Turbulent flow and rotational flow negative pressure drying machine

Abstract

The invention discloses a turbulent flow and rotational flow negative pressure drying machine which comprises a machine base. A turbulent flow section and a rotational flow section which communicate with each other are fixed to the machine base. The turbulent flow section comprises a cavity, and a hot-blast air inlet is formed in the bottom end of the cavity. A damp material inlet is formed abovethe hot-blast air inlet. A hot-blast air outlet is formed in the upper end of the cavity. A cutter capable of rotating at a high speed is arranged at the inner bottom of the cavity. The rotational flow section comprises an inverted cone cavity, and an air inlet connected with the hot-blast air outlet is formed in the top of the inverted cone cavity. An air outlet tube is connected into the inverted cone cavity. The turbulent flow and rotational flow negative pressure drying machine is good in drying effect and high in drying efficiency, and energy consumption is greatly reduced; and moreover,the whole system is clean, sanitary and free of stinks, and the drying problem of materials which cannot be dewatered easily is solved.

Description

technical field [0001] The invention relates to drying equipment, in particular to a turbulent-flow swirl negative-pressure dryer. Background technique [0002] In the field of drying, wet materials are mainly dried by hot cyclones. When encountering some materials that are difficult to dehydrate, such as: heat-sensitive sludge containing biological intracellular water, there are mainly the following problems when drying with existing drying equipment: 1) A large amount of water is stored in the cells, and the existing drying technology basically fails to remove the water fundamentally, and it is difficult to achieve the drying effect; 2) Due to the heat sensitivity of the material, it cannot be evaporated simply by increasing the drying temperature This moisture has been a technical problem that has plagued relevant practitioners; 3) In the process of drying materials in common drying equipment, due to the high internal pressure, there is often odor emission and dust partic...

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Problems solved by technology

[0002] In the field of drying, wet materials are mainly dried by hot cyclones. When encountering some materials that are difficult to dehydrate, such as: heat-sensitive sludge containing biological intracellular water, there are mainly the following problems when drying with existing drying equipment: 1) A large amount of water is stored in the cells, and the existing drying technology basically fails to remove the water fundamentally, and it is difficult to achieve the drying effect; 2) Due to the heat sensitivity of the material, it cannot be evaporated simply by increasing the drying temperature This moisture has been a technical problem that has plagued relevant practitioners; 3) In the process of drying materials in common drying equipment, due to the high internal pressure, there is often odor emission and dust particles overflowing, not only difficult to meet environmental protection indicators, but also The phenomenon of disturbing the residents is serious; 4) In order to reduce the final moisture content of the material as much as possible, the existing drying technology will make the drying process long enough, which also increases the energy consumption and cost of the treatment

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