Powder feeding nozzle with powder mixing function
By incorporating a double cone and a dispersion cone structure within the powder feeding nozzle, the environmental pollution and health hazards caused by the mixing machine in the production of silicon-aluminum targets are resolved. This achieves uniform mixing of silicon powder and aluminum powder, simplifies the production process, and reduces costs.
Patent Information
- Application Number
- CN202423166337.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing technologies require the use of mixing machines to mix materials when producing silicon-aluminum sputtering targets, which leads to environmental pollution and health hazards, while also increasing costs and space requirements.
A powder feeding nozzle with a powder mixing function was designed. By setting a double cone and a dispersion cone structure inside the powder feeding nozzle, silicon powder and aluminum powder can be mixed inside the powder feeding nozzle, eliminating the need for a mixing machine.
This method achieves uniform mixing of silicon powder and aluminum powder, avoiding environmental pollution and health hazards, simplifying the production process, and reducing costs.
Smart Images
Figure CN223548069U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of target material production technology, and in particular to a powder feeding nozzle with a powder mixing function. Background Technology
[0002] Plasma spraying is a common process for producing target materials. It involves heating powder to a molten or semi-molten state, then impacting and depositing it onto a backing tube at a certain speed to form a coating of a certain thickness. Silicon-aluminum targets, niobium oxide targets, and titanium oxide targets are generally produced using plasma spraying. In the production of silicon-aluminum targets, silicon accounts for 90% by weight and aluminum accounts for 10% by weight. First, silicon powder and aluminum powder are mixed in a mixer according to their weight ratio to form a silicon-aluminum mixed powder. Then, the mixed powder is fed into a powder feeder (the feeder's speed is adjustable). The powder feeder is connected to a powder nozzle via a flexible feed pipe. The silicon-aluminum mixed powder is sprayed from the feed pipe onto the flame of a plasma spray gun for spraying. However, the mixer requires investment and occupies space. Furthermore, powder is scattered during the feeding and discharging processes, polluting the environment and posing health risks. Therefore, this application provides a powder feeder with a mixing function, allowing silicon and aluminum powder to be mixed within the feeder, thus eliminating the need for a mixer. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a powder feeding nozzle with a powder mixing function, which addresses the above-mentioned technical deficiencies.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a powder feeding nozzle with a powder mixing function, including a discharge pipe and an upper shell. A double cone is provided inside the upper shell. The double cone includes two cones with overlapping bottom surfaces. The first feed pipe and the second feed pipe are respectively inserted into the upper shell from both sides and are respectively aligned with the two cones on the double cone. A conveying pipe is provided at the bottom of the upper shell. The lower end of the conveying pipe is connected to a lower shell. A dispersing cone is provided inside the lower shell. The outer diameter of the dispersing cone is larger than the inner diameter of the conveying pipe and smaller than the inner diameter of the lower shell. A contraction section is provided at the bottom of the lower shell. The diameter of the contraction section gradually decreases from top to bottom. The discharge pipe is located at the bottom of the contraction section.
[0005] To further optimize this technical solution, the upper shell is a hollow sphere.
[0006] To further optimize this technical solution, the opening of the first feed tube is 0.5-1 mm away from the surface of the cone on one side of the double cone, and the opening of the second feed tube is 0.5-1 mm away from the surface of the cone on the other side of the double cone.
[0007] To further optimize this technical solution, the powder feeding nozzle is made of stainless steel.
[0008] Compared with the prior art, the present invention has the following advantages: a double cone is provided inside the upper shell, and the first feed pipe and the second feed pipe are respectively inserted into the upper shell from both sides and aligned with the two cones on the double cone. The bottom of the upper shell is connected to the lower shell through a conveying pipe. A dispersing cone is provided inside the lower shell, and a contraction part is provided at the bottom of the lower shell. A discharge pipe is provided at the bottom of the contraction part. Two different powders can be mixed after entering the powder feeding nozzle through the first feed pipe and the second feed pipe, thereby eliminating the need for a mixing machine. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of a powder feeding nozzle with a powder mixing function.
[0010] Figure 2 This is a cross-sectional view of a powder feeding nozzle with a powder mixing function.
[0011] Figure 3 for Figure 2 A magnified view of point I in the middle.
[0012] In the diagram: 1. First feed pipe; 2. Upper shell; 3. Second feed pipe; 4. Conveying pipe; 5. Lower shell; 51. Contraction section; 6. Discharge pipe; 7. Dispersion cone; 8. Double cone. Detailed Implementation
[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0014] Detailed implementation method: combined with Figure 1-3As shown, a powder feeding nozzle with a powder mixing function includes a discharge pipe 6 and an upper housing 2. A double cone 8 is disposed inside the upper housing 2. The double cone 8 is fixed inside the upper housing 2 by several connecting plates, and there is a large gap between it and the inner wall of the upper housing 2. The double cone 8 includes two cones with overlapping bottom surfaces. A first feed pipe 1 and a second feed pipe 3 respectively enter the upper housing 2 from the left and right sides and are aligned with the two cones on the double cone 8. The diameter of the bottom surface of the double cone 8 is larger than the diameter of the first feed pipe 1 and the second feed pipe 3. The feed pipe 3 is coaxial with the double cone 8. The bottom of the upper shell 2 is provided with a conveying pipe 4. The lower end of the conveying pipe 4 is connected to the lower shell 5. The lower shell 5 is provided with a dispersing cone 7. The dispersing cone 7 is fixed in the lower shell 5 by several connecting plates. The dispersing cone 7 is coaxial with the conveying pipe 4 and its apex faces upward. The outer diameter of the dispersing cone 7 is larger than the inner diameter of the conveying pipe 4 and smaller than the inner diameter of the lower shell 5. The lower part of the lower shell 5 is provided with a contraction section 51. The diameter of the contraction section 51 gradually decreases from top to bottom. The discharge pipe 6 is located at the bottom of the contraction section 51. In use, two powder feeders are required (currently, it is common for a plasma spraying equipment to be equipped with two powder feeders to increase the powder feeding capacity). One powder feeder contains silicon powder and is connected to the first feed pipe 1 via a powder feeding pipe. The other powder feeder contains aluminum powder and is connected to the second feed pipe 3 via another powder feeding pipe. The powder feeders use airflow to transport the powder, causing the powder to advance along the powder feeding pipe with the airflow. The powder feeding speed of the two powder feeders is adjusted to ensure that the silicon-to-aluminum weight ratio meets the requirements. The first feed pipe... Most of the powder ejected from the first and second feed pipes 3 flies outward along the conical surfaces of the two cones on the double cone 8, where it impacts and mixes, and then falls into the upper shell 2 for further mixing before falling down. After that, it falls onto the dispersion cone 7 through the conveying pipe 4, then falls down along the dispersion cone 7 into the contraction section 51, and then slides down along the contraction section 51 into the discharge pipe 6. During this process, further mixing occurs, and finally, it falls from the discharge pipe 6 onto the flame of the plasma spray gun for spraying, thus eliminating the need for a mixing machine to perform the mixing step.
[0015] Furthermore, the upper shell 2 is a hollow sphere, and the double cone 8 is located in the center inside the upper shell 2, with the axis of the double cone 8 parallel to the horizontal plane.
[0016] Furthermore, the opening of the first feed pipe 1 is 0.5-1 mm away from the surface of the cone on one side of the double cone 8, and the opening of the second feed pipe 3 is 0.5-1 mm away from the surface of the cone on the other side of the double cone 8. The powder sprayed from the two feed pipes will be sprayed out with a thinner thickness, thus mixing more evenly.
[0017] Furthermore, the powder feeding nozzle is made of stainless steel, which meets the strength requirements and is not easily rusted.
[0018] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A powder feeding nozzle with a powder mixing function, comprising a discharge pipe (6), characterized in that: It also includes an upper shell (2), in which a double cone (8) is provided. The double cone (8) includes two cones with overlapping bottom surfaces. The first feed pipe (1) and the second feed pipe (3) are respectively inserted into the upper shell (2) from both sides and are respectively aligned with the two cones on the double cone (8). A conveying pipe (4) is provided at the bottom of the upper shell (2). The lower end of the conveying pipe (4) is connected to a lower shell (5). A dispersing cone (7) is provided in the lower shell (5). The outer diameter of the dispersing cone (7) is larger than the inner diameter of the conveying pipe (4) and smaller than the inner diameter of the lower shell (5). A contraction section (51) is provided at the bottom of the lower shell (5). The diameter of the contraction section (51) gradually decreases from top to bottom. The discharge pipe (6) is provided at the bottom of the contraction section (51).
2. The powder feeding nozzle with powder mixing function according to claim 1, characterized in that: The upper shell (2) is a hollow sphere.
3. A powder feeding nozzle with a powder mixing function according to claim 1, characterized in that: The opening of the first feed pipe (1) is 0.5-1 mm away from the surface of the cone on one side of the double cone (8), and the opening of the second feed pipe (3) is 0.5-1 mm away from the surface of the cone on the other side of the double cone (8).
4. A powder feeding nozzle with a powder mixing function according to any one of claims 1-3, characterized in that: The powder feeding nozzle is made of stainless steel.