Grain sampling equipment
By using a sampling probe driven by a lead screw motor and a negative pressure suction tube, the problem of insufficient power in the existing technology has been solved, enabling efficient and stable grain sampling inside the container and improving sampling efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2026-03-06
AI Technical Summary
Existing automatic grain samplers lack sufficient power when sampling deep inside containers, resulting in slow insertion speed and affecting sampling efficiency and accuracy.
The sampling probe is driven by two lead screw motors, combined with a negative pressure suction tube and a lifting mechanism. The lead screw motors provide sufficient power to achieve stable insertion and efficient sampling.
It improves sampling efficiency and stability, simplifies the sampling process, and ensures the accuracy and rapid acquisition of grain samples.
Smart Images
Figure CN223976911U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain sampling technology, specifically to a grain sampling device. Background Technology
[0002] As modern logistics demands increasingly higher efficiency and lower costs in transportation, bulk cargo transport is gradually shifting towards container transport, thereby achieving intensive and large-scale logistics. Adopting the "bulk-to-container" model, converting bulk goods into containerized transport, not only significantly reduces the risks of moisture damage, contamination, and theft during transportation but also offers advantages such as lower logistics costs and faster turnover. In recent years, grain, traditionally a bulk cargo, has also increasingly adopted container transport. For customs, the first step in inspecting and testing containerized grain is to take samples of the grain.
[0003] When sampling grain, a sampling probe is usually used. The sampling probe is a hollow tubular structure with a pointed tip at the front end. The tip of the sampling probe is inserted into the grain, and the grain enters the interior of the sampling probe. The sampling probe is then pulled out, and the grain inside the sampling probe is the sample.
[0004] Existing technologies include automated grain samplers where the sampling probe is inserted into the grain for sampling, driven by a powered mechanism. However, the interiors of containers are often deep, especially large containers, and the resistance encountered by the sampling probe increases when sampling from these deeper locations. To overcome this resistance, the automated sampler needs to provide greater thrust. However, existing automated grain samplers often suffer from insufficient power, resulting in slow insertion speeds of the sampling probe, or even failure to reach the predetermined sampling depth. This not only affects sampling efficiency but may also adversely impact sampling accuracy. Utility Model Content
[0005] To address the challenges posed by the deep interior of containers, where sampling at deeper locations results in greater resistance and requires more thrust, existing automatic grain samplers suffer from insufficient power and slow insertion speeds. This invention provides a grain sampling device.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A grain sampling device includes a sampling probe, the outer circumferential surface of which is connected to a sliding mechanism, and the rear end of which is connected to a negative pressure suction tube. The sliding mechanism includes a base, and two lead screw motor structures are connected to the top of the base. Each lead screw motor structure includes a threaded lead screw, and a drive motor is coaxially connected to the end of each threaded lead screw. The drive motor can drive the corresponding threaded lead screw to rotate. An anti-rotation nut is rotatably installed on each threaded lead screw. The two drive motors drive synchronously. The two threaded lead screws and the sampling probe are arranged in parallel. The tops of the two anti-rotation nuts are connected to a connecting plate, and the top of the connecting plate is connected to the outer circumferential surface of the sampling probe.
[0008] Using the above structural design, the sampling probe in this application is driven by two lead screw motors, which can provide sufficient power and achieve high sampling efficiency. In this application, the grain in the sampling probe is sucked away by a negative pressure suction tube, eliminating the need for manual removal. This simplifies the structure, makes sampling more convenient, and further improves sampling efficiency.
[0009] As a preferred implementation method for grain sampling equipment, the two threaded screws are aligned front to back, the two anti-rotation nuts are aligned, and the distance between the sampling probe and the two threaded screws is equal.
[0010] By adopting the above structural scheme, the overall structural balance is improved, and the sampling stability of the sampling probe is enhanced.
[0011] As a preferred implementation of a grain sampling device, both ends of the two threaded screws are rotatably supported on screw support seats, which are installed on the base.
[0012] The above structural design improves the stability of the lead screw.
[0013] As a preferred implementation of a grain sampling device, the front end of the sampling probe is supported on a sampling support base, the sampling support base has a support hole, the sampling probe passes through the support hole, and the sampling support base is installed on the base.
[0014] The above structural design improves the stability of sampling by the sampling probe.
[0015] As a preferred implementation of a grain sampling device, a negative pressure sampler is connected to one side of the base. The negative pressure sampler is connected to a negative pressure suction tube, and a grain outlet is provided at the bottom of the negative pressure sampler.
[0016] Using the above structural design, the negative pressure sampler can generate negative pressure and suck up grain through the negative pressure suction tube during the sampling process.
[0017] As a preferred implementation of a grain sampling device, the bottom of the base is connected to the lifting mechanism, and the bottom of the lifting mechanism is connected to the moving mechanism.
[0018] With the above structural design, the base can be adjusted in height via a lifting mechanism and in position via a moving mechanism, making it easy to adjust the sampling position.
[0019] As a preferred implementation method for grain sampling equipment, the lifting mechanism is a scissor-type hydraulic lifting mechanism.
[0020] With the above structural design, the scissor-type hydraulic lifting mechanism provides stable lifting.
[0021] As a preferred implementation of a grain sampling device, the moving mechanism includes a frame with casters connected to the bottom of the frame.
[0022] The above structural design makes the chassis easy to move.
[0023] As a preferred implementation of a grain sampling device, the four edges of the frame are connected to the outer wall of the support legs, and the bottom of the support legs can extend and retract vertically.
[0024] By adopting the above structural design, the support legs can raise and support the frame, ensuring that the frame does not shake or move during the sampling process, thus improving the stability of the sampling.
[0025] As a preferred implementation of grain sampling equipment, a handrail is connected to one side of the frame.
[0026] With the above structural design, the handrail frame facilitates manual movement of the vehicle frame.
[0027] The beneficial effects of this utility model include:
[0028] The sampling probe in this application is driven by two lead screw motors, providing sufficient power and achieving high sampling efficiency. The grain in the sampling probe is sucked away by a negative pressure suction tube, eliminating the need for manual removal. This simplifies the structure, makes sampling more convenient, and further improves sampling efficiency. Attached Figure Description
[0029] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.
[0030] Figure 1 This is a three-dimensional structural diagram of a grain sampling device according to a specific embodiment of the present invention. Figure 1 ;
[0031] Figure 2 This is a three-dimensional structural diagram of a grain sampling device according to a specific embodiment of the present invention. Figure 2 ;
[0032] Figure 3 This is a top view of a grain sampling device according to a specific embodiment of the present invention.
[0033] List of components and reference numerals:
[0034] 1. Sampling probe; 2. Threaded screw; 3. Screw support seat; 4. Anti-rotation nut; 5. Connecting plate; 6. Sampling support seat; 7. Negative pressure suction tube; 8. Negative pressure sampler; 9. Frame; 10. Casters; 11. Support legs; 12. Handrail frame; 13. Drive motor; 14. Lifting mechanism; 15. Coupling. Detailed Implementation
[0035] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0036] Reference Figure 1-3 This embodiment proposes a grain sampling device, including a sampling probe 1, which is a hollow tubular structure with a pointed tip at its front end. The outer circumferential surface of the sampling probe 1 is connected to a sliding mechanism. The sliding mechanism includes a base, and two lead screw motor structures are connected to the top of the base. In this embodiment, the lead screw motor structures are ball screw motor structures, and each lead screw motor structure includes a threaded lead screw 2. The two threaded lead screws 2 are aligned front to back, and the outer circumferential surfaces at both ends of the two threaded lead screws 2 are smooth surfaces without threads. Both ends of the two threaded lead screws 2 are rotatably supported on a lead screw support seat 3, which is mounted on the base. The two threaded lead screws 2 and the sampling probe 1 are arranged parallel to each other, with the sampling probe 1 located above the two threaded lead screws 2, and the distance between the sampling probe 1 and the two threaded lead screws 2 is equal. The end of each threaded lead screw 2 is coaxially connected to a drive motor 13 via a coupling 15. The drive motor 13 can drive the corresponding threaded lead screw 2 to rotate, and the two drive motors 13 drive synchronously. Each threaded screw 2 is rotatably equipped with an anti-rotation nut 4. When the threaded screw 2 rotates, the anti-rotation nut 4 can move along the axial direction of the threaded screw 2 without rotating. The two anti-rotation nuts 4 are aligned, that is, the line connecting the two anti-rotation nuts 4 is perpendicular to the threaded screw 2. The top of both anti-rotation nuts 4 is connected to the connecting plate 5, and the top of the connecting plate 5 is connected to the outer peripheral surface of the sampling probe 1.
[0037] The front end of the sampling probe 1 is supported by a sampling support base 6, which has a support hole through which the sampling probe 1 passes. The support hole supports the forward and backward movement of the sampling probe 1, making its movement more stable. The sampling support base 6 is installed on the base. The rear end of the sampling probe 1 is connected to a negative pressure suction tube 7. A negative pressure sampler 8 is connected to one side of the base and is connected to the negative pressure suction tube 7. The bottom of the negative pressure sampler 8 has a switchable grain outlet. The negative pressure sampler 8 is equipped with a centrifugal fan. When the grain outlet is closed and the centrifugal fan is turned on, a negative pressure is generated in the negative pressure sampler 8, which allows the grain in the sampling probe 1 to be sucked into the negative pressure sampler 8 through the negative pressure suction tube 7. The sampled grain can be obtained by opening the grain outlet.
[0038] The bottom of the base is connected to the lifting mechanism 14, and the bottom of the lifting mechanism 14 is connected to the moving mechanism. The lifting mechanism 14 is a scissor-type hydraulic lifting mechanism 14, which is an existing structure. The moving mechanism includes a frame 9, with casters 10 connected to the bottom of the frame 9. The four edges of the frame 9 are connected to the outer wall of the support legs 11, and the bottom of the support legs 11 can extend and retract vertically. A handrail 12 is connected to one side of the frame 9.
[0039] The working principle of this embodiment is as follows:
[0040] Select a sampling point on the grain in the container. Manually move the frame 9 to a suitable position and adjust the support legs 11 so that the bottom of the support legs 11 touches the ground, thus supporting the frame 9. Adjust the lifting mechanism 14 to adjust the sampling probe 1 to a suitable height. Start the negative pressure sampler 8, which simultaneously starts the two lead screw motors. The two threaded lead screws 2 rotate synchronously, and the anti-rotation nut 4 drives the sampling probe 1 forward, gradually inserting the sampling probe 1 into the grain at the front. When the sampling probe 1 has penetrated to the required depth, the two drive motors 13 reverse, and the sampling probe 1 is withdrawn from the grain at the front. Continue to select the next sampling point and repeat the above process until the sampling of the last sampling point is completed. Turn off the negative pressure sampler 8 and open the grain outlet to obtain the sampled grain.
[0041] This embodiment is applicable to sampling operations for grain transported in containers.
[0042] This embodiment is applicable to sampling granular or powdered grains, such as wheat, flour, and soybeans.
[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A grain sampling apparatus comprising a sampling spike (1), the outer periphery of the sampling spike (1) being connected to a sliding mechanism, characterised in that, The rear end of the sampling drill (1) is communicated with the negative pressure suction pipe (7); the sliding mechanism comprises a base, the top of the base is connected with two screw rod motor structures, each screw rod motor structure comprises a threaded screw rod (2), the end of each threaded screw rod (2) is coaxially connected with a driving motor (13), the driving motor (13) can drive the corresponding threaded screw rod (2) to rotate, the anti-rotation nut (4) is rotatably installed on each threaded screw rod (2), the two driving motors (13) are synchronously driven, the two threaded screw rods (2) and the sampling drill (1) are arranged in parallel, the top of each anti-rotation nut (4) is connected with the connecting plate (5), and the top of the connecting plate (5) is connected with the outer circumferential surface of the sampling drill (1).
2. A grain sampling apparatus according to claim 1, wherein, The two threaded screw rods (2) are aligned in front and back, the two anti-rotation nuts (4) are aligned, and the distance between the sampling drill (1) and the two threaded screw rods (2) is equal.
3. A grain sampling apparatus according to claim 1, wherein, Both ends of the two threaded screw rods (2) are rotatably supported on the screw rod support seat (3), and the screw rod support seat (3) is installed on the base.
4. A grain sampling apparatus according to claim 1, wherein, The front end of the sampling drill (1) is supported on the sampling support seat (6), the sampling support seat (6) is provided with a supporting hole, the sampling drill (1) passes through the supporting hole, and the sampling support seat (6) is installed on the base.
5. A grain sampling apparatus according to claim 1, wherein, One side of the base is connected with the negative pressure sampler (8), the negative pressure sampler (8) is communicated with the negative pressure suction pipe (7), and the bottom of the negative pressure sampler (8) is provided with a grain outlet.
6. A grain sampling apparatus according to claim 1, wherein, The bottom of the base is connected with the lifting mechanism (14), and the bottom of the lifting mechanism (14) is connected with the moving mechanism.
7. A grain sampling apparatus according to claim 6, wherein, The lifting mechanism (14) is a scissor type hydraulic lifting mechanism (14).
8. A grain sampling apparatus according to claim 6, wherein, The moving mechanism comprises a vehicle frame (9), and the bottom of the vehicle frame (9) is connected with universal wheels (10) around.
9. A grain sampling apparatus according to claim 8, wherein, The periphery of the vehicle frame (9) is connected with the outer wall of the supporting leg (11), and the bottom end of the supporting leg (11) can be vertically telescopic.
10. A grain sampling apparatus according to claim 8, wherein, One side of the vehicle frame (9) is connected with a handrail frame (12).