Telescopic connecting device for smoke exhaust air pipe

Abstract

The utility model discloses a telescopic connecting device for a smoke exhaust duct, which relates to the technical field of smoke exhaust duct plugging, and comprises a smoke-blocking vertical wall, a smoke exhaust duct, an outer sleeve, a first flange, a second flange, a third flange, a fourth flange, a fourth flange, a fifth flange, a sixth flange, a fifth flange and a sixth flange, the smoke-blocking vertical wall is provided with a mounting hole, and the smoke-blocking vertical wall is provided with a mounting hole. The telescopic expansion joint is arranged in the middle of the outer sleeve, the inner sleeves are arranged on the two sides of the outer sleeve, the diameters of the two ends of each inner sleeve are large, the diameters of the two ends of each inner sleeve are small, the large-diameter ends of the inner sleeves are provided with the second flanges, the second flanges are connected with the first flanges, the small-diameter ends of the inner sleeves are provided with the third flanges, the third flanges are connected with the fourth flanges, and the sealing strips are arranged between the third flanges and the fourth flanges. And the sealing strip is clamped with the smoke exhaust air pipe. The device can adapt to smoke exhaust air pipes of different sizes, and the installation process is simplified; the annular fireproof blocking edge and the sealing ring provide a better fireproof blocking effect, and the safety is improved; the sealing gasket between the inner sleeve and the outer sleeve ensures good sealing performance, and smoke leakage is prevented.

Description

Technical Field

[0001] This utility model relates to the field of smoke exhaust duct sealing technology, specifically a retractable connecting device for smoke exhaust ducts. Background Technology

[0002] Fire protection design is a crucial aspect of construction projects. A well-designed and compliant fire protection system not only affects the investment efficiency, quality, and safety of construction projects and the safety of people's lives and property, but also has a significant impact on urban construction, renewal, and development.

[0003] Pipes in smoke extraction, heating, ventilation, and air conditioning systems, as well as other pipes within buildings, should have their openings where they pass through fire-resistant partitions, floors, and firewalls sealed with fire-resistant sealing materials. Smoke curtains should be installed in areas requiring smoke extraction systems to delineate corresponding smoke control zones, preventing the spread of fire across zones and causing loss of life and property. Smoke curtains are commonly used in large shopping malls and supermarkets and are essential smoke control equipment in high-traffic areas as stipulated by building fire codes. Therefore, the choice of sealing method for ductwork passing through smoke curtains is particularly important. Currently, fire-retardant coatings are commonly used for sealing, but when these coatings age, break, or become excessively damaged, replacement is necessary, which is cumbersome and yields limited performance recovery. Therefore, a retractable connection device for smoke extraction ducts is urgently needed to solve these problems. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a retractable connecting device for smoke exhaust ducts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A retractable connecting device for a smoke exhaust duct includes a smoke curtain and a smoke exhaust duct. The smoke curtain has mounting holes. The device also includes an outer sleeve located within the mounting holes. Flanges at both ends of the outer sleeve are connected to the smoke curtain. An expansion joint is located in the middle of the outer sleeve to accommodate smoke curtains of different thicknesses. Inner sleeves are located on both sides of the outer sleeve and communicate with their interiors. The inner sleeves have different diameters at their ends. A flange (2) is located at the larger diameter end of the inner sleeve and connects to flange (1). A flange (3) is located at the smaller diameter end of the inner sleeve and connects to flange (4). A sealing strip is located between flanges (3 and 4) and engages with the smoke exhaust duct. The smoke exhaust duct communicates with the interior of the inner sleeves.

[0007] As a further embodiment of this utility model: an annular fireproof baffle is provided between the flange and the smoke curtain, and a sealing ring is provided on the annular fireproof baffle.

[0008] As a further aspect of this invention, the sealing strip is made of shape memory alloy.

[0009] As a further embodiment of this utility model, both flange two and flange three are provided with sealing gaskets.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The extensibility of the outer sleeve and the adjustable diameter of the sealing strip allow the device to quickly adapt to smoke exhaust ducts of different sizes, simplifying the installation process. The design of the annular fireproof baffle and sealing ring provides better fireproof sealing effect and improves safety. The sealing gasket between the inner and outer sleeves ensures good sealing performance and prevents smoke leakage. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of a retractable connecting device for smoke exhaust ducts in an embodiment of this utility model.

[0013] Figure 2 This is a schematic diagram of the outer sleeve in an embodiment of the present invention.

[0014] Figure 3 This is a schematic diagram of the inner sleeve in an embodiment of the present invention.

[0015] Figure 4 This is a partial structural schematic diagram of a retractable connecting device for smoke exhaust ducts in an embodiment of this utility model.

[0016] In the diagram: 1. Smoke curtain; 2. Expansion joint; 3. Flange 1; 4. Annular fireproof baffle; 5. Inner sleeve; 6. Flange 2; 7. Flange 3; 8. Sealing strip; 9. Flange 4; 10. Smoke exhaust duct; 11. Outer sleeve. Detailed Implementation

[0017] 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.

[0018] In this embodiment of the utility model, please refer to Figures 1 to 4A retractable connecting device for a smoke exhaust duct includes a smoke curtain 1 and a smoke exhaust duct 10. The smoke curtain 1 has an installation hole. The device also includes an outer sleeve 11 located within the installation hole. Flanges 3 are provided at both ends of the outer sleeve 11 and are connected to the smoke curtain 1. An expansion joint 2 is provided in the middle of the outer sleeve 11 to accommodate smoke curtains 1 of different thicknesses. Inner sleeves 5 are provided on both sides of the outer sleeve 11 and communicate with their interiors. The inner sleeves 5 have different diameters at their ends. A flange 6 is provided at the larger diameter end of the inner sleeve 5 and is connected to flange 3. A flange 7 is provided at the smaller diameter end of the inner sleeve 5 and is connected to flange 4. A sealing strip 8 is provided between flange 7 and flange 4, and the sealing strip 8 is engaged with the smoke exhaust duct 10. The smoke exhaust duct 10 communicates with the interior of the inner sleeves 5.

[0019] An annular fireproof baffle 4 is provided between the flange 3 and the smoke curtain 1, and a sealing ring is provided on the annular fireproof baffle 4;

[0020] The sealing strip 8 is made of shape memory alloy;

[0021] Both flange 2 (6) and flange 3 (7) are equipped with sealing gaskets.

[0022] Select a suitable inner sleeve 5 according to the size of the smoke exhaust duct 10, and a suitable outer sleeve 11 according to the thickness of the smoke curtain 1. Fix both ends of the outer sleeve 11 to the two sides of the smoke curtain 1 through flange 1 3. The expansion joint 2 can adapt to smoke curtains 1 of different thicknesses. The sealing performance is improved by the set annular fireproof baffle 4 and sealing ring, which can effectively seal the gaps. Connect the outer sleeve 11 and the inner sleeve 5 together through flange 2 6, and the two are internally connected. Fix the sealing strip 8 between flange 3 7 and flange 4 9. According to the special properties of shape memory alloy, it is processed at a certain temperature (higher than the working temperature during fire) to expand the inner diameter of the sealing strip 8. Then insert the smoke exhaust duct 10 into the narrower end of the inner sleeve 5, and then restore it to the transformation temperature so that it automatically shrinks and tightens, thereby fixing the smoke exhaust duct 10. When the sealing strip 8 needs to be replaced, simply remove flange 4 9.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A telescopic connection device for a smoke exhaust duct, comprising a smoke blocking vertical wall and a smoke exhaust duct, wherein a mounting hole is formed in the smoke blocking vertical wall, characterized in that, Also include: The outer sleeve is located in the mounting hole, the outer sleeve both ends are equipped with flange one, the flange one is connected with the smoke baffle, the outer sleeve middle part is equipped with telescopic expansion joint, in order to adapt to different thickness of smoke baffle, the outer sleeve both sides are equipped with inner sleeve, and with its inside communication, the inner sleeve both ends are equipped with flange two, the flange two is connected with flange one, the inner sleeve smaller diameter one end is equipped with flange three, the flange three is connected with flange four, the flange three and flange four between is equipped with sealing strip, the sealing strip is connected with the smoke exhaust duct, the smoke exhaust duct is connected with the inner sleeve inside.

2. A telescopic connection device for a flue according to claim 1, characterised in that The flange one is equipped with annular fireproof fender between the smoke baffle, the annular fireproof fender is equipped with sealing ring.

3. A telescopic connection device for a smoke evacuation air hose according to claim 1, characterized in that The sealing strip is prepared from memory alloy.

4. A telescoping connection device for a flue according to claim 1, wherein The flange two and flange three are all equipped with sealing pad.

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