakage of soil samples, and effectively processing the soil samples that have not passed, improving the efficiency and integrity of the soil sampling process, and ensuring that the collected soil samples are representative and reliable.

[0017] However, when the humidity of the collected soil sample is low, the collected soil is in the form of larger particles, which can directly contact the surface of the collected soil through the bottom of the frame block, and adsorb the soil particle samples to be collected through the adsorption tube that passes through the inner cavity of the first discharge hole and the second discharge hole, and the operator can insert the activated carbon ring into the inner cavity of the annular groove in advance. When the adsorption tube collects soil particles upward, the organic matter in the soil will be adsorbed by the activated carbon ring and enter the gap between the first discharge hole and the adsorption tube. The activated carbon can adsorb the organic matter in the soil, improve the analysis effect and accuracy of organic matter in soil samples, help protect the organic matter in soil samples, reduce the pollution and volatilization of organic matter, and maintain the originality and purification effect of the soil samples.

[0018] When the pollution degree of the collected soil is low, in order to avoid the mixing of external pollutants, the inner cavity of the vertical groove arranged in the annular array in the second discharge hole is vertically connected to the external air inlet pipe, and the other end of the air inlet pipe is connected to the fan. Multiple groups of air inlet pipes form a surrounding jet airflow at the bottom of the second discharge hole. The surrounding jet airflow continuously blows vertically downward toward the collected soil with a low pollution degree. Through the continuous injection of airflow, impurities on the surface of the collected soil are cleaned, and pollutants in the external environment are effectively avoided from mixing into the soil sample, ensuring the accuracy and reliability of the collected soil sample. By continuously injecting airflow, impurities and pollutants on the soil surface can be continuously cleaned, the purity of the soil sample is improved, and clean soil samples are provided for subsequent analysis and detection. While cleaning impurities and pollutants, the adsorption tube in the inner cavity of the second discharge hole adsorbs the collected soil sample upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a sampling device for soil pollution prevention and control proposed by the present invention; Figure 2 A schematic diagram of the structure of an assembly support for a soil pollution prevention and control sampling device proposed by the present invention; Figure 3 This is a schematic diagram of the convergence mechanism structure of a sampling device for soil pollution prevention and control proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a collection unit of a sampling device for soil pollution prevention and control proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a collection tube of a sampling device for soil pollution prevention and control proposed by the present invention; Figure 6 This is a schematic diagram of the expanded structure of a collection tube of a sampling device for soil pollution prevention and control proposed by the present invention; Figure 7 This is a schematic diagram of the structure of an adsorption mechanism of a sampling device for soil pollution prevention and control proposed by the present invention; Figure 8 This is a schematic diagram of the auxiliary frame structure of a sampling device for soil pollution prevention and control proposed by the present invention; Fig. 9 A sampling device for soil pollution prevention and control proposed by the present invention Figure 8 An enlarged schematic diagram of point A.

[0020] In the figure: 1. outer support frame; 11. assembly bracket; 111. frame body; 112. insertion sheet; 113. first mounting frame; 114. inner surround pad; 12. second mounting frame; 13. convergence mechanism; 131. support cross frame; 132. fan sheet; 133. mounting frame; 2. collection unit; 21. collection cylinder; 211. cylinder body; 212. inlet filter ball; 213. matching groove; 214. base; 215. matching mounting block; 216. connecting hole; 22. storage tray; 23. adsorption mechanism; 231. third mounting frame; 232. inner cylinder for material flow; 233. wrapping frame; 234. bending frame; 235. series frame; 236. adsorption tube; 24. auxiliary frame; 241. frame block; 242. outer groove; 243. first discharge hole; 244. annular groove; 245. second discharge hole; 246. vertical groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-Figure 9 Embodiment 1, a sampling device for soil pollution prevention and control, comprising an outer support frame 1 and a collection unit 2, the inner cavity of the outer support frame 1 is interspersed with the collection unit 2, the collection unit 2 comprises a collection tube 21 and a storage tray 22 installed on the top of the collection tube 21, the two groups of storage trays 22 are connected in series through an adsorption mechanism 23, an auxiliary frame 24 is vertically interspersed with the lower end surface of the adsorption mechanism 23, the soil sample collected by upward adsorption will pass through the gap of the storage tray 22, so that the soil sample is retained on the upper end surface of the storage tray 22, the first mounting frame 113 and the inner end surface of the second mounting frame 12 are arranged to surround and protect the outer end surface of the storage tray 22, so as to prevent the soil sample collected by upward adsorption from falling out of the device.

[0023] Embodiment 2, the collection tube 21 comprises a tube body 211 and a feed filter ball 212 provided at the middle position of the bottom of the tube body 211, a matching groove 213 is provided in an annular array at the bottom of the tube body 211, a base 214 is provided on the lower end face of the tube body 211, a matching mounting block 215 is provided in an annular array on the upper end face of the base 214, a connecting hole 216 is provided in the middle of the matching mounting block 215, the matching mounting block 215 is inserted into the inner cavity of the matching groove 213, so that the tube body 211 and the base 214 are combined into a whole, the feed filter ball 212 passes through the inner cavity wall of the connecting hole 216, and the whole device is placed horizontally just above the soil to be sampled, so that the bottom of the collection tube 21 The top of the filter ball 212 is directly aimed at the top of the sampled soil. After passing through the connecting hole 216, the feed filter ball 212 is in direct contact with the soil. The collected soil penetrates and is absorbed into the inner cavity of the cylinder 211. The matching mounting block 215 is inserted upward into the inner cavity of the matching groove 213, so that the cylinder 211 and the base 214 are fitted to each other. While the two are connected and fitted to each other, the insertion piece 112 is horizontally inserted into the gap between the cylinder 211 and the base 214. The outer end of the inserted piece 112 can block the gap between the cylinder 211 and the base 214, which can not only avoid leakage and loss of soil samples during the sampling process, but also ensure the integrity and reliability of the collected soil samples.

[0024] Embodiment 3, the adsorption mechanism 23 includes a third mounting frame 231 and a material passing inner cylinder 232 opened in the middle position of the third mounting frame 231, wrapping frames 233 are vertically arranged at both ends of the lower surface of the third mounting frame 231, bending frames 234 are arranged on both sides of the wrapping frames 233, and the bending frames 234 are connected in series through series frames 235, and adsorption tubes 236 are vertically arranged on the lower end surface of the third mounting frame 231.

[0025] The auxiliary frame 24 includes a frame block 241 and an outer groove 242 opened on the side end surface of the frame block 241. A first discharge hole 243 is opened in the middle position of the frame block 241. An annular groove 244 is arranged on the inner cavity wall of the first discharge hole 243. Second discharge holes 245 are vertically arranged on both sides of the first discharge hole 243. Vertical grooves 246 are opened in an annular array on the inner cavity wall of the second discharge hole 245. When the pollution degree of the collected soil is low, in order to avoid the mixing of external pollutants, the inner cavity of the vertical grooves 246 arranged in the annular array in the second discharge hole 245 is vertically connected to the air inlet pipe, and the other end of the air inlet pipe is connected to the fan. Multiple groups of air inlet pipes are connected to the second discharge hole 245. An encircling jet airflow is formed at the bottom, and the encircling jet airflow continuously blows vertically downward toward the collected soil with a lower degree of pollution. The impurities on the surface of the collected soil are cleaned by the continuous jetting of the airflow, effectively preventing pollutants in the external environment from mixing into the soil sample, thereby ensuring the accuracy and reliability of the collected soil sample. By continuously jetting the airflow, the impurities and pollutants on the soil surface can be continuously cleaned, thereby improving the purity of the soil sample and providing a clean soil sample for subsequent analysis and testing. While the impurities and pollutants are being cleaned, the adsorption tube 236 in the inner cavity of the second discharge hole 245 adsorbs the collected soil sample upward.

[0026] In Example 4, the side end surface of the outer groove 242 is fitted to the outer end wall of the cylinder 211 and the base 214, so that the collection cylinder 21 and the auxiliary frame 24 become a whole. When the humidity of the collected soil sample is low, the collected soil is in the form of larger particles, which can directly contact the surface of the collected soil through the bottom of the frame block 241. The soil particle sample to be collected is adsorbed by the adsorption tube 236 that passes through the inner cavity of the first discharge hole 243 and the second discharge hole 245, and the operator can insert the activated carbon ring into the inner cavity of the annular groove 244 in advance. When the adsorption tube 236 collects soil particles upward, the organic matter in the soil will be adsorbed by the activated carbon ring and enter the gap between the first discharge hole 243 and the adsorption tube 236. The activated carbon can adsorb the organic matter in the soil, improve the analysis effect and accuracy of the organic matter in the soil sample, help protect the organic matter in the soil sample, reduce the pollution and volatilization of the organic matter, and maintain the originality and purification effect of the soil sample.

[0027] The adsorption tube 236 is vertically inserted into the inner cavities of the first discharge hole 243 and the second discharge hole 245 , and the inner cavity walls of the first discharge hole 243 and the second discharge hole 245 have the same diameter.

[0028] The outer support frame 1 includes an assembly bracket 11 and a second mounting frame 12 installed on the side end surface of the assembly bracket 11, and a convergence mechanism 13 is inserted at both ends of the second mounting frame 12. The assembly bracket 11 includes a frame body 111 and an insertion piece 112 transversely installed on the inner end wall of the frame body 111. A first mounting frame 113 is transversely opened on the top of the frame body 111, and an inner surrounding pad 114 is installed around the inner cavity wall of the first mounting frame 113.

[0029] In Embodiment 5, the insert sheet 112 is inserted transversely into the gap between the cylinder 211 and the base 214, and the upper end surface of the insert sheet 112 is fitted to the bottom end surface of the feed filter ball 212. When the humidity of the collected soil sample is high, the soil sample cannot completely pass through the feed filter ball 212, and because the insert sheet 112 inserted transversely into the gap between the cylinder 211 and the base 214 can preliminarily receive and collect the soil sample that is still being filtered and collected, the soil that has not passed through the feed filter ball 212 will be received by the upper end surface of the insert sheet 112, ensuring the effective processing of high-humidity soil samples, ensuring that the soil samples can be effectively collected and retained, avoiding the loss or leakage of soil samples, and effectively processing the soil samples that have not passed, improving the efficiency and integrity of the soil sampling process, and ensuring that the collected soil samples are representative and reliable.

[0030] Embodiment 6, the convergence mechanism 13 includes a supporting cross frame 131 and a fan blade 132 installed on the lower end surface of the two groups of supporting cross frames 131, the other end of the fan blade 132 is connected to the side end surface of the mounting frame 133, and one end of the inner cavity wall of the two side end surfaces of the supporting cross frame 131 is attached to the two sides of the outer end wall of the second mounting frame 12. When the interval between the cylinder 211 and the base 214 is replaced by a snap-fit ​​structure in which the matching groove 213 and the matching mounting block 215 cooperate, the connection between the collection cylinder 21 and the auxiliary frame 24 is improved, so that the feed filter ball 212 can better collect soil, and the operator can The liquid for soaking the soil is poured into the converging mechanism 13 from above the fan blade 132. The liquid for soaking the soil passes through the middle of the mounting frame 133 through the inwardly inclined arc formed by the fan blade 132, and the liquid is gathered within the operating range of the entire device. With the aid of the inclined arc and structure in the design, the liquid can pass through and be evenly distributed within the entire device, ensuring that the liquid can evenly soak the soil sample, improving the accuracy of the experiment or test, and enabling the liquid to be gathered within the operating range of the entire device, effectively avoiding liquid overflow or waste, and ensuring that the liquid is controlled and utilized within the required range.

[0031] To sum up: a sampling device for soil pollution prevention and control, including an outer support frame 1 and a collection unit 2, the inner cavity of the outer support frame 1 is interspersed with the collection unit 2, the collection unit 2 includes a collection tube 21 and a placement plate 22 installed on the top of the collection tube 21, the two groups of placement plates 22 are connected in series through an adsorption mechanism 23, and an auxiliary frame 24 is vertically interspersed on the lower end surface of the adsorption mechanism 23. The whole device is placed horizontally just above the soil to be sampled, so that the bottom of the collection tube 21 is directly aligned with the top of the sampled soil, and after passing through the connecting hole 216, the feed filter ball 212 is in direct contact with the soil, and the collected soil penetrates and is adsorbed into the inner cavity of the cylinder 211.

[0032] The matching mounting block 215 is inserted upward into the inner cavity of the matching groove 213, so that the cylinder 211 and the base 214 fit each other. While the two are connected and fit each other, the insertion piece 112 is horizontally inserted into the gap between the cylinder 211 and the base 214. The outer end of the insertion piece 112 can block the gap between the cylinder 211 and the base 214, which can not only avoid leakage and loss of soil samples during the sampling process, but also ensure the integrity and reliability of the collected soil samples.

[0033] When the collected soil sample has a high humidity, the soil sample cannot completely pass through the feed filter ball 212, and because the insertion sheet 112 laterally inserted into the gap between the cylinder 211 and the base 214 can preliminarily receive and collect the soil sample that is still being filtered and collected, the soil that has not passed through the feed filter ball 212 will be received by the upper end surface of the insertion sheet 112, ensuring the effective processing of high-humidity soil samples, ensuring that the soil samples can be effectively collected and retained, avoiding the loss or leakage of soil samples, and effectively processing the soil samples that have not passed, improving the efficiency and integrity of the soil sampling process, and ensuring that the collected soil samples are representative and reliable.

[0034] However, when the humidity of the collected soil sample is low, the collected soil is in the form of larger particles, which can directly contact the surface of the collected soil through the bottom of the frame block 241, and adsorb the soil particle samples to be collected through the adsorption tube 236 that passes through the inner cavity of the first discharge hole 243 and the second discharge hole 245. The operator can insert the activated carbon ring into the inner cavity of the annular groove 244 in advance. When the adsorption tube 236 collects soil particles upward, the organic matter in the soil will be adsorbed by the activated carbon ring and enter the gap between the first discharge hole 243 and the adsorption tube 236. The activated carbon can adsorb the organic matter in the soil, improve the analysis effect and accuracy of the organic matter in the soil sample, help protect the organic matter in the soil sample, reduce the pollution and volatilization of the organic matter, and maintain the originality and purification effect of the soil sample.

[0035] When the pollution degree of the collected soil is low, in order to avoid the mixing of external pollutants, the inner cavity of the vertical groove 246 arranged in the circular array in the second discharge hole 245 is vertically connected to the external air inlet pipe, and the other end of the air inlet pipe is connected to the fan. Multiple groups of air inlet pipes form a surrounding jet airflow at the bottom of the second discharge hole 245. The surrounding jet airflow continuously blows vertically downward toward the collected soil with a low pollution degree. Through the continuous injection of airflow, impurities on the surface of the collected soil are cleaned, and pollutants in the external environment are effectively prevented from mixing into the soil sample, ensuring the accuracy and reliability of the collected soil sample. By continuously injecting airflow, impurities and pollutants on the soil surface can be continuously cleaned, the purity of the soil sample is improved, and a clean soil sample is provided for subsequent analysis and detection. While cleaning impurities and pollutants, the adsorption tube 236 in the inner cavity of the second discharge hole 245 adsorbs the collected soil sample upward.

[0036] The soil sample collected by upward adsorption will pass through the gap of the placement tray 22, so that the soil sample will be retained on the upper end surface of the placement tray 22. The inner end surface of the first mounting frame 113 and the second mounting frame 12 are arranged to surround and protect the outer end surface of the placement tray 22 to prevent the soil sample collected by upward adsorption from falling out of the device.

[0037] When the interval between the cylinder 211 and the base 214 is replaced by a snap-fit ​​structure in which the matching groove 213 and the matching mounting block 215 cooperate, the tightness of the connection between the collection cylinder 21 and the auxiliary frame 24 is improved, so that the feed filter ball 212 can better collect the soil, and the operator can pour the liquid used to soak the soil from above the fan blade 132 into the convergence mechanism 13. Through the inward inclined arc opened by the fan blade 132, the liquid for soaking the soil passes through the middle of the mounting frame 133, and the liquid is gathered within the operating range of the entire device. With the help of the inclined arc and structure in the design, the liquid can pass through and be evenly distributed within the entire device, ensuring that the liquid can evenly soak the soil sample, improving the accuracy of the experiment or test, and allowing the liquid to gather within the operating range of the entire device, effectively avoiding liquid overflow or waste, and ensuring that the liquid is controlled and utilized within the required range.

[0038] The above is the entire working principle of the present invention.

[0039] In the present invention, the installation method, connection method or setting method of all the components mentioned above are common mechanical methods, and the specific structures, models and coefficient indicators of all its components are its own technology. As long as it can achieve its beneficial effects, it can be implemented, so it will not be elaborated.

[0040] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A sampling device for soil pollution prevention and control, comprising an outer support frame (1) and a collection unit (2), wherein the inner cavity of the outer support frame (1) is interspersed with the collection unit (2), characterized in that: The collection unit (2) comprises a collection tube (21) and a storage tray (22) mounted on the top of the collection tube (21); the two sets of storage trays (22) are connected in series via an adsorption mechanism (23); and an auxiliary frame (24) is vertically inserted through the lower end surface of the adsorption mechanism (23).

2. A soil pollution prevention and control sampling device according to claim 1, characterized in that: The collecting cylinder (21) comprises a cylinder body (211) and an inlet filter ball (212) disposed at a middle position at the bottom of the cylinder body (211); matching grooves (213) are disposed in an annular array at the bottom of the cylinder body (211); a base (214) is disposed on the lower end surface of the cylinder body (211); matching mounting blocks (215) are disposed in an annular array on the upper end surface of the base (214); a communicating hole (216) is disposed in the middle of the matching mounting block (215); the matching mounting block (215) is inserted into the inner cavity of the matching groove (213), so that the cylinder body (211) and the base (214) are combined into a whole; and the inlet filter ball (212) passes through the inner cavity wall of the communicating hole (216).

3. A soil pollution prevention and control sampling device according to claim 1, characterized in that: The adsorption mechanism (23) comprises a third mounting frame (231) and a material passing inner cylinder (232) opened in the middle of the third mounting frame (231); wrapping frames (233) are vertically arranged at both ends of the lower surface of the third mounting frame (231); bending frames (234) are arranged on both sides of the wrapping frame (233); the bending frames (234) are connected in series via a series connection frame (235); and adsorption tubes (236) are vertically arranged on the lower end surface of the third mounting frame (231).

4. A soil pollution prevention and control sampling device according to claim 1, characterized in that: The auxiliary frame (24) comprises a frame block (241) and an outer groove (242) formed on a side end surface of the frame block (241); a first discharge hole (243) is formed in the middle of the frame block (241); annular grooves (244) are arranged in an inner cavity wall of the first discharge hole (243); second discharge holes (245) are vertically arranged on both sides of the first discharge hole (243); and vertical grooves (246) are formed in an annular array in the inner cavity wall of the second discharge hole (245).

5. A soil pollution prevention and control sampling device according to claim 4, characterized in that: The side end surface of the outer groove (242) is fitted to the outer end walls of the cylinder body (211) and the base (214), so that the collection cylinder (21) and the auxiliary frame (24) become a whole.

6. A soil pollution prevention and control sampling device according to claim 3, characterized in that: The adsorption tube (236) is vertically inserted into the inner cavities of the first discharge hole (243) and the second discharge hole (245); the inner cavity walls of the first discharge hole (243) and the second discharge hole (245) have the same diameter.

7. A soil pollution prevention and control sampling device according to claim 1, characterized in that: The outer support frame (1) comprises an assembly frame (11) and a second mounting frame (12) mounted on a side end surface of the assembly frame (11), and convergence mechanisms (13) are interspersed at both ends of the second mounting frame (12).

8. A soil pollution prevention and control sampling device according to claim 7, characterized in that: The assembly bracket (11) comprises a frame body (111) and an insertion piece (112) transversely mounted on an inner end wall of the frame body (111); a first mounting frame (113) is transversely provided on the top of the frame body (111); an inner surrounding pad (114) is mounted around an inner cavity wall of the first mounting frame (113).

9. A soil pollution prevention and control sampling device according to claim 8, characterized in that: The insertion sheet (112) is inserted transversely into the gap between the cylinder (211) and the base (214), and the upper end surface of the insertion sheet (112) is in contact with the bottom end surface of the inlet filter ball (212).

10. A soil pollution prevention and control sampling device according to claim 7, characterized in that: The convergence mechanism (13) comprises a supporting cross frame (131) and a fan blade (132) mounted on the lower end surfaces of two groups of supporting cross frames (131); the other end of the fan blade (132) is connected to the side end surface of the mounting frame (133); one end of the inner cavity wall of the two side end surfaces of the supporting cross frame (131) is attached to the two sides of the outer end wall of the second mounting frame (12).

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