Magnetic metal powder separating device for plasma powder production

Abstract

The application belongs to the technical field of material magnetic separation, and discloses a magnetic attraction type metal powder separation device for plasma powder production, which comprises an anti-sintering assembly, a gas-solid separation roller assembly, a magnetic separation screen assembly, a plasma torch assembly and a two-stage plasma gas homogenizing assembly. The two-stage plasma gas homogenizing assembly is used for stirring and homogenizing various mixed gases and sending the mixed gases into the plasma torch assembly in a ring motion mode. The plasma torch assembly is used for melting wire and forming metal powder. The anti-sintering assembly is arranged at the bottom of the plasma torch assembly, and the gas-solid separation roller assembly is arranged in the anti-sintering assembly. A powder collecting groove is arranged on the separation roller of the gas-solid separation roller assembly. A separation magnetic screen is arranged in the powder collecting groove. The separation magnetic screen forms reciprocating vibration through a resistance sliding rod, a roller, a wave-shaped track ring and a resistance spring, so as to magnetically separate the metal powder and make the powder fall into a powder collecting pipe. The application can improve the uniformity of mixed gas inflow, the continuity of powder magnetic separation and the stability of collection.

Description

Technical Field

[0001] This application belongs to the field of magnetic separation technology of materials, specifically relating to a magnetic metal powder separation device for plasma powder making. Background Technology

[0002] During the preparation and collection of metal powder, it usually enters the subsequent collection area along with the gas flow. Powder particles are prone to dispersion, drift, or discharge under the influence of airflow. In order to improve the recovery effect of metal powder, existing equipment usually sets up sieving, filtering, or magnetic attraction structures to separate and collect the powder. However, traditional fixed magnetic separation structures are mostly static. After the powder enters the separation area, it relies solely on changes in airflow velocity or a single magnetic attraction surface for interception. This can easily cause the powder to accumulate in local locations, gradually covering the magnetic attraction area. This leads to a decrease in the contact effect between the powder and the magnetic attraction surface, affecting the continuous separation efficiency.

[0003] Meanwhile, metal powder often still has a certain temperature when it first enters the separation and collection area. If the powder stays in the separation area for a long time, or if the powder accumulates on the screen surface, tank, or pipe inlet, powder adhesion, clumping, or sintering may occur. These situations will not only reduce the flowability of the powder, but may also cause blockage of the separation screen surface and accumulation of material in the powder collection channel, thereby affecting the continuous operation stability of the equipment. Existing separation structures usually only focus on powder interception, but do not adequately consider the prevention of powder adhesion, blockage, and timely discharge at high temperatures, making it difficult to meet the requirements of continuous powder separation and collection.

[0004] Furthermore, during the metal powder formation process, the uniformity of the mixed gas introduction affects the stability of the airflow field. If the distribution of multiple gases is uneven when they enter the reaction or processing chamber, it can easily lead to excessively strong or weak local airflow impacts, making the movement direction, particle distribution, and state of the powder entering the separation area unstable after formation. This increases the difficulty of subsequent magnetic separation and collection. In the existing structure, the mixed gas usually enters the chamber directly through a single air inlet or a fixed exhaust port. The gas lacks sufficient stirring and homogenization process before entering, making it difficult to ensure that multiple gases are evenly distributed before entering the subsequent processing area.

[0005] Therefore, there is an urgent need to design a device that can effectively separate gas and powder after metal powder enters the collection area. Summary of the Invention

[0006] To address the problems mentioned in the background technology, a synergistic process is formed by performing guided separation on the metal powder gas-solid mixture, dynamic magnetic interception on the metal powder, vibration shedding and cooling collection on the separated powder, and stirring homogenization and circulating introduction on various mixed gases. This process integrates metal powder generation, gas-solid separation, magnetic sieving, anti-sintering collection, and mixed gas homogenization. As a result, the continuity of magnetic separation of metal powder is improved, while the impact of high-temperature powder adhesion, sieve blockage, and uneven gas distribution on the stability of powder formation and collection is reduced.

[0007] To achieve the above objectives, this application provides the following technical solution: a magnetic metal powder separation device for plasma powder preparation, comprising an anti-sintering component to prevent high-temperature sintering of metal powder, wherein the anti-sintering component is internally provided with a gas-solid separation roller assembly for gas guidance and powder collection, and the gas-solid separation roller assembly is internally provided with a magnetic separation sieve assembly for dynamic separation of powder; so that after the metal powder enters the anti-sintering component with the gas, the gas-solid separation roller assembly guides the gas flow direction, and the magnetic separation sieve assembly magnetically intercepts the metal powder, thereby separating the gas discharge path and the powder collection path, and improving the stability of magnetic separation and continuous collection of metal powder;

[0008] The anti-sintering component includes an anti-sintering seat, a powder trough for receiving powdered gas-solid material is provided at the top of the anti-sintering seat, a powder collecting pipe is provided at the bottom of the anti-sintering seat, a seat groove communicating with the powder trough and the powder collecting pipe is provided inside the anti-sintering seat, and a corrugated track ring is provided on one side of the anti-sintering seat; so as to form a top-down powder entry, separation and discharge channel through the powder trough, seat groove and powder collecting pipe, and the corrugated track ring provides a counteracting guide for the reciprocating vibration of the magnetic separation screen component, so that the powder can enter the powder collecting pipe in time after separation;

[0009] The gas-solid separation roller assembly includes a separation roller rotatably disposed in the seat groove and an air guide pipe disposed inside the separation roller. The separation roller has multiple powder collection grooves on its edge for receiving powder gas-solid materials. The powder collection grooves have sieve sliding grooves. The air guide pipe has an air inlet at its top and an exhaust pipe at one end. The rotation of the separation roller causes the multiple powder collection grooves to receive powder gas-solid materials in sequence, and a gas outflow path is formed through the air inlet, air guide pipe and exhaust pipe. This allows the powder to be intercepted and separated in the powder collection grooves, while the gas is guided out, thereby reducing the amount of powder discharged with the gas.

[0010] The magnetic separation screen assembly includes a separation magnetic screen slidably disposed within the screen sliding groove. One end of the separation magnetic screen is connected to an abutting sliding rod, and the end of the abutting sliding rod is provided with a roller that abuts against a corrugated track ring. The other end of the separation magnetic screen is provided with an abutting spring. The separation magnetic screen magnetically intercepts metal powder entering the powder collection tank. Through the abutting action of the roller and the corrugated track ring, as well as the resetting action of the abutting spring, the separation magnetic screen generates reciprocating vibration during the rotation of the separation roller, which promotes the timely removal of powder adsorbed or retained on the separation magnetic screen.

[0011] Preferably, the anti-sintering component further includes water pipes, water pipes are provided on both sides of the anti-sintering seat, and a U-shaped end frame and a side rod are fixedly provided at both ends of the anti-sintering seat, and a first drive motor is provided on the U-shaped end frame;

[0012] The wave-shaped rail ring is fixed on the side rod. The anti-sintering seat has a hollow structure inside. The interior of the anti-sintering seat is connected to the external cooling circulating water through a water pipe. Cooling circulating water is introduced into the interior of the anti-sintering seat through the water pipe to create a cooling environment inside the anti-sintering seat, reducing the risk of high-temperature adhesion or sintering of metal powder during magnetic separation and collection. The first drive motor provides driving force for the rotation of the separation roller.

[0013] Preferably, the gas-solid separation roller assembly further includes a roller groove, which is located at the center of the separation roller. An end shaft tube is fixedly provided at one end of the separation roller, and end grooves are respectively provided at both ends of the screen sliding groove. A side guide sliding hole is provided at the end of the separation roller away from the end shaft tube. The roller groove provides installation space for the air guide pipe, the end shaft tube provides a rotating connection base for the separation roller, and the end groove and side guide sliding hole provide stable sliding guidance for the separation magnetic screen, end plate, and contact sliding rod, ensuring the stability of the magnetic separation screen assembly during the rotational separation process.

[0014] Preferably, the magnetic separation screen assembly further includes an end plate, which is fixedly disposed at the end of the separation magnetic screen away from the sliding rod.

[0015] The separating magnetic sieve slides in the powder collection tank via a sieve sliding groove, and the end plate slides in the end groove. The sieve sliding groove limits the reciprocating movement path of the separating magnetic sieve, and the end plate and end groove cooperate to guide and limit the end of the separating magnetic sieve, so as to prevent the separating magnetic sieve from swaying or detaching during the vibration powder removal process, thereby improving the reliability of powder magnetic separation and vibration detachment.

[0016] Preferably, the two ends of the contact spring are fixedly mounted on the end plate and the inner wall of the end groove, respectively. The contact sliding rod slides through the side guide sliding hole and passes through the separating roller. The contact spring pushes against the separating magnetic screen, and the roller at one end of the contact sliding rod abuts against the corrugated track ring. The contact spring continuously pushes the separating magnetic screen outward, so that the roller always maintains contact with the corrugated track ring. When the separating roller rotates, the concave and convex trajectory of the corrugated track ring is converted into the reciprocating vibration motion of the separating magnetic screen, thereby enhancing the effect of powder falling off the separating magnetic screen.

[0017] Preferably, the end shaft tube is connected to the output shaft of the first drive motor, the separating roller is rotatably disposed in the seat groove, the air guide pipe is rotatably disposed in the roller groove, and the exhaust pipe is fixedly connected to the corrugated rail ring; so that the separating roller is continuously rotated in the seat groove by the first drive motor, so that the powder collection tank can sequentially complete the actions of receiving material, magnetic separation and discharge, while the air guide pipe and exhaust pipe maintain the stability of the gas flow channel, ensuring that the gas-solid separation process can be carried out continuously.

[0018] Preferably, a plasma torch assembly is fixedly installed on the top of the anti-sintering assembly, and a two-stage plasma gas homogenization assembly is installed on the top of the plasma torch assembly; so that the metal powder formed by the plasma torch assembly can directly enter the anti-sintering assembly for gas-solid separation and magnetic absorption collection, and the two-stage plasma gas homogenization assembly pre-homogenizes the various mixed gases entering the plasma torch assembly, reducing the impact of uneven distribution of mixed gases on the powder formation state and subsequent magnetic separation stability.

[0019] Preferably, the plasma torch assembly includes a housing, a sealing disk rotatably disposed on the inner wall of the top of the housing, a first cathode rod rotatably disposed at the center of the sealing disk, an anode plate disposed on the inner wall of the top of the housing that is connected to the same power source as the first cathode rod and cooperates to generate a plasma beam, a second cathode rod and a guide wire tube respectively disposed on both sides of the middle part of the housing, a wire to be melted is fed into the guide wire tube, the second cathode rod and the guide wire tube are connected to the same power source, and the second cathode rod and the wire in the guide wire tube cooperate to generate a melting arc;

[0020] The plasma torch assembly also includes a top seat, which is fixedly mounted on the top of the housing. The sealing plate has a seat hole groove, and the guide wire tube is made of a conductive metal material.

[0021] The bottom of the shell is fixedly installed on the top of the anti-sintering seat, and the shell is directly opposite the lower powder tank; a plasma beam is generated by the first cathode rod and the anode plate, and a melting arc is generated by the second cathode rod and the wire in the guide tube, so that the wire forms metal powder under the combined action of the arc and the beam, and the formed metal powder can directly enter the lower powder tank along the bottom of the shell, which is convenient for subsequent gas-solid separation and magnetic absorption collection.

[0022] Preferably, the two-stage plasma gas homogenization assembly includes a homogenization ring chamber. Multiple air inlet pipes are fixedly arranged along the edge of the homogenization ring chamber, and a bottom ring disk is rotatably arranged on the inner wall of the bottom of the homogenization ring chamber. Multiple exhaust pipes are rotatably arranged on the bottom ring disk. A stirring vane is fixedly arranged at the top of each exhaust pipe, and an outer wall gear is fixedly arranged in the middle of each exhaust pipe. A guide rail gear ring is arranged below the bottom ring disk. A second drive motor is fixedly arranged at the top of the homogenization ring chamber. A main shaft tube is arranged on the output shaft of the second drive motor, and a gear ring is fixedly arranged at the bottom of the main shaft tube. Multiple mixed gases are introduced into the homogenization ring chamber through the multiple air inlet pipes. Through the cooperation of the exhaust pipes, stirring vanes, outer wall gear, guide rail gear ring, and gear ring, the exhaust pipes revolve and rotate within the homogenization ring chamber, thereby agitating and homogenizing the multiple mixed gases and introducing them into the housing in a circulatory manner.

[0023] Preferably, the bottom of the homogenizing ring chamber is fixedly mounted on the top seat, and the guide rail gear ring is fixedly mounted on the inner wall of the top seat. The guide rail gear ring, the outer wall gear, and the gear ring are on the same horizontal plane. The two sides of the outer wall gear mesh with the guide rail gear ring and the gear ring, respectively. The bottom of the exhaust pipe is rotatably mounted at the seat hole groove position. This allows the outer wall gear to rotate through the gear ring, and the fixed guide rail gear ring to make the outer wall gear move along the guide rail gear ring. This causes the exhaust pipe to rotate and revolve synchronously, ensuring a more uniform circumferential distribution of various air-fuel mixtures when they enter the housing.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] 1. This application sets up a gas-solid separation roller assembly inside the anti-sintering component, and a magnetic separation screen assembly inside the gas-solid separation roller assembly, so that the gas entering the device and the metal powder can be separated during the flow process. The metal powder is magnetically intercepted by the separation magnetic screen, and the gas is discharged through the air inlet and the air outlet. This achieves the simultaneous operation of gas guidance and powder magnetic separation, avoids the large-scale discharge of powder with the airflow, and improves the stability and recovery effect of metal powder separation.

[0026] 2. This application enables multiple powder collection tanks to receive, separate and discharge metal powder sequentially by rotating the separation roller. With the arrangement of the separation magnetic screen in the powder collection tank, the powder is continuously subjected to magnetic sieving as it rotates with the separation roller. This avoids the problems of local accumulation and single separation area that are easy to occur in traditional fixed sieving structures, and improves the continuity and processing efficiency of the magnetic separation process.

[0027] 3. This application utilizes the combination of a wave-shaped track ring, rollers, abutting sliding rods, and abutting springs to cause the separating roller to rotate and drive the separating magnetic screen to reciprocate, thereby prompting the metal powder adsorbed or retained on the separating magnetic screen to fall off in time and enter the powder collection pipe. This reduces powder residue and blockage on the surface of the magnetic screen, enabling the magnetic separating screen assembly to maintain good separation flow and continuous working capacity, and improving the reliability of the device in long-term operation.

[0028] 4. This application sets the anti-sintering seat as a hollow structure and connects it to the external cooling circulating water through a water pipe, so that a continuous cooling environment is formed inside the anti-sintering component. After the metal powder enters the magnetic separation and collection area, it can reduce the risk of powder sticking or sintering due to high temperature retention and local accumulation, and avoid blockage or material accumulation in the separation magnetic screen, powder collection tank and powder collection pipe, thereby ensuring the smoothness of the magnetic separation process and improving the reliability of continuous collection and stable separation of the device.

[0029] 5. This application, by setting a first cathode rod, an anode plate, a second cathode rod, and a guide wire tube inside the shell, enables the wire to be melted and form metal powder under the combined action of electric arc and beam current, providing a continuous and stable powder source for subsequent magnetic separation; at the same time, by setting a two-stage plasma gas homogenization component, the various mixed gases are stirred and mixed in the homogenization ring chamber before entering the shell, and the circular distributed introduction is achieved through the revolution and rotation of the exhaust pipe, thereby improving the uniformity of the distribution of mixed gases entering the shell, making the metal powder formation process more stable, and also helping the powder to maintain a relatively uniform flow state when it enters the magnetic separation area. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of a magnetic metal powder separation device for plasma powder preparation according to this application;

[0031] Figure 2 This is a cross-sectional view of the gas-solid separation roller assembly of this application;

[0032] Figure 3 This is a perspective view of the magnetic separation screen assembly of this application;

[0033] Figure 4 This is a perspective view of the anti-sintering component of this application;

[0034] Figure 5 This is a perspective view of a magnetic metal powder separation device for plasma powder preparation according to this application.

[0035] Figure 6 This is a cross-sectional view of the plasma torch assembly of this application;

[0036] Figure 7 This is a cross-sectional view of the two-stage plasma gas homogenization assembly of this application.

[0037] Explanation of reference numerals in the attached drawings: 100, Plasma torch assembly; 101, Housing; 102, Sealing slot; 103, Sealing plate; 104, Top seat; 105, First cathode rod; 106, Second cathode rod; 107, Guide wire tube; 108, Anode plate; 200, Two-stage plasma gas homogenization assembly; 201, Homogenization ring chamber; 202, Second drive motor; 203, Main shaft tube; 204, Gear ring; 205, Stirring blade; 206, Inlet pipe; 207, Bottom ring plate; 208, Guide rail gear ring; 209, Outer wall gear; 210, Exhaust pipe; 300, Anti-sintering assembly; 301, Anti-sintering seat; 302, U 303. First drive motor; 304. Seat groove; 305. Powder collecting pipe; 306. Water pipe; 307. Side rod; 308. Wave-shaped rail ring; 309. Lower powder trough; 400. Gas-solid separation roller assembly; 401. Separation roller; 402. End groove; 403. End shaft tube; 404. Roller groove; 405. Air inlet; 406. Air guide pipe; 407. Exhaust pipe; 408. Side guide sliding hole; 409. Screen sliding groove; 410. Powder collecting trough; 500. Magnetic separation screen assembly; 501. Separating magnetic screen; 502. End plate; 503. Contact spring; 504. Contact sliding rod; 505. Roller. Detailed Implementation

[0038] 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 skilled in the art without creative effort are within the scope of protection of this application.

[0039] Please see Figures 1-7 As shown, this application provides a magnetic metal powder separation device for plasma powder preparation, including an anti-sintering component 300 to prevent metal powder from sintering at high temperature. The anti-sintering component 300 is internally provided with a gas-solid separation roller assembly 400 for gas guidance and powder collection. The gas-solid separation roller assembly 400 is internally provided with a magnetic separation sieve assembly 500 for dynamic separation of powder. A plasma torch assembly 100 is fixedly provided on the top of the anti-sintering component 300. A plasma gas two-stage homogenization component 200 is provided on the top of the plasma torch assembly 100.

[0040] In a preferred embodiment, please refer to Figure 4 The anti-sintering component 300 includes an anti-sintering seat 301. The top of the anti-sintering seat 301 is provided with a powder trough 309 for receiving powder gas-solid material, and the bottom of the anti-sintering seat 301 is provided with a powder collecting pipe 305. The interior of the anti-sintering seat 301 is provided with a seat groove 304 that communicates with the powder trough 309 and the powder collecting pipe 305. A corrugated track ring 308 is provided on one side of the anti-sintering seat 301.

[0041] In this embodiment, the anti-sintering component 300 also includes a water pipe 306. Water pipes 306 are provided on both sides of the anti-sintering seat 301, and U-shaped end frame 302 and side rod 307 are fixedly provided at both ends of the anti-sintering seat 301, respectively. A first drive motor 303 is provided on the U-shaped end frame 302.

[0042] In this embodiment, the wave-shaped rail ring 308 is fixed on the side rod 307, the anti-sintering seat 301 has a hollow structure inside, and the interior of the anti-sintering seat 301 is connected to the external cooling circulating water through the water pipe 306.

[0043] In a preferred embodiment, please refer to Figure 2 The gas-solid separation roller assembly 400 includes a separation roller 401 rotatably disposed in a seat groove 304 and an air guide pipe 406 disposed inside the separation roller 401. The edge of the separation roller 401 is provided with a plurality of powder collection grooves 410 for receiving powder gas-solid materials. A sieve sliding groove 409 is provided in the powder collection groove 410. An air inlet 405 is provided at the top of the air guide pipe 406. An exhaust pipe 407 is provided at one end of the air guide pipe 406.

[0044] In this embodiment, the gas-solid separation roller assembly 400 further includes a roller groove 404, which is opened at the center of the separation roller 401. One end of the separation roller 401 is fixedly provided with an end shaft tube 403, and the two ends of the screen sliding groove 409 are respectively provided with end grooves 402. The end of the separation roller 401 away from the end shaft tube 403 is provided with a side guide sliding hole 408.

[0045] In this embodiment, the end shaft tube 403 is connected to the output shaft of the first drive motor 303.

[0046] In this embodiment, the separating roller 401 is rotatably disposed within the seat groove 304.

[0047] In this embodiment, the air duct 406 is rotatably disposed within the roller groove 404.

[0048] In this embodiment, the exhaust pipe 407 is fixedly connected to the corrugated rail ring 308.

[0049] In a preferred embodiment, please refer to Figure 3 The magnetic separation screen assembly 500 includes a separation magnetic screen 501 slidably disposed in the screen sliding groove 409. One end of the separation magnetic screen 501 is connected to an abutting sliding rod 504. The end of the abutting sliding rod 504 is provided with a roller 505 that abuts against the wave-shaped track ring 308. The other end of the separation magnetic screen 501 is provided with an abutting spring 503.

[0050] In this embodiment, the magnetic separation screen assembly 500 further includes an end plate 502, which is fixedly disposed at the end of the separation magnetic screen 501 away from the sliding rod 504.

[0051] In this embodiment, the separating magnetic sieve 501 slides within the powder collection tank 410 via the sieve sliding groove 409.

[0052] In this embodiment, the end plate 502 slides within the end groove 402.

[0053] In this embodiment, the two ends of the abutment spring 503 are respectively fixedly disposed on the inner wall of the end plate 502 and the end groove 402.

[0054] In this embodiment, the abutting sliding rod 504 slides through the side guide sliding hole 408 and the separating roller 401.

[0055] In this embodiment, the pushing action of the spring 503 on the separating magnetic screen 501 causes the roller 505 at one end of the sliding rod 504 to abut against the wave-shaped track ring 308.

[0056] In a preferred embodiment, please refer to Figure 6 The plasma torch assembly 100 includes a housing 101. A sealing disk 103 is rotatably disposed on the inner wall of the top of the housing 101. A first cathode rod 105 is rotatably disposed at the center of the sealing disk 103. An anode plate 108 is disposed on the inner wall of the top of the housing 101, which is connected to the first cathode rod 105 by the same power source and cooperates to generate a plasma beam. A second cathode rod 106 and a guide wire tube 107 are respectively disposed on both sides of the middle part of the housing 101. A wire to be melted is fed into the guide wire tube 107. The second cathode rod 106 and the guide wire tube 107 are connected to the same power source. The wire in the second cathode rod 106 and the guide wire tube 107 cooperate to generate a melting arc.

[0057] In this embodiment, the plasma torch assembly 100 also includes a top seat 104, which is fixedly disposed at the top of the housing 101. The sealing plate 103 has a seat hole groove 102, and the guide wire tube 107 is made of a metal material with conductive function.

[0058] In this embodiment, the bottom of the housing 101 is fixedly mounted on the top of the anti-sintering seat 301, and the housing 101 is directly opposite the lower powder tank 309.

[0059] In a preferred embodiment, please refer to Figure 7The two-stage plasma gas homogenization assembly 200 includes a homogenization ring chamber 201. Multiple air inlet pipes 206 are fixedly arranged on the edge of the homogenization ring chamber 201. A bottom ring plate 207 is rotatably arranged on the inner wall of the bottom of the homogenization ring chamber 201. Multiple exhaust pipes 210 are rotatably arranged on the bottom ring plate 207. An agitator 205 is fixedly arranged on the top of the exhaust pipe 210. An outer wall gear 209 is fixedly arranged in the middle of the exhaust pipe 210. A guide rail gear ring 208 is arranged below the bottom ring plate 207. A second drive motor 202 is fixedly arranged at the top of the homogenization ring chamber 201. A main shaft tube 203 is arranged on the output shaft of the second drive motor 202. A gear ring 204 is fixedly arranged at the bottom of the main shaft tube 203.

[0060] In this embodiment, the bottom of the homogenization ring chamber 201 is fixedly mounted on the top seat 104.

[0061] In this embodiment, the guide rail toothed ring 208 is fixedly mounted on the inner wall of the top seat 104.

[0062] In this embodiment, the guide rail gear ring 208, the outer wall gear 209, and the gear ring 204 are on the same horizontal plane.

[0063] In this embodiment, the outer wall gear 209 meshes with the guide rail gear ring 208 and gear ring 204 on both sides, respectively.

[0064] In this embodiment, the bottom of the exhaust pipe 210 is rotatably positioned at the seat hole groove 102.

[0065] The working principle of this application is as follows: The anti-sintering component 300 is located at the bottom of the plasma torch component 100. In actual use, when the metal powder generated by the plasma torch component 100 enters the anti-sintering component 300, in order to solve the separation of plasma gas and powder generated at the bottom of the plasma torch component 100, the anti-sintering component 300 is equipped with a gas-solid separation roller assembly 400 for gas guidance and powder collection. The separation roller 401 is rotatably mounted in the seat groove 304, and the air guide pipe 406 is rotatably mounted in the roller groove 404. In actual use, the exhaust pipe 406... 07 is connected to the external gas collection chamber. At this time, the gas-solid material ejected from the bottom of the plasma torch assembly 100 fills the powder collection tank 410 and flows to the exhaust pipe 407 through the air inlet 405. During the flow process, a magnetic separation screen assembly 500 is provided in the screen sliding groove 409. The powder gas-solid material is separated by the magnetic separation screen assembly 500. Through the above structure, the plasma gas and powder discharged from the bottom of the plasma torch assembly 100 are separated. The powder is magnetically intercepted and separated by the magnetic separation screen assembly 500, while the plasma gas enters the air inlet 405 and flows to the exhaust pipe 407.

[0066] Through the above structural configuration, this application utilizes the vertical connection and internal and external nesting relationship between the anti-sintering component 300, the gas-solid separation roller component 400, and the magnetic separation screen component 500 to immediately separate and magnetically retain the plasma gas carrying the powder after the plasma torch component 100 completes the metal powder formation. Among them, the separation roller 401, the powder collection tank 410, the air inlet 405, the air guide pipe 406, and the exhaust pipe 407 form a continuous gas outlet channel, and the separation magnetic screen 501 forms a powder magnetic retention interface. This realizes the spatial separation of the powder movement path and the gas emission path, avoids the direct escape of metal powder with the plasma gas, and improves the directionality of powder collection, separation efficiency, and subsequent collection stability.

[0067] Based on the above, in order to solve the problem of powder collection after atomization, this application rotatably sets the gas-solid separation roller assembly 400 inside the anti-sintering assembly 300. During the rotation of the gas-solid separation roller assembly 400, when the separation roller 401 faces downward, the powder filtered in the powder collection tank 410 falls into the powder collection pipe 305, thus achieving powder collection. At the same time, this application pushes the separation magnetic screen 501 with the contact spring 503, and the roller 505 at one end of the contact sliding rod 504 abuts against the corrugated track ring 308. When the gas-solid separation roller assembly 400 rotates, the roller 505 at one end of the magnetic separation screen assembly 500 moves against the corrugated track ring 308. Since the corrugated track ring 308 has a concave-convex structure, during the movement, the magnetic separation screen assembly 500 forms a dynamic vibration structure in the powder collection tank 410. Through this vibration, the powder on the magnetic separation screen assembly 500 can fall more fully into the powder collection pipe 305.

[0068] Through the above structural configuration, this application enables the gas-solid separation roller assembly 400 to simultaneously perform material receiving, screening, tumbling discharge, and vibration de-powdering functions during rotation. The separation roller 401 drives the powder collection trough 410 to sequentially be in receiving, separating, and downward discharge states. In conjunction with the mechanical undulating drive relationship formed by the wave-shaped track ring 308, roller 505, contact sliding rod 504, and contact spring 503, the magnetic separation screen assembly 500 can form synchronous reciprocating vibration without the need for an additional vibration motor. This not only enables the timely removal of powder adsorbed or retained on the surface of the separation magnetic screen 501, but also reduces the risk of magnetic attenuation and screen blockage caused by continuous accumulation of powder on the local screen surface, achieving continuous, self-cleaning, and highly reliable operation of the powder separation process.

[0069] Based on the above, in order to avoid the high-temperature sintering of the powder ejected from the plasma torch assembly 100 during separation, the anti-sintering seat 301 of this application has a hollow structure. The interior of the anti-sintering seat 301 is connected to the external cooling circulating water through a water pipe 306. Through this structure, a cooling environment is formed inside the anti-sintering assembly 300, thereby avoiding the high-temperature sintering of the powder during magnetic separation and collection.

[0070] With the above structural configuration, this application sets the anti-sintering seat 301 as a hollow cooling bearing structure and connects it to the external cooling circulating water through the water pipe 306, so that the powder is in a controlled cooling environment when entering the anti-sintering component 300, the powder collection tank 410 and the powder collection pipe 305. This cooling structure can promptly reduce the thermal impact of the powder's residual heat on the sieve surface, tank and collection channel when the powder has just completed high-temperature atomization and entered the separation and collection area, reduce the probability of powder adhesion, agglomeration, bridging and sintering blockage, thereby ensuring that the magnetic separation sieve component 500 and the powder collection pipe 305 remain unobstructed for a long time and improving the operational stability of the device under continuous plasma powder production conditions.

[0071] Meanwhile, a first cathode rod 105 is provided at the top of the housing 101, and an anode plate 108 is provided on the inner wall of the housing 101. At the same time, a wire guide tube 107 and a second cathode rod 106 are respectively provided on both sides of the middle part of the housing 101. The wire is fed into the housing 101 through the wire guide tube 107. In actual use, a power source is connected between the second cathode rod 106 and the wire guide tube 107. At this time, an electric arc is formed between the second cathode rod 106 and the wire in the wire guide tube 107. This electric arc is used to melt the wire. At the same time, the first cathode rod 105 and the anode plate 108 are connected to another power source to generate a plasma beam. Under the combined action of the plasma beam and the electric arc, the wire is efficiently melted and atomized into powder. It should also be noted that when atomizing into powder, a plasma gas composed of various mixed gases is introduced into the plasma torch assembly 100.

[0072] Through the above structural configuration, this application establishes a powder generation mechanism that combines arc melting and plasma beam atomization within the plasma torch assembly 100. The guide tube 107, while conveying the filament, participates in arc formation as a conductive component. The second cathode rod 106 works with the filament in the guide tube 107 to complete the primary melting. The first cathode rod 105 works with the anode plate 108 to form a high-energy plasma beam, which further breaks down, atomizes, and forms powder from the molten metal. This allows the filament melting process, atomization process, and powder falling process to be continuously connected within the housing 101, providing a stable, continuous, and directional powder source for the lower anti-sintering assembly 300 and the gas-solid separation roller assembly 400, thereby improving the synergy between the powder making and separation processes.

[0073] Based on the above, in order to solve the problem of uniformity in the distribution and mixing of various mixed gases introduced into the plasma torch assembly 100, this application provides a two-stage plasma gas homogenization assembly 200 at the top of the plasma torch assembly 100. The two-stage homogenization assembly 200 homogenizes the various plasma gases introduced into the plasma torch assembly 100 in two stages. In actual use, various gases are introduced into the homogenization ring chamber 201 through the air inlet pipe 206. At this time, the second drive motor 202 is started, driving the gear ring 204 to rotate. The gear ring 204 drives the outer wall gear 209 to rotate. Since the outer wall gear 209 is meshed on the guide rail gear ring 208, and the guide rail gear ring 208 is fixed, when the outer wall gear... When the wheel 209 rotates, the outer wall gear 209 meshes with the guide rail gear ring 208 and moves within the guide rail gear ring 208. At this time, the exhaust pipe 210 forms a structure of revolution and rotation within the homogenization ring chamber 201. During the revolution and rotation, the stirring plate 205 at the top of the exhaust pipe 210 stirs and homogenizes the various plasma gases in the homogenization ring chamber 201. At the same time, during the revolution and rotation, the plasma gas discharged from the bottom of the exhaust pipe 210 will be distributed in a circular and spiral manner and filled into the shell 101. Through this structure, the top revolution and rotation stirring are achieved, and the bottom revolution and rotation filling are achieved, thereby ensuring the uniformity of various plasma gases when filling the plasma torch assembly 100.

[0074] With the above structural configuration, this application utilizes a two-stage plasma gas homogenization assembly 200 to dynamically pre-treat various plasma gases before they enter the system. The second drive motor 202 drives the outer wall gear 209 through the main shaft tube 203 and the gear ring 204. Under the constraint of the guide rail gear ring 208, the outer wall gear 209 drives the exhaust pipe 210 to rotate and revolve. The stirring plate 205 at the top of the exhaust pipe 210 completes the rotational stirring of the gas in the homogenization ring chamber 201. The bottom of the exhaust pipe 210 sends the homogenized gas into the housing 101 in a circumferential and spiral manner. This achieves dual control of gas mixing homogenization and gas distribution homogenization, avoiding beam deflection, uneven melting, and disordered powder movement caused by local concentration differences or flow rate differences in multi-component plasma gases. This further improves the quality of metal powder formation and the stability of the subsequent magnetic separation process.

[0075] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetic metal powder separation device for plasma powder preparation, comprising an anti-sintering component (300) to prevent high-temperature sintering of metal powder, characterized in that, The anti-sintering component (300) is internally provided with a gas-solid separation roller assembly (400) for gas guidance and powder collection, and the gas-solid separation roller assembly (400) is internally provided with a magnetic separation sieve assembly (500) for dynamic separation of powder. The anti-sintering component (300) includes an anti-sintering seat (301), the top of the anti-sintering seat (301) is provided with a powder trough (309) for receiving powder gas-solid material, the bottom of the anti-sintering seat (301) is provided with a powder collecting pipe (305), the inside of the anti-sintering seat (301) is provided with a seat groove (304) communicating with the powder trough (309) and the powder collecting pipe (305), and a corrugated track ring (308) is provided on one side of the anti-sintering seat (301). The gas-solid separation roller assembly (400) includes a separation roller (401) rotatably disposed in the seat groove (304) and an air guide pipe (406) disposed inside the separation roller (401). The separation roller (401) has multiple powder collection grooves (410) for receiving powder gas-solid materials on its edge. The powder collection grooves (410) have a sieve sliding groove (409) in their interiors. The air guide pipe (406) has an air inlet (405) at its top and an exhaust pipe (407) at one end. The magnetic separation screen assembly (500) includes a separation magnetic screen (501) slidably disposed in the screen sliding groove (409). One end of the separation magnetic screen (501) is connected to an abutting sliding rod (504). The end of the abutting sliding rod (504) is provided with a roller (505) that abuts against the wave-shaped track ring (308). The other end of the separation magnetic screen (501) is provided with an abutting spring (503). The anti-sintering component (300) is fixedly provided with a plasma torch component (100) on top, and a two-stage plasma gas homogenization component (200) is provided on top of the plasma torch component (100). The plasma torch assembly (100) includes a housing (101), a sealing disk (103) is rotatably disposed on the inner wall of the top of the housing (101), a first cathode rod (105) is rotatably disposed at the center of the sealing disk (103), an anode plate (108) is disposed on the inner wall of the top of the housing (101) and is connected to the same power source as the first cathode rod (105) to generate a plasma beam, a second cathode rod (106) and a guide wire tube (107) are respectively disposed on both sides of the middle part of the housing (101), a wire to be melted is fed into the guide wire tube (107), the second cathode rod (106) and the guide wire tube (107) are connected to the same power source, and the wire in the second cathode rod (106) and the guide wire tube (107) cooperate to generate a melting arc; The plasma torch assembly (100) also includes a top seat (104), which is fixedly mounted on the top of the housing (101). The sealing plate (103) has a seat hole groove (102), and the guide wire tube (107) is made of a metal material with conductive function. The bottom of the housing (101) is fixedly installed on the top of the anti-sintering seat (301), and the housing (101) is directly opposite the lower powder tank (309); The two-stage plasma gas homogenization assembly (200) includes a homogenization ring chamber (201), with multiple air inlet pipes (206) fixedly arranged on the edge of the homogenization ring chamber (201), and a bottom ring plate (207) rotatably arranged on the inner wall of the bottom of the homogenization ring chamber (201). Multiple exhaust pipes (210) are rotatably arranged on the bottom ring plate (207), with a stirring plate (205) fixedly arranged on the top of the exhaust pipe (210), and an outer wall gear (209) fixedly arranged in the middle of the exhaust pipe (210). A guide rail gear ring (208) is arranged below the bottom ring plate (207), and a second drive motor (202) is fixedly arranged at the top of the homogenization ring chamber (201). A main shaft tube (203) is arranged on the output shaft of the second drive motor (202), and a gear ring (204) is fixedly arranged at the bottom of the main shaft tube (203).

2. The magnetic metal powder separation device for plasma powder preparation according to claim 1, characterized in that: The anti-sintering component (300) also includes a water pipe (306). The anti-sintering seat (301) is provided with water pipes (306) on both sides. The anti-sintering seat (301) is fixedly provided with a U-shaped end frame (302) and a side rod (307) at both ends. The U-shaped end frame (302) is provided with a first drive motor (303). The waveform rail ring (308) is fixed on the side rod (307). The anti-sintering seat (301) has a hollow structure inside. The anti-sintering seat (301) is connected to the external cooling circulating water through a water pipe (306).

3. The magnetic metal powder separation device for plasma powder preparation according to claim 2, characterized in that: The gas-solid separation roller assembly (400) also includes a roller groove (404), which is located at the center of the separation roller (401). One end of the separation roller (401) is fixedly provided with an end shaft tube (403), and the two ends of the screen sliding groove (409) are respectively provided with end grooves (402). The end of the separation roller (401) away from the end shaft tube (403) is provided with a side guide sliding hole (408).

4. A magnetic metal powder separation device for plasma powder preparation according to claim 3, characterized in that: The magnetic separation screen assembly (500) also includes an end plate (502), which is fixedly disposed at the end of the separation magnetic screen (501) away from the sliding rod (504); The separating magnetic sieve (501) slides in the powder collection tank (410) through the sieve sliding groove (409), and the end plate (502) slides in the end groove (402).

5. A magnetic metal powder separation device for plasma powder preparation according to claim 4, characterized in that: The two ends of the contact spring (503) are fixedly mounted on the inner walls of the end plate (502) and the end groove (402), respectively. The contact sliding rod (504) slides through the side guide sliding hole (408) and the separating roller (401). The contact spring (503) pushes the separating magnetic screen (501), and the roller (505) at one end of the contact sliding rod (504) abuts against the wave-shaped track ring (308).

6. A magnetic metal powder separation device for plasma powder preparation according to claim 3, characterized in that: The end shaft tube (403) is connected to the output shaft of the first drive motor (303), the separation roller (401) is rotatably disposed in the seat groove (304), the air guide pipe (406) is rotatably disposed in the roller groove (404), and the exhaust pipe (407) is fixedly connected to the wave-shaped rail ring (308).

7. A magnetic metal powder separation device for plasma powder preparation according to claim 1, characterized in that: The homogenization ring chamber (201) is fixedly mounted on the top seat (104) at the bottom. The guide rail gear ring (208) is fixedly mounted on the inner wall of the top seat (104). The guide rail gear ring (208), the outer wall gear (209) and the gear ring (204) are on the same horizontal plane. The outer wall gear (209) meshes with the guide rail gear ring (208) and the gear ring (204) on both sides respectively. The exhaust pipe (210) is rotatably mounted at the seat hole groove (102) at the bottom.

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