Door shaft anti-abrasion device of power station boiler air door baffle

Abstract

The utility model discloses a door shaft anti-abrasion device of a power station boiler air door baffle, which comprises a boiler body, an air door groove is arranged on the boiler body, the air door baffle is arranged on the air door groove in a rotary opening and closing mode, a protective cover is arranged on one side of the air door baffle, the protective cover is fixedly arranged on the boiler body, and a door shaft is fixedly arranged in the protective cover. The outer side of the door shaft is sleeved with a connecting sleeve, a connecting plate is fixedly arranged at the top of the connecting sleeve, the air door baffle is fixedly connected with the connecting sleeve through the connecting plate, the outer side of the connecting sleeve is further sleeved with a clamping block, and the clamping block is positioned in the protective cover through a positioning assembly. The door shaft is connected with the connecting sleeve, so that the flexibility of rotating opening and closing of the air door baffle can be ensured; and the protective cover and the clamping block are matched for use, so that the door shaft and the connecting sleeve can be comprehensively protected, media such as hot air and fly ash are prevented from entering the protective cover, large friction between the connecting sleeve and the door shaft is avoided, and damage to the door shaft is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of door hinge anti-wear devices, and in particular to a door hinge anti-wear device for a power plant boiler damper. Background Technology

[0002] Boiler dampers are key components in boiler flue gas, air, and coal piping systems. They are primarily used to regulate the flow and pressure of gas within the piping, ensuring stable boiler operation and efficient energy conversion. During the opening, closing, and rotation of the damper, it needs to be used in conjunction with a hinge to ensure both flexible operation and stability.

[0003] However, in actual use, during the rotation and opening and closing of the damper baffle and the door hinge, dust can easily enter between the door hinge and the connecting sleeve, causing hot air, fly ash and other media to come into contact with the door hinge, thereby increasing the wear of the door hinge, reducing the service life of the door hinge, and resulting in poor performance. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a door shaft anti-wear device for a power plant boiler damper, which solves the problem that when the damper is in use, hot air, fly ash, and other media come into contact with the door shaft, causing increased wear and reduced service life of the door shaft.

[0005] This utility model is implemented as follows:

[0006] A door shaft anti-wear device for a power plant boiler damper includes a boiler body with a damper groove. A damper is rotatably opened and closed on the damper groove. A protective cover is provided on one side of the damper and is fixed to the boiler body. A door shaft is fixed inside the protective cover. A connecting sleeve is fitted on the outside of the door shaft. A connecting plate is fixed on the top of the connecting sleeve. The damper is fixedly connected to the connecting sleeve through the connecting plate. A locking block is also fitted on the outside of the connecting sleeve and is positioned inside the protective cover by a positioning component.

[0007] Furthermore, a slot is provided on the side of the protective cover away from the damper, and a slot is also provided on the side wall of the card block, with the two slots corresponding to each other.

[0008] Furthermore, the positioning component includes a fixed plate fixedly mounted on the boiler body, a pull rod passing through the fixed plate, a pull block fixedly connected to one end of the pull rod, a moving block fixedly connected to the other end, and an insertion rod fixedly mounted on the side of the moving block away from the pull rod, the insertion rod being inserted into two slots in sequence.

[0009] Furthermore, a spring is fitted on the outside of the pull rod, with one end of the spring fixedly connected to the fixed plate and the other end fixedly connected to the moving block.

[0010] Furthermore, an elastic hose is fitted around the outside of the spring, with one end of the elastic hose fixedly connected to the fixed plate and the other end fixedly connected to the moving block.

[0011] Furthermore, a guide rod is also fixedly installed on the fixed plate. One end of the guide rod is fixedly connected to the fixed plate, and the other end passes through the movable block. The movable block is slidably connected to the guide rod.

[0012] Furthermore, a positioning block is fixed on the boiler body. The positioning block is located on the other side of the damper. An avoidance groove is opened on the positioning block. A docking block is fixed on the other side of the damper. The docking block is engaged or separated from the avoidance groove by a limiting component.

[0013] Furthermore, the limiting component includes an auxiliary rod erected on top of the positioning block, a retaining block slidably sleeved on the outside of the auxiliary rod, and an insert plate fixedly connected to the bottom of the retaining block, the insert plate being slidably inserted into the positioning block.

[0014] Furthermore, a limiting ring is fixed to the outer wall of the connecting sleeve, with the top of the limiting ring abutting against the bottom of the locking block.

[0015] Furthermore, a handle is fixedly connected to the other side of the damper.

[0016] The beneficial effects of this utility model are:

[0017] This utility model discloses an anti-wear device for the damper hinge of a power plant boiler. Through the connection between the damper hinge and the connecting sleeve, it ensures the flexibility of the damper hinge's rotation and opening / closing. Combined with the use of a protective cover and locking blocks, it provides comprehensive protection for the damper hinge and connecting sleeve, preventing hot air, fly ash, and other media from entering the protective cover, avoiding excessive friction between the connecting sleeve and the damper hinge, and reducing damage to the damper hinge. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is the utility model Figure 2 A three-dimensional sectional view at point AA;

[0021] Figure 4 This is the utility model Figure 3 A magnified view of part B;

[0022] Figure 5 This is the utility model Figure 1 A magnified view of part A;

[0023] Figure 6 This is the front view of this utility model;

[0024] Figure 7 This is the utility model Figure 6 A three-dimensional sectional view at point BB.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Boiler body; 11. Damper slot; 12. Damper baffle; 13. Protective cover; 14. Door hinge; 15. Connecting sleeve; 16. Connecting plate; 17. Locking block; 18. Slot; 19. Insert rod; 20. Moving block; 21. Guide rod; 22. Pulling rod; 23. Fixing plate; 24. Spring; 31. Flexible hose; 41. Positioning block; 42. Clearance slot; 43. Connecting block; 44. Inserting plate; 51. Auxiliary rod; 52. Fixing block; 61. Limiting ring; 71. Pulling block; 81. Handle. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figures 1 to 7 The diagram shows the anti-wear device for the damper baffle of a power plant boiler according to this utility model. It includes a boiler body 1, on which a damper groove 11 is provided. A damper baffle 12 is rotatably opened and closed on the damper groove 11. A protective cover 13 is provided on one side of the damper baffle 12. The protective cover 13 is fixed on the boiler body 1. A door shaft 14 is vertically fixed on the bottom wall of the inner wall of the protective cover 13. A connecting sleeve 15 is sleeved on the outer side of the door shaft 14. A connecting plate 16 is fixed on the top of the connecting sleeve 15. The connecting plate 16 covers the top of the protective cover 13, and the bottom of the connecting plate 16 abuts against the top of the protective cover 13. The damper baffle 12 is fixedly connected to the connecting sleeve 15 through the connecting plate 16. A locking block 17 is also sleeved on the outer side of the connecting sleeve 15. The locking block 17 is positioned inside the protective cover 13 by a positioning component.

[0029] A connecting sleeve 15 is fitted onto the outer side of the door hinge 14. The connecting sleeve 15 is rotatably connected to the door hinge 14. The connection between the door hinge 14 and the connecting sleeve 15 ensures the flexibility of the damper 12 in opening and closing. In conjunction with the protective cover 13 and the locking block 17, the door hinge 14 and the connecting sleeve 15 are fully protected, preventing hot air, fly ash, and other media from entering the protective cover 13, avoiding excessive friction between the connecting sleeve 15 and the door hinge 14, and reducing damage to the door hinge 14.

[0030] To limit the movement of the locking block 17 and ensure its stability, a limiting ring 61 is fixed to the outer wall of the connecting sleeve 15, with the top of the limiting ring 61 abutting against the bottom of the locking block 17. The limiting ring 61 effectively limits the movement of the locking block 17, ensuring its stability. While the connecting sleeve 15 and the locking block 17 rotate, no wobbling or displacement occurs, thus improving the stability of the locking block 17.

[0031] like Figures 2-4 As shown, a slot 18 is provided on the side of the protective cover 13 away from the damper 12, and a slot 18 is also provided on the side wall of the locking block 17. The two slots 18 are configured to cooperate with each other. The positioning assembly includes a fixing plate 23 fixedly mounted on the boiler body 1. A pull rod 22 is passed through the fixing plate 23. One end of the pull rod 22 is fixedly connected to a pull block 71, and the other end is fixedly connected to a moving block 20. An insertion rod 19 is fixedly provided on the side of the moving block 20 away from the pull rod 22. The insertion rod 19 is inserted into the two slots 18 in sequence. By using the pull block 71, the pull block 71 can move the pull rod 22 flexibly, thereby moving the pull rod 22, the moving block 20, and the insertion rod 19, so that the insertion rod 19 can be separated from the locking block 17 and the protective cover 13, making it easy to unlock the locking block 17.

[0032] A spring 24 is fitted on the outer side of the pull rod 22. One end of the spring 24 is fixedly connected to the fixed plate 23, and the other end is fixedly connected to the moving block 20. In conjunction with the spring 24, the moving block 20, and the insert rod 19, the locking block 17 can be fixed, ensuring that the locking block 17 is sufficiently stable during use and will not loosen, thus improving stability.

[0033] An elastic hose 31 is fitted around the outside of the spring 24. One end of the elastic hose 31 is fixedly connected to the fixed plate 23, and the other end is fixedly connected to the moving block 20. The use of the elastic hose 31 can protect the spring 24, preventing it from being in contact with air for a long time and causing it to rust. This effectively protects the spring 24 and extends its service life.

[0034] A guide rod 21 is also fixedly mounted on the fixed plate 23. The guide rod 21 is arranged parallel to the pulling rod 22. One end of the guide rod 21 is fixedly connected to the fixed plate 23, and the other end passes through the moving block 20. The moving block 20 is slidably connected to the guide rod 21. The guide rod 21 allows the moving block 20 to reciprocate along the axial direction of the guide rod 21, ensuring smooth movement.

[0035] like Figure 1 and Figure 5As shown, a positioning block 41 is also fixed on the boiler body 1. The positioning block 41 is located on the other side of the damper 12. An avoidance groove 42 is provided on the positioning block 41. A docking block 43 is fixed on the other side of the damper 12. The docking block 43 is engaged or disengaged from the avoidance groove 42 by a limiting component. The limiting component includes an auxiliary rod 51 erected on the top of the positioning block 41. A fixing block 52 is slidably sleeved on the outside of the auxiliary rod 51. An insert plate 44 is fixedly connected to the bottom of the fixing block 52. The insert plate 44 is slidably inserted into the sliding groove (not shown in the figure) of the positioning block 41. The insert plate 44 moves up and down vertically and abuts or disengages from the docking block 43. When the insert plate 44 descends to abut against the docking block 43, it blocks the docking block 43 to restrict the free movement of the docking block 43, thereby limiting the damper 12 in the closed state. When the insert plate 44 rises to the point of separation from the docking block 43, the insert plate 44 no longer obstructs the docking block 43. At this time, the damper baffle 12 and the docking block 43 can rotate, and the damper baffle 12 can be opened. Through the use of the auxiliary rod 51 and the retaining block 52, the retaining block 52 slides flexibly on the auxiliary rod 51, ensuring the stability of the insert plate 44's up and down movement, and preventing the insert plate 44 from shaking arbitrarily while it rises and falls flexibly.

[0036] To enable flexible rotation and opening / closing of the damper 12, a handle 81 is fixedly connected to the other side of the damper 12. Using the handle 81 allows for flexible opening and closing of the damper 12, improving the ease of operation during use.

[0037] In use, the anti-wear device for the damper baffle of the power plant boiler of this utility model involves a connecting sleeve 15 fitted onto the outside of the damper baffle 14 and rotatably connected to it, ensuring sufficient stability while the damper baffle 12 rotates. The pulling block 71 pulls the pulling rod 22, which in turn moves the moving block 20 and the insert rod 19 towards the fixed plate 23, compressing the spring 24 and the elastic hose 31. This facilitates complete engagement between the locking block 17 and the protective cover 13, and works in conjunction with the spring. The rebound of the flexible hose 31 and the insertion rod 19 aligns with the two slots 18, ensuring the stability of the locking block 17. Through the use of the locking block 17 and the protective cover 13, when the damper baffle 12 rotates to open and close, the door hinge 14, the connecting sleeve 15 and the locking block 17 are all locked inside the protective cover 13, which can prevent hot air, fly ash and other media from contacting the door hinge 14 and avoid generating large friction. It can provide comprehensive protection for the door hinge 14 and the connecting sleeve 15, thereby realizing the use of the entire door hinge anti-wear device.

[0038] When it is necessary to rotate and open the damper 12, push the retaining block 52 upward. As the retaining block 52 rises along the auxiliary rod 51, it drives the insert plate 44 to rise until it separates from the docking block 43 on the damper 12. At this time, the insert plate 44 no longer blocks the docking block 43. The damper 12 and the docking block 43 can then rotate freely to open the damper 12. Then release the retaining block 52, and the retaining block 52 will descend to the top of the positioning block 41 under its own weight. When it is necessary to reverse the rotation and close the damper 12, rotate the damper 12 so that the docking block 43 on one side rotates to the clearance groove 42, and push the retaining block 52 upward again. As the retaining block 52 rises along the auxiliary rod 51, it drives the insert plate 44 to rise until the bottom of the insert plate 44 is higher than the top of the docking block 43. Then rotate the damper 12 and the docking block 43 into the clearance groove 42. After the damper 12 is closed, release the retaining block 52. The retaining block 52 drives the insert plate 44 to fall. The insert plate 44 falls freely and blocks the outside of the docking block 43 to limit the closed damper 12 and prevent it from moving or shaking.

[0039] While this utility model discloses preferred embodiments to achieve the above objectives, it is not intended to limit the structural features of this utility model. Anyone skilled in the art should know that any easily conceivable variations or modifications are possible under the technical spirit of this utility model and are covered by the patent claims of this utility model.

Claims

1. A door shaft wear prevention device for a damper of a utility boiler, characterized by, The utility model relates to a boiler body is provided with air door slot on, air door slot is provided with air door baffle that rotates and opens and shuts on, one side of air door baffle is equipped with protective cover, protective cover is fixedly equipped on boiler body, door shaft is fixedly equipped in protective cover, the outside of door shaft is equipped with connecting sleeve, the top of connecting sleeve is fixedly equipped with connecting plate, air door baffle is fixedly connected with connecting sleeve through connecting plate, the outside of connecting sleeve is also equipped with clamping block, clamping block is positioned in protective cover through positioning assembly. The side of the protective cover away from the air door baffle is provided with a slot, and the side wall of the clamping block is also provided with a slot.

2. A door shaft wear prevention device for a damper of an electric power plant boiler according to claim 1, characterized in that, The positioning assembly includes a fixed plate fixedly arranged on the boiler body, a pulling rod penetratingly arranged on the fixed plate, a pulling block fixedly connected to one end of the pulling rod, a moving block fixedly connected to the other end of the pulling rod, an insertion rod fixedly arranged on the side of the moving block away from the pulling rod, and the insertion rod is sequentially inserted into the two slots.

3. A door shaft wear prevention device for a windbox damper of a utility boiler according to claim 2, characterized in that, The outer side of the pulling rod is sleeved with a spring, one end of the spring is fixedly connected with the fixed plate, and the other end is fixedly connected with the moving block.

4. A door shaft wear prevention device for a furnace damper of a power plant boiler according to claim 3, characterized in that, The outer side of the spring is sleeved with an elastic hose, one end of the elastic hose is fixedly connected with the fixed plate, and the other end is fixedly connected with the moving block.

5. A door shaft wear prevention device for a furnace damper of a power plant boiler according to claim 4, characterized in that, The fixed plate is also fixedly provided with a guide rod, one end of the guide rod is fixedly connected with the fixed plate, and the other end is penetratingly arranged in the moving block, and the moving block is slidingly connected with the guide rod.

6. The door shaft wear reducer for a furnace damper of a power plant boiler according to claim 3, characterized by The boiler body is also fixedly provided with a positioning block, the positioning block is located on the other side of the air door baffle, the positioning block is provided with an avoiding slot, the other side of the air door baffle is fixedly provided with a butt joint block, the butt joint block is connected or separated with the avoiding slot through a limiting assembly.

7. The door shaft wear reducer for a furnace damper of a power plant boiler according to claim 1, characterized by The limiting assembly includes an auxiliary rod vertically arranged on the top of the positioning block, a fixing block slidingly sleeved with the outer side of the auxiliary rod, and an insertion plate fixedly connected to the bottom of the fixing block is slidingly inserted into the positioning block.

8. A door shaft wear prevention device for a furnace damper of a power plant boiler according to claim 7, characterized in that, The outer wall of the connecting sleeve is fixedly provided with a limiting ring, and the top of the limiting ring abuts against the bottom of the clamping block.

9. A door shaft wear protection device for a furnace damper of a utility boiler according to claim 1 or 2, characterized in that The other side of the air door baffle is fixedly connected with a handle.

10. A door shaft wear prevention device for a furnace damper of a power plant boiler according to claim 1 or 2, characterized in that, ​

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