Heat pump tail heat recovery penetrating countercurrent dryer

Abstract

The invention discloses a heat pump type tail heat recovery penetration counter flow dryer. A draught hood and an air inlet cover are arranged at the two ends of a box of the dryer respectively, the draught hood is connected with an induced draft fan, and the induced draft fan is connected with an evaporator of a heat pump system through a cyclone dust collector and then emptied. The evaporator of the heat pump system is connected with a main machine through a refrigerant pipe, and the main machine is connected with a condenser through a refrigerant pipe. The air outlet end of an air blower is connected with the air inlet cover through the condenser. A plurality of vertically-arranged flexible separation plates are arranged in the box of the dryer and divide an upper case body and a lower case body into a plurality of units. Through the induced draft fan, the flexible separation plates and axial fans, penetration type counter flow drying is ingeniously achieved, and work efficiency is improved. Heat pump type tail heat recovery is suitable for heat recovery of low-temperature tail gas, and is particularly efficient and convenient. Through the structure that blades are in a hollow inverted drop shape, dust on impellers is cleaned away in real time, the impeller strength of the fan is increased, stability is increased, safety accidents caused by dust accumulation are effectively eradicated, and the application prospect is wide.

Description

Technical field [0001] The invention relates to a dryer, which specifically guides a heat pump type tail heat recovery penetrating countercurrent dryer with no dust accumulation on the fan. Background technique [0002] People generally turn drying with a drying temperature below 60 degrees Celsius into 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. Hot-air dryer is still one of the preferred equipment for low temperature drying due to its mature technology, strong adaptability, low operating cost and strong reliability. Low-temperature drying is more difficult to recover the tail heat due to the lower exhaust temperature. If the material can be penetrated and countercurrently dried in the hot-air low-temperature drying process, and the tail heat can be effectively recovered, it will be of particular significance for improving drying efficiency and r...

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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