Electrode induction melting gas atomization water-cooling spraying disc

Abstract

The utility model relates to an electrode induction melting gas atomization water-cooling spray tray, and belongs to the technical field of metal powder preparation. The structure comprises an upper cover plate (2), a copper guide pipe (4), a lower cover plate (3) and a flange base (1), the upper cover plate (2) and the lower cover plate (3) are detachably connected to the upper end and the lower end of the flange base (1), the upper cover plate (2) is made of brass materials, the copper guide pipe (4) and the upper cover plate (2) are of an integrated structure, and the distance between the upper end face of the lower cover plate (3) and the lower end face of the flange base (1) is adjustable. According to the structure, heat generated by magnetic induction cutting is reduced, and the sealing effect is guaranteed. And the width of the ring peak (20) can be adjusted, so that the production requirement is met. The problems that sealing of an existing upper cover plate (2) and a flange base (1) is prone to being damaged, high-pressure gas enters a smelting chamber and a feeding chamber, the powder making stability is affected, and the air tightness of the feeding chamber is damaged are solved.

Description

Technical Field

[0001] This utility model relates to a water-cooled spray plate for atomizing electrode induction melting gas, belonging to the field of metal powder preparation technology. Background Technology

[0002] The principle of gas atomization is to use a high-speed airflow to agitate and break liquid metal into small droplets, which then solidify into powder. The particle size distribution of powder prepared by this method is generally between 0 and 300 μm. With the widespread application of titanium powder in the electronics and 3C fields, the market demand for titanium powder is growing exponentially. This places increasingly higher demands on the production efficiency of atomization powder manufacturing companies, leading domestic manufacturers to increase the diameter of titanium rods from 50 mm to 70 mm. Some companies are even conducting research on atomization powder manufacturing technology using titanium rods with diameters of 100 mm and even 150 mm.

[0003] The existing spray disc includes an upper cover plate, copper conduit, lower cover plate, and flange base. The upper and lower cover plates are detachably connected to the upper and lower ends of the flange base, respectively, and are sealed to the flange base by sealing rings, forming an annular peak between the upper and lower cover plates. The existing upper cover plate is made of stainless steel, and there is a copper guide tube inside the upper cover plate, which is fixed inside the upper cover plate by a copper pressure plate. As the diameter of the titanium rod increases, the high-frequency induction coil also increases in size. The resulting electromagnetic induction cutting and the thermal radiation of the titanium rod increase the temperature of the atomizing spray disc. Over time, this causes the sealing ring inside the spray disc to soften and fail, or the copper pressure plate screws to melt, allowing high-pressure gas to enter the melting chamber and the feeding chamber. This can range from affecting the stability of the powder making process to severely damaging the airtightness of the feeding chamber. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the seals of the existing top cover plate and flange base are easily damaged, causing high-pressure gas to enter the melting chamber and the feeding chamber, affecting the powdering stability and damaging the airtightness of the feeding chamber.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an electrode induction melting gas atomizing water-cooled spray plate, including an upper cover plate, a copper conduit, a lower cover plate and a flange base. The upper cover plate and the lower cover plate are detachably connected to the upper and lower ends of the flange base. The upper cover plate is made of brass material, and the copper conduit and the upper cover plate are integral structures. A cooling ring pipe is provided on the upper part of the flange base.

[0006] In the above structure, a cooling ring pipe is provided inside the flange base, and the cooling ring pipe is located below the sealing ring A on the upper cover plate and the upper end face of the flange base.

[0007] Furthermore, the outer walls on both sides of the cooling ring pipe in the above structure are provided with circulating water inlet joints and circulating water drain joints in the radial direction.

[0008] Furthermore, an air inlet pipe is provided in the middle of the flange base in the above structure, and the air inlet pipe is located below the circulating water inlet connector and the circulating water drain connector.

[0009] Furthermore, both the circulating water inlet connector and the circulating water outlet connector described in the above structure are quick-connect connectors.

[0010] In the above structure, the upper cover plate is threadedly connected and fixed to the flange base, and the lower cover plate is threadedly connected and fixed to the flange base.

[0011] In the above structure, the distance between the upper end face of the lower cover plate and the lower end face of the flange base is adjustable.

[0012] Furthermore, the lower cover plate in the above structure is provided with a threaded hole, and an adjusting screw is provided in the threaded hole, and the screw-in end of the adjusting screw contacts the lower end face of the flange base.

[0013] Furthermore, the threaded holes in the above structure are arranged at uniform intervals around the circumference.

[0014] Furthermore, the number of threaded holes in the above structure is 2 to 6.

[0015] The beneficial effects of this utility model are:

[0016] 1. This structure changes the upper cover plate from stainless steel to brass, reducing the heat generated by magnetic induction cutting and allowing the sealing ring between the upper cover plate and the flange base to be used for a long time.

[0017] 2. This structure adopts an integrated design of the upper cover plate and copper conduit, eliminating the need for copper pressure plates and copper pressure plate screws, which can reduce the coil height and increase the superheat during droplet breakage.

[0018] 3. The cooling ring pipe installed on the flange base of this structure can achieve water cooling of the sealing surface of the upper cover plate, so that the sealing ring can work stably for a long time without leakage; at the same time, quick couplings are used to facilitate the disassembly of the spray plate, and no water leakage will occur during the disassembly process.

[0019] 4. The lower cover plate of this structure has threaded holes. By tightening the adjusting screw, the bottom plane of the adjusting screw is pressed against the lower metal surface of the flange base. The adjusting screw causes the lower cover plate to move downward as a whole, increasing the width of the annular peak between the upper and lower cover plates. This allows for fine adjustment of the flow rate of high-pressure gas through the spray disc, facilitating the processing of powders in different particle size ranges without the need to replace the spray disc, thus improving the practicality of the spray disc. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the full cross-section of the present invention.

[0021] Figure 2 This is a schematic diagram of the full cross-section of the prior art of this utility model.

[0022] Figure 3 This is a schematic diagram of the cooling ring pipe structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the lower cover plate structure of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the lower cover plate after adjustment.

[0025] In the diagram: 1. Flange base; 2. Upper cover plate; 3. Lower cover plate; 4. Copper conduit; 5. Copper pressure plate; 6. Sealing ring A; 7. Sealing ring B; 8. Sealing ring C; 9. Connecting screw A; 10. Connecting screw B; 11. Connecting screw C; 12. Pressure plate screw; 13. Air inlet pipe; 14. Circulating water inlet connector; 15. Circulating water drain connector; 16. Cooling ring pipe; 17. Adjusting screw; 18. Threaded hole; 19. Through hole; 20. Ring peak. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figures 1 to 5 As shown, this utility model discloses an electrode induction melting gas atomizing water-cooled spray plate, comprising an upper cover plate 2, a copper conduit 4, a lower cover plate 3, and a flange base 1. The upper cover plate 2 and the lower cover plate 3 are detachably connected to the upper and lower ends of the flange base 1. The upper cover plate 2 is made of brass, and the copper conduit 4 and the upper cover plate 2 are integrally formed. A cooling ring pipe 16 is provided on the upper part of the flange base 1. Those skilled in the art will understand that this structure mainly includes an upper cover plate 2, a copper conduit 4, a lower cover plate 3, and a flange base 1, with the upper cover plate 2 and the lower cover plate 3 detachably connected to the upper and lower ends of the flange base 1. The flange base 1 has an inverted T-shaped structure, with a flange on the lower outer side that can connect to the melting chamber, and a sealing ring C8 is provided on the flange sealing surface. The annular peak 20 formed between the upper cover plate 2 and the lower cover plate 3 causes the heated molten metal droplets to be broken into small droplets by the high-speed, high-pressure gas ejected from the annular peak 20, which then cools in the gas flow to form spherical powder. This structure changes the material of the upper cover plate 2 from stainless steel to brass, reducing the heat generated by magnetic induction cutting and allowing the sealing ring between the upper cover plate 2 and the flange base 1 to be used for a longer period. Simultaneously, the upper cover plate 2 and the copper conduit 4 are designed as a single unit, integrating them into one piece, eliminating the need for the copper pressure plate 5 and pressure plate screws 12. This reduces the coil height and improves the superheat during droplet breakage. A cooling ring pipe 16 is installed inside the flange base 1. The cooling medium within the cooling ring pipe 16 cools the sealing surfaces of the flange base 1 and the upper cover plate 2, thereby protecting the sealing ring A6 on the sealing surface.

[0028] Preferably, in the above structure, the cooling ring pipe 16 is located below the sealing ring A6 on the upper end face of the upper cover plate 2 and the flange base 1. Those skilled in the art will understand that, to avoid overheating and damage to the sealing ring A6, it is preferable that the cooling ring pipe 16 is located below the sealing ring A6 on the upper end face of the upper cover plate 2 and the flange base 1. The cooling ring pipe 16 reduces the temperature of the upper cover plate 2, thus extending the service life of the sealing ring A6.

[0029] Preferably, in the above structure, the outer walls of both sides of the cooling ring pipe 16 are provided with a circulating water inlet connector 14 and a circulating water drain connector 15 in a radial direction. Those skilled in the art will understand that, for convenient connection of cooling water, this structure provides a circulating water inlet connector 14 and a circulating water drain connector 15 in a radial direction on both outer walls of the cooling ring pipe 16. In practice, connecting pipes can be provided in a radial direction on both outer walls of the cooling ring pipe 16, with a circulating water inlet connector 14 and a circulating water drain connector 15 respectively provided at the ends of the connecting pipes. In practice, the water inlet pipe and drain pipe can be directly connected externally through the circulating water inlet connector 14 and the circulating water drain connector 15 for use.

[0030] Preferably, in the above structure, an air inlet pipe 13 is provided in the middle of the flange base 1, and the air inlet pipe 13 is located below the circulating water inlet connector 14 and the circulating water drain connector 15. Those skilled in the art will understand that this structure further provides an air inlet pipe 13 in the middle of the flange base 1, and preferably the air inlet pipe 13 is located below the circulating water inlet connector 14 and the circulating water drain connector 15. Furthermore, for ease of installation and connection, this structure preferably uses a threaded connector at the outer end of the air inlet pipe 13, which is actually connected to the argon gas inlet pipe via a threaded metal hose.

[0031] Preferably, the circulating water inlet connector 14 and the circulating water outlet connector 15 in the above structure are both quick-connect connectors. Those skilled in the art will understand that, for ease of connection and disassembly, this structure preferably uses quick-connect connectors for both the circulating water inlet connector 14 and the circulating water outlet connector 15, enabling quick installation and removal of external water inlet and outlet pipes.

[0032] Preferably, in the above structure, the upper cover plate 2 is threadedly connected and fixed to the flange base 1, and the lower cover plate 3 is threadedly connected and fixed to the flange base 1. Those skilled in the art will understand that, for ease of assembly and disassembly, a connecting hole is actually provided on the upper cover plate 2, and a threaded connecting hole is provided at the upper end of the flange base 1, so that the connecting bolt A9 passes through the upper cover plate 2 and connects with the threaded connecting hole at the upper end of the flange base 1 to fix the upper cover plate 2. Simultaneously, a through hole 19 is provided on the lower cover plate 3, and a threaded connecting hole is provided at the lower end of the flange base 1, so that the connecting bolt B10 passes through the lower cover plate 3 and connects with the threaded connecting hole at the lower end of the flange base 1 to fix the lower cover plate 3.

[0033] Preferably, in the above structure, the distance between the upper end face of the lower cover plate 3 and the lower end face of the flange base 1 is adjustable. Those skilled in the art will understand that, in order to facilitate the processing of powders with different particle size ranges using the same spray disc, this structure preferably allows for an adjustable distance between the upper end face of the lower cover plate 3 and the lower end face of the flange base 1. That is, adjusting the width of the annular peak 20 between the upper cover plate 2 and the lower cover plate 3 allows for fine-tuning of the flow rate of high-pressure gas through the spray disc, suitable for processing powders with different particle size ranges. Furthermore, this structure eliminates the need to replace the spray disc, improving its practicality, and can actually increase the production efficiency of atomized powder production by 10%.

[0034] Preferably, in the above structure, the lower cover plate 3 is provided with a threaded hole 18, and an adjusting screw 17 is provided in the threaded hole 18, with the screw-in end of the adjusting screw 17 contacting the lower end face of the flange base 1. Those skilled in the art will understand that, in order to achieve adjustable spacing between the upper end face of the lower cover plate 3 and the lower end face of the flange base 1, i.e., adjustment of the width of the annular peak 20 between the upper cover plate 2 and the lower cover plate 3, this structure specifically provides a threaded hole 18 on the lower cover plate 3, with an adjusting screw 17 provided in the threaded hole 18, and the screw-in end of the adjusting screw 17 contacting the lower end face of the flange base 1. By turning the adjusting screw 17, the spacing between the upper end face of the lower cover plate 3 and the lower end face of the flange base 1 is changed, i.e., the lower cover plate 3 moves downward, thereby achieving adjustment of the width of the annular peak 20 between the upper cover plate 2 and the lower cover plate 3. After the adjusting screw 17 is screwed in to a fixed length, the connecting screw B10 is tightened to fix the lower cover plate 3.

[0035] Preferably, the threaded holes 18 in the above structure are arranged at uniform intervals around the circumference. Those skilled in the art will understand that, in order to ensure a consistent circumferential width of the annular peaks 20, this structure preferably features threaded holes 18 arranged at uniform intervals around the circumference, meaning the adjusting screws 17 are also arranged in a ring shape to ensure the screw-in length at each point.

[0036] Preferably, the number of threaded holes 18 in the above structure is 2 to 6. Those skilled in the art will understand that the actual preferred number of threaded holes 18 in this structure is 2 to 6, and more preferably 3.

[0037] This structure adjustment and installation process

[0038] Adjusting the atomizing spray disc ring peak 20: Install the sealing ring A6 on the upper cover plate 2 and fix it to the flange base 1 using 6 connecting bolts A9; install the sealing ring B7 on the lower cover plate 3, and pass the 6 connecting bolts B10 through the through hole 19 of the lower cover plate 3 into the threaded connection hole of the flange base 1. Tighten the connecting bolts B10 to fix the lower cover plate 3 to the flange base 1. At this time, the ring peak 20 formed between the upper cover plate 2 and the lower cover plate 3 is at its minimum value. If it is necessary to increase the value of the ring peak 20, ... Loosen the six connecting screws B10 by rotating them counterclockwise by the same angle. Then, rotate the three adjusting screws 17 clockwise by the same angle through the threaded holes 18 on the lower cover plate 3, so that the adjusting screws 17 contact the lower inner end face of the flange base 1. Continue to rotate the adjusting screws 17 downwards clockwise, so that the upper end face of the lower cover plate 3 leaves the lower inner end face of the flange base 1. The lower cover plate 3 moves downwards as a whole, and the annular peak 20 becomes larger. When the annular peak 20 reaches the preset value, tighten the six connecting screws B10.

[0039] Installation and Use of the Atomizing Spray Disc: Place the spray disc with the adjusted annular peak 20, fitted with the sealing ring C8, inside the melting chamber, and secure it with six connecting screws C11. Thread the metal bellows to the air inlet pipe 13 of the spray disc, connecting it to the argon gas pipeline. Connect the circulating water inlet connector 14 and the circulating water drain connector 15 to the inlet and drain pipes respectively, and the circulating water will begin operation. During the powdering process, high-pressure gas enters the interior of the spray disc through the air inlet pipe 13. Accelerated within the space formed by the upper cover plate 2 and lower cover plate 3 by the lapping structure, the gas is ejected from the annular peak 20. At this time, the heated and molten metal droplets enter the interior of the upper cover plate 2 of the spray disc. Directly below the upper cover plate 2, they are broken into small droplets by the high-speed, high-pressure gas ejected from the annular peak 20, and cooled in the airflow to form spherical powder.

Claims

1. A water-cooled spray plate for atomizing electrode induction melting gas, comprising an upper cover plate (2), a copper conduit (4), a lower cover plate (3), and a flange base (1), wherein the upper cover plate (2) and the lower cover plate (3) are detachably connected to the upper and lower ends of the flange base (1), characterized in that: The upper cover plate (2) is made of brass material, and the copper conduit (4) and the upper cover plate (2) are an integral structure. A cooling ring pipe (16) is provided on the upper part of the flange base (1).

2. The electrode induction melting gas atomizing water-cooled spray plate according to claim 1, characterized in that: The cooling ring pipe (16) is located below the sealing ring A (6) on the upper end face of the upper cover plate (2) and the flange base (1).

3. The electrode induction melting gas atomizing water-cooled spray plate according to claim 2, characterized in that: The outer walls on both sides of the cooling ring pipe (16) are provided with a circulating water inlet connector (14) and a circulating water drain connector (15) in the radial direction.

4. The electrode induction melting gas atomizing water-cooled spray plate according to claim 3, characterized in that: An air inlet pipe (13) is provided in the middle of the flange base (1), and the air inlet pipe (13) is located below the circulating water inlet connector (14) and the circulating water drain connector (15).

5. The electrode induction melting gas atomizing water-cooled spray plate according to claim 3, characterized in that: Both the circulating water inlet connector (14) and the circulating water outlet connector (15) are quick-connect connectors.

6. The electrode induction melting gas atomizing water-cooled spray plate according to claim 1, characterized in that: The upper cover plate (2) is threadedly connected and fixed to the flange base (1), and the lower cover plate (3) is threadedly connected and fixed to the flange base (1).

7. The electrode induction melting gas atomizing water-cooled spray plate according to claim 1, characterized in that: The distance between the upper end face of the lower cover plate (3) and the lower end face of the flange base (1) is adjustable.

8. The electrode induction melting gas atomizing water-cooled spray plate according to claim 7, characterized in that: The lower cover plate (3) is provided with a threaded hole (18), and an adjusting screw (17) is provided in the threaded hole (18), and the screw-in end of the adjusting screw (17) is in contact with the lower end face of the flange base (1).

9. The electrode induction melting gas atomizing water-cooled spray plate according to claim 8, characterized in that: The threaded holes (18) are arranged at uniform intervals around the circumference.

10. The electrode induction melting gas atomizing water-cooled spray plate according to claim 9, characterized in that: The number of threaded holes (18) is 2 to 6.

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