Efficient combustion device for combustion chamber of hot blast stove

Abstract

The utility model discloses an efficient combustion device for a hot-blast stove combustion chamber, and relates to the technical field of efficient combustion of hot-blast stoves. A display panel is fixedly connected to the front end of the device body, a heat exchanger is fixedly mounted in the device body, a combustion furnace is arranged in the device body, and the heat exchanger and the combustion furnace are connected through a pipeline. The feeding plate rotates under the action of the second motor, so that biomass particles on the surface of the filter plate cannot be accumulated into blocks, and meanwhile, the ash removal plate at the bottom of the feeding plate is attached to the surface of the filter plate, so that the biomass particles are prevented from being accumulated into blocks; ash generated after surface combustion can be swept into a collecting bin, and due to the fact that the bottom of an ash removal plate is arranged to be an inclined plane, the ash removal plate contracts into the feeding plate under the action of a spring when making contact with biomass particles, the ash removal plate can only clean the ash generated after combustion, and the phenomenon that holes in the surface of the filter plate are blocked is avoided.

Description

Technical Field

[0001] This utility model relates to the field of high-efficiency combustion technology for hot blast stoves, and specifically to a high-efficiency combustion device for the combustion chamber of a hot blast stove. Background Technology

[0002] Hot air furnaces are thermal power machinery that have become a replacement for electric heat sources and traditional steam power sources in many industries. There are many types and series of hot air furnaces, which are divided into hand-fired and machine-fired types according to the coal feeding method, and into coal, oil, and gas furnaces according to the type of fuel.

[0003] Currently, hot blast stoves mainly rely on the hot flue gas generated by fuel combustion to transfer this heat to the air through a heat exchanger, ultimately outputting hot air for heating. During operation, fuel waste is generated and accumulates in the combustion chamber. However, since there is no dedicated mechanism to handle the fuel waste, operators need to open the hot blast stove and manually remove the fuel waste. This method is not only inefficient and time-consuming, increasing the workload and cost, but also causes the hot blast stove to lose a large amount of heat during the period it is open.

[0004] Chinese patent document CN221222994U discloses a combustion energy-saving hot air stove, including a combustion chamber. A distribution cylinder is fixedly connected to the top of the combustion chamber, and heat exchange tubes are interlaced within the distribution cylinder. A feeding hopper is fixedly connected to one side of the combustion chamber, and a fuel screening assembly is installed inside the feeding hopper to screen the fed fuel and remove larger fuel particles. A slag collection rack is fixedly connected to the bottom of the combustion chamber, and a rapid processing assembly is installed inside the slag collection rack to push the slag produced by combustion outside the combustion chamber for processing to reduce heat loss from the slag discharge port. A combustion carrier plate with a mesh structure is fixedly connected between the inner walls of the combustion chamber. An air inlet pipe is installed on one side of the combustion chamber. However, the following defects still exist in its implementation:

[0005] While the device described in the aforementioned literature can quickly process slag by pushing the outer baffle on the exposed side of the slag collection frame when slag needs to be cleaned, allowing the empty slag collection frame located on the outside to move into the inside of the slag collection frame, and simultaneously pushing out the slag-filled slag collection frame, making the operation convenient and quick, it avoids wasting heat and greatly reduces energy loss in practical applications, while also reducing the workload of slag processing. However, during the combustion process, some fuel waste accumulates inside the combustion chamber, causing subsequent fuel to be unburned and piled up at the bottom, resulting in incomplete combustion. This also clogs the fuel discharge port of the combustion chamber, requiring manual secondary cleaning, increasing fuel usage costs, and causing resource waste. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency combustion device for the combustion chamber of a hot blast stove, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A high-efficiency combustion device for a hot blast stove combustion chamber includes a main body; a display panel is fixedly connected to the front end of the main body; a heat exchanger is fixedly installed inside the main body; a combustion furnace is arranged inside the main body; the heat exchanger and the combustion furnace are connected by a pipe; a collection bin is fixedly connected to the bottom of the inner wall of the combustion furnace; a discharge pipe is fixedly connected to the middle of the collection bin; an auger is rotatably connected to the inner wall of the discharge pipe; and a No. 1 motor is fixedly connected to the side of the collection bin away from the discharge pipe.

[0009] Using the above technical solution, biomass pellets are fed into the combustion furnace from the storage silo and accumulate on the surface of the filter plate. The ash generated during the combustion of biomass pellets falls into the collection silo through the holes on the surface of the filter plate. At this time, the auger discharges the ash under the action of motor No. 1, and the staff can collect the ash for secondary use.

[0010] A further improvement of the present invention is that: a storage bin is fixedly connected to the outer wall of the combustion furnace, a filter plate is provided on the top of the collection bin, the filter plate and the combustion furnace are detachably connected, a second motor is fixedly connected to the bottom of the filter plate, and multiple feeding plates arranged in a circular array are rotatably connected to the side of the filter plate away from the second motor, and a cleaning plate is slidably connected to the inner wall of the feeding plate.

[0011] Using the above technical solution, the feeding plate rotates under the action of motor No. 2, so that the biomass particles on the surface of the filter plate will not accumulate into clumps. At the same time, the ash removal plate at the bottom of the feeding plate is in contact with the surface of the filter plate, which not only prevents the biomass particles from accumulating into clumps, but also sweeps the ash after surface combustion into the collection bin.

[0012] A further improvement of the present invention is that: a fixing plate is fixedly connected to the top of each cleaning plate, the fixing plate and the feeding plate are slidably connected, and multiple springs arranged in a linear array are fixedly connected to the top of each cleaning plate, and the cleaning plate and the filter plate are slidably connected.

[0013] In the above technical solution, the cleaning plate and the feeding plate are connected by a spring, and the fixing plate on the surface of the cleaning plate can prevent it from detaching from the feeding plate.

[0014] A further improvement of this utility model is that the bottom of the dust removal plate is set at an angle.

[0015] In the above technical solution, the bottom of the cleaning plate is set at an angle. When it comes into contact with biomass pellets, it retracts into the inside of the feeding plate under the action of the spring, so that the cleaning plate can only clean the ash after combustion, avoiding the phenomenon of clogging of the pores on the surface of the filter plate.

[0016] A further improvement of the present invention is that: a limiting plate is fixedly connected to the top of the inner wall of the combustion furnace, a plurality of limiting pieces are fixedly connected to the inner wall of the limiting plate, a fixed frame is inserted into the top of the limiting plate, a vent plate is detachably connected to the top of the fixed frame, and a plurality of plug-in rods that are adapted to the shape and contour of the limiting pieces are fixedly connected to the bottom of the fixed frame.

[0017] Using the above technical solution, workers can insert the fixing frame into the surface of the limiting plate from top to bottom to fix the position of the fixing frame.

[0018] A further improvement of this utility model is that the diameter of the inner ring of the limiting piece is smaller than the diameter of the bottom of the plug rod.

[0019] Using the above technical solution, the plug-in rod at the bottom of the fixed frame is cylindrical with a notch in the middle. When inserted, the bottom of the plug-in rod squeezes the limiting piece and expands outward. After insertion, the limiting piece resets and locks into the middle position of the plug-in rod, thus achieving the connection between the fixed frame and the limiting plate.

[0020] A further improvement of this utility model is that absorbent cotton is detachably connected to the bottom of the inner sidewall of the fixed frame.

[0021] Using the above technical solution, the absorbent cotton can effectively absorb harmful gases produced during combustion. When in use, the absorbent cotton is placed inside the fixed frame, and the flue gas produced by combustion is filtered through the absorbent cotton and the breathable plate before being used.

[0022] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0023] 1. This utility model provides a high-efficiency combustion device for the combustion chamber of a hot air furnace. By setting a feeding plate to rotate under the action of a No. 2 motor, the biomass particles on the surface of the filter plate will not accumulate into clumps. At the same time, the ash-cleaning plate at the bottom of the feeding plate is in contact with the surface of the filter plate, which not only prevents the biomass particles from accumulating into clumps, but also sweeps the ash after combustion into the collection bin. It should be noted that the ash-cleaning plate and the feeding plate are connected by a spring. The fixing plate on the surface of the ash-cleaning plate can prevent it from detaching from the feeding plate. During the rotation of the feeding plate, the ash-cleaning plate moves with it. Because its bottom is set at an angle, when it comes into contact with the biomass particles, it retracts into the interior of the feeding plate under the action of the spring, so that the ash-cleaning plate can only clean the ash after combustion and avoid the pores on the surface of the filter plate from becoming blocked.

[0024] 2. This utility model provides a high-efficiency combustion device for the combustion chamber of a hot air furnace. The absorbent cotton can effectively absorb harmful gases generated during combustion. In use, the absorbent cotton is placed inside the fixed frame. The flue gas generated by combustion is filtered through the absorbent cotton and the vent plate before use. The absorbent cotton can be replaced periodically by the operator. It should be noted that the operator can insert the fixed frame into the surface of the limiting plate from top to bottom to fix the position of the fixed frame. The plug rod at the bottom of the fixed frame is cylindrical with a notch in the middle. When inserted, the bottom of the plug rod squeezes the limiting piece and expands outward. After insertion, the limiting piece resets and locks into the middle position of the plug rod, realizing the connection between the fixed frame and the limiting plate.

[0025] 3. This utility model provides a high-efficiency combustion device for the combustion chamber of a hot air furnace. After biomass pellets are fed into the combustion furnace from the storage bin, they are piled on the surface of the filter plate. During the combustion of the biomass pellets, the ash produced falls into the collection bin through the holes on the surface of the filter plate. At this time, the auger discharges the ash under the action of motor No. 1. The workers can collect the ash for secondary use. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of the main body of the device in this utility model;

[0029] Figure 3 This is a cross-sectional three-dimensional structural diagram of the combustion furnace in this utility model;

[0030] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0031] Figure 5 This is a schematic diagram of the connection structure between the fixed frame and the combustion furnace in this utility model;

[0032] Figure 6 This is a schematic diagram of the overall structure of the limiting plate in this utility model;

[0033] Figure 7 This is a three-dimensional structural diagram of the feeding plate and filter plate in this utility model;

[0034] Figure 8 This is a three-dimensional structural diagram of the feeding plate in this utility model.

[0035] In the diagram: 1. Main body of the device; 2. Display panel; 3. Heat exchanger; 4. Combustion furnace; 5. Discharge pipe; 6. Storage silo; 7. Fixing frame; 8. Ventilation plate; 9. Absorbent cotton; 10. Filter plate; 11. Collection silo; 12. Ash removal plate; 13. Screwdriver; 14. Motor No. 1; 15. Motor No. 2; 16. Feeding plate; 17. Connecting rod; 18. Limiting plate; 19. Limiting piece; 20. Fixing piece; 21. Spring. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to embodiments:

[0037] Example 1

[0038] like Figure 3 , Figure 7 and Figure 8 As shown, this utility model provides a high-efficiency combustion device for the combustion chamber of a hot blast stove, including a device body 1; a display panel 2 is fixedly connected to the front end of the device body 1, a heat exchanger 3 is fixedly installed inside the device body 1, a combustion furnace 4 is arranged inside the device body 1, the heat exchanger 3 and the combustion furnace 4 are connected by a pipe, a collection bin 11 is fixedly connected to the bottom of the inner wall of the combustion furnace 4, a discharge pipe 5 is fixedly connected to the middle position of the collection bin 11, an auger 13 is rotatably connected to the inner wall of the discharge pipe 5, and a No. 1 motor 14 is fixedly connected to the side of the collection bin 11 away from the discharge pipe 5.

[0039] Preferably, a storage bin 6 is fixedly connected to the outer wall of the combustion furnace 4, a filter plate 10 is provided on the top of the collection bin 11, the filter plate 10 and the combustion furnace 4 are detachably connected, a second motor 15 is fixedly connected to the bottom of the filter plate 10, a plurality of feeding plates 16 arranged in a circular array are rotatably connected to the side of the filter plate 10 away from the second motor 15, a cleaning plate 12 is slidably connected to the inner wall of the feeding plate 16, a fixing plate 20 is fixedly connected to the top of the cleaning plate 12, the fixing plate 20 and the feeding plate 16 are slidably connected, a plurality of springs 21 arranged in a linear array are fixedly connected to the top of the cleaning plate 12, the cleaning plate 12 and the filter plate 10 are slidably connected, and the bottom of the cleaning plate 12 is set with an incline.

[0040] Because biomass pellets produce ash after combustion, the ash accumulates inside the combustion furnace 4, causing incomplete combustion of subsequently added biomass pellets and resulting in a waste of resources.

[0041] In this embodiment, biomass pellets are fed from the storage bin 6 into the combustion furnace 4 and then piled on the surface of the filter plate 10. The ash generated during the combustion of the biomass pellets falls into the collection bin 11 through the holes on the surface of the filter plate 10. At this time, the auger 13 discharges the ash under the action of the No. 1 motor 14. The staff can collect the ash for secondary use.

[0042] Specifically, to prevent excessive ash accumulation on the surface of filter plate 10 due to excessively rapid combustion, which would hinder the discharge of subsequently added biomass pellets and prevent them from achieving complete combustion, a feeding plate 16 is rotated under the action of motor 15. This prevents the biomass pellets on the surface of filter plate 10 from clumping together. Simultaneously, the cleaning plate 12 at the bottom of the feeding plate 16 is in close contact with the surface of filter plate 10, not only preventing the biomass pellets from clumping together but also effectively cleaning the surface of the filter plate. The ash after burning is swept into the collection bin 11. It should be noted that the ash cleaning plate 12 and the feeding plate 16 are connected by a spring 21. The fixing plate 20 on the surface of the ash cleaning plate 12 can prevent it from detaching from the feeding plate 16. As the feeding plate 16 rotates, the ash cleaning plate 12 moves accordingly. Since its bottom is set at an angle, when it comes into contact with biomass pellets, it retracts into the inside of the feeding plate 16 under the action of the spring 21, so that the ash cleaning plate 12 can only clean the ash after burning, avoiding the clogging of the holes on the surface of the filter plate 10.

[0043] Example 2

[0044] like Figures 3-6 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, a limiting plate 18 is fixedly connected to the top of the inner wall of the combustion furnace 4, a plurality of limiting pieces 19 are fixedly connected to the inner wall of the limiting plate 18, a fixing frame 7 is inserted into the top of the limiting plate 18, a breathable plate 8 is detachably connected to the top of the fixing frame 7, a plurality of plug-in rods 17 that are adapted to the shape and contour of the limiting pieces 19 are fixedly connected to the bottom of the fixing frame 7, the diameter of the inner circle of the limiting piece 19 is smaller than the diameter of the bottom of the plug-in rod 17, and an absorbent cotton 9 is detachably connected to the bottom of the inner wall of the fixing frame 7.

[0045] Because biomass pellets produce harmful gases when burned, the high-temperature hot air they generate cannot be used.

[0046] In this embodiment, the absorbent cotton 9 can effectively absorb harmful gases generated during combustion. When in use, the absorbent cotton 9 is placed inside the fixed frame 7. The flue gas generated by combustion is filtered through the absorbent cotton 9 and the breathable plate 8 before being used. The absorbent cotton 9 can be replaced periodically. It should be noted that the fixed frame 7 can be inserted into the surface of the limiting plate 18 from top to bottom to fix the position of the fixed frame 7. The insertion rod 17 at the bottom of the fixed frame 7 is cylindrical with a notch in the middle. When inserted, the bottom of the insertion rod 17 squeezes the limiting piece 19 and expands outward. After insertion, the limiting piece 19 resets and snaps into the middle position of the insertion rod 17, realizing the connection between the fixed frame 7 and the limiting plate 18.

[0047] The working principle of this high-efficiency combustion device used in the combustion chamber of a hot blast stove is explained in detail below.

[0048] like Figures 1-8 As shown, during operation, biomass pellets are first fed from storage bin 6 into combustion furnace 4. After starting the equipment, the ash produced during the combustion of biomass pellets falls from the holes on the surface of filter plate 10 into collection bin 11. At this time, auger 13 discharges the ash under the action of motor 14, and feeding plate 16 rotates under the action of motor 15. At the same time, the ash-cleaning plate 12 at the bottom of feeding plate 16 is in contact with the surface of filter plate 10, which not only prevents biomass pellets from accumulating, but also sweeps the ash after surface combustion into collection bin 11. The ash-cleaning plate 12 and feeding plate 16 are connected by spring 21. The fixing plate 20 on the surface of ash-cleaning plate 12 can prevent it from detaching from feeding plate 16. During the rotation of feeding plate 16, ash-cleaning plate 12 moves accordingly. Since its bottom is set at an angle, it contracts under the action of spring 21 when it comes into contact with biomass pellets. The feed plate 16 is inserted into the interior of the filter plate 10, so that the cleaning plate 12 can only clean the ash after combustion, avoiding the blockage of the holes on the surface of the filter plate 10. The absorbent cotton 9 can effectively absorb the harmful gases produced during combustion. When in use, the absorbent cotton 9 is placed inside the fixed frame 7. The flue gas produced by combustion is filtered by the absorbent cotton 9 and the breathable plate 8 before it is used. The staff can replace the absorbent cotton 9 regularly. It should be noted that the staff can insert the fixed frame 7 into the surface of the limiting plate 18 from top to bottom to fix the position of the fixed frame 7. The insertion rod 17 at the bottom of the fixed frame 7 is cylindrical with a notch in the middle. When inserted, the bottom of the insertion rod 17 squeezes the limiting piece 19 and expands outward. After insertion, the limiting piece 19 resets and locks into the middle position of the insertion rod 17 to realize the connection between the fixed frame 7 and the limiting plate 18.

[0049] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A high-efficiency combustion device for a hot blast stove combustion chamber, comprising a device body (1); characterized in that: A display panel (2) is fixedly connected to the front end of the main body (1) of the device. A heat exchanger (3) is fixedly installed inside the main body (1). A combustion furnace (4) is installed inside the main body (1). The heat exchanger (3) and the combustion furnace (4) are connected by a pipe. A collection bin (11) is fixedly connected to the bottom of the inner wall of the combustion furnace (4). A discharge pipe (5) is fixedly connected to the middle position of the collection bin (11). An auger (13) is rotatably connected to the inner wall of the discharge pipe (5). A motor (14) is fixedly connected to the side of the collection bin (11) away from the discharge pipe (5).

2. The high-efficiency combustion device for a hot blast stove combustion chamber according to claim 1, characterized in that: A storage bin (6) is fixedly connected to the outer wall of the combustion furnace (4). A filter plate (10) is provided on the top of the collection bin (11). The filter plate (10) and the combustion furnace (4) are detachably connected. A second motor (15) is fixedly connected to the bottom of the filter plate (10). A plurality of feeding plates (16) arranged in a circular array are rotatably connected to the side of the filter plate (10) away from the second motor (15). A cleaning plate (12) is slidably connected to the inner wall of the feeding plate (16).

3. The high-efficiency combustion device for a hot blast stove combustion chamber according to claim 2, characterized in that: Each of the cleaning plates (12) is fixedly connected to a fixing plate (20), the fixing plate (20) and the feeding plate (16) are slidably connected, and each of the cleaning plates (12) is fixedly connected to a plurality of springs (21) arranged in a linear array, and the cleaning plate (12) and the filter plate (10) are slidably connected.

4. A high-efficiency combustion device for a hot blast stove combustion chamber according to claim 3, characterized in that: The bottom of the cleaning plate (12) is sloped.

5. A high-efficiency combustion device for a hot blast stove combustion chamber according to claim 4, characterized in that: A limiting plate (18) is fixedly connected to the top of the inner wall of the combustion furnace (4). Multiple limiting pieces (19) are fixedly connected to the inner wall of the limiting plate (18). A fixing frame (7) is inserted into the top of the limiting plate (18). A vent plate (8) is detachably connected to the top of the fixing frame (7). Multiple plug-in rods (17) that are adapted to the shape and contour of the limiting pieces (19) are fixedly connected to the bottom of the fixing frame (7).

6. A high-efficiency combustion device for a hot blast stove combustion chamber according to claim 5, characterized in that: The diameter of the inner ring of the limiting piece (19) is smaller than the diameter of the bottom of the plug rod (17).

7. A high-efficiency combustion device for a hot blast stove combustion chamber according to claim 6, characterized in that: The bottom of the inner wall of the fixed frame (7) is detachably connected to absorbent cotton (9).

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