Exhaust passage connecting structure

Abstract

The utility model relates to an exhaust passage connecting structure. Comprising an exhaust passage section; a boss is arranged at the top of the exhaust passage section, the section length of the boss is equal to that of the exhaust passage section, the section width of the boss is smaller than that of the exhaust passage section, grouting grooves are formed in the two sides of the boss, reinforcing steel bars are arranged in the two grouting grooves, and the length of the reinforcing steel bars is larger than the section length of the exhaust passage section. The exposed ends of the reinforcing steel bars fall on a building floor slab, a socket piece is further arranged in the upper end opening of the exhaust passage section, and the shape of the outer contour of the socket piece is the same as the shape of the inner contour of the exhaust passage section. The bottom of the upper exhaust passage section is stacked on the top of the boss of the lower exhaust passage section, the upper portion of the socket piece is inserted into a bottom opening of the upper exhaust passage section, and joint mortar is arranged in the grouting groove. According to the exhaust passage connecting structure, the sealing performance and the structural strength of the connecting position are improved.

Description

Technical Field

[0001] This utility model belongs to the field of building exhaust duct technology, and in particular relates to an exhaust duct connection structure. Background Technology

[0002] Building exhaust ducts, also known as flues, are tubular devices for emitting waste gas and smoke. For example, residential exhaust ducts refer to vertical pipe products used to exhaust kitchen fumes or bathroom fumes; they are also called ventilation ducts, air ducts, or residential exhaust ducts. Exhaust ducts are usually constructed by sequentially splicing multiple exhaust duct bodies. The exhaust duct bodies are typically precast concrete pipes with rectangular cross-sections. During construction, the exhaust duct bodies are stacked and spliced ​​sequentially from bottom to top, and the joints are sealed. This creates an internal flow channel for the smoke to be discharged straight upwards, and measures are taken to seal the joints to prevent smoke leakage.

[0003] For the structure of exhaust ducts, the key parameters are the sealing performance of the connection points and the structural strength. The existing connection structure for exhaust duct segments involves attaching a mesh sheet to the connection point and then applying a mortar layer, which hardens to achieve a seal. However, this connection structure has room for improvement in terms of sealing performance and structural strength. Therefore, it is necessary to develop and design a new exhaust duct connection structure to enhance both the sealing performance and structural strength of the connection points. Utility Model Content

[0004] The purpose of this invention is to provide an exhaust duct connection structure that improves the sealing performance and structural strength of the connection point.

[0005] The technical solution adopted by this utility model is as follows: an exhaust duct connection structure, including an exhaust duct segment; a boss is provided on the top of the exhaust duct segment, the cross-sectional length of the boss is equal to the cross-sectional length of the exhaust duct segment and the cross-sectional width of the boss is less than the cross-sectional width of the exhaust duct segment, grouting grooves are formed on both sides of the boss, and reinforcing bars are provided in both grouting grooves, the length of the reinforcing bars is greater than the cross-sectional length of the exhaust duct segment, the exposed end of the reinforcing bars rests on the building floor slab, and a support plug is also provided inside the upper port of the exhaust duct segment, the outer contour shape of the support plug is the same as the inner contour shape of the exhaust duct segment, when splicing to construct the exhaust duct, the bottom of the upper exhaust duct segment is stacked on the top of the boss of the lower exhaust duct segment and the upper part of the support plug is inserted into the bottom port of the upper exhaust duct segment, and joint mortar is provided in the grouting groove.

[0006] Preferably, notches are provided on both sides of the boss, and winglets are provided on both sides of the support component. The winglets extend from the notches on their respective sides and rest on the reinforcing bars on their respective sides.

[0007] Preferably, the support is made of metal plate and is a closed ring shape. Two winglets are provided on each side and the winglets are formed by cutting the metal plate and bending it outward.

[0008] Preferably, a through-type steel bar groove is provided on the bottom of the grouting groove, and the reinforcing steel bar is located in the steel bar groove.

[0009] The advantages and positive effects of this utility model are:

[0010] This invention provides an exhaust duct connection structure. Compared with existing exhaust duct connection structures, this invention features a boss at the top of each exhaust duct segment. When the segments are stacked, grouting grooves are formed on both sides of the boss. Combined with internal support components, the injection of joint mortar into the grouting grooves ensures a tight seal at the connection point between the exhaust duct segments. Reinforcing steel bars are installed in both grouting grooves. During exhaust duct construction, the ends of these reinforcing steel bars can be integrated with the building floor slab. After the joint mortar is injected, the reinforcing steel bars strengthen the structural strength of the connection point between adjacent exhaust duct segments, thus significantly improving the overall structural strength of the exhaust duct. The reinforcing steel bars occupy a portion of the grouting grooves, thereby partially blocking the radial path at the connection point, further enhancing the sealing effect. Furthermore, the reinforcing steel bars reduce the amount of joint mortar used. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0012] Figure 2 This is a three-dimensional structural diagram of the main body of this utility model, from a top view.

[0013] Figure 3 This is a three-dimensional structural diagram of the main body of this utility model, from a lower perspective;

[0014] Figure 4 yes Figure 1 A three-dimensional structural diagram of the central exhaust duct, viewed from above.

[0015] In the picture:

[0016] 1. Exhaust duct segment; 2. Building floor slab; 3. Joint mortar; 4. Supporting element; 5. Reinforcing steel; 6. Boss; 7. Flange; 8. Grouting groove; 9. Reinforcing steel groove; 10. Notch. Detailed Implementation

[0017] To further understand the invention content, features and effects of this utility model, the following embodiments are provided in detail.

[0018] Please see Figure 1The exhaust duct connection structure of this utility model includes an exhaust duct segment 1, which is stacked sequentially in the vertical direction to form a complete exhaust duct located in the building. Adjacent exhaust duct segments 1 are connected by a connection structure. The connection structure should have good sealing performance to avoid smoke leakage, and at the same time, it should have good structural strength to ensure the overall structural strength of the exhaust duct.

[0019] Please see Figure 2 , Figure 3 and Figure 4 A boss 6 is provided at the top of the exhaust duct segment 1. The cross-sectional length of the boss 6 is equal to the cross-sectional length of the exhaust duct segment 1, and the cross-sectional width of the boss 6 is less than the cross-sectional width of the exhaust duct segment 1. Grouting grooves 8 are formed on both sides of the boss 6, and joint mortar 3 is placed in the grouting grooves 8. After the joint mortar 3 is injected, it is poured into the gaps of the connecting structure. After drying and hardening, it seals the gaps between adjacent exhaust duct segments 1 to prevent flue gas leakage.

[0020] Reinforcing steel bars 5 are provided in both grouting grooves 8. The length of the reinforcing steel bars 5 is greater than the cross-sectional length of the exhaust channel segment 1. The exposed ends of the reinforcing steel bars 5 fall on the building floor slab 2. Through subsequent on-site pouring, the exposed ends of the reinforcing steel bars 5 can be combined with the building floor slab 2 to form an integral whole. This can improve the overall structural strength of the exhaust channel and the bonding strength between the exhaust channel and the building floor slab 2.

[0021] In this embodiment, a through-hole steel bar groove 9 is provided on the bottom of both grouting grooves 8, and the reinforcing steel bar 5 is located in the steel bar groove 9. By providing the steel bar groove 9, the reinforcing steel bar 5 can be placed and positioned more easily.

[0022] Inside the upper port of exhaust duct segment 1, a support element 4 is provided. The outer contour shape of the support element 4 is the same as the inner contour shape of the exhaust duct segment 1. When splicing to construct the exhaust duct, the bottom of the upper exhaust duct segment 1 is stacked on top of the boss 6 of the lower exhaust duct segment 1, and the upper part of the support element 4 is inserted into the bottom opening of the upper exhaust duct segment 1. By setting the support element 4, the gap between the ports of adjacent exhaust duct segments 1 can be sealed from the inside, and the leakage of internal flue gas through the connection gap can be prevented by blocking the radial channel.

[0023] In this embodiment, notches 10 are provided on both sides of the boss 6, and flanges 7 are provided on both sides of the support component 4. The flanges 7 extend from the notches 10 on their respective sides and rest on the reinforcing steel bars 5 on their respective sides. The function of setting the flanges 7 is as follows: First, the flanges 7 rest on the reinforcing steel bars 5, so that the reinforcing steel bars 5 support the support component 4; second, the flanges 7 extend outward in the radial direction into the grouting groove 8, so that after the joint mortar 3 is injected and dried and hardened, the support component 4 and the joint mortar 3 have a better bonding effect, which can further improve the sealing of the connection structure and at the same time further improve the strength of the connection structure.

[0024] In this embodiment, the support element 4 is made of metal plate and is a closed ring shape. There are two winglets 7 on each side, and the winglets 7 are formed by cutting the metal plate and bending it outward.

[0025] Construction method:

[0026] First, install the lower exhaust duct segment 1. Then, install reinforcing steel bars 5 in the top steel bar groove 9. The exposed end of the reinforcing steel bars 5 rests on the building floor slab 2. Then, insert the support plug 4 into the top opening of the exhaust duct segment 1, so that the flanges 7 on both sides of the support plug 4 rest on the reinforcing steel bars 5 on their respective sides. Then, install the upper exhaust duct segment 1. Then, pour joint mortar 3 into the formed grouting groove 8. After the joint mortar 3 dries and hardens, the adjacent exhaust duct segments 1 are combined into a whole.

Claims

1. An exhaust passage connection structure comprising an exhaust passage section (1); characterized by: The boss (6) is arranged at the top of the exhaust duct segment (1), the cross-section length of the boss (6) is equal to the cross-section length of the exhaust duct segment (1), the cross-section width of the boss (6) is less than the cross-section width of the exhaust duct segment (1), the grouting grooves (8) are formed at two sides of the boss (6), the reinforcing steel bars (5) are arranged in the two grouting grooves (8), the length of the reinforcing steel bars (5) is greater than the cross-section length of the exhaust duct segment (1), the exposed end of the reinforcing steel bars (5) falls on the building floor (2), the socket piece (4) is further arranged in the upper end of the exhaust duct segment (1), the outer contour shape of the socket piece (4) is the same as the inner contour shape of the exhaust duct segment (1), when the exhaust duct is spliced and constructed, the bottom of the upper exhaust duct segment (1) is stacked on the top of the boss (6) of the lower exhaust duct segment (1), the upper part of the socket piece (4) is inserted into the bottom of the upper exhaust duct segment (1), and the joint mortar (3) is arranged in the grouting groove (8).

2. The vent passage connection structure according to Claim 1, wherein: The notches (10) are arranged at two sides of the boss (6), the flaps (7) are arranged at two sides of the socket piece (4), the flap (7) is stretched out from the notch (10) on the side and falls on the reinforcing steel bar (5) on the side.

3. The vent passage connection structure according to Claim 2, wherein: The socket piece (4) is enclosed by the metal plate and is in a closed ring shape, two flaps (7) are arranged on each side, and the flap (7) is formed by cutting the metal plate and bending outward.

4. The vent passage connection structure according to Claim 3, wherein: The steel bar grooves (9) are arranged in the groove bottoms of the grouting grooves (8), and the reinforcing steel bars (5) are arranged in the steel bar grooves (9).

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