A soil drying apparatus
By introducing an exhaust fan, dust filter, and rotary drive motor into the soil drying device, combined with a soil turning mechanism, the problems of low efficiency and unevenness in traditional soil drying are solved, achieving efficient and uniform soil drying and ensuring the accuracy of test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN WEILAN ENVIRONMENTAL TESTING CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional soil drying methods are inefficient, especially in high-humidity environments where it can take weeks, and the drying process is uneven, leading to inaccurate test results.
A soil drying device was designed, comprising an exhaust fan, a dust filter, a rotary drive motor, and a soil turning mechanism, forming a directional ventilation system. The rotary drive motor drives a circular support plate and the turning mechanism to ensure uniform airflow and thorough soil turning.
This method enables efficient and uniform air drying of soil samples, shortens the drying time, improves the accuracy and reliability of test results, and prevents the entry of external pollutants.
Smart Images
Figure CN224382012U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of soil testing, and more specifically, it relates to a soil drying device. Background Technology
[0002] In fields such as soil environmental monitoring, agricultural research, and geological exploration, the analysis of soil samples is a crucial means of obtaining key data such as soil physicochemical properties and pollutant content. Soil air drying, as the primary step in sample pretreatment, directly impacts the accuracy and reliability of subsequent testing results.
[0003] Traditional soil drying methods mainly rely on natural air drying, which involves spreading soil samples flat in an open environment or a well-ventilated room, allowing moisture to evaporate through natural air circulation. While this method is simple to operate, it has significant drawbacks: the drying cycle is lengthy, especially in high-humidity environments, often requiring several weeks or even longer, severely limiting testing efficiency.
[0004] To address the inefficiency of natural air drying, some techniques employ simple ventilation equipment to assist drying, such as installing electric fans or exhaust fans in the ventilation room. However, these methods still have shortcomings: the airflow direction is unidirectional and lacks regularity, resulting in uneven drying of different parts of the soil sample, with the surface soil potentially becoming over-dried while the inner soil remains moist.
[0005] Therefore, it is necessary to design a soil drying device that can efficiently and uniformly air-dry soil samples. Utility Model Content
[0006] The purpose of this invention is to provide a soil drying device that can efficiently dry soil samples.
[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a soil drying device, including a drying box; a door panel is provided on the front side of the drying box, and air vents are provided on both sides of the drying box, an exhaust fan is provided in one of the air vents, and a dust filter is provided in the other air vent.
[0008] The drying box is equipped with a soil tray, a circular support plate, an annular support plate, and a rotary drive motor.
[0009] The bottom end of the annular support plate and the stator of the rotary drive motor are respectively fixedly connected to the top surface of the bottom plate of the drying box. The top of the annular support plate is rotatably connected to the bottom surface of the circular support plate for rotating support of the circular support plate. The rotor shaft of the rotary drive motor is limited and connected to the middle of the bottom surface of the circular support plate for rotating drive of the circular support plate. The soil tray is placed on the top surface of the circular support plate.
[0010] As a preferred embodiment of this utility model, a rotating fixing column is provided in the middle of the bottom surface of the circular support plate, and a cross groove is provided in the bottom surface of the rotating fixing column. A cross-shaped locking block is fixedly provided at the top end of the rotor shaft of the rotary drive motor, and the top end of the cross-shaped locking block extends into the cross groove.
[0011] As a preferred technical solution of this utility model, the bottom surface of the circular support plate is provided with an upwardly recessed annular track groove at the position corresponding to the annular support plate.
[0012] The top of the annular support plate is provided with a downwardly recessed annular receiving groove, and a number of spherical balls are arranged inside the annular receiving groove.
[0013] The top of the ball extends beyond the opening of the annular receiving groove and is disposed within the annular track groove.
[0014] As a preferred embodiment of this utility model, the cross-section of the annular receiving groove is an arc with a central angle exceeding 180°.
[0015] As a preferred embodiment of this utility model, the drying box is further equipped with a soil turning mechanism. The soil turning mechanism includes a horizontal support rod, a plurality of first path turning rods, and a plurality of second path turning rods. The horizontal support rod is detachably and parallelly arranged above the soil tray. The top end of the first path turning rod is vertically and fixedly connected to the left side of the bottom surface of the horizontal support rod, and the top end of the second path turning rod is vertically and fixedly connected to the right side of the bottom surface of the horizontal support rod. The bottom ends of the first path turning rod and the bottom ends of the second path turning rod extend into the soil tray.
[0016] As a preferred embodiment of this utility model, when the soil tray rotates, a plurality of first path turning rods are arranged in a turning path ring on the soil inside the soil tray, and a plurality of second path turning rods are arranged at intervals in a turning path ring on the soil inside the soil tray.
[0017] As a preferred technical solution of this utility model, the inner sides of the two side panels of the drying box are respectively provided with mounting components. The mounting components include two vertical limiting plates, a bottom limiting plate, and a limiting pin. The two ends of the bottom limiting plate are respectively vertically fixedly connected to the bottom ends of the two vertical limiting plates. An upwardly opening limiting groove is formed between the two vertical limiting plates and the bottom limiting plate. The horizontal support rod is a square rod, and the bottom shape of the limiting groove matches the horizontal support rod.
[0018] The two vertical limiting plates are respectively provided with limiting holes, and the limiting pin is detachably inserted into the limiting hole to limit the top surface of the end of the horizontal support rod.
[0019] As a preferred embodiment of this utility model, one end of the limiting pin is provided with an expansion limiting block, the rod body of the limiting pin is provided with an external thread, and the inner side of the limiting hole is provided with an internal thread that matches the external thread.
[0020] As a preferred embodiment of this utility model, a raised limiting strip is provided in the middle of the top surface of the circular support plate, and an anti-slip groove matching the limiting strip is provided on the bottom surface of the soil tray.
[0021] In a preferred embodiment of this invention, the exhaust fan is electrically connected to the rotary drive motor and starts and stops synchronously.
[0022] In summary, this utility model has the following beneficial effects:
[0023] By installing an exhaust fan and a dust filter, a good ventilation system is formed, ensuring air circulation inside the drying chamber and preventing external dust and other pollutants from entering the drying chamber, thus improving the quality of soil drying.
[0024] The circular support tray can rotate under the drive of a rotary drive motor, allowing the soil in the soil tray to receive airflow evenly, thus improving the drying efficiency.
[0025] The soil turning mechanism can turn the soil, further increasing the contact area between the soil and air, and accelerating the drying speed.
[0026] The connection structure between the components is reasonably designed, which ensures the stability and reliability of the device, while also facilitating installation, disassembly and maintenance. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of this utility model;
[0028] Figure 2 This is a schematic diagram of the mounting components of this utility model;
[0029] Figure 3 This is a schematic diagram of the bottom surface of the circular support plate of this utility model;
[0030] Figure 4 This is a schematic diagram of the top of the annular support plate and the top of the rotary drive motor of this utility model;
[0031] Figure 5 This is a schematic diagram of the soil turning trajectory on the soil tray of this utility model;
[0032] Figure 6 This is a schematic diagram of the anti-slip groove of this utility model.
[0033] 1. Drying box; 2. Vent; 3. Exhaust fan; 4. Dust filter; 5. Soil tray; 6. Circular support plate; 7. Annular support plate; 8. Rotary drive motor; 9. Box bottom plate; 10. Rotary fixing column; 11. Cross groove; 12. Cross locking block; 13. Annular track groove; 14. Annular receiving groove; 15. Ball bearing; 16. Horizontal support rod; 17. First path flipping rod; 18. Second path flipping rod; 19. Mounting component; 20. Vertical limiting plate; 21. Bottom limiting plate; 22. Limiting pin; 23. Limiting groove; 24. Expansion limiting block; 25. Anti-slip groove; 26. Limiting strip. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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 described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0035] like Figure 1 As shown, this utility model provides a soil drying device, including a drying box 1. The drying box 1 has a door panel on the front side, and air vents 2 on both sides of the drying box 1. An exhaust fan 3 is installed in one air vent 2, and a dust filter 4 is installed in the other air vent 2.
[0036] The drying box 1 is equipped with a soil tray 5, a circular support plate 6, an annular support plate 7, and a rotary drive motor 8.
[0037] The bottom end of the annular support plate 7 and the stator of the rotary drive motor 8 are fixedly connected to the top surface of the bottom plate 9 of the drying box 1, respectively. The top of the annular support plate 7 is rotatably connected to the bottom surface of the circular support tray 6 for rotating support of the circular support tray 6. The rotor shaft of the rotary drive motor 8 is limited and connected to the center of the bottom surface of the circular support tray 6 for rotating drive of the circular support tray 6. The soil tray 5 is placed on the top surface of the circular support tray 6. A raised limiting strip 26 is provided in the center of the top surface of the circular support tray 6, such as... Figure 6As shown, the bottom surface of the soil tray 5 is provided with anti-slip grooves 25 that match the limiting strip 26. The exhaust fan 3 is electrically connected to the rotary drive motor 8, and starts and stops synchronously, which facilitates the actual air-drying operation management. In practical applications, the power supply for the exhaust fan 3 and the rotary drive motor 8 is set to the same control switch.
[0038] The exhaust fan 3 and dust filter 4 form an air circulation channel, enabling directional ventilation. The exhaust fan 3 actively draws in outside air, which, after being filtered by the dust filter 4, flows into the drying chamber 1 and is then exhausted by another fan, creating a regular airflow. Compared to traditional natural ventilation, this significantly increases air velocity and accelerates the evaporation of moisture from the soil surface. It also controls dust pollution; the dust filter 4 uses a 0.5mm pore size metal mesh that can intercept over 95% of airborne dust particles, preventing external pollutants from adhering to soil samples during the drying process and ensuring the accuracy of test data.
[0039] Regarding the rotary drive structure, a rotary fixing column 10 is provided in the center of the bottom surface of the circular support plate 6. A cross groove 11 is provided on the bottom surface of the rotary fixing column 10. A cross-shaped locking block 12 is fixedly provided at the top of the rotor shaft of the rotary drive motor 8, with the top of the cross-shaped locking block 12 extending into the cross groove 11. This forms a snap-fit transmission structure. This achieves precise power transmission; the meshing gap between the cross-shaped locking block 12 and the cross groove 11 is ≤0.2mm, enabling attenuation-free transmission of motor speed (5-10r / min). This ensures the circular support plate 6 rotates at a uniform speed, allowing for uniform airflow to the soil in all parts of the soil tray 5. It also allows for convenient disassembly and maintenance. The snap-fit structure can be disassembled without tools. When cleaning the soil tray 5 or repairing the motor, simply pull the circular support plate 6 upwards to separate it, improving maintenance efficiency compared to traditional bolt connections.
[0040] Regarding the rotating support structure, such as Figure 3 and 4 As shown, the bottom surface of the circular support plate 6, corresponding to the position of the annular support plate 7, has an upwardly recessed annular track groove 13; the top of the annular support plate 7 has a downwardly recessed annular receiving groove 14, inside which are arranged several spherical balls 15; the top of the balls 15 extends beyond the opening of the annular receiving groove 14 and is positioned within the annular track groove 13. The cross-section of the annular receiving groove 14 is an arc with a central angle exceeding 180°. This forms a rolling support structure, achieving low-friction rotation. The point contact design between the balls 15 and the track groove converts sliding friction into rolling friction, reducing the coefficient of friction and lowering the motor load. It also provides stable support performance. The arc-shaped groove design with a central angle exceeding 180° allows most of the volume of the balls 15 to be embedded in the groove. Even when the pallet is carrying heavy soil, the swaying amplitude of the circular support plate 6 can be effectively controlled, ensuring stability during soil turning.
[0041] It should be noted that the cross block 12 is mainly used for torque transmission, while the ball bearing 15 and related structures are used for radial support.
[0042] Regarding uniform air-drying structures, such as Figure 5 As shown, the drying box 1 is also equipped with a soil turning mechanism, which includes a horizontal support rod 16, a number of first path turning rods 17, and a number of second path turning rods 18. The horizontal support rod 16 is detachably and parallelly arranged above the soil tray 5. The top of the first path turning rod 17 is vertically fixed to the left side of the bottom surface of the horizontal support rod 16, and the top of the second path turning rod 18 is vertically fixed to the right side of the bottom surface of the horizontal support rod 16. The bottom ends of the first path turning rod 17 and the second path turning rod 18 extend into the soil tray 5.
[0043] Specifically, when the soil tray 5 rotates, a number of first path turning rods 17 are arranged in a turning path ring on the soil inside the soil tray 5, and a number of second path turning rods 18 are arranged at intervals in a turning path ring on the soil inside the soil tray 5.
[0044] This design achieves uniform soil turning: When the circular support plate 6 rotates, the two sets of turning rods form intermittent circular turning tracks with different radii, causing the soil to circulate and turn within the tray along tracks of different radii. Compared to a single turning rod, this improves the uniformity of soil turning and prevents localized clumping. In particular, when the first path turning rod 17 turns the soil, the soil body moves to both sides of the track, forming soil bulges outside the turning track, which are located on the moving track of the second path turning rod 18. When the second path turning rod 18 moves to these soil bulges, it can turn the soil again, ensuring that all soil is continuously turned and improving the air-drying effect.
[0045] Specifically, such as Figure 2 As shown, the inner sides of the two side panels of the drying box 1 are respectively provided with mounting parts 19. The mounting parts 19 include two vertical limiting plates 20, a bottom limiting plate 21, and a limiting pin 22. The two ends of the bottom limiting plate 21 are vertically fixedly connected to the bottom ends of the two vertical limiting plates 20. An upwardly opening limiting groove 23 is formed between the two vertical limiting plates 20 and the bottom limiting plate 21. The horizontal support rod 16 is a square rod, and the bottom shape of the limiting groove 23 matches the horizontal support rod 16.
[0046] Two vertical limiting plates 20 are respectively provided with limiting holes. The limiting pin 22 is detachably inserted into the limiting hole to limit the top surface of the end of the horizontal support rod 16. One end of the limiting pin 22 is provided with an expansion limiting block 24, the rod body of the limiting pin 22 is provided with external thread, and the inner side of the limiting hole is provided with internal thread that matches the external thread.
[0047] When the horizontal support rod 16 needs to be installed, after removing the limiting pin 22, the top opening of the limiting groove 23 is opened. The horizontal support rod 16 is then inserted from the opening to the bottom of the groove, and the limiting pin 22 is screwed in to complete the installation of the horizontal support rod 16.
[0048] The usage process of this utility model is as follows:
[0049] First, place the drying box 1 in a suitable position, open the door panel, and lay the soil sample to be dried flat in the soil tray 5. Then, place the soil tray 5 on the circular support plate 6, aligning and engaging the anti-slip groove 25 on the bottom of the soil tray 5 with the limiting strip 26 on the top of the circular support plate 6 to prevent the soil tray 5 from sliding.
[0050] Next, install the soil turning mechanism. Place the horizontal support rod 16 into the limiting groove 23 of the mounting piece 19, then insert the limiting pin 22 into the limiting hole. Rotate the limiting pin 22 until the expansion limiting block 24 is in contact with the outer side of the vertical limiting plate, thereby limiting and fixing the horizontal support rod 16. At this time, the bottom ends of the first path turning rod 17 and the second path turning rod 18 extend into the soil within the soil tray 5. If the amount and thickness of soil in the soil tray 5 are small, it is not necessary to install the turning mechanism.
[0051] Afterwards, the power is turned on and the rotary drive motor 8 is started. The rotor shaft of the rotary drive motor 8 drives the rotating fixed column 10 to rotate through the cross block 12, thereby causing the circular support plate 6 to rotate. At the same time, the exhaust fan 3 starts synchronously, and exhausts the humid air in the drying box 1 through the vent 2. Outside air enters the drying box 1 through the dust filter 4 of another vent 2, forming air circulation.
[0052] As the circular support plate 6 rotates, the soil tray 5 rotates accordingly. The first path turning rod 17 and the second path turning rod 18 of the soil turning mechanism form an intermittent turning path ring on the soil in the soil tray 5, turning the soil and making it fully contact the air, thus accelerating the drying speed.
[0053] During the air-drying process, a hygrometer can be inserted into the soil periodically to check the soil moisture, depending on the drying status. The rotation of the drive motor 8 should be paused during the check. After the soil has dried, turn off the power, first remove the limit pin 22, then remove the transverse support rod 16 and the soil turning mechanism, and then open the door panel to remove the soil tray 5 and the soil sample.
[0054] It should be noted that the soil drying device of this invention is more suitable for relatively loose sandy soil. Specifically, the device uses a rotary drive motor 8 to rotate the circular support plate 6, causing the sand in the soil tray 5 to rotate at a uniform speed. Simultaneously, the first path turning rod 17 and the second path turning rod 18 of the soil turning mechanism form an intermittent circular turning trajectory for the sand during rotation, effectively preventing uneven ventilation caused by the accumulation of loose sand during the drying process. The rolling support structure of the ball bearings 15 between the annular support plate 7 and the circular support plate 6 ensures stable rotation of the tray and reduces sand spillage due to shaking. Furthermore, the directional ventilation system accelerates the evaporation of moisture from the sand surface, the dust filter 4 prevents external contamination, and the limiting and anti-slip structure ensures tray stability. This device is particularly suitable for the efficient drying of loose sandy soil, preventing sand from clumping and improving drying uniformity and sample quality.
[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A soil drying device, characterized in that: Includes a drying box (1); the drying box (1) is provided with a door panel on the front side, and ventilation ports (2) are provided on both sides of the drying box (1). An exhaust fan (3) is provided in one of the ventilation ports (2), and a dust filter (4) is provided in one of the ventilation ports (2). The drying box (1) is equipped with a soil tray (5), a circular support plate (6), an annular support plate (7), and a rotary drive motor (8); The bottom end of the annular support plate (7) and the stator of the rotary drive motor (8) are respectively fixedly connected to the top surface of the bottom plate (9) of the drying box (1). The top of the annular support plate (7) is rotatably connected to the bottom surface of the circular support plate (6) for rotating support of the circular support plate (6). The rotor shaft of the rotary drive motor (8) is limitedly connected to the middle of the bottom surface of the circular support plate (6) for rotating drive of the circular support plate (6). The soil tray (5) is placed on the top surface of the circular support plate (6).
2. The soil drying apparatus of claim 1, wherein: A rotating fixing column (10) is provided in the middle of the bottom surface of the circular support plate (6). A cross groove (11) is provided on the bottom surface of the rotating fixing column (10). A cross block (12) is fixedly provided at the top of the rotor shaft of the rotating drive motor (8). The top of the cross block (12) extends into the cross groove (11).
3. A soil drying apparatus as claimed in claim 2, wherein: The bottom surface of the circular support plate (6) is provided with an upwardly recessed annular track groove (13) at the position corresponding to the annular support plate (7); The top of the annular support plate (7) is provided with a downwardly recessed annular receiving groove (14), and a number of spherical balls (15) are arranged inside the annular receiving groove (14). The top of the ball (15) extends beyond the opening of the annular receiving groove (14) and is disposed within the annular track groove (13).
4. A soil drying apparatus as claimed in claim 3, wherein: The cross-section of the annular receiving groove (14) is an arc with a central angle exceeding 180°.
5. A soil drying apparatus as claimed in claim 4, wherein: The air-drying box (1) is also equipped with a soil turning mechanism, which includes a horizontal support rod (16), a number of first path turning rods (17), and a number of second path turning rods (18). The horizontal support rod (16) is detachably and parallel to the soil tray (5). The top end of the first path turning rod (17) is vertically fixed to the left side of the bottom surface of the horizontal support rod (16), and the top end of the second path turning rod (18) is vertically fixed to the right side of the bottom surface of the horizontal support rod (16). The bottom ends of the first path turning rod (17) and the second path turning rod (18) extend into the soil tray (5) in mid-air.
6. A soil drying apparatus as claimed in claim 5, wherein: When the soil tray (5) rotates, a plurality of first path turning rods (17) are arranged in a turning path ring on the soil inside the soil tray (5), and a plurality of second path turning rods (18) are arranged at intervals in a turning path ring on the soil inside the soil tray (5).
7. A soil drying apparatus as claimed in claim 6, wherein: The drying box (1) has two side panels with mounting parts (19) on the inner sides. The mounting parts (19) include two vertical limiting plates (20), a bottom limiting plate (21), and a limiting pin (22). The two ends of the bottom limiting plate (21) are vertically fixed to the bottom ends of the two vertical limiting plates (20). An upward-opening limiting groove (23) is formed between the two vertical limiting plates (20) and the bottom limiting plate (21). The horizontal support rod (16) is a square rod. The bottom shape of the limiting groove (23) matches the horizontal support rod (16). The two vertical limiting plates (20) are respectively provided with limiting holes, and the limiting pin (22) is detachably inserted into the limiting hole to limit the top surface of the end of the horizontal support rod (16).
8. A soil drying apparatus as claimed in claim 7, wherein: One end of the limiting pin (22) is provided with an expansion limiting block (24), the rod body of the limiting pin (22) is provided with an external thread, and the inner side of the limiting hole is provided with an internal thread that matches the external thread.
9. A soil drying apparatus as claimed in claim 8, wherein: The circular support plate (6) has a raised limiting strip (26) in the middle of its top surface, and the soil tray (5) has an anti-slip groove (25) matching the limiting strip (26) on its bottom surface.
10. A soil drying apparatus as claimed in claim 9, wherein: The exhaust fan (3) is electrically connected to the rotary drive motor (8) and starts and stops synchronously.