Low-pressure fixation machine adopting second-order method for measuring humidity and water content measuring method

Abstract

The invention discloses a low-pressure fixation machine adopting second-order method for measuring humidity and a water content measuring method of the low-pressure fixation machine. The low-pressurefixation machine comprises a low-pressure fixation machine body, a thermometer, a first air pump and a low-pressure air pumping pipe, wherein the thermometer is connected to the low-pressure fixationmachine body and detects the temperature inside the low-pressure fixation machine body, and one end of the low-pressure air pumping pipe is connected in the low-pressure fixation machine body. The principle of low-pressure dehumidification, namely, the relationship between evaporation temperature and pressure, is adopted in the processing process, and the lower the pressure is, the lower the evaporation temperature is; and a low-pressure dehumidifying tank is designed, the first air pump continuously pumps air to the external environment to achieve a low-pressure environment, so that the boiling point of water in tea leaves is reduced along with the atmospheric pressure, and under a standard atmospheric pressure, the boiling point of water is 100 DEG C, and when the atmospheric pressure isonly 0.016451 MPa, the temperature is only 56 DEG C, water in the tea leaves can be converted into water vapor in large quantities, and is then pumped out from the first air pump.

Description

technical field [0001] The invention relates to the field of tea green-fixing devices, more specifically, to a low-pressure green-cleaning machine for measuring humidity by a second-stage method and a method for measuring moisture content thereof. Background technique [0002] Green tea is currently the most important type of tea in my country, and occupies a more important position than other varieties in the tea industry. The basic processing technology of green tea is: spreading → finishing → kneading → drying. The first process of green tea primary production is exactly greening, the quality of its effect directly affects the processing of green tea and the formation of its quality. Fixing is a key process in green tea processing. Fixing is to take high temperature measures to emit water in the leaves, inactivate the activity of enzymes, and cause certain chemical changes in the contents of fresh leaves, thereby forming the quality characteristics of green tea. Fixing...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the moisture content of tea leaves is difficult to detect during the low-pressure dehumidification process, and proposes a low-pressure greening machine for measuring humidity by a second-order method and a method for measuring moisture content thereof, which can perform low-pressure dehumidification and protect tea leaves. Reduces energy consumption and is able to detect tea humidity using pressure and moisture content in the extracted air during low-pressure dehumidification

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