Magnetic separation device and electromagnetic iron removal apparatus

Abstract

The utility model discloses a magnetic separation device and electromagnetic iron removal equipment. The magnetic separation device comprises a mounting shaft, a baffle ring and a magnetic medium net assembly. The mounting shaft is used for being mounted on the shell of the electromagnetic iron removal equipment, and the shell is provided with an iron removal cavity. The baffle ring is sleeved on the outer side of the mounting shaft. The magnetic medium net assembly comprises a plurality of magnetic medium nets, the plurality of magnetic medium nets are sleeved on the outer side of the mounting shaft, and are arranged and disposed with the baffle ring in the axial direction of the mounting shaft. The radial dimension of the baffle ring in the radial direction of the mounting shaft is greater than the radial dimension of the magnetic medium net in the radial direction of the mounting shaft, and is used for plugging the gap formed by the magnetic medium net and the inner side wall of the iron removal cavity in the radial direction of the mounting shaft, thereby reducing the risk of metal debris generated by scratching between the magnetic medium net and the inner side wall of the iron removal cavity, reducing the maintenance cost of the magnetic separation device, improving the quality of the material and the use safety of the battery, avoiding the problem that the material directly escapes from the gap without passing through the magnetic medium net, and improving the material screening quality and the screening reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of material screening, and in particular to a magnetic separation device and an electromagnetic iron removal device. Background Technology

[0002] The edges of the magnetic mesh in electromagnetic iron removal equipment are sharp after processing. As a result, during the disassembly or installation of the magnetic mesh, it is easy for the magnetic mesh to rub against the inner wall of the iron removal chamber and generate metal debris. This increases the maintenance cost of the electromagnetic iron removal equipment, reduces the quality of materials, and can easily lead to safety hazards such as battery self-discharge and short circuits. Utility Model Content

[0003] In view of this, one objective of this utility model is to provide a magnetic separation device and an electromagnetic iron removal equipment to solve the technical problems in the prior art where the magnetic mesh of the electromagnetic iron removal equipment easily scrapes against the inner wall of the iron removal chamber and generates metal debris during the disassembly or installation of the magnetic mesh, thereby increasing the maintenance cost of the electromagnetic iron removal equipment, reducing the quality of materials, and easily leading to safety hazards such as battery self-discharge and short circuits.

[0004] This utility model provides a magnetic separation device, including a mounting shaft, a retaining ring, and a magnetic mesh assembly. The mounting shaft is used to install on the housing of an electromagnetic iron removal device, and the housing is provided with an iron removal chamber. The retaining ring is sleeved on the outside of the mounting shaft. The magnetic mesh assembly includes multiple magnetic meshes, which are sleeved on the outside of the mounting shaft and arranged with the retaining ring in the axial direction of the mounting shaft. The radial dimension of the retaining ring in the radial direction of the mounting shaft is larger than the radial dimension of the magnetic mesh in the radial direction of the mounting shaft, and it is used to seal the gap formed between the magnetic mesh and the inner wall of the iron removal chamber in the radial direction of the mounting shaft.

[0005] In one possible implementation, two adjacent magnetic meshes are arranged in a staggered manner in a projection plane perpendicular to the axial direction of the mounting axis.

[0006] In one possible implementation, each of the magnetic meshes includes a positioning sleeve and a screen body. The positioning sleeve is fitted onto the outer side of the mounting shaft, and the screen body is fitted onto the outer side wall of the positioning sleeve. The positioning sleeve is provided with a positioning part, and the two positioning parts of two adjacent magnetic meshes are nested to restrict the relative rotation of the two adjacent magnetic meshes in the circumferential direction of the mounting shaft.

[0007] In one possible implementation, the retaining ring includes a first ring body, a second ring body, and a support rod. The first ring body is located inside the second ring body and is sleeved on the outside of the mounting shaft. The second ring body seals the gap. The support rod is connected between the first ring body and the second ring body. The first ring body is provided with a limiting part, which is nested with the positioning part to restrict the relative rotation of adjacent retaining rings and magnetic mesh in the circumferential direction of the mounting shaft.

[0008] In one possible implementation, the retaining ring is configured as a non-metallic structure; or, the surface of the retaining ring is provided with a non-metallic coating.

[0009] In one possible implementation, the retaining ring is provided with a chamfer, which is set at an angle relative to the central axis of the mounting shaft and is used to guide the material on the retaining ring to move along the material conveying direction.

[0010] In one possible implementation, the retaining ring has a plurality of material dropping holes in the axial direction of the mounting shaft, and the retaining ring has a chamfer around the perimeter of each material dropping hole; the chamfer includes at least one of a first chamfer, a second chamfer, and a third chamfer; the retaining ring includes a first ring body, a second ring body, and a support rod; the first ring body is located inside the second ring body and is sleeved on the outside of the mounting shaft; the second ring body seals the gap; the support rod connects the first ring body and the second ring body; the first ring body has the first chamfer facing the outer sidewall of the second ring body; the second ring body has the second chamfer facing the inner sidewall of the first ring body; and the support rod has the third chamfer on at least one of the two sidewalls in the circumferential direction of the mounting shaft.

[0011] In one possible implementation, the mounting shaft includes a shaft body, a stop block, and a clamping head. The stop block is fixed to one end of the shaft body, and the clamping head is detachably fixed to the other end of the shaft body. The retaining ring and a plurality of magnetic meshes are pressed between the clamping head and the stop block in the axial direction of the mounting shaft.

[0012] In one possible implementation, the magnetic mesh assembly includes multiple magnetic mesh groups, each magnetic mesh group including one or more magnetic meshes, and the number of retaining rings is set to multiple, including a first retaining ring and a second retaining ring. The first retaining ring is disposed between two adjacent magnetic mesh groups, and the second retaining ring is disposed upstream of all magnetic mesh groups in the material conveying direction.

[0013] The magnetic separation device and electromagnetic iron removal equipment provided by this utility model, on the one hand, are based on setting multiple magnetic meshes and arranging them with retaining rings in the axial direction of the mounting shaft. The radial dimension of the retaining rings in the radial direction of the mounting shaft is larger than that of the magnetic meshes in the radial direction of the mounting shaft. This reduces the risk of metal debris being generated due to friction between the magnetic meshes and the inner wall of the iron removal chamber when disassembling or assembling the magnetic mesh assembly, thereby reducing the maintenance cost of the magnetic separation device, improving the quality of materials, and improving the safety of battery use. On the other hand, by setting the retaining rings to seal the gap formed between the magnetic meshes and the inner wall of the iron removal chamber in the radial direction of the mounting shaft, the problem of materials escaping directly through the gaps without passing through the magnetic meshes is prevented, thereby improving the screening quality and screening reliability of materials. Attached Figure Description

[0014] 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 these drawings without creative effort.

[0015] Figure 1 This is a partial cross-sectional view of the electromagnetic iron removal device provided in this embodiment of the utility model.

[0016] Figure 2 This is a schematic diagram of the magnetic separation device of the electromagnetic iron removal equipment provided in the first embodiment of this utility model.

[0017] Figure 3 yes Figure 2 A magnified first-view view of the magnetic mesh of the magnetic separator in the image.

[0018] Figure 4 yes Figure 2 A magnified view from a second perspective of the magnetic separator mesh in the magnetic separation device.

[0019] Figure 5 yes Figure 2 A magnified first-view view of the retaining ring of the magnetic separator.

[0020] Figure 6 yes Figure 2 A magnified view from a second perspective of the retaining ring of the magnetic separator.

[0021] Figure 7 yes Figure 2 An enlarged view of the mounting shaft of the magnetic separator in the image.

[0022] Figure 8 This is a schematic diagram of the magnetic separation device of the electromagnetic iron removal equipment provided in the second embodiment of this utility model.

[0023] Main reference numerals: Electromagnetic iron removal device - 1000; Housing - 100; Iron removal chamber - 1001; Receiving cavity - 1002; Excitation module - 200; Magnetic separator - 300; Mounting shaft - 10; Shaft body - 11; Stop block - 12; Clamping head - 13; Retaining ring - 20; Material discharge hole - 201; First retaining ring - 202; Second retaining ring - 203; First ring body - 21; Second ring body - 22; Connecting rod - 23; Limiting part - 24; Limiting groove - 241; Limiting protrusion - 242; Chamfer - 25; First chamfer - 251; Second chamfer - 252; ... Three chamfers - 253; Magnetic mesh assembly - 30; Gap - 301; Magnetic mesh - 31; Magnetic mesh group - 310; Positioning sleeve - 311; Positioning part - 3110; Positioning groove - 3111; Positioning protrusion - 3112; Screen body - 312; Support rod - 3121; Screen rod - 3122; Screening channel - 3123; First screen rod - 3124; Second screen rod - 3125; First guide surface - 3126; Second guide surface - 3127; Axial direction - X; Radial direction - Y; Circumferential direction - Z; Central axis - P; First included angle - α; Second included angle - β.

[0024] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0025] 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 scope of protection of the present utility model.

[0026] It is understood that the terminology in the specification, claims, and accompanying drawings of this utility model is for describing specific embodiments only and is not intended to limit the utility model. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Unless the context clearly states otherwise, the singular forms "a" and "described" are also intended to include the plural forms. The term "comprising," and any variations thereof, are intended to cover non-exclusive inclusion. Furthermore, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of this utility model, wherein terms indicating direction such as up, down, left, and right refer only to the position of the illustrated structure in the corresponding drawings. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set on" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The following description describes preferred embodiments of the present invention; however, the foregoing description is intended to illustrate the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the appended claims.

[0028] Please see Figure 1 , Figure 1 This is a partial cross-sectional view of the electromagnetic iron removal device 1000 provided in this embodiment of the present invention. The electromagnetic iron removal device 1000 includes a housing 100 and a magnetic separator 300. The housing 100 is provided with an iron removal chamber 1001. The magnetic separator 300 is disposed within the iron removal chamber 1001. The magnetic separator 300 is used to remove ferromagnetic objects from the material, thereby improving the quality of the material and enhancing the safety of battery use.

[0029] It should be noted that the electromagnetic iron removal device 1000 refers to a device that uses electromagnetic force to remove ferromagnetic impurities from materials. Exemplarily, in this embodiment, at least a portion of the structure of the magnetic separator 300 is made of a magnetically sensitive material. A magnetically sensitive material is a material that can respond to an external magnetic field and generate magnetization or magnetic induction.

[0030] Exemplarily, in this embodiment, the electromagnetic iron removal device 1000 further includes an excitation module 200. The housing 100 also has a receiving cavity 1002. The receiving cavity 1002 is isolated from the iron removal cavity 1001. The excitation module 200 is installed within the receiving cavity 1002. The working principle of the electromagnetic iron removal device 1000 is as follows: when the excitation module 200 is energized, current flows through the excitation module 200, and the excitation module 200 generates a magnetic field. The structure made of magnetically sensitive material in the magnetic separator 300 achieves electromagnetic induction under the action of the magnetic field generated by the excitation module 200. Therefore, the structure made of magnetically sensitive material in the magnetic separator 300 can capture and remove ferromagnetic objects from the material, thereby ensuring product quality and protecting the safety of downstream equipment. Ferromagnetic objects include, but are not limited to, metal impurities such as iron filings, nails, and bolts.

[0031] For example, in this embodiment, the material can be a battery material. Battery materials include various materials, such as, but not limited to, solvents, conductive agents, liquids, solids, or powders, etc., which are mixed to form the battery material. In this embodiment, the material is illustrated as a battery material; however, it is understood that the material can also be other materials, such as food, medicine, fertilizer, building materials, etc., and the category of the material is not limited here.

[0032] It should be noted that, Figure 1 The purpose is only to schematically describe the arrangement of the magnetic separator 100, the excitation module 200 and the magnetic separator 300, and is not to make specific limitations on the connection position, connection relationship and specific structure of each component. Figure 1 This illustration of the electromagnetic iron removal device 1000 is merely a structural representation of an embodiment of the present invention and does not constitute a specific limitation on the electromagnetic iron removal device 1000. In other embodiments of the present invention, the electromagnetic iron removal device 1000 may include components that are more... Figure 1 The electromagnetic separator 1000 may include, but is not limited to, a temperature sensor, a constant current control module, and connecting wiring harnesses, etc., with more or fewer components, or combinations of certain components, or different components. By introducing refrigerant into the accommodating cavity 1002 and allowing the refrigerant to permeate the excitation module 200, the refrigerant can adequately cool the excitation module 200, preventing it from burning out during power-on, thus improving the service life of the excitation module 200 and the stability of the magnetic field generated by the excitation module 200.

[0033] Please refer to the following: Figure 1 and Figure 2 , Figure 2This is a schematic diagram of the magnetic separation device 300 of the electromagnetic iron removal equipment 1000 provided in the first embodiment of this utility model. The magnetic separation device 300 includes a mounting shaft 10, a retaining ring 20, and a magnetic mesh assembly 30. The mounting shaft 10 is used to install on the housing 100 of the electromagnetic iron removal equipment 1000, and the housing 100 is provided with an iron removal cavity 1001. The retaining ring 20 is sleeved on the outside of the mounting shaft 10. The magnetic mesh assembly 30 includes a plurality of magnetic meshes 31, which are sleeved on the outside of the mounting shaft 10 and arranged with the retaining ring 20 in the axial direction X of the mounting shaft 10. The radial dimension of the retaining ring 20 in the radial direction Y of the mounting shaft 10 is larger than the radial dimension of the magnetic meshes 31 in the radial direction Y of the mounting shaft 10, and is used to seal the gap 301 formed between the magnetic meshes 31 and the inner wall of the iron removal cavity 1001 in the radial direction Y of the mounting shaft 10.

[0034] The magnetic separator 300 provided by this utility model has two advantages. First, it is based on the arrangement of multiple magnetic meshes 31 and retaining rings 20 in the axial direction X of the mounting shaft 10. The radial dimension of the retaining rings 20 in the radial direction Y of the mounting shaft 10 is larger than that of the magnetic meshes 31 in the radial direction Y of the mounting shaft 10. This reduces the risk of metal debris being generated due to friction between the magnetic meshes 31 and the inner wall of the iron removal chamber 1001 when disassembling or assembling the magnetic mesh assembly 30. This reduces the maintenance cost of the magnetic separator 300, improves the quality of the material, and enhances the safety of battery use. Second, it is based on the retaining rings 20 sealing the gap 301 formed between the magnetic meshes 31 and the inner wall of the iron removal chamber 1001 in the radial direction Y of the mounting shaft 10. This prevents the material from escaping directly through the gap 301 without passing through the magnetic meshes 31, thereby improving the material screening quality and screening reliability.

[0035] The mounting shaft 10 has a central axis P. The mounting shaft 10 is movably mounted on the housing 100. In some embodiments, the electromagnetic iron removal device 1000 further includes a vibration device mounted on the housing 100 and connected to the mounting shaft 10, thereby improving the screening effect of the magnetic separator 300 on materials.

[0036] For the sake of accuracy, all references to direction in this article should be expressed in terms of direction. Figure 1For reference, the term "axial direction X" as used in the embodiments and claims herein refers to the direction parallel to the central axis P of the mounting shaft 10, wherein the extension direction of the X-axis is the up-down direction (where the positive direction of the X-axis is up); the term "radial direction Y" refers to the direction perpendicular to the central axis P of the mounting shaft 10, i.e., along the radial direction of the cross-section of the excitation module 200, wherein the extension direction of the Y-axis is the left-right direction (where the positive direction of the Y-axis is right); the term "circumferential direction Z" refers to the circumferential direction of the excitation module 200, i.e., the direction surrounding the central axis P of the mounting shaft 10. The axial direction X, radial direction Y, and circumferential direction Z together constitute the three orthogonal directions of the excitation module 200. For ease of description, the up-down, left-right, and front-back orientations in this utility model are relative positions and do not constitute a limitation. The axial direction X, radial direction Y, and circumferential direction of the mounting shaft 10 can be customized according to the specific structure of the product and the perspective presented in the accompanying drawings, and this utility model does not impose specific limitations.

[0037] In this embodiment, adjacent magnetic meshes 31 are staggered in the projection plane of the axial direction X perpendicular to the mounting shaft 10. Therefore, by staggering the magnetic meshes 31, on the one hand, the multiple staggered magnetic meshes 31 can make the magnetic lines of force more evenly distributed, reduce "blind spots," and force the material to change direction when passing through the magnetic meshes 31, increasing the contact time and area with the magnetic field, thereby improving the adsorption capacity of magnetic substances in the material and enhancing the screening effect; on the other hand, the staggered arrangement can prevent the material from directly impacting the same position vertically, dispersing the flow pressure, preventing impurities from accumulating in a single area, thereby improving the smoothness and reliability of material conveying, and dispersing the impact point of the material at different positions of each layer of magnetic meshes 31, avoiding localized continuous wear and extending the overall lifespan of the magnetic mesh assembly 30.

[0038] Please refer to the following: Figure 1 , Figure 2 and Figure 3 , Figure 3 yes Figure 2 A magnified first-view view of the magnetic mesh 31 of the magnetic separator 300. Figure 4 yes Figure 2The image shows an enlarged second-view view of the magnetic mesh 31 of the magnetic separator 300. Each magnetic mesh 31 includes a positioning sleeve 311 and a screen body 312. The positioning sleeve 311 is fitted onto the outer side of the mounting shaft 10. The screen body 312 is fitted onto the outer side wall of the positioning sleeve 311. The positioning sleeve 311 is provided with a positioning part 3110. The two positioning parts 3110 of two adjacent magnetic meshes 31 are nested to restrict the relative rotation of the two adjacent magnetic meshes 31 in the circumferential direction Z of the mounting shaft 10. Therefore, on the one hand, the two positioning parts 3110 are nested, thus eliminating the need for additional locking structures such as keys and pins, avoiding the problem of loosening of the locking structure between the magnetic mesh assembly 30 and the retaining ring 20 during vibration, and preventing wear and debris generation between the locking structure and the magnetic mesh 31; on the other hand, the multiple magnetic meshes 31 are relatively fixed in the circumferential direction Z, so that the relative included angle between the multiple magnetic meshes 31 is fixed, ensuring the contact area between the material and the magnetic mesh 31 when the material is falling, and improving the screening effect of the material; furthermore, the multiple magnetic meshes 31 are relatively fixed in the circumferential direction Z, thereby preventing frequent changes in the polarity of the magnetic field caused by the rotation of the magnetic mesh 31, maintaining the consistent direction of the magnetic field, and ensuring the adsorption efficiency and adsorption stability of the magnetic substances in the material.

[0039] Specifically, the positioning part 3110 includes a plurality of positioning grooves 3111 and a plurality of positioning protrusions 3112. The plurality of positioning grooves 3111 and the plurality of positioning protrusions 3112 are arranged at intervals along the circumferential direction Z of the mounting shaft 10. The plurality of positioning grooves 3111 and the plurality of positioning protrusions 3112 are alternately spaced along the circumferential direction Z of the mounting shaft 10. The slotting direction of two adjacent positioning grooves 3111 in the radial direction Y of the mounting shaft 10 forms a first included angle α. The first included angle α can be, but is not limited to, 45°, 60°, 90°, or 120°, etc. The nested arrangement of two adjacent positioning parts 3110 in the axial direction X of the mounting shaft 10 means that the positioning groove 3111 of one positioning sleeve 311 cooperates with the positioning protrusion 3112 of the other positioning sleeve 311, so that the multiple magnetic meshes 31 are relatively fixed in the circumferential direction Z, thereby preventing the magnetic meshes 31 from rotating and causing frequent changes in magnetic field polarity, maintaining the magnetic field direction in a consistent manner, and ensuring the adsorption efficiency and adsorption stability of magnetic substances in the material.

[0040] The screen body 312 and the positioning sleeve 311 can be non-detachably fixed together by welding, integral molding, or other methods, thereby improving the reliability and stability of the connection between the screen body 312 and the positioning sleeve 311, and avoiding the generation of metal shavings and preventing the structure from loosening. In this embodiment, the screen body 312 can be made of stainless steel. Of course, in some embodiments, the screen body 312 can also be made of other magnetically conductive materials. Of course, in some embodiments, the screen body 312 and the positioning sleeve 311 can also be detachably fixed together by snap-fit ​​or locking structures, etc., and this embodiment of the present invention does not make specific limitations.

[0041] The screen body 312 includes a support rod 3121 and multiple screen rods 3122. The multiple screen rods 3122 are spaced apart and form a screening channel 3123. The support rod 3121 is fixedly connected to all the screen rods 3122 and is arranged in the axial direction X of the mounting shaft 10. The screen rods 3122 are provided with guide slopes. The guide slopes are set at an angle relative to the central axis P of the mounting shaft 10 and are used to guide the material on the screen rods 3122 to move along the material conveying direction.

[0042] The distance between two adjacent screen rods 3122 in the radial direction Y of the mounting shaft 10 is 4mm-12mm. For example, in this embodiment, the distance between two adjacent screen rods 3122 in the radial direction Y of the mounting shaft 10 is 5mm. In other embodiments, the distance between two adjacent screen rods 3122 in the radial direction Y of the mounting shaft 10 can also be, but is not limited to, 3mm, 5mm, 6mm, 7mm, 7.5mm, 8mm, 9mm, 10mm, 11mm, or 12mm, etc., and this embodiment of the present invention does not impose specific limitations.

[0043] The plurality of screen rods 3122 includes a plurality of first screen rods 3124 and a plurality of second screen rods 3125. The plurality of first screen rods 3124 and the plurality of second screen rods 3125 are symmetrically arranged relative to the positioning sleeve 311. The guide slope includes a first guide surface 3126 and a second guide surface 3127. The first screen rod 3124 is provided with the first guide surface 3126. The second screen rod 3125 is provided with the second guide surface 3127. The inclination directions of the first guide surface 3126 and the second guide surface 3127 are opposite. The first guide surface 3126 is inclined in the material conveying direction toward the side away from the central axis P of the mounting shaft 10; or, the first guide surface 3126 is inclined in the material conveying direction toward the side away from the central axis P of the mounting shaft 10. Therefore, on the one hand, the arrangement of the first guide surface 3126 and the second guide surface 3127 can guide the material to exit the screening channel 3123 away from the mounting shaft 10, thereby reducing the amount of material entering between the mounting shaft 10 and the magnetic mesh 31, reducing the wear between the retaining ring 20 and the mounting shaft 10, reducing maintenance costs and extending service life; on the other hand, the arrangement of the first guide surface 3126 and the second guide surface 3127 can prevent the material from accumulating on the screen rod 3122, increasing the contact area between the material and the screen rod 3122 when the material is falling, and improving the material conveying capacity and screening effect.

[0044] Please refer to the following: Figure 1 , Figure 2 , Figure 5 and Figure 6 , Figure 5 yes Figure 2 A magnified first-view view of the retaining ring 20 of the magnetic separator 300; Figure 6 yes Figure 2The image shows an enlarged view from a second perspective of the retaining ring 20 of the magnetic separator 300. The retaining ring 20 includes a first ring body 21, a second ring body 22, and a connecting rod 23. The first ring body 21 is located inside the second ring body 22 and is sleeved on the outside of the mounting shaft 10. The second ring body 22 seals the gap 301. The connecting rod 23 connects the first ring body 21 and the second ring body 22. The first ring body 21 is provided with a limiting part 24. The limiting part 24 and the positioning part 3110 are nested together to restrict the relative rotation of adjacent retaining rings 20 and magnetic mesh 31 in the circumferential direction Z of the mounting shaft 10. Therefore, on the one hand, the limiting part 24 and the positioning part 3110 are nested together, so there is no need to introduce additional locking structures such as keys and pins, avoiding the problem of loosening of the locking structure between the magnetic mesh assembly 30 and the retaining ring 20 during vibration, and the problem of wear and debris generation between the locking structure and the magnetic mesh 31 and the retaining ring 20; on the other hand, the retaining ring 20 and the magnetic mesh 31 are circumferentially fixed and can rotate together to form a stable centrifugal force field and magnetic field superposition effect, so that impurities are adsorbed according to the designed path; furthermore, the circumferential fixation of the retaining ring 20 and the magnetic mesh 31 can eliminate the friction between the magnetic mesh 31 and the retaining ring 20, avoiding the problem of wear or heat generation caused by the relative movement of the retaining ring 20 and the magnetic mesh 31.

[0045] The limiting part 24 includes multiple limiting grooves 241 and multiple limiting protrusions 242. The multiple limiting grooves 241 and multiple limiting protrusions 242 are arranged at intervals along the circumferential direction Z of the mounting shaft 10. The multiple limiting grooves 241 and multiple limiting protrusions 242 are alternately spaced along the circumferential direction Z of the mounting shaft 10. The slotting direction of two adjacent limiting grooves 241 in the radial direction Y of the mounting shaft 10 forms a second included angle β. The second included angle β can be, but is not limited to, 45°, 60°, 90°, or 120°, etc. In the axial direction X of the mounting shaft 10, the adjacent limiting part 24 and the positioning part 3110 are nested together, meaning that the limiting groove 241 of one limiting sleeve cooperates with the positioning protrusion 3112 of the adjacent positioning sleeve 311, and the limiting protrusion 242 of the limiting sleeve cooperates with the positioning groove 3111 of the adjacent positioning sleeve 311. Thus, the adjacent magnetic mesh 31 and the retaining ring 20 are relatively fixed in the circumferential direction Z, which can prevent the magnetic mesh 31 from rotating and causing frequent changes in magnetic field polarity, keep the magnetic field direction consistent, and ensure the adsorption efficiency and adsorption stability of magnetic substances in the material.

[0046] In some embodiments, the retaining ring 20 is configured as a non-metallic structure; or, the surface of the retaining ring 20 is provided with a non-metallic coating. This reduces the risk of metal debris being generated due to friction between the retaining ring 20 and the inner wall of the iron removal chamber 1001 during disassembly or assembly of the magnetic mesh assembly 30 and during material screening in the magnetic separator 300. This reduces the maintenance cost of the magnetic separator 300, improves material quality, and enhances battery safety. The materials used for the non-metallic structure and non-metallic coating may include, but are not limited to, materials such as acetal alloy and PTFE.

[0047] In some embodiments, the retaining ring 20 is provided with a chamfer 25, which is set at an angle relative to the central axis P of the mounting shaft 10, and is used to guide the material on the retaining ring 20 to move along the material conveying direction. Thus, the chamfer 25 reduces obstruction to the falling powder, reduces material residue on the retaining ring 20, and accelerates the rate at which the powder on the retaining ring 20 is guided to the magnetic mesh 31 during vibration, thereby improving the iron removal efficiency of the material.

[0048] In this embodiment, for example, the retaining ring 20 has a plurality of discharge holes 201 in the axial direction X of the mounting shaft 10. The retaining ring 20 has a chamfer 25 around the perimeter of each discharge hole 201. Therefore, the chamfer 25 reduces obstruction to the discharge of powder, reduces material residue on the retaining ring 20, and accelerates the rate at which the powder on the retaining ring 20 is guided to the magnetic mesh 31 during vibration, thereby improving the iron removal efficiency of the material.

[0049] Specifically, the chamfer 25 includes at least one of a first chamfer 251, a second chamfer 252, and a third chamfer 253. The first chamfer 251 is provided on the outer sidewall of the first ring body 21 facing the second ring body 22, the second chamfer 252 is provided on the inner sidewall of the second ring body 22 facing the first ring body 21, and the third chamfer 253 is provided on at least one of the two sidewalls of the connecting rod 23 in the circumferential direction Z of the mounting shaft 10. Therefore, the first chamfer 251 guides the material away from the mounting shaft 10 towards the magnetic mesh 31, thereby reducing material entry between the mounting shaft 10 and the first ring 21, reducing wear between the retaining ring 20 and the mounting shaft 10, lowering maintenance costs, and extending service life. The second chamfer 252 guides the material away from the outer wall of the iron removal chamber 1001 towards the magnetic mesh 31, preventing material from escaping between the second ring 22 and the inner wall of the iron removal chamber 1001, improving material screening quality, reducing wear between the retaining ring 20 and the inner wall of the iron removal chamber 1001, lowering maintenance costs, and extending service life. The third chamfer 253 reduces obstruction of powder falling and prevents material accumulation on the connecting rod 23, improving material conveying capacity and screening effect.

[0050] Please refer to the following: Figure 2 and Figure 7 , Figure 7 yes Figure 2 An enlarged view of the mounting shaft 10 of the magnetic separator 300. In this embodiment, the mounting shaft 10 includes a shaft body 11, a stop block 12, and a clamping head 13. The stop block 12 is fixed to one end of the shaft body 11, and the clamping head 13 is detachably fixed to the other end of the shaft body 11. A retaining ring 20 and multiple magnetic meshes 31 are pressed between the clamping head 13 and the stop block 12 in the axial direction X of the mounting shaft 10. Thus, by fixing the retaining ring 20 and multiple magnetic meshes 31 relative to the mounting shaft 10 in the axial direction X, on the one hand, the spacing and relative position between the multiple magnetic meshes 31 are stable, ensuring a uniform magnetic field distribution and avoiding the problem of the magnetic meshes 31 being misaligned due to vibration or material impact, which would affect the adsorption / separation efficiency; on the other hand, the axially fixed retaining ring 20 and multiple magnetic meshes 31 can improve the overall rigidity of the magnetic separator 300, reduce the risk of the magnetic meshes 31 being dented or deformed, and reduce wear caused by vibration under vibration conditions, thus extending the service life.

[0051] In some embodiments, the magnetic mesh assembly 30 includes a plurality of magnetic mesh groups 310. Each magnetic mesh group 310 includes one or more magnetic meshes 31. The number of retaining rings 20 is set to a plurality. Exemplarily, in this embodiment, each magnetic mesh group 310 includes a plurality of magnetic meshes 31, thereby increasing the contact time and area with the magnetic field, thereby enhancing the adsorption capacity of magnetic substances in the material and improving the screening effect of the material. The number of magnetic meshes 31 in each magnetic mesh group 310 includes 3, 4, 5, 6, 7, 8, 8, or 10, etc. For example, the number of magnetic meshes 31 in each magnetic mesh group 310 includes 3 to 10. Optionally, the number of magnetic meshes 31 in each magnetic mesh group 310 includes 4 to 8.

[0052] Please refer to it again. Figure 1 and Figure 2 In the first embodiment, the plurality of retaining rings 20 include at least one first retaining ring 202. Each first retaining ring 202 is disposed between two adjacent magnetic mesh groups 310. Please refer to [further details omitted]. Figure 1 , Figure 2 and Figure 8 , Figure 8This is a schematic diagram of the magnetic separation device 300 of the electromagnetic iron removal equipment 1000 provided in the second embodiment of this utility model. In the second embodiment, the plurality of retaining rings 20 include a first retaining ring 202 and a second retaining ring 203. The first retaining ring 202 is disposed between two adjacent magnetic mesh groups 310. The second retaining ring 203 is disposed upstream of all magnetic mesh groups 310 in the material conveying direction. Therefore, by setting a second baffle ring 203 on the side of the iron removal chamber 1001 near the feed end, the second baffle ring 203 can guide all the material toward the magnetic mesh 31, so that the material can make more full contact with the magnetic mesh 31 when it falls, increasing the probability of magnetic substances in the material being adsorbed and improving the iron removal efficiency of the material. On the other hand, a first baffle ring 202 is set between two adjacent magnetic meshes 31, so that the first baffle ring 202 can guide the material near the inner wall of the iron removal chamber 1001 toward the center of the magnetic mesh 31, improving the screening effect of the material. Furthermore, the first baffle ring 202 and the second baffle ring 203 buffer the mechanical impact force applied by the material and prevent adjacent magnetic meshes 31 from being damaged by resonance collision, thus extending the service life of the magnetic meshes 31.

[0053] Of course, in some embodiments, the plurality of retaining rings 20 may also include a third retaining ring (not shown). The second retaining ring 203 is disposed downstream of all magnetic mesh assemblies 310 in the material conveying direction.

[0054] It should be noted that the first retaining ring 202, the second retaining ring 203, and the third retaining ring can be set according to actual conditions, and this embodiment of the present invention does not impose a specific limitation. The number of second retaining rings 203 can be set according to the number of magnetic mesh groups 310, with one first retaining ring 202 provided for every two adjacent magnetic mesh groups 310. The number of magnetic meshes 31 in each magnetic mesh group 310 can also be set according to actual conditions, and this embodiment of the present invention does not impose a specific limitation.

[0055] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A magnetic separator (300), characterized in that, include: Mounting shaft (10), the mounting shaft (10) is used to be mounted on the housing (100) of the electromagnetic iron removal device (1000), the housing (100) being provided with an iron removal chamber (1001). A retaining ring (20) is sleeved on the outside of the mounting shaft (10); A magnetic mesh assembly (30) includes multiple magnetic meshes (31). The multiple magnetic meshes (31) are sleeved on the outside of the mounting shaft (10) and arranged with the retaining ring (20) in the axial direction (X) of the mounting shaft (10). The radial dimension of the retaining ring (20) in the radial direction (Y) of the mounting shaft (10) is greater than the radial dimension of the magnetic meshes (31) in the radial direction (Y) of the mounting shaft (10), and is used to seal the gap (301) formed between the magnetic meshes (31) and the inner wall of the iron removal cavity (1001) in the radial direction (Y) of the mounting shaft (10).

2. The magnetic separator (300) as described in claim 1, characterized in that, In the projection plane perpendicular to the axial direction (X) of the mounting shaft (10), two adjacent magnetic meshes (31) are arranged in a staggered manner.

3. The magnetic separator (300) as described in claim 2, characterized in that, Each of the magnetic meshes (31) includes a positioning sleeve (311) and a screen body (312). The positioning sleeve (311) is sleeved on the outer side of the mounting shaft (10), and the screen body (312) is sleeved on the outer side wall of the positioning sleeve (311). The positioning sleeve (311) is provided with a positioning part (3110). The two positioning parts (3110) of two adjacent magnetic meshes (31) are nested to restrict the relative rotation of the two adjacent magnetic meshes (31) in the circumferential direction (Z) of the mounting shaft (10).

4. The magnetic separator (300) as described in claim 3, characterized in that, The retaining ring (20) includes a first ring body (21), a second ring body (22), and a connecting rod (23). The first ring body (21) is located inside the second ring body (22) and is sleeved on the outside of the mounting shaft (10). The second ring body (22) seals the gap (301). The connecting rod (23) connects the first ring body (21) and the second ring body (22). The first ring body (21) is provided with a limiting part (24). The limiting part (24) is nested with the positioning part (3110) to restrict the adjacent retaining rings (20) and the magnetic mesh (31) from rotating relative to each other in the circumferential direction (Z) of the mounting shaft (10).

5. The magnetic separator (300) as described in claim 1, characterized in that, The retaining ring (20) is configured as a non-metallic structure; or, the surface of the retaining ring (20) is provided with a non-metallic coating.

6. The magnetic separator (300) as described in claim 1, characterized in that, The retaining ring (20) is provided with a chamfer (25), which is set at an angle relative to the central axis (P) of the mounting shaft (10) and is used to guide the material on the retaining ring (20) to move along the material conveying direction.

7. The magnetic separator (300) as described in claim 6, characterized in that, The retaining ring (20) has a plurality of material dropping holes (201) in the axial direction (X) of the mounting shaft (10), and the retaining ring (20) has a chamfer (25) around the perimeter of each material dropping hole (201); the chamfer (25) includes at least one of a first chamfer (251), a second chamfer (252) and a third chamfer (253), and the retaining ring (20) includes a first ring body (21), a second ring body (22) and a connecting rod (23), the first ring body (21) is located inside the second ring body (22) and is sleeved on the mounting shaft (10). On the outside of the first ring (21), the second ring (22) blocks the gap (301), the connecting rod (23) is connected between the first ring (21) and the second ring (22), the first ring (21) is provided with the first chamfer (251) on the outer side wall facing the second ring (22), the second ring (22) is provided with the second chamfer (252) on the inner side wall facing the first ring (21), and the connecting rod (23) is provided with the third chamfer (253) on at least one of the two side walls in the circumferential direction (Z) of the mounting shaft (10).

8. The magnetic separator (300) as described in any one of claims 1-5, characterized in that, The mounting shaft (10) includes a shaft body (11), a stop block (12), and a clamping head (13). The stop block (12) is fixed to one end of the shaft body (11), and the clamping head (13) is detachably fixed to the other end of the shaft body (11). The retaining ring (20) and a plurality of magnetic meshes (31) are pressed between the clamping head (13) and the stop block (12) in the axial direction (X) of the mounting shaft (10).

9. The magnetic separator (300) as described in any one of claims 1-5, characterized in that, The magnetic mesh assembly (30) includes a plurality of magnetic mesh groups (310), each magnetic mesh group (310) including one or more magnetic meshes (31), and the number of retaining rings (20) is set to a plurality, the plurality of retaining rings (20) including a first retaining ring (202) and a second retaining ring (203), the first retaining ring (202) being disposed between two adjacent magnetic mesh groups (310), and the second retaining ring (203) being disposed upstream of all magnetic mesh groups (310) in the material conveying direction.

10. An electromagnetic iron removal device (1000), characterized in that, The device includes a housing (100) and a magnetic separator (300) as described in any one of claims 1-9, wherein the housing (100) is provided with an iron removal chamber (1001) and the magnetic separator (300) is disposed in the iron removal chamber (1001).

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