CN-121972503-A - Soil trace pollutant enrichment device

CN121972503ACN 121972503 ACN121972503 ACN 121972503ACN-121972503-A

Abstract

The embodiment of the disclosure provides a soil trace pollutant enrichment device, which comprises a soil drilling mechanism, wherein the lower part of a column-shaped shell is provided with an opening, the soil drilling mechanism is arranged at the lower side of the column-shaped shell and comprises a power device and a rotary scraping plow, the rotary scraping plow comprises a central connecting body and a plurality of coulters, the central connecting body is connected with an output shaft of the power device, the coulters are uniformly distributed in the circumferential direction and are converged at the central position to form a pointed head, each coulter is uniformly distributed and comprises a main coulter part, the main coulter part comprises a first front coulter surface which is obliquely arranged relative to a coulter rotary shaft and a first rear coulter surface which is positioned at the bottom end of the coulter and is adjacent to the first front coulter surface, when the power device drives the rotary scraping plow to rotate forwards, the cutting edge formed by the first front coulter and the first rear coulter is used for scraping soil on the lower soil layer, the scraped soil enters into a column-shaped accommodating cavity under the oblique pushing action of the first front coulter surface, and the projection surface of the column-shaped shell is positioned in a rotary scraping operation surface formed when the rotary scraping plow rotates.

Inventors

ZHAO HONGSHUAI
YANG DONGYAN
HU YUEQI
LIN ANGUO
ZOU BENDONG
WANG TAO
HUA LANYING
XIA YE

Assignees

北京市生态环境监测中心

Dates

Publication Date: 20260505
Application Date: 20260323
Priority Date: 20250401

Claims (10)

1. The soil trace pollutant enrichment device is characterized by comprising a column shell, a pollution enrichment assembly and a soil drilling mechanism; the column-shaped shell forms a column-shaped containing cavity for containing soil samples, and the lower part of the column-shaped containing cavity is opened; The pollution enrichment component is horizontally arranged at the bottom of the inner side of the column-shaped cavity and comprises a pollutant enrichment membrane; The soil drilling mechanism is arranged at the lower side of the column-shaped shell and comprises a power device and a rotary scraping plow, wherein the rotary scraping plow comprises a central connecting body and a plurality of coulters, the central connecting body is connected with an output shaft of the power device, and the coulters are connected with the central connecting body, uniformly distributed in the circumferential direction and converged at the central position to form a pointed head; The power device drives the rotary scraping plow to rotate forward, the cutting edge formed by the first front cutter surface and the first rear cutter surface realizes the scraping plow of a soil layer at the lower side, and soil scraped by the scraping plow enters the column-shaped accommodating cavity through the oblique pushing action of the first front cutter surface; The cross-sectional projection surface of the column-shaped shell is positioned in a rotary scraping working surface formed when the rotary scraping plow rotates.
2. The apparatus according to claim 1, wherein: the secondary blade parts are positioned on the first front blade surface side and comprise inner blade surfaces facing the inner side of the circumference and outer blade surfaces facing the outer side of the circumference; The juncture of the inner side knife face and the outer side knife face forms a vertical cutting edge for scraping the lower soil layer in the vertical direction when the rotary scraping plow rotates forwards.
3. The apparatus of claim 2, wherein the cylindrical shell is a cylindrical shell; when the rotary scraping plough rotates, the circle formed on the outermost peripheral side of the auxiliary knife part coincides with the orthographic projection edge of the column-shaped shell.
4. The apparatus according to claim 1, wherein: A soil bearing plate with water leakage holes on the surface is arranged in the column-shaped shell; the soil bearing plate is connected with the column-shaped shell, and a clearance area is arranged between the soil bearing plate and the column-shaped shell; the first rake face is arranged to enable soil scraped up by the rotary scraping plow to move from a central area to an edge area along the first rake face when the rotary scraping plow rotates in the forward direction, and the soil is enabled to enter the column-shaped containing cavity through the empty area.
5. The apparatus according to any one of claims 1-4, wherein: The main cutter part comprises a second front cutter surface and a second rear cutter surface, the second front cutter surface is arranged opposite to the first front cutter surface, and the second rear cutter surface is positioned at the top end of the coulter and is adjacent to the second front cutter surface; when the power device drives the rotary scraping plough to reversely rotate, the cutting edge formed by the cooperation of the second front cutter surface and the second rear cutter surface realizes the scraping of upper side soil, and the soil formed by the scraping plough moves downwards under the oblique pushing action of the second front cutter surface.
6. The apparatus according to any one of claims 1-4, wherein: The column shell comprises at least two split shells; the first shell is sleeved in the second shell, and the first shell and the second shell are connected through a first axial expansion device, so that the first shell and the second shell relatively move in the axial direction when the first axial expansion device acts, and the volume of the column-shaped containing cavity is increased or decreased; The pollution enrichment assembly is connected with the bottom shells of the at least two split shells, or is arranged in the column-shaped containing cavity through a second axial telescopic device and is connected with the top shells of the at least two split shells.
7. The apparatus according to claim 6, wherein: the first axial telescopic device also comprises a detection device for determining the mutual overlapping degree of the at least two split shells, or The column-shaped shell is internally provided with a distance monitoring device for monitoring the distance between the column-shaped shell and a reference object, one of the distance monitoring device and the reference object is arranged on the bottom shell of the at least two split shells, and the other is arranged on the top shell of the at least two split shells.
8. The apparatus according to any one of claims 1-4, wherein: the cutting edge of the scraping plow where the first front cutter surface and the first rear cutter surface are connected is also provided with crushing teeth.
9. The apparatus according to any one of claims 1-4, wherein: The contaminant-enriched membrane is a sulfonated styrene-vinyl benzene copolymer membrane or a polydimethylsiloxane membrane.
10. The apparatus according to claim 9, wherein: The pollution enrichment further comprises an upper protection plate and a lower protection plate with holes on the surfaces; the pollutant-enriching film is arranged between the upper protection plate and the lower protection plate.

Description

Soil trace pollutant enrichment device Technical Field The disclosure relates to the technical field of soil pollution monitoring, in particular to a soil trace pollutant enrichment device. Background The new pollutants are pollutants which are produced by production and living, but are not regulated or incompletely regulated by legal regulations and standards and endanger ecological environment and life health. Currently, more than 20 broad classes of new contaminants have been found and validated to exist, with a typical new contaminant being an antibiotic. Antibiotics are exemplified because 90% of the surrounding environment which is used by humans and animals and enters along with the discharge of excrement and urine in the form of raw materials or metabolites, enters the soil by dry and wet sedimentation, sewage irrigation and the like, and enters surface water, deep soil and even groundwater in the soil by transverse and longitudinal migration. Sampling studies have found that antibiotic components are monitored in invertebrates, plant roots and stems and leaves that survive in the soil in many areas, verifying that soil is already an important "sink" and "source" of antibiotics in the ecological environment. The monitoring of new contaminant characteristics such as antibiotics in soil has been a major task in soil contaminant monitoring. Because the concentration in soil is generally low in new contaminants of the antibiotic type, typically on the order of μg/L, ng/L. At present, the detection and the measurement of the new pollution concentration of antibiotics and the like in soil can meet the requirement of precision instrument analysis only after a large amount of soil samples are collected, extracted by adopting an organic reagent extraction mode and concentrated to form a concentrated solvent, and is not suitable for the requirement of conventional large-scale monitoring application. Disclosure of Invention The embodiment of the disclosure provides a soil trace pollutant enrichment device, which comprises a column shell, a pollution enrichment assembly and a soil drilling mechanism; the column-shaped shell forms a column-shaped containing cavity for containing soil samples, and the lower part of the column-shaped containing cavity is opened; The pollution enrichment component is horizontally arranged at the bottom of the inner side of the column-shaped cavity and comprises a pollutant enrichment membrane; The soil drilling mechanism is arranged at the lower side of the column-shaped shell and comprises a power device and a rotary scraping plow, wherein the rotary scraping plow comprises a central connecting body and a plurality of coulters, the central connecting body is connected with an output shaft of the power device, and the coulters are connected with the central connecting body, uniformly distributed in the circumferential direction and converged at the central position to form a pointed head; The power device drives the rotary scraping plow to rotate forward, the cutting edge formed by the first front cutter surface and the first rear cutter surface realizes the scraping plow of a soil layer at the lower side, and soil scraped by the scraping plow enters the column-shaped accommodating cavity through the oblique pushing action of the first front cutter surface; The cross-sectional projection surface of the column-shaped shell is positioned in a rotary scraping working surface formed when the rotary scraping plow rotates. Optionally, each coulter comprises a pair of coulters positioned on the outer peripheral side of the main coulter part, wherein each pair of coulters is positioned on the first front coulter surface side and comprises an inner coulter surface facing the inner side of the circumference and an outer coulter surface facing the outer side of the circumference; The juncture of the inner side knife face and the outer side knife face forms a vertical cutting edge for scraping the lower soil layer in the vertical direction when the rotary scraping plow rotates forwards. Optionally, the cylindrical shell is a cylindrical shell, and when the rotary scraping plow rotates, a circle formed on the outermost peripheral side of the auxiliary knife part coincides with the orthographic projection edge of the cylindrical shell. Optionally, a soil bearing plate with water leakage holes on the surface is arranged in the column shell; the soil bearing plate is connected with the column-shaped shell, and a clearance area is arranged between the soil bearing plate and the column-shaped shell; the first rake face is arranged to enable soil scraped up by the rotary scraping plow to move from a central area to an edge area along the first rake face when the rotary scraping plow rotates in the forward direction, and the soil is enabled to enter the column-shaped containing cavity through the empty area. Optionally, the main blade part includes a second rake surface opposite to the first rake surf