Metal detector self-adjusting belt straightener

Abstract

This invention relates to the field of metal detection technology, specifically to a self-adjusting belt leveling device for metal detection. It includes a workbench and a belt conveyor positioned above the workbench. The self-adjusting leveling component of this invention uses a drive motor to rotate a drum, and utilizes a flat trough to quantitatively receive fibers. This buffers the material accumulation problem caused by fluctuations in upstream material flow. Spherical and arc-shaped contact blocks work together to compress the piston rod. Hydraulic oil is supplied to the sliding chamber through a liquid storage chamber and connecting channel to lift the piston rod and the compression plate, moderately leveling the loose fibers in the trough. This ensures that the fiber layer thickness and looseness falling into the belt conveyor are more uniform, reducing the disturbance of the alternating magnetic field of the metal detector inside the detection chamber caused by changes in material density, thus reducing the frequency of false alarms. Simultaneously, the liquid injection component sprays static electricity off the fibers, further stabilizing the reference magnetic field for metal detection, reducing manual shutdown and material spreading operations, and maintaining continuous conveying operation on the production line.

Description

Technical Field

[0001] This invention relates to the field of metal detection technology, specifically to a metal detection self-adjusting belt leveler. Background Technology

[0002] Metal detection equipment is often installed on the conveyor line in the production process of nonwoven fabrics. Conventional equipment mainly consists of a conveyor belt, a metal detection hood, a detection unit, and an alarm mechanism. It operates based on the electromagnetic induction principle of an alternating electromagnetic field. The conveyor belt carries the loose fibers at a constant speed through an induction coil inside the detection hood. The coil forms a stable alternating magnetic field. When the fiber material contains hard metal impurities such as metal fragments, broken needles, or pins, the metal impurities cut the magnetic field lines, generating eddy current signals. The detection unit captures the distorted magnetic field signal and identifies the foreign object, triggering an audible and visual alarm to prompt the operator to remove the impurities. Traditional equipment relies solely on a straight belt to directly receive material from upstream, focusing only on identifying and warning of metal impurities. It can only perform basic metal foreign object detection and is suitable for conveying and detecting materials with regular shapes.

[0003] Traditional fiber metal detection equipment lacks a pre-positioned self-leveling structure. Upstream fibers are directly fed freely, easily leading to localized material buildup, significant variations in fiber thickness, and inconsistent fiber density on the conveyor belt surface. The constantly changing density of the material layer continuously disrupts the stability of the alternating magnetic field in the detection area, directly causing frequent false alarms from the metal detector. To correct the material's shape, operators need to manually level the piled-up fibers multiple times, frequently interrupting production line operation and significantly reducing overall production efficiency. Simultaneously, the equipment lacks a precise removal structure after detecting metal impurities, forcing operators to either stop the machine to manually pick up the impurities or use a single-plate unloading structure. This single-plate unloading method discharges a large amount of qualified fibers from the surrounding area, resulting in significant raw material loss and increased production costs. These two shortcomings together hinder the continuous and stable operation of the equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a self-adjusting belt leveling device for metal detection, in order to solve the problems mentioned in the background art. Traditional fiber metal detection equipment lacks a pre-leveling mechanism, and the direct feeding of fibers easily leads to accumulation and uneven thickness, causing magnetic field disturbance, frequent false alarms, and the need for manual shutdown to sort materials, interrupting continuous production. At the same time, the equipment lacks a precise impurity removal structure, and manual picking or overall flip-plate unloading will result in low efficiency and excessive loss of good fibers, which is not conducive to the long-term stable production of the equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a metal detector self-adjusting belt leveling device, comprising a workbench, a belt conveyor located above the workbench, and a detection cover located in the middle section of the belt conveyor. A metal detector is installed inside the detection cover. A support frame is fixed to the outside of the feed end of the belt conveyor on the workbench. A limiting roller is fixedly mounted on the top of the support frame. A guide cover is fixedly installed above the limiting roller. A feed inlet is provided between the inner cavity of the guide cover and the inner cavity of the limiting roller. A discharge outlet is provided at the bottom of the limiting roller to connect with the belt conveyor. A self-adjusting leveling component is assembled inside the limiting roller. A receiving groove is provided on the lower inner side of the detection cover, and a rejection component is provided in the receiving groove. The self-adjusting leveling component includes a rotating drum, a flattening groove, and an extrusion plate. The rotating drum is rotatably fitted inside the limiting roller. The flattening groove is embedded inside one outer surface of the rotating drum. The extrusion plate is fitted onto the bottom wall of the flattening groove.

[0006] Furthermore, a rotating shaft is fixedly installed at the middle of both ends of the rotating drum, and a fixed frame is fixedly installed near the outside of one of the rotating shafts of the support frame. A drive motor is fixedly installed on the outside of the fixed frame, and the output end of the drive motor is coaxially and fixedly connected to one end of the corresponding rotating shaft. A control box is fixed on one side of the worktable.

[0007] Furthermore, a mounting bracket is fixedly installed on the outside of the support frame near another rotating shaft. One end of the rotating shaft is rotatably mounted on the outside of the mounting bracket on the side away from the rotating cylinder. A spherical abutment block is provided on the outside of the edge of the rotating cylinder near the mounting bracket. An arc-shaped abutment block is provided below the circumferential rotation trajectory of the spherical abutment block. The end of the arc-shaped abutment block away from the spherical abutment block is fixedly connected to the support frame through a bracket.

[0008] Furthermore, a liquid storage chamber is provided inside the rotating drum on the side near the spherical contact block. A piston rod is slidably and sealed inside the liquid storage chamber. One end of the piston rod is fixedly connected to one side of the spherical contact block. The rotating drum has multiple sliding cavities vertically arranged along the axial direction below the flat groove. A piston rod is slidably and sealed inside each sliding cavity. The top end of the piston rod is fixedly connected to the bottom end of the extrusion plate.

[0009] Furthermore, a connecting channel is provided between several of the sliding chambers and the liquid storage chamber, and a compression spring is sleeved on the outside of the piston rod. The two ends of the compression spring are respectively fixedly installed on the outside of one side of the spherical contact block and the outside of one side of the rotating cylinder. A liquid injection assembly is provided on the outside of the end of the rotating cylinder near the spherical contact block.

[0010] Furthermore, the injection assembly includes a teardrop-shaped extrusion block, a positioning frame, and a piston extrusion rod. The teardrop-shaped extrusion block is sleeved and fixed outside a rotating shaft on the corresponding side. The positioning frame is fixedly installed on the top outside of the worktable. The piston extrusion rod is vertically slidably installed inside one end of the positioning frame.

[0011] Furthermore, a mounting base is fixedly installed at the top of the piston extrusion rod, and an abutment roller is rotatably installed at the top of the mounting base. The outer circumferential surface of the abutment roller abuts and fits against the bottom contour of the teardrop-shaped extrusion block. A suction cylinder is fixed to the outside of the positioning frame near the bottom end of the piston extrusion rod, and the piston end of the bottom end of the piston extrusion rod is slidably and sealed inside the suction cylinder.

[0012] Furthermore, the bottom end of the suction cylinder is fixedly connected to a one-way inlet valve pipe and a one-way outlet valve pipe. A liquid storage cylinder is fixed to the outside of one side of the workbench. The input end of the one-way inlet valve pipe is sealed and fixed inside the liquid storage cylinder. A spray pipe is fixed to the edge of the limiting roller near the outlet by a bracket. The output end of the one-way outlet valve pipe is fixedly connected to the input end of the spray pipe.

[0013] Furthermore, a return spring is sleeved on the outside of the piston extrusion rod, and the two ends of the return spring are respectively fixedly installed on the outside of the top wall of the positioning frame and the outside of the bottom wall of the mounting base.

[0014] Furthermore, the rejection assembly includes a C-shaped rejection frame and a cylinder. The C-shaped rejection frame is disposed inside the receiving slot, and the cylinder is fixed outside the detection cover. The output end of the cylinder is fixedly connected to one side of the C-shaped rejection frame. The open end of the C-shaped rejection frame faces the top outer surface of the belt conveyor. A discharge channel is installed inside the detection cover on the side away from the C-shaped rejection frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The self-adjusting leveling component of this invention relies on a drive motor to rotate the drum and uses a flat trough to quantitatively receive fibers. This buffers the material accumulation problem caused by fluctuations in the upstream material flow. The spherical and arc-shaped contact blocks work together to squeeze the piston rod. Hydraulic oil is delivered to the sliding chamber through the liquid storage chamber and connecting channel to lift the piston rod and the extrusion plate, which moderately levels the loose fibers in the trough. This makes the thickness and looseness of the fiber layer falling into the belt conveyor more uniform, reducing the disturbance of the alternating magnetic field of the metal detector inside the detection hood caused by changes in the density of the material layer, and reducing the frequency of false alarms. The rotating shaft links the teardrop-shaped extrusion block to drive the piston extrusion rod, which works with the return spring to drive the suction cylinder to reciprocate. The antistatic agent inside the storage cylinder is extracted through the one-way liquid inlet valve pipe and then delivered to the spray pipe through the one-way liquid outlet valve pipe to spray the fibers to remove static electricity, further stabilizing the reference magnetic field of metal detection, reducing manual shutdown and material spreading operations, and maintaining continuous conveying conditions on the production line.

[0016] This invention arranges a rejection component inside the storage slot at the bottom of the detection cover. Under normal operating conditions, the C-shaped rejection frame is stored inside the storage slot, without interfering with the normal conveying of surface fibers on the belt conveyor and the detection work of the metal detector. When the equipment detects a metal impurity signal, the cylinder directly pushes out the C-shaped rejection frame to directionally push the impurity-containing local fibers, sending only a small area of ​​fibers around the impurity into the discharge channel to complete the separation operation. This is different from the traditional method of stopping the whole machine for manual picking or overall flip-plate unloading, reducing the amount of qualified fibers discharged in the impurity removal process, controlling unnecessary raw material loss. After the cylinder completes the rejection action, the C-shaped rejection frame can be retracted, and the equipment can quickly resume the normal detection and conveying process, reducing the production line downtime caused by the impurity removal process, improving the automation level of metal foreign object handling, and cooperating with the front-end self-adjusting equalization component to comprehensively optimize the continuous production adaptability of the fiber metal detection equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the limiting roller and the guide cover of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the limiting roller and the guide cover of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 6 This is a three-dimensional structural diagram of the limiting roller and the discharge port of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point C; Figure 8 This is a three-dimensional structural diagram of the rotating cylinder and extrusion plate of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point D; Figure 10 This is a partial cross-sectional three-dimensional structural schematic diagram of the limiting roller and rotating drum of the present invention; Figure 11 This is a three-dimensional structural diagram of the detector cover and C-shaped rejection frame of the present invention; Figure 12 This is a three-dimensional structural diagram of the C-shaped rejection frame and cylinder of the present invention.

[0018] In the attached diagram, the components represented by each number are as follows: 1. Workbench; 2. Belt conveyor; 3. Detector cover; 4. Metal detector; 5. Control box; 6. Support frame; 7. Limiting roller; 8. Guide cover; 9. Feed inlet; 10. Discharge outlet; 11. Fixing frame; 12. Rotary shaft; 13. Drive motor; 14. Mounting frame; 15. Rotary drum; 16. Flattening trough; 17. Extrusion plate; 18. Connecting channel; 19. Sliding cavity; 20. Piston rod; 21. Liquid storage container. 21. Cavity; 22. Piston column; 23. Spherical contact block; 24. Compression spring; 25. Arc-shaped contact block; 26. Teardrop-shaped extrusion block; 27. Positioning frame; 28. Piston extrusion rod; 29. ​​Mounting base; 30. Contact roller; 31. Suction cylinder; 32. One-way liquid inlet valve pipe; 33. Liquid storage cylinder; 34. One-way liquid discharge valve pipe; 35. Spray pipe; 36. Return spring; 37. Collection trough; 38. C-shaped rejection rack; 39. Cylinder; 40. Discharge channel. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1 - Figure 10 The metal detector self-adjusting belt leveling device includes a workbench 1, a belt conveyor 2 located above the workbench 1, and a detection cover 3 located in the middle of the belt conveyor 2. The detection cover 3 is equipped with a metal detector 4. A support frame 6 is fixed on the outside of the feed end of the belt conveyor 2 on the workbench 1. A limiting roller 7 is fixedly installed at the top of the support frame 6. A guide cover 8 is fixedly installed above the limiting roller 7. A feed inlet 9 is opened between the inner cavity of the guide cover 8 and the inner cavity of the limiting roller 7. A discharge outlet 10 is opened at the bottom of the limiting roller 7 to connect with the belt conveyor 2. A self-adjusting leveling component is assembled in the inner cavity of the limiting roller 7. The self-adjusting leveling component includes a rotating drum 15, a flattening trough 16, and an extrusion plate 17. The rotating drum 15 is rotatably fitted inside the limiting roller 7. The flattening trough 16 is embedded in the inner surface of one side of the rotating drum 15. The extrusion plate 17 is fitted on the bottom wall of the flattening trough 16.

[0021] Rotary shafts 12 are fixedly installed at the middle of both ends of the rotating drum 15. A fixed frame 11 is fixedly installed on the outside of one of the rotating shafts 12 near the support frame 6. A drive motor 13 is fixedly installed on the outside of the fixed frame 11. The output end of the drive motor 13 is coaxially fixedly connected to one end of the corresponding rotating shaft 12. A control box 5 is fixed on one side of the worktable 1.

[0022] A mounting bracket 14 is fixedly installed on the outside of the support frame 6 near another rotating shaft 12. One end of the rotating shaft 12 is rotatably mounted on the outside of the mounting bracket 14 on the side away from the rotating cylinder 15. A spherical abutment block 23 is provided on the outside of the edge of the rotating cylinder 15 near the mounting bracket 14. An arc-shaped abutment block 25 is provided below the circumferential rotation trajectory of the spherical abutment block 23. The end of the arc-shaped abutment block 25 away from the spherical abutment block 23 is fixedly connected to the support frame 6 through a bracket.

[0023] A liquid storage chamber 21 is provided inside the rotating drum 15 near the spherical contact block 23. A piston column 22 is slidably and sealed inside the liquid storage chamber 21. One end of the piston column 22 is fixedly connected to one side of the spherical contact block 23. Multiple sliding chambers 19 are vertically provided along the axial direction below the flat groove 16 of the rotating drum 15. A piston rod 20 is slidably and sealed inside each sliding chamber 19. The top end of the piston rod 20 is fixedly connected to the bottom end of the extrusion plate 17.

[0024] A connecting channel 18 is provided between several sliding chambers 19 and liquid storage chamber 21. A compression spring 24 is sleeved on the outside of the piston rod 20. The two ends of the compression spring 24 are respectively fixedly installed on one side of the spherical contact block 23 and one side of the rotating cylinder 15. A liquid injection assembly is provided on the outside of one end of the rotating cylinder 15 near the spherical contact block 23.

[0025] The liquid injection assembly includes a teardrop-shaped extrusion block 26, a positioning frame 27, and a piston extrusion rod 28. The teardrop-shaped extrusion block 26 is sleeved and fixed on the outside of a rotating shaft 12 on the corresponding side. The positioning frame 27 is fixedly installed on the outside of the top of the worktable 1. The piston extrusion rod 28 is vertically slidably installed inside one end of the positioning frame 27.

[0026] A mounting base 29 is fixedly installed at the top of the piston extrusion rod 28. An abutment roller 30 is rotatably installed at the top of the mounting base 29. The outer circumferential surface of the abutment roller 30 abuts against the bottom contour of the teardrop-shaped extrusion block 26. A suction cylinder 31 is fixedly installed on the positioning frame 27 near the bottom of the piston extrusion rod 28. The piston end of the bottom of the piston extrusion rod 28 is slidably sealed inside the suction cylinder 31.

[0027] The bottom end of the suction cylinder 31 is fixedly connected to a one-way liquid inlet valve pipe 32 and a one-way liquid outlet valve pipe 34. A liquid storage cylinder 33 is fixed to the outside of one side of the workbench 1. The input end of the one-way liquid inlet valve pipe 32 is sealed and fixed inside the liquid storage cylinder 33. A spray pipe 35 is fixed to the edge of the limiting roller 7 near the outlet 10 by a bracket. The output end of the one-way liquid outlet valve pipe 34 is fixedly connected to the input end of the spray pipe 35.

[0028] A return spring 36 is sleeved on the outside of the piston extrusion rod 28. The two ends of the return spring 36 are respectively fixedly installed on the outside of the top wall of the positioning frame 27 and the outside of the bottom wall of the mounting base 29.

[0029] In this embodiment, during the manufacturing of the equipment, hydraulic oil is pre-filled into the connecting channel 18, sliding chamber 19 and liquid storage chamber 21 through an external oiling device, so that each hydraulic chamber is in a full state, ensuring that the subsequent sliding process of piston column 22 and piston rod 20 is smooth and stable, reducing the probability of mechanical jamming, and providing a stable hydraulic transmission foundation for the overall self-adjusting and equalizing action.

[0030] During equipment operation, fluffy fiber material is first introduced into the guide hood 8 and then enters the inner cavity of the limiting roller 7 through the feed inlet 9. The drive motor 13 drives the rotating drum 15 to rotate at a constant speed through the rotating shaft 12. The flat trough 16 embedded on the outer periphery of the rotating drum 15 rotates synchronously with the rotor and passes through the feed inlet 9 to receive the falling fiber material. The flat trough 16 is used to fix the trough volume space to achieve single quantitative material feeding, which can effectively receive unstable material falling from the upstream and avoid local material accumulation on the surface of the belt conveyor 2.

[0031] During the continuous rotation of the rotating drum 15, the spherical contact block 23 mounted at the end rotates along a circumferential trajectory, gradually contacting and pressing against the arc-shaped contact block 25. The arc-shaped contact block 25 exerts an axial pushing force on the spherical contact block 23, pushing the piston column 22 to compress the oil inside the liquid storage chamber 21. The pressurized oil is simultaneously input into each sliding chamber 19 through the connecting channel 18, thereby pushing the piston rod 20 upward and causing the extrusion plate 17 to slightly extrude the fibrous material in the groove along the flat trough 16. By using an adaptive hydraulic extrusion method to regulate the loose fibers in the groove, the density and fluffiness of the fiber material received in a single operation tend to be consistent, improving the problem of large differences in thickness and fluffiness of incoming materials, and providing a uniform material foundation for subsequent metal detection operations.

[0032] When the flat trough 16 carrying the regular fibers rotates with the drum 15 to the bottom outlet 10, the flat fiber material in the trough falls smoothly onto the surface of the belt conveyor 2, forming a continuous fiber material layer with uniform thickness and flat distribution. This avoids the problems of local accumulation and uneven thickness caused by traditional free-falling materials, effectively reduces the interference of material layer density fluctuations on the detection alternating magnetic field, reduces the false alarm probability of the metal detector 4, eliminates the need for frequent manual shutdowns to sort materials, and ensures continuous operation of the production line.

[0033] As the spherical contact block 23 rotates with the rotating drum 15 and disengages from the arc-shaped contact block 25, the compression spring 24 releases its elastic restoring force, pulling the piston rod 20 and piston column 22 to reverse and reset. The oil in the sliding chamber 19 and the liquid storage chamber 21 flows back and resets, and the extrusion plate 17 falls back to the bottom of the trough, so that the flat trough 16 restores its initial trough capacity structure and can rotate again to the feeding position to receive fiber materials, realizing continuous cyclic adaptive equalization operation.

[0034] At the same time, during the rotation of the rotating shaft 12, the teardrop-shaped extrusion block 26 is driven to rotate continuously. The protruding contour section of the teardrop-shaped extrusion block 26 periodically abuts against the pressing roller 30, causing the mounting base 29 and the piston extrusion rod 28 to move vertically downward along the positioning frame 27, compressing the internal space of the suction cylinder 31. When the protruding contour of the teardrop-shaped extrusion block 26 disengages from the pressing roller 30, the return spring 36 rebounds and drives the piston extrusion rod 28 upward, creating a negative pressure inside the suction cylinder 31. The antistatic liquid is then drawn from the inside of the storage cylinder 33 through the one-way liquid inlet valve pipe 32, completing the automatic liquid storage and replenishment action.

[0035] In the next downward stroke, the antistatic liquid stored in the suction cylinder 31 is transported to the spray pipe 35 through the one-way drain valve pipe 34. The spray pipe 35 performs micro-atomized spraying on the uniform fiber layer falling from the outlet 10, which can improve the problem of static electricity accumulation during fiber transportation and further stabilize the working baseline of metal detection. The entire mechanism relies on mechanical linkage to achieve the coordinated operation of automatic leveling and automatic liquid replenishment spraying without manual intervention, and continuously and stably outputs a uniform and flat fiber layer, effectively solving the technical problems of unstable detection and poor production continuity caused by the lack of pre-leveling and uneven material state in traditional equipment.

[0036] Example 2: Please refer to Figure 11 - Figure 12 This embodiment further describes Example 1. A storage groove 37 is provided on the lower inner side of the detector cover 3, and a rejection component is provided in the storage groove 37.

[0037] The rejection assembly includes a C-shaped rejection frame 38 and a cylinder 39. The C-shaped rejection frame 38 is located inside the receiving slot 37, and the cylinder 39 is fixed to the outside of the detection cover 3. The output end of the cylinder 39 is fixedly connected to one side of the C-shaped rejection frame 38. The open end of the C-shaped rejection frame 38 faces the top outer surface of the belt conveyor 2. The detection cover 3 has a discharge channel 40 installed inside the side away from the C-shaped rejection frame 38.

[0038] In this embodiment, after the equipment completes the front-end fiber self-adjustment and homogenization, anti-static spraying and regularization conveying processes, the uniform and stable fiber material layer enters the detection hood 3 at a constant speed along the belt conveyor 2. The metal detector 4 performs full-process metal foreign object detection on the continuously laid-out fiber material. When the metal detector 4 detects metal impurities inside the fiber material, the equipment control system records the location of the foreign object in real time and locks the material conveying process, controlling the belt conveyor 2 to pause conveying briefly, so that the impurity-containing material accurately stops within the working area of ​​the C-shaped rejection frame 38.

[0039] The storage slot 37 on the lower inner side of the detector cover 3 can store and hide the C-shaped rejection frame 38 during normal equipment testing operations, preventing the C-shaped rejection frame 38 from contacting the normally conveyed fiber material layer, avoiding interference with the regular material conveying and testing process, and ensuring the stability of the equipment's normal conveying and testing. When impurity removal is required, the cylinder 39 fixed to the outside of the detector cover 3 receives a control signal and extends, horizontally pushing the C-shaped rejection frame 38 outward from inside the storage slot 37, so that the C-shaped rejection frame 38, with its opening facing the upper surface of the belt conveyor 2, covers and adheres to the outside of the local area containing impurities.

[0040] Compared to the traditional equipment's overall flip-plate unloading method for impurity removal, this structure relies on the enclosed structure of the C-shaped rejection frame 38 to push and remove only the local section containing metal impurities. It does not require unloading the entire fiber material layer, which can effectively reduce the range of qualified fibers that are carried away during the impurity removal process, reduce material loss, reduce raw material waste, and help control production and processing costs.

[0041] During the process of pushing the section containing impurities, the C-shaped rejection rack 38 can smoothly push the impurities and a small amount of surrounding fibers to the discharge channel 40 inside the detection cover 3. The impurities are discharged and collected outward through the discharge channel 40, completing the precise point rejection operation. After the impurity removal operation is completed, the cylinder 39 retracts, driving the C-shaped rejection rack 38 back into the collection tank 37. The equipment is then released from standby mode, and the belt conveyor 2 continues to carry the subsequent uniform fiber material layer into the detection area, restoring the continuous detection production process.

[0042] This rejection component relies on electromechanical linkage to achieve precise, targeted, and small-scale impurity removal operations, replacing the traditional manual impurity picking or overall flip-plate unloading operation mode. It reduces the frequency of manual intervention, improves the automation level and efficiency of metal impurity removal, and effectively improves the shortcomings of traditional equipment in low impurity removal efficiency and high loss of good fiber. Together with the front-end self-adjusting equalization component, it enhances the overall operational stability and production continuity of the equipment.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal detecting self-adjusting belt leveling device, comprising a workbench (1), a belt conveyor (2) arranged above the workbench (1), and a detection cover (3) arranged at the middle section of the belt conveyor (2), characterized in that: The detection cover (3) is equipped with a metal detector (4). The workbench (1) is fixed with a support frame (6) on the outside of the feed end of the belt conveyor (2). The top of the support frame (6) is fixed with a limiting roller (7). A guide cover (8) is fixed above the limiting roller (7). The inner cavity of the guide cover (8) and the inner cavity of the limiting roller (7) are connected and have a feed inlet (9). The bottom of the limiting roller (7) has a discharge outlet (10) that is connected to the belt conveyor (2). The inner cavity of the limiting roller (7) is equipped with a self-adjusting equalization component. The lower inner side of the detection cover (3) has a collection groove (37). The collection groove (37) is equipped with a rejection component. The self-adjusting leveling component includes a rotating drum (15), a paving groove (16), and an extrusion plate (17). The rotating drum (15) is rotatably fitted inside the limiting roller (7). The paving groove (16) is embedded inside the outer surface of one side of the rotating drum (15). The extrusion plate (17) is fitted onto the bottom wall of the paving groove (16).

2. The metal detector self-adjusting belt leveler according to claim 1, characterized in that: A rotating shaft (12) is fixedly installed at the middle of both ends of the rotating drum (15). A fixed frame (11) is fixedly installed on the outside of one of the rotating shafts (12) of the support frame (6). A drive motor (13) is fixedly installed on the outside of the fixed frame (11). The output end of the drive motor (13) is coaxially fixedly connected to one end of the corresponding rotating shaft (12). A control box (5) is fixed on one side of the workbench (1).

3. The metal detector self-adjusting belt leveler according to claim 2, characterized in that: The support frame (6) is fixedly mounted with a mounting frame (14) near the outside of another rotating shaft (12). One end of the rotating shaft (12) is rotatably mounted on the outside of the mounting frame (14) away from the rotating cylinder (15). A spherical abutment block (23) is provided on the outside of the edge of the rotating cylinder (15) near the mounting frame (14). An arc-shaped abutment block (25) is provided below the circumferential rotation trajectory of the spherical abutment block (23). The end of the arc-shaped abutment block (25) away from the spherical abutment block (23) is fixedly connected to the support frame (6) through a bracket.

4. The metal detector self-adjusting belt leveler according to claim 3, characterized in that: The rotating drum (15) has a liquid storage chamber (21) on the side near the spherical contact block (23). A piston column (22) is slidably and sealed inside the liquid storage chamber (21). One end of the piston column (22) is fixedly connected to one side of the spherical contact block (23). The rotating drum (15) has multiple sliding chambers (19) vertically arranged along the axial direction below the flat groove (16). A piston rod (20) is slidably and sealed inside each sliding chamber (19). The top end of the piston rod (20) is fixedly connected to the bottom end of the extrusion plate (17).

5. The metal detector self-adjusting belt leveler according to claim 4, characterized in that: A connecting channel (18) is provided between several sliding cavities (19) and liquid storage cavities (21). A compression spring (24) is sleeved on the outside of the piston rod (20). The two ends of the compression spring (24) are respectively fixedly installed on one side of the spherical contact block (23) and on one side of the rotating cylinder (15). An injection assembly is provided on the outside of the end of the rotating cylinder (15) near the spherical contact block (23).

6. The metal detector self-adjusting belt leveler according to claim 5, characterized in that: The liquid injection assembly includes a teardrop-shaped extrusion block (26), a positioning frame (27), and a piston extrusion rod (28). The teardrop-shaped extrusion block (26) is sleeved and fixed outside a rotating shaft (12) on the corresponding side. The positioning frame (27) is fixedly installed on the top of the worktable (1). The piston extrusion rod (28) is vertically slidably installed inside one end of the positioning frame (27).

7. The metal detector self-adjusting belt leveler according to claim 6, characterized in that: The piston extrusion rod (28) is fixedly mounted with a mounting base (29), and the mounting base (29) is rotatably mounted with an abutment roller (30). The outer circumferential surface of the abutment roller (30) abuts against the bottom contour of the teardrop-shaped extrusion block (26). The positioning frame (27) is fixed with a suction cylinder (31) near the bottom of the piston extrusion rod (28). The piston end of the bottom of the piston extrusion rod (28) is slidably sealed inside the suction cylinder (31).

8. The metal detector self-adjusting belt leveler according to claim 7, characterized in that: The bottom end of the suction cylinder (31) is fixedly connected to a one-way liquid inlet valve pipe (32) and a one-way liquid outlet valve pipe (34). A liquid storage cylinder (33) is fixed on the outside of one side of the workbench (1). The input end of the one-way liquid inlet valve pipe (32) is sealed and fixed inside the liquid storage cylinder (33). A spray pipe (35) is fixed to the edge of the limiting roller (7) near the outlet (10) by a bracket. The output end of the one-way liquid outlet valve pipe (34) is fixedly connected to the input end of the spray pipe (35).

9. The metal detector self-adjusting belt leveler according to claim 7, characterized in that: The piston compression rod (28) is fitted with a return spring (36), and the two ends of the return spring (36) are respectively fixedly installed on the outside of the top wall of the positioning frame (27) and the outside of the bottom wall of the mounting base (29).

10. The metal detector self-adjusting belt leveler according to claim 1, characterized in that: The rejection assembly includes a C-shaped rejection frame (38) and a cylinder (39). The C-shaped rejection frame (38) is located inside the receiving slot (37), and the cylinder (39) is fixed outside the detection cover (3). The output end of the cylinder (39) is fixedly connected to one side of the C-shaped rejection frame (38). The open end of the C-shaped rejection frame (38) faces the top outer surface of the belt conveyor (2). The detection cover (3) has a discharge channel (40) installed inside the side away from the C-shaped rejection frame (38).

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