Anti-blocking device for ash conveying system of thermal power plant
Patent Information
- Application Number
- CN202522282734.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-28
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-28
AI Technical Summary
[0004]针对现有技术的不足，本实用新型提供了一种火电厂输灰系统防堵装置，以解决上述背景技术中提出的输料通道堵塞，进而造成输灰系统中断，一旦发生堵塞，需停机拆解管道进行清理，影响输灰效率的问题
[0016]该火电厂输灰系统防堵装置，加设的第一电机能够带动同轴的转动杆转动，进而使打散叶片对进入进料箱的灰料进行打散处理，能有效避免灰料在进料阶段因结块形成较大颗粒而造成后续通道堵塞；进料箱底部的出料管将灰料导入第一输料管，再经第一输料管进入第二输料管，且第一输料管与第二输料管表面的第二电机可驱动同轴的绞龙转动，绞龙的转动能对灰料形成持续的推送力，进一步降低输料过程中的堵塞风险；第二输料管出料端的输送管易堵塞处设置的反吹风机，能够通过与输送管相连的连接块向输送管内吹送气流，气流能对输送管内可能形成堵塞的灰料进行冲击和清理，及时疏通易堵部位，从而通过各结构的协同作用，从灰料打散、持续输送到易堵点主动清理的多个环节，实现对输灰系统的防堵效果，保障输灰系统的稳定运行。
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Figure CN224869405U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of anti-blocking devices, specifically an anti-blocking device for an ash conveying system in a thermal power plant. Background Technology
[0002] Thermal power plants generate a large amount of fly ash during the coal combustion process in boilers. The ash conveying system is a key piece of equipment in thermal power plants that transports this fly ash from collection equipment such as dust collectors to ash storage or reuse devices. Its operational stability is directly related to the environmental emission indicators and overall production efficiency of thermal power plants, and it is an indispensable part of the auxiliary systems of thermal power plants.
[0003] In existing thermal power plant ash conveying systems, the feeding structure typically lacks a pre-treatment and dispersing mechanism for ash. During collection and temporary storage, fly ash is prone to agglomeration due to factors such as accumulation pressure, forming lumps or large particles. Once these particles enter the conveying channel, they can easily get stuck on the inner wall of the pipe, at bends, or at the junctions with other components, causing blockages and ultimately disrupting the ash conveying system. Furthermore, existing ash conveying systems often rely on pneumatic or simple gravity conveying methods, lacking a continuous and stable pushing structure. Ash is prone to stagnation due to insufficient power during long-distance transport or at pipe diameter changes. Moreover, the easily blocked sections of the conveying pipe lack active cleaning mechanisms; once a blockage occurs, the system must be shut down and the pipe disassembled for cleaning, impacting ash conveying efficiency. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an anti-blocking device for the ash conveying system of a thermal power plant, which solves the problem mentioned in the background art of material conveying channel blockage, which leads to the interruption of the ash conveying system. Once blockage occurs, the system needs to be shut down and the pipeline disassembled for cleaning, affecting the ash conveying efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-clogging device for an ash conveying system in a thermal power plant, comprising:
[0006] The feed box has a first motor installed at both the front and rear of its surface. The rotor of each first motor is coaxially mounted with a rotating rod, and the surface of the rotating rod is evenly distributed with dispersing blades.
[0007] A discharge pipe is located at the bottom of the feed box. A first conveying pipe is installed at the discharge port of the discharge pipe, and a second conveying pipe is installed at the discharge port of the first conveying pipe.
[0008] The second motor is mounted on the surface of the first and second conveying pipes. The rotor of the second motor is coaxially mounted with an auger. The discharge end of the second conveying pipe is equipped with a conveying pipe.
[0009] A backflow blower is installed at a point on the conveying pipe that is prone to clogging. The outlet of the backflow blower is equipped with a connecting block, which is connected to the surface of the conveying pipe.
[0010] Preferably, a blower is installed on the surface of the conveying pipe. Both the first and second conveying pipes are installed at the bottom of the feed box. The blower can provide additional airflow assistance during the conveying process, further preventing material from accumulating and clogging inside the conveying pipe.
[0011] Preferably, the dispersing blades are arranged in an alternating pattern, and the bottom of the feed box is designed in a funnel shape, which can more thoroughly disperse the material entering the feed box and prevent large pieces of material from directly entering the conveying pipe and causing blockage. The funnel shape design allows the material to naturally converge towards the bottom center, which facilitates the material to smoothly enter the discharge pipe and reduces the residue and blockage of material at the bottom of the feed box.
[0012] Preferably, the connecting block communicates with the inner cavity of the conveying pipe, and a dustproof net is installed on the surface of the connecting block. The dustproof net can prevent external dust and other impurities from entering the conveying pipe, avoid blockage caused by changes in the material properties due to impurities, and also protect the inside of the blower from dust.
[0013] Preferably, an mounting plate is installed on the surface of the connecting block, and a bolt is screwed between the mounting plate and the conveying pipe. The bolt connection between the mounting plate and the conveying pipe facilitates the installation and disassembly of the connecting block. When maintenance of the blower or the connecting block is required, the connecting block can be easily removed, improving maintenance efficiency.
[0014] Preferably, a sealing plate is installed at the bottom of the connecting block, and a threaded rod is screwed onto the bottom of the sealing plate. The sealing plate can prevent material from leaking from the bottom of the connecting block, ensuring a relatively sealed working environment for the blower, and also facilitating cleaning of the inside of the connecting block.
[0015] Compared with the prior art, this utility model provides an anti-clogging device for the ash conveying system of a thermal power plant, which has the following beneficial effects:
[0016] The anti-clogging device for the ash conveying system of this thermal power plant features a first motor that drives a coaxial rotating rod to break up the ash material entering the feed hopper. This effectively prevents the ash material from caking into large particles and causing blockages in subsequent channels. The discharge pipe at the bottom of the feed hopper guides the ash material into the first conveying pipe, and then into the second conveying pipe. Second motors on the surfaces of both the first and second conveying pipes drive a coaxial auger to rotate. The auger's rotation provides a continuous pushing force on the ash material, further reducing the risk of blockage during conveying. A backflow blower is installed at the easily clogged section of the second conveying pipe's discharge end. This blower, connected to a connecting block, delivers airflow into the conveying pipe. The airflow impacts and clears any ash material that may cause blockages, promptly unblocking easily clogged areas. Through the synergistic effect of these components, from ash material breaking up and continuous conveying to proactive cleaning of easily clogged points, the anti-clogging effect of the ash conveying system is achieved, ensuring its stable operation. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a cross-sectional view of the feed box of this utility model;
[0019] Figure 3 This is a schematic diagram of the connecting block of this utility model.
[0020] In the diagram: 1. Feed box; 2. First motor; 3. Rotating rod; 4. Dispersing blades; 5. Discharge pipe; 6. First conveying pipe; 7. Second conveying pipe; 8. Second motor; 9. Screw; 10. Conveying pipe; 11. Back blower; 12. Connecting block; 13. Blower; 14. Dustproof net; 15. Mounting plate; 16. Bolt; 17. Sealing plate; 18. Threaded rod. Detailed Implementation
[0021] 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.
[0022] This utility model provides a technical solution: an anti-clogging device for an ash conveying system in a thermal power plant. (Please refer to...) Figure 1 Including feed box 1, please refer to Figure 2 The front and rear of the feed box 1 are equipped with a first motor 2. The rotor of the first motor 2 is coaxially mounted with a rotating rod 3. The surface of the rotating rod 3 is evenly distributed with dispersing blades 4.
[0023] The discharge pipe 5 is located at the bottom of the feed box 1. The discharge port of the discharge pipe 5 is equipped with a first conveying pipe 6, and the discharge port of the first conveying pipe 6 is equipped with a second conveying pipe 7.
[0024] The second motor 8 is mounted on the surface of both the first conveying pipe 6 and the second conveying pipe 7. The rotor of the second motor 8 is coaxially mounted with an auger 9. (See also...) Figure 1 The discharge end of the second conveying pipe 7 is equipped with a conveying pipe 10;
[0025] A backflow blower 11 is installed at a clogged section of the delivery pipe 10. A connecting block 12 is installed at the air outlet of the backflow blower 11, and the connecting block 12 is connected to the surface of the delivery pipe 10.
[0026] The first motor 2, mounted on the front and rear of the feed box 1, drives the coaxial rotating rod 3 to rotate, thereby causing the evenly distributed dispersing blades 4 on the surface of the rotating rod 3 to disperse the ash material entering the feed box 1. This effectively prevents the ash material from forming large particles due to agglomeration during the feeding stage, which could cause blockage of subsequent channels. The discharge pipe 5 at the bottom of the feed box 1 guides the ash material into the first conveying pipe 6, and then into the second conveying pipe 7. The second motor 8 on the surface of the first conveying pipe 6 and the second conveying pipe 7 can drive the coaxial auger 9 to rotate. The rotation of the auger 9 can generate a continuous pushing force on the ash material, reducing the ash material's density. The probability of material accumulating in the first conveying pipe 6 and the second conveying pipe 7 is reduced, further lowering the risk of blockage during the conveying process. The back-blowing fan 11 installed at the easily blocked part of the conveying pipe 10 at the outlet end of the second conveying pipe 7 can blow air into the conveying pipe 10 through the connecting block 12 connected to the conveying pipe 10. The airflow can impact and clean the ash material that may form a blockage in the conveying pipe 10, and clear the easily blocked parts in time. Thus, through the synergistic effect of each structure, from the ash material dispersal and continuous conveying to the active cleaning of the easily blocked points, the anti-blockage effect of the ash conveying system is achieved, ensuring the stable operation of the ash conveying system.
[0027] A blower 13 is installed on the surface of the conveying pipe 10. The first conveying pipe 6 and the second conveying pipe 7 are both installed at the bottom of the feed box 1. The blower 13 can provide additional airflow assistance during the conveying process to further prevent materials from accumulating and clogging in the conveying pipe 10.
[0028] The interconnected dispersing blades 4 are arranged in an alternating pattern, and the bottom of the feed box 1 is designed in a funnel shape, which can more thoroughly disperse the material entering the feed box 1 and prevent large pieces of material from directly entering the conveying pipe and causing blockage. The funnel shape design allows the material to naturally converge towards the bottom center, making it easier for the material to smoothly enter the discharge pipe 5 and reducing material residue and blockage at the bottom of the feed box 1.
[0029] Please see Figure 3The connecting block 12 is connected to the inner cavity of the conveying pipe 10. A dustproof net 14 is installed on the surface of the connecting block 12. The dustproof net 14 can prevent external dust and other impurities from entering the conveying pipe 10, avoid blockage caused by changes in material properties due to impurities, and also protect the inside of the back blower 11 from dust.
[0030] A mounting plate 15 is installed on the surface of the connecting block 12. A bolt 16 is screwed between the mounting plate 15 and the conveying pipe 10. The mounting plate 15 and the conveying pipe 10 are connected by the bolt 16, which facilitates the installation and disassembly of the connecting block 12. When it is necessary to maintain the blower 11 or the connecting block 12, the connecting block 12 can be easily removed, thus improving maintenance efficiency.
[0031] A sealing plate 17 is installed at the bottom of the connecting block 12, and a threaded rod 18 is screwed onto the bottom of the sealing plate 17. The sealing plate 17 can prevent material from leaking from the bottom of the connecting block 12, ensuring a relatively sealed working environment for the back blower 11, and also facilitating the cleaning of the inside of the connecting block 12.
[0032] In this design: The first motor 2 at the front and rear of the feed box 1 drives the coaxial rotating rod 3 to rotate, causing the staggered dispersing blades 4 on the surface to break up the incoming ash material, preventing clumping. The funnel-shaped design at the bottom of the feed box 1 allows the material to naturally converge into the discharge pipe 5. The discharge pipe 5 guides the ash material through the first conveying pipe 6 into the second conveying pipe 7. The second motor 8 on the surfaces of the first and second conveying pipes 6 and 7 drives the coaxial auger 9 to rotate, continuously pushing the ash material and reducing accumulation. The second conveying pipe 7's discharge end... At points in pipe 10 prone to clogging, the back-blowing fan 11 blows air through the connecting block 12, which communicates with the inner cavity of the conveying pipe 10 and has a dustproof net 14 on its surface, to impact and clear any ash material that may be clogging it. At the same time, the blower 13 on the surface of the conveying pipe 10 provides additional airflow assistance. In addition, the surface of the connecting block 12 is connected to the conveying pipe 10 through the mounting plate 15 and bolts 16, which facilitates disassembly and maintenance. The bottom sealing plate 17 and threaded rod 18 prevent material leakage. Through the coordinated operation of these structures, the ash conveying system is prevented from clogging, ensuring stable operation.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A clog prevention device for an ash conveying system in a thermal power plant, characterized in that, include: Feed box (1), the front and rear of the surface of the feed box (1) are equipped with a first motor (2), the rotor of the first motor (2) is coaxially equipped with a rotating rod (3), and the surface of the rotating rod (3) is evenly distributed with dispersing blades (4); The discharge pipe (5) is located at the bottom of the feed box (1). The discharge port of the discharge pipe (5) is equipped with a first conveying pipe (6), and the discharge port of the first conveying pipe (6) is equipped with a second conveying pipe (7). The second motor (8) is disposed on the surface of the first conveying pipe (6) and the second conveying pipe (7). The rotor of the second motor (8) is coaxially mounted with an auger (9). The discharge end of the second conveying pipe (7) is equipped with a conveying pipe (10). A backflow blower (11) is installed at a blockage point of the conveying pipe (10). A connecting block (12) is installed at the air outlet of the backflow blower (11), and the connecting block (12) is connected to the surface of the conveying pipe (10).
2. The anti-clogging device for an ash conveying system in a thermal power plant according to claim 1, characterized in that: A blower (13) is installed on the surface of the conveying pipe (10), and the first conveying pipe (6) and the second conveying pipe (7) are both installed at the bottom of the feed box (1).
3. The anti-clogging device for an ash conveying system in a thermal power plant according to claim 1, characterized in that: The dispersing blades (4) are arranged in an alternating pattern, and the bottom of the feed box (1) is designed in a funnel shape.
4. The anti-clogging device for an ash conveying system in a thermal power plant according to claim 1, characterized in that: The connecting block (12) communicates with the inner cavity of the conveying pipe (10), and a dustproof net (14) is installed on the surface of the connecting block (12).
5. The anti-clogging device for an ash conveying system in a thermal power plant according to claim 1, characterized in that: The surface of the connecting block (12) is fitted with an mounting plate (15), and the mounting plate (15) is screwed to the conveying pipe (10) with bolts (16).
6. The anti-blocking device for an ash conveying system in a thermal power plant according to claim 1, characterized in that: A sealing plate (17) is installed at the bottom of the connecting block (12), and a threaded rod (18) is screwed onto the bottom of the sealing plate (17).