Hollow shaft structure of multi-layer furnace as well as dismounting tool and dismounting method for rabble arm and rabble teeth

Abstract

The invention discloses a hollow shaft structure of a multi-layer furnace as well as a dismounting tool and a dismounting method for a rabble arm and rabble teeth. The hollow shaft structure comprises a hollow shaft, the rabble arm and the rabble teeth, and further comprises a variable-frequency speed regulating motor, a speed reducer, a small bevel gear and a large bevel gear; wherein the rabble arm is connected with the hollow shaft through rabble arm pins; the rabble teeth are mounted on a slide path on the bottom of the rabble arm, and are located by rabble teeth pins on the end part of the rabble arm; the bottom shaft of the hollow shaft is fixedly connected with the large bevel gear, and the large bevel gear is mutually engaged with the small bevel gear; and the small bevel gear is connected with a drive shaft of the variable-frequency speed regulating motor through the speed reducer. Compared with the prior art, the hollow shaft structure has the beneficial effects that: firstly, the rabble arm and the rabble teeth are more convenient and quicker to maintain and replace through key equipment of the multi-layer furnace, so that production efficiency is improved; and secondly, the drive device is compact in structure, so that space is saved, and a rotation speed regulating range is great; and thirdly, the hollow shaft structure is suitable for incineration of various sludge garbage.

Description

technical field [0001] The invention relates to the field of multilayer furnaces, in particular to a hollow shaft structure of a multilayer furnace and a dismantling tool and method for rake teeth of a rake arm. Background technique [0002] The multi-layer furnace is used to incinerate urban waste. There is no strict classification of waste in my country. The waste contains high moisture and complex components, so the calorific value is very low. The multi-layer furnace is suitable for treating sludge with high moisture content and low calorific value. Rubbish. The furnace body of the multi-layer furnace is equipped with a multi-layer hearth, which is divided into drying, preheating, roasting and cooling zones from top to bottom. Driven by the driving device, the vertical hollow shaft in the hearth center drives the rake arms and teeth of each layer of hearth to rotate. Garbage is fed from the top of the furnace. Due to the different orientations of the odd and even hearth...

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Problems solved by technology

[0003] There are some unreasonable places in the existing multi-layer furnace technology: the capacity of the hearth to handle the amount of material is low; the hollow shaft works at high temperature and is cooled by ventilation, the effect is not ideal, the strength of the tube wall is not enough, and the service life is short There are many rake teeth on the rake arms of odd and even numbered hearths. Due to the continuous raking of the furnace material at a certain temperature, the rake teeth are easily damaged, difficult to maintain, and labor-intensive; the drive device is equipped with an adjustable-speed electromagnetic asynchronous The motor can adjust the speed by changing the diameter of the pulley, and the adjustment range is small; the structure is complex, maintenance is difficult, the thermal efficiency is low, the flue gas from the furnace contains more dust, the environment is polluted, and the energy saving and environmental protection are poor. These problems have caused the equipment to be gradually replaced by the suspension furnace , fluidized furnace, etc., so improving its internal structure, reducing the labor intensity of workers, enabling it to be operated and maintained conveniently and quickly, and increasing the service life of internal key equipment has become the current trend

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