A sampling device for monitoring heavy metals in soil

Abstract

The utility model relates to soil sampling technical field, and disclose a kind of sampling device for soil heavy metal monitoring, to solve the problems, such as low efficiency of traditional device, difficult stratified sampling etc., it includes trolley with universal wheel and handle, trolley surface is equipped with adjusting mechanism and sampling mechanism, adjusting mechanism contains horizontal and longitudinal adjusting assembly, horizontal passes through first servo motor drive screw rod, and drives sliding base along fixed rod horizontal sliding;Longitudinal is driven screw rod by second servo motor, so that sliding base along fixed rod longitudinal sliding, realize the multi-position adjustment of sampling mechanism, in sampling mechanism, first hydraulic cylinder drives hydraulic telescopic column with sampling soil sampling tube into soil, after taking soil, first cylinder drives push plate to push out sample, bottom baffle is opened and closed by second cylinder control and realizes stratified sampling, the setting of sampling mechanism can realize efficient soil sampling and convenient unloading, simultaneously stratified sampling function can be realized in sampling process, protective housing protects cylinder, the device is efficient and convenient, can guarantee sample purity and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling technology, specifically a sampling device for monitoring heavy metals in soil. Background Technology

[0002] Soil heavy metal pollution threatens the ecological environment and human health. Accurate monitoring is a prerequisite for pollution control. Traditional sampling devices have many limitations: manual sampling is inefficient, lacks depth control precision, and easily leads to poor sample representativeness; some devices have complex structures and are cumbersome to operate, making them unsuitable for complex terrains such as mountains and farmland; and cross-contamination of samples is prone to occur during sampling, affecting the accuracy of detection. In addition, existing devices often cannot achieve stratified sampling, failing to meet the analytical needs of heavy metal distribution characteristics in soil at different depths, and urgently require optimization and improvement.

[0003] According to a sampling device for soil testing disclosed on the patent website (authorization announcement number: CN212432602U), "This utility model provides a sampling device for soil testing, including a fixed plate and operating handles on both sides of the fixed plate. The bottom of the fixed plate is provided with a fixed cylinder along the vertical direction, and a sampling head is provided at the lower end of the fixed cylinder. The sampling head consists of an annular sampling part detachably provided at the lower end of the fixed cylinder and a bucket-shaped sampling part integrally formed at the lower end of the annular sampling part, which is larger at the top and smaller at the bottom. A sampling port is provided at the lower end of the bucket-shaped sampling part. A fixed rod is provided axially inside the fixed cylinder. A sealing head adapted to the sampling port is provided at the lower end of the fixed rod. The sealing head cooperates with the bucket-shaped sampling part to form a conical structure. A positioning adjustment component is provided at the upper end of the fixed rod, and a guide component cooperating with the fixed rod is provided inside the fixed cylinder. This utility model has a simple and compact structure, can avoid collecting soil at different depths, thereby ensuring the detection structure and having a good effect."

[0004] Based on the above, the applicant believes the following deficiencies exist:

[0005] The sampling device for soil testing includes a fixed plate and operating handles on both sides of the fixed plate. This invention has a simple and compact structure, which can avoid collecting soil at different depths, thus ensuring the testing structure and achieving good results. However, the existing devices have low overall soil sampling efficiency. The soil sampling process relies on manual labor or inefficient power devices, resulting in a slow insertion speed of the sampling tube into the soil and low overall soil sampling efficiency. This makes it difficult to meet the needs of large-scale and high-frequency sampling. After sampling, the residual soil in the sampling tube needs to be cleaned manually, which not only increases labor costs and operation time, but may also affect the accuracy of subsequent sampling due to incomplete cleaning. Utility Model Content

[0006] The purpose of this invention is to provide a sampling device for monitoring heavy metals in soil, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a sampling device for monitoring heavy metals in soil, comprising a trolley, wherein universal wheels are installed at the four corners of the bottom of the trolley, a handle is fixedly connected to the back of the trolley, and an adjustment mechanism is provided on the surface of the trolley, the adjustment mechanism comprising a horizontal adjustment component and a vertical adjustment component, and a sampling mechanism is provided on the surface of the vertical adjustment component;

[0008] The sampling mechanism includes a first hydraulic cylinder, and the longitudinal adjustment assembly includes a connecting plate. The first hydraulic cylinder is mounted on the top front end of the connecting plate. A hydraulic telescopic column is located at the bottom end of the first hydraulic cylinder. A connecting frame is fixedly connected to the bottom end of the hydraulic telescopic column. A first cylinder is mounted inside the connecting frame. A first pneumatic telescopic column is located at the bottom end of the first cylinder. A push plate is fixedly connected to the bottom end of the first pneumatic telescopic column. Connecting columns are fixedly connected to the left and right ends of the bottom end of the connecting frame. A sampling soil collection cylinder is fixedly connected to the inner end of the connecting column. Fixed seats are fixedly connected to the bottom ends of the left and right sides of the surface of the sampling soil collection cylinder. A base plate is fixedly connected to the bottom end of the fixed seats. A second cylinder is mounted on the outer end of the base plate. A protective shell is mounted on the outer end of the base plate. A second pneumatic telescopic column is located inside the base plate. A partition is fixedly connected to the inner end. A hydraulic telescopic column driven by a first hydraulic cylinder can quickly insert the sampling tube into the soil to complete soil collection. After soil collection, the first pneumatic telescopic column driven by the first cylinder pushes the push plate, which can quickly push out the soil sample in the sampling tube without manual cleaning, thus improving sampling efficiency. The partition at the bottom of the sampling tube is controlled to open and close by a second cylinder through a second pneumatic telescopic column. During soil collection, layered sampling can be achieved by controlling the opening and closing of the partition, avoiding mixing of soil samples from different depths, ensuring sample purity, and meeting the requirements of heavy metal monitoring for layered data. The second cylinder is encased in a protective shell, which can reduce wear on the cylinder caused by soil impurities or the external environment, and extend the service life of the equipment. The sampling mechanism can achieve efficient soil collection and convenient unloading, and can also realize the layered sampling function during the sampling process.

[0009] Preferably, the hydraulic telescopic column is driven by a first hydraulic cylinder, the first pneumatic telescopic column is driven by a first air cylinder, and the second pneumatic telescopic column is driven by a second air cylinder.

[0010] Preferably, the pusher plate is located at the top inside the sampling soil collection cylinder, and the second cylinder is located inside the protective outer shell.

[0011] Preferably, the lateral adjustment assembly includes a first fixed frame, which is fixedly connected to the left side of the top of the trolley. A first screw is rotatably connected to the middle section inside the first fixed frame, and a first servo motor is installed in the middle section of the back of the first fixed frame. A second fixed frame is fixedly connected to the right side of the top of the trolley, and a first fixed rod is fixedly connected to the middle section inside the second fixed frame. A first slide is provided on the surface of the first screw and the first fixed rod, and a fixed frame is fixedly connected to the inner end of the first slide.

[0012] Preferably, the first screw is fixedly connected to the front output end of the first servo motor, the first slide is slidably connected to the surface of the first fixed rod, and the first slide is threadedly connected to the surface of the first screw.

[0013] Preferably, the longitudinal adjustment component includes a second screw, the lateral adjustment component includes a fixed frame, the second screw is rotatably connected to the right side inside the fixed frame, a second fixed rod is fixedly connected to the left side inside the fixed frame, a second servo motor is installed on the top right side of the fixed frame, a second slide is provided on the surface of the second screw and the second fixed rod, and a connecting plate is fixedly connected to the front of the second slide.

[0014] Preferably, the second screw is fixedly connected to the bottom output end of the second servo motor, the second slide is threadedly connected to the surface of the second screw, and the second slide is slidably connected to the surface of the second fixed rod.

[0015] Compared with the prior art, the present invention provides a sampling device for monitoring heavy metals in soil, which has the following beneficial effects:

[0016] 1. This soil heavy metal monitoring sampling device is equipped with a sampling mechanism. A first hydraulic cylinder drives a hydraulic telescopic column, which can quickly insert the sampling tube into the soil to complete soil collection. After soil collection, a first pneumatic cylinder drives a first pneumatic telescopic column to push a push plate, which can quickly push out the soil sample in the sampling tube without manual cleaning, thus improving sampling efficiency. The partition at the bottom of the sampling tube is controlled to open and close by a second cylinder through a second pneumatic telescopic column. During soil collection, layered sampling can be achieved by controlling the opening and closing of the partition, avoiding mixing of soil samples from different depths, ensuring sample purity, and meeting the requirements of heavy metal monitoring for layered data. The second cylinder is encased in a protective shell, which can reduce wear on the cylinder caused by soil impurities or the external environment, and extend the service life of the equipment. The sampling mechanism enables efficient soil collection and convenient unloading, and can also realize layered sampling during the sampling process.

[0017] 2. This soil heavy metal monitoring sampling device is equipped with an adjustment mechanism. In the lateral adjustment component, a first servo motor drives a first screw to rotate, causing a first slide to slide laterally along a first fixed rod. This, in turn, adjusts the lateral position of the sampling mechanism via a fixed frame. Sampling at different lateral points can be achieved without moving the trolley, improving operational convenience. In the longitudinal adjustment component, a second servo motor drives a second screw to rotate, causing a second slide to slide longitudinally along a second fixed rod. This, along with a connecting plate, adjusts the longitudinal position of the sampling mechanism. Combined with lateral adjustment, full coverage of the sampling area can be achieved, meeting the point requirements for large-area soil monitoring. Lateral adjustment is achieved through the cooperation of the first screw and the first fixed rod, while longitudinal adjustment is achieved through the cooperation of the second screw and the second fixed rod. This dual-guide structure ensures the stability of the sampling mechanism during adjustment, preventing sampling position deviations due to shaking and ensuring sample accuracy. The adjustment mechanism allows for multi-axial position adjustment, enabling soil sampling at different locations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structural adjustment mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the sampling mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the push plate structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the detached sampling mechanism of the present invention.

[0024] In the diagram: 1. Trolley; 2. Casters; 3. Handle; 4. Adjustment mechanism; 41. Lateral adjustment assembly; 411. First fixed frame; 412. First screw; 413. First servo motor; 414. Second fixed frame; 415. First fixed rod; 416. First slide; 417. Fixed frame; 42. Longitudinal adjustment assembly; 421. Second screw; 422. Second servo motor; 423. Second fixed rod; 424. Second slide; 425. Connecting plate; 5. Sampling mechanism; 51. First hydraulic cylinder; 52. Hydraulic telescopic column; 53. Connecting frame; 54. First cylinder; 55. First pneumatic telescopic column; 56. Push plate; 57. Connecting column; 58. Sampling and soil collection tube; 59. Fixed seat; 501. Base plate; 502. Second cylinder; 503. Protective shell; 504. Second pneumatic telescopic column; 505. Partition. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] This utility model provides the following technical solution:

[0028] Example 1

[0029] Please see Figure 1-5 A soil heavy metal monitoring sampling device includes a cart 1, with universal wheels 2 installed at the four corners of the bottom of the cart 1, a handle 3 fixedly connected to the back of the cart 1, and an adjustment mechanism 4 provided on the surface of the cart 1. The adjustment mechanism 4 includes a horizontal adjustment component 41 and a vertical adjustment component 42, and a sampling mechanism 5 provided on the surface of the vertical adjustment component 42.

[0030] The sampling mechanism 5 includes a first hydraulic cylinder 51. The longitudinal adjustment assembly 42 includes a connecting plate 425. The first hydraulic cylinder 51 is installed at the top front end of the connecting plate 425. A hydraulic telescopic column 52 is provided at the bottom end of the first hydraulic cylinder 51. A connecting frame 53 is fixedly connected to the bottom end of the hydraulic telescopic column 52. A first cylinder 54 is installed at the inner end of the connecting frame 53. A first pneumatic telescopic column 55 is provided at the bottom end of the first cylinder 54. A push plate 56 is fixedly connected to the bottom end of the first pneumatic telescopic column 55. Connecting columns 57 are fixedly connected to the left and right ends of the bottom end of the connecting frame 53. A sampling tube 58 is fixedly connected to the inner end of the connecting column 57. A fixed seat 59 is fixedly connected to the bottom ends of the left and right sides of the surface of the sampling tube 58. A base plate 501 is fixedly connected to the bottom end of the fixed seat 59. A second cylinder 502 is installed at the outer end of the base plate 501. A protective shell 503 is installed at the outer end of the base plate 501. A second pneumatic telescopic column 504 is provided at the inner end of the base plate 501. A partition 505 is fixedly connected to the inner end. The first hydraulic cylinder 51 drives the hydraulic telescopic column 52, which can drive the sampling tube 58 to quickly insert into the soil to complete the soil collection. After the soil is collected, the first cylinder 54 drives the first pneumatic telescopic column 55 to push the push plate 56, which can quickly push out the soil sample in the sampling tube 58 without manual cleaning, thus improving the sampling efficiency. The partition 505 at the bottom of the sampling tube 58 is controlled to open and close by the second cylinder 502 through the second pneumatic telescopic column 504. During the soil collection process, the opening and closing of the partition 505 can be controlled to achieve layered sampling, avoid the mixing of soil samples at different depths, ensure sample purity, and meet the requirements of heavy metal monitoring for layered data. The second cylinder 502 is wrapped by a protective shell 503, which can reduce the wear of the cylinder by soil impurities or the external environment and extend the service life of the equipment. The sampling mechanism 5 can achieve efficient soil collection and convenient unloading, and can also achieve layered sampling function during the sampling process.

[0031] The hydraulic telescopic column 52 is driven by the first hydraulic cylinder 51, the first pneumatic telescopic column 55 is driven by the first air cylinder 54, and the second pneumatic telescopic column 504 is driven by the second cylinder 502.

[0032] The push plate 56 is located at the top inside the sampling tube 58, and the second cylinder 502 is located inside the protective shell 503.

[0033] Example 2

[0034] Please see Figure 1-5Furthermore, based on Embodiment 1, the lateral adjustment component 41 further includes a first fixed frame 411, which is fixedly connected to the top left side of the trolley 1. A first screw 412 is rotatably connected to the middle section inside the first fixed frame 411. A first servo motor 413 is installed on the middle section of the back of the first fixed frame 411. A second fixed frame 414 is fixedly connected to the top right side of the trolley 1. A first fixed rod 415 is fixedly connected to the middle section inside the second fixed frame 414. A first slide block 416 is provided on the surface of the first screw 412 and the first fixed rod 415. A fixed frame 417 is fixedly connected to the inner end of the first slide block 416.

[0035] The first screw 412 is fixedly connected to the front output end of the first servo motor 413, the first slide block 416 is slidably connected to the surface of the first fixed rod 415, and the first slide block 416 is threadedly connected to the surface of the first screw 412.

[0036] The longitudinal adjustment component 42 includes a second screw 421, and the lateral adjustment component 41 includes a fixed frame 417. The second screw 421 is rotatably connected to the right side of the inside of the fixed frame 417. A second fixed rod 423 is fixedly connected to the left side of the inside of the fixed frame 417. A second servo motor 422 is installed on the top right side of the fixed frame 417. A second slide block 424 is provided on the surface of the second screw 421 and the second fixed rod 423. A connecting plate 425 is fixedly connected to the front of the second slide block 424.

[0037] The second screw 421 is fixedly connected to the bottom output end of the second servo motor 422, the second slide 424 is threadedly connected to the surface of the second screw 421, and the second slide 424 is slidably connected to the surface of the second fixed rod 423.

[0038] In actual operation, when this device is in use, the trolley 1 is moved to the location where soil sampling is required via the casters 2 and handle 3. In the lateral adjustment assembly 41, the first servo motor 413 drives the first screw 412 to rotate, causing the first slide block 416 to slide laterally along the first fixed rod 415. The lateral position of the sampling mechanism 5 is then adjusted via the fixed frame 417. Sampling at different lateral points can be achieved without moving the trolley 1, improving operational convenience. In the longitudinal adjustment assembly 42, the second servo motor 422 drives the second screw 421 to rotate, causing the second slide block 424 to slide longitudinally along the second fixed rod 423. The longitudinal position of the sampling mechanism 5 is adjusted via the connecting plate 425. Combined with lateral adjustment, full coverage of the sampling area can be achieved, meeting the point requirements for large-area soil monitoring. Lateral adjustment is achieved through the cooperation of the first screw 412 and the first fixed rod 415, and longitudinal adjustment is achieved through the cooperation of the second screw 421 and the second fixed rod 423. The dual guide structure ensures the stability of the sampling mechanism 5 during adjustment, avoids sampling position deviation due to shaking, and ensures the accuracy of the sample. The adjustment mechanism 4 can achieve multi-axial position adjustment, enabling soil sampling at different locations.

[0039] The first hydraulic cylinder 51 drives the hydraulic telescopic column 52, which can quickly insert the sampling tube 58 into the soil to complete the soil collection. After the soil is collected, the first cylinder 54 drives the first pneumatic telescopic column 55 to push the push plate 56, which can quickly push out the soil sample in the sampling tube 58 without manual cleaning, thus improving the sampling efficiency. The partition 505 at the bottom of the sampling tube 58 is controlled to open and close by the second cylinder 502 through the second pneumatic telescopic column 504. During the soil collection process, the opening and closing of the partition 505 can be controlled to achieve layered sampling, avoid the mixing of soil samples at different depths, ensure sample purity, and meet the requirements of heavy metal monitoring for layered data. The second cylinder 502 is wrapped by the protective shell 503, which can reduce the wear of the cylinder by soil impurities or the external environment and extend the service life of the equipment. The sampling mechanism 5 can achieve efficient soil collection and convenient unloading, and can also realize the layered sampling function during the sampling process.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A soil heavy metal monitoring sampling device, comprising a trolley (1), characterized in that: The trolley (1) is equipped with casters (2) at the four corners of the bottom end, and a handle (3) is fixedly connected to the back of the trolley (1). An adjustment mechanism (4) is provided on the surface of the trolley (1). The adjustment mechanism (4) includes a horizontal adjustment component (41) and a vertical adjustment component (42). A sampling mechanism (5) is provided on the surface of the vertical adjustment component (42). The sampling mechanism (5) includes a first hydraulic cylinder (51), and the longitudinal adjustment assembly (42) includes a connecting plate (425). The first hydraulic cylinder (51) is installed at the top front end of the connecting plate (425). A hydraulic telescopic column (52) is provided at the bottom end of the first hydraulic cylinder (51). A connecting frame (53) is fixedly connected to the bottom end of the hydraulic telescopic column (52). A first cylinder (54) is installed at the inner end of the connecting frame (53). A first pneumatic telescopic column (55) is provided at the bottom end of the first cylinder (54). A push plate (56) is fixedly connected to the bottom end of the first pneumatic telescopic column (55). The connecting frame (54) is fixedly connected to the bottom end of the first pneumatic telescopic column (55). 3) Connecting columns (57) are fixedly connected to the left and right ends of the bottom. A sampling soil collection tube (58) is fixedly connected to the inner end of the connecting column (57). A fixed seat (59) is fixedly connected to the bottom ends of the left and right sides of the surface of the sampling soil collection tube (58). A base plate (501) is fixedly connected to the bottom end of the fixed seat (59). A second cylinder (502) is installed on the outer end of the base plate (501). A protective shell (503) is installed on the outer end of the base plate (501). A second pneumatic telescopic column (504) is provided on the inner end of the base plate (501). A partition plate (505) is fixedly connected to the inner end of the second pneumatic telescopic column (504).

2. The soil heavy metal monitoring sampling device according to claim 1, characterized in that: The hydraulic telescopic column (52) is driven by the first hydraulic cylinder (51), the first pneumatic telescopic column (55) is driven by the first air cylinder (54), and the second pneumatic telescopic column (504) is driven by the second air cylinder (502).

3. The soil heavy metal monitoring sampling device according to claim 1, characterized in that: The push plate (56) is located at the top inside the sampling soil tube (58), and the second cylinder (502) is located inside the protective shell (503).

4. The soil heavy metal monitoring sampling device according to claim 1, characterized in that: The lateral adjustment assembly (41) includes a first fixed frame (411), which is fixedly connected to the top left side of the trolley (1). A first screw (412) is rotatably connected to the middle section inside the first fixed frame (411). A first servo motor (413) is installed on the middle section of the back of the first fixed frame (411). A second fixed frame (414) is fixedly connected to the top right side of the trolley (1). A first fixed rod (415) is fixedly connected to the middle section inside the second fixed frame (414). A first slide (416) is provided on the surface of the first screw (412) and the first fixed rod (415). A fixed frame (417) is fixedly connected to the inner end of the first slide (416).

5. A soil heavy metal monitoring sampling device according to claim 4, characterized in that: The first screw (412) is fixedly connected to the front output end of the first servo motor (413), the first slide (416) is slidably connected to the surface of the first fixed rod (415), and the first slide (416) is threadedly connected to the surface of the first screw (412).

6. A soil heavy metal monitoring sampling device according to claim 1, characterized in that: The longitudinal adjustment component (42) includes a second screw (421), and the lateral adjustment component (41) includes a fixed frame (417). The second screw (421) is rotatably connected to the right side inside the fixed frame (417). A second fixed rod (423) is fixedly connected to the left side inside the fixed frame (417). A second servo motor (422) is installed on the top right side of the fixed frame (417). A second slide (424) is provided on the surface of the second screw (421) and the second fixed rod (423). A connecting plate (425) is fixedly connected to the front of the second slide (424).

7. A soil heavy metal monitoring sampling device according to claim 6, characterized in that: The second screw (421) is fixedly connected to the bottom output end of the second servo motor (422), the second slide (424) is threadedly connected to the surface of the second screw (421), and the second slide (424) is slidably connected to the surface of the second fixed rod (423).

Images