Distilling flask heating device and method which are capable of avoiding dry burning

Abstract

The invention relates to a distilling flask heating device and a method which are capable of avoiding dry burning. The distilling flask heating device comprises a pedestal, and a heating sleeve (3) arranged in the pedestal; a semispherical cavity with an upward opening is formed in the heating sleeve (3); the bottom of the heating sleeve (3) is provided with a heating sleeve through hole, and an infrared ray temperature detection unit and a controller (12); the infrared ray temperature detection unit is contacted with the bottom of a distilling flask (2) through the heating sleeve through hole; the controller (12) is connected with the heating sleeve (3) and the infrared ray temperature detection unit respectively through electric connection; the infrared ray temperature detection unit isused for monitoring the temperature of the distilling flask (2), and feedback to the controller (12); the controller (12) is used for controlling the heating process of the heating sleeve (3). Compared with the prior art, the advantages are that: the distilling flask heating device and the method are invented based on contact-free infrared temperature-test technology, so that accurate and real time distillation process monitoring, overheating power-off protection, short circuit damage protection of heating resistance wires, and a compact structure are realized.

Description

technical field [0001] The invention relates to the field of distillation, in particular to a heating device and method for preventing dry boiling of a retort. Background technique [0002] At present, the commonly used distillation heating devices are divided into two types: traditional flat electric furnace and concave electric heating mantle. Due to the high energy consumption and low thermal efficiency of the former, the scope of application of the former is less than that of the concave electric heating mantle (which can be hemispherical). The concave electric heating mantle is usually composed of asbestos fibers, and the resistance wire is wrapped inside the asbestos fibers. However, because the traditional concave electric heating mantle half-wraps the retort bottle, it is difficult to observe the distillation boiling and the operation status of the device with the naked eye, especially in the case of excessive heating or liquid leakage and short circuit, which may ca...

AI Technical Summary

Problems solved by technology

This utility model can realize the monitoring of the temperature in the heating process, but it can monitor the temperature through the thermocouple, and cannot monitor the distillation temperature of the strong corrosive substances that need to be strictly sealed, and there is no abnormal temperature to automatically cut off the power supply device

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