Heat recovery device of tea dryer

Abstract

The invention discloses a heat recovery device of a tea dryer. The heat recovery device comprises a dryer and a heat recovery device body, wherein the dryer comprises a drying oven and a hot air generating device; the hot air generating device comprises an air blower and a boiler; the heat recovery device body is a heat exchange box; an upper tube plate and a lower tube plate are arranged inside the heat exchange box, are fixed on the inner walls of the heat exchange box through seal welding and are communicated by heat exchange tubes. The heat recovery device has the beneficial effects that in order to take full advantage of the waste heat of the exhaust air of the tea dryer, reduce the energy consumption and save cost, the initial temperature of the air entering the boiler is increased by arranging the heat recovery device at an air outlet of the drying oven and utilizing the high temperature and high humidity gas exhausted by the drying oven to preheat the cold air entering the hot air generating device, so the energy consumption can be reduced, the resources can be saved and the economic benefits of tea factories can be increased.

Description

technical field [0001] The invention relates to the field of tea processing equipment, in particular to a heat recovery device for a tea dryer. Background technique [0002] In the process of tea processing and production, it is necessary to use a dryer to dry the tea to remove the water in the tea, reduce the water content in the tea cells, reduce its activity and remove the semipermeability of the cell membrane, so as to ensure that the subsequent processing can be normal and went well. Existing dryers include inlet and outlet ports and air inlet and outlet ports, with a screen inside, the heating chamber is above the screen, and the shell of the hot air chamber is below the screen, so that tea leaves can enter the screen from the feed port. After the heating bin on the side, the hot air is sent from the air inlet into the hot air bin under the screen, and the hot air passes through the screen to dry the tea on it, and then it is discharged from the air outlet on the top ...

AI Technical Summary

Problems solved by technology

Existing dryers include inlet and outlet ports and air inlet and outlet ports, with a screen inside, the heating chamber is above the screen, and the shell of the hot air chamber is below the screen, so that tea leaves can enter the screen from the feed port. After the heating bin on the side, the hot air is sent from the air inlet into the hot air bin under the screen, and the hot air passes through the screen to dry the tea on it, and then it is discharged from the air outlet on the top of the bin. The air outlet is equipped with an exhaust fan, and the exhaust air is faster. The air discharged in this way not only contains a certain amount of water and dust, but also has a relatively high temperature. Therefore, such a direct discharge will inevitably waste heat energy resources, which is not conducive to the energy saving and consumption reduction of tea enterprises. , affecting the economic benefits of tea enterprises

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