A multi-stage detection device for metal foreign matters in feed additives

Abstract

The utility model provides a kind of feed additive metal foreign matter multistage detection device, including rack, and be provided with feeding mechanism, level material mechanism and detection mechanism on rack, and feeding mechanism is used to transport feed additive;Level material mechanism includes level material belt, two level material rollers and driving part;Two level material rollers are respectively along transverse rotation to set on rack;Level material belt is set to two level material rollers outside, and is placed in the above of feeding mechanism.Utilize level material belt that feeding mechanism import is provided, and level material belt rotation setting, the material that enters the import of feeding mechanism is flattened, and the larger metal foreign matter that enters therein is preliminarily screened, and is blocked in import outside, so that it does not enter into feeding mechanism.Level material belt forms stable flat conveying, avoids feed stacking, solves the problem that feed additive is prone to stacking in conveying process, reaches the effect that feed additive is flatly conveyed, provides stable material state for subsequent detection.

Description

Technical Field

[0001] This utility model relates to the technical field of additive detection, and in particular to a multi-stage detection device for metallic foreign matter in feed additives. Background Technology

[0002] The multi-stage detection device for metallic foreign objects in feed additives is a key piece of equipment for ensuring feed quality and safety, and is widely used in feed production, processing, and quality testing. By integrating multiple detection technologies, this device can accurately identify and remove metallic foreign objects such as iron, copper, and aluminum from feed additives, preventing them from harming the health of farmed animals and also preventing them from damaging subsequent processing equipment.

[0003] Existing feed additive metal foreign object detection devices typically employ electromagnetic induction or X-ray detection technology. Their mechanical structure mainly includes a conveyor belt system, a detection probe, and a rejection mechanism. The conveyor belt system is responsible for uniformly transporting the feed additive to the detection area. The detection probe identifies metal foreign objects through changes in the electromagnetic field or X-ray imaging. The rejection mechanism separates the material containing foreign objects based on the detection results. Some devices also incorporate screens or vibrators along the conveying path to reduce interference from material accumulation during detection.

[0004] However, traditional detection devices are prone to the problem of feed additives piling up during the conveying process. Due to the diverse forms of feed additives (such as powder, granules, and lumps), uneven material distribution or unstable conveying speed during belt transport can easily lead to piling up or clumping. This piling not only results in inconsistent material thickness and obscures internal metallic foreign objects, making it difficult for the detection probe to accurately identify them, but also affects the quality and safety of the feed products. Utility Model Content

[0005] In view of the above problems, this utility model is proposed to provide a multi-level detection device for metal foreign objects in feed additives that overcomes or at least partially solves the above problems, and can solve the problem of feed additives easily stacking during transportation.

[0006] Specifically, this utility model provides a multi-stage detection device for metal foreign objects in feed additives, including a frame, on which a feeding mechanism, a leveling mechanism and a detection mechanism are provided. The feeding mechanism is used to transport feed additives, the leveling mechanism is located at the front inlet of the feeding mechanism, and the detection mechanism is located at the rear outlet of the feeding mechanism and is used to detect metal foreign objects.

[0007] The leveling mechanism includes a leveling belt, two leveling rollers, and a drive component;

[0008] The two flat rollers are respectively rotatably mounted on the frame in the transverse direction and spaced apart in the longitudinal direction;

[0009] The flat material belt is sleeved around the two flat material rollers and positioned above the feeding mechanism;

[0010] The drive unit is mounted on the frame and is used to drive one of the flat rollers to rotate.

[0011] Optionally, the leveling mechanism further includes: a translation plate, two connecting plates, and a pushing component;

[0012] A translation plate is slidably mounted vertically on the frame, and both flat rollers are rotatably connected to the lower side of the translation plate;

[0013] Two connecting plates are respectively installed on the left and right sides of the translation plate. The rotating shaft of each flat material roller is inserted into the connecting plates on both sides. The driving component is installed on one of the connecting plates, and its output end is connected to the shaft end of one of the flat material rollers on the corresponding connecting plate.

[0014] A pusher, mounted on the frame, is configured to push the translation plate to move along the vertical direction of the frame.

[0015] Optionally, sprockets are mounted on the shaft ends of both of the flat rollers that pass through the other translation plate, and a chain is provided between the two sprockets.

[0016] Optionally, it may also include: a correction mechanism;

[0017] The correction mechanism is mounted on the frame and positioned between the leveling mechanism and the detection mechanism. The correction mechanism includes two symmetrically arranged correction components.

[0018] The correction assembly includes a correction plate, a connecting arm, and a mounting block;

[0019] The mounting block is fixedly installed on the frame;

[0020] The connecting arm is disposed on the mounting block and extends toward the feeding mechanism;

[0021] The correction plate is inclinedly disposed above the feeding mechanism and connected to the extension end of the connecting arm facing the feeding mechanism; the two correction plates are arranged in a figure-eight shape and gradually narrow along the conveying direction of the feeding mechanism.

[0022] Optionally, the connecting arm is slidably mounted on the upper side of the mounting block in a lateral direction, and the correction assembly further includes: a fixed cylinder, a telescopic column, and a return spring;

[0023] The fixed cylinder extends laterally and is disposed on the mounting block, with its opening facing the side of the feeding mechanism;

[0024] The telescopic column is slidably installed inside the fixed cylinder, and one end of the telescopic column extending out of the fixed cylinder abuts against the back of the correction plate;

[0025] The reset spring is arranged laterally, with one end connected to the bottom surface of the fixed cylinder and the other end connected to one end of the connecting column.

[0026] Optionally, the upper end of the correction plate is fixedly connected to a rotating column, the upper end of the rotating column is rotatably connected to the lower end of the connecting arm, and the rotating shaft is arranged vertically. The correction assembly also includes: an ear plate, a threaded pin, and a slider.

[0027] The ear plate is fixedly installed on one side of the frame and placed in front of the mounting block;

[0028] The threaded pin extends laterally and engages with the threaded ear plate.

[0029] The slider ball is hinged to the end of the threaded pin facing the feeding mechanism, and a groove is provided on the back of the correction plate along its length, and the slider is slidably installed in the groove.

[0030] Optionally, a receiving groove is formed at the upper end of the mounting block, the receiving groove extends in the lateral direction, and a limiting rod is installed in the receiving groove, the limiting rod extending in the lateral direction;

[0031] The connecting arm has two first rods and one second rod. The two first rods extend vertically and are spaced apart laterally. The second rod extends laterally, and the upper ends of the two first rods are respectively installed at the left and right ends of the second rod.

[0032] One of the first rods is laterally slidably installed in the receiving groove, and the limiting rod slides through the lower end of the first rod; the lower end of the other first rod is rotatably connected to the rotating column.

[0033] Optionally, a longitudinally penetrating rectangular slot is provided at the upper end of the frame, and the feeding mechanism includes: a conveyor belt, a drive motor, and multiple rotating rollers;

[0034] The rotating shafts of the plurality of rotating rollers extend laterally and are rotatably mounted in the rectangular groove, and the plurality of rotating rollers are spaced apart longitudinally.

[0035] The conveyor belt is sleeved on the outside of the plurality of rotating rollers;

[0036] The drive motor is mounted on the frame and configured to drive the rotating rollers on the front or rear sides to rotate.

[0037] Optionally, the lower end of the correction plate is intermittently engaged with the upper end surface of the conveyor belt.

[0038] Optionally, the testing mechanism includes a testing frame and a metal detector;

[0039] The testing frame is fixedly installed on the machine frame;

[0040] The metal detector is installed on the lower side of the detection frame and is used to detect feed additives passing beneath it.

[0041] This invention relates to a multi-stage detection device for metal foreign objects in feed additives. A flat conveyor belt at the inlet of the feeding mechanism rotates to level the material entering the inlet and to preliminarily screen larger metal foreign objects, preventing them from entering the feeding mechanism. This flat conveyor belt ensures stable and level transport, avoiding feed stacking and solving the problem of feed additives piling up during transport. It achieves the effect of level transport of feed additives, providing a stable material state for subsequent testing.

[0042] Furthermore, in the multi-stage detection device for metal foreign objects in feed additives of this utility model, the distance between the flat material belt and the feeding mechanism below is adjusted for different feed additives, thereby adapting to the transport thickness of different feed additives on the feeding mechanism, ensuring the accuracy of subsequent detection, and having strong adaptability.

[0043] Furthermore, in the multi-stage detection device for metal foreign objects in feed additives of this invention, if the feed additive deviates during the conveying process when the material is transported to the position of the correction mechanism, the correction plates on both sides will push the feed additive towards the center of the feeding mechanism. This invention can push the deviated material back to the center of the feeding mechanism during the feed conveying process, thus ensuring that the material is always within the effective detection range of the detection mechanism, guaranteeing the comprehensiveness and accuracy of the detection.

[0044] Furthermore, in this multi-stage detection device for metallic foreign objects in feed additives, the rotation of the threaded pin drives the end-spherically hinged slider to move laterally. During this lateral movement, the slider moves relative to the groove, causing the correction plate to rotate around the rotation point of the rotating column, thereby adjusting the tilt angle. The adjusted tilt angle of the correction plate is reliable and will not easily rotate. Using this structure, the tilt angles of different tilt plates can be adjusted at any time, thereby adjusting the shortest distance between the two correction plates, thus adapting to different feed additives and different detection mechanisms, improving the adaptability of this device.

[0045] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0046] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0047] Figure 1 This is a schematic three-dimensional structural diagram of a multi-stage detection device for metal foreign objects in feed additives, based on the present invention. (View 1)

[0048] Figure 2 This is a schematic three-dimensional structural diagram, perspective two, of a multi-stage detection device for metal foreign objects in feed additives according to this utility model;

[0049] Figure 3 This is a schematic three-dimensional structural diagram of the frame of a multi-stage detection device for metal foreign objects in feed additives and its connected feeding mechanism and detection mechanism according to the present invention.

[0050] Figure 4 This is a partial schematic three-dimensional structural diagram of the leveling mechanism in a multi-stage detection device for metal foreign objects in feed additives according to the present invention;

[0051] Figure 5 This is a schematic cross-sectional structural diagram of the correction component in a multi-stage detection device for metal foreign objects in a feed additive according to the present invention. Detailed Implementation

[0052] The following reference Figures 1 to 5 This invention describes a multi-stage detection device for metallic foreign objects in feed additives according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0053] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] Figure 1 This is a three-dimensional schematic structural diagram according to an embodiment of the present utility model, such as... Figure 1 As shown, and with reference Figures 2 to 5 This utility model embodiment provides a multi-stage detection device for metallic foreign objects in feed additives, including a frame 1. The frame 1 provides support for the entire device.

[0057] The frame 1 is equipped with a feeding mechanism 2, a leveling mechanism 3, and a detection mechanism 4. The feeding mechanism 2 is used to convey feed additives. The leveling mechanism 3 is located at the front inlet of the feeding mechanism 2. The leveling mechanism 3 can level the material on the feeding mechanism 2, ensuring its thickness is not excessive.

[0058] The detection mechanism 4 is located at the rear outlet of the feeding mechanism 2 and is used to detect metallic foreign objects. In other words, the detection mechanism 4 can detect metallic foreign objects in the conveyed material.

[0059] The leveling mechanism 3 includes a leveling belt 5, two leveling rollers 6, and a drive component 7. The two leveling rollers 6 are respectively rotatably mounted on the frame 1 in the transverse direction and are spaced apart in the longitudinal direction. Specifically, the rotatable connection between the two leveling rollers 6 and the frame 1 can be achieved through bearing seats, that is, the bearing seats are fixed on the left and right sides of the frame 1, and the leveling rollers 6 are installed in the bearing seats, thereby realizing the rotatable connection.

[0060] The flat material belt 5 is fitted around the two flat material rollers 6 and positioned above the feeding mechanism 2. Specifically, the flat material belt 5 rotates along with the two flat material rollers 6, in the opposite direction to the transport direction of the feeding mechanism 2. That is, as the feeding mechanism 2 conveys material backward, the flat material belt 5 rotates in the opposite direction, leveling the material entering between the flat material belt 5 and the feeding mechanism 2. This ensures that the thickness of the feed additive delivered from the outlet of the feeding mechanism 2 to the detection mechanism 4 remains consistent and not too thick. The flat material belt 5 also pushes the material entering between it and the feeding mechanism 2 backward, maintaining its thickness at the distance between the lower side of the flat material belt 5 and the upper side of the feeding mechanism 2. This also allows for the preliminary screening of large metal foreign objects.

[0061] A drive unit 7 is mounted on the frame 1 and is used to drive one of the flat material rollers 6 to rotate. Specifically, the drive unit 7 is mounted on the frame 1, and is preferably a servo motor. The output shaft of the servo motor is coaxially mounted with the rotating shaft of one of the flat material rollers 6, so that it drives one of the flat material rollers 6 to rotate, thereby driving the flat material belt 5 to rotate. In particular, the servo motor is located on the flat material roller 6 near the inlet of the feeding mechanism 2, so that the flat material roller 6 connected to it becomes the active roller, and this active roller is a pull roller to ensure the efficiency of the pull conveying.

[0062] In this embodiment, the multi-stage detection device for metal foreign objects in feed additives is used by activating the feeding mechanism 2 to transport the feed additives. Simultaneously, the drive unit 7 is activated, driving the leveling roller 6 to rotate, which in turn drives the leveling belt 5 to rotate in the opposite direction to the feeding mechanism 2. The material entering between the leveling belt 5 and the feeding mechanism 2 is leveled. Excessively tall material and larger metal foreign objects are carried out of the inlet by the leveling belt 5, isolating larger metal foreign objects at the inlet, while simultaneously leveling excessively tall material. This ensures that the thickness of the feed additive delivered from the outlet of the feeding mechanism 2 to the detection mechanism 4 remains consistent and not excessively thick. The device also provides a certain degree of pressure conveying for the material entering between the leveling belt 5 and the feeding mechanism 2, ensuring smooth transport.

[0063] In this embodiment of the invention, a flat conveyor belt 5 is installed at the inlet of the feeding mechanism 2. The flat conveyor belt 5 rotates to flatten the material entering the inlet of the feeding mechanism 2 and to preliminarily screen any larger metal foreign objects entering it, blocking them outside the inlet and preventing them from entering the feeding mechanism 2. In this embodiment, the flat conveyor belt 5 provides stable and flat conveying, avoiding feed stacking and solving the problem of feed additives easily stacking during transport. This achieves the effect of flat conveying of feed additives, providing a stable material state for subsequent testing.

[0064] In some embodiments of this utility model, such as Figure 1 , 4 As shown, the leveling mechanism 3 also includes: a translation plate 8, two connecting plates 9 and a pushing component 10.

[0065] The translation plate 8 is slidably mounted on the frame 1 in a vertical direction, and the two flat rollers 6 are rotatably connected to the lower side of the translation plate 8. Specifically, the translation plate 8 can only move in the vertical direction of the frame 1. Each flat roller 6 has bearing seats connected to both ends, and the bearing seats are fastened to the lower side of the translation plate 8 with bolts, so that the flat roller 6 can rotate relative to the translation plate 8.

[0066] Two connecting plates 9 are respectively installed on the left and right sides of the translation plate 8. The rotating shaft of each flat roller 6 is inserted into the connecting plates 9 on both sides. The driving component 7 is installed on one of the connecting plates 9, and its output end is connected to the shaft end of one of the flat rollers 6 on the connecting plate 9. Specifically, the connecting plates 9 serve as connecting supports. The connecting plates 9 fit against the outer side of the corresponding side frame 1, making the vertical relative movement of the translation plate 8 more stable, and at the same time providing a mounting base for subsequent components.

[0067] The pusher 10 is mounted on the frame 1 and configured to push the translation plate 8 to move vertically along the frame 1. Specifically, the pusher 10 drives the translation plate 8 to move vertically, thereby changing the distance between the flat material belt 5 and the feeding mechanism 2 below, thus adjusting the thickness of the feed additive on the feeding mechanism 2 to accommodate different feed additives.

[0068] In this embodiment, the multi-stage detection device for metal foreign objects in feed additives is used by activating the pusher 10, which causes the translation plate 8 to move vertically, thereby changing the distance between the flat material belt 5 and the feeding mechanism 2 below, and thus adjusting the thickness of the feed additive on the feeding mechanism 2. In this embodiment, the distance between the flat material belt 5 and the feeding mechanism 2 below is adjusted for different feed additives to adapt to the transport thickness of different feed additives on the feeding mechanism 2, ensuring the accuracy of subsequent detection and demonstrating strong adaptability.

[0069] In some embodiments of this utility model, such as Figure 1 , 2As shown, the pusher 10 is an electric push rod, and the free end of the lower end of the electric push rod is fixedly connected to the upper end of the translation plate 8. The translation plate 8 is moved by the electric push rod. In this embodiment, the pushing method of the electric push rod is stable, reliable, and highly automated.

[0070] In some embodiments of this utility model, such as Figure 1 , 2 As shown, the pusher 10 is a hydraulic push rod, which is connected to a hydraulic system. The hydraulic system drives the hydraulic push rod to move. The hydraulic system provides a more stable, precise, and smooth pushing mechanism.

[0071] In some embodiments of this utility model, such as Figure 1 , 4 As shown, two vertically arranged rectangular holes 34 are respectively provided on the left and right sides of the frame 1. The connecting plate 9 is connected to one side of the translation plate 8 by a sliding rod. The sliding rod is vertically slidable within the rectangular holes 34, realizing the vertical movement of the translation plate 8 relative to the frame 1. In this embodiment, the method of opening the rectangular holes 34 simplifies manufacturing and facilitates processing.

[0072] In some embodiments of this utility model, such as Figure 2 As shown, sprockets 11 are mounted on the shaft ends of the two flat rollers 6 passing through the other translation plate 8, and a chain 12 is arranged between the two sprockets 11. In this embodiment, the connection method of the chain 12 ensures that the two flat rollers 6 rotate synchronously, ensuring that the flat belt 5 is driven smoothly and reliably.

[0073] In some embodiments of this utility model, such as Figure 1 , 2 As shown in Figure 5, the multi-stage detection device for metal foreign objects in feed additives also includes a correction mechanism 13. The correction mechanism 13 is mounted on the frame 1 and positioned between the leveling mechanism 3 and the detection mechanism 4. The correction mechanism 13 includes two symmetrically arranged correction components 14. Specifically, the two correction components 14 cooperate to correct and center the feed additives on the feeding mechanism 2.

[0074] The web guiding assembly 14 includes a web guiding plate 15, a connecting arm 16, and a mounting block 17. The mounting block 17 is fixedly mounted on the frame 1. Specifically, the mounting block 17 of each web guiding assembly 14 is mounted on the left or right side of the frame 1.

[0075] The connecting arm 16 is mounted on the mounting block 17 and extends toward the feeding mechanism 2. Specifically, the connecting arm 16 serves as a connector.

[0076] The correction plates 15 are inclinedly positioned above the feeding mechanism 2 and connected to the extension end of the connecting arm 16 facing the feeding mechanism 2. The two correction plates 15 are arranged in a figure-eight shape and gradually narrow along the conveying direction of the feeding mechanism 2. Specifically, the two correction plates 15 gradually narrow along the conveying direction of the feeding mechanism 2, allowing the material being conveyed along the feeding mechanism 2 to be corrected towards the center under the action of the two correction plates 15, thus guiding it into the range of the subsequent detection mechanism 4. The distance between the two points at the narrowest point of the two correction plates 15 determines the width of the material entering the detection mechanism 4. Generally, since the conveying distance of the feeding mechanism 2 is not too far, the deviation during material transport will not be too large.

[0077] In this embodiment, the multi-stage detection device for metal foreign objects in feed additives, when in use, if the feed additive deviates during the conveying process when the material reaches the position of the correction mechanism 13, the correction plates 15 on both sides will push the feed additive towards the center of the feeding mechanism 2. This embodiment can push the deviated material back to the center of the feeding mechanism 2 during the feed conveying process, achieving the effect of keeping the material within the effective detection range of the detection mechanism 4, ensuring the comprehensiveness and accuracy of the detection.

[0078] In some embodiments of this utility model, such as Figure 5 As shown, the connecting arm 16 is slidably mounted on the upper side of the mounting block 17 in a transverse direction. The correction assembly 14 also includes: a fixed cylinder 18, a telescopic column 19 and a return spring 20.

[0079] The fixed cylinder 18 extends laterally and is mounted on the mounting block 17, with its opening facing the side of the feeding mechanism 2.

[0080] The telescopic column 19 is slidably installed inside the fixed cylinder 18, with one end of the telescopic column 19 extending out of the fixed cylinder 18 and abutting against the back of the correction plate 15. Specifically, the telescopic column 19 slides laterally within the fixed cylinder 18, with its free end abutting against the back of the correction plate 15. The extension of the telescopic column 19 can push the correction plate 15 toward the center of the feeding mechanism 2. The back of the correction plate 15 is the end face of the correction plate 15 that faces away from the center of the feeding mechanism 2.

[0081] The reset spring 20 is arranged laterally, with one end connected to the bottom surface of the inner wall of the fixed cylinder 18 and the other end connected to one end of the connecting column.

[0082] In this embodiment, the force of the return spring 20 is used to push the material to move to both sides after it comes into contact with the correction plates 15 on both sides during the process of material deviation. At the same time, the return spring 20 on both sides is compressed and deformed. Under the action of the spring rebound force, the material is pushed towards the middle of the feeding mechanism 2. This ensures that the material does not accumulate excessively and also plays a pushing role, ensuring that the feed additive is accurately delivered to the bottom of the detection mechanism 4 and ensuring the accuracy of the detection.

[0083] In some embodiments of this utility model, such as Figure 1 , 2 As shown, the upper end of the correction plate 15 is fixedly connected to the rotating column 21, and the upper end of the rotating column 21 is rotatably connected to the lower end of the connecting arm 16, with the rotating shaft arranged vertically. Specifically, the correction plate 15 is rotatably mounted, and a stepped connecting hole can be provided on the connecting arm 16. A matching stepped boss is provided on the upper end of the rotating column 21, allowing it to be rotatably mounted at the lower end of the connecting arm 16. This facilitates adjustment of the tilt angle and adaptability to different detection widths of different types of detection mechanisms 4.

[0084] The alignment assembly 14 also includes: a lug plate 22, a threaded pin 23, and a slider 24. The lug plate 22 is fixedly mounted on one side of the frame 1 and positioned in front of the mounting block 17. The threaded pin 23 extends laterally and engages with the lug plate 22 via threads.

[0085] The slider 24 is ball-jointed to the end of the threaded pin 23 facing the feeding mechanism 2. A groove 25, extending along the length of the straightening plate 15, is formed on the back of the plate, and the slider 24 is slidably mounted within the groove 25. Specifically, the slider 24 can only move along the length of the straightening plate 15, i.e., in the longitudinal tilt direction shown in the attached figure. By tightening the threaded pin 23, the ball-jointed slider 24 can be moved laterally. During this lateral movement, the slider 24 moves relative to the groove 25, thereby changing the tilt angle of the straightening plate 15.

[0086] In this embodiment, the rotation of the threaded pin 23 drives the slider 24, which is ball-jointed at the end, to move laterally. During this lateral movement, the slider 24 moves relative to the groove 25, causing the correction plate 15 to rotate around the rotation point of the rotating column 21, thereby adjusting the tilt angle. The adjusted tilt angle of the correction plate 15 is reliable and will not easily rotate. Using this structure, the tilt angles of different tilt plates can be adjusted at any time, thereby adjusting the shortest distance between the two correction plates 15, thus adapting to different feed additives and different detection widths of the detection mechanism 4, improving the adaptability of this device.

[0087] In some embodiments of this utility model, such as Figure 1 ,2 As shown, the sliding fit between slider 24 and groove 25 is achieved by: groove 25 being a T-shaped groove on the back of the correction plate 15, extending along the length of the correction plate 15; slider 24 also having a T-shaped cross-section. The two fit together to achieve sliding installation. In this embodiment, the T-shaped structure provides reliable mechanical fit and simplifies manufacturing.

[0088] In some embodiments of this utility model, such as Figure 5 As shown, a receiving groove 26 is provided at the upper end of the mounting block 17. The receiving groove 26 extends in the lateral direction, and a limiting rod 27 is installed in the receiving groove 26. The limiting rod 27 extends in the lateral direction.

[0089] The connecting arm 16 has two first rods 1611 and one second rod 1612. The two first rods 1611 extend vertically and are spaced apart laterally. The second rod 1612 extends laterally, and the upper ends of the two first rods 1611 are respectively installed at the left and right ends of the second rod 1612. Specifically, the connecting arm 16 forms a "U"-shaped rod structure.

[0090] One of the first rods 1611 is laterally slidably installed within the receiving groove 26, and the limiting rod 27 slides through the lower end of the first rod 1611; the lower end of the other first rod 1611 is rotatably connected to the rotating column 21. Specifically, the cooperation between the first rod 1611 and the limiting rod 27 serves a precise guiding function. In this embodiment, a U-shaped connecting arm 16 structure is provided to make room, make reasonable use of space, and ensure reliable movement guidance of the entire connecting arm 16.

[0091] In some embodiments of this utility model, such as Figure 1 , 2 As shown, a longitudinally penetrating rectangular groove 28 is formed at the upper end of the frame 1, and the feeding mechanism 2 is installed within the rectangular groove 28. The upper top surface of the rectangular groove 28 is higher than the upper end of the feeding mechanism 2. The feeding mechanism 2 includes: a conveyor belt 29, a drive motor 30, and multiple rotating rollers 31.

[0092] The rotating shafts of multiple rotating rollers 31 extend laterally and are rotatably mounted within a rectangular groove 28, with the rollers 31 spaced longitudinally. Specifically, each rotating roller 31 is rotatably mounted within the rectangular groove 28 via bearing seats at both ends. A conveyor belt 29 is fitted over the outer side of the multiple rotating rollers 31. Specifically, the rotating rollers 31 at the front and rear ends provide transmission support for the conveyor belt 29, while the rotating rollers 31 in the middle support the conveyor belt, preventing the conveyor belt 29 from collapsing in the middle.

[0093] The drive motor 30 is mounted on the frame 1 and configured to drive the rotating roller 31 on the front or rear side to rotate. Specifically, the drive motor 30 is a servo motor, which is mounted on the frame 1 and its output shaft is coaxially mounted with the rotating shaft of the rotating roller 31 at the end to achieve the purpose of driving rotation.

[0094] In this embodiment, the reliable conveying of the conveyor belt 29 is utilized, and the height of the rectangular groove 28 is higher than the height of the conveyor belt 29, so as to avoid the problem of material overflowing from both sides of the frame 1 during the process of being leveled by the leveling mechanism 3.

[0095] In some embodiments of this utility model, such as Figure 1 As shown, the lower end of the guide plate 15 intermittently engages with the upper surface of the conveyor belt 29. This ensures that the guide plate 15 can reliably push all the feed additives on the conveyor belt 29 to the middle position of the conveyor belt 29.

[0096] In some embodiments of this utility model, such as Figure 1 , 3 As shown, the detection mechanism 4 includes a detection frame 32 and a metal detector. The detection frame 32 is fixedly mounted on the frame 1. Specifically, the detection frame 32 has an inverted U-shaped structure and is installed upside down on the frame 1 to facilitate the installation of the metal detector. The metal detector is installed on the lower side of the detection frame 32 and is used to detect feed additives passing below it. Specifically, the metal detector uses electromagnetic induction or X-ray detection technology. The feeding mechanism 2 is responsible for uniformly conveying the feed additives to the detection area, and the metal detector identifies metallic foreign objects through electromagnetic field changes or X-ray imaging. After the foreign object is identified, it is picked out manually or mechanically, which will not be described in detail here.

[0097] In some embodiments of this utility model, such as Figure 1 , 2 As shown, the width of conveyor belt 29 is greater than the width of flat material belt 5. The furthest lateral straight distance between the two straightening plates 15 is slightly greater than the width of conveyor belt 29. This ensures that materials do not fall off the sides of conveyor belt 29 during the leveling process, and also ensures that materials on conveyor belt 29 can reliably enter between the two straightening plates 15 for correction.

[0098] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A multi-stage detection device for metal foreign objects in feed additives, comprising a frame, characterized in that, The frame is equipped with a feeding mechanism, a leveling mechanism, and a detection mechanism. The feeding mechanism is used to convey feed additives. The leveling mechanism is located at the front inlet of the feeding mechanism. The detection mechanism is located at the rear outlet of the feeding mechanism and is used to detect metal foreign objects. The leveling mechanism includes a leveling belt, two leveling rollers, and a drive component; The two flat rollers are respectively rotatably mounted on the frame in the transverse direction and spaced apart in the longitudinal direction; The flat material belt is sleeved around the two flat material rollers and positioned above the feeding mechanism; The drive unit is mounted on the frame and is used to drive one of the flat rollers to rotate.

2. The multi-stage detection device for metallic foreign objects in feed additives according to claim 1, characterized in that, The leveling mechanism also includes: a translation plate, two connecting plates, and a pushing component; A translation plate is slidably mounted vertically on the frame, and both flat rollers are rotatably connected to the lower side of the translation plate; Two connecting plates are respectively installed on the left and right sides of the translation plate. The rotating shaft of each flat material roller is inserted into the connecting plates on both sides. The driving component is installed on one of the connecting plates, and its output end is connected to the shaft end of one of the flat material rollers on the corresponding connecting plate. A pusher, mounted on the frame, is configured to push the translation plate to move along the vertical direction of the frame.

3. The multi-stage detection device for metallic foreign objects in feed additives according to claim 2, characterized in that, Both of the flat rollers have sprockets mounted on their shaft ends that pass through the other translation plate, and a chain is provided between the two sprockets.

4. The multi-stage detection device for metallic foreign objects in feed additives according to claim 1, characterized in that, Also includes: Corrective agencies; The correction mechanism is mounted on the frame and positioned between the leveling mechanism and the detection mechanism. The correction mechanism includes two symmetrically arranged correction components. The correction assembly includes a correction plate, a connecting arm, and a mounting block; The mounting block is fixedly installed on the frame; The connecting arm is disposed on the mounting block and extends toward the feeding mechanism; The correction plate is inclinedly disposed above the feeding mechanism and connected to the extension end of the connecting arm facing the feeding mechanism; the two correction plates are arranged in a figure-eight shape and gradually narrow along the conveying direction of the feeding mechanism.

5. The multi-stage detection device for metallic foreign objects in feed additives according to claim 4, characterized in that, The connecting arm is slidably mounted on the upper side of the mounting block in a transverse direction. The correction assembly also includes: a fixed cylinder, a telescopic column, and a return spring. The fixed cylinder extends laterally and is disposed on the mounting block, with its opening facing the side of the feeding mechanism; The telescopic column is slidably installed inside the fixed cylinder, and one end of the telescopic column extending out of the fixed cylinder abuts against the back of the correction plate; The reset spring is arranged laterally, with one end connected to the bottom surface of the fixed cylinder and the other end connected to one end of the connecting column.

6. The multi-stage detection device for metallic foreign objects in feed additives according to claim 5, characterized in that, The upper end of the correction plate is fixedly connected to a rotating column, the upper end of the rotating column is rotatably connected to the lower end of the connecting arm, and the rotating shaft is arranged vertically. The correction assembly also includes: an ear plate, a threaded pin, and a slider. The ear plate is fixedly installed on one side of the frame and placed in front of the mounting block; The threaded pin extends laterally and engages with the threaded ear plate. The slider ball is hinged to the end of the threaded pin facing the feeding mechanism, and a groove is opened on the back of the correction plate along its length direction, and the slider is slidably installed in the groove.

7. The multi-stage detection device for metallic foreign objects in feed additives according to claim 6, characterized in that, The upper end of the mounting block has a receiving groove, which extends laterally. A limiting rod is installed in the receiving groove, which also extends laterally. The connecting arm has two first rods and one second rod. The two first rods extend vertically and are spaced apart laterally. The second rod extends laterally, and the upper ends of the two first rods are respectively installed at the left and right ends of the second rod. One of the first rods is laterally slidably installed in the receiving groove, and the limiting rod slides through the lower end of the first rod; the lower end of the other first rod is rotatably connected to the rotating column.

8. The multi-stage detection device for metallic foreign objects in feed additives according to claim 4, characterized in that, The upper end of the frame has a longitudinally penetrating rectangular slot, and the feeding mechanism includes: a conveyor belt, a drive motor, and multiple rotating rollers; The rotating shafts of the plurality of rotating rollers extend laterally and are rotatably mounted in the rectangular groove, and the plurality of rotating rollers are spaced apart longitudinally. The conveyor belt is sleeved on the outside of the plurality of rotating rollers; The drive motor is mounted on the frame and configured to drive the rotating rollers on the front or rear sides to rotate.

9. The multi-stage detection device for metallic foreign matter in feed additives according to claim 8, characterized in that, The lower end of the correction plate is intermittently engaged with the upper surface of the conveyor belt.

10. The multi-stage detection device for metallic foreign objects in feed additives according to claim 1, characterized in that, The testing mechanism includes a testing frame and a metal detector; The testing frame is fixedly installed on the machine frame; The metal detector is installed on the lower side of the detection frame and is used to detect feed additives passing beneath it.

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