Three-stage oxygenation combustion-supporting air supply structure

Abstract

The utility model relates to the field of straw combustion equipment, in particular to a three-stage oxygen-adding combustion-supporting air supply structure which comprises a combustion bin, and three stages of air inlets are formed in the combustion bin from bottom to top and include a bottom first-stage air cap, a middle second-stage air cap and a top third-stage air inlet pipe. The space in the combustion bin from the first-stage air cap at the bottom to the third-stage air inlet pipe at the top is gradually reduced, and an air outlet is formed in the top of the combustion bin. The straw combustion-supporting device is reasonable in structure, can effectively achieve sufficient combustion of straw, improves the combustion speed of the straw, can support combustion of flue gas which is not completely combusted, improves the cleanliness of exhausted gas, and is beneficial to environmental protection.

Description

Technical Field

[0001] The utility model relates to the field of straw burning equipment, in particular to a three-stage oxygen-added combustion-supporting air supply structure. Background Art

[0002] Existing field straw burning equipment is mostly ordinary box-type burners. The straw is directly placed in the box for burning, and the exhaust gas is directly discharged to the ground. The process is simple. Although it can achieve centralized burning of straw and avoid fire, it is only a simple combustion with a low burning speed. It is also easy to cause incomplete combustion and incomplete combustion of the exhaust smoke. The cleanliness is low and it will still cause air pollution. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the above-mentioned technology and provide a three-stage oxygen-added combustion-supporting air supply structure.

[0004] A three-stage oxygen-added combustion-supporting air supply structure comprises a combustion chamber, wherein three levels of air inlets are arranged from bottom to top in the combustion chamber, namely a bottom level air hood, a middle level air hood and a top level air inlet pipe, the space in the combustion chamber from the bottom level air hood to the top level air inlet pipe decreases step by step, and an air outlet is arranged at the top of the combustion chamber.

[0005] Furthermore, an air inlet box is provided at the bottom of the combustion chamber, an air inlet fan is provided at the entrance of the air inlet box, an air inlet diversion pipe is connected between the air inlet fan and the air inlet box through a diversion pipe connector, the air inlet diversion pipe is provided on the side of the air inlet box, and a plurality of bottom first-level wind hoods are provided on the top of the air inlet box, and the middle second-level wind hoods and the top third-level air inlet pipe are connected to the air inlet diversion pipe through pipelines.

[0006] Furthermore, symmetrical partitions are provided on both sides of the top of the combustion chamber, the bottom ends of the partitions are inclined, and the top ends are vertical, the vertical parts of the two partitions are close to each other and the vertical parts of the partitions are provided with through holes, and the area formed by the partitions and the combustion chamber is connected to the top three-stage air inlet pipe.

[0007] The utility model has the advantages that the utility model has a reasonable structure, can effectively realize the full combustion of the straw, improve the burning speed of the straw, and can assist the combustion of the smoke that is not completely burned, improve the cleanliness of the exhaust gas, and is beneficial to environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a cross-sectional schematic diagram of a three-stage oxygen-added combustion-supporting air supply structure of the utility model;

[0009] Figure 2 It is a top view schematic diagram of a three-stage oxygen-added combustion-supporting air supply structure of the utility model;

[0010] Figure 3The utility model is a schematic diagram of a wind cap of a three-stage oxygen-added combustion-supporting air supply structure.

[0011] As shown in the figure: 1. Combustion chamber; 2. Bottom first-level wind hood; 3. Middle second-level wind hood; 4. Top third-level air inlet pipe; 5. Air outlet; 6. Air inlet box; 7. Air inlet fan; 8. Diverter pipe connector; 9. Air inlet diverter pipe; 10. Partition; 11. Through hole. DETAILED DESCRIPTION

[0012] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0013] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0014] In the description of the embodiments of the present utility model, if a feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed, connected to another feature, or indirectly set, fixed, connected, or installed on another feature.

[0015] In the description of the embodiments of the present utility model, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than" or "exceed" is involved, it should be understood as not including the number itself, if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0017] A three-stage oxygen-added combustion-supporting air supply structure comprises a combustion chamber 1, wherein the combustion chamber 1 is provided with three-stage air inlets from bottom to top, namely a bottom primary air hood 2, a middle secondary air hood 3 and a top third-stage air inlet pipe 4. The space in the combustion chamber 1 from the bottom primary air hood 2 to the top third-stage air inlet pipe 4 decreases step by step, and an air outlet 5 is provided at the top of the combustion chamber 1.

[0018] An air inlet box 6 is provided at the bottom of the combustion chamber 1, and an air inlet fan 7 is provided at the entrance of the air inlet box 6. An air inlet diversion pipe 9 is connected between the air inlet fan 7 and the air inlet box 6 via a diversion pipe connector 8. The air inlet diversion pipe 9 is provided on the side of the air inlet box 6. A plurality of bottom first-level wind hoods 2 are provided on the top of the air inlet box 6. The middle second-level wind hood 3 and the top third-level air inlet pipe 4 are connected to the air inlet diversion pipe 9 via a pipeline.

[0019] Symmetrical partitions 10 are provided on both sides of the top of the combustion chamber 1. The bottom ends of the partitions 10 are inclined and the top ends are vertical. The vertical parts of the two partitions 10 are close to each other and the vertical parts of the partitions 10 are provided with through holes 11. The area formed by the partitions 10 and the combustion chamber 1 is connected to the top three-stage air inlet pipe 4.

[0020] The bottom primary hood 2 and the middle secondary hood 3 are provided with through holes 11 .

[0021] When the utility model is in use, it is applied to a straw burner, and the crushed straw is put into a combustion chamber 1. A partition 10 is used in the combustion chamber 1 to form a tower-like internal space, and a fuel burner is arranged in the internal space. An air inlet box 6 is arranged at the bottom of the combustion chamber 1, and an air inlet diverter pipe 9 is distributed on both sides of the air inlet box 6. A plurality of bottom first-level wind caps 2 are arranged on the top of the air inlet box. The bottom first-level wind cap 2 is arranged at the bottom of the tower-shaped internal space, and the middle second-level wind cap 3 is arranged in the middle of the tower-shaped internal space. The top third-level air inlet pipe 4 is connected with the area formed by the partition 10 and the combustion chamber 1, and enters the top position of the tower-shaped internal space through the through hole 11 on the partition. The fuel burner burns the straw at the bottom position and the middle position of the tower-shaped internal space, and re-burns the smoke that is not completely burned at the top position. Finally, the smoke is discharged from the top air outlet 5 of the combustion chamber. The utility model improves the straw combustion rate and makes the smoke that is not completely burned burn again, which is beneficial to environmental protection.

[0022] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A three-stage oxygen-added combustion-supporting air supply structure, characterized in that: The combustion chamber (1) comprises a combustion chamber (1), wherein three levels of air inlets are arranged from bottom to top, namely a bottom level air hood (2), a middle level air hood (3) and a top level air inlet pipe (4), wherein the space in the combustion chamber (1) decreases step by step from the bottom level air hood (2) to the top level air inlet pipe (4), and an air outlet (5) is arranged at the top of the combustion chamber (1).

2. A three-stage oxygen-added combustion-supporting air supply structure according to claim 1, characterized in that: An air inlet box (6) is provided at the bottom of the combustion chamber (1), an air inlet fan (7) is provided at the entrance of the air inlet box (6), an air inlet diversion pipe (9) is connected between the air inlet fan (7) and the air inlet box (6) via a diversion pipe connector (8), the air inlet diversion pipe (9) is provided on the side of the air inlet box (6), a plurality of bottom first-level wind caps (2) are provided on the top of the air inlet box (6), and the middle second-level wind caps (3) and the top third-level air inlet pipe (4) are connected to the air inlet diversion pipe (9) via a pipeline.

3. A three-stage oxygen-added combustion-supporting air supply structure according to claim 2, characterized in that: Symmetrical partitions (10) are provided on both sides of the top of the combustion chamber (1), the bottom ends of the partitions (10) are inclined, and the top ends are vertical, the vertical parts of the two partitions (10) are close to each other, and the vertical parts of the partitions (10) are provided with through holes (11), and the area formed by the partitions (10) and the combustion chamber (1) is connected to the top three-stage air inlet pipe (4).

4. A three-stage oxygen-added combustion-supporting air supply structure according to claim 1, characterized in that: The bottom primary wind cap (2) and the middle secondary wind cap (3) are provided with through holes (11).

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