Stable flame and anti-backfire structure of boiler burner

Abstract

This invention discloses a flame stabilization and backfire prevention structure for a boiler burner, comprising a burner body, a power assembly, an extension assembly, and a limiting assembly. A rotating frame is connected to the inner wall of the burner body, and an extension plate is slidably connected to the inner wall of the rotating frame. The power assembly includes a gear, a toothed plate, and a hydraulic rod. The gear is located on both sides of the rotating frame's axis, and the toothed plate is slidably connected to and meshes with the burner body. The hydraulic rod is connected to the toothed plate. The extension assembly includes a base, a push rod, a round rod, and a first spring. The base and gear are pivotally connected, and the push rod is slidably connected to the base. Both ends of the first spring are connected to the base and the push rod, respectively. One end of the push rod is pivotally connected to the round rods on both sides of the extension plate. The limiting assembly includes a limiting rod, a limiting plate, and a first guide groove. The limiting plate is located on the inner wall of the guide groove, and the first spring drives the extension plate to slide along the rotating frame to form an ash discharge slope. The flame stabilization and backfire prevention structure for a boiler burner provided by this invention has the advantages of eliminating dust blockage and ensuring stable mechanical linkage operation.

Description

Technical Field

[0001] This invention relates to the technical field of boilers, and more particularly to a flame stabilization and backfire prevention structure for boiler burners. Background Technology

[0002] Boiler burners play a crucial role in industrial boiler systems, enabling efficient fuel combustion and heat energy conversion. Installed on the side of the boiler, the burner is fed internally at its output end. Simultaneous ignition and air blowing transfer the flame into the boiler, providing a continuous and stable source of heat. During operation, because the material is initially located at the nozzle port during feeding, and the ash produced after combustion remains there for extended periods, ash accumulation can cause blockages at the nozzle. If the air blowing efficiency inside the nozzle decreases, the flame from the burning material can enter the nozzle, resulting in backfire. Summary of the Invention

[0003] This invention is based on the inventor's discoveries and understanding of the following facts and problems:

[0004] The burner is clogged with dust and needs to be cleaned.

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, embodiments of the present invention propose a flame stabilization and backfire prevention structure for a boiler burner, comprising a burner body, a power assembly, an extension assembly, and a limiting assembly. A rotating frame is rotatably connected to the inner wall of the burner body, and an extension plate is slidably connected to the inner wall of the rotating frame to support and clean material ash. The power assembly includes a gear, a gear plate, and a hydraulic rod. The gear is arranged on both sides of the rotating frame's axis, and the rotating frame rotates around the axis. The gear plate is slidably connected to the burner body and meshes with the gear. The hydraulic rod is connected to the gear plate to drive the gear plate to rotate. The extension assembly includes a base, a push rod, a round rod, and a first spring sleeved on the push rod. The base is pivotally connected to the gear, and the push rod is connected to the gear... The base is slidably connected, and the two ends of the first spring are respectively connected to the base and the push rod. The push rod is arranged on both sides of the extension plate, and the end of the push rod away from the base is pivotally connected to the round rod. The limiting assembly includes a limiting rod, a limiting plate, and a first guide groove. The limiting rod is parallel to the round rod and connected to the end of the push rod away from the gear. The first guide groove is arranged on both sides of the burner body. The limiting plate is arranged on the inner wall of the first guide groove. The limiting rod is embedded in the first guide groove and moves along the first guide groove as the rotating frame rotates. The limiting plate constrains the limiting rod so that the first spring is in a compressed state. When the limiting rod is released from the constraint of the limiting plate, the first spring drives the extension plate to move along the rotating frame to form an ash discharge slope.

[0007] The present invention has the advantages and technical effects of eliminating dust blockage and ensuring stable mechanical linkage operation.

[0008] In some embodiments, the mounting frame is connected to the burner body, the hydraulic rod passes through the mounting frame and is connected to the mounting frame, and the mounting frame constrains the hydraulic rod.

[0009] In some embodiments, a square frame is located at the end of the push rod away from the base, and the inside of the square frame is pivotally connected to the round rod. The square frame, in conjunction with the angular change of the round rod during the rotation of the rotating frame, maintains the connection between the push rod and the round rod.

[0010] In some embodiments, an elastic arc plate is further included, which is located below the limiting rod and connected to the limiting plate. The first side of the elastic arc plate is parallel to one side edge of the limiting plate. The elastic arc plate moves to the release position in the first guide groove in cooperation with the limiting rod through elastic deformation.

[0011] In some embodiments, a stacking assembly is further included, the stacking assembly including a telescopic plate, long plates and a ladder block, the telescopic plate being pivotally connected to the round rod, two long plates being symmetrical about the telescopic plate and connected to the telescopic plate, the ladder block being slidably connected to the burner body, each end of the ladder block abutting against one of the long plates, and the gap length between the two long plates being adapted to the upper side length of the ladder block to limit the extension of the telescopic plate.

[0012] In some embodiments, a material storage assembly is further included, comprising a placement frame, a material storage plate, an extension plate, a fixing plate, and a slide rod. The placement frame is connected to the burner body, the material storage plate is slidably connected to the placement frame, the extension plate is symmetrically slidably connected to both sides of the material storage plate, the fixing plate is fixedly connected to both sides of the burner body, the slide rod is slidably connected to the fixing plate, and one end of the slide rod is fixedly connected to the extension plate. The two ends of a second spring are fixedly connected to the extension plate and the fixing plate, respectively. The second spring can release elastic potential energy to push the slide rod to slide along the fixing plate and drive the extension plate and the material storage plate to move towards the nozzle direction of the burner body.

[0013] In some embodiments, a sloping connecting area is provided on one side of the placement frame adjacent to the storage plate, the sloping connecting area being used to guide residual material to move to the upper side of the placement frame when the storage plate retracts.

[0014] In some embodiments, the auxiliary vibration component includes a central shaft pivotally connected to the surface of the burner body and a striking plate fixed to the surface of the central shaft, the central shaft being located below the first guide groove and the striking plate extending downward toward the extension plate; The burner body is provided with a drive assembly, which includes a plurality of second guide grooves disposed below the first guide groove, and inclined blocks corresponding to and slidably connected to the second guide grooves. The inclined blocks have inclined surfaces adapted to the second guide grooves. During the displacement process, the round rod can sequentially enter the second guide grooves and abut against the inclined blocks, pushing the inclined blocks to move down along the second guide grooves and then pressing against the striking plate, causing the striking plate to rotate and strike the lower side of the extension plate to achieve vibration cleaning.

[0015] In some embodiments, the number of the central shaft, the striking plate, the second guide groove, and the inclined block are all five, and the five central shafts, the striking plates, the second guide grooves, and the inclined blocks are equidistantly distributed.

[0016] In some embodiments, through grooves are provided on both sides of the burner body, and elastic plates are provided on the inner wall of the through grooves. The elastic plates correspond one-to-one with the inclined blocks in the second guide groove. The upper edge of the elastic plate abuts against the lower edge of the inclined block. The elastic plate can push the inclined block to reset to the initial position in the second guide groove after the round rod is disengaged.

[0017] This application offers the following advantages: The burner body, power assembly, extension assembly, and limiting assembly work together with the rotating frame and extension plate to form an ash discharge slope, completing ash removal and avoiding nozzle blockage and backfire issues, ensuring stable and reliable power transmission. The mounting frame is connected to the burner body and constrains the hydraulic rod, preventing displacement and ensuring meshing between the toothed plate and gear, while also preventing high temperatures and extending the service life of the hydraulic rod. The square frame rotatably connects the push rod and the round rod, adapting to the angle change of the round rod during the rotation of the rotating frame, eliminating transmission interference and ensuring smooth power transmission. The elastic arc plate connects to the limiting plate and is parallel to its edge, guiding the displacement of the limiting rod and preventing it from getting stuck or scraping, ensuring smooth operation of the limiting assembly. The material stacking assembly uses a telescopic plate, long plate, and ladder block for limiting, synchronously controlling the travel of the telescopic plate with the ash removal action to ensure accurate material replenishment triggering. The material storage assembly uses a second spring to drive the slide rod and storage plate towards the nozzle, replenishing the burning material, maintaining a stable material supply to the nozzle, and preventing flame fluctuations and backfire. A sloping connection area is provided on the side of the placement frame adjacent to the storage plate to guide residual material back into place, preventing material jamming and ensuring smooth repositioning of the storage plate. The auxiliary vibration component triggers the inclined blocks via a round rod, causing the striking plate to impact the extension plate and generate vibration to remove stubborn ash, ensuring thorough cleaning. Five sets of equally spaced components—the central shaft, striking plate, second guide groove, and inclined blocks—achieve multi-point, uniform tapping of the extension plate, eliminating blind spots in ash removal. The elastic plates within the through grooves correspond one-to-one with the inclined blocks, allowing the inclined blocks to automatically reset and ensuring continuous operation of the auxiliary vibration component. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the boiler burner structure with flame stabilization and backfire prevention according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram showing the position of the rotating frame of the boiler burner in the boiler burner flame stabilization and backfire prevention structure according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram showing the usage status of the power component and the material storage component of the boiler burner flame stabilization and backfire prevention structure according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram showing the usage state of the extension plate and rotating frame of the boiler burner flame stabilization and backfire prevention structure according to an embodiment of the present invention.

[0022] Figure 5 It is based on Figure 4A magnified view of a portion of the image.

[0023] Figure 6 This is a schematic diagram of the usage state of the material storage component of the boiler burner flame stabilization and backfire prevention structure according to an embodiment of the present invention.

[0024] Figure 7 It is based on Figure 6 A magnified view of a portion of the image.

[0025] Figure 8 This is a schematic diagram of the positioning component, driving component, and limiting component of the boiler burner flame stabilization and backfire prevention structure according to an embodiment of the present invention.

[0026] Figure 9 This is a partially enlarged schematic diagram of the second guide groove of the boiler burner flame stabilization and backfire prevention structure according to an embodiment of the present invention.

[0027] Reference numerals: 10. Burner body; 11. Rotating frame; 12. Extension plate; 13. Round rod; 14. Power assembly; 141. Gear; 142. Gear plate; 143. Mounting frame; 144. Hydraulic rod; 15. Outer component; 151. Base; 152. Push rod; 153. First spring; 154. Frame; 16. Limiting component; 161. Limiting rod; 162. First guide groove; 163. Limiting plate; 164. Elastic arc plate; 20. Telescopic plank; 21. Positioning component; 211. Long board; 212. Ladder block; 22. Material storage assembly; 221. Placement frame; 222. Material storage plate; 223. Extension plate; 224. Fixing plate; 225. Slide rod; 226. Second spring; 30. Central axis; 31. Striking plate; 32. Drive assembly; 321. Second guide groove; 322. Inclined block; 323. Through groove; 324. Elastic plate. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] An embodiment of the present invention proposes a flame stabilization and backfire prevention structure for a boiler burner, comprising a burner body 10, a power assembly 14, an extension assembly 15, and a limiting assembly 16. A rotating frame 11 is rotatably connected to the inner wall of the burner body 10, and an extension plate 12 is slidably connected to the inner wall of the rotating frame 11 to support and clean material ash. The power assembly 14 includes a gear 141, a gear plate 142, and a hydraulic rod 144. The gear 141 is arranged on both sides of the rotating frame 11, and the rotating frame 11 rotates around the axis. The gear plate 142 is slidably connected to the burner body 10 and meshes with the gear 141. The hydraulic rod 144 is connected to the gear plate 142 to drive the gear plate 142 to rotate the gear 141. The extension assembly 15 includes a base 151, a push rod 152, a round rod 13, and a first spring 153 sleeved on the push rod 152. The base 151 is pivotally connected to the gear 141, and the push rod 152 is pivotally connected to the gear 141. The base 151 is slidably connected, and the two ends of the first spring 153 are respectively connected to the base 151 and the push rod 152. The push rod 152 is arranged on both sides of the extension plate 12, and the end of the push rod 152 away from the base 151 is pivotally connected to the round rod 13. The limiting assembly 16 includes a limiting rod 161, a limiting plate 163, and a first guide groove 162. The limiting rod 161 is parallel to the round rod 13 and is connected to the end of the push rod 152 away from the gear 141. The groove 162 is arranged on both sides of the burner body 10. The limiting plate 163 is arranged on the inner wall of the first guide groove 162. The limiting rod 161 is embedded in the first guide groove 162 and moves along the first guide groove 162 as the rotating frame 11 rotates. The limiting plate 163 constrains the limiting rod 161 so that the first spring 153 is in a compressed state. When the limiting rod 161 is freed from the constraint of the limiting plate 163, the first spring 153 drives the extension plate 12 to move along the rotating frame 11 to form an ash discharge slope.

[0030] The burner body 10 serves as a support base, providing an installation reference for the rotating frame 11, power assembly 14, extension assembly 15, and limiting assembly 16. The rotating frame 11 is rotatably connected to the inner wall of the burner body 10 via the shafts on both sides. The rotating frame 11 can complete angular deflection around the shaft under the drive of the power assembly 14, providing sliding support and a rotation base for the extension plate 12. The extension plate 12, which is slidably connected to the inner wall of the rotating frame 11, can carry the burning material when the burner is working. During the ash removal operation, the extension plate 12 deflects with the rotating frame 11 and is driven by the extension assembly 15 to complete sliding extension, providing a bearing surface for the material ash to slide out. The gears 141 fixed on the shafts on both sides of the rotating frame 11 in the power assembly 14 mesh with the toothed plate 142 slidably connected to the outer wall of the burner body 10, converting the linear reciprocating motion output by the hydraulic rod 144 into the rotational motion of the rotating frame 11, thereby adjusting the deflection angle of the rotating frame 11. The hydraulic rod 144, as a power source, provides power to the toothed plate 142 through linear output, ensuring the synchronization of the transmission process. The base 151 provides sliding support for the push rod 152. The base 151 can rotate synchronously with the gear 141 to adapt to the angle change during the rotation of the rotating frame 11. The first spring 153 sleeved on the outer wall of the push rod 152 can be compressed and stored when the limiting rod 161 is constrained by the limiting plate 163. When the limiting rod 161 is freed from the constraint of the limiting plate 163, it releases elastic potential energy and pushes the push rod 152 to complete sliding displacement along the base 151. The round rod 13 rotatably connected to the push rod 152 drives the extension plate 12 to extend outward along the inner wall of the rotating frame 11, so that the rotating frame 11 and the extension plate 12 together form an inclined ash discharge slope facing the ash discharge port, and the material ash slides out under the action of gravity. The first guide groove 162 opened on both sides of the burner body 10 in the limiting component 16 provides trajectory constraint for the limiting rod 161 embedded in the groove, ensuring that the limiting rod 161 completes displacement along a preset path during the rotation of the rotating frame 11. The limiting plate 163 fixed to the inner wall of the first guide groove 162 can constrain the limiting rod 161 during the initial rotation of the rotating frame 11, keeping the first spring 153 in a compressed state, and controlling the release position of the limiting rod 161. This ensures that the extension plate 12 completes synchronous extension when the rotating frame 11 deflects to a preset angle, avoiding blockage caused by ash accumulation at the nozzle, eliminating the risk of backfire caused by nozzle blockage and reduced blowing efficiency, and improving the stability of the boiler burner operation.

[0031] The present invention has the advantages and technical effects of eliminating dust blockage and ensuring stable mechanical linkage operation.

[0032] In some embodiments, the mounting frame 143 is connected to the burner body 10, and the hydraulic rod 144 passes through and is connected to the mounting frame 143, with the mounting frame 143 constraining the hydraulic rod 144.

[0033] Specifically, the mounting frame 143 is rigidly connected to the outer wall of the burner body 10 at the position corresponding to the hydraulic rod 144. The mounting frame 143 has a mounting cavity that matches the shape of the hydraulic rod 144. The cylinder portion of the hydraulic rod 144 passes through the mounting cavity and forms a tight connection with the inner wall of the mounting frame 143. The mounting frame 143 provides radial constraint to the hydraulic rod 144, providing a mounting reference for the hydraulic rod 144. This prevents radial movement and axial misalignment of the hydraulic rod 144 during the reciprocating extension and retraction of the toothed plate 142, ensuring the coaxiality of the output end of the hydraulic rod 144 and the toothed plate 142. This avoids misalignment, jamming, and abnormal wear between the toothed plate 142 and the gear 141 caused by axial misalignment, thus improving transmission accuracy. The mounting frame 143 forms a physical isolation between the hydraulic rod 144 and the burner body 10, reducing heat transfer and preventing the hydraulic rod 144 from being directly affected by high temperatures, which could lead to sealing failure and deterioration of the hydraulic medium.

[0034] Optionally, the mounting frame 143 has a double-layer structure. The inner layer is a fixing and constraint sleeve adapted to the hydraulic rod 144, and the outer layer is a heat-insulating protective sleeve connected to the burner body 10. The inner layer can be made of materials such as rubber or silicone, and the outer layer can be made of heat-resistant metal or ceramic. The integral mounting frame 143 is divided into two detachable semi-frame structures, which are fixed by locking devices. The inner wall of the semi-frame is equipped with replaceable wear-resistant bushings, which can be quickly replaced and maintained without disassembling the hydraulic rod 144.

[0035] In some embodiments, the frame 154 is located at the end of the push rod 152 away from the base 151. The inside of the frame 154 is pivotally connected to the round rod 13. The frame 154 cooperates with the rotation of the frame 11 to maintain the connection between the push rod 152 and the round rod 13 during the rotation of the frame 11.

[0036] Specifically, the rectangular frame 154 is fixed to the end of the push rod 152 away from the base 151, and forms an internal space for the round rod 13 to pass through and rotate relative to it. The round rod 13 is rotatably connected to the rectangular frame 154. During the process of the rotating frame 11 causing the extension plate 12 and the round rod 13 to deflect at an angle, the rectangular frame 154 adjusts itself synchronously with the change of the round rod 13 to maintain the transmission connection between the push rod 152 and the round rod 13. This can eliminate the angular interference and stress between the push rod 152 and the round rod 13 during rotation, ensure the stable power transmission of the outward component 15, and avoid jamming or transmission failure.

[0037] In some embodiments, the device further includes an elastic arc plate 164, which is located below the limiting rod 161 and connected to the limiting plate 163. The first side of the elastic arc plate 164 is parallel to one side edge of the limiting plate 163. The elastic arc plate 164 moves to the release position in the first guide groove 162 in conjunction with the limiting rod 161 through elastic deformation.

[0038] Specifically, the elastic arc plate 164 is fixedly connected to the surface of the limiting plate 163 and located below the limiting rod 161. The upper edge of the elastic arc plate 164 is parallel to the left edge of the limiting plate 163. The elastic arc plate 164 provides smooth guiding support to the limiting rod 161, which moves downward along the first guide groove 162, by its own elastic deformation. This eliminates the jamming and scraping that occurs when the limiting rod 161 contacts the edge of the limiting plate 163, ensuring that the limiting rod 161 moves along a preset trajectory to the release position of the limit release, maintaining the stable compression state of the first spring 153, ensuring that the outward extension component 15 is triggered at the designated position, improving the operational reliability of the limiting component 16, and extending its service life. A self-lubricating wear-resistant layer can be provided on the contact surface between the elastic arc plate 164 and the limiting rod 161 to reduce sliding friction resistance.

[0039] In some embodiments, a stacking assembly is also included, comprising a telescopic plate 20, long plates 211, and a step block 212. The telescopic plate 20 is pivotally connected to the round rod 13. Two long plates 211 are symmetrical about the telescopic plate 20 and connected to it. The step block 212 is slidably connected to the burner body 10. Each end of the step block 212 abuts against a long plate 211. The gap length between the two long plates 211 is adapted to the upper length of the step block 212 to limit the extension of the telescopic plate 20.

[0040] Specifically, the material stacking assembly includes a telescopic plate 20, long plates 211, and a step block 212. The telescopic plate 20 is rotatably connected to the round rod 13 and can move synchronously with the displacement and angle changes of the round rod 13. Two long plates 211 are symmetrically fixed on the surface of the telescopic plate 20. The step block 212 is slidably connected to the burner body 10. The two ends of the step block 212 abut against the symmetrically distributed long plates 211. The gap length between the two long plates 211 is adapted to the upper length of the step block 212, which can limit the maximum extension stroke of the telescopic plate 20 and prevent the telescopic plate 20 from over-extending or under-contracting. The telescopic plate 20's extension and retraction are controlled by the movement state of the round rod 13, realizing the mechanical linkage between the material stacking assembly and the anti-backfire and ash removal structure. This simplifies the overall structure, improves the synchronization of actions, and the extension limitation ensures the triggering timing and accuracy of the subsequent material pushing action of the material stacking assembly, maintains the material supply at the front end of the burner nozzle, reduces flame fluctuations and backfire problems caused by material shortages, and improves the flame stabilization effect of the burner operation. Optionally, the long plate 211 is designed with a multi-section structure that can be quickly disassembled and assembled, making it easy to replace and reducing maintenance and replacement costs after wear.

[0041] In some embodiments, the device further includes a material storage assembly 22, which includes a placement frame 221, a material storage plate 222, an extension plate 223, a fixing plate 224, and a slide rod 225. The placement frame 221 is connected to the burner body 10, the material storage plate 222 is slidably connected to the placement frame 221, the extension plate 223 is symmetrically slidably connected to both sides of the material storage plate 222, the fixing plate 224 is fixedly connected to both sides of the burner body 10, the slide rod 225 is slidably connected to the fixing plate 224, and one end of the slide rod 225 is fixedly connected to the extension plate 223. The two ends of the second spring 226 are fixedly connected to the extension plate 223 and the fixing plate 224, respectively. The second spring 226 can release elastic potential energy to push the slide rod 225 to slide along the fixing plate 224 and drive the extension plate 223 and the material storage plate 222 to move toward the nozzle direction of the burner body 10.

[0042] Specifically, the placement frame 221 in the material storage assembly 22 is fixedly connected to the inside of the burner body 10 as a material storage carrier. The material storage plate 222 is slidably engaged with the placement frame 221 and can move directionally along the inner wall of the placement frame 221 to push the material. The extension plate 223 is symmetrically slidably connected to both sides of the material storage plate 222, adapting to the movement stroke of the material storage plate 222 and transmitting the driving force of the slide rod 225. The fixed plate 224 is fixed on both sides of the burner body 10, providing sliding support for the slide rod 225. The slide rod 225 and the fixed plate 224 form a sliding fit, and one end is fixed to the extension plate 223, which can transmit the elastic power of the second spring 226 to the extension plate 223 and the storage plate 222. The two ends of the second spring 226 are respectively connected to the extension plate 223 and the fixed plate 224. Under the constraint state, elastic energy is stored. After the constraint is released, the elastic potential energy is released, driving the slide rod 225 to slide directionally along the fixed plate 224, and simultaneously driving the extension plate 223 and the storage plate 222 to move towards the burner nozzle, replenishing the material consumed by combustion, maintaining the continuity and stability of the material supply at the nozzle front end, and avoiding the risk of flame fluctuation and backfire caused by material shortage.

[0043] In some embodiments, a sloping connection area is provided on one side of the placement frame 221 adjacent to the storage plate 222. The sloping connection area is used to guide the residual material to move to the upper side of the placement frame 221 when the storage plate 222 is reset and retracted.

[0044] Specifically, a sloping connection area is provided on the side of the placement frame 221 adjacent to the storage plate 222. When the storage plate 222 retracts and returns to its original position within the placement frame 221, the sloping surface guides any remaining material in the mating gap. The remaining material smoothly moves along the sloping surface to the storage area on the upper side of the placement frame 221, preventing material from getting stuck in the mating gap between the placement frame 221 and the storage plate 222. This prevents material jamming, resulting in incomplete retraction, sliding blockage, or structural deformation, ensuring smooth reciprocating motion of the storage assembly 22 and reducing space occupation and component wear caused by material residue accumulation. Optionally, a high-temperature resistant, self-lubricating, and wear-resistant layer can be coated on the sloping surface to reduce the sliding friction resistance of the material and the wear rate of the sloping surface in advance.

[0045] In some embodiments, the auxiliary vibration component includes a central shaft 30 pivotally connected to the surface of the burner body 10 and a striking plate 31 fixed to the surface of the central shaft 30. The central shaft 30 is located below the first guide groove 162, and the striking plate 31 extends below the extension plate 12. A drive assembly 32 is provided on the burner body 10. The drive assembly 32 includes several second guide grooves 321 located below the first guide groove 162 and inclined blocks 322 that correspond one-to-one with the second guide grooves 321 and are slidably connected. The inclined blocks 322 have inclined surfaces adapted to the second guide grooves 321. During the displacement process, the round rod 13 can enter the second guide grooves 321 in sequence and abut against the inclined blocks 322, pushing the inclined blocks 322 down along the second guide grooves 321 and pressing against the striking plate 31, causing the striking plate 31 to rotate and strike the lower side of the extension plate 12 to achieve vibration cleaning.

[0046] Specifically, the central shaft 30 of the auxiliary vibration component is rotatably connected to the burner body 10 and located below the first guide groove 162. The striking plate 31 is fixed to the surface of the central shaft 30 and extends downward to the extension plate 12. Multiple second guide grooves 321 of the drive assembly 32 are distributed below the first guide groove 162. The inclined block 322 is slidably connected to the second guide groove 321 in a one-to-one correspondence and the inclined surface is adapted to the second guide groove 321. When the round rod 13 moves along the first guide groove 162, it can enter the second guide groove 321 in sequence and abut against the inclined block 322, pushing the inclined block 322 to move downward along the second guide groove 321. During the downward movement of the inclined block 322, it presses against the striking plate 31, causing the striking plate 31 to rotate around the central shaft 30 and strike the lower side of the extension plate 12. The vibration generated by the impact loosens the stubborn ash attached to the surface of the extension plate 12 and the rotating frame 11. The ash can be completely discharged along the ash discharge slope, and the ash cleaning is thorough, avoiding the problem of nozzle blockage and backfire caused by ash residue. The multi-point distributed second guide groove 321 and inclined block 322 can realize continuous multi-point tapping of extension plate 12, expand the vibration coverage range, and achieve uniform and stable dust removal effect.

[0047] In some embodiments, the number of central shafts 30, striking plates 31, second guide grooves 321 and inclined blocks 322 are all five, and the five central shafts 30, striking plates 31, second guide grooves 321 and inclined blocks 322 are equidistantly distributed.

[0048] Specifically, the central shaft 30, the striking plate 31, the second guide groove 321 and the inclined block 322 are all configured in groups of five and are evenly distributed. The uniformly arranged structure allows the striking plate 31 to strike the lower side of the extension plate 12 at multiple points without blind spots, so that the extension plate 12 and the rotating frame 11 receive uniform vibration excitation in each area, and efficiently peel off the stubborn ash attached to the surface.

[0049] The equidistant setting ensures that the movement rhythm of the circular rod 13 when it triggers each inclined block 322 in sequence remains consistent, avoiding structural shaking or component wear caused by uneven impact. The selection of five quantities achieves the optimal balance between dust removal effect and structural complexity, ensuring sufficient tapping frequency and vibration intensity, without increasing installation difficulty or failure probability due to too many components.

[0050] In some embodiments, through grooves 323 are provided on both sides of the burner body 10, and elastic plates are provided on the inner wall of the through grooves 323. The elastic plates correspond one-to-one with the inclined blocks 322 in the second guide groove 321. The upper edge of the elastic plate abuts against the lower edge of the inclined block 322. The elastic plate can push the inclined block 322 to reset to the initial position in the second guide groove 321 after the round rod 13 is disengaged.

[0051] Specifically, through slots 323 are formed on both sides of the burner body 10. Elastic plates are fixed to the inner walls of the through slots 323. Each elastic plate corresponds one-to-one with a wedge 322 in the second guide slot 321, with the upper edge abutting against the lower edge of the wedge 322. The elastic plate releases its elastic potential energy after the round rod 13 disengages from the wedge 322, pushing the wedge 322 upwards along the second guide slot 321 back to its initial position, preparing for the next triggering of the round rod 13's striking action. This allows the auxiliary vibration component to continuously and cyclically perform the striking and ash-cleaning action without external drive or manual reset, achieving automated structural operation. The through slots 323 provide installation space and deformation constraints for the elastic plates, preventing them from shifting and failing. The one-to-one correspondence between the elastic plates and the wedges 322 ensures that each wedge 322 receives an independent reset thrust, preventing the wedge 322 from getting stuck or failing to reset properly.

[0052] Working process: In the initial state, the boiler burner is running normally, the rotating frame 11 and the extension plate 12 are kept closed to provide a bearing surface for the burning material, the hydraulic rod 144 of the power component 14 is in the retracted position, the toothed plate 142 and the gear 141 are engaged, the first spring 153 of the outward component 15 is constrained by the limiting rod 161 and is in a compressed state, the limiting rod 161 is supported by the limiting plate 163 and the elastic arc plate 164 and stays on the upper part of the first guide groove 162, the telescopic plate 20 of the stacking component is limited by the ladder block 212 and the long plate 211 and is in a retracted state, the second spring 226 of the storage component 22 is constrained by the sliding rod 225 and is in a compressed state, the storage plate 222 is retracted in the placement frame 221 to complete the pre-storage of the material, the inclined block 322 of the auxiliary vibration component is in the initial position on the upper part of the second guide groove 321 under the support of the elastic plate, and the striking plate 31 is kept separate from the lower side of the extension plate 12.

[0053] When the ash cleaning operation is started, the hydraulic rod 144 extends and pushes the toothed plate 142 to slide upward along the outer wall of the burner body 10. The toothed plate 142 meshes with the gear 141 to drive the rotating frame 11 to rotate clockwise around the axis. The extension plate 12 deflects synchronously with the rotating frame 11. The limiting rod 161 on the surface of the push rod 152 moves downward along the inner wall of the first guide groove 162. The elastic arc plate 164 adapts to the downward trajectory of the limiting rod 161 through its own elastic deformation, eliminating jamming and scraping. The limiting rod 161 is guided to move smoothly to the lowest release position on the left side of the first guide groove 162.

[0054] After the limiting rod 161 reaches the release position, it is released from the constraint of the limiting plate 163. The first spring 153 releases its elastic potential energy and pushes the push rod 152 to slide along the base 151 away from the gear 141. The push rod 152 drives the round rod 13 and the extension plate 12 to extend outward along the inner wall of the rotating frame 11 through the end square frame 154, so that the rotating frame 11 and the extension plate 12 form an inclined ash discharge slope facing the lower opening of the burner body 10, providing guidance for the ash to slide down.

[0055] As the rotating frame 11 and the extension plate 12 deflect and extend, the telescopic plate 20 moves synchronously with the round rod 13, breaking free from the limiting constraint of the ladder block 212. The constraint of the slide rod 225 in the storage assembly 22 is released, and the second spring 226 releases its elastic potential energy, pushing the slide rod 225 to slide along the fixed plate 224. Through the extension plate 223, the storage plate 222 moves along the placement frame 221 toward the burner nozzle, pushing the pre-stored material to the nozzle combustion area to replenish the material consumed by combustion. The inclined connecting area of ​​the placement frame 221 simultaneously guides the remaining material back into place, preventing material jamming from affecting the operation of the storage plate 222.

[0056] As the round rod 13 moves to the right side of the first guide groove 162 along with the push rod 152, it enters the second guide groove 321, which is distributed at equal intervals, and abuts against the inclined block 322 in the groove. The inclined block 322 pushes the inclined block 322 to slide down along the second guide groove 321. The inclined block 322 moves down and presses against the striking plate 31, causing the striking plate 31 to rotate around the central axis 30 and hit the lower side of the extension plate 12. The continuous multi-point vibration loosens the stubborn ash attached to the surface of the extension plate 12 and the rotating frame 11. Under the action of gravity and vibration, the ash slides down the ash discharge slope and is completely discharged through the lower opening of the burner body 10.

[0057] After the round rod 13 detaches from the single inclined block 322, the elastic plate in the through groove 323 releases elastic potential energy, pushing the inclined block 322 upward along the second guide groove 321 back to the initial position, preparing for the next striking action, and realizing the cyclic operation of the auxiliary vibration component.

[0058] After the dust removal operation is completed, the hydraulic rod 144 retracts, causing the toothed plate 142 to slide downwards. The gear 141 rotates counterclockwise, driving the rotating frame 11 and the extension plate 12 to rotate and reset. The round rod 13 moves upwards along the right side of the first guide groove 162, pushing the push rod 152 to retract towards the base 151. The first spring 153 is recompressed and stores energy again. The limit rod 161 returns to its initial upper position along the first guide groove 162. The telescopic plate 20 moves upwards with the round rod 13 and re-abuts against the ladder block 212, pushing the slide rod 225 to retract. The second spring 226 is compressed and stores energy again. The storage plate 222 retracts into the placement frame 221, completing a new round of material pre-storage. All components return to the initial standby state, waiting for the next operation.

[0059] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0063] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A flame stabilization and backfire prevention structure for a boiler burner, characterized in that, include: The device includes a burner body, a power assembly, an extension assembly, and a limiting assembly. A rotating frame is rotatably connected to the inner wall of the burner body, and an extension plate is slidably connected to the inner wall of the rotating frame to support and clean material ash. The power assembly includes a gear, a gear plate, and a hydraulic rod. The gear is arranged on both sides of the rotating frame's axis, and the rotating frame rotates around the axis. The gear plate is slidably connected to the burner body and meshes with the gear. The hydraulic rod is connected to the gear plate to drive the gear plate to rotate. The extension assembly includes a base, a push rod, a round rod, and a first spring sleeved on the push rod. The base is pivotally connected to the gear, and the push rod is slidably connected to the base. The two ends of the spring are connected to the base and the push rod respectively. The push rod is arranged on both sides of the extension plate. The end of the push rod away from the base is pivotally connected to the round rod. The limiting assembly includes a limiting rod, a limiting plate and a first guide groove. The limiting rod is parallel to the round rod and connected to the end of the push rod away from the gear. The first guide groove is arranged on both sides of the burner body. The limiting plate is arranged on the inner wall of the first guide groove. The limiting rod is embedded in the first guide groove and moves along the first guide groove as the rotating frame rotates. The limiting plate constrains the limiting rod so that the first spring is in a compressed state. When the limiting rod is released from the constraint of the limiting plate, the first spring drives the extension plate to move along the rotating frame to form an ash discharge slope.

2. The boiler burner flame stabilization and backfire prevention structure according to claim 1, characterized in that, The mounting frame is connected to the burner body, the hydraulic rod passes through the mounting frame and is connected to the mounting frame, and the mounting frame constrains the hydraulic rod.

3. The boiler burner flame stabilization and backfire prevention structure according to claim 1, characterized in that, The square frame is located at the end of the push rod away from the base. The inside of the square frame is pivotally connected to the round rod. The square frame, in conjunction with the rotation of the rotating frame, maintains the connection between the push rod and the round rod by changing the angle of the round rod.

4. The boiler burner flame stabilization and backfire prevention structure according to claim 1, characterized in that, It also includes an elastic arc plate, which is located below the limiting rod and connected to the limiting plate. The first side of the elastic arc plate is parallel to one side edge of the limiting plate. The elastic arc plate moves to the release position in the first guide groove in cooperation with the limiting rod through elastic deformation.

5. The boiler burner flame stabilization and backfire prevention structure according to claim 1, characterized in that, It also includes a stacking assembly, which includes a telescopic plate, long plates, and a ladder block. The telescopic plate is pivotally connected to the round rod. Two long plates are symmetrical about the telescopic plate and connected to it. The ladder block is slidably connected to the burner body. Each end of the ladder block abuts against one of the long plates. The gap length between the two long plates is adapted to the upper length of the ladder block to limit the extension of the telescopic plate.

6. The boiler burner flame stabilization and backfire prevention structure according to claim 1, characterized in that, It also includes a material storage assembly, which includes a placement frame, a material storage plate, an extension plate, a fixing plate, and a slide rod. The placement frame is connected to the burner body, the material storage plate is slidably connected to the placement frame, the extension plate is symmetrically slidably connected to both sides of the material storage plate, the fixing plate is fixedly connected to both sides of the burner body, the slide rod is slidably connected to the fixing plate, and one end of the slide rod is fixedly connected to the extension plate. The two ends of a second spring are fixedly connected to the extension plate and the fixing plate, respectively. The second spring can release elastic potential energy to push the slide rod to slide along the fixing plate and drive the extension plate and the material storage plate to move towards the nozzle direction of the burner body.

7. The boiler burner flame stabilization and backfire prevention structure according to claim 6, characterized in that, A sloping connecting area is provided on one side of the placement frame adjacent to the storage plate. The sloping connecting area is used to guide the remaining material to move to the upper side of the placement frame when the storage plate is reset and retracted.

8. The boiler burner flame stabilization and backfire prevention structure according to claim 1, characterized in that, The auxiliary vibration component includes a central shaft pivotally connected to the surface of the burner body and a striking plate fixed to the surface of the central shaft. The central shaft is located below the first guide groove, and the striking plate extends downward toward the extension plate. The burner body is provided with a drive assembly, which includes a plurality of second guide grooves disposed below the first guide groove, and inclined blocks corresponding to and slidably connected to the second guide grooves. The inclined blocks have inclined surfaces adapted to the second guide grooves. During the displacement process, the round rod can sequentially enter the second guide grooves and abut against the inclined blocks, pushing the inclined blocks to move down along the second guide grooves and then pressing against the striking plate, causing the striking plate to rotate and strike the lower side of the extension plate to achieve vibration cleaning.

9. The boiler burner flame stabilization and backfire prevention structure according to claim 8, characterized in that, The number of the central shaft, striking plate, second guide groove and inclined block are all five, and the five central shafts, striking plates, second guide grooves and inclined blocks are distributed at equal intervals.

10. The boiler burner flame stabilization and backfire prevention structure according to claim 8, characterized in that, The burner body has through slots on both sides, and elastic plates are provided on the inner walls of the through slots. The elastic plates correspond one-to-one with the inclined blocks in the second guide slot. The upper edge of the elastic plate abuts against the lower edge of the inclined block. The elastic plate can push the inclined block to return to its initial position in the second guide slot after the round rod is disengaged.

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