Heat pump tail heat recovery penetrating countercurrent fluidized dryer

Abstract

The invention discloses a thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine. According to the thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine, a material seal screw feeder is arranged on the upper portion of a drying tower, and a closed-air aspirator discharging machine is arranged at the bottom of the drying tower; the upper portion of the drying tower is connected with an induced draft fan, and the induced draft fan is connected with an evaporator of a thermal pump system through a cyclone dust collector, and then carries out evacuation; the evaporator of the thermal 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 lower portion of the drying tower through the condenser; an impeller of the induced draft fan is provided with a structure with blades in a hollow reverse drop shape; and the shape contour line of the induced draft fan is an involute. According to the thermal pump type tail heat recycling reverse flowing penetrating fluidized drying machine, through the arrangement of sieve mesh cone covers, sieve mesh cone disks, discharging pipes, a telescopic vibration transmission shaft and cone stoppers, penetration, reverse flowing, boiling and fluidized drying are tactfully and perfectly conducted on materials; the classic boiling reverse flowing drying mode is completely surpassed, the energy saving effect is better, the drying quality is higher, and power consumption of the draught fan is lower; and the thermal pump type tail heat recycle is particularly suitable for recycling heat of tail gas at a low temperature.

Description

technical field [0001] The invention relates to a dryer, in particular to a heat pump tail heat recovery penetrating countercurrent fluidization dryer in which the 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 penetrating countercurrent fluidized 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 dryin...

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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