A splayed split damper

Abstract

The utility model discloses a kind of splayed split air door, including shell;First air door and second air door are provided on the shell;The first air door includes first blade, and the first blade is connected with first rotating mechanism;The second air door includes second blade, and the second blade is connected with second rotating mechanism;The first rotating mechanism and the second rotating mechanism are connected by connecting rod mechanism;Driving device is provided on the first rotating mechanism.The utility model driving device is rotated by connecting rod mechanism to drive the first rotating mechanism and the second rotating mechanism, and then drive the synchronous rotation of first blade and second blade to realize the splayed split of blade, and the uniform regulation of air volume is realized.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to an eight-shaped double-opening damper. Background Technology

[0002] In waste gas treatment systems, the widely used louvered dampers have significant flow field control defects. Their multi-blade structure, when adjusting the opening, generates severe throttling and cutting effects on the airflow, leading to a non-uniform, highly turbulent velocity distribution downstream. This non-uniform flow field prevents the system from establishing a stable pressure-flow relationship, resulting in poor linearity and low accuracy in airflow control. This not only affects the stability of key process parameters but also increases unnecessary energy consumption by the fan.

[0003] Structurally, louvered dampers consist of multiple parallel blades with fixed gaps between them, and the blade rotation angle determines the damper opening. When exhaust gas passes through the damper, it does not flow smoothly along the duct axis but must pass through the narrow channels between the blades. The blade edges "cut" the airflow, dividing the originally continuous airflow into multiple smaller airflows. At the same time, the frictional resistance on the blade surface and the impact of the airflow induce local vortices. Especially under conditions with a small opening, the blades' obstruction of the airflow is stronger, the throttling effect is more pronounced, and a significant difference in airflow velocity forms on both sides of the blades. In some areas, the velocity increases sharply, while in other areas, the velocity decreases due to vortices, thus creating a turbulent field with a large velocity gradient and irregular flow pattern in the downstream duct. Utility Model Content

[0004] To solve the above problems, this utility model provides an eight-shaped opening damper, which achieves uniform air volume regulation by opening the first and second blades in an eight-shaped manner.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an eight-shaped double-opening damper, comprising a housing; a first damper and a second damper are provided on the housing; the first damper includes a first blade, which is connected to a first rotating mechanism; the second damper includes a second blade, which is connected to a second rotating mechanism; the first rotating mechanism and the second rotating mechanism are connected by a linkage mechanism; a driving device is provided on the first rotating mechanism.

[0006] As a preferred technical solution of this utility model: a first connecting seat is provided on the first blade; a second connecting seat is provided on the second blade.

[0007] As a preferred technical solution of this utility model: the first rotating mechanism includes a first transmission shaft and a first rear shaft; one end of the first rear shaft is rotatably disposed inside the first damper, and the other end is connected to the first connecting seat; one end of the first transmission shaft passes through the first damper and is connected to the first bearing seat, and the other end is connected to the first connecting seat.

[0008] As a preferred technical solution of this utility model: the second rotating mechanism includes a second transmission shaft and a second rear shaft; one end of the second rear shaft is rotatably disposed inside the second damper, and the other end is connected to the second connecting seat; one end of the second transmission shaft passes through the second damper and is connected to the second bearing seat, and the other end is connected to the second connecting seat.

[0009] As a preferred technical solution of this utility model: the first connecting seat and the second connecting seat are respectively provided with reinforcing ribs that are connected to the first blade and the second blade.

[0010] As a preferred technical solution of this utility model, the driving device is a crank arm.

[0011] This utility model has the following beneficial effects:

[0012] The drive unit drives the first and second rotating mechanisms to rotate through a linkage mechanism, which in turn drives the first and second blades to rotate synchronously, thereby achieving the figure-eight opening of the blades and realizing uniform airflow regulation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the novel embodiment;

[0014] Figure 2 for Figure 1 The left view;

[0015] Figure 3 for Figure 1 A sectional view along the AA direction;

[0016] Figure 4 This is a schematic diagram of the relative motion between the first and second blades;

[0017] Figures 1-4In the middle, 1. shell; 2. crank arm; 3. crossbeam; 4. first damper; 5. second damper; 6. first blade; 7. second blade; 8. first rotating mechanism; 9. second rotating mechanism; 10. drive device; 11. linkage mechanism; 12. first connecting seat; 13. second connecting seat; 14. first bearing; 15. second bearing; 16. retaining ring; 17. first drive shaft; 18. first bearing seat; 19. first rear axle; 20. second drive shaft; 21. second bearing seat; 22. second rear axle; 23. first connecting rod; 24. second connecting rod; 25. connecting rod; 26. reinforcing rib. Detailed Implementation

[0018] To make the objectives and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] like Figures 1-4 As shown, this embodiment of the utility model provides a figure-eight split damper, including a housing 1 for installation on the required duct. A crossbeam 3 is provided in the middle of the housing 1, dividing it into a first damper 4 and a second damper 5, respectively for mounting a first blade 6 and a second blade 7. The first blade 6 is connected to a first rotating mechanism 8; the second blade 7 is connected to a second rotating mechanism 9. A drive device 10 is provided on the first rotating mechanism 8; the first rotating mechanism 8 and the second rotating mechanism 9 are connected by a linkage mechanism 11. The drive device 10 drives the rotation of the first rotating mechanism 8 and the second rotating mechanism 9 through the linkage mechanism 11, thereby driving the synchronous rotation of the first blade 6 and the second blade 7 to achieve figure-eight split opening of the blades, realizing uniform airflow regulation.

[0020] First connecting seat 12 and second connecting seat 13 are respectively provided on the first blade 6 and the second blade 7. First bearing 14 and second bearing 15 are respectively provided inside the first damper 4 and the second damper 5. Retaining ring 16 is provided on the first bearing 14 and the second bearing 15. The limiting function of the retaining ring 16 ensures the smooth operation of the first blade 6 and the second blade 7. The first rotating mechanism 8 includes a first drive shaft 17 and a first rear shaft 19. One end of the first rear shaft 19 is rotatably disposed inside the housing 1 through the first bearing 14, and the other end is connected to the first connecting seat 12. One end of the first drive shaft 17 is connected to the first connecting seat 12, and the other end passes through the first bearing seat 18 and is connected to the connecting rod structure. The second rotating mechanism 9 includes a second drive shaft 20 and a second rear shaft 22. One end of the second rear shaft 22 is rotatably disposed inside the housing 1 through the second bearing 15, and the other end is connected to the second connecting seat 13. One end of the second drive shaft 20 is connected to the second connecting seat 13, and the other end passes through the second bearing seat 21 and is connected to the connecting rod structure. The first bearing housing 18 and the second bearing housing 21 are preferably spherical ball bearings with square seats. The linkage mechanism 11 includes a first connecting rod 23 mounted on the first drive shaft 17 and a second connecting rod 24 mounted on the second drive shaft 20. The first connecting rod 23 and the second connecting rod 24 are connected by a connecting rod 25, which enables the synchronous rotation of the first blade 6 and the second blade 7. The drive device 10 is preferably a crank arm 2, which is used to connect to a power device, such as an electric actuator or a pneumatic actuator. To improve the structural rigidity of the first connecting seat 12 and the second connecting seat 13, the first connecting seat 12 and the second connecting seat 13 are respectively provided with reinforcing ribs 26 that are connected to the first blade 6 and the second blade 7.

[0021] The working principle of this specific implementation is as follows: The power device rotates the crank arm 2, and the linkage mechanism 11 drives the first transmission shaft 17 and the second transmission shaft 20 to rotate. The first transmission shaft 17 drives the first blade 6 to rotate via the first connecting seat 12, and the second transmission shaft 20 drives the second blade 7 to rotate via the second connecting seat 13. The linkage mechanism 11 achieves synchronous rotation of the first transmission shaft 17 and the second transmission shaft 20. (Refer to...) Figure 4 When the rotation radius of the first blade 6 and the second blade 7 is 250 cm and the axial distance between the first blade 6 and the second blade 7 is 612 cm, according to the distance between the first blade 6 and the second blade 7 shown in the figure, it can be seen that the synchronous rotation of the first blade 6 and the second blade 7 can achieve the opening of the blades in a figure-eight pattern and uniformly adjust the air volume.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A figure-eight double-opening air vent, characterized in that: The device includes a housing (1); a first damper (4) and a second damper (5) are provided on the housing (1); the first damper (4) includes a first blade (6) which is connected to a first rotating mechanism (8); the second damper (5) includes a second blade (7) which is connected to a second rotating mechanism (9); the first rotating mechanism (8) and the second rotating mechanism (9) are connected by a linkage mechanism (11); a driving device (10) is provided on the first rotating mechanism (8).

2. The figure-eight double-opening air vent according to claim 1, characterized in that: The first blade (6) is provided with a first connecting seat (12); the second blade (7) is provided with a second connecting seat (13).

3. The figure-eight double-opening air vent according to claim 2, characterized in that: The first rotating mechanism (8) includes a first drive shaft (17) and a first rear shaft (19); one end of the first rear shaft (19) is rotatably disposed inside the first damper (4), and the other end is connected to the first connecting seat (12); one end of the first drive shaft (17) passes through the first damper (4) and is connected to the first bearing (14) seat, and the other end is connected to the first connecting seat (12).

4. The figure-eight double-leaf damper according to claim 2, characterized in that: The second rotating mechanism (9) includes a second drive shaft (20) and a second rear shaft (22); one end of the second rear shaft (22) is rotatably disposed inside the second damper (5), and the other end is connected to the second connecting seat (13); one end of the second drive shaft (20) passes through the second damper (5) and is connected to the second bearing (15) seat, and the other end is connected to the second connecting seat (13).

5. A figure-eight double-leaf damper according to any one of claims 2-4, characterized in that: The first connecting seat (12) and the second connecting seat (13) are respectively provided with reinforcing ribs (26) that are connected to the first blade (6) and the second blade (7).

6. The figure-eight double-leaf damper according to claim 1, characterized in that: The drive device (10) is a crank arm (2).

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