Soil grinding device for soil heavy metal detection

Abstract

The utility model discloses a soil heavy metal detection soil grinding device which comprises a box body, a grinding cavity and a cleaning cavity are formed in the box body through a fixedly-arranged partition plate, a rotatable grinding cylinder is arranged in the grinding cavity, a filter screen is fixedly arranged at the bottom of the grinding cylinder, a plurality of grinding balls are arranged at the top of the filter screen, and the cleaning cavity is communicated with the grinding cylinder. A driving assembly for driving the grinding cylinder to rotate is arranged on the top wall of the grinding cavity; a second cover plate is arranged in the cleaning cavity, a rotating shaft is rotationally connected into the second cover plate, and a plurality of brush plates of L-shaped structures are evenly and fixedly arranged on the outer side of the rotating shaft. By means of the structure, efficient crushing of a soil sample is achieved, and fine powder reaching the standard can be accurately screened; the cleaning cavity is provided with a brush plate which is driven by a second motor to rotate, so that the inner wall of the grinding cylinder, the grinding balls and the filter screen can be cleaned, residual soil particles can be removed, and cross contamination among different batches of samples can be prevented; the self-cleaning function reduces the workload of manual cleaning and improves the operation efficiency of equipment.

Description

Technical Field

[0001] This utility model relates to the field of soil testing equipment technology, and in particular to a soil grinding device for detecting heavy metals in soil. Background Technology

[0002] Soil heavy metal testing is a crucial step in environmental monitoring and pollution control. Its core objective is to assess soil ecological safety and risks to human health by quantitatively analyzing the content of toxic heavy metals such as lead (Pb), cadmium (Cd), arsenic (As), and mercury (Hg) in the soil. Fine grinding of the soil is necessary to ensure accuracy in heavy metal testing.

[0003] In the prior art, a search revealed a Chinese patent disclosing "A Grinding and Sieving Device for Heavy Metal Detection in Soil," application number "202222258598.7." This patent mainly includes a screening box with a feed inlet on its top side wall. A feed hopper is connected to the top side wall of the screening box, and the feed inlet is connected to the feed hopper. A rotating rod is rotatably connected to one side of the screening box's inner wall. Multiple symmetrically arranged crushing rods are fixed to the outer surface of the rotating rod. A rotating motor connected to one end of the rotating rod is installed on one side of the screening box. This invention uses a rotating motor to drive the rotating rod, causing multiple crushing rods to rotate and crush the material inside the screening box. It processes larger materials and simultaneously filters the crushed material under the action of screening plates. Through the two-layer screening plate setup, the material is filtered twice, thereby improving the screening effect on the soil. However, the aforementioned device, with its grinding rod and sieve plate for grinding and sieving soil, has an internal structure that makes cleaning difficult and cumbersome, increasing the risk of cross-contamination between different batches of samples. Therefore, this invention provides a soil grinding device for heavy metal detection to address the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this invention is to provide a soil grinding device for heavy metal detection in soil, which can efficiently crush soil samples and accurately screen out qualified fine powder; the cleaning chamber is equipped with a brush plate driven by a second motor to rotate, which can clean the inner wall of the grinding cylinder, grinding balls and filter screen, remove residual soil particles and prevent cross-contamination between different batches of samples; the self-cleaning function reduces the amount of manual cleaning and improves the operating efficiency of the equipment.

[0005] To achieve the above objectives, a soil grinding device for detecting heavy metals in soil is provided, comprising a housing, wherein a grinding chamber and a cleaning chamber are formed inside the housing by a fixedly installed partition, a rotatable grinding cylinder is provided inside the grinding chamber, a filter screen is fixedly installed at the bottom of the grinding cylinder, a plurality of grinding balls are provided at the top of the filter screen, and a drive component for driving the grinding cylinder to rotate is provided on the top wall of the grinding chamber.

[0006] The cleaning chamber is provided with a second cover plate, and a rotating shaft is rotatably connected inside the second cover plate. Multiple L-shaped brush plates are uniformly fixed on the outside of the rotating shaft.

[0007] According to the aforementioned soil grinding device for detecting heavy metals in soil, a fixed plate is fixedly provided on the rear wall of both the grinding chamber and the cleaning chamber. A movable column is rotatably connected to the top of the fixed plate. A square positioning groove is provided inside the movable column. A positioning plate that mates with the positioning groove is fixedly provided at the bottom of the filter screen.

[0008] According to the aforementioned soil grinding device for detecting heavy metals in soil, the driving assembly includes a first cover plate disposed above the grinding cylinder, and a plurality of insert plates are uniformly fixed on the side of the grinding cylinder near the top. The outer rings of the first cover plate and the second cover plate are each equidistantly fixed with a plurality of insert plates that cooperate with the insert plates.

[0009] According to the aforementioned soil grinding device for detecting heavy metals in soil, the driving assembly further includes a first cylinder fixed to the top wall of the grinding chamber, a first mounting bracket fixed to the bottom of the piston rod of the first cylinder, and a first motor fixed to the first mounting bracket, wherein the output shaft of the first motor is fixedly connected to the first cover plate.

[0010] According to the soil grinding device for detecting heavy metals in soil, a second cylinder is fixedly installed on the top wall of the cleaning chamber, a second mounting bracket is fixedly installed at the bottom end of the piston rod of the second cylinder, the second cover plate is fixedly connected to the second mounting bracket, a second motor is fixedly installed on the top of the second mounting bracket, and the rotating shaft is fixedly connected to the output shaft of the second motor.

[0011] According to the soil grinding device for detecting heavy metals in soil, a receiving plate is slidably connected to the bottom wall of both the grinding chamber and the cleaning chamber, and one end of the receiving plate is open and fixed with a guide plate of a figure-eight structure.

[0012] According to the aforementioned soil grinding device for detecting heavy metals in soil, the front side of the housing is symmetrically hinged with doors, and each door has a transparent window embedded inside.

[0013] According to the aforementioned soil grinding device for detecting heavy metals in soil, the grinding balls are made of ceramic material, and the grinding cylinder is a ceramic grinding jar.

[0014] This utility model has the following beneficial effects:

[0015] 1. Compared with existing technologies, the first motor drives the grinding cylinder to rotate, which, combined with the impact of the grinding balls, achieves efficient crushing of soil samples. It can accurately screen out qualified fine powder, and automatically circulate and crush unqualified particles, thereby improving grinding efficiency and reducing manual intervention.

[0016] 2. Compared with existing technologies, the cleaning chamber is equipped with a brush plate, which is driven to rotate by a second motor. It can clean the inner wall of the grinding cylinder, the grinding balls and the filter screen, remove residual soil particles and prevent cross-contamination between different batches of samples. The self-cleaning function reduces the amount of manual cleaning and improves the efficiency of equipment operation. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the overall structure of a soil grinding device for detecting heavy metals in soil according to this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the housing of a soil grinding device for detecting heavy metals in soil according to this utility model;

[0020] Figure 3 This is a schematic diagram of the grinding cylinder, grinding balls, and filter screen of a soil grinding device for detecting heavy metals in soil according to this utility model.

[0021] Figure 4 This utility model relates to a soil grinding device for detecting heavy metals in soil. Figure 3 Another perspective structural diagram;

[0022] Figure 5 This is a schematic diagram of the rotating shaft and brush plate structure of a soil grinding device for detecting heavy metals in soil according to this utility model.

[0023] Legend:

[0024] 1. Box body; 2. Partition plate; 3. Grinding cylinder; 4. Filter screen; 5. Grinding ball; 6. First cylinder; 7. First mounting bracket; 8. First motor; 9. First cover plate; 10. Insert plate; 11. Insertion plate; 12. Fixing plate; 13. Movable column; 14. Positioning groove; 15. Box door; 16. Transparent window; 17. Positioning plate; 18. Receiving plate; 19. Second cylinder; 20. Second mounting bracket; 21. Second motor; 22. Rotating shaft; 23. Second cover plate; 24. Brush plate. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-5 This utility model discloses a soil grinding device for detecting heavy metals in soil, which includes a housing 1. Inside the housing 1, a grinding chamber and a cleaning chamber are formed by a fixedly installed partition 2. A rotatable grinding cylinder 3 is provided inside the grinding chamber. A filter screen 4 is fixedly installed at the bottom of the grinding cylinder 3. A plurality of grinding balls 5 are provided at the top of the filter screen 4. A drive assembly for driving the grinding cylinder 3 to rotate is provided on the top wall of the grinding chamber. The drive assembly includes a first cover plate 9 located above the grinding cylinder 3, a first cylinder 6 fixedly installed on the top wall of the grinding chamber, a first mounting bracket 7 fixedly installed at the bottom of the piston rod of the first cylinder 6, and a first motor 8 fixedly installed on the first mounting bracket 7. A plurality of insert plates 10 are evenly fixed on the side of the grinding cylinder 3 near the top. A plurality of plug-in plates 11 that cooperate with the insert plates 10 are fixedly fixed at equal intervals on the outer rings of the first cover plate 9 and the second cover plate 23. The output shaft of the first motor 8 is fixedly connected to the first cover plate 9.

[0027] The grinding cylinder 3 is positioned inside the grinding chamber via the cooperation of the positioning plate 17 and the positioning groove 14. The soil sample to be tested is fed into the grinding cylinder 3, and the first cylinder 6 pushes the first mounting bracket 7 downward, so that the insertion plate 11 of the first cover plate 9 is precisely inserted into the insertion plate 10 at the top of the grinding cylinder 3. The first motor 8 drives the grinding cylinder 3 to rotate, and the ceramic grinding balls 5 impact and crush the soil. The ground soil particles are screened by the filter screen 4. The qualified fine powder falls into the receiving plate 18 at the bottom of the grinding chamber, while the unqualified particles continue to be crushed as the grinding cylinder 3 rotates.

[0028] The cleaning chamber is equipped with a second cover plate 23. A rotating shaft 22 is rotatably connected inside the second cover plate 23. Multiple L-shaped brush plates 24 are evenly fixed on the outside of the rotating shaft 22. A second cylinder 19 is fixed on the top wall of the cleaning chamber. A second mounting bracket 20 is fixed at the bottom end of the piston rod of the second cylinder 19. The second cover plate 23 is fixedly connected to the second mounting bracket 20. A second motor 21 is fixedly fixed on the top of the second mounting bracket 20. The rotating shaft 22 is fixedly connected to the output shaft of the second motor 21.

[0029] After grinding, the grinding cylinder 3 is placed inside the cleaning chamber, and the positioning plate 17 at the bottom of the filter screen 4 cooperates with the positioning groove 14 for positioning. The second cylinder 19 presses down the second cover plate 23 to cover the top of the grinding cylinder 3, and the second motor 21 drives the rotating shaft 22 to rotate the L-shaped brush plate 24 to clean the inner wall of the grinding cylinder 3, the grinding balls 5 and the filter screen 4, and remove residues to achieve self-cleaning after grinding and avoid cross-contamination of samples.

[0030] A fixed plate 12 is fixedly provided on the rear wall of both the grinding chamber and the cleaning chamber. A movable column 13 is rotatably connected to the top of the fixed plate 12. A square positioning groove 14 is provided inside the movable column 13. A positioning plate 17 that is inserted into the positioning groove 14 is fixedly provided at the bottom of the filter screen 4.

[0031] The positioning plate 17 at the bottom of the filter screen 4 is inserted into the square positioning groove 14 of the movable column 13, which can position the grinding cylinder 3 and facilitate disassembly. At the same time, the rotating movable column 13 ensures the free rotation operation of the grinding cylinder 3.

[0032] A receiving plate 18 is slidably connected to the bottom wall of both the grinding chamber and the cleaning chamber. One end of the receiving plate 18 is open and is fixed with a guide plate with an eight-shaped structure. Pull out the receiving plate 18 of the grinding chamber and the cleaning chamber to obtain the sieved soil sample and the cleaning waste respectively, and complete the grinding-cleaning process.

[0033] The front of the box 1 is symmetrically hinged with a box door 15, which keeps the box 1 in a sealed state. Each box door 15 is equipped with a transparent window 16, and the internal state can be observed through the transparent window 16 when the box door 15 is closed.

[0034] The grinding ball 5 is made of ceramic, and the grinding cylinder 3 is a ceramic grinding jar to avoid metal contamination and ensure the reliability of heavy metal detection data.

[0035] Working principle: The grinding cylinder 3 is positioned inside the grinding chamber by the cooperation of the positioning plate 17 and the positioning groove 14. The soil sample to be tested is fed into the grinding cylinder 3. The first cylinder 6 pushes the first mounting bracket 7 down, so that the insertion plate 11 of the first cover plate 9 is precisely inserted into the insertion plate 10 at the top of the grinding cylinder 3. The first motor 8 drives the grinding cylinder 3 to rotate, and the ceramic grinding balls 5 impact and crush the soil. The ground soil particles are screened by the filter screen 4. The qualified fine powder falls into the receiving plate 18 at the bottom of the grinding chamber, while the unqualified particles continue to be crushed as the grinding cylinder 3 rotates.

[0036] After grinding, the grinding cylinder 3 is placed inside the cleaning chamber, and the positioning plate 17 at the bottom of the filter screen 4 cooperates with the positioning groove 14 for positioning. The second cylinder 19 presses down the second cover plate 23 to cover the top of the grinding cylinder 3, and the second motor 21 drives the rotating shaft 22 to rotate the L-shaped brush plate 24 to clean the inner wall of the grinding cylinder 3, the grinding balls 5 and the filter screen 4, and remove residues to achieve self-cleaning after grinding and avoid cross-contamination of samples.

[0037] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A soil grinding device for detecting heavy metals in soil, characterized in that, Includes a housing (1), inside which a grinding chamber and a cleaning chamber are formed by a fixed partition (2), the grinding chamber is provided with a rotatable grinding cylinder (3), the bottom of the grinding cylinder (3) is fixedly provided with a filter screen (4), the top of the filter screen (4) is provided with multiple grinding balls (5), and the top wall of the grinding chamber is provided with a drive assembly for driving the grinding cylinder (3) to rotate; The cleaning chamber is provided with a second cover plate (23), and a rotating shaft (22) is rotatably connected inside the second cover plate (23). Multiple L-shaped brush plates (24) are uniformly fixed on the outside of the rotating shaft (22).

2. The soil grinding device for detecting heavy metals in soil according to claim 1, characterized in that, A fixing plate (12) is fixedly provided on the rear wall of both the grinding chamber and the cleaning chamber. A movable column (13) is rotatably connected to the top of the fixing plate (12). A square positioning groove (14) is opened inside the movable column (13). A positioning plate (17) that cooperates with the positioning groove (14) is fixedly provided at the bottom of the filter screen (4).

3. The soil grinding device for detecting heavy metals in soil according to claim 2, characterized in that, The drive assembly includes a first cover plate (9) disposed above the grinding cylinder (3). A plurality of insert plates (10) are uniformly fixed on one side of the grinding cylinder (3) near the top. A plurality of plug plates (11) that cooperate with the insert plates (10) are fixed at equal intervals on the outer rings of the first cover plate (9) and the second cover plate (23).

4. The soil grinding device for detecting heavy metals in soil according to claim 3, characterized in that, The drive assembly also includes a first cylinder (6) fixed on the top wall of the grinding chamber, a first mounting bracket (7) fixed on the bottom of the piston rod of the first cylinder (6), and a first motor (8) fixed on the first mounting bracket (7). The output shaft of the first motor (8) is fixedly connected to the first cover plate (9).

5. A soil grinding device for detecting heavy metals in soil according to claim 4, characterized in that, A second cylinder (19) is fixedly mounted on the top wall of the cleaning chamber. A second mounting bracket (20) is fixedly mounted at the bottom end of the piston rod of the second cylinder (19). The second cover plate (23) is fixedly connected to the second mounting bracket (20). A second motor (21) is fixedly mounted on the top of the second mounting bracket (20). The rotating shaft (22) is fixedly connected to the output shaft of the second motor (21).

6. The soil grinding device for detecting heavy metals in soil according to claim 5, characterized in that, The grinding chamber and the cleaning chamber are both slidably connected to a receiving plate (18), and one end of the receiving plate (18) is open and fixed with a guide plate with a figure-eight structure.

7. The soil grinding device for detecting heavy metals in soil according to claim 1, characterized in that, The box body (1) is symmetrically hinged with a box door (15) on the front side, and each box door (15) is fitted with a transparent window (16).

8. The soil grinding device for detecting heavy metals in soil according to claim 7, characterized in that, The grinding ball (5) is made of ceramic, and the grinding cylinder (3) is a ceramic grinding jar.

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