Biomass boiler drying system

Abstract

The invention discloses a biomass boiler drying system. A high-temperature tail gas pipe is connected with an interlayer of a tubular heat exchanger and an interlayer of a cyclone in a tangential mode, after cyclone dedusting is conducted, dust is discharged out of a cone base through an air-lock device, and tail gas penetrates through a tube nest after being evenly dispersed and is discharged out through an upper conical hopper by means of a draught fan; a drying room is provided with a condensate water backflow pipe to recycle condensate water; a coupling of the draught fan, a fan shaft and a fan impeller are all assembled in a threaded mode, and the thread screw direction means the automatic locking direction along with work and the load; the fan impeller is in threaded rigid connection with the fan shaft after pressing a copper lead twisting composite pad; the coupling and the other end of the fan shaft are also in rigid connection through a clamp part. By means of the biomass boiler drying system, heat recovery and purification treatment of boiler tail gas are achieved, most importantly, the disassembling and assembling technology of a boiler draught fan is greatly improved, the problem that the boiler draught fan is automatically locked continuously under the action of the load and not easy to detach in the screw assembling process can be effectively solved, and the biomass boiler drying system is particularly suitable for fast and convenient detachment of a large boiler draught fan which is locked in a threaded mode.

Description

technical field [0001] The invention relates to a drying system for a biomass boiler which is convenient for dismantling and maintenance of an induced draft fan. Background technique [0002] The biomass boiler drying system mainly uses biomass such as corn stalks as fuel. Since biomass fuel is widely available in rural areas and is easy to obtain, and rural areas often need to dry agricultural products, the biomass boiler drying system is used in rural areas. more extensive. [0003] The boiler is the main equipment of the biomass boiler drying system. The long-term operation of the fan is inseparable from the air supply and dust removal of the boiler. Therefore, the fan is the key equipment of the boiler. The larger the tonnage of the boiler, the more the fan used. Large, the structure of ordinary fans is generally that one end of the fan shaft is the fan impeller, and the other end is the power input end of the motor, often a coupling. Since the fans in the boiler gener...

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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