Low-temperature vacuum drying box

Abstract

The invention discloses a low-temperature vacuum drying box which comprises a box body, a working chamber disposed inside the box body and a box door disposed outside the box body. The low-temperature vacuum drying box is characterized in that the working chamber comprises a drying plate, a first-kind drying frame for placing the drying plate, a retaining plate disposed below the top of the working chamber, a radiating coil disposed below the first-kind drying frame, a water retaining strip disposed at the bottom, close to the box door, of the working chamber, and a second-kind drying frame located below the first-kind drying frame. The low-temperature vacuum drying box has the advantages that the inner top of the working chamber is semi-elliptical, the structure with four arc corners allows temperature in the box body to be smooth and even during heating, in the meantime, steam drops generated by drying can flow from two sides into the central bottom of the box body and be pumped out by a vacuum pump via a bottom draining hole and a vacuum connecting pipe, and dryness in the box is kept all the time.

Description

technical field [0001] The invention relates to a drying device used for low-temperature drying in industries such as medicine, food, light industry, and chemical industry, in particular to a low-temperature vacuum drying oven. Background technique [0002] Low-temperature vacuum drying oven is widely used in medicine, food, light industry, chemical industry and other industries for low-temperature drying. The so-called vacuum drying is to heat and dry the dried material under vacuum conditions. , so that a vacuum state is formed in the working room, the boiling point of water is lowered, the drying speed is accelerated, a higher drying rate can be obtained at a lower temperature, the heat is fully utilized, and no impurities are mixed in the drying process, which belongs to the static vacuum Drying, so it will not cause damage to the shape of the dry material, in line with "GMP" requirements. The vacuum drying oven has the advantages of fast drying speed, low pollution, an...

AI Technical Summary

Problems solved by technology

However, the bottom layer of most current low-temperature vacuum ovens is not easy to be dried, and the vacuum return water or evaporative condensed water is easy to drip into the baking tray with materials.

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