Soot blower for preventing boiler from being blocked
By designing a combined structure of brush plates and trapezoidal scrapers driven by sliding columns and motors, the existing steam soot blowing device has been solved, and the efficient ash cleaning effect of the inner wall of the flue is achieved.
Patent Information
- Application Number
- CN202422450680.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-10-11
AI Technical Summary
The existing steam soot blowing device has cumbersome operations to clean ash on the heated surface of the horizontal flue, with a large amount of manual labor, and the single gas blowing to clean stubborn soot is not effective, resulting in uneven cleaning of ash.
A soot blower for anti-blocking of boilers is designed, using a combined structure of sliding columns, motor-driven brush plates and trapezoidal scrapers. By rotating brush plates and trapezoidal scrapers combined with spring force, the stubborn soot ash on the inner wall of the flue elbow pipe is uniformly scraped, and the soot ash on the cross pipe bottom plate is assisted by jetting the soot blower nozzle.
The uniform cleaning of the stubborn soot ash on the inner wall of the flue elbow pipe is achieved, the cleaning efficiency is improved, the difficulty of collecting soot ash in the horizontal pipe is avoided, and the amount of manual labor is reduced.
Smart Images
Figure CN223271288U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of boiler soot blowers, in particular to a soot blower for preventing boiler blockage. Background Art
[0002] After the pulverized coal is burned in the furnace, a large amount of flue gas is generated. The fly ash particles carried by the flue gas accumulate in the flue and on the heating surface tube screen to form ash deposits, especially in the horizontal flue behind the flame deflection angle in the furnace. Due to the change of the flow field in the flue, fly ash particles are easily accumulated in the horizontal flue to form an ash layer. The ash deposits in the horizontal flue are thicker, which not only affects the heat exchange efficiency of the superheater and reheater, but also leads to an increase in ventilation resistance, which increases the power consumption of the blower and induced draft fan. In severe cases, it will also limit the boiler output.
[0003] Therefore, the existing horizontal flue is generally equipped with a steam soot blowing device to clean the accumulated dust on the heating surface thereof. However, the existing steam soot blowing device is cumbersome to operate when cleaning the accumulated dust on the heating surface of the horizontal flue, and the manual labor is large. Moreover, when this soot blower relies on a single gas to blow and clean the soot, it is not effective for cleaning the stubbornly attached soot, resulting in uneven cleaning. Utility Model Content
[0004] (1) Technical problems solved
[0005] In response to the deficiencies in the prior art, the utility model provides a soot blower for preventing boiler blockage, which solves the problem that the existing steam soot blowing device is cumbersome to operate and requires a large amount of manual labor when cleaning the accumulated soot on the heating surface of the horizontal flue. In addition, this soot blower relies on a single gas to blow and clean the soot, but is not effective in cleaning stubbornly adhered soot, resulting in uneven cleaning.
[0006] (2) Technical solution
[0007] To achieve the above-mentioned object, the utility model provides the following technical solution: a sootblower for preventing boiler blockage, comprising a flue elbow pipe, a transverse slide cylinder provided on the flue elbow pipe, a flue cleaning assembly provided on the flue elbow pipe, the flue cleaning assembly being used to clean the flue gas dust in the horizontal flue of the flue elbow pipe;
[0008] The flue cleaning assembly includes a flue elbow pipe, a wheel disc, a sliding column, a first motor, a belt, a fixed column, a trapezoidal scraper, a spring and a rack;
[0009] The sliding column in the flue cleaning assembly is slidably connected to the transverse sliding cylinder, the first motor is fixedly mounted on the outer surface of the flue elbow pipe, the output shaft of the first motor is fixedly sleeved with a first gear, the sliding column is provided with a tooth groove, the first gear is meshed with the tooth groove, and the first gear is used to drive the sliding column to move forward and backward;
[0010] Both ends of the sliding column are rotatably connected to pulley shafts, and a belt is connected between the two pulley shafts. Both ends of the pulley shaft located in the flue elbow pipe are fixedly connected to brush plates, and multiple brushes are provided on the lower surface of the brush plates.
[0011] Preferably, the two fixed columns are fixedly connected to the two sides of the brush plate, the two trapezoidal scrapers are respectively sleeved on the outer surfaces of the corresponding fixed columns, the two springs are respectively sleeved on the outer surfaces of the corresponding fixed columns, and the two springs are respectively fixedly connected to the brush plate and the trapezoidal scraper.
[0012] Preferably, the rotating shaft of the pulley shaft located outside the flue elbow pipe rotates through the outer surface of the sliding column and is fixedly sleeved with a second gear, and the outer surface of the second gear is fixedly connected to a slider plate.
[0013] Preferably, the rack is slidably connected to the outer surface of the slider plate slider, and the rack is meshed with the second gear.
[0014] Preferably, the end of the sliding column extending out of the flue elbow pipe is fixedly installed with a support frame, and the end of the sliding column away from the support frame is fixedly installed with a soot blower nozzle, and a pipe is fixedly connected between the soot blower nozzle and the support frame, and the soot blower nozzle is used to spray soot onto the inner wall of the flue elbow pipe.
[0015] Preferably, a second motor is fixedly mounted on the outer surface of the support frame, a wheel is rotatably connected to the outer surface of the output shaft of the second motor, one end of the rack is rotatably connected to the edge of the wheel, and the wheel is used to drive the second gear to rotate back and forth.
[0016] (3) Beneficial effects
[0017] Compared with the prior art, the utility model provides a soot blower for preventing boiler blockage, which has the following beneficial effects:
[0018] 1. The soot blower for preventing boiler blockage can drive the belt to rotate through the pulley shaft through the continuously reciprocating second gear, thereby driving another pulley shaft to rotate. When the other pulley shaft rotates, it can drive the brush plate thereon to rotate synchronously. When the brush plate rotates, the trapezoidal scraper is always moved in accordance with the side wall of the flue elbow pipe under the force of the spring, thereby evenly scraping off the stubborn soot attached to the two side walls of the flue elbow pipe. This avoids the problem of poor cleaning effect of stubbornly attached soot when the traditional soot blower relies on a single gas to blow and clean the soot.
[0019] 2. When the brush plate of the boiler anti-blocking soot blower is rotated to fit with the bottom plate of the horizontal tube of the flue elbow pipe, the first motor will drive the sliding column to move outward, so that the soot fallen on the bottom plate of the horizontal tube of the flue elbow pipe can be cleaned into the vertical pipe and fall out. This avoids the problem that the soot in the horizontal tube is difficult to be effectively collected after blowing, and improves the cleaning efficiency of the soot in the flue horizontal tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the utility model;
[0022] Figure 3 This is a schematic diagram of the brush plate structure of the utility model.
[0023] In the figure: 1. Flue elbow pipe; 2. Wheel; 3. Sliding column; 4. First motor; 5. First gear; 6. Pulley shaft; 7. Belt; 8. Brush plate; 9. Fixed column; 10. Trapezoidal scraper; 11. Spring; 12. Sootblower nozzle; 13. Support frame; 14. Rack; 15. Second gear; 16. Sliding plate; 17. Second motor. DETAILED DESCRIPTION
[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0025] See also Figure 1-3 The utility model provides a new technical solution: a soot blower for preventing boiler blockage, comprising a flue elbow pipe 1, a horizontal slide cylinder provided on the flue elbow pipe 1, a flue cleaning assembly provided on the flue elbow pipe 1, and the flue cleaning assembly being used to clean the flue gas dust in the horizontal flue of the flue elbow pipe 1;
[0026] The flue cleaning assembly includes a flue elbow pipe 1, a wheel disc 2, a sliding column 3, a first motor 4, a belt 7, a fixed column 9, a trapezoidal scraper 10, a spring 11 and a rack 14;
[0027] The sliding column 3 in the flue cleaning assembly is slidably connected in the transverse sliding cylinder, the first motor 4 is fixedly mounted on the outer surface of the flue elbow pipe 1, the first gear 5 is fixedly sleeved on the output shaft of the first motor 4, the sliding column 3 is provided with a tooth groove, the first gear 5 is meshed with the tooth groove, and the first gear 5 is used to drive the sliding column 3 to move forward and backward;
[0028] Both ends of the sliding column 3 are rotatably connected to the pulley shaft 6, and a belt 7 is connected between the two pulley shafts 6. The two ends of the pulley shaft 6 located in the flue elbow pipe 1 are fixedly connected to the brush plate 8, and a plurality of brushes are provided on the lower surface of the brush plate 8.
[0029] Furthermore, two fixed columns 9 are fixedly connected to the two sides of the brush plate 8, two trapezoidal scrapers 10 are respectively sleeved on the outer surfaces of the corresponding fixed columns 9, and two springs 11 are respectively sleeved on the outer surfaces of the corresponding fixed columns 9. The two springs 11 are fixedly connected to the brush plate 8 and the trapezoidal scraper 10.
[0030] Furthermore, the rotating shaft of the pulley shaft 6 located outside the flue elbow pipe 1 rotates through the outer surface of the sliding column 3 and is fixedly sleeved with the second gear 15, and the outer surface of the second gear 15 is fixedly connected to the slider plate 16.
[0031] Furthermore, the rack 14 is slidably connected to the outer surface of the slider of the slider plate 16 , and the rack 14 is meshedly connected to the second gear 15 .
[0032] Furthermore, a support frame 13 is fixedly installed on one end of the sliding column 3 extending out of the flue elbow pipe 1, and a soot blower nozzle 12 is fixedly installed on the end of the sliding column 3 away from the support frame 13. A pipe is fixedly connected between the soot blower nozzle 12 and the support frame 13, and the soot blower nozzle 12 is used to spray soot onto the inner wall of the flue elbow pipe 1.
[0033] Furthermore, a second motor 17 is fixedly mounted on the outer surface of the support frame 13, the wheel 2 is rotatably connected to the outer surface of the output shaft of the second motor 17, one end of the rack 14 is rotatably connected to the edge of the wheel 2, and the wheel 2 is used to drive the second gear 15 to rotate back and forth.
[0034] Furthermore, when in use, by starting the first motor 4, the first motor 4 can drive the sliding column 3 to move back and forth on the horizontal slide of the flue elbow pipe 1 through the first gear 5, and at the same time, by starting the support frame 13, the support frame 13 bursts out compressed gas through the soot blower mouth 12, thereby cleaning the smoke and dust on the inner wall of the horizontal pipe of the flue elbow pipe 1, and then by starting the second motor 17, when the second motor 17 drives the wheel disc 2 to rotate, the wheel disc 2 can drive one end of the rack 14 to rotate at the same time, so that the moving rack 14 can drive the second gear 15 to rotate back and forth continuously. The second gear 15 which rotates back and forth continuously can drive the belt 7 to rotate through the pulley shaft 6, thereby driving the other pulley shaft 6 to rotate. When the other pulley shaft 6 rotates, it can drive the brush plate 8 thereon to rotate synchronously. When the brush plate 8 rotates, the trapezoidal scraper 10 is always moved in accordance with the side wall of the flue elbow pipe 1 by the force of the spring 11, thereby evenly scraping off the stubborn soot attached to the two side walls of the flue elbow pipe 1. This avoids the problem of poor cleaning effect of the stubbornly attached soot when the soot blower relies on a single gas to blow to clean the soot in the traditional way.
[0035] Furthermore, when the brush plate 8 is rotated to fit with the bottom plate of the horizontal tube of the flue elbow pipe 1, the first motor 4 will drive the sliding column 3 to move outward, so that the ash that falls on the bottom plate of the horizontal tube of the flue elbow pipe 1 can be cleaned into the vertical pipe and fall out. This avoids the problem that the ash in the horizontal tube is difficult to be effectively collected after blowing, thereby improving the cleaning efficiency of the ash in the flue horizontal tube.
[0036] Working principle: When in use, by starting the first motor 4, the first motor 4 can drive the sliding column 3 to move back and forth on the horizontal slide of the flue elbow pipe 1 through the first gear 5, and at the same time, by starting the support frame 13, the support frame 13 bursts out compressed gas through the soot blower mouth 12, thereby cleaning the smoke and dust on the inner wall of the flue elbow pipe 1, and then by starting the second motor 17, when the second motor 17 drives the wheel 2 to rotate, the wheel 2 can drive one end of the rack 14 to rotate at the same time, so that the moving rack 14 can drive the second gear 15 to rotate back and forth continuously. The second gear 15 which rotates back and forth continuously can drive the belt 7 to rotate through the pulley shaft 6, thereby driving the other pulley shaft 6 to rotate. When the other pulley shaft 6 rotates, it can drive the brush plate 8 thereon to rotate synchronously. When the brush plate 8 rotates, the trapezoidal scraper 10 is always moved in accordance with the side wall of the flue elbow pipe 1 by the force of the spring 11, thereby evenly scraping off the stubborn soot attached to the two side walls of the flue elbow pipe 1. This avoids the problem of poor cleaning effect of the stubbornly attached soot when the soot blower relies on a single gas to blow to clean the soot in the traditional way.
[0037] Furthermore, when the brush plate 8 is rotated to fit with the bottom plate of the horizontal tube of the flue elbow pipe 1, the first motor 4 will drive the sliding column 3 to move outward, so that the ash that falls on the bottom plate of the horizontal tube of the flue elbow pipe 1 can be cleaned into the vertical pipe and fall out.
[0038] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A sootblower for preventing boiler blockage, characterized in that: The invention comprises a flue elbow pipe (1), a horizontal slide cylinder is provided on the flue elbow pipe (1), and a flue cleaning component is provided on the flue elbow pipe (1), and the flue cleaning component is used to clean the flue gas dust in the horizontal flue of the flue elbow pipe (1); The flue cleaning assembly comprises a flue elbow pipe (1), a wheel disc (2), a sliding column (3), a first motor (4), a belt (7), a fixed column (9), a trapezoidal scraper (10), a spring (11) and a rack (14); The sliding column (3) in the flue cleaning assembly is slidably connected in the transverse sliding cylinder, the first motor (4) is fixedly installed on the outer surface of the flue elbow pipe (1), the first gear (5) is fixedly sleeved on the output shaft of the first motor (4), the sliding column (3) is provided with a tooth groove, the first gear (5) is meshed with the tooth groove, and the first gear (5) is used to drive the sliding column (3) to move forward and backward; Both ends of the sliding column (3) are rotatably connected to pulley shafts (6), a belt (7) is transmission-connected between the two pulley shafts (6), and both ends of the pulley shaft (6) located in the flue elbow pipe (1) are fixedly connected to brush plates (8), and a plurality of brushes are provided on the lower surface of the brush plates (8).
2. A boiler anti-blocking sootblower according to claim 1, characterized in that: The two fixing columns (9) are respectively fixedly connected to the two sides of the brush plate (8); the two trapezoidal scrapers (10) are respectively sleeved on the outer surfaces of the corresponding fixing columns (9); the two springs (11) are respectively sleeved on the outer surfaces of the corresponding fixing columns (9); and the two springs (11) are respectively fixedly connected to the brush plate (8) and the trapezoidal scrapers (10).
3. The boiler anti-blocking sootblower according to claim 1, characterized in that: The rotating shaft of the pulley shaft (6) located outside the flue elbow pipe (1) rotates through the outer surface of the sliding column (3) and is fixedly sleeved with a second gear (15), and the outer surface of the second gear (15) is fixedly connected with a slider plate (16).
4. A boiler anti-blocking sootblower according to claim 3, characterized in that: The rack (14) is slidably connected to the outer surface of the slider of the slider plate (16), and the rack (14) is meshedly connected with the second gear (15).
5. The boiler anti-blocking sootblower according to claim 1, characterized in that: A support frame (13) is fixedly mounted on one end of the sliding column (3) extending out of the flue elbow pipe (1), and a soot blower nozzle (12) is fixedly mounted on one end of the sliding column (3) away from the support frame (13). A pipe is fixedly connected between the soot blower nozzle (12) and the support frame (13), and the soot blower nozzle (12) is used to spray soot toward the inner wall of the flue elbow pipe (1).
6. A boiler anti-blocking sootblower according to claim 5, characterized in that: A second motor (17) is fixedly mounted on the outer surface of the support frame (13); the wheel disc (2) is rotatably connected to the outer surface of the output shaft of the second motor (17); one end of the rack (14) is rotatably connected to the edge of the wheel disc (2); and the wheel disc (2) is used to drive the second gear (15) to rotate back and forth.