A prefabricated flue leakage-proof smoke connecting structure

Abstract

The utility model discloses a prefabricated flue leakproof smoke connecting structure, including the connecting card piece of annular, the upper and lower two annular end faces of connecting card piece are opposite and are provided with the closed loop type's card groove of accommodating prefabricated flue wall, the card groove width is greater than the prefabricated flue wall thickness, when two section flues are connected, the end of two section prefabricated flues needing to be connected is arranged in the card groove of the upper and lower two end faces of connecting card piece respectively, and fills the sealing material in the card groove, and the inside and outside two sides of flue connecting end are covered through connecting card piece and sealing material. Through the cooperation of the socket connection of the standardized prefabricated connecting card piece and the filling sealing of the sealing material, the prefabricated flue connecting place zero smoke leakage, zero smell stringing are realized, and the installation efficiency, construction quality and standardization degree are improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a prefabricated flue smoke-proof connection structure, which is suitable for the upper and lower layer connection construction of prefabricated flues. Background Technology

[0002] In traditional high-rise residential building prefabricated flue installation, the connection between upper and lower flues is mostly achieved through on-site welding of steel reinforcement supports or direct spigot insertion, which has many technical drawbacks. Traditional methods require on-site steel reinforcement welding and support positioning, demanding high technical skills from construction workers, involving cumbersome procedures, and resulting in low construction efficiency. Poor sealing at joints can easily lead to smoke leakage and odor cross-contamination, affecting the normal function of the kitchen and incurring high maintenance costs later. The lack of standardized connection components leads to large on-site construction errors, making it difficult to guarantee the verticality and stability of the flue installation, posing safety hazards. The complex construction procedures also result in slow installation progress, affecting the overall project schedule.

[0003] For example, the flue connection structure disclosed in Chinese patent CN220133410U has two flue units connected by outward-flaring edges at both ends, and then connected by screws. See the appendix of this patent. Figure 2 As shown in the diagram, the chimney connection disclosed in Chinese Patent CN210563701U involves folding the chimney connection end outwards and then fixing it with a flange. All other chimney unit connections described above involve connecting after folding. This method is convenient and suitable for situations with lower chimney sealing requirements, but it is not suitable for chimneys in residential kitchens. Poor sealing performance in residential chimneys can cause smoke and odor leakage between floors. Furthermore, there is a drawback: the connection point between two chimney sections lacks external support, making it difficult to maintain verticality when the connected chimney is long. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated flue gas connection structure to solve the problems of poor sealing performance, smoke leakage and odor transfer in traditional prefabricated flue gas connections.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a smoke-proof connection structure for prefabricated flues in high-rise residential buildings, comprising an annular connecting clip. The upper and lower annular end faces of the connecting clip are respectively provided with closed-loop grooves for accommodating the prefabricated flue wall. The width of the grooves is greater than the thickness of the prefabricated flue wall. When two flue sections are connected, the ends of the two prefabricated flue sections to be connected are respectively placed in the grooves on the upper and lower end faces of the connecting clip, and sealing material is filled into the grooves. The connecting clip and the sealing material cover the inner and outer sides of the flue connection end.

[0006] Preferably, the connecting clip includes an annular web, with an inner side plate and an outer side plate fixedly connected to the inner and outer sides of the web perpendicular to the web, and the clip grooves are formed on the upper and lower end faces of the web.

[0007] Preferably, the inner shape of the slot is the same as the inner wall shape of the prefabricated flue.

[0008] Preferably, the web is located at the center of the height of the inner and outer side plates.

[0009] Preferably, the connecting clip is made of stainless steel or aluminum alloy, with an inner and outer plate thickness of 3mm, an overall height of 100mm, a slot width 20mm greater than the wall thickness of the prefabricated flue, and a web plate thickness of 5mm.

[0010] Preferably, a connecting plate is fixedly connected to at least one side of the outer side plate of the connecting clip, the connecting plate being used for fixed connection with the structural wall or the reserved cantilever.

[0011] Preferably, at least one first connecting plate and a second connecting plate are fixedly connected to opposite sides of the outer side plate of the connecting card, wherein the dimensions of the first connecting plate are -50×40×5mm and the dimensions of the second connecting plate are -14×60×5mm.

[0012] Preferably, the sealing material is made by mixing polymer mortar and water in a 3:2 mass ratio.

[0013] Preferably, when the prefabricated flue is connected to the connecting clip, the insertion depth of the prefabricated flue is 30mm.

[0014] Preferably, the longitudinal cross-section of the connecting card is H-shaped.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) The U-shaped slot of the H-type connecting card is inserted into the prefabricated flue and the sealing material (polymer mortar filling layer) is squeezed to form a seamless sealing barrier, which completely solves the problem of smoke leakage and odor.

[0017] (2) The H-type connecting clips are standardized prefabricated components, eliminating the need for on-site welding and increasing installation efficiency by 50%.

[0018] (3) The connecting plate can be adapted to various building fixing methods and has a wide range of applications. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the connecting card.

[0020] Figure 2This is a schematic diagram of the planar structure connecting the prefabricated flue and the connecting clips, which will be connected by rebar anchoring later.

[0021] Figure 3 This is a cross-sectional structural diagram of the connection between the prefabricated flue and the connecting clips, which will be connected by rebar anchoring later.

[0022] Figure 4 This is a plan view of the pre-installed cantilever installation scheme of this utility model, which is connected by a concrete cantilever.

[0023] Figure 5 This is a cross-sectional view of the pre-reserved cantilever installation scheme of this utility model, which is connected by a concrete cantilever method.

[0024] Figure Labels

[0025] 1-Connecting clip, 11-Outer side plate, 12-Web plate, 13-Inner side plate, 14-Card slot, 21-First connecting plate, 22-Second connecting plate; 3-Sealing material; 4-Precast flue; 5-Anchoring steel bar; 6-Concrete overhang. Detailed Implementation

[0026] 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.

[0027] For leak-proof connection structures of prefabricated flues in high-rise residential buildings, please refer to [reference needed]. Figures 1 to 5 The system includes a connecting clip 1 and a connecting plate. The connecting clip 1 is made of stainless steel or aluminum alloy and includes an annular web 12. An inner side plate 13 and an outer side plate 11 are fixedly connected to the inner and outer sides of the web 12, respectively. U-shaped slots 14 are formed at the upper and lower end faces of the web 12. The inner side plate 13 and the outer side plate 11 are respectively arranged perpendicular to the web 12 and are connected and fixed to the web 12 by welding. The web 12 is preferably located at the center of the height of the inner side plate 13 and the outer side plate 11. The preferred dimensions of the connecting clip are: the thickness of the inner and outer side plates is 3mm, the overall height is 100mm, the net width of the slot is 20mm larger than the wall thickness of the prefabricated flue, and the thickness of the web is 5mm.

[0028] A connecting plate is fixedly connected to at least one side of the connecting clip 1. The connecting plate is used for fixed connection with the structural wall or the reserved cantilever edge. In this embodiment, a first connecting plate 21 and a second connecting plate 22 are respectively provided on opposite sides of the connecting clip 1. The dimensions of the first connecting plate 21 are -50×40×5mm, and the dimensions of the second connecting plate 22 are -14×60×5mm. The dimensions of the first connecting plate 21 and the second connecting plate 22 are not limited to the specific dimensions mentioned above, and are determined according to the actual building gaps.

[0029] When connecting the prefabricated flue 4 to the connecting clip 1, the prefabricated flue 4 is placed at the center of the clip 14, ensuring that there are filling gaps between the prefabricated flue 4 and both the inner and outer side plates. Simultaneously, ensure that the prefabricated flue 4 is inserted to a sufficient depth, generally greater than or equal to 30mm, so that there are also filling gaps between the prefabricated flue 4 and the bottom of the clip 14. Sealing material 3, composed of polymer mortar and water in a 3:2 mass ratio, is filled into these gaps. During construction, the connecting clip 1 is first filled with sealing material 3, and then the prefabricated flue 4 is inserted to the designed depth, ensuring that the inner, outer, and bottom sides of the clip 1 and the prefabricated flue are filled with sealing material 3. This achieves a sealed connection of the prefabricated flue, improving the sealing performance at the connection point and ensuring zero smoke leakage and zero odor transfer at the connection.

[0030] Connecting clip 1 is used for installation connection. For example, if a post-reinforcement rebar installation method is adopted, a Φ12 anchor rebar 5 is drilled into the structural wall to a depth of 150mm. The second connecting plate 22 is fixed to the anchor rebar 5 using bolts. The first connecting plate 21 is fixed to the floor slab. (See attached diagram.) Figure 3 If a pre-reserved cantilever design is adopted, the second connecting plate 22 is welded and fixed to the 20mm wide concrete cantilever 6 embedded in the structural wall, and the first connecting plate 21 is fixed to the floor slab. (See attached diagram) Figure 4 .

[0031] Next, fill with sealing material 3: mix the mortar with water at a mass ratio of 3:2 and inject it into the U-shaped groove of the connecting clip 1. Use the grouting method to ensure that the gaps are filled.

[0032] Finally, the prefabricated flue is connected by a socket: after the lower prefabricated flue is positioned, the upper prefabricated flue is inserted into the U-shaped groove to a depth of 30mm, the polymer mortar filling layer is squeezed to make the overflow even, and the joint is smoothed to ensure a seal.

[0033] Working principle: When the upper prefabricated flue is inserted into the U-shaped slot of the connecting clip 1, the polymer mortar is squeezed and expanded to fill all gaps, forming a physical sealing layer; the multi-point fixing structure of the connecting plate ensures the overall stability.

[0034] It should be noted that the fixing method between the connecting plate and the building structure is not limited to rebar installation or edge connection. Any solution that uses connecting clips to insert and squeeze polymer mortar to achieve prefabricated flue sealing is within the scope of protection of this utility model.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated flue gas duct anti-smoke connection structure, characterized in that, The device includes a ring-shaped connecting clip. The upper and lower annular end faces of the connecting clip are respectively provided with closed-loop grooves for accommodating prefabricated flue walls. The width of the grooves is greater than the thickness of the prefabricated flue wall. When two flue sections are connected, the ends of the two prefabricated flue sections to be connected are respectively placed in the grooves on the upper and lower end faces of the connecting clip, and the grooves are filled with sealing material. The connecting clip and the sealing material cover the inner and outer sides of the flue connection end.

2. The prefabricated flue gas duct anti-smoke connection structure according to claim 1, characterized in that, The connecting clip includes an annular web, with an inner side plate and an outer side plate fixedly connected to the inner and outer sides of the web perpendicular to the web, and the clip grooves are formed on the upper and lower end faces of the web.

3. The prefabricated flue gas duct anti-smoke connection structure according to claim 2, characterized in that, The inner shape of the slot is the same as the inner wall shape of the flue.

4. The prefabricated flue gas duct anti-smoke connection structure according to claim 2, characterized in that, The web is located at the center of the height of the inner and outer side plates.

5. The prefabricated flue gas duct anti-smoke connection structure according to claim 2, characterized in that, The connecting clip is made of stainless steel or aluminum alloy, with an inner and outer plate thickness of 3mm and an overall height of 100mm. The net width of the slot is 20mm greater than the wall thickness of the prefabricated flue, and the web plate thickness is 5mm.

6. The prefabricated flue gas duct anti-smoke connection structure according to claim 2, characterized in that, A connecting plate is fixedly connected to at least one side of the outer side plate of the connecting clip, and the connecting plate is used to fix and connect to the structural wall or the reserved cantilever.

7. The prefabricated flue gas duct anti-smoke connection structure according to claim 6, characterized in that, At least one first connecting plate and a second connecting plate are fixedly connected to opposite sides of the outer side plate of the connecting card, the first connecting plate having dimensions of -50×40×5mm and the second connecting plate having dimensions of -14×60×5mm.

8. The prefabricated flue gas duct anti-smoke connection structure according to claim 1, characterized in that, When the prefabricated flue is connected to the connecting clip, the insertion depth of the prefabricated flue is greater than or equal to 30mm.

9. The prefabricated flue gas duct anti-smoke connection structure according to claim 1, characterized in that, The longitudinal cross-section of the connecting card is H-shaped.

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