Deformation joint node for air pipe penetrating through firewall

Abstract

The utility model discloses an air pipe penetrating firewall deformation joint node which comprises two firewalls arranged in a spaced mode, a deformation joint is arranged between the two firewalls, holes matched with an air pipe are formed in the firewalls, the air pipe penetrates through the holes, a sleeve is arranged in the holes, and two blocking pieces are arranged on the air pipe in a spaced mode. A fireproof layer is arranged on the outer side of the air pipe and located between the two blocking pieces, and a waterproof layer is arranged on the outer side of the fireproof layer. The air pipe is hung on 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 has high fireproof capacity, can block fire transmission on the two sides of the firewall, and is simple and compact in structure, convenient to install and construct, high in connection stability, free of influence on the deformation capacity of the deformation joint, long in service life and worthy of application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of air duct construction in building engineering, and particularly relates to a node of an air duct passing through a fire wall deformation joint. Background Technique

[0002] In the installation construction of air ducts in building engineering, air ducts often pass through fire walls or partition walls with deformation joints. In the existing construction, the air ducts are usually directly installed in the wall openings after being wrapped with fireproof rock wool and waterproof layers on the outer side of the air ducts, and then hoisted with suspenders. This method is relatively simple, but due to insufficient consideration of displacement compensation at the deformation joints, unreasonable setting of fixed brackets, or inadequate sealing treatment, etc., the air ducts are prone to damage during building deformation, affecting the stability and sealing performance of the air duct passing through the deformation joint structure, and even causing safety accidents. The utility model patent with the authorization announcement number of CN204785108U discloses a connecting device for an air duct passing through a wall with a deformation joint. The connecting device further includes a hanging bracket, a left sleeve, a right sleeve, an air duct section, a waterproof layer, and a flexible connecting pipe. The left and right sleeves are respectively horizontally buried in the left and right walls, the air duct section is inserted into the left and right sleeves, and the left and right end sections of the air duct section respectively extend out of the left and right walls. Hanging brackets are respectively fixedly installed on the outer side walls of the left and right walls to fix the air duct section on the left and right walls. A waterproof layer is arranged between the left and right sleeves and the air duct section. Flexible connecting pipes are respectively installed on the left and right end sections of the air duct section extending out of the left and right walls, and the left and right flexible connecting pipes are respectively connected corresponding to the left and right pipe orifices of the disconnected air duct. The installation is convenient and improves the installation quality of the air duct, but the fireproof ability of this device is poor. Content 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 deformation joint. This node has strong fireproof ability, can block the spread of fire on both sides of the fire wall, has a simple and compact structure, is convenient for installation construction, has strong connection stability, does not affect the deformation ability of the deformation joint, has a high service life, and is worthy of popularization and application.

[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 deformation joint includes two fire walls arranged at intervals. There is a deformation joint between the two fire walls. An opening adapted to the air duct is arranged on the fire wall, and the air duct passes through the opening. A sleeve is arranged in the opening. Two blocking members are arranged at intervals on the air duct. A fireproof layer is arranged on the outer side of the air duct and between the two blocking members. A waterproof layer is arranged on the outer side of the fireproof layer. The air duct is hoisted on the floor by a shock-absorbing hanging bracket. An incombustible flexible hose is arranged on the outer side of the air duct. One end of the incombustible flexible hose is connected to the fire wall through fireproof putty, and the other end of the incombustible flexible hose is connected to the air duct through fireproof putty.

[0006] Preferably, both ends of the waterproof layer are located outside the two blocking members.

[0007] Preferably, an arc transition portion is provided on the outer side of the end portion of the blocking member.

[0008] Preferably, the external dimension of the blocking member is not greater than the dimension of the opening.

[0009] Preferably, a fire damper is provided respectively on the outer sides of the two firewalls within the air duct.

[0010] Preferably, the shock-absorbing hanger includes a hanging member fixedly connected to the floor slab, a suspension rod fixedly installed at the bottom of the hanging member, and a connecting member fixedly installed on the air duct, and 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 hanging member.

[0011] Preferably, the suspension rod passes through the non-combustible flexible hose.

[0012] Preferably, the thickness of the fireproof layer is not less than 50 mm.

[0013] In the present utility model, the casing provided in the opening wraps the rough surface of the opening, facilitating the installation and disassembly of the air duct, not affecting the deformation ability of the deformation joint, preventing the rough surface of the opening from damaging the waterproof layer, ensuring the waterproof ability, and improving its service life. The provided shock-absorbing hanger can shock-absorb the air duct, reducing structural damage or noise generated by vibration during use, and ensuring the structural strength and reliability. The provided blocking member facilitates the fixing and limiting of the fireproof layer, simplifies the on-site construction difficulty, and both ends of the waterproof layer are located outside the blocking member, enabling the water generated at the deformation joint to drain outwards, avoiding water accumulation causing structural corrosion and decay, improving the service life of the structure, and the arc transition portion of the blocking member avoids damaging the waterproof layer. 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, and the two provided fire dampers can block the transmission of fire in the air duct, achieving dual internal and external synchronous fire prevention. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] In the figure: 1, firewall; 2, deformation joint; 3, air duct; 4, fire damper; 5, casing; 6, blocking member; 7, fireproof layer; 8, waterproof layer; 9, shock-absorbing hanger; 10, non-combustible flexible hose; 90, hanging member; 91, suspension rod; 92, connecting member; 93, shock-absorbing pad. Detailed Embodiments

[0016] The following will further describe the present utility model in conjunction with the drawings:

[0017] As shown Figure 1 in the figure, a duct passing through a firewall deformation joint node includes two firewalls 1 arranged at intervals. There is a deformation joint 2 between the two firewalls 1. An opening adapted to the duct 3 is provided on the firewall 1, and the duct 3 passes through the opening. Inside the duct 3, on the outer sides of the two firewalls 1, a fire damper 4 is respectively arranged. The two fire dampers 4 can be independently controlled to open and close and are used to prevent the spread of fire on both sides of the firewall 1, having good fire prevention ability. The firewall 1 is integrally arranged at the bottom of the floor slab.

[0018] A sleeve 5 is arranged in the opening. The sleeve 5 is made of a 2-mm-thick steel plate. The sleeve 5 wraps the opening and can prevent the rough surface of the opening from damaging the duct 3 and related structures. The openings of the two firewalls 1 are separately wrapped, without affecting the deformation ability of the deformation joint 2. A flange is integrally arranged on the outer circumference of the sleeve 5, and this flange is attached to the outer side of the firewall 1.

[0019] Two blocking members 6 are arranged at intervals on the outer wall of the duct 3. The external dimension of the blocking member 6 is not greater than the dimension of the opening. The distance between the two blocking members 6 is adapted to the depth of the opening. An arc transition part is arranged on the outer side of the end of the blocking member 6, and this arc transition part can avoid scratching the structure or the operator.

[0020] A fireproof layer 7 is arranged on the outer side of the duct 3, between the two blocking members 6. The fireproof layer 7 is made of fireproof rock wool. The thickness of the fireproof layer 7 is not less than 50 mm. A waterproof layer 8 is arranged on the outer side of the fireproof layer 7. The waterproof layer 8 is a 1.5-mm-thick waterproof film made of polyurethane material. The two ends of the waterproof layer 8 are located on the outer sides of the two blocking members 6, facilitating drainage.

[0021] The duct 3 is hoisted at the bottom of the floor slab through a shock-absorbing hanger 9. The shock-absorbing hanger 9 includes a hanging member 90 fixedly connected to the bottom of the floor slab, a suspension rod 91 fixedly installed at the bottom of the hanging member 90 through a nut, and a connecting member 92 fixedly installed on the outer side of the duct 3. The bottom of the suspension rod 91 is fixedly connected to the connecting member 92 through a nut; a shock-absorbing pad 93 is arranged between the suspension rod 91 and the hanging member 90. The shock-absorbing pad 93 can absorb the vibration of the duct 3 during operation and has good shock-absorbing ability. The shock-absorbing pad 93 is selected as a metal shock-absorbing pad.

[0022] A non-combustible flexible hose 10 is arranged on the outer side of the duct 3. One end of the non-combustible flexible hose 10 is connected to the outer wall of the firewall 1 through fireproof putty, and the other end of the non-combustible flexible hose 10 is connected to the duct 3 through fireproof putty. The length of the non-combustible flexible hose 10 is not less than 2 m, and the fire resistance limit of the non-combustible flexible hose 10 is the same as that of the firewall 1. The bottom end of the suspension rod 91 passes through the non-combustible flexible hose 10.

[0023] The above embodiments are only several descriptions of the concept and implementation of the present utility model, and do not limit it. Under the concept of the present utility model, technical solutions without substantial transformation are still within the protection scope.

Claims

1. A deformation joint node for a duct passing through a fire wall, comprising two fire walls arranged at intervals, a deformation joint between the two fire walls, a hole adapted to the duct being arranged on the fire wall, the duct passing through the hole, characterized in that: A sleeve is arranged in the hole, two blocking members are arranged at intervals on the air duct, a fireproof layer is arranged on the outside of the air duct and between the two blocking members, and a waterproof layer is arranged on the outside of the fireproof layer; the air duct is suspended on the floor slab through a shock-absorbing hanger; 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 deformation joint node of the air duct passing through the fire wall according to claim 1 is characterized in that: The two ends of the waterproof layer are located outside the two blocking members.

3. The deformation joint node of the air duct passing through the fire wall according to claim 1 is characterized in that: An arc transition portion is arranged outside the end portion of the blocking member.

4. The deformation joint node of the air duct passing through the fire wall according to claim 1 or 3, characterized in that: The outer dimension of the blocking member is not larger than the dimension of the hole.

5. The deformation joint node of the air duct passing through the fire wall according to claim 1 is characterized in that: A fire damper is arranged in the air duct and outside the two fire walls respectively.

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

7. The deformation joint node of the air duct passing through the fire wall according to claim 6 is characterized in that: The suspension rod passes through the non-flammable flexible hose.

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

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