Automatic grain multi-sample separating device and operation method

Abstract

The invention discloses an automatic grain multi-sample separation device and an operation method. Characterized in that; the device is provided with a frame body, an inlet for grain sample separation is formed in the top of the frame body, a grain temporary storage box and a sample outlet groove are fixedly installed on the upper portion of an inner cavity of the frame body, and the grain temporary storage box is located below the inlet and communicated with the inlet through a grain conveying channel; two groups of mechanical elevator bucket mechanisms are respectively arranged in the inner cavity of the frame body and correspond to the two sides of the grain temporary storage box and the sample outlet groove, the reciprocating grain pouring action towards the upper end opening of the grain temporary storage box is realized through the mechanical elevator bucket mechanisms, and a material distributing device and a sample receiving box are arranged at the lower end of the inner cavity of the frame body. According to the device, through the integrated design of automatic refining, accurate sample separation and convenient sampling, the technical problem of traditional sample separation is solved, reliable equipment support is provided for standardization, high efficiency and intelligentization of grain quality inspection work, and the device has remarkable practical value and industrial popularization significance.

Description

Technical Field

[0001] This invention relates to the field of grain testing and sampling, specifically to an automatic multi-sample grain sampling device and its operating method. Background Technology

[0002] In the field of grain quality testing, sample sorting is a crucial preliminary step to ensure the accuracy of test results. Its core requirement is to ensure that the sorted samples are sufficiently representative, and that the sorting process is adapted to the demands of large-scale, high-efficiency quality inspection scenarios. Currently, sample sorting in grain quality inspection still mainly relies on traditional manual operations or simple sorting tools. These methods have long suffered from unresolved technical challenges in practical applications, severely hindering the standardization and efficiency of quality inspection work.

[0003] First, traditional sampling methods lack representativeness. Manual sampling typically involves mixing grains by hand, stirring, and pouring, which makes it difficult to ensure uniform distribution of granular grains across different areas. This can lead to localized grain accumulation or compositional differences, resulting in samples that fail to accurately reflect the quality of the entire batch of grain. This lack of representativeness directly causes bias in test results, potentially leading to misjudgments of key indicators such as grain grade, impurity content, and moisture content, impacting subsequent quality control and market circulation decisions.

[0004] Secondly, manual sampling is inefficient and cannot meet the needs of large-scale quality inspection. With the expansion of grain storage and trade, the number of samples that quality inspection agencies need to process daily has increased significantly. In traditional methods, operators need to complete steps such as mixing, weighing, and separating grains one by one. Sampling a single sample is time-consuming. When faced with a large number of sample testing tasks, the sampling process is prone to backlog, resulting in a longer overall quality inspection cycle, which is difficult to adapt to the industry's demand for rapid quality verification.

[0005] Finally, traditional sampling methods rely on a lot of repetitive work, which can easily lead to operator fatigue and further affect the stability of sampling quality. During manual sampling, actions such as stirring, pouring, and dispensing need to be repeated. Prolonged operation can easily lead to physical exhaustion and decreased concentration of operators, which not only increases labor intensity but may also further reduce sampling accuracy due to human error (such as weighing deviation or uneven dispensing), forming a vicious cycle of "low efficiency - poor quality".

[0006] In summary, the shortcomings of existing grain sampling techniques in terms of sample representativeness, operational efficiency, and labor intensity have become bottlenecks restricting the standardization of grain quality inspection. The industry urgently needs a sampling device capable of automatic uniform mixing, precise separation, and efficient operation of grain samples to address the inherent problems of traditional methods, ensure the accuracy of test results, and improve overall quality inspection efficiency. Summary of the Invention

[0007] Therefore, in view of the above-mentioned shortcomings, the present invention provides an automatic multi-sample sorting device and operating method for grains. This device, through its integrated design of automatic uniform mixing, precise sorting, and convenient sampling, not only solves the technical problems of traditional sorting methods but also provides reliable equipment support for the standardization, efficiency, and intelligence of grain quality inspection work, possessing significant practical value and industry promotion significance.

[0008] This invention is implemented as follows: An automatic multi-sample grain sorting device is constructed, characterized in that: the device has a frame, with an inlet for sorting grain at the top; a grain storage box and a sample outlet are fixedly installed in the upper part of the inner cavity of the frame, the grain storage box being located below the inlet, and the two connected by a grain conveying channel; a set of mechanical lifting bucket mechanisms are respectively arranged in the inner cavity of the frame, corresponding to the two sides of the grain storage box and the sample outlet, to achieve a reciprocating grain pouring action to the upper port of the grain storage box; a material dispensing device and a sample receiving box are arranged at the lower end of the inner cavity of the frame.

[0009] According to the present invention, in an automatic multi-sample grain sorting device, the sample receiving box is movably arranged at the lower end of the frame in a drawer-type structure.

[0010] According to the present invention, an automatic multi-sample sorting device for grains comprises a mechanical lifting bucket mechanism including a lifting and tilting bucket, a lead screw, a lifting seat, a guide rod, and a reciprocating lifting motor. The lead screw and guide rod are arranged vertically in the frame, and the lifting seat is inserted through the lead screw and guide rod. The reciprocating lifting motor drives the lifting bucket to achieve reciprocating lifting. A tilting rod is fixed to the bottom of the tilting bucket, and a tilting motor is fixedly installed on the outer side of the lifting seat. The end of the tilting rod passes through the lifting seat and is connected to the corresponding tilting motor. The tilting motor drives the tilting bucket to tilt through the tilting rod.

[0011] According to the present invention, an automatic multi-sample grain sorting device comprises a rotating sorting hopper and a fixed sorting disc. A rotating motor for driving the sorting hopper to rotate is provided in the middle of the sorting disc. The sorting hopper itself has an eccentric sorting nozzle. Multiple receiving holes are provided on the sorting disc. A set of retractable bends is provided at each receiving hole, and each set of bends corresponds to a sample receiving box. The rotating motor drives the sorting hopper to rotate on the sorting disc. Utilizing the eccentric structure of the sorting nozzle, when the sorting nozzle rotates to correspond to a receiving hole, a grain sample can be output to the corresponding sample receiving box through the corresponding bend.

[0012] According to the present invention, an automatic multi-sample sorting device for grain has a sampling trough fixed at the lower end of a grain storage box. The bottom of the grain storage box is provided with a baffle that can be controlled to open and close. The inner cavity of the sampling trough is separated by a partition, and the lower left and right sides of the trough have sampling ports, which correspond to the mechanical lifting bucket mechanisms on both sides.

[0013] According to the present invention, an automatic multi-sample grain sorting device is provided, wherein a weighing module is installed at the lower end of the sorting tray to determine the weight of the sample when each sample box is filled.

[0014] According to the present invention, an automatic multi-sample grain sorting device has an indicator light installed on the top of the frame, and a sensor is installed inside the grain storage box to detect the amount of grain being dispensed. Each time, no more than 10 jin (5 catties) of sample can be dispensed. When the grain is too much and covers the sensor, the indicator light will illuminate. The indicator light functions as a power indicator, a running indicator, and an end indicator. Another important function is that it will alert if too much grain is dispensed.

[0015] An operating method for the aforementioned automatic multi-sample grain sorting device is as follows: The baffle is closed, and the grain to be sorted is first fed into the grain storage box from the inlet. Then, the mechanical lifting bucket mechanism is controlled to lift upwards. Specifically, the reciprocating lifting motor is controlled to rotate, driving the tilting bucket upwards to reach the sample outlet position. Then, the baffle is opened, and the grain sample in the grain storage box is lowered and released through the sample outlet of the sample outlet into the tilting bucket. The reciprocating lifting motor is then controlled to rotate, driving the tilting bucket to continue moving upwards until it reaches the upper port position of the grain storage box. The baffle is then closed, and the tilting motor is controlled to operate. The tilting motor drives the tilting bucket to tilt via a tilting rod, allowing the grain sample in the tilting bucket to be poured back into the grain storage box through the upper port, achieving one efficient homogenization operation. Multiple homogenization operations can be performed as needed. Once the grain sample is deemed sufficiently uniform, the reciprocating lifting motor is controlled to rotate, causing the tilting bucket to move upwards to the sample outlet position for receiving the material. Then, the reciprocating lifting motor is controlled to rotate in the opposite direction, causing the tilting bucket to move downwards to the distribution hopper. The tilting motor is then controlled to operate, and the tilting bucket is tilted via the tilting rod to pour the grain sample from the tilting bucket into the distribution hopper. Each bent tube is then aligned with its corresponding sample receiving box, and the rotating motor is controlled to operate, causing the distribution hopper to rotate. When the distribution nozzle rotates to the position corresponding to a receiving hole, a uniform grain sample can be output through the corresponding bent tube into the corresponding sample receiving box. The drawer-type sample receiving box is then removed for sample testing.

[0016] This invention has the following advantages: This automatic multi-sample grain sorting device and operating method provides a systematic solution to the core pain points of traditional grain sorting, achieving significant breakthroughs in sample quality, operational efficiency, labor intensity control, and scenario adaptability. Specific beneficial effects are as follows: First, by implementing measures to ensure high sample uniformity and testing accuracy, the problem of insufficient sample representativeness is addressed. Specifically, the device utilizes a mechanical lifting bucket mechanism with reciprocating grain-pouring motion to achieve 2-3 efficient grain homogenization operations: after the tilting bucket receives the grain, it rises to the upper port of the temporary storage box and then pours back, simulating a cyclic mixing process. Compared to manual stirring, this ensures that the granular grains are thoroughly mixed, avoiding localized component differences. Simultaneously, the dispensing device employs an eccentric dispensing nozzle and multiple receiving holes, coupled with a rotating motor to precisely control the dispensing path, ensuring that each sample originates from the fully homogenized original sample. This eliminates the testing result deviations caused by traditional manual sampling from the source, providing highly representative samples to support the testing of key indicators such as grain grade, moisture content, and impurities.

[0017] Secondly, this application can significantly improve sampling efficiency and adapt to the needs of large-scale quality inspection scenarios. On the one hand, the device achieves full automation of the sampling process: from grain temporary storage and mechanical homogenization to automatic conveying to the sampling device and one-time sampling of multiple samples (such as batch sampling corresponding to multiple sets of sample boxes), there is no need for manual step-by-step stirring, weighing and packaging, and the sampling time for a single sample is shortened by several times compared with traditional methods. On the other hand, the sampling device can simultaneously meet the testing requirements of multiple indicators. After homogenization, one original sample can be accurately divided into multiple qualified samples without repeating the sampling operation, effectively solving the process backlog problem of traditional manual sampling when facing large batches of samples, and significantly improving the overall turnover efficiency of quality inspection.

[0018] Third, this application can reduce the intensity of manual labor and avoid "quality fluctuations caused by repetitive work". The device replaces repetitive manual tasks with an automated structure: a reciprocating lifting motor and a tilting motor drive the tilting bucket to complete lifting, lowering, and dumping of grain, eliminating the need for manual handling or emptying; the drawer-type sample receiving box design allows for sample retrieval without disassembling the device, reducing manual operation steps. Furthermore, during the sampling process, operators only need to perform two simple actions: "putting grain into the inlet" and "removing the sample receiving box," significantly reducing the high-intensity repetitive labor involved in traditional sampling, such as stirring and weighing, avoiding sampling errors caused by operator fatigue, and ensuring the stability of sampling quality.

[0019] Fourth, this application enables precise and controllable sample weight, thereby improving the level of sample standardization. The weighing module installed at the bottom of the dispensing tray can monitor the sample weight in real time when samples are placed into each sample box, ensuring that the weight of each sample meets the quality inspection standards and avoiding the errors that occur with traditional manual weighing. This design upgrades the sampling process from "qualitative sampling" to "quantitative and precise sampling," further promoting the standardization of grain sampling work, meeting the differentiated requirements of different quality inspection items for sample weight, and expanding the applicability of the device.

[0020] Fifth, the implementation structure of this application is stable and reliable, easy to operate, and highly adaptable. The device adopts an integrated frame design, with the screw and guide rod working together to ensure stable lifting of the lifting seat and avoid sample separation failures caused by component misalignment during operation. The sample outlet is divided into two sample outlets on both sides by a partition, which can simultaneously supply material to the mechanical lifting buckets on both sides, improving the material uniformity. The telescopic bend design can flexibly adapt to the position of the sample receiving box, ensuring no spillage of grain samples. The overall structure is simple and easy to maintain, and the operation process does not require professional skills, so it can be quickly promoted and applied in various grain quality inspection scenarios (such as warehousing, trade, and laboratories). Attached Figure Description

[0021] Figures 1-4 This is a schematic diagram of the overall structure of this application; Figures 5-6 This is a schematic diagram of the internal structure of this application; Figure 7 This is a schematic diagram of the top structure of this application; Figures 8-9 This is a schematic diagram of the grain storage box and sample outlet in this application; Figure 10 This is a schematic diagram of the sample outlet structure in this application; Figures 11-12 This is a schematic diagram of the parts of the material distribution hopper and the material distribution plate in this application. Detailed Implementation

[0022] The following will be combined with the appendix Figures 1-12 This invention will be described in detail, and the technical solutions in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] Example 1: This invention provides an automatic multi-sample sorting device for grains, such as... Figures 1-12 As shown, it can be implemented as follows: The device has a frame 1, with a grain sampling inlet 2 at the top of the frame 1. A grain storage box 3 and a sample outlet 4 are fixedly installed in the upper part of the inner cavity of the frame 1. The grain storage box 3 is located below the inlet 2, and the two are connected by a grain conveying channel 5. A set of mechanical lifting bucket mechanisms are respectively arranged in the inner cavity of the frame 1 and on both sides corresponding to the grain storage box 3 and the sample outlet 4. The mechanical lifting bucket mechanisms realize the reciprocating grain pouring action to the upper port 3-1 of the grain storage box 3. A material distribution device and a sample receiving box 6 are arranged at the lower end of the inner cavity of the frame 1.

[0024] In this embodiment, the sample receiving box 6 is movably disposed at the lower end of the frame 1 according to a drawer-type structure.

[0025] In this embodiment, the mechanical lifting bucket mechanism comprises a liftable and tilting bucket 7, a lead screw 8, a lifting seat 9, a guide rod 10, and a reciprocating lifting motor 11. The lead screw 8 and the guide rod 10 are arranged vertically in the frame 1. The lifting seat 9 is inserted through the lead screw 8 and the guide rod 10 and is driven by the reciprocating lifting motor 11 to achieve reciprocating lifting. A tilting rod 12 is fixed to the bottom of the tilting bucket 7. A tilting motor 21 is fixedly installed on the outer side of the lifting seat 9. The end of the tilting rod 12 passes through the lifting seat 9 and is connected to the corresponding tilting motor. The tilting motor 21 drives the tilting bucket 7 to tilt through the tilting rod 12.

[0026] In this embodiment, the dispensing device comprises a rotating dispensing hopper 13 and a fixed dispensing disc 14. A rotating motor 15 for driving the dispensing hopper 13 to rotate is provided at the middle position of the dispensing disc 14. The dispensing hopper 13 itself has an eccentric dispensing nozzle 16. Multiple receiving holes 17 are opened on the dispensing disc 14. A set of retractable bends 18 is provided at each receiving hole 17. Each set of bends 18 corresponds to a sample receiving box 6. The rotating motor 15 is used to drive the dispensing hopper 13 to rotate on the dispensing disc 14. Utilizing the eccentric structure of the dispensing nozzle 16, when the dispensing nozzle 16 rotates to correspond to a receiving hole 17, grain samples can be output to the corresponding sample receiving box 6 through the corresponding bend 18.

[0027] In this embodiment, the sampling trough 4 is fixed at the lower end of the grain storage box 3. The bottom of the grain storage box 3 is provided with a baffle 19 that can be controlled to open and close. The inner cavity of the sampling trough 4 is separated by a partition. The left and right sides of its lower end are respectively provided with sampling ports 4-1, which correspond to the mechanical lifting bucket mechanisms on both sides.

[0028] In this embodiment, a weighing module 20 is installed at the lower end of the dispensing tray 14 to determine the weight of the sample when each sample box 6 is filled.

[0029] An indicator light 21 is installed on the top of the frame 1, and a sensor 22 is installed inside the grain storage box 3 to detect the amount of grain being added. Each time, no more than 10 jin of sample can be added. When the grain is too much and covers the sensor 22, the indicator light 21 will light up. The indicator light 21 has the functions of power indication, operation indication, and end indication. Another important function is that it will alert if too much grain is added.

[0030] Example 2: A sampling operation method using the aforementioned automatic multi-sample grain sorting device; the operation process is as follows: control the closed baffle 19, first send the grain to be sorted from the inlet 2 into the grain storage box 3, then control the mechanical lifting bucket mechanism to lift upwards, specifically control the reciprocating lifting motor 11 to rotate, driving the tilting bucket 7 to move upwards to the sampling port 4-1 position; then control the open baffle 19, lower the grain sample in the grain storage box 3, release it through the sampling port 4-1 of the sampling trough 4 into the tilting bucket 7, then control the reciprocating lifting motor 11 to rotate, driving the tilting bucket 7 to continue moving upwards, so that the tilting bucket 7 reaches the upper port 3-1 position of the grain storage box 3, control the closed baffle 19, then control the tilting motor to work, the tilting motor drives the tilting bucket 7 to tilt through the tilting rod 12, so that the grain sample in the tilting bucket 7 is poured back into the grain storage box 3 through the upper port 3-1, realizing a one-time efficient uniform feeding operation for the sample; depending on the actual situation, the uniform feeding operation can be performed 2-3 times; Once the grain sample is deemed sufficiently uniform, the reciprocating lifting motor 11 is controlled to rotate, causing the tilting bucket 7 to move upwards to the sample outlet 4-1 for receiving. Then, the reciprocating lifting motor 11 is controlled to rotate in the opposite direction, causing the tilting bucket 7 to move downwards to the distribution hopper 13. The tilting motor 21 is then controlled to operate, causing the tilting bucket 7 to tilt via the tilting rod 12, thus pouring the grain sample from the tilting bucket 7 into the distribution hopper 13. Each bent tube 18 is then aligned with its corresponding sample receiving box 6. The rotating motor 15 is then controlled to operate, causing the distribution hopper 13 to rotate. When the distributing nozzle 16 rotates to the position corresponding to a receiving hole 17, a uniform grain sample can be output through the corresponding bent tube 18 into the corresponding sample receiving box 6. The drawer-type sample receiving box 6 is then removed to test the sample.

[0031] In summary, this application addresses three major pain points of traditional sampling methods in grain quality inspection: insufficient sample representativeness, leading to biased test results; low efficiency of manual operation, making it difficult to meet the needs of large-scale testing; and repetitive work accelerating operator fatigue and affecting work quality. The emergence of the automatic grain sampling machine precisely solves these industry problems.

[0032] It simulates a highly efficient grain homogenization process by reciprocating the grain-pouring action of a mechanically lifting bucket, ensuring that the grain samples are thoroughly mixed and have a uniformity far exceeding that of manual sampling, thus guaranteeing the representativeness of the samples and the accuracy of the tests from the source. After homogenization, the samples are automatically transported to a dispensing device, which can accurately dispense four samples at once according to a preset sample weight.

[0033] This design perfectly meets the needs of quality inspection scenarios, allowing a single original sample to simultaneously meet multiple indicator tests without the need for repeated sample separation. This not only significantly reduces manual intervention and the workload of operators, but also increases sample separation efficiency several times over, providing strong support for the standardization and efficiency of grain quality inspection.

[0034] The following is a detailed description of the implementation process, social benefits, and use value of the automatic multi-sample grain sorting device of this application; Patent Implementation Process: The implementation of this automatic multi-sample grain sorting device requires three core stages: device assembly and debugging, actual operation, and quality control and maintenance. Each stage must be combined with the technical characteristics of the device to ensure its feasibility and stability. The specific process is as follows: (I) Equipment Assembly and Commissioning Stage Component assembly: With frame 1 as the core support, first open inlet 2 at the corresponding position on its top, and fix grain storage box 3 and sampling trough 4 on the upper part of the inner cavity to ensure that grain storage box 3 is located directly below inlet 2. The two are sealed and connected through grain conveying channel 5 to prevent grain from spilling; sampling trough 4 is fixed at the lower end of grain storage box 3, and the inner cavity is separated by partition according to design requirements. Sampling ports 4-1 are processed on the left and right sides of the lower end to ensure that sampling ports 4-1 are precisely aligned with the mechanical elevator bucket mechanism to be installed later. Mechanical lifting bucket mechanism installation: On both sides of the inner cavity of the frame 1 corresponding to the grain storage box 3 and the sampling trough 4, fix the lead screw 8 and guide rod 10 vertically respectively. Insert the lifting seat 9 through the lead screw 8 and guide rod 10 to ensure that the lifting seat 9 can slide smoothly along the guide rod 10. Then, connect the reciprocating lifting motor 11 to the lead screw 8 and adjust the matching of the motor rotation direction with the lifting direction of the lifting seat 9. Finally, install the tilting motor on the outer side of the lifting seat 9 and connect the tilting bucket 7 to the tilting motor through the tilting rod 12 at the bottom to ensure that the tilting motor can drive the tilting bucket 7 to achieve a stable 180° tilt. When the tilting bucket 7 is raised to the highest point, it can be aligned with the upper port 3-1 of the grain storage box 3, and when it is lowered to the sampling port 4-1, it can accurately receive the grain. Installation of the dispensing device and auxiliary components: Fix the dispensing plate 14 at the lower end of the inner cavity of the frame 1, and install the rotating motor 15 at its center. Connect the rotating dispensing hopper 13 to the output shaft of the rotating motor 15 to ensure that the dispensing hopper 13 can rotate smoothly on the dispensing plate 14. Make receiving holes 17 on the dispensing plate 14 according to a preset number (e.g., 4). Install a telescopic bend 18 at each receiving hole 17. Adjust the length of the bend so that the outlet end is aligned with the drawer-type sample receiving box 6 below. Finally, install the weighing module 20 at the lower end of the dispensing plate 14 and calibrate the weighing accuracy (error controlled within ±0.1g) to ensure that the sample weight can be fed back in real time. Overall debugging: Put a small amount of simulated grain (such as dried corn kernels or rice kernels) into the grain storage box 3 and test the opening and closing flexibility of the baffle 19; start the mechanical lifting bucket mechanism to verify the continuity of the lifting and turning action of the tilting bucket 7, and ensure that the grain is evenly mixed after 2-3 times of uniform feeding; start the distributing device and check whether the eccentric distributing nozzle 16 of the rotating distributing bucket 13 can accurately align with each receiving hole 17, whether the bent pipe 18 is leak-free, whether the weighing module 20 can display the weight of each sample in real time, and whether the drawer-type sample receiving box 6 can be pulled out smoothly. (II) Actual Operation Phase Preliminary preparation: Clean up any remaining impurities in the device and ensure that the grain conveying channel 5, sample outlet 4, tilting bucket 7, and distributing hopper 13 are unobstructed; set the target sample weight of the weighing module 20 according to the quality inspection requirements (e.g., 50g per sample), push the empty sample receiving box 6 into the corresponding position at the bottom of the frame 1, and ensure that the outlet of the bent pipe 18 is aligned with the opening of the sample receiving box 6. Uniform feeding operation: Control baffle 19 to close, pour the grain to be sampled (e.g., 1kg wheat) into inlet 2, and enter the grain storage box 3 through grain conveying channel 5; start reciprocating lifting motor 11, driving the two side tilting buckets 7 to rise to the sampling port 4-1 position; control baffle 19 to open, and the grain flows evenly into the two side tilting buckets 7 through the two sampling ports 4-1 of the sampling trough 4; after the tilting buckets 7 have finished receiving the material, control baffle 19 to close, and reciprocating lifting motor 11 continues to drive the tilting buckets 7 to rise to the upper port 3-1 of the grain storage box 3; start the tilting motor, and the tilting buckets 7 tilt and pour the grain back into the storage box 3, completing one uniform feeding operation; repeat the uniform feeding operation 2-3 times according to the grain particle size and initial mixing state to ensure that the grain is fully uniform. Sampling Operation: After the uniform material is homogenized, the reciprocating lifting motor 11 is restarted, driving the tilting bucket 7 to descend above the distributing hopper 13; the tilting motor is started, pouring the uniformly homogenized grain in the tilting bucket 7 into the distributing hopper 13; the rotating motor 15 is started, driving the distributing hopper 13 to rotate. When the eccentric distributing nozzle 16 rotates to a certain receiving hole 17, the grain flows through the receiving hole 17 into the corresponding retractable bend 18, and finally into the sample receiving box 6; the weighing module 20 monitors the sample weight in real time. When the preset weight is reached, the distributing speed can be paused or adjusted by rotating the motor 15 to control the amount of material discharged; the distributing nozzle 16 continues to rotate to the next receiving hole 17, repeating the above process until all sample receiving boxes 6 are filled with the target weight of sample; finally, the drawer-type sample receiving box 6 is pulled out to remove the sample for subsequent quality inspection (such as moisture detection and impurity analysis). Post-sampling cleanup: After the sampling is completed, clean the residual grain in the hopper 13, receiving hole 17 and bend 18 to avoid cross-contamination; return the empty sample box 6 to its original position to prepare for the next sampling. (III) Quality Control and Maintenance Phase Daily quality control: Before each sampling, calibrate the weighing module 20 to ensure that the weight error meets the quality inspection standards; periodically extract samples after sampling for manual re-weighing to verify the sampling accuracy; record data such as grain type, number of times of uniform feeding, sampling weight, and operation time for each sampling to form a traceability file for easy investigation of abnormal problems. Regular maintenance: Check the lubrication status of lead screw 8 and guide rod 10 weekly, add special lubricating oil to prevent lifting and jamming; check the operating noise and temperature of the tilting motor, reciprocating lifting motor 11, and rotating motor 15 monthly, and replace worn transmission parts in a timely manner; clean the sensor surface of weighing module 20 quarterly to avoid dust affecting accuracy; disassemble and overhaul the entire device annually, replace aging baffles 19, seals, and other vulnerable parts to ensure long-term stable operation of the device. The social benefits of this application (I) Ensuring food quality and safety, and consolidating the bottom line of people's livelihood. Traditional manual sampling suffers from insufficient sample representativeness, easily leading to substandard grains (such as grains with excessive moisture or pesticide residues) entering the market and threatening food safety. This device, through mechanical homogenization and precise sampling, ensures that each test sample accurately reflects the quality of the entire batch of grain. This allows quality inspection agencies to accurately identify substandard grains, blocking the circulation of problematic grains at the source and providing strong protection for residents' food safety and healthy food consumption. Especially in key stages such as grain procurement, storage, and processing, it can effectively reduce the risk of "inferior grains entering the market" and safeguard public interests. (II) Promote standardization in the grain quality inspection industry and facilitate its standardized development. Traditional manual sampling relies on operator experience, and variations in sampling methods and accuracy among different personnel and institutions lead to a lack of comparability in test results, hindering the standardization process in the industry. This device replaces subjective human judgment with automated operation, standardizing the number of homogenization cycles, sample weight, and operational procedures. This makes the sampling process replicable and traceable across different regions and quality inspection institutions, promoting the transformation of grain sampling from "experience-based" to "standardized." Simultaneously, the widespread application of this device can drive the upgrading and iteration of quality inspection equipment within the industry, forcing quality inspection institutions to improve their operational procedures and quality control systems, thus contributing to the overall improvement of quality and efficiency in the grain quality inspection industry. (III) Optimize labor allocation and reduce the intensity of manual labor. In traditional sample sorting processes, operators are required to repeatedly perform high-intensity, repetitive tasks such as grain handling, stirring, weighing, and packaging, which can easily lead to occupational health problems such as muscle strain and eye fatigue. Furthermore, manual efficiency is low, making it difficult to handle the demand for large-scale sample testing. This device automates the entire sample sorting process, requiring only two simple actions: "grain input" and "sample removal." This significantly reduces repetitive labor, lowers the workload of operators, and avoids occupational health risks. Simultaneously, sample sorting efficiency is increased several times, reducing the need for manpower in quality inspection agencies. This allows labor to be shifted to more core professional aspects such as testing, analysis, and data interpretation, optimizing the industry's human resource allocation and improving overall work efficiency. (iv) It helps to facilitate efficient circulation in the grain industry and reduce resource consumption. In the processes of grain procurement, storage, and trade, the efficiency of sampling and testing directly impacts the speed of grain circulation. Traditional manual sampling is time-consuming, leading to long queues for farmers during procurement, delays in sampling during storage, and extended testing cycles during trade, increasing the risk of grain stockpiling and loss (such as mold growth in humid environments). This device can quickly complete material homogenization and sampling, reducing the sampling time for a single sample by more than 50% compared to traditional methods. This significantly shortens the quality inspection cycle, accelerates the turnover of grain from procurement to circulation, and reduces grain losses due to testing delays. Taking grain procurement as an example, the device can support the sampling needs of hundreds of samples per day, avoiding long waiting times for farmers, while also helping procurement companies quickly screen qualified grain, improving procurement efficiency, and contributing to the efficient operation of the grain industry. The utility value of this application (a) For grain quality inspection agencies: improve testing efficiency and credibility Grain quality inspection agencies at all levels are the core users of the equipment, handling a large number of samples submitted for testing daily from purchasing, storage, and processing enterprises. The application of this equipment brings three core values: First, increased efficiency. Automated sample sorting replaces manual operation, reducing the sorting time for a single batch of samples from the traditional 30 minutes to less than 10 minutes, supporting the processing of over a thousand samples per day and solving the backlog problem during large-scale testing. Second, guaranteed accuracy. Precise control of the mechanical uniformization and weighing modules keeps the sorting error within ±0.1g, significantly improving sample representativeness, avoiding deviations in test results due to sorting issues, and enhancing the reliability of test data. Third, reduced costs. It reduces the need for manual configuration, lowering labor and training costs. Furthermore, the equipment's stable structure and ease of maintenance result in low long-term operating costs. These values ​​help quality inspection agencies improve their service capabilities and industry credibility, better fulfilling their grain quality supervision functions. (ii) For grain purchasing and storage enterprises: reduce operating costs and mitigate quality risks. Grain purchasing and storage companies frequently need to conduct sampling and testing in their daily operations (such as determining grain grade during purchasing and monitoring grain mold during storage). For purchasing companies, the device can quickly complete the sampling and testing of farmers' grain, shortening the purchasing process, reducing farmers' waiting time, and improving purchasing satisfaction. It also avoids the problem of "misclassification" caused by human sampling errors (such as misclassifying high-quality grain as ordinary grain, or vice versa), reducing economic disputes. For storage companies, the device can support regular spot checks, quickly grasp the quality changes of grain in different warehouses, promptly detect problems such as excessive moisture and increased impurities, and take measures such as ventilation and drying in advance to avoid grain mold and loss, reducing storage risks and economic losses. Furthermore, the device is highly versatile and can be adapted to different grains such as wheat, rice, and corn, eliminating the need for dedicated equipment for different grain types and reducing equipment investment costs for enterprises. (III) For grain research and laboratories: Ensuring the accuracy and repeatability of experimental data Research institutes and university laboratories rely on precise and uniform samples to ensure the reliability of experimental data when conducting research on grain quality improvement and processing technology optimization. The device's mechanical homogenization function ensures thorough mixing of experimental samples, avoiding data fluctuations caused by sample inhomogeneity. The weighing module precisely controls the weight of each sample, meeting the varying sample quantity requirements of different experiments (e.g., 10g sample for trace component detection, 50g sample for routine quality testing). Simultaneously, automated operation reduces human interference with the samples (e.g., impurities introduced through manual contact), ensuring sample consistency. These features make the device an important auxiliary tool in grain research, improving the repeatability and comparability of experimental data and facilitating the accurate verification and transformation of research results. (iv) For grassroots grain stations and remote areas: Lower the barriers to use and promote the popularization of technology. Quality inspection conditions at grassroots grain depots and in remote areas are relatively weak, and the professional skills of operators are limited, placing high demands on the ease of operation and maintenance of equipment. The device offers three key advantages: First, it is simple to operate, requiring only button control of the baffles and motor, eliminating the need for specialized technical training and allowing operators to quickly learn how to use it. Second, it boasts a durable structure, with a frame constructed of high-strength steel and robust core components such as the motor and lead screw, adapting to the complex operating environments of grassroots grain depots (such as dust and humidity). Third, it is easy to maintain, with easily damaged parts (such as baffles and bends) requiring no specialized maintenance personnel, thus reducing maintenance costs at grassroots grain depots. The widespread application of this device can promote the dissemination of advanced sampling technology to the grassroots level, narrowing the gap in grain quality inspection technology between urban and rural areas and between different regions.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the 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 invention. Therefore, the 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. An automatic multi-sample sorting device for grains, characterized in that; The device has a frame (1), with an inlet (2) for sampled grains at the top of the frame (1). A grain storage box (3) and a sample outlet (4) are fixedly installed in the upper part of the inner cavity of the frame (1). The grain storage box (3) is located below the inlet (2), and the two are connected by a grain conveying channel (5). A set of mechanical lifting bucket mechanisms are respectively set in the inner cavity of the frame (1) and on both sides corresponding to the grain storage box (3) and the sample outlet (4). The mechanical lifting bucket mechanism realizes the reciprocating grain pouring action to the upper port (3-1) of the grain storage box (3). A material distribution device and a sample receiving box (6) are set at the lower end of the inner cavity of the frame (1).

2. The automatic multi-sample sorting device for grains according to claim 1, characterized in that; The sample receiving box (6) is movably installed at the lower end of the frame (1) according to the drawer-type structure.

3. The automatic multi-sample sorting device for grains according to claim 1, characterized in that; The mechanical lifting bucket mechanism consists of a lifting and tilting bucket (7), a lead screw (8), a lifting seat (9), a guide rod (10), and a reciprocating lifting motor (11). The lead screw (8) and the guide rod (10) are arranged vertically in the frame (1). The lifting seat (9) is inserted through the lead screw (8) and the guide rod (10). The reciprocating lifting motor (11) drives it to achieve reciprocating lifting. The bottom of the tilting bucket (7) is fixed with a tilting rod (12). The outer side of the lifting seat (9) is fixed with a tilting motor (21). The end of the tilting rod (12) passes through the lifting seat (9) and is connected to the corresponding tilting motor. The tilting motor (21) drives the tilting bucket (7) to tilt through the tilting rod (12).

4. The automatic multi-sample sorting device for grains according to claim 1, characterized in that; The material dispensing device consists of a rotating dispensing hopper (13) and a fixed dispensing plate (14). A rotating motor (15) for driving the dispensing hopper (13) to rotate is provided in the middle of the dispensing plate (14). The dispensing hopper (13) itself has an eccentric dispensing nozzle (16). Multiple receiving holes (17) are opened on the dispensing plate (14). A set of retractable bends (18) is provided at each receiving hole (17). Each set of bends (18) corresponds to a sample box (6). The rotating motor (15) is used to drive the dispensing hopper (13) to rotate on the dispensing plate (14). With the eccentric structure of the dispensing nozzle (16), when the dispensing nozzle (16) rotates to correspond to a receiving hole (17), the grain sample can be output to the corresponding sample box (6) through the corresponding bend (18).

5. The automatic multi-sample sorting device for grains according to claim 1, characterized in that; The sample outlet trough (4) is fixed at the lower end of the grain storage box (3). The bottom of the grain storage box (3) is equipped with a baffle (19) that can be controlled to open and close. The inner cavity of the sample outlet trough (4) is separated by a partition. The left and right sides of its lower end have sample outlets (4-1), which correspond to the mechanical lifting bucket mechanisms on both sides.

6. The automatic multi-sample sorting device for grains according to claim 1, characterized in that; A weighing module (20) is installed at the lower end of the distribution plate (14) to determine the weight of the sample when placing it into each sample box (6).

7. The automatic multi-sample sorting device for grains according to claim 1, characterized in that; An indicator light (21) is installed on the top of the frame (1), and a sensor (22) is installed inside the grain storage box (3) to detect the amount of grain being put in. Each time, no more than 10 jin of sample can be put in. When the grain is buried in the sensor (22), the indicator light (21) will light up. The function of the indicator light (21) is power indication, running indication, and ending indication. Another important function is that it will prompt if too much grain is put in.

8. A method for operating the automatic multi-sample grain sorting device as described in claim 1, characterized in that; The operation process is as follows: control the closed baffle (19), first send the grain to be sampled from the inlet (2) into the grain storage box (3), then control the mechanical lifting bucket mechanism to lift upwards, specifically control the reciprocating lifting motor (11) to rotate, driving the tilting bucket (7) to move upwards to reach the sampling port (4-1) position; then control the open baffle (19), lower the grain sample in the grain storage box (3), and release it into the tilting bucket (7) through the sampling port (4-1) of the sampling trough (4), and then control the reciprocating lifting motor (11) to rotate upwards to drive the tilting bucket (7) to move upwards to reach the sampling port (4-1) position; then control the open baffle (19), lower the grain sample in the grain storage box (3), release it through the sampling port (4-1) of the sampling trough (4) into the tilting bucket (7), and then control the reciprocating lifting motor (11) to rotate upwards to drive the tilting bucket (7) to move upwards to reach the sampling port (4-1) position; then control the reciprocating lifting motor (11) to rotate upwards to reach the sampling port (4-1) position. 11) Rotate to drive the tilting bucket (7) to continue moving upward, so that the tilting bucket (7) reaches the upper port (3-1) position of the grain storage box (3), control the closing baffle (19), and then control the tilting motor to work. The tilting motor drives the tilting bucket (7) to tilt through the tilting rod (12) to tilt, so that the grain sample in the tilting bucket (7) can be poured into the grain storage box (3) through the upper port (3-1) to achieve a one-time efficient uniform feeding operation. According to the actual situation, the uniform feeding operation can be carried out (2-3) times. After the grain sample is considered to be sufficiently uniform, the reciprocating lifting motor (11) is controlled to rotate, driving the tilting bucket (7) to move upward to the sample outlet (4-1) for receiving. Then, the reciprocating lifting motor (11) is controlled to rotate in the opposite direction, driving the tilting bucket (7) to move downward to the distribution hopper (13). The tilting motor (21) is controlled to work, and the tilting bucket (7) is tilted by the tilting rod (12) to pour the grain sample in the tilting bucket (7) into the distribution hopper (13). Then, each bent tube (18) is aligned with the corresponding sample receiving box (6). The rotating motor (15) is controlled to work, driving the distribution hopper (13) to rotate. When the distributing nozzle (16) rotates to the position corresponding to a receiving hole (17), a uniform grain sample can be output to the corresponding sample receiving box (6) through the corresponding bent tube (18). The drawer-type sample receiving box (6) is taken out to test the sample.

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