Pure-plane inward-opening cantilever type hinge high-pressure-bearing airtight door

Abstract

The utility model relates to a pure-plane inward-opening cantilever type hinge high-pressure-bearing air-tight door, and belongs to the technical field of air-tight doors. Comprising a door plate, locking structures and a steering wheel, the door plate is fixedly connected to a door frame through a high-strength sealing rubber strip, the multiple locking structures are evenly distributed on one side of the door plate, the other side of the door plate is fixedly connected with a wall through a cantilever type hinge, and the steering wheel is rotationally connected to the position beside the hinge on the other side of the door plate. The door plate has the characteristics of high structural strength and smooth inner surface, and can be used in scenes with high requirements on the flatness of the inner wall, such as high-pressure high-speed wind tunnels and high-flow liquid pipelines.

Description

Technical Field

[0001] This utility model relates to a pure planar inward-opening cantilever hinge high-pressure airtight door, belonging to the field of airtight door technology. Background Technology

[0002] In large, high-speed wind tunnel laboratories, a smooth inner surface is required to ensure stable airflow. Simultaneously, the high-speed airflow generates extremely high pressure, estimated at no less than 300 kPa. This places extremely high demands on the access doors to the wind tunnel: the door body must withstand high pressure without deformation, the sealing structure must withstand high pressure without leakage, and the surface of the door (on the inside of the wind tunnel), consisting of the door panel, frame, and closing mechanism, must be smooth and flat.

[0003] Similar existing technical solutions include:

[0004] 1. Industrial and civil grade steel airtight doors (GB / T-7106-2019);

[0005] 2. Z-type marine weatherproof single-leaf steel door for ships and marine engineering (GB / T-3477-2023);

[0006] 3. Manually hinged pressure-resistant watertight doors for ships and marine engineering (GB / T-33572-2017);

[0007] 4. Waterproof and airtight doors for mines.

[0008] However, the inner surfaces (including door panels, door frames, and walls) of the above technical solutions cannot be made completely flat (the height difference between the door panels, door frames, and walls, including all accessories, is ≤3mm when the door is closed). Even products that can achieve a relatively flat surface cannot meet the wind pressure strength of 300kPa. Utility Model Content

[0009] The technical problem to be solved by this utility model is that the inner surface (including door panel, door frame and wall) of existing airtight doors cannot be made completely flat (the height difference between the door panel, door frame and wall including all accessories in the closed state is ≤3mm). Even if a product can make the surface relatively flat, the structural strength cannot meet the wind pressure strength of 300kPa.

[0010] To solve the above problems, this utility model provides a pure planar inward-opening cantilever hinge high-pressure airtight door, including a door panel, a locking structure and a steering wheel. The door panel is fixedly connected to the door frame by a high-strength sealing strip. Several locking structures are evenly distributed on one side of the door panel. The other side of the door panel is fixedly connected to the wall by a cantilever hinge. The steering wheel is rotatably connected to the hinge on the other side of the door panel.

[0011] Furthermore, a cover is fixedly connected to one side of the door panel.

[0012] Furthermore: the other side surface of the door panel is smooth, and after the door panel is closed, the height difference between the door panel and the door frame surface is no more than 3mm, and the gap between the door panel and the door frame is no more than 3mm.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] This invention features a high-strength door panel structure and a smooth inner surface, making it suitable for applications requiring high inner wall flatness, such as high-pressure high-speed wind tunnels and high-flow-rate liquid pipelines. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This utility model relates to the structure of a pure planar inward-opening cantilever hinged high-pressure airtight door. Figure 1 .

[0017] Figure 2 This utility model relates to the structure of a pure planar inward-opening cantilever hinged high-pressure airtight door. Figure 2 .

[0018] Figure 3 This is a cross-section of a pure planar inward-opening cantilever hinged high-pressure airtight door according to this utility model. Figure 1 .

[0019] Figure 4 This is a cross-section of a pure planar inward-opening cantilever hinged high-pressure airtight door according to this utility model. Figure 2 .

[0020] In the attached image:

[0021] 1. Door panel; 2. Locking mechanism; 3. Hinges; 4. Steering wheel; 5. High-strength sealing strips. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Combined with appendix Figure 1-4This utility model provides a pure planar inward-opening cantilever hinge high-pressure airtight door, including a door panel, a locking structure, and a steering wheel. The door panel is fixedly connected to the door frame by a high-strength sealing strip to ensure the sealing between the door frame and the door panel under pressure. The door frame is welded and fixed to the pre-embedded steel structure of the wall, and the door frame structure can withstand the pressure of the entire door panel. Several locking structures are evenly distributed on one side of the door panel. Both the locking mechanism and the door panel can withstand high-strength pressure. The other side of the door panel is fixedly connected to the wall by a cantilever hinge. The two ends of the hinge are rotatably connected to the hinge seats on the wall and the door panel. The hinge can rotate smoothly around the pivot on the wall side and also rotate smoothly around the pivot on the door panel side. Through the cooperation of the two pivots and the cantilever connecting rod, the door panel can be opened and closed smoothly without jamming. The steering wheel is rotatably connected to the hinge on the other side of the door panel. When the door is closed, the operator can rotate the steering wheel handle to unlock the pressing device, push the airtight door inward to move it out of the door frame range, and then flip it to the side to open.

[0024] One side of the door panel is fixedly connected to a cover, which can protect the linkage mechanism inside the door and also serve an aesthetic decoration purpose. The other side of the door panel has a smooth surface, and the height difference between the door panel and the door frame surface is no more than 3mm after the door panel is closed, and the gap between the door panel and the door frame is no more than 3mm. The smooth surface of the door panel can meet the requirements of high-pressure high-speed wind tunnels, high-flow liquid pipelines, and other scenarios with high requirements for the flatness of the inner wall.

[0025] The working principle of this application is as follows:

[0026] This patented door panel is fixedly connected to the door frame by a high-strength sealing strip. Through the cooperation of two pivots and cantilever linkages, it can ensure that the door panel opens and closes smoothly without jamming. The steering wheel is connected to the hinge on the other side of the door panel. When the door is closed, the operator can rotate the steering wheel handle to unlock the clamping device, and then push the airtight door inward to disengage it from the door frame, allowing it to flip open to the side. This patented door panel features high structural strength and a smooth inner surface, which can meet the requirements of high-pressure high-speed wind tunnels, high-flow liquid pipelines, and other scenarios with high requirements for the flatness of the inner wall.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A pure in-plane opening cantilever hinge high pressure gas tight door, characterized in that: Including door board, locking structure and steering wheel, the door board is fixedly connected to the door frame through high-strength sealing rubber strip, a plurality of locking structures are evenly distributed on one side of the door board, the other side of the door board is fixedly connected with the wall body through a cantilever type hinge, and the steering wheel is rotatably connected to the other side of the door board.

2. A pure in-plane opening cantilever hinge high pressure gas-tight door according to claim 1, characterized in that: The door board is fixedly connected with a cover on one side.

3. A pure in-plane opening cantilever hinge high pressure gas-tight door according to claim 2, characterized in that: The other side surface of the door board is smooth, the height difference between the door board and the door frame surface after the door board is closed is not greater than 3mm, and the gap between the door board and the door frame is not greater than 3mm.

Images