A soil dryer for testing

Abstract

This utility model discloses a soil dryer for testing, including a drying chamber, a hot air mechanism, at least one dust collection component, and at least one soil placement box. The drying chamber has at least one drying compartment. The hot air mechanism is installed inside the drying chamber and has at least one hot air outlet, which is connected to each of the drying compartments. The dust collection components are installed on each of the drying compartments to guide the hot air out and filter out soil powder. The soil placement boxes are inserted into each of the drying compartments. This utility model forms a drying flow path for the soil through the hot air mechanism, soil placement boxes, and dust collection components. When there are multiple drying compartments, the compartments act as partitions to avoid cross-contamination of soil samples in each compartment during drying. Furthermore, the dust collection components in each drying compartment can intercept soil powder carried by the hot air, preventing sample loss.

Description

Technical Field

[0001] This utility model relates to the field of soil drying technology, specifically to a soil dryer for testing. Background Technology

[0002] Soil testing is an important means of assessing soil quality, health status, and environmental impact. It uses scientific methods to analyze the physical, chemical, and biological properties of soil, providing data support for agriculture, environmental protection, scientific research, and other fields. Before soil testing, a drying process is generally required. Because of capillary action and binding forces between particles in moist soil, direct testing may alter its original structure (such as breaking down aggregates). Drying disperses soil particles, facilitating subsequent grinding, sieving, and other operations.

[0003] 202323419571.2 discloses a soil testing sample drying device, including a cabinet, four support legs at the bottom of the cabinet, a lifting structure inside the cabinet, a cavity inside the cabinet, a hot air blower inside the cavity, and an air inlet pipe fixedly connected to the rear side of the hot air blower.

[0004] For the aforementioned existing technologies, injecting hot air in layers to distribute the air force evenly and avoid excessive concentration of air force can reduce the probability of soil samples being blown away. However, evenly distributed hot air will still blow away a small amount of powdered soil, especially when the soil samples in each layer are of different types. Cross-contamination between soil samples can also occur when hot air passes through each layer. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a soil dryer for testing, which solves the technical problem that in the prior art, even when the hot air is evenly distributed, a small amount of powdered soil is still blown away, especially when the types of soil samples in each layer are different, the hot air cross-contamination between soil samples will also cause cross-contamination.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a soil dryer for testing, comprising:

[0008] The drying chamber has at least one drying compartment.

[0009] A hot air mechanism is installed inside the drying chamber and has at least one hot air outlet, which is connected to the drying compartments one by one.

[0010] At least one dust collection component, each corresponding to one of the drying grids, guides hot air out and filters out soil powder; and

[0011] At least one soil placement box is inserted into the drying compartment in a corresponding manner. The soil placement box is provided with an air inlet and an air outlet. The air inlet is connected to the hot air outlet in a corresponding manner, and the air outlet is connected to the dust collection component in a corresponding manner.

[0012] In some embodiments, the dust collection assembly includes a docking component, an air duct, and a filter element, which are connected end to end in sequence, and the air duct is connected and communicates with the drying grid.

[0013] In some embodiments, the docking component includes a telescopic mechanism, a flexible cylinder, and a cover frame. The two ends of the flexible cylinder are respectively connected to the cover frame and the air duct. The telescopic mechanism is installed on the air duct, and the telescopic end of the telescopic mechanism is connected to the cover frame.

[0014] In some embodiments, the diameter of the air duct near the docking member is smaller than the diameter of the other end.

[0015] In some embodiments, the air duct includes a straight section and a flared section, the straight section is connected to the flared section, the other end of the straight section is connected to the connector, and the other end of the flared section is connected to the filter.

[0016] In some embodiments, a mixing mechanism is mounted on the inner side of the cover frame via a bracket, the mixing mechanism having a mixing end for mixing soil.

[0017] In some embodiments, the drying chamber has an empty cavity corresponding to each drying compartment, the air duct passes through the drying compartment from bottom to top and is inserted into the empty cavity, and the empty cavity has a plurality of holes communicating with the outside of the drying chamber.

[0018] In some embodiments, the soil placement box includes an air guide seat, a mesh plate, and a cylinder. The mesh plate is connected to the top of the air guide seat, the cylinder is connected to the top of the mesh plate, the air inlet is disposed on the air guide seat, and the air outlet is disposed on the top of the cylinder.

[0019] In some embodiments, the diameter of the air guide seat is larger than the diameter of the mesh plate, and the air inlet is disposed on the side of the air guide seat.

[0020] In some embodiments, the hot air mechanism includes a blower, heating wires, and air ducts. A plurality of air ducts are connected to the drying compartments one by one, and their other ends are all connected to the blower. A plurality of heating wires are installed one by one on the inner side of the air ducts.

[0021] Compared with the prior art, the soil dryer for soil testing provided by this utility model forms a soil drying flow path through a hot air mechanism, a soil placement box, and a dust collection component. When there are multiple drying compartments, the drying compartments form a partition to avoid cross-contamination of soil samples in each drying compartment during drying. Furthermore, under the guidance and filtration of the dust collection component in each drying compartment, soil powder carried by the hot air can be intercepted to avoid sample loss. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the soil testing dryer provided in this embodiment of the utility model;

[0023] Figure 2 This is a partially exploded view of the soil testing dryer provided in this embodiment of the utility model;

[0024] Figure 3 This is a side view cross-section and hot air flow diagram of the soil testing dryer provided in this embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the soil placement box of a soil testing dryer provided in one embodiment of the present invention;

[0026] Figure 5 This is a three-dimensional rear view of the soil testing dryer provided in this embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the multi-layer drying grid layout of a soil testing dryer provided in one embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the soil placement box of a soil testing dryer provided in another embodiment of the present invention;

[0029] Figure 8 This is a cross-sectional view of the soil placement box of a soil testing dryer provided in another embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Drying chamber; 101. Drying compartment; 102. Empty cavity;

[0032] 2. Hot air mechanism; 201. Hot air outlet; 21. Blower; 22. Air duct;

[0033] 3. Dust collection assembly; 31. Connecting part; 311. Telescopic mechanism; 312. Flexible cylinder; 313. Cover frame; 32. Air duct; 321. Straight section; 322. Flared end; 33. Filter element;

[0034] 4. Soil placement box; 401. Air inlet; 402. Air outlet; 41. Air guide seat; 42. Mesh plate; 43. Cylinder body; 4301. Flat plate; 4302. Ventilation opening;

[0035] 5. Stirring mechanism; 501. Stirring end. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] To address the technical problem that even uniformly distributed hot air can still blow away a small amount of powdery soil, especially when different soil samples are present in different layers, and that cross-contamination between soil samples can occur due to the cross-flow of hot air, this invention provides a soil dryer for testing. This dryer utilizes a hot air mechanism, a soil placement box, and a dust collection component to create a drying flow path for the soil. When multiple drying compartments are used, the compartments act as partitions to prevent cross-contamination of soil samples within each compartment during drying. Furthermore, the dust collection components within each drying compartment guide and filter the soil powder carried away by the hot air, preventing sample loss.

[0038] Please see Figure 1-5 This utility model provides a soil dryer for testing. The soil dryer includes a drying chamber 1, a hot air mechanism 2, at least one dust collection component 3, and at least one soil placement box 4. The drying chamber 1 is provided with at least one drying compartment 101. The hot air mechanism 2 is installed inside the drying chamber 1 and has at least one hot air outlet 201. The hot air outlet 201 is connected to each of the drying compartments 101 in a corresponding manner, and is used to blow hot air from the hot air outlet 201 into each drying compartment 101. The dust collection component 3 is installed on each of the drying compartments 101 in a corresponding manner, guides the hot air to be discharged and filters out soil powder. During hot air drying, it guides the hot air flow... The hot air is directed from the dust collection component 3. During the decoupling process, the dust is provided with a certain settling space and is then intercepted, causing it to fall back into the soil placement box 4 in the drying compartment 101. The soil placement box 4 is inserted into the drying compartment 101 one by one, and a soil sample is placed in the soil placement box 4. The soil placement box 4 is provided with an air inlet 401 and an air outlet 402. The air inlet 401 is connected to the hot air outlet 201 one by one, and the air outlet 402 is connected to the dust collection component 3 one by one, forming a hot air flow path that enters from one side of the soil placement box 4 and exits from the other side, drying the soil in the soil placement box 4.

[0039] In one embodiment, the front of the drying chamber 1 has an opening with a door. Multiple drying compartments 101 are arranged horizontally on the front of the drying chamber 1. Each drying compartment 101 contains a hot air outlet 201 and a dust collection component 3. Soil samples are laid flat in a soil placement box 4 and then inserted into a drying compartment 101. The air inlet 401 is connected to the hot air outlet 201, and the air outlet 402 is connected to the dust collection component 3. The air inlet 401 and air outlet 402 are located at the bottom and top of the soil placement box 4, respectively, forming a hot air flow path penetrating the soil sample from bottom to top. Simultaneously, the dust collection component 3 also acts as a bottom-up guiding channel, directing the hot air to continue flowing upwards.

[0040] This creates a settling space and forms a dust interception at the end of the channel to prevent dust from entering the outside air and to avoid the loss of soil samples.

[0041] It is understood that the drying rack 101 is arranged in a horizontal array in this embodiment, which is only one feasible implementation method. The drying rack 101 can also be arranged in a vertical array, with the dust collection component 3 guiding the hot air out by tilting upwards and laterally. It is not limited to this.

[0042] It should be noted that the drying air speed is set to penetrate the soil at a constant temperature and speed, and only a small amount of dry and fine surface powdery soil particles are blown up.

[0043] In one embodiment, please refer to Figure 1 and Figure 2 In order to cover the soil placement box 4 and discharge it through the hot air, the dust collection assembly 3 includes a docking part 31, an air guide pipe 32 and a filter element 33. The docking part 31, the air guide pipe 32 and the filter element 33 are connected end to end in sequence. The air guide pipe 32 is connected and communicates with the drying grid 101. The air guide pipe 32 runs through the drying grid 101 from bottom to top and communicates with the outside air. The filter element 33 at its end filters the soil powder and the hot air is discharged to the outside.

[0044] Understandably, the connector 31 is attached to the top of the soil placement box 4 to form a sealed cover, and a detachable connection structure such as a pressing structure or a snap-fit ​​can be used.

[0045] It should be noted that the filter element 33 can be a filter component such as a HEPA filter that can intercept dried soil powder, and the filter element 33 and the air duct 32 are detachably connected for easy replacement and cleaning.

[0046] In one embodiment, please refer to Figure 1 and Figure 3To form a specific pressing and sealing structure, the connecting member 31 includes a telescopic mechanism 311, a flexible cylinder 312, and a sealing frame 313. The two ends of the flexible cylinder 312 are respectively connected to the sealing frame 313 and the air duct 32. The size of the sealing frame 313 matches the size of the soil placement box 4. The telescopic mechanism 311 is installed on the air duct 32. The telescopic end of the telescopic mechanism 311 is connected to the sealing frame 313. The telescopic mechanism 311 drives the sealing frame 313 to extend and retract, pressing it downward onto the soil placement box 4 to form a seal.

[0047] Understandably, the flexible cylinder 312 can be made of a compressible and stretchable cylinder such as a flexible rubber sleeve or a corrugated folded tube, and can extend and retract synchronously with the extension and retraction of the telescopic mechanism 311.

[0048] It should be noted that the telescopic mechanism 311 can be a device with telescopic function, such as an electric push rod.

[0049] Furthermore, in order to gradually reduce the air velocity and improve the settling effect of powder during the upward discharge of hot air, the diameter of the air guide pipe 32 at one end near the docking member 31 is smaller than the diameter at the other end. As the pipe diameter gradually increases, the airflow velocity will gradually decrease while the flow rate remains constant. After the airflow velocity decreases, the airflow resistance on the particles is reduced, while the gravity effect is relatively enhanced, and the particles are more likely to settle under the action of gravity.

[0050] More specifically, the air duct 32 includes a straight section 321 and a flared section 322. The straight section 321 is connected to the flared section 322. The other end of the straight section 321 is connected to the connector. The other end of the flared section 322 is connected to the filter element 33. The flared section 322 has a structure that expands outward from bottom to top.

[0051] Understandably, the conical surface of the flared mouth 322 also allows powder to slide down the inclined surface.

[0052] Furthermore, in order to cooperate with the telescopic movement of the telescopic mechanism 311, a stirring mechanism 5 that can be inserted into the soil sample is provided. Specifically, the stirring mechanism 5 is installed on the inner side of the cover frame 313 by a bracket, and the stirring mechanism 5 has a stirring end 501 for stirring the soil.

[0053] Understandably, the mixing mechanism 5 includes a drive motor and a mixing rod. The motor drives the mixing rod to agitate the soil at a uniform speed. The agitation disperses the soil particles evenly, preventing them from piling up or clumping. It also ensures full contact with hot air, accelerates heat transfer, and improves drying efficiency.

[0054] In one embodiment, please refer to Figure 1 and Figure 6In order to form a multi-layered, horizontally arranged drying rack 101, the drying chamber 1 is provided with an empty cavity 102 corresponding to each layer of drying rack 101. The air guide pipe 32 passes through the drying rack 101 from bottom to top and is inserted into the empty cavity 102. The empty cavity 102 is provided with several holes that connect to the outside of the drying chamber 1. The empty cavity 102 forms the interval area of ​​each layer of drying rack 101 and provides outlet and exhaust of hot air.

[0055] Understandably, each layer can hold the same type of soil sample or different soil samples. Each drying compartment 101 can also hold the same type of soil sample or different soil samples. This allows for the uniform drying of batches of the same type of soil samples, as well as the simultaneous drying of different types of soil samples.

[0056] In one embodiment, please refer to Figure 3 and Figure 4 In order to allow hot air to circulate through the soil sample from bottom to top, the soil placement box 4 includes an air guide seat 41, a mesh plate 42, and a cylinder 43. The mesh plate 42 is connected to the top of the air guide seat 41, and the cylinder 43 is connected to the top of the mesh plate 42. The air inlet 401 is located on the air guide seat 41, and the air outlet 402 is located on the top of the cylinder 43.

[0057] Understandably, the perforated plate has a mesh fabric with pores smaller than the smallest soil particle size, which can hold the soil and allow air to circulate. The appropriate non-absorbent mesh fabric material is selected according to the actual situation, such as geotextile for engineering, mesh fabric for agriculture, standard sieve for laboratory use, etc.

[0058] It should be noted that, in order to ensure sufficient air permeability and allow for air circulation, the pore size of the mesh fabric is not set smaller than the minimum size of soil particles. In this case, some soil particles may pass through the gaps and fall into the air guide seat 41. These soil particles will be collected by the air guide seat 41 and will not affect the drying of the majority of soil particles inside. Furthermore, the soil particles collected by the air guide seat 41 can be poured out from the air inlet 401 later. In addition, after drying, some soil particles may still adhere to the mesh fabric, which can be removed by tapping or brushing. If they are difficult to clean, they can also be cleaned by rinsing.

[0059] In another embodiment, please refer to Figure 7 and Figure 8 Instead of using a mesh plate 42, the bottom of the cylinder 43 is made of a flat plate 4301. Air is guided into the cylinder 43 by opening ventilation openings 4302 on the outer periphery of the cylinder 43, and then comes into contact with the soil for drying. At this time, the air guide seat 41 can be fitted onto the outside of the cylinder 43.

[0060] Understandably, a larger aperture can be used at this time. Although the drying flow is not as good as that of a bottom-to-top drying process, it is less prone to clogging and easier to maintain and clean.

[0061] It should be noted that, regardless of whether the mesh plate 42 or the outer side of the cylinder 43 has openings, the soil should not be compacted too forcefully when it is laid flat. Compaction can easily clog the pores and is not conducive to the circulation of hot air during the drying process.

[0062] In one embodiment, please refer to Figure 4 The diameter of the air guide seat 41 is larger than the diameter of the mesh plate 42, and the air inlet end 401 is located on the side of the air guide seat 41 to facilitate the collection of soil particles that may fall from the mesh openings.

[0063] In one embodiment, please refer to Figure 1 and Figure 5 To avoid temperature loss of hot air due to different flow channel lengths, the hot air mechanism 2 includes a blower 21, heating wires, and air guide pipes 22. Multiple air guide pipes 22 are connected to the drying compartments 101 one by one, and their other ends are all connected to the blower 21. Multiple heating wires are installed one by one on the inner side of the air guide pipes 22. The heating wires are installed corresponding to the drying compartments 101. When the air passes through the position of the drying compartment 101, it is heated individually and enters the soil placement box 4 in the corresponding drying compartment 101, which can reduce the possible temperature loss.

[0064] Understandably, the blower 21 blows air, which is then evenly directed into each drying compartment 101 by the guide pipes 23. Furthermore, the air is heated by the heating wires at the corresponding positions of each drying compartment 101 to form hot air for subsequent hot air drying.

[0065] To better understand this utility model, the following is combined with... Figures 1 to 8The technical solution of this utility model is described in detail as follows: Soil is placed inside the cylinder 43 of the soil placement box 4, laid flat on the mesh plate 42, and inserted into the drying grid 101. The telescopic mechanism 311 presses down on the cover frame 313, pressing it to the top of the cylinder 43 to form a sealed cover. Then, the hot air mechanism 2 is started, and the blower 21 blows air. Under the heating of the electric heating wire, hot air is formed and enters the air guide seat 41 through the hot air outlet 201 and the air inlet 401. It passes through the mesh plate 42 and enters the cylinder 43 to dry the soil. It continues upward, passes through the flexible cylinder 312 and the air guide pipe 32, and is discharged after being filtered by the filter element 33. It has a relatively independent hot air drying flow path and intercepts any dust that may exist. It isolates the cross-contamination that may occur when drying different types of soil at the same time. When there are many types of soil samples and a small quantity, multiple soil samples can be dried efficiently at the same time.

[0066] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A soil dryer for testing, characterized in that, include: The drying chamber has at least one drying compartment. A hot air mechanism is installed inside the drying chamber and has at least one hot air outlet, which is connected to the drying compartments one by one. At least one dust collection component is installed on the drying grid to guide hot air out and filter out soil powder; as well as At least one soil placement box is inserted into the drying compartment in a corresponding manner. The soil placement box is provided with an air inlet and an air outlet. The air inlet is connected to the hot air outlet in a corresponding manner, and the air outlet is connected to the dust collection component in a corresponding manner.

2. The soil dryer for testing according to claim 1, characterized in that, The dust collection assembly includes a docking component, an air duct, and a filter element, which are connected end to end in sequence. The air duct is connected to and communicates with the drying grid.

3. The soil dryer for testing according to claim 2, characterized in that, The docking component includes a telescopic mechanism, a flexible cylinder, and a cover frame. The two ends of the flexible cylinder are respectively connected to the cover frame and the air guide duct. The telescopic mechanism is installed on the air guide duct, and the telescopic end of the telescopic mechanism is connected to the cover frame.

4. The soil dryer for testing according to claim 3, characterized in that, The diameter of the air duct at the end closest to the connector is smaller than the diameter at the other end.

5. The soil dryer for testing according to claim 4, characterized in that, The air duct includes a straight section and a flared section. The straight section is connected to the flared section, the other end of the straight section is connected to the connector, and the other end of the flared section is connected to the filter element.

6. The soil dryer for testing according to claim 3, characterized in that, A mixing mechanism is installed on the inner side of the cover frame via a bracket, and the mixing mechanism has a mixing end for mixing soil.

7. The soil dryer for testing according to claim 2, characterized in that, The drying chamber has an empty cavity corresponding to each drying compartment. The air duct runs from bottom to top through the drying compartment and is inserted into the empty cavity. The empty cavity has several holes that connect to the outside of the drying chamber.

8. The soil dryer for testing according to claim 1, characterized in that, The soil placement box includes an air guide base, a mesh plate, and a cylinder. The mesh plate is connected to the top of the air guide base, and the cylinder is connected to the top of the mesh plate. The air inlet is located on the air guide base, and the air outlet is located on the top of the cylinder.

9. The soil dryer for testing according to claim 8, characterized in that, The diameter of the air guide seat is larger than the diameter of the mesh plate, and the air inlet is located on the side of the air guide seat.

10. The soil dryer for testing according to claim 1, characterized in that, The hot air mechanism includes a blower, heating wires, and air ducts. Multiple air ducts are connected to the drying compartments one by one, and their other ends are connected to the blower. Multiple heating wires are installed on the inner side of the air ducts one by one.

Images