Sludge stirring and granulating rotary drying device

Abstract

The invention discloses a sludge stirring and granulating rotary drying device, which consists of a base, a rotary drum, a feeding device, a stirring shaft, a discharging box, a driving device and a control box. The front end in the rotary drum is provided with a guiding screw; two ends of the rotary drum are respectively provided with a flue gas inlet and a flue gas outlet; the base is provided with a lifting bracket on which the rotary drum, the feeding device, the stirring shaft and the discharging box are arranged; the stirring shaft and the rotary drum are eccentrically arranged; a plurality of mixing blades are arranged along the axial direction of the stirring shaft; and the inner wall of the rotary drum is provided with a shovelling plate. The lifting bracket is convenient to adjust the tilt angle of the rotary drum so as to adjust the retention period of materials in the drum and the moisture content of dry sludge; the stirring shaft is provided with the stirring blades to serve as a stirring and granulating device, and the wall of the rotary drum is provided with the shovelling plate, so the problem that the sludge is caked and sticks to the wall in the drying process is solved; and the produced sludge granules are uniform, and are suitable to be burnt and used as building materials and the like.

Description

Technical field: [0001] The invention relates to the field of machinery, in particular to material drying equipment, in particular to sludge drying equipment, in particular to a sludge stirring, granulating and rotary drying device. Background technique: [0002] In the prior art, there are two types of sludge drying technology, one is indirect drying with heat media such as water vapor or heat transfer oil; the other is direct drying with combustion flue gas. The indirect drying method requires the use of special chemical drying equipment. The advantage is that the sludge heating temperature is low and the production environment is relatively clean, but the investment is relatively large. The direct drying method is widely used because of low investment, but the amount of tail gas to be treated is relatively large. The Chinese patent "Urban Dewatered Sludge Drying Equipment" (Patent No. 99241530.6) and the patent "Roller Sludge Dryer" (Patent No. 02254415.1) propose two ty...

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Problems solved by technology

[0003] The object of the present invention is to provide a sludge stirring and granulating rotary drying device. The sludge stirring and granulating rotary drying device should solve the problem that the sludge dryer in the prior art cannot adjust the angle of the drum and the flow direction of the flue gas. , The sludge is easy to stick into large pieces, and the technical problems of uneven sludge feeding

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