CN202955862U - High-power, high-efficiency hot blast stove - Google Patents

Abstract

The utility model relates to a hot-blast stove, and in particular relates to a high-power and high-efficiency hot-blast stove which comprises combustion chamber(s) and a heat exchange component, wherein each combustion chamber comprises a refractory brick wall and an outer shell; the heat exchange component is arranged in a shell; the peripheries of the shell and the outer shell are respectively provided with a heat insulation layer; the heat exchange component consists of an upper face plate, a lower face plate and a heat exchange tube; the shell is provided with a flue; a first ash removal hole and a second ash removal hole are respectively formed in the two sides and the front of the flue; and an air inlet and an air outlet are respectively formed in the two sides of the shell. The hot-blast stove can be provided with the plurality of combustion chambers according to the need of actual situation, so that the single-furnace power is increased; all the combustion chambers are independently designed and used, so that the hot-blast stove not only is convenient to operate, but also realizes sufficient burning; most importantly, the uniform temperature in all the combustion chambers can be guaranteed, so that the damage is not caused; and furthermore, the flue is designed, the return stroke of high-temperature flue gas in the flue can be prolonged, and the thermal efficiency is effectively improved.

Description

High-power, high-efficiency hot blast stove

technical field

The utility model relates to a hot blast stove, in particular to a hot blast stove with high power and high thermal efficiency.

Background technique

At present, hot blast stoves generally use a single furnace. There is only one combustion chamber, and heat exchange components are installed in the combustion chamber. The volume of the combustion chamber is the key factor determining the power of a single furnace. Generally, the power of a single furnace is not very large. It is difficult to popularize and use in high-demand fields. In the past, if the hot blast stove wanted to increase the power, the method of enlarging the combustion chamber space was often adopted. The local temperature is too high, the furnace body is damaged, and even the whole body is damaged. It is also very inconvenient to operate. In addition, the current hot blast stove does not have a flue circuit. The flue gas is directly discharged from the chimney, and the flue gas itself also contains heat. In this way, direct discharge cannot make full use of the heat of the flue gas, resulting in a large heat loss.

Contents of the invention

The purpose of the utility model is to solve the shortcomings of the above-mentioned prior art, and provide a hot blast stove with a reasonable structural design and high power and high efficiency.

The utility model is achieved through the following technical solutions:

The high-power and high-efficiency hot blast stove is special in that it includes a combustion chamber 13 and a heat exchange assembly 4. The combustion chamber 13 is composed of a refractory brick wall 14 and an outer shell 23. The heat exchange assembly 4 is installed in the shell 5, and the shell 5 and the outer periphery of the shell 23 is provided with an insulating layer 16, the heat exchange assembly 4 is composed of the upper faceplate 3, the lower faceplate 8 and the heat exchange tube 17, the shell 5 is provided with a flue 1, and the two sides and the front of the flue 1 are respectively provided with The first soot removal port 2 and the second soot removal port 19, the two sides of the housing 5 are respectively provided with an air inlet 7 and an air outlet 18, and one side of the combustion chamber 13 is provided with a flue gas return chamber 20, and the combustion chamber 13 and the flue gas return flow The chambers 20 are isolated by the smoke partition wall 10, the flue gas return chamber 20 is provided with a smoke exhaust port 9, and the combustion chamber 13 is respectively provided with a feed port 12 and a slag discharge port 11;

In order to improve the power of the hot blast stove, the number of the combustion chamber 13 is one or two or more;

In order to prevent the heat exchange components from being bent and deformed under high temperature for a long time and prolong their service life, a protective layer 15 is poured on the lower faceplate 8;

In order to increase the flow of the heat-exchanged gas and improve the heat exchange efficiency, the shell 5 is welded with a windshield 6;

In order to increase the flue gas flow and improve the heat utilization rate of the flue gas, a first smoke baffle 21 is arranged in the flue 1 , and a second smoke baffle 22 is arranged in the flue gas return chamber 20 .

The high-power and high-efficiency hot air stove of the utility model can be equipped with multiple combustion chambers according to actual occasions, and the power of a single furnace can be increased. Each combustion chamber is independently designed and used, which is not only easy to operate, but also can achieve full combustion. The most important thing is to ensure that the temperature in each combustion chamber is uniform without causing damage. In addition, the designed flue also prolongs the return journey of high-temperature flue gas, effectively improving thermal efficiency.

Description of drawings

Fig. 1: the front view of the high-power, high-efficiency hot blast stove in Example 1 of the utility model;

Figure 2: Front view of the high-power, high-efficiency hot blast stove in Example 2 of the utility model

In the figure: 1. flue, 2. first dust removal port, 3. upper flower plate, 4. heat exchange component, 5. shell, 6. windshield, 7. air inlet, 8. air outlet, 9. Smoke exhaust port, 10, smoke partition wall, 11, slag outlet, 12, material filling port, 13, combustion chamber, 14, refractory brick wall, 15, protective layer, 16, insulation layer, 17, heat exchange tube, 18 , the air outlet, 19, the second dust removal port, 20, the flue gas return chamber, 21, the first smoke baffle, 22, the second smoke baffle, 23, the shell.

Detailed ways

The specific embodiments of the present utility model are given below with reference to the accompanying drawings, which are used to further describe the structure of the present utility model in detail.

Example 1

The high-power, high-efficiency hot blast stove of the present embodiment, with reference to Fig. 1, comprises combustion chamber 13 and heat exchanging assembly 4, is provided with a combustion chamber 13, and combustion chamber 13 is made of refractory brick wall 14 and shell 23, and heat exchanging assembly 4 Installed in the shell 5, the outer periphery of the shell 5 and the shell 23 is provided with an insulating layer 16, the heat exchange assembly 4 is composed of the upper flower plate 3, the lower flower plate 8 and the heat exchange tube 17, and the shell 5 is provided with a flue 1, the flue gas The first soot removal port 2 and the second soot removal port 19 are respectively provided on both sides and the front of the road 1, the air inlet 7 and the air outlet 18 are respectively opened on both sides of the shell 5, and the flue gas return flow is provided on the side of the combustion chamber 13. The chamber 20, the combustion chamber 13 and the flue gas return chamber 20 are separated by a smoke partition wall 10. The flue gas return chamber 20 is provided with a smoke exhaust port 9, and the combustion chamber 13 is respectively provided with a feeding port 12 and a slag discharge port. 11. In order to prevent the heat exchange components from being bent and deformed under high temperature for a long time and prolong their service life, a protective layer 15 is poured on the lower faceplate 8; in order to increase the flow of the heat exchanged gas and improve the heat exchange efficiency, the shell 5 is welded with Windshield6.

Example 2

The high-power, high-efficiency hot blast stove of the present embodiment, with reference to Fig. 2, comprises combustion chamber 13 and heat exchanging assembly 4, is provided with two combustion chambers 13, and combustion chamber 13 is made of refractory brick wall 14 and shell 23, and heat exchanging assembly 4 is installed in the casing 5, and the outer periphery of the casing 5 and the casing 23 is provided with an insulating layer 16. The heat exchange assembly 4 is composed of the upper flower plate 3, the lower flower plate 8 and the heat exchange tube 17. The shell 5 is provided with a flue 1, The front of the flue 1 is respectively provided with a first soot removal port 2 and a second soot removal port 19, and the two sides of the housing 5 are respectively provided with an air inlet 7 and an air outlet 18, and the side of the combustion chamber 13 is provided with a flue gas return chamber 20 , the combustion chamber 13 and the flue gas return chamber 20 are separated by a smoke partition wall 10, the flue gas return chamber 20 is provided with a smoke exhaust port 9, and the combustion chamber 13 is respectively provided with a feed port 12 and a slag discharge port 11; In order to prevent the heat exchange components from being bent and deformed under high temperature for a long time and prolong their service life, a protective layer 15 is poured on the lower faceplate 8; in order to increase the flow of the heat-exchanged gas and improve the heat exchange efficiency, the shell 5 is welded with a windshield Plate 6; in order to increase the flue gas flow and improve the heat utilization rate of the flue gas, a first smoke baffle 21 is arranged in the flue 1 , and a second smoke baffle 22 is arranged in the flue gas return chamber 20 .

The flue gas flow in this embodiment is shown by the dotted line in the figure, and the two smoke baffles are provided to increase the flow of the flue gas, and the heat of the flue gas can be used more effectively than in the first embodiment.

The smoke exhaust port 9 of the above two embodiments is connected with an external smoke extraction pipe to facilitate the exhaust of smoke.

The combustion chambers in the above two embodiments can also be constituted by an interlayer as required, and an interlayer refers to a structure in which water is injected between two steel plates.

The content of the utility model that is not described in detail is the prior art, and those skilled in the art can gain inspiration from this embodiment and the prior art, and carry out deformation to obtain other embodiments. Therefore, the protection scope of the present utility model should be determined according to the protection scope of the claims.

Claims (5)

1. A high-power, high-efficiency hot blast stove is characterized in that it includes a combustion chamber (13) and a heat exchange assembly (4), the combustion chamber (13) is composed of a refractory brick wall (14) and a shell (23), and the heat exchange assembly ( 4) Installed in the housing (5), the outer circumference of the housing (5) and the outer shell (23) is provided with an insulating layer (16), and the heat exchange assembly (4) consists of the upper flower plate (3), the lower flower plate (8) and the heat exchanger The heat pipe (17) is composed of a flue (1) on the housing (5), and a first soot cleaning port (2) and a second soot cleaning port (19) are respectively provided on both sides and front of the flue (1). ), the housing (5) has an air inlet (7) and an air outlet (18) respectively on both sides, and a flue gas return chamber (20) is provided on one side of the combustion chamber (13), and the combustion chamber (13) and the flue gas return flow The chambers (20) are isolated by the smoke partition wall (10), the smoke exhaust port (9) is provided on the flue gas return chamber (20), and the feeding port (12) and outlet port (12) are respectively opened on the combustion chamber (13). Slag mouth (11). 2. The high-power, high-efficiency hot blast stove according to claim 1, characterized in that the number of the combustion chambers (13) is one or two or more. 3. The high-power, high-efficiency hot blast stove according to claim 1, characterized in that a protective layer (15) is poured on the lower faceplate (8). 4. The high-power, high-efficiency hot blast stove according to claim 1, characterized in that a windshield (6) is welded on the housing (5). 5. The high-power, high-efficiency hot blast stove according to claim 1, characterized in that a first smoke baffle (21) is set in the flue (1), and a second smoke baffle (21) is set in the flue gas return chamber (20). Smoke baffle (22).

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