Air pipe structure for hot air oven

Abstract

The invention discloses an air pipe structure for a hot air oven and belongs to the technical field of non woven fabric machinery. The air pipe structure comprises a pipe body which is provided with a large head end and a small head end and is provided with a rectangular cross section gradually narrowing from the large head end to the small head end; the large head end of the pipe body forms an air inlet which is used for introducing hot air into a pipe cavity and the upper part of the pipe body in the length direction forms air outlet channels which are communicated with the pipe cavity; theair pipe structure is characterized in that: the upper part of the pipe body is provided with a set of air duct pipes which are arranged at intervals; the air outlet channels are positioned among theair duct pipes; and all air duct pipes gradually narrow from the upper parts to the pipe cavity to ensure that the widths of the air duct pipes are gradually reduced from the bottoms of the air duct pipes to the tops of the air duct pipes. The air pipe structure has the advantage of meeting the hot air penetration requirement of nonwoven fabrics or webs with large thickness.

Description

technical field [0001] The invention belongs to the technical field of non-woven machinery, and in particular relates to an air duct structure of a hot air oven. Background technique [0002] The hot air oven is one of the indispensable equipment in the complete set of non-woven fabric production equipment or production line, which can be provided by the direct current processing device for paper and similar items disclosed in US patent US5052197 and the Chinese utility model patent authorization announcement number CN2286763Y The technical content of a non-woven fabric forming machine is understood in detail, and the structure of the hot air oven is described in detail in these two patents. However, these two patents are only suitable for processing thinner non-woven fabrics with a smaller grammage, and for non-woven fabrics with a grammage greater than 100g / ㎡ after needle punching and for laminating machines. The cotton web layer behind the net cannot be processed. [00...

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Problems solved by technology

However, no matter which of the above two methods is adopted, it will cause unfavorable factors of increased energy consumption, which is contrary to the economic spirit of conservation and energy conservation advocated by the whole society.

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