Paste drying equipment and method

Abstract

The invention provides paste drying equipment and a paste drying method. The paste drying equipment comprises a drying box, a first vacuum pump, a drying tray, an air inlet pipeline, a first valve and a discharging pipeline, wherein the drying tray comprises a first plate, a second plate and a supporting component; the first plate and the second plate form an accommodating space; a first through hole and a second through hole are formed on two sides of the drying tray and are communicated with the accommodating space; the air inlet pipeline penetrates the drying box and is in sealed butt joint with the first through hole so as to input steam into the accommodating space; the first valve is arranged on the air inlet pipeline outside the drying box; the discharging pipeline penetrates the drying box and is in sealed butt joint with second through hole; the discharging pipeline comprises a first branch pipe, a second branch pipe, a second vacuum pump, a second valve, a third valve and a check valve; the second vacuum pump is connected with the first branch pipe; the second valve is arranged on the first branch pipe between the outer side of the drying box and the second vacuum pump and is used for regulating the air pressure of the accommodating space; the first branch pipe is communicated with the second branch pipe; and the third valve is arranged between the drying box and the check valve and is used for controlling the opening and closing of the second branch pipe. The paste drying equipment is particularly applicable to drying of materials which deteriorate easily at a high temperature and can dry the materials at a relatively low temperature more quickly and more uniformly, and the energy can be saved.

Description

technical field [0001] The invention relates to a drying device and a drying method thereof, in particular to a paste drying device and a drying method thereof. Background technique [0002] At present, for food deep processing, it is a routine procedure to dry the paste to reduce its water content. In the prior art, one method of drying is to use hot air to dry. The implementation step is often to put the paste in a drying box, and then blow hot air into the drying box to dry the paste. When the paste is dried in this way, although a certain drying effect can be achieved, there are certain defects. Because the hot air blows for a long time, the water on the surface of the paste evaporates quickly, so a hard shell will be formed on the surface, which hinders the evaporation of the internal water. Another method to achieve drying is to adopt vacuum drying. The steps of implementation are to place the paste to be dried in a closed drying box, and use a vacuum pump to evacuat...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, when hot air is used to dry the paste, a hard shell will be formed on the surface of the paste to prevent further drying inside, and when vacuum drying is used to dry the paste, due to the thin gas Poor heat conduction causes the defect of uneven heating of the paste, the invention provides a drying equipment and drying method for the paste

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