Soil trace pollutant enrichment device
By designing a soil trace pollutant enrichment device, the soil drilling mechanism and pollution enrichment membrane are used to achieve natural collection and enrichment of trace pollutants in the soil, solving the problem of high-cost monitoring in the existing technology, and achieving efficient and low-cost detection of trace pollutants in the soil.
Patent Information
- Application Number
- CN202510404001.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2025-05-30
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art is difficult to efficiently monitor and enrich trace pollutants, such as antibiotics in soil, especially because their concentrations are low and widely distributed, resulting in high detection costs and inappropriate for routine large-scale monitoring.
A soil trace pollutant enrichment device is designed, including a column-shaped shell, a pollution enrichment assembly and a soil drilling mechanism. The soil is filled into the column-shaped cavity through the soil drilling mechanism and covered with the pollution enrichment assembly. The natural collection and enrichment of trace pollutants are achieved using the pollution enrichment membrane, and the enrichment solvent is obtained through extraction.
It realizes efficient collection of trace pollutants in the soil under natural conditions, reduces detection costs, and is suitable for conventional large-scale monitoring needs without changing the distribution of pollutants in the depth direction of the soil.
Smart Images
Figure CN120055013A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of soil pollution monitoring, and particularly to a device for enriching trace pollutants in soil. Background Art
[0002] New pollutants are pollutants that are currently known to exist due to production and life, but there are no laws, regulations, or standards to regulate them or the regulations are imperfect, and they harm the ecological environment and human health. Currently, more than 20 major categories of new pollutants have been discovered and verified to exist, and typical new pollutants are antibiotics.
[0003] Taking antibiotics as an example, because 90% of them are excreted in the form of the original substance or metabolites with feces and urine after being used by humans and animals, they enter the surrounding environment, and enter the soil through dry and wet deposition, sewage irrigation, etc., and migrate horizontally and vertically in the soil into surface water, deep soil, and even groundwater. Through sampling and research, it has been found that antibiotic components have been detected in invertebrates, plant roots, and stems and leaves surviving in the soil in many areas, verifying that the soil has become an important "sink" and "source" of antibiotics in the ecological environment. Monitoring the characteristics of new pollutants such as antibiotics in soil has been listed as an important task in soil pollutant monitoring.
[0004] Because the concentrations of new pollutants such as antibiotics in soil are generally very low, generally at the μg / L or ng / L level. Currently, for the detection and determination of the concentrations of new pollutants such as antibiotics in soil, a large amount of soil samples need to be collected and extracted and concentrated by using organic reagents to form a concentrated solvent before it can meet the requirements of precise instrument analysis, which is not suitable for the needs of routine large-scale monitoring applications. Summary of the Invention
[0005] An embodiment of the present disclosure provides a device for enriching trace pollutants in soil, including a columnar shell, a pollution enrichment component, and a soil drilling mechanism;
[0006] The columnar shell forms a columnar cavity for containing soil samples; the lower part of the columnar cavity is open;
[0007] The pollution enrichment component is horizontally arranged at the inner bottom of the columnar cavity and includes a pollutant enrichment membrane;
[0008] The soil drilling mechanism is arranged on the lower side of the columnar shell and includes a power device and a rotary plow; the rotary plow includes a central connecting body and a plurality of plow blades; the central connecting body is connected to the output shaft of the power device; each of the plow blades is connected to the central connecting body, evenly distributed in the circumferential direction, and converges at the central position to form a pointed head;
[0009] Each of the plow blades uniformly includes a main blade portion; the main blade portion includes a first front blade surface that is inclined relative to the plow blade rotation axis, and a first rear blade surface located at the bottom end of the plow blade and adjacent to the first front blade surface; when the power device drives the rotary plow to rotate forward, the cutting edge formed by the first front blade surface and the first rear blade surface realizes the plowing of the lower soil layer, and the soil plowed up enters the cylindrical cavity through the oblique pushing action of the first front blade surface;
[0010] The transverse projection surface of the cylindrical shell is located within the rotary scraping operation surface formed when the rotary plow rotates.
[0011] Optionally, each of the plow blades includes a secondary blade portion located on the outer peripheral side of the main blade portion; the secondary blade portion is located on the side of the first front blade surface and includes an inner blade surface facing the inner circumference and an outer blade surface facing the outer circumference;
[0012] The intersection of the inner blade surface and the outer blade surface forms a vertical cutting edge that cuts the lower soil layer in the vertical direction when the rotary plow rotates forward.
[0013] Optionally, the cylindrical shell is a cylindrical shell; when the rotary plow rotates, the circle formed by the outermost peripheral side of the secondary blade portion coincides with the edge of the orthographic projection of the cylindrical shell.
[0014] Optionally, a soil bearing plate with water leakage holes on its surface is arranged inside the cylindrical shell;
[0015] The soil bearing plate is connected to the cylindrical shell, and there is a clearance area between the soil bearing plate and the cylindrical shell;
[0016] The first front blade surface is arranged such that when the rotary plow rotates forward, the soil plowed up moves from the central area to the edge area along the first front blade surface and enters the cylindrical cavity through the clearance area.
[0017] Optionally, the main blade portion includes a second front blade surface arranged opposite to the first front blade surface, and a second rear blade surface located at the top end of the plow blade and adjacent to the second front blade surface;
[0018] When the power device drives the rotary plow to rotate in the reverse direction, the cutting edge formed by the cooperation of the second front blade surface and the second rear blade surface realizes the plowing of the upper soil layer, and the soil formed by the plowing moves downward under the oblique pushing action of the second front blade surface.
[0019] Optionally, the columnar shell includes at least two split shells; among the at least two split shells, the first shell is sleeved inside the second shell, and the first shell and the second shell are connected by a first axial telescopic device; when the first axial telescopic device operates, it causes the first shell and the second shell to move relative to each other in the axial direction, so as to increase or decrease the volume of the columnar cavity;
[0020] The pollution enrichment component is connected to the bottom shell of the at least two split shells; or, the pollution enrichment component is arranged in the columnar cavity through a second axial telescopic device, and the second axial telescopic device is connected to the top shell of the at least two split shells.
[0021] Optionally, the first axial telescopic device further includes a detection device for determining the overlapping degree of the at least two split shells; or,
[0022] The columnar shell is internally provided with a distance monitoring device for monitoring the distance of itself relative to 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.
[0023] Optionally, crushing teeth are further arranged at the plow blade edge where the first rake face and the first flank intersect.
[0024] Optionally, the pollutant enrichment membrane is a sulfonated styrene-vinylbenzene copolymer membrane or a polydimethylsiloxane membrane.
[0025] Optionally, the pollution enrichment further includes an upper protection plate and a lower protection plate with uniformly opened holes on the surface;
[0026] The pollutant enrichment membrane is arranged between the upper protection plate and the lower protection plate.
[0027] The soil trace pollutant enrichment device provided by the solution of the embodiment of the present disclosure fills the soil into the columnar cavity through the soil drilling mechanism and covers the pollution enrichment component. Correspondingly, by keeping the soil trace pollutant enrichment device in the foregoing state, the gradual collection of trace pollutants in the soil can be realized. Since the enrichment device is directly in the soil, the solution of the embodiment of the present disclosure can directly collect the collection and diffusion of trace pollutants in the soil caused by dry and wet deposition, sewage irrigation, rainfall, etc., and thus can realize the collection of pollutants in the natural state. Description of the Drawings
[0028] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.
[0029] To more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:
[0030] Figure 1 is the front view of the soil trace pollutant enrichment device provided by the embodiment of the present disclosure;
[0031] Figure 2 is the bottom view of the soil trace pollutant enrichment device provided by the present disclosure;
[0032] Where: 11-columnar shell, 12-pollution enrichment component, 13-soil drilling mechanism, 131-power device, 132-rotating plow, 133-plow blade, 134-first rear blade surface. Detailed implementation manners
[0033] The following will describe the embodiments of the present disclosure in more detail with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Instead, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.
[0034] The term "including" and its variants used herein are open-ended, that is, "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description. In this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
[0035] The embodiment of the present disclosure provides a soil trace pollutant enrichment device that is convenient to apply. The soil trace pollutant enrichment device provided by the embodiment of the present disclosure is deployed in the soil plot of the area to be monitored for a long time, and the enrichment of the trace pollutants to be monitored in the soil is realized through the pollution enrichment component 12 therein. Subsequently, only the pollution enrichment component 12 needs to be extracted with an organic solvent to realize the extraction of the trace pollutants.
[0036] Figure 1 is the external view schematic diagram of the soil trace pollutant enrichment device provided by the embodiment of the present disclosure.Figure 2 This is a longitudinal sectional schematic diagram of the soil trace pollutant enrichment device provided privately in the present disclosure. As Figure 1 and Figure 2 shown, the soil trace pollutant enrichment device provided by the embodiment of the present disclosure includes a columnar shell 11, a pollution enrichment component 12, and a soil drilling mechanism 13.
[0037] The columnar shell 11 is at least open at the lower part, and it forms a columnar cavity for containing soil samples. In a specific implementation, in order to enable the soil samples located in the columnar cavity to communicate with the external soil to achieve full diffusion and exchange of various substances, water-permeable holes can also be opened on the shell of the columnar shell 11. The water-permeable holes can not only allow the passage of liquid water, but also allow the passage of substances such as fine particles.
[0038] The pollution enrichment component 12 is a structure specifically used to achieve the enrichment of trace pollutants. The pollution enrichment component 12 is disposed substantially horizontally in the columnar cavity and includes a pollutant enrichment membrane for achieving the enrichment of trace pollutants. In a specific implementation, the type of the pollutant enrichment membrane can be determined according to the type of trace pollutants to be enriched. When the trace pollutant is a hydrophilic organic matter (such as a hydrophilic antibiotic), the pollutant enrichment membrane can be a sulfonated styrene-vinylbenzene copolymer membrane; when the trace pollutant is a hydrophobic organic matter (such as a hydrophobic antibiotic), the pollutant enrichment membrane can be a polydimethylsiloxane membrane. In order to achieve the enrichment of the above two characteristic pollutants, corresponding types of pollutant enrichment membranes can also be used simultaneously.
[0039] In a specific implementation, in order to protect the pollutant enrichment membrane and prevent the damage of the pollutant enrichment membrane due to external force impact and other reasons, the pollution enrichment component 12 can also include an upper protection plate and a lower protection plate. The upper protection plate and the lower protection plate are both provided with openings on their surfaces. These openings, like the water-permeable holes mentioned above, can allow the passage of substances such as water flow and small particles. The upper protection plate and the lower protection plate can be connected by a snap structure or other condensation structures. The aforementioned pollutant enrichment membrane is disposed between the upper protection plate and the lower protection plate.
[0040] In practical applications, in order to be able to fix the pollution enrichment component 12 at the bottom of the columnar cavity, prevent the pollution enrichment component 12 from tilting due to filling sample soil into the columnar cavity, and at the same time facilitate the removal and placement of the pollution enrichment component 12, a detachable structure can be used to achieve the fixed connection between the pollution enrichment component 12 and the shell of the columnar shell 11 or other direct connection components. For example, a threaded structure can be provided on the pollution enrichment component 12, and the pollution enrichment component 12 can be fixedly connected to the corresponding component through the threaded structure.
[0041] The soil drilling mechanism 13 is a device that enables the entire enrichment device (specifically, the cylindrical shell 11 in the enrichment device) to lie into the soil and fill the shoveled soil into the soil sample. The name "soil drilling mechanism 13" is used here for vivid description. Specifically, it is like an insect quickly digging a hole and drilling into the soil layer.
[0042] As shown in the figure, the soil drilling mechanism 13 is arranged on the lower side of the cylindrical shell 11. The statement that the soil drilling mechanism 13 is arranged on the lower side of the cylindrical shell 11 should be understood in a broad sense. It can be entirely located on the lower side of the cylindrical shell 11, or partially located on the lower side of the cylindrical shell 11 and partially located in the cylindrical cavity formed by the cylindrical shell 11.
[0043] The soil drilling mechanism 13 includes a power device 131 and a rotary plow 132. The power device 131 is used to drive the rotary plow 132 to rotate to perform the plowing operation on the soil layer. Specifically, the rotary tillage plow includes a central connecting body and a plurality of plow blades 133. The central connecting body is directly connected to the output shaft of the power device 131. Each plow blade 133 is connected to the central connecting body and is evenly distributed in the circumferential direction and converges at the central position to form a pointed head. Each plow blade 133 can converge at the central position to form a pointed head in order to ensure that the soil layer located under the central position can be broken by the rotation of the drill bit, so that the plow blade 133 can break and plow up the soil here, avoiding the problem that the entire pollution enrichment component 12 cannot drill into the soil layer due to the soil layer in the center of gravity area not being able to be plowed.
[0044] In the embodiment of the present disclosure, each plow blade 133 includes a main blade part. The main blade part is the main structural part for realizing the plowing of the soil layer, and the main blade part is formed by the main body of the plow blade 133. It includes a first front blade surface inclined on the main body of the plow blade 133 and a first rear blade surface 134 located at the bottom end of the plow blade 133 and adjacent to the first front blade surface. The first front blade surface and the first rear blade surface 134 directly cooperate to form an edge for realizing the plowing of the soil layer. When the power device 131 drives the rotary plow 132 to rotate forward, the edge formed by the first front blade surface and the first rear blade surface 134 realizes the plowing of the lower soil layer. The plowed soil adheres to the first front blade surface and moves upward under the oblique push of the first front blade surface and enters the cylindrical cavity. It should be noted here that due to the limitation of the vertical surface formed by the adjacent soil layer, the plowed soil mainly enters the cylindrical cavity. Correspondingly, the first rear blade surface 134 adheres to and presses against the surface of the soil that has been plowed to continue to realize the plowing of the surface of the subsequent soil layer.
[0045] In the embodiments of the present disclosure, the cross-sectional projection plane of the columnar shell 11 is located within the rotary scraping operation plane formed when the rotary scraping plow 132 rotates. It can be conceived that since the cross-sectional projection plane of the columnar shell 11 is located within the rotary scraping operation plane formed when the rotary scraping plow 132 rotates, after the rotary scraping plow 132 suspends the soil layer to loosen it, under the action of gravity, the enrichment device will surely sink downward into the lower soil layer, causing part of the enrichment device to gradually drill into the soil layer.
[0046] As previously analyzed, during the process of the soil trace pollutant enrichment device drilling into the soil layer, due to the lack of restriction of the cylindrical surface that is not scraped by the plow (or plowed) on its outer peripheral side, the soil that is scraped up mostly enters the columnar cavity under the inclined pushing action of the first front tool face, realizing the filling of the columnar cavity. Since the pollution enrichment component 12 is horizontally arranged at the bottom of the columnar cavity, as the soil fills the columnar cavity, it is then pushed and piled up on the upper side of the pollution enrichment component 12, achieving the goal of burying the pollution enrichment component 12 into the soil. Additionally, since the aforementioned pushing and piling process generally maintains the upper soil layer on top and the lower soil layer below, it can maintain the original distribution of the soil in the depth direction and will not change the distribution of trace pollutants in the soil in the depth direction.
[0047] According to the previous analysis, the soil trace pollutant enrichment device provided by the embodiments of the present disclosure fills the soil into the columnar cavity through the soil drilling mechanism 13 and covers the pollution enrichment component 12. Correspondingly, by maintaining the soil trace pollutant enrichment device in the aforementioned state, the gradual collection of trace pollutants in the soil can be achieved. Since the enrichment device is directly in the soil, adopting the embodiments of the present disclosure can directly collect the collection and diffusion of trace pollutants in the soil caused by reasons such as dry and wet deposition, sewage irrigation, and rainfall, and thus can achieve the collection of pollutants in a natural state. After a certain period of collection of trace pollutants, subsequently, the enrichment device can be taken out from the soil layer, and the pollutant enrichment membrane therein can be taken out. Then, by performing extraction treatment of trace pollutants on the pollutant enrichment membrane, an extraction solvent containing trace pollutants can be obtained for subsequent determination of pollutant data.
[0048] In some specific application scenarios of the present disclosure, the soil to be drilled and plowed may be a relatively soft soil layer such as agricultural land. During the drilling and plowing process, because the soil layer is relatively soft, the soil layer that is scraped by the plow can spread to the surrounding areas and cannot be guided into the columnar cavity.
[0049] To solve the problems mentioned in the previous section, in some embodiments of the present disclosure, each plow blade 133 may include, in addition to the main blade portion, a secondary blade portion located on the outer peripheral side of the main blade portion. The secondary blade portion is located entirely on the side of the main blade portion facing the first front blade surface, and includes an inner blade surface facing the inner circumference and an outer blade surface facing the outer circumference. The inner blade surface and the outer blade surface intersect to form a vertical cutting edge. When the rotary scraping plow 132 rotates forward, the vertical cutting edge scrapes the lower soil layer in the vertical direction, and forms a circumferential limit through the inner blade surface to prevent the lifted soil from spreading to the outer peripheral side, but instead moves towards the cylindrical cavity along the first front blade surface.
[0050] As Figure 1 and Figure 2 shown, more preferably, the cylindrical shell 11 is a cylindrical shell 11, and the outermost peripheral side of the secondary blade portion is coplanar with the outer side surface of the cylindrical shell 11. Correspondingly, when the rotary scraping plow 132 rotates, the circle formed by the outermost peripheral side of the secondary blade portion coincides with the orthographic projection of the cylindrical shell 11. In this way, the sedimentation of the enrichment device in the soil layer can be achieved while keeping the volume of the soil to be rotary tillaged minimized, minimizing the volume of the disturbed soil as much as possible, and reducing the load on the power device 131. In addition, through the protection of the secondary blade portion, the soil layer on the outer peripheral side of the enrichment device can be kept structurally stable, and it is possible to avoid as much as possible the formation of water leakage gaps due to the artificial isolation of the soil inside the enrichment device from the external soil by the enrichment of trace soil pollutants, thus avoiding the problem of not being able to simulate the real situation due to the appearance of water leakage gaps (it should be noted that in most applications, the cylindrical shell 11 is provided with water permeable holes, and it is precisely because of the water permeable holes that the internal soil and the external soil are connected).
[0051] The soil trace pollutant enrichment device provided by the embodiments of the present disclosure can achieve sedimentation into the soil layer only under the action of its own gravity and in cooperation with the scraping action of the rotary scraping plow 132. When the self-weight of the soil trace pollutant enrichment device is small, as the sedimentation depth increases, the compactness of the soil layer decreases, and the subsequent sedimentation rate will gradually decrease or even stop sedimenting.
[0052] To solve the problems in the previous section, it is necessary to increase the downward force applied to the current rotary scraping plow 132. In some embodiments of the present disclosure, a soil bearing plate with water leakage holes on its surface and located below the pollutant enrichment membrane is provided inside the cylindrical shell 11. The soil bearing plate is connected to the cylindrical shell 11, and there is a clearance area between the soil bearing plate and the cylindrical shell 11. The first front blade surface is arranged such that when the rotary scraping plow 132 rotates forward, the soil scraped by it moves from the central area to the edge area along the first front blade surface, enters the cylindrical cavity through the clearance area, and presses on the soil bearing plate, increasing the gravity exerted by the entire enrichment device on the rotary scraping plow 132, thereby enabling the rotary scraping plow 132 to better scrape the lower soil layer, that is, achieving better sedimentation of the entire device.
[0053] In some other embodiments, the enrichment device may also be provided with a force storage impact device, which periodically increases the downward force through the force storage impact device, thereby achieving better sinking of the rotary scraper plough 132.
[0054] The soil trace pollutant enrichment device of the above structure is adopted to fill the scraped soil into the columnar cavity. However, the above structure cannot discharge the soil from the columnar cavity. In order to discharge the soil from the columnar cavity, in some embodiments, the main blade portion also includes a second front blade surface arranged opposite to the first front blade surface, and a second rear blade surface located at the top of the plow 133 and close to the second front blade surface. When the power device 131 drives the rotating scraper 132 to rotate in the opposite direction, the cutting edge formed by the second front blade surface and the second rear blade surface realizes scraping and plowing of the upper soil, and the soil formed by the scraper 132 moves downward under the oblique pushing action of the second front blade surface. As analyzed above, the soil can be discharged from the columnar cavity by gradually pushing the soil downward through the reverse action of the rotating scraper 132.
[0055] In actual applications, after long-term rainwater erosion and the bonding force between soil components, the soil in the columnar cavity may form a relatively stable structure. In order to destroy the stable structure, the columnar shell 11 can also be provided with the aforementioned force storage impact device or a similar vibration device, so as to achieve the destruction of the overall structure of the soil in the columnar cavity through impact vibration, and thus better discharge the soil from the columnar cavity through the rotating scraper 132.
[0056] When performing trace pollutant enrichment operations in actual applications, characteristic data of soil pollutants at different depths need to be monitored as needed. If corresponding models of columnar shells 11 are set for various depths, a lot of waste will be caused. To solve this problem, in some embodiments of the present disclosure, the columnar shell 11 is configured to include at least two split shells. For example, in a specific application, it is configured to include three split shells. In the aforementioned at least two split shells, the first shell is sleeved in the second shell, and the first shell and the second shell are connected by a first axial telescopic device. The action of the first axial telescopic device can achieve relative movement of the shell and the second shell in the axial direction, thereby increasing or decreasing the volume of the columnar cavity. In a specific implementation, the first axial telescopic device can be an electric or hydraulic telescopic rod, or a push rod formed by a connecting rod structure. The embodiments of the present disclosure do not make specific limitations, and the specific structure can refer to the mechanical structure design data.
[0057] Correspondingly, in some embodiments, the pollution enrichment component 12 is connected to the bottom shell of the foregoing multiple split shells, so that the pollution enrichment component 12 is located in the lower part of the columnar cavity. In some other embodiments, the pollution enrichment component 12 is arranged in the columnar cavity through a second axial telescopic device, and the second axial telescopic device is directly connected to the top shell of at least two split shells, or is connected to the structure above the top shell. Through the action of the second axial telescopic device, the pollution enrichment component 12 can be moved to the bottom of the columnar cavity after the volume of the columnar cavity expands.
[0058] Through specific analysis, in some embodiments, the pollution enrichment component 12 (in the case where it includes an upper protective plate and a lower protective plate) is used as a soil bearing plate, and a soil bearing plate is not specifically provided.
[0059] As analyzed above, in specific applications, the landfill depth of the pollutant enrichment membrane needs to be determined according to requirements. Correspondingly, in some embodiment sets, a detection device for detecting the overlapping degree of the split shells is also required.
[0060] In some embodiments, the detection device can be a device for the number of rotation turns of the drive motor of the first drive device or corresponding parameters (such as a resistance sensor or a capacitance sensor related to the overlapping degree).
[0061] In some other embodiments, in the case where the pollution enrichment component 12 is directly connected to the bottom shell. A distance monitoring device for monitoring the distance of itself relative to a reference object can also be provided inside the columnar shell 11. One of the distance monitoring device and the reference object is arranged on the bottom shell of the split shell, and the other is arranged on the top shell of the split shell. In specific implementation, the distance monitoring device and the reference object are substantially coincident in the orthographic projection direction.
[0062] The first rake face and the first junction in the foregoing form the cutting edge of the plow. In practical applications, when the soil layer is relatively dense, the cutting edge cannot achieve a good plowing effect. To solve this problem, in some embodiments, crushing teeth can also be provided at the cutting edge of the plow. The crushing teeth are arranged at an inclined downward angle and can be inserted into the soil layer. When the power device 131 drives the rotary plow 132 to rotate, the crushing teeth damage the surface layer of the soil layer, thereby facilitating better plowing by the cutting edge.
[0063] In specific implementation, in addition to the foregoing structures, the soil trace pollutant enrichment device can also include other components that cooperate with the foregoing structures to achieve corresponding functions. For example, it can include an energy storage battery for storing electric energy, a solar panel for ensuring that the device remains powered during long-term field operation, an electronic control circuit board for realizing the control and status monitoring of various components, and a communication component for realizing communication with a remote data terminal, etc.
[0064] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments described herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A soil trace pollutant enrichment device, characterized in that: It includes a cylindrical shell, a pollution enrichment component and a soil drilling mechanism; The cylindrical shell forms a cylindrical cavity for containing the soil sample; the lower part of the cylindrical cavity is open; The pollution enrichment component is horizontally arranged at the inner bottom of the columnar cavity, and includes a pollution enrichment membrane; The soil drilling mechanism is arranged at the lower side of the cylindrical shell, and includes a power device and a rotary scraper plow; the rotary scraper plow includes a central connecting body and a plurality of plow cutters; the central connecting body is connected to the output shaft of the power device; each of the plow cutters is connected to the central connecting body, is evenly distributed in the circumferential direction, and converges at the center position to form a pointed head; Each of the plow blades includes a main blade portion; the main blade portion includes a first front blade surface that is tilted relative to the plow blade rotation axis, and a first rear blade surface that is located at the bottom of the plow blade and close to the first front blade surface; when the power device drives the rotary scraper plow to rotate forward, the cutting edge formed by the first front blade surface and the first rear blade surface realizes scraping and plowing of the lower soil layer, and the scraped and plowed soil enters the columnar cavity through the oblique pushing action of the first front blade surface; The cross-sectional projection surface of the cylindrical shell is located in the rotary scraping working surface formed when the rotary scraping plough rotates.
2. The device according to claim 1, characterized in that: Each of the plows comprises an auxiliary blade portion located on the outer circumference side of the main blade portion; the auxiliary blade portion is located on the first rake face side and comprises an inner blade face facing the inner side of the circumference and an outer blade face facing the outer side of the circumference; The inner blade surface and the outer blade surface are connected to form a vertical cutting edge that scrapes the lower soil layer in the vertical direction when the rotary scraper plow rotates in the forward direction.
3. The device according to claim 2, characterized in that The columnar shell is a cylindrical shell; When the rotary scraper plough rotates, the circle formed by the outermost peripheral side of the auxiliary blade portion coincides with the orthographic projection edge of the cylindrical shell.
4. The device according to claim 1, characterized in that: A soil bearing plate with water leakage holes on the surface is arranged in the columnar shell; The soil bearing plate is connected to the columnar shell, and there is a clearance area between the soil bearing plate and the columnar shell; The first front blade surface is configured so that when the rotary scraper plough rotates in the forward direction, the soil scraped and ploughed moves from the central area to the edge area along the first front blade surface and enters the columnar cavity through the clearance area.
5. The device according to any one of claims 1 to 4, characterized in that: The main blade portion includes a second rake face disposed opposite to the first rake face, and a second rear face located at the top of the plow and close to the second rake face; When the power device drives the rotary scraper plow to rotate in the opposite direction, the cutting edge formed by the cooperation of the second front blade surface and the second rear blade surface realizes scraping plowing of the upper soil, and the soil formed by the scraper plow moves downward under the oblique pushing action of the second front blade surface.
6. The device according to any one of claims 1 to 4, characterized in that: The columnar shell includes at least two split shells; among the at least two split shells, the first shell is sleeved in the second shell, and the first shell and the second shell are connected by a first axial telescopic device; when the first axial telescopic device is actuated, the first shell and the second shell are relatively moved in the axial direction, so as to increase or decrease the volume of the columnar cavity; The pollution enrichment component is connected to the bottom shell of the at least two split shells; or, the pollution enrichment component is arranged in the columnar cavity through a second axial telescopic device, and the second axial telescopic device is connected to the top shell of the at least two split shells.
7. The device according to claim 6, characterized in that: The first axial telescopic device further comprises a detection device for determining the degree of overlap between the at least two split shells; or, The cylindrical shell has a distance monitoring device inside for monitoring its distance relative to 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 device according to any one of claims 1 to 4, characterized in that: A crushing tooth is also provided at the scraping plow edge where the first front cutting edge and the first rear cutting edge meet.
9. The device according to any one of claims 1 to 4, characterized in that: The pollutant-enriching membrane is a sulfonated styrene-vinylbenzene copolymer membrane or a polydimethylsiloxane membrane.
10. The device according to claim 9, characterized in that: The pollution enrichment also includes an upper protective plate and a lower protective plate both of which have holes on their surfaces; The pollutant enrichment membrane is arranged between the upper protection plate and the lower protection plate.