Air regulating mechanism for flue sealing

Abstract

The utility model discloses an air regulating mechanism for flue sealing, which comprises a flue, a baffle plate, a hinge seat, a swing arm and a rotating shaft, the flue is rectangular, a rectangular connecting frame is arranged on the inner wall of the flue, a sealing ring is arranged on the upper surface of the connecting frame, the baffle plate is positioned on the upper surface of the sealing ring, the hinge seat is arranged on the upper surface of the baffle plate, and the swing arm is arranged on the hinge seat. One end of the swing arm is rotationally connected to the hinge seat through a pin shaft, the other end of the swing arm is fixedly connected to a horizontally arranged rotating shaft, the two ends of the rotating shaft are pivoted to the side wall of the flue, and the rotating shaft is located obliquely above the pin shaft. The rotating shaft is arranged to be of an eccentric structure relative to the pin shaft, so that the sealing effect after the baffle is pressed can be greatly improved, it is guaranteed that the baffle rotates flexibly and is not jammed in the long-term use process, and the baffle can be manually opened or closed through the swing arm; in addition, a plurality of sealing rings can be combined for use, and the sealing effect can be further improved.

Description

Technical Field

[0001] This utility model belongs to the field of flue or gas-medium pipeline sealing technology, and particularly relates to an air regulating mechanism for flue sealing. Background Technology

[0002] In the petrochemical industry, flue gas ducts of heating furnaces and power plant boiler flue gas ducts are typically equipped with sealing devices to isolate flue gas from the outside air, such as hot air isolation doors and isolation baffles. These sealing devices allow for non-stop maintenance of the flue gas ducts. However, existing sealing devices, after long-term use, suffer from problems such as incomplete closure, ash accumulation causing jamming, inflexible high-temperature switches, and easy leakage, leading to increased forced shutdowns and making maintenance difficult. Utility Model Content

[0003] In order to solve the problems in the prior art, the purpose of this utility model is to provide an air regulating mechanism for flue sealing.

[0004] To achieve the above-mentioned objectives, this utility model adopts the following technical solution:

[0005] An air regulating mechanism for sealing a flue includes a flue, a baffle, a connecting hinge seat, a swing arm, and a rotating shaft. The flue is rectangular, and a rectangular connecting frame is provided on the inner wall of the flue. A sealing ring is provided on the upper surface of the connecting frame. The baffle is located on the upper surface of the sealing ring, and a hinge seat is provided on the upper surface of the baffle. One end of the swing arm is rotatably connected to the hinge seat via a pin, and the other end of the swing arm is fixedly connected to a horizontally arranged rotating shaft. Both ends of the rotating shaft are pivotally connected to the side wall of the flue, and the rotating shaft is located diagonally above the pin.

[0006] Furthermore, it also includes a spring, one end of which is connected to the lower side of the other end of the swing arm, and the other end of which is connected to the surface of the baffle.

[0007] Furthermore, the other end of the spring is connected to a lug, which is fixedly connected to the baffle.

[0008] Furthermore, a drive mechanism is provided on the outer surface of the flue, and the drive mechanism is connected to one end of the rotating shaft.

[0009] Furthermore, the hinge seat is rotatably connected to the lower side of the middle part of the swing arm via a pin, and the lower side of the other end of the swing arm abuts against the baffle.

[0010] Furthermore, the sealing ring is rectangular, and a sealing groove is provided on the upper surface of the sealing ring. A sealing strip that matches the sealing groove is provided on the lower surface of the baffle.

[0011] Due to the adoption of the above technical solution, this utility model has the following advantages:

[0012] This invention improves the sealing effect of the baffle after compression by setting the rotating shaft to an eccentric structure relative to the pin shaft. It also ensures that the baffle rotates flexibly and without jamming during long-term use. Furthermore, the baffle can be manually opened or closed by the swing arm. In addition, multiple versions of this invention can be used in combination to further improve the sealing effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 Top view;

[0015] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the baffle structure;

[0017] In the diagram: 1. Flue; 2. Spring; 3. Swing arm; 4. Rotating shaft; 5. Hinge seat; 6. Pin; 7. Baffle; 8. Sealing ring; 9. Connecting frame; 10. Drive mechanism; 11. Sealing strip. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0019] like Figure 1 , 2 As shown in Figure 3, an air regulating mechanism for sealing a flue includes a flue 1, a baffle 7, a hinge seat 5, a swing arm 3, and a rotating shaft 4. The flue is rectangular, and a rectangular connecting frame 9 is provided on the inner wall of the flue 1. A sealing ring 8 is provided on the upper surface of the connecting frame 9. The baffle 7 is located on the upper surface of the sealing ring 8, and the hinge seat 5 is provided on the upper surface of the baffle 7. One end of the swing arm 3 is rotatably connected to the hinge seat 5 through a pin 6, and the other end of the swing arm 3 is fixedly connected to the horizontally arranged rotating shaft 4. Both ends of the rotating shaft 4 are pivotally connected to the side wall of the flue, and the rotating shaft 4 is located diagonally above the pin 6.

[0020] This utility model also includes a spring 2, one end of which is connected to the lower side of the other end of the swing arm 3, and the other end of which is connected to the upper surface of the baffle 7. The other end of the spring 2 is connected to an ear plate, which is fixedly connected to the baffle 7.

[0021] A drive mechanism 10 is provided on the outer surface of the flue 1, and the drive mechanism 10 is connected to one end of the rotating shaft 4.

[0022] As a preferred embodiment of this utility model, the drive mechanism can adopt a conventional structure in the prior art, such as a motor and a reducer, or a handwheel and a worm gear assembly, with the handwheel mounted on the worm gear, the worm gear and the worm meshing, and the worm connected to the rotating shaft through a coupling.

[0023] The hinge seat 5 is rotatably connected to the lower side of the middle part of the swing arm 3 via a pin 6, and the lower side of the other end of the swing arm 3 abuts against the baffle 7.

[0024] The sealing ring 8 is rectangular, and a sealing groove is provided on the upper surface of the sealing ring 8. A sealing strip 11 that matches the sealing groove is provided on the lower surface of the baffle 7. The sealing effect can be further guaranteed by the cooperation between the sealing strip 11 and the sealing groove.

[0025] The working principle of this utility model is as follows: In the initial state, the baffle is located on the upper surface of the sealing ring, and the spaces on the upper and lower sides of the baffle in the flue are not connected. At this time, the spring is in a stretched state. When it is necessary to open the baffle, the rotating shaft rotates, which drives the swing arm to rotate. The swing arm drives the hinge seat and the baffle to rotate through the pin. Since the rotating shaft and the pin are not in the same vertical plane, the baffle is first lifted up a certain distance to separate from the sealing ring. The height of the baffle lifting can be calculated in advance according to the actual application, thereby preventing interference between the baffle and the sealing ring when the baffle is lifted and rotated. Then, since the stretched spring will gradually contract, the front end of the baffle will gradually rotate upward. During the rotation of the baffle, due to the action of the spring, the baffle will rotate smoothly without violent shaking. The swing arm continues to rotate. When the swing arm contacts the baffle, the rear end of the baffle begins to separate from the sealing ring. The swing arm continues to rotate, and the baffle gradually opens completely around the rotating shaft.

[0026] When the baffle 7 needs to be closed, the rotating shaft 4 rotates in the opposite direction, and the swing arm 3 drives the baffle 7 to rotate. The rear end of the baffle 7 first contacts the sealing ring 8. The swing arm 4 continues to rotate, and the baffle and the swing arm begin to separate. As the swing arm rotates, the baffle gradually presses down to tighten the sealing ring, thus completing the closed state.

[0027] It should be noted that in this utility model, the diameter of the baffle is larger than the inner diameter of the sealing ring, and the diameter of the baffle and the inner diameter of the sealing ring need to be configured according to the actual use.

[0028] To prevent the baffle from deflecting during the pressing of the lower end of the swing arm, as a preferred embodiment of this invention, two swing arms are provided, and the two swing arms are arranged symmetrically on the baffle.

Claims

1. A regulating mechanism for sealing flues, comprising a flue, a baffle, a connecting hinge seat, a swing arm, and a rotating shaft, characterized in that: The flue is rectangular, and a rectangular connecting frame is provided on the inner wall of the flue. A sealing ring is provided on the upper surface of the connecting frame. The baffle is located on the upper surface of the sealing ring, and a hinge seat is provided on the upper surface of the baffle. One end of the swing arm is rotatably connected to the hinge seat through a pin, and the other end of the swing arm is fixedly connected to a horizontally set rotating shaft. Both ends of the rotating shaft are pivotally connected to the side wall of the flue, and the rotating shaft is located diagonally above the pin.

2. The air regulating mechanism for flue sealing according to claim 1, characterized in that: It also includes a spring, one end of which is connected to the lower side of the other end of the swing arm, and the other end of which is connected to the surface of the baffle.

3. The air regulating mechanism for flue sealing according to claim 2, characterized in that: The other end of the spring is connected to a lug, which is fixedly connected to the baffle.

4. The air regulating mechanism for flue sealing according to claim 1, characterized in that: A drive mechanism is installed on the outer surface of the flue, and the drive mechanism is connected to one end of the rotating shaft.

5. The air regulating mechanism for flue sealing according to claim 1, characterized in that: The hinge seat is rotatably connected to the lower side of the middle part of the swing arm via a pin, and the lower side of the other end of the swing arm abuts against the baffle.

6. The air regulating mechanism for flue sealing according to claim 1, characterized in that: The sealing ring is rectangular, and a sealing groove is provided on the upper surface of the sealing ring. A sealing strip that matches the sealing groove is provided on the lower surface of the baffle.

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