High temperature resistant connecting device for fire-proof air duct

Abstract

This utility model relates to the field of fireproof air duct technology and proposes a high-temperature resistant connection device for fireproof air ducts. The design includes a connection assembly comprising a connection sleeve; air duct components for duct connection are mounted on both sides inside the connection sleeve; a flow chamber inside the connection sleeve allows cooling water to flow and cools the connection point of the air duct components; a cover plate is fastened to the outside of the self-locking fastening component on the connection sleeve; and a self-locking fastening component is located outside the connection sleeve to complete the assembly and locking between the air duct components and the connection sleeve. This design solves the problems of insufficient connection reliability and lack of active cooling mechanism in existing technologies under high-temperature environments through self-locking mechanical fastening and active water cooling circulation.

Description

Technical Field

[0001] This utility model relates to the field of fireproof air duct technology, specifically to a high-temperature resistant connection device for fireproof air ducts. Background Technology

[0002] Fire-resistant ducts are core components of building fire ventilation systems. Made from non-combustible materials such as galvanized steel sheets, inorganic fiberglass, or composite insulation materials, they maintain structural integrity during a fire, effectively preventing the spread of fire and smoke. For example, fire-resistant ducts made of 8mm thick fiber-reinforced silicate board can withstand fire for up to 120 minutes, meeting the smoke extraction needs of high-rise buildings, subways, and other similar locations. Their applications include mechanical pressurized air supply systems, kitchen exhaust ducts, and ventilation projects that traverse fire compartments. However, ensuring the stability of the connection between fire-resistant ducts and connectors, as well as the high-temperature resistance of the connectors, are currently pressing issues that need to be addressed.

[0003] A search revealed that CN221800926U discloses a fireproof duct connection assembly, comprising a main body and an auxiliary connection mechanism. The auxiliary connection mechanism is located above the main body. The main body includes a fireproof duct body, a connecting plate, a connecting pipe body, and a disassembly / assembly assembly. The connecting plate is fixedly installed at the front end of the fireproof duct body, and the connecting pipe body is movably installed at the front end of the connecting plate. The disassembly / assembly assembly is located on the left and right sides of the connecting pipe body. The disassembly / assembly assembly includes an adjustment button and a first mounting groove. The adjustment button is movably installed at both ends of the fireproof duct body. This fireproof duct connection assembly, through the installation of the main body, improves the connection and disassembly capabilities of this utility model. In actual use, the fireproof duct body can be quickly connected according to the needs of use without the need for multiple people, and it is convenient for disassembly and maintenance operations, thus improving the ease of use of this fireproof duct connection assembly.

[0004] The problem with the aforementioned fireproof duct connection assembly is that:

[0005] 1. Insufficient connection reliability under high temperature environment: The connection component relies on mechanical buckles (adjustment button and mounting slot) for locking. Under the high temperature of a fire, the metal is prone to expansion and deformation, which may cause the buckles to loosen or fail, posing a risk of smoke leakage.

[0006] Second, the lack of an active cooling mechanism: the joints lack high-temperature resistant design and rely solely on the fire resistance of the duct body material. High-temperature heat conduction to the joints can easily cause deformation, affecting sealing and structural integrity. Utility Model Content

[0007] This utility model proposes a high-temperature resistant connection device for fireproof air ducts, which solves the problems of insufficient connection reliability and lack of active cooling mechanism in the prior art under high temperature environment.

[0008] The technical solution of this utility model is as follows: a high-temperature resistant connection device for fireproof air ducts, comprising a connection component, wherein the connection component includes a connection sleeve;

[0009] Duct assemblies for air duct connection are installed on both sides inside the connecting sleeve.

[0010] A flow chamber is provided inside the connecting sleeve to allow cooling water to flow and to cool the connection of the air duct assembly.

[0011] The cover plate that is fastened to the outside of the fastening self-locking assembly of the connecting sleeve;

[0012] A self-locking fastening assembly is installed on the outside of the connecting sleeve to complete the assembly and locking between the duct assembly and the connecting sleeve.

[0013] Preferably, the connection component further includes:

[0014] An inflow pipe fixedly connected to the top of the connecting sleeve;

[0015] The inflow pipe is connected to the flow cavity.

[0016] Preferably, the connection component further includes:

[0017] A pump body that is fixedly installed on the outside of the inflow pipe.

[0018] Preferably, the connection component further includes:

[0019] An outflow pipe fixedly connected to the bottom of the connecting sleeve;

[0020] The outflow tube is connected to the flow cavity.

[0021] Preferably, the self-locking fastening assembly includes:

[0022] The main rotating rod is rotatably connected to the outside of the connecting sleeve;

[0023] A screw sleeve that is fixedly connected to the outer end of the main rotating rod.

[0024] Preferably, the self-locking fastening assembly further includes:

[0025] The worm gear is fixedly connected to the middle of the main rotating rod.

[0026] Preferably, the self-locking fastening assembly further includes:

[0027] A main shaft symmetrically rotates and is connected to the outside of the connecting sleeve;

[0028] A worm gear fixedly connected to the end of a set of main rotating shafts;

[0029] The worm gear is in contact with the worm and is connected in a meshing rotational manner.

[0030] Preferably, the self-locking fastening assembly further includes:

[0031] A geared disc is fixedly connected to the outside of each of the main rotating shafts;

[0032] The two sets of toothed discs are in contact and are meshing and rotating.

[0033] Preferably, the self-locking fastening assembly further includes:

[0034] A slide rod fixedly connected to the lower outer side of each of the gear discs;

[0035] An arc-shaped buckle plate is fixedly connected to the end of the slide rod.

[0036] Preferably, the duct assembly includes:

[0037] The fireproof air duct body is fitted inside the connecting sleeve;

[0038] A trough fixedly connected to the outside of the fireproof air duct body;

[0039] The inner shape of the trough matches the arc-shaped buckle plate.

[0040] The beneficial effects of this utility model are as follows:

[0041] I. Integrated water-cooled circulation system → Solves high-temperature heat conduction problems

[0042] Improved design: A flow chamber is set inside the connecting sleeve. Cooling water is driven by the pump body to enter from the inlet pipe, and after passing through the flow chamber to cover the connecting area, it is discharged from the outlet pipe, forming a continuous heat exchange.

[0043] Advantages: Actively reduces the temperature at the connection point, prevents metal deformation or seal failure caused by high temperature, and significantly improves stability in fire environments.

[0044] II. Worm Gear Self-Locking Connection → Enhanced Locking Reliability in High-Temperature Environments

[0045] Improved design: The self-locking fastening assembly uses a worm gear to drive a worm wheel. Utilizing the reverse self-locking characteristics of the worm gear and worm wheel, it cannot be loosened in the reverse direction after locking. The worm wheel drives two sets of meshing gear discs, causing the arc-shaped buckle plate at the end of the slide rod to move synchronously in the opposite direction and fasten into the slot of the duct assembly.

[0046] Advantages: The locking structure remains secure even under high temperature and vibration, and both sides can be locked / released simultaneously by rotating the screw sleeve with one hand, improving operational efficiency.

[0047] III. Modular Sealing Structure → Optimized Installation and Airtightness

[0048] Improved design: The duct assembly achieves physical locking through precise matching between the slot and the arc-shaped buckle plate; a cover plate is added to the outside of the connecting sleeve to cover the self-locking buckle assembly and prevent external impact or debris interference.

[0049] Advantages: After locking, it forms a full circumferential seal, preventing smoke leakage; the cover plate further protects the transmission components and extends their service life. Attached Figure Description

[0050] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0051] Figure 1 This is a schematic diagram of the overall device of this utility model. Figure 1 ;

[0052] Figure 2 This is a schematic diagram of the connection component of this utility model;

[0053] Figure 3 This is a schematic diagram of the overall device of this utility model. Figure 2 ;

[0054] Figure 4 This is a schematic diagram of the duct assembly of this utility model;

[0055] Figure 5 for Figure 4 Enlarged view of region A;

[0056] In the diagram: 1. Connecting assembly; 11. Connecting sleeve; 111. Flow chamber; 12. Inlet pipe; 121. Pump body; 13. Outlet pipe; 14. Cover plate; 2. Duct assembly; 21. Fireproof duct body; 211. Tank; 3. Self-locking fastening assembly; 31. Main rotating rod; 311. Worm gear; 312. Tightening sleeve; 32. Main rotating shaft; 321. Worm wheel; 322. Gear plate; 33. Slide rod; 331. Arc-shaped buckle plate. Detailed Implementation

[0057] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0058] For examples, please refer to Figures 1-5 This utility model provides a technical solution: a high-temperature resistant connection device for fireproof air ducts, including a connection component 1, the connection component 1 including a connection sleeve 11;

[0059] Duct assemblies 2 for connecting air ducts are installed on both sides inside the connecting sleeve 11;

[0060] A flow chamber 111 is provided inside the connecting sleeve 11 to allow cooling water to flow and to cool the connection of the air duct assembly 2.

[0061] The cover plate 14 is fastened to the outside of the self-locking assembly 3 on the connecting sleeve 11;

[0062] A self-locking fastening assembly 3 is installed on the outside of the connecting sleeve 11 to complete the assembly and locking between the duct assembly 2 and the connecting sleeve 11;

[0063] This design addresses the issues of insufficient connection reliability and lack of active cooling mechanism in existing technologies under high-temperature environments through self-locking mechanical fastening and active water-cooling circulation.

[0064] Connection component 1 also includes:

[0065] The inflow pipe 12 is fixedly connected to the top of the connecting sleeve 11;

[0066] Inlet pipe 12 is connected to flow cavity 111;

[0067] Connection component 1 also includes:

[0068] Pump body 121 is fixedly installed on the outside of inflow pipe 12;

[0069] Connection component 1 also includes:

[0070] The outflow pipe 13 is fixedly connected to the bottom of the connecting sleeve 11;

[0071] The outflow tube 13 is connected to the flow cavity 111;

[0072] The self-locking fastening assembly 3 includes:

[0073] The main rotating rod 31 is rotatably connected to the outside of the connecting sleeve 11;

[0074] Screw sleeve 312 is fixedly connected to the outer end of the main rotating rod 31;

[0075] The self-locking fastening assembly 3 also includes:

[0076] The worm gear 311 is fixedly connected to the middle part of the main rotating rod 31;

[0077] The self-locking fastening assembly 3 also includes:

[0078] The main rotating shaft 32 is symmetrically rotated and connected to the outside of the connecting sleeve 11;

[0079] A worm gear 321 is fixedly connected to the end of a set of main rotating shafts 32;

[0080] The worm gear 321 is in contact with the worm 311 and is in a meshing rotational connection;

[0081] The self-locking fastening assembly 3 also includes:

[0082] Gear discs 322 are fixedly connected to the outside of each main rotating shaft 32;

[0083] The two sets of toothed discs 322 are in contact and are meshing and rotating;

[0084] The self-locking fastening assembly 3 also includes:

[0085] A slide rod 33 is fixedly connected to the lower outer side of each toothed disc 322;

[0086] An arc-shaped buckle plate 331 is fixedly connected to the end of the slide rod 33;

[0087] Duct assembly 2 includes:

[0088] Fireproof air duct body 21 is fitted inside the connecting sleeve 11;

[0089] The slot 211 is fixedly connected to the outside of the fireproof air duct body 21;

[0090] The inner shape of the trough 211 matches the arc-shaped buckle 331;

[0091] The two sets of fireproof air duct bodies 21 are respectively fitted into the openings on both sides of the connecting sleeve 11 to complete the pre-positioning work between the fireproof air duct body 21 and the connecting sleeve 11. At this time, the two sets of fireproof air duct bodies 21 are connected through the connecting sleeve 11.

[0092] Then, the screw sleeve 312 can be held and the main rotating rod 31 and worm gear 311 can be rotated on the outside of the connecting sleeve 11. At this time, under the meshing action of worm gear 311 and worm wheel 321, the main rotating shaft 32 located inside the worm wheel 321 starts to rotate synchronously, and the gear plate 322 located outside the main rotating shaft 32 will drive another set of gear plates 322 to mesh synchronously and rotate in opposite directions. At this time, the slide rod 33 fixed on the lower part of the outer side of the gear plate 322 will drive the arc-shaped buckle plate 331 to rotate on the outside of the connecting sleeve 11 until the arc-shaped buckle plate 331 is inserted into the slot 211. The above steps can complete the quick locking installation between the connecting sleeve 11 and the fireproof air duct body 21. The meshing self-locking effect between worm gear 311 and worm wheel 321 also effectively prevents the arc-shaped buckle plate 331 from loosening between the slots 211.

[0093] Specifically, the inlet pipe 12 and the outlet pipe 13 are connected to the external cooling water tank respectively. By starting the pump body 121, the cooling water can pass through the inlet pipe 12 and the flow chamber 111 in sequence and be discharged from the outlet pipe 13. This design allows the cooling water to circulate in the flow chamber 111, thereby driving the heat in the contact area between the connecting sleeve 11 and the inlet pipe 12, so as to avoid local high temperature in the connecting sleeve 11.

[0094] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high temperature resistant connection device for fire dampers ducts comprising a connection assembly (1), characterized in that: The connecting component (1) includes a connecting sleeve (11); Duct assemblies (2) for air duct connection are installed on both sides inside the connecting sleeve (11). A flow chamber (111) is provided in the connecting sleeve (11) to allow cooling water to flow and to cool the connection of the air duct assembly (2). The cover plate (14) is fastened to the outside of the self-locking assembly (3) of the connecting sleeve (11). A self-locking fastening assembly (3) is provided on the outside of the connecting sleeve (11) to enable the assembly and locking between the duct assembly (2) and the connecting sleeve (11).

2. A high temperature resistant connection device for fire resistant air ducts according to claim 1, characterized in that, The connection component (1) further includes: The inflow pipe (12) is fixedly connected to the top of the connecting sleeve (11); The inflow pipe (12) is connected to the flow cavity (111).

3. A high temperature resistant connection device for a fire resistant duct according to claim 2, wherein The connection component (1) further includes: A pump body (121) is fixedly installed on the outside of the inflow pipe (12).

4. A fire dammed wind pipe high temperature resistant connecting device according to claim 1, characterized in that, The connection component (1) further includes: The outflow pipe (13) is fixedly connected to the bottom of the connecting sleeve (11); The outflow tube (13) is connected to the flow cavity (111).

5. A fire dammed wind pipe high temperature resistant connecting device according to claim 1, characterized in that, The self-locking fastening assembly (3) includes: The main rotating rod (31) is rotatably connected to the outside of the connecting sleeve (11); A screw sleeve (312) is fixedly connected to the outer end of the main rotating rod (31).

6. A fire dammed wind pipe high temperature resistant connecting device according to claim 5, characterized in that, The self-locking fastening assembly (3) further includes: The worm gear (311) is fixedly connected to the middle of the main rotating rod (31).

7. A fire dammed wind pipe high temperature resistant connecting device according to claim 6, characterized in that, The self-locking fastening assembly (3) further includes: The main shaft (32) is symmetrically rotated and connected to the outside of the connecting sleeve (11); A worm gear (321) is fixedly connected to the end of a set of main shafts (32); The worm wheel (321) is in contact with the worm (311) and is in a meshing rotational connection.

8. A high temperature resistant connection device for a fire resistant duct according to claim 7, wherein, The self-locking fastening assembly (3) further includes: A gear disk (322) is fixedly connected to the outside of each of the main rotating shafts (32); The two sets of toothed discs (322) are in contact and are meshing and rotating.

9. A high temperature resistant connection device for a fire resistant duct according to claim 8, wherein, The self-locking fastening assembly (3) further includes: A slide rod (33) is fixedly connected to the lower outer side of each of the toothed discs (322); An arc-shaped buckle plate (331) is fixedly connected to the end of the slide rod (33).

10. A high temperature resistant connection device for fire resistant air ducts according to claim 1, characterized in that, The duct assembly (2) includes: Fireproof air duct body (21) fitted inside the connecting sleeve (11); The trough (211) is fixedly connected to the outside of the fireproof air duct body (21); The inner shape of the trough (211) matches the arc-shaped buckle plate (331).

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