Novel closed sludge drying machine

Abstract

The invention discloses a novel closed sludge drying machine, which comprises a heat pump assembly and a drying assembly, the heat pump assembly comprises a main system heat exchange system and an auxiliary heating system, the drying assembly comprises a sludge conveying system, and the sludge conveying system comprises at least two layers of sludge conveying units, the main system heat exchange system generates first drying hot air, and the first drying hot air sequentially penetrates through the sludge conveying unit to heat and dry the sludge conveying unit; and the auxiliary heating systemgenerates second drying hot air, and the second drying hot air is converged into the first drying hot air penetrating out of the sludge conveying unit for the first time and later time and is used for increasing the temperature of the first drying hot air. An air circulation system of the drying machine is simple in structure, the hot air heat among the sludge conveying units is equal, the sludgedrying time of the sludge conveying units is the same, and the drying effect, efficiency and operation energy efficiency of the drying machine are improved.

Description

technical field [0001] The invention discloses a novel closed sludge drying machine, which belongs to the technical field of drying machines. Background technique [0002] The drying system of the existing sludge dryer includes a multi-layer sludge transfer unit, and the drying hot air produced by the heat pump system passes through the sludge transfer units of each layer to dry them in sequence, thus causing a gap between different layers. The difference in the heat of the air supply is large, and the specific performance is: the temperature of the lower layer is high, the temperature of the upper layer is low, and the heat of the upper and lower layers of the air supply is uneven; resulting in a large difference in the drying time of the sludge transfer units at different levels, which affects the drying effect, efficiency and operation. efficiency. In addition, the existing sludge drying machines generally have the disadvantage of complex structure of the air circulation...

AI Technical Summary

Problems solved by technology

[0002] The drying system of the existing sludge dryer includes multi-layer sludge transfer units, and the drying hot air produced by the heat pump system passes through the sludge transfer units of each layer to dry them in sequence, thus causing The heat difference of the air supply is large, and the specific performance is: the temperature of the lower layer is high, the temperature of the upper layer is low, and the heat of the air supply of the upper and lower layers is uneven; resulting in a large difference in the drying time of the sludge transfer unit at different levels, which affects the drying effect, efficiency and operation. efficiency

In addition, the existing sludge dryers generally have the disadvantage of complex structure of the air circulation system

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