A phosphor homogenizing device

Abstract

The utility model relates to the technical field of fluorescent powder homogenization, disclose a kind of fluorescent powder homogenizing device, including processing box, the top of the processing box is fixedly connected with mixing tank, the inside of mixing tank is fixedly connected with mixing mechanism, the top of mixing tank is uniformly fixedly connected with feed pipe, the outer wall of one side of feed pipe is fixedly connected with first air inlet pipe, the side of processing box is fixedly connected with second air inlet pipe, the inside one end of processing box is fixedly connected with dispersion bucket, the outer wall of dispersion bucket is uniformly installed with ultrasonic vibrator, the bottom of dispersion bucket is fixedly connected with second discharge pipe, the bottom of second discharge pipe is fixedly connected with spiral pipe, the one end of second air inlet pipe and spiral pipe are fixedly connected. In the utility model, cutting knife of mixing mechanism is high-speed rotation and is cut into pieces big block agglomerate, and preliminary mixing is completed;Ultrasonic vibrator generates ultrasonic field by high-frequency vibration.

Description

Technical Field

[0001] This utility model relates to the field of phosphor homogenization technology, and in particular to a phosphor homogenization device. Background Technology

[0002] Phosphor homogenizing equipment is a core component in the production and mixing of phosphors for LEDs, displays, and other fields, and is crucial for ensuring phosphor performance. Phosphors are prone to sedimentation and agglomeration due to differences in specific gravity, and bubbles are easily generated during mixing. These issues directly compromise luminescence uniformity. This equipment specifically addresses these problems, ensuring stable phosphor performance and laying a solid foundation for the quality of downstream products.

[0003] Existing phosphor homogenization devices mostly rely on mechanical stirring or ultrasonic dispersion alone, which is insufficient to meet the full-scale dispersion requirements of phosphors, from large agglomerates to tiny particles. Mechanical stirring can only break up large agglomerates and has limited effect on tiny agglomerates. Ultrasonic dispersion alone is prone to uneven initial mixing of materials, resulting in local over-dispersion or under-dispersion of particles, which ultimately affects the luminescence uniformity of the phosphor. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a phosphor homogenizing device, which aims to improve the problems of existing devices that rely on single mechanical stirring or ultrasonic dispersion, making it difficult to completely break up phosphor agglomerates across the entire scale, and that the materials are easily oxidized and the connection between various processing steps is not smooth, resulting in poor homogenization effect and unstable product quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a phosphor homogenizing device, comprising a processing box, a mixing tank fixedly connected to the top of the processing box, a mixing mechanism fixedly connected inside the mixing tank, a feed pipe uniformly fixedly connected to the top of the mixing tank, a first air inlet pipe fixedly connected to one side of the outer wall of the feed pipe, a second air inlet pipe fixedly connected to one side of the processing box, a dispersion tank fixedly connected to one end of the interior of the processing box, ultrasonic vibrators uniformly installed on the outer wall of the dispersion tank, a second discharge pipe fixedly connected to the bottom of the dispersion tank, a spiral tube fixedly connected to the bottom of the second discharge pipe, and one end of the second air inlet pipe fixedly connected to the spiral tube.

[0006] By adopting the above technical solution, the cutting blade of the mixing mechanism rotates at high speed to break up large agglomerates, completing the initial mixing; the ultrasonic vibrator generates an ultrasonic field through high-frequency vibration to destroy small agglomerates and achieve deep dispersion; the high-pressure airflow in the spiral tube forms turbulence, and combined with the spiral path to extend the contact time, further refining the particles. This multi-stage processing method solves the problem that the traditional single homogenization method is difficult to completely disperse agglomerates, resulting in uneven distribution of phosphor particles and affecting the subsequent use effect.

[0007] Preferably, the mixing mechanism includes a motor, the output end of which is fixedly connected to a rotating shaft, and the motor is installed in the middle of the mixing tank.

[0008] Preferably, a rotating rod is fixedly connected to the bottom of the rotating shaft, and a cutting blade is uniformly fixedly connected to the outer wall of the rotating rod.

[0009] Preferably, the bottom of the processing box is uniformly and fixedly connected with support feet, and the other side of the processing box is fixedly connected with a discharge pipe, one end of which is fixedly connected to a spiral tube.

[0010] Preferably, a first discharge pipe is fixedly connected to the bottom of the mixing tank, and a control panel is installed at one end of the processing box.

[0011] Preferably, the bottom of the first feeding pipe is fixedly connected to the dispersion barrel, and a first control valve is installed on one side of the outer wall of the first feeding pipe.

[0012] Preferably, a connecting pipe is fixedly connected to the top of the dispersion tank, and the top of the connecting pipe is fixedly connected to the first discharge pipe.

[0013] Preferably, a second control valve is installed on one side of the outer wall of the second feed pipe.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the cutting blade of the mixing mechanism rotates at high speed to cut up large agglomerates, completing the initial mixing; the ultrasonic vibrator generates an ultrasonic field through high-frequency vibration to destroy small agglomerates and achieve deep dispersion; the high-pressure airflow in the spiral tube forms turbulence, and combined with the spiral path to extend the contact time, further refining the particles. This multi-stage processing method solves the problem that the traditional single homogenization method is difficult to completely disperse agglomerates, resulting in uneven distribution of phosphor particles and affecting the subsequent use effect.

[0015] 2. In this utility model, inert gas is introduced into the feed pipe through the first air inlet pipe. On the one hand, this helps different raw materials to enter the mixing tank smoothly and avoids blockage in the pipe. On the other hand, it can discharge the air in the feed pipe and the mixing tank, preventing the phosphor raw materials from oxidizing when they come into contact with oxygen during the mixing and dispersion process, thus ensuring the purity of the finished product. After the materials are initially mixed, they naturally flow into the dispersion tank. After ultrasonic dispersion, they enter the spiral tube for airflow homogenization. Each step is naturally connected by the equipment structure, without the need for additional manual intervention. This solves the problems of easy oxidation and deterioration of raw materials in the traditional homogenization process, and the frequent manual operation required by the poor connection between the processing steps, which leads to unstable product quality and low production efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a phosphor homogenizing device proposed in this utility model; Figure 2 This is a partial structural diagram of the processing box of a phosphor homogenizing device proposed in this utility model; Figure 3 This is a partial structural diagram of the mixing tank of a phosphor homogenizing device proposed in this utility model; Figure 4 This is a partial structural diagram of the dispersion tank of a phosphor homogenizing device proposed in this utility model.

[0017] Legend: 1. Support leg; 2. Discharge pipe; 3. Processing box; 4. First discharge pipe; 5. Mixing tank; 6. Control panel; 7. First control valve; 8. First air inlet pipe; 9. Feed pipe; 10. Second air inlet pipe; 11. Motor; 12. Rotating shaft; 13. Rotating rod; 14. Cutting knife; 15. Dispersing tank; 16. Second discharge pipe; 17. Connecting pipe; 18. Ultrasonic vibrator; 19. Second control valve; 20. Spiral tube. Detailed Implementation

[0018] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Reference Figure 1 - Figure 4 This utility model provides an embodiment of a phosphor homogenizing device, comprising a processing box 3, a mixing tank 5 fixedly connected to the top of the processing box 3, a mixing mechanism fixedly connected inside the mixing tank 5, a feed pipe 9 uniformly fixedly connected to the top of the mixing tank 5, a first air inlet pipe 8 fixedly connected to one side of the outer wall of the feed pipe 9, a second air inlet pipe 10 fixedly connected to one side of the processing box 3, a dispersion tank 15 fixedly connected to one end inside the processing box 3, an ultrasonic vibrator 18 uniformly installed on the outer wall of the dispersion tank 15, a second discharge pipe 16 fixedly connected to the bottom of the dispersion tank 15, a spiral tube 20 fixedly connected to the bottom of the second discharge pipe 16, and one end of the second air inlet pipe 10 fixedly connected to the spiral tube 20. This invention solves the problems of existing devices relying on single mechanical stirring or ultrasonic dispersion, which makes it difficult to completely break up phosphor agglomerates of all sizes, and the materials are easily oxidized, and the connection between various processing links is not smooth, resulting in poor homogenization effect and unstable product quality.

[0020] Specifically, the processing box 3 is the core working space of the device, housing components such as the mixing tank 5 and the dispersion tank 15, providing a closed environment; the mixing tank 5 is used for the initial mixing of phosphor raw materials, laying the foundation for subsequent homogenization; the mixing mechanism breaks up raw material agglomerates through mechanical action, achieving initial dispersion; multiple feed pipes 9 can respectively introduce raw materials of different components, achieving simultaneous feeding of multiple components; the first air inlet pipe 8 introduces an inert gas, such as nitrogen, into the feed pipe 9, on the one hand to assist in the transport of raw materials and avoid blockage of raw materials in the pipe, and on the other hand to expel air from the pipe and prevent oxidation of raw materials; the second air inlet pipe 10 introduces... High-pressure airflow is introduced into the dispersion tank 15, which generates turbulence when mixing with the material, enhancing the homogenization effect. The dispersion tank 15 is used to further disperse the initially mixed material. The ultrasonic vibrator 18 on the outer wall generates an ultrasonic field through high-frequency vibration, which breaks up material agglomerates and makes the particles evenly dispersed. The second feed pipe 16 is the channel for the material to enter the spiral tube 20 from the dispersion tank 15. The connecting pipe 17 is used to balance the air pressure inside the dispersion tank 15 to avoid negative pressure inside the tank due to feeding. The spiral tube 20 extends the contact path between the material and the airflow through the spiral structure, and at the same time uses the shear force of the airflow to further refine the particles and improve the homogenization.

[0021] Reference Figure 2 - Figure 4 The mixing mechanism includes a motor 11, the output end of which is fixedly connected to a rotating shaft 12. The motor 11 is installed in the middle of the mixing tank 5. A rotating rod 13 is fixedly connected to the bottom of the rotating shaft 12. Cutting blades 14 are evenly fixedly connected to the outer wall of the rotating rod 13. Support feet 1 are evenly fixedly connected to the bottom of the processing box 3. A discharge pipe 2 is fixedly connected to the other side of the processing box 3. One end of the discharge pipe 2 is fixedly connected to the spiral tube 20.

[0022] Specifically, in the mixing mechanism, the motor 11 drives the rotating shaft 12 to rotate the rotating rod 13 at high speed, and the rotating rod 13 drives the cutting blade 14 on the outer wall to rotate synchronously. The cutting blade 14 uses sharp metal blades, which are distributed in a spiral shape. When rotating, it powerfully cuts and stirs the raw materials in the mixing tank 5. It can not only break up large agglomerates, but also quickly mix different components of raw materials evenly to complete the initial homogenization. The support foot 1 raises the processing box 3 to prevent the bottom from getting damp, and at the same time facilitates operation and maintenance. The discharge pipe 2 is used to discharge the final homogenized fluorescent powder material. A valve can be installed on its outer wall to control the discharge speed and facilitate subsequent collection or transportation.

[0023] Reference Figure 1 , Figure 3 , Figure 4The bottom of the mixing tank 5 is fixedly connected to the first discharge pipe 4. The processing box 3 is equipped with a control panel 6 at one end. The bottom of the first discharge pipe 4 is fixedly connected to the dispersion tank 15. A first control valve 7 is installed on one side of the outer wall of the first discharge pipe 4. A connecting pipe 17 is fixedly connected to the top of the dispersion tank 15. The top of the connecting pipe 17 is fixedly connected to the first discharge pipe 4. A second control valve 19 is installed on one side of the outer wall of the second discharge pipe 16.

[0024] Specifically, the first discharge pipe 4 provides a downward conveying channel for the preliminarily mixed material in the mixing tank 5, and is directly connected to the dispersion tank 15; the first control valve 7 can control the opening and closing of the first discharge pipe 4 and the discharge speed, so as to facilitate the adjustment of the material conveying timing according to the mixing progress and avoid insufficiently mixed material from entering the dispersion tank 15; the control panel 6 integrates start / stop buttons, motor 11 speed adjustment, ultrasonic power setting, airflow pressure control and other functions. The connection point between the connecting pipe 17 and the first discharge pipe 4 is located below the first control valve 7 to ensure air pressure balance between the dispersion tank 15 and the first discharge pipe 4; the second control valve 19 is used to control the opening and closing of the second discharge pipe 16. After the material discharged into the dispersion tank 15 has completed ultrasonic dispersion, the valve is opened to allow the material to enter the spiral tube 20, ensuring that each step of the homogenization process is carried out in an orderly manner.

[0025] Working Principle: Before homogenization begins, the device operating parameters are set via the control panel 6. Then, raw materials of different components, such as fluorescent powder, dispersant, and solvent, are poured into their respective feed pipes 9, ensuring each feed pipe 9 is unobstructed. Next, the valve of the first air inlet pipe 8 is opened to introduce inert gas to assist in raw material transport and expel air from the pipes to prevent oxidation. Simultaneously, the motor 11 of the mixing mechanism is started. The motor 11 drives the rotating rod 13 and the cutting blade 14 on the outer wall to rotate at high speed via the rotating shaft 12. The raw materials enter the mixing tank 5 with the assistance of the airflow, where they are forcefully cut and stirred by the rotating cutting blade 14. Large agglomerates are broken up, and different components are quickly and evenly mixed. After initial mixing, the first control valve 7 is opened, and the material in the mixing tank 5 flows into the dispersion tank 15 through the first discharge pipe 4. Once the material reaches the preset liquid level in the dispersion tank 15, the first control valve 7 is closed, and the ultrasonic vibrator 18 is started. The high-frequency vibration generated by the vibrator forms an ultrasonic field within the dispersion tank 15, dissolving the tiny agglomerates in the material. The particles are thoroughly dispersed under the ultrasonic cavitation effect and vibration impact, and are uniformly dispersed in the solvent. After deep dispersion, the valves of the second control valve 19 and the second air inlet pipe 10 are opened. The material in the dispersion tank 15 flows into the spiral tube 20 through the second feed pipe 16. At the same time, the second air inlet pipe 10 introduces high-pressure airflow. The airflow forms turbulence in the spiral tube 20 and mixes thoroughly with the material. This not only uses the shear force of the airflow to further refine the particles, but also extends the homogenization time through the spiral path to ensure that the homogenization of the material meets the standard. Finally, the homogenized phosphor material is discharged through the discharge pipe 2 with the airflow and collected in a special container. After the discharge is completed, all equipment power is turned off. During cleaning, the first control valve 7 and the second control valve 19 must be opened at the same time so that the cleaning solvent flows sequentially through the mixing tank 5, the first feed pipe 4, the dispersion tank 15, the second feed pipe 16 and the spiral tube 20, and is finally discharged from the discharge pipe 2 to avoid residual material affecting the next use. After cleaning, the wastewater is discharged and the device is restored to its initial state, waiting for the next homogenization operation.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A phosphor homogenizing device, comprising a processing chamber (3), characterized in that: The top of the processing box (3) is fixedly connected to a mixing tank (5), the inside of the mixing tank (5) is fixedly connected to a mixing mechanism, the top of the mixing tank (5) is uniformly fixedly connected to a feed pipe (9), the outer wall of one side of the feed pipe (9) is fixedly connected to a first air inlet pipe (8), the side of the processing box (3) is fixedly connected to a second air inlet pipe (10), the inside of the processing box (3) is fixedly connected to a dispersion barrel (15), the outer wall of the dispersion barrel (15) is uniformly installed with an ultrasonic vibrator (18), the bottom of the dispersion barrel (15) is fixedly connected to a second discharge pipe (16), the bottom of the second discharge pipe (16) is fixedly connected to a spiral pipe (20), and one end of the second air inlet pipe (10) is fixedly connected to the spiral pipe (20).

2. The phosphor homogenizing device according to claim 1, characterized in that: The mixing mechanism includes a motor (11), the output end of which is fixedly connected to a rotating shaft (12), and the motor (11) is installed in the middle of the mixing tank (5).

3. The phosphor homogenizing device according to claim 2, characterized in that: A rotating rod (13) is fixedly connected to the bottom of the rotating shaft (12), and a cutting blade (14) is evenly fixedly connected to the outer wall of the rotating rod (13).

4. The phosphor homogenizing device according to claim 1, characterized in that: The bottom of the processing box (3) is uniformly and fixedly connected with support feet (1), and the other side of the processing box (3) is fixedly connected with a discharge pipe (2). One end of the discharge pipe (2) is fixedly connected to the spiral pipe (20).

5. The phosphor homogenizing device according to claim 1, characterized in that: The bottom of the mixing tank (5) is fixedly connected to the first discharge pipe (4), and a control panel (6) is installed at one end of the processing box (3).

6. The phosphor homogenizing device according to claim 5, characterized in that: The bottom of the first feeding pipe (4) is fixedly connected to the dispersion barrel (15), and a first control valve (7) is installed on one side of the outer wall of the first feeding pipe (4).

7. The phosphor homogenizing device according to claim 1, characterized in that: The top of the dispersion barrel (15) is fixedly connected to a connecting pipe (17), and the top of the connecting pipe (17) is fixedly connected to the first discharge pipe (4).

8. The phosphor homogenizing device according to claim 1, characterized in that: A second control valve (19) is installed on one side of the outer wall of the second feed pipe (16).

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