Chopper type ultrathin air knife with long air outlet nozzle

Abstract

The invention discloses a chopper type ultrathin air knife with a long air outlet nozzle. The chopper type ultrathin air knife comprises a buffer body, an air knife body and two cover plates; the buffer body comprises a fixing part, two side sealing parts and two upper sealing parts; a buffer cavity is defined by the fixing part, the two side sealing parts and the two upper sealing parts; the air knife body comprises two side knife parts and two knife body parts; each side knife part comprises a side knife plate and a flow guide plate; a flow guide cavity is defined by the two side knife parts; each knife body part comprises a rectification part and an air nozzle outer edge; an inclined face and a vertical face are arranged on the inner side face of each rectification part; a rectification cavity is defined by the rectification parts of the two knife body parts; an air outlet is formed between the air nozzle outer edges of the two knife body parts; and the width of the buffer cavity, the width of the flow guide cavity, the width of the rectification cavity and the width of the air outlet are sequentially reduced. According to the chopper type ultrathin air knife, the rectification function of high-speed airflow can be achieved through the change of the width of the buffer cavity, the width of the flow guide cavity and the width of the rectification cavity, the turbulence of the high-speed airflow can be reduced, the buffer function can be achieved, and the gas pressure loss of the high-speed airflow is reduced.

Description

technical field [0001] The invention relates to the field of wind knives, in particular to a guillotine-type ultra-thin wind knives with long nozzles. Background technique [0002] In wet process equipment such as printed circuit boards and liquid crystal panels, an air knife is usually installed to generate strong wind for drying. The air knife in the prior art has the following problems: 1. The air pressure nozzle is relatively short, which cannot form a laminar flow effect, resulting in a poor drying effect, and the ejected airflow has a short range, resulting in weak cleaning ability; 2. The rectification effect Poor, the turbulence before the gas reaches the air outlet is serious, and the pressure loss of the gas and the loss along the way are large. [0003] Therefore, there are defects in the prior art and need to be improved. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a guil...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a guillotine-type ultra-thin air knife with a long nozzle to solve the problem in the prior art that the high-speed air flow ejected by the air knife cannot form a laminar flow effect, resulting in poor drying effect solve the problems of poor rectification effect, serious turbulence and large gas pressure loss in the existing air knife

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