Microwave heating weight detection device

Abstract

The invention discloses a microwave heating weight detection device which comprises a gas treating device, a microwave inner cavity shell, a ceramic plate which is arranged in a microwave inner cavity and is used for placing a quartz bottle, and a supporting plate arranged at the outer bottom part of the microwave inner cavity shell, wherein one end of a quartz rod is arranged on the supporting plate through a fixing clip and the other end of the quartz rod penetrates through a quartz rod jack at the bottom of the microwave inner cavity shell to stretch into the microwave inner cavity to support, so as to support the ceramic plate; the gas treating device comprises a gas treater and a fan; one end of the gas treater is communicated with a gas outlet of the microwave inner cavity shell through a gas guide pipe and the other end of the gas treater is communicated with the fan through a pipeline; and a pressure sensor stretches into the microwave inner cavity through a pressure sensor jack. According to the microwave heating weight detection device disclosed by the invention, pressure of the inner cavity can be stabilized in a microwave heating process and pressure in the inner cavity is adjusted to be a pre-set pressure value, so that the online change of the weight in the microwave heating process and a pyrolysis process can be detected; and the microwave heating weight detection device is low in construction cost and strong in practical applicability, and meets environment-friendly requirements.

Description

technical field [0001] The invention relates to a weight detection device, in particular to a microwave heating weight detection device. Background technique [0002] Microwave is an electromagnetic wave with a very short wavelength (the wavelength range is usually 0.1mm to 1m), and its frequency is 300MHz~300GHz. The frequencies permitted by the state for microwave heating equipment are 915MHz and 2450MHz. [0003] Classified by the dielectric structure of molecules, molecules can be divided into polar molecules and non-polar molecules. Under the action of the electromagnetic field, the polar molecules will change from a scattered distribution state to an orderly state with the same direction as the electromagnetic field, and the direction of the microwave electromagnetic field is constantly changing, so the polar molecules will continuously change with the direction of the electromagnetic field. When the vibration changes back and forth, the molecules will move violently,...

AI Technical Summary

Problems solved by technology

However, in recent years, when microwave heating biomass and other materials, researchers and enterprises mainly study the temperature change law of microwave heating, but when studying the weight change of microwave heating, there is a problem of unstable weight detection. When the material is heated by microwave, a large amount of volatile matter, droplet-like biomass oil and heat are precipitated, which makes the pressure of the microwave cavity change sharply, and accurate weight detection needs to be carried out under normal pressure

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