Coal-saving burner

Abstract

The invention discloses a coal-saving burner which comprises a burning pipe, a burner body, a gas inlet pipe and a gas outlet pipe. The driving assembly comprises a guiding pipe, the guiding pipe is arranged in the combustion pipe, the guiding pipe is in a hollow circular truncated cone shape, the farther the distance between the guiding pipe and the air inlet is, the smaller the radius is, and the feeding pipe communicates with the interior of the guiding pipe; the igniter is arranged on the wall surface of one end, far away from the air inlet, of the guide pipe; and the crushing assembly is arranged in the guide pipe, is located at the end, close to the air inlet, of the guide pipe and is used for crushing pulverized coal. Due to the design that the inner diameter of the guide pipe is gradually increased, light pulverized coal particles move towards the igniter along with air flow entering the guide pipe, heavy pulverized coal particles can move downwards along the side wall of the guide pipe under the action of gravity and are crushed by the crushing assembly, the particles are finer, the contact area between pulverized coal and air is increased, and the combustion efficiency of the pulverized coal is improved. The combustion efficiency is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of calcining equipment, in particular to a coal-saving burner. Background Art

[0002] In the mechanical forging industry, the metal blank must be heated to soften it. Pressure is then applied to the blank during forging, causing it to plastically deform and produce a forged part with defined mechanical properties, shape, and size. The burner is a crucial component in this heating process. The burner mixes fuel with air through an airflow channel, igniting it via an ignition device. This creates a precisely shaped flame within the kiln, calcining the material. A suitable burner flame shape ensures a balanced temperature distribution within the kiln, generating strong and uniform heat radiation. This provides the ideal temperature for the fired material, improving kiln output quality, reducing heat consumption, and extending the service life of the rotary kiln's refractory bricks. It also protects the burner nozzle from premature burnout and maintains a uniform temperature within the kiln.

[0003] The coal-saving burners currently available on the market will first grind the coal blocks into powder when burning coal. This can increase its surface area and improve the contact area with oxygen. The coal powder is easily surrounded by oxygen, making the combustion reaction more complete and rapid. The high specific surface area of ​​the coal powder helps to improve the combustion efficiency and avoid the waste of coal. However, when grinding the coal powder, it is impossible to ensure that each coal powder is the same size, resulting in some coal powder being larger and unable to be fully burned. Summary of the Invention

[0004] Therefore, it is necessary to provide a coal-saving burner to solve the problem that some coal powder is too large to be fully burned when burning coal mines.

[0005] To achieve the above object, the present invention provides a coal-saving burner, comprising:

[0006] A combustion tube provided with an air inlet and a feed pipe;

[0007] The driving assembly includes a guide tube, the guide tube being disposed inside the combustion tube and being in the shape of a hollow truncated cone with a radius decreasing as the distance from the air inlet decreases, and the feed tube being in communication with the interior of the guide tube;

[0008] An igniter, the igniter being provided on a wall surface of one end of the guide tube away from the air inlet; and

[0009] A crushing assembly is arranged inside the guide pipe and located at one end close to the air inlet, and is used for crushing coal powder.

[0010] Furthermore, the driving assembly includes a driving shaft and a mounting seat, the driving shaft is rotatably arranged inside the guide tube through the mounting seat, the crushing assembly includes a crushing frame, a linkage frame and a squeezing ball, the crushing frame is sleeved on the driving shaft, the linkage frame is installed on the inner side wall of the crushing frame, the linkage frame is installed on the driving shaft, the squeezing ball is arranged inside the crushing frame, the squeezing ball is fitted with the inner side wall of the crushing frame, and the side wall of the squeezing ball is provided with a fixing rod installed on the inner side wall of the guide tube.

[0011] Furthermore, a plurality of deformation grooves are provided on the side wall of the crushing frame at equal intervals, and / or

[0012] The outer side wall of the crushing frame is rough.

[0013] Furthermore, the driving assembly includes a driving shaft, a mounting base, an air inlet frame and a stirring belt. The driving shaft can be rotatably arranged inside the guide tube through the mounting base. The air inlet frame is arranged on the side wall of the air inlet of the combustion tube. A plurality of driving blades are arranged inside the air inlet frame. The plurality of driving blades are equidistantly mounted on the driving shaft in a circumferential manner. The stirring belt is mounted on the driving shaft.

[0014] Furthermore, it also includes a reflux component, which is arranged inside the combustion tube, located on the side of the igniter away from the air inlet, and is connected to the inside of the feed tube, for guiding the exhaust gas to the inside of the feed tube.

[0015] Furthermore, the reflux assembly includes a positioning frame, a manifold and a return pipe. The positioning frame is installed inside the inner wall of the combustion tube away from the air inlet. The manifold is installed on the inner wall of the positioning frame. A truncated cone-shaped groove is provided in the middle of the manifold. A plurality of diversion grooves equidistantly distributed around the circumference are provided on the inner wall of the manifold. A collecting groove aligned with the diversion groove is provided on the inner wall of the positioning frame. A return pipe is installed on the top of the side wall of the positioning frame. The end of the return pipe away from the positioning frame is connected to the interior of the feed pipe.

[0016] Furthermore, the diversion troughs are distributed in an inclined manner, and / or,

[0017] A collecting frame is installed on the side wall of the positioning frame close to the igniter, and the cross section of the collecting frame is triangular.

[0018] Furthermore, a spiral block is installed on the inner wall of the manifold near one end of the igniter, and a conical diffuser is installed on the end of the spiral block near the igniter. A spiral groove is opened on the side wall of the spiral block and passes through the side wall of the diffuser, and the spiral groove is spiral.

[0019] Furthermore, a sealing component is included. The inside of the feed pipe is provided with the sealing component, and the sealing component is used to seal or open the feed pipe.

[0020] Furthermore, the sealing assembly includes two mirror-distributed sealing plates, the side walls of the two sealing plates are installed with hinges, the two hinges are respectively installed on the side wall surfaces that are close to each other inside the feed pipe, the bottom ends of the side walls of the two sealing plates are connected with support springs, and the far ends of the two support springs are respectively installed on the side wall surfaces that are close to each other inside the feed pipe.

[0021] The above technical solution has the following beneficial effects:

[0022] Pulverized coal enters the guide tube through the feed pipe. Due to the gradually increasing inner diameter of the guide tube, the lighter coal particles move toward the igniter along with the airflow entering the guide tube, ensuring sufficient oxygen upon reaching the igniter, resulting in rapid and complete combustion. Due to gravity, the heavier coal particles move downward along the side walls of the guide tube (away from the igniter), where they are crushed by the crushing assembly, resulting in finer particles. This increases the contact area between the coal and the air, further improving combustion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view of the coal-saving burner of this embodiment;

[0024] Figure 2 This is a front cross-sectional view of the coal-saving burner of this embodiment;

[0025] Figure 3 This is a schematic diagram of the left side of the cross section of the coal-saving burner of this embodiment;

[0026] Figure 4 This is a schematic diagram of the right side of the cross section of the coal-saving burner of this embodiment;

[0027] Figure 5 Schematic diagram of the diversion trough layout of this embodiment;

[0028] Figure 6 yes Figure 3 Enlarged view of point A in the middle.

[0029] Description of reference numerals:

[0030] 1. Combustion tube;

[0031] 2. Drive assembly; 21. Air inlet frame; 22. Connecting flange; 23. Drive blades; 24. Guide tube; 25. Positioning frame; 26. Drive shaft; 27. Agitation belt; 28. Fixing frame; 29. ​​Mounting frame;

[0032] 3. Ignition device;

[0033] 4. Crushing assembly; 41. Crushing frame; 42. Linkage frame; 43. Deformation groove; 44. Fixing rod; 45. Extrusion ball;

[0034] 5. Feed pipe;

[0035] 6. Reflux assembly; 61. Positioning frame; 62. Manifold; 63. Diverter trough; 64. Manifold; 65. Spiral block; 66. Diffuser plate; 67. Spiral trough; 68. Manifold frame; 69. Reflux pipe;

[0036] 7. Sealing assembly; 71. Sealing plate; 72. Hinge; 73. Support spring. DETAILED DESCRIPTION

[0037] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0038] See also Figures 1 to 3 , this embodiment provides a coal-saving burner, comprising:

[0039] The combustion tube 1 is provided with an air inlet and a feed pipe 5, the air inlet is used to introduce air, and the feed pipe 5 is used to introduce pulverized coal;

[0040] The drive assembly 2 includes a guide tube 24, which is disposed inside the combustion tube 1. The guide tube 24 is in the shape of a hollow truncated cone with a radius that decreases as it is farther from the air inlet. The feed tube 5 is in communication with the interior of the guide tube 24.

[0041] An igniter 3 is provided on the wall of one end of the guide tube 24 away from the air inlet; and

[0042] The crushing assembly 4 is arranged inside the guide pipe 24 and is located at one end close to the air inlet, and is used to crush the coal powder to ensure that larger coal powder can also be burned.

[0043] The above technical solution has the following beneficial effects:

[0044] Pulverized coal enters guide tube 24 through feed tube 5. Due to the gradually increasing inner diameter of guide tube 24, lighter coal particles migrate toward igniter 3 along with the airflow entering guide tube 24, ensuring sufficient oxygen upon reaching igniter 3, leading to rapid and complete combustion. Heavier coal particles, due to gravity, migrate downward along the sidewalls of guide tube 24 (away from igniter 3) and are pulverized by pulverization assembly 4. These particles become finer, increasing the contact area between the coal and air and further improving combustion efficiency.

[0045] See also Figure 2 and Figure 3In this embodiment, the driving assembly 2 includes a driving shaft 26 and a mounting seat. The driving shaft 26 can be rotatably arranged inside the guide tube 24 through the mounting seat. The crushing assembly 4 includes a crushing frame 41, a linkage frame 42 and a squeezing ball 45. The crushing frame 41 is sleeved on the driving shaft 26. The inner side wall of the crushing frame 41 is equipped with a linkage frame 42. The linkage frame 42 is installed on the driving shaft 26. The interior of the crushing frame 41 is provided with a squeezing ball 45. The squeezing ball 45 is fitted with the inner side wall of the crushing frame 41. The side wall of the squeezing ball 45 is provided with a fixing rod 44 installed on the inner side wall of the guide tube 24.

[0046] The position of the squeezing ball 45 is fixed by the fixing rod 44, and the larger coal powder is guided to both sides by the bottom end of the squeezing ball 45, so that the coal powder is located in front and behind the squeezing ball 45. When the squeezing ball 45 contacts the inner wall of the crushing frame 41, when the crushing frame 41 rotates with the drive shaft 26, the squeezing ball 45 squeezes the side wall of the crushing frame 41, causing the crushing frame 41 to deform downward. Therefore, the crushing frame 41 can directly crush the coal powder, thereby improving the crushing efficiency of the coal powder.

[0047] When larger coal powder moves toward the air inlet along the inner wall of the guide pipe 24, the coal powder will contact the outer wall of the crushing frame 41. Since the crushing frame 41 will rotate with the drive shaft 26, the friction between the crushing frame 41 and the coal powder can be increased to grind the coal powder. After the coal powder is ground, its volume and weight are reduced, and it will move toward the igniter 3 with the wind entering the guide pipe 24. By grinding the larger coal powder, the combustion efficiency of the coal powder is guaranteed.

[0048] See also Figure 2 and Figure 3 In this embodiment, a plurality of deformation grooves 43 are equidistantly provided on the circumference of the side wall of the crushing frame 41 , and the side wall of the crushing frame 41 is divided into multiple parts by the deformation grooves 43 , which facilitates the deformation of the side wall of the crushing frame 41 .

[0049] By setting the crushing frame 41 into a truncated cone shape, there is a gap between the outer wall of the crushing frame 41 and the inner wall of the guide tube 24, and then the end of the crushing frame 41 close to the squeezing ball 45 is divided into multiple sections through the deformation groove 43. Since the position of the squeezing ball 45 is fixed, when the squeezing ball 45 contacts the side wall of the crushing frame 41 between two adjacent deformation grooves 43, since the end of the crushing frame 41 close to the squeezing ball 45 has no support, it can only bend downward as the squeezing ball 45 presses.

[0050] See also Figure 2 and Figure 3In this embodiment, the outer wall of the crushing frame 41 is roughened. Because the outer wall of the crushing frame 41 is roughened, its surface has many protrusions and depressions, which increases the contact area and friction between the crushing ball 45 and the crushing ball 45. When the crushing ball 45 slides on the crushing frame 41, these protrusions and depressions can more effectively grab the coal powder particles, especially the larger ones, and crush them through friction and compression.

[0051] In some embodiments, the pulverizing assembly 4 may also be other two components to achieve pulverization of coal powder.

[0052] See also Figure 2 and Figure 3 In this embodiment, the drive assembly 2 includes a drive shaft 26, a mounting base, an air inlet frame 21, and a stirring belt 27. The drive shaft 26 is rotatably mounted within the guide tube 24 via the mounting base. The air inlet frame 21 is mounted on the sidewall of the air inlet of the combustion tube 1. A plurality of drive blades 23 are mounted on the drive shaft 26 at equal intervals around the circumference. The stirring belt 27 is mounted on the drive shaft 26. Preferably, there are multiple stirring belts 27, and the stirring belts 27 are evenly mounted on the sidewall of the drive shaft 26.

[0053] The stirring belt 27 is made of a relatively soft material. By making the stirring belt 27 of the relatively soft material, the stirring belt 27 can contact the inner wall of the guide pipe 24 , making it easier for the coal powder to float inside the guide pipe 24 . The pulverized coal to be burned is poured into the interior of the guide pipe 24 through the feed pipe 5, and the external air is introduced into the interior of the air inlet frame 21 through the air inlet - the air inlet can be connected to an external fan to drive the driving blades 23 inside the air inlet frame 21 to rotate, and at the same time, air will also enter the interior of the guide pipe 24. The rotation of the driving blades 23 will drive the stirring belt 27 to rotate through the driving shaft 26, and the stirring belt 27 will stir the pulverized coal inside the guide pipe 24. The lighter pulverized coal therefore floats inside the guide pipe 24, and moves toward the igniter 3 with the air entering the guide pipe 24. The air entering the guide pipe 24 ensures that the igniter 3 has enough oxygen when igniting the pulverized coal, while the heavier pulverized coal will move along the side wall of the guide pipe 24 to the side away from the igniter 3, ensuring that the pulverized coal can be fully burned, and avoiding the situation where the larger pulverized coal is not discharged due to insufficient combustion, resulting in waste.

[0054] See also Figure 2 and Figure 3 In this embodiment, the mounting base includes a fixing frame 28 and a positioning frame 25. The positioning frame 25 is installed on the inner side wall of the guide tube 24, and the drive shaft 26 is rotatably installed inside the positioning frame 25. The fixing frame 28 is rotatably installed on the end of the drive shaft 26 away from the air inlet. The fixing frame 28 is installed inside the guide tube 24. The mutual cooperation between the positioning frame 25 and the fixing frame 28 ensures that the position of the drive shaft 26 is stable.

[0055] See also Figure 1 In this embodiment, the end of the air inlet frame 21 away from the combustion tube 1 is fixedly connected to the output end of the external fan, and the air inlet frame 21 and the combustion tube 1 are both installed with connecting flanges 22 on the side (air inlet) of the wall. The two connecting flanges 22 are preferably formed integrally with the air inlet frame 21 and the combustion tube 1, which helps to stabilize the connection structure. The two connecting flanges 22 are fixedly connected together by bolts, so that the air inlet frame 21 is installed on the side wall of the combustion tube 1.

[0056] See also Figure 3 In this embodiment, the drive assembly 2 further includes a mounting frame 29. The mounting frame 29 is mounted on the inner side wall of the combustion tube 1. The guide tube 24 is mounted on the inner side wall of the mounting frame 29. The mounting frame 29 fills the gap between the guide tube 24 and the inner side wall of the combustion tube 1, thereby preventing air from flowing in the gap between the guide tube 24 and the inner side wall of the combustion tube 1.

[0057] See also Figure 2 In this embodiment, to prevent dust generated during the combustion of pulverized coal from flowing out, the coal-saving burner further includes a reflux assembly 6. The reflux assembly 6 is disposed within the combustion tube 1, on the side of the igniter 3 away from the air inlet, and is connected to the interior of the feed tube 5 to guide the exhaust gas into the feed tube 5. In the feed tube 5, the exhaust gas is mixed with new pulverized coal and re-enters the combustion process. In this way, incompletely burned pulverized coal particles can be reused, improving energy efficiency. At the same time, through the action of the reflux assembly 6, harmful substances in the exhaust gas are further processed during the combustion process, reducing the emission of harmful substances and benefiting environmental protection.

[0058] See also Figure 2 、 Figure 4 and Figure 5 In this embodiment, the reflux assembly 6 includes a positioning frame 61, a manifold 62 and a return pipe 69. The positioning frame 61 is installed inside the inner wall of the combustion tube 1 at one end away from the air inlet. The inner wall of the positioning frame 61 is installed with the manifold 62. A truncated cone-shaped groove is provided in the middle of the manifold 62. The inner wall of the manifold 62 is provided with a plurality of diversion grooves 63 equidistantly distributed around the circumference. The inner wall of the positioning frame 61 is provided with a collecting groove 64 aligned with the diversion grooves 63. A return pipe 69 is installed at the top of the side wall of the positioning frame 61. The end of the return pipe 69 away from the positioning frame 61 is connected to the interior of the feed pipe 5, and the two ends of the return pipe 69 are respectively connected to the interior of the positioning frame 61 and the feed pipe 5.

[0059] By opening a conical groove on the inner wall of the conduit 62, the outward-flowing air is gathered toward the center, so that the exhaust gas can fully contact the inner wall of the conduit 62 and thus enter the inside of the diversion groove 63. By tilting the diversion groove 63, the exhaust gas can rotate inside the conduit 64, preventing dust in the exhaust gas from settling inside the conduit 64.

[0060] The exhaust gas rotates inside the collecting tank 64, which facilitates the exhaust gas to enter the inside of the return pipe 69. The exhaust gas collected inside the collecting tank 64 is introduced into the inside of the feed pipe 5 through the return pipe 69. As the coal powder added to the inside of the guide pipe 24 flows back to the inside of the guide pipe 24, it is burned together with the coal powder, avoiding dust in the exhaust gas from causing pollution to the environment. At the same time, the dust in the exhaust gas is burned, reducing the use of coal powder, achieving the effect of saving coal. In the process of exhaust gas contacting with coal powder, it can preheat the coal powder, facilitating the combustion of coal powder.

[0061] See also Figure 2 、 Figure 4 and Figure 5 In this embodiment, the diverter grooves 63 are arranged in an inclined pattern. This design helps improve airflow distribution. During the combustion process, the flow direction of the exhaust gas may be disturbed due to the influence of the flame and high temperature. The inclined diverter grooves 63 can better adapt to such airflow changes, ensuring that the exhaust gas flows smoothly and evenly, thereby avoiding airflow blockage or short-circuiting.

[0062] See also Figure 2 and Figure 4 In this embodiment, a collecting frame 68 is mounted on the side wall of the positioning frame 61 near the igniter 3. The collecting frame 68 has a triangular cross-section. This design helps to better collect and guide the exhaust gas from the vicinity of the igniter 3. The collecting frame 68 conveniently guides the exhaust gas generated during combustion into the interior of the positioning frame 61.

[0063] See also Figure 2 and Figure 4 In this embodiment, in order to increase the contact time between the exhaust gas and the inner wall of the manifold 62, a spiral block 65 is installed at one end of the inner wall of the manifold 62 close to the igniter 3, and a conical diffuser 66 is installed at one end of the spiral block 65 close to the igniter 3. A spiral groove 67 is provided on the side wall of the spiral block 65 and passes through the side wall of the diffuser 66. The spiral groove 67 is spiral.

[0064] This design is intended to better guide and control the flow of exhaust gas. The exhaust gas is diffused in all directions through the diffuser plate 66 and divided into multiple parts to enter the interior of the spiral groove 67. The spiral groove 67 is spiral-shaped. The exhaust gas rotates while flowing under the influence of the spiral groove 67, which can guide the exhaust gas to flow along the spiral groove 67 on its side wall to form a spiral airflow, thereby increasing the contact time between the exhaust gas and the inner wall of the manifold 62. In the process of spiral flow of the exhaust gas, the exhaust gas dust will easily enter the interior of the diversion groove 63 under the influence of centrifugal force, which is convenient for screening the dust in the exhaust gas.

[0065] See also Figure 6 In this embodiment, to prevent exhaust gas from flowing upward within feed pipe 5, the coal-saving burner further includes a sealing assembly 7. Seal assembly 7 is disposed within feed pipe 5 and is used to seal or open feed pipe 5. Seal assembly 7 tightly seals the opening of feed pipe 5, ensuring that exhaust gas does not continue to flow along feed pipe 5 during the pulverized coal combustion process. This helps improve combustion efficiency, reduces pulverized coal waste, and reduces environmental pollution.

[0066] See also Figure 6 In this embodiment, the sealing assembly 7 automatically opens in response to the introduction of pulverized coal and remains closed to seal the feed pipe 5. The sealing assembly 7 includes two mirror-image sealing plates 71. Hinge 72 is mounted on the sidewalls of each sealing plate 71. The hinges 72 are mounted on adjacent side walls within the feed pipe 5. Support springs 73 are connected to the bottom ends of the sidewalls of each sealing plate 71. The distal ends of the two support springs 73 are mounted on adjacent side walls within the feed pipe 5.

[0067] When coal powder is poured into the interior of the feed pipe 5, the bottom ends of the two sealing plates 71 open under the impact of the coal powder, and the coal powder falls downward. When no more coal powder is put in, the bottom ends of the sealing plates 71 are pushed by utilizing the elasticity of the support spring 73, so that the sealing plates 71 rotate around the hinges 72, and the bottom ends of the two sealing plates 71 fit together to seal the interior of the feed pipe 5, so that the exhaust gas entering the feed pipe 5 through the reflux pipe 69 can no longer flow upward, thereby preventing the exhaust gas from rushing upward.

[0068] In some embodiments, the sealing assembly can be composed of two mirror-distributed sealing plates and two mirror-distributed linear motion mechanisms (such as air cylinders, oil cylinders, electric cylinders), one sealing plate is connected to one linear motion mechanism, and the linear motion mechanism is controlled by a PLC controller to drive the sealing plate to extend and retract, so that the two sealing plates move toward each other until they contact to achieve sealing, and the two sealing plates move away from each other to achieve opening.

[0069] Here's how this application works:

[0070] The pulverized coal to be burned is poured into the interior of the guide pipe 24 through the feed pipe 5, and air is introduced into the interior of the air inlet frame 21 through the outside, driving the driving blades 23 inside the air inlet frame 21 to rotate. At the same time, air will also enter the interior of the guide pipe 24. The rotation of the driving blades 23 will drive the stirring belt 27 to rotate through the driving shaft 26, and the stirring belt 27 will stir the pulverized coal inside the guide pipe 24. The lighter pulverized coal therefore floats inside the guide pipe 24, and moves toward the igniter 3 with the air entering the guide pipe 24. The air entering the guide pipe 24 ensures that the igniter 3 has enough oxygen to ignite the pulverized coal, while the heavier pulverized coal will move along the side wall of the guide pipe 24 to the side away from the igniter 3, ensuring that the pulverized coal can be fully burned, and avoiding the situation where the larger pulverized coal is not discharged due to insufficient combustion, resulting in waste.

[0071] The position of the squeezing ball 45 is fixed by the fixing rod 44, and the larger coal powder is guided to both sides by the bottom end of the squeezing ball 45, so that the coal powder is located in front and behind the squeezing ball 45. When the squeezing ball 45 contacts the inner wall of the crushing frame 41, when the crushing frame 41 rotates with the drive shaft 26, the squeezing ball 45 squeezes the side wall of the crushing frame 41, causing the crushing frame 41 to deform downward. Therefore, the crushing frame 41 can directly crush the coal powder, thereby improving the crushing efficiency of the coal powder.

[0072] The exhaust gas collected in the collecting tank 64 is introduced into the feed pipe 5 through the reflux pipe 69. As the pulverized coal added to the guide pipe 24 flows back to the guide pipe 24, it is burned together with the pulverized coal, thus preventing the dust in the exhaust gas from polluting the environment. At the same time, the dust in the exhaust gas is burned, reducing the use of pulverized coal and achieving the effect of saving coal. In the process of contact between the exhaust gas and the pulverized coal, the pulverized coal can be preheated to facilitate the combustion of the pulverized coal.

[0073] The exhaust gas is diffused in all directions by the diffuser plate 66 and divided into multiple portions and enters the interior of the spiral groove 67. The spiral groove 67 is spiral-shaped. The exhaust gas rotates while flowing under the influence of the spiral groove 67, thereby increasing the contact time between the exhaust gas and the inner wall of the manifold 62. In addition, during the spiral flow of the exhaust gas, the exhaust gas dust can easily enter the interior of the diversion groove 63 under the influence of centrifugal force, thereby facilitating the screening of dust in the exhaust gas.

[0074] When coal powder is poured into the interior of the feed pipe 5, the bottom ends of the two sealing plates 71 open under the impact of the coal powder, and the coal powder falls downward. When no more coal powder is put in, the bottom ends of the sealing plates 71 are pushed by utilizing the elasticity of the support spring 73, so that the sealing plates 71 rotate around the hinge 72, and the bottom ends of the two sealing plates 71 fit together to seal the interior of the feed pipe 5, so that the exhaust gas entering the feed pipe 5 through the reflux pipe 69 cannot flow upward, thereby preventing the exhaust gas from rushing upward.

[0075] The present invention has the following beneficial effects:

[0076] First, the pulverized coal to be burned is poured into the inside of the guide tube through the feed pipe, and air is introduced into the inside of the air inlet frame through the outside to drive the driving blades inside the air inlet frame to rotate. At the same time, air will also enter the inside of the guide tube. The rotation of the driving blades will drive the stirring belt to rotate through the driving shaft. The stirring belt will stir the pulverized coal inside the guide tube. The lighter pulverized coal will therefore float inside the guide tube and move toward the igniter with the air entering the guide tube. The air entering the guide tube ensures that the igniter has enough oxygen to ignite the pulverized coal, while the larger pulverized coal will move along the side wall of the guide tube to the side away from the igniter, ensuring that the pulverized coal can be fully burned, avoiding the situation where the larger pulverized coal is not discharged due to insufficient combustion, resulting in waste. This solves the problem of insufficient combustion of existing pulverized coal.

[0077] Second, the position of the squeezing ball is fixed by a fixing rod, and the larger coal powder is guided to both sides by the bottom end of the squeezing ball, so that the coal powder is located in front and behind the squeezing ball. When the squeezing ball contacts the inner wall of the crushing frame, the crushing frame rotates with the driving shaft, and the squeezing ball squeezes the side wall of the crushing frame, causing the crushing frame to deform downward. Therefore, the crushing frame can directly crush the coal powder, thereby improving the crushing efficiency of the coal powder.

[0078] Third: the exhaust gas collected in the collecting tank is introduced into the feed pipe through the reflux pipe. As the pulverized coal is added to the guide pipe, it flows back to the guide pipe and is burned together with the pulverized coal, thus avoiding the dust in the exhaust gas from polluting the environment. At the same time, the dust in the exhaust gas is burned, reducing the use of pulverized coal and achieving the effect of saving coal. In the process of contact between the exhaust gas and the pulverized coal, the pulverized coal can be preheated to facilitate the combustion of the pulverized coal.

[0079] Fourthly, the exhaust gas is diffused to the surroundings through the diffusion plate and divided into multiple parts to enter the interior of the spiral groove. The spiral groove is spiral-shaped. The exhaust gas rotates while flowing under the influence of the spiral groove, which increases the contact time between the exhaust gas and the inner wall of the manifold. In the process of spiral flow of the exhaust gas, the exhaust gas dust will easily enter the interior of the diversion groove under the influence of centrifugal force, which is convenient for screening the dust in the exhaust gas.

[0080] Fifth: When coal powder is poured into the feed pipe, the bottom ends of the two sealing plates open under the impact of the coal powder, and the coal powder falls downward. When no more coal powder is put in, the bottom ends of the sealing plates are pushed by the elasticity of the support spring, so that the sealing plates rotate around the hinges, and the bottom ends of the two sealing plates fit together to seal the inside of the feed pipe, so that the exhaust gas entering the feed pipe through the reflux pipe can no longer flow upward, thereby preventing the exhaust gas from rushing upward.

[0081] It should be noted that, in this document, relational terms such as first and second, etc., are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, the terms "include," "comprise," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or terminal device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. Without further limitation, elements defined by the phrase "include..." or "comprising..." do not exclude the presence of additional elements in the process, method, article, or terminal device comprising the elements. Furthermore, in this document, "greater than," "less than," "exceeding," etc., are understood to exclude the number itself; "above," "below," "within," etc., are understood to include the number itself.

[0082] Although the above embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they know the basic creative concepts. Therefore, the above descriptions are merely embodiments of the present invention and do not limit the scope of patent protection of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the scope of patent protection of the present invention.

Claims

1. A coal-saving burner, characterized in that: include: A combustion tube provided with an air inlet and a feed pipe; The driving assembly includes a guide tube, the guide tube being disposed inside the combustion tube and being in the shape of a hollow truncated cone with a radius decreasing as the distance from the air inlet decreases, and the feed tube being in communication with the interior of the guide tube; An igniter, the igniter being arranged on a wall surface of one end of the guide tube away from the air inlet; as well as A crushing assembly is arranged inside the guide pipe and located at one end close to the air inlet, and is used for crushing coal powder.

2. The coal-saving burner according to claim 1, characterized in that: The driving assembly includes a driving shaft and a mounting seat, and the driving shaft is rotatably arranged inside the guide tube through the mounting seat. The crushing assembly includes a crushing frame, a linkage frame and a squeezing ball. The crushing frame is sleeved on the driving shaft, and the linkage frame is installed on the inner side wall of the crushing frame. The linkage frame is installed on the driving shaft. The squeezing ball is arranged inside the crushing frame, and the squeezing ball is in contact with the inner side wall of the crushing frame. The side wall of the squeezing ball is provided with a fixing rod installed on the inner side wall of the guide tube.

3. The coal-saving burner according to claim 2, characterized in that: The side wall of the crushing frame is provided with a plurality of deformation grooves equidistantly around the circumference, and / or, The outer side wall of the crushing frame is rough.

4. The coal-saving burner according to claim 1, characterized in that: The driving assembly includes a driving shaft, a mounting base, an air inlet frame and a stirring belt. The driving shaft can be rotatably arranged inside the guide tube through the mounting base. The air inlet frame is arranged on the side wall of the air inlet of the combustion tube. A plurality of driving blades are arranged inside the air inlet frame. The plurality of driving blades are equidistantly mounted on the driving shaft in a circumferential manner. The stirring belt is mounted on the driving shaft.

5. The coal-saving burner according to claim 4, characterized in that: It also includes a reflux component, which is arranged inside the combustion tube, located on the side of the igniter away from the air inlet, and is connected to the inside of the feed tube for guiding the exhaust gas to the inside of the feed tube.

6. The coal-saving burner according to claim 5, characterized in that: The reflux assembly includes a positioning frame, a manifold and a return pipe. The positioning frame is installed inside the inner wall of the combustion tube away from the air inlet. The manifold is installed on the inner wall of the positioning frame. A truncated cone-shaped groove is provided in the middle of the manifold. A plurality of diversion grooves equidistantly distributed around the circumference are provided on the inner wall of the manifold. A collecting groove aligned with the diversion groove is provided on the inner wall of the positioning frame. A return pipe is installed on the top of the side wall of the positioning frame. The end of the return pipe away from the positioning frame is connected to the interior of the feed pipe.

7. The coal-saving burner according to claim 6, characterized in that: The diversion troughs are distributed in an inclined manner, and / or, A collecting frame is installed on the side wall of the positioning frame close to the igniter, and the cross section of the collecting frame is triangular.

8. The coal-saving burner according to claim 6, characterized in that: A spiral block is installed on one end of the inner wall of the manifold close to the igniter, and a conical diffuser is installed on one end of the spiral block close to the igniter. A spiral groove is opened on the side wall of the spiral block and passes through the side wall of the diffuser, and the spiral groove is spiral.

9. The coal-saving burner according to claim 1, characterized in that: It also includes a sealing component, which is arranged inside the feeding pipe and is used to seal or open the feeding pipe.

10. The coal-saving burner according to claim 9, characterized in that: The sealing assembly includes two mirror-distributed sealing plates, and the side walls of the two sealing plates are installed with hinges, and the two hinges are respectively installed on the side wall surfaces that are close to each other inside the feed pipe. The bottom ends of the side walls of the two sealing plates are connected to support springs, and the far ends of the two support springs are respectively installed on the side wall surfaces that are close to each other inside the feed pipe.

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