Sampling device for soil pollution analysis

Abstract

The utility model discloses a sampling device for soil pollution analysis, which comprises two supporting rods, a first cross rod connected to the lower ends of the two supporting rods, a second cross rod fixed to the upper ends of the two supporting rods, a lantern ring fixed to the center of the first cross rod and detachably sleeved with a soil sampling cup, and a pressing plate moving in the length direction of the supporting rods and installed on the supporting rods. The pressing plate is correspondingly provided with a rod sleeve sleeved with the supporting rod, and the soil sampling cup is provided with a limiting ring corresponding to the cup bottom edge side. During sampling, the sampling cup is installed in the lantern ring, the opening side of the sampling cup faces downwards, the cup bottom faces upwards, then the pressing plate is driven to move in the direction of the supporting rod, the cup bottom is pressed, the cup opening side is inserted into soil, the soil sampling cup is inserted into the soil by a certain distance under the action of the limiting ring, the amount of a sampled soil sample is kept constant, sampling is conducted in sequence, and after one-time sampling is completed, sampling is completed. The sampling cup is replaced once, the pollution cross problem is avoided, and the accuracy of soil detection analysis is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of soil analysis equipment, and particularly relates to a sampling device for soil pollution analysis. Background Technique

[0002] Pollutants such as waste water and waste residues discharged from the original industrial plot seep through the ground surface to cause pollution. With the long-term stacking of waste residues, heavy metal pollutants gradually seep downward, causing different degrees of pollution to the soil. Through rain leaching and ground washing water scouring, the pollutants gradually migrate into the deep soil, and long-term effects may cause pollution to the underlying soil. Dust is generated during the crushing and piling production process. Affected by monsoons and convection, these pollutants may cause different degrees of pollution to each area within the mining site through atmospheric dry and wet deposition. Pollutants deposited on the ground surface are leached and infiltrated by rainwater, and gradually pollute the underlying soil through vertical migration.

[0003] Pollutants entering the soil of the plot may undergo different degrees of horizontal and vertical migration due to different geological strata distributions. Heavy metal pollutants can all migrate downward through soil layers with better permeability, and may undergo lateral migration along the direction of groundwater flow when encountering continuous bedrock layers or aquitards. It is necessary to analyze and judge the specific pollution situation and scope according to the regional geological conditions. In order to analyze the degree of soil pollution, soil can be sampled at different positions and then analyzed in the laboratory. Sampling needs to be carried out in gradients, and the sample soil for each sampling needs to be marked well to obtain soil samples at different positions and analyze the impact of pollutants on soil infiltration and diffusion. Existing sampling is all carried out by obtaining soil with a soil sampler and then putting it into a special container. However, repeated sampling with the soil sampler without cleaning leads to cross-contamination of soil at different levels by the residual soil sampled in the soil sampler. Therefore, the utility model combines the soil sampler with the sampling container, and the sampling container can be disassembled after sampling to prevent cross-contamination problems during the sampling process. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sampling device for soil pollution analysis, which combines a soil sampler with a sampling container, and the sampling container can be disassembled after sampling to prevent cross-contamination problems during the sampling process.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] A sampling device for soil pollution analysis includes two support rods, the two support rods are parallel to each other, the lower ends of the two support rods are connected with a first cross bar, and the upper ends of the two support rods are fixed with a second cross bar. The second cross bar has a horizontally extending portion corresponding to the end of the support rod for hand pressing and exerting force;

[0007] A collar is fixed at the center of the first crossbar, the collar is an annular structure, and a soil cup is detachably sleeved thereon; a pressing plate is installed on the support rod, which moves along the length direction of the support rod, and the pressing plate is connected to the two support rods, and the pressing plate has a rod sleeve sleeved thereon corresponding to the support rod;

[0008] The soil collecting cup is provided with a limiting ring on the side corresponding to the bottom of the cup.

[0009] Furthermore, the positions of the two side support rods corresponding to the ends of the first crossbars are provided with sleeves for the ends of the first crossbars to pass through and rotate with. The lower ends of the support rods corresponding to the sleeves are fixed with positioning pins, which are along the length direction of the support rods and have pointed ends for inserting into the soil.

[0010] A sleeve is also installed between the collar and the sampling cup. The sleeve is a tubular structure. The limiting ring is located on the upper opening side of the sleeve. The lower opening side of the sleeve has a wedge-shaped side. The sampling cup is limitedly installed on the sleeve. The sleeve has a limiting step on one side corresponding to the wedge-shaped side, which is used to support the opening side of the sampling cup. The collar has annular folded edges on both sides of the opening.

[0011] The utility model has the following beneficial effects: the soil sampling cup is a tubular side, one end is a sealed side, and the other side is an open side, which is used to receive the sampled soil and store it after marking. When sampling, the sampling cup is installed in the collar, with the open side of the sampling cup facing downward and the bottom of the cup facing upward, and then the pressing plate is driven to move along the direction of the support rod, pressing the bottom of the cup so that the cup mouth side is inserted into the soil. Under the action of the limiting ring, the soil sampling cup is inserted into the soil at a certain distance, so that the amount of the sampled soil sample is kept constant. After the soil sampling is completed, the support rod is pulled upward to drive the collar to rise, and the sampling cup is driven to rise in linkage through the limiting ring, and the sampling cup after sampling is pulled out of the soil to complete the sampling.

[0012] Take samples sequentially and replace the sampling cup after completing each sampling to avoid cross-contamination problems and improve the accuracy of soil testing and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0014] Figure 1 : Schematic diagram of the overall structure of the utility model.

[0015] Figure 2 : Schematic diagram of the disassembly structure of the sleeve and sampling cup of the utility model.

[0016] Figure 3 : Schematic diagram of the partial cutaway structure of the sleeve and sampling cup of the utility model.

[0017] In the accompanying drawings, the list of components represented by each reference numeral is as follows: support rod 3, first cross bar 1, second cross bar 2, collar 11, soil cup 5, pressure plate 4, rod sleeve 41, shaft sleeve 31, positioning drill 32, sleeve 6, limiting ring 61, limiting step 62, annular folding edge 12. DETAILED DESCRIPTION

[0018] 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 of the embodiments.

[0019] like Figure 1-2 As shown: A sampling device for soil pollution analysis, including two support rods 3, a rod body with a circular cross section, the two support rods 3 are parallel to each other, the lower ends of the two support rods 3 are connected to a first cross bar 1, the upper ends of the two support rods 3 are fixed with a second cross bar 2, the second cross bar 2 has a horizontal extension portion corresponding to the end of the support rod 3, which is used for hand pressing and force; the extension portion is connected with a leather cover to increase the hand-held grip.

[0020] A ring 11 is fixed in the center of the first cross bar 1. The ring 11 is an annular structure and is detachably sleeved with a soil cup 5. The support rod 3 is equipped with a pressing plate 4 that moves along the length direction of the support rod 3. The pressing plate 4 is connected to the two support rods 3, and the pressing plate 4 corresponds to a rod sleeve 41 that is sleeved on the support rod 3; the pressing plate is driven by pressing with a single foot.

[0021] The soil collecting cup 5 has a limiting ring on the side corresponding to the bottom of the cup.

[0022] The soil cup is a tubular side body, with one end as a sealed side and the other side as an open side, which is used to receive the sampled soil and store it after marking. When sampling, install the sampling cup in the collar, with the open side of the sampling cup facing down and the bottom of the cup facing up, and then drive the pressing plate to move along the direction of the support rod, press the bottom of the cup, and insert the cup mouth side into the soil. Under the action of the limit ring, the soil cup is inserted into the soil at a certain distance, so that the amount of soil sampled is kept constant. After the soil is collected, pull the support rod upward to drive the collar to rise, and drive the sampling cup to rise in linkage through the limit ring, and pull the sampling cup out of the soil after sampling to complete the sampling.

[0023] Take samples sequentially and replace the sampling cup after completing each sampling to avoid cross-contamination of soil at different levels and improve the accuracy of soil testing and analysis.

[0024] like Figure 2As shown in the figure: At the positions of the two side support rods 3 corresponding to the ends of the first cross bar 1, there are bushing 31 for the ends of the first cross bar 1 to pass through and rotate in cooperation. The first cross bar is rotatably arranged corresponding to its own axis. After soil sampling, by rotating the first cross bar, the sampling cup is inverted with the cup mouth and the cup bottom, with the cup mouth facing down during sampling and the cup mouth facing up after sampling by rotating the first cross bar, to prevent the soil sample from falling. At the lower ends of the support rods 3 corresponding to the bushings 31, positioning pins 32 are fixed. The positioning pins 32 are along the length direction of the support rods 3, and the ends are pointed for inserting into the soil. For positioning work, the positioning pins are inserted first before sampling, and then it is convenient to accurately position the sampling point.

[0025] As Figure 2-3 As shown in the figure: A sleeve 6 is also installed between the collar 11 and the sampling cup 5. The sleeve 6 is a pipe structure. The limiting ring 61 is located on the upper opening side of the sleeve. The lower opening side of the sleeve 6 has a wedge side. The sampling cup 5 is limitedly installed on the sleeve 6. The sleeve is inserted into the soil instead of the sampling cup. The sleeve has a wedge side groove that is easier to insert into the soil, avoiding damage to the sampling cup caused by the force on the cup mouth. The sampling cup does not require a hard material. One side of the sleeve 6 corresponding to the wedge side has a limiting step 62 for supporting the opening side of the sampling cup 5. It is used to bring out the sampling cup when pulling out the sleeve. The collar 11 has annular flanges 12 on both sides corresponding to the openings. Corresponding to the limiting ring, it is used for a better limiting effect.

[0026] This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention.

Claims

1. A sampling device for soil pollution analysis, characterized in that: It includes two support rods (3), the two support rods (3) are parallel to each other, the lower ends of the two support rods (3) are connected with a first cross bar (1), the upper ends of the two support rods (3) are fixed with a second cross bar (2), and the second cross bar (2) has a horizontal extension part corresponding to the end of the support rod (3) for hand pressing and exerting force; A collar (11) is fixed in the center of the first cross bar (1), the collar (11) is of an annular structure, and a soil sampling cup (5) is detachably sleeved thereon. A pressing plate (4) that moves along the length direction of the support rod (3) is installed on the support rod (3), the pressing plate (4) is connected to the two support rods (3), and the pressing plate (4) correspondingly has a rod sleeve (41) sleeving the support rod (3); The soil sampling cup (5) has a limiting ring corresponding to the bottom side of the cup.

2. The sampling device for soil pollution analysis according to claim 1, wherein: Bushing (31) is provided at the position corresponding to the end of the first cross bar (1) on both sides of the support rod (3) for the end of the first cross bar (1) to pass through and rotate in cooperation.

3. The sampling device for soil pollution analysis according to claim 2, wherein: Positioning pins (32) are fixed at the lower ends of the support rods (3) corresponding to the bushings (31), the positioning pins (32) are along the length direction of the support rods (3), and the ends are pointed for inserting into the soil.

4. The sampling device for soil pollution analysis according to claim 1, wherein: A sleeve (6) is also installed between the collar (11) and the sampling cup (5), the sleeve (6) is of a tubular structure, a limiting ring (61) is located on the upper opening side of the sleeve, the lower opening side of the sleeve (6) has a wedge-shaped side, and the sampling cup (5) is limitedly installed on the sleeve (6).

5. The sampling device for soil pollution analysis according to claim 4, characterized in that: The sleeve (6) has a limiting step (62) on one side corresponding to the wedge-shaped side for supporting the opening side of the sampling cup (5).

6. The sampling device for soil pollution analysis according to claim 1 or 5, characterized in that: The collar (11) has annular flanges (12) corresponding to both opening sides.

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