Smoke flue out-of-roof node structure

Abstract

The utility model discloses a smoke flue roof outlet node structure which comprises a flat roof and an exhaust passage on the flat roof, the exhaust passage is communicated with the smoke flue, a roof composite layer is arranged on the flat roof and comprises a first waterproof roll layer, and the first waterproof roll layer extends upwards at the internal corner of the exhaust passage and penetrates through the roof composite layer. The first waterproof roll layer extends to the outer wall of the exhaust passage and is fixed, the outer wall of the exhaust passage is provided with a protective layer, and the protective layer covers the part, higher than the roof composite layer, of the first waterproof roll layer. The exhaust passage has the advantages that the exhaust passage and the flat roof are integrally poured and formed through concrete, the integrality is good, and the roof load can be effectively controlled; the flat roof adopts a double-layer waterproof measure, the waterproof service life of the roof is effectively prolonged through multi-layer protection, and the leakage risk is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of roof waterproofing, and in particular relates to a smoke duct roof node structure. Background Art

[0002] The flue duct is a tubular device used for exhaust gas and smoke discharge in construction projects, also known as exhaust duct, ventilation duct, and residential exhaust duct. The node of the smoke duct exiting the roof is one of the key nodes. The node structure is constructed by precast concrete slabs, brickwork and other materials, which greatly increases the load on the roof; at the same time, multiple construction joints are added, resulting in a great risk of leakage on the roof, complex node processing, and cumbersome procedures. In order to reduce the roof load and leakage risk, it is necessary to design a low-load, leakage-free smoke duct exit roof node structure based on the actual site. Utility Model Content

[0003] The utility model aims to provide a smoke duct roof node structure, which solves the problems of roof load and leakage risk of smoke duct roof nodes.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A smoke duct roof node structure comprises a flat roof and an exhaust duct on the flat roof, the exhaust duct is connected with the smoke duct, a roof composite layer is arranged on the flat roof, the roof composite layer comprises a first waterproof roll material layer, the first waterproof roll material layer extends upward at the inner corner of the exhaust duct and passes through the roof composite layer, the first waterproof roll material layer extends to the outer wall of the exhaust duct and is fixed, the outer wall of the exhaust duct is provided with a protective layer, and the protective layer covers the part of the first waterproof roll material layer higher than the roof composite layer.

[0006] Furthermore, the flat roof and the exhaust duct are an integral cast-in-place structure.

[0007] Furthermore, the flue gas duct is inserted into the exhaust duct, and polymer mortar is provided between the exhaust duct and the flue gas duct.

[0008] Furthermore, a hood is provided at the top opening of the exhaust duct.

[0009] Furthermore, an additional waterproof roll material layer is provided between the first waterproof roll material layer and the inner corner of the exhaust duct, and cement mortar is provided between the corner of the additional waterproof roll material layer and the inner corner of the exhaust duct.

[0010] Furthermore, a reserved groove is provided on the outer wall of the exhaust duct, the end of the first waterproof coiled material layer is fixed in the reserved groove, and a polymer mortar bonded to the first waterproof coiled material layer is provided in the reserved groove.

[0011] Furthermore, the end of the first waterproof membrane layer is fixed in the reserved groove by nails.

[0012] Furthermore, a drip portion is provided at a positive angle at the lower end of the eaves of the exhaust duct, and the lower end surface of the eaves of the exhaust duct is concave.

[0013] Furthermore, the roofing composite layer also includes a mortar leveling layer, a thermal insulation layer, a fireproof membrane layer, a waterproof layer and a protective layer. The first waterproof membrane layer, the mortar leveling layer, the thermal insulation layer, the fireproof membrane layer, the waterproof layer and the protective layer are arranged layer by layer from bottom to top.

[0014] Furthermore, polyurethane sealant is provided between the end of the waterproof layer and the first waterproof membrane layer.

[0015] Beneficial effects of the utility model:

[0016] 1. The exhaust duct and the flat roof are cast in one piece with concrete, avoiding the high load problem caused by secondary construction such as hollow bricks after reserving holes in the flat roof. The integrity is good and the roof load can be effectively controlled.

[0017] 2. Double-layer waterproofing measures are adopted for flat roofs. The first layer of waterproof membrane extends upward from the roof to the outer wall of the exhaust duct. Additional waterproof membrane is laid on both sides of the inner corners. Single-component polyurethane sealant is used to caulk the joints between the second waterproof layer and the exhaust duct. Multi-layer protection effectively increases the waterproof life of the roof and reduces the risk of leakage.

[0018] 3. When constructing the roof protection layer, a positive corner drip is made at the lower end of the exhaust duct eaves. The lower edge of the drip is concave and the corner tip is protruding, which is conducive to dripping. The outer contour size of the finished hood bottom plate is larger than the outer contour size of the exhaust duct, covering the drip part of the exhaust duct inside, from top to bottom, with large covering small, layer by layer, effectively isolating the infiltration of rainwater.

[0019] The aforementioned main scheme of the utility model and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and protected by the utility model; and in the utility model, (non-conflicting options) options and other options can also be freely combined. After understanding this scheme, those skilled in the art can understand that there are many combinations based on the existing technology and common knowledge, all of which are technical schemes to be protected by the utility model, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model.

[0021] In the figure: 1-flat roof, 2-smoke duct, 3-exhaust duct, 4-wind hood, 5-first waterproof membrane layer, 51-additional waterproof membrane layer, 6-mortar leveling layer, 7-insulation layer, 8-fireproof membrane layer, 9-waterproof layer, 10-protective layer, 11-nails, 12-polymer mortar, 13-drip part, 14-cement mortar, 15-polyurethane sealant. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with specific embodiments and drawings.

[0023] refer to Figure 1 As shown, a smoke duct roof node structure ensures the waterproof requirements of the roof through double-layer protection of an additional waterproof layer and a roof drainage layer. All construction joints are sealed with polymer mortar, and the construction gaps can be sealed both inside and outside to prevent damage to the roof construction joints and exhaust duct joints, which may lead to problems such as roof leakage and smoke backflow, thereby ensuring the long-term use of the structure.

[0024] The structure specifically includes a flat roof 1, a smoke duct 2, an exhaust duct 3, a wind hood 4, a first waterproof membrane layer 5, an additional waterproof membrane layer 51, a mortar leveling layer 6, an insulation layer 7, a fireproof membrane layer 8, a waterproof layer 9, a protective layer 10, nails 11, polymer mortar 12, a drip portion 13, cement mortar 14 and a polyurethane sealant 15.

[0025] The flat roof 1 is a cast-in-place concrete slab, and an exhaust duct 3 is arranged on the flat roof 1. The exhaust duct 3 is cast-in-place together with the flat roof as a whole, that is, the flat roof 1 and the exhaust duct 3 are a cast-in-place structure. A flue gas duct 2 is reserved, and the exhaust duct 3 is hollow inside and communicated with the flue gas duct 2. Specifically, the flue gas duct 2 is inserted into the exhaust duct 3, and a polymer mortar 12 is arranged between the exhaust duct 3 and the flue gas duct 2 to fill and seal the gap.

[0026] The lower end of the eaves of the outer wall of the exhaust duct 3 is provided with a dripping part 13 at the positive corner position, and the lower end surface of the eaves of the exhaust duct 3 is concave and the corner tip is protruding. During construction, a positive corner drip is applied at the lower end of the eaves of the exhaust duct to ensure that the rainwater left from the hood drips smoothly.

[0027] A hood 4 is fixedly provided at the top opening of the exhaust duct 3. Specifically, embedded bolts are embedded on the top surface of the exhaust duct 3. The embedded bolts are connected to the bottom plate of the finished hood. The bottom plate of the hood reserves an inner hole that is consistent with the inner hole size of the exhaust duct 3 to ensure smooth smoke exhaust. The outer contour size of the bottom plate of the hood 4 is larger than the outer contour size of the exhaust duct, covering the dripping part of the exhaust duct to prevent rainwater from seeping in.

[0028] A roofing composite layer is provided on the flat roof 1, and the roofing composite layer is a composite layered structure that realizes leveling, heat preservation, fire prevention, waterproofing and / or protection functions for the flat roof 1. Specifically, the roofing composite layer includes a first waterproofing membrane layer 5, a mortar leveling layer 6, a heat preservation layer 7, a fireproofing membrane layer 8, a waterproofing layer 9 and a protective layer 10.

[0029] The upper layer of the flat roof 1 is the first waterproof roll material layer 5 (two layers), which extends upward at the inner corner of the exhaust duct 3 and passes through the roof composite layer. The first waterproof roll material layer 5 extends to the outer wall of the exhaust duct 3 and is fixed. The first waterproof roll material layer 5 is extended and arranged to improve the waterproof and water blocking effect at this position. The first waterproof roll material layer extends to a height of 600 mm, and cement nails are fixed at intervals of 500 mm.

[0030] A reserved groove is provided on the outer wall of the exhaust duct 3, and the end of the first waterproof membrane layer 5 is fixed in the reserved groove by a nail 11. The reserved groove is provided with a polymer mortar 12 that fits the first waterproof membrane layer 5. Before the first waterproof membrane layer is fixed with cement nails, the polymer mortar is filled in the lower inner corner of the reserved groove to ensure that the waterproof membrane is tightly fitted with the polymer mortar after being fixed with cement nails.

[0031] An additional waterproofing roll layer 51 (one layer) is provided between the first waterproofing roll layer 5 and the inner corner of the exhaust duct 3, and a cement mortar 14 is provided between the corner of the additional waterproofing roll layer 51 and the inner corner of the exhaust duct 3. The additional waterproofing roll is made of the same material as the first waterproofing roll, and is laid under the first waterproofing roll and laid synchronously with the first waterproofing roll. The laying length of the additional waterproofing roll on both sides of the corner must be greater than 250 mm.

[0032] The first waterproofing membrane layer 5, mortar leveling layer 6, insulation layer 7, fireproofing membrane layer 8, waterproofing layer 9 and protective layer 10 are arranged layer by layer from bottom to top. A polyurethane sealant 15 is provided between the end of the waterproofing layer 9 and the first waterproofing membrane layer 5, and a single-component polyurethane sealant is used to caulking within 30mm of the overlap between the waterproofing layer and the exhaust duct to ensure the connection and sealing of the waterproofing layer and the waterproofing membrane of the exterior facade of the exhaust duct. The remaining layers can be constructed using engineering practices. The outer wall of the exhaust duct 3 is provided with a protective layer 10, which covers the part of the first waterproofing membrane layer 5 that is higher than the roofing composite layer.

[0033] The above basic examples and further optional examples of the utility model can be freely combined to form multiple embodiments, which are all embodiments that can be adopted and claimed for protection by the utility model. In the scheme of the utility model, each optional example can be arbitrarily combined with any other basic examples and optional examples.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A smoke duct roof node structure, comprising a flat roof (1) and an exhaust duct (3) on the flat roof (1), wherein the exhaust duct (3) is connected to the smoke duct (2), and is characterized in that: The flat roof (1) is provided with a roofing composite layer, the roofing composite layer comprising a first waterproofing roll material layer (5), the first waterproofing roll material layer (5) extending upward at the inner corner of the exhaust duct (3) and passing through the roofing composite layer, the first waterproofing roll material layer (5) extending to the outer wall of the exhaust duct (3) and being fixed, the outer wall of the exhaust duct (3) being provided with a protective layer (10), the protective layer (10) covering the portion of the first waterproofing roll material layer (5) higher than the roofing composite layer.

2. The smoke duct roof node structure according to claim 1, characterized in that: The flat roof (1) and the exhaust duct (3) are an integral cast-in-place structure.

3. The smoke duct roof node structure according to claim 1 or 2, characterized in that: The flue gas duct (2) is inserted into the exhaust duct (3), and a polymer mortar (12) is provided between the exhaust duct (3) and the flue gas duct (2).

4. The smoke duct roof node structure according to claim 1 or 2, characterized in that: A hood (4) is provided at the top opening of the exhaust duct (3).

5. The smoke duct roof node structure according to claim 1, characterized in that: An additional waterproof roll material layer (51) is provided between the first waterproof roll material layer (5) and the inner corner of the exhaust duct (3), and cement mortar (14) is provided between the corner of the additional waterproof roll material layer (51) and the inner corner of the exhaust duct (3).

6. The smoke duct roof node structure according to claim 1 or 5, characterized in that: A reserved groove is provided on the outer wall of the exhaust duct (3), the end of the first waterproof coiled material layer (5) is fixed in the reserved groove, and a polymer mortar (12) in contact with the first waterproof coiled material layer (5) is provided in the reserved groove.

7. The smoke duct roof node structure according to claim 6, characterized in that: The end of the first waterproof coiled material layer (5) is fixed in the reserved groove by means of a nail (11).

8. The smoke duct roof node structure according to claim 1, characterized in that: The lower end of the eaves of the exhaust duct (3) is provided with a drip portion (13) at a positive corner position, and the lower end surface of the eaves of the exhaust duct (3) is concave.

9. The smoke duct roof node structure according to claim 1, characterized in that: The roofing composite layer further comprises a mortar leveling layer (6), a thermal insulation layer (7), a fireproof roll material layer (8), a waterproof layer (9) and a protective layer (10), wherein the first waterproof roll material layer (5), the mortar leveling layer (6), the thermal insulation layer (7), the fireproof roll material layer (8), the waterproof layer (9) and the protective layer (10) are arranged layer by layer from bottom to top.

10. The smoke outlet roof node structure according to claim 9, characterized in that: A polyurethane sealant (15) is provided between the end of the waterproof layer (9) and the first waterproof coiled material layer (5).

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