CN116399672A - Extraction element for heavy metal content in soil - Google Patents
Extraction element for heavy metal content in soil Download PDFInfo
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- CN116399672A CN116399672A CN202310664930.6A CN202310664930A CN116399672A CN 116399672 A CN116399672 A CN 116399672A CN 202310664930 A CN202310664930 A CN 202310664930A CN 116399672 A CN116399672 A CN 116399672A
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- 239000002689 soil Substances 0.000 title claims abstract description 53
- 238000000605 extraction Methods 0.000 title claims abstract description 44
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/30—Driving mechanisms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/286—Feeding or discharge
- B02C2013/28609—Discharge means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
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- Environmental & Geological Engineering (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention belongs to the technical field of extraction devices, in particular to an extraction device for heavy metal content in soil, which aims at the problems that the existing extraction device is not provided with an auxiliary stirring and conveying device when extracting and detecting components in soil, the extraction process is inconvenient, and agglomerated massive soil and the like reduce the extraction efficiency.
Description
Technical Field
The invention relates to the technical field of extraction devices, in particular to an extraction device for heavy metal content in soil.
Background
Although the traditional physical restoration means such as soil dressing, soil replacement or deep ploughing and soil turning are high in treatment speed and remarkable in effect, polluted soil is not treated, and heavy metals are deeply ploughed into the soil or transferred to other places. The method for jointly repairing the plants or microorganisms can be used for extracting the heavy metals, but has the advantages of long treatment period, large heavy metal residue and relatively high cost. Although the solidification/stabilization technology can be used for fixing heavy metals in soil and reducing the bioavailability and mobility of the heavy metals, the heavy metals are applicable to a narrow type of soil and are not applicable to farmlands or sites planted after restoration. The ectopic soil leaching/extraction and restoration technology is a physical-chemical separation technology, can effectively remove pollutants from soil, reduces potential risks of groundwater pollution, has high restoration efficiency and low treatment cost, is easy to realize system control and waste reduction, and becomes one of hot spot directions of the research of the rapid restoration technology of polluted soil, so that an extraction device for heavy metal content in soil is needed.
Existing extraction element:
patent document 201710471107.8 discloses a prosthetic devices of heavy metal in extraction soil, including soil sample processing system, soil sample processing system's exit linkage has ultrasonic wave to strengthen extraction system, and ultrasonic wave strengthens extraction system's play mud mouth and is connected with mud-water separation system, and ultrasonic wave strengthens extraction system's delivery port and is connected with extract treatment recycling system, and mud-water separation system's reclaimed water is connected to extract treatment recycling system's entrance, and extract treatment recycling system's reclaimed water is connected to ultrasonic wave and strengthens extraction system's water inlet.
It can be seen that the existing extraction device does not have an auxiliary stirring and conveying device when extracting and detecting the components in the soil, the extraction process is inconvenient, and the extraction efficiency is reduced due to the agglomerated massive soil and the like.
Disclosure of Invention
The invention aims to solve the defects that the existing extraction device is not provided with an auxiliary stirring and conveying device when extracting and detecting components in soil, the extraction process is inconvenient, and the extraction efficiency is reduced due to agglomerated massive soil and the like.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides an extraction element for heavy metal content in soil, comprises a box body, the bottom symmetry fixed mounting of box has two supports, the bottom movable mounting of two supports has mobile device, the pan feeding mouth has been seted up at the top of box, the discharge gate has been seted up to one side of box, fixed mounting has the diaphragm on one of two supports, fixed mounting has the extraction box on the diaphragm, fixed mounting has same baffle on extraction box and the box, fixed mounting has the filter plate in the box, the material conveying pole is installed in the box in the rotation, the top slidable mounting of box has driving motor, fixed mounting has the drive shaft on driving motor's the output shaft, fixed mounting has a plurality of puddler on the drive shaft, fixed mounting has drive arrangement on the drive shaft, fixed mounting has the fender bracket on the top inner wall of box, the transmission is connected with the transmission shaft in the drive shaft, slidable mounting has the slider on the one side inner wall of box, rotatable mounting has the actuating lever on the slider, slidable mounting has the transfer lever to transmit with the material conveying lever, transmission connection has the connecting axle on the transfer lever, the opposite side fixed mounting has the gear box, install the baffle on the other side fixed mounting has the baffle on the drive lever.
Preferably, the moving device comprises a plurality of guide wheels, and the guide wheels are movably arranged at the bottoms of the two brackets respectively.
Preferably, two telescopic rods are symmetrically and fixedly arranged at the top of the box body, fixing plates are fixedly arranged on the two telescopic rods, the same mounting box is fixedly arranged on the two fixing plates, and the driving motor is fixedly arranged in the mounting box.
Preferably, the driving device comprises a rotary drum, a circulating groove and a circular ring, wherein the rotary drum is fixedly arranged on the driving shaft, the circulating groove is formed in the rotary drum, the circular ring is movably arranged in the circulating groove, and the circular ring is fixedly connected with the protection frame.
Preferably, a first driving gear is fixedly arranged on the driving shaft, a first transmission gear is fixedly arranged on the transmission shaft, and the first driving gear is meshed with the first transmission gear.
Preferably, a second driving gear is fixedly arranged on the transmission shaft, a second transmission gear is fixedly arranged on the driving rod, and the second driving gear is meshed with the second transmission gear.
Preferably, a third driving gear is fixedly arranged on the transmission rod, a third transmission gear is fixedly arranged on the material conveying rod, and the third driving gear is meshed with the third transmission gear.
Preferably, the transmission rod is fixedly provided with a fourth driving gear, the connecting shaft is fixedly provided with a fourth driving gear, and the fourth driving gear is meshed with the fourth driving gear.
Preferably, the striking device comprises an elliptic plate, the elliptic plate is slidably mounted on the mounting rod, a sliding groove is formed in the elliptic plate, a limiting rod is fixedly mounted in the sliding groove, a supporting rod is slidably mounted on the limiting rod, the supporting rod is fixedly connected with the mounting rod, and a pressure spring is fixedly mounted in the sliding groove.
In the invention, the extraction device for the heavy metal content in the soil has the beneficial effects that:
(1) The box body, the bracket and the guide wheels are arranged, so that the whole device can be conveniently moved through the guide wheels, and the use is convenient;
(2) According to the scheme, the feeding hole, the discharging hole, the transverse plate, the extraction box, the guide chute, the filter plate, the material conveying rod, the telescopic rod, the fixing plate, the mounting box, the driving motor, the driving shaft, the stirring rod, the rotary drum, the circulating groove, the circular ring, the protection frame, the transmission shaft, the first driving gear, the first transmission gear, the sliding block, the driving rod, the second driving gear, the second transmission gear, the transmission rod, the third driving gear, the third transmission gear, the connecting shaft, the fourth driving gear, the gear accelerating box, the mounting rod, the elliptic plate, the sliding chute, the limiting rod, the supporting rod, the pressure spring and the baffle are arranged, the driving motor can drive the driving shaft to rotate, so that soil can be stirred and crushed, the crushed soil can be conveyed into the extraction box through the material conveying rod, the mounting rod drives the elliptic plate to rotate and strike the baffle to achieve a vibration effect, and the blanking can be assisted.
The invention can stir and crush the soil when extracting the components in the soil, thereby avoiding the influence of massive soil on the extraction efficiency.
Drawings
FIG. 1 is a schematic cross-sectional view of an extraction device for heavy metal content in soil according to the present invention;
fig. 2 is a schematic perspective view of an extracting device for heavy metal content in soil according to the present invention;
fig. 3 is an enlarged schematic view of a portion a of fig. 1 of an extracting device for heavy metal content in soil according to the present invention;
fig. 4 is an enlarged schematic view of a portion B of fig. 1 of an extracting device for heavy metal content in soil according to the present invention;
fig. 5 is an enlarged schematic view of a part C of fig. 1 of an extracting device for heavy metal content in soil according to the present invention;
fig. 6 is an enlarged schematic view of a part D of fig. 1 of an extracting device for heavy metal content in soil according to the present invention.
In the figure: 1. a case; 2. a bracket; 3. a guide wheel; 4. a feed inlet; 5. a discharge port; 6. a cross plate; 7. an extraction box; 8. a guide groove; 9. a filter plate; 10. a material conveying rod; 11. a telescopic rod; 12. a fixing plate; 13. a mounting box; 14. a driving motor; 15. a drive shaft; 16. a stirring rod; 17. a rotating drum; 18. a circulation tank; 19. a circular ring; 20. a protective frame; 21. a transmission shaft; 22. a first drive gear; 23. a first transmission gear; 24. a slide block; 25. a driving rod; 26. a second drive gear; 27. a second transmission gear; 28. a transmission rod; 29. a third drive gear; 30. a third transmission gear; 31. a connecting shaft; 32. a fourth drive gear; 33. a fourth transmission gear; 34. a gear acceleration box; 35. a mounting rod; 36. an elliptical plate; 37. a chute; 38. a limit rod; 39. a support rod; 40. a pressure spring; 41. and a baffle.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
Referring to fig. 1, an extracting device for heavy metal content in soil comprises a box body 1, two brackets 2 are symmetrically and fixedly installed at the bottom of the box body 1, a moving device is movably installed at the bottom of the two brackets 2, a feeding opening 4 is formed in the top of the box body 1, a discharging opening 5 is formed in one side of the box body 1, a transverse plate 6 is fixedly installed on one bracket 2 of the two brackets 2, an extracting box 7 is fixedly installed on the transverse plate 6, the extracting box 7 and the box body 1 are fixedly installed with the same guide chute 8, a filter plate 9 is fixedly installed in the box body 1, a material conveying rod 10 is rotatably installed in the box body 1, a driving motor 14 is slidably installed at the top of the box body 1, a driving shaft 15 is fixedly installed on an output shaft of the driving motor 14, a plurality of stirring rods 16 are fixedly installed on the driving shaft 15, a driving device is fixedly installed on the inner wall of the top of the box body 1, a driving shaft 20 is fixedly installed on the driving shaft 15, a sliding block 24 is installed on the inner wall of one side of the box body 1, a driving rod 25 is rotatably installed on the sliding block 24, a driving rod 25 is fixedly installed on the driving rod 25 and is connected with a plurality of guide rods 28, a plurality of guide rods 35 are fixedly installed on the other side of the driving rods 28 and are fixedly installed on the driving rod 35, a plurality of guide rods are fixedly installed on the driving wheels 35 are fixedly installed on the driving wheels 3, and are fixedly installed on the other side of the driving wheels 35, and are fixedly installed on the driving wheels 35, and are fixedly connected with the driving wheels are fixedly installed on the driving wheels, and connected with the driving rods 2, and are fixedly installed.
Referring to fig. 2, the structural features of the device are shown in perspective view.
Referring to fig. 3, two telescopic rods 11 are symmetrically and fixedly installed at the top of the box body 1, fixing plates 12 are fixedly installed on the two telescopic rods 11, the same installation box 13 is fixedly installed on the two fixing plates 12, and a driving motor 14 is fixedly installed in the installation box 13, so that stable operation of the driving motor 14 is ensured.
Referring to fig. 4, a second driving gear 26 is fixedly installed on the driving shaft 21, a second driving gear 27 is fixedly installed on the driving rod 25, the second driving gear 26 is engaged with the second driving gear 27, a fourth driving gear 32 is fixedly installed on the driving rod 28, a fourth driving gear 33 is fixedly installed on the connecting shaft 31, and the fourth driving gear 32 is engaged with the fourth driving gear 33, so that the driving shaft 21 can drive the driving rod 25 to rotate, and the driving rod 28 can drive the connecting shaft 31 to rotate.
Referring to fig. 5, a third driving gear 29 is fixedly installed on the driving rod 28, and a third driving gear 30 is fixedly installed on the feeding rod 10, and the third driving gear 29 is engaged with the third driving gear 30, so that the driving rod 28 can drive the feeding rod 10 to rotate.
Referring to fig. 6, the striking device includes an elliptic plate 36, the elliptic plate 36 is slidably mounted on a mounting rod 35, a chute 37 is formed in the elliptic plate 36, a limit rod 38 is fixedly mounted in the chute 37, a support rod 39 is slidably mounted on the limit rod 38, the support rod 39 is fixedly connected with the mounting rod 35, a compression spring 40 is fixedly mounted in the chute 37, and a baffle 41 can be struck to achieve vibration effect to assist in blanking.
In this embodiment, when the device is used, the required soil is poured into the box body 1 through the feeding hole 4, the driving motor 14 is started, the driving motor 14 drives the driving shaft 15 to rotate, the driving shaft 15 drives the stirring rods 16 to rotate, so that the soil can be stirred and crushed, meanwhile, the driving shaft 15 drives the rotary drum 17 to rotate, the rotary drum 17 drives the driving motor 14 to reciprocate up and down through the circulation groove 18 and the circular ring 19, so that the stirring crushing effect can be further improved, meanwhile, the driving shaft 15 drives the transmission shaft 21 to rotate, the transmission shaft 21 drives the driving rod 25 to rotate, the driving rod 25 drives the transmission rod 28 to rotate, the transmission rod 28 drives the material conveying rod 10 to rotate, the crushed soil can be conveyed, the transmission rod 28 drives the connecting shaft 31 to rotate, the connecting shaft 31 drives the mounting rod 35 to rotate through the gear accelerating box 34, the mounting rod 35 drives the elliptic plate 36 to rotate, the baffle 41 can be hit, the blanking can be assisted, and the sliding soil after crushing is conveyed into the extracting box 7 to extract and separate components.
Example two
The difference between this embodiment and the first embodiment is that: the two brackets 2 can be additionally provided with a plurality of buckles, so that the stability in use is ensured, the extracted components are analyzed and compared, and the soil dosage is not required to be too large.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides an extraction element for heavy metal content in soil, which comprises a box body (1), a serial communication port, the bottom symmetry fixed mounting of box (1) has two supports (2), the bottom movable mounting of two supports (2) has mobile device, pan feeding mouth (4) have been seted up at the top of box (1), discharge gate (5) have been seted up to one side of box (1), fixed mounting has diaphragm (6) on one support (2) in two supports (2), fixed mounting has extraction box (7) on diaphragm (6), fixed mounting has same baffle box (8) on extraction box (7) and box (1), fixed mounting has filter plate (9) in box (1), material conveying pole (10) are installed in box (1) internal rotation, the top slidable mounting of box (1) has driving motor (14), fixed mounting has driving shaft (15) on the output shaft of driving motor (14), fixed mounting has a plurality of puddler (16) on driving shaft (15), fixed mounting has driving device on driving shaft (15), fixed mounting has on the inner wall (20) of driving shaft (20) on the inner wall (1) of box (1), on the inner wall (24) of the inner wall of box (20), the driving rod (25) is rotatably arranged on the sliding block (24), the driving rod (25) is in transmission connection with the transmission shaft (21), the transmission rod (28) is slidably arranged on the driving rod (25), the transmission rod (28) is in transmission connection with the material conveying rod (10), the transmission rod (28) is connected with the connecting shaft (31), the gear accelerating box (34) is fixedly arranged on the other side of the box body (1), the installation rod (35) is arranged on the gear accelerating box (34), the striking device is slidably arranged on the installation rod (35), and the baffle (41) is fixedly arranged on the other side of the box body (1).
2. The extraction device for heavy metal content in soil according to claim 1, wherein the moving device comprises a plurality of guide wheels (3), and the guide wheels (3) are movably mounted at the bottoms of the two brackets (2) respectively.
3. The extraction device for heavy metal content in soil according to claim 1, wherein two telescopic rods (11) are symmetrically and fixedly arranged at the top of the box body (1), fixed plates (12) are fixedly arranged on the two telescopic rods (11), the same mounting box (13) is fixedly arranged on the two fixed plates (12), and a driving motor (14) is fixedly arranged in the mounting box (13).
4. The extraction device for heavy metal content in soil according to claim 1, wherein the driving device comprises a rotary drum (17), a circulating groove (18) and a circular ring (19), the rotary drum (17) is fixedly arranged on a driving shaft (15), the circulating groove (18) is arranged on the rotary drum (17), the circular ring (19) is movably arranged in the circulating groove (18), and the circular ring (19) is fixedly connected with a protection frame (20).
5. An extraction device for heavy metal content in soil according to claim 1, characterized in that the driving shaft (15) is fixedly provided with a first driving gear (22), the driving shaft (21) is fixedly provided with a first transmission gear (23), and the first driving gear (22) is meshed with the first transmission gear (23).
6. An extraction device for heavy metal content in soil according to claim 1, characterized in that the transmission shaft (21) is fixedly provided with a second driving gear (26), the driving rod (25) is fixedly provided with a second driving gear (27), and the second driving gear (26) is meshed with the second driving gear (27).
7. The extraction device for heavy metal content in soil according to claim 1, wherein a third driving gear (29) is fixedly arranged on the transmission rod (28), a third driving gear (30) is fixedly arranged on the material conveying rod (10), and the third driving gear (29) is meshed with the third driving gear (30).
8. The extraction device for heavy metal content in soil according to claim 1, wherein a fourth driving gear (32) is fixedly arranged on the transmission rod (28), a fourth driving gear (33) is fixedly arranged on the connecting shaft (31), and the fourth driving gear (32) is meshed with the fourth driving gear (33).
9. An extraction device for heavy metal content in soil according to claim 1, characterized in that the striking means comprise an elliptical plate (36), the elliptical plate (36) being slidably mounted on a mounting rod (35).
10. The extraction device for heavy metal content in soil according to claim 9, wherein a chute (37) is formed in the elliptical plate (36), a limiting rod (38) is fixedly arranged in the chute (37), a supporting rod (39) is slidably arranged on the limiting rod (38), the supporting rod (39) is fixedly connected with the mounting rod (35), and a pressure spring (40) is fixedly arranged in the chute (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310664930.6A CN116399672B (en) | 2023-06-07 | 2023-06-07 | Extraction element for heavy metal content in soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310664930.6A CN116399672B (en) | 2023-06-07 | 2023-06-07 | Extraction element for heavy metal content in soil |
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| CN116399672B CN116399672B (en) | 2023-09-08 |
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