Series air current drying-machine

Abstract

This invention discloses a tandem airflow drier, which has at least three stepped separate drying areas, each drying area is constructed into the material transmission device by the two layer net ribbon, wherein the two layer net ribbons from the closed ring respectively after passing the multi-groups roller layers that supports on the front and back end of the drying area frame, and wherein the driving roller of the rollers is driven by the electric motor; the heat exchangers are mounted at one side of each separate drying area, and the heat mediums provided by the heat-supplier enter into the heat exchanger through the pipeline, after that they flow back to the heat-supplier; the next stepped drying area connects with the last stepped drying area hermetically through the transition area which has the material slide way for the material entering into the junior drying area from the senior drying area; the wind circle device which is mounted at the outside of the heat exchanger and connects with the heat exchanger connects in serials with each separate drying area in turn; the working area in each separate drying area is sealed, and the electric motor of each separate drying area runs in-phase controlled by the control system. The heat energy utilization factor in this invention is high, and the dried material fiber organizations can't be damaged easily.

Description

technical field [0001] The invention relates to a drying device for papermaking, pulp and other materials, in particular to a serial air flow dryer. Background technique [0002] In the current domestic material drying process of papermaking, pulp and other industries, most of the drying equipment adopts the drying cylinder drying system. The production process of this system is not only simple, but its technology is becoming increasingly backward, and it has become an obsolete product in developed countries. One is that the drying process is long, the production efficiency is low, and the production capacity is limited; the second is that the heat utilization rate is low and energy waste is large; the third is that the method is dry drying, and the pulp and the drying cylinder are directly Contact may easily cause damage to the fibrous tissue of the baked material. At present, foreign countries have gradually abandoned the traditional drying method of ironing and drying m...

AI Technical Summary

Problems solved by technology

Due to its narrow and long space, it will inevitably cause the hot air in the area to mix unevenly, which will reduce the water saturation of the discharged gas and reduce the thermal efficiency; at the same time, due to this structural defect, the separation effect of hot air with different humidity between layers is not good. Good, and the drying temperature of each layer is not convenient to adjust, which affects the drying effect

What's more, the structure of the equipment is integrated and closed. Once a paper break or partial failure occurs during normal operation, the processing time will be longer and the maintenance will not be convenient.

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