Waste heat energy saving automatic humidification and drying line

Abstract

The invention relates to a waste heat energy saving automatic humidification and drying line. The waste heat energy saving automatic humidification and drying line comprises a drying area and an automatic humidification area arranged at the outlet of the drying area. The drying area is divided into an upper layer and a lower layer, the upper-layer drying area and the lower-layer drying area are respectively provided with a product conveying line, and the product conveying line of the upper-layer drying area is connected with the product conveying line of the lower-layer-drying area; the lower-layer drying area is provided with a drying channel the product conveying line of the lower-layer drying area is arranged inside the drying channel, a plurality of heat exchangers are arranged inside the drying channel and arranged above the product conveying line. By means of a drying humidification mode, the waste heat energy saving automatic humidification and drying line makes full use of heat radiated by the heat exchangers, dried products can directly enter the automatic humidification area for humidification, so that comprehensive and uniform product humidification can be guaranteed, meanwhile the humidification process time can be reduced, pull cracks, breakage and unevenness of paper-plastic products during subsequent shaping can be effectively avoided, and high source utilization rate, good product quality and high working efficiency can be obtained.

Description

technical field [0001] The invention relates to product drying technology, in particular to a humidifying and drying line for shaping paper and plastic products. Background technique [0002] In the molding process of paper-plastic products, after mold molding, the molded products need to be dried because of their high moisture content. At present, the widely used drying method is tunnel drying, that is, tunnel drying is set in the drying area. The drying channel transfers the products to be dried into the tunnel drying channel, and uses the high temperature required by the products in the tunnel drying channel to evaporate the moisture in the product. This drying method does not fully utilize the lower heat in the drying area after it rises, but only uses the heat below the tunnel, which has the disadvantage that the energy cannot be fully utilized, and does not conform to the national general policy of developing circular economy, energy saving and emission reduction. . ...

AI Technical Summary

Problems solved by technology

This drying method does not fully utilize the lower heat in the drying area after rising, but only uses the heat below the tunnel, which has the disadvantage that the energy cannot be fully utilized, and does not conform to the national general policy of developing circular economy, energy conservation and emission reduction.

In addition, the dried paper-plastic products should be parked for at least 24 hours before shaping. In the south, because the air is relatively humid, the dried paper-plastic products will absorb part of the moisture in the air after parking, and will be stretched during the subsequent shaping process. Cracks, breakage, and unevenness are less, and the qualified rate of products is relatively higher. However, in the north, the air is relatively dry. Although the dried paper and plastic products absorb part of the moisture in the air after being parked, the absorbed moisture is relatively small. There are many cases of cracking, damage, and unevenness in the subsequent plastic surgery process, and the product qualification rate is relatively low

It can be seen that during the entire production process of paper-plastic products, the dried paper-plastic products need to be parked for at least 24 hours, which has long production time and low work efficiency. Poor, low pass rate, cracked, damaged, uneven paper-plastic products need to be returned to the furnace for reprocessing, wasting manpower and material resources

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