Material storage and feeding method of screw forward and backward screw type biomass boiler

Abstract

The invention relates to a biomass boiler material storing and feeding method with screw rods pushed forwards and then rotated backwards. According to the method, the screw rods rotate, make linear motion and wait with time delayed intermittently and alternately for work, and raw materials are conveyed for a biomass boiler stably and continuously. The set of conical screw rods are arranged at the bottom of a raw material bin, the screw rods are connected with a moving trolley outside the raw material bin, the moving trolley drives the conical screw rods to move forwards to make linear motion so that the raw materials can be pushed out of the raw material bin and fed into the boiler, a hydraulic rotation motor drives the screw rods to make rotating motion, the screw rods move back and reset when rotating, preparation is made for moving forwards in the feeding process, and the conical screw rods are arranged on screw rod running guide grooves at the bottom of the raw material bin and can bear loads. The biomass boiler material storing and feeding method with the screw rods pushed forwards and then rotated backwards totally achieves the storage function of the raw material bin, thoroughly ensures that the raw materials are conveyed to the boiler stably and continuously and makes the raw materials capable of sealing a feed inlet of the boiler perfectly, the structure is simple and compact, stress design is reasonable, and energy and electricity conservation is remarkable.

Description

Technical field: [0001] The invention is a method for storing material in front of a biomass boiler furnace and quantitatively transporting fuel by using the screw rod to push forward and rotate backward. The invention can be widely applied to biomass boilers that use various types of biomass as raw materials. Through the way that the screw is pushed forward and rotated when it is retreated, the raw material warehouse in front of the furnace can truly realize the reliable, continuous and controllable storage of raw materials, and at the same time it can withstand The raw material weight of the full warehouse can stably transport raw materials to the boiler, and the raw material transport volume can be controlled at will, so as to realize the raw material storage and quantitative transport functions of the raw material warehouse in front of the furnace. For the stable and safe operation of the biomass boiler, it solves a major problem of controlling the feeding of raw materials...

AI Technical Summary

Problems solved by technology

[0003] At present, there is no mature method for the raw material warehouse in front of the biomass boiler that has been put into production in China. Unable to reliably and continuously controllably deliver raw materials to the boiler

Since the raw material warehouse in front of the furnace does not have a suitable conveying mechanism and cannot bear the weight of the raw material, the raw material warehouse in front of the straw boiler furnace cannot be loaded normally, let alone be full. Therefore, the raw material storage function and quantitative delivery function of the raw material warehouse in front of the furnace cannot be realized. The combustion conditions of the boiler cannot be adjusted, resulting in extremely unstable combustion of the boiler, or even fire failure, and frequent large fluctuations in steam pressure

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