Connecting piece for assembling smoke exhaust air pipe

Abstract

The utility model discloses a connecting piece for assembling a smoke exhaust air duct, which belongs to the technical field of smoke exhaust air duct installation, and comprises a smoke exhaust air duct body, one end of the smoke exhaust air duct body is fixedly connected with a butt joint boss, and the other end of the smoke exhaust air duct body is fixedly connected with a connecting piece. A butt joint inserting groove corresponding to the butt joint boss is formed in the other end of the smoke exhaust air pipe body, and a connecting frame of a C-shaped structure is welded to the outer wall of the end, close to the butt joint inserting groove, of the smoke exhaust air pipe body. A mounting frame which corresponds to the connecting frame and is of a C-shaped structure is welded to the outer wall of the end, close to the butt joint boss, of the smoke exhaust air pipe body, and a guide column is welded to the inner side of the mounting frame. Therefore, the bending portions of the clamping jaws are clamped with the edge portions of the ends of the connecting frames, then butt joint of the smoke exhaust air pipe bodies is completed, operation is easy and convenient, installation can be fast, and the connecting efficiency of the smoke exhaust air pipe bodies is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke exhaust duct installation, and more specifically, to a connecting piece for assembling a smoke exhaust duct. Background Technique

[0002] The smoke exhaust duct is a general term for the air duct of the mechanical pressurized air supply and smoke prevention system and the mechanical smoke exhaust system air duct that crosses the fire compartment set in the building according to the design specifications. The main purpose of the smoke exhaust duct is to exhaust smoke, prevent harmful substances from being generated during the operation of equipment and facilities, collect the harmful substances through an exhaust fan and send them through a pipeline to a purification device for treatment to meet the emission or reuse standards. The design and installation of the smoke exhaust duct must comply with relevant standards and specifications to ensure its normal operation. Especially in case of emergencies such as fires, the smoke exhaust duct can quickly exhaust the smoke outside the building, reduce the indoor smoke concentration, and protect the lives of personnel.

[0003] The patent authorization number CN217714162U discloses a smoke prevention and exhaust duct and a smoke prevention and exhaust duct system, including a pipe body, a flange and a heat insulation gasket. The pipe body includes a housing, the flange is fixed to the housing, a first fireproof sealing layer is arranged between the flange and the housing, the flange is located at the end of the pipe body, the heat insulation gasket is arranged on the end face of the pipe body, and the heat insulation gasket extends to the flange and covers at least a part of the flange. The purpose of this application is to provide a smoke prevention and exhaust duct and a smoke prevention and exhaust duct system for the problem that the flange of the existing smoke prevention and exhaust composite duct is difficult to meet the fire resistance limit test of high-temperature flue gas above 300 degrees, which brings potential safety hazards to the safe use of the smoke prevention and exhaust composite duct system.

[0004] However, when connecting the smoke exhaust ducts in the patent authorization number CN217714162U, it is necessary to use a flange and bolts to connect multiple sections of pipes together. Since each section of the air duct requires multiple bolts for connection and fixation. Not only is the operation cumbersome, but also the efficiency of assembling and connecting the air ducts is reduced. Therefore, we propose a connecting piece for assembling a smoke exhaust duct to solve the above problems. Content of the Utility Model

[0005] 1. Technical Problem to be Solved

[0006] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a connecting piece for assembling a smoke exhaust duct. It uses the elastic force of the spring to make the claw move in the reverse direction, so that the bent part of the claw is engaged with the edge part of the end of the connecting frame, and then the butt joint between the smoke exhaust duct bodies is completed. The operation is simple, the installation can be carried out quickly, and the connection efficiency between the smoke exhaust duct bodies is improved.

[0007] 2. Technical Solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A connecting piece for assembling a smoke exhaust air duct, comprising a smoke exhaust air duct body, one end of the smoke exhaust air duct body is fixedly connected with a docking boss, and the other end of the smoke exhaust air duct body is provided with a docking slot corresponding to the docking boss;

[0010] A connecting frame arranged in a C-shaped structure is welded to the outer wall of the smoke exhaust air duct body near the docking slot;

[0011] An installation frame corresponding to the connecting frame and arranged in a C-shaped structure is welded to the outer wall of the smoke exhaust air duct body near the docking boss. A guide post is welded to the inner side of the installation frame. The two ends of the guide post are symmetrically and slidably connected with a claw arranged in an L-shaped structure. A spring sleeved on the guide post is arranged between the claws. The front end of the claw is provided with an inclined surface, and a guide head is welded to the upper surface of the end of the claw;

[0012] A guide hole is opened at the top end of the connecting frame, and the guide head extends to the inside of the guide hole.

[0013] Further, a sealing rubber ring is inlaid on the outer wall of the docking boss, and the sealing rubber ring is attached to the inner wall of the docking slot.

[0014] Further, the docking boss and the docking slot form an embedded structure.

[0015] Further, the two ends of the spring respectively abut against the side walls of the symmetrically arranged claws.

[0016] Further, a through hole is opened at the part where the claw is combined with the guide post, and the inner diameter of the through hole is adapted to the outer diameter of the guide post.

[0017] Further, the guide hole is arranged in a linear structure, and the guide hole and the guide head are in clearance fit.

[0018] Further, the bent part of the end of the claw is engaged with the edge part of the end of the connecting frame.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of the present utility model are as follows:

[0021] (1) In this solution, the docking boss is inserted into the inner side of the docking slot. During this process, the inclined surface provided at the end of the claw abuts against the edge part of the end of the connecting frame. While the guiding stud head cooperates with the guiding hole to slide, the claws cooperate with the guide posts to move towards each other, and the spring sleeved on the guide posts is compressed and deformed. After the docking boss is completely embedded into the inner side of the docking slot, the end part of the claw passes through the connecting frame, and then the elastic force of the spring is used to make the claw move in the reverse direction, so that the bent part of the claw is engaged with the edge part of the end of the connecting frame, thus completing the docking between the smoke exhaust duct bodies. The operation is simple, the installation can be carried out quickly, and the connection efficiency between the smoke exhaust duct bodies is improved.

[0022] (2) In this solution, the sealing rubber ring is used to fill the gap at the joint between the docking boss and the docking slot, so as to prevent the smoke from leaking from the gap at the docking part of the smoke exhaust duct body and ensure the smoke exhaust effect. Brief Description of the Drawings

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0024] Figure 2 is a structural schematic diagram of the smoke exhaust duct body of the present utility model;

[0025] Figure 3 is a structural schematic diagram of the smoke exhaust duct body of the present utility model from another perspective;

[0026] Figure 4 is a structural schematic diagram of the mounting bracket of the present utility model.

[0027] Description of the reference numerals in the drawings:

[0028] 1. Smoke exhaust duct body; 2. Docking boss; 3. Docking slot; 4. Sealing rubber ring; 5. Connecting frame; 6. Mounting bracket; 7. Guide post; 8. Spring; 9. Claw; 10. Inclined surface; 11. Guiding stud head; 12. Guiding hole. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model; obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0030] Embodiment:

[0031] Please refer to Figures 1-4, A connecting piece for assembling a smoke exhaust air duct, including a smoke exhaust air duct body 1. One end of the smoke exhaust air duct body 1 is fixedly connected with a docking boss 2, and the other end of the smoke exhaust air duct body 1 is provided with a docking slot 3 corresponding to the docking boss 2;

[0032] At the outer wall part of one end of the smoke exhaust air duct body 1 close to the docking slot 3, a connecting frame 5 arranged in a C-shaped structure is welded;

[0033] At the outer wall part of one end of the smoke exhaust air duct body 1 close to the docking boss 2, an installation frame 6 corresponding to the connecting frame 5 and arranged in a C-shaped structure is welded. A guide post 7 is welded inside the installation frame 6. At both ends of the guide post 7, L-shaped claws 9 are symmetrically slidably connected. A spring 8 sleeved on the guide post 7 is arranged between the claws 9. The front end of the claw 9 is provided with an inclined surface 10, and a guide head 11 is welded on the upper surface of the end of the claw 9;

[0034] A guide hole 12 is opened at the top end of the connecting frame 5, and the guide head 11 extends to the inside of the guide hole 12;

[0035] It should be noted that when this connecting piece for assembling a smoke exhaust air duct is in use, when docking two adjacent smoke exhaust air duct bodies 1, the docking boss 2 is inserted into the inside of the docking slot 3. During this process, the inclined surface 10 arranged at the end of the claw 9 abuts against the edge part of the end of the connecting frame 5. While the guide head 11 cooperates with the guide hole 12 to slide, the claws 9 move towards each other in cooperation with the guide post 7, and the spring 8 sleeved on the guide post 7 is compressed and deformed. After the docking boss 2 is completely embedded into the inside of the docking slot 3, the end part of the claw 9 passes through the connecting frame 5, and then the elastic force of the spring 8 is used to make the claw 9 move in the reverse direction, so that the bent part of the claw 9 is engaged with the edge part of the end of the connecting frame 5, thereby completing the docking between the smoke exhaust air duct bodies 1. The operation is simple, the installation can be carried out quickly, and the connection efficiency between the smoke exhaust air duct bodies 1 is improved.

[0036] As Figure 2 、 Figure 3 shown, a sealing rubber ring 4 is inlaid on the outer wall of the docking boss 2, and the sealing rubber ring 4 is in contact with the inner wall of the docking slot 3. The docking boss 2 and the docking slot 3 form an embedded structure;

[0037] It should be noted that the sealing rubber ring 4 is used to fill the gap at the joint between the docking boss 2 and the docking slot 3, so as to prevent smoke from leaking from the gap at the docking part of the smoke exhaust air duct body 1 and ensure the smoke exhaust effect.

[0038] As Figure 1 、 Figure 4As shown, both ends of the spring 8 are respectively abutted against the side walls of the symmetrically arranged claws 9. A through hole is provided at the combined part of the claw 9 and the guide post 7, and the inner diameter of the through hole is adapted to the outer diameter of the guide post 7. The guide hole 12 is arranged in a linear structure, and the guide hole 12 is in clearance fit with the guide head 11. The bent part of the end of the claw 9 is engaged with the edge part of the end of the connecting frame 5;

[0039] It should be noted that the elastic force of the spring 8 is used to guide the claw 9 during movement by means of the guide post 7. At the same time, the guide head 11 slides inside the guide hole 12 to prevent the claw 9 from flipping, and to ensure the stability of the claw 9 during movement, so as to ensure that the claw 9 can be normally engaged and connected with the connecting frame 5.

[0040] During use: when docking two adjacent sections of the smoke exhaust duct body 1, the docking boss 2 is inserted into the inner side of the docking slot 3. During this process, the inclined surface 10 provided at the end of the claw 9 abuts against the edge part of the end of the connecting frame 5. While the guide head 11 cooperates with the guide hole 12 to slide, the claw 9 moves towards each other in cooperation with the guide post 7, and the spring 8 sleeved on the guide post 7 is compressed and deformed. After the docking boss 2 is completely embedded into the inner side of the docking slot 3, the end part of the claw 9 passes through the connecting frame 5, and then the elastic force of the spring 8 is used to make the claw 9 move in the reverse direction, so that the bent part of the claw 9 is engaged with the edge part of the end of the connecting frame 5.

[0041] The above is only the preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improvement concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A connector for assembling a smoke exhaust duct, comprising a smoke exhaust duct body (1), characterized in that: One end of the smoke exhaust duct body (1) is fixedly connected to a docking boss (2), and the other end of the smoke exhaust duct body (1) is provided with a docking slot (3) corresponding to the docking boss (2); A connecting frame (5) having a C-shaped structure is welded on the outer wall of one end of the smoke exhaust duct body (1) close to the docking slot (3); A mounting frame (6) corresponding to the connecting frame (5) and arranged in a C-shaped structure is welded to the outer wall of one end of the smoke exhaust duct body (1) close to the docking boss (2); a guide column (7) is welded to the inner side of the mounting frame (6); claws (9) arranged in an L-shaped structure are symmetrically slidably connected at both ends of the guide column (7); a spring (8) sleeved on the guide column (7) is arranged between the claws (9); a slope (10) is arranged at the front end of the claw (9); and a guide column head (11) is welded to the upper surface of the end of the claw (9); A guide hole (12) is provided at the top end of the connecting frame (5), and the guide column head (11) extends to the inner side of the guide hole (12).

2. A smoke exhaust duct assembly connector according to claim 1, characterized in that: The outer wall of the docking boss (2) is inlaid with a sealing rubber ring (4), and the sealing rubber ring (4) fits the inner wall of the docking slot (3).

3. The smoke exhaust duct assembly connector according to claim 1, characterized in that: The docking boss (2) and the docking slot (3) form an embedded structure.

4. The smoke exhaust duct assembly connector according to claim 1, characterized in that: The two ends of the spring (8) are respectively in contact with the side walls of the symmetrically arranged claws (9).

5. The smoke exhaust duct assembly connector according to claim 1, characterized in that: A through hole is provided at the portion where the clamping claw (9) is combined with the guide column (7), and the inner diameter of the through hole is matched with the outer diameter of the guide column (7).

6. The smoke exhaust duct assembly connector according to claim 1, characterized in that: The guide hole (12) is arranged in a straight line structure, and the guide hole (12) and the guide column head (11) are clearance-matched.

7. The smoke exhaust duct assembly connector according to claim 1, characterized in that: The bent portion of the end of the clamping claw (9) is engaged with the edge portion of the end of the connecting frame (5).

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