Smoke exhaust fireproof valve convenient to maintain

Abstract

The utility model discloses a smoke exhaust fireproof valve convenient to maintain, which relates to the technical field of fireproof valves and comprises a valve body, a connecting seat is arranged at the top end of the valve body, a valve plate is arranged in the center of the inside of the valve body, a fixing plate is vertically arranged in the middle of the valve plate, and four cross-shaped inserting rods are arranged on the side wall of a valve rod. Cross-shaped inserting grooves matched with the four cross-shaped inserting rods are formed in the positions, corresponding to the four cross-shaped inserting rods, of the fixing plate, and a fixing sleeve is detachably arranged on the front side of the fixing plate. The cross-shaped inserting rod is matched with the cross-shaped inserting groove, rapid inserting installation between the valve plate and the valve rod is achieved, the cross-shaped fixing groove in the fixing sleeve is further matched with the inserting rod in an inserting mode, and when the valve plate needs to be maintained or replaced, only the fixing bolt on the fixing sleeve needs to be screwed out, the fixing sleeve is taken down, and the valve plate can be assembled and disassembled. And the valve plate can be easily detached from the valve rod, the operation is simple and convenient, and the maintenance efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of fire damper technology, specifically to a smoke exhaust fire damper that is easy to maintain. Background Technology

[0002] Smoke exhaust fire dampers are key equipment developed in building fire protection systems to cope with fire scenarios. Their technical background stems from the dual threats of smoke diffusion and fire spread during a fire. In the early stages of a fire, high-temperature smoke can spread rapidly through ventilation ducts, causing the fire to spread and threatening personnel safety. Traditional ventilation systems lack effective fire isolation measures, while smoke exhaust systems can remove smoke, but high-temperature smoke may damage smoke exhaust equipment or intensify the fire. Therefore, smoke exhaust fire dampers have emerged to address this issue, integrating smoke exhaust and fire prevention functions to achieve dynamic response during a fire.

[0003] The existing connection between the valve plate and the valve stem of the smoke exhaust fire damper is often quite complex. It may use non-removable or difficult-to-remove connection methods such as welding and riveting. This means that when the valve plate needs to be maintained or replaced, the operator needs to spend a lot of time and effort to disassemble and install it. The complex valve plate installation and disassembly methods lead to extended maintenance time.

[0004] For example, an improved fire damper disclosed in patent CN216112209U includes a cavity. An upper fixing plate is fixedly connected to the upper end of the outer side of the cavity, and a lower fixing plate is fixedly connected to the lower end of the outer side of the cavity. A rotating rod is fixedly connected inside the cavity, and a baffle is rotatably connected to the rotating rod. A connecting frame is fixedly connected to the right side of the lower surface of the baffle, and a fusible block is fixedly connected to the left side of the lower surface of the baffle. A connecting rod is fixedly connected to the lower surface of the fusible block. In this patent, the baffle and the rotating rod are connected by a rotational connection to realize the rotation of the baffle and achieve the opening and closing function of the fire damper. However, in actual use, if the baffle is damaged, deformed, or needs to be replaced with a baffle of a different specification after long-term use, the operator not only needs to disassemble the direct connection between the baffle and the rotating rod, but also needs other auxiliary parts, making the disassembly process cumbersome and time-consuming. The operator needs to spend a lot of time and energy on disassembly and installation, further increasing the difficulty and time cost of disassembly.

[0005] Therefore, it is necessary to invent a smoke exhaust fire damper that is easy to maintain to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a smoke exhaust fire damper that is easy to maintain, thus solving the problem that the valve plate is inconvenient to disassemble and maintain.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a smoke exhaust fire damper that is easy to maintain, comprising a valve body, a connecting seat at the top of the valve body, an actuator interface at the top of the connecting seat, a valve plate at the center of the valve body, the valve plate being fixedly connected to a valve stem passing through the connecting seat, the upper end of the valve stem being connected to a handwheel at the actuator interface, a fixing plate vertically disposed in the middle of the valve plate, four cross-shaped plug-in rods disposed on the side wall of the valve stem, cross-shaped plug-in grooves adapted to the fixing plate being disposed at corresponding positions of the four cross-shaped plug-in rods, and a fixing sleeve being detachably disposed on the front side of the fixing plate.

[0008] Furthermore, the connecting seat is fixed to the valve body by welding, and the actuator interface is also fixed to the connecting seat by welding, ensuring that the connection of each component is stable and providing basic support for the stable operation of the valve plate.

[0009] Furthermore, a handwheel is rotatably mounted on the outside of the actuator interface, and a bearing is provided between the handwheel and the actuator interface. The handwheel is rotatably mounted through the bearing, which makes it convenient for the operator to rotate the handwheel to drive the valve stem to rotate, thereby controlling the opening and closing of the valve plate.

[0010] Furthermore, a sealing ring is tightly fitted around the outer wall of the valve plate. The sealing ring is made of high-temperature resistant and wear-resistant material. The sealing ring and the valve plate are interference-fitted to improve the sealing performance between the valve plate and the valve body and prevent flue gas leakage.

[0011] Furthermore, the valve plate is engaged with the cross-shaped insertion rod on the side wall of the valve stem via a cross-shaped insertion groove on the fixing plate. This insertion structure provides a basis for the detachable installation of the valve plate.

[0012] Furthermore, the fixing sleeve is inserted into the plug rod, and a matching cross-shaped fixing groove is provided at the corresponding position of the fixing sleeve and the plug rod. Through the insertion and cooperation of the fixing sleeve and the plug rod, the stability of the connection between the valve plate and the valve stem is further enhanced.

[0013] Furthermore, fixing bolts are provided through the upper and lower ends of the fixing sleeve, and the fixing bolts extend into the interior of the fixing plate, thereby achieving a preliminary connection between the fixing sleeve and the fixing plate.

[0014] Furthermore, a screw hole is provided at the contact position between the fixing plate and the fixing bolt to match it. Through the cooperation of the fixing bolt and the screw hole, the fixing sleeve is firmly fixed on the fixing plate to ensure reliable connection between the valve plate and the valve stem.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] This invention achieves quick connection and installation between the valve plate and valve stem by setting a fixing plate in the middle of the valve plate and a cross-shaped plug-in rod on the side wall of the valve stem, in conjunction with the cross-shaped plug-in groove on the fixing plate. Simultaneously, a detachable fixing sleeve is provided, utilizing the cross-shaped fixing groove on the fixing sleeve to further connect with the plug-in rod, enhancing the stability of the connection between the valve plate and valve stem. When maintenance or replacement of the valve plate is required, simply unscrew the fixing bolts on the fixing sleeve and remove the fixing sleeve to easily detach the valve plate from the valve stem. The operation is simple and convenient, greatly improving maintenance efficiency. This design makes the maintenance of the smoke exhaust fire damper more convenient, reducing maintenance costs and time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall front structure of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the valve plate and valve stem of this utility model;

[0020] Figure 4 For the present utility model Figure 3 Enlarged 3D structural diagram at point A;

[0021] Figure 5 This is an exploded three-dimensional structural diagram of the plug rod and plug slot of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Valve body; 2. Connecting seat; 3. Actuator interface; 4. Handwheel; 5. Valve plate; 6. Valve stem; 7. Sealing ring; 8. Fixing plate; 9. Insert rod; 10. Insert groove; 11. Fixing sleeve; 12. Fixing groove; 13. Fixing bolt; 14. Screw hole. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides, for example Figure 1-5The smoke exhaust fire damper shown includes a valve body 1, a connecting seat 2 at the top of the valve body 1, an actuator interface 3 at the top of the connecting seat 2, a valve plate 5 at the center of the valve body 1, the valve plate 5 being fixedly connected to a valve stem 6 passing through the connecting seat 2, the upper end of the valve stem 6 being drivenly connected to a handwheel 4 at the actuator interface 3, a fixing plate 8 being vertically installed in the middle of the valve plate 5, four cross-shaped plug-in rods 9 being installed on the side wall of the valve stem 6, cross-shaped plug-in grooves 10 being provided at the corresponding positions of the fixing plate 8 and the four cross-shaped plug-in rods 9, and a fixing sleeve 11 being detachably installed on the front side of the fixing plate 8.

[0026] The connecting seat 2 is fixed to the valve body 1 by welding, and the actuator interface 3 is also fixed to the connecting seat 2 by welding. A handwheel 4 is rotatably installed on the outside of the actuator interface 3. A bearing is provided between the handwheel 4 and the actuator interface 3. The handwheel 4 is rotatably installed through the bearing. A sealing ring 7 is tightly fitted around the outer wall of the valve plate 5. The sealing ring 7 is made of high temperature resistant and wear resistant material. The sealing ring 7 and the valve plate 5 are interference fit.

[0027] In this embodiment, the operator can accurately control the opening and closing of the valve plate 5 by turning the handwheel 4. The bearing reduces the friction when the handwheel 4 is turned, allowing the operator to easily turn the handwheel 4, improving the convenience and flexibility of operation. Furthermore, the sealing ring 7 is made of high-temperature and wear-resistant materials, which can meet the working requirements of the smoke exhaust fire damper in high-temperature and high-wear environments. At the same time, the interference fit ensures that the sealing ring 7 fits tightly with the valve plate 5, effectively improving the sealing performance between the valve plate 5 and the valve body 1, preventing smoke leakage, and ensuring that the smoke exhaust fire damper can normally perform its smoke exhaust and fire prevention functions in the event of a fire.

[0028] The valve plate 5 is connected to the cross-shaped insertion rod 9 on the side wall of the valve stem 6 via the cross-shaped insertion groove 10 on the fixing plate 8. The fixing sleeve 11 is inserted into the insertion rod 9. The fixing sleeve 11 and the insertion rod 9 are provided with matching cross-shaped fixing grooves 12. The upper and lower ends of the fixing sleeve 11 are provided with fixing bolts 13, which extend into the interior of the fixing plate 8. The fixing plate 8 and the fixing bolts 13 are provided with matching screw holes 14 at the contact position.

[0029] In this embodiment, the cross-shaped insertion slot 10 and the cross-shaped insertion rod 9 form a simple and quick insertion structure, facilitating the installation and disassembly of the valve plate 5 and the valve stem 6. The cross-shaped insertion design ensures accurate relative positioning between the valve plate 5 and the valve stem 6, and the matching design of the cross-shaped fixing slot 12 and the insertion rod 9 allows the fixing sleeve 11 to be better fixed on the insertion rod 9, further enhancing the stability of the connection between the valve plate 5 and the valve stem 6 and preventing the valve plate 5 from loosening or falling off due to external force or vibration during operation. Furthermore, the cooperation between the fixing bolt 13 and the screw hole 14 firmly fixes the fixing sleeve 11 to the fixing plate 8, making the connection between the valve plate 5 and the valve stem 6 more reliable. When maintenance or replacement of the valve plate 5 is required, simply unscrew the fixing bolt 13 and remove the fixing sleeve 11 to easily remove the valve plate 5 from the valve stem 6. The operation is simple and convenient, greatly improving maintenance efficiency.

[0030] Working principle of this utility model:

[0031] Refer to the instruction manual appendix Figure 1-5 When using this utility model, when it is necessary to disassemble the valve plate 5, firstly, use a wrench or other tools to unscrew the fixing bolts 13 at both ends of the fixing sleeve 11 in a counterclockwise direction until all fixing bolts 13 are completely removed from the screw holes 14. After all fixing bolts 13 are unscrewed, gently remove the fixing sleeve 11 from the plug rod 9 by hand. After the fixing sleeve 11 is removed, the valve plate 5 can be pulled out from the valve rod 6 in the opposite direction to the plugging direction, so that the cross-shaped plug rod 9 is disengaged from the cross-shaped plug groove 10, and the disassembly of the valve plate 5 can be completed.

[0032] When valve plate 5 needs to be installed, first, align the cross-shaped insertion groove 10 on the fixing plate 8 in the middle of valve plate 5 with the cross-shaped insertion rod 9 on the side wall of valve stem 6. Then, insert valve plate 5 along the insertion direction so that the cross-shaped insertion rod 9 is fully inserted into the cross-shaped insertion groove 10, achieving the initial insertion and engagement of valve plate 5 and valve stem 6. Align the fixing sleeve 11 with the insertion rod 9 so that the cross-shaped fixing groove 12 on the fixing sleeve 11 matches the insertion rod 9. Then, insert the fixing sleeve 11 onto the insertion rod 9, ensuring that the fixing sleeve 11 and the insertion rod 9 fit tightly. Then, insert the fixing bolt 13 through the upper and lower ends of the fixing sleeve 11 in sequence, and initially screw it into the corresponding screw hole 14 on the fixing plate 8 by hand. Then, use a wrench or other tools to tighten the fixing bolt 13 clockwise to ensure that the fixing sleeve 11 is firmly fixed on the fixing plate 8, making the connection between valve plate 5 and valve stem 6 more reliable.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0034] 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 smoke exhaust fire damper that is easy to maintain, comprising a valve body (1), characterized in that: The valve body (1) is provided with a connecting seat (2) at its top end. The connecting seat (2) is provided with an actuator interface (3) at its top end. The valve plate (5) is provided at the center of the valve body (1). The valve plate (5) is fixedly connected to the valve stem (6) that passes through the connecting seat (2). The upper end of the valve stem (6) is connected to the handwheel (4) at the actuator interface (3) via a transmission. A fixing plate (8) is vertically provided in the middle of the valve plate (5). Four cross-shaped plug-in rods (9) are provided on the side wall of the valve stem (6). A cross-shaped plug-in groove (10) is provided at the corresponding position of the fixing plate (8) and the four cross-shaped plug-in rods (9). A fixing sleeve (11) is detachably provided on the front side of the fixing plate (8).

2. The easy-to-maintain smoke exhaust fire damper according to claim 1, characterized in that: The connecting seat (2) is fixed to the valve body (1) by welding, and the actuator interface (3) is also fixed to the connecting seat (2) by welding.

3. The easy-to-maintain smoke exhaust fire damper according to claim 2, characterized in that: A handwheel (4) is rotatably mounted on the outside of the actuator interface (3). A bearing is provided between the handwheel (4) and the actuator interface (3), and the handwheel (4) is rotatably mounted through the bearing.

4. The easy-to-maintain smoke exhaust fire damper according to claim 1, characterized in that: A sealing ring (7) is tightly fitted around the outer wall of the valve plate (5). The sealing ring (7) is made of high temperature resistant and wear resistant material. The sealing ring (7) and the valve plate (5) are interference fit.

5. The easy-to-maintain smoke exhaust fire damper according to claim 1, characterized in that: The valve plate (5) is connected to the cross-shaped insertion rod (9) on the side wall of the valve stem (6) through the cross-shaped insertion groove (10) on the fixing plate (8).

6. The easy-to-maintain smoke exhaust fire damper according to claim 1, characterized in that: The fixing sleeve (11) is inserted into the plug rod (9), and a cross-shaped fixing groove (12) matching the fixing sleeve (11) and the plug rod (9) is provided at the corresponding position.

7. A smoke exhaust fire damper that is easy to maintain according to claim 6, characterized in that: The upper and lower ends of the fixing sleeve (11) are provided with fixing bolts (13), which extend into the interior of the fixing plate (8).

8. A smoke exhaust fire damper that is easy to maintain according to claim 7, characterized in that: The fixing plate (8) and the fixing bolt (13) are provided with screw holes (14) that match each other.

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