Impulse type boiler ash deposition cleaning device

Abstract

The utility model relates to the technical field of boiler accumulated ash cleaning, and discloses a pulse type boiler accumulated ash cleaning device which is characterized in that a driving motor is arranged to drive a driving gear to rotate, the driving gear is meshed with a linkage gear to enable an I-shaped rotating wheel to rotate, and then a gas distribution seat, a vertical pipe and a cleaning pipe are driven to rotate synchronously; meanwhile, compressed gas equipment supplies gas to a hollow groove in an I-shaped rotating wheel through a gas inlet pipe and a rotating joint, the gas is distributed to a vertical pipe and a cleaning pipe through a gas cavity, finally, high-pressure pulse airflow is sprayed to the inner wall of the boiler body through a pulse nozzle, and the rotating cleaning pipe drives the pulse nozzle to form an annular scanning track; the cleaning pipes distributed in a staggered mode enable the pulse nozzles to generate multiple layers of spraying areas at different radial positions to cover the complex curved surface of the inner wall of the boiler, impact force of pulse airflow enables accumulated dust to be separated from the pipe walls, non-contact all-directional cleaning is achieved, the problem of contact abrasion of a traditional scraper blade is avoided, the cleaning range is enlarged through rotating motion, and the cleaning efficiency is improved. The problem of a coverage blind area of a fixed nozzle is solved.

Description

Technical Field

[0001] This utility model relates to the field of boiler ash cleaning technology, and in particular to a pulse-type boiler ash cleaning device. Background Technology

[0002] In industrial production, boilers, as crucial heat energy conversion equipment, are widely used in various fields such as power generation, chemical industry, and heating. However, during long-term operation, ash inevitably accumulates on the internal heating surfaces and other parts of the boiler. Ash accumulation not only reduces the boiler's heat exchange efficiency and increases energy consumption, but can also lead to localized overheating, affecting the safe and stable operation of the boiler, and even causing serious problems such as shutdown. Therefore, timely and effective cleaning of boiler ash is of great significance for ensuring the normal operation of the boiler and improving energy utilization efficiency.

[0003] Currently, boiler ash removal mainly uses traditional scraper cleaning, which removes ash by mechanical scraper contacting and rubbing against the boiler's inner wall. This method can easily damage the boiler's inner wall, and it is difficult to clean ash in complex structural areas, leaving cleaning dead corners and making it impractical. Utility Model Content

[0004] Traditional scraper cleaning, which removes ash by mechanical scraper contacting and rubbing against the boiler's inner wall, is prone to damaging the boiler's inner wall and is difficult to clean ash in complex structural areas, leaving cleaning dead corners and lacking practicality. This utility model provides a pulse-type boiler ash cleaning device, which has the advantage of high-efficiency cleaning and solves the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a pulse-type boiler ash cleaning device, including a boiler body, a cleaning seat at the upper end of the boiler body, a drive chamber inside the cleaning seat, an I-shaped rotating wheel rotatably mounted at the bottom of the cleaning seat, an air inlet pipe mounted at the upper end of the I-shaped rotating wheel, the air inlet pipe extending to the outside of the cleaning seat and connected to a compressed gas device, a gas distribution seat fixedly mounted at the bottom of the I-shaped rotating wheel, multiple vertical pipes fixedly mounted at the bottom of the gas distribution seat, multiple cleaning pipes fixedly mounted on the surface of the vertical pipes, pulse nozzles fixedly mounted on the other side of each cleaning pipe, a linkage gear fixedly mounted on the outer side of the upper end of the I-shaped rotating wheel, a drive motor mounted at the upper end of the cleaning seat, a drive gear located inside the drive chamber, the output end of the drive motor connected to the upper end of the drive gear via a coupling, and the side of the drive gear meshing with the side of the linkage gear.

[0006] Preferably, a rotary joint is installed on the side of the air intake pipe near the I-shaped rotor, the air intake pipe is installed on the upper end of the I-shaped rotor through the rotary joint, and a solenoid valve is installed on the end of the air intake pipe near the rotary joint.

[0007] By using a rotary joint, the air inlet pipe and the I-shaped rotor can rotate relative to each other, ensuring gas transmission without affecting the rotation of the I-shaped rotor and improving the operational stability of the device.

[0008] Preferably, the I-shaped rotating wheel has a hollowed-out groove inside, the air distribution seat has an air cavity inside, and the hollowed-out groove inside the I-shaped rotating wheel is connected to the air cavity.

[0009] The perforated grooves allow the gas entering through the intake pipe to flow smoothly into the gas distribution chamber, enabling gas diversion and transmission and providing a stable gas source for the pulse nozzle.

[0010] Preferably, the cleaning pipes on the surfaces of the plurality of vertical pipes are staggered, and the outer side of the pulse nozzle corresponds to the inner wall of the boiler body.

[0011] By using a staggered arrangement of cleaning pipes, the pulse nozzles form a multi-layered spray area, covering the complex curved surface of the boiler's inner wall and eliminating cleaning dead spots.

[0012] Preferably, a drive rod is fixedly installed at the bottom of the gas distribution seat, and a cleaning brush is fixedly installed at the bottom of the drive rod, with the cleaning brush in contact with the bottom inner wall of the boiler body.

[0013] By using a cleaning brush, the brush adheres to the inner wall of the boiler bottom as it rotates with the gas distribution seat, effectively cleaning stubborn ash and compensating for insufficient cleaning by pure airflow.

[0014] Preferably, multiple fixing plates are evenly fixedly installed at corresponding locations on the cleaning seat and the boiler body, and fastening bolts are threaded inside the multiple fixing plates. A discharge pipe is fixedly installed at the bottom of the boiler body, and a valve is fixedly installed in the middle of the discharge pipe.

[0015] The installation of fixing plates and fastening bolts enables a detachable and fixed connection between the cleaning seat and the boiler body, facilitating the installation, commissioning, and maintenance of the device.

[0016] This utility model has the following advantages:

[0017] 1. By setting a drive motor to drive the active gear to rotate, the active gear meshes with the linkage gear to make the I-shaped rotor rotate, which in turn drives the gas distribution seat, vertical pipe and cleaning pipe to rotate synchronously. At the same time, the compressed gas equipment supplies gas to the hollow groove inside the I-shaped rotor through the air inlet pipe and rotary joint. The gas is divided into the vertical pipe and cleaning pipe through the gas chamber, and finally high-pressure pulse airflow is sprayed into the inner wall of the boiler body by the pulse nozzle. The rotating cleaning pipe drives the pulse nozzle to form a circular scanning trajectory. The staggered distribution of cleaning pipes makes the pulse nozzle generate multi-layer spray area at different radial positions, covering the complex curved surface of the boiler inner wall. The impact force of the pulse airflow makes the ash detach from the pipe wall, realizing non-contact all-round cleaning, avoiding the contact wear problem of traditional scraper, and the rotational motion expands the cleaning range and solves the coverage blind spot problem of fixed nozzle.

[0018] 2. By setting a drive rod and a cleaning brush at the bottom of the gas distribution seat, the rotating wheel drives the drive rod to rotate synchronously. The cleaning brush is in contact with the inner wall of the bottom of the boiler body, and the stubborn ash deposited at the bottom is removed by rotational friction. The synergistic effect of mechanical brushing and pulsed airflow can strengthen the cleaning of areas at the bottom where thick ash is easy to accumulate, making up for the lack of driving force for heavy ash by pure airflow cleaning. At the same time, the cleaning brush is made of flexible material, which will not damage the inner wall of the boiler when in contact with the cleaning, so as to achieve differentiated and efficient cleaning of ash in different locations and with different properties. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main view structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall internal cross-sectional structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the cleaning seat of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the bottom structure of the cleaning seat of this utility model.

[0024] In the diagram: 1. Boiler body; 2. Cleaning seat; 3. Drive chamber; 4. Discharge pipe; 5. Valve; 6. Fixing plate; 7. Fastening bolt; 8. I-shaped rotating wheel; 9. Linkage gear; 10. Hollowed-out groove; 11. Air inlet pipe; 12. Rotary joint; 13. Solenoid valve; 14. Drive motor; 15. Drive gear; 16. Gas distribution seat; 17. Air chamber; 18. Vertical pipe; 19. Cleaning pipe; 20. Pulse nozzle; 21. Drive rod; 22. Cleaning brush. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-5 A pulse-type boiler ash cleaning device includes a boiler body 1, a cleaning seat 2 at the upper end of the boiler body 1, a drive chamber 3 inside the cleaning seat 2, an I-shaped rotating wheel 8 rotatably mounted at the bottom of the cleaning seat 2, an air inlet pipe 11 mounted at the upper end of the I-shaped rotating wheel 8, and the air inlet pipe 11 extends to the outside of the cleaning seat 2 and is connected to a compressed gas device.

[0027] A gas distribution seat 16 is fixedly installed at the bottom of the I-shaped rotary wheel 8. Multiple vertical pipes 18 are fixedly installed at the bottom of the gas distribution seat 16. Multiple cleaning pipes 19 are fixedly installed on the surface of the vertical pipes 18. A pulse nozzle 20 is fixedly installed on the other side of each cleaning pipe 19. The compressed gas equipment supplies gas to the hollow groove 10 inside the I-shaped rotary wheel 8 through the air inlet pipe 11 and the rotary joint 12. The gas is divided into the vertical pipes 18 and the cleaning pipes 19 through the gas chamber 17. Finally, the pulse nozzle 20 sprays high-pressure pulse airflow onto the inner wall of the boiler body 1. The rotating cleaning pipes 19 drive the pulse nozzle 20 to form a circular scanning trajectory. The staggered cleaning pipes 19 make the pulse nozzle 20 generate multi-layer spray areas at different radial positions, covering the complex curved surface of the boiler inner wall. The impact force of the pulse airflow causes the ash to detach from the pipe wall, realizing non-contact all-round cleaning, avoiding the contact wear problem of traditional scrapers. Moreover, the rotational motion expands the cleaning range and solves the problem of blind spots in the coverage of fixed nozzles.

[0028] A linkage gear 9 is fixedly installed on the outer side of the upper end of the I-shaped rotating wheel 8. A drive motor 14 is installed on the upper end of the cleaning seat 2. An active gear 15 is provided on the inner side of the drive cavity 3. The output end of the drive motor 14 is connected to the upper end of the active gear 15 through a coupling. The side of the active gear 15 meshes with the side of the linkage gear 9. The drive motor 14 drives the active gear 15 to rotate. The active gear 15 meshes with the linkage gear 9 to make the I-shaped rotating wheel 8 rotate, thereby driving the air distribution seat 16, the vertical pipe 18 and the cleaning pipe 19 to rotate synchronously.

[0029] Please see Figures 2-5A rotary joint 12 is installed on the side of the air inlet pipe 11 near the I-shaped rotating wheel 8. The air inlet pipe 11 is installed on the upper end of the I-shaped rotating wheel 8 through the rotary joint 12. The rotary joint 12 allows the air inlet pipe 11 and the I-shaped rotating wheel 8 to rotate relative to each other. When the I-shaped rotating wheel 8 is rotating for cleaning, the gas can still be stably delivered to the pulse nozzle 20. A solenoid valve 13 is installed on the end of the air inlet pipe 11 near the rotary joint 12. The solenoid valve 13 controls the on / off state and frequency of the pulse airflow. The spray rhythm can be dynamically adjusted according to the dust accumulation, so as to achieve energy-saving and intelligent cleaning.

[0030] The I-shaped rotor 8 has a hollowed-out groove 10 inside, and the gas distribution seat 16 has a gas chamber 17 inside. The hollowed-out groove 10 inside the I-shaped rotor 8 is connected to the gas chamber 17. The cleaning pipes 19 on the surface of multiple vertical pipes 18 are distributed in an alternating manner. The outer side of the pulse nozzle 20 corresponds to the inner wall of the boiler body 1. Through the connection design between the hollowed-out groove 10 inside the I-shaped rotor 8 and the gas chamber 17 of the gas distribution seat 16, the compressed gas is diverted through this path to the alternating cleaning pipes 19 and the pulse nozzle 20, so that the pulse airflow is sprayed onto the inner wall of the boiler in a multi-layer annular trajectory, achieving coverage without dead angles. The air kinetic energy is used to efficiently peel off the accumulated ash, significantly improving the cleaning efficiency and coverage area.

[0031] A drive rod 21 is fixedly installed at the bottom of the gas distribution seat 16, and a cleaning brush 22 is fixedly installed at the bottom of the drive rod 21. The cleaning brush 22 is in contact with the bottom inner wall of the boiler body 1. With the drive rod 21 and cleaning brush 22 at the bottom of the gas distribution seat 16, the rotation of the I-shaped rotary wheel 8 drives the drive rod 21 to rotate synchronously. The cleaning brush 22 is in contact with the bottom inner wall of the boiler body 1, removing stubborn ash deposits through rotational friction. The synergistic effect of mechanical brushing and pulsed airflow provides enhanced cleaning for areas prone to heavy ash accumulation at the bottom, compensating for the insufficient driving force of pure airflow cleaning for heavy ash deposits. Furthermore, the cleaning brush 22 is made of flexible material, allowing for easy contact with... The cleaning process does not damage the inner wall of the boiler, enabling differentiated and efficient cleaning of ash from different locations and of different properties. Multiple fixing plates 6 are evenly fixedly installed at corresponding positions on the cleaning seat 2 and the boiler body 1. Each fixing plate 6 has a threaded fastening bolt 7 inside. A discharge pipe 4 is fixedly installed at the bottom of the boiler body, and a valve 5 is fixedly installed in the middle of the discharge pipe 4. The detachable connection design of the fixing plates 6 and the fastening bolts 7 enables the cleaning seat 2 and the boiler body 1 to be stably installed and easily disassembled, facilitating the assembly and maintenance of the equipment. With the setting of the discharge pipe 4 and the valve 5, the cleaned ash can be discharged in a timely manner, optimizing the operation process and improving the practicality of the equipment.

[0032] Working principle: In actual use, first open the original cover plate of the boiler body 1, and install the cleaning seat 2 on the upper end of the boiler body 1 by fastening bolts 7. Then start the drive motor 14 to drive the drive gear 15 to rotate. The drive gear 15 meshes with the linkage gear 9, driving the I-shaped rotating wheel 8 to rotate at the bottom of the cleaning seat 2. At the same time, the compressed gas equipment supplies gas to the system through the air inlet pipe 11. The gas enters the hollow groove 10 inside the I-shaped rotating wheel 8 through the rotary joint 12, and then flows into the air chamber 17 of the gas distribution seat 16. Then it is distributed to each vertical pipe 18 and cleaning pipe 19, and finally high-pressure pulse airflow is sprayed from the pulse nozzle 20 onto the inner wall of the boiler body 1.

[0033] As the I-shaped rotating wheel 8 rotates, the cleaning pipe 19 fixed to the surface of the vertical pipe 18 drives the pulse nozzle 20 to form a circular rotation trajectory. The staggered cleaning pipes 19 enable the pulse nozzles 20 at different heights and radial positions to perform multi-layer coverage spraying on different areas of the boiler inner wall during the rotation process. The pulse airflow impacts the ash layer at high speed, and the airflow energy is used to separate the ash from the pipe wall. The blown-off ash settles to the bottom of the boiler with the airflow or is discharged through the discharge pipe 4.

[0034] For stubborn ash accumulation at the bottom of the boiler, the drive rod 21 at the bottom of the gas distribution seat 16 rotates synchronously with the I-shaped rotating wheel 8, driving the cleaning brush 22 to rotate on the inner wall of the boiler bottom. Through the friction between the flexible brush body and the ash accumulation, the thick ash accumulation is cleaned and loosened. Combined with the blowing of pulse airflow, the ash accumulation at the bottom is thoroughly cleaned. During this process, the rotary joint 12 ensures that the air inlet pipe 11 maintains stable gas transmission when the I-shaped rotating wheel 8 rotates. The solenoid valve 13 can control the on / off state and frequency of the pulse airflow according to the cleaning requirements.

Claims

1. A pulse-type boiler ash cleaning device, comprising a boiler body (1), characterized in that: The upper end of the boiler body (1) is provided with a cleaning seat (2), and the interior of the cleaning seat (2) is provided with a drive chamber (3). An I-shaped rotating wheel (8) is rotatably installed at the bottom of the cleaning seat (2). An air inlet pipe (11) is installed at the upper end of the I-shaped rotating wheel (8). The air inlet pipe (11) extends to the outside of the cleaning seat (2) and is connected to a compressed gas device. A gas distribution seat (16) is fixedly installed at the bottom of the I-shaped rotating wheel (8). A plurality of vertical pipes (18) are fixedly installed at the bottom of the gas distribution seat (16). Multiple cleaning tubes (19) are fixedly installed on the surface of the cleaning tube (19), and pulse nozzles (20) are fixedly installed on the other side of each cleaning tube (19). A linkage gear (9) is fixedly installed on the outer side of the upper end of the I-shaped rotating wheel (8). A drive motor (14) is installed on the upper end of the cleaning seat (2). An active gear (15) is provided on the inner side of the drive cavity (3). The output end of the drive motor (14) is connected to the upper end of the active gear (15) through a coupling. The side of the active gear (15) meshes with the side of the linkage gear (9).

2. The pulse-type boiler ash cleaning device according to claim 1, characterized in that: A rotary joint (12) is installed on the side of the air intake pipe (11) near the I-shaped rotating wheel (8). The air intake pipe (11) is installed on the upper end of the I-shaped rotating wheel (8) through the rotary joint (12). A solenoid valve (13) is installed on the end of the air intake pipe (11) near the rotary joint (12).

3. The pulse-type boiler ash cleaning device according to claim 1, characterized in that: The I-shaped rotating wheel (8) has a hollowed-out groove (10) inside, and the air distribution seat (16) has an air cavity (17) inside. The hollowed-out groove (10) inside the I-shaped rotating wheel (8) is connected to the air cavity (17).

4. The pulse-type boiler ash cleaning device according to claim 1, characterized in that: The cleaning pipes (19) on the surface of the multiple vertical pipes (18) are staggered, and the outer side of the pulse nozzle (20) corresponds to the inner wall of the boiler body (1).

5. The pulse-type boiler ash cleaning device according to claim 1, characterized in that: A drive rod (21) is fixedly installed at the bottom of the gas distribution seat (16), and a cleaning brush (22) is fixedly installed at the bottom of the drive rod (21). The cleaning brush (22) is in contact with the bottom inner wall of the boiler body (1).

6. The pulse-type boiler ash cleaning device according to claim 1, characterized in that: Multiple fixing plates (6) are evenly fixedly installed at corresponding positions of the cleaning seat (2) and the boiler body (1). Each of the multiple fixing plates (6) is threaded with a fastening bolt (7). A discharge pipe (4) is fixedly installed at the bottom of the boiler body. A valve (5) is fixedly installed in the middle of the discharge pipe (4).

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