Anti-blocking synergistic mechanism of centrifugal fan

Abstract

An air inlet bin is installed at the air inlet end of a centrifugal fan body, square and round conversion connectors used for being connected with a pipeline are arranged at the two ends of the air inlet bin, a U-shaped installation groove is formed in the air inlet bin, an assembly opening is formed in the position, opposite to the U-shaped installation groove, of the top face of the air inlet bin, and the U-shaped installation groove is connected with the assembly opening. The utility model relates to the technical field of energy-saving and consumption-reducing technical transformation of centrifugal fans, in the maintenance operation period of the centrifugal fan, the ash removal air cylinder is started, the ash removal air cylinder is used for pushing the ash removal assembly to act, the filter screen plate is impacted, the filter screen plate is driven to rotate, the filter screen plate is driven to rotate, and the filter screen plate is driven to rotate. And meanwhile, the dust discharging fan and the dust discharging valve are started, the cleaned dust is rapidly guided out, the amount of dust entering the centrifugal fan body is effectively reduced, the dust is prevented from blocking an air flue, and meanwhile the operation energy consumption of the fan is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of energy-saving and consumption-reducing technical transformation of centrifugal fans, in particular to a centrifugal fan anti-blocking and efficiency-enhancing mechanism. Background Art

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas. They are a type of driven fluid machinery. Centrifugal fans are widely used for ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings. After long-term use, especially in an environment with a lot of dust, dust is easily accumulated in the fan after long-term use, affecting the normal use of the equipment, resulting in increased energy consumption of the centrifugal fan and high difficulty and complexity in maintenance. The Chinese patent application with authorization announcement number CN216922560U discloses an energy-saving centrifugal fan for cement production. Through a liftable filter plate and a dust removal mechanism that can knock on the filter plate, automatic dust removal of the filter plate is effectively achieved, the difficulty of manual cleaning is effectively reduced, and the automation of dust removal operations is achieved. However, the scheme has the following defects: 1. The cleaning operation of the filter plate still requires a lot of manual intervention, and the degree of automation is low; 2. There is no effective seal between the filter plate and the air inlet pipe, which is prone to air leakage, increasing the energy consumption of the centrifugal fan, and has poor practicality. In view of this, in-depth research on the above-mentioned problems resulted in this case. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a centrifugal fan anti-blocking efficiency-enhancing mechanism, which solves the problems raised in the background technology.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a centrifugal fan anti-blocking and efficiency-enhancing mechanism, an air inlet bin is installed at the air inlet end of the centrifugal fan body, both ends of the air inlet bin are provided with square-round conversion joints for connecting with the pipeline, a U-shaped mounting groove is arranged in the air inlet bin, an assembly opening is opened on the top surface of the air inlet bin for the position of the U-shaped mounting groove, a rectangular mounting seat is arranged at the position of the assembly opening, a filter screen plate is inserted in the U-shaped mounting groove, a sealing connection component is provided at the upper end of the filter screen plate, and the sealing connection component is assembled and fixed to the rectangular mounting seat, a ash hopper is provided at the bottom of the air inlet bin, a mounting plate is provided on one side of the ash hopper, a ash cleaning component is provided at the mounting plate position, the lower end of the ash cleaning component passes through the lower end surface of the air inlet bin and is connected to the ash cleaning cylinder, a ash discharge valve is installed at the bottom of the ash hopper, and a dust exhaust fan is connected to the lower part of the ash discharge valve.

[0005] The above-mentioned cleaning component includes a guide support, a cross bar, a support and a collision roller. The guide support slides through the bottom surface of the mounting plate and is connected to the telescopic end of the cleaning cylinder. The cross bar is arranged on the guide support. The support is connected to the cross bar through a spring. The collision roller is rotatably arranged on the support.

[0006] The guide support comprises a sealing sleeve, a guide rod and a fixing frame. The sealing sleeve is embedded in the mounting plate. The guide rod is inserted into the sealing sleeve and slidingly sealed with the sealing sleeve. The fixing frame is welded and fixed to the guide rod and the lower end is connected to the telescopic end of the cleaning cylinder.

[0007] The above-mentioned sealing connection assembly includes a connecting seat, which is welded to the filter screen frame. A stepped boss is provided on the connecting seat, and a sealing strip is provided on the step surface of the stepped boss. A cover plate is welded to the top of the connecting seat, and the cover plate is locked with the mounting seat through a snap-fit ​​piece.

[0008] The above-mentioned clamping member includes a rotating seat, a clamping plate and a fixing pin. The rotating seat is arranged on the mounting seat, one end of the clamping plate is rotatably connected to the rotating seat, and the fixing pin is welded to the cover plate and clamped and fixed with the clamping plate.

[0009] A handle is welded on the top of the cover plate.

[0010] The utility model provides a centrifugal fan anti-blocking efficiency enhancement mechanism. It has the following beneficial effects: the centrifugal fan anti-blocking efficiency enhancement mechanism transforms the air inlet end of the existing centrifugal fan body, adds an air inlet bin between the air inlet duct and the air inlet of the centrifugal machine body, inserts a filter screen plate in the air inlet bin, and the filter screen plate and the air inlet bin are sealed and assembled through a sealing connection component. A dust collecting hopper and a dust cleaning component are arranged at the bottom of the air inlet bin. During the maintenance operation of the centrifugal fan, the dust cleaning cylinder is started, and the dust cleaning component is driven by the dust cleaning cylinder to hit the filter screen plate, and then the dust on the filter screen plate is cleaned off under the action of vibration. At the same time, the dust exhaust fan and the dust exhaust valve are started to quickly guide the cleaned dust out, effectively reducing the amount of dust entering the interior of the centrifugal fan body, avoiding dust blocking the air duct, and effectively reducing the fan operation energy consumption. The structure is simple, the degree of automation is high, and manual intervention is less. After a period of use, the filter screen plate can be taken out for cleaning or replacement, and the operation is extremely convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main structure of the centrifugal fan anti-blocking and efficiency-enhancing mechanism of the utility model.

[0012] Figure 2 It is a partial top view structural schematic diagram of the centrifugal fan anti-blocking and efficiency-enhancing mechanism of the utility model.

[0013] Figure 3 For this utility model Figure 1 Schematic diagram of the local enlarged structure at position a.

[0014] Figure 4 For this utility model Figure 1 Schematic diagram of the local enlarged structure at position b.

[0015] In the figure: 1. Centrifugal fan body; 2. Air inlet bin; 3. Square-round conversion joint; 4. U-shaped mounting groove; 5. Rectangular mounting seat; 6. Filter screen plate; 7. Ash collecting hopper; 8. Mounting plate; 9. Ash cleaning cylinder; 10. Ash discharge valve; 11. Dust exhaust fan; 12. Cross bar; 13. Support; 14. Collision roller; 15. Sealing sleeve; 16. Guide rod; 17. Fixed bracket; 18. Connecting seat; 19. Step boss; 20. Sealing strip; 21. Rotating seat; 22. Snap-in plate; 23. Fixing pin; 24. Handle. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Embodiment: In conjunction with the specification Figure 1-4It can be seen that the present scheme specifically designs a centrifugal fan anti-blocking efficiency-enhancing mechanism, an air inlet bin 2 is installed at the air inlet end of the centrifugal fan body 1, and both ends of the air inlet bin 2 are provided with square-round conversion joints 3 for connecting with the pipeline, a U-shaped mounting groove 4 is arranged in the air inlet bin 2, and an assembly opening is opened on the top surface of the air inlet bin 2 for the position of the U-shaped mounting groove 4, and a rectangular mounting seat 5 is arranged at the assembly opening position, a filter screen plate 6 is inserted in the U-shaped mounting groove 4, and a sealing connection component is arranged on the upper end of the filter screen plate 6, and the sealing connection component is assembled and fixed to the rectangular mounting seat 5, a dust collecting hopper 7 is arranged at the bottom of the air inlet bin 2, a mounting plate 8 is arranged on one side of the ash collecting hopper 7, and a dust cleaning component is arranged at the mounting plate 8, the lower end of the dust cleaning component passes through the lower end surface of the air inlet bin 2 and is connected to the dust cleaning cylinder 9, a dust discharge valve 10 is installed at the bottom of the ash collecting hopper 7, and a dust exhaust fan 11 is connected to the lower part of the ash discharge valve 10, The air inlet end is modified, and an air inlet bin 2 is added between the air inlet duct and the air inlet of the centrifuge body. A filter screen plate 6 is inserted in the air inlet bin 2, and the filter screen plate 6 and the air inlet bin 2 are sealed and assembled through a sealing connection component. A dust collecting hopper 7 and a dust cleaning component are arranged at the bottom of the air inlet bin 2. During the maintenance operation of the centrifugal fan, the dust cleaning cylinder 9 is started, and the dust cleaning cylinder 9 is used to push the dust cleaning component to hit the filter screen plate 6, and then the dust on the filter screen plate 6 is cleaned off under the action of vibration, and the dust exhaust fan 11 and the dust exhaust valve 10 are started at the same time to quickly guide the cleaned dust out, effectively reducing the amount of dust entering the inside of the centrifugal fan body 1, avoiding dust clogging the air duct, and effectively reducing the energy consumption of the fan operation. The structure is simple, the degree of automation is high, and manual intervention is less. After a period of use, the filter screen plate 6 can be taken out for cleaning or replacement, and the operation is extremely convenient.

[0018] In the specific implementation process, as a preferred setting, the above-mentioned cleaning component includes a guide support, a cross bar 12, a support 13 and a collision roller 14. The guide support slides through the bottom surface of the mounting plate 8 and is connected to the telescopic end of the cleaning cylinder 9. The cross bar 12 is arranged on the guide support, and the support 13 is connected to the cross bar 12 through a spring. The collision roller 14 is rotatably arranged on the support 13, wherein the guide support includes a sealing sleeve 15, a guide rod 16 and a fixing frame 17, the sealing sleeve 15 is embedded in the mounting plate 8, and the guide rod 16 is inserted in the sealing sleeve 15 and slides with the sealing sleeve 15 Sealed, the fixing frame 17 is welded and fixed to the guide rod 16 and the lower end is connected to the telescopic end of the cleaning cylinder 9. When in use, the cleaning cylinder 9 is started to control the telescopic end of the cleaning cylinder 9 to perform reciprocating motion, thereby pushing the fixing frame 17 and the guide rod 16 to perform reciprocating motion in the vertical direction. At this time, the collision roller 14 on the support 13 contacts the filter screen plate 6 under the action of the spring push, and continuously collides with the filter screen plate 6 during the up and down movement of the collision roller 14. Under the action of the vibration force, the dust particles attached to the filter screen plate 6 are cleared off. The structure is simple and the degree of automation is high.

[0019] In the specific implementation process, as a preferred setting, the above-mentioned sealing connection assembly includes a connecting seat 18, the connecting seat 18 is welded to the frame of the filter screen plate 6, a stepped boss 19 is provided on the connecting seat 18, and a sealing strip 20 is provided on the step surface of the stepped boss 19. A cover plate is welded to the top of the connecting seat 18, and the cover plate and the mounting seat are locked and matched by a clamping member, wherein the clamping member includes a rotating seat 21, a clamping plate 22 and a fixing pin 23, the rotating seat 21 is arranged on the mounting seat, one end of the clamping plate 22 is rotatably connected to the rotating seat 21, and the fixing pin 23 is welded to the cover plate and clamped with the clamping plate 22. A handle 24 is welded to the top of the cover plate. When in use, the sealing cooperation between the top of the filter screen plate 6 and the air inlet bin 2 is achieved through the cooperation of the stepped boss 19 and the sealing strip 20, and the limit locking of the cover plate and the filter screen plate 6 is achieved through the snap-fitting parts, thereby effectively improving the sealing performance of the connection position. When the filter screen plate 6 needs to be cleaned or replaced, the snap-fitting plate 22 is pulled to separate the snap-fitting plate 22 from the position of the fixing pin 23, the cover plate is lifted by holding the handle 24, and the filter screen plate 6 is then lifted to the outside of the air inlet bin 2. The design is reasonable, the reliability is good, and the practicability is strong.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The centrifugal fan anti-blocking efficiency enhancement mechanism is characterized by: An air inlet bin is installed at the air inlet end of the centrifugal fan body, and both ends of the air inlet bin are provided with square-round conversion joints for connecting with the pipeline, a U-shaped mounting groove is arranged in the air inlet bin, and an assembly opening is opened on the top surface of the air inlet bin for the position of the U-shaped mounting groove, and a rectangular mounting seat is arranged at the assembly opening position, and a filter screen plate is inserted in the U-shaped mounting groove, and a sealing connection component is provided at the upper end of the filter screen plate, and the sealing connection component is assembled and fixed to the rectangular mounting seat, a ash hopper is arranged at the bottom of the air inlet bin, a mounting plate is arranged on one side of the ash hopper, and a cleaning component is arranged at the mounting plate position, the lower end of the cleaning component passes through the lower end surface of the air inlet bin and is connected to the cleaning cylinder, a ash discharge valve is installed at the bottom of the ash hopper, and a dust discharge fan is connected to the lower part of the ash discharge valve.

2. The centrifugal fan anti-blocking and efficiency-enhancing mechanism according to claim 1, characterized in that: The cleaning assembly includes a guide support, a cross bar, a support and a collision roller. The guide support slides through the bottom surface of the mounting plate and is connected to the telescopic end of the cleaning cylinder. The cross bar is arranged on the guide support. The support is connected to the cross bar through a spring. The collision roller is rotatably arranged on the support.

3. The centrifugal fan anti-blocking and efficiency-enhancing mechanism according to claim 2, characterized in that: The guide support comprises a sealing sleeve, a guide rod and a fixing frame. The sealing sleeve is embedded in the mounting plate. The guide rod is inserted into the sealing sleeve and slidingly sealed with the sealing sleeve. The fixing frame is welded and fixed to the guide rod and the lower end is connected to the telescopic end of the cleaning cylinder.

4. The centrifugal fan anti-blocking and efficiency-enhancing mechanism according to claim 1, characterized in that: The sealing connection assembly includes a connecting seat, which is welded to the filter screen frame. A stepped boss is provided on the connecting seat, a sealing strip is provided on the step surface of the stepped boss, a cover plate is welded to the top of the connecting seat, and the cover plate is locked with the mounting seat through a snap-fit ​​piece.

5. The centrifugal fan anti-blocking and efficiency-enhancing mechanism according to claim 4, characterized in that: The clamping member comprises a rotating seat, a clamping plate and a fixing pin. The rotating seat is arranged on the mounting seat. One end of the clamping plate is rotatably connected to the rotating seat. The fixing pin is welded to the cover plate and clamped and fixed to the clamping plate.

6. The centrifugal fan anti-blocking and efficiency-enhancing mechanism according to claim 4, characterized in that: A handle is welded on the top of the cover plate.

Images