Unmanned intelligent inspection all-in-one machine for grain impurities

Abstract

The utility model relates to an unmanned intelligent inspection all-in-one machine for grain impurities, which belongs to the technical field of grain detection and comprises an air suction collecting pipe, an anti-breaking unloader, an impurity screening machine, an impurity winnowing device and a side-by-side impurity classificator and is used for separating side-by-side grains from normal grains. The impurity metering scale is respectively connected with the impurity screening machine and an outlet of the impurity winnowing device and is used for weighing the impurities; the side-by-side impurity metering scale is used for weighing the side-by-side impurities; the grain metering scale is used for weighing grains; and the hopper is connected with the anti-crushing unloader and is used for providing inspection grains. According to the utility model, the integrated automatic inspection process is realized by integrating the air suction collecting pipe, the anti-crushing unloader, the impurity screening machine, the impurity winnowing device, the side-by-side impurity classificator, the impurity metering scale, the side-by-side impurity metering scale, the grain metering scale, the hopper and the like. And compared with the traditional manual or semi-automatic inspection mode, the inspection efficiency is greatly improved, the manual intervention is reduced, and the labor intensity is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain detection, and in particular relates to an unmanned intelligent all-in-one machine for detecting grain impurities. Background Art

[0002] Traditional methods for inspecting grain for impurities involve manual sampling, screening, and weighing. These methods are not only inefficient but also prone to human error, resulting in inaccurate results. Furthermore, manual operations are labor-intensive and costly, making them difficult to meet the needs of large-scale grain inspection and processing.

[0003] In response to the above problems, some patents have proposed improvement plans in recent years. For example, Chinese patent number CN118731021A discloses an intelligent grain impurity inspection instrument. This patent can roughly separate grains from impurities through an impurity screening machine and an impurity winnowing machine. However, it cannot perform fine separation of larger impurities, smaller impurities, lighter impurities and side-by-side impurities contained in the grains, which affects the separation efficiency between grain impurities. This patent realizes the automation and intelligence of the entire process from grain feeding to impurity separation and weighing. Utility Model Content

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] An unmanned intelligent all-in-one machine for inspecting grain impurities, comprising a suction manifold; an anti-crushing discharger connected to the suction manifold; an impurity screening machine arranged below the anti-crushing discharger for screening larger impurities; an impurity air separator arranged on one side of the grain impurity screening machine for air separating lighter impurities; a side-by-side impurity selector arranged below the impurity screening machine for separating side-by-side grains from normal grains; an impurity weighing scale connected to the outlets of the impurity screening machine and the impurity air separator respectively for weighing impurities; a side-by-side impurity weighing scale arranged below the side-by-side impurity selector for weighing side-by-side impurities; a grain weighing scale arranged below the side-by-side impurity selector for weighing grains; and a hopper connected to the anti-crushing discharger for providing grain for inspection.

[0006] According to the above technical solution, it is further preferred that a suction switch solenoid valve is provided between the suction collection pipe and the anti-crushing discharger, a grain suction pipe is provided between the anti-crushing discharger and the hopper, a material sensor is provided at the bottom of the hopper, the material sensor is electrically connected to the suction switch solenoid valve, and a grain impurity inspection and measuring scale is provided above the hopper for weighing the total weight of grain and impurities.

[0007] Furthermore, the impurity screening machine includes a large impurity screen, a small impurity screen and a sieve shell. The large impurity screen and the small impurity screen are movably connected to the sieve shell respectively. The large impurity screen is arranged above the small impurity screen. A driving mechanism is connected to the bottom of the sieve shell, and the driving mechanism is used to drive the sieve shell to shake.

[0008] Furthermore, the driving mechanism includes a vibration motor, an eccentric wheel and a connecting rod, the vibration motor is fixedly connected to the sieve shell, 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 the bracket, the bracket is arranged below the sieve shell, and one end of the sieve shell is hingedly connected to the bracket; slide rails are respectively provided on both sides of the sieve shell, and a slider is provided on the slide rail, and the slider is fixedly connected to the sieve shell.

[0009] Furthermore, a lifting mechanism is provided below the sieve shell at one end opposite to the bracket, and the lifting mechanism is used to lift one end of the sieve body.

[0010] Furthermore, the impurity air separator includes an impurity discharger, an air separation impurity suction pipe and an air separator shell, and the air separator shell is provided with a grain discharge port and a grain discharge port, the grain discharge port is communicated with the grain discharge port, and an air inlet is provided between the grain discharge port and the grain discharge port; an air outlet is provided above the air separator shell, the air outlet is connected to the air separation impurity suction pipe, and the air outlet is provided directly above the grain discharge port; a baffle is provided at the air inlet, and the baffle is inclined toward the side of the grain discharge port.

[0011] Furthermore, an air separator is provided at the end of the sieve body, and a discharge port is provided at the end of the small miscellaneous screen, and the discharge port extends to above the air separator.

[0012] Furthermore, the side-by-side impurity separator includes:

[0013] Vibrating feeder for conveying grain particles;

[0014] The material receiver is arranged below the vibrating feeder and has two outlets, which are connected to the side-by-side impurities weighing scale and the grain weighing scale respectively, for separating the side-by-side impurities and grains;

[0015] A visual camera assembly is provided between the vibrating feeder and the receiver;

[0016] The nozzle is set at the inlet of the material receiver. The nozzle includes an air source pipeline and a solenoid valve. The solenoid valve is electrically connected to the visual camera assembly. When the visual camera assembly captures the side-by-side grains, the nozzle starts the solenoid valve to open, which is used to separate the side-by-side impurities.

[0017] The photoelectric sensor is arranged at the outlet of the vibrating feeder and is electrically connected to the camera assembly to activate the camera assembly to perform visual recognition of the grains.

[0018] Furthermore, the visual camera assembly includes a camera and a material light, the material lights are in two groups, respectively arranged on both sides of the camera; the camera is in one group, the grain falling path at the outlet of the vibrating feeder is a vertical line segment, the camera is located in any vertical plane where the vertical line segment is located, and the camera is located in the vertical plane, with the straight line where the vertical line segment is located as the Y-axis, and the axis passing through the camera as the X-axis, and the angle between the X-axis and the Y-axis is in the range of 20 degrees to 70 degrees.

[0019] Furthermore, there are two groups of cameras, and the grain falling path at the vibrating feeder outlet is a vertical line segment. The cameras are located in any vertical plane where the vertical line segment is located. The two groups of cameras are respectively arranged on both sides of the vertical line segment, with the straight line where the vertical line segment is located as the Y-axis. The two groups of cameras are collinear, and the axis passing through the camera is the X-axis. The angle between the X-axis and the Y-axis is in the range of 10 degrees to 80 degrees.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This utility model provides an all-in-one, unmanned intelligent grain impurity inspection machine. By integrating a suction manifold, an anti-crushing discharger, an impurity screening machine, an impurity air separator, a side-by-side impurity separator, an impurity weighing scale, a grain weighing scale, and a hopper, it achieves an integrated, automated inspection process. Compared to traditional manual or semi-automatic inspection methods, this significantly improves inspection efficiency, reduces manual intervention, and lowers labor intensity.

[0022] 2. This utility model provides an all-in-one, unmanned intelligent inspection machine for grain impurities. By optimizing the sieve shell structure, including a layered design with large and small impurity sieves, this system more effectively separates impurities of varying particle sizes during grain screening. The large impurity sieve is positioned above the small impurity sieve. This layered design allows large impurities to be separated first by the upper large impurity sieve, while smaller impurities are further screened by the lower small impurity sieve, significantly improving screening efficiency. Compared to existing single sieve shell or simple double-layer sieve shell designs, this utility model can more efficiently complete impurity separation tasks.

[0023] 3. This utility model provides an unmanned, intelligent, integrated grain impurity inspection system. Equipped with intelligent control components such as a suction switch solenoid valve, a material sensor, and a grain impurity inspection scale, this system enables real-time monitoring and control of the inspection process. The electrical connection between the material sensor and the suction switch solenoid valve ensures smooth material flow and stable system operation. The linkage between the visual camera assembly and the nozzle enables automatic identification and separation of side-by-side impurities, enhancing the system's intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is a schematic diagram of the structure of the device of the utility model;

[0025] Figure 2 This is a side structural diagram of the device of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the impurity screening machine of the utility model;

[0027] Figure 4 This is a side structural diagram of the impurity screening machine of the utility model;

[0028] Figure 5 This is a schematic structural diagram of the slider of the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the impurity air separator of the utility model;

[0030] Figure 7 This is a structural diagram of the side-by-side impurity separator of the utility model.

[0031] In the figure: 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 test suction hopper, 407, impurity discharger, 408, air separation impurity suction pipe, 409, impurity air separator, 410, grain suction pipe, 411, grain impurity inspection and weighing scale, 412, hopper, 413, material sensor, 414, grain recovery hopper, 415, impurity weighing scale, 416, impurity recovery hopper, 430, sieve body, 431, sieve frame, 4 32. Large miscellaneous screen, 433. Small miscellaneous screen, 434. Driving mechanism, 435. Discharge port, 436. Bracket, 437. Impurity discharge box, 438. Slider, 439. Slide rail, 440. Sieve shell, 441. Fixed angle iron, 442. Lifting mechanism, 443. Vibrating motor, 444. Eccentric wheel, 445. Connecting rod, 446. Ear plate, 491. Air separator shell, 492. Air inlet, 493. Grain discharge port, 494. Grain discharge port, 495. Air outlet, 496. Baffle, 501. Vibrating feeder, 502. Photoelectric sensor, 503. Material light, 504. Camera, 505. Nozzle, 506. Material receiver, 802. Suction collection pipe, 803. Suction switch solenoid valve. DETAILED DESCRIPTION

[0032] The present invention 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 invention. Obviously, the described embodiments are only part of the embodiments of the present invention, 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 invention.

[0033] Example 1

[0034] like Figures 1 to 7 As shown, the utility model provides an unmanned intelligent integrated inspection machine for grain impurities, including an air suction collection pipe 802; an anti-crushing discharger 401, which is connected to the air suction collection pipe 802; an impurity screening machine 402, which is arranged below the anti-crushing discharger 401 and is used to screen larger impurities; an impurity air separator 409, which is arranged on one side of the grain impurity screening machine 402 and is used to air separator lighter impurities; a side-by-side impurity selector 403, which is arranged below the impurity screening machine 402 and is used to separate side-by-side grains and normal grains; an impurity weighing scale 415, which is respectively connected to the outlets of the impurity screening machine 402 and the impurity air separator 409 and is used to weigh impurities; a side-by-side impurity weighing scale 404, which is arranged below the side-by-side impurity selector 403 and is used to weigh side-by-side impurities; a grain weighing scale 405, which is arranged below the side-by-side impurity selector 403 and is used to weigh grains; a hopper 412, which is connected to the anti-crushing discharger 401 and is used to provide inspection grains.

[0035] The suction manifold 802 is connected to a suction fan, which serves as the power source of the system and drives the grain transportation through negative pressure airflow. The air inlet side of the suction fan is connected to the suction manifold 802. The suction manifold 802 is made of stainless steel or galvanized iron pipe to ensure corrosion resistance and structural strength. Specifically, the suction manifold 802 is connected to the anti-crushing discharger 401, and the anti-crushing discharger 401 independently controls the air flow through the suction switch solenoid valve 803. A hopper 412 is provided on one side of the anti-crushing discharger 401. A grain impurity inspection scale 411 is provided above the hopper 412 for weighing the total weight of grain and impurities. A grain suction pipe 410 is connected between the hopper 412 and the anti-crushing discharger 401. The solenoid valve is electrically connected to the material sensor 413 at the bottom of the hopper 412 to achieve automatic opening and closing. A discharge port is provided at the lower end of the anti-crushing discharger 401. The discharge port outlet faces the grain impurity screening machine 402 for grain impurity screening and inspection.

[0036] Specifically, when a material sensor 413 at the bottom of hopper 412 detects that grain needs to be inspected in the suction hopper, it is electrically connected to the suction switch solenoid valve 803. Material sensor 413, which uses a capacitive or photoelectric sensor, monitors the grain level in the suction hopper in real time and transmits the signal to the control system. The system controls the opening and closing of the solenoid valve according to preset logic, enabling unmanned operation. When the solenoid valve of the anti-crushing discharger 401 is opened, grain enters the system through the hopper 412. A grain impurity inspection scale 411 is installed above the hopper 412 to weigh the total weight of the grain and impurities. The grain is then transported to the anti-crushing discharger 401 through the grain suction pipe 410. Due to the negative pressure generated by the suction fan, the discharge plate of the anti-crushing discharger seals the discharge port, and the grain is transported to the anti-crushing discharger. The grain accumulates at the discharge port under the action of gravity. When the material sensor 413 detects that the amount of grain in the suction hopper has reached the threshold, it triggers the suction switch solenoid valve 803 to close, stopping the current conveying. After the downstream process is completed, the solenoid valve is reopened to achieve precise batch feeding. When it is necessary to continue conveying to the next level of inspection equipment, the switch solenoid valve of the anti-crushing discharger is closed, and the grain opens the discharge plate under the action of gravity, and the grain falls from the discharge port into the suction hopper of the next level. This device is equipped with a discharge plate. This plate, in conjunction with an on / off solenoid valve, precisely controls the opening and closing of the anti-crushing discharger. The negative pressure generated by the suction fan transports the grain from the suction hopper to the anti-crushing discharger. The anti-crushing discharger then buffers the grain and transfers it to the next suction hopper for quality inspection. The discharge plate design effectively reduces grain breakage, improves conveying efficiency and automation, and reduces operating and maintenance costs. In this embodiment, sensors and solenoid valves are linked to achieve precise feeding, reducing manual intervention and improving inspection efficiency.

[0037] The impurity screening machine 402 includes a sieve frame 431, on which a sieve body 430 is mounted. The sieve body 430 is movably connected to the sieve frame 431. A drive mechanism 434 is disposed below the sieve frame 431. The movable end of the drive mechanism 434 is hingedly connected to the sieve body 430, and the drive mechanism 434 is used to drive the sieve body 430 to shake. The sieve body 430 includes a large impurity screen 432, a small impurity screen 433, and a sieve shell 440. The large impurity screen 432 and the small impurity screen 433 are respectively connected to the sieve shell 440 by plugging and movably connecting. The large impurity screen 432 is disposed above the small impurity screen 433. One end of the sieve shell 440 is hingedly connected to the drive mechanism 434, and the sieve shell 440 is slidably connected to the sieve frame 431. In the embodiment of the present invention, the sieve shell 440 is a rectangular parallelepiped structure, formed by welding stainless steel, and a large impurity screen 432 (aperture 8mm) and a small impurity screen 433 (aperture 2mm) are installed in sequence from top to bottom inside. The two are movably connected to the side wall of the sieve shell 440 by snaps, which are convenient for disassembly and replacement. The bottom of the sieve shell 440 is fixedly connected to the driving mechanism 434, and the driving mechanism 434 drives the sieve shell 440 to swing back and forth in the horizontal direction; the end of the sieve shell 440 is connected to the impurity discharge box 437 for collecting the impurities after screening. The lower hopper is provided at the top of the sieve shell 440, and three rectangular outlets (unnumbered) are provided at the bottom thereof, facing the front, middle and rear areas of the sieve shell 440 respectively, to ensure that the grains are evenly dispersed on the surface of the sieve.

[0038] The drive 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 provided on both sides of the sieve frame 431. The slide rails 439 are provided with sliders 438, and the sliders 438 are fixedly connected to the sieve shell 440. The other end of the connecting rod 445 is hingedly connected to an ear plate 446, which is provided below the sieve shell 440. One end of the sieve shell 440 is fixedly connected to the ear plate 446. In this embodiment of the utility model, 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 shell 440 is 1.5 times per second. Vibration motor 443 is bolted to the bottom of sieve frame 431, with its output shaft keyed to eccentric wheel 444. Connecting rod 445 is hinged to eccentric wheel 444 at one end and hinged to lug plate 446 at the other end via a pin. Lug plate 446 is a U-shaped double-lug plate with a circular hole for hinged connection with connecting rod 445. When vibration motor 443 rotates, one end of connecting rod 445 rotates with eccentric wheel 444, while the other end drives sieve housing 440 to swing. Sieve housing 440 slides with slider 438 via slide rail 439, achieving back-and-forth reciprocating swinging, thereby screening out impurities. In this embodiment, the slide rails 439 are two parallel cylindrical rails (0.6m long) fixed to either side of the sieve housing 440 and respectively fixedly connected to the sieve frame 431. The sliders 438 are copper-based graphite bushings that fit over the slide rails 439 and are bolted to the sieve housing 440 via fixed angle irons 441 (5mm thick) using M10 bolts spaced 150mm apart. This rail-slider structure reduces frictional resistance when the sieve housing 440 is shaken and limits its motion.

[0039] A bracket 436 is located below the sieve frame 431. The sieve body 430 is hingedly connected to the bracket 436. A lifting mechanism 442 is located below the sieve body 430 at the end opposite the bracket 436. This lifting mechanism 442 is used to raise one end of the sieve body 430. In this embodiment, the bracket 436 is an H-shaped steel frame fixed to the ground. The end of the sieve shell 440 is connected to the bracket 436 via a hinged axis. When the lifting mechanism 442 is raised or lowered, the end of the sieve shell 440 rotates about the hinged axis, discharging the grain or impurities. The lifting mechanism 442 can be an electric cylinder or a hydraulic cylinder. In this embodiment, the lifting mechanism 442 is 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 shell 440. The electric cylinder is adjusted by a controller to adjust the inclination angle of the sieve shell 440 (adjustable range: 0° to 15°), thereby controlling the flow rate of grain or impurities on the sieve body.

[0040] During use, the driving mechanism 434 is started, and the vibration motor 443 drives the eccentric wheel 444 to rotate, and the connecting rod 445 drives the sieve shell 440 to swing back and forth with the hinge end as the axis (amplitude ±15mm, frequency 1.5Hz); the grain falls evenly into the large sieve 432 from the lower hopper, and large particles of impurities (such as straw and stones) are intercepted and slide towards the impurity discharge box 437 with the shaking of the sieve shell; the grain passing through the large sieve 432 falls into the small sieve 433, and fine impurities (such as sand and debris) pass through the sieve holes into the discharge port 435, and are discharged after secondary sorting by the air separator 491; the clean grain falls into the collection bin from the end of the small sieve 433; when the sorting efficiency needs to be adjusted, the inclination angle of the sieve shell 440 is adjusted through the lifting mechanism 442, or the sieves of different apertures are replaced.

[0041] An impurity air separator 409 is provided at the end of the sieve shell 440 , and a discharge port 435 is provided at the end of the small impurity sieve 433 . The discharge port 435 extends to the top of the impurity air separator 409 .

[0042] During use, the driving mechanism 434 is started, the vibration motor 443 drives the eccentric wheel 444 to rotate, and the connecting rod 445 drives the sieve shell 440 to swing back and forth with the hinge end as the axis; the grains fall evenly into the large sieve 432 from the lower hopper, and the large particles of impurities are intercepted and slide to the impurity discharge box 437 with the shaking of the sieve shell; the grains passing through the large sieve 432 fall into the small sieve 433, and the fine impurities pass through the sieve holes into the discharge port 435, and are discharged after secondary sorting by the air separator 491; the clean grains fall into the collection bin from the end of the small sieve 433; when the sorting efficiency needs to be adjusted, the inclination angle of the sieve shell 440 is adjusted through the lifting mechanism 442, or the sieves of different apertures are replaced.

[0043] Example 2

[0044] The difference between this embodiment and Example 1 is the difference in the structure of the impurity air separator. The impurity air separator 409 is arranged on one side of the grain impurity screening machine 402 and is used to air separate lighter impurities. The impurity air separator 409 is connected to the suction collection pipe 802. An air suction solenoid valve is provided between the impurity discharger 407 and the suction collection pipe 802. The outlet of the impurity discharger 407 is connected to the impurity metering scale 415. The impurity air separator 409 includes an impurity discharger 407, an air separation impurity suction pipe 408 and an air separator shell 491. The air separator shell 491 is provided with a grain discharge port 494 and a grain discharge port 493. The grain discharge port 494 is connected to the grain discharge port 493, and an air inlet 492 is provided between the grain discharge port 494 and the grain discharge port 493; an air outlet 495 is provided above the air separator shell 491, and the air outlet 495 is connected to the air separation impurity suction pipe 408. The air outlet 495 is provided directly above the grain discharge port 493; a baffle 496 is provided at the air inlet 492, and the baffle 496 is inclined toward the side of the grain discharge port 493. The air separator housing 491 is provided with an air outlet 495 at the top, a grain discharge port 494 at the top, and a grain discharge port 493 at the bottom. The grain discharge port 494 is a conical hopper, its outlet located above the air inlet 492 and communicating with the grain discharge port 493. The air inlet 492 is located on the side wall of the housing between the grain discharge port 494 and the grain discharge port 493, and is used to introduce external airflow. The suction manifold 802 is connected to the impurity discharger 407 via a suction switch solenoid valve 803. The air separation impurity suction pipe 408 is connected to the air outlet 495 at one end and to the suction manifold of an external negative pressure device at the other end, forming a closed airflow loop. The impurity discharger 407 is a funnel-shaped shell, and a discharge plate is provided at the outlet of the impurity discharger 407. The discharge plate is connected to the shell through a hinge shaft. The impurity discharger is negative pressure controlled. When the impurities accumulate to a set amount, the suction switch solenoid valve is closed, and the impurities fall under the action of gravity. When unloading or sealing is not required, negative pressure control is performed inside the discharger, and the discharge plate seals the discharger outlet under the action of negative pressure.

[0045] Example 3

[0046] The side-by-side impurity selector 403 includes: a vibrating feeder 501 for conveying grain particles; a material receiver 506, which is arranged below the vibrating feeder 501, and the material receiver 506 is provided with two outlets, which are respectively connected to the side-by-side impurity metering scale 404 and the grain metering scale 405, for separating side-by-side impurities and grains; a visual camera assembly, which is arranged between the vibrating feeder 501 and the material receiver 506; a nozzle 505, which is arranged at the inlet of the material receiver 506, and the nozzle 505 includes an air source pipeline and a solenoid valve, which is electrically connected to the visual camera assembly. When the visual camera group captures side-by-side grains, the nozzle 505 starts the solenoid valve to open, for separating side-by-side impurities; a photoelectric sensor 502, which is arranged at the outlet of the vibrating feeder 501, and is electrically connected to the camera assembly, for starting the camera assembly to perform visual recognition of the grains. In this embodiment of the present invention, the side-by-side impurity selector 403 also includes a housing for mounting and supporting components. The visual camera assembly in the side-by-side impurity selector system includes: a camera for capturing images of the grain shape; a light source system for ensuring clear visibility of object features such as color, shape, and barcodes; an image processing unit (IPC) or an embedded vision system such as Halcon, OpenCV, or Cognex VisionPro; and a programmable logic controller (PLC) such as a Siemens S7-1200 or Mitsubishi FX series controller, serving as the logic control core. Sensors include photoelectric sensors and position sensors for triggering the camera to capture images.

[0047] The visual camera assembly includes a camera 504) and a material light 503. The material lights 503 are in two groups, respectively arranged on both sides of the camera 504; the camera 504 is in one group, and the grain falling path at the outlet of the vibrating feeder 501 is a vertical line segment. The camera 504 is located in any vertical plane where the vertical line segment is located, and the camera 504 is located in the vertical plane, with the straight line where the vertical line segment is located as the Y axis, and the axis passing through the camera 504 as the X axis, and the angle between the X axis and the Y axis is in the range of 20 degrees to 70 degrees.

[0048] In a further preferred embodiment, the camera 504 is provided in two groups. The grain drop path at the outlet of the vibrating feeder 501 is a vertical line segment. The camera 504 is located in any vertical plane where the vertical line segment is located. The two groups of cameras 504 are respectively arranged on both sides of the vertical line segment. The straight line where the vertical line segment is located is the Y-axis. The two groups of cameras 504 are collinear. The axis passing through the camera 504 is the X-axis. The angle between the X-axis and the Y-axis ranges from 10 degrees to 80 degrees. The camera 504 is provided in one group and is arranged on one side of the vertical plane at the outlet of the vibrating feeder 501. When the litigation camera 504 is provided in two groups, they are respectively arranged in any vertical plane of the grain drop path and are located on both sides of the grain drop path. The two groups of cameras 504 are respectively arranged opposite each other for visual identification of grain and disease inspection impurities, and can distinguish and separate impurities side by side, and blow the impurities side by side to the side by side impurity weighing scale 404.

[0049] Workflow:

[0050] Grain detection trigger:

[0051] When the vibrating feeder 501 transports grains evenly according to the intervals between grain particles, and the grains fall freely after passing the end of the vibrating feeder 501, the photoelectric sensor 502 is arranged below the end of the vibrating feeder 501. When it detects that the grains have entered the sorting area, it triggers the camera component to take a picture. After receiving the signal from the photoelectric sensor 502, the PLC sends a picture-taking instruction to the camera component. The camera takes an image of the grain and transmits it to the image processing unit via Ethernet or a serial port. The image processing algorithm extracts features mainly based on shape features. The shape of the side-by-side impurities is different from that of the grains. The graphics processing unit sends the processing result to the PLC whether it is side-by-side impurities. The PLC calculates the action timing of the actuator, specifically the nozzle 505, based on the received grain inspection information and sensor feedback such as object position and falling speed. The output control signal drives the actuator nozzle 505 to act, separates the side-by-side impurities from the grains, blows the side-by-side impurities into the grain side-by-side impurity weighing scale, and comprehensively calculates the ratio of the side-by-side impurities to the total weight of the grains to obtain the percentage of side-by-side impurities in the grains.

[0052] Example 4

[0053] The difference between this embodiment and embodiment 3 is the number of camera components. The cameras 504 are divided into two groups and are arranged on both sides of the vertical plane at the outlet of the vibrating feeder 501. Specifically, the two groups of cameras 504 can be arranged on the same straight line or on different straight lines. The angle between the axis of the camera 504 and the horizontal plane ranges from 10 degrees to 80 degrees.

[0054] Of course, the above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An unmanned intelligent all-in-one machine for detecting grain impurities, characterized by: An impurity screening machine (402), arranged below the anti-crushing discharger (401), is used to screen larger impurities; An impurity air separator (409), provided on one side of the grain impurity screening machine (402), is used for air separation of lighter impurities; The side-by-side impurity separator (403) is arranged below the impurity screening machine (402) and is used to separate the side-by-side grains from the normal grains; An impurity weighing scale (415) is connected to the outlets of the impurity screening machine (402) and the impurity winnowing device (409) respectively, and is used to weigh impurities; A side-by-side impurity weighing scale (404), disposed below the side-by-side impurity selector (403), is used to weigh the side-by-side impurities; The grain weighing scale (405) is arranged below the side-by-side impurity selector (403) and is used for weighing grains.

2. The unmanned intelligent all-in-one inspection machine for grain impurities according to claim 1, characterized in that: It also includes an air suction collection pipe (802) and a hopper (412), wherein the air suction collection pipe (802) is connected to the anti-crushing discharger (401) pipeline for providing inspection grains; A suction switch electromagnetic valve (803) is provided between the suction collecting pipe (802) and the anti-crushing discharger (401), a grain suction pipe (410) is provided between the anti-crushing discharger (401) and the hopper (412), a material sensor (413) is provided at the bottom of the hopper (412), and the material sensor (413) is electrically connected to the suction switch electromagnetic valve (803), and a grain impurity inspection and measuring scale (411) is provided above the hopper (412) for weighing the total weight of grain and impurities.

3. The unmanned intelligent all-in-one inspection machine for grain impurities according to claim 1 is characterized by: The impurity screening machine (402) comprises a sieve frame (431), a sieve body (430) is provided on the sieve frame (431), the sieve body (430) is movably connected to the sieve frame (431), a driving mechanism (434) is provided below the sieve frame (431), a movable end of the driving mechanism (434) is hingedly connected to the sieve body (430), and the driving mechanism (434) is used to drive the sieve body (430) to shake; The sieve body (430) comprises a large miscellaneous sieve (432), a small miscellaneous sieve (433) and a sieve shell (440); the large miscellaneous sieve (432) and the small miscellaneous sieve (433) are respectively plug-connected and movably connected to the sieve shell (440); the large miscellaneous sieve (432) is arranged above the small miscellaneous sieve (433); one end of the sieve shell (440) is hingedly connected to a driving mechanism (434), and the sieve shell (440) is slidably connected to the sieve frame (431).

4. The unmanned intelligent integrated inspection machine for grain impurities according to claim 3 is characterized by: The driving mechanism (434) comprises 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 provided 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 shell (440); the other end of the connecting rod (445) is hingedly connected to an ear plate (446); the ear plate (446) is provided below the sieve shell (440); and one end of the sieve shell (440) is fixedly connected to the ear plate (446).

5. The unmanned intelligent all-in-one inspection machine for grain impurities according to claim 4 is characterized by: A bracket (436) is provided below the sieve frame (431), the sieve body (430) is hingedly connected to the bracket (436), and a lifting mechanism (442) is provided below the sieve body (430) at one end opposite to the bracket (436), the lifting mechanism (442) being used to lift one end of the sieve body (430).

6. The unmanned intelligent all-in-one inspection machine for grain impurities according to claim 1, characterized in that: The impurity air separator (409) includes an impurity discharger (407), an air separation impurity suction pipe (408) and an air separator housing (491). The air separator housing (491) is provided with a grain discharge port (494) and a grain discharge port (493). The grain discharge port (494) is connected to the grain discharge port (493). An air inlet (492) is provided between the grain discharge port (494) and the grain discharge port (493). An air outlet (495) is provided above the air separator housing (491). The air outlet (495) is connected to the air separation impurity suction pipe (408). The air outlet (495) is provided directly above the grain discharge port (493). A baffle (496) is provided at the air inlet (492), and the baffle (496) is inclined toward the grain discharge port (493).

7. The unmanned intelligent integrated inspection machine for grain impurities according to claim 6, characterized in that: The impurity air separator (409) is connected to the suction collection pipe (802), a suction electromagnetic valve is provided between the impurity discharger (407) and the suction collection pipe (802), and the outlet of the impurity discharger (407) is connected to the impurity metering scale (415).

8. The unmanned intelligent all-in-one inspection machine for grain impurities according to claim 1 is characterized by: The side-by-side impurity separator (403) comprises: A vibrating feeder (501) for conveying grain particles; The material receiver (506) is arranged below the vibrating feeder (501), and the material receiver (506) is provided with two outlets, which are respectively connected to the side-by-side impurity weighing scale (404) and the grain weighing scale (405), and are used for separating the side-by-side impurities and grains; A visual camera assembly is provided between the vibrating feeder (501) and the material receiver (506); A nozzle (505) is provided at the inlet of the material receiver (506), wherein the nozzle (505) includes an air source pipeline and a solenoid valve, and the solenoid valve is electrically connected to the visual camera assembly. When the visual camera assembly captures the side-by-side grains, the nozzle (505) activates the solenoid valve to open, thereby separating the side-by-side impurities. The photoelectric sensor (502) is arranged at the outlet of the vibrating feeder (501) and is electrically connected to the camera assembly, and is used to activate the camera assembly to perform visual recognition of the grains.

9. The unmanned intelligent all-in-one grain impurity inspection machine according to claim 8, characterized in that: The visual camera assembly includes a camera (504) and a material light (503), wherein the material light (503) is in two groups and is respectively arranged on both sides of the camera (504); the camera (504) is in one group, the grain drop path at the outlet of the vibrating feeder (501) is a vertical line segment, the camera (504) is located in any vertical plane where the vertical line segment is located, and the camera (504) is located in the vertical plane, with the straight line where the vertical line segment is located as the Y axis, and the axis passing through the camera (504) as the X axis, and the angle between the X axis and the Y axis is in the range of 20 degrees to 70 degrees.

10. The unmanned intelligent all-in-one inspection machine for grain impurities according to claim 9, characterized in that: The cameras (504) are in two groups, and the two groups of cameras (504) are respectively arranged on both sides of the vertical line segment, with the straight line where the vertical line segment is located as the Y axis, the two groups of cameras (504) are collinear, and the axis passing through the cameras (504) is the X axis, and the angle between the X axis and the Y axis ranges from 10 degrees to 80 degrees.

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