Horizontal fuel oil and gas hot blast stove

Abstract

The utility model discloses a horizontal fuel oil and gas hot blast stove, and relates to the technical field of fuel oil and gas hot blast stoves. The boiler comprises a combustion chamber, a flue inner box is arranged outside the combustion chamber in a wrapping mode, a flue outer box is arranged outside the flue inner box in a wrapping mode, and a shell is arranged outside the flue outer box in a wrapping mode. An independent first air cavity is formed between the flue inner box and the combustion chamber; an independent smoke passing cavity is formed between the flue inner box and the flue outer box; an independent second air cavity is formed between the flue outer box and the shell; the first air cavity is communicated with the second air cavity, and the smoke passing cavity is communicated with the combustion chamber; an air inlet pipe communicated with the second air cavity and an air outlet pipe communicated with the first air cavity are arranged on the shell, and a smoke exhaust pipe communicated with the smoke passing cavity is further arranged on the shell; the problems that an existing hot blast stove is large in occupied area and low in air flow heat exchange efficiency are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel oil and gas hot blast furnaces, in particular to a horizontal fuel oil and gas hot blast furnace. Background Art

[0002] Hot air furnaces are widely used in drying, spraying and dehydrating various materials such as chemicals, food, medicinal materials, tobacco, ceramics, building materials, etc. They can also be used for heating buildings such as factories, auditoriums, farm sheds, livestock farms, and dehumidification or heating processes in underground mining areas, underground engineering, etc.

[0003] In order to improve the heat exchange between the airflow and the combustion source, the existing hot blast furnaces are generally designed to be longer or use fuel with a large heat release for combustion. The former will cause the hot blast furnace to occupy a large area, which is not conducive to the setting of the factory; while the latter will cause a large amount of heat to be wasted due to the low efficiency of heat exchange. Utility Model Content

[0004] The utility model aims to provide a horizontal oil-fired gas hot blast furnace, so as to solve the problems of large occupation area and low wind flow heat exchange efficiency of the existing hot blast furnace.

[0005] In order to solve the above problems, the utility model adopts the following technical means:

[0006] A horizontal fuel oil and gas hot blast furnace, comprising a combustion chamber, the combustion chamber is covered with a flue inner box, the flue inner box is covered with a flue outer box, and the flue outer box is covered with an outer shell;

[0007] An independent first air cavity is formed between the flue inner box and the combustion chamber;

[0008] An independent smoke passage cavity is formed between the flue inner box and the flue outer box;

[0009] An independent second air cavity is formed between the flue outer box and the outer shell;

[0010] The first air cavity is connected to the second air cavity, and the smoke cavity is connected to the combustion chamber;

[0011] The shell is provided with an air inlet pipe communicating with the second air cavity and an air outlet pipe communicating with the first air cavity, and the shell is also provided with a smoke exhaust pipe communicating with the smoke passage cavity.

[0012] Preferably, a burner connected to the combustion chamber is provided on one side of the shell, a side of the inner wall of the combustion chamber on which the burner is provided is covered with a thermal insulation lining, and the inner wall of the combustion chamber on a side opposite to the burner is also provided with the thermal insulation lining.

[0013] Furthermore, the first air cavity is connected to the second air cavity through a first pipe, the combustion chamber is connected to the smoke passage cavity through a second pipe, and the first pipe and the second pipe are both arranged away from the combustion part in the combustion chamber.

[0014] Furthermore, a vertical partition is provided in the combustion chamber to divide the combustion chamber into a smoke collecting chamber and a combustion chamber, the combustion part is provided in the combustion chamber, the connecting port between the second pipe and the combustion chamber is provided on the inner wall of the smoke collecting chamber, and the partition is provided with a smoke hole for connecting the combustion chamber and the smoke collecting chamber.

[0015] Furthermore, the partition is a thermal insulation lining.

[0016] Furthermore, the second pipe is arranged around the axis of the first pipe, and there are at least two second pipes.

[0017] During use, the utility model has the following beneficial effects:

[0018] The fuel is burned in the combustion chamber, and according to the direction of the wind flow, the external cold air enters the second air cavity from the air inlet pipe, and then enters the first air cavity after filling the second air cavity. After filling the first air cavity, it is discharged from the air outlet pipe connected to the first air cavity; and the smoke generated by the combustion in the combustion chamber is discharged from the combustion chamber into the smoke cavity, and finally discharged from the smoke exhaust pipe connected to the smoke cavity. In this way, on the one hand, smoke / wind separation is achieved to prevent the hot air output by the hot air blower from carrying part of the combustion smoke. At the same time, along the direction of smoke flow, the temperature in the first air cavity is closer to the combustion cavity, so its temperature will be significantly higher than the temperature in the second air cavity. In this way, when the cold air passes through the second air cavity, it can be effectively preheated, and then the cold air is allowed to pass through the second air cavity and the first air cavity to improve the utilization rate of heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the cross-sectional top view of the structure of the utility model.

[0021] Figure 3 It is a side structural schematic diagram of the utility model.

[0022] Among them, 1-combustion chamber, 2-flue inner box, 3-flue outer box, 4-outer shell, 5-first wind chamber, 6-smoke chamber, 7-second wind chamber, 8-air inlet pipe, 9-air outlet pipe, 10-smoke exhaust pipe, 11-burner, 12-insulation lining, 13-first pipeline, 14-second pipeline, 15-partition, 16-smoke collecting chamber, 17-combustion chamber, 18-smoke hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Please refer to Figures 1 to 3 As shown, a horizontal fuel oil and gas hot blast stove comprises a combustion chamber 1, the combustion chamber 1 is covered with a flue inner box 2, the flue inner box 2 is covered with a flue outer box 3, and the flue outer box 3 is covered with an outer shell 4;

[0030] An independent first air cavity 5 is formed between the flue inner box 2 and the combustion chamber 1;

[0031] An independent smoke passage cavity 6 is formed between the flue inner box 2 and the flue outer box 3;

[0032] An independent second air cavity 7 is formed between the flue outer box 3 and the outer shell 4;

[0033] The first air cavity 5 is connected to the second air cavity 7, and the smoke cavity 6 is connected to the combustion chamber 1;

[0034] The shell 4 is provided with an air inlet pipe 8 communicating with the second air cavity 7 and an air outlet pipe 9 communicating with the first air cavity 5 . The shell 4 is also provided with a smoke exhaust pipe 10 communicating with the smoke passage cavity 6 .

[0035] In this way, the fuel is burned in the combustion chamber 1, and according to the direction of the wind flow, the external cold air enters the second air cavity 7 from the air inlet pipe 8, and then enters the first air cavity 5 after filling the second air cavity 7, and is discharged from the air outlet pipe 9 connected to the first air cavity 5 after filling the first air cavity 5; and the smoke generated by the combustion in the combustion chamber 1 is discharged from the combustion chamber 1 into the smoke cavity 6, and finally discharged from the smoke exhaust pipe 10 connected to the smoke cavity 6. In this way, on the one hand, smoke / wind separation is achieved to prevent the hot air output by the hot air blower from carrying part of the combustion smoke. At the same time, along the direction of smoke flow, the temperature in the first air cavity 5 is closer to the combustion cavity, and its temperature will be significantly higher than the temperature in the second air cavity 7. In this way, when the cold air passes through the second air cavity 7, it can be effectively preheated, and then the cold air passes through the second air cavity 7 and the first air cavity 5 to improve the utilization rate of heat.

[0036] Furthermore, a burner 11 connected to the combustion chamber 1 is provided on one side of the shell 4, and a side of the inner wall of the combustion chamber 1 provided with the burner 11 is covered with a thermal insulation lining 12, and the inner wall of the combustion chamber 1 on the side opposite to the burner 11 is also provided with the thermal insulation lining 12.

[0037] At the same time, the first air cavity 5 is connected to the second air cavity 7 through a first pipe 13, and the combustion chamber 1 is connected to the smoke cavity 6 through a second pipe 14. The first pipe 13 and the second pipe 14 are both arranged away from the combustion part in the combustion chamber 1.

[0038] Furthermore, by disposing the first pipe 13 away from the combustion part, the wind flow can contact a larger area of ​​the heat source when flowing in the first air cavity 5 and the second air cavity 7. At the same time, by disposing the second pipe 14 away from the combustion part, the high-temperature flue gas generated in the combustion chamber 1 can heat a larger area, thereby preventing the high-temperature flue gas from being discharged quickly.

[0039] Furthermore, a vertical partition 15 is provided in the combustion chamber 1 to divide the combustion chamber 1 into a smoke collecting chamber 16 and a combustion chamber 17. The combustion part is arranged in the combustion chamber 17. The connecting port between the second pipe 14 and the combustion chamber 1 is arranged on the inner wall of the smoke collecting chamber 16. The partition 15 is provided with a smoke hole 18 for connecting the combustion chamber 17 and the smoke collecting chamber 16.

[0040] Furthermore, the partition 15 is a thermal insulation lining 12 .

[0041] Furthermore, the second pipes 14 are arranged around the axis of the first pipe 13 , and there are at least two second pipes 14 .

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal oil-fired gas hot air furnace, characterized in that: It comprises a combustion chamber (1), the combustion chamber (1) is covered with a flue inner box (2), the flue inner box (2) is covered with a flue outer box (3), and the flue outer box (3) is covered with an outer shell (4); An independent first air cavity (5) is formed between the flue inner box (2) and the combustion chamber (1); An independent smoke passage cavity (6) is formed between the flue inner box (2) and the flue outer box (3); An independent second air cavity (7) is formed between the flue outer box (3) and the outer shell (4); The first air cavity (5) is in communication with the second air cavity (7), and the smoke passage cavity (6) is in communication with the combustion chamber (1); The outer shell (4) is provided with an air inlet pipe (8) communicating with the second air cavity (7) and an air outlet pipe (9) communicating with the first air cavity (5), and the outer shell (4) is also provided with a smoke exhaust pipe (10) communicating with the smoke passage cavity (6).

2. A horizontal oil-fired gas hot blast stove according to claim 1, characterized in that: A burner (11) communicating with the combustion chamber (1) is provided on one side of the shell (4); a side of the inner wall of the combustion chamber (1) on which the burner (11) is provided is covered with a thermal insulation lining (12); and an inner wall of the combustion chamber (1) on a side opposite to the burner (11) is also provided with the thermal insulation lining (12).

3. A horizontal oil-fired gas hot blast stove according to claim 1, characterized in that: The first air cavity (5) and the second air cavity (7) are connected via a first pipe (13), the combustion chamber (1) and the smoke passage cavity (6) are connected via a second pipe (14), and the first pipe (13) and the second pipe (14) are both arranged away from a combustion part in the combustion chamber (1).

4. A horizontal oil-fired gas hot blast stove according to claim 3, characterized in that: A vertical partition (15) is provided in the combustion chamber (1) to divide the combustion chamber (1) into a smoke collecting chamber (16) and a combustion chamber (17); the combustion portion is provided in the combustion chamber (17); a communication port between the second pipe (14) and the combustion chamber (1) is provided on the inner wall of the smoke collecting chamber (16); and a smoke hole (18) for connecting the combustion chamber (17) and the smoke collecting chamber (16) is provided on the partition (15).

5. A horizontal oil-fired gas hot blast stove according to claim 4, characterized in that: The partition (15) is a thermal insulation lining (12).

6. A horizontal oil-fired gas hot blast stove according to claim 3, characterized in that: The second pipe (14) is arranged around the axis of the first pipe (13), and there are at least two second pipes (14).

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