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Coating dryer and its special nozzle

A dryer and tuyere technology, which is applied to the device, coating, pretreatment surface, etc. for coating liquid on the surface. The layer thickness is inconsistent, ensuring stability and the effect of stable thrust

Active Publication Date: 2016-05-04
SHENZHEN HAONENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further, by image 3 It can be seen that the air nozzle 60 of the existing coating dryer is designed to disperse the structure of two air outlets 61 on the left and right, which makes it easy for the wind 100 in the air chamber to flow to the air outlet of the air nozzle 60 inside due to fluid The vortex 62 is formed by the sudden change of the passing ventilation cross-sectional area. It is measured by experiments that the generation of the vortex 62 will cause the wind speed deviation of 2 to 3 m / min when the average wind speed of the air outlet of the tuyere 60 is 8 m / min, and the wind speed is not high. Stabilization can cause the foil to vibrate resulting in inconsistent coating thickness

Method used

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  • Coating dryer and its special nozzle
  • Coating dryer and its special nozzle
  • Coating dryer and its special nozzle

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Experimental program
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Effect test

Embodiment 1

[0017] In the above structure, the section of the air chamber 40 of the air nozzle is an isosceles triangle, and the straight-through section is connected to the apex of the isosceles triangle. As a general choice, the shape of the air chamber 40 will not affect the wind speed of the wind blown out of the final air outlet. However, if the air chamber is designed as an isosceles triangle, not only can the fluid flow into the air chamber 40 of the air nozzle have better fluidity, but also the structure of the air chamber 40 can be easily produced.

Embodiment 2

[0019] In the above structure, the length of the straight section is not less than 20mm. It can be seen from the above that the straight-through section 41 plays a key role in the tuyere, and in order to ensure its pressure equalization effect, the length of the straight-through section should not be less than 20 mm. Theoretically, it is the same as the principle of increasing the barrel length and the stability of the outgoing shells, so the longer the straight-through section can have a better balance on the passing wind, but considering the actual product application environment, after repeated experiments , optimally, the length of the through section is 20-28mm is optimal.

Embodiment 3

[0021] In order to ensure a better wind speed, the inner diameter of the straight-through section should be designed at 3-5mm, which is the best.

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Abstract

The invention provides a coating dryer and an air nozzle special for the coating dryer. The air nozzle special for the coating dryer comprises an air chamber and a straight section, one end of the straight section is communicated with the air chamber, and an air outlet is formed in the other end of the straight section. Compared with a scattered air outlet mode used in an air outlet of a common air nozzle, the coating dryer and the air nozzle special for the coating dryer have the advantages that the straight section is arranged in front of the air outlet of the air nozzle, so that fluid is led to pass through a section of flat channel, due to the fact that sudden size variation of the ventilation section area does not exist in the straight section, eddies can not be caused, a pressure equalizing area can be formed in the straight section instead, and the stability of the speed of air blown out from the air outlet finally is guaranteed. When the air nozzle is applied to the coating dryer, due to the fact that the air speed after pressure equalizing is stable, the air speed enables upward pushing force formed by the air blown out from the air nozzle to foil materials to be stable, the chattering phenomenon of the foil materials can not happen in a drying oven, and the problem that the thicknesses of coatings are not consistent is solved.

Description

technical field [0001] The invention relates to the field of lithium battery manufacturing equipment, in particular to a coating dryer and a special air nozzle thereof. Background technique [0002] In the manufacturing process of lithium batteries, after the coating process on the substrate, it is necessary to dry the slurry (commonly known as foil tape) coated on the substrate. The processing of this process step is usually performed by a coating dryer. Achieved. Such as figure 1 Shown is an existing typical coating dryer, its structure consists of an outer shell 90, the two ends of the middle of the outer shell are provided with a foil belt 50 inlet and outlet, and the upper and lower inside the outer shell are respectively provided with upper air chambers 80 , The lower wind chamber 70, the upper wind chamber 80, and the lower wind chamber 70 are all provided with air nozzles 60 facing the direction of the foil belt. Further, by image 3 It can be seen that the air n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D3/04
Inventor 苏建贵李永波
Owner SHENZHEN HAONENG TECH
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