A sample screening device for soil testing

Abstract

The utility model discloses a kind of sample screening devices for soil detection, belong to screening device technical field, a kind of sample screening devices for soil detection, including box, further include: box is equipped with hopper, reciprocating motion is slidably connected with screening frame in box, the transition hopper is equipped in the below of screening frame;The lower portion of transition hopper is equipped with interface component, and the material receiving frame that interface component is placed is received and is screened to fall soil sample;When material receiving frame receives certain amount of soil sample, interface component is plugged to the discharge port of transition hopper bottom;Interface component includes lifting plate, support plate, compression spring, connecting rod and sliding baffle, and compression spring is connected between lifting plate and support plate;The utility model reduces the weight of screening equipment whole, it is convenient to carry out, saves the step of manual rationing and subpackaging soil sample, saves the time of processing sample, and can be adjusted according to different needs.

Description

Technical Field

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

[0002] Soil testing is a crucial step in assessing soil quality and environmental safety through scientific methods. It encompasses physical, chemical, and biological characterization analysis, and tests include pH value, nutrient content, heavy metal pollution, organic matter ratio, and microbial community structure. After collecting representative soil samples, professionals pre-process them through air drying, grinding, and sieving. Then, they use precision instruments such as spectrometers and atomic absorption spectrometers to determine the indicators. The test results provide data support for agricultural fertilization, pollution remediation, and land planning. For example, they can guide the improvement of saline-alkali land or the safety assessment of industrial land. Regular monitoring can provide early warning of soil degradation risks, thus contributing to ecological protection and sustainable development.

[0003] When conducting soil sampling, sampling personnel typically need to manually sieve out impurities such as sand and gravel. Afterward, they must roughly quantify and package the sieved soil according to actual needs. However, if this series of operations relies entirely on manual labor, it is not only cumbersome and labor-intensive, but also significantly reduces the overall efficiency of soil sampling. Therefore, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a soil testing sample screening device that can overcome or at least partially solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A soil sample sieving device includes a housing and further includes: a hopper on the housing, a slidably connected sieve frame that can reciprocate inside the housing, a transition hopper below the sieve frame; a receiving component below the transition hopper, on which a receiving frame for receiving soil samples falling during sieving is placed; when the receiving frame receives a certain amount of soil sample, the receiving component seals the outlet at the bottom of the transition hopper.

[0007] Preferably, the receiving assembly includes a lifting plate, a support plate, a compression spring, a connecting rod, and a sliding baffle. The compression spring is connected between the lifting plate and the support plate. The lifting plate and the sliding baffle are rotatably connected to the connecting rod via a rotating shaft. When the lifting plate is pressed down, it pulls the sliding baffle to move towards the center and closes, thus blocking the discharge port at the bottom of the transition hopper.

[0008] Furthermore, the housing is provided with a limiting clamp, and the sliding baffle is slidably connected in the limiting clamp.

[0009] Furthermore, the housing is equipped with a limiting rod and a limiting stop rod. The support plate is slidably connected to the limiting rod. An adjusting bolt is rotatably connected to the support plate. The adjusting bolt is connected to the housing through threads. A scale is provided at the bottom of the housing. When the distance between the support plate and the lifting plate is reduced, the weight that the lifting plate needs to bear to pull the sliding stop to complete the closure increases.

[0010] Furthermore, the sliding baffle is provided with a fixing rod, one of which is rotatably connected to a limit block.

[0011] Preferably, the screening frame is provided with a sliding rod, and the box body is provided with a sliding groove, and the sliding rod is slidably connected in the sliding groove.

[0012] Preferably, a drive gear and a driven gear are rotatably connected to the housing, the drive gear meshes with the driven gear, and a rocker arm is connected to the drive gear.

[0013] Furthermore, the screening frame is provided with a limiting groove, and the driven gear is provided with an eccentric rod, which is slidably connected to the limiting groove.

[0014] Compared with the prior art, the present invention provides a sample sieving device for soil testing, which has the following beneficial effects:

[0015] 1. This soil testing sample sieving device, by setting up a receiving component, a transition hopper, and an adjusting bolt, can automatically seal the discharge hopper at the bottom of the transition hopper after receiving soil samples within a roughly weight range, thereby automatically obtaining soil samples within a roughly weight range. This eliminates the need for manual quantitative dispensing, saves sample processing time, and can be adjusted according to different needs.

[0016] 2. This soil testing sample sieving device, by setting up a rocker arm, a drive gear, a driven gear, and a sieving frame, enables the soil to be sieved manually, reducing the overall weight of the equipment and making it convenient to carry when going out.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model reduces the overall weight of the screening equipment, making it convenient to carry when going out. It eliminates the step of manually quantitatively dispensing soil samples, saves sample processing time, and can be adjusted according to different needs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a soil testing sample sieving device proposed in this utility model;

[0019] Figure 2 This is a cross-sectional view of a soil testing sample sieving device proposed in this utility model;

[0020] Figure 3 This utility model proposes a sample sieving device for soil testing. Figure 2 Enlarged structural diagram of section A;

[0021] Figure 4 This is a schematic diagram of the bottom structure of a soil testing sample sieving device proposed in this utility model;

[0022] Figure 5 This utility model proposes a sample sieving device for soil testing. Figure 4 Enlarged structural diagram of section B;

[0023] Figure 6 This is a schematic diagram of the receiving component in a soil testing sample sieving device proposed in this utility model;

[0024] Figure 7 This is a schematic diagram of the driven gear part in a soil testing sample screening device proposed in this utility model.

[0025] In the diagram: 1. Box body; 11. Feed hopper; 13. Scale; 14. Transition hopper; 15. Limiting rod; 16. Limiting stop rod; 17. Sliding groove; 2. Receiving assembly; 21. Lifting plate; 22. Support plate; 23. Compression spring; 24. Adjusting bolt; 25. Connecting rod; 26. Sliding baffle; 261. Fixed rod; 262. Limiting block; 27. Limiting clamp; 3. Screening frame; 31. Sliding rod; 32. Limiting groove; 33. Driven gear; 331. Eccentric rod; 34. Driving gear; 341. Rocker arm; 4. Receiving frame. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0028] Example 1: Refer to Figures 1-7A soil testing sample sieving device includes a housing 1, and further includes: a hopper 11 on the housing 1, a slidably connected sieve frame 3 that can reciprocate inside the housing 1, a transition hopper 14 below the sieve frame 3; a receiving component 2 below the transition hopper 14, and a receiving frame 4 for receiving soil samples falling from the sieve on the receiving component 2; when the receiving frame 4 receives a certain amount of soil sample, the receiving component 2 seals the outlet at the bottom of the transition hopper 14.

[0029] The difference between this invention and common screening devices lies in the fact that a transition hopper 14 and a receiving component 2 are set below the screening frame 3. This allows for the quantitative collection of soil after screening. When the collected soil reaches a certain weight, the receiving component 2 can seal the discharge port at the bottom of the transition hopper 14, thereby stopping sample collection. The user can then remove the receiving frame 4 to obtain a soil sample with a weight within a certain range. The weight of the soil sample collected corresponding to the sealing of the discharge port at the bottom of the transition hopper 14 by the receiving component 2 can be changed, thus enabling the collection of soil samples of different weights according to different needs. This eliminates the cumbersome steps from screening to quantitative sample differentiation, improving the efficiency of sample processing.

[0030] Example 2: Refer to Figures 1-7 The assembly is basically the same as in Embodiment 1, but with a further improvement: the receiving component 2 includes a lifting plate 21, a support plate 22, a compression spring 23, a connecting rod 25, and a sliding baffle 26. The compression spring 23 is connected between the lifting plate 21 and the support plate 22. The lifting plate 21 and the sliding baffle 26 are rotatably connected to the connecting rod 25 via a rotating shaft. When the lifting plate 21 is pressed down, it pulls the sliding baffle 26 to move towards the center and close, blocking the discharge port at the bottom of the transition hopper 14. A limiting clamp 27 is provided on the housing 1, and the sliding baffle 26 is slidably connected in the limiting clamp 27. A limiting rod 15 and a limiting stop rod 16 are provided inside the housing 1. The support plate 22 is slidably connected to the limiting rod 15. An adjusting bolt 24 is rotatably connected to the support plate 22, and the adjusting bolt 24 is threaded to the housing 1. The box 1 is connected to a scale 13 at the bottom. When the distance between the support plate 22 and the lifting plate 21 is reduced, the lifting plate 21 descends until the weight required to pull the sliding baffle 26 to close increases. The sliding baffle 26 is provided with a fixed rod 261, one of which is rotatably connected to a limit block 262. The screening frame 3 is provided with a sliding rod 31. The box 1 is provided with a sliding groove 17, and the sliding rod 31 is slidably connected in the sliding groove 17. The box 1 is rotatably connected with a drive gear 34 and a driven gear 33, which mesh with each other. The drive gear 34 is connected to a rocker arm 341. The screening frame 3 is provided with a limit groove 32, and the driven gear 33 is provided with an eccentric rod 331, which is slidably connected to the limit groove 32.

[0031] In this utility model, such as Figure 6 As shown, the support plate 22 provides support for the entire receiving assembly 2 and the receiving frame 4. As the receiving frame 4 receives more soil samples, the pressure on the lifting plate 21 increases, causing the lifting plate 21 to descend. The connecting rod 25 is rotatably connected to the sliding baffle 26 and the lifting plate 21 through a rotating shaft. When the lifting plate 21 descends, the connecting rod 25 pulls the sliding baffle 26 to move towards the center and closes it. The upper surface of the sliding baffle 26 is in contact with the lower surface of the transition hopper 14, so that when the sliding baffle 26 is completely closed, it can block the discharge port at the bottom of the transition hopper 14.

[0032] Preferably, the sliding baffle 26 may be provided with rollers, and the sliding baffle 26 is slidably connected to the limiting clamp 27 through the rollers, thereby reducing the friction between the sliding baffle 26 and the limiting clamp 27.

[0033] like Figure 5 As shown, a fixed rod 261 is fixedly connected to the sliding baffle 26, and a limit block 262 is rotatably connected to one of the fixed rods 261. When the sliding baffles 26 on both sides move to the middle to complete the closure, the two fixed rods 261 come together, so that the other fixed rod 261 can be locked and limited by rotating the limit block 262, so that the sliding baffle 26 is always in the closed state, and the user can take the receiving frame 4 out from the lifting plate 21 to collect the soil in the receiving frame 4;

[0034] like Figure 2 and Figure 3 As shown, the adjusting bolt 24 is connected to the housing 1 by threads. By rotating the adjusting bolt 24, the adjusting bolt 24 can be moved in the vertical direction. The adjusting bolt 24 is rotatably connected to the support plate 22, and the support plate 22 is slidably connected to the limiting rod 15. Thus, by rotating the adjusting bolt 24, the support plate 22 can be moved in the vertical direction. The limiting rod 16 is fixedly connected inside the housing 1 to limit the maximum height of the lifting plate 21. Thus, when the support plate 22 rises, the distance between the support plate 22 and the lifting plate 21 decreases. At this time, the pressure required for the lifting plate 21 to fall down again to close the sliding baffle 26 is relatively increased, thereby allowing the receiving frame 4 to collect more soil.

[0035] The bottom of the box 1 is equipped with a scale 13, which allows users to determine the approximate weight of soil that the receiving frame 4 can collect by referring to the scale 13 and the adjusting bolt 24.

[0036] like Figure 7As shown, the driven gear 33 drives the eccentric rod 331 to rotate, so that the eccentric rod 331 slides in the limiting groove 32 and drives the limiting groove 32 and the screening frame 3 to reciprocate, thereby screening the soil sample inside. The user can drive the drive gear 34 to rotate by turning the rocker arm 341, which in turn drives the driven gear 33 to rotate. The drive gear 34 is larger than the driven gear 33, so that the user can achieve the effect of multiple screenings without turning the rocker arm 341 too fast. The manual method can reduce the overall weight of the equipment and make it convenient to carry when going out. When conditions permit, the above drive method can also be replaced with motor drive.

[0037] The top of the box 1 is designed with an opening, which makes it convenient for users to clean the screening frame 3. Users can pour soil samples into the hopper 11 or put soil samples directly into the screening frame 3 from the top of the box 1.

[0038] The side of the box 1 has an openable window, which makes it convenient for users to take out and place the receiving frame 4;

[0039] When using the equipment, the user first rotates the adjusting bolt 24 according to the weight of the soil sample to be filled. Then, the receiving frame 4 is placed on the lifting plate 21, and soil is added into the screening frame 3. The rocker arm is rotated to screen the soil. After the sliding baffle 26 is closed, the limiting block 262 is rotated to lock the fixing rod 261. The receiving frame 4 can then be taken out, the soil sample inside can be bagged, and the receiving frame 4 can be put back on the lifting plate 21. The limiting of the fixing rod 261 can be released, and the soil sample can be collected repeatedly.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sample sieving device for soil testing, comprising a housing (1), characterized in that, Also includes: The box (1) is provided with a feeding hopper (11), and a reciprocating screening frame (3) is slidably connected inside the box (1). A transition hopper (14) is provided below the screening frame (3). Below the transition hopper (14) is a receiving component (2), and a receiving frame (4) for receiving soil samples that have fallen during screening is placed on the receiving component (2). When the receiving frame (4) receives a certain amount of soil sample, the receiving component (2) seals the discharge port at the bottom of the transition hopper (14).

2. The soil sample sieving device according to claim 1, characterized in that, The receiving assembly (2) includes a lifting plate (21), a support plate (22), a compression spring (23), a connecting rod (25), and a sliding baffle (26). The compression spring (23) is connected between the lifting plate (21) and the support plate (22). The lifting plate (21) and the sliding baffle (26) are rotatably connected to the connecting rod (25) via a rotating shaft. When the lifting plate (21) is pressed down, it pulls the sliding baffle (26) to move towards the center and closes, blocking the discharge port at the bottom of the transition hopper (14).

3. The soil sample sieving device according to claim 2, characterized in that, The housing (1) is provided with a limiting clamp (27), and the sliding baffle (26) is slidably connected in the limiting clamp (27).

4. The soil sample sieving device according to claim 3, characterized in that, The housing (1) is provided with a limiting rod (15) and a limiting stop rod (16). The support plate (22) is slidably connected to the limiting rod (15). An adjusting bolt (24) is rotatably connected to the support plate (22). The adjusting bolt (24) is connected to the housing (1) by a thread. A scale (13) is provided at the bottom of the housing (1). When the distance between the support plate (22) and the lifting plate (21) is reduced, the weight required for the lifting plate (21) to descend and pull the sliding stop (26) to complete the closure increases.

5. A soil sample sieving device according to claim 4, characterized in that, The sliding baffle (26) is provided with a fixing rod (261), and a limit block (262) is rotatably connected to one of the fixing rods (261).

6. The soil sample sieving device according to claim 1, characterized in that, The screening frame (3) is provided with a sliding rod (31), and the box (1) is provided with a sliding groove (17), and the sliding rod (31) is slidably connected in the sliding groove (17).

7. A soil sample sieving device according to claim 1, characterized in that, The housing (1) is rotatably connected to a drive gear (34) and a driven gear (33), the drive gear (34) meshing with the driven gear (33), and a rocker arm (341) connected to the drive gear (34).

8. A soil sample sieving device according to claim 7, characterized in that, The screening frame (3) is provided with a limiting groove (32), and the driven gear (33) is provided with an eccentric rod (331), which is slidably connected to the limiting groove (32).

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