Grain side-by-side impurity detection device

Abstract

The utility model discloses a grain side-by-side impurity detection device, and belongs to the technical field of grain detection. A grain separator, a vibration conveyor, a visual camera assembly, a separator and two collection weighing devices are sequentially arranged on the machine frame from top to bottom, the grain separator unloads grains to the vibration conveyor one by one, the vibration conveyor conveys the grains, the grains are detected by the visual camera assembly and then fall into the separator, and the separator comprises a separation body and a separation plate. An inlet is formed in the upper side of the separation body, two outlets are formed in the lower side of the separation body side by side, the separation plate is rotationally arranged in the separation body, the inlet and the two outlets are communicated through the separation plate to form two channels, the two collection weighing devices are arranged on the lower sides of the two outlets, and a through hole is formed in the separation plate. Grain and impurities recognized by the visual camera assembly can enter the collecting and weighing device through different channels in the separator regardless of the size and shape of the impurities, and compared with a nozzle type gas separation mode, the detection precision is higher.

Description

Technical Field

[0001] A detection device for impurities in grains belongs to the field of grain detection technology. Background Technology

[0002] With societal development, grain detection devices are becoming increasingly automated, significantly reducing manpower and material costs and improving detection accuracy. However, existing technologies still have certain shortcomings. For example, as described in patent CN223209966U, the method for separating impurities from grains involves first identifying them using a vision camera component, then blowing the impurities away from the grains through a nozzle. The grains fall vertically into a grain weighing container, while the impurities, deviating from their original trajectory by the gas ejected from the nozzle, fall into an impurity weighing container located next to the grain weighing container. However, since impurities vary in size, weight, and shape, the method of separating them using gas ejected from a uniform nozzle has limitations. Heavier and larger impurities can easily enter the grain weighing container, thus affecting the measurement results. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a detection device for grain and impurities. The separator of the device is equipped with a rotating separation plate, and two channels are formed by the swing separation plate, so that the identified grain and impurities fall into different weighing containers through different channels.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: The grain impurity detection device includes a frame, on which a grain separator, a vibrating conveyor, a vision camera assembly, a separator, and two collecting weighing devices are arranged sequentially from top to bottom. The grain separator unloads the grain one by one onto the vibrating conveyor. The vibrating conveyor transports the grain through the vision camera assembly and then it falls into the separator. The separator includes a separation body and a partition plate. The upper side of the separation body is provided with an inlet, and the lower side is provided with two outlets side by side. The partition plate is rotatably installed in the separation body and connects the inlet and the two outlets to form two channels. The two collecting weighing devices are located below the two outlets. The partition plate has through holes.

[0005] Preferably, the width of the isolation plate gradually decreases, with the narrower end positioned closer to the inlet of the separation body and the wider end positioned closer to the outlet of the separation body.

[0006] Preferably, the isolation plate is provided with multiple through holes at intervals, and the diameter of the through holes gradually decreases from the wide end to the narrow end of the isolation plate.

[0007] Preferably, the separating body is funnel-shaped, with the width at the upper end being smaller than the width at the lower end. The upper end of the separating body extends upward to form an inlet, which is located below the outlet of the vibrating conveyor and spaced apart from the outlet of the vibrating conveyor.

[0008] Preferably, the grain separator includes a discharge body, a turntable, and a brush. The discharge body is vertically continuous. The turntable rotates and is eccentrically positioned within the discharge body. Two placement slots are symmetrically arranged around the circumference of the turntable. The brush is inclinedly positioned on the inner wall of the discharge body and is located at the interval between the turntable and the inner wall of the discharge body. The end of the brush contacts the turntable.

[0009] Preferably, the length of the end of the brush that contacts the turntable is less than the depth of the placement groove.

[0010] Preferably, the perspective camera assembly has four sets of cameras, which are arranged in pairs facing each other. The lines connecting the pairs of cameras are the first connecting line and the second connecting line, which are perpendicular to each other. The first connecting line is horizontal, and the angle between the second connecting line and the horizontal plane is 20° to 70°.

[0011] Preferably, the vibrating conveyor includes a vibrating motor and a track, with the track horizontally positioned below the grain separator, and the vibrating motor connected to the track.

[0012] Preferably, the collecting weighing device includes a weighing sensor, a collecting trough, and a collecting motor. The collecting trough is a blind trough with its opening facing upwards and located below the outlet of the separator. One end of the weighing sensor is fixed to the frame, and the other end is cantilevered to the collecting trough. The output end of the collecting motor is connected to the collecting trough.

[0013] Compared with existing technologies, the beneficial effects of this technical solution are:

[0014] The vibrating conveyor of this invention transports grains falling one by one from the crusher to the separator. Before entering the separator, each grain is detected by a vision camera assembly. The separator is equipped with a rotating baffle plate, which forms two channels with the separator body. The grains and impurities identified by the vision camera assembly enter different collection and weighing devices through different channels. Regardless of the size or shape of the impurities, as long as an impurity is detected, the baffle plate rotates in a controlled manner. Compared with the nozzle-type gas separation method, the detection accuracy is higher. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a grain impurity detection device according to the present invention.

[0016] Figure 2 This is a cross-sectional view of the crusher unloader and vibrating conveyor of this utility model.

[0017] Figure 3 This is a cross-sectional view of the separator and the collecting weighing device of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the weighing device of this utility model.

[0019] Among them: 1. Frame 101, support frame 102, support plate 103, first fixed plate 104, second fixed plate 105, support base 2. Grain separator 201, unloading body 202, turntable 203, sweeping brush 204, placement trough 205, unloading motor 3. Vibrating conveyor 301, track 302, vibrating motor 4. Separator 401, separating body 402, isolation plate 403, isolation motor 5. Vision camera assembly 501, first camera 502, second camera 503, third camera 504, fourth camera 6. Collection weighing device 601, collection trough 602, weighing sensor 603, collection motor 7. First channel 8. Second channel. Detailed Implementation

[0020] Figures 1-4 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-4 The present invention will be further described below.

[0021] Reference Figure 1 The grain impurity detection device includes a frame 1, on which, from top to bottom, are arranged a grain separator 2, a vibrating conveyor 3, a vision camera assembly 5, a separator 4, and a collection weighing device 6. Grains in the grain separator 2 fall one by one onto the vibrating conveyor 3, which sorts the grains and conveys them vertically downwards. After being identified by the vision camera assembly 5, the falling grains are separated by the separator 4. The grains enter one collection weighing device 6 for weighing, while impurities enter another collection weighing device 6 for weighing, thus completing the impurity detection.

[0022] Specifically, the frame 1 consists of a support frame 101, a support plate 102, and support seats 105. The support frame 101 extends horizontally from the middle to form the support plate 102, and two support seats 105 are located on the lower side of the support plate 102. The grain separator 2 and the vibrating conveyor 3 are located on the support frame 101 on the upper side of the support plate 102, the separator 4 is located on the support plate 102, and the collecting weighing device 6 is located on the support seat 105.

[0023] The vision camera assembly 5 of this utility model is equipped with four sets of cameras, consisting of a first camera 501, a second camera 502, a third camera 503, and a fourth camera 504. Each camera has an LED light at its front end. The four sets of cameras are mounted on the upper side of the support plate 102 and are positioned between the vibrating conveyor 3 and the separator 4.

[0024] The four sets of cameras are symmetrically arranged in pairs. The first camera 501, which is closest to the support frame 101, is set at the lowest height, while the third camera 503 is set at the highest height. The first camera 501 and the third camera 503 are tilted so that their lenses face each other. The line connecting the two cameras is the second line. The second camera 502 and the fourth camera 504 are both set horizontally at the same height, between the heights of the first camera 501 and the third camera 503. The lenses of the second camera 502 and the fourth camera 504 are also set facing each other. The line connecting the two cameras is the first line. The first line and the second line are perpendicular to each other. The first line is set horizontally, and the second line makes an angle of 45° with the horizontal plane. The positioning of these four sets of cameras allows for comprehensive imaging and identification of the grain as it falls, preventing incomplete identification due to the cameras not being able to capture the bottom of the grain.

[0025] Reference Figure 2 The vibrating conveyor 3 includes a vibrating motor 302 and a track 301. The upper end of the support frame 101 is provided with a first horizontal fixing plate 103 and a second fixing plate 104. The second fixing plate 104 is mounted on the upper side of the first fixing plate 103 by four columns and is spaced apart from the first fixing plate 103. The vibrating motor 302 is located on the upper side of the first fixing plate 103 and is connected to the end of the track 301, which is horizontally located on the upper side of the vibrating motor 302. The track 301 is cantilevered, and its cantilever end extends toward the inlet of the separator 4.

[0026] The grain separator 2 is located at the upper end of the second fixed plate 104. The grain separator 2 of this utility model includes a discharge body 201, a turntable 202 and a brush 203. The discharge body 201 is a rectangular body with its interior running vertically through it. The turntable 202 rotates and is eccentrically located in the inner cavity of the discharge body 201. The circular turntable 202 is vertically arranged and parallel to the long side of the discharge body 201. The discharge motor 205 is located on the second fixed plate 104. Its output shaft passes through the side of the discharge body 201 and is connected to the turntable 202, driving the turntable 202 to rotate in the inner cavity of the discharge body 201.

[0027] One side of the turntable 202 is spaced apart from the inner wall of the unloading body 201, while the gap between the other side of the turntable 202 and the inner wall of the unloading body 201 is smaller than the size of the grain. A brush 203 is obliquely mounted on the inner wall of the unloading body 201, positioned at a significant distance between the turntable 202 and the inner wall of the unloading body 201. A groove is provided on the inner wall of the unloading body 201; one end of the brush 203 is fixed within this groove, and the other end has a flexible brush head that contacts the circumferential surface of the turntable 202. When the unloading motor 205 drives the turntable 202 to rotate, the brush head sweeps along the circumferential surface of the turntable 202.

[0028] Two symmetrical semi-circular placement grooves 204 are formed by recessing the circumference of the turntable 202 towards the center. The length of the contact between the sweeping head and the turntable 202 is less than the depth of the placement groove 204. Grains fall from the inlet of the unloading body 201 onto the turntable 202. One grain falls into the upper placement groove 204. The remaining grains are placed on the circumference of the turntable 202 by the sweeping of the sweeping head. The turntable 202 rotates, and the grains in the placement groove 204 fall down from the outlet of the unloading body 201. The upper end of the second fixing plate 104 is provided with a through hole that communicates with the outlet of the unloading body 201. The grains fall onto the vibrating conveyor 3.

[0029] Reference Figure 3 The vibrating conveyor 3 conveys grains that are detected by the vision camera assembly 5 and then input into the separator 4. The separator 4 is also a cavity that runs vertically through the interior. It has an inlet at the top and two outlets side by side at the bottom. The support plate 102 has through holes that connect to the two outlets. Two collection weighing devices 6 are respectively set for the two outlets.

[0030] The separator 4 of this utility model includes a separator body 401, a partition plate 402, and a partition motor 403. The upper part of the separator body 401 is an inverted triangle, that is, the width of the upper end is smaller than the width of the lower end, and the lower end is rectangular, forming a funnel-shaped tank. The upper end of the funnel extends upward to form an inlet, which is located below the outlet of the vibrating conveyor 3. The partition plate 402 is rotatably disposed inside the separator body 401 and connects the inlet to the two outlets to form a first channel 7 and a second channel 8. Intact grains identified by the vision camera assembly 5 enter the lower collecting and weighing device 6 through the first channel 7, while impurities and broken grains enter the lower collecting and weighing device 6 through the second channel 8.

[0031] An isolation motor 403 is mounted on a support plate 102. Its output end passes through the side plate of the separator 401 and connects to the isolation plate 402. The width of the isolation plate 402 gradually decreases, with the narrower end positioned closer to the inlet and the wider end positioned closer to the outlet. The distance between the narrower end of the isolation plate 402 and the lower end of the inlet of the separator 401 is less than the size of the grain. The isolation motor 403 drives the isolation plate 402 to rotate between the two lower ends of the inlet, forming the first channel 7 and the second channel 8 with the two outlets, respectively.

[0032] The separator 402 can be made of plastic or other elastic materials. It has multiple through holes spaced apart, reducing its weight while increasing its flexibility. The diameter of the through holes gradually decreases from the widest end to the narrowest end. When grain falling into the separator 4 touches the separator 402, the perforated structure prevents the grain from breaking. The output end of the isolation motor 403 is connected to the through hole with the largest diameter, driving the separator 402 to rotate.

[0033] Reference Figure 4 The two collecting weighing devices 6 have the same structure, including a weighing sensor 602, a collecting trough 601, and a collecting motor 603. The collecting trough 601 is a blind-opening trough with its opening facing upwards. The width of the upper opening is greater than the width of the lower opening, which facilitates the collection of grains. The support base 105 consists of two vertical plates and a mounting plate disposed on the upper side of the two plates. The weighing sensor 602 and the collecting motor 603 are respectively disposed on the upper and lower sides of the mounting plate. One end of the weighing sensor 602 is fixed to the mounting plate, and the other end is cantilevered to the collecting trough 601. The output end of the collecting motor 603 passes between the two vertical plates and is connected to the collecting trough 601, driving the collecting trough 601 to move horizontally.

[0034] It also includes a control system. This utility model is equipped with multiple photoelectric sensors. The photoelectric sensors are set at the outlet section of the vibrating conveyor 3. When the vibrating conveyor 3 detects that there is grain falling, the photoelectric sensors transmit the signal to the control system. The control system activates the vision camera assembly 5 to visually identify the grain. When impurities or broken grains are identified, the control system transmits the signal to the isolation motor 403. The isolation motor 403 drives the isolation plate 402 to rotate.

[0035] Work process:

[0036] Grains fall from the inlet of the unloading body 201 onto the turntable 202. One grain falls into the upper placement slot 204. The remaining grains are swept by the broom head and placed on the circumference of the turntable 202. The unloading motor 205 drives the turntable 202 to rotate, turning the upper placement slot 204 to the lower side. The grains in the placement slot 204 fall one by one from the outlet of the unloading body 201 onto the track 301. The vibration motor 302 drives the track 301 to vibrate, causing the grains arranged in a row to fall one by one.

[0037] When grains are detected falling, the four cameras of the vision camera assembly take pictures and identify whether the grains are intact. When intact grains are detected, the isolation motor 403 does not work, and the intact grains enter the separator 4 and fall from the first channel 7 into the collecting weighing device 6.

[0038] When damage or impurities are detected, the isolation motor 403 drives the isolation plate 402 to rotate to the opposite side of the lower end of the separator 4 inlet, forming a second channel 8 with another outlet, so that the impurities and damaged grains enter another collecting weighing device 6.

[0039] Once all grains have been inspected, the weighing sensor 602 weighs the intact grains and the impurities respectively, and transmits the data to the control system. The control system then sends a signal to the collecting motor 603, which drives the collecting tank 601 to move away from the separator 4, making it easier to remove the grains and impurities.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its scope of protection shall still fall within the protection scope of this utility model.

Claims

1. A device for detecting side-by-side impurities of cereal, comprising a frame (1), characterized in that: The frame (1) is provided with a grain separator (2), a vibrating conveyor (3), a vision camera assembly (5), a separator (4), and two collection weighing devices (6) from top to bottom. The grain separator (2) unloads the grain one by one onto the vibrating conveyor (3). The vibrating conveyor (3) transports the grain through the vision camera assembly (5) and then it falls into the separator (4). The separator (4) includes a separator body (401) and a partition plate (402). The separator body (401) has an inlet on the upper side and two outlets side by side on the lower side. The partition plate (402) is rotatably installed inside the separator body (401) and connects the inlet and the two outlets to form two channels. The two collection weighing devices (6) are respectively installed on the lower side of the two outlets. The partition plate has through holes.

2. The apparatus for detecting a grain and a foreign matter in parallel according to claim 1, characterized by: The width of the isolation plate (402) gradually decreases, with the narrower end closer to the inlet of the separation body (401) and the wider end closer to the outlet of the separation body (401).

3. The apparatus for detecting a grain and a foreign matter in parallel according to claim 2, characterized in that: The isolation plate (402) is provided with multiple through holes at intervals, and the diameter of the through holes gradually decreases from the wide end to the narrow end of the isolation plate (402).

4. The apparatus for detecting a grain and a foreign matter in parallel according to claim 1, characterized in that: The separating body (401) is funnel-shaped, and the width of the upper end is smaller than the width of the lower end. The upper end of the separating body (401) extends upward to form an inlet. The inlet is located below the outlet of the vibrating conveyor (3) and is spaced apart from the outlet of the vibrating conveyor (3).

5. The apparatus for detecting a grain and a foreign matter in parallel according to claim 1, characterized in that: The grain separator (2) includes a discharge body (201), a turntable (202) and a brush (203). The discharge body (201) is vertically connected. The turntable (202) rotates and is eccentrically positioned inside the discharge body (201). Two placement slots (204) are symmetrically provided on the circumference of the turntable (202). The brush (203) is inclinedly positioned on the inner wall of the discharge body (201) and positioned at the interval between the turntable (202) and the inner wall of the discharge body (201). The end of the brush (203) contacts the turntable (202).

6. The apparatus for detecting a grain and a foreign matter in parallel according to claim 5, characterized by: The length of the end of the brush (203) that contacts the turntable (202) is less than the depth of the placement groove (204).

7. The apparatus for detecting a foreign substance in a cereal according to claim 1, wherein: The visual camera assembly (5) is provided with four sets of cameras, which are set in pairs opposite each other. The connecting lines between the pairs of opposite cameras are the first connecting line and the second connecting line. The first connecting line and the second connecting line are perpendicular to each other. The first connecting line is set horizontally, and the angle between the second connecting line and the horizontal plane is 20°~70°.

8. The apparatus for detecting a foreign substance in a cereal according to claim 1, wherein: The vibrating conveyor (3) includes a vibrating motor (302) and a track (301). The track (301) is horizontally arranged on the lower side of the grain separator (2), and the vibrating motor (302) is connected to the track (301).

9. The apparatus for detecting a grain impurity according to claim 1, wherein: The collecting weighing device (6) includes a weighing sensor (602), a collecting trough (601) and a collecting motor (603). The collecting trough (601) is a blind trough with its opening facing upwards and located below the outlet of the separator (4). One end of the weighing sensor (602) is fixed on the frame (1), and the other end is cantilevered to the collecting trough (601). The output end of the collecting motor (603) is connected to the collecting trough (601).

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