High-cleanliness shock wave soot blower
By employing a load-bearing ring and flap structure in the shockwave sootblower, and utilizing an automatic airflow shut-off and buffer design, the problem of impurities drifting into the sootblower is solved, achieving high cleanliness and durability, and extending the equipment's lifespan.
Patent Information
- Application Number
- CN202520404715.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
When existing shockwave sootblowers stop working, impurities from the boiler can easily drift into the sootblower, causing contamination and requiring frequent cleaning.
A high-cleanliness shockwave sootblower was designed, which adopts a bearing ring and flap structure. The flap opens under the action of airflow and closes automatically when stopped by a torsion spring hinge. Combined with a sliding plug and a compression spring for buffering, it reduces the entry of impurities. The flap and bearing ring are made of ceramic materials to improve high temperature resistance and wear resistance.
It effectively prevents impurities from entering the soot blower from the boiler, improves cleanliness, reduces damage to parts, and extends service life.
Smart Images
Figure CN223795288U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of soot blowing technology, and in particular to a high-cleanliness shockwave soot blower. Background Technology
[0002] During long-term use, the heating surfaces inside a boiler accumulate a large amount of dust particles, loose materials, adhesives, and deposits, which increases the exhaust gas temperature at the boiler tail end and reduces the boiler's thermal efficiency. Therefore, shock wave soot blowers are usually used to clean the boiler's inner walls.
[0003] When the shock wave soot blower is working, the exhaust port is usually connected to the boiler body, and then the air pump delivers air into the shock wave soot blower. When the solenoid valve is opened, the air inside the shock wave soot blower into the boiler body, thereby cleaning the ash inside the boiler body.
[0004] However, when the shock wave sootblower stops working, residual impurities still floating in the boiler may drift into the shock wave sootblower, causing it to become contaminated and requiring regular cleaning, which is a significant drawback. Utility Model Content
[0005] To improve the cleanliness of sootblowers, this application provides a high-cleanliness shockwave sootblower.
[0006] The high-cleanliness shockwave sootblower provided in this application adopts the following technical solution:
[0007] A high-cleanliness shockwave sootblower includes a sootblower body, on the inner wall of the sootblower body at the exhaust port, a bearing ring is arranged, and a flap is hinged to the bearing ring by a torsion spring hinge.
[0008] By adopting the above technical solution, when the shock wave sootblower is working, the airflow drives the flap to rotate, thereby causing the airflow to be ejected from its exhaust port into the furnace body. When the shock wave sootblower stops working, the deformation force of the torsion spring hinge pushes the flap to rotate automatically, thereby re-sealing the exhaust port of the shock wave sootblower, reducing the possibility of impurities in the boiler drifting into the sootblower body, and improving the cleanliness inside the shock wave sootblower.
[0009] Optionally, the bearing ring is provided with a plurality of buffer holes in the circumferential direction. The buffer holes are opened along the blowing direction of the airflow, and the depth of each buffer hole gradually decreases in the circumferential direction away from the hinge point between the flap and the bearing ring. The bearing ring is provided with a sealing ring for closing the buffer holes. A sliding plug slides in each buffer hole. A compression spring supports the sliding plug between the sliding plug and the sealing ring. The sliding plug slides out of the buffer hole and is used to abut against the flap.
[0010] By adopting the above technical solution, when the flap rotates to re-close the sootblower body, the flap will sequentially abut against each of the sliding plugs on the bearing ring, and the sliding plugs will squeeze each of the compression springs. The compression springs will exert a reverse resistance force on the flap, thereby buffering the rotation of the flap and reducing the possibility of the flap being damaged by repeated heavy impacts on the bearing ring.
[0011] Optionally, the end of the slider that abuts against the flap is provided with a resilient abutment.
[0012] By adopting the above technical solution, the elastic abutment changes the contact between the slide block and the flapper from rigid release to flexible contact, which helps to reduce the possibility of the slide block being damaged at the end by the flapper impact.
[0013] Optionally, the flap is semi-circular and has two hinges on the bearing ring, with the hinge centers of the two flaps being parallel to each other and symmetrical about the center of the bearing ring.
[0014] By adopting the above technical solution, the two flaps work together to provide a larger flow opening for the airflow to the boiler.
[0015] Optionally, the outer circumferential wall of the slider located within the buffer hole has an arc groove in the circumferential direction.
[0016] By adopting the above technical solution, the setting of the annular groove reduces the contact area between the sliding plug and the buffer hole, thereby improving the smoothness of the sliding plug sliding in the buffer hole.
[0017] Optionally, the sealing ring is bolted to the bearing ring.
[0018] By adopting the above technical solution, when the compression spring and the slide plug are damaged, workers can easily disassemble the sealing ring, which facilitates the replacement of parts.
[0019] Optionally, both the bearing ring and the flap are made of ceramic material.
[0020] By adopting the above technical solution, the bearing ring and flap have strong high temperature resistance and wear resistance. In addition, since ceramics have relatively poor thermal conductivity, the possibility of heat transfer from the boiler to the sootblower body and causing damage to the components can be reduced.
[0021] In summary, this application includes at least one of the following beneficial technical effects:
[0022] 1. When the shockwave sootblower is working, the airflow pushes the flap to rotate, thereby causing the airflow to be ejected from its exhaust port into the furnace body. When the shockwave sootblower stops working, the deformation force of the torsion spring hinge pushes the flap to rotate automatically, thereby re-sealing the exhaust port of the shockwave sootblower, reducing the possibility of impurities in the boiler drifting into the sootblower body, and improving the cleanliness inside the shockwave sootblower;
[0023] 2. During the process of the flap rotating to re-close the sootblower body, the flap will sequentially abut against each of the sliding plugs on the bearing ring, and the sliding plugs will squeeze each compression spring. The compression spring will exert a reverse resistance force on the flap, thus buffering the rotation of the flap and reducing the possibility of damage caused by repeated heavy impacts on the bearing ring. Attached Figure Description
[0024] Figure 1 This is a cross-sectional view of an embodiment of this application.
[0025] Figure 2 This is a cross-sectional view showing the positional relationship between the bearing ring, compression spring, and sealing ring in an embodiment of this application.
[0026] Explanation of reference numerals in the attached drawings: 1. Soot blower body; 2. Bearing ring; 21. Buffer hole; 3. Torsion spring hinge; 4. Flip plate; 5. Sealing ring; 6. Sliding plug; 61. Arc groove; 7. Compression spring; 8. Elastic abutment. Detailed Implementation
[0027] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0028] This application discloses a high-cleanliness shockwave soot blower.
[0029] Reference Figure 1 The high-cleanliness shockwave sootblower includes a sootblower body 1. A bearing ring 2 is bolted to the inner wall of the exhaust port on the sootblower body 1. Two flaps 4 are hinged to the bearing ring 2 by a torsion spring hinge 3. Both flaps 4 are semi-circular, and the hinge centers of the two flaps 4 are parallel to each other and symmetrical about the center of the bearing ring 2.
[0030] Reference Figure 1 When the shockwave sootblower is activated, the airflow ejected from the sootblower body 1 blows towards the flap 4, causing the flap 4 to rotate under force. This airflow is then blown from the exhaust port of the sootblower body 1 towards the boiler. After the shockwave sootblower body 1 is closed, the deformation force of the torsion spring hinge 3 pushes the flap 4 to rotate automatically, and the two flaps 4 re-close the exhaust port of the sootblower body 1.
[0031] Reference Figure 1 and Figure 2 The bearing ring 2 has multiple buffer holes 21 circumferentially. The buffer holes 21 are opened along the blowing direction of the airflow. The depth of each buffer hole 21 gradually decreases along the circumferential direction away from the hinge point between the flap 4 and the bearing ring 2. A sealing ring 5 for sealing the buffer holes 21 is bolted on the bearing ring 2.
[0032] Each buffer hole 21 has a sliding plug 6 that slides in. The outer circumferential wall of the sliding plug 6 inside the buffer hole 21 has an arc groove 61. The opening of the arc groove 61 reduces the contact area between the sliding plug 6 and the buffer hole 21, thereby improving the smoothness of the sliding plug 6 in the buffer hole 21.
[0033] A compression spring 7 supports the sliding plug 6 and the sealing ring 5. The sliding plug 6 slides through the buffer hole 21 and is used to abut the flap 4. An elastic abutment 8 is glued to the end of the sliding plug 6 that abuts the flap 4.
[0034] Reference Figure 1 and Figure 2 When the flap 4 rotates to re-close the exhaust port of the sootblower body 1, the flap 4 will sequentially abut against each of the sliding plugs 6 on the bearing ring 2, and squeeze each of the compression springs 7 through the sliding plugs 6. The compression springs 7 exert a reverse resistance force on the flap 4 under pressure, thereby buffering the rotation of the flap 4 and reducing the possibility of the flap 4 being damaged by repeated heavy impacts on the bearing ring 2.
[0035] Reference Figure 1 and Figure 2 Both the bearing ring 2 and the flap 4 are made of ceramic material, which has strong high temperature resistance and wear resistance, resulting in a long service life. In addition, because ceramic has relatively poor thermal conductivity, it can reduce the possibility of heat transfer from the boiler to the sootblower body 1, thus reducing the possibility of damage to components.
[0036] The implementation principle of a high-cleanliness shockwave sootblower according to an embodiment of this application is as follows: When the shockwave sootblower is activated, the airflow ejected from the sootblower body 1 blows towards the flapper 4, causing the flapper 4 to rotate under force. This airflow is then blown from the exhaust port of the sootblower body 1 towards the boiler. After the shockwave sootblower body 1 is closed, the deformation force of the torsion spring hinge 3 pushes the flapper 4 to rotate automatically, and the two flapper 4 re-close the exhaust port of the sootblower body 1. During the process of the flapper 4 rotating to re-close the exhaust port of the sootblower body 1, the flapper 4 sequentially abuts against each of the sliding plugs 6 on the bearing ring 2, and the sliding plugs 6 compress each of the compression springs 7. The compression springs 7 exert a reverse resistance force on the flapper 4, thus buffering the rotation of the flapper 4 and reducing the possibility of damage caused by repeated heavy impacts of the flapper 4 against the bearing ring 2.
[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A high-cleanliness shockwave sootblower, characterized in that: Includes a soot blower body (1), on which a bearing ring (2) is arranged on the inner wall at the exhaust port, and a flap (4) is hinged to the bearing ring (2) by a torsion spring hinge (3).
2. The high-cleanliness shockwave sootblower according to claim 1, characterized in that: The bearing ring (2) has multiple buffer holes (21) circumferentially. The buffer holes (21) are opened along the blowing direction of the airflow, and the depth of each buffer hole (21) gradually decreases along the circumferential direction away from the hinge point between the flap (4) and the bearing ring (2). The bearing ring (2) is provided with a sealing ring (5) for closing the buffer holes (21). A sliding plug (6) slides in each buffer hole (21). A compression spring (7) supports the sliding plug (6) and the sealing ring (5). The sliding plug (6) slides out of the buffer hole (21) and is used to abut against the flap (4).
3. The high-cleanliness shockwave sootblower according to claim 2, characterized in that: The end of the slider (6) that abuts against the flap (4) is provided with an elastic abutment (8).
4. The high-cleanliness shockwave sootblower according to claim 1, characterized in that: The flap (4) is semi-circular and has two hinges on the bearing ring (2). The hinge centers of the two flaps (4) are parallel to each other and symmetrical about the center of the bearing ring (2).
5. The high-cleanliness shockwave sootblower according to claim 2, characterized in that: The circumferential outer wall of the slider (6) located inside the buffer hole (21) has an arc groove (61) in the circumferential direction.
6. The high-cleanliness shockwave sootblower according to claim 2, characterized in that: The sealing ring (5) is bolted to the bearing ring (2).
7. The high-cleanliness shockwave sootblower according to claim 2, characterized in that: Both the bearing ring (2) and the flap (4) are made of ceramic material.