Electromagnetic iron removal equipment

Abstract

The electromagnetic iron removal equipment comprises an outer shell, an inner shell, an excitation module and a separator, and a refrigerant inlet is formed in the bottom of the outer shell; the inner shell is arranged in the outer shell in a penetrating mode, the inner shell and the outer shell form a containing cavity, the inner shell is provided with an iron removal cavity, and a magnetic induction piece is installed in the iron removal cavity. The excitation module is arranged in the containing cavity and comprises a supporting frame and multiple layers of excitation coils arranged on the supporting frame, the supporting frame is fixedly connected with the outer shell, and a first flow guide channel is formed between every two adjacent layers of excitation coils and / or between the inner side wall of the excitation module and the outer side wall of the inner shell; the outer side wall and the top wall of the excitation module and the inner wall of the shell form a second flow guide channel communicated with the first flow guide channel; the partition piece is arranged between the bottom wall of the shell and the supporting frame, the partition piece, the bottom wall of the shell and the supporting frame form a refrigerant buffer cavity, the refrigerant buffer cavity communicates with the refrigerant inlet and the first flow guide channel, and therefore heat exchange can be evenly conducted between the refrigerant and heat generated by the magnet exciting coil, and the flow speed of the refrigerant in the heat dissipation channel is increased.

Description

Technical Field

[0001] This application relates to the field of electromagnetic iron removal technology, and in particular to an electromagnetic iron removal device. Background Technology

[0002] Existing technologies typically remove ferrous impurities by magnetic adsorption. Current electromagnetic iron removal equipment usually uses a cooling medium to cool the excitation coil; however, the heat generated by the cooling medium and the excitation coil cannot be uniformly exchanged, causing the excitation coil to deform due to localized temperature differences. This reduces the strength of the magnetic field generated by the excitation coil under the influence of current. Utility Model Content

[0003] In view of this, one objective of this application is to provide an electromagnetic iron removal device to solve the technical problem in the prior art where the heat generated by the cooling medium and the excitation coil cannot be uniformly exchanged, causing the excitation coil to deform due to local temperature differences, which affects the performance of the excitation coil in generating a magnetic field when energized.

[0004] In a first aspect, embodiments of this application provide an electromagnetic iron removal device, including a shell, an inner shell, an excitation module, and a separator. The bottom of the shell is provided with a refrigerant inlet. The inner shell passes through the shell and forms a accommodating cavity communicating with the refrigerant inlet. The inner shell is provided with an iron removal chamber isolated from the accommodating cavity. The iron removal chamber is used to accommodate materials to be treated and is equipped with a magnetic sensing element for adsorbing ferromagnetic objects in the materials to be treated. The excitation module is disposed within the accommodating cavity. The excitation module includes a support frame and multiple layers of excitation coils disposed on the support frame. A first flow channel is formed between two adjacent layers of excitation coils. The outer wall of the excitation module and the inner wall of the shell form a second flow channel communicating with the first flow channel. The separator is disposed between the bottom wall of the shell and the support frame, and forms a refrigerant buffer cavity with the bottom wall of the shell and the support frame. The refrigerant buffer cavity communicates between the refrigerant inlet and the first flow channel.

[0005] In conjunction with the first aspect, in some implementations of the first aspect, a refrigerant outlet is provided on the top of the outer casing, and the refrigerant outlet and the refrigerant inlet are connected by an external flow channel provided with an external cooling device. The refrigerant inlet, the refrigerant buffer chamber, the first flow channel, the second flow channel, the refrigerant outlet, and the external flow channel are sequentially connected to form a refrigerant circuit.

[0006] In conjunction with the first aspect, in some implementations of the first aspect, the separator includes a first separator plate and a second separator plate, the first separator plate and the second separator plate being coaxially nested and spaced apart, and together with the bottom wall of the outer shell and the support frame, forming the refrigerant buffer cavity.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, all the first flow channels are connected to the refrigerant buffer chamber, and at least a portion of the first flow channels are projected onto the excitation module in the axial direction, with the refrigerant buffer chamber located within the projection of the excitation module in the axial direction.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the support frame includes a first support plate, a second support plate, and a plurality of support rods connecting the first support plate and the second support plate. The first support plate and / or the second support plate are fixedly connected to the outer shell. The excitation module is disposed between the first support plate and the second support plate and is located between the plurality of support rods and the inner shell. The first support plate is provided with a plurality of first flow guide hole groups communicating with the refrigerant buffer chamber and the first flow guide channel. The second support plate is provided with a plurality of second flow guide hole groups communicating with the first flow guide channel and the second flow guide channel. The first flow guide hole groups and the second flow guide hole groups are each spaced apart along the circumferential direction of the excitation module.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the electromagnetic iron removal device further includes a first bearing protrusion and a plurality of second bearing protrusions. The first bearing protrusion is disposed on the end face of the first support plate facing the second support plate. The first bearing protrusion is located on the outermost side of the plurality of first guide hole groups and abuts against the bottom surface of the outermost excitation coil in a ring shape. The plurality of second bearing protrusions are arranged radially from the center of the excitation module and are spaced apart along the circumferential direction of the excitation module. The plurality of second bearing protrusions and the plurality of first guide hole groups are spaced apart along the circumferential direction of the excitation module.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the electromagnetic iron removal device further includes at least one third bearing protrusion coaxially disposed with the first bearing protrusion, each of the third bearing protrusions being annularly abutting against the bottom surface of the corresponding layer of the excitation coil outside the outermost layer.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the first bearing protrusion includes multiple bearing segments, which are alternately spaced along the circumferential direction of the excitation module, and an obstruction opening is formed between two adjacent bearing segments for the second bearing protrusion to pass through; or, the multiple bearing segments are connected along the circumferential direction of the excitation module to form an integral structure.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, the electromagnetic iron removal device further includes a plurality of insulating components, which are arranged at intervals along the radial direction of the excitation module. Some of the insulating components are correspondingly disposed between all two adjacent layers of the excitation coils, and the remaining insulating components are disposed between the innermost excitation coil and the inner shell. Each insulating component includes a plurality of insulating strips, which are arranged at intervals along the circumferential direction of the excitation module within the first flow channel.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the refrigerant outlet is higher than the second support plate in the axial direction of the excitation module.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the bottom of the housing is further provided with a refrigerant outlet, the refrigerant outlet connecting the accommodating cavity and the external valve body; the bottom of the housing includes a first region and a second region, the first region being correspondingly provided with the refrigerant buffer cavity, the second region being located outside the first region, the refrigerant inlet being located in the first region, and the refrigerant outlet being located in the second region.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the electromagnetic iron removal device further includes a detection sensor for detecting the immersion height of the excitation coil in the refrigerant along the axial direction of the excitation module; and / or for detecting the temperature and / or flow rate of the refrigerant discharged from the refrigerant outlet.

[0016] The electromagnetic iron removal device provided in this application embodiment is based on the placement of a separator between the bottom wall of the outer shell and the support frame, and the placement of a refrigerant buffer chamber between the refrigerant inlet and the first guide channel. On the one hand, before entering the first guide channel, the refrigerant will be evenly distributed throughout the refrigerant buffer chamber under the action of gravity before overflowing upwards into the first guide channel and beginning to wet the excitation coil. This allows the refrigerant buffer chamber to stabilize the flow of the refrigerant, reduce the impact caused by pressure fluctuations or flow rate changes, and ensure uniform distribution of the refrigerant. As a result, the refrigerant can uniformly exchange heat with the heat generated by the excitation coil, avoiding the problem of excitation coil deformation caused by local temperature differences, and improving the strength of the magnetic field generated by the excitation coil under the action of current. On the other hand, the separator is placed between the bottom wall of the outer shell and the support frame, thereby preventing the refrigerant from flowing laterally into the second guide channel. This allows more refrigerant flowing in from the refrigerant inlet to enter the heat dissipation channel, thereby increasing the flow rate of the refrigerant in the heat dissipation channel and improving the heat exchange efficiency between the refrigerant and the excitation coil. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the electromagnetic iron removal equipment system provided in the embodiments of this application.

[0019] Figure 2 yes Figure 1 A top view of the electromagnetic iron removal equipment in the electromagnetic iron removal system.

[0020] Figure 3 yes Figure 2 A sectional view of the partial structure of the electromagnetic iron removal device along section II.

[0021] Figure 4 yes Figure 2 The schematic diagram of the outer casing of the electromagnetic iron removal equipment in the image is shown, omitting the top cover.

[0022] Figure 5 yes Figure 2 A schematic diagram of the first embodiment of the electromagnetic iron removal device.

[0023] Figure 6 yes Figure 2 The schematic diagram of the electromagnetic iron removal device in the image is omitted, showing the outer casing.

[0024] Figure 7 yes Figure 2 A schematic diagram of the second embodiment of the electromagnetic iron removal device.

[0025] Figure 8 yes Figure 2 A schematic diagram of the electromagnetic iron removal equipment.

[0026] Key reference numerals: Electromagnetic iron removal system - 1000; Electromagnetic iron removal equipment - 100; Base - 200; External cooling equipment - 300; Outer shell - 10; Refrigerant circuit - 1001; Refrigerant inlet - 101; Refrigerant outlet - 102; External flow channel - 103; Receptacle cavity - 105; Refrigerant outlet - 106; Detection port - 107; Mounting port - 108; Base plate - 11; First area - 1101; Second area - 1102; Enclosure plate - 12; Top cover - 13; External valve body - 20; Inner shell - 30; Iron removal chamber - 301; Feed inlet - 302; Cylinder - 31; End cover - 32; Magnetic sensing element - 40; Magnetic focusing element - 42; Excitation module - 50; First flow channel - 501; Second flow channel - 502; First sub-flow channel - 5021; Two-channel flow path - 5022; Support frame - 51; First support plate - 511; First guide hole group - 5110; First connecting part - 5111; Mounting part - 5112; Second support plate - 512; Second guide hole group - 5120; Second connecting part - 5121; Support rod - 513; Excitation coil - 52; Insulating component - 53; Insulating strip - 531; Separator - 60; Refrigerant buffer chamber - 601; First separator plate - 61; Second separator plate - 62; Diverter groove - 701; First bearing protrusion - 71; Bearing section - 711; Second bearing protrusion - 72; Third bearing protrusion - 73; Detection sensor - 80; First sensor - 81; Second sensor - 82; Oil pump - 90; Axial direction - X; Radial direction - Y; Circumferential direction - Z; Central axis - P.

[0027] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] It is understood that the terminology in the specification, claims, and accompanying drawings of this application is for describing specific embodiments only and is not intended to limit this application. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application 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 application 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 application, wherein words indicating orientation 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 application, 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, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] The following description provides preferred embodiments for carrying out this application; however, this description is for the purpose of illustrating the general principles of this application and is not intended to limit the scope of this application. The scope of protection of this application shall be determined by the appended claims.

[0031] Please see Figure 1 , Figure 1 This is a schematic diagram of the electromagnetic iron removal device 100 system provided in this application embodiment. The electromagnetic iron removal device 100 system includes a base 200, an electromagnetic iron removal device 100, and an external cooling device 300. The electromagnetic iron removal device 100 and the external cooling device 300 are mounted on the base 200. The electromagnetic iron removal device 100 is used to remove ferromagnetic objects from materials. The external cooling device 300 is used to cool the refrigerant discharged from the electromagnetic iron removal device 100. Exemplarily, in this embodiment, the electromagnetic iron removal device 100 is disposed on the top of the base 200, and the external cooling device 300 is disposed on the bottom of the base 200. It should be noted that the installation method of the electromagnetic iron removal device 100 and the external cooling device 300 with the base 200 can be set according to the actual situation, and this application embodiment does not make specific limitations.

[0032] For example, in this embodiment, the material can be a battery slurry. Battery slurry includes various materials, such as, but not limited to, solvents, conductive agents, liquids, solids, or powders, etc., which are mixed to form the battery slurry. In this embodiment, battery slurry is used as an illustration; it is understood that the material can also be other slurries, such as food, pharmaceutical, fertilizer, or building materials, etc., and the category of the material is not limited here.

[0033] Please refer to the following: Figure 2 and Figure 3 , Figure 2 yes Figure 1 A top view of the electromagnetic iron removal device 100 system in the middle. Figure 3 yes Figure 2 The electromagnetic iron removal device 100 is shown in a partial cross-sectional view along section II. The electromagnetic iron removal device 100 includes a housing 10, an inner housing 30, an excitation module 50, and a partition 60. A refrigerant inlet 101 is provided at the bottom of the housing 10. The inner housing 30 passes through the housing 10, forming a receiving cavity 105 with the housing 10. The inner housing 30 is provided with an iron removal chamber 301, isolated from the receiving cavity 105. The iron removal chamber 301 is equipped with a magnetic sensing element 40 for adsorbing ferromagnetic objects in the material to be treated. The excitation module 50 is disposed within the receiving cavity 105. The excitation module 50 includes a support frame 51 and multiple layers of excitation coils 52 disposed on the support frame 51. The support frame 51 is fixedly connected to the housing 10. A first flow channel 501 is formed between two adjacent layers of excitation coils 52 and / or between the inner wall of the excitation module 50 and the outer wall of the inner housing 30. The outer and top walls of the excitation module 50 and the inner wall of the outer casing 10 form a second flow channel 502 that communicates with the first flow channel 501. A separator 60 is disposed between the bottom wall of the outer casing 10 and the support frame 51, forming a refrigerant buffer chamber 601 with the bottom wall of the outer casing 10 and the support frame 51. The refrigerant buffer chamber 601 communicates with the refrigerant inlet 101 and the first flow channel 501.

[0034] The electromagnetic iron removal device 100 provided in this application embodiment is based on the arrangement of a separator 60 between the bottom wall of the outer casing 10 and the support frame 51, and the arrangement of a refrigerant buffer chamber 601 between the refrigerant inlet 101 and the first guide channel 501. On the one hand, before entering the first guide channel 501, the refrigerant, under the action of gravity, will evenly fill the entire refrigerant buffer chamber 601 and then overflow upwards into the first guide channel 501 to begin wetting the excitation coil 52. This allows the refrigerant buffer chamber 601 to stabilize the flow of the refrigerant, reducing the impact caused by pressure fluctuations or flow rate changes, and ensuring... The refrigerant is evenly distributed, allowing it to exchange heat evenly with the heat generated by the excitation coil 52. This avoids deformation of the excitation coil 52 due to localized temperature differences and increases the strength of the magnetic field generated by the excitation coil 52 under the influence of current. On the other hand, the separator 60 is located between the bottom wall of the outer casing 10 and the support frame 51, preventing the refrigerant from flowing laterally into the second guide channel 502. This allows more refrigerant flowing into the refrigerant inlet 101 to enter the heat dissipation channel, thereby increasing the flow rate of the refrigerant in the heat dissipation channel and improving the heat exchange efficiency between the refrigerant and the excitation coil 52.

[0035] The working principle of the electromagnetic iron removal device 100 is as follows: When the excitation coil 52 is energized, current flows through the excitation coil 52, and the excitation coil 52 generates a magnetic field. The magnetic sensing element 40 achieves electromagnetic induction under the action of the magnetic field generated by the excitation coil 52, thereby capturing and removing ferromagnetic objects from the material. However, the excitation coil 52 generates a large amount of heat during the magnetic field generation process. Excessive temperature of the excitation coil 52 can lead to a decrease in its performance, reducing the electromagnetic induction effect between the excitation coil 52 and the magnetic sensing element 40, and may even cause damage to the excitation coil 52. Therefore, this application introduces a refrigerant into the accommodating cavity 105, allowing the refrigerant to permeate the excitation module 50. This allows the refrigerant to adequately cool the excitation coil 52, preventing it from burning out during energization, improving its service life, and enhancing the stability of the magnetic field generated by the excitation coil 52.

[0036] It should be noted that, Figure 1 The purpose is only to schematically describe the arrangement of the outer shell 10, inner shell 30, excitation module 50 and separator 60, and is not to make specific limitations on the connection position, connection relationship and specific structure of each component. Figure 1 The structure of the electromagnetic iron removal device 100 illustrated in this application embodiment is merely a schematic representation and does not constitute a specific limitation on the electromagnetic iron removal device 100. In other embodiments of this application, the electromagnetic iron removal device 100 may include... Figure 1 The electromagnetic iron removal device 100 may include, but is not limited to, temperature sensors, battery management systems, connecting harnesses, etc., more or fewer components, or combinations of certain components, or different components.

[0037] The term "electromagnetic iron removal equipment 100" refers to a device that converts its stored chemical energy into electrical energy, that is, a device that converts pre-stored energy into usable electrical energy. The term "magnetic material" refers to a material that can respond to an external magnetic field and generate magnetization or magnetic induction.

[0038] For the sake of accuracy, all references to direction in this article should be expressed in terms of direction. Figure 3 For 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 excitation module 50, wherein the extension direction of the X-axis is the up-down direction (where the positive X-axis is up); the term "radial direction Y" refers to the direction perpendicular to the central axis P of the excitation module 50, i.e., along the radial direction of the cross-section of the excitation module 50, wherein the extension direction of the Y-axis is the left-right direction (where the positive Y-axis is right); the term "circumferential direction Z" refers to the circumferential direction of the excitation module 50, i.e., the direction surrounding the central axis P of the excitation module 50, wherein the extension direction of the Z-axis is the front-back direction (where the positive Z-axis is back). The axial direction X, radial direction Y, and circumferential direction Z together constitute the three orthogonal directions of the excitation module 50. For ease of description, the up-down, left-right, and front-back orientations in this application are relative positions and do not constitute a limitation on implementation. The length direction X, width direction Y, and height direction Z of the excitation module 50 can be customized according to the specific structure of the product and the perspective of the accompanying drawings, and this application does not impose specific limitations.

[0039] Exemplarily, in this embodiment, the outer casing 10 is prismatic in shape. Specifically, the outer casing 10 includes a base plate 11, a surrounding plate 12, and a top cover 13. The base plate 11 and the top cover 13 are sealed to the surrounding plate 12 at both ends in the axial direction X of the excitation module 50. Of course, in some embodiments, the outer casing 10 may also be cylindrical, or other regular or irregular shapes; this application does not impose specific limitations. For example, the outer casing 10 may also be frustoconical.

[0040] The inner shell 30 includes a cylindrical body 31 and an end cap 32. One end of the cylindrical body 31 passes through the outer shell 10 and is sealed to the base plate 11. The end of the cylindrical body 31 facing away from the base plate 11 is sealed to the end cap 32. The end cap 32, the cylindrical body 31, and the base plate 11 form an iron removal cavity 301. The end cap 32 is provided with a feed port 302 that communicates with the iron removal cavity 301, so that the feed port 302 can enter the iron removal cavity 301 from the top of the cylindrical body 31 and fall automatically under the action of gravity. Of course, in some embodiments, the cylindrical body 31 may also be provided with a feed port 302 on the side wall near the end cap 32. This application embodiment does not specifically limit this. The end cap 32 is fixedly connected to the top cover 13 of the outer shell 10 by a locking member, thereby facilitating the assembly of the inner shell 30 and the outer shell 10. The cylindrical body 31 is cylindrical in shape, thereby facilitating the alignment and assembly with the excitation module 50. Of course, in some embodiments, the shape of the cylinder 31 may also be a regular prism, or other regular or irregular shapes. This application does not impose specific limitations on the embodiments.

[0041] In some embodiments, the electromagnetic iron removal device 100 further includes a magnetic focusing element 42. The magnetic focusing element 42 is disposed within the iron removal cavity 301 and located at at least one end of the inner shell 30. When the excitation coil 52 is energized to generate a magnetic field, the magnetic focusing element 42 can attract and concentrate the magnetic field dispersed by the excitation coil 52, enhance the magnetic field strength at the end position of the inner shell 30, and improve the magnetic field strength and uniformity within the inner shell 30, thereby increasing the magnetic field strength induced on the magnetic sensing element 40 and improving the adsorption capacity of the magnetic sensing element 40 for metallic foreign matter in the battery slurry.

[0042] For example, in this embodiment, two magnetic focusing components 42 are provided. One magnetic focusing component 42 is located at the end of the inner shell 30 near the end cover 32 and is fixedly connected to the end cover 32. The other magnetic focusing component 42 is located at the end of the inner shell 30 away from the end cover 32 and is fixedly connected to the top cover 13 of the outer shell 10. Thus, on the one hand, by supporting the two magnetic focusing components 42 separately through the top cover 13 and the end cover 32 of the outer shell 10, the weight of the magnetic focusing component 42 can be avoided from acting on the inner shell 30, thereby preventing the weight of the magnetic focusing component 42 from being transmitted to the inner shell 30 and avoiding the problem of deformation of the inner shell 30 under the gravity of the magnetic focusing component 42, thus improving the operational reliability of the iron removal equipment 1000. On the other hand, the two magnetic focusing components 42 can concentrate the magnetic field at both ends of the inner shell 30, so that the magnetic field is fully concentrated inside the inner shell 30, improving the utilization rate of the magnetic field and improving the working efficiency of the iron removal equipment 1000. Of course, in some embodiments, the magnetic focusing element 42 may be set to one or more, and this application embodiment does not make specific limitations.

[0043] It should be noted that, in this embodiment, the inner wall of the outer casing 10 includes the top wall of the substrate 11 facing the top cover 13, the bottom wall of the top cover 13 facing the substrate 11, and the inner sidewall of the surrounding plate 12 facing the excitation module 50. The inner sidewall of the excitation module 50 refers to the sidewall of the innermost excitation coil 52 facing the inner casing 30; the outer sidewall of the excitation module 50 refers to the sidewall of the outermost excitation coil 52 facing the surrounding plate 12.

[0044] The magnetic sensing element 40 refers to a device capable of responding to an external magnetic field and generating magnetization or magnetic induction. The magnetic sensing element 40 is made of a magnetically sensitive material, which includes, but is not limited to, at least one of ferromagnetic, ferrimagnetic, and paramagnetic materials. One or more magnetic sensing elements 40 may be configured. Exemplarily, in this embodiment, multiple magnetic sensing elements 40 are configured. The multiple magnetic sensing elements 40 are spaced apart along the axial direction X of the excitation module 50. The magnetic sensing elements 40 are configured as a mesh structure.

[0045] An excitation coil 52 is a device that generates a magnetic field by passing an electric current through it, and is typically made of wire wound into a coil. Specifically, the excitation coil 52 has a hollow cylindrical structure. The excitation coil 52 is cylindrical in shape, and multiple layers of excitation coils 52 are coaxially spaced to ensure magnetic field uniformity and reduce interference. When the excitation coil 52 is energized, it generates a magnetic field, and the magnetic sensing element 40 achieves electromagnetic induction under the influence of the magnetic field, thereby enabling the magnetic sensing element 40 to capture and remove ferromagnetic objects from materials. The excitation coil 52 can be a regular prism, or other regular or irregular shapes; this embodiment does not specifically limit its shape.

[0046] It should be noted that the refrigerant can be, but is not limited to, one or a combination of two of air, water, oil, fluorinated liquid, and phase change material. For example, in this embodiment, the refrigerant is oil, thereby improving the safety of the electromagnetic iron separator 100 due to the good insulating properties of oil.

[0047] In some embodiments, a refrigerant outlet 102 is provided on the top of the outer casing 10, and the refrigerant outlet 102 and the refrigerant inlet 101 are connected by an external flow channel 103 provided with an external cooling device 300. The refrigerant inlet 101, the refrigerant buffer chamber 601, the first flow channel 501, the second flow channel 502, the refrigerant outlet 102, and the external flow channel 103 are sequentially connected to form a refrigerant circuit 1001. It should be noted that the refrigerant circuit 1001 refers to the flow path of the refrigerant. Thus, on the one hand, by setting the refrigerant circuit 1001 as a closed-loop flow path, and allowing the refrigerant to first pass through the first flow channel 501 and then flow to the second flow channel 502, the heat exchange efficiency between the refrigerant and the excitation coil 52 is improved; on the other hand, the refrigerant can be recycled, improving the cooling effect of the refrigerant on the excitation coil 52. Figure 3 As shown, Figure 3 The arrows in the diagram indicate the direction of refrigerant flow.

[0048] For example, in this embodiment, the second flow channel 502 includes a first sub-flow channel 5021 and a second sub-flow channel 5022. The outer sidewall of the excitation module 50 and the inner sidewall of the outer casing 10 form the first sub-flow channel 5021, and the top wall of the excitation module 50 and the top wall of the outer casing 10 form the second sub-flow channel 5022. The second sub-flow channel 5022 connects the first sub-flow channel 5021 and the first flow channel 501. The first sub-flow channel 5021 and the first flow channel 501 are separated in the radial direction Y of the excitation module 50 and are connected to the first flow channel 501 through the second sub-flow channel 5022. In other words, the first sub-flow channel 5021 and the first flow channel 501 are separated in the radial direction Y of the excitation module 50 by the outermost excitation ring.

[0049] For example, in this embodiment, the separator 60 is integrally formed with the substrate 11, thereby improving the sealing performance of the connection between the separator 60 and the substrate 11. Specifically, the separator 60 protrudes from the top wall of the substrate 11 facing the top cover 13, so that the separator 60 can also occupy the space of the accommodating cavity 105, thereby reducing the amount of refrigerant filling the accommodating cavity 105. Of course, in some embodiments, the separator 60 can also be integrally formed with the excitation module 50; or, the separator 60 is independently arranged with the substrate 11 and the excitation module 50, and fixedly arranged relative to the substrate 11 and the excitation module 50.

[0050] In some embodiments, the electromagnetic iron removal device 100 further includes a sealing element, and the separator 60 is sealed to the bottom wall of the substrate 11 and / or the excitation module 50 through the sealing element, so that more refrigerant flowing into the refrigerant inlet 101 can enter the heat dissipation channel, thereby increasing the flow rate of the refrigerant in the heat dissipation channel and improving the heat exchange efficiency between the refrigerant and the excitation coil 52.

[0051] Please refer to the following: Figure 3 and Figure 4 , Figure 4 yes Figure 2 The schematic diagram of the outer casing 10 of the electromagnetic iron removal device 100, omitting the top cover 13, is shown. In some embodiments, the separator 60 includes a first separator 61 and a second separator 62. The first separator 61 and the second separator 62 are coaxially nested and spaced apart, forming a refrigerant buffer chamber 601 together with the bottom wall of the outer casing 10 and the support frame 51. On the one hand, the first separator 61 and the second separator 62 improve the stability of the support for the excitation module 50, thus improving the stability during operation; on the other hand, the arrangement of the first separator 61 and the second separator 62 allows the refrigerant to be constrained within the refrigerant buffer chamber 601, resulting in a uniform distribution of the refrigerant within the first flow channel 501, and improving the speed and stability of the refrigerant flow within the first flow channel 501, thereby improving the cooling and heat dissipation effect.

[0052] The first partition plate 61 and the second partition plate 62 are each configured as annular structures, which are simple in structure and easy to manufacture. Exemplarily, in this embodiment, both the first partition plate 61 and the second partition plate 62 are configured as circular structures. In other words, the cross-sectional shape of the first partition plate 61 and the second partition plate 62 along the radial direction Y of the excitation module 50 is circular. Therefore, on the one hand, the annular arrangement of the refrigerant buffer chamber 601 allows for more uniform refrigerant flow, and the resistance distribution experienced by the refrigerant during flow within the annular space is more uniform. The refrigerant flow direction naturally forms a circulation, reducing the generation of eddies and dead zones, making it less prone to dirt residue and easier to clean. On the other hand, the annular configuration of the first partition plate 61 and the second partition plate 62 results in a more uniform pressure distribution, better bearing of internal and external pressures, and reduced local stress concentration.

[0053] Of course, in some other embodiments, the cross-sectional shape of the first partition plate 61 and the second partition plate 62 along the radial direction Y of the excitation module 50 may be, but is not limited to, at least one of ellipse, triangle, trapezoid, rectangle, polygon, etc., and the embodiments of this application do not make specific limitations.

[0054] In some embodiments, the first partition plate 61 is located at the position corresponding to the outermost excitation coil 52 on the substrate 11, and the second partition plate 62 is located at the position corresponding to the innermost excitation coil 52 on the substrate 11. This allows the first partition plate 61 and the second partition plate 62 to better withstand internal and external pressures, reducing local stress concentration. Furthermore, it increases the volume of the refrigerant buffer chamber 601, thereby better handling refrigerant flow fluctuations and quickly adapting to flow changes, ensuring uniform flow and pressure distribution. It should be noted that the positions of the first partition plate 61 and the second partition plate 62 relative to the substrate 11 can be designed according to actual conditions, and this application embodiment does not impose specific limitations. For example, in some other embodiments, the first partition plate 61 and the second partition plate 62 can be located on the substrate 11 between other excitation coils 52 corresponding to the outermost and innermost excitation coils 52.

[0055] All first flow channels 501 are connected to the refrigerant buffer chamber 601, and at least a portion of the first flow channels 501 have their orthogonal projections in the axial direction X of the excitation module 50 located within the orthogonal projections of the refrigerant buffer chamber 601 in the axial direction X of the excitation module 50. Therefore, on the one hand, since all the first flow channels 501 are directly or indirectly connected to the refrigerant buffer chamber 601, the refrigerant can be distributed within each of the first flow channels 501, improving the uniformity of contact between the excitation coils 52 and the refrigerant, and improving the uniformity of cooling and heat dissipation; on the other hand, since at least a portion of the first flow channels 501 have their orthogonal projections in the axial direction X of the excitation module 50 located within the orthogonal projections of the refrigerant buffer chamber 601 in the axial direction X of the excitation module 50, the flow path of the refrigerant is shortened, reducing the flow resistance of the refrigerant.

[0056] For example, in this embodiment, the orthogonal projection of the first flow channel 501 formed between the inner sidewall of the excitation module 50 and the outer sidewall of the inner shell 30 in the axial direction X of the excitation module 50 can also be located outside the orthogonal projection of the refrigerant buffer cavity 601 in the axial direction X of the excitation module 50. The orthogonal projection of the first flow channel 501 formed between any two adjacent layers of excitation coils 52 in the axial direction X of the excitation module 50 is located within the orthogonal projection of the refrigerant buffer cavity 601 in the axial direction X of the excitation module 50, thereby enabling the refrigerant to contact all the excitation coils 52 and improving the uniformity of heat dissipation of the excitation module 50 as a whole.

[0057] Of course, in some embodiments, the orthographic projection of the portion of the first flow channel 501 formed between two adjacent excitation coils 52 in the axial direction X of the excitation module 50 is located within the orthographic projection of the refrigerant buffer cavity 601 in the axial direction X of the excitation module 50. The orthographic projection of the first flow channel 501 formed between the inner wall of the excitation module 50 and the outer wall of the inner shell 30 in the axial direction X of the excitation module 50 can also be located within the orthographic projection of the refrigerant buffer cavity 601 in the axial direction X of the excitation module 50.

[0058] Please refer to the following: Figure 3 and Figure 5 , Figure 5 yes Figure 2This is a schematic diagram of a partial structure of the electromagnetic iron removal device 100 in the first embodiment. Exemplarily, in this embodiment, the support frame 51 includes a first support plate 511, a second support plate 512, and a plurality of support rods 513 connecting the first support plate 511 and the second support plate 512. The first support plate 511 and / or the second support plate 512 are fixedly connected to the outer shell 10. The excitation module 50 is disposed between the first support plate 511 and the second support plate 512, and located between the plurality of support rods 513 and the inner shell 30. The first support plate 511 is provided with a plurality of first flow guide hole groups 5110 communicating with the refrigerant buffer chamber 601 and the first flow guide channel 501. The second support plate 512 is provided with a plurality of second flow guide hole groups 5120 communicating with the first flow guide channel 501 and the second flow guide channel 502. The plurality of first flow guide hole groups 5110 and the plurality of second flow guide hole groups 5120 are each spaced apart along the circumferential direction Z of the excitation module 50. Thus, on the one hand, the excitation module 50 is connected as a whole through the support frame 51, which improves the integration of the excitation module 50 and facilitates assembly; on the other hand, the support area of ​​the first support plate 511 is relatively large, which improves the stability of the support for the excitation coil 52 and improves the stability of the excitation module 50 during operation.

[0059] For example, in this embodiment, the first support plate 511 has a plurality of first connecting portions 5111 spaced apart on its four edges, and the second support plate 512 has a plurality of second connecting portions 5121 spaced apart on its four edges. Each of the second connecting portions 5121 corresponds one-to-one with the plurality of first connecting portions 5111. Each support rod 513 is connected between the opposing first connecting portions 5111 and second connecting portions 5121. The first support plate 511 is fixedly connected to the outer casing 10. Specifically, the first support plate 511 has a plurality of mounting portions 5112 spaced apart on its four edges. The mounting portions 5112 are evenly distributed among the plurality of first connecting portions 5111 and are fixedly connected to the outer casing 10. For example, the mounting portions 5112 and the first connecting portions 5111 are arranged alternately along the circumferential direction Z of the excitation module 50, that is, one mounting portion 5112 is provided between two adjacent first connecting portions 5111, or two or more mounting portions 5112 are provided between two adjacent first connecting portions 5111. Of course, in some embodiments, the second support plate 512 is fixedly connected to the outer shell 10; or, both the first support plate 511 and the second support plate 512 are fixedly connected to the outer shell 10.

[0060] Please refer to the following: Figure 3 , Figure 5 and Figure 6 , Figure 6 yes Figure 2The electromagnetic iron removal device 100 shown in the figure omits the outer casing 10. In some embodiments, the electromagnetic iron removal device 100 further includes a first supporting protrusion 71 and a plurality of second supporting protrusions 72. The first supporting protrusion 71 is disposed on the end face of the first support plate 511 facing the second support plate 512. The first supporting protrusion 71 is located on the outermost side of the plurality of first guide hole groups 5110 and abuts against the bottom surface of the outermost excitation coil 52 in a ring shape. The plurality of second supporting protrusions 72 are arranged radially from the center of the excitation module 50 and are spaced apart along the circumferential direction Z of the excitation module 50. The second supporting protrusions 72 and the first guide hole groups 5110 are spaced apart along the circumferential direction Z of the excitation module 50. Therefore, on the one hand, the function of the first bearing protrusion 71 and the second bearing protrusion 72 is to ensure the safety redundancy of the excitation module 50 and avoid the excitation module 50 from directly contacting the outer casing 10 and causing greater damage after the first support plate 511 is accidentally damaged; on the other hand, the first bearing protrusion 71 and the second bearing protrusion 72 can lift the excitation coil 52 to a certain height on the first support plate 511, so that the refrigerant flows at the bottom of the excitation coil 52, and allows more refrigerant to enter each of the first heat dissipation channels after flowing out of the first guide hole group 5110 from the refrigerant buffer chamber 601, thereby increasing the flow rate of the refrigerant in the first heat dissipation channels and improving the heat exchange efficiency between the refrigerant and the excitation coil 52; furthermore, based on the fact that the first bearing protrusion 71 is in a ring shape abutting against the bottom surface of the outermost excitation coil 52, the first bearing protrusion 71 can... The magnetic module 50, in the radial direction Y, prevents the refrigerant flowing from the refrigerant buffer chamber 601 to the bottom of the accommodating chamber 105 from flowing directly to the second guide channel 502. Therefore, most of the refrigerant flows through the first guide channel 501 before flowing into the second guide channel 502, thereby allowing more refrigerant flowing into the refrigerant inlet 101 to enter the heat dissipation channel, thus increasing the flow velocity of the refrigerant in the heat dissipation channel and improving the heat exchange efficiency between the refrigerant and the excitation coil 52. On the other hand, based on the multiple second bearing protrusions 72 and multiple first guide hole groups 5110 being alternately arranged along the circumferential direction Z of the excitation module 50, the refrigerant can be more evenly distributed in various areas of the multi-layer excitation coil 52, improving the heat exchange effect of the refrigerant and also providing stability for the multi-layer excitation coil 52, thus improving the stability of the excitation module 50 during operation.

[0061] The first bearing protrusion 71 and the second bearing protrusion 72 can be fixed to the first support plate 511 by adhesive bonding. Alternatively, the first bearing protrusion 71 and the second bearing protrusion 72 can also be fixedly connected to the first support plate 511 by locking structures, integral molding, snap-fitting, or other methods. For example, in this embodiment, the first bearing protrusion 71 and the second bearing protrusion 72 are independently arranged, which facilitates the adaptation of the first bearing protrusion 71 and the second bearing protrusion 72 to different excitation module 50 specifications, reducing the alignment and assembly accuracy between the first bearing protrusion 71 and the second bearing protrusion 72 and the first support plate 511. Of course, in some embodiments, the first bearing protrusion 71 and the second bearing protrusion 72 are integrally molded, thereby improving the assembly efficiency between the first bearing protrusion 71 and the second bearing protrusion 72 and the first support plate 511.

[0062] The first bearing protrusion 71 protrudes at the same height as the second bearing protrusion 72 on the first support plate 511, so that the first bearing protrusion 71 and the second bearing protrusion 72 work together to support the excitation coil 52, thereby improving the stability of the multi-layer excitation coil 52 and enhancing the stability of the excitation module 50 during operation.

[0063] For example, in this embodiment, a plurality of second bearing protrusions 72 and a plurality of first flow guide hole groups 5110 are arranged at intervals along the circumferential direction Z of the excitation module 50. In other words, a first flow guide hole group 5110 is provided between two adjacent second bearing protrusions 72. Of course, in some embodiments, two or more first flow guide hole groups 5110 are provided between two adjacent second bearing protrusions 72. The plurality of second bearing protrusions 72 are located in the area of ​​the first support plate 511 outside the first flow guide hole groups 5110, thereby preventing the second bearing protrusions 72 from blocking the first flow guide hole groups 5110 and reducing the flow efficiency of the refrigerant.

[0064] In the radial direction Y of the excitation module 50, one end of the second bearing protrusion 72 abuts against the first bearing protrusion 71, and the other end of the second bearing protrusion 72 abuts against the inner shell 30. Any two adjacent second bearing protrusions 72 are connected to the inner shell 30 and the first bearing protrusion 71 to form a diversion groove 701 that communicates with the corresponding first guide hole group 5110. The diversion groove 701 is separated from the second guide channel 502 in the radial direction Y of the excitation module 50. Therefore, before entering the first guide channel 501, the refrigerant, under the influence of gravity, will evenly fill the entire refrigerant buffer chamber 601 and then overflow upwards into the diversion groove 701. The refrigerant in the diversion groove 701 then flows upwards to the corresponding first guide channel 501 and begins to wet the excitation coil 52. This allows the refrigerant buffer chamber 601 to stabilize the flow of the refrigerant, reducing the impact caused by pressure fluctuations or flow rate changes, ensuring uniform refrigerant distribution. This allows the refrigerant to evenly exchange heat with the heat generated by the excitation coil 52, avoiding the problem of deformation of the excitation coil 52 due to local temperature differences, and improving the strength of the magnetic field generated by the excitation coil 52 under the action of current. Of course, in some embodiments, in the radial direction Y of the excitation module 50, one end of the second bearing protrusion 72 is spaced apart from the first bearing protrusion 71; and / or, the other end of one end of the second bearing protrusion 72 is spaced apart from the inner shell 30. This allows the refrigerant to flow between two adjacent diversion grooves 701, reducing the pressure generated by the refrigerant within the diversion groove 701.

[0065] Please refer to the following: Figure 3 , Figure 5 and Figure 7 , Figure 7 yes Figure 2 The diagram shows a partial structural embodiment of the electromagnetic iron removal device 100. In some embodiments, the electromagnetic iron removal device 100 further includes at least one third support protrusion 73 coaxially arranged with the first support protrusion 71, each third support protrusion 73 being annularly abutting against the bottom surface of the corresponding excitation coil 52 outside the outermost layer. Thus, on the one hand, both the third support protrusion 73 and the first support protrusion 71 can block the refrigerant flowing from the refrigerant buffer chamber 601 to the bottom of the accommodating chamber 105 from directly flowing into the second guide channel 502 in the radial direction Y of the excitation module 50. Therefore, the refrigerant flows through the first guide channel 501 before flowing into the second guide channel 502, thereby allowing more refrigerant flowing into the refrigerant inlet 101 to enter the heat dissipation channel, thereby increasing the flow rate of the refrigerant in the heat dissipation channel and improving the heat exchange efficiency between the refrigerant and the excitation coil 52. On the other hand, the third support protrusion 73 can support the multi-layer excitation coil 52, improving the stability of the excitation module 50 during operation.

[0066] The third bearing protrusion 73 is laid flat on the first support plate 511 along with the first bearing protrusion 71 and the second bearing protrusion 72. The protrusion height of the third bearing protrusion 73 on the first support plate 511 is the same as that of the first bearing protrusion 71 and the second bearing protrusion 72, so that the third bearing protrusion 73, the first bearing protrusion 71, and the second bearing protrusion 72 work together to support the excitation coil 52, thereby improving the stability of the multi-layer excitation coil 52 and enhancing the stability of the excitation module 50 during operation. The connection method of the first bearing protrusion 71 and the second bearing protrusion 72 can be applied to the connection method of the third bearing protrusion 73 and the second bearing protrusion 72, which will not be described again in this embodiment.

[0067] In some embodiments, the orthographic projections of the first supporting protrusion 71, the second supporting protrusion 72, and the third supporting protrusion 73 on the axial direction X of the excitation module 50 are located outside the orthographic projection of the first flow guide hole group 5110 on the axial direction X of the excitation module 50, thereby preventing the first supporting protrusion 71, the second supporting protrusion 72, and the third supporting protrusion 73 from obstructing the first flow guide hole group 5110 and affecting the flow efficiency of the refrigerant. Of course, in other embodiments, at least one of the orthographic projections of the first supporting protrusion 71, the second supporting protrusion 72, and the third supporting protrusion 73 on the axial direction X of the excitation module 50 is at least partially located within the orthographic projection of the first flow guide hole group 5110 on the axial direction X of the excitation module 50. This application does not specifically limit this embodiment.

[0068] The number of the first guide hole group 5110 corresponds one-to-one with the number of the second guide hole group 5120, and the first guide hole group 5110 and the second guide hole group 5120 are arranged opposite each other in the axial direction X of the excitation module 50. Of course, the number of the first guide hole group 5110 and the number of the second guide hole group 5120 can be different.

[0069] For example, in this embodiment, the first support protrusion 71 includes a plurality of support segments 711, which are alternately spaced along the circumferential direction Z of the excitation module 50. An obstruction opening is formed between two adjacent support segments 711 for the second support protrusion 72 to pass through. Thus, when the plurality of support segments 711 are arranged independently, on the one hand, it facilitates the alignment and assembly of the first support protrusion 71 and the second support protrusion 72; on the other hand, the second support protrusion 72 is embedded between two adjacent support segments 711, thereby preventing the second support protrusion 72 from shifting, improving the stability of the excitation module 50 during operation, and enabling the refrigerant to uniformly exchange heat with the heat generated by the excitation coil 52.

[0070] In some embodiments, multiple support sections 711 are connected along the circumferential direction Z of the excitation module 50 to form an integral structure. The second support protrusion 72 abuts against the inner sidewall of the first support protrusion 71 facing the inner shell 30. Thus, when multiple support sections 711 are integrated into an integral structure, the sealing performance of the diversion groove 701 formed by the connection between the first support protrusion 71 and the first support plate 511 is improved, ensuring that the refrigerant flows from the first guide channel 501 to the second guide channel 502, increasing the refrigerant delivery speed in the first guide channel 501, and improving the heat exchange effect between the refrigerant and the excitation coil 52.

[0071] In some embodiments, the electromagnetic iron removal device 100 further includes a plurality of insulating elements 53. The plurality of insulating elements 53 are arranged at intervals along the radial direction Y of the excitation module 50. Some insulating elements 53 are correspondingly disposed between all adjacent layers of excitation coils 52, and the remaining insulating elements 53 are disposed between the innermost excitation coil 52 and the inner shell 30. Each insulating element 53 includes a plurality of insulating strips 531. The plurality of insulating strips 531 are arranged at intervals along the circumferential direction Z of the excitation module 50 within the first flow channel 501. Therefore, on the one hand, the insulating strip 531 can play a certain role in heat insulation, preventing heat transfer between adjacent excitation coils 52, avoiding local overheating of the excitation module 50, and improving the smoothness of the refrigerant flow in each first flow channel 501, thereby improving the heat exchange efficiency between the refrigerant and the excitation coil 52, and improving the uniformity of cooling and heat dissipation of each excitation coil 52. On the other hand, an insulating element 53 is provided between two adjacent layers of excitation coils 52, thereby avoiding the problem of short circuits caused by contact or arc discharge between adjacent excitation coils 52, and avoiding mutual interference of current between adjacent coils, ensuring uniform magnetic field distribution. Furthermore, the insulating strip 531 can play a certain role in damping, reducing the vibration and noise of the excitation coil 52 caused by current changes.

[0072] The insulating strip 531 is made of an insulating non-magnetic material. Insulating non-magnetic materials include, but are not limited to, polymers such as polyethylene and polystyrene. The orthogonal projection of the insulating strip 531 in the axial direction X of the excitation module 50 is at least partially located within the first guide hole group 5110, thereby enabling the insulating strip 531 to guide the flow of the refrigerant, improving the refrigerant's delivery speed in the first guide channel 501 and enhancing the heat exchange effect between the refrigerant and the excitation coil 52. Of course, the orthogonal projection of the insulating strip 531 in the axial direction X of the excitation module 50 may entirely be located outside the first guide hole group 5110; this embodiment of the application does not specifically limit this.

[0073] In the axial direction X of the excitation module 50, the refrigerant outlet 102 is higher than the second support plate 512. Therefore, by placing the refrigerant outlet 102 at a higher position in the outer casing 10, the refrigerant can completely wet the excitation coil 52, thereby improving the heat exchange efficiency between the refrigerant and the excitation module 50 and improving the heat dissipation and cooling effect of the refrigerant on all excitation coils 52. Specifically, when the electromagnetic iron removal device 100 starts to dissipate heat from the excitation coil 52 by using refrigerant, the refrigerant gradually wets the gap between the two adjacent layers of excitation coil 52 (i.e., the first flow channel 501) through the refrigerant inlet 101, and then flows into the outer area of ​​the excitation coil 52 (i.e., the second flow channel 502) through the second flow hole group 5120 provided on the second support plate 512, wetting the outer wall of the outermost excitation coil 52. Finally, the filling height of the refrigerant in the accommodating cavity 105 is greater than the lower end height of the refrigerant outlet 102, and the refrigerant flows out from the refrigerant outlet 102. After being cooled by the external cooling device 300, it is re-immersed in from the refrigerant inlet 101, forming a cooling cycle.

[0074] Please participate as well. Figure 3 and Figure 8 , Figure 8 yes Figure 2 A schematic diagram of the structure of the electromagnetic iron removal device 100 is shown below. In some embodiments, a refrigerant outlet 106 is also provided at the bottom of the housing 10. The refrigerant outlet 106 connects the accommodating cavity 105 and the external valve body 20. Therefore, the refrigerant can easily be discharged from the accommodating cavity 105 under the action of gravity, improving the discharge efficiency and effect of the refrigerant. Specifically, when the electromagnetic iron removal device 100 enters the cooling mode, the external valve body 20 closes the refrigerant outlet 106 and allows the refrigerant to fill the accommodating cavity 105 to wet the excitation coil 52; when the electromagnetic iron removal device 100 enters the non-cooling mode, the external valve body 20 opens the refrigerant outlet 106, allowing the refrigerant in the accommodating cavity 105 to be discharged, thereby enabling users to perform maintenance or refrigerant replacement on the excitation coil 52.

[0075] In some embodiments, the bottom of the housing 10 includes a first region 1101 and a second region 1102. The first region 1101 is correspondingly disposed to the refrigerant buffer chamber 601, and the second region 1102 is located outside the first region 1101. The refrigerant inlet 101 is located in the first region 1101, and the refrigerant outlet 106 is located in the second region 1102. Thus, on the one hand, the refrigerant after heat exchange with the excitation coil 52 can be discharged from the refrigerant outlet 106 without affecting the operation of supplying refrigerant from the refrigerant outlet 106 to the first flow channel 501; on the other hand, after the external valve body 20 opens the refrigerant outlet 106, the refrigerant between the inner sidewall of the housing 10 and the outer sidewall of the outermost excitation coil 52 (i.e., within the second flow channel 502) is discharged from the refrigerant outlet 106, while the refrigerant located in the first flow channel 501 can be discharged through the external flow channel 103. Of course, in some embodiments, the refrigerant outlet 106 is located in the first region 1101; or, there may be two refrigerant outlets 106, one of which is located in the first region 1101 and the other is located in the second region 1102. This application does not make specific limitations.

[0076] In some embodiments, the electromagnetic iron removal device 100 further includes a detection sensor 80. The detection sensor 80 is used to detect the immersion height of the excitation coil 52 in the refrigerant along the axial direction X of the excitation module 50; and / or to detect the temperature and / or flow rate of the refrigerant discharged from the refrigerant outlet 102. Thus, when the detection sensor 80 is used to detect the immersion height of the excitation coil 52 in the refrigerant along the axial direction X of the excitation module 50, the amount of refrigerant in the accommodating cavity 105 is ensured, thereby guaranteeing that the refrigerant provides good heat dissipation and cooling effect to the excitation coil 52.

[0077] In some embodiments, the detection sensor 80 may include a first sensor 81, which may be configured as a level gauge for detecting the refrigerant level in the accommodating cavity 105. Exemplarily, in this embodiment, a detection port 107 is provided on the top of the housing 10. The first sensor 81 is located at the detection port 107 and extends into the accommodating cavity 105. The level gauge may be, but is not limited to, an ultrasonic level gauge, a radar level gauge, a laser level gauge, a photoelectric level gauge, etc. Thus, on the one hand, the level gauge is installed at the detection port 107 on the top of the housing 10, thereby eliminating the need for large-scale modifications to the structure of the housing 10 and facilitating daily maintenance and repair of the level gauge, simplifying assembly; on the other hand, the level gauge being installed on the top of the housing 10 prevents direct contact with the refrigerant (e.g., oil), reducing the risk of contamination. Specifically, the detection port 107 may be located on the top wall of the housing 10. Of course, the detection port 107 can also be set on the top of the side wall of the housing 10. The setting of the detection port 107 is not specifically limited in this embodiment.

[0078] In some embodiments, the electromagnetic iron removal device 100 further includes an oil pump 90. The oil pump 90 is connected to a level gauge and is used to control the start and stop of the oil pump 90 based on the current liquid level detected by the level gauge. For example, when the current liquid level is lower than a set value, the oil pump 90 is started to replenish oil into the accommodating cavity 105; when the current liquid level is higher than the set value, the oil pump 90 is stopped to prevent oil overflow and ensure the safe and efficient operation of the electromagnetic iron removal device 100. The oil pump 90 is mounted on the top wall of the housing 10, thereby facilitating its assembly.

[0079] In other embodiments, the detection sensor 80 may further include a second sensor 82, which is configured as a temperature and flow rate detection sensor. Specifically, the second sensor 82 may be configured as an integrated temperature and flow rate detection sensor; in other words, the integrated temperature and flow rate detection sensor integrates temperature and flow rate measurement functions, thus possessing advantages such as integrated design, high precision, multifunctionality, real-time monitoring, reduced maintenance costs, energy saving and environmental protection, and adaptability to complex working conditions. For example, in this embodiment, the external flow channel 103 is provided with an installation port 108, and the second sensor 82 can be installed at the installation port 108. Of course, in some embodiments, the integrated temperature and flow rate detection sensor may also be installed on the housing 10 and positioned near the refrigerant outlet 102. It should be noted that the placement position of the integrated temperature and flow rate detection sensor is not limited in this application; the integrated temperature and flow rate detection sensor can be set according to actual conditions. The integrated temperature and flow rate detection sensor includes, but is not limited to, thermal flow meters, ultrasonic flow meters, electromagnetic flow meters, turbine flow meters, etc.

[0080] Of course, in some other embodiments, the second sensor 82 can also be configured as a separate temperature and flow rate sensor, in other words, the temperature sensor and the flow rate sensor are independent of each other, thereby meeting the requirements for precise temperature or flow rate measurement and reducing production costs.

[0081] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. 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 application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An electromagnetic iron removal device (100), characterized in that, The utility model relates to a kind of magnetic field generating device, including: Housing (10), the bottom of the housing (10) is provided with refrigerant inlet (101); Inner shell (30), the inner shell (30) is arranged in the housing (10), and with the housing (10) form accommodating cavity (105) with the refrigerant inlet (101) communication, the inner shell (30) is provided with the iron removal cavity (301) isolated with the accommodating cavity (105) arrangement, the iron removal cavity (301) is used to accommodate the material to be processed, and magnetosensitive element (40) for adsorbing ferromagnetic object in the material to be processed is installed; Excitation module (50), the excitation module (50) is arranged in the accommodating cavity (105), and the excitation module (50) includes support frame (51) and the multilayer excitation coil (52) arranged on the support frame (51), the support frame (51) is fixedly connected with the housing (10), the first flow channel (501) is formed between adjacent two layers of the excitation coil (52) and / or between the inner side wall of the excitation module (50) and the outer side wall of the inner shell (30), and the outer side wall and top wall of the excitation module (50) and the inner wall of the housing (10) form the second flow channel (502) communicated with the first flow channel (501); Partition (60), the partition (60) is annularly arranged between the bottom wall of the housing (10) and the support frame (51), and forms refrigerant buffer cavity (601) with the bottom wall of the housing (10) and the support frame (51), and the refrigerant buffer cavity (601) is communicated with the refrigerant inlet (101) and the first flow channel (501).

2. Electromagnetic iron removal device (100) according to claim 1, characterized in that The top of the housing (10) is provided with refrigerant outlet (102), and the refrigerant outlet (102) and the refrigerant inlet (101) are communicated by external flow channel (103) provided with external cooling equipment (300), and the refrigerant inlet (101), the refrigerant buffer cavity (601), the first flow channel (501), the second flow channel (502), the refrigerant outlet (102), the external flow channel (103) are sequentially connected to form refrigerant circuit (1001).

3. Electromagnetic iron removal device (100) according to claim 1, characterized in that The partition (60) includes first partition plate (61) and second partition plate (62), the first partition plate (61) and the second partition plate (62) are coaxially nested and spaced apart, and form the refrigerant buffer cavity (601) with the bottom wall of the housing (10) and the support frame (51) together.

4. The electromagnetic iron removal device (100) according to claim 1, characterized in that, All the first flow channel (501) is communicated with the refrigerant buffer cavity (601), and the orthographic projection of at least part of the first flow channel (501) in the axial direction (X) of the excitation module (50) is located in the orthographic projection of the refrigerant buffer cavity (601) in the axial direction (X) of the excitation module (50).

5. The electromagnetic iron removal device (100) according to claim 2, characterized in that, The support frame (51) comprises a first support plate (511), a second support plate (512) and a plurality of support rods (513) connecting the first support plate (511) and the second support plate (512), the first support plate (511) and / or the second support plate (512) are fixedly connected with the shell (10), the excitation module (50) is arranged between the first support plate (511) and the second support plate (512) and located between the plurality of support rods (513) and the inner shell (30), the first support plate (511) is provided with a plurality of first flow guide hole groups (5110) in communication with the refrigerant buffer cavity (601) and the first flow guide channel (501), the second support plate (512) is provided with a plurality of second flow guide hole groups (5120) in communication with the first flow guide channel (501) and the second flow guide channel (502), and the plurality of first flow guide hole groups (5110) and the plurality of second flow guide hole groups (5120) are respectively arranged in the circumferential direction (Z) of the excitation module (50).

6. Electromagnetic iron removal device (100) according to claim 5, characterized in that The electromagnetic iron removal device (100) further comprises a first bearing protrusion (71) and a plurality of second bearing protrusions (72), the first bearing protrusion (71) is arranged on the end face of the first support plate (511) facing the second support plate (512), the first bearing protrusion (71) is located at the outermost side of the plurality of first flow guide hole groups (5110) and abuts the bottom surface of the outermost excitation coil (52) in a ring shape, and the plurality of second bearing protrusions (72) are arranged radially from the center of the excitation module (50) and are arranged in the circumferential direction (Z) of the excitation module (50), the second bearing protrusions (72) are arranged in the circumferential direction (Z) of the excitation module (50) and are arranged in the circumferential direction (Z) of the excitation module (50).

7. Electromagnetic iron removal device (100) according to claim 6, characterized in that The electromagnetic iron removal device (100) further comprises at least one third bearing protrusion (73) coaxially arranged with the first bearing protrusion (71), each third bearing protrusion (73) abuts the bottom surface of the corresponding excitation coil (52) in a ring shape.

8. Electromagnetic iron removal device (100) according to claim 6, characterized in that The first bearing protrusion (71) comprises a plurality of bearing segments (711), the plurality of bearing segments (711) are alternately and spacedly arranged in the circumferential direction (Z) of the excitation module (50), and the avoidance opening for the second bearing protrusion (72) is formed between the adjacent two bearing segments (711); or, the plurality of bearing segments (711) are connected in the circumferential direction (Z) of the excitation module (50) and form an integral structure.

9. Electromagnetic iron removal device (100) according to claim 1, characterized in that The electromagnetic iron removal device (100) further comprises a plurality of insulation pieces (53), the plurality of insulation pieces (53) are arranged in a radial direction (Y) of the excitation module (50), part of the insulation pieces (53) are arranged between every two adjacent layers of the excitation coils (52), and the rest of the insulation pieces (53) are arranged between the innermost layer of the excitation coils (52) and the inner shell (30), each of the insulation pieces (53) comprises a plurality of insulation strips (531), and the plurality of insulation strips (531) are arranged in a circumferential direction (Z) of the excitation module (50) in the first flow channel (501).

10. The electromagnetic iron removal device (100) according to claim 5, characterized in that, In an axial direction (X) of the excitation module (50), the refrigerant outlet (102) is higher than the second support plate (512).

11. Electromagnetic iron removal device (100) according to claim 1, characterized in that The bottom of the shell (10) is further provided with a refrigerant discharge outlet (106), the refrigerant discharge outlet (106) is communicated with the accommodating cavity (105) and an external valve body (20); the bottom of the shell (10) comprises a first area (1101) and a second area (1102), the first area (1101) is arranged corresponding to the refrigerant buffer cavity (601), the second area (1102) is located outside the first area (1101), the refrigerant inlet (101) is located in the first area (1101), and the refrigerant discharge outlet (106) is located in the second area (1102).

12. Electromagnetic iron removal device (100) according to claim 1, characterized in that The electromagnetic iron removal device (100) further comprises a detection sensor (80), the detection sensor (80) is used for detecting the immersion height of the excitation coil (52) in the refrigerant in the axial direction (X) of the excitation module (50); and / or, for detecting the temperature and / or flow rate of the refrigerant discharged by the refrigerant outlet (102).

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