Butt joint construction structure for variable cross-section exhaust passage at floor slab

Abstract

The utility model discloses a floor variable cross-section exhaust passage butt joint construction structure which comprises a side wall, a floor, a lower exhaust passage and an upper exhaust passage, an unloading connecting piece is arranged at the bottom end of the upper exhaust passage, the unloading connecting piece comprises two steel bars and a bearing disc, the bearing disc is formed by upward flanging of the inner side and the outer side of a square annular steel plate, and the upper end of the steel plate is connected with the side wall. The turnups on the inner side and the outer side form grooves, the grooves correspond to the upper exhaust channel, the four edges of the upper exhaust channel are located in the grooves in the four edges of the bearing disc respectively, and the two steel bars are welded to the outer side face of the bearing disc in parallel. A novel bearing structure is adopted, the middle of the bearing structure is made of square annular steel plates, the inner side and the outer side of the bearing structure are both doubled upwards, full-surrounding protection is formed, an upper exhaust passage is still located in a groove under the vibration condition, leakage is avoided, steel bars on the two sides of the bearing structure are connected with the steel plates in a welded mode, and the steel bars are inserted into side walls, so that the bearing structure is more stable. A complete supporting and bearing structure is integrally formed, and the structural stability is high.

Description

Technical Field

[0001] The utility model belongs to the field of building construction, and particularly relates to a construction structure for butt jointing a variable-section exhaust duct at a floor slab. Background Art

[0002] The exhaust duct is a chimney installed in the kitchen or bathroom of a house to discharge smoke to the outside space. It is a non-metallic pipe product used to remove the oil smoke generated by cooking activities in the kitchen or the foul air in the bathroom. It is also called residential exhaust duct, residential ventilation duct, residential flue, etc.

[0003] According to the unloading requirements, unloading needs to be set up every three floors. The current unloading method is to set two steel bars or angle steels at the bottom of the exhaust duct on the floor and insert them into the wall. The exhaust duct is supported on the steel bars or angle steels, which has the disadvantages of weak support stability and easy leakage. In addition, as the number of floors increases and the number of users increases, the cross-section of the exhaust duct needs to be increased. Utility Model Content

[0004] The utility model provides a construction structure for butt jointing an exhaust duct with a variable cross-section at a floor slab, which is used to solve the technical problem that the current unloading method is to arrange two steel bars at the bottom end of the exhaust duct on the floor slab and insert them into the wall, and the exhaust duct is supported on the steel bars, which has the disadvantages of weak support stability and easy leakage.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a variable-section exhaust duct docking construction structure at a floor slab, comprising side walls, a floor slab, a lower exhaust duct and an upper exhaust duct, a hole for passing the lower exhaust duct is opened at a position of the floor slab near the side wall, the side length of the upper exhaust duct is greater than the side length of the lower exhaust duct and the lower exhaust duct and the upper exhaust duct are flush on the side near the side wall, a load-relief connector is provided at the bottom end of the upper exhaust duct, the unloading connector comprises two steel bars and a bearing tray, the bearing tray is composed of a square ring-shaped steel plate, the inner and outer sides of which are both flanged upwards, the inner and outer flanges form grooves, the grooves correspond to the upper exhaust duct, the four sides of the upper exhaust duct are respectively located in the grooves of the four sides of the bearing tray, two steel bars are welded in parallel to the outer surface of the bearing tray, two embedded holes corresponding to the bottom end of the lower exhaust duct and to the steel bars are chiseled on the side wall, one end of the steel bar is respectively inserted into the embedded holes, and the other end of the steel bar is placed on the floor slab.

[0006] By adopting the above-mentioned technical scheme, the present application adopts a new type of supporting structure for the joint construction of variable-section exhaust ducts. The middle part of the supporting structure is made of a square ring-shaped steel plate and the inner and outer sides are doubled upwards to form a fully enclosed protection. The upper exhaust duct remains in the groove even when it vibrates and will not leak. The steel bars on both sides of the supporting structure are welded to the steel plates and the steel bars are inserted into the side walls to form a complete supporting and bearing structure as a whole with high structural stability.

[0007] Preferably, the thickness of the steel plate of the supporting tray is 2 mm.

[0008] By adopting the above technical solution, the size is reasonable, the production is convenient, and the cost performance is high.

[0009] Preferably, the width of the groove is 4 mm greater than the wall thickness of the upper exhaust passage.

[0010] By adopting the above technical solution, a movable vibration offset space can be provided, the structure will not be damaged by vibration, and the service life of the structure is long.

[0011] Preferably, the depth of the groove is 14 mm.

[0012] By adopting the above technical solution, the structure has high strength and good anti-leakage performance.

[0013] Preferably, cement mortar grouting is provided between the lower exhaust duct and the upper exhaust duct and the side wall respectively.

[0014] By adopting the above technical solution, the sealing effect is good.

[0015] Preferably, a concrete enclosure is provided on the floor slab and is located on the outer side of the upper exhaust duct, and a 1.2 mm thick waterproof coating, a 1.2 mm thick waterproof coating film and a cement mortar protective layer are provided on the top surface of the floor slab, the concrete enclosure and the upper exhaust duct in sequence.

[0016] By adopting the above technical solution, a better waterproof effect is achieved, the exhaust duct is prevented from contacting the ground water in the kitchen or bathroom, and the service life is long.

[0017] The beneficial effects of the present utility model are as follows: the present application aims at the joint construction of variable-section exhaust ducts, and adopts a new type of supporting structure. The middle part of the supporting structure is made of a square ring-shaped steel plate, and the inner and outer sides are doubled upwards to form a fully surrounded protection. The upper exhaust duct remains in the groove even when it vibrates and will not leak. The steel bars on both sides of the supporting structure are welded to the steel plates, and the steel bars are inserted into the side walls to form a complete supporting and bearing structure as a whole, and the structural stability is high.

[0018] Other features and advantages of the utility model will be described in the subsequent description, and in part will become apparent from the description, or be understood by implementing the utility model; the main purpose and other advantages of the utility model can be realized and obtained through the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall construction structure of an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a load-releasing connector according to an embodiment of the utility model.

[0021] Figure numerals: 1. side wall; 2. floor slab; 3. lower exhaust duct; 4. upper exhaust duct; 5. load-relief connector; 6. steel bar; 7. support tray; 8. groove; 9. cement mortar grouting; 10. concrete enclosure; 11. waterproof coating; 12. waterproof coating; 13. cement mortar protective layer. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is described in detail below through embodiments. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be interpreted as limiting the technical solution of the present invention.

[0023] Combination Figure 1 and Figure 2 , a variable-section exhaust duct docking construction structure at a floor slab, comprising a side wall 1, a floor slab 2, a lower exhaust duct 3 and an upper exhaust duct 4. The floor slab 2 is provided with a hole for passing the lower exhaust duct near the side wall 1. The side length of the upper exhaust duct 4 is greater than the side length of the lower exhaust duct and the lower exhaust duct and the upper exhaust duct 4 are flush on the side near the side wall 1. A load-relief connector 5 is provided at the bottom of the upper exhaust duct 4. The load-relief connector 5 includes two steel bars 6 and a bearing tray 7. The bearing tray 7 is composed of a square ring-shaped steel plate, the inner and outer sides of which are both turned up, and the inner and outer turns form a groove 8. The groove 8 corresponds to the upper exhaust duct 4. The four sides of the upper exhaust duct 4 are respectively located in the grooves 8 of the four sides of the bearing tray 7. Two steel bars 6 are welded in parallel on the outer surface of the bearing tray 7. Two embedded holes corresponding to the bottom end of the lower exhaust duct and corresponding to the steel bars 6 are chiseled on the side wall 1. One end of the steel bar 6 is respectively inserted into the embedded holes, and the other end of the steel bar 6 is placed on the floor slab 2.

[0024] The present application aims at the construction of the joint connection of the variable-section exhaust ducts, and adopts a new type of supporting structure. The middle part of the supporting structure is made of a square ring-shaped steel plate, and the inner and outer sides are doubled upwards to form a fully enclosed protection. The upper exhaust duct 4 remains in the groove 8 even when it vibrates and will not leak. The steel bars 6 on both sides of the supporting structure are welded to the steel plate, and the steel bars 6 are inserted into the side wall 1, forming a complete supporting and bearing structure as a whole, and the structural stability is high.

[0025] The thickness of the steel plate of the tray 7 is 2 mm, which is of reasonable size, convenient to manufacture, and cost-effective. The width of the groove 8 is 4 mm thicker than the wall thickness of the upper exhaust duct 4, which can have a movable vibration offset space, will not be damaged by vibration, and has a long service life of the structure.

[0026] The depth of the groove 8 is 14 mm, the structural strength is high, and the anti-leakage performance is good. Cement mortar grouting 9 is arranged between the lower exhaust duct 3 and the upper exhaust duct 4 and the side wall 1 respectively, and the sealing effect is good.

[0027] A concrete enclosure 10 is provided on the floor 2 and is located on the outer side of the upper exhaust duct 4. A 1.2 mm thick waterproof coating 11, a 1.2 mm thick waterproof coating film 12 and a cement mortar protective layer 13 are provided on the top surface of the floor 2, the concrete enclosure 10 and the upper exhaust duct 4 in sequence, which have good waterproof effect, prevent the exhaust duct from contacting the ground water in the kitchen or bathroom, and have a long service life.

[0028] The above description is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a technician familiar with the technical field thinks of within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A construction structure for connecting a variable-section exhaust duct at a floor, characterized in that: The invention comprises a side wall (1), a floor slab (2), a lower exhaust duct (3) and an upper exhaust duct (4); a hole for passing the lower exhaust duct is opened at a position of the floor slab (2) close to the side wall (1); the side length of the upper exhaust duct (4) is greater than the side length of the lower exhaust duct, and the lower exhaust duct and the upper exhaust duct (4) are flush on a side close to the side wall (1); a load-releasing connector (5) is arranged at the bottom end of the upper exhaust duct (4); the load-releasing connector (5) comprises two steel bars (6) and a bearing tray (7); the bearing tray (7) is composed of a square ring The inner and outer sides of the steel plate are both turned up, and the inner and outer turns form a groove (8), which corresponds to the upper exhaust duct (4). The four sides of the upper exhaust duct (4) are respectively located in the grooves (8) of the four sides of the support tray (7). Two steel bars (6) are welded in parallel to the outer surface of the support tray (7). Two embedded holes corresponding to the bottom end of the lower exhaust duct and the steel bars (6) are chiseled on the side wall (1). One end of the steel bar (6) is inserted into the embedded hole, and the other end of the steel bar (6) is placed on the floor slab (2).

2. A variable-section exhaust duct joint construction structure at a floor slab according to claim 1, characterized in that: The thickness of the steel plate of the supporting tray (7) is 2 mm.

3. A variable-section exhaust duct joint construction structure at a floor slab according to claim 2, characterized in that: The width of the groove (8) is 4 mm greater than the wall thickness of the upper exhaust passage (4).

4. The variable-section exhaust duct joint construction structure at the floor slab according to claim 3 is characterized by: The depth of the groove (8) is 14 mm.

5. The variable-section exhaust duct joint construction structure at the floor slab according to claim 4, characterized in that: Cement mortar grouting (9) is provided between the lower exhaust duct (3) and the upper exhaust duct (4) and the side wall (1) respectively.

6. The variable-section exhaust duct joint construction structure at the floor slab according to claim 5, characterized in that: The floor slab (2) is provided with a concrete enclosure (10) located on the outer side of the upper exhaust duct (4), and a 1.2 mm thick waterproof coating (11), a 1.2 mm thick waterproof coating film (12), and a cement mortar protective layer (13) are sequentially provided on the top surface of the floor slab (2), the concrete enclosure (10), and the upper exhaust duct (4).

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