Unidirectional flow guidance type blast apparatus

Abstract

The invention discloses a unidirectional flow guidance type blast apparatus which comprises an upper blastpipe (1) arranged at the upper part of to-be-dried leather, and a lower blastpipe (2) arranged at the lower part of to-be-dried leather, wherein multiple convex ribs A (3) extending in the front-and-back direction are arranged on the bottom surface of the upper blastpipe (1); an upper air outlet (4) is formed between every two adjacent convex ribs A (3); convex ribs B (5) are arranged on the top surface of the upper blastpipe (1) at the upper parts of the convex ribs A (3); multiple convex ribs C (6) extending in the front-and-back direction are arranged on the top surface of the lower blastpipe (2); a lower air outlet (7) is formed between every two adjacent convex ribs C (6); convex ribs D (8) are arranged on the bottom surface of the lower blastpipe (2) in the lower parts of the convex ribs C (6). The unidirectional flow guidance type blast apparatus has the following benefits: the unidirectional flow of the air flow is ensured, so that the air flow is enabled to flow towards the surface of leather, convection between moisture-containing air flow and dry air flow on the right is avoided, and the utilization ratio of the dry air flow is increased to the maximum.

Description

technical field [0001] The invention relates to the technical field of leather drying devices, in particular to a unidirectional flow blowing device. Background technique [0002] Drying is an extremely important process in the leather finishing process. The dyed leather should be squeezed and stretched for the first drying. At present, the commonly used drying method is to first use iron plate or vacuum drying to reduce the moisture content of the leather to 35-42%, and then dry it naturally or in a drying room to further reduce the moisture content of the leather to about 15%. Enter the next process. For the drying in the back, most factories use hanging to dry naturally, and the drying time takes about two days. The drying time is very long, which seriously affects the leather processing efficiency. When the leather is dried by blowing hot air, the moisture of the leather is taken away by the hot air, but the existing blowing equipment also has the problems of low dryin...

AI Technical Summary

Problems solved by technology

In the latter part of the drying process, most factories use hanging to dry naturally, and the drying time takes about two days. The drying time is very long, which seriously affects the leather processing efficiency.

When the leather is dried by blowing hot air, the moisture of the leather is taken away by the hot air, but the existing blowing equipment also has the problems of low drying efficiency and long time consumption.

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