Shutter of fire exit door

Abstract

The invention belongs to the technical field of fire fighting, and discloses a fire exit door shutter which comprises a limiting frame, and a pushing turnover assembly is arranged on the inner side of the limiting frame and used for controlling a shutter structure to be turned over and closed through pushing. Through cooperation of structures such as the pushing and overturning assembly and the limiting frame, the stability of pushing adjustment is improved, meanwhile, the problem that adjustment cannot be achieved due to corrosion of a connecting shaft is avoided, two sets of connecting plates are arranged, and a fixed tooth structure at the bottom can be used for being meshed with all sets of combined gears, so that adjustment is convenient. When a connecting plate is pushed to move towards the back face, fixing teeth control a combined gear to rotate, a rotating shaft and a shutter grille are driven to rotate and adjust in the rotating process, the rotating structure is simple, an arc-shaped strip and an arc-shaped groove are tightly combined after 90-degree overturning, the sealing performance after overturning can be greatly improved, and the service life of the shutter grille is prolonged. And adjustment is carried out in a gear meshing mode, so that the problem of device failure caused by corrosion of the connecting shaft can be effectively avoided.

Description

Technical Field

[0001] This invention belongs to the field of fire protection technology, specifically fire door louvers. Background Technology

[0002] Modern power plants typically place equipment in different rooms, and fire doors are required at the connection points between rooms and passageways for fire isolation. To better ensure air circulation between rooms, louvered structures are usually installed on the fire doors.

[0003] For example, utility model publication CN222184604U discloses an automatic fire-fighting smoke exhaust louver, including a window body, multiple louvers pivotally connected to the window body, and a drive assembly connected to the louvers. The drive assembly includes a drive element; a monitoring unit, which includes a temperature sensor, a smoke sensor, and a control unit. The temperature sensor and smoke sensor are electrically connected to the control unit, and the control unit is electrically connected to the drive element. When smoke is present, an alarm can be triggered, and the control unit controls the drive element to open or close the louvers. Specifically, the extension and retraction of the drive element drives the drive plate to move laterally through a connector and a connecting rod. The drive plate drives the louver body to rotate around the pivot point as the central axis through multiple connecting plates, thereby causing the latch plates of adjacent louvers to move closer to each other or further away, so that the louvers are in an open or closed state, enabling automatic opening and closing and enhancing the smoke exhaust effect.

[0004] Existing fire louver structures typically use a linkage structure for driving. Since these fire louvers do not close when there is no fire and remain open for extended periods, the internal linkage structure is prone to corrosion, especially in environments with high humidity. Furthermore, the numerous linkages create significant resistance, which can cause jamming or deformation during operation, thus posing a safety hazard.

[0005] Therefore, fire door louvers are proposed to solve the problems raised in the background art. Summary of the Invention

[0006] To address the problems mentioned in the background section, the present invention provides fire door louvers.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fire door louver, including a limiting frame, wherein a push-turn component is provided on the inner side of the limiting frame, and the push-turn component is used to control the louver structure to turn and close by pushing; a drive component is embedded on the inner side of the front of the limiting frame, and the drive component is used to drive the push-turn component to adjust in the event of a fire.

[0008] The push-flip assembly includes two sets of connecting plates, which are movably located inside the two ends of the limiting frame. The bottom of the connecting plate is equipped with fixing teeth, and the bottom of the fixing teeth is meshed with several sets of combined gears. A rotating shaft is fixedly installed between the two sets of combined gears, and a louvered grille is fixedly installed on the outside of the rotating shaft. The louvered grille is movably located inside the channel in the middle of the limiting frame. A driving inclined plate is fixedly installed on the front of the connecting plate, and an inclined surface is provided on the side of the driving inclined plate near the middle of the limiting frame.

[0009] Preferably, the drive assembly includes a sealing frame, and sealing tubes are fixedly installed at both ends of the sealing frame. A push piston is movably arranged inside the sealing tube. A push rod is fixedly installed at the end of the push piston away from the sealing frame. The push rod passes through the inner side of the sealing tube away from the sealing frame. A storage tank is fixedly arranged above the sealing frame. A push wedge is fixedly installed at the end of the push rod. The push wedge is in close contact with the inclined surface.

[0010] Preferably, an installation plate is welded and installed on the outer side of the lower end of the limiting frame, and bolt holes are opened through the inner side of the four corners of the installation plate. A combined cover plate is fixedly installed on the top of the limiting frame by bolts, and a splicing interface is opened through the center of the front of the combined cover plate.

[0011] Preferably, splicing strips are installed on the front and back sides of the middle of the limiting frame, and the splicing strips are movably combined with the louvered grille. Several sets of limiting holes are opened through the two sides of the limiting frame near the middle, and the limiting holes are located on the outside of the rotating shaft.

[0012] Preferably, a set of movable plates is welded and installed on the back of the two sets of connecting plates, and the movable plates are movably disposed on the inner side of the back of the limiting frame. Seven sets of through holes are opened through the surface of the movable plates. Two sets of through holes are opened at the end of the driving inclined plate away from the inclined surface, and a limiting guide post is movably disposed on the inner side of the through holes. The limiting guide post is fixedly installed on the inner side of the limiting frame. Reinforcing corner seats are welded and installed at the bottom of both ends of the connecting plates and on the inner side of the driving inclined plate and the movable plate.

[0013] Preferably, the top of the sealing frame is provided with a threaded opening, and a fixing plate is welded to the outside of the sealing tube, and the fixing plate is welded to the inside of the limiting frame.

[0014] Preferably, a sealing ring is spliced ​​on the surface of the pushing piston, and the sealing ring is tightly attached to the inner wall of the sealing tube.

[0015] Preferably, a threaded pipe is installed at the bottom of the storage tank, and the threaded pipe is movably installed inside the threaded opening. A supporting membrane is fixedly installed in the middle of the storage tank, and sodium bicarbonate is provided on the top of the supporting membrane.

[0016] Preferably, the two ends of the rotating shaft are fixedly installed with fixed ends, and the fixed ends are fixedly connected to the combined gear.

[0017] Preferably, one side of the louvered grille has a combined inclined surface and an arc-shaped groove, and the other side of the louvered grille has a combined inclined surface and an arc-shaped strip installed thereon. The arc-shaped strip and the arc-shaped groove remain tightly spliced ​​after being flipped.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention, through the combination of a push-to-flip assembly and a limiting frame, enhances the stability of the push-to-adjustment mechanism and avoids the problem of adjustment failure due to connecting shaft corrosion. By setting two sets of connecting plates, the fixed tooth structure at the bottom can mesh with each set of combined gears. When the connecting plate is pushed to the back, the fixed teeth control the combined gears to rotate. During the rotation, the rotating shaft and louvered grille will rotate and adjust. The rotation structure is simple. After flipping 90 degrees, the arc-shaped strip and arc-shaped groove will be tightly combined, which can greatly increase the sealing performance after flipping. Moreover, the adjustment through gear meshing can effectively avoid the problem of device malfunction caused by connecting shaft corrosion.

[0020] This invention, through the coordination of a drive assembly and a drive ramp, facilitates rapid closure during fire, while avoiding device malfunction due to fire. It addresses the limitations of using a push-and-flip assembly for rapid movement of the movable plate structure and the malfunction of electric motors due to power outages or device damage. By incorporating a sealing frame that connects to the sealing tubes at both ends, the internal cavity restricts the push piston. The measured amount of sodium bicarbonate inside the top-mounted storage tank rapidly decomposes under high temperatures, producing a large amount of carbon dioxide. This carbon dioxide fills the internal space, pushing the piston inside the sealing tube. The piston extends outward, and the sealing rings effectively ensure a tight seal. During the piston extension process, the fixedly connected push rod pushes the drive plate at the end to extend outward along the groove on the inner side of the limit frame. The inclined surface of the drive plate will be in close contact with the inclined surface of the drive plate. Under the action of the inclined surface, the drive plate, connecting plate and movable plate will move backward as a whole. During the movement, the fixed teeth at the bottom of the connecting plate can drive the combined gear to rotate. Gas is generated through chemical decomposition reaction to drive the device. This can effectively prevent the louvers from failing to close properly during a fire, thus avoiding the spread of fire. Attached Figure Description

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2This is an exploded view of the limiting frame structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the movable plate structure of the present invention;

[0024] Figure 4 This is a schematic cross-sectional view of the drive component of the present invention;

[0025] Figure 5 This is an exploded view of the closed louvered grille of the present invention;

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the limiting frame of the present invention;

[0027] Figure 7 This is a schematic diagram of the louvered grille opening structure of the present invention.

[0028] In the diagram: 1. Limiting frame; 101. Mounting plate; 102. Bolt hole; 103. Limiting guide post; 104. Limiting hole; 105. Combined cover plate; 106. Splicing interface; 107. Splicing strip; 2. Movable plate; 201. Connecting plate; 202. Fixing tooth; 203. Driving inclined plate; 204. Through hole; 206. Reinforcing corner seat; 3. Sealing tube; 301. Sealing frame; 302. Threaded port; 303. Fixing plate; 4. Pushing inclined block; 401. Pushing rod; 402. Pushing piston; 403. Sealing ring; 5. Storage tank; 501. Threaded tube; 502. Supporting membrane; 503. Sodium bicarbonate; 6. Louvered grid; 601. Rotating shaft; 602. Combined gear; 603. Fixed end. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figures 1 to 7 As shown, the present invention provides a fire door louver, including a limiting frame 1, a push-to-flip assembly is provided on the inner side of the limiting frame 1, and the push-to-flip assembly is used to control the louver structure to flip and close by pushing. A drive assembly is embedded on the inner side of the front of the limiting frame 1, and the drive assembly is used to drive the push-to-flip assembly to adjust in the event of a fire.

[0031] The push-flip assembly includes two sets of connecting plates 201, which are movably located inside the two ends of the limiting frame 1. The bottom of the connecting plate 201 is equipped with a fixing tooth 202, and the bottom of the fixing tooth 202 is meshed with several sets of combined gears 602. A rotating shaft 601 is fixedly installed between the two sets of combined gears 602, and a louvered grille 6 is fixedly installed on the outside of the rotating shaft 601. The louvered grille 6 is movably located inside the channel in the middle of the limiting frame 1. A driving inclined plate 203 is fixedly installed on the front of the connecting plate 201, and an inclined surface is provided on the side of the driving inclined plate 203 near the middle of the limiting frame 1.

[0032] The drive assembly includes a sealing frame 301, and sealing tubes 3 are fixedly installed at both ends of the sealing frame 301. A push piston 402 is movably arranged inside the sealing tube 3. A push rod 401 is fixedly installed at the end of the push piston 402 away from the sealing frame 301. The push rod 401 passes through the inner side of the end of the sealing tube 3 away from the sealing frame 301. A storage tank 5 is fixedly installed above the sealing frame 301. A push inclined block 4 is fixedly installed at the end of the push rod 401. The push inclined block 4 is in close contact with the inclined surface.

[0033] The above scheme employs two sets of connecting plates 201, which mesh with the fixed teeth 202 at the bottom and the combined gears 602. When the connecting plates 201 are pushed to the rear, the fixed teeth 202 control the combined gears 602 to rotate. During this rotation, the rotating shaft 601 and the louvered grille 6 are adjusted. The rotation structure is simple; after a 90-degree rotation, the arc-shaped strips and arc-shaped grooves are tightly combined, greatly increasing the sealing performance after rotation. Furthermore, adjustment via gear meshing effectively prevents device malfunction due to connecting shaft corrosion. A sealing frame 301 connects to the sealing pipes 3 at both ends, and the internal cavity restricts the movement of the piston 402. The quantitative amount of sodium bicarbonate 503 stored inside the top-mounted storage tank 5 decomposes rapidly under high temperatures, producing… A large amount of carbon dioxide fills the internal space, pushing the piston 402 inside the sealing tube 3 outward. The sealing ring 403 effectively ensures the seal. During the outward extension of the piston 402, the fixedly connected push rod 401 pushes the end drive plate 203 along the groove on the inner side of the limit frame 1. The inclined surface of the drive plate 203 will be in close contact with the inclined surface of the drive plate 203. Under the action of the inclined surface, the drive plate 203, the connecting plate 201 and the movable plate 2 will move backward as a whole. During the movement, the fixed teeth 202 at the bottom of the connecting plate 201 can drive the combined gear 602 to rotate. The gas generated by the chemical decomposition reaction drives the device, which can effectively prevent the louvers from failing to close properly during a fire, thus preventing the fire from spreading.

[0034] like Figures 1-3 As shown, an installation plate 101 is welded and installed on the outer side of the lower end of the limiting frame 1, and bolt holes 102 are opened through the inner side of the four corners of the installation plate 101. A combined cover plate 105 is fixedly installed on the top of the limiting frame 1 by bolts, and a splicing interface 106 is opened through the middle of the front of the combined cover plate 105.

[0035] The front and back of the middle part of the limiting frame 1 are respectively equipped with splicing strips 107, and the splicing strips 107 are movably combined with the louvered grille 6. Several sets of limiting holes 104 are opened through the two sides of the limiting frame 1 near the middle part, and the limiting holes 104 are located on the outside of the rotating shaft 601.

[0036] A set of movable plates 2 are welded and installed on the back of the two sets of connecting plates 201. The movable plates 2 are movably set on the inner side of the back of the limiting frame 1. Seven sets of through holes 204 are opened through the surface of the movable plates 2. Two sets of through holes 204 are opened at the end of the driving inclined plate 203 away from the inclined surface. A limiting guide post 103 is movably set on the inner side of the through holes 204. The limiting guide post 103 is fixedly installed on the inner side of the limiting frame 1. Reinforcing corner seats 206 are welded and installed at the bottom of both ends of the connecting plates 201 and the inner side of the driving inclined plate 203 and the movable plate 2.

[0037] Using the above scheme: the slot at the top of the limiting frame 1 is used to restrict the inner structure, and together with the limiting guide post 103, it can restrict the inner pushing structure, effectively increasing the stability of the driving push. The mounting plate 101 can be spliced ​​to the outer area of ​​the fire door, and the bolt structure can be inserted into the inner side of the bolt hole 102, thereby installing the mounting plate 101 and the whole device on the fire door. When the inside of the door is burned and cannot be removed, the whole fire louver structure can be directly removed with tools to facilitate access to the interior, and the combined cover plate 1 05 can be fixed to the top of the limiting frame 1 by bolt structure, thereby achieving the effect of restricting the inner structure. The limiting hole 104 facilitates the installation of the storage tank 5. The installed movable plate 2 can cooperate with the limiting guide post 103 to increase the stability of the connecting plate 201. The through hole 204 can be spliced ​​with the limiting guide post 103 to achieve the effect of lateral restriction. The reinforcing corner seat 206 welded between the connecting plate 201, the driving inclined plate 203 and the movable plate 2 can greatly increase the strength of the movable structure and avoid deformation problems.

[0038] like Figure 4 As shown, a threaded port 302 is installed on the top of the sealing frame 301, and a fixing plate 303 is welded to the outside of the sealing tube 3, and the fixing plate 303 is welded to the inside of the limiting frame 1.

[0039] A sealing ring 403 is spliced ​​on the surface of the piston 402, and the sealing ring 403 is in close contact with the inner wall of the sealing tube 3.

[0040] A threaded pipe 501 is installed at the bottom of the storage tank 5, and the threaded pipe 501 is movably installed inside the threaded opening 302. A support film 502 is fixedly installed in the middle of the storage tank 5, and sodium bicarbonate 503 is provided on the top of the support film 502.

[0041] The above scheme employs a threaded structure on the inner side of the threaded port 302, which can restrict the installed threaded tube 501. The sealing tube 3 can be welded to the inner side of the limiting frame 1 through the installed fixing plate 303, avoiding displacement caused by the pushing force when driving in the event of a fire. The sealing ring 403 is embedded in the groove on the surface of the pushing piston 402. The tight fit of the inner wall of the sealing ring 403 can effectively increase the internal sealing. The threaded tube 501 of the storage tank 5 can be rotated to install the storage tank 5 on the top of the sealing frame 301. The internal support film 502 is used to separate the interior of the storage tank 5. After separation, the internal sealing can be maintained, and the chemical properties of sodium bicarbonate 503 can be prevented from being affected by moisture in the air. When sodium bicarbonate 503 is exposed to a temperature of more than 50 degrees Celsius at close range, it will undergo a chemical reaction, producing carbon dioxide to fill the internal space, thereby achieving the driving effect.

[0042] like Figures 5-7 As shown, fixed ends 603 are fixedly installed at both ends of the rotating shaft 601, and the fixed ends 603 are fixedly connected to the combined gear 602. A combined inclined surface and an arc groove are opened on one side of the louvered grille 6, and a combined inclined surface and an arc strip are installed on the other side of the louvered grille 6. The arc strip and the arc groove remain tightly spliced ​​after being flipped.

[0043] Using the above solution: the rotating shaft 601 and the combined gear 602 can be fixedly connected by the fixed end 603, which can effectively increase the stability of the connection. When the arc-shaped groove and the installed arc-shaped strip are flipped horizontally, the two sets of structures will be in a tight combination. Since the inside of the drive device is in a sealed state, it will always be in a supported state under normal circumstances, avoiding the problem of the louvered grille 6 loosening due to power failure.

[0044] The working principle and usage process of this invention are as follows: First, the limiting frame 1 is spliced ​​from the outside to the inside of the fire door, and the limiting frame 1 is fixed by inserting bolts into the bolt holes 102. Then, the threaded pipe 501 of the storage tank 5 is rotated and installed inside the threaded opening 302. When a fire occurs, the ambient temperature rises sharply, and the high temperature will heat the sodium bicarbonate 503 inside the storage tank 5. The chemical reaction will produce a large amount of carbon dioxide. The carbon dioxide filling the sealed space will simultaneously push the two sets of pistons 402 outward. During the outward expansion process... The push rod 401 will extend the push block 4 at the synchronous control end. Under the action of the inclined plane, it will push the drive inclined plate 203 and the movable plate 2 to move to the back along the limit guide post 103. During the movement, the connecting plate 201 will move to the back in sync. The fixed tooth 202 will directly drive the meshing combined gear 602 to rotate. Since the rotating shaft 601 is in a fixed state, the combined gear 602 will drive the louvered grille 6 to rotate 90 degrees. After the rotation, the arc groove and arc strip will be tightly combined to form a closed plate structure, thereby separating the inside and outside and preventing the spread of flame inside.

[0045] 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.

[0046] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fire door louver, including a limiting frame (1), characterized in that: The inner side of the limiting frame (1) is provided with a push-turn component, and the push-turn component is used to control the louver structure to turn and close by pushing. The inner side of the front of the limiting frame (1) is provided with a drive component, and the drive component is used to drive the push-turn component to adjust in the event of a fire. The push-flip assembly includes two sets of connecting plates (201), and the connecting plates (201) are movably located inside the two ends of the limiting frame (1). The bottom of the connecting plate (201) is equipped with a fixing tooth (202), and the bottom of the fixing tooth (202) is meshed with several sets of combined gears (602). A rotating shaft (601) is fixedly installed between the two sets of combined gears (602), and a louvered grille (6) is fixedly installed on the outside of the rotating shaft (601). The louvered grille (6) is movably located inside the channel in the middle of the limiting frame (1). A driving inclined plate (203) is fixedly installed on the front of the connecting plate (201), and an inclined surface is provided on the side of the driving inclined plate (203) near the middle of the limiting frame (1).

2. The fire door louver according to claim 1, characterized in that: The drive assembly includes a sealing frame (301), and sealing tubes (3) are fixedly installed at both ends of the sealing frame (301). A push piston (402) is movably arranged inside the sealing tube (3). A push rod (401) is fixedly installed at the end of the push piston (402) away from the sealing frame (301). The push rod (401) is disposed through the inner side of the end of the sealing tube (3) away from the sealing frame (301). A storage tank (5) is fixedly arranged above the sealing frame (301). A push inclined block (4) is fixedly installed at the end of the push rod (401). The push inclined block (4) is in close contact with the inclined surface.

3. The fire door louver according to claim 1, characterized in that: An installation plate (101) is welded to the outer side of the lower end of the limiting frame (1), and bolt holes (102) are opened through the inner side of the four corners of the installation plate (101). A combined cover plate (105) is fixedly installed on the top of the limiting frame (1) by bolts, and a splicing interface (106) is opened through the middle of the front side of the combined cover plate (105).

4. The fire door louver according to claim 1, characterized in that: The front and back sides of the middle part of the limiting frame (1) are respectively equipped with splicing strips (107), and the splicing strips (107) are movably combined with the louvered grille (6). Several sets of limiting holes (104) are opened through the two sides of the limiting frame (1) near the middle part, and the limiting holes (104) are located outside the rotating shaft (601).

5. The fire door louver according to claim 1, characterized in that: A set of movable plates (2) are welded to the back of the two sets of connecting plates (201), and the movable plates (2) are movably disposed on the inner side of the back of the limiting frame (1). The surface of the movable plates (2) is provided with seven sets of through holes (204). The end of the driving inclined plate (203) away from the inclined surface is provided with two sets of through holes (204), and the inner side of the through holes (204) is movably provided with a limiting guide post (103). The limiting guide post (103) is fixedly installed on the inner side of the limiting frame (1). The bottom of both ends of the connecting plates (201) and the inner side of the driving inclined plate (203) and the movable plate (2) are welded to reinforced corner seats (206).

6. The fire door louver according to claim 2, characterized in that: The top of the sealing frame (301) is fitted with a threaded port (302), and a fixing plate (303) is welded to the outside of the sealing tube (3), and the fixing plate (303) is welded to the inside of the limiting frame (1).

7. The fire door louver according to claim 2, characterized in that: The surface of the push piston (402) is fitted with a sealing ring (403), and the sealing ring (403) is in close contact with the inner wall of the sealing tube (3).

8. The fire door louver according to claim 2, characterized in that: The bottom of the storage tank (5) is equipped with a threaded pipe (501), and the threaded pipe (501) is movably installed inside the threaded opening (302). A support film (502) is fixedly installed in the middle of the storage tank (5), and sodium bicarbonate (503) is provided on the top of the support film (502).

9. The fire door louver according to claim 1, characterized in that: The rotating shaft (601) has fixed ends (603) fixedly installed at both ends, and the fixed ends (603) are fixedly connected to the combined gear (602).

10. The fire door louver according to claim 9, characterized in that: One side of the louvered grille (6) is provided with a combined inclined surface and an arc-shaped groove, and the other side of the louvered grille (6) is provided with a combined inclined surface and an arc-shaped strip installed. The arc-shaped strip and the arc-shaped groove remain tightly spliced ​​after being flipped.

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