A stable fume damper door

Abstract

This utility model discloses a stable flue gas damper door, which aims to solve the technical problems of existing technology where the two dampers lack a linkage adjustment mechanism, making it difficult to ensure a complete fit when closed, leaving gaps, and the dampers may experience slight displacement under high-velocity flue gas impact, leading to seal failure. The damper door includes a shielding door with multiple shielding components inside. Each shielding component includes two rectangular dampers stacked together, located inside the shielding door and rotatably connected to it. A rotating mechanism for rotating the two rectangular dampers is provided on one side of the shielding door. Through the opposing rotation design of the two symmetrical rectangular dampers, the two rectangular limiting plates form a physical sealing barrier after the dampers are closed, significantly improving the sealing effect and completely blocking the leakage path of flue gas through the edges of the rectangular dampers.

Description

Technical Field

[0001] This utility model belongs to the field of industrial flue gas, and specifically relates to a stable flue gas damper. Background Technology

[0002] In industrial flue gas treatment systems, flue gas dampers are key equipment used to control the flow of flue gas. They are widely used in flue gas desulfurization, denitrification and dust removal systems in industries such as thermal power generation, metallurgy, and chemical industry. Their core function is to effectively isolate flue gas during system maintenance or operating condition switching, prevent the leakage or backflow of harmful gases, and ensure the safe operation of the system.

[0003] Currently, most flue gas damper doors on the market adopt a single or multi-leaf rigid door panel structure, and the opening and closing of the damper is controlled by a drive mechanism. However, the existing technology still has the following problems:

[0004] Traditional flue gas damper doors use a double-baffle design, but there is no linkage adjustment mechanism between the two baffles. When closed, it is difficult to ensure a complete fit, and gaps still exist. Under the impact of high-velocity flue gas, the baffles may undergo slight displacement, leading to sealing failure. Therefore, a stable flue gas damper door is designed to overcome the above-mentioned technical defects. Utility Model Content

[0005] (1) Technical problems to be solved

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a stable flue gas damper door. This damper door aims to solve the technical problems of the lack of linkage adjustment mechanism between the two dampers in the existing technology, which makes it difficult to ensure a complete fit when closed, leaving gaps. Under the impact of high-velocity flue gas, the dampers may undergo slight displacement, leading to sealing failure.

[0007] (2) Technical solution

[0008] To solve the above-mentioned technical problems, this utility model provides a stable flue gas damper door, which includes a shielding door. The shielding door has multiple shielding components inside, and each shielding component includes two rectangular baffles stacked together. The rectangular baffles are located inside the shielding door and are rotatably connected to the shielding door. A rotating mechanism for rotating the two rectangular baffles is provided on one side of the shielding door. A longitudinal support plate is fixed inside the shielding door and between the two rectangular baffles. Rectangular limiting plates are fixedly connected to the top and bottom of the longitudinal support plate. A moving mechanism for moving the rectangular limiting plates is provided on the other side of the shielding door.

[0009] Preferably, the rotating mechanism includes a plurality of first transverse hydraulic cylinders, which are located inside the shielding door and fixedly connected to the shielding door. A vertical sliding plate is fixed to the output end of the first transverse hydraulic cylinder. A vertical connecting plate is fixed to one side of the vertical sliding plate. An oblique rotating plate is rotatably connected to the top and bottom of the vertical connecting plate via pins. A rectangular rotating plate is rotatably connected to the end of the oblique rotating plate away from the vertical connecting plate via pins. A longitudinal rotating shaft is fixed inside the end of the rectangular rotating plate away from the oblique rotating plate. The longitudinal rotating shaft passes through the interior of the shielding door and is fixedly connected to the rectangular baffle.

[0010] Preferably, a dovetail slider is fixed on the side of the vertical connecting plate near the shielding door, and a dovetail groove adapted to the dovetail slider is opened inside the shielding door. The vertical connecting plate and the shielding door are slidably connected by the cooperation of the dovetail slider and the dovetail groove.

[0011] Furthermore, the moving mechanism includes a second transverse hydraulic cylinder, which is located inside the shielding door and fixedly connected to the shielding door. A transverse sliding block is fixed to the output end of the second transverse hydraulic cylinder, and a circular connecting rod is movably connected inside the transverse sliding block. One end of the circular connecting rod is close to the rectangular limiting plate and fixedly connected to the rectangular limiting plate.

[0012] Furthermore, the interior of the transverse sliding block is provided with an oblique groove, and the circular connecting rod is located inside the oblique groove and is movably connected to the transverse sliding block through the oblique groove.

[0013] Furthermore, the circular connecting rod passes through the interior of the shielding door and the longitudinal support plate and is slidably connected to the shielding door and the longitudinal support plate.

[0014] Furthermore, the rectangular baffle has a rectangular limiting groove inside that matches the rectangular limiting plate.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention utilizes a design of two symmetrical rectangular baffles rotating in opposite directions. After the two rectangular baffles are closed, the two rectangular limiting plates form a physical sealing barrier, significantly improving the sealing effect and completely blocking the leakage path of flue gas through the edge of the rectangular baffles. It is especially suitable for high pressure differential conditions and solves the problem of sealing failure caused by airflow vibration in traditional rectangular baffles. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the shielding door of this utility model;

[0020] Figure 3 This is a structural schematic diagram of the longitudinal support plate and the rectangular limiting plate of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first horizontal hydraulic cylinder and the vertical sliding plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the vertical connecting plate and rectangular sliding block of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the second transverse hydraulic cylinder and the transverse sliding block of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the transverse sliding block and the circular connecting rod of this utility model.

[0025] The labels in the attached diagram are as follows: 1. Barrier door; 2. Rectangular baffle; 3. Longitudinal support plate; 4. Rectangular limiting plate; 5. First transverse hydraulic cylinder; 6. Vertical sliding plate; 7. Z-shaped connecting plate; 8. Vertical connecting plate; 9. Rectangular sliding block; 10. Inclined rotating plate; 11. Rectangular rotating plate; 12. Longitudinal rotation shaft; 13. Second transverse hydraulic cylinder; 14. Transverse sliding block; 15. Circular connecting rod. Detailed Implementation

[0026] This specific embodiment is a stable flue gas damper, the structural diagram of which is shown below. Figures 1-7 As shown, the baffle door includes a shielding door 1. The shielding door 1 is equipped with multiple shielding components. Each shielding component includes two rectangular baffles 2 stacked together. The rectangular baffles 2 are located inside the shielding door 1 and are rotatably connected to the shielding door 1. A rotating mechanism for rotating the two rectangular baffles 2 is provided on one side of the shielding door 1. A longitudinal support plate 3 is fixed inside the shielding door 1 and between the two rectangular baffles 2. A rectangular limiting plate 4 is fixedly connected to the top and bottom of the longitudinal support plate 3. A moving mechanism for moving the rectangular limiting plate 4 is provided on the other side of the shielding door 1.

[0027] The rotating mechanism includes multiple first horizontal hydraulic cylinders 5, which are located inside the shielding door 1 and fixedly connected to the shielding door 1. A vertical sliding plate 6 is fixed to the output end of the first horizontal hydraulic cylinder 5. A vertical connecting plate 8 is fixed to one side of the vertical sliding plate 6. An oblique rotating plate 10 is rotatably connected to the top and bottom of the vertical connecting plate 8 via a pin. A rectangular rotating plate 11 is rotatably connected to the end of the oblique rotating plate 10 away from the vertical connecting plate 8 via a pin. A longitudinal rotating shaft 12 is fixed inside the end of the rectangular rotating plate 11 away from the oblique rotating plate 10. The longitudinal rotating shaft 12 passes through the interior of the shielding door 1 and is fixedly connected to the rectangular baffle 2.

[0028] A dovetail slider is fixed on the side of the vertical connecting plate 8 near the shielding door 1. The shielding door 1 has a dovetail groove that matches the dovetail slider. The vertical connecting plate 8 and the shielding door 1 are slidably connected by the cooperation of the dovetail slider and the dovetail groove. By setting the dovetail slider and the dovetail groove, the rectangular sliding block 9 can slide inside the shielding door 1, thereby guiding the movement trajectory of the vertical connecting plate 8.

[0029] When it is necessary to seal the flue gas, the operation of the first horizontal hydraulic cylinder 5 allows the vertical sliding plate 6 to move inside the shielding door 1. The movement of the vertical sliding plate 6 enables the vertical connecting plate 8 to move through the Z-shaped connecting plate 7. The movement of the vertical connecting plate 8 enables the rectangular sliding block 9 to move inside the shielding door 1. The movement of the vertical connecting plate 8 enables the rectangular rotating plate 11 to drive the longitudinal rotating shaft 12 to rotate inside the shielding door 1 through the inclined rotating plate 10. The rotation of the longitudinal rotating shaft 12 enables the rectangular baffle 2 to rotate. When the two rectangular baffles 2 are opposite each other, they can block the flue gas and improve the sealing performance.

[0030] The moving mechanism includes a second transverse hydraulic cylinder 13, which is located inside the shielding door 1 and is fixedly connected to the shielding door 1. A transverse sliding block 14 is fixed to the output end of the second transverse hydraulic cylinder 13. A circular connecting rod 15 is movably connected inside the transverse sliding block 14. The circular connecting rod 15 is close to one end of the rectangular limiting plate 4 and is fixedly connected to the rectangular limiting plate 4.

[0031] The interior of the transverse sliding block 14 is provided with an inclined groove. The circular connecting rod 15 is located inside the inclined groove and is movably connected to the transverse sliding block 14 through the inclined groove. The inclined groove allows the movement of the second transverse hydraulic cylinder 13 to drive the circular connecting rod 15 to move inside the transverse sliding block 14, thereby allowing the rectangular limiting plate 4 to slide inside the longitudinal support plate 3.

[0032] The circular connecting rod 15 passes through the interior of the shielding door 1 and the longitudinal support plate 3 and is slidably connected to the shielding door 1 and the longitudinal support plate 3, thereby enabling the circular connecting rod 15 to slide vertically inside the shielding door 1 and the longitudinal support plate 3, thereby enabling the circular connecting rod 15 to drive the rectangular limiting plate 4 to slide vertically.

[0033] The rectangular baffle 2 has a rectangular limiting groove inside that matches the rectangular limiting plate 4. Through the operation of the second transverse hydraulic cylinder 13, the rectangular limiting plate 4 can enter the interior of the rectangular baffle 2, thereby restricting the rotation of the rectangular baffle 2 inside the shielding door 1, so that the shielding door 1 can seal and shield the flue gas, and improve the shielding effect.

[0034] Here, the operation of the second transverse hydraulic cylinder 13 enables the transverse sliding block 14 to move. The movement of the transverse sliding block 14, through the circular connecting rod 15, can drive the rectangular limiting plate 4 to slide inside the longitudinal support plate 3. When the rectangular limiting plate 4 slides into the interior of the rectangular baffle 2, it can restrict the rotation of the rectangular baffle 2 inside the blocking door 1, thereby improving the sealing effect.

[0035] By using the opposing rotation design of two symmetrical rectangular baffles 2, the two rectangular limiting plates 4 form a physical sealing barrier after the two rectangular baffles 2 are closed, which significantly improves the sealing effect and completely blocks the leakage path of flue gas through the edge of the rectangular baffles 2. It is especially suitable for high pressure differential conditions and solves the sealing failure problem caused by airflow vibration of traditional rectangular baffles 2.

[0036] Working principle: When using the baffle door of this technical solution, if it is necessary to seal the flue gas, the operation of the first horizontal hydraulic cylinder 5 allows the vertical sliding plate 6 to move inside the baffle door 1. The movement of the vertical sliding plate 6 enables the vertical connecting plate 8 to move through the Z-shaped connecting plate 7. The movement of the vertical connecting plate 8 enables the rectangular sliding block 9 to move inside the baffle door 1. The movement of the vertical connecting plate 8 enables the rectangular rotating plate 11 to drive the longitudinal rotating shaft 12 to rotate inside the baffle door 1 through the inclined rotating plate 10. The rotation of the longitudinal rotating shaft 12 enables the rectangular baffle 2 to rotate. When the two rectangular baffles 2 are opposite each other, they can block the flue gas and improve the sealing performance.

[0037] The operation of the second transverse hydraulic cylinder 13 enables the transverse sliding block 14 to move. The movement of the transverse sliding block 14, through the circular connecting rod 15, can drive the rectangular limiting plate 4 to slide inside the longitudinal support plate 3. When the rectangular limiting plate 4 slides into the interior of the rectangular baffle 2, it can restrict the rotation of the rectangular baffle 2 inside the blocking door 1, thereby improving the sealing effect.

[0038] All technical features in this embodiment can be freely combined according to actual needs.

[0039] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A stable flue gas damper door, characterized in that: The baffle door includes a shielding door (1), and the shielding door (1) is provided with multiple shielding components. The shielding components include two rectangular baffles (2) stacked together. The rectangular baffles (2) are located inside the shielding door (1) and are rotatably connected to the shielding door (1). A rotating mechanism for rotating the two rectangular baffles (2) is provided on one side of the shielding door (1). A longitudinal support plate (3) is fixed inside the shielding door (1) and between the two rectangular baffles (2). A rectangular limiting plate (4) is fixedly connected to the top and bottom of the longitudinal support plate (3). A moving mechanism for moving the rectangular limiting plate (4) is provided on the other side of the shielding door (1).

2. A stable flue gas damper door according to claim 1, characterized in that: The rotating mechanism includes multiple first horizontal hydraulic cylinders (5), which are located inside the shielding door (1) and fixedly connected to the shielding door (1). A vertical sliding plate (6) is fixed to the output end of the first horizontal hydraulic cylinder (5). A vertical connecting plate (8) is fixed to one side of the vertical sliding plate (6). An oblique rotating plate (10) is rotatably connected to the top and bottom of the vertical connecting plate (8) via a pin. A rectangular rotating plate (11) is rotatably connected to the end of the oblique rotating plate (10) away from the vertical connecting plate (8) via a pin. A longitudinal rotating shaft (12) is fixed inside the end of the rectangular rotating plate (11) away from the oblique rotating plate (10). The longitudinal rotating shaft (12) passes through the interior of the shielding door (1) and is fixedly connected to the rectangular baffle (2).

3. A stable flue gas damper door according to claim 2, characterized in that: The vertical connecting plate (8) is fixed with a dovetail slider on the side near the shielding door (1). The shielding door (1) has a dovetail groove inside that is adapted to the dovetail slider. The vertical connecting plate (8) and the shielding door (1) are slidably connected by the cooperation of the dovetail slider and the dovetail groove.

4. A stable flue gas damper door according to claim 2, characterized in that: The moving mechanism includes a second transverse hydraulic cylinder (13), which is located inside the shielding door (1) and is fixedly connected to the shielding door (1). A transverse sliding block (14) is fixed to the output end of the second transverse hydraulic cylinder (13). A circular connecting rod (15) is movably connected inside the transverse sliding block (14). The circular connecting rod (15) is close to one end of the rectangular limiting plate (4) and is fixedly connected to the rectangular limiting plate (4).

5. A stable flue gas damper door according to claim 4, characterized in that: The transverse sliding block (14) has an inclined groove inside, and the circular connecting rod (15) is located inside the inclined groove and is movably connected to the transverse sliding block (14) through the inclined groove.

6. A stable flue gas damper door according to claim 4, characterized in that: The circular connecting rod (15) passes through the interior of the shielding door (1) and the longitudinal support plate (3) and is slidably connected to the shielding door (1) and the longitudinal support plate (3).

7. A stable flue gas damper door according to claim 4, characterized in that: The rectangular baffle (2) has a rectangular limiting groove inside that is adapted to the rectangular limiting plate (4).

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