Sludge ultrasonic roller drier

Abstract

The invention discloses a sludge ultrasonic roller drier. A drying cylinder is provided with a feeding opening, an exhaust opening, an ultrasonic probe and a discharging opening, wherein the ultrasonic probe is inserted into the drying cylinder and is connected with an ultrasonic generator; a hot air generator is connected with the drying cylinder; the drying cylinder is sleeved with a gear ring and a rolling ring; the rolling ring is arranged on a riding wheel and is supported by the riding wheel; the drier also comprises an adjustable speed motor; and the output shaft of the adjustable speed motor is provided with a gear which is engaged with the gear ring. In the process of drying, sludge is stirred continuously along with the rotation of the drying cylinder so as to finish drying under the combined action of ultrasonic wave and a hot air device. Due to the adoption of the sludge ultrasonic roller drier, the shortcomings of low efficiency, high operating cost and the like in the conventional sludge drying equipment are overcome; dewatering performance of the sludge is improved in a short period; a drying rate is improved; treating cost is reduced; and simultaneously sludge flocparticles become uniform and fine by the ultrasonic wave so as to contribute to post sludge resource treatment and improve energy ultilization rate.

Description

technical field [0001] The invention relates to the technical field of drying, is applicable to the drying field of sludge, coal slime, slag and solid waste, and in particular relates to an ultrasonic drum dryer for sludge. technical background [0002] Sludge is a secondary product of sewage treatment. With the increasing rate of urban sewage treatment in my country, the output of sludge has increased dramatically. Sludge contains a large number of pathogenic microorganisms and heavy metals such as lead, cadmium, mercury, copper, zinc, etc., causing great pollution to the environment. Sludge treatment has become one of the main problems urgently needed to be solved in the current society. High moisture content, high viscosity and poor solid-liquid separation performance of sludge are the main obstacles faced in the current sludge treatment. The moisture content of the sludge usually reaches more than 95%. The high moisture content makes the sludge bulky, which increases th...

AI Technical Summary

Problems solved by technology

Sludge contains a large number of pathogenic microorganisms and heavy metals such as lead, cadmium, mercury, copper, zinc, etc., causing great pollution to the environment

The treatment of sludge has become one of the main problems that the society urgently needs to solve. The high moisture content, high viscosity and poor solid-liquid separation performance of sludge are the main obstacles in the current sludge treatment.

The moisture content of the sludge usually reaches more than 95%. The high moisture content makes the sludge bulky, which increases the transportation cost and facility cost of the treatment process. At the same time, due to the presence of moisture, the sludge is prone to deterioration reactions, which bring odor, water and soil. environmental issues such as pollution

The mechanical dehydration currently used can reduce the moisture content of the sludge to about 80% on average, but cannot fundamentally change the treatability of the sludge. Subsequent treatments such as landfill, composting and incineration need to reduce the moisture content to below 60%. Therefore, how to further reduce the moisture content of sludge with high efficiency and low consumption has become a key issue in the effective treatment process of sludge.

[0003] Due to the complex structural components in the sludge and a large number of bacterial micelles, it contains a large amount of adsorbed water and bound water that are difficult to remove. At present, the existing sludge drying equipment has high operating costs and low drying efficiency.

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