Soil screening device for environmental soil detection

Abstract

The utility model discloses a soil screening device for environmental soil detection, which comprises a box body, a screening assembly and a drawing box, and the screening assembly comprises a first roller and a second roller. When soil is screened, the second roller is rotated firstly, hole shafts of the second screening holes and hole shafts of the first screening holes are located on the same straight line, then soil to be screened is put into the first roller through the opening of the first roller, the driving motor is started, the driving motor drives the rotating shaft to rotate, and the rotating shaft drives the first roller and the second roller to rotate synchronously; the soil with smaller particle diameter falls into the drawing box through the first screening hole and the second screening hole, so that the first type of soil is screened out; after the first type of soil is screened, the second roller is rotated again, the hole axis of the third screening hole and the hole axis of the first screening hole are located on the same straight line, meanwhile, the drawing box is replaced, and in the same way, the second type of soil is screened out, so that the soil is screened into multiple groups of soil samples with different thicknesses, and the soil detection precision is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of soil environmental testing, and in particular to a soil screening device for environmental soil testing. Background Technology

[0002] Environmental monitoring utilizes GIS technology to design environmental monitoring networks. The information collected through environmental monitoring can be stored and displayed in real time via GIS, enabling detailed site monitoring and analysis of selected evaluation areas. Soil environmental monitoring refers to determining environmental quality (or pollution level) and its changing trends by measuring representative values ​​of factors affecting soil environmental quality. The physical properties of soil (such as particle size, porosity, and density) are closely related to soil moisture retention capacity, aeration, and nutrient mobility. Furthermore, soil particles of different sizes may adsorb and aggregate different pollutants. For example, fine-particle soils typically have a larger specific surface area, making them more prone to adsorbing heavy metals and organic pollutants. Therefore, soil sieving is an important pretreatment step in environmental soil testing. Existing methods struggle to sieve soil into multiple groups of soil samples with varying coarseness; therefore, a soil sieving device for environmental soil testing is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a soil screening device for environmental soil testing, thereby solving the above-mentioned problems.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A soil screening device for environmental soil testing includes:

[0006] Box;

[0007] The screening assembly includes a first roller disposed within the housing. One end of the first roller is open, and the other end is connected to a drive motor via a rotating shaft. A second roller is rotatably connected to the first roller. The inner wall of the second roller is in contact with the outer wall of the first roller. A first screening hole is provided on the side of the first roller. A second screening hole and a third screening hole corresponding to the first screening hole are provided on the side of the second roller. The diameter of the second screening hole is smaller than the diameter of the first screening hole, and the diameter of the third screening hole is equal to the diameter of the first screening hole.

[0008] A drawer is disposed inside the box and located below the first roller.

[0009] Optionally, a motor housing is provided on the side wall of the housing, and the drive motor is installed inside the motor housing.

[0010] Optionally, the first roller is provided with a first adjustment groove at one end near the drive motor, and the side wall of the housing is provided with a first adjustment rail corresponding to the first adjustment groove;

[0011] The second roller has a second adjustment groove at one end near the drive motor, and the side wall of the housing has a second adjustment rail corresponding to the second adjustment groove.

[0012] Optionally, a support ring is provided inside the box, and the second roller is sleeved inside the support ring;

[0013] The inner side of the support ring is provided with a rolling groove, and a ball is provided on the rolling groove. The side of the second roller is provided with an annular groove corresponding to the ball.

[0014] Optionally, the support ring is fixed to the inner wall of the housing by a connecting rod.

[0015] Optionally, the outer circumferential surface of the first roller is provided with a plurality of mounting grooves, and elastic retaining beads are provided in the mounting grooves. The inner circumferential surface of the second roller is provided with a plurality of retaining grooves corresponding to the elastic retaining beads at equal intervals.

[0016] Optionally, a door is rotatably connected to one side of the housing, and the door is provided with a protrusion corresponding to the opening of the first roller.

[0017] Optionally, the drawer is provided with a handle on its side; the bottom of the box is provided with support feet.

[0018] Compared with existing technologies, this invention has the following advantages: When sieving soil, the second roller is first rotated so that the shaft of the second sieve hole is aligned with the shaft of the first sieve hole. Then, the soil to be sieved is placed into the first roller through the opening. The drive motor is started, and the drive motor drives the rotating shaft to rotate. The rotating shaft drives the first and second rollers to rotate synchronously. Soil with smaller particle diameters falls into the collection box through the first and second sieve holes, thus sieving out the first type of soil (soil with smaller particle diameters). After the first type of soil is sieved, the second roller is rotated again so that the shaft of the third sieve hole is aligned with the shaft of the first sieve hole. At the same time, the collection box is replaced, and similarly, the second type of soil (soil with larger particle diameters) is sieved out. This invention, by changing the aperture of the sieve holes, can sieve soil into multiple groups of soil samples with different coarsenesses, thereby improving the accuracy of soil testing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 This is a front structural diagram of the soil screening device for environmental soil testing according to the present invention;

[0022] Figure 2 This is a schematic diagram of the back structure of the soil screening device for environmental soil testing according to this utility model;

[0023] Figure 3 This is a schematic diagram of the connection structure between the screening component and the support ring of this utility model;

[0024] Figure 4 This is an exploded view of the screening component and support ring of this utility model;

[0025] Figure 5 This is a schematic diagram of the adjusting rod.

[0026] Illustrations: 10. Box body; 11. First adjusting rail; 12. Second adjusting rail; 13. Box door; 14. Protrusion; 15. Support foot; 20. Screening assembly; 21. First roller; 211. First screening hole; 212. First adjusting groove; 22. Rotating shaft; 23. Second roller; 231. Second screening hole; 232. Third screening hole; 233. Second adjusting groove; 234. Annular groove; 24. Motor box; 25. Clamping ball; 30. Drawer box; 31. Handle; 40. Support ring; 41. Ball bearing; 42. Connecting rod; 50. Adjusting rod; 51. Connecting rod; 52. Insert rod. Detailed Implementation

[0027] To make the invention's objectives, features, and advantages more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1 to 4This utility model provides a soil sieving device for environmental soil testing, including a housing 10, a sieving assembly 20, and a drawer 30. The housing 10 is rectangular and has an inner cavity. The sieving assembly 20 includes a first roller 21 disposed within the housing 10, which is rotatable within the inner cavity of the housing 10. One end of the first roller 21 is open, and the other end is connected to a drive motor via a rotating shaft 22. The drive motor is fixedly mounted on the side wall of the housing 10. A second roller 23 is rotatably connected to the first roller 21. One end of the second roller 23 is open, and the opening of the second roller 23 corresponds to the opening of the first roller 21. The inner wall surface of the second roller 23 is in contact with the outer wall surface of the first roller 21, and the end face of the second roller 23 near the drive motor is in contact with the inner side wall surface of the housing 10. The first roller 21 has a first sieving hole 211 on its side, and the second roller 23 has a second sieving hole 231 and a third sieving hole 232 on its side, corresponding to the first sieving hole 211. The diameter of the second sieving hole 231 is smaller than that of the first sieving hole 211, and the diameter of the third sieving hole 232 is equal to that of the first sieving hole 211. When the second roller 23 rotates, the axis of the second sieving hole 231 can be aligned with the axis of the first sieving hole 211, or the axis of the third sieving hole 232 can be aligned with the axis of the first sieving hole 211. When the axis of the second sieving hole 231 is aligned with the axis of the first sieving hole 211, the third sieving hole 232 and the first sieving hole 211 do not interfere with each other. A collection box 30 is disposed inside the housing 10 and located below the first roller 21, and is used to collect the sieved soil samples.

[0031] When sieving soil, first rotate the second roller 23 so that the shaft of the second sieve hole 231 is aligned with the shaft of the first sieve hole 211. Then, the soil to be sieved is placed into the first roller 21 through the opening. Start the drive motor, which drives the rotating shaft 22 to rotate. The rotating shaft 22 drives the first roller 21 and the second roller 23 to rotate synchronously. Soil with smaller particle diameters falls into the collection box 30 through the first sieve hole 211 and the second sieve hole 231, thus sieving out the first type of soil (soil with smaller particle diameter). After the first type of soil is sieved, rotate the second roller 23 again so that the shaft of the third sieve hole 232 is aligned with the shaft of the first sieve hole 211. At the same time, replace the collection box 30. Similarly, sieve out the second type of soil (soil with larger particle diameter). This invention can sieve soil into multiple groups of soil samples with different coarseness by changing the aperture of the sieve holes, thereby improving the accuracy of soil testing.

[0032] Furthermore, a motor housing 24 is provided on the side wall of the housing 10, and the drive motor is installed inside the motor housing 24. The output shaft of the motor passes through the side wall of the housing 10 and is connected to the rotating shaft 22. Optionally, the second roller 23 has a through hole on the side near the drive motor, and the rotating shaft 22 passes through the through hole and is connected to the output shaft of the drive motor.

[0033] Furthermore, the first roller 21 has a first adjusting groove 212 at the end near the drive motor, and a first adjusting rail 11 corresponding to the first adjusting groove 212 is provided on the side wall of the housing 10; the second roller 23 has a second adjusting groove 233 at the end near the drive motor, and a second adjusting rail 12 corresponding to the second adjusting groove 233 is provided on the side wall of the housing 10. When the second roller 23 needs to be rotated, the pin is inserted into the first adjusting groove 212, and then the adjusting rod 50 is inserted into the second adjusting groove 233. Rotating the adjusting rod 50 initially causes the first roller 21 and the second roller 23 to rotate; when the pin contacts both ends of the first adjusting rail 11, the first roller 21 is limited and cannot continue to rotate. At this time, continuing to rotate the adjusting rod 50 allows the second roller 23 to continue to rotate, thereby realizing the rotation of the second roller 23 relative to the first roller 21.

[0034] Furthermore, the outer circumferential surface of the first roller 21 is provided with multiple mounting grooves, and elastic retaining beads 25 are provided in the mounting grooves. The inner circumferential surface of the second roller 23 is provided with multiple slots (not shown) at equal intervals corresponding to the elastic retaining beads 25. In the initial state, the elastic retaining beads 25 are engaged in the slots (at this time, the first roller 21 and the second roller 23 are in a locked state). When the first roller 21 rotates, the first roller 21 drives the second roller 23 to rotate synchronously through the elastic retaining beads 25. When the second roller 23 rotates relative to the first roller 21, the elastic retaining beads 25 are compressed into the mounting groove, thereby enabling the second roller 23 to rotate relative to the first roller 21 (at this time, the first roller 21 and the second roller 23 are in an unlocked state). When an adjacent slot rotates onto the elastic retaining beads 25, the retaining beads 25 are engaged in the slots again, and the first roller 21 and the second roller 23 are locked again, thereby adjusting the relative position of the second screening hole 231 or the third screening hole 232 and the first screening hole 211.

[0035] Furthermore, a support ring 40 is provided inside the housing 10, and the second roller 23 is sleeved inside the support ring 40; the inner side of the support ring 40 is provided with a rolling groove, on which a ball 41 is provided, and the side of the second roller 23 is provided with an annular groove 234 corresponding to the ball 41. This technical solution effectively improves the stability of the first roller 21 and the second roller 23 during rotation. Optionally, the support ring 40 is fixed to the inner wall of the housing 10 by a connecting rod 42.

[0036] Furthermore, a door 13 is rotatably connected to one side of the housing 10, and a protrusion 14 corresponding to the opening of the first roller 21 is provided on the door 13. When the door 13 is closed, the protrusion 14 engages with the opening of the first roller 21, thereby preventing soil from flowing out of the opening of the first roller 21 during soil screening.

[0037] Furthermore, a handle 31 is provided on the side of the drawer 30 to facilitate the removal of the drawer 30. Support feet 15 are provided on the bottom surface of the box body 10.

[0038] Reference Figure 5 This utility model embodiment also discloses an adjusting rod 50 for rotating the second roller 23. The adjusting rod 50 includes a connecting rod 51 and insert rods 52 disposed at both ends of the connecting rod 51. When it is necessary to rotate the second roller 23, one end of the insert rod 52 is inserted into the second adjusting groove 233, and then the connecting rod 51 is rotated to rotate the second roller 23. Optionally, the cross-sections of the first adjusting groove 212 and the second adjusting groove 233 are both regular hexagons, and correspondingly, the cross-section of the end of the insert rod 52 away from the connecting rod 51 is also a regular hexagon.

[0039] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A soil screening device for environmental soil testing, characterized in that, include: Box (10); The screening assembly (20) includes a first roller (21) disposed inside the housing (10). One end of the first roller (21) is open, and the other end is connected to a drive motor via a rotating shaft (22). A second roller (23) is rotatably connected to the first roller (21). The inner wall of the second roller (23) is in contact with the outer wall of the first roller (21). A first screening hole (211) is provided on the side of the first roller (21). A second screening hole (231) and a third screening hole (232) corresponding to the first screening hole (211) are provided on the side of the second roller (23). The diameter of the second screening hole (231) is smaller than the diameter of the first screening hole (211), and the diameter of the third screening hole (232) is equal to the diameter of the first screening hole (211). A drawer box (30) is disposed inside the box body (10) and located below the first roller (21).

2. The soil screening device for environmental soil testing according to claim 1, characterized in that, A motor housing (24) is provided on the side wall of the housing (10), and the drive motor is installed in the motor housing (24).

3. The soil screening device for environmental soil testing according to claim 1, characterized in that, The first roller (21) is provided with a first adjustment groove (212) at one end near the drive motor, and the side wall of the housing (10) is provided with a first adjustment rail (11) corresponding to the first adjustment groove (212). The second roller (23) is provided with a second adjustment groove (233) at one end near the drive motor, and the side wall of the housing (10) is provided with a second adjustment rail (12) corresponding to the second adjustment groove (233).

4. The soil screening device for environmental soil testing according to claim 1, characterized in that, A support ring (40) is provided inside the housing (10), and the second roller (23) is sleeved inside the support ring (40); The inner side of the support ring (40) is provided with a rolling groove, and a ball (41) is provided on the rolling groove. The side of the second roller (23) is provided with an annular groove (234) corresponding to the ball (41).

5. The soil screening device for environmental soil testing according to claim 4, characterized in that, The support ring (40) is fixed to the inner wall of the box (10) by a connecting rod (42).

6. The soil screening device for environmental soil testing according to claim 1, characterized in that, The outer circumferential surface of the first roller (21) is provided with multiple mounting grooves, and elastic retaining beads (25) are provided in the mounting grooves. The inner circumferential surface of the second roller (23) is provided with multiple retaining grooves corresponding to the elastic retaining beads (25) at equal intervals.

7. The soil screening device for environmental soil testing according to claim 1, characterized in that, A door (13) is rotatably connected to one side of the box body (10), and a protrusion (14) corresponding to the opening of the first roller (21) is provided on the door (13).

8. The soil screening device for environmental soil testing according to claim 1, characterized in that, The drawer (30) is provided with a handle (31) on its side; the bottom of the box (10) is provided with a support foot (15).

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