A heat pump type tail heat recovery penetrating countercurrent dryer

Abstract

The invention discloses a heat pump type tail heat recycling through counterflow drying machine. An air draft hood and an air inlet hood are respectively arranged at the two ends of a drying machine box body. The air draft hood is connected with an induced draft fan. The induced draft fan is connected with an evaporator of a heat pump system through a cyclone dust remover and is then emptied. The evaporator of the heat pump system is connected with a main machine through a cold medium pipe, and the main machine is connected with a condenser through the cold medium pipe. The air outlet end of an air blower is connected with the air inlet hood through the condenser. A plurality of soft baffles vertically distributed are arranged in the drying machine box body so as to divide an upper box body and a lower box body into a plurality of units. Through type counterflow drying is skillfully realized through the induced draft fan, the soft baffles and an axial fan, so that the work efficiency is improved. Heat pump type tail heat recycling is suitable for recycling low-temperature heat from exhaust gas and is particularly efficient and convenient. Blades are in the shape of a hollow reverse water droplet, and a back plate adopts a patelliform structure, so that dust on the impeller is cleared in real time, the impeller strength of the fan is increased, the stability is enhanced, and safety accidents caused by dust accumulation are effectively avoided. The application prospect is wide.

Description

technical field [0001] The invention relates to a drying machine, in particular to a heat pump tail heat recovery penetrating countercurrent drying machine in which a fan does not accumulate dust. Background technique [0002] People generally refer to drying with a drying temperature below 60 degrees Celsius as low-temperature drying. Low-temperature drying is widely used in the drying of heat-sensitive materials such as crop seeds, Chinese medicinal materials, and biological products. Due to its mature technology, strong adaptability, low operating cost and high reliability, hot air dryer is still one of the first choice equipment for low temperature drying. Low-temperature drying is less easy to recover tail heat due to the lower exhaust temperature. If the penetration and countercurrent drying of materials can be realized in the hot-air low-temperature drying process, and the tail heat can be effectively recovered, it will be of great significance for improving drying e...

AI Technical Summary

Problems solved by technology

Once part of the hardened dust is shaken off, it will immediately leave the dynamic rotation balance of the induced draft fan, and then generate strong vibration, which may cause serious personnel and equipment safety accidents

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