Exhaust heat drying rotary kiln with induced draft fan convenient to disassemble

Abstract

The invention discloses an exhaust heat drying rotary kiln with an induced draft fan convenient to disassemble. The rotary kiln is obliquely arranged and internally provided with a combustor. The high end of the rotary kiln is bidirectionally connected with one end of a drying machine through a discharging pipe and an air pipe. A conveyor belt is arranged in the drying machine and connected with the discharging pipe. A closed-air aspirator is arranged at the other end of the drying machining. A protruding refractory slab is arranged in the rotary kiln. The drying machine is connected with the induced draft fan through a cyclone dust collector. The closed-air aspirator is connected with the portion below the cyclone dust collector. A dust collection cylinder is arranged below the closed-air aspirator. Dust can be cleaned in time through an impeller of the induced draft fan under the centrifugal force action. By the adoption of the exhaust heat drying rotary kiln with the induced draft fan convenient to disassemble, thermal efficiency is high; besides, 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 exhaust heat drying rotary kiln 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 rotary kiln, in particular to a tail heat drying rotary kiln in which a fan does not accumulate dust and is easy to disassemble. Background technique [0002] Due to its strong adaptability, low operating cost and high reliability, the rotary kiln is one of the main preferred equipment for mineral batching, pelletizing, reaction and drying, and is especially suitable for the processing and burning of vanadium ore. During the working process, the rotary kiln needs to consume fuel to maintain a suitable high temperature in the kiln. Therefore, the exhaust gas discharged from the rotary kiln contains a lot of heat energy and dust. It is necessary to purify the exhaust gas and recover the exhaust heat to achieve energy saving and emission reduction. [0003] The rotary kiln is generally cylindrical, so the heat transfer area between the material and the kiln body is very small, resulting in low thermal efficiency. Therefore, des...

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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