Drum-type vacuum pulsing temperature-variable drying method and apparatus
A vacuum pulsating, drum drying technology, used in lighting and heating equipment, non-progressive dryers, drying solid materials, etc., to achieve good results, shorten drying time, and inhibit biological and chemical changes.
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Embodiment 1
[0023] Embodiment 1: Dried carrot diced with drum type vacuum pulse variable temperature drying equipment. In this embodiment, the airtight circular drum drying chamber is divided into 3 small drying chambers, such as image 3 shown.
[0024] The method of drying diced carrots with drum-type vacuum pulsation variable temperature drying equipment is as follows: ① cut a certain amount (40% of the volume of the drying chamber) into cube-shaped diced carrots (moisture content is about 90% wb) through the feed ②Set the temperature of the heating medium to 65°C, the temperature difference between the inlet and outlet of the circulating medium is 5°C, turn on the pressure pump 9, and the heating medium begins to circulate; ③Set the pulsation period of the pulsating pressure working system, that is, vacuum 0.095MPa, keep the vacuum degree for 15 minutes; change the vacuum degree to 0, keep it for 1 minute (the maintenance of the vacuum degree is controlled by the electromagnetic flow...
Embodiment 2
[0025] Embodiment 2: processing raisins with drum-type vacuum pulsation variable temperature drying equipment. In this embodiment, the airtight circular drum drying chamber is divided into 2 small drying chambers, such as figure 2 shown.
[0026]The method of processing raisins with the drum-type vacuum pulsation variable temperature drying equipment is as follows: 1. A certain amount (40% of the volume of the drying chamber) of grapes with ears (moisture content is about 83%wb) will be passed through the feed ②Set the initial temperature of the heating medium to 40°C, the temperature difference between the inlet and outlet of the circulating medium is 5°C, turn on the pressure pump 9, and the heating medium starts to circulate; ③Set the pulsation period of the pulsating pressure working system, that is Vacuum degree 0.075MPa, keep this vacuum degree for 10 minutes; change vacuum degree to 0, keep for 10 minutes (the maintenance of vacuum degree is controlled by the electrom...
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