Supersonic speed circular seam gas atomization spraying disc for preparing spherical powder

Abstract

The utility model relates to the technical field of spherical powder preparation, in particular to a supersonic speed circular seam gas atomization spray disc for preparing spherical powder, which comprises a spray disc upper shell, a spray disc lower shell is connected to the lower part in the spray disc upper shell, two guide rods are fixed in the spray disc lower shell in the vertical direction, and the two guide rods are connected with the spray disc upper shell. Limiting blocks are fixed to the lower ends of the two guide rods, the upper surfaces of the two guide rods are fixedly connected with the inner wall of the spraying disc upper shell, and the inner wall of the spraying disc lower shell is in threaded connection with two adjusting screw rods. According to the spray disc, the adjusting screw rod can be normally rotated by screwing the adjusting screw rod under the cooperation of the fixed bearing, so that the spray disc lower shell which is in threaded connection is driven to vertically move, a gap between the spray disc lower shell and the spray disc upper shell can be adjusted, and the flow of high-pressure gas passing through the gap is finely adjusted; and different types of powder can be processed, the spraying disc does not need to be replaced, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spherical powder preparation, in particular to a supersonic annular gap gas atomization spray disc for preparing spherical powder. Background Art

[0002] With the rapid iteration and development of science and technology, spherical metal powders with fine particle sizes have gradually become the core raw materials for many industrial products, and gas atomization technology has become one of the important methods for large-scale preparation of high-quality metal powders. When preparing metal powders by gas atomization, high-speed airflow impacts the metal liquid flow, breaking it into fine metal droplets, which eventually spheroidize and solidify during flight to form fine metal powders. Since high-pressure inert gas is usually used for atomization, the prepared metal powder has the characteristics of fine particle size, low oxygen content, and high sphericity.

[0003] The patent specification with the announcement number CN217121745U discloses an alloy powder gas atomization spray plate, which includes a spray plate body, a through introduction hole is provided at the center of the inner wall of the spray plate body, an air storage chamber is provided inside the spray plate body outside the introduction hole, a plurality of through jet tubes are provided on the outer wall of the air storage chamber, a through nozzle is provided at one end of the nozzle, and a plurality of nozzles are distributed in a circle with the introduction hole as the center, a rotating shaft 1 is provided on the outer wall of the nozzle, a connecting block for rotation connection is provided on the outer wall of the rotating shaft 1, a conical tooth 1 is provided on the outer wall of the rotating shaft 1, and an adjustment component meshed with the conical tooth 1 is provided on the inner wall of the spray plate body. It can use the nozzle to spray inert gas to the metal liquid to atomize the metal liquid to produce metal powder, and the angle between the nozzle and the metal liquid can be adjusted conveniently and quickly. By adjusting the angle of the nozzle, the inert gas sprayed by it can produce airflows of different strengths on the metal liquid, thereby improving the powder extraction rate.

[0004] However, in the implementation of relevant technologies, it was found that the alloy powder atomization spray disc designed above has the following problems: in the above technical scheme, by arranging a spray pipe, a spray nozzle, a rotating shaft, a connecting block, a conical tooth and an adjusting component, the spray nozzle can be used to spray inert gas to the metal liquid to atomize the metal liquid to produce metal powder, but it can only be used for the production of one kind of powder when in use, so that in the actual production process, when different types of powders or powders of the same type with different characteristics are required, the entire spray disc needs to be replaced. In view of this, a supersonic annular gap atomization spray disc for preparing spherical powder is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a supersonic annular gap gas atomization spray disc for preparing spherical powder.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a supersonic annular gap aerosol spray disc for preparing spherical powder, comprising a spray disc upper shell, a spray disc lower shell connected to the lower part of the upper shell of the spray disc, two guide rods are fixed in the vertical direction of the lower shell of the spray disc, the lower ends of the two guide rods are fixed with limiting blocks, the upper surfaces of the two guide rods are fixedly connected to the inner wall of the upper shell of the spray disc, the inner wall of the lower shell of the spray disc is threadedly connected with two adjusting screws, the upper ends of the two adjusting screws are inlaid with fixed bearings fixedly connected to the upper shell of the spray disc, the upper surface of the lower shell of the spray disc is fixed with a flow guide, and the upper end of the upper shell of the spray disc is provided with a limiting flow member.

[0007] As a further description of the above technical solution: a limiting groove is opened on the upper surface of the guide member, and the interior of the limiting groove is connected to a limiting ring fixedly connected to the limiting member. Through the limiting groove on the guide member, with the cooperation of the limiting ring, the high-pressure gas can be further guided.

[0008] As a further description of the above technical solution: a fixing plate is arranged on the upper surface of the upper shell of the spray plate, a mounting piece is fixed on the upper surface of the fixing plate, and the plasma torch can be mounted on the mounting piece through the fixing plate.

[0009] As a further description of the above technical solution: fixing bolts threadedly connected to the upper shell of the spray disc are equidistantly installed on the upper end of the fixing plate. By unscrewing the fixing bolts on the fixing plate, the mounting parts can be easily disassembled and maintained.

[0010] As a further description of the above technical solution: the outer wall of the upper shell of the spray disc is connected to two air inlet pipes, one side of the two air inlet pipes is connected to a filter shell, and a pipeline and the air inlet pipe are connected to transport argon or nitrogen into the upper shell of the spray disc as atomizing gas.

[0011] As a further description of the above technical solution: an atomizing nozzle is opened at the lower end of the lower shell of the spray disc, and a filter screen is installed inside the filter shell. The gas enters the upper shell of the spray disc through the filter screen. The filter screen can filter impurities in the gas.

[0012] As a further description of the above technical solution: the lower shell of the spray disc forms a sliding structure with the upper shell of the spray disc through the guide rod, the flow limiting component and the upper shell of the spray disc are an integrated fixed structure, the set guide rod can play a guiding role, and the set limit block prevents the lower shell of the spray disc from moving too much.

[0013] The utility model has the following beneficial effects:

[0014] In the design of the utility model, by twisting the adjusting screw, with the cooperation of the fixed bearing, the adjusting screw can be rotated normally, thereby driving the threadedly connected spray disc lower shell to move vertically, and the gap between the spray disc lower shell and the spray disc upper shell can be adjusted, so as to fine-tune the flow of high-pressure gas through the gap, which is convenient for processing different powders and can be used for processing different types of powders without replacing the spray disc, thereby improving practicality.

[0015] In the design of the utility model, the high-pressure gas can be further guided through the limit groove on the guide member with the cooperation of the limit ring; the mounting member can be easily disassembled and maintained by unscrewing the fixing bolts on the fixing plate; the gas enters the upper shell of the spray disc through the filter mesh plate, and the filter mesh plate provided can filter impurities in the gas; the gas enters the upper shell of the spray disc through the filter mesh plate, and the filter mesh plate provided can filter impurities in the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the upper shell of the spray plate of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the lower shell of the spray plate of the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the filter shell of the utility model.

[0020] Legend:

[0021] 1. Spray disc upper shell; 2. Spray disc lower shell; 3. Guide rod; 4. Limit block; 5. Adjusting screw; 6. Fixed bearing; 7. Flow guide; 8. Flow limiting part; 9. Limiting groove; 10. Limiting ring; 11. Fixed plate; 12. Mounting part; 13. Fixing bolt; 14. Inlet pipe; 15. Filter shell; 16. Atomizing nozzle; 17. Filter screen. DETAILED DESCRIPTION

[0022] Reference Figure 1-Figure 4The utility model provides a supersonic annular gap aerosol spray disc for preparing spherical powders: comprising a spray disc upper shell 1, a spray disc lower shell 2 is connected to the lower part of the spray disc upper shell 1, two guide rods 3 are fixed in the vertical direction of the spray disc lower shell 2, the lower ends of the two guide rods 3 are fixed with limit blocks 4, the upper surfaces of the two guide rods 3 are fixedly connected to the inner wall of the spray disc upper shell 1, the inner wall of the spray disc lower shell 2 is threadedly connected with two adjusting screws 5, and the upper ends of the two adjusting screws 5 are inlaid with fixed bearings 6 fixedly connected to the spray disc upper shell 1 A flow guide 7 is fixed on the upper surface of the lower shell 2 of the spray disc, and a flow limiting member 8 is arranged at the upper end inside the upper shell 1 of the spray disc. By twisting the adjusting screw 5, with the cooperation of the fixed bearing 6, the adjusting screw 5 can be rotated normally, thereby driving the threaded lower shell 2 of the spray disc to move vertically, and the gap between the lower shell 2 of the spray disc and the upper shell 1 of the spray disc can be adjusted, so as to fine-tune the flow rate of the high-pressure gas through the gap, which is convenient for processing different powders and can be used for processing different types of powders without replacing the spray disc, thereby improving practicality.

[0023] As a further implementation scheme of the above technical scheme: a limiting groove 9 is opened on the upper surface of the guide member 7, and the interior of the limiting groove 9 is connected with a limiting ring 10 fixedly connected to the limiting member 8. Through the limiting groove 9 on the guide member 7, with the cooperation of the limiting ring 10, the high-pressure gas can be further guided.

[0024] As a further implementation scheme of the above technical scheme: a fixing plate 11 is provided on the upper surface of the spray plate upper shell 1, and a mounting member 12 is fixed on the upper surface of the fixing plate 11. The plasma torch can be mounted on the mounting member 12 through the setting of the fixing plate 11.

[0025] As a further implementation scheme of the above technical scheme: fixing bolts 13 threadedly connected to the spray disc upper shell 1 are equidistantly installed on the upper end of the fixing plate 11. By unscrewing the fixing bolts 13 on the fixing plate 11, the mounting part 12 can be easily disassembled for convenient maintenance.

[0026] As a further implementation scheme of the above technical scheme: the outer wall of the spray plate upper shell 1 is connected to two air inlet pipes 14, and one side of the two air inlet pipes 14 is connected to a filter shell 15. Pipes and the air inlet pipes 14 are connected to transport argon or nitrogen into the spray plate upper shell 1 as atomizing gas.

[0027] As a further implementation scheme of the above technical scheme: an atomizing nozzle 16 is opened at the lower end of the lower shell 2 of the spray disc, and a filter screen 17 is installed inside the filter shell 15. The gas enters the upper shell 1 of the spray disc through the filter screen 17. The filter screen 17 can filter impurities in the gas.

[0028] In specific implementation, before using the supersonic annular gap gas atomization spray disc for preparing spherical powder, first place the spray disc upper shell 1 in a suitable position, then install the plasma torch on the mounting part 12, and then use the pipeline and the air inlet pipe 14 to connect, and transport argon or nitrogen as atomizing gas into the spray disc upper shell 1. When in use, the material is heated and melted by the plasma torch and enters the spray disc upper shell 1. At the same time, the gas enters the spray disc upper shell 1 through the filter screen plate 17 in the filter shell 15. Since the flow limiting member 8 is inside the flow guide member 7, the high-pressure gas can enter through the gap between the flow limiting member 8 and the flow guide member 7. At this time, the heated and melted material enters the interior of the spray disc upper shell 1. The high-pressure gas atomizes the molten liquid flow or large droplets into small droplets, which are then sprayed out through the atomizing nozzle 16 to complete the processing. By twisting the adjusting screw 5, with the cooperation of the fixed bearing 6, the adjusting screw 5 can be rotated normally, thereby driving the threaded spray plate lower shell 2 to move vertically, and the set guide rod 3 can play a guiding role. The set limit block 4 prevents the spray plate lower shell 2 from moving too much. In this way, the gap between the spray plate lower shell 2 and the spray plate upper shell 1 can be adjusted, so as to fine-tune the flow rate of the high-pressure gas through the gap, which is convenient for processing different powders. Different types of powders can be processed without replacing the spray plate, thereby improving practicality.

[0029] As a further implementation scheme of the above technical scheme: the lower shell 2 of the spray disc forms a sliding structure with the upper shell 1 of the spray disc through the guide rod 3, the flow limiting component 8 and the upper shell 1 of the spray disc are an integrated fixed structure, the set guide rod 3 can play a guiding role, and the set limit block 4 prevents the lower shell 2 of the spray disc from moving too much.

[0030] In specific implementation, the high-pressure gas can be further guided through the limiting groove 9 on the guide member 7 with the cooperation of the limiting ring 10, and the mounting member 12 can be easily disassembled and maintained by unscrewing the fixing bolts 13 on the fixing plate 11.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A supersonic annular gap gas atomization spray disc for preparing spherical powders, comprising a spray disc upper shell (1), wherein the lower portion of the spray disc upper shell (1) is connected to a spray disc lower shell (2), characterized in that: Two guide rods (3) are fixed in the vertical direction inside the lower shell (2) of the spray disc, and the lower ends of the two guide rods (3) are fixed with limit blocks (4). The upper surfaces of the two guide rods (3) are fixedly connected to the inner wall of the upper shell (1) of the spray disc. The inner wall of the lower shell (2) of the spray disc is threadedly connected with two adjusting screws (5), and the upper ends of the two adjusting screws (5) are inlaid with fixed bearings (6) fixedly connected to the upper shell (1) of the spray disc. A flow guide (7) is fixed on the upper surface of the lower shell (2) of the spray disc, and a flow limiting member (8) is arranged at the upper end of the upper shell (1) of the spray disc.

2. A supersonic annular gap gas atomization spray disc for preparing spherical powder according to claim 1, characterized in that: A limiting groove (9) is provided on the upper surface of the flow guide member (7), and a limiting ring (10) fixedly connected to the flow limiting member (8) is connected inside the limiting groove (9).

3. The supersonic annular gap gas atomization spray disc for preparing spherical powder according to claim 1, characterized in that: A fixing plate (11) is provided on the upper surface of the spray plate upper shell (1), and a mounting member (12) is fixed on the upper surface of the fixing plate (11).

4. A supersonic annular gap gas atomization spray disc for preparing spherical powder according to claim 3, characterized in that: Fixing bolts (13) threadedly connected to the spray plate upper shell (1) are equidistantly mounted on the upper end of the fixing plate (11).

5. The supersonic annular gap gas atomization spray disc for preparing spherical powder according to claim 1, characterized in that: The outer wall of the spray plate upper shell (1) is connected to two air inlet pipes (14), and one side of the two air inlet pipes (14) is connected to a filter shell (15).

6. A supersonic annular gap gas atomization spray disc for preparing spherical powder according to claim 5, characterized in that: An atomizing nozzle (16) is provided at the lower end of the spray plate lower shell (2), and a filter screen plate (17) is installed inside the filter shell (15).

7. The supersonic annular gap gas atomization spray disc for preparing spherical powder according to claim 1, characterized in that: The spray disc lower shell (2) forms a sliding structure with the spray disc upper shell (1) through the guide rod (3), and the flow limiting component (8) and the spray disc upper shell (1) form an integrated fixed structure.

Images