Boiler flue system with non-stop soot cleaning function
Patent Information
- Application Number
- CN202522131872.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-09
AI Technical Summary
[0003]在锅炉运行过程中，长时间燃烧产生的烟灰会在烟道内壁逐渐积累形成结块，堵塞烟道气流，进而严重阻碍热传导，大幅降低锅炉效率，所以，需要定期将锅炉停机，对烟道进行清理，由于锅炉的启动与停机需要经历繁琐的一系列流程，导致锅炉效率大大降低
[0014]通过采用上述技术方案，由位移电机驱动位移丝杆旋转，进而带动与位移丝杆螺纹配合的位移座沿位移导杆竖向移动，将传统定点振打的振打器改进为多点振打，从而增加振打范围，使竖直部各处的结块均能与内壁稳定分离，保证分离效果。
Smart Images
Figure CN224801689U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste incineration equipment, specifically to a boiler flue system with a non-stop ash removal function. Background Technology
[0002] Inside a waste incineration plant, a boiler is a device specifically designed to process municipal solid waste and convert the heat generated from its combustion into steam or electricity, while a flue is a pipe located inside and at the tail of the boiler that guides and transports the high-temperature flue gas generated during combustion.
[0003] During boiler operation, the soot produced by long-term combustion will gradually accumulate on the inner wall of the flue, forming clumps that block the airflow and severely hinder heat conduction, thus greatly reducing boiler efficiency. Therefore, it is necessary to shut down the boiler regularly and clean the flue. However, the boiler startup and shutdown process involves a series of complicated procedures, which greatly reduces boiler efficiency. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a boiler flue system with non-stop ash cleaning function to improve boiler efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a flue base fixed to a boiler, wherein multiple flues are arranged side-by-side in a transverse direction. Each flue includes a vertical section and a horizontal section. The horizontal section connects to the side of the vertical section, and the other end of the horizontal section connecting to the vertical section serves as a flue inlet connected to the boiler. The upper end of the vertical section serves as a flue outlet. It also includes a front shut-off valve, a rear shut-off valve, an air inlet pipe, a rapping device, a crushing device, a sealing transfer device, and a pneumatic transmission device. The front shut-off valve is located in the horizontal section and is used to control the opening and closing of the flue inlet. The air inlet pipe is connected to a clean gas source and connects to the flue inlet. After closing, clean gas is introduced into the horizontal section. An air inlet valve is installed at the connection between the air inlet pipe and the horizontal section. The rear shut-off valve is installed in the vertical section and is used to control the opening and closing of the smoke outlet. The rapping device separates the clumps from the inner wall of the vertical section. A crushing chamber for receiving fallen clumps is connected to the lower part of the vertical section. The crushing device crushes the clumps in the crushing chamber into clump particles. A collection hopper is connected to the lower part of the crushing chamber. The sealing and transfer device is installed below the collection hopper and seals and transfers the clump particles to the pneumatic transmission device located below. The pneumatic transmission device pneumatically transmits the clump particles to the clump collection point.
[0006] By adopting the above technical solution, when one of the flues needs to be cleaned, the front shut-off valve of the flue will close the inlet. Then, clean gas will be introduced into the horizontal section through the air inlet pipe, squeezing out the toxic and harmful fumes that were originally stuck in the vertical and horizontal sections from the outlet. Next, the rear shut-off valve of the flue will close the outlet, forming a stable flue environment. Then, the rapping device will separate the clumps from the inner wall of the vertical section. The separated clumps will fall into the crushing chamber and be crushed into clump particles by the crushing device. Finally, the clump particles that fall into the collection hopper will be sealed and transferred to the pneumatic transmission device by the sealing transfer device. The pneumatic transmission device will then transport them to the clump collection point for unified processing. After the clumps are discharged, the front and rear shut-off valves will be opened to restore the normal function of the flue. The above structure has the following advantages: ① The parallel flue structure design allows other flues to operate normally while one flue is in the ash removal state, eliminating the need to shut down the boiler and avoiding time wastage caused by boiler start-up and shutdown, thus effectively improving boiler efficiency; ② Collecting and transferring agglomerates outside the flue prevents secondary blockage caused by large agglomerates; ③ After the flue inlet is sealed, clean gas is introduced first to discharge toxic and harmful gases from the flue, ensuring no danger even if leakage occurs during sealed transfer; ④ The front and rear shut-off valves create a stable environment inside the flue, making the agglomerate fall more stable, ensuring ash removal efficiency, and preventing backflow of toxic and harmful gases; ⑤ Before transferring the agglomerates outside the flue, they are broken up to reduce gas leakage during sealed transfer while ensuring smooth pneumatic transmission; ⑥ Airflow transmission is preferred as the agglomerate transmission method, making reasonable use of its fully enclosed transmission characteristics, which is environmentally friendly and safe.
[0007] The present invention is further configured such that: the crushing device includes two crushing shafts arranged laterally and located on both sides of the longitudinal direction, the crushing shafts pass through each crushing chamber, a crushing motor is provided outside the crushing shaft to drive its rotation, and a spiral crushing blade is provided in each crushing chamber, and the crushing blades located between the two crushing shafts are relatively overlapping laterally.
[0008] By adopting the above technical solution, the crushing function of multiple crushing chambers can be realized by using two crushing shafts and two crushing motors, making the system structure more streamlined. In the non-dust-cleaning vertical section, clumps will separate from the inner wall due to the vibration of adjacent vertical sections. Therefore, the crushing blades of the crushing chamber in the non-dust-cleaning section also need to rotate continuously to ensure that the clumps in this part are crushed and stored in the collection hopper, avoiding blockage at the corner of the vertical and horizontal sections and improving practicality.
[0009] The present invention is further configured such that: the sealed transfer device includes a transfer pipe arranged vertically below the collection hopper and connected to the bottom of the collection hopper; an upper transfer valve and a lower transfer valve are respectively provided at the upper and lower ends of the transfer pipe to control the opening and closing of the transfer pipe; and the space between the upper transfer valve and the lower transfer valve is used as a transfer space.
[0010] By adopting the above technical solution, the upper transfer valve is first opened to connect the transfer space with the collection hopper, and the agglomerated particles fall into the transfer space. After the transfer space is filled with agglomerated particles, the upper transfer valve is closed and the lower transfer valve is opened, and the agglomerated particles in the transfer space fall into the pneumatic transmission device. This avoids direct connection between the vertical section and the pneumatic transmission device, reduces the leakage of flue gas in the vertical section to the pneumatic transmission device, and ensures the transmission effect of the pneumatic transmission device.
[0011] The present invention is further configured such that: the pneumatic transmission device includes a gas transmission pipeline and a pneumatic conveying pump, the gas transmission pipeline is arranged horizontally and connected to the lower end of each transfer pipeline, one end of the pneumatic transmission pipeline is used to install the pneumatic conveying pump, and the other end extends to the agglomeration collection point.
[0012] By adopting the above technical solution, a single pneumatic transmission pipeline can realize the function of conveying agglomerates in multiple flues, making the system structure more streamlined.
[0013] The present invention is further configured such that: the vibrating device is respectively configured corresponding to each vertical section; the vibrating device includes an upper vibrating seat and a lower vibrating seat fixed to the outer wall of the vertical section and arranged vertically; a displacement guide rod is arranged vertically between the upper vibrating seat and the lower vibrating seat; a displacement seat is slidably arranged on the displacement guide rod; a vibrator is arranged on the displacement seat; the vibrator emits high-frequency vibrations to the outer wall of the vertical section to separate the agglomerates from the inner wall of the vertical section; a displacement motor is arranged above the upper vibrating seat; and a displacement screw is arranged vertically below the displacement motor, passing through the displacement seat and threadedly engaged with the displacement seat.
[0014] By adopting the above technical solution, the displacement motor drives the displacement screw to rotate, which in turn drives the displacement seat that is threaded with the displacement screw to move vertically along the displacement guide rod. This improves the traditional fixed-point vibration device into a multi-point vibration device, thereby increasing the vibration range and ensuring that the clumps in all vertical parts can be stably separated from the inner wall, thus guaranteeing the separation effect. Attached Figure Description
[0015] Figure 1 The three-dimensional representation of the specific embodiment of this utility model Figure 1 ; Figure 2 The three-dimensional representation of the specific embodiment of this utility model Figure 2 ; Figure 3This is a structural schematic diagram of a specific embodiment of the present utility model. Detailed Implementation
[0016] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0017] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0018] like Figure 1 — Figure 3As shown, this utility model discloses a boiler flue system with non-stop ash removal function, including a flue base 1 fixed to the boiler. Multiple flues are arranged side-by-side in the flue base 1 along the horizontal direction. Each flue includes a vertical section 3 and a horizontal section 2. The horizontal section 2 connects to the side of the vertical section 3. The other end of the horizontal section 2 connecting to the vertical section 3 serves as a flue inlet 21 connected to the boiler. The upper end of the vertical section 3 serves as a flue outlet 31. The system also includes a front shut-off valve 22 (preferably an electric ball valve), a rear shut-off valve 32 (preferably an electric butterfly valve), an air inlet pipe 23, a rapping device, a crushing device, and a sealing rotary valve. The system includes a moving device and a pneumatic transmission device. A front shut-off valve 22 is located in the horizontal section 2 and controls the opening and closing of the smoke inlet 21. An air inlet pipe 23 is connected to a clean gas source and supplies clean gas to the horizontal section 2 after the smoke inlet 21 is closed. An air inlet valve 24 (preferably an electric ball valve) is located at the connection between the air inlet pipe 23 and the horizontal section 2. A rear shut-off valve 32 is located in the vertical section 3 and controls the opening and closing of the smoke outlet 31. A rapping device separates the agglomerates from the inner wall of the vertical section 3. A crushing chamber 33 is connected below the vertical section 3 to receive the falling agglomerates. The crushing device breaks down the agglomerates in the crushing chamber 33 into small particles. A collection hopper 34 is connected below the crushing chamber 33. A sealing and transferring device is located below the collection hopper 34 and seals and transfers the agglomerates to a pneumatic transmission device located below. The pneumatic transmission device pneumatically transmits the agglomerates to the agglomerate collection point, which is generally a collection tank. When one of the flues needs cleaning, the front shut-off valve 22 of that flue closes the inlet 21. Then, the air inlet pipe 23 introduces clean gas into the horizontal section 2, removing the agglomerates that were originally stuck in the vertical section 3 and the horizontal section 2. Toxic and harmful fumes are expelled from the smoke outlet 31. Next, the rear shut-off valve 32 of the flue seals the smoke outlet 31, forming a stable flue environment. Then, the rapping device separates the clumps from the inner wall of the vertical section 3. The separated clumps fall into the crushing chamber 33 and are crushed into clump particles by the crushing device. Finally, the clump particles that fall into the collection hopper 34 are sealed and transferred to the pneumatic transmission device by the sealing transfer device. The pneumatic transmission device then transports them to the clump collection point for unified processing. After the clumps are discharged, the front shut-off valve 22 and the rear shut-off valve 32 are opened to restore the normal function of the flue.The above structure has the following advantages: ① The parallel flue structure design allows other flues to operate normally while one flue is in the ash removal state, eliminating the need to shut down the boiler and avoiding time wastage caused by boiler start-up and shutdown, thus effectively improving boiler efficiency; ② Collecting and transferring agglomerates outside the flue prevents secondary blockage caused by large agglomerates; ③ After the flue inlet 21 is sealed, clean gas is introduced first to discharge toxic and harmful gases from the flue, ensuring no danger even if leakage occurs during sealed transfer; ④ The front shut-off valve 22 and the rear shut-off valve 32 create a stable environment inside the flue, making the agglomerate fall more stable, ensuring ash removal efficiency, and preventing backflow of toxic and harmful gases; ⑤ Before transferring the agglomerates outside the flue, the agglomerates are broken up, reducing gas leakage during sealed transfer while ensuring smooth pneumatic transmission; ⑥ Airflow transmission is preferred as the agglomerate transmission method, making reasonable use of its fully enclosed transmission characteristics, which is environmentally friendly and safe.
[0019] The crushing device includes two crushing shafts 4 arranged laterally and located on both sides of the longitudinal direction. The crushing shafts 4 pass through each crushing chamber 33. A crushing motor 41 is installed outside the crushing chamber 33 to drive the crushing shafts 4 to rotate. Spiral crushing blades 42 are respectively installed inside each crushing chamber 33. The crushing blades 42 located between the two crushing shafts 4 are relatively horizontally overlapping. The two crushing shafts 4 and the two crushing motors 41 can realize the crushing function of multiple crushing chambers 33, making the system structure more streamlined. In the non-dust-cleaning vertical section 3, clumps will separate from the inner wall due to the vibration of adjacent vertical sections 3. Therefore, the crushing blades 42 of the crushing chamber 33 in the non-dust-cleaning section also need to rotate continuously to ensure that the clumps are crushed and stored in the collection hopper 34, avoiding blockage at the corner of the vertical section 3 and the horizontal section 2, and improving practicality.
[0020] The sealing transfer device includes a transfer pipe 5 vertically positioned below the collection hopper 34 and connected to the bottom of the collection hopper 34. An upper transfer valve 51 and a lower transfer valve 52, controlling the opening and closing of the transfer pipe 5, are respectively installed at its upper and lower ends. The upper transfer valve 51 and lower transfer valve 52 are preferably pneumatic gate valves. The space between the upper transfer valve 51 and lower transfer valve 52 in the transfer pipe 5 serves as a transfer space 53. First, the upper transfer valve 51 is opened, connecting the transfer space 53 to the collection hopper 34, allowing agglomerated particles to fall into the transfer space 53. Once the transfer space 53 is full of agglomerated particles, the upper transfer valve 51 closes, and the lower transfer valve 52 opens, allowing the agglomerated particles in the transfer space 53 to fall into the pneumatic transmission device. This prevents direct connection between the vertical section 3 and the pneumatic transmission device, reducing the leakage of flue gas from the vertical section 3 to the pneumatic transmission device while ensuring the transmission effect of the pneumatic transmission device.
[0021] The pneumatic transmission device includes a gas transmission pipeline 6 and a pneumatic conveying pump 61. The gas transmission pipeline 6 is arranged horizontally and connected to the lower end of each transfer pipeline 5. One end of the pneumatic transmission pipeline is used to install the pneumatic conveying pump 61, and the other end extends to the agglomeration collection point. A single pneumatic transmission pipeline realizes the agglomeration conveying function of multiple flues, making the system structure more streamlined.
[0022] The rapping devices are respectively installed corresponding to each vertical section 3. The rapping device includes an upper rapping seat 71 and a lower rapping seat 72 fixed to the outer wall of the vertical section 3 and arranged vertically. A displacement guide rod 73 is arranged vertically between the upper rapping seat 71 and the lower rapping seat 72. A displacement seat 7 is slidably mounted on the displacement guide rod 73. A rapper 74 is mounted on the displacement seat 7. The rapper 74 emits high-frequency vibrations to the outer wall of the vertical section 3 to separate the agglomerates from the inner wall of the vertical section 3. A rapping device is installed above the upper rapping seat 71. A displacement motor 75 is installed below which a displacement screw 76 passes through a displacement seat 7 and is threadedly engaged with the displacement seat 7. The displacement motor 75 drives the displacement screw 76 to rotate, which in turn drives the displacement seat 7, which is threadedly engaged with the displacement screw 76, to move vertically along the displacement guide rod 73. This improves the traditional fixed-point vibration device 74 into multi-point vibration, thereby increasing the vibration range and ensuring that the clumps in all vertical parts can be stably separated from the inner wall, thus ensuring the separation effect.
[0023] In addition, this system is equipped with a controller that coordinates the operation of various electrical control devices.
Claims
1. A boiler flue system with non-stop ash removal function, comprising a flue base fixed to the boiler, characterized in that: The flue base has multiple flues arranged side-by-side in a transverse direction. Each flue includes a vertical section and a horizontal section. The horizontal section connects to the side of the vertical section, and the other end of the horizontal section connecting to the vertical section serves as a flue inlet connected to the boiler. The upper end of the vertical section serves as a flue outlet. The system also includes a front shut-off valve, a rear shut-off valve, an intake pipe, a rapping device, a crushing device, a sealing transfer device, and a pneumatic transmission device. The front shut-off valve is located in the horizontal section and is used to control the opening and closing of the flue inlet. The intake pipe is connected to a clean gas source and introduces clean gas into the horizontal section after the flue inlet is closed. An air inlet valve is installed at the connection between the gas pipeline and the horizontal section. The rear shut-off valve is located in the vertical section and is used to control the opening and closing of the smoke outlet. The rapping device separates the clumps from the inner wall of the vertical section. A crushing chamber for receiving fallen clumps is connected below the vertical section. The crushing device crushes the clumps in the crushing chamber into clump particles. A collection hopper is connected below the crushing chamber. A sealing and transfer device is located below the collection hopper and seals and transfers the clump particles to a pneumatic transmission device located below. The pneumatic transmission device pneumatically transmits the clump particles to the clump collection point.
2. The boiler flue system with non-stop ash removal function according to claim 1, characterized in that: The crushing device includes two crushing shafts arranged laterally and located on both sides of the longitudinal direction. The crushing shafts pass through each crushing chamber. A crushing motor that drives the crushing shaft to rotate is located outside the crushing chamber. Spiral crushing blades are respectively arranged in each crushing chamber. The crushing blades located between the two crushing shafts are relatively overlapping laterally.
3. The boiler flue system with non-stop ash removal function according to claim 1, characterized in that: The sealing transfer device includes a transfer pipe that is vertically arranged below the collection hopper and connected to the bottom of the collection hopper. An upper transfer valve and a lower transfer valve are respectively provided at the upper and lower ends of the transfer pipe to control the opening and closing of the transfer pipe. The space between the upper transfer valve and the lower transfer valve serves as a transfer space.
4. The boiler flue system with non-stop ash removal function according to claim 3, characterized in that: The pneumatic transmission device includes a gas transmission pipeline and a pneumatic conveying pump. The gas transmission pipeline is arranged horizontally and connected to the lower end of each transfer pipeline. One end of the pneumatic transmission pipeline is used to install the pneumatic conveying pump, and the other end extends to the agglomeration collection point.
5. The boiler flue system with non-stop ash removal function according to claim 1, characterized in that: The aforementioned rapping devices are respectively set up corresponding to each vertical section. The rapping device includes an upper rapping seat and a lower rapping seat fixed to the outer wall of the vertical section and arranged vertically. A displacement guide rod is arranged vertically between the upper rapping seat and the lower rapping seat. A displacement seat is slidably arranged on the displacement guide rod. A rapper is arranged on the displacement seat. The rapper emits high-frequency vibrations to the outer wall of the vertical section to separate the agglomerates from the inner wall of the vertical section. A displacement motor is arranged above the upper rapping seat. A displacement screw is arranged vertically below the displacement motor, passing through the displacement seat and threadedly engaged with the displacement seat.