A construction plugging structure at a wind pipe joint
By setting up a frame structure at the duct connection point, using bolts and nuts to fix the side plates, holes, and sleeves, and filling with fireproof sealant, the problem of easy deformation of the fireproof sealant at the duct connection point is solved, and the duct is stably installed in the shaft wall and the fireproof sealant is stably sealed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU RUICHUANG CONSTR CO LTD
- Filing Date
- 2025-09-28
- Publication Date
- 2026-07-21
AI Technical Summary
In the existing technology, the fireproof sealant at the connection of the air duct is prone to deformation or displacement due to the vibration of the air duct after long-term use, which affects the sealing effect and leads to unstable installation of the air duct and the well wall.
A frame structure is installed between the duct and the well wall. The side plates, hole blocks and sleeve blocks are fixed by the cooperation of bolt rods and nut blocks. The sleeve blocks and horizontal pipes are connected by horizontal pipes and sleeves. Then, fireproof mud layer is filled to support the frame structure.
It improves the stability of the duct installation in the well wall, enhances the filling and sealing stability of the fireproof sealant, and reduces the possibility of fireproof sealant layer displacement.
Smart Images

Figure CN224533694U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sealing technology for air duct connection wells, and in particular relates to a construction sealing structure for air duct connection wells. Background Technology
[0002] Fire sealing at duct connection points is a crucial part of building construction. It not only affects the building's fire resistance but also directly impacts the safe operation of the building's ventilation system. The main purpose of fire sealing at duct connection points is to prevent the spread of fire through the openings in the ducts and ensure the integrity of the building's fire compartments.
[0003] The duct is fixed to the wall surface using angle steel frames and expansion bolts. Then, fireproof putty is used to fill and seal the space between the duct and the well wall. Since the fireproof putty is in direct contact with the duct and the well wall and lacks its own supporting frame, it may deform or shift due to duct vibration after long-term use, affecting the sealing effect. Therefore, a construction and sealing structure for the duct connection is needed. A frame structure can be added between the duct and the well wall to make the duct installation in the well wall more stable, and the frame supports the filling of the fireproof putty, thereby improving the stability of the fireproof putty filling and sealing. Utility Model Content
[0004] The purpose of this utility model is to provide a construction sealing structure for the connection of air ducts to wells. A skeleton structure is added between the air duct and the well wall, which makes the installation of the air duct in the well wall more stable. The skeleton supports the filling of fireproof sealant, thereby improving the stability of the fireproof sealant filling and sealing, so as to solve the technical problems mentioned in the background art.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A construction sealing structure for a duct connection well includes a horizontal pipe 1 pre-embedded in the well wall; a sleeve is welded to the surface of the horizontal pipe 1; a galvanized duct is provided on the outside of the horizontal pipe 1; multiple sleeve blocks are provided on the surface of the galvanized duct; a bolt rod 1 is installed through two adjacent sleeve blocks; a nut block 1 is threadedly connected to the surface of the bolt rod 1; a side plate is provided on the rear side of the galvanized duct; two symmetrically arranged holes are integrally formed on the surface of the side plate; a bolt rod 2 is provided on the outside of the galvanized duct; a nut block 2 is threadedly connected to the surface of the bolt rod 2; two symmetrically arranged horizontal pipes 2 are welded to the surface of the sleeve; and a fireproof mud layer is filled between the galvanized duct and the well wall.
[0006] Preferably, the second horizontal tube is located between two adjacent sleeve blocks, and the second horizontal tube is a square steel pipe.
[0007] Preferably, two symmetrically arranged rectangular blocks are welded to the surface of the hole block, and the second horizontal tube is attached to the rectangular blocks.
[0008] Preferably, the rear side of the side plate is integrally formed with multiple reinforcing bars.
[0009] Preferably, the fireproof mud layer is an asbestos fiber fireproof mud layer.
[0010] The beneficial effects of this utility model are: 1. This utility model uses the cooperation of bolt rod two and nut block two to fix the side plate, hole block and sleeve block to the surface of the air duct, and connects the sleeve block to the horizontal pipe one through horizontal pipe two and sleeve. The sleeve block is fixed to the horizontal pipe two through the cooperation of bolt rod one and nut block one. Then, fireproof mud layer is filled between the galvanized air duct and the well wall, which can achieve the purpose of adding a skeleton structure between the air duct and the well wall, making the installation of the air duct in the well wall more stable, and the skeleton supports the filling of fireproof mud, thereby improving the stability of fireproof mud filling and sealing. 2. By setting a rectangular block, this utility model limits the movement between the second horizontal tube and the sleeve, improving the stability of the contact between the second horizontal tube and the hole block, thereby improving the overall stability of the structure. 3. By setting up the steel bar, this utility model increases the adhesion surface of the fireproof mud layer, further improving the stability of the fireproof mud layer's position when sealing, and reducing the possibility of the fireproof mud layer shifting or moving. Attached Figure Description
[0011] in: Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model; Figure 2 This is one embodiment of the present utility model. Figure 1 A magnified view of point A in the middle; Figure 3 This is a three-dimensional schematic diagram of a horizontal tube and a rectangular block according to an embodiment of the present invention; Figure 4 This is a three-dimensional disassembly diagram of the horizontal tube and the sleeve in one embodiment of the present invention.
[0012] The attached diagram lists the components represented by each number as follows: 1. Horizontal pipe one, 2. Sleeve, 3. Galvanized air duct, 4. Sleeve block, 5. Bolt rod one, 6. Nut block one, 7. Side plate, 8. Hole block, 9. Bolt rod two, 10. Nut block two, 11. Horizontal pipe two, 12. Rectangular block, 13. Reinforcing bar, 14. Fireproof mud layer. Detailed Implementation
[0013] In the following description, embodiments of the construction and sealing structure for the air duct connection well of this utility model will be described with reference to the accompanying drawings.
[0014] Example 1: Figure 1-4This invention illustrates a construction and sealing structure for a duct connection well, comprising a horizontal pipe 1 pre-embedded in the well wall; a sleeve 2 welded to the surface of the horizontal pipe 1; a galvanized duct 3 disposed on the outer side of the horizontal pipe 1; multiple sleeve blocks 4 disposed on the surface of the galvanized duct 3; a bolt rod 5 passing through adjacent sleeve blocks 4; a nut block 6 threadedly connected to the surface of the bolt rod 5; a side plate 7 disposed on the rear side of the galvanized duct 3; two symmetrically arranged hole blocks 8 integrally formed on the surface of the side plate 7; and a bolt rod 9 disposed on the outer side of the galvanized duct 3. The surface is threaded with a nut block 10. The surface of the sleeve 2 is welded with two symmetrically arranged horizontal pipes 11. The horizontal pipes 11 are located between two adjacent sleeve blocks 4. The horizontal pipes 11 are square steel pipes. The surface of the hole block 8 is welded with two symmetrically arranged rectangular blocks 12. The horizontal pipes 11 and the rectangular blocks 12 fit together. The rectangular blocks 12 limit the movement between the horizontal pipes 11 and the sleeve 2, improving the stability of the contact between the horizontal pipes 11 and the hole block 8, thereby improving the overall stability of the structure. The galvanized air duct 3 and the well wall are filled with a fireproof mud layer 14.
[0015] Example 2: Figure 1-4 This invention illustrates a construction sealing structure for a duct connection well in accordance with an embodiment of the present invention. It includes a horizontal pipe 1 pre-embedded in the well wall; a sleeve 2 is welded to the surface of the horizontal pipe 1; a galvanized duct 3 is disposed on the outer side of the horizontal pipe 1; multiple sleeve blocks 4 are disposed on the surface of the galvanized duct 3; a bolt rod 5 is installed through adjacent sleeve blocks 4; a nut block 6 is threadedly connected to the surface of the bolt rod 5; a side plate 7 is disposed on the rear side of the galvanized duct 3; two symmetrically arranged perforated blocks 8 are integrally formed on the surface of the side plate 7; and a galvanized duct 3 is disposed on the outer side. Bolt rod 2 9 is provided, and nut block 2 10 is threadedly connected to the surface of bolt rod 2 9. Two symmetrically arranged horizontal pipes 2 11 are welded to the surface of sleeve 2. Multiple steel bars 13 are integrally formed on the rear side of side plate 7. The setting of steel bars 13 increases the adhesion surface of fireproof mud layer 14, further improves the stability of its own position when sealing fireproof mud layer 14, and reduces the possibility of fireproof mud layer 14 shifting. Fireproof mud layer 14 is filled between galvanized air duct 3 and well wall. Fireproof mud layer 14 is asbestos fiber fireproof mud layer.
[0016] Working Principle: When using this utility model, the user welds the sleeve 2 to the surface of the horizontal pipe 1, then fixes the galvanized air duct 3 to the wall surface. Next, the side plate 7, hole block 8, and sleeve block 4 are fixed to the air duct surface through the cooperation of bolt rod 2 9 and nut block 2 10. The sleeve block 4 is connected to the horizontal pipe 1 through the horizontal pipe 2 11 and the sleeve 2. The sleeve block 4 is fixed to the horizontal pipe 2 11 through the cooperation of bolt rod 1 5 and nut block 1 6. This allows the horizontal pipe 2 11 to fix the galvanized air duct 3 to the horizontal pipe 1 through the cooperation of sleeve block 4 and sleeve 2, improving the stability of the galvanized air duct 3 in the well wall. Then, the fireproof mud layer 14 is filled between the galvanized air duct 3 and the well wall, so that the fireproof mud layer 14 is supported by the components. This realizes the addition of a skeleton structure between the air duct and the well wall, making the installation of the air duct in the well wall more stable. The skeleton supports the filling of the fireproof mud, thereby improving the stability of the fireproof mud filling and sealing.
[0017] In summary: The construction and sealing structure at the duct connection point involves fixing the side plate 7, hole block 8, and sleeve block 4 to the duct surface using the cooperation of bolt rod 2 9 and nut block 2 10. The sleeve block 4 is connected to the horizontal pipe 1 1 via horizontal pipe 2 11 and sleeve 2. The sleeve block 4 is fixed to the horizontal pipe 11 via the cooperation of bolt rod 1 5 and nut block 1 6. Subsequently, fireproof putty layer 14 is filled between the galvanized duct 3 and the well wall, thus achieving the purpose of adding a skeleton structure between the duct and the well wall. This makes the installation of the duct in the well wall more stable, and the skeleton supports the filling of fireproof putty, thereby improving the stability of the fireproof putty filling and sealing.
Claims
1. A construction sealing structure for a duct connection well, characterized in that, The system includes a horizontal pipe (1) pre-embedded in the well wall: a sleeve (2) is welded to the surface of the horizontal pipe (1), a galvanized air duct (3) is provided on the outside of the horizontal pipe (1), a plurality of sleeve blocks (4) are provided on the surface of the galvanized air duct (3), a bolt rod (5) is installed through the two adjacent sleeve blocks (4), a nut block (6) is threadedly connected to the surface of the bolt rod (5), a side plate (7) is provided on the rear side of the galvanized air duct (3), two symmetrically arranged hole blocks (8) are integrally formed on the surface of the side plate (7), a bolt rod (9) is provided on the outside of the galvanized air duct (3), a nut block (10) is threadedly connected to the surface of the bolt rod (9), two symmetrically arranged horizontal pipes (11) are welded to the surface of the sleeve (2), and a fireproof mud layer (14) is filled between the galvanized air duct (3) and the well wall.
2. The construction sealing structure at the connection point of a ductwork well according to claim 1, characterized in that, The second horizontal tube (11) is located between two adjacent sleeve blocks (4), and the second horizontal tube (11) is a square steel pipe.
3. The construction sealing structure at the duct connection well according to claim 2, characterized in that, Two symmetrically arranged rectangular blocks (12) are welded to the surface of the hole block (8), and the horizontal tube (11) is attached to the rectangular blocks (12).
4. The construction sealing structure at the duct connection well according to claim 3, characterized in that, The rear side of the side plate (7) is integrally formed with multiple steel bars (13).
5. The construction sealing structure at the duct connection well according to claim 4, characterized in that, The fireproof mud layer (14) is an asbestos fiber fireproof mud layer.