Fireproof check valve for flue

Abstract

The utility model relates to a flue fireproof check valve, and belongs to the technical field of flue check valves, the flue fireproof check valve comprises a valve body and a flow guide cover, one side, close to the flow guide cover, of the valve body is provided with a first flange, one side, close to the valve body, of the flow guide cover is provided with a second flange, the first flange is movably connected with one side of the second flange, and the second flange is movably connected with one side of the valve body. A connecting piece is arranged on the other side of the base, and the base is detachably connected through the connecting piece. During maintenance, the valve body is more convenient to disassemble and assemble; and meanwhile, the stability of the flow guide cover and the valve body after installation is improved.

Description

Technical Field

[0001] This application relates to the field of flue gas check valve technology, and in particular to a flue gas fireproof check valve. Background Technology

[0002] A flue fireproof check valve automatically opens and closes based on the force generated by the flow of the air medium within the flue, thus allowing for unidirectional release of smoke. The flue fireproof check valve consists of a valve body and a flow guide hood. The flow guide hood is fixedly installed on the flue and connected to the inside of the flue. The valve body and the flow guide hood are detachably connected, functioning as a one-way valve to control and prevent backflow of smoke.

[0003] In related technologies, the valve body is fixedly connected to the flow guide cover by four bolts on each of its four sides. However, when the valve body malfunctions and needs to be disassembled and repaired, the staff needs to use tools to remove the four bolts and then remove the valve body from the flow guide cover. After the repair is completed, the four bolts are used to connect the valve body and the flow guide cover, which makes the disassembly and assembly of the valve body during the repair process quite inconvenient. Utility Model Content

[0004] To facilitate easier disassembly and assembly of the valve body during maintenance, this application provides a flue fireproof check valve.

[0005] This application provides a flue fireproof check valve, which adopts the following technical solution:

[0006] A flue fireproof check valve includes a valve body and a flow guide. The valve body has a first flange on the side near the flow guide, and the flow guide has a second flange on the side near the valve body. The first flange and the second flange are movably connected on one side, and a connector is provided on the other side and can be detachably connected through the connector.

[0007] Optionally, the first flange is provided with a raised edge, the raised edge extending towards the side closer to the second flange, and the raised edge is provided with a hook for hanging on the second flange.

[0008] Optionally, there is a certain amount of movable gap between the second flange and the hook, as well as between the first flange and the second flange.

[0009] Optionally, multiple hooks are provided, and the multiple hooks are arranged at intervals on the convex edge.

[0010] Optionally, the protruding edge is annular, and the second flange is located inside the protruding edge.

[0011] Optionally, the connector includes a connecting bolt, and the first flange and the second flange are connected by the connecting bolt.

[0012] Optionally, the connector further includes an installation strip, which is attached to the side of the second flange facing away from the first flange, and the connecting bolt connects the installation strip, the second flange, and the first flange.

[0013] Optionally, the side of the flow guide shroud opposite to the valve body is provided with a sleeve for insertion into the flue.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. One side of the valve body is hung on the flow guide via a hook, and the other side is connected to the flow guide via a connecting bolt. When removing the valve body from the flow guide, only one connecting bolt needs to be removed, which is more convenient and faster than removing four bolts in the existing technology.

[0016] 2. Since the flange is annular and the second flange is located inside the flange, there is a certain gap between the second flange, the hook and the first flange. After the connecting bolt is loosened, the connecting bolt side can be rotated outward by a certain angle so that the flange on that side can be completely dislodged from the flange, thus making it easier to remove the hook from the second flange.

[0017] 3. The convex edge is set as a ring to wrap around the second flange, thereby limiting the periphery of the flange and improving the stability of the connection between the guide shield and the valve body. Attached Figure Description

[0018] Figure 1 This is an installation structure diagram of the valve body and the flow guide in the embodiments of this application.

[0019] Figure 2 This is an exploded view of the valve body and the flow guide in the embodiment of this application. Reference numerals: 1. Valve body; 11. First flange; 12. Raised edge; 13. Hook; 2. Flow guide; 21. Sleeve; 22. Second flange; 3. Connector; 31. Connecting bolt; 32. Mounting strip. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0021] This application discloses a fireproof check valve for flues. (Refer to...) Figure 1The flue fireproof check valve includes a valve body 1 and a flow guide hood 2. The valve body 1 controls the unidirectional flow of flue gas. One side of the flow guide hood 2 is connected to and communicates with the valve body 1, while the other side is fixedly connected to the flue, thereby guiding the flue gas into the flue. Specifically, one side of the valve body 1 connected to the flow guide hood 2 is movably connected to the flow guide hood 2; the other side is detachably connected to the flow guide hood 2. Therefore, when removing the valve body 1 from the flow guide hood 2, only the detachable end of the valve body 1 and the flow guide hood 2 needs to be removed, making the assembly and disassembly of the valve body 1 more convenient.

[0022] The guide hood 2 is provided with a sleeve 21 for insertion into the flue on the side opposite to the valve body 1. The sleeve 21 can play a positioning role for the installation of the guide hood 2, so that the guide hood 2 can be installed more accurately at the opening of the flue.

[0023] Reference Figure 1 and Figure 2 The valve body 1 has a first flange 11 integrally formed on the side near the flow guide 2. The first flange 11 is rectangular and extends outward from the valve body 1, contacting and connecting with the flow guide 2. This increases the contact area between the valve body 1 and the flow guide 2, improving the stability of the connection between them. Similarly, the flow guide 2 has a second flange 22 integrally formed on the side near the valve body 1. The second flange 22 is also rectangular and can contact the first flange 11. This second flange 22 increases the contact area between the flow guide 2 and the valve body 1, further improving the stability of the connection between them.

[0024] Reference Figure 1 and Figure 2 The outer edge of the first flange 11 is bent to form a raised edge 12, which is a rectangular ring shape. The raised edge 12 is perpendicular to the first flange 11 and extends towards the direction of the flow guide 2. The second flange 22 is located inside the ring-shaped raised edge 12, so that the periphery of the second flange 22 is limited by the raised edge 12, thereby limiting the periphery of the flow guide 2 from large displacement from its own periphery and preventing it from being disconnected from the valve body 1.

[0025] Reference Figure 1 and Figure 2One side of the raised edge 12 is bent inward with a hook 13, which can be suspended on the second flange 22, thereby enabling a movable connection between the flow guide 2 and one side of the valve body 1. This structure is also relatively simple, reducing production costs. In another embodiment, one side of the first flange 11 and one side of the second flange 22 are hinged. There is a certain gap between the second flange 22 and the hook 13, as well as between the second flange 11 and the second flange 22, allowing the side of the valve body 1 away from the hook 13 to rotate outward at a certain angle so that the second flange 22 on that side can be completely disengaged from the raised edge 12. This facilitates the removal of the hook 13 from the second flange 22, allowing the valve body 1 to be disassembled from the flow guide 2. It is worth noting that the hook 13 is only a small, bent flange with a short extension length, and the raised edge 12 also has a short extension length. Therefore, the gap between the second flange 22 and the hook 13, as well as between the first flange 11, is not large, thus preventing flue gas leakage.

[0026] Reference Figure 1 and Figure 2 The hooks 13 are bent into multiple shapes, and all hooks 13 are located on the same side of the convex edge 12 and are arranged at intervals along the length of the convex edge 12 on that side. In this embodiment, it is preferable to form two hooks 13, thereby reducing the manufacturing difficulty of the valve body 1 and improving the production efficiency of the valve body 1.

[0027] Reference Figure 1 and Figure 2 A connector 3 is provided on the side of the second flange 22 facing away from the hook 13, and the side of the second flange 22 facing away from the hook 13 is connected to the first flange 11 through the connector 3. The connector 3 includes a connecting bolt 31 and a mounting strip 32. A threaded hole is opened on the side of the second flange 22 facing away from the hook 13, and the threaded hole passes through the second flange 22. A threaded through hole communicating with the threaded hole is opened on the side of the first flange 11 facing away from the hook 13. The mounting strip 32 abuts against the side of the second flange 22 facing away from the first flange 11. The threaded end of the connecting bolt 31 passes through the mounting strip 32, the threaded hole, and the threaded through hole in sequence to connect the mounting strip 32, the second flange 22, and the first flange 11 together. The installation strip 32 increases the contact area between the connecting bolt 31 and the second flange 22, improving the stability of the connection between the first flange 11 and the second flange 22. In another embodiment, the first flange 11 and the second flange 22 can be connected only by the connecting bolt 31. In another embodiment, the mounting strip 32 can also be located on the side of the first flange 11 opposite to the second flange 22.

[0028] The implementation principle of a flue fireproof check valve according to an embodiment of this application is as follows: one side of the valve body 1 is hung on the guide hood 2 via a hook 13, and the other side is connected to the guide hood 2 via a connecting bolt 31. When removing the valve body 1 from the guide hood 2, only one connecting bolt 31 needs to be removed. In addition, the convex edge 12 is set as an annular shape to wrap around the second flange 22, thereby limiting the periphery of the flange and improving the stability of the connection between the guide hood 2 and the valve body 1. There is a certain amount of movable gap between the second flange 22, the hook 13, and the first flange 11. After the connecting bolt 31 is loosened, one side of the connecting bolt 31 can be rotated outward by a certain angle so that the flange on that side can be completely disengaged from the convex edge 12, thereby facilitating the removal of the hook 13 from the second flange 22.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flue fire-safe check valve characterized by: The utility model relates to a valve body (1) and a fairing (2), the valve body (1) is provided with first flanging (11) near the side of fairing (2), the fairing (2) is provided with second flanging (22) near the side of valve body (1), first flanging (11) with second flanging (22) one side movable joint, the other side is provided with connecting piece (3) and is detachable through connecting piece (3) connection, first flanging (11) is provided with convex edge (12), convex edge (12) extends to the side near second flanging (22), and the hook (13) of hanging in second flanging (22) is provided on convex edge (12), and second flanging (22) with hook (13) and first flanging (11) are all spaced apart with certain movable gap.

2. A fire damper check valve for flues as claimed in claim 1, wherein: The hook (13) is provided with a plurality of, and a plurality of hook (13) is arranged on the convex edge (12) with interval.

3. A fire damper check valve for flues as claimed in claim 1, wherein: The convex edge (12) is annular, and the second flanging (22) is located inside the convex edge (12).

4. A fire damper check valve for flues according to any one of claims 1 to 3, characterised in that: The connecting piece (3) includes connecting bolt (31), and the first flanging (11) is connected with the second flanging (22) through the connecting bolt (31).

5. A fire damper check valve for flues as claimed in claim 4 wherein: The connecting piece (3) further includes installation long strip (32), the installation long strip (32) is attached to the side of the second flanging (22) away from the first flanging (11), and the connecting bolt (31) connects the installation long strip (32), the second flanging (22) and the first flanging (11).

6. A fire damper check valve for flues as claimed in claim 5 wherein: The fairing (2) is provided with a sleeve (21) for inserting into the flue on the side away from the valve body (1).

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