Drying equipment of heat pump

Abstract

The invention discloses drying equipment of a heat pump, comprising a medium tank, a medium circulating pipeline, a heat pump and a dryer. The dryer comprises a machine rack, and a main chassis body, a bearing base and a motor mounted on the machine rack. The main chassis body is internally provided with a plurality of hollow heat stirring shafts matched with bearing bases at the both ends and a heating mantle which is formed by densely arranging a plurality of stainless steel pipes. The heat stirring shafts are coated by the heating mantle. One end of the main chassis body is provided with afeeding opening and the other end of the main chassis body is provided with a discharging opening. An air outlet is arranged at the upper part of the main chassis body. One end of each stainless steel pipe of the heating mantle is provided with a medium inlet and the other end of each stainless steel pipe of the heating mantle is provided with a medium outlet. Rotary joints are arranged at both ends of the heat stirring shafts. The heat stirring shafts are provided with a plurality of sections with reduced radius of cross sections. Regurgitation sleeves are sleeved on the sections reduced radiuses and impelling blades are arranged on the other sections. The drying equipment disclosed by the invention has the advantages of energy saving effect, environmental friendliness, a compact structure, easiness of maintenance, small occupied area, uniform heating and good drying effect, and can be used for drying various materials.

Description

technical field [0001] The invention belongs to a drying device, in particular to a device for drying by means of a heat pump. Background technique [0002] Sludge is an inevitable product of sewage treatment in urban sludge treatment plants. With the rapid increase of urban sewage treatment in my country, the amount of sludge produced will inevitably increase, and the problem of disposal needs to be solved urgently. At present, the relatively mature sludge treatment methods include agricultural use, composting, landfill, incineration, and building materials. However, due to the high water content of sludge, high organic content, easy corruption, bulky, complex properties and difficult to handle, the water content of sludge is the most critical factor. [0003] The application practice at home and abroad shows that the moisture content of the sludge after the traditional concentration and dehydration process cannot reach below 60%. To achieve the deep dehydration of the slu...

AI Technical Summary

Problems solved by technology

However, indirect heating drying also has obvious deficiencies: (1) The thermal efficiency and drying speed of the existing indirect heating drying technology are not as good as the direct drying technology; (2) The existing indirect heating drying equipment has moving parts, which is difficult to maintain. costly

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