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
CN101143354BInactive Publication Date: 2011-04-27NANJING HUAXIAN HIGH TECH CO LTD
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING HUAXIAN HIGH TECH CO LTD
Publication Date
2011-04-27
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More