Heat-pump type exhaust heat utilization penetration counter-flow fluidized drying machine

Abstract

The invention discloses a heat-pump type exhaust heat utilization penetration counter-flow fluidized drying machine. A material seal screw feeder is arranged at the upper part of a drying tower, and an air-lock valve discharging machine is arranged at the bottom of the drying tower; the upper part of the drying tower is connected to an induced draft fan; the induced draft fan is connected to an evaporator of a heat pump system through a cyclone dust collector and then exhausts; the evaporator of the heat pump system is connected with a main machine through a refrigerant pipe; the main machine is connected with a condenser through the refrigerant pipe; the air outlet end of an air blower is connected with the lower part of the drying tower through the condenser; an impeller of the induced draft fan is provided with blades, each blade takes the shape a hollow wedge and each back plate adopts a dish-shaped structure; and the shape contour line of the induced draft fan is an involute. According to the invention, by arranging sieve pore conical covers, sieve pore conical disks, material falling pipes, a stretching vibration transmission shaft and conical plugs, penetration, counter-flow, boiling and fluidized drying of materials can be realized skillfully and perfectly, a classical boiling reflux drying mode is completely overtaken, more energy conservation, higher drying quality and lower power consumption of the air blower are realized; and the heat-pump type exhaust heat utilization is specially suitable for recovery of heat from exhaust gas with relatively low temperature.

Description

technical field [0001] The invention relates to a dryer, in particular to a heat pump tail heat utilization penetrating countercurrent fluidization 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 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 impro...

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

Images