Stirring and aeration device of vertical aerobic composting reactor

Abstract

The invention discloses a stirring and aeration device of a vertical aerobic composting reactor. The device comprises a reactor unit and a feeding unit mounted at the upper end of the reactor unit, wherein the reactor unit comprises a vertically placed hollow cylindrical reaction tank, and a blade stirring structure is rotatably mounted in the reaction tank; the blade stirring structure comprisesa hollow connecting shaft and stirring blades evenly distributed on the connecting shaft; and the outer ends of the stirring blades are connected with a plurality of scraping plates with bevel edges.According to the invention, the feeding unit is provided with a stirring shaft and knife edges alternately distributed on the stirring shaft scatter materials, so the materials can easily pass througha mesh screen; the ends of balls can enter holes of the mesh screen, so the mesh screen holes are prevented from blockage; and the particle sizes of the materials passing through the mesh screen holes are uniform, so the condition of anaerobic fermentation in the process of composting is avoided. The scraping plates are arranged in the stirring and aeration device to scrape materials, close to atank wall, in the reaction tank; and vent holes of the stirring blades are densely distributed in the edges of the blades to effectively supply oxygen, so the quality of an organic fertilizer is improved.

Description

technical field [0001] The invention relates to the technical field of organic solid waste disposal and resource utilization, in particular to a vertical aerobic composting stirring aeration device. Background technique [0002] Composting technology is widely used in the harmless treatment of organic waste such as livestock and poultry manure, waste generated in animal husbandry and fishery production processes, kitchen waste, agricultural and forestry production waste, and sludge from urban sewage treatment plants, and is converted into organic fertilizers. A technology, currently composting is usually accomplished using vertical aerobic composting reactors. [0003] The vertical aerobic composting reactor is composed of a feeding system, a stirring system, an aeration system, an odor treatment system, and a material discharge system. The air is blown into the middle, the waste gas is collected and processed in the upper part, and the compost is taken out from the bottom....

AI Technical Summary

Problems solved by technology

If the ventilation effect is not good, the temperature cannot be controlled within a reasonable range

[0005] Secondly, during the operation of the reactor, since the stirring blades in the prior art generally have a cantilever beam structure, due to the high material density inside the reactor, the stirring blades are prone to bending and breaking, which causes the traditional vertical reactor to often Maintenance, interruption of production, etc.

[0006] In addition, the particles of compost materials are large and uneven, and there is inevitably a certain degree of anaerobic fermentation in the process of aerobic composting, which affects the fermentation effect.

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