An atomizing rotary disc
By setting a central protrusion at the center of rotation of the atomizing disk, the problem of liquid tin accumulating at the center of rotation is solved, resulting in faster atomization speed and more uniform powder generation, thus improving atomization effect and cooling efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN JINDINGYUAN CEMENTED CARBIDE CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-24
AI Technical Summary
Liquid tin accumulates at the center of rotation of the atomizing disk, which slows down the centrifugal atomization speed and affects the atomization effect.
A central protrusion is set at the center of the atomizing disc to push away the liquid medium falling to the center of rotation, causing it to move outward rapidly under the action of centrifugal force, thus achieving more effective atomization.
It improves the atomization effect of liquid media, avoids the retention of liquid media in the center of rotation, enhances atomization speed and uniformity, and improves the cooling effect of powder.
Smart Images
Figure CN224543134U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of atomizing components, and more particularly to an atomizing disc. Background Technology
[0002] In industrial production, atomization is involved in many fields. The liquefied medium impacts a high-speed rotating disk, causing the liquefied medium to break into tiny droplets and rapidly cool to form powder.
[0003] The key structure involved is the rotary atomizer. A basic rotary atomizer structure includes an atomizing disc and a drive rod. A motor connects to the drive rod, which drives the atomizing disc to rotate at high speed. During rotation, a liquefied medium is injected into the atomizing disc. The high-speed rotation of the disc causes the droplets to break down rapidly into smaller particles, atomizing them into very small liquid particles. These atomized particles then cool and solidify into powder under high-speed centrifugal motion. Tin powder, commonly used in the semiconductor industry, involves an atomization process of liquid tin, with the atomizing disc being a crucial component in this step.
[0004] However, in some cases, when liquid tin is injected into the atomizing disk, a small portion of the liquid tin flies to the center of rotation of the atomizing disk. The rotation speed of the center of rotation is greatly reduced, and the centrifugal force received by the liquid tin is small. This can easily cause a small amount of liquid tin to linger in the center of rotation of the atomizing disk. As a result, the centrifugal atomization speed of the liquid tin is slowed down, the atomization effect is reduced, and it may even solidify in the center of rotation. Utility Model Content
[0005] In order to solve the technical problem that liquid tin accumulates at the center of rotation of the atomizing disc in the existing atomizing disc, thus slowing down the centrifugal atomization of the stagnant liquid tin, one of the objectives of this utility model is to provide an atomizing disc.
[0006] One of the objectives of this utility model is achieved through the following technical solution:
[0007] An atomizing disc, the atomizing disc comprising a drive rod, an atomizing disk, and a central protrusion;
[0008] The front of the atomizing disc is the atomizing surface, and the back of the atomizing disc is the driving surface;
[0009] One end of the drive rod is connected to the drive surface and the other end is connected to an external drive device, which is used to drive the atomizing disc to rotate.
[0010] The central protrusion is located at the center of rotation of the atomizing surface and is used to push away the liquid medium falling to the center of rotation.
[0011] Optionally, the atomizing surface is recessed into an atomizing groove, and the central protrusion is located at the bottom of the atomizing groove.
[0012] Optionally, the atomizing surface includes a plane and an arc surface, the plane being located at the bottom of the atomizing disk, and the arc surface surrounding the plane;
[0013] The central protrusion is located on the plane.
[0014] Optionally, the central protrusion is conical.
[0015] Optionally, the apex angle of the central protrusion is 45 degrees to 120 degrees.
[0016] Optionally, the central protrusion is cylindrical, and the height of the central protrusion is greater than the injection position of the liquid medium.
[0017] Optionally, the drive rod includes a drive section and a connecting section connected to the drive section. The connecting section is connected to the atomizing disc, and the radius of the connecting section is larger than the radius of the drive section. The connecting section is connected to an external drive device.
[0018] Optionally, the atomizing disc is made of hard alloy.
[0019] Optionally, the atomizing disc is made of tungsten carbide cemented carbide steel.
[0020] Optionally, the drive rod is made of alloy tool steel.
[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0022] After the central protrusion is set, it occupies the central position of the rotation center. When the liquid medium is injected into the atomizing disc, some of the randomly flying liquid medium drips onto the side of the central protrusion. The liquid medium located on the side of the central protrusion, at a short distance from the rotation center, experiences a greater linear velocity than when it falls onto the center. This results in a greater centrifugal force, causing the liquid medium to rapidly move outwards and diffuse into the high-speed centrifugal region, thus achieving more effective atomization. This results in the liquid medium dripping onto the rotation center having a good atomization effect. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the structure of the atomizing disc of this utility model;
[0024] Figure 2 This is a cross-sectional view of the atomizing disc of this utility model.
[0025] Explanation of reference numerals in the attached diagram:
[0026] 1. Drive rod; 11. Drive section; 12. Connecting section;
[0027] 2. Atomizing disc; 21. Atomizing groove; 211. Flat surface; 212. Arc surface;
[0028] 3. Central protrusion. Detailed Implementation
[0029] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0031] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.
[0032] like Figure 1 , Figure 2 The diagram shows an atomizing disc for atomizing liquid media, such as liquid tin. The atomizing disc includes a drive rod 1, an atomizing disk 2, and a central protrusion 3. Specifically, the front of the atomizing disk 2 is the atomizing surface, and the back of the atomizing disk 2 is the drive surface. One end of the drive rod 1 is connected to the drive surface, and the other end is connected to an external drive device to drive the atomizing disk 2 to rotate. The central protrusion 3 is located at the center of rotation of the atomizing surface to push away the liquid media falling to the center of rotation. When the atomizing disc is working, the external drive device is connected to the drive rod 1, specifically a high-speed motor. Thus, the external device drives the drive rod 1 to rotate at high speed. The liquid media is injected into the atomizing surface. When the liquid media touches the atomizing surface, it is broken into numerous fine liquid particles by the friction of the atomizing surface, thus atomizing the liquid media. Under the friction of the atomizing disk 2, the fine liquid particles cool and solidify into powder during the high-speed centrifugal process.
[0033] Meanwhile, some liquid medium is injected into or near the center of rotation. The closer to the center of rotation, the lower the linear velocity of the atomizing disk 2, and the smaller the atomization effect of the atomizing surface. When the linear velocity of the atomizing surface is insufficient, the atomization effect of the liquid medium will also be poor, resulting in low-speed centrifugal atomization. Specifically, this manifests as slow atomization speed, large liquid droplet diameter, insufficient atomization uniformity, and long atomization time, leading to a decrease in atomization temperature, further affecting the atomization effect. It may even lead to prolonged residence and direct solidification at the center of rotation. After setting the central protrusion 3, the central protrusion 3 occupies the central position of the center of rotation. After the liquid medium is injected into the atomizing disk 2, some of the randomly flying liquid medium drips onto the side of the central protrusion 3. The liquid medium located on the side of the central protrusion 3 is a short distance from the center of rotation. Compared to falling on the center of rotation, the liquid medium falling on the side of the central protrusion 3 has a greater linear velocity and is subjected to a greater centrifugal force. Under the action of centrifugal force, the liquid medium moves outward and diffuses rapidly, moving to the area of high-speed centrifugation, thereby achieving more effective atomization. This results in the liquid medium dripping to the center of rotation having a good atomization effect.
[0034] In some embodiments of the atomizing surface, as shown in the figure Figure 2 As shown, the atomizing surface is concave, forming an atomizing groove 21, with a central protrusion 3 located at the bottom of the atomizing groove 21. The concave atomizing surface, forming the atomizing groove 21, allows the liquid medium to be supported, preventing or reducing large liquid particles from leaving the atomizing surface and improving the overall atomization effect.
[0035] Specifically, the atomizing surface includes a flat surface 211 and an arc surface 212. The flat surface 211 is located at the bottom of the atomizing disk 2, and the arc surface 212 surrounds the flat surface 211. The central protrusion 3 is located on the flat surface 211. The liquid medium is first injected onto the flat surface 211 for initial pulverization, and then centrifuged onto the arc surface 212 for secondary pulverization. This ensures the liquid medium is thoroughly pulverized and refined, resulting in more uniform pulverization and improved cooling atomization effect.
[0036] In some embodiments of the shape of the central protrusion 3, as shown in the figure Figure 2 As shown, the central protrusion 3 is conical. When the liquid medium falls into the lower part of the conical central protrusion 3, the radius of the lower part is larger than that of the top, and it is a short distance from the center of rotation. This allows the liquid medium to be quickly thrown to the position of the original center of rotation, thus continuing high-speed centrifugal atomization. When the liquid medium falls into the top of the conical central protrusion 3, it is guided by the conical surface of the central protrusion 3 and flows along the side of the central protrusion 3 towards the lower part, where it is thrown to a position away from the center of rotation.
[0037] Regarding the specific dimensions of the central protrusion 3, the apex angle α of the central protrusion 3 is between 45 degrees and 120 degrees. The diameter of the atomizing disk 2 is R, and the bottom diameter of the central protrusion 3 is r, then 0.2R ≥ r ≥ 0.02R.
[0038] Alternatively, the central protrusion 3 can also be cylindrical, with its height greater than the injection point of the liquid medium. The sides of the central protrusion 3 can increase the distance between the liquid medium and the center of rotation, thereby preventing the liquid medium from falling into the center of rotation. At the same time, the height of the central protrusion 3 being greater than the injection point of the liquid medium prevents the liquid medium from falling onto the top of the central protrusion 3, thus avoiding low-speed centrifugation.
[0039] Specifically, the drive rod 1 includes a drive section 11 and a connecting section 12 connected to the drive section 11. The connecting section 12 is connected to the atomizing disc 2, and its radius is larger than that of the drive section 11. The connecting section 12 is also connected to an external drive device. The increased size of the connecting section 12 increases the connection area with the atomizing disc 2 and creates a step between the drive section 11 and the connecting section 12, thus forming an assembly limit and serving an assembly limiting function.
[0040] The atomizing disc 2 is made of cemented carbide, preferably tungsten carbide cemented carbide steel. The drive rod 1 is made of alloy tool steel.
[0041] Cr is preferred for alloy tool steel 12 Cr is an option. 12 MoV, Cr 12 Mo1V1, etc., tungsten carbide cemented carbide steel is preferably YG11, and YG8, YG15, etc. are also optional. The specific material can be freely selected according to the actual production needs. The working speed of the drive rod 1 is 60,000-120,000 rpm. Alloy tool steel has good toughness and is not easy to break at high speed. Tungsten carbide cemented carbide has higher hardness and wear resistance. Therefore, using alloy tool steel as the drive column, the atomizing disc is not easy to break due to high-speed rotation and has stronger toughness. The atomizing disc 2 is wear-resistant, which greatly improves the service life.
[0042] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. An atomizing disc, characterized in that, The atomizing disc includes a drive rod, an atomizing disk, and a central protrusion; The front of the atomizing disc is the atomizing surface, and the back of the atomizing disc is the driving surface; One end of the drive rod is connected to the drive surface and the other end is connected to an external drive device, which is used to drive the atomizing disc to rotate. The central protrusion is located at the center of rotation of the atomizing surface and is used to push away the liquid medium falling to the center of rotation.
2. The atomizing disc as described in claim 1, characterized in that, The atomizing surface is concave to form an atomizing groove, and the central protrusion is located at the bottom of the atomizing groove.
3. The atomizing disc as described in claim 2, characterized in that, The atomizing surface includes a flat surface and an arc surface, the flat surface being located at the bottom of the atomizing disk, and the arc surface surrounding the flat surface; The central protrusion is located on the plane.
4. The atomizing disc as described in any one of claims 1 to 3, characterized in that, The central protrusion is conical.
5. The atomizing disc as described in claim 4, characterized in that, The apex angle of the central protrusion is between 45 degrees and 120 degrees.
6. The atomizing disc as described in claim 1, characterized in that, The central protrusion is cylindrical, and its height is greater than the injection point of the liquid medium.
7. The atomizing disc as described in claim 1, characterized in that, The drive rod includes a drive section and a connecting section connected to the drive section. The connecting section is connected to the atomizing disc, and the radius of the connecting section is larger than the radius of the drive section. The connecting section is connected to an external drive device.
8. The atomizing disc as described in claim 1, characterized in that, The atomizing disc is made of cemented carbide.
9. The atomizing disc as described in claim 8, characterized in that, The atomizing disc is made of tungsten carbide hard alloy steel.
10. The atomizing disc as described in claim 1, characterized in that, The drive rod is made of alloy tool steel.