Permanent magnet heating device

Abstract

The present application relates to the technical fields of metal rod heating, and particularly relates to a permanent magnet heating device, which comprises a permanent magnet heating mechanism, a feeding mechanism and a discharging mechanism, the permanent magnet heating mechanism is used for heating the metal rod passing through the permanent magnet heating mechanism; the feeding mechanism is used for continuously feeding the metal rod to the permanent magnet heating mechanism; and the discharging mechanism is used for continuously discharging the metal rod from the permanent magnet heating mechanism. Compared with the traditional permanent magnet heating device, one metal rod after another can be continuously heated, so that each metal rod can be quickly and uniformly heated to the required temperature, the temperature difference in the axial direction and the radial direction of each metal rod is reduced, the phenomenon that the surface of the metal rod is overheated and the temperature of the core of the metal rod is not up to the standard is avoided, the heating efficiency and energy efficiency are improved, the production rhythm and product yield are improved, and the energy consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of metal rod heating technology, and more particularly to a permanent magnet heating device. Background Technology

[0002] Permanent magnet heating is a new and advanced heating method. As soon as it appeared, it attracted the attention and favor of the metal industry, leading to the development of permanent magnet heating devices for heating metal rods.

[0003] Traditional permanent magnet heating devices are not suitable for heating continuously fed metal rods, which restricts the production cycle. Summary of the Invention

[0004] This invention provides a permanent magnet heating device to solve the problem that traditional permanent magnet heating devices are not suitable for heating continuously fed metal rods, which restricts the production cycle.

[0005] This invention provides a permanent magnet heating device, comprising: A permanent magnet heating mechanism is used to heat a metal rod passing through the permanent magnet heating mechanism; The feeding mechanism is used to feed metal rods to the permanent magnet heating mechanism; The feeding mechanism is used to transfer the metal rod from the permanent magnet heating mechanism.

[0006] In some embodiments, the permanent magnet heating mechanism includes: There are multiple permanent magnet heating units arranged sequentially, each used to heat a metal rod.

[0007] In some embodiments, each permanent magnet heating unit includes: A magnetic cylinder has a channel through which a metal rod passes and is able to rotate about its own axis; Multiple permanent magnet rings are installed on the inner wall of the magnetic cylinder along the axial direction of the cylinder, and each ring can rotate with the cylinder.

[0008] In some embodiments, each permanent magnet ring includes: The first permanent magnet block consists of multiple blocks. There are multiple second permanent magnet blocks, which are arranged alternately with multiple first permanent magnet blocks around the circumference of the permanent magnet ring; a third permanent magnet block is sandwiched between each second permanent magnet block and each first permanent magnet ring; The N pole of each first permanent magnet block faces the radial outer side of the permanent magnet ring; the N pole of each second permanent magnet block faces the radial inner side of the permanent magnet ring; and the N pole of each third permanent magnet block faces the adjacent second permanent magnet block.

[0009] In some embodiments, there are three permanent magnet heating units, namely a first permanent magnet heating unit, a second permanent magnet heating unit, and a third permanent magnet heating unit; the rotation direction of the magnetic cylinder of the third permanent magnet heating unit is opposite to that of the magnetic cylinder of the second permanent magnet heating unit; the rotation direction of the magnetic cylinder of the first permanent magnet heating unit is the same as that of the magnetic cylinder of the third permanent magnet heating unit; the rotation speed of the magnetic cylinders of the third permanent magnet heating unit and the second permanent magnet heating unit is the same; the ratio of the rotation speed of the magnetic cylinder of the first permanent magnet heating unit to the rotation speed of the magnetic cylinder of the third permanent magnet heating unit is 2:5-3:5.

[0010] In some embodiments, each permanent magnet heating unit further includes: The first guide component is used to guide the movement of the metal rod; The driver, connected to the magnetic cylinder, is used to drive the magnetic cylinder to rotate.

[0011] In some embodiments, the feeding mechanism and the unloading mechanism are provided with a second guide member; the second guide member is used to guide the movement of the metal rod.

[0012] In some embodiments, it also includes: The first insulated compartment is located on the feeding mechanism; And / or, a second heat preservation chamber is mounted on the permanent magnet heating mechanism; And / or, a temporary storage rack for loading, located on one side of the loading mechanism; And / or, a waste storage rack, located on one side of the unloading mechanism.

[0013] In some embodiments, it also includes: The heat transfer component is installed on the permanent magnet heating mechanism and the feeding mechanism to transfer heat.

[0014] In some embodiments, the heat transfer component includes: A heat-absorbing ring is placed around the outer periphery of a heated metal rod to absorb radiant heat. A uniform heating ring is arranged around the outer periphery of the metal rod to be heated; There are multiple first heat pipes, which are evenly distributed around the circumference of the heat absorption ring; the evaporation end of each first heat pipe is connected to the heat absorption ring, and the condensation end is connected to the heat equalization ring. The heat release ring is fitted around the outer periphery of the metal rod to be heated and is located inside the heat equalization ring, and is used to preheat the metal rod. The second heat pipe consists of multiple pipes, with the evaporation end connected to the heat distribution ring and the condensation end connected to the heat release ring.

[0015] The beneficial effects of this invention are as follows: The permanent magnet heating device of this invention, by setting a permanent magnet heating mechanism, a feeding mechanism, and a discharging mechanism, wherein the permanent magnet heating mechanism is used to heat the metal rods passing through the permanent magnet heating mechanism, the feeding mechanism is used to continuously convey the metal rods to the permanent magnet heating mechanism, and the discharging mechanism is used to continuously transfer the metal rods from the permanent magnet heating mechanism, compared with the traditional permanent magnet heating device, can continuously heat one large-diameter and long metal rod after another, so that each metal rod can be quickly and uniformly heated to the required temperature, reducing the temperature difference between the axial and radial directions of each metal rod, avoiding the phenomenon of overheating of the metal rod surface and the failure of the rod core temperature to meet the standard, improving heating efficiency and energy efficiency, improving production cycle and product yield, and reducing energy consumption. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of some specific embodiments of a permanent magnet heating device of the present invention; Figure 2 yes Figure 1 The diagram shows the structure of the permanent magnet heating mechanism in the permanent magnet heating device. Figure 3 yes Figure 2 A cross-sectional view of the permanent magnet heating mechanism shown; Figure 4 yes Figure 2 The diagram shows the structure of the permanent magnet ring in the permanent magnet heating mechanism. Figure 5 This is a schematic diagram of the combined structure of the permanent magnet heating mechanism and the heat transfer components; Figure 6 This is a schematic diagram of the heat transfer component.

[0017] In the attached figures, 110 is a permanent magnet heating mechanism; 111 is a first permanent magnet heating unit; 1111 is a magnetic cylinder; 1112 is a permanent magnet ring; 11121 is a first permanent magnet block; 11122 is a second permanent magnet block; 11123 is a third permanent magnet block; 1113 is a first guide; 1114 is a driver; 112 is a second permanent magnet heating unit; 113 is a third permanent magnet heating unit; 120 is a feeding mechanism; 130 is a discharging mechanism; 131 is a second guide; 140 is a feeding temporary storage rack; 150 is a waste temporary storage rack; 160 is a heat transfer assembly; 161 is a heat absorption ring; 162 is a first heat pipe; 163 is a heat equalization ring; 164 is a heat dissipation ring; 165 is a second heat pipe; and 200 is a metal rod. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] As described in the background section, permanent magnet heating is a new and advanced heating method. Upon its emergence, permanent magnet heating immediately attracted attention and favor from the metal industry, leading to the development of permanent magnet heating devices for heating metal bars. However, traditional permanent magnet heating devices are not suitable for heating continuously fed metal bars, thus limiting production cycle time.

[0020] To solve the above problems, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This invention provides a permanent magnet heating device, including a permanent magnet heating mechanism 110, a feeding mechanism 120, and a discharging mechanism 130. The permanent magnet heating mechanism 110 is used to heat metal rods 200 passing through it. The feeding mechanism 120 is used to continuously feed metal rods 200 to the permanent magnet heating mechanism 110. The discharging mechanism 130 is used to continuously transfer metal rods 200 from the permanent magnet heating mechanism 110. Compared with traditional permanent magnet heating devices, this invention can continuously heat one large-diameter and long metal rod 200 after another, allowing each metal rod 200 to be rapidly and uniformly heated to the required temperature. This reduces the axial and radial temperature difference between each metal rod 200, preventing overheating of the metal rod surface while the core temperature remains below standard, thus improving heating efficiency and energy efficiency, improving production cycle time and product yield, and reducing energy consumption.

[0021] Specifically, in the example, such as Figure 1 , Figure 2 and Figure 3As shown, the permanent magnet heating mechanism 110 includes a frame and multiple permanent magnet heating units. The multiple permanent magnet heating units are sequentially mounted on the frame and are used to heat the metal rod 200. The frame can effectively support and fix the multiple permanent magnet heating units. The multiple permanent magnet heating units operate continuously and cooperate with each other to achieve the purpose of staged heating, enabling each metal rod 200 to quickly heat up to the required temperature, greatly improving heating efficiency. Each permanent magnet heating unit includes a magnetic cylinder 1111 and multiple permanent magnet rings 1112. The magnetic cylinder 1111 forms a channel for the metal rod 200 to pass through. The magnetic cylinder 1111 can rotate around its own axis. The multiple permanent magnet rings 1112 are mounted on the inner wall of the magnetic cylinder 1111 along the axial direction of the magnetic cylinder 1111, and can rotate with the magnetic cylinder 1111 to generate a rotating magnetic field, thereby heating the metal rod 200, increasing the heating rate, improving product quality, and making the heat distribution more uniform. Each permanent magnet heating unit also includes a first guide 1113 and a driver 1114. The first guide 1113 serves as a guide to guide the movement of the metal rod 200, improving the smoothness of the movement of the metal rod 200. The driver 1114 is connected to the magnetic cylinder 1111 and is used to drive the magnetic cylinder 1111 to rotate, thereby driving each permanent magnet ring 1112 to rotate, and thus heating the metal rod 200.

[0022] Preferably, there are three permanent magnet heating units: a first permanent magnet heating unit 111, a second permanent magnet heating unit 112, and a third permanent magnet heating unit 113. It should be noted that each metal rod 200 passes through the third permanent magnet heating unit 113, the second permanent magnet heating unit 112, and the first permanent magnet heating unit 111 sequentially during its forward movement. Specifically, the third permanent magnet heating unit 113 preheats each part of each rod, the second permanent magnet heating unit 112 performs secondary heating on each part of each rod, and the first permanent magnet heating unit 111 further heats and maintains the temperature of each part of each metal rod 200. This three-stage heating method achieves the goal of progressive heating, allowing each metal rod 200 to quickly reach the required temperature. It should be noted that the rotation direction of the magnetic cylinder 1111 of the third permanent magnet heating unit 113 is opposite to that of the magnetic cylinder 1111 of the second permanent magnet heating unit 112, and the rotation direction of the magnetic cylinder 1111 of the first permanent magnet heating unit 111 is the same as that of the magnetic cylinder 1111 of the third permanent magnet heating unit 113, so as to cancel out the torque generated on the metal rod 200 and prevent the metal rod 200 from rotating. The rotational speeds of the magnetic cylinders 1111 of the third permanent magnet heating unit 113 and the second permanent magnet heating unit 112 are the same, and the ratio of the rotational speed of the magnetic cylinders 1111 of the first permanent magnet heating unit 111 to that of the magnetic cylinder 1111 of the third permanent magnet heating unit 113 is 2:5-3:5. Specifically, the ratio of the rotational speed of the magnetic cylinder 1111 of the first permanent magnet heating unit 111 to that of the magnetic cylinder 1111 of the third permanent magnet heating unit 113 is 1:2. In this way, surface overheating at the front of the metal rod 200 in the direction of travel can be effectively avoided, the temperature distribution of the metal rod 200 in the axial and radial directions can be optimized, and the quality and yield of the product can be improved.

[0023] Preferably, each permanent magnet heating unit includes a magnetic cylinder 1111 and four permanent magnet rings 1112. Two permanent magnet rings 1112 are fixed side by side on the inner wall of one end of the magnetic cylinder 1111, and the other two permanent magnet rings 1112 are fixed side by side on the inner wall of the other end of the magnetic cylinder 1111, so as to optimize the heating effect on the metal rod 200.

[0024] Preferably, such as Figure 4As shown, each permanent magnet ring 1112 includes multiple first permanent magnet blocks 11121, multiple second permanent magnet blocks 11122, and multiple third permanent magnet blocks 11123. The multiple second permanent magnet blocks 11122 and the multiple first permanent magnet blocks 11121 are alternately arranged around the circumference of the permanent magnet ring 1112. A third permanent magnet block 11123 is sandwiched between each second permanent magnet block 11122 and each first permanent magnet ring 1112. It should be noted that the number of third permanent magnet blocks 11123 included in each permanent magnet ring 1112 is twice the number of first permanent magnet blocks 11121 / second permanent magnet blocks 11122. In this arrangement, the N pole of each first permanent magnet block 11121 faces the radially outer side of the permanent magnet ring 1112, the N pole of each second permanent magnet block 11122 faces the radially inner side of the permanent magnet ring 1112, and the N pole of each third permanent magnet block 11123 faces the adjacent second permanent magnet block 11122 and is circumferentially oriented towards the permanent magnet ring 1112. By using a Hellbeck array to arrange the permanent magnet blocks, the magnetic field lines converge on the inner side of each permanent magnet ring 1112, resulting in a stronger magnetic field on the inner side of each permanent magnet ring 1112 and a relatively weaker magnetic field on the outer side. This fully utilizes the magnetic field formed by the limited combination of permanent magnet blocks, which is more conducive to uniformly heating the metal rod 200.

[0025] Preferably, the first permanent magnet block 11121, the second permanent magnet block 11122, and the third permanent magnet block 11123 have the same size. The longitudinal section of the first permanent magnet block 11121, the second permanent magnet block 11122, and the third permanent magnet block 11123 is all sector-shaped.

[0026] Preferably, each permanent magnet heating unit includes three, four, or five first guide members 1113. The three, four, or five first guide members 1113 are all disposed at one end of the magnetic cylinder 1111 and are evenly distributed around the outer periphery of the metal rod 200, respectively abutting against the outer wall of the metal rod 200 to constrain the travel direction of the same metal rod 200. Specifically, each first guide member 1113 includes a first roller mounting seat and a first roller. The first roller mounting seat is mounted on the driver 1114. The first roller is rotatably mounted on the first roller mounting seat, and its sidewall can abut against the outer wall of the metal rod 200, ensuring smooth feeding and discharging, while maintaining a certain gap between the metal rod 200 and the permanent magnet ring 1112, facilitating airflow within the gap for air cooling of the permanent magnet heating unit.

[0027] Preferably, the driver 1114 of each permanent magnet heating unit can be a linear driver such as a hydraulic cylinder, pneumatic cylinder, or electric push rod, connected to the magnetic cylinder 1111 via a linear-to-rotary mechanism to drive the magnetic cylinder 1111 to rotate. The driver 1114 of each permanent magnet heating unit can also be a rotary driver such as a servo motor, stepper motor, or hollow motor. When the driver 1114 of each permanent magnet heating unit is a servo motor or stepper motor, it is connected to one end of the magnetic cylinder 1111 via pulleys / gears and belts / racks to drive the magnetic cylinder 1111 to rotate; when the driver 1114 of each permanent magnet heating unit is a hollow motor, the mover is directly fixedly connected to the outer wall of the magnetic cylinder 1111 to drive the magnetic cylinder 1111 to rotate. Using a hollow motor reduces the number of transmission components.

[0028] In some practical applications, the permanent magnet heating mechanism 110 includes three permanent magnet heating units. These three units are designated as a first permanent magnet heating unit 111, a second permanent magnet heating unit 112, and a third permanent magnet heating unit 113. Each permanent magnet heating unit includes a magnetic cylinder 1111, four permanent magnet rings 1112, four first guide members 1113, and a driver 1114. Two permanent magnet rings 1112 are fixed side-by-side on the inner wall of one end of the magnetic cylinder 1111, and the other two are fixed side-by-side on the inner wall of the other end of the magnetic cylinder 1111. The four first guide members 1113 are all located at one end of the magnetic cylinder 1111 and are evenly distributed around the outer periphery of the metal rod 200, respectively abutting against the outer wall of the metal rod 200. The driver 1114 is a hollow motor, and the rotor of the hollow motor is fixedly connected to the outer wall of the magnetic cylinder 1111 to drive the magnetic cylinder 1111 to rotate. Each permanent magnet ring 1112 includes a plurality of first permanent magnet blocks 11121, a plurality of second permanent magnet blocks 11122, and a plurality of third permanent magnet blocks 11123. The plurality of second permanent magnet blocks 11122 and the plurality of first permanent magnet blocks 11121 are alternately arranged circumferentially around the permanent magnet ring 1112. A third permanent magnet block 11123 is sandwiched between each second permanent magnet block 11122 and each first permanent magnet ring 1112. The N-pole of each first permanent magnet block 11121 faces radially outward from the permanent magnet ring 1112, the N-pole of each second permanent magnet block 11122 faces radially inward from the permanent magnet ring 1112, and the N-pole of each third permanent magnet block 11123 faces the adjacent second permanent magnet block 11122. During its forward movement, each metal rod 200 passes sequentially through the magnetic cylinder 1111 of the third permanent magnet heating unit 113, the magnetic cylinder 1111 of the second permanent magnet heating unit 112, and the magnetic cylinder 1111 of the first permanent magnet heating unit 111. The third permanent magnet heating unit 113 can preheat each part of each rod, the second permanent magnet heating unit 112 can perform secondary heating on each part of each rod, and the first permanent magnet heating unit 111 can heat and maintain the temperature of each part of each metal rod 200, thus achieving the purpose of staged heating. The rotation direction of the magnetic cylinder 1111 of the first permanent magnet heating unit 111 is opposite to that of the magnetic cylinder 1111 of the second permanent magnet heating unit 112, and the rotation direction of the magnetic cylinder 1111 of the first permanent magnet heating unit 111 is the same as that of the magnetic cylinder 1111 of the third permanent magnet heating unit 113. The magnetic cylinders 1111 of the third permanent magnet heating unit 113 and the second permanent magnet heating unit 112 rotate at the same speed of 1000 rpm. The magnetic cylinder 1111 of the first permanent magnet heating unit 111 rotates at 500 rpm, which can continuously and rapidly heat metal rods 200 (non-magnetic metal rods such as aluminum rods or copper rods) with large diameter and long length (diameter up to 300 mm, length up to 500 mm-1200 mm).For example, heating an aluminum rod with a diameter of 300 mm and a length of 1200 mm from 0°C to 500°C takes only 120 seconds, which greatly improves heating efficiency, production cycle time and energy consumption. At the same time, it ensures that the temperature difference in the length direction and the radial direction of the same cross section of the aluminum rod is small, which improves product quality. In addition, it effectively avoids overheating and burning of the surface of the metal rod 200, which improves the product yield.

[0029] Specifically, in the example, such as Figure 1 As shown, the permanent magnet heating device also includes a loading temporary storage rack 140 and / or a waste temporary storage rack 150 and / or a first insulation chamber and / or a second insulation chamber. The loading temporary storage rack 140 is located on one side of the loading mechanism 120 and is used to temporarily store the metal rods 200 to be processed. The waste temporary storage rack 150 is located on one side of the unloading mechanism 130 and is used to temporarily store the waste metal rods 200 generated during production. The first insulation chamber is located on the unloading mechanism 130 and is used to keep the heated metal rods 200 warm and reduce heat diffusion into the working environment. The second insulation chamber is located on the first permanent magnet heating unit 111 of the permanent magnet heating mechanism 110 and is used to keep the metal rods 200 being heated and passing through the first permanent magnet heating unit 111 warm, and to effectively prevent overheating and burning of the surface of the metal rods 200, thereby improving product yield.

[0030] Preferably, a second guide 131 is provided on the feeding mechanism 120 and the unloading mechanism 130. The second guide 131 plays a guiding role and is used to guide the metal rod 200 to move on the feeding mechanism 120 / unloading mechanism 130, thereby improving the smoothness of the movement of the metal rod 200.

[0031] Preferably, the feeding mechanism 120 is provided with a feeding frame, and a plurality of second guide members 131 are evenly installed on the top of the feeding frame along its length. The unloading mechanism 130 is provided with a unloading frame, and a plurality of second guide members 131 are also evenly installed on the top of the unloading frame along its length. Each second guide member 131 includes a second roller mounting seat and a second roller. The second roller mounting seat is mounted on the feeding / unloading frame. The second roller is rotatably mounted on the second roller mounting seat, and its sidewall can abut against the outer wall of the metal rod 200, so that the metal rod 200 can only move axially and cannot rotate, and is used to support and convey the metal rod 200, thereby improving the smoothness of the movement of the metal rod 200.

[0032] Preferably, the first insulated compartment is installed on top of the unloading rack.

[0033] Preferably, the second heat-insulating chamber cover is located outside the first permanent magnet heating unit 111.

[0034] Specifically, in the example, such as Figure 5 and Figure 6As shown, the permanent magnet heating device also includes a heat transfer component 160. The heat transfer component 160 is disposed on the permanent magnet heating mechanism 110 and the feeding mechanism 120, and is used to transfer heat to the metal rod 200 to be heated, preheating the metal rod 200 and improving heating efficiency and production cycle time. The heat transfer component 160 includes a heat-absorbing ring 161, multiple first heat pipes 162, a heat-uniforming ring 163, a heat-dissipating ring 164, and multiple second heat pipes 165. The heat-absorbing ring 161 is arranged around the outer periphery of the heated metal rod 200 on the frame or unloading rack to absorb radiant heat. The heat-uniforming ring 163 is arranged around the outer periphery of the metal rod 200 to be heated on the feeding rack, which facilitates uniform heat conduction. The multiple first heat pipes 162 are evenly distributed around the circumference of the heat-absorbing ring 161. The evaporation end of each first heat pipe 162 is connected to the heat absorption ring 161, and the condensation end is connected to the heat distribution ring 163, enabling rapid heat transfer from the heat absorption ring 161 to the heat distribution ring 163. A heat release ring 164 is fitted around the outer circumference of the metal rod 200 to be heated on the feeding rack and is located inside the heat distribution ring 163, used to release heat to the metal rod 200 for preheating. The evaporation ends of multiple second heat pipes 165 are connected to the heat distribution ring 163, and the condensation ends are connected to the heat release ring 164, enabling rapid heat transfer from the heat distribution ring 163 to the heat release ring 164. It should be noted that the thermal conductivity of heat pipes is much greater than that of metal materials; therefore, heat can be transferred more quickly using heat pipes. High thermal conductivity silicone oil is present between the metal rod 200 and the heat release ring 164. The high thermal conductivity silicone oil reduces wear between the metal rod 200 and the heat release ring 164 and also provides thermal conductivity.

[0035] The working process and principle of heat transfer component 160 are as follows: The heat-absorbing ring 161 absorbs the radiant heat from the heated metal rod 200 and rapidly transfers the heat to the heat-uniforming ring 163 via the first heat pipe 162. Then, the heat is rapidly transferred to the heat-dissipating ring 164 via the second heat pipe 165. Before the metal rod 200 enters the magnetic cylinder 1111 of the third permanent magnet heating unit 113, the heat-dissipating ring 164 preheats the metal rod 200. Overall, by collecting and utilizing the radiant heat from the heated metal rod 200 using the heat transfer assembly 160, and using the collected heat to preheat the metal rod 200, the utilization rate of thermal energy, heating efficiency, and production cycle time are improved.

[0036] Preferably, the heat-absorbing ring 161 is in contact with the first heat-insulating chamber, and can also collect and utilize the heat from the first heat-insulating chamber.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A permanent magnet heating device, characterized in that, include: A permanent magnet heating mechanism is used to heat a metal rod passing through the permanent magnet heating mechanism; The feeding mechanism is used to feed the metal rod to the permanent magnet heating mechanism; A feeding mechanism for transferring the metal rod from the permanent magnet heating mechanism.

2. The permanent magnet heating device according to claim 1, characterized in that, The permanent magnet heating mechanism includes: Multiple permanent magnet heating units are arranged sequentially and are used to heat the metal rod.

3. The permanent magnet heating device according to claim 2, characterized in that, Each of the permanent magnet heating units includes: The magnetic cylinder has a channel through which the metal rod passes and is capable of rotating about its own axis; Multiple permanent magnet rings are installed on the inner wall of the magnetic cylinder along the axial direction of the magnetic cylinder, and each ring can rotate with the magnetic cylinder.

4. The permanent magnet heating device according to claim 3, characterized in that, Each of the permanent magnet rings includes: The first permanent magnet block consists of multiple blocks. There are multiple second permanent magnet blocks, which are arranged alternately with multiple first permanent magnet blocks around the circumference of the permanent magnet ring; a third permanent magnet block is sandwiched between each second permanent magnet block and each first permanent magnet ring; The N pole of each first permanent magnet block faces the radial outer side of the permanent magnet ring; the N pole of each second permanent magnet block faces the radial inner side of the permanent magnet ring; and the N pole of each third permanent magnet block faces the adjacent second permanent magnet block.

5. The permanent magnet heating device according to claim 3, characterized in that, The permanent magnet heating unit comprises three units: a first permanent magnet heating unit, a second permanent magnet heating unit, and a third permanent magnet heating unit. The rotation direction of the magnetic cylinder of the third permanent magnet heating unit is opposite to that of the magnetic cylinder of the second permanent magnet heating unit. The rotation direction of the magnetic cylinder of the first permanent magnet heating unit is the same as that of the magnetic cylinder of the third permanent magnet heating unit. The rotational speeds of the magnetic cylinders of the third permanent magnet heating unit and the second permanent magnet heating unit are the same. The ratio of the rotational speed of the magnetic cylinder of the first permanent magnet heating unit to that of the magnetic cylinder of the third permanent magnet heating unit is 2:5 to 3:

5.

6. The permanent magnet heating device according to claim 3, characterized in that, Each of the permanent magnet heating units further includes: The first guide member is used to guide the movement of the metal rod; A driver, connected to the magnetic cylinder, is used to drive the magnetic cylinder to rotate.

7. The permanent magnet heating device according to any one of claims 1 to 6, characterized in that, The feeding mechanism and the unloading mechanism are provided with a second guide member; the second guide member is used to guide the movement of the metal rod.

8. The permanent magnet heating device according to any one of claims 1 to 6, characterized in that, Also includes: The first insulated chamber is located on the feeding mechanism; And / or, a second heat preservation chamber is disposed on the permanent magnet heating mechanism; And / or, a temporary storage rack for loading is disposed on one side of the loading mechanism; And / or, a waste storage rack is provided on one side of the unloading mechanism.

9. The permanent magnet heating device according to any one of claims 1 to 6, characterized in that, Also includes: A heat transfer component is disposed on the permanent magnet heating mechanism and the feeding mechanism for transferring heat.

10. The permanent magnet heating device according to claim 9, characterized in that, The heat transfer component includes: A heat-absorbing ring is arranged around the outer periphery of the heated metal rod to absorb radiant heat. A uniform heating ring is arranged around the outer periphery of the metal rod to be heated; There are multiple first heat pipes, which are evenly distributed around the circumference of the heat absorption ring; the evaporation end of each first heat pipe is connected to the heat absorption ring, and the condensation end is connected to the heat equalization ring. A heat release ring is fitted around the outer periphery of the metal rod to be heated and located inside the heat equalization ring, for preheating the metal rod. There are multiple second heat pipes, with the evaporation end connected to the heat equalization ring and the condensation end connected to the heat release ring.

Images