CN202281206U - Boiler smokeless combustion device - Google Patents

Abstract

The utility model discloses a smokeless combustion device for a boiler, which comprises a furnace body, a blower fan and an air inlet pipe. An annular cavity, and a bottom plate is arranged at the bottom, a refractory layer is arranged on the upper surface of the inner bottom plate of the furnace, and a ventilation hole is also arranged on the side of the furnace, the fan is fixedly connected to one end of the ventilation pipe through a flange, and the other end of the ventilation pipe is connected to the furnace body The cavities are connected. The utility model has simple and reasonable structure, low cost and easy maintenance. The furnace body is a double-layer structure, and a cavity is provided between the inner and outer layers, so that the heat transfer speed of the furnace body is fast, the combustion is complete, and the flame temperature is high. , Significantly improved the thermal efficiency of the boiler, the hearth of the furnace body is equipped with ventilation holes, the ventilation effect is good, the gas production rate is increased, and the energy consumption is reduced. The furnace body is equipped with a refractory layer, and the heating temperature is high, which is safe and reliable.

Description

A boiler smokeless combustion device

technical field

The utility model relates to a boiler, in particular to a boiler smokeless combustion device.

Background technique

Boiler is a kind of energy conversion equipment. It uses the heat energy of fuel or other energy sources to heat water into hot water or steam. After conversion by the boiler, steam, high-temperature water or organic heat carrier with a certain amount of heat energy is output to the outside. The combustion methods of existing energy-consuming devices such as small boilers and household stoves are basically to supply untreated preheated air from the bottom of the fuel or the bottom of the furnace so that the fuel can be continuously burned. During the combustion process, due to the cold air The continuous entry of hot air and the continuous discharge of hot air cause the temperature of the combustion center in the furnace to drop, resulting in a decrease in combustion speed and insufficient decomposition of fuel. It is discharged into the atmosphere, causing a large amount of black or blue smoke, which will lead to low combustion efficiency and great waste of thermal efficiency. In recent years, people have also designed some new smokeless flame-throwing stoves, but their structures are more complicated and the cost is higher; when the flame-throwing stove is ignited by a cold stove, it still emits smoke for a long period of time. Only when the temperature of the whole furnace is high can it achieve a smokeless state, and the preheating time of the stove is longer. At the same time, when the existing boiler burns, a certain amount of tar will be produced, which is directly discharged indoors, causing pollution to the environment. .

Contents of the invention

The purpose of this utility model is to provide a boiler smokeless combustion device with simple structure, easy manufacture, convenient maintenance and high combustion efficiency, which can effectively solve the above problems.

In order to achieve the above object, the technical scheme adopted by the utility model is as follows: the boiler smokeless combustion device of the utility model includes a furnace body, a fan and an air inlet pipe, the furnace body is an inner and outer double-layer structure, and the outer layer is a body, the inner layer is the furnace, an annular cavity is provided between the inner and outer layers, and a bottom plate is provided at the bottom, a refractory layer is provided on the upper surface of the inner bottom plate of the furnace, and ventilation holes are provided on the side of the furnace, and the fan passes through the flange and One end of the ventilation pipe is fixedly connected, and the other end of the ventilation pipe communicates with the cavity of the furnace body.

Preferably, the shell is cylindrical, the furnace is in the shape of a truncated cone with a small top and a large bottom, and the furnace is integrally formed with the shell through an annular top cover.

Preferably, the ventilation holes are arranged on the same horizontal line and evenly distributed.

Preferably, the refractory layer is a ceramic layer.

Compared with the prior art, the utility model has the advantages of simple and reasonable structure, low cost and easy maintenance. The furnace body is a double-layer structure, and a cavity is provided between the inner and outer layers to make the furnace body heat transfer. The speed is fast, the combustion is complete, and it reaches a smokeless state. The flame temperature is high, which significantly improves the thermal efficiency of the boiler. Layer, high heating temperature, safe and reliable.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the figure: 1. Furnace body; 2. Cavity; 3. Fan; 4. Bottom plate; 5. Refractory layer; 6. Ventilation pipe; 7. Flange; 8. Ventilation hole.

Detailed ways

The utility model will be further described below in conjunction with accompanying drawing.

Referring to Fig. 1, the boiler smokeless combustion device of the present utility model comprises furnace body 1, blower fan 3 and air inlet pipe, and described furnace body 1 is inner and outer double-layer structure, outer layer is shell, inner layer is furnace, inner and outer layer There is an annular cavity 2 between them, and a bottom plate 4 is arranged at the bottom, a refractory layer 5 is arranged on the upper surface of the inner bottom plate 4 of the furnace, and a ventilation hole 8 is arranged on the side of the furnace, and the fan 3 is connected with the ventilation pipe through the flange 7. 6. One end is fixedly connected. The other end of the ventilation pipe 6 communicates with the cavity 2 of the furnace body 1. The shell is cylindrical. , the ventilation holes 8 are arranged on the same horizontal line and evenly distributed, and the refractory layer 5 is a ceramic layer.

The air required for boiler combustion is supplied by the air inlet. The size and height of the air inlet will be determined according to the size of the boiler and the type of fuel. The air inlet should face the combustion reaction center of the furnace. After the air is pressurized by the fan 3, it will be The air inlet pipe flows to the cavity 2 of the furnace body 1, absorbs heat in the cavity 2, and after preheating, sprays it into the hot combustion center in the furnace through the ventilation hole 8, and a part of the air that enters is mixed with the combustible gas generated in the furnace , complete combustion, and the other part is sprayed onto the hot fuel surface under the pressure of the fan 3, and directly participates in the gasification reaction, so that it has a continuous stream of combustible gas. The refractory layer 5 in the furnace is conducive to improving the furnace The temperature provides favorable conditions for combustion. The combustion volume of the combustion device is adjustable. When the air volume is increased, the air volume reaching the fuel layer increases, the combustible gas produced also increases, and the combustion speed is accelerated; vice versa.

Claims (4)

1. A smokeless combustion device for a boiler, comprising a body of furnace, a blower fan and an air inlet pipe, characterized in that: the body of furnace is an inner and outer double-layer structure, the outer layer is a shell, the inner layer is a furnace, and the inner and outer layers are arranged There is an annular cavity, and a bottom plate is set at the bottom, a refractory layer is set on the upper surface of the inner bottom plate of the furnace, and a ventilation hole is also set on the side of the furnace. The fan is fixedly connected to one end of the ventilation pipe through a flange, and the other end of the ventilation pipe is connected to the furnace. The cavities of the body are connected. 2. A boiler smokeless combustion device according to claim 1, characterized in that: the shell is cylindrical, the furnace is in the shape of a circular frustum with a small top and a large bottom, and the furnace is integrated with the shell through an annular top cover forming. 3. A boiler smokeless combustion device according to claim 1, characterized in that: said ventilation holes are arranged on the same horizontal line and evenly distributed. 4. A boiler smokeless combustion device according to claim 1, characterized in that: the refractory layer is a ceramic layer.

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