Device for testing thermal stability of fluorescent powder

Abstract

The utility model provides a fluorescent powder thermal stability testing device which comprises a working table, a testing room is arranged on the working table, a partition plate and a fluorescent powder coating assembly are arranged in the testing room, a heating assembly and a moving assembly are arranged on the two sides of the partition plate respectively, a rotating assembly is arranged on the moving assembly, and the fluorescent powder coating assembly is arranged on the rotating assembly. The rotating assembly is located below the fluorescent powder coating assembly, a detection device is arranged in the middle of the workbench, and the detection device is located below the rotating assembly. According to the fluorescent powder thermal stability testing device provided by the utility model, the partition plate, the shielding door and the telescopic rod are combined to physically isolate a heating area from a mobile operation area, so that a temperature rise room and a space for detection on the other side are isolated, and the influence of a heating process on a mobile assembly and a detection device is avoided; and meanwhile, the moving assembly is matched with the rotating assembly, so that batch bearing and automatic circulating detection of multi-station samples are realized, and the detection efficiency is improved.

Description

Technical Field

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

[0002] Thermal stability testing of phosphors is one of the important testing items for phosphors. As the temperature rises, the quantum efficiency of phosphors will decrease, resulting in reduced light emission. The thermal stability of phosphors will affect the performance and lifespan of products.

[0003] Existing testing equipment has certain shortcomings: it lacks an effective spatial isolation design, which causes heat to easily spread to other operating areas during the heating process, interfering with the accuracy of the testing device and causing deviations in the test data; early testing methods were mostly single-station testing, which was inefficient.

[0004] Therefore, it is necessary to provide a phosphor thermal stability testing device to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a phosphor thermal stability testing device, which solves the problems of existing testing devices lacking effective spatial isolation design, easily interfering with the accuracy of the testing device during heating, causing deviations in the test data, and low single-station testing efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides a phosphor thermal stability testing device, comprising: a workbench, a testing chamber provided on the workbench, a partition plate and a phosphor coating assembly provided in the testing chamber, a heating assembly and a moving assembly respectively provided on both sides of the partition plate, a rotating assembly provided on the moving assembly, the rotating assembly being located below the phosphor coating assembly, and a detection device provided in the middle of the workbench, the detection device being located below the rotating assembly.

[0007] Preferably, a shielding door is rotatably connected to the partition plate, the height of the shielding door corresponds to the rotating assembly, and a telescopic rod is rotatably connected to the partition plate. Two sets of telescopic rods are provided and rotatably connected to both sides of the shielding door. The heating assembly includes a heater, and a heating chamber is provided above the heater. The position of the heating chamber corresponds to the shielding door and the rotating assembly.

[0008] Preferably, the moving component includes a first drive motor, a displacement screw, a sliding rod, and a moving block. The displacement screw is connected to the output end of the first drive motor, the moving block is fixedly connected to the rotating component, the moving block is sleeved on the displacement screw and the sliding rod, the moving block is threadedly connected to the displacement screw, and the moving block is slidably connected to the sliding rod.

[0009] Preferably, the rotating assembly includes a base, a turntable is rotatably connected to the base, a second drive motor is provided on the base, the turntable is connected to the output end of the second drive motor, and multiple sets of evenly distributed extension plates are fixedly connected to the outer side of the turntable. A through detection port is opened on the extension plate, and a light-transmitting plate is provided inside the detection port.

[0010] Preferably, the phosphor coating assembly includes a mounting plate, a material input pipe is provided on the mounting plate, a phosphor nozzle is provided below the material input pipe, a lifting push rod is fixedly connected to the lower part of the mounting plate, and a coating brush is fixedly connected to the end of the lifting push rod.

[0011] Preferably, the detection device includes a testing device body and a photometer, the upper part of the testing device body is provided with a light-emitting part, the photometer is located in the upper part of the testing chamber, and the position of the photometer corresponds to the light-emitting part.

[0012] Compared with related technologies, the phosphor thermal stability testing device provided by this utility model has the following advantages:

[0013] This utility model provides a phosphor thermal stability testing device. The combination of a partition plate, a shielding door, and a telescopic rod physically isolates the heating area from the moving operation area, thus isolating the heating chamber from the space on the other side used for testing. This avoids the impact of the heating process on the moving components and the testing device. At the same time, the moving components and the rotating components work together to realize the batch carrying and automatic cyclic testing of multi-station samples, thereby improving the testing efficiency. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of a phosphor thermal stability testing device provided by this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the testing chamber in this utility model;

[0016] Figure 3 This is a schematic diagram of the coating component in this utility model;

[0017] Figure 4 This is a schematic diagram of the moving component and the rotating component in this utility model.

[0018] Numbered in the diagram: 1. Workbench, 2. Testing chamber, 3. Partition plate, 4. Heating assembly, 41. Heater, 42. Heating chamber, 5. Shielding door, 6. Telescopic rod, 7. Moving assembly, 71. First drive motor, 72. Displacement screw, 73. Sliding rod, 74. Moving block, 8. Rotating assembly, 81. Base, 82. Turntable, 83. Second drive motor, 84. Extension plate, 85. Detection port, 86. Light-transmitting plate, 9. Phosphor coating assembly, 91. Mounting plate, 92. Material input pipe, 93. Phosphor nozzle, 94. Lifting push rod, 95. Coating brush, 10. Detection device, 101. Main body of testing device, 102. Light-emitting part, 103. Photometric end. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic diagram of a preferred embodiment of a phosphor thermal stability testing device provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the testing chamber in this utility model;

[0022] Figure 3 This is a schematic diagram of the coating component in this utility model;

[0023] Figure 4 This is a schematic diagram of the moving component and the rotating component in this utility model.

[0024] A phosphor thermal stability testing device includes: a workbench 1, a test chamber 2 on the workbench 1, a partition plate 3 and a phosphor coating assembly 9 inside the test chamber 2, a heating assembly 4 and a moving assembly 7 on both sides of the partition plate 3 respectively, a rotating assembly 8 on the moving assembly 7, the rotating assembly 8 being located below the phosphor coating assembly 9, and a detection device 10 in the middle of the workbench 1, the detection device 10 being located below the rotating assembly 8.

[0025] During testing, the phosphor coating component 9 coats the phosphor to be tested onto the corresponding testing position on the rotating component 8. The moving component 7 drives the rotating component 8 into the heating component 4 and heats it to the specified temperature. Then, the rotating component 8 retracts to the corresponding position of the testing device 10 until the testing is completed. The rotating component 8 rotates, and the heating-testing process is repeated.

[0026] A shielding door 5 is rotatably connected to the partition plate 3. The height of the shielding door 5 corresponds to the rotating assembly 8. A telescopic rod 6 is rotatably connected to the partition plate 3. Two sets of telescopic rods 6 are provided and rotatably connected to both sides of the shielding door 5. The heating assembly 4 includes a heater 41. A heating chamber 42 is provided on the upper part of the heater 41. The position of the heating chamber 42 corresponds to the shielding door 5 and the rotating assembly 8.

[0027] The heating component 4 forms a spatial correspondence with the heating chamber 42 with a specific structure, the shielding door 5, and the rotating component 8, so that heat can be accurately transferred to the workpiece to be processed on the turntable 82. Combined with the directional shielding structure, heat loss is reduced, which improves heating uniformity and reduces energy consumption costs.

[0028] The moving component 7 includes a first drive motor 71, a displacement screw 72, a sliding rod 73, and a moving block 74. The displacement screw 72 is connected to the output end of the first drive motor 71. The moving block 74 is fixedly connected to the rotating component 8. The moving block 74 is sleeved on the displacement screw 72 and the sliding rod 73. The moving block 74 is threadedly connected to the displacement screw 72 and slidably connected to the sliding rod 73.

[0029] The moving component 7 adopts a transmission and guiding structure that combines lead screw drive and sliding rod to achieve linear displacement of the moving block 74.

[0030] The rotating assembly 8 includes a base 81, on which a turntable 82 is rotatably connected. A second drive motor 83 is provided on the base 81. The turntable 82 is connected to the output end of the second drive motor 83. Multiple sets of evenly distributed extension plates 84 are fixedly connected to the outer side of the turntable 82. A through detection port 85 is provided on the extension plate 84. A light-transmitting plate 86 is provided inside the detection port 85.

[0031] The rotating assembly 8 is equipped with an array of detection ports 85 distributed by the extension plate 84 and a light-transmitting plate 86. Combined with the continuous rotation function of the turntable 82, it can realize batch loading and automatic cyclic detection of multi-station samples, significantly improving detection efficiency.

[0032] The phosphor coating assembly 9 includes a mounting plate 91, a material input pipe 92 is provided on the mounting plate 91, a phosphor nozzle 93 is provided below the material input pipe 92, a lifting push rod 94 is fixedly connected to the lower part of the mounting plate 91, and a coating brush 95 is fixedly connected to the end of the lifting push rod 94.

[0033] The phosphor coating assembly 9 adopts a dynamic coating mechanism driven by the lifting push rod 94. Through the synergistic effect of quantitative spraying from the nozzle and mechanical brushing, it achieves precise coverage of phosphor and ensures the uniformity of coating thickness for different batches of products.

[0034] The detection device 10 includes a testing device body 101 and a photometer 103. A light-emitting part 102 is provided on the upper part of the testing device body 101, and the photometer 103 is located on the upper part of the testing chamber 2. The position of the photometer 103 corresponds to that of the light-emitting part 102.

[0035] The detection device 10 is designed with corresponding light-emitting parts 102 and photometric end 103, and combined with the light transmission characteristics of the detection port 85, it directly performs in-situ transmission spectrum analysis on the coated phosphor layer to complete the thermal stability detection of the phosphor.

[0036] The working principle of the phosphor thermal stability testing device provided by this utility model is as follows:

[0037] During testing, the phosphor coating component 9 coats the phosphor to be tested onto the corresponding testing position on the rotating component 8. The moving component 7 drives the rotating component 8 into the heating component 4 and heats it to the specified temperature. Then, the rotating component 8 retracts to the corresponding position of the testing device 10 until the testing is completed. The rotating component 8 rotates, and the heating-testing process is repeated.

[0038] Compared with related technologies, the phosphor thermal stability testing device provided by this utility model has the following advantages:

[0039] The combination of partition plate 3, shielding door 5 and telescopic rod 6 physically isolates the heating area from the moving operation area, isolating the heating chamber 42 and the space on the other side used for testing, thus avoiding the impact of the heating process on the moving component 7 and the testing device 10. At the same time, the moving component 7 and the rotating component 8 work together to realize the batch carrying and automatic cyclic testing of multi-station samples, improving the testing efficiency.

[0040] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for testing the thermal stability of phosphors, characterized in that, The utility model relates to a test bench for fluorescent powder coating, which comprises a workbench, a test room arranged on the workbench, a partition plate and a fluorescent powder coating assembly arranged in the test room, a heating assembly and a moving assembly arranged on both sides of the partition plate, a rotating assembly arranged on the moving assembly and located below the fluorescent powder coating assembly, a detection device arranged in the middle of the workbench and located below the rotating assembly. The partition plate is rotatably connected with a shielding door, the height of the shielding door corresponds to the rotating assembly, the partition plate is rotatably connected with an extension rod, the extension rod is provided with two groups and is rotatably connected with both sides of the shielding door, the heating assembly comprises a heater, the upper part of the heater is provided with a temperature rising room, the position of the temperature rising room corresponds to the shielding door and the rotating assembly. 2.The device for testing the thermal stability of phosphor according to claim 1, characterized in that, The moving assembly comprises a first driving motor, a displacement screw rod, a sliding rod and a moving block, the displacement screw rod is connected with the output end of the first driving motor, the moving block is fixedly connected with the rotating assembly, the moving block is sleeved on the displacement screw rod and the sliding rod, the moving block is screw-connected with the displacement screw rod, and the moving block is slidingly connected with the sliding rod. 3.The device for testing thermal stability of phosphor according to claim 2, characterized in that, The rotating assembly comprises a base, the base is rotatably connected with a rotating disc, the base is provided with a second driving motor, the rotating disc is connected with the output end of the second driving motor, the outer side of the rotating disc is fixedly connected with a plurality of uniformly distributed extension plates, the extension plates are provided with penetrating detection openings, and the detection openings are provided with light transmission plates. 4.The device for testing thermal stability of phosphor according to claim 3, characterized in that, The fluorescent powder coating assembly comprises a mounting plate, the mounting plate is provided with a material input pipe, the lower part of the material input pipe is provided with a fluorescent powder spray head, the lower part of the mounting plate is fixedly connected with a lifting push rod, and the tail end of the lifting push rod is fixedly connected with a coating brush.

5. The device for testing the thermal stability of phosphor according to claim 1, wherein, The detection device comprises a test device main body and a light measuring end, the upper part of the test device main body is provided with a light emitting part, the light measuring end is located at the upper part of the test room, and the position of the light measuring end corresponds to the light emitting part. 6.The device for testing thermal stability of phosphor according to claim 1, wherein, ​

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