Wetland soil heavy metal content detector

Abstract

The invention relates to the technical field of heavy metal detectors, in particular to a wetland soil heavy metal content detector which comprises a box body, a box cover plate is rotatably mounted on the side wall of one end of the box body, a spectrum detection module is arranged on the box cover plate, a central controller is mounted in the box body, and the central controller is connected with a spiral device. The spiral device comprises a central rod and a spiral blade; by arranging the cleaning assembly, a worker operates a touch display or a control button to enable a central controller to send a control instruction to a water pump and enable the water pump to perform water pumping work, the water pump pumps out clean water and then discharges the clean water through a water pipe, and the clean water enters a water outlet channel along the water pipe; and meanwhile, the water spraying head II is used for cleaning soil residues on the discharging opening and the discharging sliding plate, so that the final detection accuracy of the heavy metal soil detector is ensured.

Description

Technical Field

[0001] This invention relates to the field of heavy metal detectors, specifically a heavy metal content detector for wetland soil. Background Technology

[0002] Wetlands are natural complexes formed by the interaction of water and land on Earth, and are among the most biodiverse ecological landscapes. Wetlands are generally located in low-lying areas, allowing heavy metals to enter through various pathways, such as surface (subsurface) runoff and atmospheric deposition, making them accumulation sites for heavy metals. Heavy metal pollutants enter wetland soils through irrigation and water replenishment, where they are adsorbed, accumulated, and migrated. This affects the activity and reproduction of animals in the soil, as well as plant growth. Furthermore, heavy metals move with the wetland water, and some food crops and vegetables absorb heavy metals from the wetland soil to varying degrees, thus transferring these heavy metals to humans, birds, and livestock through the food chain, posing health risks. Therefore, it is necessary to regularly test the heavy metal content in wetland soils and conduct ecological risk assessments based on the test data to understand the health status of the wetland ecosystem.

[0003] Existing soil heavy metal detectors include spectroscopic instruments such as atomic absorption spectrometers, fluorescence spectrometers, and X-ray spectrometers, and inductive instruments such as inductively coupled plasma mass spectrometers. Spectroscopic instruments determine heavy metal elements in soil using spectral principles, resulting in smaller instrument sizes and facilitating multi-point sampling and testing in outdoor settings. Inductively coupled plasma mass spectrometers, on the other hand, generate ions through inductively coupled plasma and analyze elements by detecting the ion mass using a mass spectrometer. Compared to inductively coupled plasma mass spectrometers, the detection process is more cumbersome, and the instrument is more complex, making it unsuitable for portable outdoor use.

[0004] However, when using spectrometers in outdoor fields, the high water content of wetland soil can reduce its light transmittance. This can lead to a decrease in the signal intensity of the spectrometer when measuring deeper soil layers, resulting in inaccurate data on heavy metal content in deeper soil layers. Therefore, for heavy metal detection in wetland soil, personnel typically take samples from deeper soil layers first, and then use a spectrometer to detect the heavy metal content in the soil. This allows for effective risk planning and assessment of the wetland soil. Existing heavy metal content detectors first drill holes in wetland soil using a built-in drill bit, then collect samples using a spiral blade mounted on the drill bit. Upon retraction, the spiral blade is reversed to transport the soil sample to the discharge pipe, which then flows into a sample retention cylinder for retention. This completes the wetland soil sampling operation. However, when multiple soil samples are required, this method has the following drawback: due to the viscosity of wetland soil, residues from previous soil sampling remain on the spiral blade and discharge pipe. If the next soil sample is taken at this time, these residues will affect the accuracy of the next sample, impacting subsequent wetland soil risk planning and assessment. Summary of the Invention

[0005] The purpose of this invention is to provide a wetland soil heavy metal content detector to solve the problem that when existing wetland soil heavy metal detectors perform multi-point sampling, the soil sample from the previous sampling is easily left on the sampling device, which affects the heavy metal content in the subsequent sample, resulting in inaccurate soil heavy metal detection data and affecting wetland soil risk planning and assessment.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A wetland soil heavy metal content detector includes a housing. A spectral detection module is installed on the housing cover. The housing cover is rotatably mounted on one side wall of the housing. A touch screen and control buttons are installed on the top of the housing, arranged side by side. A central controller is installed inside the housing. An electric push rod is installed at one end of the central controller and is fixedly installed inside the housing. A motor mount is connected to the push rod of the electric push rod, and a drive motor is installed on the motor mount. The output shaft of the drive motor is connected to a helical device via a coupling. The helical device includes a central rod and helical blades. A base plate is also fixedly installed inside the housing. The base plate is fixedly installed with the electric push rod. The motor mount is slidably mounted on the base plate. A coupling is connected to the output shaft of the drive motor, and one end of the coupling is connected to the helical device. The helical device includes... The system comprises a central rod and helical blades. One end of the coupling is connected to the central rod, and the helical blades are helically mounted on the side wall of the central rod. One end of the central rod has a spike. The housing also includes a sampling channel, with the helical blades located inside the sampling channel. One end of the helical blades has a discharge port, which is connected to a discharge slide plate. The housing also contains multiple sample retention containers located below the discharge slide plate. The bottom of the housing is equipped with a sludge scraping assembly, and the housing also includes a cleaning assembly. The cleaning assembly is electrically connected to the central controller and is located above the helical blades. After the drive motor drives the central rod and helical blades to complete sampling, the central controller controls the cleaning assembly to spray water onto the helical blades and controls the electric push rod and drive motor to extend the helical blades into the sludge scraping assembly to scrape off the diluted mud from the helical blades.

[0008] Preferably, the cleaning assembly includes a water tank for storing clean water. The water tank is installed below the central controller, and a water pump is installed below the water tank. A water pipe extends from one side wall of the water tank. The water pipe is made of a flexible material. The water pump draws clean water from the water tank and discharges it from the water pipe. One end of the water pipe is connected to a water outlet plate. A bearing is installed on the water outlet plate and mounted on a central rod. A water outlet channel is opened inside the water outlet plate. The water pipe communicates with the water outlet channel. Multiple spray heads are installed at one end of the water outlet plate. All spray heads communicate with the water outlet channel. After the clean water is discharged from the water pipe, it enters the water outlet channel and is sprayed out from the spray heads.

[0009] Specifically, after the spiral blades complete a soil sampling operation, to avoid leaving any residue from the previous sampling on the spiral blades, staff use a touch screen or control buttons to activate the central controller, which then sends a control command to the water pump. The pump draws out clean water, which is then discharged through a water pipe. The clean water flows along the water pipe into the outlet channel and is sprayed out from the first spray nozzle to clean the spiral blades. This prevents the residue from the previous sampling from affecting the accuracy of the next sampling and avoids impacting subsequent wetland soil risk planning and assessment.

[0010] Furthermore, staff can adjust the pumping pressure of the water pump by touching the display or using control buttons according to actual work needs. This changes the pressure of the clean water in the outlet channel, thereby changing the spray pressure of the spray head and thus altering the soil cleaning effect, enhancing the cleaning power, and ensuring the cleanliness of the spiral blades.

[0011] Preferably, the plurality of spray heads are arranged in pairs, and each spray head includes a vertical spray head, a left-tilted spray head, and a right-tilted spray head, which are all arranged in pairs in cooperation with each other.

[0012] Specifically, the direction of the first spray head can be installed according to actual working needs, which helps to improve the flexibility of the device. When the first spray head is set vertically, it is used to clean the soil residue on the spiral blades. When the first spray head is set to the left or right tilt, it is used to clean the soil residue on the side wall of the sampling channel. This improves the soil cleaning efficiency and the soil cleaning effect, thus ensuring that the residue of the soil sampled last time cannot remain on the spiral blades.

[0013] Preferably, the center rod has multiple overflow holes on its side wall, and two overflow channels are symmetrically arranged inside the center rod. Both overflow channels are connected to the water outlet channel. The multiple overflow holes are located on the overflow channels, and each of the multiple overflow holes is provided with a mesh-like stainless steel filter screen.

[0014] Specifically, by setting an overflow hole on the central rod, the cleaning effect and cleanliness can be further enhanced. However, the water pressure of the overflow hole is lower than that of the first spray head, serving only a moisturizing function to pre-moisten highly viscous soil. This further improves the subsequent cleaning efficiency of the first spray head. The overflow channel and the outlet channel are interconnected, so clean water flows from the outlet channel into the overflow channel and finally flows out from the overflow hole. Furthermore, to avoid soil blockage of the overflow hole during sampling, a mesh stainless steel filter screen is set on the overflow hole. This reduces the risk of the overflow hole being blocked by the sampled soil, thus ensuring the cleaning effect of residual soil on the spiral blades and preventing mixing between soil samples taken multiple times. This, in turn, ensures the detection accuracy of the heavy metal soil analyzer and improves the accuracy of wetland soil risk planning and assessment.

[0015] Preferably, at least two spray heads are symmetrically arranged at one end of the water outlet plate. The spray heads are either left-tilted or right-tilted and are located at the discharge port.

[0016] Specifically, since soil residue will remain when the sampled soil is discharged from the outlet, a second water spray head is installed at one end of the water outlet plate at the outlet to clean the soil residue at the outlet and on the discharge plate. Similarly, the direction of the second water spray head should be installed according to the actual working requirements. When the second water spray head is set to a left or right tilt, the clean water can flow along the side wall of the outlet or the side wall of the discharge plate to clean, which is beneficial to improving the cleaning effect and thus avoiding the impact of the residue of the previous sampled soil on the accuracy of the next sample, and avoiding the impact on subsequent wetland soil risk planning and assessment.

[0017] Preferably, the sludge scraping assembly is installed at the bottom of the housing. The sludge scraping assembly includes an electric push rod II, and a sludge scraping cover plate is connected to the push rod of the electric push rod II. The sludge scraping cover plate has a U-shaped structure, and a sludge scraping channel is provided on the top of the sludge scraping cover plate. The sludge scraping channel and the spiral blade cooperate with each other to form an arc-shaped structure. A sludge scraping blade I is provided on one side wall of the sludge scraping channel, and a sludge scraping blade II is provided on the other side wall of the sludge scraping channel.

[0018] Specifically, when the spiral blades finish collecting samples and begin cleaning, the electric push rod two first extends, pushing the scraper cover onto the sampling channel. The drive motor then adjusts the spiral blades' position so that the blades' front rotation direction matches the scraper channel. The electric push rod one then pushes the spiral blades downwards. As the spiral blades enter the scraper channel, the drive motor rotates them, and with the combined effort of the electric push rod one, the spiral blades slowly enter the scraper channel. Once inside, scraper blades one clean the upper surface of the spiral blades, scraper blade two cleans the lower surface, and the sides are cleaned by the cleaning component. This comprehensive cleaning of the spiral blades, combined with the scraping component's work followed by the cleaning component's cleaning, improves the cleaning effect and cleanliness, preventing soil residue on the spiral blades and ensuring the accuracy of the heavy metal soil analyzer. This enhances the accuracy of wetland soil risk planning and assessment.

[0019] Preferably, both the first and second scraper blades are made of soft rubber. Rubber material helps increase friction and scraping effect, while also preventing wear on the spiral blades, thus avoiding increased surface roughness and increased adhesion of wetland soil to the blades. The top of the scraper cover has a circular groove, the diameter of which matches the diameter of the spiral blades, facilitating their entry into the scraping channel. The scraping channel and spiral blades form an arc-shaped structure. After rotating in the circular groove, the spiral blades enter the scraper cover along the arc-shaped scraping channel, improving smoothness and ensuring scraping efficiency and effect. This, in turn, ensures the accuracy of the heavy metal soil detector and improves the accuracy of wetland soil risk planning and assessment.

[0020] Preferably, a turntable is provided below the sample retention container, and a slot is provided on the turntable. The sample retention container is placed on the slot, and a turntable motor is provided below the turntable. The output shaft of the turntable motor is connected to the turntable.

[0021] Specifically, after the spiral blades complete one soil sampling, the soil sample is sent into the sample retention container through the discharge port. When sampling is required again, the turntable motor receives a command from the central controller to rotate, thereby driving the turntable to rotate and remove the sampling container that previously contained soil, moving the empty sampling container below the discharge port to facilitate the next soil sampling. By controlling the alternating operation of the sample retention containers through the turntable motor, the mixing of samples during multiple samplings is avoided, which helps to improve the overall intelligence and work efficiency of the equipment.

[0022] Preferably, a first door is installed on one side wall of the housing, and the first door is rotatably mounted on the side wall of the housing via a torsion spring, and the first door is located at the rear end of the sample container; a second door is installed on the other side wall of the housing, and the second door is rotatably mounted on the other side wall of the housing via a torsion spring, and the second door is located at the rear end of the water tank; thus, the testing personnel can open the first door to take out the sample container after sampling, and then put the sample container back in, which facilitates multi-point sampling and ensures sampling efficiency. Furthermore, when the water level in the water tank drops to the set value, the testing personnel can remove the water tank through the second door, which facilitates cleaning the spiral blades after single-point sampling, thus ensuring the cleanliness of the spiral blades and ultimately ensuring the accuracy of the heavy metal soil analyzer.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. By setting up the cleaning components, the staff can control the central controller to send control commands to the water pump by operating the touch screen or control buttons, and the water pump will pump water. After the water pump draws out clean water, it will be discharged through the water pipe. The clean water will enter the water outlet channel along the water pipe and be sprayed out from the first spray head to achieve the cleaning effect of the spiral blades. At the same time, the second spray head is used to clean the soil residue on the discharge port and the discharge plate, thereby ensuring the accuracy of the final heavy metal soil detector.

[0025] 2. By setting up a sludge scraping component, when the cleaning component washes the soil on the spiral blades, the sludge scraping component scrapes off the soil on the spiral blades. Sludge scraper one on the sludge scraping channel cleans the upper surface of the spiral blades, and sludge scraper two cleans the lower surface of the spiral blades. The sides of the spiral blades are cleaned by the cleaning component, thus achieving comprehensive cleaning of the spiral blades. This avoids soil residue from the previous sampling remaining on the sampling device, which could affect the heavy metal content in the subsequent sample. This ensures the detection accuracy of the heavy metal soil detector and improves the accuracy of wetland soil risk planning and assessment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the wetland soil heavy metal content detector of the present invention;

[0027] Figure 2 This is a top view of the wetland soil heavy metal content detector of the present invention;

[0028] Figure 3 for Figure 2 Schematic diagram of cross-section at point AA;

[0029] Figure 4 for Figure 3 A magnified view of the area at point C;

[0030] Figure 5 This is a schematic cross-sectional view of the water outlet plate of the present invention;

[0031] Figure 6 This is a three-dimensional structural diagram of the cooperation between the spiral blade and the mud scraper cover plate of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the mud scraper cover plate of the present invention;

[0033] Figure 8 This is a schematic diagram of the sample retention container and turntable structure of the present invention;

[0034] Figure 9 for Figure 8 Schematic diagram of cross-section at point BB.

[0035] In the diagram: 1. Box body; 2. Box cover; 3. Touch screen display; 4. Control buttons; 5. Central controller; 6. Electric push rod 1; 7. Base plate; 8. Motor base; 9. Drive motor; 10. Coupling; 11. Center rod; 12. Spiral blade; 13. Spike; 14. Sampling channel; 15. Discharge port; 16. Discharge slide plate; 17. Sample container; 18. Water tank; 19. Water pump; 20. Water pipe; 21. Water outlet plate; 22. Bearing; 23. Water outlet channel; 24. Vertical water spray. 25. Left-tilted water spray head 1; 26. Right-tilted water spray head 1; 27. Overflow hole; 28. Overflow channel; 29. ​​Left-tilted water spray head 2; 30. Right-tilted water spray head 2; 31. Electric push rod 2; 32. Sludge scraper cover; 33. Sludge scraper channel; 34. Sludge scraper blade 1; 35. Sludge scraper blade 2; 36. Circular groove; 37. Turntable; 38. Groove opening; 39. Turntable motor; 40. Box door 1; 41. Torsion spring 1; 42. Box door 2; 43. Torsion spring 2; 44. Spectral detection module. Detailed Implementation

[0036] Please see Figures 1 to 9 This invention provides a wetland soil heavy metal content detector, the technical solution of which is as follows:

[0037] A wetland soil heavy metal content detector includes a housing 1. A cover plate 2 is rotatably mounted on one side wall of the housing 1. A spectral detection module 44 is installed on the cover plate 2. A touch screen display 3 and control buttons 4 are installed on the top of the housing 1, arranged side by side. A central controller 5 is installed inside the housing 1. An electric push rod 6 is installed at one end of the central controller 5. A base plate 7 is provided at the bottom of the electric push rod 6. The electric push rod 6 is mounted on the base plate 7. A motor mount 8 is connected to the push rod of the electric push rod 6. A drive motor 9 is mounted on the motor mount 8 and slidably mounted on the base plate 7. A coupling 10 is connected to the output shaft of the drive motor 9. A spiral device is connected to one end of the coupling 10. The spiral device includes a central rod 11 and spiral blades 12. One end of the coupling 10 is connected to the central rod. On the central rod 11, the spiral blade 12 is spirally mounted on the side wall of the central rod 11. One end of the central rod 11 is provided with a spike 13 to facilitate the spiral blade 12 to penetrate into the soil. The housing 1 is also provided with a sampling channel 14, and the spiral blade 12 is located inside the sampling channel 14. One end of the spiral blade 12 is provided with a discharge port 15, and a discharge slide plate 16 is connected to the discharge port 15. The housing 1 is also provided with multiple sample retention tanks 17, which are located below the discharge slide plate 16. A cleaning component is installed at the lower end of the central controller 5. When the drive motor 9 drives the spiral blade 12 to complete the sampling, the cleaning mechanism sprays water to clean the spiral blade 12. A mud scraping component is also provided at the bottom of the housing 1. When the cleaning mechanism sprays water to clean the spiral blade 12, the mud scraping component and the cleaning component cooperate to scrape mud from the spiral blade 12.

[0038] To improve the cleaning effect of the spiral blades 12, the sludge scraping assembly first scrapes the sludge from the spiral blades 12, and then the cleaning assembly cleans the spiral blades 12 to avoid soil residue on the spiral blades 12. Figure 3 , Figure 6 , Figure 7 As shown, the mud scraping assembly is installed at the bottom of the housing 1. The mud scraping assembly includes an electric push rod 31. A mud scraping cover plate 32 is connected to the push rod of the electric push rod 31. The mud scraping cover plate 32 has a U-shaped structure. A mud scraping channel 33 is opened at the top of the mud scraping cover plate 32. The mud scraping channel 33 and the spiral blade 12 cooperate with each other to form an arc-shaped structure. A mud scraping blade 34 is provided on one side wall of the mud scraping channel 33, and a mud scraping blade 35 is provided on the other side wall of the mud scraping channel 33.

[0039] During operation, after the spiral blade 12 completes soil collection, the piston of the electric push rod 6 retracts, causing the spiral blade 12 to return to the sampling channel and be positioned above the mud scraper cover 32. First, the electric push rod 31 extends, pushing the mud scraper cover 32 out onto the sampling channel. Then, the drive motor 9 adjusts the rotational position of the spiral blade 12, aligning its front end rotation with the mud scraper channel 33. The electric push rod 6 then pushes the spiral blade 12 downwards. When the spiral blade 12 enters the mud scraper channel 33, the drive motor 9 begins to rotate the spiral blade 12. With the coordinated propulsion of the electric push rod 6, the spiral blade 12 slowly enters the sludge scraping channel 33. After the spiral blade 12 enters the sludge scraping channel 33, the sludge scraping blade 34 on the sludge scraping channel 33 scrapes and cleans the upper surface of the spiral blade 12, and the sludge scraping blade 35 scrapes and cleans the lower surface of the spiral blade 12. The sides of the spiral blade 12 are cleaned by the cleaning component, thus achieving a comprehensive cleaning of the spiral blade 12. Furthermore, the cleaning component cleans the spiral blade 12 after the sludge scraping component has performed the sludge scraping work, which helps to improve the cleaning effect and cleanliness, and avoids the residue of sampled soil on the spiral blade 12.

[0040] Furthermore, both scraper blade 34 and scraper blade 35 are made of soft rubber. The rubber material helps to increase friction, improve the scraping effect, and prevent the spiral blade 12 from being worn. The top of the scraper cover plate 32 is provided with a circular groove 36. The diameter of the circular groove 36 matches the spiral blade 12 and facilitates the entry of the spiral blade 12 into the scraping channel 33. The scraping channel 33 and the spiral blade 12 are in an arc shape. After rotating in the circular groove 36, the spiral blade 12 enters the scraper cover plate 32 along the arc-shaped scraping channel 33, which improves the smoothness of passage.

[0041] After the sludge scraping is completed, the spiral blades 12 rotate and retract into the sampling channel, the sludge scraper cover 32 is removed, and the sludge scraper cover 32 is retracted to the bottom of the housing 1. Then, the spiral blades 12 are rinsed with clean water. Figure 3 , Figure 5As shown, the cleaning assembly includes a water tank 18 for storing clean water. The water tank 18 is installed below the central controller 5. A water pump 19 is installed below the water tank 18. A water pipe 20 extends from one side wall of the water tank 18. The water pipe 20 is made of flexible material. The water pump 19 pumps the clean water inside the water tank 18 and discharges it from the water pipe 20. One end of the water pipe 20 is connected to a water outlet plate 21. A bearing 22 is installed on the water outlet plate 21 and is mounted on the central rod 11. When the spiral blade 12 rotates, the bearing 22 rotates with the central rod 11, so that the water outlet plate 21 can remain stationary in the sampling channel. A water outlet channel 23 is opened inside the water outlet plate 21. The water pipe 20 is connected to the water outlet channel 23. Multiple water nozzles are installed at one end of the water outlet plate 21. All multiple water nozzles are connected to the water outlet channel 23. After the clean water is discharged from the water pipe 20, it enters the water outlet channel 23 and is sprayed out from the water nozzles.

[0042] During operation, after the spiral blades 12 complete one soil sampling, to avoid residue from the previous sampling on the spiral blades 12, the operator uses the touch display 3 or control buttons 4 to send a control command to the central controller 5 to the water pump 19, causing the water pump 19 to pump water. The water pump 19 draws out clean water and discharges it through the water pipe 20. The clean water enters the water outlet channel 23 along the water pipe 20 and is sprayed out from the first spray head to achieve the cleaning effect of the spiral blades 12. This avoids the residue from the previous sampling affecting the accuracy of the next sampling and avoids impacting subsequent wetland soil risk planning and assessment. Furthermore, the operator can adjust the pumping pressure of the water pump 19 according to actual work needs through the touch display 3 or control buttons 4, thereby changing the pressure of the clean water in the water outlet channel 23 and thus changing the spray pressure of the spray head to change the soil cleaning effect and enhance the cleaning power.

[0043] Furthermore, such as Figure 5 As shown, multiple spray heads are arranged in pairs. Each spray head includes a vertical spray head 24, a left-tilted spray head 25, and a right-tilted spray head 26. These three spray heads are arranged in pairs to cooperate with each other. The direction of the spray heads can be adjusted according to actual working needs, which improves the flexibility of the device. When the spray heads are set vertically, they are used to clean soil residue on the spiral blades 12. When the spray heads are set to the left or right tilt, they are used to clean soil residue on the side wall of the sampling channel 14. This improves both the soil cleaning efficiency and the soil cleaning effect.

[0044] Furthermore, such as Figure 4As shown, multiple overflow holes 27 are provided on the side wall of the central rod 11, and two overflow channels 28 are symmetrically arranged inside the central rod 11. Both overflow channels 28 are connected to the water outlet channel 23. The multiple overflow holes 27 are located on the overflow channels 28, and each of the multiple overflow holes 27 is equipped with a mesh-like stainless steel filter screen. By setting overflow holes 27 on the central rod 11, it is beneficial to further increase the cleaning effect and cleanliness. However, the water pressure of the overflow holes 27 is lower than that of the first spray head, and it only plays a moisturizing role, so as to pre-moisten the soil with high viscosity, thereby further improving the subsequent cleaning efficiency of the first spray head. The overflow channels 28 are connected to the water outlet channel 23, so clean water flows from the water outlet channel 23 into the overflow channel 28 and finally flows out from the overflow holes 27. Furthermore, in order to avoid the overflow holes 27 being blocked by soil during the sampling process, the mesh-like stainless steel filter screen on the overflow holes 27 can reduce the risk of the overflow holes 27 being blocked by the sampled soil.

[0045] like Figure 7 As shown, at least two spray heads are symmetrically arranged at one end of the water outlet plate 21. The spray heads are either left-tilted spray head 29 or right-tilted spray head 30, which are located on the discharge port 15. Since soil residue will remain when the sampled soil is discharged from the discharge port 15, spray heads are set at one end of the water outlet plate 21 located at the discharge port 15 to facilitate the cleaning of soil residue on the discharge port 15 and the discharge slide plate. Similarly, the direction of the spray heads should be installed according to the actual working requirements. When the spray heads are set to the left or right tilt direction, the clean water can flow along the side wall of the discharge port 15 or the side wall of the discharge slide plate 16 to clean, which is beneficial to improving the cleaning effect. The wastewater after cleaning flows into the sample retention tank 17, which can be removed and cleaned by the staff later.

[0046] like Figure 4 , Figure 5 As shown, a turntable 37 is provided below the sample retention tank 17, and a slot 38 is opened on the turntable 37. The sample retention tank 17 is placed on the slot 38. A turntable motor 39 is provided below the turntable 37, and the output shaft of the turntable motor 39 is connected to the turntable 37. After the spiral blade 12 completes a soil sampling, the soil sample is sent into the sample retention tank 17 through the discharge port 15. When sampling is required again, the turntable motor 39 receives the instruction from the central controller 5 to rotate, thereby driving the turntable 37 to rotate, removing the sampling tank that previously contained soil, and rotating the empty sampling tank below the discharge port 15 to facilitate the next soil sampling. The alternating operation of the sample retention tank 17 controlled by the turntable motor 39 helps to improve the overall intelligence level and work efficiency of the equipment.

[0047] like Figure 2As shown, a door 40 is installed on one side wall of the housing 1. The door 40 is rotatably mounted on the side wall of the housing 1 via a torsion spring 41, and is located at the rear end of the sample container 17. When all the sample containers 17 on the turntable 37 are full, the central controller 5 issues a command displayed on the touch screen 3 to prompt the staff. The staff can then open the door 40 to remove the sample container 17 and place a new sample container 17 in for sampling. A second door 42 is installed on the other side wall of the housing 1. The second door 42 is rotatably mounted on the side wall of the housing 1 via a torsion spring 43. Installed on the other side wall of the housing 1, and with the second door 42 located at the rear of the water tank 18, when the clean water inside the water tank 18 is used up, the central controller 5 issues a command displayed on the touch screen 3 to prompt the staff. The water level inside the water tank 18 can be determined by installing a water level sensor according to existing technology. As long as the central controller 5 can receive the water level signal according to actual production needs, it will not be elaborated on here. The staff can then open the second door 42 to take out the sample container 17. After adding clean water, the second door 42 is closed to facilitate the cleaning work again.

[0048] Working principle: After the spiral blade 12 completes soil collection, the piston of the electric push rod 6 retracts, causing the spiral blade 12 to retract into the sampling channel and be positioned above the mud scraper cover 32. First, the electric push rod 31 extends, pushing the mud scraper cover 32 out onto the sampling channel. Then, the drive motor 9 drives the spiral blade 12 to adjust its rotational position, that is, after the rotation direction of the front end of the spiral blade 12 matches the mud scraper channel 33, the electric push rod 6 begins to push the spiral blade 12 downwards. When the spiral blades 12 begin to enter the scraping channel 33, the drive motor 9 starts to drive the spiral blades 12 to rotate. With the cooperation of the electric push rod 6, the spiral blades 12 slowly enter the scraping channel 33. After the spiral blades 12 enter the scraping channel 33, the scraper blades 34 on the scraping channel 33 scrape and clean the upper surface of the spiral blades 12, and the scraper blades 35 scrape and clean the lower surface of the spiral blades 12. Then, the spiral blades 12 are rinsed with clean water. The operator can control this process by operating the touch display 3 or... Control button 4 causes the central controller 5 to send control commands to the water pump 19, causing the water pump 19 to pump water. The water pump 19 draws out clean water and discharges it through the water pipe 20. The clean water enters the water outlet channel 23 through the water pipe 20 and is sprayed out from the spray head to achieve the cleaning effect of the spiral blades 12. The operator can adjust the pumping pressure of the water pump 19 according to the actual work needs by touching the display 3 or controlling button 4, so as to change the pressure of the clean water in the water outlet channel 23, thereby realizing the spray head When the spraying pressure changes, after the sludge scraping work is completed, the spiral blade 12 rotates and retracts into the sampling channel 14, and the sludge scraper cover 32 is removed. The electric push rod 31 drives the sludge scraper cover 32 to retract to the bottom of the box 1. The operator can use the touch display 3 or the control button 4 to make the central controller 5 send a control command to the water pump 19, and make the water pump 19 stop pumping water, and stop the spraying of the vertical spray head 24, the left tilt spray head 25, the right tilt spray head 26, the left tilt spray head 29, and the right tilt spray head 20.

[0049] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A wetland soil heavy metal content detector, comprising a housing (1), a cover plate (2) rotatably mounted on one side wall of the housing (1), a spectral detection module (44) provided on the cover plate (2), a central controller (5) installed inside the housing (1), the central controller (5) electrically connected to an electric push rod (6), the electric push rod (6) fixedly installed inside the housing (1), a motor base (8) connected to the push rod of the electric push rod (6), a drive motor (9) mounted on the motor base (8), the output shaft of the drive motor (9) connected to a spiral device via a coupling (10), the spiral device comprising a central rod (11) and spiral blades (12), the spiral blades (12) fixedly installed on the side wall of the central rod (11), characterized in that, The housing (1) is also equipped with a cleaning component, and the bottom of the housing (1) is also equipped with a sludge scraping component. The cleaning component is electrically connected to the central controller (5), and the cleaning component is located on the upper side of the spiral blade (12). When the drive motor (9) drives the center rod (11) and the spiral blade (12) to complete the sampling, the central controller (5) controls the cleaning component to spray water on the spiral blade (12), and controls the electric push rod (6) and the drive motor (9) to extend the spiral blade (12) into the sludge scraping component.

2. The wetland soil heavy metal content detector according to claim 2, characterized in that: The cleaning assembly includes a water tank (18) for storing clean water. The water tank (18) is installed below the central controller (5). A water pump (19) is installed below the water tank (18). A water pipe (20) extends from one side wall of the water tank (18). The water pipe (20) is made of flexible material. One end of the water pipe (20) is connected to a water outlet plate (21). A bearing (22) is provided on the water outlet plate (21). The bearing (22) is installed on the central rod (11). A water outlet channel (23) is opened inside the water outlet plate (21). The water pipe (20) is connected to the water outlet channel (23). Multiple water spray heads are provided at one end of the water outlet plate (21). All of the multiple water spray heads are connected to the water outlet channel (23).

3. The wetland soil heavy metal content detector according to claim 2, characterized in that: The scraper assembly is installed at the bottom of the housing (1). The scraper assembly includes an electric push rod two (31). A scraper cover plate (32) is connected to the push rod of the electric push rod two (31). The scraper cover plate (32) has a U-shaped structure. A scraper channel (33) is opened at the top of the scraper cover plate (32). The scraper channel (33) has an arc-shaped structure that cooperates with the spiral blade (12). A scraper blade one (34) is provided on one side wall of the scraper channel (33), and a scraper blade two (35) is provided on the other side wall of the scraper channel (33).

4. The wetland soil heavy metal content detector according to claim 2, characterized in that: The multiple spray heads are arranged in pairs. Each spray head includes a vertical spray head (24), a left-tilted spray head (25), and a right-tilted spray head (26). The vertical spray head (24), the left-tilted spray head (25), and the right-tilted spray head (26) are all arranged in pairs to cooperate with each other.

5. The wetland soil heavy metal content detector according to claim 4, characterized in that: The center rod (11) has multiple overflow holes (27) on its side wall. The center rod (11) has two overflow channels (28) symmetrically arranged inside. Both overflow channels (28) are connected to the water outlet channel (23). The multiple overflow holes (27) are located on the overflow channels (28). Each of the multiple overflow holes (27) is provided with a mesh stainless steel filter screen.

6. The wetland soil heavy metal content detector according to claim 2, characterized in that: At least two spray heads are symmetrically arranged at one end of the water outlet plate (21). The spray heads are either left-tilted spray heads (29) or right-tilted spray heads (30). The left-tilted spray heads (29) or right-tilted spray heads (30) are located on the discharge port (15).

7. The wetland soil heavy metal content detector according to claim 3, characterized in that: Both the first scraper blade (34) and the second scraper blade (35) are made of soft rubber material, and the top of the scraper cover plate (32) is provided with a circular groove (36).

8. The wetland soil heavy metal content detector according to claim 1, characterized in that: A turntable (37) is provided below the sample container (17), and a slot (38) is provided on the turntable (37). The sample container (17) is placed on the slot (38). A turntable motor (39) is provided below the turntable (37), and the output shaft of the turntable motor (39) is connected to the turntable (37).

9. The wetland soil heavy metal content detector according to claim 8, characterized in that: A door (40) is installed on one side wall of the box (1). The door (40) is rotatably installed on the side wall of the box (1) by a torsion spring (41), and the door (40) is located at the rear end of the sample container (17). A door (42) is installed on the other side wall of the box (1). The door (42) is rotatably installed on the other side wall of the box (1) by a torsion spring (43), and the door (42) is located at the rear end of the water tank (18).

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