Fireproof smoke exhaust valve mounting tool and mounting method

Abstract

This application relates to a fireproof smoke exhaust valve installation fixture and installation method. Since the first connecting piece connects to two ducts to be connected, and the second connecting piece is installed on the fireproof smoke exhaust valve via a limiting rod, when the first and second connecting pieces are connected, the first connecting piece provides a temporary fixing point for the fireproof smoke exhaust valve. Furthermore, the fireproof smoke exhaust valve installation fixture is positioned diagonally opposite the fireproof smoke exhaust valve during installation. After the temporary connection, the entire fireproof smoke exhaust valve is limited. Simultaneously, when the second and first connecting pieces are connected, the central axis of the limiting rod is collinear with the central axis of the connecting hole on the duct flange. At this point, the connecting holes on the fireproof smoke exhaust valve flange and the duct flange are aligned one-to-one, allowing for the installation of the connecting bolts. This eliminates the need for multiple adjustments during the alignment process between the fireproof smoke exhaust valve and the duct; only the second and first connecting pieces at two diagonals need to be connected. It also restricts the relative movement of the two components, thus facilitating the installation of the fireproof smoke exhaust valve.

Description

Technical Field

[0001] This application relates to the field of ventilation duct technology, and in particular to a fireproof smoke exhaust valve installation fixture and installation method. Background Technology

[0002] Currently, the working principle of fire-resistant smoke exhaust valves is mainly based on the pressure difference between indoors and outdoors, as well as the coordinated action of the motor, reducer, transmission mechanism, blades, housing, and control cabinet. The specific working principle of a fire-resistant smoke exhaust valve is as follows: Under normal circumstances, the valve blades are closed, preventing smoke from passing through. Once a fire signal is detected, the control cabinet starts the motor, which opens the blades through the transmission mechanism, using the pressure difference between indoors and outdoors to expel the smoke. The smoke exhaust valve can also be linked with fire detectors for automatic control. In addition, the smoke exhaust valve is equipped with devices such as fusible alloys or shape memory alloys that automatically close at high temperatures, serving as a smoke and fire barrier. Smoke exhaust valves are usually installed at the end of the branch pipe of a mechanical smoke exhaust system and are normally kept closed to reduce air leakage. In the event of a fire, they can be opened manually or electrically to expel smoke.

[0003] Since fire-resistant smoke exhaust valves are generally installed on building pipes, that is, the two ends of the fire-resistant smoke exhaust valve are connected to the pipes that need to be connected; during installation, the operator aligns the threaded hole on the flange of the fire-resistant smoke exhaust valve with the threaded hole on the flange of the smoke exhaust pipe, and then uses bolts to fix the fire-resistant smoke exhaust valve to the smoke exhaust pipe through the threaded hole on the flange.

[0004] However, the following technical problems exist:

[0005] (1) When using screws to fix the fireproof smoke exhaust valve, a lifting device is needed to insert it into the connection port of the two pipes to be connected. Since the fireproof smoke exhaust valve is generally quite heavy, it is difficult to keep it stably aligned with the smoke exhaust pipe. Furthermore, turning the screws may cause the fireproof smoke exhaust valve to become misaligned, making the installation difficult. Figure 1 As shown.

[0006] (2) In addition, when installing fireproof smoke exhaust valves on some pipes that were not originally designed to be installed, the gap between the fireproof smoke exhaust valve and the port of the pipe to be connected is often large due to the cutting of the pipe section. Therefore, it is necessary to cut the pipe with extreme precision to create space for the installation of the fireproof smoke exhaust valve, which requires high operational skills from the construction personnel. Summary of the Invention

[0007] This application provides a fireproof smoke exhaust valve installation fixture and installation method to solve the problems in related technologies where fireproof smoke exhaust valves are generally heavy, making it difficult to maintain stable alignment with the smoke exhaust pipe, and causing misalignment when tightening screws.

[0008] Firstly, a fireproof smoke exhaust valve installation fixture is provided, comprising:

[0009] The first connector includes a first part, which is parallel to the axial direction of the fireproof smoke exhaust valve and located between the flanges at both ends of the fireproof smoke exhaust valve; the first part is connected to the second part at both ends in the axial direction, and the first part is connected to the third part through the second part; the third part is used to connect to the connecting holes on the flanges of the corresponding air ducts at both ends of the fireproof smoke exhaust valve.

[0010] The second connector has its middle part snapped into the first part and has a limiting rod that extends and retracts in the axial direction; the second connector is integrally disposed between the flanges at both ends of the fireproof smoke exhaust valve and is used to connect through the limiting rod and the connecting hole on the flange of the fireproof smoke exhaust valve.

[0011] When the second connector and the first connector are connected, the central axis of the limiting rod is collinear with the central axis of the connecting hole on the flange of the air duct.

[0012] In some embodiments, the first portion includes a first round rod, the second portion includes a U-shaped connecting rod, and the third portion includes a second round rod;

[0013] The internal space of the U-shaped connecting rod is a clearance space for avoiding the flange of the fireproof smoke exhaust valve and the flange of the air duct; the first round rod and the second round rod are respectively fixedly connected to the two ends of the U-shaped connecting rod perpendicularly; the central axis of the second round rod is collinear with the central axis of the connecting hole on the flange of the air duct, and is inserted into the connecting hole on the flange of the air duct.

[0014] When the first connector is installed on the duct flange and the second connector is installed on the fireproof smoke exhaust valve flange, the second round rod and the limit rod are collinear and do not contact each other.

[0015] In some embodiments, the third part further includes an L-shaped limiting baffle, the long plate of which is located directly above the second round rod, and the bottom surface is a flanged outer edge contact plane; the L-shaped limiting baffle is connected to the U-shaped connecting rod.

[0016] In some embodiments, the outer side of the second round rod is provided with a plurality of rubber strips distributed circumferentially thereon, each rubber strip extending axially along the second round rod, and its thickness gradually decreasing in the extending direction.

[0017] In some embodiments, the second connector includes a square rod arranged along the axial direction, and a semi-circular sleeve is provided at its upper center, which engages with the upper part of the outer side of the first round rod; vertical plates are provided at both ends of the square rod, and the limiting rod is provided on the vertical plates;

[0018] When the first connector is installed on the duct flange and the second connector is installed on the fireproof smoke exhaust valve flange, the vertical plate is located within the clearance space.

[0019] In some embodiments, the vertical plate is provided with a circular hole;

[0020] The limiting rod includes a second plug and a stop block. The second plug passes through the circular hole and is used to be inserted into the connection hole of the flange of the fireproof smoke exhaust valve. The outer side of the second plug is provided with an elastic covering layer.

[0021] In some embodiments, the vertical plate is provided with threaded holes;

[0022] The limiting rod includes a connected screw and a connecting cylinder. The screw passes through the threaded hole and is screwed to the vertical plate. The connecting cylinder is used to insert into the connecting hole of the fireproof smoke exhaust valve flange.

[0023] In some embodiments, the system further includes a plurality of gasket rings with the same dimensions and size as the flanges at both ends of the fireproof smoke exhaust valve; the plurality of gasket rings are provided with the same number of through holes as the connecting holes; and the gasket rings are coated with a high-temperature resistant adhesive layer.

[0024] Secondly, a method for installing a fireproof smoke exhaust valve is provided, which includes the following steps:

[0025] Two sets of fireproof smoke exhaust valve installation fixtures are provided;

[0026] Install a second connector on each of the opposite corners of the fireproof smoke exhaust valve, and then insert it into the connection port formed by the two air ducts to be connected;

[0027] Install the first connector on the connection hole corresponding to the diagonal on the flange of the two air ducts to be connected;

[0028] First, snap one of the second connectors into its corresponding first connector, and then snap the remaining second connector into its corresponding first connector to temporarily connect the fireproof smoke exhaust valve and the two ducts.

[0029] Insert the connecting bolts, which will ultimately be used to connect the fireproof smoke exhaust valve and the two air ducts, into the remaining connecting holes without limit rods. After that, remove the second connecting piece and the first connecting piece, and then install the remaining connecting bolts.

[0030] In some embodiments, the following steps are included before the step of inserting the fireproof smoke exhaust valve into the connection port formed by the two ducts to be connected:

[0031] Predict the gap between the fireproof smoke exhaust valve and the two ducts, and compare it with the design value;

[0032] If the gap exceeds the design value, determine the corresponding thickness or number of gasket rings based on the gap amount; and then bond the gasket rings to the flange of the fireproof smoke exhaust valve.

[0033] The beneficial effects of the technical solution provided in this application include:

[0034] This application provides a fireproof smoke exhaust valve installation fixture and method. Since the first connector connects to the two ducts to be connected, and the second connector is installed on the fireproof smoke exhaust valve via a limiting rod, when the first and second connectors are connected, the first connector provides a temporary fixing point for the fireproof smoke exhaust valve. Furthermore, the fireproof smoke exhaust valve installation fixture is positioned diagonally opposite the fireproof smoke exhaust valve during installation. After the temporary connection, the entire fireproof smoke exhaust valve is limited and difficult to move. Simultaneously, when the second and first connectors are connected, the central axis of the limiting rod is collinear with the central axis of the connecting hole on the duct flange. At this time, the connecting holes on the fireproof smoke exhaust valve flange and the duct flange are aligned one-to-one, allowing for the installation of the connecting bolts. This eliminates the need for multiple adjustments during the alignment process between the fireproof smoke exhaust valve and the duct; only the second and first connectors at two diagonal points need to be connected. It also restricts the relative movement of the two, thus solving the problems in related technologies where fireproof smoke exhaust valves are generally heavy, making it difficult to maintain stable alignment with the smoke exhaust pipe, and causing misalignment when tightening screws. Attached Figure Description

[0035] 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram illustrating the installation scenario of a fireproof smoke exhaust valve provided in related technologies;

[0037] Figure 2 This is a schematic diagram of the structure of the fireproof smoke exhaust valve installation fixture provided in the embodiments of this application;

[0038] Figure 3 A schematic diagram of the structure of a fireproof smoke exhaust valve installation fixture from another perspective, provided for an embodiment of this application;

[0039] Figure 4 A schematic diagram of the installation fixture for the diagonally installed fireproof smoke exhaust valve provided in the embodiments of this application during use;

[0040] Figure 5 A schematic diagram of the installation fixture for installing fireproof smoke exhaust valves at the top two corners provided in the embodiments of this application;

[0041] Figure 6 A schematic diagram showing the connection of the fireproof smoke exhaust valve installation fixture, which is first installed at one corner, according to an embodiment of this application.

[0042] Figure 7 This is a schematic diagram of a temporary connection after completing a diagonal connection, provided in an embodiment of this application.

[0043] In the figure: 1. First connecting piece; 100. First round rod; 101. U-shaped connecting rod; 102. Second round rod; 103. L-shaped limiting baffle; 2. Second connecting piece; 200. Square rod; 201. Vertical plate; 202. Semi-circular sleeve; 3. Limiting rod; 300. Screw; 301. Connecting cylinder; 4. Washer ring. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] It should be understood in connection with this application that, with reference to Figure 1 During installation, the fireproof smoke exhaust valve needs to be inserted into the connection port of the two pipes to be connected using a lifting device. Since the fireproof smoke exhaust valve is generally quite heavy, it is difficult to keep it stably aligned with the smoke exhaust pipe. Furthermore, turning the screws may cause the fireproof smoke exhaust valve to become misaligned, making the installation difficult.

[0046] Various technologies exist regarding alignment devices, but a solution needs to be found that allows for this construction using a simple structure without altering the original structure of the duct and fire-resistant smoke exhaust valve. Furthermore, when adding fire-resistant smoke exhaust valves to ducts that were not originally designed to be installed, the gap between the valve and the connecting duct is often large due to pipe section cutting. Therefore, extremely precise pipe cutting is required to create space for the valve installation, demanding high skill from the construction personnel. This is also a problem that this application aims to solve. The following sections will explain these points in detail.

[0047] In the attached diagram, A is marked as a fireproof smoke exhaust valve, B is marked as a flange on the duct, and C is marked as a connection hole.

[0048] Regarding question one

[0049] A fireproof smoke exhaust valve installation fixture and installation method are provided to solve the problems in related technologies where fireproof smoke exhaust valves are generally heavy, making it difficult to maintain stable alignment with the smoke exhaust pipe, and causing misalignment when tightening screws.

[0050] Please see Figures 2-7 A fireproof smoke exhaust valve installation fixture, comprising:

[0051] The first connector 1 includes a first part, which is parallel to the axial direction of the fireproof smoke exhaust valve and located between the flanges at both ends of the fireproof smoke exhaust valve; the first part is connected to the second part at both ends in the axial direction, and the first part is connected to the third part through the second part; the third part is used to connect to the connecting holes on the flanges of the corresponding air ducts at both ends of the fireproof smoke exhaust valve.

[0052] The second connector 2 has its middle part snapped into the first part and has a limiting rod 3 that can extend and retract in the axial direction; the second connector 2 is integrally disposed between the flanges at both ends of the fireproof smoke exhaust valve and is used to connect through the limiting rod 3 and the connecting hole on the flange of the fireproof smoke exhaust valve.

[0053] When the second connector 2 and the first connector 1 are connected, the central axis of the limiting rod 3 is collinear with the central axis of the connecting hole on the flange of the air duct.

[0054] With the above structural design, during installation, since the first connector 1 is connected to the two ducts to be connected, and the second connector 2 is installed on the fireproof smoke exhaust valve via a limiting rod, when the first connector 1 and the second connector 2 are connected, the first connector 1 provides a temporary fixing point for the fireproof smoke exhaust valve. Furthermore, the fireproof smoke exhaust valve installation fixture is set diagonally on the fireproof smoke exhaust valve during installation. After the temporary connection, the entire fireproof smoke exhaust valve is limited and difficult to move. Simultaneously, since the central axis of the limiting rod 3 is collinear with the central axis of the connecting hole on the duct flange when the second connector 2 and the first connector 1 are connected, the connecting holes on the fireproof smoke exhaust valve flange and the duct flange are aligned one-to-one, and then the connecting bolts can be installed. This eliminates the need for multiple adjustments during the alignment process of the fireproof smoke exhaust valve and the duct; only the second connector 2 and the first connector 1 at two diagonal points need to be connected. It also restricts the relative movement of the two, thus solving the problems in related technologies where fireproof smoke exhaust valves are generally heavy, making it difficult to maintain stable alignment with the smoke exhaust pipe, and causing misalignment when tightening screws.

[0055] The above-mentioned fireproof smoke exhaust valve installation fixtures cleverly utilize the connection holes on the flanges of the fireproof smoke exhaust valves and the duct flanges as installation points, eliminating the need for additional drilling operations and making them more convenient in actual operation.

[0056] In some preferred embodiments, reference Figure 2 and Figure 3 A detailed structural description of the first connector 1 is provided below:

[0057] The first part includes a first round rod 100, the second part includes a U-shaped connecting rod 101, and the third part includes a second round rod 102;

[0058] The internal space of the U-shaped connecting rod 101 is a clearance space for avoiding the flange of the fireproof smoke exhaust valve and the flange of the air duct; the first round rod 100 and the second round rod 102 are respectively vertically fixed to the two ends of the U-shaped connecting rod 101; the central axis of the second round rod 102 is collinear with the central axis of the connecting hole on the flange of the air duct, and is inserted into the connecting hole on the flange of the air duct.

[0059] When the first connector 1 is installed on the duct flange and the second connector 2 is installed on the fireproof smoke exhaust valve flange, the second round rod 102 and the limiting rod 3 are collinear and do not contact each other.

[0060] The U-shaped connecting rod 101 mentioned above not only achieves connection but also serves to avoid obstacles. At the same time, in order to ensure that the central axis of the limiting rod 3 is collinear with the central axis of the connecting hole on the flange of the air duct when the second connecting piece 2 and the first connecting piece 1 are connected, the distance between the first round rod 100 and the second connecting piece 2 is a key factor. However, since different sizes of fireproof smoke exhaust valves correspond to different air duct sizes, no specific distance value is specified.

[0061] Furthermore, there is a problem: the first connector 1 will shift under the weight of the fireproof smoke exhaust valve. Therefore, to eliminate this defect, the following two methods are used:

[0062] The first type, the third part, also includes an L-shaped limiting baffle 103. The long plate portion of the L-shaped limiting baffle 103 is located directly above the second round rod 102, and its bottom surface is the outer edge of the flange fitting plane. The L-shaped limiting baffle 103 is connected to the U-shaped connecting rod 101. Since the long plate portion and the outer edge of the flange are in parallel contact with each other, the L-shaped limiting baffle 103 will not rotate, thereby restricting the rotation of the second round rod 102.

[0063] The second type has multiple rubber strips distributed circumferentially on the outer side of the second round rod 102. Each rubber strip extends axially along the second round rod 102, and its thickness gradually decreases in the extending direction.

[0064] Both of the above methods restrict the rotation of the second round rod 102 in the connecting hole.

[0065] In some preferred embodiments, reference Figure 2 and Figure 3 The structure of the second connector 2 will be described in detail below:

[0066] The second connecting member 2 includes a square rod 200, which is arranged axially and has a semi-circular sleeve 202 at its upper middle part. The semi-circular sleeve 202 is engaged with the upper part of the outer side of the first round rod 100. Vertical plates 201 are provided at both ends of the square rod 200, and limiting rods 3 are provided on the vertical plates 201.

[0067] When the first connector 1 is installed on the duct flange and the second connector 2 is installed on the fireproof smoke exhaust valve flange, the vertical plate 201 is located within the clearance space. Since the limiting rod 3 is telescopic, it facilitates the connection of the fireproof smoke exhaust valve flange. The semi-circular sleeve 202 makes the first round rod 100 a hanging point, and the semi-circular sleeve 202 a hook connected to the hanging point, thus supporting the weight of the fireproof smoke exhaust valve. The above also considers that after installation, the weight will be borne by two ducts; therefore, this solution will not affect the ducts.

[0068] Furthermore, the telescopic structure of the limiting rod 3 is as follows:

[0069] Form 1: The vertical plate 201 has a circular hole; the limiting rod 3 includes a second plug and a stop block. The second plug passes through the circular hole and is used to insert into the connection hole of the fireproof smoke exhaust valve flange. The outer side of the second plug is provided with an elastic covering layer. The elastic covering layer can ensure a tight connection between the second plug and the connection hole, preventing it from slipping due to vibration and causing temporary connection instability.

[0070] Form 2: The vertical plate 201 is provided with threaded holes;

[0071] The limiting rod 3 includes a connected screw 300 and a connecting cylinder 301. The screw 300 passes through a threaded hole and is screwed to the vertical plate 201. The connecting cylinder 301 is used to insert into the connecting hole of the fireproof smoke exhaust valve flange. The threaded structure facilitates adjustment and limiting.

[0072] Regarding question two

[0073] The fireproof smoke exhaust valve installation fixture also includes several gasket rings 4 with the same dimensions and size as the flanges at both ends of the fireproof smoke exhaust valve; the gasket rings 4 have the same number of through holes as the connection holes; the gasket rings 4 are coated with a high-temperature resistant adhesive layer. The high-temperature resistant adhesive layer can be found in the description in CN 111118490 B.

[0074] This application also provides references. Figure 6 and Figure 7 A method for installing a fireproof smoke exhaust valve, comprising the following steps:

[0075] Step 100: Provide two sets of fireproof smoke exhaust valve installation fixtures;

[0076] Step 101: Install a second connector 2 at each of the opposite corners of the fireproof smoke exhaust valve, and then insert it into the connection port formed by the two air ducts to be connected;

[0077] Step 102: Install the first connector 1 on the corresponding diagonal connection holes on the flanges of the two ducts to be connected;

[0078] Step 103: First, snap one of the second connectors 2 into its corresponding first connector 1, and then snap the remaining second connector 2 into its corresponding first connector 1 to temporarily connect the fireproof smoke exhaust valve and the two air ducts.

[0079] Step 104: Insert the connecting bolts used to finally connect the fireproof smoke exhaust valve and the two air ducts into the remaining connecting holes without limit rods 3. After completion, remove the second connecting piece 2 and the first connecting piece 1, and then install the remaining connecting bolts.

[0080] Before inserting the fireproof smoke exhaust damper into the connection port formed by the two ducts to be connected, the following steps are also included:

[0081] Predict the gap between the fireproof smoke exhaust valve and the two ducts, and compare it with the design value;

[0082] If the gap exceeds the design value, determine the corresponding thickness or number of gasket rings 4 based on the gap amount; and then bond the gasket rings 4 to the flange of the fireproof smoke exhaust valve. These steps solve the problem of requiring extremely precise pipe cutting to create space for the installation of the fireproof smoke exhaust valve, which places high demands on the operator's skills. This reduces the precision requirements for operators and the process, facilitating the later installation of fireproof smoke exhaust valves in ductwork.

[0083] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0084] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0085] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fireproof smoke exhaust valve installation fixture, characterized in that, It includes: The first connecting member (1) includes a first part, which is parallel to the axial direction of the fireproof smoke exhaust valve and is located between the flanges at both ends of the fireproof smoke exhaust valve. The first part is connected to the second part at both ends in the axial direction, and the first part is connected to the third part through the second part; the third part is used to connect to the connection holes on the corresponding duct flanges at both ends of the fireproof smoke exhaust valve. The second connector (2) is engaged with the first part and has a limiting rod (3) that extends and retracts in the axial direction; the second connector (2) is integrally disposed between the flanges at both ends of the fireproof smoke exhaust valve and is used to connect through the limiting rod (3) and the connecting hole on the flange of the fireproof smoke exhaust valve. When the second connector (2) and the first connector (1) are connected, the central axis of the limiting rod (3) is collinear with the central axis of the connecting hole on the flange of the air duct.

2. The fireproof smoke exhaust valve installation fixture as described in claim 1, characterized in that: The first part includes a first round rod (100), the second part includes a U-shaped connecting rod (101), and the third part includes a second round rod (102). The internal space of the U-shaped connecting rod (101) is a clearance space for avoiding the flange of the fireproof smoke exhaust valve and the flange of the air duct; the first round rod (100) and the second round rod (102) are respectively vertically fixed to the two ends of the U-shaped connecting rod (101); the central axis of the second round rod (102) is collinear with the central axis of the connecting hole on the flange of the air duct, and is inserted into the connecting hole on the flange of the air duct; When the first connector (1) is installed on the duct flange and the second connector (2) is installed on the fireproof smoke exhaust valve flange, the second round rod (102) and the limiting rod (3) are collinear and do not contact each other.

3. The fireproof smoke exhaust valve installation fixture as described in claim 2, characterized in that: The third part also includes an L-shaped limiting baffle (103), the long plate of which is located directly above the second round rod (102), and the bottom surface is a flanged outer edge contact plane; the L-shaped limiting baffle (103) is connected to the U-shaped connecting rod (101).

4. The fireproof smoke exhaust valve installation fixture as described in claim 2, characterized in that: The second round rod (102) has a plurality of rubber strips distributed along its circumference on its outer side. Each rubber strip extends along the axial direction of the second round rod (102) and its thickness gradually decreases in the extending direction.

5. The fireproof smoke exhaust valve installation fixture as described in claim 2, characterized in that: The second connector (2) includes a square rod (200), which is arranged along the axial direction and has a semi-circular sleeve (202) at its upper center. The semi-circular sleeve (202) is engaged with the upper part of the outer side of the first round rod (100). Vertical plates (201) are provided at both ends of the square rod (200), and the limiting rod (3) is provided on the vertical plates (201). When the first connector (1) is installed on the duct flange and the second connector (2) is installed on the fireproof smoke exhaust valve flange, the vertical plate (201) is located within the clearance space.

6. The fireproof smoke exhaust valve installation fixture as described in claim 5, characterized in that: The vertical plate (201) is provided with a circular hole; The limiting rod (3) includes a second plug and a stop block. The second plug passes through the circular hole and is used to be inserted into the connection hole of the fireproof smoke exhaust valve flange. The outer side of the second plug is provided with an elastic covering layer.

7. The fireproof smoke exhaust valve installation fixture as described in claim 5, characterized in that: The vertical plate (201) is provided with threaded holes; The limiting rod (3) includes a screw (300) and a connecting cylinder (301) connected to each other. The screw (300) passes through the threaded hole and is screwed to the vertical plate (201). The connecting cylinder (301) is used to be inserted into the connecting hole of the fireproof smoke exhaust valve flange.

8. The fireproof smoke exhaust valve installation fixture as described in claim 1, characterized in that: It also includes a number of gasket rings (4) with the same size and dimensions as the flanges at both ends of the fireproof smoke exhaust valve; the gasket rings (4) are provided with the same number of through holes as the connection holes; the gasket rings (4) are coated with a high-temperature resistant adhesive layer.

9. A method for installing a fireproof smoke exhaust valve, characterized in that, It includes the following steps: Provide two sets of installation fixtures for fireproof smoke exhaust valves as described in any one of claims 1-8; Install a second connector (2) at each of the opposite corners of the fireproof smoke exhaust valve, and then insert it into the connection port formed by the two air ducts to be connected; Install the first connector (1) on the connection holes corresponding to the diagonal on the flanges of the two air ducts to be connected; First, snap one of the second connectors (2) into its corresponding first connector (1), and then snap the remaining second connector (2) into its corresponding first connector (1) to temporarily connect the fireproof smoke exhaust valve and the two air ducts. Insert the connecting bolts used to finally connect the fireproof smoke exhaust valve and the two air ducts into the remaining connecting holes without limit rods (3). After completion, remove the second connecting piece (2) and the first connecting piece (1), and then install the remaining connecting bolts.

10. The method for installing a fireproof smoke exhaust valve as described in claim 9, characterized in that, Before inserting the fireproof smoke exhaust damper into the connection port formed by the two ducts to be connected, the following steps are also included: Predict the gap between the fireproof smoke exhaust valve and the two ducts, and compare it with the design value; If the gap exceeds the design value, determine the corresponding thickness or number of gasket rings (4) according to the gap amount; and bond the gasket rings (4) to the fireproof smoke exhaust valve flange.

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