Atomizing nozzle for gas atomizing furnace

Abstract

The utility model discloses an atomization nozzle for gas atomization furnace relates to atomization nozzle device field, including the flow guide pipe and the shower nozzle, the shower nozzle is located below the flow guide pipe and is linked with the flow guide pipe, the flow guide pipe inside installation has the conical part, the conical part is the conical design of little up big down, the conical part inside is the hollow design, the conical part lower surface is provided with the flow outlet, a plurality of annular grooves are seted up on the conical part, a plurality of annular grooves are seted up on the arc face, a plurality of annular grooves are seted up with the through -hole, the through -hole is linked with the conical part inside. The conical part and a plurality of annular grooves are seted up in the utility model, make metal liquid receive multistage resistance adjustment in the flowing process, make it reach stable and moderate speed before entering the shower nozzle, and also can carry out step -by -step interception to different size's impurity in the process of flowing.

Description

Technical Field

[0001] This utility model relates to the field of atomizing nozzle devices, and in particular to an atomizing nozzle for a gas atomizing furnace. Background Technology

[0002] Vacuum atomizing furnaces are specialized equipment for producing high-grade spherical metal powders and hold an important position in the powder metallurgy industry. In a vacuum environment, the alloy is melted, refined, and degassed in a medium-frequency induction melting furnace. The molten metal is poured into a preheated tundish crucible, and flows along the guide pipe at the bottom of the crucible through the atomizing nozzle. There, it is broken into fine droplets by a high-pressure inert gas stream ejected from the spray plate, and after cooling, becomes spherical metal powder.

[0003] In traditional atomization devices, molten metal flows directly from the gas atomizing furnace into the atomizing nozzle through a guide tube. Due to the lack of an effective guiding structure, the flow rate of the molten metal is too fast or too slow, which will affect the atomization effect. Traditional atomization devices have difficulty effectively controlling the flow rate of the molten metal, resulting in unstable atomization effect. In addition, molten metal usually contains impurities, which may mix into the metal particles during the atomization process, reducing the purity of the metal powder.

[0004] Therefore, it is necessary to propose an atomizing nozzle for a gas atomizing furnace to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an atomizing nozzle for a gas atomizing furnace.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an atomizing nozzle for a gas atomizing furnace, comprising a guide pipe and a nozzle head;

[0007] The nozzle is located below the guide pipe and is connected to the guide pipe;

[0008] A tapered component is installed inside the flow guide tube;

[0009] The conical component has a conical design that is smaller at the top and larger at the bottom. The interior of the conical component is hollow. An outlet is provided on the lower surface of the conical component. Multiple annular grooves are provided on the conical component. Arc-shaped surfaces are provided on the multiple annular grooves. Through holes are provided around the multiple annular grooves. The through holes are connected to the interior of the conical component.

[0010] Preferably, the plurality of annular grooves include: a first annular groove, a second annular groove, a third annular groove and a fourth annular groove, wherein the first annular groove is located near the upper part of the outer surface of the tapered member, and the second annular groove, the third annular groove and the fourth annular groove are located below the first annular groove in sequence;

[0011] Among them, the first annular groove has the smallest diameter, the second annular groove has a larger diameter than the first annular groove, and so on, with the fourth annular groove having the largest diameter.

[0012] Preferably, the through hole diameter on the first annular groove is the largest, the through hole diameter on the second annular groove is smaller than that on the first annular groove, and so on, with the through hole diameter on the fourth annular groove being the smallest.

[0013] Preferably, a first punch plate is installed inside the tapered member and below the first annular groove, a second punch plate is installed inside the tapered member and below the second annular groove, a third punch plate is installed inside the tapered member and below the third annular groove, and a fourth punch plate is installed inside the tapered member and below the fourth annular groove.

[0014] Preferably, an atomizing furnace is installed above the guide pipe, and support frames are installed on both sides of the atomizing furnace.

[0015] Preferably, an atomizing box is installed below the nozzle.

[0016] Preferably, a high-pressure spray disc is installed on the upper surface inside the atomizing box, and heating coils are installed on the upper surface of the atomizing box and on both sides of the guide tube.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. The conical part and multiple annular grooves provided in this utility model allow the molten metal to be subjected to multi-level resistance adjustment during the flow process. The diameter of the annular groove gradually increases and the diameter of the through hole gradually decreases. This structural design can effectively slow down the flow rate of the molten metal, so that it reaches a stable and moderate speed before entering the nozzle. This precise flow rate control significantly improves the stability of the atomization effect and avoids the problem of inconsistent atomized particle size caused by uneven flow rate.

[0019] 2. The conical component and through hole in this utility model, through the multi-stage perforated plate design inside the conical component, combined with the screening effect of the through hole, form a multi-stage filtration system. When the molten metal passes through these structures, impurities of different sizes are intercepted step by step, effectively reducing the possibility of impurities entering the nozzle. This efficient impurity screening mechanism significantly improves the purity of the molten metal, thereby ensuring the high quality of the atomized metal powder and improving the application performance of the product. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an atomizing nozzle for a gas atomizing furnace according to the present invention.

[0021] Figure 2 This is an internal view of the atomizing chamber of an atomizing nozzle for a gas atomizing furnace according to the present invention.

[0022] Figure 3 This is a schematic diagram of an atomizing nozzle for a gas atomizing furnace according to the present invention;

[0023] Figure 4 This is a schematic diagram of a conical part of an atomizing nozzle for a gas atomizing furnace according to the present invention;

[0024] Figure 5 This is a cross-sectional view of the conical part of an atomizing nozzle for a gas atomizing furnace according to the present invention;

[0025] In the diagram: 1. Gas atomizing furnace; 2. Guide pipe; 3. Nozzle; 4. Atomizing box; 5. Heating coil; 6. Support frame; 7. High-pressure spray disc; 8. Conical component; 9. First annular groove; 10. Second annular groove; 11. Third annular groove; 12. Fourth annular groove; 13. Through hole; 14. First perforated plate; 15. Second perforated plate; 16. Third perforated plate; 17. Fourth perforated plate; 18. Outlet; 19. Arc-shaped surface. Detailed Implementation

[0026] This utility model provides an atomizing nozzle for a gas atomizing furnace. Please refer to the appendix. Figure 1 - Appendix Figure 2 As shown.

[0027] The device mainly consists of a guide pipe 2, a nozzle 3, and a high-pressure spray disc 7, forming an atomization assembly. The upper part of the guide pipe 2 is connected to the gas atomizing furnace 1, and the two sides of the gas atomizing furnace 1 are also equipped with support frames 6 to stabilize the entire device. Furthermore, the lower part of the nozzle 3 is connected to the atomization box 4, providing a basic structural framework for subsequent atomization operations. This ensures that the molten metal can flow smoothly from the gas atomizing furnace 1 through the guide pipe 2 and the nozzle 3 to the atomization box 4, achieving efficient atomization operations.

[0028] Specifically, a high-pressure spray disc 7 is installed on the upper surface inside the atomizing box 4 for atomizing the molten metal. At the same time, heating coils 5 are also installed on the upper surface of the atomizing box 4, on both sides of the guide pipe 2. The function of the heating coils 5 is to provide the necessary heat support for the atomization process.

[0029] The high-pressure spray disc 7 can generate high pressure on the molten metal, which can better disperse it into fine particles during the atomization process, thereby improving the atomization effect. The heating coil 5 can ensure that the temperature inside the atomization box 4 is suitable, so that the molten metal maintains good fluidity during the atomization process, further improving the atomization quality.

[0030] Please see the appendix Figure 3 As shown.

[0031] The nozzle 3 is installed below the guide pipe 2 and is connected to the guide pipe 2 to ensure that the molten metal can flow smoothly from the guide pipe 2 into the nozzle 3. A conical part 8 is also installed inside the guide pipe 2. The conical part 8 plays a role in guiding and screening the flow of molten metal.

[0032] Please see the appendix Figure 4 - Appendix Figure 5 As shown.

[0033] The conical component 8 adopts a conical structure that is smaller at the top and larger at the bottom, and its interior is hollow. An outlet 18 is provided on the lower surface of the conical component 8 for the outflow of molten metal. Multiple annular grooves are also provided on the surface of the conical component 8. These annular grooves are provided with arc-shaped surfaces 19. The design of the arc-shaped surfaces 19 helps the molten metal to flow smoothly in the annular grooves. In addition, through holes 13 are provided around the multiple annular grooves. The through holes 13 are connected to the interior of the conical component 8 to form a flow channel system.

[0034] The design of the arc-shaped surface 19 reduces the flow resistance of the molten metal in the annular groove, allowing the molten metal to pass through the annular groove more smoothly. The setting of multiple through holes 13 further increases the flow path of the molten metal, and to a certain extent, performs preliminary homogenization treatment on the molten metal, so that the molten metal can be more evenly distributed before entering the nozzle 3, providing better conditions for atomization.

[0035] Specifically, the multiple annular grooves include: a first annular groove 9, a second annular groove 10, a third annular groove 11, and a fourth annular groove 12. The first annular groove 9 is located near the top of the outer surface of the conical part 8. The second annular groove 10, the third annular groove 11, and the fourth annular groove 12 are located below the first annular groove 9. By setting multiple such annular grooves, the flow speed of the molten metal can be effectively slowed down. The molten metal needs to pass through these annular grooves in sequence during its flow. Each time it passes through an annular groove, it will encounter a certain resistance, thereby gradually reducing the flow speed of the molten metal. This is beneficial for the molten metal to reach a relatively stable and moderate speed before entering the nozzle 3, avoiding poor atomization effect due to excessively fast flow speed.

[0036] Among them, the first annular groove 9 has the smallest diameter, the second annular groove 10 has a larger diameter than the first annular groove 9, and so on, with the fourth annular groove 12 having the largest diameter. This design allows the flow space of the molten metal to gradually increase as it passes through the annular grooves in sequence. This helps to further slow down the flow speed of the molten metal and also facilitates the uniform distribution of the molten metal in different annular grooves, providing better mixing conditions for the subsequent atomization process and thus further improving the atomization effect.

[0037] Specifically, the diameter of the through hole 13 on the first annular groove 9 is the largest, the diameter of the through hole 13 on the second annular groove 10 is smaller than that on the first annular groove 9, and so on, with the diameter of the through hole 13 on the fourth annular groove 12 being the smallest. The design of gradually decreasing diameter of the through hole 13 can, on the one hand, further slow down the flow rate of the molten metal, because the molten metal will encounter greater resistance when passing through the through hole 13 with a smaller diameter. On the other hand, this design can also play a certain role in screening impurities in the molten metal. Larger impurities will be intercepted when passing through the larger diameter through hole 13, thereby reducing the possibility of impurities entering the nozzle 3.

[0038] Specifically, a first perforated plate 14 is installed inside the conical part 8 and below the first annular groove 9; a second perforated plate 15 is installed inside the conical part 8 and below the second annular groove 10; a third perforated plate 16 is installed inside the conical part 8 and below the third annular groove 11; and a fourth perforated plate 17 is installed inside the conical part 8 and below the fourth annular groove 12. The diameter of the holes on each perforated plate is the same as the corresponding through holes 13, forming a multi-stage sieving system. This multi-stage sieving design can perform more detailed sieving and filtration of impurities in the molten metal. When the molten metal passes through each perforated plate in sequence, impurities of different sizes will be intercepted according to the size of the holes on the perforated plates, thereby further improving the purity of the molten metal and ensuring the quality of the atomized metal particles.

[0039] In operation, molten metal first flows out of the gas atomizing furnace 1. After entering the guide pipe 2, the molten metal flows downward along the guide pipe 2. The conical component 8 installed inside the guide pipe 2 then comes into play. Its conical structure, which is smaller at the top and larger at the bottom, guides the molten metal, causing it to flow along the surface of the conical component 8 towards the nozzle 3 below. As the molten metal flows on the surface of the conical component 8, it passes through multiple annular grooves (first annular groove 9, second annular groove 10, third annular groove 11, and fourth annular groove 12) in sequence. As the diameter of the annular grooves gradually increases (the first annular groove 9 has the smallest diameter, and the fourth annular groove 12 has the largest diameter), the molten metal encounters a certain resistance when flowing in each annular groove, and the flow speed gradually decreases. At the same time, the annular grooves... The arc-shaped surface 19 design reduces the flow resistance of the molten metal, allowing it to flow smoothly within the annular grooves. Within each annular groove, the molten metal also passes through the surrounding through-holes 13 (the diameter of the through-holes 13 gradually decreases from the first annular groove 9 to the fourth annular groove 12). These through-holes 13 are connected to the interior of the conical member 8. When the molten metal passes through the through-holes 13, on the one hand, it is further slowed down by the resistance; on the other hand, the screening effect of the through-holes 13 can intercept some larger impurities, reducing the possibility of impurities entering the subsequent nozzle 3. At the same time, as the molten metal flows through multiple annular grooves and through-holes 13, it gradually achieves preliminary homogenization, allowing the molten metal to be more evenly distributed before entering the nozzle 3.

[0040] After initial treatment by the annular groove and through-hole 13, the molten metal continues to flow downwards, passing sequentially through multiple perforated plates (first perforated plate 14, second perforated plate 15, third perforated plate 16 and fourth perforated plate 17) installed inside the conical part 8. The diameter of the holes on each perforated plate is the same as the corresponding through-hole 13, forming a multi-stage screening structure. When the molten metal passes through these perforated plates, impurities of different sizes are further intercepted according to the size of the holes on the perforated plates, thereby further improving the purity of the molten metal. After multi-stage screening and treatment, the molten metal finally flows into the nozzle 3.

[0041] At this point, the molten metal has reached a relatively stable and moderate flow rate, and has high purity and uniformity. The nozzle 3 is connected to the atomizing box 4. A high-pressure spray disc 7 is installed on the upper surface of the atomizing box 4. The high-pressure spray disc 7 exerts high pressure on the molten metal, dispersing the molten metal into fine particles to achieve the atomization effect.

Claims

1. An atomizing nozzle for a gas atomizing furnace, characterized in that: Includes a flow guide (2) and a nozzle (3); The nozzle (3) is located below the guide pipe (2) and is connected to the guide pipe (2); A tapered component (8) is installed inside the guide tube (2); The conical part (8) is a conical design with a smaller top and a larger bottom. The interior of the conical part (8) is hollow. An outlet (18) is provided on the lower surface of the conical part (8). Multiple annular grooves are provided on the conical part (8). Arc-shaped surfaces (19) are provided on the multiple annular grooves. Through holes (13) are provided around the multiple annular grooves. The through holes (13) are connected to the interior of the conical part (8).

2. The atomizing nozzle for a gas atomizing furnace according to claim 1, characterized in that: The multiple annular grooves include: a first annular groove (9), a second annular groove (10), a third annular groove (11) and a fourth annular groove (12), wherein the first annular groove (9) is located on the outer surface of the tapered member (8) near the top, and the second annular groove (10), the third annular groove (11) and the fourth annular groove (12) are located below the first annular groove (9) in sequence; Among them, the first annular groove (9) has the smallest diameter, the second annular groove (10) has a larger diameter than the first annular groove (9), and so on, with the fourth annular groove (12) having the largest diameter.

3. The atomizing nozzle for a gas atomizing furnace according to claim 2, characterized in that: The diameter of the through hole (13) on the first annular groove (9) is the largest, the diameter of the through hole (13) on the second annular groove (10) is smaller than that on the first annular groove (9), and so on, the diameter of the through hole (13) on the fourth annular groove (12) is the smallest.

4. The atomizing nozzle for a gas atomizing furnace according to claim 1, characterized in that: A first punch plate (14) is installed inside the tapered member (8) and below the first annular groove (9). A second punch plate (15) is installed inside the tapered member (8) and below the second annular groove (10). A third punch plate (16) is installed inside the tapered member (8) and below the third annular groove (11). A fourth punch plate (17) is installed inside the tapered member (8) and below the fourth annular groove (12).

5. The atomizing nozzle for a gas atomizing furnace according to claim 1, characterized in that: An atomizing furnace (1) is installed above the flow guide pipe (2), and support frames (6) are installed on both sides of the atomizing furnace (1).

6. The atomizing nozzle for a gas atomizing furnace according to claim 1, characterized in that: An atomizing box (4) is installed below the nozzle (3).

7. The atomizing nozzle for a gas atomizing furnace according to claim 6, characterized in that: A high-pressure spray disc (7) is installed on the upper surface inside the atomizing box (4), and a heating coil (5) is installed on the upper surface of the atomizing box (4) and on both sides of the guide pipe (2).

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