Automatic temperature-controlled heat exchange device for asphalt

Abstract

The invention discloses an automatic temperature-controlled heat exchange device for asphalt. The device comprises a boiler, a first heat exchanger, a second heat exchanger, a high-temperature tank and an asphalt pump, wherein the discharging end of the asphalt pump is connected with the feeding end of the first heat exchanger through a material conveying pipeline; the discharging end of the first heat exchanger is connected with the feeding end of the second heat exchanger through a material conveying pipeline; the discharging end of the second heat exchanger is connected with the feeding end of the high-temperature tank through a material conveying pipeline; the air inlet end of the second heat exchanger and the air inlet end of the first heat exchanger are connected with air inlet branch pipelines through flanges; the same ends of the two air inlet branch pipes are connected with the same air inlet main pipeline; one end of the air inlet main pipeline is connected with the air outlet end of the boiler. According to the automatic temperature-controlled heat exchange device disclosed by the invention, accurate temperature control is realized; the boiler, the first heat exchanger and the second heat exchanger are additionally arranged between the asphalt pump and the high-temperature tank, so that the time required by heating the asphalt is shorter; moreover, a frequency converter body is conveniently mounted on the asphalt pump, the temperature is accurately controlled, and the operation is convenient.

Description

technical field [0001] The invention relates to the technical field of temperature-controlled heat-exchange devices, in particular to an automatic temperature-controlled heat-exchange device for asphalt. Background technique [0002] In the past, the heating of asphalt was done directly in the tank. Through the heat transfer method of heat transfer oil, a tank of asphalt was heated to the required temperature using the existing method. Since the heating area of ​​the heating coil is small, each It can only raise the temperature by 3-5°C in an hour, and there are technical problems of long heating time and high cost; [0003] Moreover, it is very difficult to adjust and control the temperature. In the past, it was required to control the temperature of asphalt at 150-190°C, mainly by controlling the flow of asphalt, and the flow of asphalt needs to be realized by manually adjusting the return valve, which is laborious for manual operation. It is laborious and difficult, and ...

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Problems solved by technology

[0002] In the past, the heating of asphalt was done directly in the tank. Through the heat transfer method of heat transfer oil, a tank of asphalt was heated to the required temperature using the existing method. Since the heating area of ​​the heating coil is small, each It can only raise the temperature by 3-5°C in an hour, and there are technical problems of long heating time and high cost;

[0003] Moreover, it is very difficult to adjust and control the temperature. In the past, it was required to control the temperature of asphalt at 150-190°C, mainly by controlling the flow of asphalt, and the flow of asphalt needs to be realized by manually adjusting the return valve, which is laborious for manual operation. It is laborious and difficult, and the flow is controlled entirely by experience, so as to achieve temperature control, and the temperature control is not accurate;

[0004] During the heating process, the path of the heating oil is long, the heat loss is large, and the efficiency is greatly reduced

[0005] In addition, it is convenient to control the speed of the asphalt pump. A frequency converter is installed on the asphalt pump, but it is inconvenient to install the frequency converter on the asphalt pump.

[0006] In order to solve the problem of the long heating time required for asphalt and the inconvenience of installing the frequency converter on the asphalt pump, an automatic temperature control heat exchange device for asphalt was proposed

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