Cement flue sealing structure
By combining a polyurethane foam layer, a cement slurry layer, and a wire mesh layer around the periphery of the cement flue, the problem of smoke leakage and cross-contamination in the cement flue is solved, achieving a highly efficient sealing effect and convenient construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-03-27
AI Technical Summary
Existing precast cement flues have quality defects such as sand holes and cracks, which lead to smoke leakage and cross-contamination. Furthermore, gaps caused by improper construction have not been effectively treated.
A combined sealing structure consisting of a polyurethane foam layer, a cement slurry layer, and a wire mesh layer is adopted, along with sealant treatment, to form a U-shaped wrap around the outer perimeter of the cement flue. The flue joints are then connected by cement mortar grouting to ensure airtightness.
It effectively seals sand holes and cracks in cement flues, preventing smoke leakage and cross-contamination. The construction is simple and environmentally friendly, and the sealing effect is ensured through professional equipment testing.
Smart Images
Figure CN224048589U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cement flue construction technical field, especially a cement flue sealing structure. BACKGROUND
[0002] The flue is the indispensable functional unit in the kitchen and bathroom of the residential building, but the quality defects such as sand hole and crack of the finished cement flue and the installation construction not in place can cause the situation of smoke leakage and smoke mixing after the tenants move in. In addition, the gap between the existing construction cement flue and wall is not treated, and the defects such as sand hole or crack in the flue pipe body can cause smoke leakage, even can cause smoke mixing between the rooms or between the upper and lower floors, and it is difficult to find the leakage point. Therefore, the cement flue needs to be sealed. UTILITY MODEL CONTENT
[0003] The utility model provides a cement flue sealing structure to solve the existing finished cement flue has the sand hole or the crack and seals and seals technical problem.
[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] A cement flue sealing structure, comprising a cement flue, a wall body arranged on one side of the cement flue, a polyurethane foaming layer arranged between the wall body and the cement flue, a cement mortar layer arranged on the outer side of the cement flue, and a mesh layer arranged between the cement mortar layer and the cement flue.
[0006] The cement mortar layer is in the shape of a Chinese character, and the cement mortar layer and the polyurethane foaming layer form a mouth-shaped type and are wrapped and sealed around the outer periphery of the cement flue.
[0007] Further, the cement flue is a prefabricated finished product cement pipe, and the cement flue is in the shape of a rectangle; the cement flue is connected in a lengthwise joint in the building height direction.
[0008] Further, the cement flue joint is sealed by cement mortar, and the joint is arranged at the hole of the floor.
[0009] Further, the thickness of the polyurethane foaming layer is adapted to the gap width between the cement flue and the wall body, and the polyurethane foaming layer is fully laid in the height range of the cement flue.
[0010] Further, the polyurethane foaming layer is provided with sealing glue at both ends, and the sealing glue is connected between the both ends of the polyurethane foaming layer and the wall body in the form of a chamfer.
[0011] Further, the mesh layer is fully laid and lap jointed in the height direction of the cement flue, and is integrally arranged in the form of a Chinese character in the horizontal direction; the length of the lap joint is not less than 100 mm.
[0012] Further, the horizontal two ends of the hanging net layer also extend to the cement flue outer wall body, and the extension width is not less than 20 cm.
[0013] Further, the cement paste layer is fully arranged corresponding to the hanging net layer, and a chamfer is arranged at the inside corner of the wall body and the cement flue; and an edge closing layer is arranged on the wall body corresponding to the hanging net layer.
[0014] The beneficial effects of the utility model are embodied in:
[0015] The utility model considers the leakage problem of the flue pipe body, adopts the hanging net plaster anti-crack mortar method to block, simultaneously considers that the mortar hanging of the flue wall side is inconvenient and leads to the problem of smoke leakage and smoke mixing, adopts the injection polyurethane foaming agent glue for the wall gap, and the outside adopts the silicone sealant caulking treatment, cuts off the smoke leakage path from the source, the materials used are the sealing materials commonly used in engineering, simple operation, green and environmental protection, after construction, professional smoke and air blowing equipment are used to test the sealing effect, and the construction quality is ensured.
[0016] Other features and advantages of the utility model will be set forth in the subsequent description, and some become apparent from the description, or are understood from the implementation of the utility model; the main purpose and other advantages of the utility model can be realized and obtained through the scheme specially pointed out in the description. DRAWINGS
[0017] Figure 1 It is the vertical section view of the cement flue sealing structure;
[0018] Figure 2 It is the horizontal section view of the cement flue and its connecting structure.
[0019] The drawing mark: 1-cement flue, 2-wall body, 3-floor, 4-polyurethane foaming layer, 5-sealant, 6-cement paste layer, 7-hanging net layer, 8-chamfer, 9-edge closing layer. CONCRETE EMBODIMENT
[0020] Taking a residential area as an example, as shown in Figure 1 And Figure 2 The cement flue sealing structure includes the cement flue 1, the wall body 2 arranged at one side of the cement flue 1, the polyurethane foaming layer 4 arranged between the wall body 2 and the cement flue 1, the cement paste layer 6 arranged at the outer side of the cement flue 1 and the hanging net layer 7 arranged between the cement paste layer 6 and the cement flue 1.
[0021] The cement flue 1 is a prefabricated cement pipe, and the shape of the cement flue 1 is rectangular;The cement flue 1 is connected by splicing in the building height direction. The cement flue 1 splicing joint is sealed by cement mortar, and the splicing joint is arranged as the hole of the floor 3.
[0022] In the embodiment, the polyurethane foaming layer 4 has a thickness adapted to the gap width between the cement chimney 1 and the wall 2, and the polyurethane foaming layer 4 is arranged in full in the height range of the cement chimney 1. The polyurethane foaming layer 4 is provided with sealant 5 at both ends, and the sealant 5 is connected between both ends of the polyurethane foaming layer 4 and the wall 2 in the form of a chamfer 8.
[0023] In the embodiment, the mesh layer 7 is arranged in full in the height direction of the cement chimney 1 and is connected in lap joint, and is arranged in the form of a U in the horizontal direction and is integrated; the length of the lap joint is not less than 100 mm. The horizontal direction both ends of the mesh layer 7 also extend to the wall 2 outside the cement chimney 1, and the width of the extension is not less than 20 cm.
[0024] In the embodiment, the cement mortar layer 6 is in the form of a U, the cement mortar layer 6 is enclosed into a mouth-shaped type with the polyurethane foaming layer 4 and is wrapped and sealed around the outer periphery of the cement chimney 1. The cement mortar layer 6 is arranged in full corresponding to the mesh layer 7, and is provided with a chamfer 8 at the inside corner of the wall 2 and the cement chimney 1; and is provided with an edge collecting layer 9 on the wall 2 corresponding to the mesh layer 7.
[0025] The above merely describes a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, and any change or replacement thought by any person skilled in the art within the technical range disclosed by the present application should be covered in the protection scope of the present application.
Claims
1. A cement flue sealing structure, characterized by, The cement flue (1), the wall (2) arranged on one side of the cement flue (1), the polyurethane foaming layer (4) arranged between the wall (2) and the cement flue (1), the cement mortar layer (6) arranged outside the cement flue (1), and the mesh layer (7) arranged between the cement mortar layer (6) and the cement flue (1); The cement mortar layer (6) is in the shape of a Chinese character and is wrapped around the outer periphery of the cement flue (1).
2. A cement flue seal structure as defined in claim 1, wherein The cement flue (1) is a prefabricated cement pipe, and the cement flue (1) is in the shape of a rectangle; the cement flue (1) is connected in the longitudinal direction of the building height.
3. A cement flue seal structure as defined in claim 2 wherein, The cement flue (1) is connected by cement mortar jointing, and the joint is arranged at the hole of the floor (3).
4. A cement flue seal structure as defined in claim 1, wherein The thickness of the polyurethane foaming layer (4) is adapted to the gap width between the cement flue (1) and the wall (2), and the polyurethane foaming layer (4) is fully laid in the height range of the cement flue (1).
5. A cement flue seal structure as defined in claim 4 wherein, The polyurethane foaming layer (4) is provided with sealing glue (5) at both ends, and the sealing glue (5) is connected in the shape of a chamfer (8) between the polyurethane foaming layer (4) at both ends and the wall (2).
6. A cement flue seal structure as defined in claim 1, wherein, The mesh layer (7) is fully laid and overlap connected in the height direction of the cement flue (1), and is in the shape of a Chinese character and integrally arranged in the horizontal direction; the length of the overlap is not less than 100 mm.
7. A cement flue seal structure as defined in claim 6 wherein, The horizontal ends of the mesh layer (7) also extend to the outer wall (2) of the cement flue (1), and the extension width is not less than 20 cm.
8. A cement flue seal structure as defined in claim 7 wherein, The cement mortar layer (6) is fully laid corresponding to the mesh layer (7), and is provided with a chamfer (8) at the inside corner of the wall (2) and the cement flue (1); an edge collecting layer (9) is arranged on the wall (2) corresponding to the mesh layer (7).