Bituminous mixture mixing plant having heating and insulation system

Abstract

The invention provides a bituminous mixture mixing plant having a heating and insulation system. The plant comprises a base plate, a drying mixing drum fixed on the base plate, an asphalt storage tank and a combustion chamber, wherein one end of the drying mixing drum is communicated with the combustion chamber, the other end of the drying mixing drum is provided with an induced draught fan and a main ventilation door, an exhaust pipe is arranged between the asphalt storage tank and the induced draught fan, a heat conduction pipe is arranged to pass through the interior of the asphalt storage tank, the input end of the heat conduction pipe is communicated with the combustion chamber, the output end of the heat conduction pipe is communicated with the exhaust pipe, and a secondary ventilation door is arranged on the exhaust pipe. The invention is applicable to a variety of bituminous mixture mixing equipment; the energy of the bituminous mixture mixing plant provided in the invention is reasonably used, extra heating sources for storing and conveying asphalt in the production process of the plant are not needed, and therefore, the utilization rate of energy is improved and the advantages of energy saving, emission reduction and high cost performance are obtained.

Description

technical field [0001] The invention relates to the field of asphalt mixing material mixers, in particular to an asphalt mixing material mixing equipment with a heating and heat preservation system. Background technique [0002] Asphalt mixing equipment is the key equipment for asphalt pavement construction. It is mainly used to measure and mix sand, gravel, asphalt and other materials into asphalt mixture after heating. Usually, the asphalt is heated to a liquid state. The current asphalt liquefaction heating uses direct flame heating or direct heating with electricity. When the asphalt is liquefied, it is transported to the mixing drum by a pumping mechanism for mixing to form an asphalt mixture. Due to the uncertainty of the overall heating temperature of the system and the physical and chemical properties of the asphalt itself, if the temperature is too high, it will promote the carbonization and combustion of the asphalt, and if the temperature is too low, it will affec...

AI Technical Summary

Problems solved by technology

Due to the uncertainty of the overall heating temperature of the system and the physical and chemical properties of the asphalt itself, if the temperature is too high, it will promote the carbonization and combustion of the asphalt, and if the temperature is too low, it will affect the fluidity of the liquefied asphalt, block the delivery pipeline, and affect the operation of the entire equipment. normal work

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