Efficient low-nitrogen flue gas backflow secondary combustion equipment

Abstract

The utility model belongs to the technical field of low-nitrogen flue gas backflow secondary combustion equipment, and particularly relates to efficient low-nitrogen flue gas backflow secondary combustion equipment which comprises a motor and further comprises a transmission shaft, an input wheel, a transmission belt, a transmission cylinder, a gas conveying pipe, a support, fan blades and a filter plate which are arranged on one side of the motor. One side of the motor is rotationally connected with one end of the transmission shaft, the other end of the transmission shaft is fixedly installed on the surface of the input wheel, and the surface of the input wheel is further sleeved with the transmission belt. According to the device, through power input of a motor and conduction of an input wheel and a transmission belt, smooth rotation can be generated between a conveying cylinder and a gas conveying pipe, then the conveying cylinder and fan blades can drive gas in the conveying cylinder and the fan blades to move in an accelerated mode, and impurities in the gas can be filtered out under work of a filter plate; therefore, the combusted gas is purer, and the combustion can be more sufficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-nitrogen flue gas recirculation secondary combustion equipment, and particularly relates to an efficient low-nitrogen flue gas recirculation secondary combustion equipment. Background Technique

[0002] The low-nitrogen flue gas recirculation secondary combustion equipment refers to injecting a certain amount of oxygen at the boiler exhaust port to further burn the unburned oxidation substances in the flue gas and release the waste heat, thereby improving the thermal efficiency and fuel utilization rate of the boiler. Specifically, the principle of secondary combustion is to send the flue gas discharged from the combustion chamber back to the furnace again to form an oxygen-rich environment and burn with the fuel in the combustion chamber;

[0003] It is found that the publication number: CN112964077A discloses a low-nitrogen flue gas recirculation secondary combustion equipment. In this technology, it is disclosed that "a honeycomb-shaped cylinder composed of a number of honeycomb holes forms a first sealed space around the honeycomb holes. The top of the honeycomb-shaped cylinder communicates with the exhaust port of the main body. There is an air inlet on one side of the main body, and a number of burners are provided at the air inlet. The burners are connected to the upper fuel tank through an oil distributor. The fuel tank is filled with a reducing agent and is connected to an oil pump; both the air inlet and the exhaust port are connected to the lime kiln flue. The present invention mixes the flue gas at the air inlet with the reducing agent sprayed from the burner, and is fully decomposed through the voids in the main body and the honeycomb holes of the honeycomb-shaped cylinder in sequence, with sufficient denitrification, improved decomposition efficiency, up-to-standard emission, and improved automation program";

[0004] Although this design can mix the flue gas at the air inlet with the reducing agent sprayed from the burner and be fully decomposed through the voids in the main body and the honeycomb holes of the honeycomb-shaped cylinder in sequence, with sufficient denitrification, improved decomposition efficiency, up-to-standard emission, and improved automation program, there is a lack of a structure for accelerating the flue gas during the transmission process of this device. Then, during the operation process, it will inevitably lead to too low transmission efficiency of the flue gas, thereby affecting the combustion efficiency.

[0005] To solve the above problems, an efficient low-nitrogen flue gas recirculation secondary combustion equipment is proposed in this application. Content of the Utility Model

[0006] To solve the problems raised in the above background technique. The utility model provides an efficient low-nitrogen flue gas recirculation secondary combustion equipment. Through the power input of the motor and the conduction of the input wheel and the transmission belt, a smooth rotation can be generated between the transmission cylinder and the air delivery pipe. Furthermore, the transmission cylinder and the fan blades can drive the gas inside to move at an accelerated speed. Under the action of the filter plate, the impurities in the gas can also be filtered, making the combustion gas purer and enabling more complete combustion.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An efficient low-nitrogen flue gas recirculation secondary combustion device, including a motor, further including a transmission shaft, an input wheel, a transmission belt, a transmission cylinder, an air duct, a bracket, a fan blade and a filter plate arranged on one side of the motor. One side of the motor is rotatably connected to one end of the transmission shaft, and the other end of the transmission shaft is fixedly installed on the surface of the input wheel. The surface of the input wheel is also sleeved with the transmission belt, and the other end of the transmission belt is sleeved on the surface of the transmission cylinder. The two sides of the surface of the transmission cylinder are respectively rotatably connected to the inner surface of the air duct, and the inner surface of the transmission cylinder is also fixedly installed with the bracket fixedly connected to the fan blade, and the filter plate is fixedly installed on one side of the bracket.

[0008] As a preferred embodiment of the efficient low-nitrogen flue gas recirculation secondary combustion device of the present utility model, the input wheel and the transmission cylinder have the same diameter, and grooves matching the transmission belt are provided on the surfaces of the input wheel and the transmission cylinder.

[0009] As a preferred embodiment of the efficient low-nitrogen flue gas recirculation secondary combustion device of the present utility model, the transmission cylinder is cylindrical in shape.

[0010] As a preferred embodiment of the efficient low-nitrogen flue gas recirculation secondary combustion device of the present utility model, the air ducts are symmetrically arranged at both ends of the transmission cylinder, and grooves matching the transmission cylinder are provided on the inner surface of the air ducts.

[0011] As a preferred embodiment of the efficient low-nitrogen flue gas recirculation secondary combustion device of the present utility model, the fan blades are equidistantly arranged on the inner surface of the transmission cylinder.

[0012] As a preferred embodiment of the efficient low-nitrogen flue gas recirculation secondary combustion device of the present utility model, circular through holes are uniformly provided on the surface of the filter plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are: Through the power input of the motor and the conduction of the input wheel and the transmission belt, smooth rotation can be generated between the transmission cylinder and the air duct, and then the transmission cylinder and the fan blade can drive the gas inside to move at an accelerated speed. Under the action of the filter plate, impurities in the gas can be filtered, making the combustion gas purer and the combustion more complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 This is a schematic cross-sectional structure diagram of the gas transmission pipe in the present utility model;

[0017] Figure 3 This is a schematic cross-sectional structure diagram of the transmission cylinder and the gas transmission pipe in the present utility model;

[0018] Figure 4 This is a schematic cross-sectional structure diagram of the transmission cylinder and the filter plate in the present utility model;

[0019] In the figure:

[0020] 1. Motor; 2. Transmission shaft; 3. Input wheel; 4. Transmission belt; 5. Transmission cylinder; 6. Gas transmission pipe; 7. Bracket; 8. Fan blade; 9. Filter plate. Specific implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Embodiment 1

[0023] As Figure 1 shown:

[0024] An efficient low-nitrogen flue gas recirculation secondary combustion device includes a motor 1.

[0025] In this implementation: The existing {publication number}: CN112964077A discloses a low-nitrogen flue gas recirculation secondary combustion device; to solve the technical problems existing in this prior art, as disclosed in the background art above, "This device lacks a structure for accelerating the flue gas during the process of flue gas transmission, so it is inevitable that the transmission efficiency of the flue gas is too low during operation, thereby affecting the combustion efficiency". In combination, this problem is obviously a real and relatively difficult problem to solve. In view of this, to solve the above problems, a transmission shaft 2 and an input wheel 3 are added on this basis.

[0026] Furthermore:

[0027] As Figure 1 - Figure 4 shown:

[0028] Combined with the above: It also includes a transmission shaft 2, an input wheel 3, a transmission belt 4, a transmission cylinder 5, an air delivery pipe 6, a bracket 7, a fan blade 8 and a filter plate 9 arranged on one side of the motor 1. One side of the motor 1 is rotatably connected to one end of the transmission shaft 2, and the other end of the transmission shaft 2 is fixedly installed on the surface of the input wheel 3. A transmission belt 4 is also sleeved on the surface of the input wheel 3. At the same time, the other end of the transmission belt 4 is sleeved on the surface of the transmission cylinder 5. Both sides of the surface of the transmission cylinder 5 are rotatably connected to the inner surface of the air delivery pipe 6. A bracket 7 fixedly connected to the fan blade 8 is also fixedly installed on the inner surface of the transmission cylinder 5. A filter plate 9 is also fixedly installed on one side of the bracket 7.

[0029] In this embodiment: When the gas is transmitted inside the air delivery pipe 6, the motor 1 located outside the air delivery pipe 6 can be started. At this time, the motor 1 will drive the transmission shaft 2 and the input wheel 3 to rotate simultaneously. At this time, the input wheel 3 will conduct the power to the surface of the transmission cylinder 5 through the transmission belt 4 and drive the transmission cylinder 5 and the air delivery pipe 6 to rotate. At the same time, the bracket 7 and the fan blade 8 arranged inside the transmission cylinder 5 will also rotate under the drive of the transmission cylinder 5. While the bracket 7 and the fan blade 8 are rotating, the fan blade 8 will quickly discharge the air flow inside it. When the air flow passes through the filter plate 9, the filter plate 9 will filter the impurities in the gas and make the gas cleaner.

[0030] Furthermore:

[0031] In an alternative embodiment, the input wheel 3 and the transmission cylinder 5 have the same diameter, and grooves matching the transmission belt 4 are provided on the surfaces of the input wheel 3 and the transmission cylinder 5.

[0032] In this embodiment: The input wheel 3 and the transmission cylinder 5 with the same diameter can ensure stable transmission between the two and the transmission belt 4, and the grooves provided on the surfaces of the input wheel 3 and the transmission cylinder 5 can enable the transmission belt 4 to obtain a stable installation space.

[0033] Furthermore:

[0034] In an alternative embodiment, the shape of the transmission cylinder 5 is cylindrical.

[0035] In this embodiment: The cylindrical transmission cylinder 5 can form a stable connection with the air delivery pipe 6, and at the same time can ensure that the gas can pass through smoothly, making the subsequent combustion process more sufficient.

[0036] Furthermore:

[0037] In an alternative embodiment, the air delivery pipes 6 are symmetrically arranged at both ends of the transmission cylinder 5, and grooves matching the transmission cylinder 5 are provided on the inner surface of the air delivery pipes 6.

[0038] In this embodiment: The grooves formed on the inner surface of the gas transmission pipe 6 can enable the transmission cylinder 5 to have stable connection points, and can also keep each gas transmission pipe 6 stationary when the transmission cylinder 5 rotates.

[0039] Furthermore:

[0040] In an alternative embodiment, the fan blades 8 are equidistantly arranged on the inner surface of the transmission cylinder 5.

[0041] In this embodiment: The fan blades 8 equidistantly arranged inside the transmission cylinder 5 can enable the gas to accelerate through it when driven by the transmission cylinder 5, thereby improving its transmission efficiency and combustion rate.

[0042] Furthermore:

[0043] In an alternative embodiment, circular through holes are evenly formed on the surface of the filter plate 9.

[0044] In this embodiment: The through holes formed on the surface of the filter plate 9 can enable the gas to pass through smoothly, and can also filter the impurities in the air flow, thereby enabling the subsequent combustion reaction not to be affected by impurities, and at the same time avoiding the situation of pipeline congestion.

[0045] The working principle and usage process of the present utility model: When the gas is transmitted inside the gas transmission pipe 6, the motor 1 located outside the gas transmission pipe 6 can be started. At this time, the motor 1 will drive the transmission shaft 2 and the input wheel 3 to rotate simultaneously. At this time, the input wheel 3 will transmit the power to the surface of the transmission cylinder 5 through the transmission belt 4 and drive the transmission cylinder 5 and the gas transmission pipe 6 to rotate. At the same time, the bracket 7 and the fan blades 8 arranged inside the transmission cylinder 5 will also rotate under the drive of the transmission cylinder 5. When the bracket 7 and the fan blades 8 rotate, the fan blades 8 will quickly discharge the air flow inside it. When the air flow passes through the filter plate 9, the filter plate 9 will filter the impurities in the gas and make the gas cleaner.

[0046] Finally, it should be noted that: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-efficiency, low-nitrogen flue gas reflow secondary combustion device, comprising a motor (1), characterized in that: It also comprises a transmission shaft (2), an input wheel (3), a transmission belt (4), a transmission cylinder (5), an air pipe (6), a bracket (7), a fan blade (8) and a filter plate (9) arranged on one side of the motor (1); one side of the motor (1) is rotatably connected to one end of the transmission shaft (2), and the other end of the transmission shaft (2) is fixedly mounted on the surface of the input wheel (3), and the surface of the input wheel (3) is also sleeved with the transmission belt (4), and the other end of the transmission belt (4) is sleeved on the surface of the transmission cylinder (5); both sides of the surface of the transmission cylinder (5) are rotatably connected to the inner surface of the air pipe (6), and the inner surface of the transmission cylinder (5) is also fixedly mounted with the bracket (7) fixedly connected to the fan blade (8), and the filter plate (9) is also fixedly mounted on one side of the bracket (7).

2. The high-efficiency, low-nitrogen flue gas reflow secondary combustion equipment according to claim 1 is characterized in that: The input wheel (3) and the transmission cylinder (5) have the same diameter, and the surfaces of the input wheel (3) and the transmission cylinder (5) are both provided with grooves matching the transmission belt (4).

3. The high-efficiency, low-nitrogen flue gas reflow secondary combustion equipment according to claim 1 is characterized in that: The transmission cylinder (5) is cylindrical in shape.

4. The high-efficiency, low-nitrogen flue gas reflow secondary combustion equipment according to claim 1 is characterized in that: The air delivery pipe (6) is symmetrically arranged at both ends of the transmission cylinder (5), and the inner surface of the air delivery pipe (6) is provided with a groove matching the transmission cylinder (5).

5. The high-efficiency, low-nitrogen flue gas reflow secondary combustion equipment according to claim 1 is characterized in that: The fan blades (8) are arranged at equal intervals on the inner surface of the transmission cylinder (5).

6. The high-efficiency, low-nitrogen flue gas reflow secondary combustion equipment according to claim 1 is characterized in that: The surface of the filter plate (9) is evenly provided with circular through holes.

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