Grain unmanned sampling quality inspection device and process

Abstract

The invention relates to a grain unmanned sampling quality inspection device and process, and belongs to the technical field of grain detection, and the grain unmanned sampling quality inspection device comprises a sampling mechanism used for sampling grains; the reserved sample packaging machine is used for packaging the reserved sample grains; the sample mixing and separating machine is respectively connected with the sampling mechanism and the reserved sample packaging machine and is used for mixing and separating the grains sampled by the sampling mechanism, and the reserved grains are conveyed to the reserved sample packaging machine to be packaged; an impurity unmanned inspection machine; an unmanned intelligent inspection machine; the inspection result inquiry machine is used for acquiring grain quality information; and the pneumatic conveying mechanism is used for conveying grains. Compared with a traditional manual or semi-automatic inspection mode, the inspection efficiency is greatly improved, manual intervention is reduced, and the labor intensity is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of grain detection, and specifically relates to a grain unmanned sampling and quality inspection device and process. Background Art

[0002] In the prior art, when most grain quality inspections are carried out, a large amount of manual labor is required for corresponding inspection work, which is time-consuming and laborious, and also makes the inspection results vulnerable to human factors, resulting in an increase in the uncertainty of the inspection results, slower issuance of inspection results, and poor timeliness.

[0003] In response to the above problems, some patents have proposed improvement solutions in recent years. For example, Chinese Patent No. CN118731022A discloses a grain quality unmanned intelligent inspection system. This patent can roughly separate grains from impurities through an impurity screening machine and an impurity air separator, but it cannot finely separate larger impurities, smaller impurities, lighter impurities, and co-existing impurities in grains, affecting the separation efficiency between grain impurities. This patent is difficult to achieve the automation and intelligence of the whole process from grain feeding to impurity separation and weighing. Summary of the Invention

[0004] To solve the above technical problems, the technical solution adopted in this application is: A grain unmanned sampling and quality inspection device, comprising: A sampling mechanism for sampling grains; A sample retention packaging machine for packaging the retained grains; A sample mixing and dividing machine, connected to the sampling mechanism and the sample retention packaging machine respectively, mixing and dividing the grains sampled by the sampling mechanism, and transporting the retained grains to the sample retention packaging machine for packaging; An unmanned impurity inspection machine, the unmanned impurity inspection machine comprising: an anti-breakage discharger; an impurity screening machine disposed below the anti-breakage discharger for screening larger impurities; a co-existing impurity selection machine disposed below the impurity screening machine for separating co-existing grains and normal grains; an impurity air separator disposed on one side of the grain impurity screening machine for air-separating lighter impurities; An unmanned intelligent inspection machine, the unmanned intelligent inspection machine comprising a moisture and bulk density grade inspection instrument, an imperfect grain inspection instrument, a mildewed grain inspection instrument, and an insect-eaten grain inspection instrument; An inspection result query machine for obtaining grain quality information; A pneumatic conveying mechanism, the pneumatic conveying mechanism being connected to the sampling mechanism, the sample retention packaging machine, the sample mixing and dividing machine, the unmanned impurity inspection machine, and the unmanned intelligent inspection machine respectively for negative-pressure conveying of grains.

[0005] Further, the sampling mechanism includes a sampling frame, on which a guide rail is provided. A slider is slidably connected to the guide rail. A sampling robotic arm is provided on the slider. A sampling suction pipe is provided at the end of the sampling robotic arm. A sample mixer is provided on the slider. A sampling discharger is provided above the sample mixer. The sampling discharger is connected to the sampling suction pipe through a pipeline, and the outlet of the sampling discharger faces the sample mixer. A driving motor is provided on the slider, and a gear is provided at the output end of the driving motor. A rack is provided on the guide rail, and the gear is meshed with the rack.

[0006] Further, the retained sample packaging machine includes: A bag film bracket, fixed above the cabinet body, for winding the packaging bag film; A grain conveying pipe, for conveying the retained sample grains, and the packaging bag film is wrapped outside the grain conveying pipe; A bag making device, surrounding the outside of the packaging bag film. The bag making device includes at least three groups of guide rings, which are respectively arranged around the outside of the grain conveying pipe in sequence. The shape of the guide ring is oval, and the size of the guide ring decreases sequentially from top to bottom; A bag making vertical sealer, arranged on one side below the bag making device, for pressing and sealing the edge of the packaging bag film; A roller device, arranged on the lower side of the bag making vertical sealer, for driving the packaging bag film to move; An inkjet printer, arranged below the bag making vertical sealer, for inkjet printing on the retained sample bag; A bottom sealer, arranged below the inkjet printer.

[0007] Further, the impurity winnower includes an impurity discharger, a winnowing impurity suction pipe and a winnower housing. A grain feeding port and a grain discharging port are provided on the winnower housing. The grain feeding port and the grain discharging port are communicated. An air inlet is provided between the grain feeding port and the grain discharging port. An air outlet is provided above the winnower housing, and the air outlet is connected to the winnowing impurity suction pipe. The air outlet is arranged directly above the grain discharging port. A baffle is provided at the air inlet, and the baffle is inclined towards the side of the grain discharging port. The impurity winnower is connected to a suction air collecting pipe. A suction air switch solenoid valve is provided between the impurity discharger and the suction air collecting pipe. The outlet of the impurity discharger is connected to an impurity weighing scale.

[0008] Further, the impurity sieve includes a large impurity sieve, a small impurity sieve and a sieve housing. The large impurity sieve and the small impurity sieve are respectively movably connected to the sieve housing. The large impurity sieve is arranged above the small impurity sieve. A driving mechanism is connected below the sieve housing, and the driving mechanism is used to drive the sieve housing to shake; The driving mechanism includes a vibration motor, an eccentric wheel and a connecting rod. The vibration motor is fixedly connected to the sieve housing. The output shaft of the vibration motor is connected to the eccentric wheel. One end of the connecting rod is hingedly connected to the eccentric wheel, and the other end of the connecting rod is hingedly connected to an ear plate. The ear plate is arranged below the sieve housing. Slide rails are respectively arranged on both sides of the sieve frame, and sliders are sleeved on the slide rails. The sliders are fixedly connected to the sieve housing. A lifting mechanism is arranged at one end of the sieve frame opposite to the bracket. The lifting mechanism is used to lift one end of the impurity screening machine.

[0009] Furthermore, the side-by-side impurity separator includes: A vibrating feeder for conveying grain particles; A material receiver is arranged below the vibrating feeder. The material receiver is provided with two outlets, which are respectively communicated with a side-by-side impurity weighing scale and a grain weighing scale, and is used for separating side-by-side impurities and grains. A vision camera assembly is arranged between the vibrating feeder and the material receiver; A nozzle is arranged at the inlet of the material receiver. The nozzle includes an air source pipeline and an electromagnetic valve. The electromagnetic valve is electrically connected to the vision camera assembly. When the vision camera group captures side-by-side grains, the nozzle starts the electromagnetic valve to open, and is used for separating side-by-side impurities; An optoelectronic sensor is arranged at the outlet of the vibrating feeder and is electrically connected to the camera assembly, and is used to start the camera assembly to perform visual recognition on the grains. The vision camera assembly includes a camera and a material lamp. There are two groups of material lamps, which are respectively arranged on both sides of the camera. There is one group of side-by-side cameras, which are arranged on one side of the vertical plane at the outlet of the vibrating feeder. The included angle range between the axis of the side-by-side camera and the horizontal plane is 20 degrees to 70 degrees.

[0010] Furthermore, the anti-breakage discharger includes: A discharger housing, inside which a grain accommodation cavity is formed. The top of the discharger housing is connected to the pneumatic conveying mechanism for introducing grains; A discharge plate is arranged at the bottom outlet of the grain accommodation cavity. The discharge plate is hingedly connected to the discharger housing through a hinge shaft and can rotate around the hinge shaft to open and close, and is used for discharging and storing grains; A driving component is fixed on the discharger housing and is used to provide a closing moment to the discharge plate to drive the discharge plate to close to the discharger housing.

[0011] Further, the pneumatic conveying mechanism includes a suction fan. The air inlet side of the suction fan is connected to the suction air collecting pipe in a through manner. A plurality of suction air switch solenoid valves are arranged on the suction air collecting pipe. The suction air switch solenoid valves are connected to the anti-breakage discharge device. A suction hopper is arranged on one side of the anti-breakage discharge device. A grain suction pipe is connected between the suction hopper and the anti-breakage discharge device. A material sensor is arranged at the bottom of the suction hopper. The material sensor is electrically connected to the suction air switch solenoid valve. A discharge port is arranged at the lower end of the anti-breakage discharge device. The outlet of the discharge port faces the next suction hopper.

[0012] Further, the moisture and bulk density grade tester includes a grain bulk density tester and a grain moisture tester. The grain moisture tester is arranged below the grain bulk density tester. The grain bulk density tester includes a leakage hopper and a bulk density box located inside the leakage hopper. An outlet channel is formed between the leakage hopper and the bulk density box. A discharge device is fixedly arranged at the bottom of the leakage hopper. The bottom of the bulk density box is fixedly arranged on the discharge device. The grain moisture tester includes microwave sensors. The microwave sensors are symmetrically arranged on both sides of the leakage hopper. The microwave sensors are fixedly connected to the leakage hopper. For the imperfect grain tester, the imperfect grain tester includes an imperfect grain vibrating and leveling device, an imperfect grain camera assembly, an imperfect grain nozzle, an imperfect grain weighing scale, and an imperfect grain discharge device. The imperfect grain discharge device is arranged below the imperfect grain vibrating and leveling device. The imperfect grain camera assembly is arranged between the imperfect grain vibrating and leveling device and the imperfect grain discharge device for taking images of the grains falling from the imperfect grain vibrating and leveling device into the imperfect grain discharge device. The imperfect grain nozzle is arranged on one side of the imperfect grain discharge device. For the mildewed grain tester, the mildewed grain tester includes a mildewed grain vibrating and leveling device, a mildewed grain camera assembly, a mildewed grain nozzle, a mildewed grain weighing scale, and a mildewed grain discharge device. The mildewed grain discharge device is arranged below the mildewed grain vibrating and leveling device. The mildewed grain camera assembly is arranged between the mildewed grain vibrating and leveling device and the mildewed grain discharge device for taking images of the grains falling from the mildewed grain vibrating and leveling device into the mildewed grain discharge device. The mildewed grain nozzle is arranged on one side of the mildewed grain discharge device. For the insect-eaten grain tester, the insect-eaten grain tester includes an insect-eaten grain vibrating and leveling device, an insect-eaten grain camera assembly, an insect-eaten grain nozzle, an insect-eaten grain weighing scale, and an insect-eaten grain discharge device. The insect-eaten grain discharge device is arranged below the insect-eaten grain vibrating and leveling device. The insect-eaten grain camera assembly is arranged between the insect-eaten grain vibrating and leveling device and the insect-eaten grain discharge device for taking images of the grains falling from the insect-eaten grain vibrating and leveling device into the insect-eaten grain discharge device. The insect-eaten grain nozzle is arranged on one side of the insect-eaten grain discharge device.

[0013] This application also provides a grain unmanned sampling and quality inspection process, including the following steps: S1. Sampling step, randomly sampling the grains through the sampling mechanism. S2, sample packaging step, automatically transmitting the sampled grain samples to a sample packaging machine for packaging and sample retention; S3, a mixing and sampling step, mixing and sampling the grains sampled by the sampling mechanism, and sending the sampled grains to a sample packaging machine for packaging; S4, impurity inspection step, using an unmanned impurity inspection machine to screen, winnow, select and separate the impurities in the grain sample to be inspected, and automatically calculate the impurity percentage and the side-by-side impurity percentage; S5, intelligent inspection step, using unmanned intelligent inspection machine to inspect the moisture bulk density grade, imperfect grain content, moldy grain content, and insect-damaged grain content of the grain samples to be inspected, and automatically analyze and inspect various quality indicators; S6, result query step, stores and uploads the inspection and testing results of the impurity unmanned inspection machine, the unmanned intelligent inspection machine and the sample packaging machine to the database for users to query the results through the inspection result query machine query system.

[0014] Compared with the prior art, the beneficial effects of this application are: 1. The present application provides an unmanned grain sampling quality inspection device, which realizes an integrated automatic inspection process by integrating a suction manifold, an anti-crushing discharger, an impurity screening machine, an impurity air selector, a side-by-side impurity selection machine, an impurity metering scale, a side-by-side impurity metering scale, a grain metering scale, and a hopper. Compared with traditional manual or semi-automatic inspection methods, the inspection efficiency is greatly improved, manual intervention is reduced, and labor intensity is reduced.

[0015] 2. The present application provides an unmanned grain sampling quality inspection device. The present application optimizes the sieve shell structure, including the layered design of large impurity sieves and small impurity sieves, so that impurities of different particle sizes can be more effectively separated during the screening process. The large impurity sieve is arranged above the small impurity sieve. This layered design allows large impurities to be first separated by the large impurity sieve on the upper layer, and small impurities are further screened through the small impurity sieve on the lower layer, thereby significantly improving the screening efficiency. Compared with the single sieve shell or simple double-layer sieve shell design in the prior art, the present application can complete the impurity separation task more efficiently.

[0016] 3. This application provides an unmanned grain sampling quality inspection device, which is equipped with intelligent control components such as a suction switch solenoid valve, a material sensor, and a grain impurity inspection and metering scale, to achieve real-time monitoring and control of the inspection process. The electrical connection between the material sensor and the suction switch solenoid valve ensures the smooth flow of materials and the stable operation of the system. The linkage between the visual camera component and the nozzle realizes the automatic identification and separation of side-by-side impurities, improving the intelligence level of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1Schematic diagram of the device structure of the present application; Figure 2 Schematic diagram of the impurity unmanned inspection machine structure of the present application; Figure 3 Schematic diagram of the side view structure of the impurity unmanned inspection machine of the present application; Figure 4 Schematic diagram of the impurity screening machine structure of the present application; Figure 5 Schematic diagram of the side view structure of the impurity screening machine of the present application Figure 6 Schematic diagram of the impurity air separator structure of the present application; Figure 7 Schematic diagram of the side-by-side impurity concentrator structure of the present application; Figure 8 Schematic diagram of the unmanned intelligent inspection machine structure of the present application; Figure 9 Schematic diagram of the pneumatic conveying mechanism structure of the present application; Figure 10 Schematic diagram of the sampling mechanism structure of the present application; Figure 11 Schematic diagram of the front view structure of the sampling mechanism of the present application; Figure 12 Schematic diagram of the front view structure of the sampling mechanism of the present application; Figure 13 Schematic diagram of the sample mixer structure of the present application; Figure 14 Schematic diagram of the sectional view structure of the sample mixer of the present application; Figure 15 Schematic diagram of the retained sample packaging machine structure of the present application; Figure 16 Schematic diagram of the side view structure of the retained sample packaging machine of the present application; Figure 17 Schematic diagram of the bag making and sealing device structure of the retained sample packaging machine of the present application; Figure 18 Schematic diagram of the bottom sealing device structure of the retained sample packaging machine of the present application; Figure 19 Schematic diagram of the structure of the first embodiment of the anti-breakage discharger of the present application; Figure 20 Schematic diagram of the structure of the second embodiment of the anti-breakage discharger of the present application; Figure 21 Schematic diagram of the structure of the third embodiment of the anti-breakage discharger of the present application; Figure 22 Schematic diagram of the structure of the anti-breakage discharger of the present application; Figure 23 Schematic diagram of the dust cover structure of the anti-breakage discharger of the present application; Figure 24 This is the structural diagram of the moisture and bulk density grade tester for the device of this application; Figure 25 This is the side view structural diagram of the moisture and bulk density grade tester for the device of this application; Figure 26 This is the structural schematic diagram of the vibrating feeder for the device of this application; Figure 27 This is the structural schematic diagram of the vision camera group for the device of this application; Figure 28 is Figure 27 side view.

[0018] In the figure: 1. Sampling mechanism, 11. Sampling frame, 12. Guide rail, 121. Rack, 122. Inverted V-shaped table, 13. Moving block, 131. Driving motor, 132. Gear, 133. V-shaped groove, 14. Sampling robotic arm, 15. Sampling suction pipe, 16. Mixer, 161. Receiving hopper, 162. Sample divider, 17. Sampling pipeline, 18. Sampling discharger, 19. Turntable; 2. Retained sample packaging machine, 201. Bottom sealer, 2011. Bottom sealing bracket, 2012. Bottom sealing cylinder, 2013. Bottom sealing plate, 2014. Fixed plate, 2015. Moving rod, 2016. Buffer spring, 202. Inkjet printer, 203. Bag making vertical sealer, 2031. Pressing wheel, 2032. Heating plate, 2033. Cylinder, 204. Bag making machine, 205. Grain retained sample suction pipe, 206. Retained sample hopper, 207. Retained sample hopper sensor, 208. Packaging bag film bracket, 211. Grain conveying pipe, 220. Cabinet, 222. Roller device, 223. Bag cutter, 224. First detection sensor, 225. Second detection sensor; 3. Mixing and sample dividing machine; 4. Unmanned impurity inspection machine, 401. Anti-crushing discharger, 402. Impurity screening machine, 403. Side-by-side impurity selection machine, 404. Side-by-side impurity weighing scale, 405. Grain weighing scale, 406. Moisture density inspection suction hopper, 407. Impurity discharger, 408. Air-selected impurity suction pipe, 409. Impurity air selector, 410. Grain suction pipe, 411. Grain impurity inspection weighing scale, 414. Grain recovery hopper, 415. Impurity weighing scale, 416. Impurity recovery hopper, 430. Sieve body, 431. Screen frame, 432, large miscellaneous screen, 433, small miscellaneous screen, 434, driving mechanism, 435, discharge slot, 436, bracket, 437, impurity discharge box, 438, slider, 439, slide rail, 440, screen shell, 441, fixed angle iron, 442, lifting mechanism, 443, vibration motor, 444, eccentric wheel, 445, connecting rod, 446, ear plate, 491, air selector shell, 492, air inlet, 493, grain drop port, 494, grain drop port, 495, air outlet, 496, baffle; 5. Unmanned intelligent inspection machine, 501. Vibrating feeder, 502. Photoelectric sensor, 503. Material light, 504. Side-by-side camera, 505. Nozzle, 506. Receiver, 51. Moisture density grade tester, 511. Grain density tester, 512. Grain moisture tester, 5111. Leakage box, 5112. Bulk density box, 5113. Discharge channel, 5114. Discharger, 5121. Microwave sensor, 52. Imperfect grain tester, 521. Imperfect grain vibration mixer, 522. Perfect grain camera assembly, 523, imperfect grain nozzle, 524, imperfect grain feeder, 525, imperfect grain weighing scale, 53, moldy grain inspection instrument, 531, moldy grain vibration leveler, 532, moldy grain camera assembly, 533, moldy grain nozzle, 534, moldy grain feeder, 535, moldy grain weighing scale, 54, worm-eaten grain inspection instrument, 541, worm-eaten grain vibration leveler, 542, worm-eaten grain camera assembly, 543, worm-eaten grain nozzle, 544, worm-eaten grain feeder, 545, worm-eaten grain weighing scale; 6. Inspection result inquiry machine; 711, vibrating feeder frame, 712, movable feeder plate, 713, lead screw motor, 714, V-groove feeder plate, 715, vibrator, 716, photoelectric sensor for material leveler, 717, material leveler, 718, first collection bin, 719, second collection bin, 721, first visual camera, 722, second visual camera, 723, third visual camera, 724, fourth visual camera; 8. The pneumatic conveying mechanism, 801. Suction fan, 802. Suction collecting pipe, 803. Suction switch solenoid valve, 806. Suction hopper, 807. Material sensor, 808. Suction pipe, 841. Discharger shell, 842. Discharge plate, 843. Fixing frame, 844. Self-priming switch plate positioning bolt, 846. Connecting plate, 848. Connecting bolt, 850. Driving component, 851. Counterweight plate, 852. Nut, 853. Counterweight plate, 854. Torsion spring, 855. Compression spring, 870. Filter cartridge, 871. Cloth bag fixing cartridge, 872. Cloth bag, 873. Hole. DETAILED DESCRIPTION

[0019] The present application is further described in detail below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0020] Example 1 like Figures 1 to 25 As shown, the present application provides an unmanned grain sampling quality inspection device, comprising: The sampling mechanism 1 is used for sampling grains; the sample packaging machine 2 is used for packaging the sampled grains; the sample mixing and sampling machine 3 is connected to the sampling mechanism 1 and the sample packaging machine 2 respectively, and the grains sampled by the sampling mechanism 1 are mixed and sampled, and the sampled grains are transported to the sample packaging machine 2 for packaging; the impurity unmanned inspection machine 4, the impurity unmanned inspection machine 4 includes: an anti-crushing discharger 401; an impurity screening machine 402, which is arranged below the anti-crushing discharger 401 and is used to screen larger impurities; a side-by-side impurity selection machine 403, which is arranged below the impurity screening machine 402 and is used to separate the side-by-side grains. impurities and normal grains; an impurity winnowing device 409, which is arranged on one side of the grain impurity screening machine 402 and is used to winnow lighter impurities; an unmanned intelligent inspection machine 5, which includes a moisture bulk density grade inspection instrument 51, an imperfect grain inspection instrument 52, a moldy grain inspection instrument 53 and an insect-damaged grain inspection instrument 54; an inspection result inquiry machine 6, which is used to obtain grain quality information; a pneumatic conveying mechanism 8, which is respectively connected to the sampling mechanism 1, the sample retention packaging machine 2, the sample mixing and sorting machine 3, the impurity unmanned inspection machine 4, and the unmanned intelligent inspection machine 5, and is used for negative pressure conveying of grains.

[0021] The workflow is as follows: Sampling: The sampling mechanism 1 randomly samples from multiple points in the grain delivery truck through negative pressure. After the samples are mixed by the sample mixer 16, they are sub-sampled by the splitter 162, and the sampled grains are sent to the sample mixing and splitting machine 3 after sub-sampling, and then evenly sub-sampled by the sample mixing and splitting machine 3 again to obtain the retained sample and the test sample. The sample mixer 16 is fixedly arranged on one side of the moving block 13 and moves together with the moving block 13 to sample grains at different positions.

[0022] Retention sample encapsulation: The retained part of the grains after being sub-sampled by the sample mixing and splitting machine 3 is conveyed to the retention sample packaging machine 2 to complete automatic bag making, filling, inkjet coding and sealing packaging, and the retained sample is stored; the test part of the sample grains after being sub-sampled by the sample mixing and splitting machine 3 is conveyed to the impurity inspection.

[0023] Impurity inspection: The grain impurity content is inspected by the unmanned impurity inspection machine 4. The test part of the sample first enters the grain impurity inspection weighing scale 411 to measure the total sample mass for grain impurity inspection, and then passes through the anti-breakage discharger 401, impurity sieve 402, side-by-side impurity separator 403 and impurity air separator 409 in sequence. Among them, the anti-breakage discharger 401 is used to prevent grain breakage, the impurity sieve 402 is used to screen large and small impurities, the side-by-side impurity separator 403 is used to remove side-by-side impurities by visual recognition, and the impurity air separator 409 is used to separate light impurities by air separation. The total sample mass in the grain impurity inspection weighing scale 411 is equal to the sum of the grain mass in the grain recovery hopper 414, the grain mass in the grain weighing scale 405, the side-by-side impurity mass in the side-by-side impurity weighing scale 404 and the impurity mass in the impurity weighing scale 415. Finally, the weighing scale statistically calculates the impurity content and side-by-side impurity content in the test part of the sample grains.

[0024] Intelligent inspection: The part of the sample grains after impurity inspection then enters the unmanned intelligent inspection machine 5, and through the moisture content and specific gravity grade tester 51, imperfect grain tester 52, mildewed grain tester 53 and insect-eaten grain tester 54, it automatically detects and calculates various quality indicators such as the moisture content grade, imperfect grain content, mildewed grain content and insect-eaten grain content in the sample grains.

[0025] Result query: All the test data are summarized by the test result query machine 6 and uploaded to the cloud database. Users can query the quality inspection report and retained sample information in real time through the terminal.

[0026] Embodiment 2 As Figures 10 to 14As shown, the sampling mechanism 1 includes a sampling frame 11, which adopts a steel structure frame, and two sets of parallel guide rails 12 are horizontally installed on the top. A moving block 13 is slidably connected to the guide rail 12, and the moving block 13 is driven to move along the guide rail 12 by a driving motor 131. Specifically, the driving motor 131 is fixed to the side of the moving block 13, and its output shaft is connected to the gear 132. A rack 121 is provided on the inner side of the two sets of guide rails 12, and the gear 132 is meshed with the rack 121. The reciprocating motion of the moving block 13 is achieved by controlling the forward and reverse rotation of the driving motor 131. A V-shaped groove 133 is provided at the bottom of the moving block 13, and an inverted V-shaped table 122 is welded on the guide rail 12, which forms a sliding fit with the V-shaped groove 133 of the moving block 13, thereby enhancing the stability of the moving block 13 during movement and preventing derailment and overturning. The present invention provides a guide rail and a moving block on the sampling rack, so that the sampling mechanical arm can slide on the guide rail to achieve flexible adjustment of the sampling position. This design greatly improves the coverage and accuracy of sampling, and solves the defect that the samples obtained by traditional fixed-position sampling are not representative enough.

[0027] Sampling mechanical arm 14 and turntable structure A turntable 19 is installed on the moving block 13, and the turntable 19 is connected to the moving block 13 through a bearing, and the turntable 19 is driven to rotate by a rotating motor connected to the turntable 19, and the rotating motor is fixed inside the moving block 13 (not shown in the figure). One end of the sampling mechanical arm 14 is vertically fixed on the turntable 19, and the other end extends to the area to be sampled. The end of the sampling mechanical arm 14 is connected to the sampling suction pipe 15, which is a hollow metal tube, and its end is provided with multiple groups of suction holes along the axial direction, and the suction holes are evenly distributed up and down to achieve synchronous sampling of grains at different depths. The sampling suction pipe 15 is connected to the sampling discharger 18 through the sampling pipeline 17, and the sampled grains are temporarily stored in the sampling discharger 18. A mixer 16 is arranged below the sampling discharger 18, and then the inspection grain sample and the retained grain sample are separated by the mixer 16, and are used for inspection and retention respectively.

[0028] The sample mixer 16 includes a receiving hopper 161 and a sample divider 162. After the receiving hopper 161 receives the grains from the sampling discharger 18, it is diverted through the sample divider 162. Four groups of feed ports are arranged inside the sample divider 162, two of which are connected to the inspection suction hopper (for grain impurity level detection) through pipes, and the other two groups are directly facing the grain delivery vehicle (for sample backfilling). The four groups of feed ports are alternately distributed in a circular pattern to ensure uniform sampling. The combined design of the sample mixer and the sample divider in the device of the present application enables the samples to be quickly mixed and sampled after being taken, thereby improving the efficiency of sample processing.

[0029] Example 3 like Figures 15 to 18As shown, the sample storage packaging machine 2 includes: a cabinet body 220; a packaging bag film bracket 208, fixed above the cabinet body 220, for winding the packaging bag film. The initial state of the packaging bag film is a thin film, which is processed into a packaging bag after bag-making operation and is used to package the sample grains. The packaging bag film wraps around the outside of the grain conveying pipe 211 from top to bottom; the grain conveying pipe 211 penetrates through the cabinet body 220 and extends to the bottom, for conveying the sample grains; a bag-making device 204, surrounding the outside of the packaging bag film. The bag-making device 204 includes at least three groups of guide rings, which are sequentially arranged around the outside of the grain conveying pipe 211. The shape of the guide ring is oval, and the size of the guide ring decreases sequentially from top to bottom. Multiple groups of guide rings are sleeved around the outside of the grain conveying pipe 211 from top to bottom, gradually shrinking the packaging bag film into a cylindrical shape to realize the processing from the thin film to the thin film cylinder. The guide ring is made of stainless steel, and a polytetrafluoroethylene coating is provided on the inner side of the guide ring in contact with the packaging bag film to reduce the frictional resistance of the movement of the packaging bag film; a bag-making vertical sealer 203, arranged on one side below the bag-making device 204, for pressing and sealing the edge of the packaging bag film. After the packaging bag film is hooped from the thin film into a thin film cylinder, the edge of the packaging bag film is pressed and sealed by the bag-making vertical sealer 203 to complete the production of the thin film to the thin film cylinder. The bag-making vertical sealer 203 includes a pressing wheel 2031, a heating plate 2032 and a cylinder 2033. There are two groups of heating plates 2032. The length direction of the heating plate 2032 is the same as the extending direction of the packaging bag film. One of the heating plates 2032 is connected to the cylinder 2033, and the cylinder 2033 is used to drive the heating plate 2032 to move. Specifically, the left heating plate 2032 is fixed, and the right heating plate 2032 is driven by the cylinder 2033 to move horizontally. When the two are closed, the side of the packaging bag film is heat-pressed and sealed. In order to better heat-press and seal the packaging bag film, a number of raised patterns are provided on the end face of the heating plate. Specifically, the temperature of the heating plate is set at 180°C ± 5°C, the pressing time is 0.8 seconds, and a longitudinal sealing edge with a width of 10 mm is formed; a roller device 222, arranged on the lower side of the bag-making vertical sealer 203, for driving the packaging bag film to move forward; a coder 202, arranged below the bag-making vertical sealer 203, for spraying and printing on the sample bag; a bottom sealer 201, arranged below the coder 202. The bag-making device 204, the bag-making vertical sealer 203, the roller device 222, the coder 202 and the bottom sealer 201 are arranged in sequence along the walking direction of the packaging bag film. Among them, the bag-making vertical sealer 203 is located on one side below the bag-making device 204. The roller device 222 drives the packaging bag film to move down evenly through a motor. The coder 202 prints batch information on the surface of the packaging bag, and the bottom sealer 201 completes the bottom heat-sealing and cuts off the finished bag.

[0030] The working principle of the bottom sealer 201 is similar to that of the bag-making and sealing device 203, except that the bag-making and sealing device 203 is used to heat-press and seal the sides of the packaging bag film, while the bottom sealer 201 is used to cover or heat-press and seal the packaging bag tube after the sides are sealed, so as to make a sealed bag. Among them, the bottom sealing cylinder 2012 of the bottom sealer 201 drives the bottom sealing plate 2013 to move toward the fixed plate 2014, and the two plates are heated to 200°C after contact to complete the bottom sealing. After the grain sample is completed, the upper part is sealed. The bottom sealing plate 2013 is slidably connected to the bottom sealing bracket 2011 through the movable rod 2015, and the buffer spring 2016 provides a pre-tightening force of 15N to ensure uniform sealing pressure and can play a buffering role. With the same design principle, the bag-making and sealing device 203 can also adopt the same structure as the bottom sealer 201, and a buffer spring is added between the fixed plate and the movable plate. The bag cutter 223 is located 30mm above the bottom sealer 201. When the second detection sensor 225 detects the bottom sealing completion signal, the cutter cuts the packaging bag horizontally, and the cutting accuracy error is ≤1mm. Specifically, the bottom sealing plate 2013 is inserted on the movable rod 2015, and the bottom sealing plate 2013 and the bottom sealing bracket 2011 are provided with a buffer spring 2016.

[0031] A bag cutter 223 is arranged above the bottom sealer 201, and a first detection sensor 224 and a second detection sensor 225 are arranged below the bag cutter 223. The first detection sensor 224 is electrically connected to the bottom sealer 201, and the second detection sensor 225 is electrically connected to the bottom sealer 201 and the bag cutter 223. Specifically, the first detection sensor 224 is a photoelectric sensor, which is used to detect whether the packaging bag film is in place and trigger the bottom sealer 201 to start; the second detection sensor 225 is a pressure sensor, which monitors the bottom sealing pressure to reach 50N and then links the bag cutter 223 to operate.

[0032] The upper end of the grain conveying pipe 211 is connected to an anti-crushing discharger for storing grains. The anti-crushing discharger draws grains from the sample bucket 206 through the grain sample suction pipe 205. The sample bucket 206 is provided with a sample bucket sensor 207. The sample bucket sensor 207 is connected to the electrical components of the sample packaging machine 2 for linkage control. The sample bucket sensor 207 adopts a capacitive material level switch, and the detection sensitivity can be adjusted in the range of 0-500g. Specifically, it is electrically connected to the solenoid valve of the anti-crushing discharger, the bottom sealer 201, the inkjet printer 202, the bag making and sealing device 203, etc. When the sample bucket sensor 207 detects that there are grains in the sample bucket 206, the above components can be controlled to start and perform sample packaging operations.

[0033] During operation, the packaging bag film is formed into a tube shape by the bag maker 204. After the longitudinal sealing is completed by the bag-making longitudinal sealer 203, the roller device 222 pulls the film downward by a set length. The inkjet printer 202 prints a QR code or barcode and a timestamp at a preset position. The QR code or barcode information includes the grain type and vehicle license plate number information. After the grains fall into the bag through the anti-breakage discharger 401, the bottom sealer 201 performs transverse sealing and cutting, and the finished bag automatically falls into the collection box. The fully automatic integrated design of bag making and filling enables traceability of the inkjet information and ensures the compliance of the retained samples.

[0034] Embodiment 4 As Figures 4 to 6 shown, the impurity air separator 409 includes an impurity discharger 407, an air-separated impurity suction pipe 408 and an air separator housing 491, wherein the structure of the impurity discharger 407 is similar to that of the anti-breakage discharger 401. The top of the air separator housing 491 is provided with an air outlet 495, a grain feed inlet 494 is provided above, and a grain discharge port 493 is provided below. The grain feed inlet 494 is a conical hopper, and its outlet is located above the air inlet 492 and is communicated with the grain discharge port 493. The air inlet 492 is provided on the side wall of the housing between the grain feed inlet 494 and the grain discharge port 493 for introducing external air flow. The suction air collecting pipe 802 is connected to the impurity discharger 407 through a suction air switch solenoid valve 803. One end of the air-separated impurity suction pipe 408 is connected to the air outlet 495, and the other end is connected to the suction air collecting pipe of an external negative pressure device to form a closed air flow cycle.

[0035] During use, after the grains and light impurities fall into the grain feed inlet 494, the grains move towards the grain discharge port 493 under the action of gravity. Due to the effect of negative pressure, the air flow between the air inlet 492 and the air outlet 495 is from bottom to top. Therefore, when the light impurities approach the air inlet 492, under the action of the negative pressure air flow, the light impurities are transported to the impurity discharger 407 through the air-separated impurity suction pipe 408 and finally transported to the impurity weighing scale 415 for statistical calculation of the impurity content in the grains.

[0036] The winnower housing 491 is formed by welding 304 stainless steel. The internal cavity has a rectangular cross-section, with a height of 800 mm and a width of 400 mm. An inclined baffle 496 is installed at the air inlet 492. The baffle 496 is connected to the side wall of the housing through a hinge. The initial inclination angle is 120° towards the side of the grain discharge opening 493, and the inclination angle can be adjusted within the range of 90° to 180° by an adjustment assembly 497. The adjustment assembly 497 includes a screw and a nut. By rotating the screw, the baffle 496 is pushed to rotate around the hinge axis to control the effective cross-sectional area of the air inlet, and the adjustable wind speed range is 5 - 15 m / s. The adjustment assembly 497 includes a bracket fixed on the outside of the winnower housing 491, an adjustment rod connected to the baffle 496, and a handwheel. When the handwheel is rotated, the adjustment rod moves along the thread, driving the baffle 496 to rotate around the hinge axis. The angle scale is marked at 10° intervals, facilitating the operator to accurately control the air intake volume.

[0037] The air outlet 495 is a circular opening with a diameter of 150 mm, located 200 mm directly above the grain discharge opening 493, and is hermetically connected to the air suction pipe 408 for winnowed impurities through a flange.

[0038] The baffle 496 is hinged to the winnower housing 491. An adjustment assembly 497 is provided on the winnower housing 491. The adjustment assembly 497 is used to drive the baffle 496 to rotate. The adjustable angle range between the baffle 496 and the winnower housing 491 is 90 degrees to 180 degrees. When the impurities accumulate to the set amount, the air suction switch solenoid valve is closed, and the impurities fall under the action of gravity. When there is no need for discharging, the negative pressure is maintained to close the discharge plate 842.

[0039] The impurity discharger 407 is a funnel-shaped housing. A discharge plate is provided at the inner outlet of the impurity discharger 407. The discharge plate is connected to the housing through a hinge shaft. The impurity discharger is under negative pressure control. When the impurities accumulate to the set amount, the air suction switch solenoid valve is closed, and the impurities fall under the action of gravity. When there is no need for discharging or it needs to be closed, negative pressure control is carried out inside the discharger, and the discharge plate 842 seals the outlet of the discharger under the action of negative pressure.

[0040] During operation, the grains enter from above and uniformly fall through the conical grain discharge opening 494; the external fan generates negative pressure through the air suction collecting pipe 802, and the air flow enters the winnower housing 491 horizontally from the air inlet 492; lightweight impurities such as chaff and debris are carried by the air flow towards the air outlet 495 and enter the impurity discharger 407 through the air suction pipe 408 for winnowed impurities for temporary storage; the plump grains fall through the air flow due to gravity into the grain discharge opening 493 to complete the sorting; when the impurities in the impurity discharger 407 reach the preset amount, the air suction switch solenoid valve 803 is closed, and the impurities fall under the action of gravity. At the same time, the discharge plate opens to discharge the impurities.

[0041] The impurity screening machine 402 includes a sieve frame 431, on which a sieve body 430 is arranged. The sieve body 430 is movably connected to the sieve frame 431. A driving mechanism 434 is arranged below the sieve frame 431. The movable end of the driving mechanism 434 is hingedly connected to the sieve body 430. The driving mechanism 434 is used to drive the sieve body 430 to shake. The sieve body 430 includes a large impurity sieve 432, a small impurity sieve 433 and a sieve housing 440. The large impurity sieve 432 and the small impurity sieve 433 are respectively inserted and movably connected to the sieve housing 440. The large impurity sieve 432 is arranged above the small impurity sieve 433. One end of the sieve housing 440 is hingedly connected to the driving mechanism 434, and the sieve housing 440 is slidably connected to the sieve frame 431. In the embodiment of the present application, the sieve housing 440 is of a cuboid structure, formed by stainless steel welding. The large impurity sieve 432 (with a pore diameter of 8 mm) and the small impurity sieve 433 (with a pore diameter of 2 mm) are sequentially installed from top to bottom inside. Both are movably connected to the side wall of the sieve housing 440 through buckles, which is convenient for disassembly and replacement. The bottom of the sieve housing 440 is fixedly connected to the connecting rod of the driving mechanism 434. The driving mechanism 434 drives the sieve housing 440 to reciprocate horizontally. The end of the sieve housing 440 is connected to an impurity discharge box 437 for collecting the screened impurities. The feeding hopper is arranged at the top of the sieve housing 440, and three rectangular outlets (not labeled) are arranged at its bottom, respectively facing the front, middle and rear areas of the sieve housing 440 to ensure that the grains are evenly dispersed on the surface of the sieve mesh.

[0042] The driving mechanism 434 includes a vibration motor 443, an eccentric wheel 444, and a connecting rod 445. The vibration motor 443 is fixedly connected to the sieve frame 431. The output shaft of the vibration motor 443 is connected to the eccentric wheel 444. One end of the connecting rod 445 is hingedly connected to the eccentric wheel 444. Slide rails 439 are respectively arranged on both sides of the sieve frame 431. A slider 438 is sleeved on the slide rail 439. The slider 438 is fixedly connected to the sieve housing 440. The other end of the connecting rod 445 is hingedly connected to an ear plate 446. The ear plate 446 is arranged below the sieve housing 440. One end of the sieve housing 440 is fixedly connected to the ear plate 446. In the embodiment of the present application, the vibration motor 443 is an asynchronous motor. The rotation speed of the vibration motor 443 is 90 r / min, the eccentricity of the eccentric wheel 444 is 20 mm, and the vibration frequency of the sieve housing 440 is 1.5 times per second. The vibration motor 443 is fixed to the bottom of the sieve frame 431 by bolts, and its output shaft is key-connected to the eccentric wheel 444. One end of the connecting rod 445 is hinged to the eccentric wheel 444, and the other end is hinged to the ear plate 446 through a pin shaft. The ear plate 446 is a U-shaped double ear plate, and round holes are arranged on the ear plate for hinged connection with the connecting rod 445. When the vibration motor 443 rotates, one end of the connecting rod 445 rotates with the eccentric wheel 444, and the other end drives the sieve housing 440 to swing. The sieve housing 440 is in sliding fit with the slider 438 through the slide rail 439 to realize reciprocating swing back and forth, so as to achieve the purpose of screening out impurities. In the embodiment of the present application, the slide rail 439 is two parallel cylindrical guide rails (length 0.6 m), which are fixed on both sides of the sieve housing 440 and are respectively fixedly connected to the sieve frame 431. The slider 438 is a copper-based graphite bushing, which is sleeved on the slide rail 439 and is bolted to the sieve housing 440 through a fixed angle iron 441 (thickness 5 mm) (M10 bolts, spacing 150 mm). The slide rail-slider structure can reduce the frictional resistance when the sieve housing 440 shakes and limit its movement track.

[0043] A support 436 is arranged below the sieve frame 431. The sieve frame 431 is hingedly connected to the support 436. A lifting mechanism 442 is arranged at the opposite end of the lower part of the sieve frame 431 and the support 436. The lifting mechanism 442 is used to lift one end of the sieve body sieve frame 431. In the embodiment of the present application, the support 436 is an H-shaped steel frame, which is fixed to the housing of the screening machine. The end of the sieve frame 431 is connected to the support 436 through a hinge shaft. When the lifting mechanism 442 rises or falls, the end of the sieve frame 431 rotates around the hinge shaft to pour out grains or impurities. The lifting mechanism 442 is an electric cylinder or a hydraulic cylinder. In the embodiment of the present application, the lifting mechanism 442 is selected as an electric cylinder with a stroke of 200 mm and a thrust of 500 N. It is installed below the front end of the sieve frame 431. The telescoping of the electric cylinder is adjusted through a controller to change the inclination angle of the sieve housing 440 (adjustment range 0-15°), so as to control the flow rate of grains or impurities on the sieve body.

[0044] During use, the drive mechanism 434 is activated, and the vibration motor 443 drives the eccentric wheel 444 to rotate. Through the connecting rod 445, the sieve housing 440 is driven to swing reciprocally with the hinge end as the axis (amplitude ±15 mm, frequency 1.5 Hz); grains uniformly fall from the feed hopper into the large impurity sieve 432, and large particle impurities (such as straws and stones) are intercepted and slide towards the impurity discharge box 437 along with the shaking of the sieve housing; the grains passing through the large impurity sieve 432 fall into the small impurity sieve 433, and fine impurities (such as sand grains and debris) pass through the sieve holes and enter the V-shaped discharge chute opening 435, and are discharged after secondary separation by the air separator 491; the clean grains fall into the collection bin from the end of the small impurity sieve 433; when it is necessary to adjust the separation efficiency, the inclination angle of the sieve housing 440 is adjusted through the lifting mechanism 442, or the sieve mesh with different pore diameters is replaced.

[0045] An impurity air separator 409 is provided at the end of the sieve housing 440, a discharge chute opening 435 is provided at the end of the small impurity sieve 433, and the discharge chute opening 435 extends above the impurity air separator 409 for falling the screened grains into the impurity air separator 409.

[0046] In a further preferred embodiment, it further includes a feed hopper, and the feed hopper is provided with a plurality of outlets respectively facing different positions of the sieve housing 440.

[0047] Embodiment 5 As Figure 2 、 Figure 3 and Figure 7 shown, the side-by-side impurity concentrator 403 includes: A vibrating feeder 501 for conveying grain particles; A material receiver 506 is arranged below the vibrating feeder 501. The material receiver 506 is provided with two outlets respectively communicating with the side-by-side impurity weighing scale 404 and the grain weighing scale 405 for separating side-by-side impurities and grains; A vision camera assembly is arranged between the vibrating feeder 501 and the material receiver 506; A nozzle 505 is arranged at the inlet of the material receiver 506. The nozzle 505 includes an air source pipeline and an electromagnetic valve, and the electromagnetic valve is electrically connected to the vision camera assembly. When the vision camera group captures side-by-side grains, the nozzle 505 activates the electromagnetic valve to open for separating side-by-side impurities; An optoelectronic sensor 502 is arranged at the outlet of the vibrating feeder 501 and is electrically connected to the camera assembly for activating the camera assembly to perform visual recognition on the grains; The vision camera assembly includes a side-by-side camera and a material lamp 503. The material lamp 503 is in two groups and is respectively arranged on both sides of the side-by-side camera; the side-by-side camera is in one group and is arranged on one side of the vertical plane at the outlet of the vibrating feeder 501, and the included angle range between the axis of the side-by-side camera and the horizontal plane is 20 degrees to 70 degrees.

[0048] As shown Figures 19 to 23 in the figure, the anti - fragmentation discharger 401 includes: A discharger housing 841, inside which a grain accommodation cavity is formed. The top of the discharger housing 841 is connected to the pneumatic conveying mechanism 8 for introducing grains; A discharge plate 842 is arranged at the bottom outlet of the grain accommodation cavity. The discharge plate 842 is hingedly connected to the discharger housing 841 through a hinge shaft and can rotate around the hinge shaft to open and close for discharging and storing grains; A driving component 850, fixed on the discharger housing 841, is used to provide a closing moment to the discharge plate 842 and drive the discharge plate 842 to close towards the discharger housing 841.

[0049] Specifically, the driving component 850 includes a self - suction switch plate positioning bolt 844 and a counterweight disk 851. One end of the self - suction switch plate positioning bolt 844 is fixedly connected to the discharge plate 842. The counterweight disk 851 is sleeved on the self - suction switch plate positioning bolt 844 and is locked by nuts 852 on both sides; the center of gravity of the counterweight disk 851 deviates from the center line of the hinge shaft to generate a moment for driving the discharge plate 842 to close through gravity.

[0050] In the embodiment of the present application, the nut 852 is used to lock the counterweight disk 851; by adjusting the position of the counterweight disk 851, the opening and closing moment of the discharge plate 842 can be changed, so that the opening angle between the discharge plate 842 and the discharger housing 841 is within a reasonable range. When the pneumatic negative pressure system is used to convey grains in the discharger housing 841, the negative pressure in the discharger housing 841 causes the discharge plate 842 to quickly close, satisfying the accumulation of grains in the discharger housing. When it is necessary to release grains, the negative pressure in the discharger housing 841 is disconnected, and the gravity of the grains in the discharger housing 841 exceeds the torque generated by the counterweight, causing the discharge plate 842 to automatically open for discharging. After the discharging is completed, the torque generated by the gravity of the discharge plate 842 is less than the torque generated by the gravity of the counterweight disk 851. The driving component 850 is used to drive the discharge plate 842 to approach the discharger housing 841, reducing the opening angle between the discharge plate and the housing, so as to quickly close when conveying and storing grains next time. In the device embodiment of the present application, through the action of the gravity torque of the driving component, the opening angle between the discharge plate and the discharger housing can be reduced, facilitating the quick closing of the negative pressure for storing grains. When it is necessary to release grains, the gravity torque of the grains is greater than the gravity torque of the driving component, and the grains can be quickly released. The opening moment of the discharge plate can be accurately adjusted. When the grains accumulate to a preset weight, the gravity triggers the discharge plate to open smoothly, avoiding grain breakage caused by instantaneous impact.

[0051] As a further preferred embodiment, the difference of this embodiment lies in the different structure of the driving component. A composite driving component of torsion spring - counterweight is adopted. Specifically, the driving part 850 further includes a counterweight plate 853 and a torsion spring 854; one end of the counterweight plate 853 is fixedly connected to the discharge plate 842, and the included angle between the counterweight plate 853 and the discharge plate 842 is 120 degrees to 160 degrees; the torsion spring 854 is sleeved on the hinge shaft, one end of which is connected to the discharge plate 842 and the other end is connected to the fixed frame 843 to provide an elastic moment in the closing direction; the self - suction switch plate positioning bolt 844 is threadedly connected to the end of the counterweight plate 853, and its end abuts against the discharge device housing 841 to limit the maximum opening of the discharge plate 842.

[0052] As a further preferred embodiment, the difference of this embodiment is the adoption of a compression spring dynamic balance system. The driving part 850 further includes a compression spring 855. The compression spring 855 is sleeved on the end of the self - suction switch plate positioning bolt 844, one end of which abuts against the counterweight plate 853 and the other end abuts against the discharge device housing 841; the telescopic direction of the compression spring 855 is parallel to the axial direction of the self - suction switch plate positioning bolt 844 to assist the discharge plate 842 to close through the elastic force.

[0053] The pneumatic conveying mechanism 8 includes a suction fan 801, which is the power source of the system and drives the grain conveying through negative - pressure air flow. The air inlet side of the suction fan 801 is connected to the air suction collecting pipe 802 in a through - connection manner. The air suction collecting pipe 802 is made of stainless steel or galvanized iron pipe material to ensure corrosion resistance and structural strength. Specifically, a plurality of anti - crushing discharge devices 401 are arranged on the air suction collecting pipe 802, and the air flow on - off of each discharge device is independently controlled by an air suction switch solenoid valve 803. An air suction hopper 806 is arranged on one side of the anti - crushing discharge device 401. The air suction hopper 806 has the same structure and working principle as the sample - retaining hopper 206, and both use negative - pressure pipelines to convey grains. A grain suction pipe 410 is connected between the air suction hopper 806 and the anti - crushing discharge device 401. The solenoid valve is electrically connected to the material sensor 807 at the bottom of the air suction hopper 806 to realize automatic opening and closing. A discharge port 849 is arranged at the lower end of the anti - crushing discharge device 401. The outlet of the discharge port 849 faces the next air suction hopper 806. A discharge plate 842 is arranged at the discharge port 849, and the discharge plate 842 is hingedly connected to the anti - crushing discharge device 401.

[0054] Specifically, when the material sensor 807 at the bottom of the suction hopper 806 detects that there is grain in the suction hopper that needs to be inspected, the material sensor 807 is electrically connected to the suction air switch solenoid valve 803. The material sensor 807 adopts a capacitive or photoelectric sensor to monitor the grain stock in the suction hopper in real time and transmit the signal to the control system. The system controls the opening and closing of the solenoid valve according to the preset logic to achieve unmanned operation. When the solenoid valve of a certain anti-breaking discharge device 401 is opened, the solenoid valves of the other anti-breaking discharge devices are closed; the grain enters the system through the suction hopper 806 and is conveyed to the anti-breaking discharge device 401 through the grain suction pipe 410. Due to the negative pressure generated by the suction fan 801, the discharge plate 842 of the anti-breaking discharge device seals the discharge port 849, and the grain is conveyed into the anti-breaking discharge device. The grain accumulates at the discharge port 849 under the action of gravity. When the material sensor 807 detects that the grain amount in the suction hopper reaches the threshold value, it triggers the suction air switch solenoid valve 803 to close and stops the current conveying; after the downstream process is completed, the solenoid valve is reopened to achieve accurate feeding in batches. When it is necessary to continue conveying to the next-level inspection equipment, the suction air switch solenoid valve of the anti-breaking discharge device is closed, and the grain opens the discharge plate 842 under the action of gravity, and the grain falls from the discharge port into the suction hopper 806 of the next level. In the device of the present application, a discharge plate is provided. By cooperating the discharge plate with the suction air switch solenoid valve, the opening and closing of the anti-breaking discharge device can be accurately controlled. The negative pressure generated by the suction fan is used to convey the grain from the suction hopper to the anti-breaking discharge device, and the buffer effect of the anti-breaking discharge device is used to convey the grain to the next suction hopper for quality inspection. Through the design of the discharge plate in the device of the present application, the grain breakage is effectively reduced, the conveying efficiency and the automation level are improved, and the operation and maintenance costs are also reduced. In the embodiment of the present application, the sensor and the solenoid valve are linked to achieve accurate feeding, reduce manual intervention, and improve the inspection efficiency.

[0055] As Figure 9 shown, a plurality of suction pipes 808 are provided on the suction air collecting pipe 802. One end of the suction pipe 808 is connected to the suction air collecting pipe 802 in a penetrating manner, and the other end of the suction pipe 808 extends into the anti-breaking discharge device 401. The material of the suction pipe 808 is a PVC steel wire pipe; it has both flexibility and wear resistance. One end is connected to the suction air collecting pipe 802, and the other end extends into the inside of the discharge device to ensure uniform distribution of the air flow. In the embodiment of the present application, components such as the suction pipe and the discharge device adopt standardized connections, which are convenient for maintenance and expansion.

[0056] The anti-crushing discharger 401 includes a discharger housing 841, in which a filter cartridge 870 is arranged, and the filter cartridge 870 includes a bag fixing cartridge 871 and a bag 872 sleeved on its outer wall; the wall of the bag fixing cartridge 871 is provided with a plurality of circumferentially uniformly distributed air holes 873, and the aperture of the air holes is 0.5-3 mm; one end of the filter cartridge 870 is connected to the suction pipe 808, and the airflow enters the suction pipe 808 through the hole 873, which is used to separate the airflow and the grain. The grain suction pipe 410 is connected to the inner wall of the discharger housing along the tangent direction of the outer circle of the discharger housing 841, and is connected to the inner cavity of the discharger housing 841. The grain enters the inner cavity of the discharger along the tangent direction of the inner wall of the discharger housing 841 through the grain suction pipe 410 and rotates and falls; the grain falls to the discharge port 849 due to gravity, and is buffered by the discharger, effectively reducing the crushing rate. In the embodiment of the present application, a double-layer filter assembly is provided inside the shell, including a stainless steel bag fixing cylinder and a polyester filter bag wrapped therein. Specifically, Φ3mm air holes are evenly arranged on the surface of the fixing cylinder. This structure can effectively intercept grain debris during negative pressure transportation while ensuring smooth airflow.

[0057] The inner wall of the discharger housing 841 is bonded with an anti-collision cushion layer, and the thickness of the anti-collision cushion layer is 1 to 5 mm. In the present application, the inner wall of the discharger housing 841 is entirely covered with a 5 mm thick polyurethane anti-collision cushion layer, and a honeycomb buffer structure is molded on the surface. When high-speed grains rotate and flow through, the cushion layer can absorb the collision energy, and it has been measured that the grain breakage rate can be reduced by 38%.

[0058] The moisture bulk density grade tester 51 includes a grain bulk density tester 511 and a grain moisture tester 512, wherein the grain moisture tester 512 is arranged below the grain bulk density tester 511; the grain bulk density tester 511 includes a leakage box 5111 and a bulk density box 5112 located in the leakage box 5111; a discharge channel 5113 is formed between the leakage box 5111 and the bulk density box 5112, and a discharger 5114 is fixedly arranged at the bottom of the leakage box 5111; the bottom of the bulk density box 5112 is fixedly arranged on the discharger 5114; the grain moisture tester 512 includes a microwave sensor 5121, wherein the microwave sensor 5121 is symmetrically arranged on both sides of the leakage box 5111; the microwave sensor 5121 is fixedly connected to the leakage box 5111; The imperfect grain detector 52, the imperfect grain detector 52 includes an imperfect grain vibrating and leveling device 521, an imperfect grain camera assembly 522, an imperfect grain nozzle 523, an imperfect grain feeder 524, and an imperfect grain weighing scale 525. The imperfect grain feeder 524 is arranged below the imperfect grain vibrating and leveling device 521. The imperfect grain camera assembly 522 is arranged between the imperfect grain vibrating and leveling device 521 and the imperfect grain feeder 524, and is used for taking images of the grains that fall from the imperfect grain vibrating and leveling device 521 into the imperfect grain feeder 524. The imperfect grain nozzle 523 is arranged on one side of the imperfect grain feeder 524; The mildewed grain detector 53, the mildewed grain detector 53 includes a mildewed grain vibrating and leveling device 531, a mildewed grain camera assembly 532, a mildewed grain nozzle 533, a mildewed grain feeder 534, and a mildewed grain weighing scale 535. The mildewed grain feeder 534 is arranged below the mildewed grain vibrating and leveling device 531. The mildewed grain camera assembly 532 is arranged between the mildewed grain vibrating and leveling device 531 and the mildewed grain feeder 534, and is used for taking images of the grains that fall from the mildewed grain vibrating and leveling device 531 into the mildewed grain feeder 534. The mildewed grain nozzle 533 is arranged on one side of the mildewed grain feeder 534; The worm-eaten grain detector 54, the worm-eaten grain detector 54 includes a worm-eaten grain vibrating and leveling device 541, a worm-eaten grain camera assembly 542, a worm-eaten grain nozzle 543, a worm-eaten grain feeder 544, and a worm-eaten grain weighing scale 545. The worm-eaten grain feeder 544 is arranged below the worm-eaten grain vibrating and leveling device 541. The worm-eaten grain camera assembly 542 is arranged between the worm-eaten grain vibrating and leveling device 541 and the worm-eaten grain feeder 544, and is used for taking images of the grains that fall from the worm-eaten grain vibrating and leveling device 541 into the worm-eaten grain feeder 544. The worm-eaten grain nozzle 543 is arranged on one side of the worm-eaten grain feeder 544.

[0059] As Figures 26 to 28 shown, the vibrating feeder 501 includes: A vibrating feeder frame 711; a V-shaped groove feeding plate 714, one end of which is fixedly arranged inside the vibrating feeder frame 711, and the other end extends outside the vibrating feeder frame 711; a through-type lead screw motor 713, located above the V-shaped groove feeding plate 714 and fixedly arranged on one side of the vibrating feeder frame 711; A movable blanking plate 712, arranged above the V-shaped groove feeding plate 714, one end of which is rotatably connected to the vibrating feeder frame 711, and the bottom of the other end is lapped with the lead screw of the through-type lead screw motor 713; a leveling hopper, arranged above the movable blanking plate 712.

[0060] In some embodiments, the V-shaped groove feeding plate 714 is inclined downward from the end inside the vibrating feeder frame 711 to the end outside the vibrating feeder frame 711.

[0061] In some embodiments, a vibrator 715 is provided at the bottom of the V-shaped groove feeding plate 714, and the vibrator 715 is fixedly arranged inside the vibrating feeder frame 711; the top of the vibrator 715 abuts against the lower part of the V-shaped groove feeding plate 714.

[0062] In some embodiments, the bottom of the V-shaped groove feeding plate 714 is connected to the vibrating feeder frame 711 through a shock absorption device. The shock absorption device includes a connecting block, and the bottom of the connecting block is fixedly connected to the vibrating feeder frame 711 through a shock absorption spring; a V-shaped opening matching the outside of the V-shaped groove feeding plate 714 is provided at the top of the connecting block, and the V-shaped groove feeding plate 714 is fixedly arranged in the V-shaped opening.

[0063] In some embodiments, a material leveling photoelectric sensor 716 is fixedly provided at the bottom of one end of the V-shaped groove feeding plate 714 extending outside the vibrating feeder frame 711; the material leveling photoelectric sensor 716, the vision camera group and the vibrating feeder 501 are all electrically connected to the control device.

[0064] The whole tester includes a housing skeleton, which plays a role in supporting and fixing various components inside the tester; a vibrating feeder 501, which is fixedly arranged above the inner side of the housing and is used for vibrating and conveying cereal materials; a material leveling and blanking device 717, which is arranged below the vibrating feeder 501; a blowing device and a vision camera group, which are arranged between the vibrating feeder 501 and the material leveling and blanking device 717; the vision camera group is fixedly arranged on the housing and is used for taking images of the cereal falling from the vibrating feeder 501 into the material leveling and blanking device 717; a collection bin, which is arranged below the material leveling and blanking device 717.

[0065] The material leveling and blanking device 717 includes a first blanking device and a second blanking device; the collection bin includes a first collection bin 718 and a second collection bin 719; the first blanking device is connected to the first collection bin 718 in a communicating manner, and the second blanking device is connected to the second collection bin 719 in a communicating manner; the top openings of the first blanking device and the second blanking device are horizontally arranged along the blowing direction of the blowing device.

[0066] A first weighing instrument is provided at the bottom of the first collection bin 718, and a second weighing instrument is provided at the bottom of the second collection bin 719; the first weighing instrument and the second weighing instrument respectively weigh the cereal materials in the first collection bin 718 and the second collection bin 719.

[0067] In the embodiment of the present application, the imperfect grain inspector 52, the moldy grain inspector 53 and the insect-damaged grain inspector 54 all adopt visual camera component recognition, and the visual camera component is similar in structure and principle to the visual camera component used in the side-by-side impurity selector 403, except for the different number of visual cameras and the different installation positions. In some embodiments, the visual camera component used in the unmanned intelligent inspection machine 5 includes a first visual camera 721, a second visual camera 722, a third visual camera 723 and a fourth visual camera 724, a total of four visual cameras; the setting positions of the four visual cameras are as follows: The path along which the grains conveyed by the vibrating feeder 501 fall to the leveling dropper 717 is a vertical line segment, and the visual camera group is located in any vertical plane where the vertical line segment is located, and the visual camera group is located in the vertical plane with the straight line where the vertical line segment is located as the Y-axis and any horizontal line on the vertical line segment as the four quadrant bisectors of the four quadrants of the plane rectangular coordinate system where the X-axis is located.

[0068] In addition, the blowing device is connected to an external air source pipeline, and a solenoid valve is provided on the pipeline connecting the blowing device and the external air source, and the solenoid valve is electrically connected to the control device. When the visual camera group captures abnormal grains, the blowing device starts blowing. When the blowing device starts blowing, the abnormal grains are blown into the second dropper above the second collection bin 719, and then fall into the second collection bin 719 from the second dropper; when the visual camera group does not capture abnormal grains, the blowing device does not blow, and the normal grains fall into the first dropper above the first collection bin 718 under the action of their own gravity, and then fall into the first collection bin 718 from the first dropper; then the normal grains and the abnormal grains are weighed by the first weighing instrument and the second weighing instrument respectively to obtain the proportion of abnormal grains.

[0069] Example 6 The present application also provides an embodiment of an unmanned grain sampling quality inspection process, comprising the following steps: S1, sampling step, randomly sampling grains through the sampling mechanism 1; S2, sample packaging step, the sampled grain samples are automatically transmitted to the sample packaging machine 2 for packaging and sample retention; S3, a mixing and sampling step, mixing and sampling the grains sampled by the sampling mechanism 1, and sending the sampled grains to the sample packaging machine 2 for packaging; S4, impurity inspection step, the impurities in the grain sample to be inspected are screened, winnowed, selected and separated by the unmanned impurity inspection machine 4, and the impurity percentage and the side-by-side impurity percentage are automatically calculated; S5. Intelligent inspection step: Use the unmanned intelligent inspection machine 5 to automatically analyze and inspect the moisture content grade, the content of imperfect grains, the content of moldy grains, and the content of insect-eaten grains in the grain samples to be inspected, and conduct automatic analysis and inspection on various quality indicators; S6. Result query step: Store and upload the inspection results of the impurity unmanned inspection machine 4, the unmanned intelligent inspection machine 5, and the sample retention packaging machine 2 to the database for users to query the results through the inspection result query machine 6 query system.

[0070] Of course, the above embodiments are not intended to limit the present application, and the present application is not limited to the above examples. Changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the essence of the present application should also fall within the protection scope of the present application.

Claims

1. A grain unmanned sampling and quality inspection device, characterized in that: It includes: A sampling mechanism (1) for sampling grains; A sample retention packaging machine (2) for packaging the retained grains; A sample mixing and dividing machine (3) connected to the sampling mechanism (1) and the sample retention packaging machine (2) respectively, mixing and dividing the grains sampled by the sampling mechanism (1), and transporting the retained grains to the sample retention packaging machine (2) for packaging; An impurity unmanned inspection machine (4), the impurity unmanned inspection machine (4) includes: an anti-breakage discharger (401); an impurity screening machine (402) arranged below the anti-breakage discharger (401) for screening larger impurities; a co-existing impurity separator (403) arranged below the impurity screening machine (402) for separating co-existing grains and normal grains; an impurity air separator (409) arranged on one side of the grain impurity screening machine (402) for air-separating lighter impurities; An unmanned intelligent inspection machine (5), the unmanned intelligent inspection machine (5) includes a moisture and specific gravity grade tester (51), an imperfect grain tester (52), a mildewed grain tester (53) and an insect-eaten grain tester (54); A pneumatic conveying mechanism (8) connected to the sampling mechanism (1), the sample retention packaging machine (2), the sample mixing and dividing machine (3), the impurity unmanned inspection machine (4) and the unmanned intelligent inspection machine (5) respectively for negative pressure conveying of grains.

2. The grain unmanned sampling and quality inspection device according to claim 1, characterized in that: The sampling mechanism (1) includes a sampling rack (11), a guide rail (12) is arranged on the sampling rack (11), a moving block (13) is slidably connected to the guide rail (12), a sampling robotic arm (14) is arranged on the moving block (13), a sampling suction pipe (15) is arranged at the end of the sampling robotic arm (14), a mixer (16) is fixedly arranged on one side of the moving block (13), a sampling discharger (18) is arranged above the mixer (16), the sampling discharger (18) is connected to the sampling suction pipe (15) through a sampling pipeline (17), and the outlet of the sampling discharger (18) faces the mixer (16); a driving motor (131) is arranged on the moving block (13), a gear (132) is arranged at the output end of the driving motor (131), a rack (121) is arranged on the guide rail (12), and the gear (132) is meshed with the rack (121).

3. The grain unmanned sampling and quality inspection device according to claim 1, characterized in that: The sample retention packaging machine (2) includes: A packaging bag film bracket (208) fixed above the cabinet body (220) for winding the packaging bag film; A grain conveying pipe (211) for conveying the retained grains, and the packaging bag film is wrapped outside the grain conveying pipe (211); A bag making machine (204) surrounding the outside of the packaging bag film, the bag making machine (204) includes at least three groups of guide rings, the guide rings are sequentially arranged around the outside of the grain conveying pipe (211), the shape of the guide ring is oval, and the size of the guide ring decreases sequentially from top to bottom; The bag-making vertical sealer (203) is arranged on one side below the bag-making machine (204) and is used for pressing and sealing the edge of the packaging bag film; The roller device (222) is arranged on the lower side of the bag-making vertical sealer (203) and is used for driving the packaging bag film to move; The inkjet printer (202) is arranged below the bag-making vertical sealer (203) and is used for inkjet printing on the sample-keeping bag; The bottom sealer (201) is arranged below the inkjet printer (202).

4. The unmanned grain sampling and quality inspection device according to claim 1, wherein: The impurity air separator (409) includes an impurity discharger (407), an air-separated impurity suction pipe (408), and an air separator housing (491). A grain feeding port (494) and a grain discharging port (493) are arranged on the air separator housing (491). The grain feeding port (494) is communicated with the grain discharging port (493), and an air inlet (492) is arranged between the grain feeding port (494) and the grain discharging port (493). An air outlet (495) is arranged above the air separator housing (491), and the air outlet (495) is connected to the air-separated impurity suction pipe (408). A baffle (496) is arranged at the air inlet (492), and the baffle (496) inclines towards the grain discharging port (493). The impurity air separator (409) is connected to an air suction collecting pipe (802). The impurity discharger (407) and the air suction collecting pipe (802) are connected through an air suction switch solenoid valve, and the outlet of the impurity discharger (407) is connected to an impurity weighing scale (415).

5. The unmanned grain sampling and quality inspection device according to claim 1, wherein: The impurity screening machine (402) includes a sieve frame (431). A sieve body (430) is arranged on the sieve frame (431). The sieve body (430) is movably connected to the sieve frame (431). A driving mechanism (434) is arranged below the sieve frame (431), and its movable end is hinged to the sieve body (430) and is used for driving the sieve body (430) to shake; The sieve body (430) includes a large impurity sieve (432), a small impurity sieve (433), and a sieve shell (440). The large impurity sieve (432) and the small impurity sieve (433) are respectively inserted and movably connected to the sieve shell (440). The large impurity sieve (432) is arranged above the small impurity sieve (433). One end of the sieve shell (440) is hinged to the driving mechanism (434), and the sieve shell (440) is slidably connected to the sieve frame (431); The driving mechanism (434) includes a vibration motor (443), an eccentric wheel (444) and a connecting rod (445). The vibration motor (443) is fixedly connected to the sieve frame (431). The output shaft of the vibration motor (443) is connected to the eccentric wheel (444). One end of the connecting rod (445) is hinged to the eccentric wheel (444). Slide rails (439) are respectively arranged on both sides of the sieve frame (431). Sliders (438) are sleeved on the slide rails (439). The sliders (438) are fixedly connected to the sieve housing (440). The other end of the connecting rod (445) is hinged to an ear plate (446). The ear plate (446) is arranged below the sieve housing (440). One end of the sieve housing (440) is fixedly connected to the ear plate (446). A bracket (436) is arranged below the sieve frame (431). The sieve frame (431) is hingedly connected to the bracket (436). A lifting mechanism (442) is arranged at the opposite end below the sieve frame (431) and the bracket (436). The lifting mechanism (442) is used to lift one end of the sieve frame (431).

6. The grain unmanned sampling and quality inspection device according to claim 1, characterized in that: The parallel impurity separator (403) includes: A vibrating feeder (501) for conveying grain particles; A material receiver (506) is arranged below the vibrating feeder (501). The material receiver (506) is provided with two outlets, which are respectively communicated with a parallel impurity weighing scale (404) and a grain weighing scale (405), and is used for separating parallel impurities and grains; A vision camera assembly is arranged between the vibrating feeder (501) and the material receiver (506); A nozzle (505) is arranged at the inlet of the material receiver (506). The nozzle (505) includes an air source pipeline and an electromagnetic valve. The electromagnetic valve is electrically connected to the vision camera assembly. When the vision camera group captures parallel grains, the nozzle (505) starts the electromagnetic valve to open, and is used for separating parallel impurities; A photoelectric sensor (502) is arranged at the outlet of the vibrating feeder (501) and is electrically connected to the vision camera assembly, and is used to start the vision camera assembly to perform visual recognition on the grains; The vision camera assembly includes a parallel camera (504) and a material lamp (503). There are two groups of the material lamps (503), which are respectively arranged on both sides of the parallel camera (504). There is one group of the parallel cameras (504), which are arranged on one side of the vertical plane at the outlet of the vibrating feeder (501). The included angle between the axis of the parallel camera (504) and the horizontal plane ranges from 20 degrees to 70 degrees.

7. The grain unmanned sampling and quality inspection device according to claim 1, characterized in that: The anti-breakage discharger (401) includes: A discharger housing (841) whose interior forms a grain accommodation cavity. The top of the discharger housing (841) is connected to the pneumatic conveying mechanism (8) for introducing grains; A discharge plate (842) is arranged at the bottom outlet of the grain accommodation cavity. The discharge plate (842) is hingedly connected to the discharger housing (841) through a hinge shaft and can rotate around the hinge shaft to open and close, and is used for discharging and storing grains; The driving component (850) is fixed on the discharge device housing (841) and is used to provide a closing torque to the discharge plate (842), driving the discharge plate (842) to close towards the discharge device housing (841).

8. The unmanned grain sampling and quality inspection device according to claim 7, characterized in that: The pneumatic conveying mechanism (8) includes a suction fan (801). The air inlet side of the suction fan (801) is connected to the suction air collecting pipe (802) in a penetrating manner. A plurality of suction air switch solenoid valves (803) are arranged on the suction air collecting pipe (802). The suction air switch solenoid valves (803) are connected to the suction air pipe (808) of the anti-breakage discharge device (401). A suction hopper (806) is arranged on one side of the anti-breakage discharge device (401). A grain suction pipe (410) is connected between the suction hopper (806) and the anti-breakage discharge device (401). A material sensor (807) is arranged at the bottom of the suction hopper (806). The material sensor (807) is electrically connected to the suction air switch solenoid valve (803). The lower end of the anti-breakage discharge device (401) is provided with a discharge port (849), and the outlet of the discharge port (849) faces the next suction hopper (806).

9. The unmanned grain sampling and quality inspection device according to claim 1, characterized in that: The moisture and specific gravity grade tester (51) includes a grain specific gravity tester (511) and a grain moisture tester (512). The grain moisture tester (512) is arranged below the grain specific gravity tester (511). The grain specific gravity tester (511) includes a leakage hopper (5111) and a specific gravity box (5112) located inside the leakage hopper (5111). An outlet channel (5113) is formed between the leakage hopper (5111) and the specific gravity box (5112). A discharge device (5114) is fixedly arranged at the bottom of the leakage hopper (5111). The bottom of the specific gravity box (5112) is fixedly arranged on the discharge device (5114). The grain moisture tester (512) includes microwave sensors (5121). The microwave sensors (5121) are symmetrically arranged on both sides of the leakage hopper (5111). The microwave sensors (5121) are fixedly connected to the leakage hopper (5111). The imperfect grain tester (52) includes an imperfect grain vibrating and leveling device (521), an imperfect grain camera assembly (522), an imperfect grain nozzle (523), an imperfect grain blanking device (524), and an imperfect grain weighing scale (525). The imperfect grain blanking device (524) is arranged below the imperfect grain vibrating and leveling device (521). The imperfect grain camera assembly (522) is arranged between the imperfect grain vibrating and leveling device (521) and the imperfect grain blanking device (524) and is used to capture images of the grains that fall from the imperfect grain vibrating and leveling device (521) into the imperfect grain blanking device (524). The imperfect grain nozzle (523) is arranged on one side of the imperfect grain blanking device (524). The moldy grain inspection instrument (53) comprises a moldy grain vibration sizing device (531), a moldy grain camera assembly (532), a moldy grain nozzle (533), a moldy grain feeder (534), and a moldy grain weighing scale (535); the moldy grain feeder (534) is arranged below the moldy grain vibration sizing device (531); the moldy grain camera assembly (532) is arranged between the moldy grain vibration sizing device (531) and the moldy grain feeder (534) and is used to take images of grains falling from the moldy grain vibration sizing device (531) into the moldy grain feeder (534); the moldy grain nozzle (533) is arranged on one side of the moldy grain feeder (534); A worm-eaten grain inspection instrument (54), the worm-eaten grain inspection instrument (54) comprising a worm-eaten grain vibrating sizing device (541), a worm-eaten grain camera assembly (542), a worm-eaten grain nozzle (543), a worm-eaten grain dropper (544), and a worm-eaten grain weighing scale (545), the worm-eaten grain dropper (544) being arranged below the worm-eaten grain vibrating sizing device (541), the worm-eaten grain camera assembly (542) being arranged between the worm-eaten grain vibrating sizing device (541) and the worm-eaten grain dropper (544), and being used for photographing images of grains dropped from the worm-eaten grain vibrating sizing device (541) into the worm-eaten grain dropper (544); and the worm-eaten grain nozzle (543) being arranged on one side of the worm-eaten grain dropper (544).

10. An unmanned grain sampling quality inspection process, characterized in that: The following steps are involved: S1, a sampling step, randomly sampling grains by a sampling mechanism (1); S2, a sample packaging step, wherein the grain sample is automatically transferred to a sample packaging machine (2) for packaging; S3, a mixing and sampling step, mixing and sampling the grains sampled by the sampling mechanism (1), and sending the sampled grains to the sample packaging machine (2) for packaging; S4, impurity inspection step, using the unmanned impurity inspection machine (4) to screen, winnow, select and separate the impurities in the grain sample to be inspected, and automatically calculate the impurity percentage and the side-by-side impurity percentage; S5, intelligent inspection step, using the unmanned intelligent inspection machine (5) to inspect the moisture bulk density level, the content of imperfect grains, the content of moldy grains, and the content of insect-damaged grains in the grain samples to be inspected, and automatically analyze and inspect various quality indicators; S6, a result query step, storing and uploading the inspection and testing results of the unmanned impurity inspection machine (4), the unmanned intelligent inspection machine (5) and the sample packaging machine (2) to a database for users to query the results through the inspection result query machine (6) query system.

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