Node for air pipe to penetrate through firewall

Abstract

The utility model discloses a node for an air pipe to penetrate through a firewall, which comprises the firewall, a through hole penetrating through two sides of the firewall is arranged on the firewall, the air pipe penetrates through the through hole, and a fireproof layer is arranged on the outer side of the air pipe and corresponds to the position of the through hole. A sleeve is arranged in the through hole, and the fireproof layer is located between the air pipe and the sleeve. A fixing ring is arranged on the air pipe, and the fixing ring is fixedly arranged on one side of the firewall; the air pipe is hung at the bottom of a floor through a damping hanging bracket, a non-combustible flexible hose is arranged on the outer side of the air pipe, one end of the non-combustible flexible hose is connected with the firewall through fireproof mud, and the other end of the non-combustible flexible hose is connected with the air pipe through fireproof mud. The joint can conduct fireproof sealing on the connecting position of the air pipe and the firewall, has the high fireproof capacity, is simple and compact in structure, convenient to construct and operate, high in structural stability after connection, has the certain damping capacity, and is long in service life and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of air duct construction through a wall, and particularly relates to a node of an air duct passing through a fire wall. Background Art

[0002] When the ventilation duct of a high-rise building passes through a fire wall during construction, it is necessary to fill fireproof flexible material on the outer side of the part where the air duct passes through the wall. This fireproof flexible material can not only play a fireproof role but also give the air duct a space for expansion and contraction; then, cement mortar is used to seal both sides of the fireproof flexible material along the length direction of the air duct. However, after the cement mortar is sealed, it restricts the free expansion space of the fireproof flexible material. When vibration occurs due to external factors, the air duct is easily damaged, affecting its service life. The utility model patent with the authorization announcement number CN221443583U discloses an air duct passing through a fire wall structure, including an air duct. The air duct includes a wall-piercing pipe. A hole larger than the wall-piercing pipe in size is provided on the wall to be pierced. The hole is filled with fireproof flexible material. A fixing ring is fixedly connected to the pipe section of the wall-piercing pipe on the side of the wall to be pierced, and the fixing ring is also fixedly connected to the wall to be pierced. Through the cooperation of filling fireproof flexible material and setting the fixing ring, it changes the situation that after filling fireproof flexible material outside the wall-piercing pipe and then sealing with cement mortar in the past. Fireproof flexible material is filled instead of cement mortar. The fixing ring plays a role in preventing the air duct from shaking, and the filling of flexible material plays a buffering and protecting role when the air duct shakes under pressure; however, the rough surface of the hole on the wall to be pierced in this structure will damage the fireproof flexible material, affecting the fireproof effect, and the installation resistance is large. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a node of an air duct passing through a fire wall. This node can conduct fireproof sealing at the connection between the air duct and the fire wall, has strong fireproof ability, simple and compact structure, is convenient for construction operations, has strong structural stability after connection, also has a certain shock-absorbing ability, high service life, and strong practicability.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A node of an air duct passing through a fire wall includes a fire wall. A through hole penetrating both sides of the fire wall is provided on the fire wall. The air duct passes through the through hole. A fireproof layer is provided on the outer side of the air duct at the position corresponding to the through hole; a sleeve is provided in the through hole, and the fireproof layer is located between the air duct and the sleeve; a fixing ring is provided on the air duct, and the fixing ring is fixedly arranged on one side of the fire wall; the air duct is hoisted under the floor slab through a shock-absorbing hanger. A non-combustible flexible hose is provided on the outer side of the air duct. One end of the non-combustible flexible hose is connected to the fire wall through fireproof putty, and the other end of the non-combustible flexible hose is connected to the air duct through fireproof putty.

[0006] Preferably, a flange is circumferentially provided on the outer side of the sleeve, and the flange is attached to the outer side of the firewall.

[0007] Preferably, a fire damper is provided inside the air duct on one side of the firewall.

[0008] Preferably, the shock-absorbing hanger includes a suspension member fixedly connected to the floor slab, a suspension rod fixedly installed at the bottom of the suspension member, and a connecting member fixedly installed on the air duct. The bottom of the suspension rod is fixedly connected to the connecting member; a shock-absorbing pad is provided between the suspension rod and the suspension member.

[0009] Preferably, the thickness of the fireproof layer is not less than 50 mm.

[0010] Preferably, the suspension rod passes through the non-combustible flexible hose.

[0011] In the present utility model, the sleeve provided in the through hole wraps the rough surface of the through hole, which is convenient for the installation and disassembly of the air duct and the installation of the fireproof layer, prevents the rough surface from damaging the fireproof layer, and ensures its effective fireproof ability; the flange on the outer side of the sleeve is convenient for fixing the sleeve and simplifies the installation process. The provided shock-absorbing hanger can shock-absorb the air duct, reduce the structural damage or noise generated by vibration during use, and ensure the structural strength and reliability. The provided blocking member is convenient for fixing and limiting the fireproof layer and simplifies the on-site construction difficulty. The provided non-combustible flexible hose can conduct fireproof treatment at the connection between the air duct and the firewall, further improving the fireproof ability. The provided fire damper can block the transmission of fire and thick smoke in the air duct, achieving dual internal and external synchronous fire prevention. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0013] In the figure: 1, firewall; 2, air duct; 3, fireproof layer; 4, fire damper; 5, sleeve; 6, fixing ring; 7, shock-absorbing hanger; 8, non-combustible flexible hose; 70, suspension member; 71, suspension rod; 72, connecting member; 73, shock-absorbing pad. Detailed Embodiments

[0014] The following will further describe the present utility model with reference to the drawings:

[0015] As Figure 1A duct passing through a firewall node as shown includes a firewall 1, and the firewall 1 is integrally provided at the bottom of the floor slab. A through hole penetrating both sides thereof is provided on the firewall 1, and a duct 2 passes through the through hole. In this embodiment, both the through hole and the duct 2 are rectangular in shape. A fireproof layer 3 is provided on the outer side of the duct 2 at the position corresponding to the through hole. The fireproof layer 3 is made of fireproof rock wool, and the thickness of the fireproof layer 3 is not less than 50 mm. In a preferred embodiment, a waterproof layer is wrapped on the outer side of the fireproof layer 3, and the waterproof layer is a 1.5 mm thick waterproof film made of polyurethane material. A fire damper 4 is provided inside the duct 2 on one side of the firewall 1. The fire damper 4 is used to prevent the spread of fire and thick smoke on both sides of the firewall 1 and improve the fireproof ability.

[0016] A sleeve 5 is fixedly provided in the through hole, and the fireproof layer 3 is located between the duct 2 and the sleeve 5. The sleeve 5 is made of a 2 mm thick steel plate. The sleeve 5 wraps the through hole, which can prevent the rough surface of the through hole from damaging the duct 2, the fireproof layer 3 and related structures. A flange is integrally provided on the outer circumference of the sleeve 5, and the flange is attached to the outer side of the firewall 1. A fixing ring 6 is fixedly provided on the outer wall of the duct 2, and the outer eaves of the fixing ring 6 are fixedly provided on one side of the firewall 1.

[0017] The duct 2 is hoisted at the bottom of the floor slab by a shock-absorbing hanger 7. The shock-absorbing hanger 7 includes a hanging member 70 fixedly connected to the bottom of the floor slab, a suspender 71 fixedly installed at the bottom of the hanging member 70 through a nut, and a connecting member 72 fixedly installed on the outer side of the duct 2. The bottom of the suspender 71 is fixedly connected to the connecting member 72 through a nut. A shock-absorbing pad 73 is provided between the suspender 71 and the hanging member 70. The shock-absorbing pad 73 can absorb the vibration of the duct 2 during operation and has good shock-absorbing ability. The shock-absorbing pad 73 is selected as a metal shock-absorbing pad.

[0018] A non-combustible flexible hose 8 is provided on the outer side of the duct 2. One end of the non-combustible flexible hose 8 is connected to the outer wall of the firewall 1 through fireproof putty, and the other end of the non-combustible flexible hose 8 is connected to the duct 2 through fireproof putty. The length of the non-combustible flexible hose 8 is not less than 2 m, and the fire resistance limit of the non-combustible flexible hose 8 is the same as that of the firewall 1. The bottom end of the suspender 71 passes through the non-combustible flexible hose 8.

[0019] The above embodiments are only several descriptions of the concept and implementation of the present invention, and do not limit it. Under the concept of the present invention, technical solutions without substantial transformation are still within the protection scope.

Claims

1. A duct-through-firewall node, comprising a fire wall, the fire wall being provided with through holes penetrating both sides thereof, the duct passing through the through holes, and a fireproof layer being provided on the outer side of the duct corresponding to the through hole position; characterized in that: A sleeve is arranged in the through hole, and the fireproof layer is located between the air duct and the sleeve; a fixing ring is arranged on the air duct, and the fixing ring is fixedly arranged on one side of the fire wall; the air duct is suspended at the bottom of the floor through a shock-absorbing hanger, and a non-combustible flexible hose is arranged on the outside of the air duct, one end of the non-combustible flexible hose is connected to the fire wall through fireproof mud, and the other end of the non-combustible flexible hose is connected to the air duct through fireproof mud.

2. The air duct through fire wall node according to claim 1, characterized in that: The outer circumference of the sleeve is provided with a flange, and the flange is attached to the outer side of the firewall.

3. The air duct through fire wall node according to claim 2, characterized in that: A fire damper is arranged in the air duct at one side of the fire wall.

4. The air duct through fire wall node according to claim 1 or 3, characterized in that: The shock-absorbing hanger includes a hanging piece fixedly connected to the floor, a hanging rod fixedly installed at the bottom of the hanging piece, and a connecting piece fixedly installed on the air duct, and the bottom of the hanging rod is fixedly connected to the connecting piece; a shock-absorbing pad is arranged between the hanging rod and the hanging piece.

5. The air duct through fire wall node according to claim 1, characterized in that: The thickness of the fireproof layer is not less than 50 mm.

6. The air duct through fire wall node according to claim 4, characterized in that: The suspension rod passes through the non-flammable flexible hose.

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