A low-pressure greening machine and humidity measuring method for indirectly measuring humidity and air pressure
A measurement method and technology of greening machine, applied to the water content of materials, tea treatment before extraction, etc., can solve the problems of difficult detection of water content, achieve the effects of reducing energy consumption, avoiding damage, and reducing temperature requirements
Active Publication Date: 2022-06-17
ZHEJIANG UNIV OF TECH
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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 de-greening machine for indirect measurement of humidity and air pressure and its humidity measurement method, which can perform low-pressure dehumidification and protect the tea leaves. energy consumption, and can use the pressure and the moisture content in the extracted air to detect the humidity of the tea during the low-pressure dehumidification process
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[0056] The present invention will be further described below in conjunction with the accompanying drawings:
[0057] like Figures 1~8 Shown, a kind of low-pressure fixing machine that indirectly measures humidity and air pressure, comprises low-pressure fixing machine, thermometer 7, low-pressure air extraction pipe 8 and hygrometer, and described thermometer 7 is connected on the low-pressure fixing machine and detects the temperature inside the low-pressure fixing machine, and the low-pressure pumping One end of the gas pipe 8 is connected inside the low pressure fixing machine, the other end of the low pressure gas extraction pipe 8 is connected to the gas inlet of the condenser 30 through the shut-off valve 29, and the hygrometer is arranged at the outlet of the other end of the low pressure gas extraction pipe 8.
[0058] The low pressure fixing machine includes a closed casing 5 , a low pressure dehumidification tank 6 , a feeding bin 1 , a microwave heating device 16 ,...
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The invention discloses a low-pressure de-enzyming machine for indirect measurement of humidity and air pressure and a humidity measuring method, comprising a low-pressure de-enzyming machine, a thermometer and a hygrometer. One end is connected to the inside of the low-pressure greening machine, and the hygrometer is set at the outlet of the other end of the low-pressure exhaust pipe; the present invention adopts the principle of low-pressure dehumidification in the process of processing, that is, utilizes the relationship between evaporation temperature and pressure. The lower the temperature is, a low-pressure dehumidification tank is designed, and the low-pressure environment is realized by continuously pumping air to the external environment through the first air pump, so that the boiling point of the water in the tea decreases with the atmospheric pressure. Under a standard atmospheric pressure, whose boiling point is 100 ℃, and when the atmospheric pressure is only 0.016451Mpa, when the temperature is only 56 ℃, a large amount of moisture in the tea will be converted into water vapor, and then extracted from the first air pump.
Description
technical field [0001] The invention relates to the field of tea greening devices, in particular, to a low-pressure greening device for indirectly measuring humidity and air pressure and a humidity measurement method thereof. Background technique [0002] Green tea is currently the most important tea category 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→fixing→kneading→drying. The first process of green tea production is to kill green tea, and 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. Green tea is to take high temperature measures to dissipate the moisture in the leaves, inactivate the activity of enzymes, and make certain chemical changes in the contents of the fresh leaves, thus forming the quality characteristics of green tea. Fixing uses high temperat...
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IPC IPC(8): G01N25/56A23F3/06
CPCA23F3/06G01N25/56
Inventor 单晓杭汪佳成叶必卿李研彪张利
Owner ZHEJIANG UNIV OF TECH