A grain storage area sampling and testing device

Abstract

The utility model relates to a kind of grain storage area sampling detection device, including equipment main body, equipment main body inside is sequentially arranged with mixing and dividing sample module, impurity screening module and quality detection module;The end of equipment main body is also provided with control cabinet, and control cabinet is electrically connected with mixing and dividing sample module, impurity screening module and quality detection module respectively by wire;The mixing and dividing sample module, impurity screening module, quality detection module of the present application are integrated in the same equipment main body, and unified electric control is carried out through control cabinet, and each module sequentially links to form complete detection chain.Sample enters stirring tank and is automatically mixed, to be conveyed to impurity screening module by conveying belt, then qualified sample enters quality detection module and completes detection, finally is collected by packaging bag, without manual intervention sample circulation in whole process, greatly reduce the error and pollution risk caused by human operation, improve the coherence and reliability of detection process.

Description

Technical Field

[0001] This utility model relates to the technical field of grain and oil testing equipment, specifically to a sampling and testing device for grain storage areas. Background Technology

[0002] As a vital strategic resource related to national welfare and people's livelihood, the quality of grain storage directly impacts food security and market supply. During grain storage, factors such as changes in environmental temperature and humidity, and microbial growth can easily lead to quality deterioration. Therefore, scientific and efficient sampling and testing of stored grain is a crucial step in ensuring grain quality. Sampling and testing can not only promptly detect problems such as mold, pests, and aging in grain, but also provide important data for storage management, quality grading, and subsequent processing. Currently, there are many pain points in the grain sampling and testing process. Traditional sampling relies heavily on manual operation, resulting in random sampling point selection, insufficient sample representativeness, and difficulty in reflecting the overall quality of stored grain. In the sample pretreatment stage, manual mixing and separation is not only inefficient but also prone to poor sample uniformity due to improper operation, affecting the accuracy of subsequent test results. Similarly, the impurity screening process also relies on manual screening, which is not only time-consuming and labor-intensive but also has low screening accuracy. Impurity residues can directly interfere with test data, leading to misjudgments.

[0003] In the testing phase, existing technologies suffer from fragmented modules and low integration. Most testing equipment can only perform a single testing function, such as impurity analysis or quality testing. Samples need to be transferred multiple times between different devices, resulting in a cumbersome process that is prone to sample loss and contamination. Furthermore, the testing process lacks automated and coordinated control, leading to poor coordination between stages and low testing efficiency, making it difficult to meet the high-volume, high-frequency testing needs of large grain storage areas. In addition, while some testing equipment possesses certain automation capabilities, it has significant shortcomings in sample quantitative control, continuous multi-batch testing, and data integration, failing to achieve efficient management of the entire process from sampling to result output.

[0004] With the large-scale and intelligent development of the grain industry, higher requirements are placed on the accuracy, efficiency, and automation of sampling and testing. Existing technologies suffer from problems such as the disconnect between sample pretreatment and testing, poor equipment coordination, and complex operations, which have become bottlenecks restricting the upgrading of grain storage quality control.

[0005] Therefore, developing an integrated sampling and testing device that combines functions such as mixing and sampling, impurity screening, and quality testing, and achieves efficient coordination of each step through unified control, is of great significance for improving the automation level of grain storage testing and ensuring testing accuracy and efficiency. Utility Model Content

[0006] Based on the above description, this utility model provides a sampling and testing device for grain storage areas to solve the shortcomings of existing grain testing equipment, which mostly rely on manual operation, have a simple testing structure, require frequent transfer, and affect testing efficiency and the accuracy of sampling and testing results.

[0007] This utility model is achieved through the following technical solution: A sampling and testing device for grain storage areas includes a main body. Inside the main body, a mixing and sampling module, an impurity screening module, and a quality testing module are arranged sequentially. The bottom of the mixing and sampling module is equipped with a conveyor belt, the end of which extends to one side into the impurity screening module. One side of the impurity testing module is equipped with a receiving hopper, the discharge end of which is located above the quality testing module. The bottom of the quality testing module is also equipped with a sealing bag. The end of the main body is also equipped with a control console, which is electrically connected to the mixing and sampling module, the impurity screening module, and the quality testing module via wires.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the mixing and sampling module includes a mixing tank located on the top of the main body of the equipment. The mixing tank has a stirring shaft inside, and a stirring motor is also provided on the top of the mixing tank and is connected to the stirring shaft for transmission. The bottom of the mixing tank is provided with a discharge pipe that extends vertically downward and has its bottom opening located directly above the conveyor belt. A first weighing sensor is also provided on the inner bottom surface of the mixing tank.

[0010] Furthermore, the impurity screening module includes screen plate A, screen plate B and guide plate, and the screen plate A, screen plate B and guide plate are arranged vertically at intervals, and the screen plate A and guide plate are respectively inclined towards both sides of the main body of the equipment, and the two sides of the main body of the equipment are also provided with impurity discharge ports.

[0011] Furthermore, both the screen plate A and the screen plate consist of a fixed frame and a screen. The fixed frame has a buffer seat on its side wall. The buffer seat is fixedly connected to the inner wall of the main body of the equipment by bolts. The fixed frame also has a connecting rib plate inside. The connecting rib plate is fixedly connected to the bottom surface of the screen. A vibration motor is also installed at the bottom of the connecting rib plate through a motor mount.

[0012] Furthermore, one side of the storage hopper extends upward at an angle and is positioned close to the end of the screen plate B, and the end of the screen plate B converges towards the center and is provided with protective plates on both sides. The bottom opening of the storage hopper is also provided with an electromagnetic valve and a second weighing sensor, and the electromagnetic valve is electrically connected to the control console via a wire.

[0013] Furthermore, the quality inspection module includes an odor detection unit and a color detection unit. The color detection unit includes cameras and lights located on both sides of sieve B. The cameras and lights are fixedly connected to the inner wall of the main body of the equipment via brackets. The main body of the equipment is also equipped with exhaust fans on both sides. The suction pipes of the exhaust fans are connected to the inside of the main body of the equipment and are arranged at intervals close to the sides of the cameras and lights. The odor detection unit is located below the storage hopper and is aligned vertically with the bottom opening of the storage hopper.

[0014] Furthermore, the odor detection unit includes a connecting seat disposed inside the main body of the device. The top of the connecting seat is provided with a rotating platform, and the connecting seat is also provided with a servo motor and fixedly connected to the bottom of the rotating platform. The top surface of the rotating platform is surrounded by multiple mounting slots, and a measuring cup is fixed in each mounting slot. The top of the measuring cup is provided with a feed inlet, and a valve is provided on the feed inlet. The top of the measuring cup is also provided with an electronic nose.

[0015] Furthermore, each of the measuring cups is provided with a discharge port at the bottom, and the discharge port is provided with a discharge valve, and the discharge port extends downward and extends to the top of the packaging tape.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. This application improves upon existing grain testing equipment by integrating the mixing and sampling module, impurity screening module, and quality testing module into a single main body of equipment. These modules are controlled electrically via a control console, and are sequentially linked to form a complete testing chain. From the moment the sample enters the mixing tank for automatic mixing, to its conveyor belt transfer to the impurity screening module, and then to the qualified sample entering the quality testing module for testing, and finally collected in a sealed bag, the entire process requires no manual intervention in sample flow. This significantly reduces errors and contamination risks caused by human operation, and improves the continuity and reliability of the testing process. 2. The quality inspection module integrates both color and odor detection units, enabling multi-dimensional evaluation of grain quality. The color detection unit acquires images using cameras on both sides under illumination, and a fan promptly removes dust interference to ensure clear and stable images, providing high-quality data for color analysis. The odor detection unit employs an electronic nose combined with a rotating stage design. Multiple measuring cups on the rotating stage allow for continuous sampling and testing of the same batch. A servo motor drives the rotating stage for precise positioning, ensuring consistent testing conditions for each sample and significantly improving the repeatability and accuracy of odor detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main body of the device in this embodiment; Figure 2This is a schematic diagram of the internal structure of the main body of the device in this embodiment; Figure 3 This is a schematic diagram of the impurity screening module in this embodiment; Figure 4 This is a schematic diagram of the structure of screen plate A in this embodiment; Figure 5 This is a schematic diagram of the quality detection module in this embodiment; Figure 6 This is a schematic diagram of the internal structure of the mixing tank in this embodiment; The components include: 1. Main body of the equipment; 2. Control console; 3. Mixing and sampling module; 31. Mixing tank; 32. Mixing motor; 33. Mixing shaft; 4. Impurity screening module; 41. Screen plate A; 42. Screen plate B; 43. Guide plate; 44. Fixing frame; 45. Vibration motor; 5. Quality inspection module; 51. Odor detection unit; 511. Connecting seat; 512. Rotary table; 513. Measuring cup; 514. Electronic nose; 52. Color detection unit; 6. Exhaust fan; 7. Conveyor belt; 8. Storage hopper. Detailed Implementation

[0018] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0020] Combination Figure 1-6 As shown, a sampling and testing device for a grain storage area includes: The main body of the equipment 1 is rectangular and serves as the outer casing of the entire grain detection device. Console 2, located on one side of the main body of the equipment 1, serves as the control center for the entire testing equipment. It can be an integrated industrial control terminal with a touch screen, such as a human-machine interface + PLC combination from Weintek or Kunlun Tongtai, so that staff can adjust the single sampling quantity and the number of sampling groups according to actual needs. The mixing and sampling module 3 is located inside the main body 1 of the equipment and is used to perform preliminary mixing of the input grains to ensure the uniformity of subsequent testing and avoid distortion of test results due to local deviations in sample characteristics. Impurity screening module 4 is located inside the main body 1 of the equipment and close to the side of the mixing and sampling module 3. It is used to screen the mixed grains. Through a three-layer screening method, namely the upper, middle and lower three-layer structure, impurities larger than grain particles and smaller than grain particles are screened out respectively, thereby detecting the impurity content of the grains. The quality inspection module 5 includes an odor detection unit 51 and a color detection unit 52. The color detection unit 52 is located in the middle layer of the impurity screening module 4 and is used to quickly detect the grain after it has been screened and spread out, in conjunction with a high-resolution camera, light, and AI algorithms. The odor detection unit 51 is located near the lower side of the impurity screening module 4 and is used to sample the screened grain in groups for simultaneous comparative experiments to ensure the accuracy of the test results.

[0021] Specifically, in this embodiment, the mixing and sampling module 3 includes a mixing tank 31 located on the top of the main body 1. A stirring motor 32 is installed on the top of the mixing tank 31 with its output end facing vertically downward. A stirring shaft 33 is connected inside the mixing tank 31. At the same time, a feed inlet is provided on the side wall of the mixing tank 31. The grain input into the tank is stirred and mixed by the spiral blades on the side wall of the stirring shaft 33. Then, the opening at the bottom of the mixing tank 31 is opened to transport the grain to the next process.

[0022] To facilitate the transport of the grain, a conveyor belt 7 should be installed inside the main body 1 of the equipment. The conveyor belt 7 is located at the bottom of the mixing tank 31 and will horizontally transport the mixed grain.

[0023] The impurity screening module 4 includes a screen plate A41, a screen plate B42, and a guide plate 43, which are arranged vertically at intervals. The aperture of the screen plate A41 is larger than the grain particle size to preliminarily screen impurities larger than the grain. The screen plate A41 is tilted to one side, and an opening is provided on the side wall of the main body of the equipment 1 to assist in the discharge of impurities. The tilt angle should be controlled between 10-20° to avoid the grain and impurities being discharged together due to an excessive tilt angle.

[0024] The aperture of the screen plate B42 should be smaller than the grain particle size to screen out impurities such as mud, sand, and gravel mixed in with the grain, thus facilitating subsequent quality inspection. During the screening process, the screened grain should be conveyed to the next stage, so its inclination should be the same as the conveying direction of the conveyor belt 7, and the angle should be between 10-20°. Its length should be adjusted appropriately to ensure that the grain can be spread flat on the screen during the screening process, thus facilitating subsequent color inspection.

[0025] Meanwhile, in order to facilitate centralized collection, protective plates are installed on both sides of the end of the screen plate B42, and the end should be gathered towards the center to collect the screened grain in a centralized manner.

[0026] The guide plate 43 is directly arranged below the screen plate B42, and is inclined at an angle of 30-45°. The side wall of the main body 1 of the equipment is also provided with an opening to discharge the screened mud, sand, gravel and other debris to the outside of the main body 1 of the equipment.

[0027] Furthermore, in order to improve the screening and grain leveling effect, both screen plate A41 and screen plate B42 are composed of a fixed frame 44 and a screen. Both the fixed frame 44 and the screen are made of metal. At the same time, a rib is provided inside the fixed frame 44. The rib is fixedly connected to the bottom surface of the screen, and a vibration motor 45 is fixedly installed at the bottom of the rib via a motor base to drive the screen and the fixed frame 44 to vibrate.

[0028] The side wall of the fixed frame 44 is equipped with a buffer seat, such as a rubber buffer seat, to isolate the influence of the vibration motor 45 on the main body of the equipment 1. The screen plate A41 and the screen plate B42 should be controlled independently. That is, during the screening process, the vibration frequency of the screen plate B42 is relatively small, in order to better spread the grain.

[0029] Below the end of the screen plate B42, there is a collection hopper 8, which is used to collect the sieved grain. At the bottom of the collection hopper 8, there is a weighing sensor, preferably an SCAIME F60X dynamic weighing sensor, to measure the amount of material after sieving and compare it with the amount of material input, so that the impurity content can be calculated.

[0030] In addition, a solenoid valve is installed at the bottom of the storage hopper 8. This solenoid valve is electrically connected to the control console 2 and is used to quantitatively add grain to facilitate subsequent testing.

[0031] In the quality inspection module 5, the color detection unit 52 should be directly arranged between the screen plate A41 and the screen plate B42. The color detection unit 52 includes a camera and a lighting lamp, and can also be equipped with a colorimeter or a visible-near infrared spectrometer. The image data is transmitted to the console 2 through continuous illumination for subsequent software analysis.

[0032] During this testing process, the vibration of the sieving will cause dust in the grain to be stirred up, resulting in a large amount of dust that forms an obstruction and affects the testing accuracy. Therefore, it is necessary to equip the top of the main body 1 with an exhaust fan 6. The exhaust pipe of the exhaust fan 6 extends downward and connects to the inside of the main body 1, and its exhaust port is located above both sides of the screen plate B42 and close to the camera and lighting. The dust interference is reduced by rapid exhaust, ensuring the testing effect.

[0033] The odor detection unit 51 includes a connecting seat 511 located inside the main body 1. A rotating platform 512 is located on the top of the connecting seat 511, and a servo motor is installed inside the connecting seat 511 and fixedly connected to the bottom of the rotating platform 512 to drive the rotating platform 512 to rotate at a fixed angle. Six mounting slots are arranged around the top surface of the rotating platform 512, and a measuring cup 513 is fixed in each slot. The measuring cup 513 is used to hold the grain being tested. In this structure, the rotating platform 512 rotates 60° each time, always ensuring that the top of one measuring cup 513 is aligned with the bottom opening of the container, thus stably feeding the grain into the measuring cup 513. Furthermore, the control console 2 can perform quantitative feeding through a preset program, enabling comparative experiments within the same batch, reducing the impact of local areas on the overall measurement results of the grain. Based on this structure, multiple batches of grain from different areas can also be fed in batches to achieve comparative experiments between different batches, making the detection results more accurate.

[0034] The measuring cup 513 has a feed inlet and a valve at the top; and a discharge outlet and a discharge valve at the bottom. Both the valve and the discharge valve can be remotely controlled using a solenoid valve structure. The measuring cup 513 also has an electronic nose 514 at the top. For example, when detecting mold in wheat, corn, or rice, the PEN3 or FOX 4000 electronic nose 514 from AIRSENSE in Germany can be used to capture volatile organic compounds (VOCs) through a metal oxide sensor array and analyze the odor fingerprint using algorithms such as PCA and PLS.

[0035] A discharge pipe is also provided at the bottom of the rotary table 512, which is aligned vertically with the discharge port at the bottom of the measuring cup 513 to assist in the output of materials. A sealing bag is also provided at the bottom of the discharge pipe to facilitate packaging and sealing, so as to trace the source of the tested materials.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of this utility model.

Claims

1. A grain storage area sampling detection apparatus, characterized by, The device includes a main body (1), inside which a mixing and sampling module (3), an impurity screening module (4) and a quality detection module (5) are arranged in sequence. The bottom of the mixing and sampling module (3) is provided with a conveyor belt (7), and the end of the conveyor belt (7) extends to one side into the impurity screening module (4). A receiving hopper (8) is provided on one side of the impurity detection module. The discharge end of the receiving hopper (8) is located above the quality detection module (5). The bottom of the quality detection module (5) is also provided with a sealing bag. The end of the main body (1) is also provided with a control console (2). The control console (2) is electrically connected to the mixing and sampling module (3), the impurity screening module (4) and the quality detection module (5) respectively through wires.

2. The apparatus for grain bin sampling and testing of claim 1, wherein, The mixing and sampling module (3) includes a mixing tank (31) located on the top of the main body (1). The mixing tank (31) has a stirring shaft (33) inside. The top of the mixing tank (31) is also equipped with a stirring motor (32) and is connected to the stirring shaft (33) for transmission. The bottom of the mixing tank (31) is equipped with a discharge pipe. The discharge pipe extends vertically downward and the bottom opening is located directly above the conveyor belt (7). The inner bottom surface of the mixing tank (31) is also equipped with a first weighing sensor.

3. The apparatus of claim 2, wherein, The impurity screening module (4) includes screen plate A (41), screen plate B (42) and guide plate (43), and the screen plate A (41), screen plate B (42) and guide plate (43) are arranged vertically at intervals, and the screen plate A (41) and guide plate (43) are arranged inclined towards the two sides of the main body of the equipment (1), and the two sides of the main body of the equipment (1) are also provided with impurity discharge ports.

4. The apparatus of claim 3, wherein, The screen plate A (41) and screen plate B (42) are each composed of a fixed frame (44) and a screen. The fixed frame (44) is provided with a buffer seat on its side wall. The buffer seat is fixedly connected to the inner wall of the main body of the equipment (1) by bolts. The fixed frame (44) is also provided with a connecting rib plate inside. The connecting rib plate is fixedly connected to the bottom surface of the screen. The bottom of the connecting rib plate is also equipped with a vibration motor (45) through a motor seat.

5. The apparatus of claim 4, wherein, The storage hopper (8) extends upward at one side and is located close to the end of the screen plate B (42). The end of the screen plate B (42) converges towards the center and is provided with protective plates on both sides. The bottom opening of the storage hopper (8) is also provided with an electromagnetic valve and a second weighing sensor. The electromagnetic valve is electrically connected to the control console (2) through a wire.

6. The apparatus of claim 5, wherein, The quality detection module (5) includes an odor detection unit (51) and a color detection unit (52). The color detection unit (52) includes a camera and a light source located on both sides of the sieve B. The camera and the light source are fixedly connected to the inner wall of the main body of the equipment (1) through a bracket. The main body of the equipment (1) is also provided with exhaust fans (6) on both sides. The dust suction pipe of the exhaust fan (6) is connected to the inside of the main body of the equipment (1) and is arranged at intervals close to the sides of the camera and the light source. The odor detection unit (51) is located below the storage hopper (8) and is arranged vertically aligned with the bottom opening of the storage hopper (8).

7. The apparatus of claim 6, wherein, The odor detection unit (51) includes a connecting seat (511) disposed inside the main body (1) of the device. The top of the connecting seat (511) is provided with a rotating platform (512), and the interior of the connecting seat (511) is also provided with a servo motor and fixedly connected to the bottom of the rotating platform (512). The top surface of the rotating platform (512) is surrounded by multiple mounting slots, and each mounting slot is fixed with a measuring cup (513). The top of the measuring cup (513) is provided with a feed inlet, and the feed inlet is provided with a valve. The top of the measuring cup (513) is also provided with an electronic nose (514).

8. The apparatus of claim 7, wherein, Each of the measuring cups (513) has a discharge port at its bottom, and the discharge port is equipped with a discharge valve. The discharge port extends downward and extends above the packaging tape.

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