Low-temperature heat pump sludge drying machine with extrusion water filtering function

Abstract

The invention relates to a low-temperature heat pump sludge drying machine with an extrusion water filtering function, which comprises a drying box body, an extrusion water filtering feeding assemblyfor feeding is arranged on one side of the drying box body, and the output end of the extrusion water filtering feeding assembly is connected with a tabletting mechanism. Sludge to be dried is pretreated through the extrusion water filtering and feeding assembly, most of moisture in the sludge is removed through rotary extrusion, then the sludge is dried through the low-pressure heat pump and theelectric heating plate, the problem that odor is generated due to the too high temperature is solved, and the drying cost is low. Besides, the sludge to be dried can be pressed to be uniform in thickness through the arrangement of the tabletting mechanism, the sludge is dried after the thickness of the sludge is uniform, the drying effect is good, and the problem that the sludge is not dried thoroughly is solved.

Description

technical field [0001] The invention relates to the technical field of sludge drying, in particular to a low-temperature heat pump sludge drying machine with the function of squeezing and filtering water. Background technique [0002] With the acceleration of urbanization, the discharge of urban industrial wastewater and domestic sewage is increasing, and the urban sewage treatment rate is also increasing year by year. The sludge output of urban sewage treatment plants has also increased sharply, and sewage treatment plants have to discharge a large amount of surplus sludge. A huge amount of sludge needs to be further treated. If the sludge is not properly treated, it will cause secondary pollution. In the sludge treatment process, the sludge drying treatment is the most important. After drying, the sludge can be used For land improvement, building material utilization, etc. At present, the sludge drying equipment commonly used in the market generally directly heats the slu...

AI Technical Summary

Problems solved by technology

At present, the sludge drying equipment commonly used in the market generally directly heats the sludge at high temperature to evaporate the water contained in the sludge, which not only requires high energy consumption, but also produces odor when the temperature is too high, and corresponding tail gas treatment needs to be installed equipment to process, the cost is higher

In addition, when the sludge is dried, due to the different thickness of the sludge, the drying effect is poor, and the problem of incomplete drying is prone to occur.

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