Energy-saving boiler

Abstract

The invention discloses an energy-saving boiler, and belongs to the technical field of boilers. The energy-saving boiler comprises a feeding blower device and a heating device. The heating device comprises a heating furnace and a pre-heating furnace. The feeding blower device comprises a feeding hinged wheel and a blower system, wherein the feeding hinged wheel is used with a stock bin in a matched mode. A discharging pipe is placed at one end of the feeding hinged wheel, and a fuel blast pipe is arranged on the discharging pipe which is connected with a fuel inlet in a matching mode. A water inlet is formed in the lower portion of a pre-heating furnace body and is communicated with a cold water sleeve. Fuel can be fully mixed with oxygen before entering a boiler furnace through the arrangement of a material feeding device, and the burn-off rate of the fuel is improved. Cold water is heated in advance through the pre-heating furnace body, the reserved time of exhausted gas is prolonged, thermal conversion efficiency is improved, resources are saved, and heating time is shortened. A smoke journey is lengthened through heating pipes which are connected in series, the thermal energy is fully absorbed by the water, and the circulation of the water in the boiler water sleeve is accelerated. Meanwhile, enough time is reserved for the ash in smoke to fall down into an ash discharging chamber, air pollution is reduced, energy is saved, and environment is protected.

Description

technical field [0001] The invention belongs to the technical field of boilers, and in particular relates to an energy-saving boiler. Background technique [0002] Boilers are indispensable equipment for heating and heating in civil or industrial use. Traditional boilers only heat the water in the interlayer by directly heating the inner wall of the boiler. The fuel usually uses coal, gas, oil and other mineral energy. The supply of non-renewable fossil fuels is shrinking sharply, and their supply is becoming increasingly tight, while fuel prices are also rising. Adopt the above-mentioned fuel to have the defect of high pollution and waste of energy in addition. Biomass fuel, as an alternative energy source from renewable resources, can improve the environment and reduce CO in the atmosphere 2 content and reducing the "greenhouse effect" are of great benefit, and are gradually being utilized. As a large agricultural country, our country is rich in biomass resources. Accord...

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Problems solved by technology

[0003] At present, most of the boilers are single-body structure, and the water is stored in the outer cavity of the combustion chamber. The exhaust gas passage is relatively short, and the residence time is relatively short, resulting in a large amount of heat that is not fully utilized, and is discharged through the exhaust port, which is not well utilized. The thermal energy in the exhaust gas causes a lot of thermal energy waste in the exhaust gas, which makes the temperature rise of the water in the furnace slower, and a large amount of heat energy is taken away by waste and dust, which wastes energy, and because the exhaust gas and dust after burning coal and other fuels are directly It is discharged into the atmosphere through an external chimney, which greatly pollutes the environment and wastes resources

Today, when energy conservation and emission reduction are advocated, people have carried out various modifications to boilers, but there are problems such as insufficient combustion of fuel, insufficient use of heat energy, and serious air pollution.

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