Induced draft fan for boiler
By adopting a rotating structure and roller bristle design in the boiler induced fan, the problems of dust accumulation and dust introduction of the boiler induced fan are solved, which extends the equipment life and reduces the risk of insufficient combustion, and achieves efficient dust removal effects.
Patent Information
- Application Number
- CN202421024171.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-11
AI Technical Summary
Existing boiler induced fans are prone to accumulation of dust during long-term use, resulting in damage to the equipment, and dust particles are brought into the boiler, causing an increase in impurities, affecting combustion efficiency and equipment blockage.
A boiler induced ventilation fan is designed, including the main body of the induced ventilation fan, auxiliary frame, filter plate, filter cotton, cleaning components and auxiliary components. Through the design of rotating structure and roller bristles, the filtering and cleaning functions are realized to ensure the filtration effect of the air outlet. Continuous and wind-driven dust removal effect.
It effectively reduces dust entering the induced air fan, extends the service life of the equipment, reduces the problem of insufficient dye combustion, maintains the filtration effect of the air inlet, and further dust removal of the air through the design of the cleaning components.
Smart Images
Figure CN222296535U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of induced draft fans, in particular to an induced draft fan for a boiler. Background Art
[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The original meaning of pot refers to a water container heated on fire, and furnace refers to a place where fuel is burned. The boiler consists of two major parts: the pot and the furnace. When the boiler is in use, an induced draft fan must be used to induce air to ensure stable combustion of the boiler.
[0003] For example, the utility model with application number CN201922182168.X discloses a boiler induced draft fan, which relates to the field of fan technology and solves the problem of abnormally large vibration of the existing induced draft fan inlet flue and fan bearing. The technical solution is a boiler induced draft fan, including a circular sealing cover. The utility model has a reasonable structure and can effectively reduce the vibration generated when the induced draft fan is working; however, there is a lot of dust in the boiler room, and the boiler induced draft fan blows wind with dust particles into the boiler, resulting in an increase in impurities in the boiler, incomplete combustion of the dye, and blockage inside the boiler. At the same time, the induced draft fan is used for a long time, and dust is easily accumulated inside, causing damage to the induced draft fan.
[0004] Therefore, in view of this, research and improvement are conducted on the existing structure and defects, and a boiler induced draft fan is provided. Utility Model Content
[0005] The utility model aims to provide a boiler induced draft fan to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a boiler induced draft fan, comprising an induced draft fan body and a second auxiliary frame, an air outlet pipe is arranged on one side of the induced draft fan body, a driving motor is installed in the middle of the induced draft fan body, and a blade assembly is arranged on the output end of the driving motor, a mounting column is installed on the outer surface of the induced draft fan body, and a connecting sleeve is rotatably arranged on the outer surface of the mounting column, a first auxiliary frame is installed on the outer surface of one side of the connecting sleeve, and a filter plate is arranged inside the first auxiliary frame, and filter cotton is installed under the filter plate, the second auxiliary frame is arranged on the other side of the connecting sleeve, a cleaning assembly for auxiliary cleaning is installed on the top of the mounting column, and the cleaning assembly comprises a collecting plate, a connecting plate and a cleaning brush, a connecting plate is installed on the bottom of the collecting plate, and a cleaning brush is equidistantly connected to the bottom of the connecting plate.
[0007] Furthermore, the assembly plate and the connecting plate are connected in a snap-fitting manner, and the assembly plate has an arc-shaped structure.
[0008] Furthermore, the bottom of the middle part of the connecting plate is snap-connected with the top of the mounting column, and the mounting column is threadedly connected to the induced draft fan body, and a base is provided at the bottom of the induced draft fan body.
[0009] Furthermore, the first auxiliary frame and the second auxiliary frame form a rotating structure through a connection sleeve and a mounting column, and the first auxiliary frame and the second auxiliary frame have the same structure.
[0010] Furthermore, a bottom plate is provided inside the air outlet duct, and a filter frame is installed outside the bottom plate.
[0011] Furthermore, auxiliary components for assisting cleaning are provided on both sides of the filter frame, and the auxiliary components include a first connecting block, a connecting spring and a second connecting block, a side plate is fixedly installed on the outer surface of the first connecting block, and a connecting spring is provided in the middle of the outer surface of one side of the first connecting block, a second connecting block is installed on the end of the connecting spring, and a filter frame is provided on the outer surface of the end of the second connecting block.
[0012] Furthermore, the auxiliary component also includes a roller and bristles, and the side plates are provided in two groups, the roller is rotatably installed between the two groups of side plates, and the outer surface of the roller is annularly distributed with bristles.
[0013] The utility model provides a boiler induced draft fan, which has the following beneficial effects:
[0014] 1. The utility model can interchange the positions of the second auxiliary frame and the first auxiliary frame by rotating the connecting sleeve outside the mounting column, which is convenient for quickly replacing the filter plate and filter cotton inside the first auxiliary frame, which is beneficial for the filter plate and filter cotton inside the second auxiliary frame to continue to be used in conjunction with the induced draft fan main body, and maintain the filtering effect on the air inlet of the induced draft fan main body. Through the design of the cleaning component, the connecting sleeve outside the mounting column can be rotated to interchange the positions of the second auxiliary frame and the first auxiliary frame, so that the filter plate inside the first auxiliary frame can contact with the cleaning brush at the bottom of the connecting plate, and the filter plate can be cleaned during the position replacement process, which is convenient for the first auxiliary frame to be used in conjunction with the induced draft fan main body by rotation after the second auxiliary frame has been used for a period of time.
[0015] 2. The utility model uses the design of auxiliary components to contact the bristles on the outer surface of the roller when the filter frame moves to a certain position. The roller can rotate due to changes in wind force, so that the bristles on the outer surface of the roller can rotate to clean the surface of the filter frame, and then remove dust from the induced draft fan, so that the wind blown to the boiler further reduces impurities, further reducing the problem of incomplete combustion of the dye. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the overall structure of a boiler induced draft fan according to the utility model;
[0017] Figure 2 This is a schematic diagram of the partial internal structure of the induced draft fan main body of a boiler induced draft fan according to the utility model, viewed from above;
[0018] Figure 3 The utility model is a schematic diagram of the expanded structure of a filter frame and a bottom plate of a boiler induced draft fan.
[0019] In the figure: 1. induced draft fan body; 2. first auxiliary frame; 3. mounting column; 4. connecting sleeve; 5. air outlet duct; 6. filter frame; 7. bottom plate; 8. driving motor; 9. second auxiliary frame; 10. base; 11. cleaning assembly; 1101. collecting plate; 1102. connecting plate; 1103. cleaning brush; 12. blade assembly; 13. filter plate; 14. filter cotton; 15. side plate; 16. auxiliary assembly; 1601. first connecting block; 1602. connecting spring; 1603. second connecting block; 1604. roller; 1605. bristles. DETAILED DESCRIPTION
[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.
[0021] like Figure 1 and Figure 2As shown, a boiler induced draft fan includes an induced draft fan body 1, a first auxiliary frame 2, a mounting column 3, a connecting sleeve plate 4, an air outlet pipe 5, a filter frame 6, a bottom plate 7, a driving motor 8, a second auxiliary frame 9, a base 10, a cleaning component 11, a collection plate 1101, a connecting plate 1102, a cleaning brush 1103, a blade component 12, a filter plate 13, filter cotton 14, a side plate 15, an auxiliary component 16, a first connecting block 1601, a connecting spring 1602, a second connecting block 1603, a roller shaft 1604 and a brush 1605. One side of the induced draft fan body 1 is provided There is an air outlet 5, a driving motor 8 is installed in the middle of the induced draft fan body 1, and a blade assembly 12 is arranged at the output end of the driving motor 8. The design of the driving motor 8 can drive the blade assembly 12 to rotate, so that the external air is introduced into the air outlet 5 through the induced draft fan body 1 for use by the boiler. The outer surface of the induced draft fan body 1 is installed with a mounting column 3, and the outer surface of the mounting column 3 is rotatably provided with a connecting sleeve 4, and the outer surface of one side of the connecting sleeve 4 is installed with a first auxiliary frame 2, and the interior of the first auxiliary frame 2 is provided with a filter plate 13, and the first auxiliary frame 2 and the second auxiliary frame 2 are provided with a filter plate 13. The auxiliary frame 9 forms a rotating structure with the mounting column 3 through the connection sleeve plate 4, and the first auxiliary frame 2 and the second auxiliary frame 9 have the same structure. A filter cotton 14 is installed below the filter plate 13. The second auxiliary frame 9 is arranged on the other side of the connection sleeve plate 4. The first auxiliary frame 2 is arranged in the air inlet area of the induced draft fan body 1. The design of the filter plate 13 inside the first auxiliary frame 2 can be used to perform preliminary filtering treatment on the gas at the air inlet. In addition, after the filter plate 13 is used to filter the air at the air inlet, the filter cotton 14 can be used to perform a second filtering treatment, so as to avoid the gas carrying some A lot of dust enters into the interior of the induced draft fan body 1, which increases the workload of the induced draft fan body 1 and reduces its service life due to long-term use. The induced draft fan body 1 can be protected to a certain extent. In addition, the second auxiliary frame 9 and the first auxiliary frame 2 can be interchanged by rotating the connecting sleeve 4 outside the mounting column 3, which is convenient for quickly replacing the filter plate 13 and the filter cotton 14 inside the first auxiliary frame 2, and is beneficial for the filter plate 13 and the filter cotton 14 inside the second auxiliary frame 9 to continue to be used in conjunction with the induced draft fan body 1, thereby maintaining the filtering effect on the air inlet of the induced draft fan body 1.
[0022] like Figure 1 , Figure 2 and Figure 3As shown, a cleaning assembly 11 for auxiliary cleaning is installed on the top of the mounting column 3, and the cleaning assembly 11 includes a collection plate 1101, a connecting plate 1102 and a cleaning brush 1103. A connecting plate 1102 is installed at the bottom of the mounting plate 1101, and a cleaning brush 1103 is equidistantly connected to the bottom of the connecting plate 1102. The mounting plate 1101 and the connecting plate 1102 are snap-fitted and connected, and the mounting plate 1101 is an arc-shaped structure. The middle bottom of the connecting plate 1102 is snap-fitted and connected to the top of the mounting column 3, and the mounting column 3 is threadedly connected to the induced draft fan body 1. A base 10 is provided at the bottom of the induced draft fan body 1, which can make the mounting column 3 and the induced draft fan body 1 connected according to the needs of use. The connecting plate 1102 can be separated from the connecting plate 1102 by the user according to the use requirements. The connecting plate 4 outside the mounting column 3 can be rotated to make the second auxiliary frame 9 and the first auxiliary frame 2 interchangeable. The filter plate 13 inside the first auxiliary frame 2 can contact with the cleaning brush 1103 at the bottom of the connecting plate 1102, so that the filter plate 13 can be cleaned during the position replacement process. In addition, the filter cotton 14 can be replaced with the first auxiliary frame 2 through the screw design, so that the first auxiliary frame 2 can be used in conjunction with the induced draft fan body 1 by rotating after the second auxiliary frame 9 has been used for a period of time. The air outlet duct 5 is provided with a bottom plate 7 inside, and the bottom plate 7 is externally A filter frame 6 is installed at the bottom, and auxiliary components 16 for auxiliary cleaning are arranged on both sides of the filter frame 6, and the auxiliary components 16 include a first connecting block 1601, a connecting spring 1602 and a second connecting block 1603. The outer surface of the first connecting block 1601 is fixedly installed with a side plate 15, and a connecting spring 1602 is arranged in the middle of the outer surface of one side of the first connecting block 1601, and the end of the connecting spring 1602 is installed with the second connecting block 1603, and the outer surface of the end of the second connecting block 1603 is provided with the filter frame 6, the auxiliary component 16 also includes a roller shaft 1604 and a brush 1605, and the side plate 15 is provided with two groups, and the roller shaft 160 is rotatably installed between the two groups of side plates 15. 4, and the outer surface of the roller 1604 is annularly distributed with bristles 1605. When the wind blows out from the inside of the air outlet pipe 5, the wind force will push the filter frame 6 to move on the outer surface of the side plate 15. The filter frame 6 is connected to the connecting spring 1602 through the second connecting block 1603, so that when the filter frame 6 moves to a certain position, it can contact with the bristles 1605 on the outer surface of the roller 1604. The roller 1604 can rotate due to the change in wind force, so that the bristles 1605 on the outer surface of the roller 1604 can rotate to clean the surface of the filter frame 6, and the wind of the induced draft fan is dusted again, so that the wind blown to the boiler further reduces impurities, and further reduces the problem of insufficient combustion of the dye.
[0023] In summary, the boiler induced draft fan is first based on Figure 1-Figure 3In the structure shown in the figure, the blade assembly 12 can be driven to rotate by the design of the driving motor 8, so that the external air is introduced into the air outlet pipe 5 through the induced draft fan body 1 for use by the boiler, and then the first auxiliary frame 2 is set in the air inlet area of the induced draft fan body 1, and the design of the filter plate 13 inside the first auxiliary frame 2 can be used to perform preliminary filtering treatment on the gas at the air inlet. In addition, after the air inlet gas is filtered by the filter plate 13, the filter cotton 14 can be used for re-filtering to prevent a lot of dust carried in the gas from entering the induced draft fan body 1, which increases the workload of the induced draft fan body 1 and reduces the service life after long-term use, and can protect the induced draft fan body 1 to a certain extent. In addition, the second auxiliary frame 9 and the first auxiliary frame 2 can be interchanged by rotating the connecting sleeve 4 outside the mounting column 3, so as to facilitate the rapid replacement of the filter plate 13 and the filter cotton 14 inside the first auxiliary frame 2, which is conducive to the continuous use of the filter plate 13 and the filter cotton 14 inside the second auxiliary frame 9 in conjunction with the induced draft fan body 1 to maintain the filtering effect on the air inlet of the induced draft fan body 1. Then, according to the use It is necessary to separate the mounting column 3 from the induced draft fan body 1, so that the user can disassemble and replace the connecting plate 1102 according to the needs of use. The connecting sleeve 4 outside the mounting column 3 can be rotated to make the second auxiliary frame 9 and the first auxiliary frame 2 interchangeable. The filter plate 13 inside the first auxiliary frame 2 can contact the cleaning brush 1103 at the bottom of the connecting plate 1102, so that the filter plate 13 can be cleaned during the position replacement process. In addition, the filter cotton 14 can be replaced with the first auxiliary frame 2 through the screw design, which is convenient for the second auxiliary frame 9 to be used for a period of time. Afterwards, the first auxiliary frame 2 is used in conjunction with the induced draft fan body 1 by rotating. Finally, when the wind is blown out from the inside of the air outlet pipe 5, the wind force will push the filter frame 6 to move on the outer surface of the side plate 15. The filter frame 6 is connected to the connecting spring 1602 through the second connecting block 1603, so that when the filter frame 6 moves to a certain position, it can contact the bristles 1605 on the outer surface of the roller 1604. The roller 1604 can rotate due to changes in wind force, so that the bristles 1605 on the outer surface of the roller 1604 can rotate to clean the surface of the filter frame 6, and the wind of the induced draft fan is dusted again.
[0024] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.
Claims
1. A boiler induced draft fan, comprising an induced draft fan body (1) and a second auxiliary frame (9), characterized in that: An air outlet pipe (5) is provided on one side of the induced draft fan body (1), a driving motor (8) is installed in the middle of the induced draft fan body (1), and a blade assembly (12) is provided at the output end of the driving motor (8), a mounting column (3) is installed on the outer surface of the induced draft fan body (1), and a connecting sleeve (4) is rotatably provided on the outer surface of the mounting column (3), a first auxiliary frame (2) is installed on the outer surface of one side of the connecting sleeve (4), and a filter plate (13) is provided inside the first auxiliary frame (2), and the filter plate (13) is provided inside the first auxiliary frame (2), and the filter plate (13) is provided inside the first auxiliary frame (2). A filter cotton (14) is installed below the filter plate (13), the second auxiliary frame (9) is arranged on the other side of the connecting sleeve (4), a cleaning component (11) for auxiliary cleaning is installed on the top of the mounting column (3), and the cleaning component (11) includes a collection plate (1101), a connecting plate (1102) and a cleaning brush (1103), a connecting plate (1102) is installed at the bottom of the collection plate (1101), and a cleaning brush (1103) is equidistantly connected to the bottom of the connecting plate (1102).
2. A boiler induced draft fan according to claim 1, characterized in that: The assembly plate (1101) and the connection plate (1102) are connected in a snap-fitting manner, and the assembly plate (1101) is in an arc-shaped structure.
3. A boiler induced draft fan according to claim 1, characterized in that: The bottom of the middle portion of the connecting plate (1102) is snap-connected to the top of the mounting column (3), and the mounting column (3) is threadedly connected to the induced draft fan body (1), and a base (10) is provided at the bottom of the induced draft fan body (1).
4. A boiler induced draft fan according to claim 1, characterized in that: The first auxiliary frame (2) and the second auxiliary frame (9) form a rotating structure through a connecting sleeve plate (4) and a mounting column (3), and the first auxiliary frame (2) and the second auxiliary frame (9) have the same structure.
5. The boiler induced draft fan according to claim 1, characterized in that: A bottom plate (7) is arranged inside the air outlet pipe (5), and a filter frame (6) is installed outside the bottom plate (7).
6. A boiler induced draft fan according to claim 5, characterized in that: Auxiliary components (16) for assisting cleaning are arranged on both sides of the filter frame (6), and the auxiliary components (16) include a first connecting block (1601), a connecting spring (1602) and a second connecting block (1603), a side plate (15) is fixedly mounted on the outer surface of the first connecting block (1601), and a connecting spring (1602) is arranged in the middle of the outer surface of one side of the first connecting block (1601), the second connecting block (1603) is installed at the end of the connecting spring (1602), and the filter frame (6) is arranged on the outer surface of the end of the second connecting block (1603).
7. A boiler induced draft fan according to claim 6, characterized in that: The auxiliary component (16) further comprises a roller (1604) and bristles (1605), and the side panels (15) are provided with two groups, the roller (1604) is rotatably mounted between the two groups of side panels (15), and the bristles (1605) are distributed in an annular manner on the outer surface of the roller (1604).