A heat pump tail heat utilization penetrating countercurrent dryer

Abstract

The invention discloses a heat pump type drying machine capable of utilizing waste heat and achieving penetrating countercurrent. An air draft hood and an air inlet hood are arranged at the two ends of a drying machine case body respectively, the air draft 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 is emptied; the evaporator of the heat pump system is connected with a host through a refrigerant pipe, and the host is connected with a condenser through the refrigerant pipe; the air outlet end of an air blower is connected with the air inlet hood through a condenser; and multiple soft partition plates which are vertically arranged and divide an upper machine case body and a lower machine case body into multiple units are arranged in the drying machine case body. According to the heat pump type drying machine capable of utilizing the waste heat and achieving the penetrating countercurrent, by means of the induced draft fan, the partition plates and axial fans, the penetrating countercurrent drying is exquisitely achieved, and the work efficiency is improved; the heat pump type waste heat utilization is suitable for heat recovery of tail gas with lower temperature and is particularly efficient, convenient and rapid; and by means of the structure that blades are in a hollow and wedged shape and the backing plate is in a disc shape, real-time cleaning of dust on an impeller is achieved, the impeller strength of the induced draft fan is increased, the stability is enhanced, safety accidents caused by dust accumulation is effectively eradicated, and the application prospect is wide.

Description

technical field [0001] The invention relates to a dryer, in particular to a heat pump tail heat utilization penetrating countercurrent dryer 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 likely to utilize tail heat due to the lower temperature of exhaust gas. 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 efficie...

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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