Air supply regulation and control device for oxygen-enriched combustion of boiler

Abstract

The utility model discloses an air supply regulation and control device for oxygen-enriched combustion of a boiler, and relates to the technical field of oxygen-enriched combustion boilers, the air supply regulation and control device comprises an air supply box, an air volume regulation and control mechanism is arranged in the air supply box, and the air volume regulation and control mechanism comprises a separation assembly and a transverse frame, a partition plate is fixedly connected to one end of the transverse frame, an inclined plate is rotatably mounted at the other end of the transverse frame, a connecting rod is rotatably connected to the tail end of the inclined plate, a translation plate is fixed to the other end of the connecting rod, and a shielding plate is fixed to one end of the lower portion of the translation plate. The limiting assembly is arranged on the inner side of the air supply box and used for conducting sliding limiting on the partition plate and the translation plate; the problem that the combustion process cannot be ensured to be in the optimal state due to the fact that the air supply amount in the boiler can only be regulated and controlled by switching different levels of wind power switches in the wind power equipment and is difficult to regulate and control more finely according to actual needs is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen-enriched combustion boilers, in particular to an air supply control device for oxygen-enriched combustion of boilers. Background Art

[0002] As an efficient and energy-saving combustion method, oxygen-enriched combustion technology has received extensive attention and application in the field of boiler combustion in recent years. Oxygen-enriched combustion technology increases the oxygen concentration in the combustion-supporting air, allowing the fuel to burn fully in an oxygen-enriched environment, thereby increasing the flame temperature, enhancing heat transfer in the furnace, reducing heat loss from exhaust gas, and significantly reducing the emission of pollutants such as NOx and SO2. This technology can not only significantly improve the thermal efficiency of the boiler, but also effectively reduce greenhouse gas emissions, which is of great significance for achieving sustainable energy utilization and environmental protection.

[0003] In the prior art, the reference patent name is an oxygen-enriched combustion energy-saving boiler (publication number CN221629786U), which includes a boiler body, a charging port fixedly connected to the upper left end of the boiler body, a smoke exhaust pipe fixedly connected to the upper end of the boiler body, a rotating frame arranged inside the smoke exhaust pipe, flame retardant sponges fixedly connected to the inside of both ends of the rotating frame, a rotating mechanism arranged on the left side of the smoke exhaust pipe, and the rotating mechanism is used to drive the rotating frame to rotate; a bearing plate fixedly connected to the inside of the boiler body, a mixing mechanism arranged inside the boiler body, an oxygen inlet pipe and a burner fixedly connected to the lower right end of the boiler body, and the combustion end of the burner is located at the upper end of the bearing plate. By setting a rotating mechanism and a rotating frame, when the flame retardant sponge needs to be replaced, the rotating frame is driven to rotate by the rotating mechanism, so that the flame retardant sponge located outside the smoke exhaust pipe is rotated to the inside of the smoke exhaust pipe under the action of the rotating frame, thereby realizing the replacement of the flame retardant sponge.

[0004] Although the above patent has good energy saving performance, in the specific combustion process, the oxygen injection amount (i.e., air supply amount) inside the boiler can only be regulated by switching the wind power switches of different levels in the wind power equipment, and it is difficult to perform more refined regulation according to actual needs, which leads to the combustion process cannot be ensured to be in the best state. To this end, the utility model provides an air supply control device for oxygen-enriched combustion of boilers. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an air supply control device for oxygen-enriched combustion in a boiler, which solves the problem that the air supply volume inside the boiler can only be controlled by switching different levels of wind power switches in the wind power equipment, but it is difficult to perform more refined control according to actual needs, resulting in the combustion process being unable to ensure that it is in the best state.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: an air supply control device for oxygen-enriched combustion of a boiler, comprising an air supply box, wherein an air volume control mechanism is arranged inside the air supply box, and the air volume control mechanism comprises:

[0007] A partition assembly is arranged inside the air supply box, comprising a horizontal frame slidably mounted on the inner wall of the air supply box, one end of the horizontal frame is fixedly connected to a partition plate, and the other end of the horizontal frame is rotatably mounted with an inclined plate, the end of the inclined plate is rotatably connected to a connecting rod, and the other end of the connecting rod is fixed with a translation plate, and one end of the lower part of the translation plate is fixed with a shielding plate;

[0008] The limiting assembly is arranged on the inner side of the air supply box and is used to slide and limit the partition plate and the translation plate;

[0009] The driving assembly is arranged at the bottom of the air supply box and is used to drive the partition plate to rise and fall horizontally.

[0010] Preferably, the limiting assembly includes vertical sliding blocks integrally formed on both sides of the horizontal frame, and the inner wall of the air supply box is provided with vertical sliding grooves for the vertical sliding blocks to slide up and down.

[0011] Preferably, transverse sliders are integrally formed on both sides of the connecting rod, and two groups of positioning rods are installed at the bottom of the air supply box, and the inner sides of the two groups of positioning rods are provided with horizontal sliding grooves for the horizontal cooperation and sliding of the transverse sliders.

[0012] Preferably, the driving assembly includes an extension cylinder fixedly mounted on the bottom of the air supply box, and a retractable piston rod is provided at the upper end of the extension cylinder, and the piston rod extends into the interior of the air supply box and is connected to the cross frame.

[0013] Preferably, a dust filter screen is fixedly installed on the inner wall of the air supply box, and an air inlet is installed at the front end of the air supply box, and an air outlet pipe is arranged at the front of one end of the air supply box, and a cleaning brush is installed at one end of the partition plate close to the dust filter screen.

[0014] Preferably, an air outlet is provided at the bottom of the air supply box, and the air outlet is shielded and closed by a shielding plate that slides horizontally.

[0015] Beneficial Effects

[0016] The utility model provides an air supply control device for oxygen-enriched combustion in a boiler. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The air supply control device for oxygen-enriched combustion of the boiler is designed with an air volume control mechanism. The push cylinder fixed at the bottom of the air supply box directly pushes the cross frame to move up and down through the extension and contraction of its piston rod. The cross frame slides up and down in the air supply box, driving the partition plate to move synchronously. The movement of the partition plate directly changes the size of the air duct inside the air supply box, thereby realizing the cutting and diversion of the air volume inside the air supply box. In this process, the other end of the cross frame is connected to the translation plate through an inclined plate and a connecting rod to form a synchronous moving structure. When the cross frame moves up and down, the vertical movement is converted into horizontal movement of the translation plate through the inclination change of the inclined plate. The sliding of the translation plate further drives the shielding plate to slide at the bottom of the air supply box, thereby controlling the opening degree of the air vent, and can divide the internal space of the air supply box into two air supply channels, one of which ensures the normal circulation of the air flow, and the other channel exhausts the air through separation, thereby achieving the purpose of regulating the air supply volume.

[0018] (2) The air supply control device for oxygen-enriched combustion of the boiler is provided with a dust filter screen inside the air supply box to filter impurities in the air entering the air supply box, thereby ensuring the quality of the air supplied to the boiler. The air inlet pipe serves as a passage for external air to enter the air supply box, while the air outlet pipe delivers the regulated air into the boiler. In particular, a cleaning brush is installed at one end of the partition plate close to the dust filter screen. As the partition plate moves, the cleaning brush can automatically clean the dust accumulated on the dust filter screen to maintain its good filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 This is a schematic diagram showing the interior of the air supply box of the utility model;

[0021] Figure 3 It is an isometric schematic diagram of the partition assembly of the utility model;

[0022] Figure 4 It is a schematic diagram of the bottom of the partition component of the utility model.

[0023] In the figure: 1-air supply box, 2-air volume control mechanism, 21-partition assembly, 211-cross frame, 212-partition plate, 213-inclined plate, 214-connecting rod, 215-translation plate, 216-shielding plate, 22-limiting assembly, 221-vertical slider, 222-vertical slide, 223-lateral slider, 224-positioning rod, 225-horizontal slide, 23-driving assembly, 231-pushing cylinder, 232-piston rod, 3-dust filter screen, 4-air inlet, 5-air outlet pipe, 6-cleaning brush. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 The utility model provides a technical solution: an air supply control device for oxygen-enriched combustion of a boiler, comprising an air supply box 1, wherein an air volume control mechanism 2 is arranged inside the air supply box 1, wherein the air volume control mechanism 2 comprises: a partition assembly 21, arranged inside the air supply box 1, comprising a horizontal frame 211 slidably mounted on the inner wall of the air supply box 1, one end of the horizontal frame 211 is fixedly connected with a partition plate 212, and the other end of the horizontal frame 211 is rotatably mounted with an inclined plate 213, the end of the inclined plate 213 is rotatably connected with a connecting rod 214, and the other end of the connecting rod 214 is fixed with a translation plate 215, and a shielding plate 216 is fixed at one end of the lower part of the translation plate 215; a limiting assembly 22, arranged on the inner side of the air supply box 1, and used for slidingly limiting the partition plate 212 and the translation plate 215; a driving assembly 23, arranged at the bottom of the air supply box 1, and used for driving the partition plate 212 to rise and fall horizontally.

[0026] In this embodiment, the limit assembly 22 includes vertical sliders 221 integrally formed on both sides of the cross frame 211, and the inner wall of the air supply box 1 is provided with vertical slide grooves 222 for the vertical sliders 221 to slide up and down, and transverse sliders 223 are integrally formed on both sides of the connecting rod 214, and two groups of positioning rods 224 are installed at the bottom of the air supply box 1. The inner sides of the two groups of positioning rods 224 are provided with horizontal slide grooves 225 for the horizontal sliding of the transverse sliders 223. The vertical sliders 221 on both sides of the cross frame 211 slide up and down in the vertical slide grooves 222 on the inner wall of the air supply box 1, providing vertical limitation and guidance. Similarly, the transverse sliders 223 on both sides of the connecting rod 214 slide horizontally in the horizontal slide grooves 225 on the inner sides of the positioning rods 224, ensuring the stable movement of the translation plate 215 in the horizontal direction.

[0027] In this embodiment, the driving assembly 23 includes a pushing cylinder 231 fixedly installed at the bottom of the air supply box 1, and a retractable piston rod 232 is provided at the upper end of the pushing cylinder 231, and the piston rod 232 extends into the interior of the air supply box 1 and is connected to the cross frame 211. The pushing cylinder 231 fixed at the bottom of the air supply box 1 directly pushes the cross frame 211 to move up and down through the extension and retraction of its piston rod 232.

[0028] In this embodiment, a dust filter screen 3 is fixedly installed on the inner wall of the air supply box 1, and an air inlet 4 is installed at the front end of the air supply box 1, and an air outlet duct 5 is arranged at the front part of one end of the air supply box 1. A cleaning brush 6 is installed at the end of the partition plate 212 close to the dust filter screen 3. The air inlet 4 serves as a channel for external air to enter the air supply box 1, and the air outlet duct 5 delivers the regulated air into the boiler. A cleaning brush 6 is installed at the end of the partition plate 212 close to the dust filter screen 3. As the partition plate 212 moves, the cleaning brush 6 can automatically clean the accumulated dust on the dust filter screen 3 to maintain its good filtering effect.

[0029] In this embodiment, an air outlet is provided at the bottom of the air supply box 1, and the air outlet is shielded and closed by a shielding plate 216 that slides horizontally.

[0030] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] During operation, firstly, the air supply box 1, as the main body of the whole device, is responsible for delivering the processed air into the boiler for oxygen-enriched combustion. The air supply box 1 is integrated with an air volume control mechanism 2. The driving component 23 is the power source of the whole control device. The extension cylinder 231 fixed to the bottom of the air supply box 1 directly pushes the cross frame 211 to move up and down through the extension and contraction of its piston rod 232. The cross frame 211 slides up and down in the air supply box 1, driving the partition plate 212 to move synchronously. The movement of the partition plate 212 directly changes the size of the air duct inside the air supply box 1, thereby realizing the cutting and diversion of the air volume inside the air supply box 1. During this process, the other end of the horizontal frame 211 is connected to the translation plate 215 through the inclined plate 213 and the connecting rod 214, forming a synchronous moving structure. When the horizontal frame 211 moves up and down, the vertical movement is converted into horizontal movement of the translation plate 215 through the inclination change of the inclined plate 213. The sliding of the translation plate 215 further drives the shielding plate 216 to slide at the bottom of the air supply box 1, thereby controlling the opening degree of the air outlet, and can divide the internal space of the air supply box 1 into two air supply channels, one of which ensures the normal circulation of the air flow, and the other channel exhausts the air by separation, thereby achieving the purpose of regulating the air supply volume.

[0032] In order to ensure that the partition plate 212 and the translation plate 215 can slide stably and smoothly, a limit assembly 22 is set. The vertical sliders 221 on both sides of the cross frame 211 slide up and down in the vertical slide grooves 222 on the inner wall of the air supply box 1, providing vertical limitation and guidance. Similarly, the horizontal sliders 223 on both sides of the connecting rod 214 slide horizontally in the horizontal slide grooves 225 on the inner side of the positioning rod 224, ensuring the stable movement of the translation plate 215 in the horizontal direction.

[0033] In addition, a dust filter screen 3 is provided inside the air supply box 1 for filtering impurities in the air entering the air supply box 1 to ensure the quality of the air sent to the boiler. The air inlet tube 4 serves as a channel for external air to enter the air supply box 1, while the air outlet pipe 5 sends the regulated air into the boiler. In particular, a cleaning brush 6 is installed at one end of the partition plate 212 close to the dust filter screen 3. As the partition plate 212 moves, the cleaning brush 6 can automatically clean the accumulated dust on the dust filter screen 3 to maintain its good filtering effect.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler air supply control device for oxygen-enriched combustion, comprising an air supply box (1), characterized in that: The air supply box (1) is provided with an air volume control mechanism (2) inside, and the air volume control mechanism (2) comprises: A partition assembly (21) is arranged inside the air supply box (1), and comprises a horizontal frame (211) slidably mounted on the inner wall of the air supply box (1) up and down, one end of the horizontal frame (211) is fixedly connected to a partition plate (212), and the other end of the horizontal frame (211) is rotatably mounted with an inclined plate (213), the end of the inclined plate (213) is rotatably connected to a connecting rod (214), and the other end of the connecting rod (214) is fixed with a translation plate (215), and a shielding plate (216) is fixed to one end of the lower part of the translation plate (215); A limit assembly (22) is arranged on the inner side of the air supply box (1) and is used to slide and limit the partition plate (212) and the translation plate (215); The driving assembly (23) is arranged at the bottom of the air supply box (1) and is used to drive the partition plate (212) to rise and fall horizontally.

2. The air supply control device for boiler oxygen-enriched combustion according to claim 1, characterized in that: The position limiting assembly (22) comprises vertical sliding blocks (221) integrally formed on both sides of the horizontal frame (211), and the inner wall of the air supply box (1) is provided with vertical sliding grooves (222) for the vertical sliding blocks (221) to slide up and down in cooperation.

3. The air supply control device for boiler oxygen-enriched combustion according to claim 1, characterized in that: Transverse sliders (223) are integrally formed on both sides of the connecting rod (214), and two groups of positioning rods (224) are installed at the bottom of the air supply box (1). The inner sides of the two groups of positioning rods (224) are provided with horizontal sliding grooves (225) for the horizontal sliding of the transverse sliders (223).

4. The air supply control device for boiler oxygen-enriched combustion according to claim 1, characterized in that: The driving assembly (23) comprises a push cylinder (231) fixedly mounted on the bottom of the air supply box (1), and a retractable piston rod (232) is provided at the upper end of the push cylinder (231), and the piston rod (232) extends into the interior of the air supply box (1) and is connected to the cross frame (211).

5. The air supply control device for boiler oxygen-enriched combustion according to claim 1, characterized in that: A dust filter screen (3) is fixedly mounted on the inner wall of the air supply box (1), and an air inlet tube (4) is installed at the front end of the air supply box (1), while an air outlet pipe (5) is arranged at the front of one end of the air supply box (1), and a cleaning brush (6) is installed at one end of the partition plate (212) close to the dust filter screen (3).

6. The air supply control device for boiler oxygen-enriched combustion according to claim 1, characterized in that: The bottom of the air supply box (1) is provided with an air outlet, which is shielded and closed by a shielding plate (216) that slides horizontally.

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