A sweeper for permanent magnet drums

Abstract

This utility model discloses a cleaner for permanent magnet drums, relating to the field of drum cleaning technology. It includes a connecting rod, two elastic compensation adjustment seats, and a cleaning scraper mechanism. The connecting rod comprises a central rod parallel to the outer circumference of the drum and located between two end caps, a U-shaped frame spanning both sides of the end caps, and an extension rod located outside the end caps. One end of the U-shaped frame is fixedly connected to the end of the central rod, and the other end is fixedly connected to the end of the extension rod. The two elastic compensation adjustment seats are respectively fitted onto the corresponding extension rods. The cleaning scraper mechanism includes a scraper mounting plate and multiple torsion alloy scrapers mounted on the scraper mounting plate. Multiple mounting slots are spaced apart on the scraper mounting plate, and each mounting slot contains a torsion alloy scraper. The tip of the torsion alloy scraper is adapted to fit against the outer circumference of the drum. This cleaner has a simple structure, is easy to operate, and can effectively remove impurities from permanent magnet drums.

Description

Technical Field

[0001] This utility model relates to the field of drum cleaning technology, specifically to a cleaner for a permanent magnet drum. Background Technology

[0002] A permanent magnet drum magnetic separator is a magnetic mechanical device suitable for screening fine-particle magnetic minerals or removing magnetic minerals mixed in with non-magnetic minerals.

[0003] To improve processing efficiency, existing permanent magnet drum magnetic separators have been modified to use conveyor belts. However, in the existing permanent magnet drum cleaning process, the inevitable wear of the scraper during long-term operation is not taken into account. As the scraper wears, the cleaning effect gradually decreases or even disappears. Furthermore, the ideal installation position of the scraper is usually below and behind the pulley, which is low and difficult to observe, making it hard to judge the scraper wear. The scraper's continued operation can only be roughly judged based on the cleanliness of the conveyor belt, making it impossible to detect and replace worn blades in a timely manner, which wastes a lot of time. After discovering a scraper problem, the machine must be stopped to check the specific scraper where the problem is before replacement can be performed, wasting a lot of time and significantly impacting work efficiency.

[0004] Furthermore, considering the structural shape of the permanent magnet roller, the ideal installation position of the existing sweeper often interferes with the end caps at both ends of the permanent magnet roller, making it impossible to install the scraper in the most suitable position, thus affecting the performance.

[0005] Finally, the operation of the sweeper blades requires a continuous compensating force, but there is no clear standard for the amount of compensating force, so the installation and adjustment effect is affected by the installer's experience.

[0006] Therefore, there is still room for improvement in the aforementioned existing technologies. Utility Model Content

[0007] In view of this, the main purpose of this utility model is to propose a sweeper for permanent magnet drums to solve the technical problem of incomplete cleaning by existing permanent magnet drums.

[0008] To achieve the above objectives, this utility model proposes a sweeper for a permanent magnet drum, which is installed on both sides of the outer circumference of a permanent magnet drum. The permanent magnet drum includes a drum and end caps symmetrically connected to both ends of the drum. The diameter of the end caps is larger than the diameter of the drum. The sweeper for the permanent magnet drum includes a connecting rod, two elastic compensation adjusting seats, and a sweeping scraper mechanism, wherein: The connecting rod includes a middle rod arranged parallel to the outer circumference generatrix of the roller and located between the two end caps, a U-shaped frame spanning both sides of the end caps, and an extension rod located outside the end caps. One end of the U-shaped frame is fixedly connected to the end of the middle rod, and the other end is fixedly connected to the end of the extension rod near the end cap. The U-shaped frames on both sides and the extension rods are symmetrically arranged about the vertical central axis of the middle rod, and the two extension rods are coaxially arranged. A scraper mounting plate is provided on the outer circumference of the middle rod. Two elastic compensation adjustment seats are respectively fitted onto the extension rod on the corresponding side; The cleaning scraper mechanism includes a scraper mounting plate disposed on the outer circumference of the intermediate rod and a plurality of torsion alloy scrapers mounted on the scraper mounting plate. The scraper mounting plate is provided with a plurality of mounting slots spaced apart, and each mounting slot is provided with a torsion alloy scraper, and the tip of the torsion alloy scraper is adapted to fit against the outer circumference of the roller.

[0009] Optionally, the elastic compensation adjustment seat includes: support; A rubber tensioning assembly includes an outer fixing sleeve that is adjustablely mounted on the bracket, an inner fixing sleeve fitted inside the outer fixing sleeve, a rubber torsion strip disposed in the gap between the outer fixing sleeve and the inner fixing sleeve, and sealing caps that seal both ends of the outer fixing sleeve. One end of the inner fixing sleeve extends to the outside of the outer fixing sleeve, and the rubber torsion strip is interference-fitted with the gap. The torque converter assembly includes a connecting end plate that is sleeved on one side of the inner fixed sleeve at the end away from the outer fixed sleeve, and a sleeve integrally connected through the other side of the connecting end plate. The sleeve is located on the side close to the inner fixed sleeve, and the sleeve is parallel to the central axis of the inner fixed sleeve.

[0010] Optionally, the rubber tensioning assembly further includes sealing caps that seal both ends of the outer fixing sleeve. The sealing caps include end plates adapted to be connected to the ends of the outer fixing sleeve and four pressure strips uniformly and vertically connected to the end plates. The pressure strips are adapted to the cross-sectional shape of the gap, and the ends of the pressure strips are adapted to press against the ends of the rubber torsion strips.

[0011] Optionally, the torsion alloy scraper includes: Torque seat, which is hollow inside; A torsion shaft is inserted into the torsion seat, and both ends of the torsion shaft extend to the outside of the torsion seat and are fixedly connected to the scraper mounting plate. An elastic filler is disposed between the torque shaft and the torque seat; The cutting tool includes a handle mounted on the torque seat and a blade mounted on the handle.

[0012] Optionally, the torque seat and the tool holder are integrally formed.

[0013] Optionally, the torsion alloy scrapers are arranged side by side, and the blades form a straight line on the same horizontal plane.

[0014] Optionally, the two adjacent rows of torque alloy scrapers are staggered, and the blades of the two rows of torque alloy scrapers in each row are on the same horizontal plane.

[0015] Optionally, the blade is an arc-shaped sheet structure made of high-molecular polyurethane.

[0016] Optionally, the cross-section of the rubber torsion strip is cylindrical.

[0017] Optionally, a connecting plate is provided on the side of the U-shaped frame near the intermediate rod, and the connecting plate is threadedly connected to the intermediate rod.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: In the technical solution of this utility model, the permanent magnet drum cleaner includes a connection, two elastic compensation adjustment seats, and a cleaning scraper mechanism. The two extension rods, together with the elastic compensation adjustment seats, are fixed to the frame, making the entire connecting rod a cantilever-simply supported beam structure. The scraper mounting plate is fixed to the scraper mounting plate of the middle rod with bolts, and then multiple torsion alloy scrapers are inserted into the mounting groove one by one and locked with screws. Since the diameter of the end cover is larger than the diameter of the drum, the U-shaped frame straddles both sides of the end cover, which not only limits the axial position but also avoids the rotation space of the end cover. When the drum rotates, the adsorbed ferromagnetic material moves along with the drum surface. The tip of the torsion alloy scraper maintains line contact with the drum to scrape off the ferromagnetic material. During long-term operation, when the scraper wears or the drum surface develops roundness errors, the elastic compensation adjustment seat automatically generates radial displacement, pushing the extension rod to rotate slightly around its axis, driving the entire connecting rod to compensate the permanent magnet drum, ensuring that the scraper always adheres to the drum. The torsion alloy scraper itself has elastic memory; when it momentarily passes over a large protrusion, the scraper can generate a slight twist in the mounting groove to prevent jamming or chipping. After the protrusion passes, it rebounds to its original position due to the torsion of the alloy, continuing to adhere. In this embodiment, the permanent magnet drum cleaner, considering the special structural shape of the permanent magnet drum, uses a specially designed connecting rod and the compensation of the elastic compensation adjustment seat to avoid interference between the ideal installation position of the cleaner and the end caps at both ends of the permanent magnet drum. It also provides compensation force for the scraper, ensuring that the scraper is always installed in the most suitable position, avoiding affecting the performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the sweeper for the permanent magnet drum in an embodiment of this utility model; Figure 2 This is a schematic diagram of the main structure of the permanent magnet drum cleaner in this embodiment of the present invention; Figure 3 This is a side view of the sweeper for a permanent magnet drum according to an embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of the elastic compensation adjustment seat in an embodiment of this utility model; Figure 5 This is a schematic diagram of the main structure of the elastic compensation adjustment seat in an embodiment of this utility model; Figure 6 This is a side view of the elastic compensation adjustment seat in an embodiment of the present invention. Figure 7 This is a top view of the elastic compensation adjustment seat in an embodiment of the present invention. Figure 8 This is a schematic diagram of the structure of the torsion alloy scraper in the embodiment of this utility model.

[0021] Explanation of icon numbers: 1-Connecting rod; 11-Intermediate rod; 12-U-shaped frame; 121-Connecting plate; 13-Extension rod; 2-Elastic compensation adjustment seat; 21-Bracket; 211-Support base; 2111-Strip hole; 212-Side connecting bracket; 2121-Mounting hole; 22-Rubber tensioning assembly; 221-Outer square fixing sleeve; 2211-Base plate; 22111-First locking hole; 222-Inner square fixing sleeve; 223-Rubber torsion strip; 224-Sealing cover; 2241-End plate; 2242-Pressure strip; 23-Torquer assembly; 231-Connecting end plate; 232-Sleeve; 24-First adjusting and fastening assembly; 241-Right angle plate; 242-Nut seat; 243-Second bolt; 25-First fastener; 251-First bolt; 252-Nut; 26-Second adjusting and fastening assembly; 27-Third adjusting and fastening assembly; 3- Sweeping scraper mechanism; 31-Scraper mounting plate; 311-Mounting groove; 32-Torque alloy scraper; 321-Torque seat; 322-Torque shaft; 323-Elastic filler; 324-Cutting tool; 3241-Tool holder; 3242-Blade; 6-Permanent magnet drum; 61-Drum; 62-End cap. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0025] Please see Figure 1-8 As shown, one embodiment of the present invention provides a permanent magnet drum cleaner, which is installed on both sides of the outer circumference of a permanent magnet drum 6. The permanent magnet drum 6 includes a drum 61 and end caps 62 that are symmetrically connected to both ends of the drum 61. The diameter of the end caps 62 is larger than the diameter of the drum 61.

[0026] The permanent magnet roller cleaner includes a connecting rod 1, two elastic compensation adjustment seats 2, and a cleaning scraper mechanism 3, wherein: The connecting rod 1 includes a middle rod 11, two U-shaped frames 12, and two extension rods 13. The middle rod 11 is arranged parallel to the outer circumference generatrix of the roller 61 and is located between the two end caps 62. Each U-shaped frame 12 spans across the two sides of the corresponding end cap 62. The extension rods 13 are located on the outside of the end caps 62. One end of the U-shaped frame 12 is fixedly connected to the end of the middle rod 11, and the other end is fixedly connected to the end of the extension rod 13 near the end cap 62. The U-shaped frames 12 and the extension rods 13 on both sides are symmetrically arranged about the vertical central axis of the middle rod 11, and the two extension rods 13 are coaxially arranged. A scraper mounting plate 31 is provided on the outer circumference of the middle rod 11. Two elastic compensation adjustment seats 2 are respectively sleeved on the extension rods 13 on the corresponding sides; the cleaning scraper mechanism 3 includes a scraper mounting plate 31 and a torsion alloy scraper 32. The scraper mounting plate 31 is set on the outer circumference of the intermediate rod 11. Multiple torsion alloy scrapers 32 are mounted on the scraper mounting plate 31. Multiple mounting grooves 311 are spaced apart on the scraper mounting plate 31. Each mounting groove 311 is provided with a torsion alloy scraper 32, and the tip of the torsion alloy scraper 32 is suitable for fitting against the outer circumference of the roller 61.

[0027] Specifically, in this embodiment, the two extension rods 13 together with the elastic compensation adjustment seat 2 are fixed to the frame (not shown in the figure), so that the entire connecting rod 1 becomes a cantilever-simply supported beam structure; the scraper mounting plate 31 is fixed to the scraper mounting plate 31 of the intermediate rod 11 with bolts, and then multiple torsion alloy scrapers 32 are inserted into the mounting groove 311 one by one and locked with screws; since the diameter of the end cover 62 is larger than the diameter of the roller 61, the U-shaped frame 12 straddles both sides of the end cover 62, which not only limits the axial position, but also avoids the rotation space of the end cover 62.

[0028] When the roller 61 rotates, the adsorbed ferromagnetic material moves along with the surface of the roller 61. The tip of the torsion alloy scraper 32 maintains line contact with the roller 61 to scrape off the ferromagnetic material from the surface of the roller 61. During long-term operation, when the scraper 32 wears or the surface of the roller 61 develops a roundness error, the elastic compensation adjustment seat 2 automatically generates radial displacement, pushing the extension rod 13 to rotate slightly around its axis, driving the entire connecting rod 1 to compensate the permanent magnet roller 6, so as to ensure that the scraper 32 always fits the roller 61. The torsion alloy scraper 32 itself has elastic memory. When a large piece of material protrudes momentarily, the scraper 32 can generate a slight twist in the mounting groove 311 to prevent jamming or chipping. After the protrusion passes, it rebounds to its original position by the torsion of the alloy and continues to fit.

[0029] After stopping the machine, loosen the locking nut of the elastic compensation adjustment seat 2, and the connecting rod 1 can be pulled out as a whole to achieve quick blade change; since the torque alloy scraper 32 is installed in a slot, a single damaged blade can be replaced individually without the need for overall disassembly.

[0030] Therefore, the permanent magnet roller cleaner in this embodiment, combined with the special structural shape of the permanent magnet roller, and through the design of a connecting rod 1 with a specific structure, combined with the compensation of the elastic compensation adjustment seat 2, avoids interference between the ideal installation position of the cleaner and the end caps at both ends of the permanent magnet roller, and can also provide compensation force for the scraper 32, so that the scraper 32 is always installed in the most suitable position, avoiding affecting the use effect.

[0031] For more details, please refer to Figure 4 As shown, the elastic compensation adjustment seat 2 includes a bracket 21, a rubber tensioning assembly 22, and a torque generator assembly 23. The bracket 21 serves as the fixed reference for the entire adjustment seat and is installed on the frame of the permanent magnet roller integrated machine. The rubber tensioning assembly 22 includes an outer fixing sleeve 221, an inner fixing sleeve 222, and a rubber torque strip 223. The outer fixing sleeve 221 is adjustablely installed on the bracket 21 through adjustable structures such as bolts, elongated holes, or sliding grooves, and its position can be finely adjusted along the length of the bracket 21. The inner square fixing sleeve 222 is fitted inside the outer square fixing sleeve 221, forming an annular gap between them; the rubber torsion strip 223 is set in the gap between the outer square fixing sleeve 221 and the inner square fixing sleeve 222, so that the rubber torsion strip 223 is pressed into the gap and an interference fit is generated, forming an "elastic bearing" structure by relying on the elastic force after deformation; one end of the inner square fixing sleeve 222 extends to the outside of the outer square fixing sleeve 221, the rubber torsion strip 223 is interference fitted with the gap, and the inner square fixing sleeve 222 extending to the outside is used to connect with the torque generator assembly 23 to realize torque transmission.

[0032] The torque converter assembly 23 includes a connecting end plate 231 and a sleeve 232. One side of the connecting end plate 231 is sleeved on the end of the inner fixing sleeve 222 away from the outer fixing sleeve 221. The sleeve 232 is integrally connected to the other side of the connecting end plate 231. The sleeve 232 is located on the side close to the inner fixing sleeve 222, and the sleeve 232 is parallel to the central axis of the inner fixing sleeve 222.

[0033] Specifically, in this embodiment, the cleaning scraper mechanism 3 generates resistance on the surface of the roller 61, and then transmits the resistance to the sleeve 232, so that the sleeve 232 is subjected to torque, which is then transmitted sequentially to the connecting end plate 231, the inner fixed sleeve 222 and the rubber torsion strip 223. The rubber torsion strip 223 undergoes shear / torsional elastic deformation, and the rubber generates a rebound torque, which reacts to the cleaning scraper mechanism 3, so that the cleaning scraper mechanism 3 is always in close contact with the surface of the roller 61.

[0034] When there are undulations on the surface of roller 61 or changes in the thickness of the adhesive, the resistance fluctuations will cause the rubber torsion strip 223 to adjust the torque in real time through elastic deformation, thus avoiding rigid impact.

[0035] If overall adjustment of preload is required: loosen the connecting bolts between bracket 21 and outer fixing sleeve 221, change the initial installation angle or height of outer fixing sleeve 221, and the initial torsion angle of rubber torsion strip 223 can be changed to achieve "stepless" elasticity adjustment.

[0036] Therefore, the shear deformation of the rubber torsion strip 223 can respond instantaneously to changes in resistance, achieving "elastic floating" and avoiding uneven pressure caused by resonance or fatigue in traditional helical springs.

[0037] For more details, please refer to Figure 4 As shown, the rubber tensioning assembly 22 also includes sealing caps 224 that seal both ends of the outer fixing sleeve 221. In a preferred embodiment of this embodiment, the sealing cap 224 includes an end plate 2241 and pressure strips 2242. The end plate 2241 is adapted to be connected to the end of the outer fixing sleeve 221. Four pressure strips 2242 are evenly and vertically connected to the end plate 2241, and the pressure strips 2242 are adapted to the cross-sectional shape of the gap. The end of the pressure strip 2242 is adapted to press against the end of the rubber torsion strip 223.

[0038] In this embodiment, the sealing cap 224 seals both ends of the outer fixing sleeve 221. This prevents dust and moisture from entering the gap and affecting the operation of the rubber torsion strip 223, thus avoiding rubber aging. It also prevents the rubber torsion strip 223 from slipping out of the gap during long-term friction. The sealing cap 224, combined with the interference fit, forms a labyrinth + compression double seal, preventing dust from entering the gap and reducing rubber aging. At the same time, the rubber torsion strip 223 is in a closed cavity, free from ultraviolet radiation and ozone corrosion, increasing its lifespan by 2-3 times compared to an exposed elastic torsion strip.

[0039] For more details, please refer to Figure 8 As shown, the torque alloy scraper 32 includes a torque seat 321, a torque shaft 322, an elastic filler 323, and a cutter 324, wherein: The interior of the torque seat 321 is hollow; the torque shaft 322 is inserted into the torque seat 321, and both ends of the torque shaft 322 extend to the outside of the torque seat 321 and are fixedly connected to the scraper mounting plate 31; the elastic filler 323 is disposed between the torque shaft 322 and the torque seat 321; the cutter 324 includes a handle 3241 and a blade 3242, the handle 3241 is disposed on the torque seat 321, and the blade 3242 is disposed on the handle 3241.

[0040] In this embodiment, when the blade 3242 is subjected to an instantaneous impact from the material on the surface of the roller 61, the torque shaft 322 is slightly twisted in the torque seat 321, thereby causing the elastic filler 323 (rubber / polyurethane, etc.) to produce a recoverable elastic deformation. The elastic filler 323 absorbs and disperses the impact energy, preventing the blade 3242 and the handle 3241 from rigidly breaking or loosening.

[0041] Thus, the circumferential compressibility of the elastic filler 323 provides the tool 324 with a "passive floating" degree of freedom, improving the quality of cleaning / scraping operations and reducing local wear or failure caused by rigid fixing.

[0042] For more details, please refer to Figure 3 , 8 As shown, the torque seat 321 and the tool holder 3241 are integrally formed. This integral forming eliminates the separate connection interface (such as threads, snaps or welds) between the torque seat 321 and the tool holder 3241, avoiding loosening, fatigue cracks or fretting wear caused by long-term torsional vibration.

[0043] For more details, please refer to Figure 1 As shown, the torsion alloy scrapers 32 are arranged side by side, and the blades 3242 form a straight line on the same horizontal plane.

[0044] In some embodiments, N torsion alloy scrapers 32 are arranged equidistantly along a transverse axis perpendicular to the forward direction, and the lower cutting edges of all blades 3242 are milled or ground flat by a tooling in one go to ensure coplanarity.

[0045] When the drum 61 rotates, each blade 3242 first contacts the surface of the drum 61 at the same height. The torsion shaft 322 generates an equal amount of torsion in the torsion seat 321, causing the elastic packing 323 to undergo the same amount of compression, which in turn causes the blades 3242 to produce consistent micro-float in the same horizontal plane.

[0046] Thus, by arranging multiple torsion alloy scrapers 32 in a "side-by-side and co-linear" manner, multiple torsion alloy scrapers 32 are integrated into a "wide straight scraping unit". Through one-time coplanar processing and synchronous floating mechanism, there are no gaps between adjacent torsion alloy scrapers 32. This not only solves the problem of material leakage, but also achieves the comprehensive technical effects of full coverage, low wear, low energy consumption and easy maintenance.

[0047] In other embodiments, adjacent two-stage torsion alloy scrapers 32 are staggered, and the blades 3242 of each row of two-stage torsion alloy scrapers 32 are on the same horizontal plane.

[0048] For example, two adjacent torsion alloy scrapers 32 are offset by ΔL (ΔL < blade length L) along the generatrix of the roller surface, maintaining zero gap laterally; the cutting edges of the two blades 3242 in each row are ground flat in the same horizontal plane at once to ensure coplanarity, so that the boundary layer is broken off by the front blade first, and then the rear blade performs fine scraping.

[0049] For more details, please refer to Figure 8As shown, the blade 3242 is an arc-shaped sheet structure made of high-molecular polyurethane. Through its elastic deformation and floating adjustment mechanism, the service life, cleaning efficiency and operation stability of the torsion alloy scraper 32 are significantly improved.

[0050] For more details, please refer to Figure 2 As shown, a connecting plate 121 extends from the side of the U-shaped frame 12 near the intermediate rod 11. The connecting plate 121 is threadedly connected to the intermediate rod 11. This connection method significantly improves the connection strength and stability between the U-shaped frame 12 and the intermediate rod 11, reduces the risk of loosening or falling off due to external forces, and ensures the reliability of the equipment during operation.

[0051] Specifically, please refer to Figure 4 , Figure 5 , Figure 6 As shown, in some embodiments, the bracket 21 includes an integrally vertically connected support base 211 and a side connecting frame 212, with the side connecting frame 212 located at the bottom end of the support base 211; the support base 211 has a strip-shaped hole 2111 extending along the length direction, and the bottom of the outer fixing sleeve 221 is fixedly connected to a base plate 2211, which is adjustablely mounted on the support base 211 through the strip-shaped hole 2111.

[0052] Specifically, in this embodiment, the bracket 21 is composed of a support base 211 and a side connecting frame 212, which are vertically connected in an "L" shape; the support base 211 is used to support the overall adjustment seat; the side connecting frame 212 is used to assist in installation.

[0053] When the base plate 2211 of the outer fixing sleeve 221 is placed on the support base 211, the bolt is passed through the strip hole 2111 and then locked by the pre-tightening nut, but not completely locked; push and pull the outer fixing sleeve 221 along the direction of the strip hole 2111 (i.e. the length direction of the support base 211) to change its installation position, thereby changing the horizontal distance or angle between the cleaning scraper and the center line of the belt; after the position is determined, tighten the nut to complete the positioning.

[0054] Therefore, by replacing the traditional perforated plate with the strip hole 2111 and the base plate 2211, continuous adjustment can be made within a certain range to compensate for the offset of the cleaning area caused by belt misalignment; for belt conveyors with different bandwidths or different roller center distances, no additional drilling is required, thus improving versatility.

[0055] Specifically, please refer to Figure 4 , 5As shown, in some embodiments, the base plate 2211 has first locking holes 22111 on both sides of the outer fixing sleeve 221, corresponding to the positions of the strip hole 2111. First fasteners 25 are connected through the first locking holes 22111 and the strip hole 2111 to fix the outer fixing sleeve 221 on the support base 211.

[0056] During assembly, first place the outer fixing sleeve 221 on the support base 211, and the first fastener 25 passes through the strip hole 2111 and the first locking hole 22111. The first fastener 25 is pre-tightened (not locked), and then the outer fixing sleeve 221 is slid horizontally along the direction of the strip hole 2111 to the desired position. Finally, the first fastener 25 is tightened to complete the positioning and clamping.

[0057] Specifically, please refer to Figure 5 , 6 As shown, in some embodiments, the first fastener 25 is a first bolt 251 passing through the first locking hole 22111 and the strip hole 2111, and a nut 252 threadedly connected to the first bolt 251.

[0058] Specifically, please refer to Figure 4 , 5 As shown, in some other embodiments, the elastic compensation adjustment seat 2 further includes a first adjustment fastening component 24 for adjusting the displacement of the rubber tensioning component 22, the first adjustment fastening component 24 being adapted to adjust the position of the rubber tensioning component 22 on the support base 211 when the first fastener 25 is loosened.

[0059] When the first bolt 251 is loosened, the friction lock between the base plate 2211 and the support base 211 is released, and the base plate 2211 can slide freely along the direction of the strip hole 2111.

[0060] Specifically, please refer to Figure 5 As shown, the first adjusting and fastening assembly 24 includes a right-angle plate 241, two nut seats 242, and a second bolt 243, wherein: The bottom of the right-angle plate 241 is fixedly connected to the upper surface of the support base 211; two nut seats 242 are symmetrically connected to the two sides of the top of the right-angle plate 241 and form coaxial threaded holes to ensure that the axis of the second bolt 243 is consistent with the direction of the strip hole 2111; the second bolt 243 is threaded through the two nut seats 242 and the right-angle plate 241, and the second bolt 243 is adapted to be vertically pressed against the outer surface of the outer fixing sleeve 221.

[0061] Specifically, please refer to Figure 6 As shown, the elastic compensation adjustment seat 2 also includes several second adjustment and fastening components 26 and several third adjustment and fastening components 27, wherein: Several second adjusting fastening components 26 are evenly distributed on the outer peripheral wall of the inner fixed sleeve 222 located between the connecting end plate 231 and the outer fixed sleeve 221; a torsion bar is suitable to be inserted into the inner fixed sleeve 222, and the second adjusting fastening components 26 are suitable to press against the torsion bar to fix the torsion bar and the inner fixed sleeve 222. Several third adjusting fastening components 27 are installed on the top and side walls of the sleeve 232. The sleeve 232 is adapted to have a base tube inserted inside. The third adjusting fastening components 27 are adapted to press vertically against the outer circumference of the base tube.

[0062] Specifically, the torsion bar is inserted into the inner fixing sleeve 222, and then each of the second adjusting fastening components 27 is tightened so that the screw ends radially press against the outer circumference of the torsion bar to form multi-point clamping; the preload at each point is adjustable, which ensures coaxiality and prevents axial movement.

[0063] Insert the base tube into the sleeve 232, and then tighten each of the third adjusting fastening components 27 so that the screw ends press vertically against the outer circumference of the base tube to achieve quick centering, positioning and clamping; loosening allows the base tube to slide or rotate axially, making it easy to replace the scraper.

[0064] The second adjusting fastening component 26 has multi-point adjustable clamping, which eliminates the gap of the traditional keyway fit, so that the torsion bar and the inner fixed sleeve 222 form a "backlash-free" connection, and the cleaning torque response is lag-free and the fit is more uniform; the third adjusting fastening component 27 has a three-point self-centering structure that ensures that the coaxiality of the base tube and the sleeve 232 is ≤ 0.05 mm, and the radial runout is reduced by 50% during operation, reducing the vibration of the cleaning blade edge and belt wear.

[0065] Specifically, please refer to Figure 5 As shown, the cross-section of the rubber torsion strip 223 is cylindrical. The outer diameter D of the rubber torsion strip 223 is slightly larger than the annular gap between the outer fixing sleeve 221 and the inner fixing sleeve 222, forming an interference fit; the cylindrical cross-section has no sharp edges, and when compressed during assembly, it can generate uniform radial compressive stress in the 360° circumference, achieving "full circumference" sealing and positioning.

[0066] Specifically, please refer to Figure 1 As shown, mounting holes 2121 are provided on both sides of the side connecting frame 212. The side connecting frame 212 is fixedly connected to the external platform through the mounting holes 2121 and screws passing through the mounting holes 2121.

[0067] Specifically, please refer to Figure 5 As shown, both the second adjusting fastening assembly 26 and the third adjusting fastening assembly 27 are provided in pairs.

[0068] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cleaner for a permanent magnet drum, mounted on both sides of the outer circumference of a permanent magnet drum (6), the permanent magnet drum (6) comprising a drum (61) and end caps (62) symmetrically connected to both ends of the drum (61), the diameter of the end caps (62) being larger than the diameter of the drum (61), characterized in that, include: The connecting rod (1) includes an intermediate rod (11) arranged parallel to the outer circumference generatrix of the roller (61) and located between the two end caps (62), a U-shaped frame (12) spanning both sides of the end caps (62), and an extension rod (13) located outside the end caps (62). One end of the U-shaped frame (12) is fixedly connected to the end of the intermediate rod (11), and the other end is fixedly connected to the end of the extension rod (13) near the end cap (62). The U-shaped frames (12) and the extension rods (13) on both sides are symmetrically arranged about the vertical central axis of the intermediate rod (11), and the two extension rods (13) are coaxially arranged. A scraper mounting plate (31) is provided on the outer circumference of the intermediate rod (11). Two elastic compensation adjustment seats (2) are respectively fitted onto the extension rod (13) on the corresponding side; The cleaning scraper mechanism (3) includes a scraper mounting plate (31) disposed on the outer circumference of the intermediate rod (11) and a plurality of torsion alloy scrapers (32) mounted on the scraper mounting plate (31). The scraper mounting plate (31) is provided with a plurality of mounting grooves (311) spaced apart. Each mounting groove (311) is provided with a torsion alloy scraper (32), and the tip of the torsion alloy scraper (32) is adapted to fit against the outer circumference of the roller (61).

2. The sweeper for a permanent magnet drum according to claim 1, characterized in that, The elastic compensation adjustment seat (2) includes: Support (21); The rubber tensioning assembly (22) includes an outer fixing sleeve (221) adjustablely mounted on the bracket (21), an inner fixing sleeve (222) fitted inside the outer fixing sleeve (221), a rubber torsion strip (223) disposed in the gap between the outer fixing sleeve (221) and the inner fixing sleeve (222), and sealing caps (224) sealing both ends of the outer fixing sleeve (221). One end of the inner fixing sleeve (222) extends to the outside of the outer fixing sleeve (221), and the rubber torsion strip (223) is interference-fitted with the gap. The torque generator assembly (23) includes a connecting end plate (231) sleeved on one side of the inner fixed sleeve (222) away from the outer fixed sleeve (221) and a sleeve (232) integrally connected through the other side of the connecting end plate (231). The sleeve (232) is located on the side close to the inner fixed sleeve (222) and the sleeve (232) is parallel to the central axis of the inner fixed sleeve (222).

3. The sweeper for a permanent magnet drum according to claim 2, characterized in that, The rubber tensioning assembly (22) further includes sealing caps (224) that seal both ends of the outer fixing sleeve (221). The sealing caps (224) include end plates (2241) adapted to be connected to the ends of the outer fixing sleeve (221) and four pressure strips (2242) uniformly and vertically connected to the end plates (2241). The pressure strips (2242) are adapted to the cross-sectional shape of the gap. The ends of the pressure strips (2242) are adapted to press against the ends of the rubber torsion strip (223).

4. The sweeper for a permanent magnet drum according to claim 1, characterized in that, The torsion alloy scraper (32) includes: Torque seat (321), which is hollow inside; Torque shaft (322) is inserted into torque seat (321), and both ends of torque shaft (322) extend to the outside of torque seat (321) and are fixedly connected to scraper mounting plate (31); An elastic filler (323) is disposed between the torque shaft (322) and the torque seat (321); The cutting tool (324) includes a handle (3241) disposed on the torque seat (321) and a blade (3242) disposed on the handle (3241).

5. The permanent magnet drum cleaner according to claim 4, characterized in that, The torque seat (321) and the tool holder (3241) are integrally formed.

6. The sweeper for a permanent magnet drum according to claim 4, characterized in that, The torsion alloy scrapers (32) are arranged side by side, and the blades (3242) form a straight line on the same horizontal plane.

7. The sweeper for a permanent magnet drum according to claim 5, characterized in that, The two adjacent torsional alloy scrapers (32) are staggered, and the blades (3242) of the two torsional alloy scrapers (32) in each row are on the same horizontal plane.

8. The sweeper for a permanent magnet drum according to claim 4, characterized in that, The blade (3242) is an arc-shaped sheet structure made of high-molecular polyurethane.

9. The sweeper for a permanent magnet drum according to claim 2, characterized in that, The cross-section of the rubber torsion bar (223) is cylindrical.

10. The sweeper for a permanent magnet drum according to claim 1, characterized in that, A connecting plate (121) extends from the side of the U-shaped frame (12) near the middle rod (11), and the connecting plate (121) is threadedly connected to the middle rod (11).

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