Fireproof heat insulation core structure of smoke prevention and exhaust air pipe
By adopting a refractory and heat-insulated core structure in the smoke-proof and exhaust duct, wrapping the self-tapping screw position, the problem of unstable screw structure at high temperature is solved, and the service life and overall stability of the smoke-proof and exhaust duct are improved.
Patent Information
- Application Number
- CN202421963041.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The screw structure used for connecting the existing smoke-proof and exhaust ducts in high-temperature environments is not stable enough, resulting in the problem of damage to the smoke-proof and exhaust ducts.
The refractory and thermal insulation core structure is adopted, including refractory plates, connecting steel frames, refractory partitions and right-angle plates. By combining self-tapping screws and fire-proof thermal insulation glue, a temperature protection structure is formed that wraps the position of the self-tapping screw.
It effectively protects the structural strength of the self-tapping screw at high temperatures, improves the service life of the smoke-proof and exhaust duct, and enhances the stability of the overall structure.
Smart Images
Figure CN222798496U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of smoke exhaust ducts, in particular to a fire-resistant heat-insulating core structure of a smoke exhaust duct. Background Art
[0002] Smoke exhaust ducts are pipes used to exhaust smoke when a fire occurs. They are widely used in office buildings, hotels, restaurants, theaters, shopping malls, hospitals, underground parking lots and other places where smoke exhaust is required.
[0003] The structure of the existing smoke exhaust duct is generally as follows: eight right-angle steel frames, two of which are overlapped, and a fire-resistant board is sandwiched between the two right-angle steel frames, and then the right-angle steel frames and the fire-resistant board are fixed in position by self-tapping screws;
[0004] The fire-resistant board can withstand a higher temperature and can protect the high-temperature smoke inside the smoke exhaust duct. However, the self-tapping screw can withstand a lower temperature than the fire-resistant board. Therefore, the damage of the smoke exhaust duct in the prior art, excluding external factors, is mainly caused by the long-term exposure of the connecting screws to a high temperature environment, resulting in a decrease in the connection strength, which in turn causes the smoke exhaust duct structure to be unstable and eventually damaged. Utility Model Content
[0005] The technical problem to be solved by the utility model is that the existing smoke exhaust fan fails to effectively protect the screws used for internal connection, resulting in the problem that the connection structure is not stable enough and is eventually damaged.
[0006] In order to solve the above problems, the technical solution adopted by the utility model is a fire-resistant and heat-insulating core structure of a smoke exhaust duct, including four fire-resistant boards, and connecting steel frames are provided at adjacent positions of the four fire-resistant boards. The connecting steel frames include a base frame, and two limiting steel plates are fixed on adjacent sides of the base frame. Two clamping plates are fixed on one side of a limiting steel plate, and the two sides of the fire-resistant board are clamped between the two limiting steel plates and are fastened by self-tapping screws. A fire-resistant partition is provided on the inner side of the fire-resistant board, and a right-angle plate is fixed on one side of the fire-resistant partition.
[0007] As a further solution of the utility model: a protruding structure is fixed on one side of the fire-resistant board.
[0008] As a further solution of the utility model: one side of the right-angle plate is clamped in the two clamping plates, and the other side of the right-angle plate is clamped on one side of the raised structure of the fire-resistant board to protect the position of the self-tapping screws.
[0009] As a further solution of the utility model: the area of the fireproof partition is equal to the area of the raised structure on one side of the fireproof board, so as to prevent the generation of unnecessary gaps.
[0010] As a further solution of the utility model: the self-tapping screws are located on the inner side of the right-angle plate, and the right-angle plate can provide a certain temperature protection for the self-tapping screws.
[0011] As a further solution of the utility model: the gaps between the fire-resistant board, the connecting steel frame, the fire-resistant partition board and the right-angle board are filled and sealed by fire-proof and heat-insulating adhesive to fix the overall structure.
[0012] Compared with the prior art, the utility model has the following advantages: the patent adds a fire-resistant partition and a right-angle plate structure, and adds a clamping plate in the structure connecting the steel frame for clamping the right-angle plate. The right-angle plate can wrap and protect the position of the automatic screw, preventing the self-tapping screw from having structural strength problems due to high temperature, thereby improving the service life of the smoke exhaust duct. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0014] Figure 1 The utility model is a three-dimensional overall structure in the fire-resistant and heat-insulating core structure of a smoke exhaust duct Figure 1 .
[0015] Figure 2 The utility model is a three-dimensional overall structure in the fire-resistant and heat-insulating core structure of a smoke exhaust duct Figure 2 .
[0016] Figure 3 The utility model is a connection diagram of a fire-resistant board, a connecting steel frame, a fire-resistant partition board and a right-angle board in a fire-resistant and heat-insulating core structure of a smoke exhaust duct.
[0017] Figure 4 It is a three-dimensional diagram of a connecting steel frame in a fire-resistant and heat-insulating core structure of a smoke exhaust duct according to the utility model.
[0018] In the attached figure:
[0019] 1. Fire-resistant board; 2. Connecting steel frame; 3. Self-tapping screws; 4. Fire-resistant partition; 5. Right-angle plate; 1.1. Raised structure; 2.1. Base frame; 2.2. Limiting steel plate; 2.3. Cardboard. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] The utility model provides a technical solution to solve the existing problems raised in the background technology.
[0022] Combined with Figure 1-3 It can be known that the equipment includes four fire-resistant boards 1, and the four fire-resistant boards 1 are each provided with a connecting steel frame 2 at adjacent locations. The two sides of the fire-resistant board 1 are clamped between the two limiting steel plates 2.2 and are fastened together by self-tapping screws 3. A fire-resistant partition 4 is provided on the inner side of the fire-resistant board 1, and a right-angle plate 5 is fixed on one side of the fire-resistant partition 4. A raised structure 1.1 is fixed on one side of the fire-resistant board 1. One side of the right-angle plate 5 is clamped in two clamping plates 2.3, and the other side of the right-angle plate 5 is clamped on one side of the raised structure 1.1 of the fire-resistant board 1, which is used to protect the position of the self-tapping screw 3. The area of the fire-resistant partition 4 is equal to the area of the raised structure 1.1 on one side of the fire-resistant board 1 to prevent the generation of excess gaps; the self-tapping screw 3 is located on the inner side of the right-angle plate 5, and the right-angle plate 5 can provide certain temperature protection for the self-tapping screw 3; the gaps between the fire-resistant board 1, the connecting steel frame 2, the fire-resistant partition 4, and the right-angle plate 5 are filled and sealed by fireproof and heat-insulating glue to fix the overall structure.
[0023] Combined with Figure 4 It can be seen that the connecting steel frame 2 includes a base frame 2.1, two adjacent sides of the base frame 2.1 are fixed with two limiting steel plates 2.2, and one side of a limiting steel plate 2.2 is fixed with two clamping plates 2.3.
[0024] The working principle of the present application is as follows: when installing the smoke exhaust duct, firstly, the fireproof board 1 is clamped between the two limiting steel plates 2.2 in the four connecting steel frames 2, and then the position is fixed by a number of self-tapping screws 3, and then the fireproof partition 4 is placed on the inner side of the fireproof board 1, and at the same time, one side of the right-angle plate 5 can be clamped in the two clamping plates 2.3, and then the gap is filled and sealed with fireproof and heat-insulating glue.
[0025] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A fireproof and heat-insulating core structure of a smoke exhaust duct, comprising four fireproof boards (1), each of which is provided with a connecting steel frame (2) at adjacent locations of the four fireproof boards (1), characterized in that: The connecting steel frame (2) comprises a base frame (2.1), two limiting steel plates (2.2) are fixed on adjacent two sides of the base frame (2.1), two clamping plates (2.3) are fixed on one side of a limiting steel plate (2.2), the two sides of the fireproof plate (1) are clamped between the two limiting steel plates (2.2) and are fastened by self-tapping screws (3), a fireproof partition (4) is provided on the inner side of the fireproof plate (1), and a right-angle plate (5) is fixed on one side of the fireproof partition (4).
2. The fire-resistant and heat-insulating core structure of the smoke exhaust duct according to claim 1, characterized in that: A protruding structure (1.1) is fixed on one side of the fire-resistant board (1).
3. The fire-resistant and heat-insulating core structure of the smoke exhaust duct according to claim 2 is characterized in that: One side of the right-angle plate (5) is clamped in the two clamping plates (2.3), and the other side of the right-angle plate (5) is clamped on one side of the protruding structure (1.1) of the fireproof plate (1).
4. The fire-resistant and heat-insulating core structure of the smoke exhaust duct according to claim 3 is characterized in that: The area of the fireproof partition (4) is equal to the area of the raised structure (1.1) on one side of the fireproof board (1).
5. The fire-resistant and heat-insulating core structure of the smoke exhaust duct according to claim 2, characterized in that: The self-tapping screw (3) is located on the inner side of the right-angle plate (5).
6. The fire-resistant and heat-insulating core structure of the smoke exhaust duct according to claim 2, characterized in that: The gaps between the fireproof board (1), the connecting steel frame (2), the fireproof partition board (4) and the right-angle board (5) are filled and sealed by fireproof and heat-insulating glue.