A sampling device for treating polluted soil

Abstract

The present invention relates to the technical field of sampling devices, and specifically discloses a sampling device for treating contaminated soil, which includes a mounting ring, a multi-stage guiding and vibrating unit respectively arranged on the upper and lower sides of the mounting ring, and a side-piercing tripod unit. The multi-stage guiding and vibrating unit includes a multi-stage guiding component and a vibrating component arranged on the multi-stage guiding component. The side-piercing tripod unit includes a tripod component and a soil-piercing component for fixing the tripod component. In this application, a counterweight block that can be automatically unlocked is provided to naturally fall under the action of gravity, providing a stable downward pressure to the vibrating component. Thus, it is not necessary for the staff to manually apply downward pressure during the sampling process, reducing the labor intensity of the staff. Moreover, the continuous falling of the counterweight block ensures that the sampling tube is always subjected to a uniform downward pressure during the process of entering the soil, which is more stable than the downward pressure applied by the staff, thereby improving the success rate and quality of sampling.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling devices, and more specifically, it relates to a sampling device for treating contaminated soil. Background Art

[0002] The treatment of contaminated soil refers to taking various measures to reduce or eliminate pollutants in the soil in order to restore the ecological function and use value of the soil. At present, the contaminated soil treatment technologies can be divided into four categories: physical remediation, chemical remediation, bioremediation, and phytoremediation. In actual applications, it is necessary to comprehensively select according to factors such as pollution type, pollution degree, and soil properties. Sampling of contaminated soil is a crucial part of the environmental remediation process, which provides a scientific basis for subsequent pollution assessment, treatment plan design, and effect verification.

[0003] A soil sampling drill is a device used to collect samples from contaminated soil, usually including a manual sampling drill, an electric sampling drill, and a vibrating sampling drill, etc. The manual sampling drill is simple to operate and is suitable for shallow soil; the electric sampling drill is driven by a motor and is suitable for deep soil; the vibrating sampling drill combines a vibrating function and is suitable for hard soil and clay to improve the penetration ability.

[0004] Currently, when the vibrating sampling drill is actually sampling, the operator holds two handles on the sampling drill, keeps the sampling drill vertical and close to the ground, then starts the vibrating motor, and at the same time the operator presses down on the sampling drill to provide a downward pressure for drilling, and cooperates with the vibration for sampling. However, this sampling method still has certain defects: 1. When the operator presses down on the sampling drill to provide a downward pressure for drilling, it not only cannot ensure the stability and uniformity of the downward pressure, resulting in the sampling drill tilting or deviating in the soil, affecting the quality and accuracy of sampling, but also the sampling drill will generate a counter-vibration force during vibrating sampling, and long-term vibrating sampling will cause fatigue to the operator.

[0005] 2. The sampling drill lacks guidance during the sampling process. Without guidance, the sampling drill is more likely to tilt in the soil, affecting the verticality and stability of sampling. Especially when sampling hard soil or clay, the sampling drill is more likely to deviate from the predetermined sampling path.

[0006] 3. When sampling shallow soil, the operator can manually control to keep the sampling drill stable. However, as the depth of the sampling drill inserted into the soil increases, the resistance of the soil gradually increases, and the sampling drill is more likely to shake, resulting in tilting or deviation, affecting the sampling stability and quality. Summary of the Invention

[0007] The present invention provides a sampling device for treating contaminated soil, which solves the technical problems in the prior art that the operator pressing down on the sampling drill to provide a downward pressure for drilling cannot ensure the stability of the downward pressure and the sampling drill lacks guidance during the sampling process.

[0008] The present invention provides a sampling device for treating polluted soil, which includes a mounting ring, a multi-stage guiding and vibrating unit respectively arranged on the upper and lower sides of the mounting ring, and a side-stabbing tripod unit. The multi-stage guiding and vibrating unit includes a multi-stage guiding component and a vibrating component arranged on the multi-stage guiding component. The side-stabbing tripod unit includes a tripod component and a soil-stabbing component for fixing the tripod component. A self-unlocking counterweight unit is arranged on the multi-stage guiding and vibrating unit. The self-unlocking counterweight unit includes a counterweight component for providing a downward pressure to the vibrating component, a control component for cooperating with the tripod component to fix and unlock the counterweight component, and a pulling component for pulling the control component.

[0009] The multi-stage guiding component includes a plurality of fixing plates fixedly installed on the inner wall of the mounting ring and distributed in a circumferential manner. Guide chutes are opened on the adjacent sides of the plurality of fixing plates. The counterweight component includes a second guide slider slidably connected in the guide chute. A counterweight block is commonly installed among the plurality of second guide sliders.

[0010] During sampling, the vibrating component is perpendicular to the ground and the tripod component is unfolded. When unfolding, the tripod component will drive the pulling component to pull the control component to unlock the counterweight block, so that the vibrating component falls to the ground and at the same time the soil-stabbing component stabs into the soil to fix the tripod. Then, when the vibrating component vibrates, the counterweight block presses down the vibrating component to insert into the soil for sampling, and the soil-stabbing component vibrates with the vibrating component and stabs deeper.

[0011] Further, the multi-stage guiding component further includes a first guide slider slidably connected in the guide chute. A mounting plate is commonly installed among the plurality of first guide sliders. A plurality of fixing rods distributed in a circumferential manner are fixedly installed on the inner side of the mounting ring. A guide sleeve is commonly installed among the plurality of fixing rods.

[0012] Further, the vibrating component includes a vibrating motor fixedly installed on the top of the mounting plate. The top of the vibrating motor is fixedly connected to the counterweight block. A sampling tube fixedly penetrating through the mounting plate is fixedly installed at the bottom of the vibrating motor. The guide sleeve is slidably sleeved on the outer side of the sampling tube.

[0013] Further, the tripod component includes three support rods hinged on the outer side of the mounting ring and distributed in a circumferential manner. A sliding sleeve is slidably sleeved on the outer side of the sampling tube. A first connecting rod and a second connecting rod are respectively hinged on the adjacent sides of the support rod and the sliding sleeve. The first connecting rod and the second connecting rod are hinged to each other. A spring telescopic rod is hinged to the bottom of the fixing plate. The spring telescopic rod is hinged to the second connecting rod. And when the support rod is in the unfolded state, the hinge point of the spring telescopic rod and the second connecting rod is farther away from the sampling tube than the hinge point of the first connecting rod and the second connecting rod.

[0014] Further, the soil piercing assembly includes a mounting sleeve hinged to the bottom end of the support rod and a mounting rod fixedly installed inside the mounting sleeve. A horizontal support plate for contacting the ground to make the sampling tube perpendicular to the ground is fixedly installed at the bottom end of the mounting rod. A plurality of vertical pointed feet are fixedly installed at the bottom of the horizontal support plate. An inclined pointed foot is fixedly installed on the side of the vertical pointed foot away from the mounting ring, and the tip of the inclined pointed foot is inclined upward.

[0015] Further, the control assembly includes a return spring fixedly installed on the side of the fixed plate away from the counterweight and a return plate fixedly installed at the other end of the return spring.

[0016] Further, a slot is provided on the side of the guiding slider two close to the fixed plate. A plug rod that slidably penetrates the fixed plate and cooperates with the slot is fixedly installed on the side of the return plate close to the counterweight.

[0017] Further, the pulling assembly includes an L-shaped mounting frame fixedly installed on the side of the fixed plate away from the counterweight. Two fixed pulleys are rotatably installed on the mounting frame. One of the fixed pulleys is located on the right side of the return plate, and the other fixed pulley is located below the return plate. A pulling rope is wound around the outside of the two fixed pulleys.

[0018] Further, an annular groove is provided at the hinge between the support rod and the mounting ring. The top end of the pulling rope is fixedly connected to the return plate. The bottom end of the pulling rope bypasses the hinge shaft of the support rod and the mounting ring and is fixedly installed in the annular groove. When the support rod unfolds, it will stretch the pulling rope downward.

[0019] Further, a cylinder is fixedly installed at the bottom of the mounting ring through a bottom plate. An ear plate fixedly connected to the output end of the cylinder is fixedly installed on the outside of the sliding sleeve.

[0020] The beneficial effects of the present invention are as follows: 1. In this application, by setting a counterweight that can be automatically unlocked, it naturally falls under the action of gravity, providing a stable downward pressure to the vibration sampling assembly. Thus, it is not necessary for the staff to manually apply downward pressure during the sampling process, reducing the labor intensity of the staff. And the continuous falling of the counterweight ensures that the sampling tube always receives a uniform downward pressure during the process of entering the soil, which is more stable than the downward pressure applied by the staff, thereby improving the success rate and quality of sampling.

[0021] 2. During the vibration sampling process of this application, the bottom end of the support rod will gradually rotate slightly outward with the vibration, thus squeezing the inclined pointed feet outward, causing the inclined pointed feet to receive an outward squeezing force in the horizontal direction and further penetrate into the soil, increasing the contact area and friction with the soil. Then, as the vibration sampling progresses, the support of the tripod assembly will become more stable, greatly improving the stability of the entire vibration sampling process.

[0022] 3. By utilizing the force generated by the rotation and expansion of the support rod to drive the pull rope, which in turn pulls the reset plate and drives the insertion rod to disengage from the slot, the present application realizes the automatic unlocking of the counterweight assembly. This not only improves the sampling efficiency but also enhances the automation level of the self-unlocking counterweight unit.

[0023] 4. During the sampling process, the present application guides the pair of counterweight blocks vertically through the guiding slider one, guides the vibration motor vertically through the guiding slider two, and guides the sampling tube vertically through the guiding sleeve and the sliding sleeve. Thus, a multi-level vertical guiding reinforcement is formed, enabling the counterweight blocks, the vibration motor, and the sampling tube to all move downward stably in a vertical state. This can ensure that the path of the sampling tube in the soil is a straight line, avoiding the problem of sampling failure caused by path deviation due to inclined insertion, and thereby significantly improving the sampling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0025] Figure 2 is a three-dimensional structural schematic diagram of the mounting ring, fixing plate, pull rope, support rod, cylinder, and vibration motor parts of the present invention.

[0026] Figure 3 is the present invention Figure 2 partial enlarged view of part A in.

[0027] Figure 4 is a three-dimensional structural schematic diagram of the fixed rod, guiding sleeve, connecting rod one, connecting rod two, and spring telescopic rod parts of the present invention.

[0028] Figure 5 is a three-dimensional structural schematic diagram of the pull rope, annular groove, support rod, sliding sleeve, ear plate, and horizontal support plate parts of the present invention.

[0029] In the figure: 1, mounting ring; 2, side-stabbing tripod unit; 201, tripod assembly; 202, soil-stabbing assembly; 2011, support rod; 2012, first connecting rod; 2013, second connecting rod; 2014, spring telescopic rod; 2015, sliding sleeve; 2021, mounting sleeve; 2022, mounting rod; 2023, horizontal support plate; 2024, vertical pointed foot; 2025, inclined pointed foot; 3, cylinder; 4, multi-stage guiding and vibrating sampling unit; 5, self-unlocking counterweight unit; 6, bottom plate; 7, ear plate; 401, multi-stage guiding assembly; 402, vibrating sampling assembly; 4011, fixing plate; 4012, guiding chute; 4013, first guiding slider; 4014, mounting plate; 4015, fixing rod; 4016, guiding sleeve; 4021, vibrating motor; 4022, sampling tube; 501, counterweight assembly; 502, control assembly; 503, pulling assembly; 5011, second guiding slider; 5012, counterweight block; 5021, return spring; 5022, return plate; 5023, inserting rod; 5024, inserting slot; 5031, mounting frame; 5032, fixed pulley; 5033, pulling rope; 5034, annular groove. Detailed implementation manners

[0030] Now, the subject matter described herein will be discussed with reference to exemplary implementation manners. It should be understood that these implementation manners are discussed so that those skilled in the art can better understand and thus implement the subject matter described herein. Changes can be made to the functions and arrangements of the elements discussed without departing from the scope of protection of the content of this specification. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0031] Refer to Figure 1 and Figure 2 In this embodiment, a sampling device for treating polluted soil is proposed, which includes a mounting ring 1, a multi-stage guiding and vibrating sampling unit 4 and a side-stabbing tripod unit 2 respectively arranged on the upper and lower sides of the mounting ring 1. The multi-stage guiding and vibrating sampling unit 4 includes a multi-stage guiding assembly 401 and a vibrating sampling assembly 402 arranged on the multi-stage guiding assembly 401. The side-stabbing tripod unit 2 includes a tripod assembly 201 and a soil-stabbing assembly 202 for fixing the tripod assembly 201. A self-unlocking counterweight unit 5 is arranged on the multi-stage guiding and vibrating sampling unit 4. The self-unlocking counterweight unit 5 includes a counterweight assembly 501 for providing a downward pressure to the vibrating sampling assembly 402, a control assembly 502, and a pulling assembly 503 for pulling and controlling the control assembly 502. The control assembly 502 is used to cooperate with the tripod assembly 201 to fix and unlock the counterweight assembly 501. The multi-stage guiding assembly 401 includes a plurality of fixing plates 4011 fixedly installed on the inner wall of the mounting ring 1 and distributed in a circumferential manner. The vibrating sampling assembly 402 includes a sampling tube 4022.

[0032] Refer toFigure 1 , Figure 4 and Figure 5 , the tripod assembly 201 includes three support rods 2011 that are hinged to the outside of the mounting ring 1 and are circumferentially distributed. A sliding sleeve 2015 is slidably sleeved on the outside of the sampling tube 4022. One end of a first link 2012 and one end of a second link 2013 are respectively hinged to the sides of the support rod 2011 and the sliding sleeve 2015 that are close to each other. The first link 2012 and the second link 2013 are hinged to each other. A spring telescopic rod 2014 is hinged to the bottom of the fixing plate 4011. The spring telescopic rod 2014 is hinged to the second link 2013. When the support rod 2011 is in the unfolded state, the hinge point of the spring telescopic rod 2014 and the second link 2013 is farther from the sampling tube 4022 than the hinge point of the first link 2012 and the second link 2013.

[0033] Refer to Figure 1 , Figure 4 and Figure 5 , the soil piercing assembly 202 includes a mounting sleeve 2021 hinged to the bottom end of the support rod 2011 and a mounting rod 2022 fixedly installed in the mounting sleeve 2021. A horizontal support plate 2023 for contacting the ground to make the sampling tube 4022 perpendicular to the ground is fixedly installed at the bottom end of the mounting rod 2022. A plurality of vertical pointed feet 2024 are fixedly installed at the bottom of the horizontal support plate 2023. An inclined pointed foot 2025 is fixedly installed on the side of the vertical pointed foot 2024 away from the mounting ring 1, and the tip of the inclined pointed foot 2025 is inclined upward.

[0034] Refer to Figure 1 and Figure 4 , a cylinder 3 is fixedly installed at the bottom of the mounting ring 1 through a bottom plate 6. An ear plate 7 fixedly connected to the output end of the cylinder 3 is fixedly installed on the outside of the sliding sleeve 2015.

[0035] During specific use, the operator holds the fixing plate 4011, makes the vibration extraction assembly 402 perpendicular to the ground, and then starts the cylinder 3. The output end of the cylinder 3 contracts, driving the ear plate 7 to move upward, thereby driving the sliding sleeve 2015 to slide upward, and then driving the top end of the second link 2013 to upwardly squeeze the hinge point between it and the spring telescopic rod 2014, thereby driving the spring telescopic rod 2014 to rotate toward the side close to the support rod 2011 and gradually extend, pushing the second link 2013 to rotate downward, and further causing the second link 2013 to squeeze the hinge point between it and the first link 2012, driving the first link 2012 to push the support rod 2011 to rotate outward and unfold, and thus the entire tripod assembly 201 unfolds. At the same time, during the unfolding process of the entire tripod assembly 201, the pulling assembly 503 also pulls the control assembly 502 to unlock the counterweight assembly 501. Then, the counterweight assembly 501 slides downward under the action of gravity and downwardly squeezes the vibration extraction assembly 402, driving the vibration extraction assembly 402 to vertically fall on the ground under the guidance of the multi-stage guiding assembly 401.

[0036] Then the staff presses down the three horizontal support plates 2023 and inserts the vertical pointed feet 2024 and the inclined pointed feet 2025 into the soil of the groove. During the insertion process, the inclined pointed feet 2025 will form a wedge effect when entering the soil, so that the soil is pushed away, thereby reducing the resistance required for insertion, so that the vertical pointed feet 2024 and the inclined pointed feet 2025 can smoothly penetrate the soil, thereby achieving the fixation of the vibration component 402. The horizontal support plates 2023 are supported on the ground, which increases the contact area between the tripod component 201 and the ground, so that the pressure of the support rod 2011 on the ground is more evenly dispersed, reducing the situation of excessive local pressure, avoiding the sinking or sliding of the support point, causing the vibration to tilt during the vertical downward sampling process, and improving the sampling stability. At the same time, after the inclined pointed feet 2025 are inserted into the soil, lateral resistance is formed to resist the action of external lateral forces, thereby effectively preventing the lateral movement of the tripod component 201.

[0037] Then, the vibration component 402 is inserted into the soil for sampling, and as the vibration component 402 continues to vibrate downward to sample, a downward pressure is applied to the mounting ring 1 and transmitted to the support rod 2011. When the support rod 2011 is subjected to the downward pressure, it rotates with its hinge point with the mounting ring 1 as the fulcrum (because the vertical pointed foot 2024 and the inclined pointed foot 2025 have been inserted into the soil, and the horizontal support plate 2023 is in contact with the ground, so the support rod 2011 is only subjected to a slight rotation at this time), causing the bottom end of the support rod 2011 to rotate slightly outward, thereby squeezing the inclined pointed foot 2025 outward, causing the inclined pointed foot 2025 to rotate slightly outward. The pointed feet 2025 are subjected to outward squeezing force in the horizontal direction (it should be noted that: because the rotation range of the support rod 2011 is very limited, the rotation angle is very small, and the soil will exert friction and resistance on the vertical pointed feet 2024, so the actual activity space of the vertical pointed feet 2024 will not be significantly increased), and further penetrate into the soil, increasing the contact area and friction with the soil. Then, as the vibration sampling proceeds, the support of the tripod assembly 201 will become more and more stable, greatly improving the stability of the entire vibration sampling process, until the vibration sampling assembly 402 is inserted into the soil to the required sampling depth and the sampling is completed.

[0038] See Figure 2 and Figure 3 A guide groove 4012 is provided on a side close to several fixed plates 4011, and the counterweight assembly 501 includes a second guide slider 5011 slidably connected to the guide groove 4012, and a counterweight block 5012 is installed between several second guide sliders 5011.

[0039] See Figure 2 and Figure 3The control component 502 includes a reset spring 5021 fixedly installed on the side of the fixed plate 4011 away from the counterweight block 5012 and a reset plate 5022 fixedly installed on the other end of the reset spring 5021. A slot 5024 is provided on the side of the guide slider 5011 close to the fixed plate 4011, and an insertion rod 5023 is fixedly installed on the side of the reset plate 5022 close to the counterweight block 5012, which slides through the fixed plate 4011 and cooperates with the slot 5024.

[0040] See Figure 2 、 Figure 3 and Figure 5 The pulling assembly 503 includes an L-shaped mounting frame 5031 fixedly mounted on the side of the fixed plate 4011 away from the counterweight block 5012, and two fixed pulleys 5032 are rotatably mounted on the mounting frame 5031, one of the fixed pulleys 5032 is located on the side of the reset plate 5022 away from the fixed plate 4011, and the other fixed pulley 5032 is located below the reset plate 5022. A pull rope 5033 is wrapped around the outer sides of the two fixed pulleys 5032, and an annular groove 5034 is provided at the hinge between the support rod 2011 and the mounting ring 1. The top end of the pull rope 5033 is fixedly connected to the reset plate 5022, and the bottom end of the pull rope 5033 is fixedly mounted in the annular groove 5034 after passing around the hinge axis of the support rod 2011 and the mounting ring 1. When the support rod 2011 is unfolded, the pull rope 5033 will be pulled downward.

[0041] When in use, during the overall unfolding of the tripod assembly 201, the support rod 2011 rotates outwards around the hinge axis with the mounting ring 1, which will simultaneously pull the pull rope 5033 downwards. At the same time, the downward pulling force will be converted into horizontal pulling force under the action of the two fixed pulleys 5032, thereby pulling the reset plate 5022 to drive the insertion rod 5023 to move away from the fixed plate 4011 and stretch the reset spring 5021, thereby driving the insertion rod 5023 to disengage from the slot 5024, thereby unlocking the guide slider 2 5011 and the counterweight block 5012. The force generated by the rotation and expansion of the support rod 2011 drives the pull rope 5033 to pull the reset plate 5022, causing the insertion rod 5023 to disengage from the slot 5024, thereby realizing the automatic unlocking of the counterweight assembly 501, thereby improving the sampling efficiency while improving the degree of automation of the self-unlocking counterweight unit 5. Then, under the action of gravity, the counterweight block 5012 drives the guide slider 2 5011 to slide vertically downward along the guide slot 4012. The downward sliding of the counterweight block 5012 will squeeze the shock-taking assembly 402 downward, driving the shock-taking assembly 402 to fall vertically to the ground under the guidance of the multi-stage guide assembly 401.

[0042] See Figure 1 、 Figure 2 and Figure 4, the multi-stage guiding assembly 401 further includes a first guiding slider 4013 slidably connected in the guiding chute 4012. An installation plate 4014 is commonly installed among several first guiding sliders 4013. A plurality of fixing rods 4015 distributed circumferentially are fixedly installed inside the installation ring 1. A guiding sleeve 4016 is commonly installed among several fixing rods 4015. It should be noted that in order to reduce friction, ball bearings are embedded on both the first guiding slider 4013 and the second guiding slider 5011. The first guiding slider 4013 and the second guiding slider 5011 both perform rolling friction with the guiding chute 4012 through the ball bearings.

[0043] Refer to Figure 1 , Figure 2 and Figure 4 , the vibrating and sampling assembly 402 further includes a vibrating motor 4021 fixedly installed on the top of the installation plate 4014. The top of the vibrating motor 4021 is fixedly connected to a counterweight 5012. A sampling tube 4022 is fixedly installed at the bottom of the vibrating motor 4021 and fixedly penetrates through the installation plate 4014. The guiding sleeve 4016 is slidably sleeved on the outside of the sampling tube 4022.

[0044] During specific use, after inserting the vertical pointed foot 2024 and the inclined pointed foot 2025 into the soil, the staff starts the vibrating motor 4021. The unbalanced rotor inside the vibrating motor 4021 starts to rotate, generating high-frequency vibrations in the vertical direction and transmitting them to the sampling tube 4022 through the installation plate 4014, causing the sampling tube 4022 to generate high-frequency up and down vibrations in the vertical direction. Under the action of gravity, the counterweight 5012 exerts a stable downward pressure on the vibrating motor 4021 and the sampling tube 4022 through the installation plate 4014. Under the combined action of the downward pressure and vibration assistance, the sampling tube 4022 continuously moves downward and inserts into the soil. During this process, the first guiding slider 4013 slides vertically downward along the guiding chute 4012 to guide the counterweight 5012 in the vertical direction. The second guiding slider 5011 guides the vibrating motor 4021 in the vertical direction. The guiding sleeve 4016 and the sliding sleeve 2015 guide the sampling tube 4022 in the vertical direction, thereby forming multi-stage vertical guiding and reinforcement. The counterweight 5012, the vibrating motor 4021, and the sampling tube 4022 can all stably move downward in a vertical state, so as to ensure that the path of the sampling tube 4022 in the soil is a straight line, avoiding the problem of sampling failure caused by path deviation due to inclined insertion, and thus greatly improving the sampling accuracy. Until the sampling tube 4022 is inserted into the soil to the required sampling depth, the sampling is completed.

[0045] After sampling is completed, the staff holds the counterweight 5012 by hand and pulls the counterweight 5012 upward, thereby driving the vibration motor 4021 and the sampling tube 4022 to move upward, pulling the sampling tube 4022 out of the soil and driving the second guiding slider 5011 to move to the top end of the guiding chute 4012 through the counterweight 5012. Then, the vertical pointed foot 2024 and the inclined pointed foot 2025 are pulled out of the soil. Then, the output end of the cylinder 3 pushes the ear plate 7 downward, thereby driving the sliding sleeve 2015 to move downward, and further driving the hinge point of the second connecting rod 2013 and the sliding sleeve 2015 to move downward, causing the spring telescopic rod 2014 to rotate and contract away from the support rod 2011, so that the support rod 2011 rotates toward the sampling tube 4022, and then the tripod assembly 201 is retracted. During the rotation of the support rod 2011 toward the sampling tube 4022, the tension received by the return spring 5021 gradually decreases, so it contracts and resets, and then drives the insertion rod 5023 to reinsert into the slot 5024 through the return plate 5022 to fix the counterweight 5012.

[0046] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. The obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A sampling device for treating polluted soil, characterized in that, Including: An installation ring, a multi-stage guiding and vibrating sampling unit and a side-piercing tripod unit respectively arranged on the upper and lower sides of the installation ring. The multi-stage guiding and vibrating sampling unit includes a multi-stage guiding assembly and a vibrating sampling assembly arranged on the multi-stage guiding assembly. The side-piercing tripod unit includes a tripod assembly and a soil-piercing assembly for fixing the tripod assembly. A self-unlocking counterweight unit is arranged on the multi-stage guiding and vibrating sampling unit. The self-unlocking counterweight unit includes a counterweight assembly for providing a downward pressure to the vibrating sampling assembly, a control assembly for cooperating with the tripod assembly to fix and unlock the counterweight assembly, and a pulling assembly for pulling the control assembly; The multi-stage guiding assembly includes a plurality of fixing plates fixedly installed on the inner wall of the installation ring and distributed in a circumferential manner. A guiding chute is opened on one side of each of the plurality of fixing plates close to each other. The counterweight assembly includes a guiding slider two slidably connected in the guiding chute. A counterweight block is jointly installed among the plurality of guiding sliders two; The multi-stage guiding assembly further includes a guiding slider one slidably connected in the guiding chute. An installation plate is jointly installed among the plurality of guiding sliders one. A plurality of fixing rods distributed in a circumferential manner are fixedly installed on the inner side of the installation ring. A guiding sleeve is jointly installed among the plurality of fixing rods; The vibrating sampling assembly includes a vibrating motor fixedly installed on the top of the installation plate. The top of the vibrating motor is fixedly connected with the counterweight block. The unbalanced rotor inside the vibrating motor rotates to generate high-frequency vibration in the vertical direction; During sampling, the vibrating sampling assembly is perpendicular to the ground and the tripod assembly is unfolded. When unfolding, the tripod assembly will drive the pulling assembly to pull the control assembly to unlock the counterweight block, so that the vibrating sampling assembly falls to the ground and at the same time the soil-piercing assembly pierces into the soil to fix the tripod. Then when the vibrating sampling assembly vibrates, the counterweight block presses down the vibrating sampling assembly to insert into the soil for sampling, and the soil-piercing assembly vibrates with the vibrating sampling assembly and pierces deeper; 2. The soil pollution treatment sampling device according to claim 1, characterized in that, The bottom of the vibrating motor is fixedly installed with a sampling tube fixedly penetrating the installation plate. The guiding sleeve is slidably sleeved on the outside of the sampling tube; 3. The soil pollution treatment sampling device according to claim 2, characterized in that, The tripod assembly includes three support rods hinged on the outside of the installation ring and distributed in a circumferential manner. A sliding sleeve is slidably sleeved on the outside of the sampling tube. A connecting rod one and a connecting rod two are respectively hinged on one side of the support rod and the sliding sleeve close to each other. The connecting rod one and the connecting rod two are hinged to each other. The bottom of the fixing plate is hinged with a spring telescopic rod. The spring telescopic rod is hinged with the connecting rod two, and the hinge point of the spring telescopic rod and the connecting rod two is farther away from the sampling tube than the hinge point of the connecting rod one and the connecting rod two when the support rod is in the unfolded state; 4. The soil pollution treatment sampling device according to claim 1, characterized in that, The soil-piercing assembly includes an installation sleeve hinged at the bottom end of the support rod and an installation rod fixedly installed in the installation sleeve. The bottom end of the installation rod is fixedly installed with a horizontal support plate for contacting the ground to make the sampling tube perpendicular to the ground. A plurality of vertical pointed feet are fixedly installed at the bottom of the horizontal support plate. An inclined pointed foot is fixedly installed on one side of the vertical pointed foot away from the installation ring, and the tip of the inclined pointed foot is inclined upward; 5. The soil pollution treatment sampling device according to claim 4, characterized in that, The control assembly includes a return spring fixedly installed on the side of the fixing plate away from the counterweight block and a return plate fixedly installed at the other end of the return spring; 6. The soil pollution treatment sampling device according to claim 5, wherein A slot is opened on one side of the guiding slider two close to the fixing plate. A plug rod fixedly installed on one side of the return plate close to the counterweight block and slidably penetrating the fixing plate and cooperating with the slot is provided; 7. A contaminated soil treatment sampling device according to claim 3, characterized in that, The pulling component includes a mounting bracket fixedly installed on the side of the fixed plate away from the counterweight and in an L shape. Two fixed pulleys are rotatably installed on the mounting bracket. One fixed pulley is located on the right side of the reset plate, and the other fixed pulley is located below the reset plate. A pulling rope is wound around the outside of the two fixed pulleys.

8. The soil pollution control sampling device according to claim 1, characterized in that, An annular groove is formed at the hinge joint between the support rod and the mounting ring. The top end of the pulling rope is fixedly connected to the reset plate. The bottom end of the pulling rope bypasses the hinge shaft of the support rod and the mounting ring and is fixedly installed in the annular groove. When the support rod unfolds, it will stretch the pulling rope downward.

9. The sampling device for treating contaminated soil according to claim 1, wherein A cylinder is fixedly installed at the bottom of the mounting ring through a bottom plate. An ear plate fixedly connected to the output end of the cylinder is fixedly installed on the outside of the sliding sleeve.

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