Mesh turning plate type drying machine utilizing exhaust heat

Abstract

The invention discloses a mesh turning plate type drying machine utilizing exhaust heat. A drying machine box body is provided with a mesh turning plate type conveyor from top to bottom, the drying machine box body is divided into an upper drying zone, a middle drying zone and a lower drying zone, the upper drying zone is connected with an induced draft fan through an air heat exchanger, emptying is conducted on the upper drying zone, a fresh air outlet of the air heat exchanger is connected with an air inlet of an air blower, an air outlet of the air blower is connected with a steam fin heater in the middle drying zone, an induced draft fan impeller is of a structure with hollow and wedge-shaped blades and a disc-shaped backing plate, and the outline of the induced draft fan is an evolvent. According to the mesh turning plate type drying machine utilizing the exhaust heat, exhaust heat utilization is concise and reasonable, damp and hot exhaust gas which is subjected to heat recovery is discharged through the induced draft fan, effective cooling is conducted on dried materials, the exhaust heat utilization is further conducted, and energy conservation and emission reduction are facilitated; by means of the structure with the hollow and wedge-shaped blades and the disc-shaped backing plate, real-time cleaning of dust is achieved, impeller strength of the induced draft fan is increased, the stability is enhanced, accidents caused by dust accumulation are effectively avoided, and the application prospect is broad.

Description

technical field [0001] The invention relates to a drying machine, in particular to a sieve-hole flap-type drying machine in which tail heat from a fan does not accumulate dust. Background technique [0002] Due to its mature technology, strong adaptability, low operating cost and high reliability, hot air dryer has become one of the first choice equipment for material drying. The sieve flap dryer is a kind of hot air dryer, which has the characteristics of simple structure and strong processing capacity, and the quality of the dried product is particularly uniform and reliable because the material is turned over layer by layer during operation. During the drying process, the sieve flap dryer needs to continuously discharge hot and humid tail gas to promote the drying process. Since the exhaust gas is rich in a large amount of tail heat, it is necessary to perform tail heat utilization operations on the tail gas. Therefore, it is important to optimize the design of tail heat ...

AI Technical Summary

Problems solved by technology

Once part of the hardened dust is shaken off, it will immediately leave the dynamic rotation balance of the induced draft fan, and then generate strong vibration, which may cause serious personnel and equipment safety accidents

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