An apparatus for annealing iron-silicon-aluminum powder

Abstract

The application discloses an iron-silicon-aluminum powder annealing device, and relates to the technical field of iron-silicon-aluminum powder production, which comprises a cylinder for storing iron-silicon-aluminum powder, and a cover plate is arranged on the cylinder for sealing; the device further comprises a feeding module, an air inlet module, a heating module and a conveying module; the feeding module is used for adding the powder to be annealed into the cylinder and sealing the cylinder through the cover plate; the air inlet module is used for inputting nitrogen or argon into the cylinder after vacuumizing; the heating module is used for heating the cylinder to a temperature required for annealing; the cooling module is used for water cooling the heated cylinder; and the conveying module is used for conveying the cylinder. In the whole annealing process, the cylinder is completely sealed, the protective gas nitrogen or argon cannot leak, the use amount can be reduced and the cost can be lowered, the atmosphere of the iron-silicon-aluminum powder is stable during the annealing process, and thus the performance of the iron-silicon-aluminum powder is improved.

Description

Technical Field

[0001] This invention relates to the field of iron-silicon-aluminum powder production technology, and specifically to an annealing device for iron-silicon-aluminum powder. Background Technology

[0002] Iron-silicon-aluminum powder is a common metallic powder composed of three elements: iron, silicon, and aluminum. This powder has low thermal conductivity and coefficient of thermal expansion, but good magnetic properties and processing performance. It is primarily used to manufacture soft magnetic materials, such as magnetic components in induction cookers and microwave ovens. Additionally, it can be used to manufacture metal injection molded (MIM) parts and electronic packaging materials.

[0003] In the production of silicon-aluminum metal soft magnetic powder, annealing is a crucial step, and its success is inextricably linked to the annealing equipment. Traditionally, annealing equipment for silicon-aluminum powder has consisted of either a strip furnace or a rotary furnace. In a strip furnace, a ring-shaped steel strip rotates on two shafts, and the powder moves slowly forward on the strip. Heating silicon carbide rods are positioned above the strip. The powder is heated to the required annealing temperature by the heating silicon carbide rods and then cooled in the furnace.

[0004] To prevent high-temperature oxidation during the annealing process, iron-silicon-aluminum powder requires protection with an inert gas (nitrogen or argon). The steel strip has inlet and outlet ports at both ends. To ensure continuous inert gas protection during annealing, air curtains are installed at the inlet and outlet to prevent nitrogen or argon leakage. Even with air curtain protection, 15%-20% of nitrogen or argon still escapes, resulting in gas waste and increased production costs. Furthermore, the unstable furnace atmosphere negatively impacts the performance of the iron-silicon-aluminum powder.

[0005] The annealing process of rotary kilns is similar to that of steel strip furnaces. The discharge port is also sealed by an air curtain, which also causes leakage, resulting in gas waste and increased production costs; it also affects and reduces the performance of iron-silicon-aluminum powder. Summary of the Invention

[0006] The purpose of this invention is to provide an annealing apparatus for iron-silicon-aluminum powder, solving the following technical problems:

[0007] During the annealing process of iron-silicon-aluminum powder in steel strip furnaces or rotary furnaces, there is a phenomenon of nitrogen or argon leakage, which causes gas waste, increases production costs, and affects and reduces the performance of iron-silicon-aluminum powder.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] An annealing apparatus for iron-silicon-aluminum powder includes a cylinder for storing iron-silicon-aluminum powder, and the cylinder is provided with a cover plate for sealing.

[0010] Also includes:

[0011] The feeding module is used to add the powder to be annealed into the cylinder and seal it with a cover plate.

[0012] The air intake module is used to input nitrogen or argon gas into the vacuum-sealed cylinder, and

[0013] A heating module, used to heat the cylinder to the temperature required for annealing, and

[0014] A cooling module is used to perform water cooling on the heated cylinder.

[0015] The conveying module is used to sequentially convey the cylinder from the feeding module to the air inlet module, the heating module and the cooling module.

[0016] Preferably, the air intake module includes a vacuum section, which is used to evacuate the sealed cylinder.

[0017] The vacuum section includes a first air pipe installed on the cover plate, one end of which is used to connect to a vacuum pump, and the other end extends into the cylinder.

[0018] Preferably, the air intake module further includes a second air pipe rotatably arranged on the cover plate. One end of the second air pipe is used to connect to an air pump, which is connected to a gas cylinder storing nitrogen or argon. The other end of the second air pipe is connected to a rotating shaft provided at the bottom of the cover plate.

[0019] The rotating shaft has several sets of shaft bodies arranged in a circumferential array. The shaft bodies and the rotating shaft are hollow structures, and several sets of spray holes are opened on the shaft bodies.

[0020] Preferably, the conveying module includes a symmetrically arranged conveying frame that extends from the feeding module toward the cooling module. A screw is rotatably arranged in one side of the conveying frame. The screw is fixed to the output end of the motor that drives its rotation. A nut is helically sleeved on the screw, and the nut is detachably connected to the cylinder through a connector.

[0021] Preferably, a support plate is vertically and rotatably arranged in the cylinder, and the support plate is rotatably connected to the rotating shaft;

[0022] The cylinder has symmetrically arranged positioning seats on both sides, and two sets of telescopic cylinders connected to the cover plate are symmetrically arranged on the positioning seats. The telescopic cylinders are equipped with a first spring.

[0023] Preferably, the connector includes an adjusting seat, which is connected to a nut and a guide seat via a telescopic tube, and a guide shaft is fixedly mounted on the other end of the guide seat;

[0024] Among them, the positioning seats are rotatably arranged with support shafts, and the support shafts are provided with slots for insertion and cooperation with guide shafts. Several sets of strip-shaped slots are arranged in a circumferential array on the slot wall, and strip-shaped slot seats are provided on the end face of the support shafts to engage with the strip-shaped slots.

[0025] Preferably, the adjusting seat is fixed to the adjusting plate by a connecting rod, and a first rack is slidably arranged on the adjusting plate;

[0026] In this configuration, a limiting strip is provided at one end of the first rack that approaches the powder conveying mechanism. The limiting strip is in contact with the connecting rod, and a first gear that meshes with the first rack is fixedly arranged between the guide shafts.

[0027] Preferably, the end of the conveyor frame is provided with a tilting part for driving the cooled cylinder to deflect and discharge the material;

[0028] The flipping part includes a limiting plate fixedly arranged at the end of the conveyor frame. The limiting plate is fixed to the conveyor frame by a U-shaped plate, and a conveying groove is formed between the U-shaped plate and the limiting plate.

[0029] Preferably, the vacuum pump and the air pump are respectively installed on the lifting plate, and the lifting plate is fixed to the electric cylinder drive end.

[0030] Preferably, a second rack is also provided along the conveying path of the air intake module, heating module and cooling module, and a second gear for meshing with the second rack is provided between the second air pipes.

[0031] The beneficial effects of this invention are:

[0032] (1) When annealing iron-silicon-aluminum powder, the present invention first adds the powder into the cylinder through the feeding module and seals it with a cover plate. The sealed cylinder is then evacuated through the vacuum module. Nitrogen or argon is introduced into the evacuated cylinder through the gas inlet module. Next, the cylinder is heated to the required annealing temperature through the heating module. Finally, the heated cylinder is water-cooled through the cooling module. The present invention achieves complete sealing of the cylinder during the entire annealing process, preventing leakage of nitrogen or argon gas. This reduces the amount used and lowers the cost. It also stabilizes the atmosphere of the iron-silicon-aluminum powder during the annealing process, thereby improving the performance of the iron-silicon-aluminum powder.

[0033] (2) The bottom of the cylinder of the present invention is configured with a double-layer structure, including an inner layer of the cylindrical bottom plate and an outer layer of the cylindrical bottom plate. The inner layer of the cylindrical bottom plate and the outer layer of the cylindrical bottom plate are configured with an arc-shaped structure and are welded to the cylinder. On the one hand, this is used to reduce deformation, and on the other hand, the double-layer structure can prevent cracking during the water cooling process at high temperature. Attached Figure Description

[0034] The invention will now be further described with reference to the accompanying drawings.

[0035] Figure 1 This is a schematic diagram of the structure of an annealing device for iron-silicon-aluminum powder according to the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the cylinder in the annealing device for iron-silicon-aluminum powder of the present invention;

[0037] Figure 3 This is a schematic diagram of the cover plate in an annealing device for iron-silicon-aluminum powder according to the present invention;

[0038] Figure 4 This is a schematic diagram of the lifting plate in an annealing device for iron-silicon-aluminum powder according to the present invention;

[0039] Figure 5 This is a schematic diagram of the conveying module in an annealing device for iron-silicon-aluminum powder according to the present invention;

[0040] Figure 6 This is the present invention. Figure 5 Schematic diagram of the enlarged section at point A in the middle;

[0041] Figure 7 This is the present invention. Figure 5 A schematic diagram of the enlarged section at point B in the middle;

[0042] Figure 8 This is a schematic diagram of the telescopic tube in an annealing device for iron-silicon-aluminum powder according to the present invention.

[0043] In the diagram: 1. Cylinder; 2. Heating furnace; 3. Cooling box; 4. Conveying frame; 5. Storage trough; 6. Electric cylinder; 7. Second gear; 8. Second rack; 9. Screw; 101. Cover plate; 102. Bearing plate; 103. Rotating shaft; 104. Shaft; 105. Powder conveying mechanism; 106. First air pipe; 107. Second air pipe; 108. First butterfly valve; 109. Outer layer of cylindrical bottom plate; 110. Second butterfly valve; 111. Inner layer of cylindrical bottom plate; 301. Water tank; 401. Positioning seat; 402. First rack 403. Wheel; 404. Adjusting seat; 405. Conveying trough; 406. Limiting plate; 407. U-shaped plate; 608. Lifting plate; 609. Air pump; 6000. Vacuum pump; 7001. Spray hole; 701. Adjusting plate; 702. First spring; 703. Support rod; 704. Second spring; 705. First rack; 706. Telescopic cylinder; 907. Nut; 908. Limiting strip; 909. Connecting rod; 900. Telescopic tube; 901. Guide shaft; 902. Strip-shaped bracket; 903. Support shaft; 904. Strip-shaped slot. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1

[0046] Please see Figures 1-2 As shown, the present invention is an annealing device for iron-silicon-aluminum powder, including a cylinder 1 for storing iron-silicon-aluminum powder, and a cover plate 101 for sealing on the cylinder 1; in one embodiment of this invention, the cylinder 1 is configured as a cylindrical material tank structure. In the iron-silicon-aluminum powder annealing process, the powder is added to the cylinder 1 and then sealed by the cover plate 101 to achieve isolation from the outside world.

[0047] Specifically, in this embodiment, the cylinder 1 and the cover plate 101 are made of heat-resistant stainless steel, which can prevent the material of the cylinder 1 from oxidizing at high temperature and mixing into the iron-silicon-aluminum powder to cause adverse reactions. The diameter of the cylinder 1 is 100mm-120mm and the height is 500mm-3000mm.

[0048] In addition, the bottom of the cylinder 1 is set with a double-layer structure, including an inner cylindrical bottom plate 111 and an outer cylindrical bottom plate 109. The inner cylindrical bottom plate 111 and the outer cylindrical bottom plate 109 are set with an arc-shaped structure and are welded to the cylinder 1. On the one hand, this is used to reduce deformation, and on the other hand, the double-layer structure can prevent cracking during water cooling at high temperatures.

[0049] Also includes:

[0050] The feeding module is used to add the powder to be annealed into the cylinder 1 and seal it with the cover plate 101;

[0051] The air intake module is used to input nitrogen or argon into the vacuum-evacuated cylinder 1;

[0052] The heating module is used to heat the cylinder 1 to the temperature required for annealing;

[0053] The cooling module is used to cool the heated cylinder 1 with water.

[0054] The conveying module is used to sequentially convey the cylinder 1 from the feeding module to the air inlet module, the heating module and the cooling module.

[0055] It should be noted that when annealing the iron-silicon-aluminum powder, the powder is first added to the cylinder 1 through the feeding module and sealed by the cover plate 101. The sealed cylinder 1 is then evacuated by the vacuum module. Nitrogen or argon is then introduced into the evacuated cylinder 1 through the gas inlet module. Next, the cylinder 1 is heated to the required annealing temperature by the heating module. Finally, the heated cylinder 1 is water-cooled by the cooling module. In this embodiment, the cylinder 1 is completely sealed throughout the annealing process, preventing leakage of nitrogen or argon gas. This reduces the amount of gas used and lowers costs. It also stabilizes the atmosphere of the iron-silicon-aluminum powder during annealing, thereby improving the performance of the iron-silicon-aluminum powder by 15%-20%.

[0056] Example 2

[0057] Based on Example 1, please refer to Figures 3-4 The feeding module includes a powder conveying mechanism 105, which is composed of a conveyor belt and a rotating roller. The conveyor belt is sleeved on the rotating roller. When the rotating roller is driven to rotate by the driving equipment, the conveyor belt can be driven to convey the cylinder 1 to the end of the powder conveying mechanism 105. Then, the iron-silicon-aluminum powder is placed on the powder conveying mechanism 105 and conveyed towards the cylinder 1. When the powder in the cylinder 1 reaches the preset amount, the conveying stops and is sealed by the cover plate 101. In addition, a baffle can be set on the conveyor belt to facilitate the powder falling off during conveying.

[0058] The air intake module includes a vacuum section, which is used to evacuate the sealed cylinder 1.

[0059] The vacuum section includes a first gas pipe 106 disposed on the cover plate 101. One end of the first gas pipe 106 is used to connect to the vacuum pump 603, and the other end extends into the cylinder 1. A first butterfly valve 108 is provided between the first gas pipes 106. Specifically, in order to avoid the original air in the cylinder 1 from affecting the performance of the powder, in this embodiment, before nitrogen or argon is introduced into the cylinder 1, the first gas pipe 106 is connected to the vacuum pump 603, the first butterfly valve 108 is opened, and the cylinder 1 is evacuated by the vacuum pump 603.

[0060] The air intake module also includes a second air pipe 107 rotatably mounted on the cover plate 101. One end of the second air pipe 107 is connected to an air pump 602, which is connected to a gas cylinder storing nitrogen or argon. The other end of the second air pipe 107 is connected to a rotating shaft 103 located at the bottom of the cover plate 101. The rotating shaft 103 has several sets of shaft bodies 104 arranged in a circumferential array. The shaft bodies 104 and the rotating shaft 103 are hollow structures, and several sets of nozzles 701 are formed on the shaft bodies 104. Specifically, the nozzles 701 are arranged in a specific manner. A filter screen is installed to restrict powder from entering the shaft 104. A second butterfly valve 110 is installed between the second gas pipes 107. After the cylinder 1 is evacuated, the second gas pipe 107 is connected to the gas pump 602. The second butterfly valve 110 is opened, and nitrogen or argon gas from the gas cylinder is input into the rotating shaft 103 and the shaft 104 through the gas pump 602. Finally, it is sprayed out through the nozzle 701. Since the shaft 104 is uniformly distributed in the cylinder 1, the contact area between nitrogen or argon gas and powder in the cylinder 1 is larger, which improves the annealing effect.

[0061] Please see Figures 5-6 The heating module includes a heating furnace 2. The heating furnace 2 has feed ports sequentially opened towards the air inlet module to transport the cylinder 1 into the heating furnace 2 for heating to the required annealing temperature. Several sets of heating silicon carbide rods are evenly distributed in the heating furnace 2 for heating. The heating furnace 2 in this embodiment is prior art and will not be described in detail. A sealing plate can be set at the feed port to seal the cylinder 1 after it enters the heating furnace 2, so as to achieve the effect of heat preservation.

[0062] The cooling module includes a cooling box 3 located on one side of the heating furnace 2. The cooling box 3 is connected to the heating furnace 2, and a sealing plate is installed between them. After the annealed cylinder 1 enters the cooling box 3, the sealing plate can seal the connection between the two, achieving an isolation effect. Several sets of nozzles are evenly distributed in the cooling box 3. The nozzles are connected to a water tank 301 located on the cooling box 3 via water pipes. In addition, a water collection tank is set at the bottom of the cooling box 3 and connected to the cooling box 3 via a water pump. Specifically, the water in the water tank 301 is transported through the water pipes under the action of gravity and sprayed onto the surface of the cylinder 1 through the nozzles for water cooling. The water at the bottom is collected through the water collection tank and then pumped back to the cooling box 3 for recycling.

[0063] In addition, an opening is synchronously provided at the end of the cooling box 3 for the discharge of the cooled cylinder 1;

[0064] The conveying module includes symmetrically arranged conveyor frames 4, which extend from the feeding module towards the cooling module. A screw 9 is rotatably arranged in one side of the conveyor frame 4, and the screw 9 is fixed to the output end of the motor that drives its rotation. A nut 901 is helically sleeved on the screw 9, and the nut 901 is detachably connected to one side of the cylinder 1 through a connector. Specifically, a guide rod is fixedly arranged between the conveyor frames 4 on the other side, and a guide seat is slidably sleeved on the guide rod. The guide seat is detachably connected to the other side of the cylinder 1 through a connector. It should be noted that during the conveying of the cylinder 1, the motor is started to drive the screw 9 to rotate. When the nut 901 moves on the screw 9, it can synchronously drive the cylinder 1 to move, thereby realizing the automated conveying of the cylinder 1 between various processes.

[0065] Please see Figures 7-8 A support plate 102 is vertically mounted inside the cylinder 1, and the support plate 102 is rotatably connected to the rotating shaft 103. Positioning seats 401 are symmetrically arranged on both sides of the cylinder 1. Two sets of telescopic cylinders 707 connected to the cover plate 101 are symmetrically arranged on the positioning seats 401. Each telescopic cylinder 707 is equipped with a first spring 703. It can be explained that in the initial state, based on the action of the first spring 703, the cover plate 101 is positioned a certain distance above the cylinder 1. At this time, the support plate 102 is located inside the cylinder 1 near the opening. During material feeding, the conveying module first conveys the cylinder 1, so that the end of the powder conveying mechanism 105 is positioned above the opening of the cylinder 1. Then, the powder conveying mechanism 105... The powder is conveyed to the support plate 102. Under the pressure of the powder's gravity, the support plate 102 gradually moves toward the bottom of the cylinder 1. Then, the cover plate 101 moves synchronously through the rotating shaft 103. At this time, the telescopic cylinder 707 is compressed and drives the first spring 703 to compress and generate elastic force. When the cover plate 101 moves to contact the baffle on the powder conveying mechanism 105, as a certain amount of powder continues to be conveyed, the conveying module drives the cylinder 1 to move away from the powder conveying mechanism 105, so that the powder conveying mechanism 105 is separated from the cover plate 101. At this time, under the action of the powder's gravity, the cover plate 101 can continue to be pressed down until it merges with the open end cap of the cylinder 1 to achieve automatic sealing.

[0066] To facilitate the assembly and disassembly of the cylinder 1, the connecting component includes an adjusting seat 403. The adjusting seat 403 is connected to the nut 901 and the guide seat via a telescopic tube 904. A guide shaft 905 is fixedly arranged at the other end of the guide seat. A support shaft 907 is rotatably arranged between the positioning seats 401. The support shaft 907 has a slot for engaging with the guide shaft 905. Specifically, several sets of strip-shaped slots 908 are arranged in a circumferential array on the slot wall. A corresponding strip-shaped seat 906 is provided on the end face of the support shaft 907 to engage with the strip-shaped slots 908. When assembling or disassembling the cylinder 1, the guide shaft 905 can be engaged or disassembled with the support shaft 907 by sliding the adjusting seat 403. The assembly and disassembly are very convenient, and different cylinders 1 can be quickly replaced for annealing.

[0067] In this embodiment, the cylinder 1 is rotatably arranged between the two sets of conveying frames 4 via a connecting member. Since there is a weight deviation when the powder conveying mechanism 105 conveys materials into the cylinder 1, in order to avoid the cylinder 1 from deflecting, in this embodiment, the adjusting seat 403 is fixed to the adjusting plate 702 via the connecting rod 903. The first rack 706 is slidably arranged on the adjusting plate 702. The first rack 706 is provided with a limiting strip 902 at one end near the powder conveying mechanism 105. The limiting strip 902 is in contact with the connecting rod 903. The first gear 402 that meshes with the first rack 706 is fixedly arranged between the guide shafts 905.

[0068] It should be noted that when there is a weight deviation during feeding, the cylinder 1 will be driven to deflect toward the powder conveying mechanism 105. At this time, the cylinder 1 will drive the first gear 402 to deflect synchronously through the support shaft 907 and the guide shaft 905. However, since the limit strip 902 abuts against the connecting rod 903, the first gear 402 cannot slide away from the powder conveying mechanism 105, thereby achieving the function of locking the first gear 402, and the cylinder 1 cannot deflect.

[0069] In another embodiment, a tilting part is provided at the end of the conveyor frame 4 to drive the cooled cylinder 1 to deflect and discharge the material.

[0070] The flipping part includes a limiting plate 405 fixedly arranged at the end of the conveyor frame 4. The limiting plate 405 is fixed to the conveyor frame 4 by a U-shaped plate 406, and a conveying groove 404 is formed between the U-shaped plate 406 and the limiting plate 405. It can be explained that when the conveying module outputs the cooled cylinder 1 from the cooling box 3, the first rack 706 stops moving under the action of the limiting plate 405. At this time, the adjusting seat 403 can still drive the adjusting plate 702 to move in the conveying groove 404. Based on the movement of the first rack 706, the first gear 402 can be deflected. When it is deflected to a certain angle, the material in the cylinder 1 can be automatically discharged.

[0071] Specifically, a support rod 704 is fixedly arranged on one side of the connecting rod 903, and a first rack 706 is fixed to a connecting plate that is slidably arranged on the support rod 704. A second spring 705 is also sleeved on the support rod 704. One end of the second spring 705 is fixed to the connecting rod 903, and the other end is fixed to the connecting plate, so as to drive the first rack 706 to reset.

[0072] In addition, a storage trough 5 is provided at the bottom of the end of the conveyor frame 4 to receive the discharged powder.

[0073] Vacuum pump 603 and air pump 602 are respectively installed on lifting plate 601, and lifting plate 601 is fixed to the drive end of electric cylinder 6 installed on heating furnace 2; specifically, the cylinder 1 is moved to lifting plate 601 through conveying module, and electric cylinder 6 can drive lifting plate 601 to move toward cylinder 1 so as to connect the output pipes of vacuum pump 603 and air pump 602 to the corresponding first air pipe 106 and second air pipe 107.

[0074] In addition, a second rack 8 is arranged along the conveying path of the air intake module, heating module and cooling module, and a second gear 7 is provided between the second air pipes 107 for meshing with the second rack 8. It can be explained that during the conveying process to the air intake module, heating module and cooling module, the second rack 8 and the second gear 7 mesh to drive the rotating shaft 103 to rotate, and then the shaft 104 synchronously stirs the powder. On the one hand, it can improve the uniformity and efficiency of annealing, and on the other hand, the cylinder 1 will not deflect under the limiting action of the second rack 8 and the second gear 7.

[0075] Specifically, when the cylinder 1 is located in the heating furnace 2, the conveying module can drive the cylinder 1 to reciprocate multiple times in the heating furnace 2, so as to stir the powder multiple times and further improve the annealing efficiency.

[0076] Example 3

[0077] Based on Example 2, an annealing process for an annealing apparatus for iron-silicon-aluminum powder includes the following steps:

[0078] The conveying module first conveys the cylinder 1, so that the end of the powder conveying mechanism 105 is positioned above the opening of the cylinder 1;

[0079] The powder conveying mechanism 105 conveys the powder to the bearing plate 102. Under the pressure of the powder's gravity, the bearing plate 102 gradually moves toward the bottom of the cylinder 1. The rotating shaft 103 drives the cover plate 101 to move synchronously until it merges with the open end cover of the cylinder 1 to achieve automatic sealing. At this time, the powder conveying stops.

[0080] The conveying module moves the cylinder 1 to the lifting plate 601. The electric cylinder 6 drives the lifting plate 601 to move toward the cylinder 1, and connects the output pipes of the vacuum pump 603 and the air pump 602 to the corresponding first air pipe 106 and second air pipe 107.

[0081] Open the first butterfly valve 108 and use the vacuum pump 603 to evacuate the cylinder 1;

[0082] After the vacuuming is completed, the first butterfly valve 108 is closed and the second butterfly valve 110 is opened. The gas pump 602 inputs nitrogen or argon from the gas cylinder into the rotating shaft 103 and the shaft body 104, and finally sprays it out through the nozzle 701. After completion, the second butterfly valve 110 is closed.

[0083] The cylinder 1 is conveyed to the heating furnace 2 and heated to the temperature required for annealing and held for a period of time;

[0084] After heating is completed, the cylinder 1 is transported to the cooling box 3. Water in the water tank 301 is transported through the water pipe under the action of gravity and sprayed onto the surface of the cylinder 1 through the nozzle for water cooling.

[0085] After cooling, cylinder 1 is output from cooling box 3. The tilting part drives the cooled cylinder 1 to deflect and discharge the material. After the material discharge is completed, cylinder 1 can be removed.

[0086] In the description of this invention, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on the invention. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "multiple" means two or more.

[0087] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0088] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. An iron-silicon-aluminum powder annealing device, comprising a cylinder (1) for storing iron-silicon-aluminum powder, the cylinder (1) being provided with a cover plate (101) for sealing; characterized in that Further comprising: a feeding module for adding the powder to be annealed into the cylinder (1) and sealing through the cover plate (101), and an air inlet module for inputting nitrogen or argon into the cylinder (1) after vacuumizing, and a heating module for heating the cylinder (1) to the required temperature for annealing, and a cooling module for water cooling the heated cylinder (1), and a conveying module for conveying the cylinder (1) from the feeding module to the air inlet module, the heating module and the cooling module in sequence; the conveying module comprises conveying frames (4) arranged symmetrically, the conveying frames (4) extending from the feeding module to the cooling module, a screw rod (9) being rotatably arranged in one side of the conveying frame (4), the screw rod (9) being fixed with a motor device output end for driving the rotation of the screw rod (9), a nut (901) being spirally sleeved on the screw rod (9), the nut (901) being detachably connected with one side of the cylinder (1) through a connecting piece; guide rods being fixedly arranged between the other side of the conveying frame (4), guide seats being slidably sleeved on the guide rods, the guide seats being detachably connected with the other side of the cylinder (1) through connecting pieces; a bearing plate (102) being liftably arranged in the cylinder (1), the bearing plate (102) being rotatably connected with a rotating shaft (103); positioning seats (401) being symmetrically arranged on both sides of the cylinder (1), two groups of telescopic cylinders (707) connected with the cover plate (101) being symmetrically arranged on the positioning seats (401), first springs (703) being arranged on the telescopic cylinders (707); the connecting piece comprising an adjusting seat (403), the adjusting seat (403) being connected with the nut (901) and the guide seat through an extension pipe (904), a guide shaft (905) being fixedly arranged at the other end of the guide seat; a support shaft (907) being rotatably arranged between the positioning seats (401), the support shaft (907) being provided with a slot for plug-in cooperation with the guide shaft (905), a plurality of groups of strip-shaped clamping grooves (908) being circumferentially arranged on the slot wall, strip-shaped clamping seats (906) corresponding to the strip-shaped clamping grooves (908) being arranged on the end face of the support shaft (907).

2. The apparatus for annealing of ferrosilal powder according to claim 1, wherein The air inlet module comprises a vacuum part for vacuumizing the sealed cylinder (1); the vacuum part comprises a first air pipe (106) arranged on the cover plate (101), one end of the first air pipe (106) being used for connecting a vacuum pump (603), the other end of the first air pipe (106) extending into the cylinder (1).

3. The apparatus for annealing of ferrosilal powder according to claim 2, wherein The air inlet module further comprises a second air pipe (107) rotatably arranged on the cover plate (101), one end of the second air pipe (107) being used for connecting a gas pump (602), the gas pump (602) being connected with a gas cylinder storing nitrogen or argon, the other end of the second air pipe (107) being connected with the rotating shaft (103) arranged at the bottom of the cover plate (101). The rotating shaft (103) is arranged with a plurality of groups of shaft bodies (104) in a circumferential array, the shaft body (104) and the rotating shaft (103) are arranged in a hollow structure, and a plurality of groups of spray holes (701) are formed in the shaft body (104).

4. The apparatus for annealing of ferrosilal powder according to claim 1, wherein The adjusting seat (403) is fixed with the adjusting plate (702) through the connecting rod (903), and the first rack (706) is slidably arranged on the adjusting plate (702); The first rack (706) is provided with a limiting strip (902) at one end close to the powder conveying mechanism (105), the limiting strip (902) is attached to the connecting rod (903), and the first gear (402) engaged with the first rack (706) is fixedly arranged between the guide shafts (905).

5. The apparatus according to claim 4, wherein The end of the conveying frame (4) is provided with a turnover part for driving the cooled barrel (1) to deflect and discharge materials; The turnover part comprises a limiting plate (405) fixedly arranged at the end of the conveying frame (4), the limiting plate (405) is fixed with the conveying frame (4) through a U-shaped plate (406), and a conveying groove (404) is formed between the U-shaped plate (406) and the limiting plate (405).

6. The apparatus for annealing of ferrosilal powder according to claim 3, wherein The vacuum pump (603) and the air pump (602) are respectively arranged on the lifting plate (601), and the lifting plate (601) is fixed with the driving end of the electric cylinder (6).

7. The apparatus for annealing of ferrosilal powder according to claim 1, wherein A second rack (8) is arranged on the conveying path along the air inlet module, the heating module and the cooling module, and the second air pipe (107) is provided with a second gear (7) engaged with the second rack (8).

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