Detachable flange connection fireproof metal ventilation duct

Abstract

The utility model belongs to the technical field of ventilation pipeline, disclose a kind of detachable flange connection fireproof metal ventilation pipeline, including ventilation pipe and connecting piece, the one end of ventilation pipe is fixedly provided with first connecting component, the one end of connecting piece is fixedly provided with second connecting component, first connecting component includes first flange, the outer periphery of first flange is equipped with multiple inclined grooves, the inside of inclined groove is rotatably connected with pawl by pivot, torsional spring for pawl automatic reset is arranged on pivot, second connecting component includes second flange, the second flange is provided with the clamping groove matched with pawl. The utility model avoids the cumbersome mode of relying on a large number of bolts fastening in traditional flange connection, simplifies installation and dismounting process, when needing to maintain or replace pipeline, operating personnel only need simple operation to realize quick disassembly and assembly, reduce maintenance difficulty and cost, improve work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation duct technology, specifically relating to a fireproof metal ventilation duct with a detachable flange connection. Background Technology

[0002] Fireproof ventilation ducts have a flame-retardant coating on the outside, giving them a certain degree of fire resistance. Ventilation ducts are mainly used for indoor and outdoor air circulation. To prevent outdoor dust from entering the room through the duct, dust filters are installed inside the duct.

[0003] Currently, most metal ventilation duct connections on the market use traditional flange connection technology, which involves tightly fixing two flanges together with bolts and adding gaskets at the connection to enhance sealing. However, traditional flange connections rely on a large number of bolts for fastening, which is not only cumbersome and time-consuming to install, but also time-consuming and laborious to disassemble when maintenance or replacement of the pipes is needed, greatly increasing the difficulty and cost of maintenance. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a fireproof metal ventilation duct with a detachable flange connection, which avoids the cumbersome method of relying on a large number of bolts for fastening in traditional flange connections, simplifies the installation and disassembly process, and allows operators to quickly disassemble and assemble the duct with simple operations when maintenance or replacement is required, thereby reducing maintenance difficulty and cost and improving work efficiency.

[0005] The technical solution of this utility model is: a detachable flange-connected fireproof metal ventilation duct, including a ventilation pipe and a connector, wherein a first connecting component is fixedly sleeved on one end of the ventilation pipe, and a second connecting component is fixedly sleeved on one end of the connector;

[0006] The first connecting assembly includes a first flange, the outer periphery of which is provided with a plurality of inclined grooves, and the interior of the inclined grooves is rotatably connected to a pawl via a rotating shaft, and the rotating shaft is provided with a torsion spring for automatic reset of the pawl;

[0007] The second connecting assembly includes a second flange, on which a groove is provided to cooperate with the claw, and a limit block is provided in the groove, and the claw engages with the limit block.

[0008] Preferably, one end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring is fixedly connected to the pawl.

[0009] Preferably, the middle part of both sides of the claw is provided with a receiving groove, and the torsion spring is located in the receiving groove.

[0010] Preferably, both ends of the outer surface of the rotating shaft are provided with through holes, and one end of the torsion spring is inserted into the through hole.

[0011] Preferably, the claw has a vertical groove, and the other end of the torsion spring is inserted into the vertical groove.

[0012] Preferably, a sealing ring is provided between the first connecting component and the second connecting component.

[0013] Preferably, sealing rings are fitted onto the opposing surfaces of both the first flange and the second flange.

[0014] Preferably, the outer surface of the ventilation duct is coated with a fire-retardant coating.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0016] 1. This detachable flange connection for fireproof metal ventilation ducts features a claw on the first connecting component, which works in conjunction with the slot and limit block on the second connecting component. Utilizing the automatic reset function of the torsion spring, the claw securely engages with the limit block within the slot. This avoids the cumbersome method of relying on numerous bolts for fastening in traditional flange connections, simplifying the installation and disassembly process. When maintenance or pipe replacement is required, operators can quickly disassemble and reassemble with simple operations, reducing maintenance difficulty and costs, and improving work efficiency.

[0017] 2. The detachable flange connects the fireproof metal ventilation duct. A sealing ring is set between the first connecting component and the second connecting component. At the same time, a sealing ring is embedded on the opposite face of the first flange and the second flange, forming a double sealing guarantee, which enhances the sealing performance of the pipe connection and prevents dust and other impurities from entering the pipe. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the ventilation pipe and the first connecting component in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the first connecting component in this utility model;

[0022] Figure 4 This is a partial structural diagram of the first connecting component in this utility model;

[0023] Figure 5 This is a schematic diagram of the rotating shaft, pawl, and torsion spring structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the connecting member and the second connecting assembly in this utility model.

[0025] In the attached image:

[0026] 1. Ventilation duct; 2. First connecting assembly; 21. First flange; 22. Inclined groove; 23. Rotating shaft; 24. Claw; 25. Torsion spring; 26. Sealing ring; 3. Sealing ring; 4. Connector; 5. Second connecting assembly; 51. Second flange; 52. Slot; 53. Limiting block. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or reference letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0030] like Figure 1 , Figure 2 and Figure 6 As shown, a detachable flange-connected fireproof metal ventilation duct includes a ventilation pipe 1 and a connector 4. The ventilation pipe 1 is a circular or rectangular structure. One end of the ventilation pipe 1 is fixedly fitted with a first connecting component 2. The connector 4 is a metal ventilation duct or a pipe system fitting. One end of the connector 4 is fixedly fitted with a second connecting component 5.

[0031] like Figures 3-5As shown, the first connecting assembly 2 includes a first flange 21. The outer periphery of the first flange 21 is provided with a plurality of inclined grooves 22. The inside of the inclined grooves 22 is rotatably connected to a pawl 24 via a rotating shaft 23. A torsion spring 25 for automatic reset of the pawl 24 is provided on the rotating shaft 23.

[0032] like Figure 6 As shown, the second connecting assembly 5 includes a second flange 51, on which a groove 52 is provided to cooperate with the claw 24. A limit block 53 is provided in the groove 52; the claw 24 is engaged with the limit block 53. The first connecting assembly 2 has a claw 24, which, in conjunction with the groove 52 and the limit block 53 on the second connecting assembly 5, utilizes the automatic reset function of the torsion spring 25 to ensure that the claw 24 is securely engaged with the limit block 53 in the groove 52. This avoids the cumbersome method of relying on a large number of bolts for fastening in traditional flange connections, simplifies the installation and disassembly process, and allows operators to quickly disassemble and assemble the pipes with simple operations when maintenance or replacement is required, reducing maintenance difficulty and cost, and improving work efficiency.

[0033] like Figure 4 As shown, one end of the torsion spring 25 is fixedly connected to the rotating shaft 23, and the other end of the torsion spring 25 is fixedly connected to the pawl 24. The pawl 24 has a receiving groove in the middle of both sides, and the torsion spring 25 is located within the receiving groove. The receiving groove provides installation space for the torsion spring 25, ensuring that the torsion spring 25 remains in a fixed position during operation and can stably perform its automatic reset function.

[0034] like Figure 5 As shown, both ends of the outer surface of the rotating shaft 23 have through holes, and one end of the torsion spring 25 is inserted into the through hole. The pawl 24 has a vertical groove, and the other end of the torsion spring 25 is inserted into the vertical groove. The through holes and vertical grooves provide installation positioning for the torsion spring 25, facilitating the installation and removal of the torsion spring 25, and preventing the torsion spring 25 from shifting or loosening during operation.

[0035] like Figures 1-4 As shown, a sealing ring 3, which is an aluminum silicate fiber composite gasket, is provided between the first connecting assembly 2 and the second connecting assembly 5. Sealing rings 26 are embedded in the opposing surfaces of the first flange 21 and the second flange 51. The sealing ring between the first connecting assembly 2 and the second connecting assembly 5, along with the sealing rings embedded in the opposing surfaces of the first flange 21 and the second flange 51, forms a double sealing guarantee, enhancing the sealing performance of the pipe connection and preventing dust and other impurities from entering the pipe.

[0036] Ventilation duct 1 is made of metal, and its outer surface is coated with a fire-retardant coating. When exposed to fire, the components in the fire-retardant coating undergo a chemical reaction to form a heat-insulating layer, which can effectively block flames and high temperatures.

[0037] During installation, the first connecting component 2 at one end of the ventilation pipe 1 is connected to the second connecting component 5 at one end of the connector 4, so that the claw 24 on the first flange 21 is inserted into the slot 52 of the second flange 51. During the insertion process, the bottom of the claw 24 slides on the top of the limiting block 53. The claw 24 is squeezed and rotated by the limiting block 53. After passing the limiting block 53, the torsion spring 25 returns to its original position, so that the claw 24 is locked on the limiting block 53, thus achieving a quick connection.

[0038] The sealing ring 3 between the first connecting assembly 2 and the second connecting assembly 5, and the sealing ring 26 on the opposite face of the first flange 21 and the second flange 51, form a double seal to prevent dust from entering.

[0039] During disassembly, simply press the claw 24 to disengage it from the limit block 53 to separate the ventilation pipe 1 from the connector 4. The operation is simple and reduces maintenance difficulty and cost.

[0040] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable flange-connected fireproof metal ventilation duct, comprising a ventilation duct (1) and a connector (4), characterized in that, One end of the ventilation pipe (1) is fixedly fitted with a first connecting component (2), and one end of the connector (4) is fixedly fitted with a second connecting component (5); The first connecting assembly (2) includes a first flange (21), and the outer periphery of the first flange (21) is provided with a plurality of inclined grooves (22). The interior of the inclined grooves (22) is rotatably connected to a claw (24) via a rotating shaft (23). A torsion spring (25) for automatic reset of the claw (24) is provided on the rotating shaft (23). The second connecting assembly (5) includes a second flange (51), on which a groove (52) is provided to cooperate with the claw (24), and a limit block (53) is provided in the groove (52), and the claw (24) is engaged with the limit block (53).

2. The detachable flange-connected fireproof metal ventilation duct as described in claim 1, characterized in that, One end of the torsion spring (25) is fixedly connected to the rotating shaft (23), and the other end of the torsion spring (25) is fixedly connected to the pawl (24).

3. The detachable flange-connected fireproof metal ventilation duct as described in claim 2, characterized in that, The claw (24) has a receiving groove in the middle of both sides, and the torsion spring (25) is located in the receiving groove.

4. The detachable flange-connected fireproof metal ventilation duct as described in claim 3, characterized in that, Both ends of the outer surface of the rotating shaft (23) are provided with through holes, and one end of the torsion spring (25) is inserted into the through hole.

5. The detachable flange-connected fireproof metal ventilation duct as described in claim 4, characterized in that, The claw (24) is provided with a vertical groove, and the other end of the torsion spring (25) is inserted into the vertical groove.

6. The detachable flange-connected fireproof metal ventilation duct as described in claim 1, characterized in that, A sealing ring (3) is provided between the first connecting component (2) and the second connecting component (5).

7. The detachable flange-connected fireproof metal ventilation duct as described in claim 1, characterized in that, Both the first flange (21) and the second flange (51) have sealing rings (26) fitted on their opposite faces.

8. The detachable flange-connected fireproof metal ventilation duct as described in claim 1, characterized in that, The outer surface of the ventilation duct (1) is coated with a fireproof coating.

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