Vertical spiral pressurized sludge granulator

Abstract

The invention discloses a vertical spiral pressurized sludge granulator, which comprises a support, a granulation device, a belt conveyor and a scraper, wherein the granulation device comprises a motor, a coupling, a main thrust bearing, a pressurized screw, a main working cylinder, a grain throwing head bearing, a shaft seal nut, a rotary grain throwing head and a speed-reducing rotary disc. Thegranulator adopts the screw to pressurize and a double-spiral stator to pressurize in a matching way and a horn-shaped discharge port structure so as to increase the extrusion force of sludge extrusion forming and improve the strength of sludge forming particles; the granulator is vertical and has a hopper-shaped feed port structure, and the rotary grain throwing head continuously discharges materials, thereby improving the efficiency of continuous operation and increasing the sludge forming yield; and the granulator has reasonable structure and convenient and safe operation.

Description

technical field [0001] The invention discloses a vertical screw pressurized sludge granulator, which belongs to engineering machinery. Background technique [0002] According to relevant predictions, the amount of urban sewage in my country will increase substantially in the next two decades, and the amount of sewage discharged in 2010 will reach 440×10 8 m 3 / d; In 2020, the sewage discharge will reach 536×10 8 m 3 / d; The amount of sludge usually accounts for 0.3% to 0.5% (volume) of the sewage volume or about 1% to 2% (mass) of the sewage treatment volume. Moreover, if the sewage is further treated, the amount of sludge will increase by 0.5 to 1 times. At present, my country's sewage treatment capacity and treatment rate are not high (4.5%), and urban sewage treatment plants discharge about 9 million tons of sludge every year, and it is also increasing at a rate of about 10% per year. A large amount of sludge output makes sludge treatment an urgent need. [0003] As...

AI Technical Summary

Problems solved by technology

However, at present, domestic sludge granulation and landfill treatment is still in a blank stage, and there is an unprecedented shortage of special mechanical equipment for sludge granulation, and some existing equipment still faces unstable granulation, low strength, continuous Low work rate and other difficulties

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