Waste incineration afterheat furnace with adjustable heating area
Patent Information
- Application Number
- CN202522464914.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-20
- Publication Date
- 2026-10-13
- Estimated Expiration
- 2035-11-20
AI Technical Summary
传统的垃圾焚烧余热炉在使用过程中存在当烟气温度过高时，固定的受热面可能使换热管束超温，影响设备寿命；当烟气温度偏低时，又会导致热回收效率低下，能源浪费的问题，而烟气中含有大量粉尘、酸性气体及粘性物质，极易在换热管表面结垢和积灰
[0011]与现有技术相比，本实用新型的有益效果是：本可调受热面积的垃圾焚烧余热炉，具有以下好处：
Smart Images
Figure CN224850581U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste heat furnace technology, specifically a waste incineration waste heat furnace with adjustable heating area. Background Technology
[0002] With the acceleration of urbanization, the amount of municipal solid waste continues to increase. Incineration has become the mainstream waste treatment method due to its advantages of volume reduction, harmlessness, and resource recovery. The large amount of high-temperature flue gas generated during waste incineration carries considerable heat energy, which can be recovered and utilized through waste heat boilers, effectively improving the energy efficiency of the entire incineration system. Traditional waste incineration waste heat recovery furnaces face challenges during operation. When the flue gas temperature is too high, the fixed heating surface can cause the heat exchange tube bundle to overheat, affecting the equipment's lifespan. Conversely, when the flue gas temperature is too low, it leads to low heat recovery efficiency and energy waste. Furthermore, the flue gas contains a large amount of dust, acidic gases, and sticky substances, which easily accumulate scale and ash on the heat exchange tube surface. This scale significantly reduces heat exchange efficiency. Therefore, we propose a waste incineration waste heat recovery furnace with an adjustable heating area. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a waste incineration waste heat furnace with adjustable heating area. By dynamically changing the effective heating area of the heat exchange tube through an adjustable shielding mechanism, it can adaptively cope with the temperature fluctuation of waste incineration flue gas, maximize the waste heat recovery efficiency while ensuring equipment safety, and continuously keep the surface of the heat exchange tube clean through mechanical scraping, effectively solving the problem of efficiency reduction caused by ash accumulation. It can effectively solve the problems in the background technology.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a waste incineration waste heat furnace with adjustable heating area, comprising a furnace body and an adjustment unit; Furnace body: Flue gas conveying pipes are provided on both the left and right sides. A flue gas chamber is provided inside the furnace body. The flue gas conveying pipes are connected to the flue gas chamber. The top surface of the furnace body is attached to the bottom surface of the top plate. Heat exchange tubes are evenly installed on the bottom surface of the top plate. The top end of the heat exchange tubes is connected to the bottom end of the gas collecting pipe. Ventilation slots are evenly opened on the front and rear sides inside the furnace body. A cleaning unit is provided inside the furnace body. Adjustment unit: includes jet pipe, mounting head, gas distribution pipe and negative pressure pump. The jet pipe is evenly installed on the front and rear sides inside the flue gas chamber. The mounting head is provided on the surface of the jet pipe. The negative pressure pump is fixed to the surface of the furnace body. The air inlet of the negative pressure pump is connected to the air outlet on the surface of the furnace body. The air outlet of the negative pressure pump is connected to the air inlet of the gas distribution pipe. The air outlet of the gas distribution pipe is inserted and installed with the mounting head. The system also includes a controller, which is fixed on the left side of the furnace body. The input end of the negative pressure air pump is electrically connected to the output end of the controller, and the input end of the controller is electrically connected to the output end of an external power source.
[0005] The negative pressure air pump is started to blow the flue gas inside the flue gas chamber through the ventilation slot to the surface of the heat exchange tube, thereby heating the medium inside the heat exchange tube. This allows the waste heat from the flue gas generated by the combustion of waste to be utilized.
[0006] Furthermore, the adjustment unit also includes a frame, a baffle plate, an adjusting block, a screw, a frame, and a motor. There are two frames, each fixed to the top surface inside the flue gas chamber. A screw is rotatably installed inside each frame. There are two frames, corresponding to each other, fixed to the top of the left side of the furnace body. A motor is mounted on the surface of each frame, and the motor's output shaft is connected to the end of the screw. The adjusting block is evenly slidably installed inside the frame. The screw hole in the middle of the adjusting block is threaded to the outer side of the screw. The inner end of the adjusting block is connected to the outer side of the baffle plate. The baffle plate fits against the inner wall of the flue gas chamber. The input end of the motor is electrically connected to the output end of the controller. Starting the motor drives the screw to rotate, adjusting the position of the baffle plate. This allows for precise control of the effective length of the baffle plate covering the heat exchange tubes, thereby dynamically adjusting the effective heat-receiving area participating in heat exchange. When the flue gas temperature is too high, the covering area can be increased to prevent the heat exchange tubes from overheating and being damaged; conversely, when the flue gas temperature is too low, the covering area can be reduced, fully utilizing thermal energy to ensure that the waste heat recovery efficiency remains at an optimal level.
[0007] Furthermore, the cleaning unit includes a linear motor, a bracket, a support plate, cleaning brushes, a limiting block, and a limiting groove. The linear motor is fixed to the left side of the furnace body. A bracket is installed on the surface of the linear motor's moving part. A support plate is evenly fixed inside the bracket. Cleaning brushes are evenly adhered to the left and right sides of the support plate. The cleaning brushes are in contact with the surface of the heat exchange tubes at corresponding positions. A limiting block is fixed to the right side of the bracket. The limiting groove is opened on the right side of the furnace body. The limiting block and the limiting groove are slidably installed. The input end of the linear motor is electrically connected to the output end of the controller. Starting the linear motor drives the bracket to rise and fall, thereby allowing the cleaning brushes on both sides of the support plate to clean the surface of the heat exchange tubes to prevent the attached ash and scale from affecting the heat exchange efficiency.
[0008] Furthermore, the cleaning unit also includes an ash collection box and a baffle. The ash collection box is slidably installed in the groove at the bottom of the right side of the furnace body. The baffle is fixed at the end of the ash collection box. The dust and other impurities that fall off during cleaning fall into the ash collection box for convenient subsequent unified treatment.
[0009] Furthermore, it also includes fixing bolts and sealing rings. The fixing bolts pass through the through holes on the surface of the top plate and are threaded into the screw holes on the top surface of the furnace body. The sealing rings are fixed to the bottom surface of the top plate. The fixing bolts facilitate the installation of the top plate, and the sealing rings can reduce the gaps at the joints to increase the sealing performance.
[0010] Furthermore, it also includes temperature sensors. There are two temperature sensors installed on both sides of the top surface of the top plate. The output of the temperature sensors is electrically connected to the input of the controller. The temperature sensors can detect the temperature inside the furnace body, thereby adjusting the flue gas delivery volume in real time.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This waste incineration waste heat furnace with adjustable heating area has the following advantages: 1. The position of the baffle plate is adjusted by starting the motor to drive the screw to rotate. This allows for precise control of the effective length of the baffle plate covering the heat exchange tube, thereby dynamically adjusting the effective heat-receiving area involved in heat exchange. When the flue gas temperature is too high, the baffle area can be increased to prevent the heat exchange tube from overheating and being damaged; while when the flue gas temperature is too low, the baffle area can be reduced to make full use of thermal energy and ensure that the waste heat recovery efficiency is always in a better state.
[0012] 2. By starting the linear motor to drive the bracket to rise and fall, the cleaning brushes on both sides of the support plate clean the surface of the heat exchange tubes to prevent the attached dust and scale from affecting the heat exchange efficiency. The dust and other impurities that fall off the cleaning plate fall into the dust collection box for convenient subsequent unified treatment. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the furnace body of this utility model; Figure 3 This is a schematic diagram of the adjustment unit structure of this utility model; Figure 4 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.
[0014] In the diagram: 1 Furnace body, 2 Adjustment unit, 21 Jet pipe, 22 Mounting head, 23 Gas distribution pipe, 24 Negative pressure air pump, 25 Frame, 26 Baffle plate, 27 Adjustment block, 28 Screw, 29 Frame, 210 Motor, 3 Cleaning unit, 31 Linear motor, 32 Bracket, 33 Support plate, 34 Cleaning brush, 35 Limiting block, 36 Limiting groove, 37 Ash collection box, 38 Baffle, 4 Flue gas conveying pipe, 5 Flue gas chamber, 6 Top plate, 7 Heat exchange pipe, 8 Gas collection pipe, 9 Ventilation groove, 10 Fixing bolt, 11 Sealing ring, 12 Temperature sensor, 13 Controller. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figure 1-4 This embodiment provides a technical solution: a waste incineration waste heat furnace with adjustable heating area, including furnace body 1 and adjustment unit 2; Furnace body 1: Flue gas conveying pipes 4 are provided on both the left and right sides. A flue gas chamber 5 is provided inside the furnace body 1, and the flue gas conveying pipes 4 are connected to the flue gas chamber 5. The top surface of the furnace body 1 corresponds to and is attached to the bottom surface of the top plate 6. Heat exchange tubes 7 are evenly installed on the bottom surface of the top plate 6, and the top end of the heat exchange tubes 7 is connected to the bottom end of the gas collecting pipe 8. Ventilation slots 9 are evenly provided on the front and rear sides inside the furnace body 1. A cleaning unit 3 is provided inside the furnace body 1. The cleaning unit 3 includes a linear motor 31, a bracket 32, a support plate 33, a cleaning brush 34, a limiting block 35, and a limiting groove 36. The linear motor 31 is fixed to the left side inside the furnace body 1. A bracket 32 is installed on the surface of the linear motor 31's actuator seat. A support plate 33 is evenly fixed inside the bracket 32. Support plates 33 are evenly bonded to the left and right sides of the support plate 33. The cleaning brush 34 is attached to the surface of the heat exchange tube 7 at the corresponding position. The right side of the bracket 32 is fixed with a limiting block 35. The limiting groove 36 is opened on the right side inside the furnace body 1. The limiting block 35 and the limiting groove 36 are slidably installed. The input end of the linear motor 31 is electrically connected to the output end of the controller 13. The linear motor 31 is started to drive the bracket 32 to rise and fall, so that the cleaning brushes 34 on both sides of the support plate 33 clean the surface of the heat exchange tube 7 to prevent the attached ash and scale from affecting the heat exchange efficiency. The cleaning unit 3 also includes an ash collection box 37 and a baffle 38. The ash collection box 37 is slidably installed in the box groove at the bottom of the right side of the furnace body 1. The end of the ash collection box 37 is fixed with a baffle 38. The dust and other impurities that fall off the cleaning box fall into the ash collection box 37 for convenient subsequent unified treatment. Adjustment unit 2 includes a jet pipe 21, a mounting head 22, a gas distribution pipe 23, and a negative pressure air pump 24. The jet pipe 21 is evenly installed on the front and rear sides inside the flue gas chamber 5. The mounting head 22 is provided on the surface of the jet pipe 21. The negative pressure air pump 24 is fixed to the surface of the furnace body 1. The air inlet of the negative pressure air pump 24 is connected to the air outlet on the surface of the furnace body 1. The air outlet of the negative pressure air pump 24 is connected to the air inlet of the gas distribution pipe 23. The air outlet of the gas distribution pipe 23 is inserted and installed with the mounting head 22. Adjustment unit 2 also includes a frame 25, a baffle plate 26, an adjustment block 27, a screw 28, a frame 29, and a motor 210. There are two frames 25, which are fixed to the top surface inside the flue gas chamber 5. The screw 28 is rotatably installed inside the frame 25. There are two frames 29, which are fixed to the top of the left side of the furnace body 1, front and rear respectively. The surface of the frame 29 is equipped with... Motor 210, the output shaft of motor 210 is connected to the end of screw 28. Adjusting block 27 is evenly slidably installed inside frame 25. The screw hole in the middle of adjusting block 27 is connected to the outer thread of screw 28. The inner end of adjusting block 27 is connected to the outer side of baffle plate 26. Baffle plate 26 fits against the inner wall of flue gas chamber 5. The input end of motor 210 is electrically connected to the output end of controller 13. Starting motor 210 drives screw 28 to rotate to adjust the position of baffle plate 26. This can precisely control the effective length of baffle plate 26 covering heat exchange tube 7, thereby dynamically adjusting the effective heat-receiving area participating in heat exchange. When the flue gas temperature is too high, the covering area can be increased to prevent heat exchange tube 7 from overheating and being damaged; when the flue gas temperature is too low, the covering area can be reduced to make full use of heat energy to ensure that the waste heat recovery efficiency is always in a better state. The system includes a controller 13, which is fixed to the left side of the furnace body 1. The input of the negative pressure air pump 24 is electrically connected to the output of the controller 13, and the input of the controller 13 is electrically connected to the output of an external power supply. When the negative pressure air pump 24 is started, the flue gas inside the flue gas chamber 5 is blown through the ventilation groove 9 to the surface of the heat exchange tube 7, thereby heating the medium inside the heat exchange tube 7. This allows the waste heat generated from the combustion of waste to be utilized. The system also includes fixing bolts 10 and sealing rings 11. The fixing bolts 10 pass through the through holes on the surface of the top plate 6 and are threaded into the screw holes on the top surface of the furnace body 1. The sealing rings 11 are fixed to the bottom surface of the top plate 6. The fixing bolts 10 facilitate the installation of the top plate 6, and the sealing rings 11 reduce the gaps at the joints to increase the sealing performance. The system also includes temperature sensors 12. There are two temperature sensors 12, which are installed on both sides of the top surface of the top plate 6. The output of the temperature sensors 12 is electrically connected to the input of the controller 13. The temperature sensors 12 can detect the temperature inside the furnace body 1, thereby adjusting the flue gas delivery rate in real time.
[0017] The working principle of the waste incineration waste heat furnace with adjustable heating area provided by this utility model is as follows: First, the top plate 6 is installed conveniently using fixing bolts 10, allowing the heat exchange tube 7 on the bottom surface of the top plate 6 to be inserted into the furnace body 1. The sealing ring 11 can reduce the gap at the connection to increase the sealing performance. The flue gas conveying pipe 4 is set to transport the flue gas generated by waste incineration into the flue gas chamber 5. The negative pressure air pump 24 is started to blow the flue gas inside the flue gas chamber 5 through the ventilation groove 9 onto the surface of the heat exchange tube 7, thereby heating the medium inside the heat exchange tube 7. In this way, the waste heat in the flue gas generated by waste combustion can be utilized. The temperature sensor 12 can detect the temperature inside the furnace body 1, thereby starting the motor 210 to drive the screw. 28 is rotated to adjust the position of the baffle plate 26, which can precisely control the effective length of the baffle plate 26 covering the heat exchange tube 7, thereby dynamically adjusting the effective heat-receiving area participating in heat exchange. When the flue gas temperature is too high, the baffle area can be increased to prevent the heat exchange tube 7 from overheating and being damaged; when the flue gas temperature is too low, the baffle area can be reduced to make full use of thermal energy and ensure that the waste heat recovery efficiency is always in a better state. Finally, when it is necessary to clean the heat exchange tube 7, the linear motor 31 is started to drive the bracket 32 to rise and fall, so that the cleaning brushes 34 on both sides of the support plate 33 can clean the surface of the heat exchange tube 7 to prevent the attached dust and scale from affecting the heat exchange efficiency. The dust and other impurities that are cleaned fall into the dust collection box 37 for convenient subsequent unified treatment.
[0018] It is worth noting that the controller 13 disclosed in the above embodiments is provided with buttons on its surface corresponding to the negative pressure air pump 24, motor 210, linear motor 31, and temperature sensor 12. The controller 13 controls the operation of the negative pressure air pump 24, motor 210, linear motor 31, and temperature sensor 12 using methods commonly used in the prior art.
[0019] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A waste incineration waste heat furnace with adjustable heating area, characterized in that: It includes a furnace body (1) and an adjustment unit (2); Furnace body (1): Flue gas conveying pipes (4) are provided on both the left and right sides. A flue gas chamber (5) is provided inside the furnace body (1). The flue gas conveying pipes (4) are connected to the flue gas chamber (5). The top surface of the furnace body (1) is attached to the bottom surface of the top plate (6). Heat exchange tubes (7) are evenly installed on the bottom surface of the top plate (6). The top end of the heat exchange tubes (7) is connected to the bottom end of the gas collecting pipe (8). Ventilation slots (9) are evenly opened on the front and rear sides inside the furnace body (1). A cleaning unit (3) is provided inside the furnace body (1). Adjustment unit (2): includes jet pipe (21), mounting head (22), gas distribution pipe (23) and negative pressure air pump (24). The jet pipe (21) is evenly installed on the front and rear sides inside the flue gas chamber (5). The surface of the jet pipe (21) is provided with mounting head (22). The negative pressure air pump (24) is fixed on the surface of the furnace body (1). The air inlet of the negative pressure air pump (24) is connected to the air outlet on the surface of the furnace body (1). The air outlet of the negative pressure air pump (24) is connected to the air inlet of the gas distribution pipe (23). The air outlet of the gas distribution pipe (23) is inserted into the mounting head (22). Among them, there is also a controller (13), which is fixed on the left side of the furnace body (1). The input end of the negative pressure air pump (24) is electrically connected to the output end of the controller (13), and the input end of the controller (13) is electrically connected to the output end of the external power supply.
2. The waste incineration waste heat furnace with adjustable heating area according to claim 1, characterized in that: The adjustment unit (2) also includes a frame (25), a baffle plate (26), an adjustment block (27), a screw (28), a frame (29), and a motor (210). There are two frames (25) and they are fixed to the top surface inside the flue gas chamber (5). The screw (28) is rotatably installed inside the frame (25). There are two frames (29) and they are fixed to the top of the left side of the furnace body (1) in a front-to-back manner. The motor (210) is installed on the surface of the frame (29). The output shaft of the motor (210) is connected to the end of the screw (28). The adjusting block (27) is evenly slidably installed inside the frame (25). The screw hole in the middle of the adjusting block (27) is threadedly connected to the outer side of the screw (28). The inner end of the adjusting block (27) is connected to the outer side of the baffle plate (26). The baffle plate (26) is in contact with the inner wall of the flue gas chamber (5). The input end of the motor (210) is electrically connected to the output end of the controller (13).
3. The waste incineration waste heat furnace with adjustable heating area according to claim 1, characterized in that: The cleaning unit (3) includes a linear motor (31), a bracket (32), a support plate (33), a cleaning brush (34), a limiting block (35), and a limiting groove (36). The linear motor (31) is fixed on the left side inside the furnace body (1). The bracket (32) is installed on the surface of the moving part of the linear motor (31). The support plate (33) is evenly fixed inside the bracket (32). The cleaning brush (34) is evenly bonded to the left and right sides of the support plate (33). The cleaning brush (34) is in contact with the surface of the heat exchange tube (7) at the corresponding position. The limiting block (35) is fixed on the right side of the bracket (32). The limiting groove (36) is opened on the right side inside the furnace body (1). The limiting block (35) and the limiting groove (36) are slidably installed. The input end of the linear motor (31) is electrically connected to the output end of the controller (13).
4. A waste incineration waste heat furnace with adjustable heating area according to claim 3, characterized in that: The cleaning unit (3) also includes an ash collection box (37) and a baffle (38). The ash collection box (37) is slidably installed in the groove at the bottom right side of the furnace body (1). The baffle (38) is fixed at the end of the ash collection box (37).
5. A waste incineration waste heat furnace with adjustable heating area according to claim 1, characterized in that: It also includes a fixing bolt (10) and a sealing ring (11). The fixing bolt (10) is threaded through the through hole on the surface of the top plate (6) and the screw hole on the top surface of the furnace body (1). The sealing ring (11) is fixed to the bottom surface of the top plate (6).
6. A waste incineration waste heat furnace with adjustable heating area according to claim 1, characterized in that: It also includes a temperature sensor (12), of which there are two and are respectively installed on both sides of the top surface of the top plate (6), and the output of the temperature sensor (12) is electrically connected to the input of the controller (13).