Device for detecting heating mass of substances and gas sampling synchronously online

Abstract

The invention discloses a device for detecting the heating mass of substances and gas sampling synchronously online, and aims to provide the device which can detect the heating mass variation of substances synchronously online without the influences by the external environment, and also can collect the gas in a baking oven. The device comprises a baking oven, an installation frame, an electronic weighing device, a gas sampling device and a volume compensation device, wherein the electronic weighing device is arranged on the bottom of the baking oven and is used for weighing the mass of substances; the gas sampling device and the volume compensation device are arranged on the baking oven; the volume compensation device comprises a guide sleeve which is arranged on the side surface of the baking oven and is communicated with the inner cavity of the baking oven, and a compensation cylinder which is arranged in the guide sleeve in a sliding mode. The gas sampling device comprises a collecting cylinder body arranged on the installation frame, a piston rod arranged in the collecting cylinder body and at least two piston bodies which are arranged in the collecting cylinder body in a sliding mode, and the two adjacent piston bodies are connected by a connecting rod.

Description

technical field [0001] The invention relates to a material heating quality measurement and gas sampling device, in particular to an online synchronous detection material heating quality and gas sampling device. Background technique [0002] In the current existing technology, the following method is usually used to measure the mass change of substances (such as wood, medicinal powder, medicinal materials, etc.) After cooling to room temperature; then measure the mass of the heated substance with a balance, so as to obtain the change of the mass of the substance before and after heating. At the same time, in the process of heating the substance, the gas in the oven is drawn by the air pump, so as to collect the decomposed gas during the thermal decomposition and gasification of the substance. The current method of measuring the mass change of the substance during heating is not only inefficient, but also when the substance is taken out from the oven, cooled, and then measure...

AI Technical Summary

Problems solved by technology

At present, the online measurement of the mass change in the heating process of the material through the electronic weighing device can effectively avoid the influence of the humidity of the external environment; The decomposed gas during the thermal decomposition and gasification of the substance will form air flow in the oven; while the weighing accuracy of the electronic weighing device (such as an electronic balance) is high, and the mass change during the heating process of the substance is small , the air flow of the oven will affect the weighing accuracy of the electronic weighing device, especially for powdery substances, which are more affected by the air flow; thus making it difficult for the measurement data to be true and effective during the heating process of the reaction substance quality loss

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