Grain sampler
By introducing a vertical storage tube, metering scale, and rotatable protective structure into the grain sampler, the problems of unsafe use and poor sample volume control have been solved, improving the convenience and safety of the sampler.
Patent Information
- Application Number
- CN202520547195.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-03-26
AI Technical Summary
Existing portable and simple grain samplers suffer from several drawbacks during use, including the lack of protection on the sampling tip, which leads to safety issues, difficulty in pouring samples, and poor control over the sample volume, thus affecting sampling efficiency and quality.
A sampler with a vertical storage tube and a metering scale was designed. It is equipped with a rotatable rotating rod and an arc plate and baffle structure to protect the sampling tip. The stability of the rotating rod is ensured by a limiting groove and a fastening screw. The bottom of the storage tube is equipped with a threaded cap to prevent leakage.
This improved the convenience and safety of the sampling process, ensured the accuracy of the sample quantity and prevented sample leakage, thereby enhancing the operational efficiency and safety of grain sampling.
Smart Images

Figure CN223966298U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain storage engineering technology, specifically to a grain sampler. Background Technology
[0002] When grain is stored in a warehouse, it must undergo strict quality inspection. Only grain that passes the inspection is allowed to be stored. The better the quality of the grain, the lower the probability of quality problems such as mold during storage, and the longer the grain can be stored. Therefore, it is necessary not only to strictly control the quality of the grain entering the warehouse, but also to regularly sample and test each batch of grain during the storage process, including moisture absorption, fatty acid value and oil oxidation value, so as to accurately detect the state of the grain in the warehouse. Currently, portable and simple grain samplers are still widely used in the sampling and testing of stored grain piles. Due to their simple design, these samplers offer advantages such as quick and easy operation and good results. However, in practical applications, they generally suffer from several drawbacks. Firstly, the sampling tip lacks a protective structure, posing a significant risk of injury to workers carrying and using the sampler. Secondly, the sampler requires a large angle of tilting to pour out the sample, making the process time-consuming and laborious. Furthermore, the lack of a measuring scale on the sample dispensing tube makes it difficult to accurately control the amount of grain sample taken. These limitations significantly restrict the use of these samplers. Therefore, it is necessary to further optimize the structure of these portable and simple grain samplers to ensure both efficiency and safety in grain sampling and testing. Utility Model Content
[0003] This invention provides a grain sampler to solve the problems mentioned above.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A grain sampler includes a sampling tube with a pointed tip at one end and a tail tube at the other end. Multiple feed holes are evenly distributed on the sampling tube. A storage tube is connected to the bottom of the sampling tube. A rotating rod is rotatably connected to the side of the tail tube. A fastening screw is provided on the rotating rod. An arc plate is fixedly connected to the side of the rotating rod extending towards the pointed tip, and the arc plate surrounds the bottom side of the pointed tip. A baffle is also fixedly provided on the side of the arc plate.
[0006] Furthermore, a sealing plate is provided between the sampling tube and the tail tube, and the storage tube is vertically arranged at the bottom of the sampling tube near the tip of the sealing plate.
[0007] Furthermore, a mounting base is fixedly provided on the side of the tail tube, and a rotating shaft is rotatably provided on the mounting base. The rotating rod is connected to the mounting base through the rotating shaft.
[0008] Furthermore, a limiting groove is provided on the mounting base, and the fastening screw and the limiting groove are matched.
[0009] Furthermore, the storage tube has graduations on its side wall and a threaded cap is connected to the bottom of the storage tube.
[0010] Furthermore, a connecting block is fixedly provided on the side of the rotating rod extending toward the tip, and the arc plate and the connecting block are fixedly connected.
[0011] Furthermore, the edge of the baffle is fixedly provided with a protective edge.
[0012] Furthermore, a handle is fixedly provided at the top of the tailpipe.
[0013] This utility model has the following beneficial effects:
[0014] The present invention provides a grain sampler that solves the problems of low sampling efficiency and reduced grain quality caused by the lack of protection of the sampling tip, the difficulty in taking out and pouring grain samples, and the poor control of sampling volume in the current process of grain storage and sampling inspection.
[0015] This invention features a vertical, transparent storage tube with a measuring scale at the bottom of the sampling tube. This allows grain samples to be easily and conveniently poured into the storage tube without having to flip the sampling tube at a large angle when taking them out. Furthermore, the measuring scale can be observed to accurately determine the amount of sample taken, effectively improving the convenience and accuracy of grain sampling.
[0016] In this invention, the bottom of the storage tube is equipped with a threaded cap for sealing, which prevents leakage of grain samples during the process of grain sampling and pouring them into the storage tube, thereby effectively ensuring the controllability of grain sampling and the accuracy of the sampling amount.
[0017] This invention features a rotating rod that can limit rotation, which in turn drives an arc plate, edge protector, and baffle to shield and protect the sampling tip. This effectively ensures the safety of the sampler when it is not in operation and greatly improves the convenience and safety of the grain sampler during carrying and use.
[0018] The protective edge provided on the outer edge of the baffle in this utility model can effectively prevent personnel from being injured by collisions from the baffle edge when carrying the grain sampler; at the same time, the arc-shaped design of the arc plate further avoids the risk of injury to personnel from the square angular structure during the carrying and use of the grain sampler, thereby ensuring the safety of the sampler application.
[0019] The limiting groove and fastening screw in this utility model ensure that the rotating rod of the sampler can be tightened by the fastening screw when it rotates to the pointed protection position or out of the protection position, thereby ensuring the stability of the rotating rod protection structure and improving the practicality of the entire grain sampler. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0021] Figure 2 This is a schematic diagram of the structural connection at the mounting base of this utility model.
[0022] Figure 3 This is a schematic diagram of the structural connection at the arc plate of this utility model.
[0023] The meanings of the reference numerals in the attached figures are as follows:
[0024] 1. Sampling tube; 2. Feed port; 3. Pointed tip; 4. Sealing plate; 5. Tail tube; 6. Handle; 7. Storage tube; 8. Scale; 9. Threaded cap; 10. Mounting base; 11. Shaft; 12. Rotating rod; 13. Limiting groove; 14. Fastening screw; 15. Connecting block; 16. Arc plate; 17. Baffle; 18. Edge protector. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0026] like Figure 1-3 As shown, a grain sampler includes a sampling tube 1, one end of which is connected to a pointed tip 3, and the other end of which is connected to a tail tube 5. Multiple feed holes 2 are evenly distributed on the sampling tube 1. A storage tube 7 is connected to the bottom of the sampling tube 1. A rotating rod 12 is rotatably connected to the side of the tail tube 5. A fastening screw 14 is provided on the rotating rod 12. An arc plate 16 is fixedly connected to the side of the rotating rod 12 extending towards the pointed tip 3, and the arc plate 16 surrounds the bottom side of the pointed tip 3. A baffle 17 is also fixedly provided on the side of the arc plate 16.
[0027] A sealing plate 4 is provided between the sampling tube 1 and the tail tube 5, and the storage tube 7 is connected to the bottom of the sampling tube 1, which is vertically arranged on the side of the sealing plate 4 near the tip 3.
[0028] A mounting base 10 is fixedly provided on the side of the tailpipe 5, and a rotating shaft 11 is rotatably provided on the mounting base 10. The rotating rod 12 is connected to the mounting base 10 through the rotating shaft 11.
[0029] The mounting base 10 has a limiting groove 13, and the fastening screw 14 is matched with the limiting groove 13.
[0030] The storage tube 7 has a scale 8 on its side wall and a threaded cap 9 connected to the bottom of the storage tube 7.
[0031] A connecting block 15 is fixedly provided on one side of the rotating rod 12 extending toward the tip 3, and the arc plate 16 and the connecting block 15 are fixedly connected.
[0032] The edge of the baffle 17 is fixedly provided with a protective edge 18.
[0033] A handle 6 is also fixedly installed at the top of the tailpipe 5.
[0034] In practical use, the components are pre-installed according to the diagram. Then, the operator carries the sampler to the grain pile sampling area. The operator checks that the threaded cap 9 is tightened, loosens the fastening screw 14, and simultaneously rotates the rotating rod 12 to 90°, making it perpendicular to the sampling tube 1. This ensures that the rotating rod 12, arc plate 16, baffle 17, and other components do not interfere with the insertion of the pointed tip 3 into the grain pile for sampling. The fastening screw 14 is then tightened and positioned within the limiting groove 13. The operator then inserts the sampling tube 1 into the grain pile using the handle 6 to collect the sample. After sampling, the sampling tube 1 is pulled out and slightly rotated backward at a certain angle. The grain sample is successfully poured and collected into the storage tube 7. During this process, the amount of sample collected into the storage tube 7 can be determined according to the preset amount of sample to be taken, and the amount of sample required can be accurately measured through the scale 8. Then, the threaded cover 9 is opened to release the sample for testing. After the sample is released, the operator tightens the threaded cover 9 again and loosens the fastening screw 14. The rotating rod 12, arc plate 16, baffle 17 and other components are rotated until the tip 3 is facing the protective position. Then, the fastening screw 14 is tightened again. Finally, the entire grain sampler is stored in the storage. The entire grain sampling process of the sampler greatly improves its convenience and safety during carrying and use. Therefore, the grain sampler has good practicality.
Claims
1. A grain sampler, comprising a sampling tube (1), one end of which is connected to a pointed tip (3), and the other end of which is connected to a tail tube (5), wherein a plurality of feed holes (2) are evenly distributed on the sampling tube (1), characterized in that: The bottom of the sampling tube (1) is connected to a storage tube (7), and the side of the tail tube (5) is rotatably connected to a rotating rod (12). The rotating rod (12) is provided with a fastening screw (14). The rotating rod (12) extends toward the side of the tip (3) and is fixedly connected to an arc plate (16). The arc plate (16) surrounds the bottom side of the tip (3). The side of the arc plate (16) is also fixedly provided with a baffle (17).
2. A grain sampler according to claim 1, characterized in that: A sealing plate (4) is provided between the sampling tube (1) and the tail tube (5), and the storage tube (7) is connected to the bottom of the sampling tube (1) which is vertically arranged on the side of the sealing plate (4) near the tip (3).
3. A grain sampler according to claim 2, characterized in that: The tail tube (5) is fixedly provided with a mounting base (10), and a rotating shaft (11) is rotatably provided on the mounting base (10). The rotating rod (12) is connected to the mounting base (10) through the rotating shaft (11).
4. A grain sampler according to claim 3, characterized in that: The mounting base (10) has a limiting groove (13), and the fastening screw (14) and the limiting groove (13) are matched.
5. A grain sampler according to claim 2, characterized in that: The storage tube (7) has a scale (8) on its side wall and a threaded cap (9) is connected to the bottom of the storage tube (7).
6. A grain sampler according to claim 3, characterized in that: A connecting block (15) is fixedly provided on one side of the rotating rod (12) extending toward the tip (3), and the arc plate (16) and the connecting block (15) are fixedly connected.
7. A grain sampler according to claim 1, characterized in that: The edge of the baffle (17) is fixedly provided with a guard (18).
8. A grain sampler according to claim 3, characterized in that: The top of the tail tube (5) is also fixedly provided with a handle (6).