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Shadow mask type plasma display fluorescent powder constant-temperature and constant-pressure spraying device

A plasma, constant temperature and constant pressure technology, which is applied in the field of phosphor spraying devices and phosphor constant temperature and constant pressure spraying devices, can solve the problem of uneven spraying, achieve stable flow, simple control, and a wide range of applications

Inactive Publication Date: 2011-04-27
NANJING HUAXIAN HIGH TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to design a constant temperature and pressure constant temperature and pressure uniform phosphor powder constant temperature for the shadow mask type plasma display to solve the problem of uneven spraying caused by a series of problems such as temperature, pressure and stirring in the existing phosphor powder spraying. Constant pressure spraying device

Method used

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  • Shadow mask type plasma display fluorescent powder constant-temperature and constant-pressure spraying device
  • Shadow mask type plasma display fluorescent powder constant-temperature and constant-pressure spraying device

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0011] As shown in Figure 1.

[0012] In Figure 1:

[0013] 1. For the spray gun: under the action of compressed air, make the phosphor powder slurry produce a uniform coating.

[0014] 2. It is a constant temperature heat exchange system: keep the phosphor powder slurry in the tank at the set temperature.

[0015] 3. For the agitator: through the pneumatic agitation pump, the liquid slurry is fully mixed to prevent sedimentation.

[0016] 4. As a thermometer: measure the temperature of the slurry.

[0017] 5. For liquid level gauge: detect liquid level height.

[0018] 6. It is a constant pressure valve: make the pressure in the tank reach the set value, which is displayed by the pressure gauge 7.

[0019] 7. For the pressure gauge: display the pressure inside the tank.

[0020] 8. For compressed air source: provide power source.

[0021] 9. For...

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Abstract

A phosphor constant temperature and pressure spraying device of a plasma display panel with shadow mask belongs to plate television manufacturing equipment, which includes a spray gun (1) and a slurry tank (9). The slurry tank (9) is connected with a feed port (10), an exhaust port (11) and a material discharging port (12). The feed port of the spray gun (1) is respectively connected with a compressed air source (8) and the slurry tank (9) and is characterized in that the tank wall of the slurry system tank (9) is a double-layer structure. Liquid medium is arranged in the tank wall and is connected with a heat exchange system (2). The compressed air source (8) is communicated with the space on the upper part of the liquid in the slurry tank (9) through an air pipe. The air pipe is equipped with a constant pressure valve (6). A stirring shaft (3) is installed in the slurry tank (9) and is driven by a stirring motor. The present invention solves a problem that a present spraying system sprays unevenly and has the advantages of simple structure and good spraying effect.

Description

technical field [0001] The invention relates to a spraying device, in particular to a phosphor powder spraying device used in the manufacturing process of a flat panel display, in particular to a constant temperature and constant pressure phosphor powder spraying device for a shadow mask plasma display. Background technique [0002] As we all know, in the SMPDP phosphor powder spraying process, due to the large specific gravity of the phosphor powder, it is easy to precipitate in the ethanol slurry. During the spraying process, if a certain stirring speed is not maintained, it is difficult to guarantee the uniformity of the slurry. Once the phosphor settles, it is easy to block the spray gun. Moreover, the temperature has a great influence on the viscosity of the slurry. To obtain the best spraying effect from the spray gun, it must be obtained under the condition of constant viscosity. Therefore, it is very important to keep the temperature constant. In addition, the amou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/28B05B12/08B05B9/04H01J9/22B05B12/10
CPCB05B7/166B05B7/2494B05B7/2489B05B7/1436
Inventor 王儒林朱立锋张雄王保平林青园
Owner NANJING HUAXIAN HIGH TECH CO LTD
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