Heat pump type penetrating and inverse-flow fluidized drying machine with exhaust heat recovery function

Abstract

The invention discloses a heat pump type penetrating and inverse-flow fluidized drying machine with the exhaust heat recovery function. 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. The induced draft fan is connected with an evaporator of a heat pump system through a cyclone dedusting device for evacuation. The air outflow end of an air blower is connected with the lower portion of the drying tower through a condenser. Blades of an impeller of the induced draft fan are arranged symmetrical about the center of an impeller shaft in the radial direction in a radial manner, dust can be cleared up in time through centrifugal force, and safety accidents are avoided. By the adoption of the heat pump type penetrating and inverse-flow fluidized drying machine with the exhaust heat recovery function, drying efficiency is improved, and energy saving and emission reduction are achieved; and more importantly, the disassembly technology of the induced draft fan is improved greatly, so that pressure applied to the shaft shoulder end face of a screw by components similar to a nut component can be eliminated easily when the induced draft fan is disassembled, and the problem that the induced draft fan is locked continuously and automatically and cannot be disassembled easily under the load action due to threaded assembly is solved effectively; and the heat pump type penetrating and inverse-flow fluidized drying machine with the exhaust heat recovery function is especially suitable for convenient and fast disassembly of a large-scale fan which is locked in a threaded manner, and the effect is especially remarkable.

Description

technical field [0001] The invention relates to a dryer, in particular to a heat pump tail heat recovery penetrating countercurrent fluidization dryer which does not accumulate dust in a fan and is easy to disassemble and repair. 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 gr...

AI Technical Summary

Problems solved by technology

In the actual assembly of shafts and holes with transmission threads, in order to achieve large load-bearing functions, the size of the threaded shafts and matching nut-like components are relatively large, and it is often easy and convenient to screw in during assembly, and It can realize the automatic and continuous locking of the bearing capacity during use, so it is very reliable, but when it is disassembled, the assembly is often very tight, and disassembly is very difficult. It is particularly important to realize simple and easy disassembly under this condition

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