Fireproof airtight air door

Abstract

The utility model provides a kind of fireproof airtight air control door, it is related to fireproof airtight air control door technical field, including body, air control board, bottom shaft, inner hexagonal flat round head screw and locking nut, the outer wall of body is fixedly installed handle seat.The utility model is directly filled up the gap between shaft body and body by being symmetrical with sealing ring outside bottom shaft and handle shaft, cut off airflow leakage from key connecting part, significantly improve overall airtightness, while the elastic washer of air control board outside sleeve not only can enhance the cushioning performance of component connection, avoid the problem of loosening caused by vibration in long-term use, its elastic deformation characteristics can further match the contact surface of air control board and body, auxiliary fill up tiny gap, cooperate sealing washer to strengthen sealing effect, furthermore, the thread connection structure of inner hexagonal flat round head screw and locking nut, ensure that bottom shaft, handle shaft and air control board are fixed firm, cooperate the smooth rotation design of handle shaft and relevant components, the opening and closing of air control board is accurate and convenient.

Description

Technical Field

[0001] This utility model relates to the field of fireproof and airtight adjustable damper technology, and in particular to a fireproof and airtight adjustable damper. Background Technology

[0002] In industrial production, building ventilation, and special equipment heat dissipation, dampers are key components for controlling airflow direction, flow rate, and pressure. Their performance directly affects system operating efficiency, safety protection level, and energy consumption control effect.

[0003] Existing dampers often suffer from insufficient fire resistance and poor airtightness in practical applications. Some products still have gaps when closed, leading to air leakage, and they are ineffective in preventing the spread of flames and smoke in high-temperature or fire scenarios. Furthermore, the connection structure of traditional dampers lacks stability, and after long-term use, components are prone to loosening and adjustment jamming, affecting the accuracy of ventilation regulation and the lifespan of the equipment. They fail to meet the high standards of safety protection and sealing performance required in industrial production and building ventilation scenarios, thus necessitating improvements. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a fireproof and airtight regulating damper.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fireproof and airtight regulating damper, comprising a body, a regulating plate, a bottom shaft, hexagonal flat head screws and locking nuts, a handle seat fixedly installed on the outer wall of the body, a handle shaft passing through the handle seat and the interior of the body, a nut being threaded into the interior of the handle seat, a handle lever fixedly installed on the outer wall of the end of the handle shaft away from the body, a brake handle fixedly installed on the outer side of the handle lever, a spring washer sleeved on the exterior of the regulating plate, and sealing rings symmetrically sleeved on the exterior of the bottom shaft and the handle shaft.

[0006] Preferably, the handle shaft is rotatably connected to the handle seat, the body, and the nut.

[0007] Preferably, the bottom shaft is rotatably connected to the body.

[0008] Preferably, both the bottom shaft and the handle shaft are fixed to the air regulating plate by hexagonal flathead screws and locking nuts.

[0009] Preferably, the internal hexagonal flat head screw and the locking nut are threaded together.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by symmetrically sleeved sealing rings on the outside of the bottom shaft and the handle shaft, the gap between the shaft and the main body can be directly filled, blocking airflow leakage from key connection points and significantly improving overall airtightness. At the same time, the spring washers sleeved on the outside of the air regulating plate not only enhance the buffering performance of the component connection and avoid loosening caused by vibration during long-term use, but their elastic deformation characteristics can also further conform to the contact surface between the air regulating plate and the main body, helping to fill tiny gaps and strengthening the sealing effect in conjunction with the sealing rings. Furthermore, the threaded connection structure of the hexagonal flat round head screws and locking nuts ensures that the bottom shaft, handle shaft, and air regulating plate are firmly fixed. Combined with the smooth rotation design of the handle shaft and related components, the opening and closing adjustment of the air regulating plate is precise and convenient. The overall structure takes into account both fireproof materials and sealing design, which can effectively block the spread of flames and smoke in fire scenarios and maintain stable sealing and adjustment performance for a long time, extending the service life of the equipment. It is suitable for various ventilation scenarios with high safety and sealing requirements, such as industry and construction. Attached Figure Description

[0011] Figure 1 This utility model provides an overall structural schematic diagram of a fireproof and airtight regulating damper; Figure 2 This utility model provides a cross-sectional structural diagram of a fireproof and airtight regulating damper.

[0012] Illustration: 1. Body; 2. Air regulating plate; 3. Bottom shaft; 4. Handle shaft; 5. Sealing ring; 6. Handle seat; 7. Nut; 8. Handle lever; 9. Brake handle; 10. Socket head cap screw; 11. Locking nut; 12. Spring washer. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0014] Many specific details are set forth in the following description in order 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. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0015] Example: Figures 1-2As shown, this utility model provides a technical solution: a fireproof and airtight regulating damper, including a body 1, a regulating plate 2, a bottom shaft 3, an internal hexagonal flat round head screw 10 and a locking nut 11. A handle seat 6 is fixedly installed on the outer wall of the body 1. A handle shaft 4 is provided through the handle seat 6 and the interior of the body 1. A nut 7 is threadedly connected to the interior of the handle seat 6. A handle lever 8 is fixedly installed on the outer wall of the end of the handle shaft 4 away from the body 1. A brake handle 9 is fixedly installed on the outer side of the handle lever 8. A spring washer 12 is sleeved on the outside of the regulating plate 2. Sealing rings 5 ​​are symmetrically sleeved on the outside of the bottom shaft 3 and the handle shaft 4. The handle shaft 4 is rotatably connected to the handle seat 6, the body 1 and the nut 7. The bottom shaft 3 is rotatably connected to the body 1. The bottom shaft 3 and the handle shaft 4 are both fixed to the regulating plate 2 by the internal hexagonal flat round head screw 10 and the locking nut 11. The internal hexagonal flat round head screw 10 and the locking nut 11 are threadedly connected.

[0016] In this embodiment, by symmetrically sleeved with sealing rings 5 ​​on the outside of the bottom shaft 3 and the handle shaft 4, the gap between the shaft and the body 1 can be directly filled, blocking airflow leakage from key connection points and significantly improving overall air tightness. At the same time, the spring washer 12 sleeved on the outside of the air regulating plate 2 not only enhances the buffer performance of the component connection and avoids loosening caused by vibration during long-term use, but its elastic deformation characteristics can also further fit the contact surface between the air regulating plate 2 and the body 1, helping to fill tiny gaps and strengthening the sealing effect in conjunction with the sealing ring 5. Furthermore, the threaded connection structure of the hexagonal flat head screw 10 and the locking nut 11 ensures that the bottom shaft 3, the handle shaft 4 and the air regulating plate 2 are firmly fixed. Combined with the smooth rotation design of the handle shaft 4 and related components, the opening and closing adjustment of the air regulating plate 2 is precise and convenient. The overall structure takes into account both fireproof materials and sealing design, which can effectively block the spread of flames and smoke in fire scenarios and maintain stable sealing and adjustment performance for a long time, extending the service life of the equipment. It is suitable for various ventilation scenarios with high safety and sealing requirements, such as industry and construction.

[0017] The working principle of this embodiment is as follows: During use, the brake handle 9 is operated to rotate the handle lever 8, which in turn drives the handle shaft 4 to rotate between the handle seat 6, the body 1, and the nut 7. Since both the bottom shaft 3 and the handle shaft 4 are fixedly connected to the air regulating plate 2 by the hexagonal flat head screw 10 and the locking nut 11, the rotation of the handle shaft 4 will synchronously drive the bottom shaft 3 and the air regulating plate 2 to rotate together, thereby adjusting the opening and closing angle of the air regulating plate 2 to control the ventilation volume. In the closed state, the air regulating plate 2 is in contact with the body 1, and the sealing ring 5 and the spring washer 12 play a sealing role to block the airflow channel and ensure airtightness. At the same time, the overall structure is equipped with fireproof materials, which can block the spread of flames and smoke in fire scenarios. The nut 7 in the handle seat 6 ensures that the handle shaft 4 is installed firmly, maintaining sealing performance and adjustment accuracy throughout the process, and is suitable for various high-requirement ventilation scenarios.

[0018] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A fireproof and airtight regulating damper, comprising a body (1), a regulating plate (2), a bottom shaft (3), an internal hexagonal flat head screw (10), and a locking nut (11), characterized in that: A handle seat (6) is fixedly installed on the outer wall of the main body (1). A handle shaft (4) is provided through the handle seat (6) and the interior of the main body (1). A nut (7) is threadedly connected inside the handle seat (6). A handle lever (8) is fixedly installed on the outer wall of the end of the handle shaft (4) away from the main body (1). A brake handle (9) is fixedly installed on the outer side of the handle lever (8). A spring washer (12) is sleeved on the outside of the air regulating plate (2). Sealing rings (5) are symmetrically sleeved on the outside of the bottom shaft (3) and the handle shaft (4).

2. The fireproof and airtight regulating damper according to claim 1, characterized in that: The handle shaft (4) is rotatably connected to the handle seat (6), the body (1) and the nut (7).

3. The fireproof and airtight regulating damper according to claim 1, characterized in that: The bottom shaft (3) is rotatably connected to the body (1).

4. The fireproof and airtight regulating damper according to claim 1, characterized in that: The bottom shaft (3) and the handle shaft (4) are both fixed to the air regulating plate (2) by internal hexagonal flat head screws (10) and locking nuts (11).

5. The fireproof and airtight regulating damper according to claim 1, characterized in that: The internal hexagonal flat head screw (10) is threadedly connected to the locking nut (11).

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