Fire smoke exhaust louver regulating mechanism

Abstract

The utility model relates to the field of fire-fighting smoke exhaust, especially a fire-fighting smoke exhaust louver ventilation adjusting mechanism. Including ventilation window, the inside of ventilation window is equipped with a plurality of louver body, both sides of ventilation window all rotatoryly connected with a plurality of pivot, the side fixedly connected with fixed block of pivot is close to louver body, both sides of louver body all are provided with the connecting mechanism for with fixed block connection, the side outer wall of ventilation window is equipped with the adjusting device for to louver body angle adjustment, the adjusting device includes a plurality of drive link, the drive link is fixedly connected with pivot. The fire-fighting smoke exhaust louver ventilation adjusting mechanism provided by the utility model has the advantages that through the operation of adjusting device, reaches the synchronous, stable adjustment of the inclination angle of multiple louver body, and the self-locking cooperation of worm wheel and worm makes louver body keep stable angle after adjusting, thereby realizes the advantage that the ventilation volume is accurately controlled.

Description

Technical Field

[0001] This utility model relates to the field of fire smoke exhaust, and in particular to a fire smoke exhaust louver ventilation and adjustment mechanism. Background Technology

[0002] Fire-fighting smoke exhaust louvers are an important component of building fire-fighting smoke exhaust systems. They are typically installed on building exterior walls, corridors, stairwells, or smoke exhaust shafts to exhaust smoke and heat in emergencies such as fires, ensuring safe evacuation of personnel and facilitating fire rescue operations. Under normal conditions, fire-fighting smoke exhaust louvers can also function as ventilation regulating devices, controlling the airflow between indoors and outdoors by adjusting the louver angle to meet daily ventilation needs.

[0003] Existing technologies, such as the utility model patent with publication number CN209672561U, disclose an angle-adjustable ventilation device for buildings. This patent includes a ventilation frame, louvers, and an adjustment assembly. Several louvers are installed within the ventilation frame. The adjustment assembly is connected to the louvers and drives them to rotate. The adjustment assembly includes a support frame, several worm gears mounted parallel to the support frame via a connecting shaft, a worm cooperating with the worm gears, a bevel gear I vertically fixed to the bottom of the worm gear, and a bevel gear II cooperating with the bevel gear I. The bevel gear II is connected to a handle. By rotating the handle, all the louvers can rotate synchronously, controlling the opening direction and size of the louvers. The control process is convenient, and the opening angle of the louvers can be controlled at any time according to changes in external weather or wind speed, providing greater controllability.

[0004] The following defects were found in the above-mentioned aspects: Existing fire-fighting smoke exhaust louver ventilation adjustment mechanisms typically use a linkage mechanism to drive multiple louvers to rotate synchronously in order to adjust the louver angle. However, after long-term use, traditional linkage-type adjustment mechanisms are prone to inaccurate louver angle adjustment due to wear and increased clearance at the linkage hinges. This results in angle deviations between the individual louvers, affecting the precise control of ventilation volume and smoke exhaust effect. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where traditional linkage-type adjustment devices, after long-term use, suffer from wear and increased gaps at the linkage hinges, leading to inaccurate louver angle adjustment, angle deviations between louvers, and affecting the precise control of ventilation volume and smoke extraction effect.

[0006] To solve the above-mentioned technical problems, this utility model provides a fire-fighting smoke exhaust louver ventilation adjustment mechanism, including a ventilation window. The ventilation window has several louver bodies inside. Several rotating shafts are rotatably connected to both sides of the ventilation window. A fixing block is fixedly connected to the side of each rotating shaft near the louver body. Connecting mechanisms for connecting to the fixing blocks are provided on both sides of each louver body. An adjustment device for adjusting the angle of the louver bodies is provided on one side of the outer wall of the ventilation window. The adjustment device includes several drive rods, which are fixedly connected to the rotating shafts. A worm gear is fixedly connected to the outer wall of each drive rod, and a worm is meshed on one side of the worm gear. A connecting shaft is provided on the side of the ventilation window near the worm gear, and the outer wall of the connecting shaft is fixedly connected to the worm.

[0007] The aforementioned components achieve the following effects: a detachable connection between the louver body and the fixed block is realized through the connecting mechanism; and the angles of multiple louver bodies are synchronously adjusted through the drive rod, worm gear, worm and connecting shaft in the adjusting device, thereby achieving the purpose of adjusting the tilt angle and ventilation volume of the louver body. Furthermore, the worm gear and worm have a self-locking effect, which allows the louver body to maintain a stable angle after adjustment.

[0008] Preferably, the ventilation window is provided with a mounting cover on the side near the worm gear, and a fixing ring plate is fixedly connected to the outer wall of the mounting cover on the side near the ventilation window. The fixing ring plate is fixedly connected to the ventilation window by bolts, and the inner wall of the mounting cover is rotatably connected to the connecting shaft.

[0009] The aforementioned components achieve the following effects: by providing installation and protection space for the connecting shaft and transmission components such as worm gear and worm through the mounting cover, and by using the fixing ring plate and bolts to achieve a detachable fixed connection between the mounting cover and the ventilation window, which facilitates assembly and maintenance.

[0010] Preferably, a driven bevel gear is fixedly sleeved on the bottom outer wall of the connecting shaft, and a driving bevel gear meshes with one side of the driven bevel gear.

[0011] The effect achieved by the above components is as follows: through the meshing of the driven bevel gear and the driving bevel gear, the direction of power is changed and transmitted; when the driving bevel gear rotates, the driving bevel gear drives the driven bevel gear to rotate, and the driven bevel gear drives the connecting shaft to rotate, thereby providing power for the synchronous rotation of multiple worm gears, so that the adjustment device can stably drive the louver body to adjust the angle.

[0012] Preferably, a servo motor is fixedly connected to the inner wall of the mounting cover, and the output end of the servo motor is fixedly connected to the drive bevel gear.

[0013] The effect achieved by the above components is as follows: the servo motor provides automatic driving force to the adjustment device. When the output end of the servo motor rotates, it drives the active bevel gear to rotate, which in turn drives the connecting shaft to rotate through the driven bevel gear, causing multiple worm gears to rotate synchronously, and finally driving the louver body to rotate. The use of a servo motor can realize precise control and automatic adjustment of the louver body angle, improving the ease of use and response speed of the fire smoke exhaust louver ventilation adjustment device.

[0014] Preferably, the connecting mechanism includes a connecting rod that is slidably connected to the louver body. Both sides of the louver body have sliding grooves that are adapted to the connecting rod. One end of the connecting rod extending into the sliding groove is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner wall of the sliding groove. A fixing block has a connecting hole near the louver body that is adapted to the connecting rod. A countersunk screw hole is formed at the top of the fixing block, and an mounting screw hole is formed at the top of the connecting rod. A fixing bolt is threaded onto the inner wall of the countersunk screw hole, and the fixing bolt is adapted to the mounting screw hole.

[0015] The aforementioned components achieve the following effects: They provide sliding space for the connecting rod via a groove, and utilize the spring force to allow the connecting rod to automatically extend into the connecting hole on the fixing block, achieving rapid positioning and initial connection between the louver body and the fixing block; once the connecting rod enters the connecting hole, the mounting screw hole aligns with the countersunk screw hole, and tightening the fixing bolt allows it to enter the mounting screw hole through the countersunk screw hole, locking the connecting rod and thus firmly fixing the louver body to the fixing block; when it is necessary to disassemble the louver body, simply unscrew the fixing bolt and push the connecting rod away from the connecting hole, facilitating the replacement and maintenance of the louver body.

[0016] Preferably, guide grooves are provided on both sides of the top of the louver body, the guide grooves are connected to the sliding grooves, a movable rod is slidably connected to the inner wall of the guide groove, the movable rod is fixedly connected to the docking rod, and a toggle ball is fixedly connected to one end of the movable rod that extends out of the guide groove.

[0017] The aforementioned components achieve the following effects: they provide a sliding guide for the movable rod via the guide groove, and connect the actuating ball and the docking rod using the movable rod; when the louver body needs to be disassembled, the operator can pull the actuating ball, which, through the movable rod, drives the docking rod to overcome the spring force and move into the groove, causing the docking rod to disengage from the docking hole, thereby releasing the connection between the louver body and the fixing block; this structure is easy to operate, allowing for direct control of the docking rod's movement from the outside of the louver body, thus improving disassembly and assembly efficiency.

[0018] Preferably, positioning grooves are provided on both sides of the louver body, and the positioning grooves are connected to the sliding grooves. Two positioning strips are fixedly connected to the side of the fixing block near the louver body, and the positioning strips are adapted to the positioning grooves.

[0019] The aforementioned components achieve the following effects: through the cooperation of the positioning groove and the positioning strip, they play a guiding and positioning role during the installation of the louver body; when the replaced louver body is pushed to allow the positioning strip to enter the positioning groove, the relative position between the louver body and the fixing block is accurate, allowing the mating hole to be smoothly aligned with the mating rod, thereby improving installation efficiency and connection reliability; at the same time, the cooperation between the positioning strip and the positioning groove can also enhance the connection stability between the louver body and the fixing block, reducing the shaking of the louver body during use.

[0020] Compared with related technologies, the fire-fighting smoke exhaust louver ventilation regulating mechanism provided by this utility model has the following beneficial effects: During daily use, the tilt angle of multiple louver bodies can be synchronously and stably adjusted by operating the adjustment device. The self-locking cooperation of the worm gear and worm shaft ensures that the louver bodies maintain a stable angle after adjustment, thereby achieving precise control of ventilation volume.

[0021] When the louver body is damaged and needs to be replaced, the connection mechanism can be operated to quickly disengage or connect the connecting rod with the connecting hole on the fixing block, thereby facilitating the quick and easy disassembly and installation of the louver body and improving maintenance efficiency. Attached Figure Description

[0022] Figure 1 A structural schematic diagram of a fire-fighting smoke exhaust louver ventilation adjustment mechanism provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the regulating device. Figure 3 for Figure 1 The diagram shows the structural connection between the louver body and the fixing block. Figure 4 for Figure 1 The diagram shows the structure of the fixing block. Figure 5 for Figure 1 The diagram shows the structure of the connecting mechanism. Figure 6 for Figure 2 The enlarged structural diagram at point A is shown.

[0023] The diagram is labeled as follows: 1. Ventilation window; 2. Connecting mechanism; 201. Docking hole; 202. Positioning strip; 203. Fixed countersunk screw hole; 204. Guide groove; 205. Spring; 206. Positioning groove; 207. Slide groove; 208. Docking rod; 209. Actuating ball; 210. Fixing bolt; 211. Movable rod; 212. Mounting screw hole; 3. Louver body; 4. Adjustment device; 41. Servo motor; 42. Driving bevel gear; 43. Driven bevel gear; 44. Worm gear; 45. Worm; 46. Connecting shaft; 47. Drive rod; 48. Mounting cover; 49. Fixed ring plate; 5. Fixing block; 6. Rotating shaft. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0026] Please see Figures 1 to 6 The present invention provides a fire-fighting smoke exhaust louver ventilation adjustment mechanism, including a ventilation window 1, a plurality of louver bodies 3 inside the ventilation window 1, a plurality of rotating shafts 6 rotatably connected to both sides of the ventilation window 1, a fixing block 5 fixedly connected to the side of the rotating shaft 6 near the louver body 3, a connecting mechanism 2 for connecting with the fixing block 5 on both sides of the louver body 3, and an adjustment device 4 for adjusting the angle of the louver body 3 on one side of the outer wall of the ventilation window 1.

[0027] In the embodiments of this utility model, please refer to Figure 2 and Figure 6The adjusting device 4 includes several drive rods 47, which are fixedly connected to the rotating shaft 6. A worm gear 44 is fixedly connected to the outer wall of the drive rod 47, and a worm 45 meshes with one side of the worm gear 44. A connecting shaft 46 is provided on the side of the ventilation window 1 near the worm gear 44, and the outer wall of the connecting shaft 46 is fixedly connected to the worm 45. A detachable connection between the louver body 3 and the fixing block 5 is achieved through the connecting mechanism 2. The simultaneous adjustment of the angles of multiple louver bodies 3 is achieved through the drive rods 47, worm gear 44, worm 45, and connecting shaft 46 in the adjusting device 4, thus adjusting the tilt angle and ventilation volume of the louver body 3. The worm gear 44 and worm 45 have a self-locking effect, ensuring that the louver body 3 maintains a stable angle after adjustment. A mounting cover 48 is provided on the side of the ventilation window 1 near the worm gear 44. A fixing ring plate 49 is fixedly connected to the outer wall of the mounting cover 48 near the ventilation window 1. The fixing ring plate 49 is fixedly connected to the ventilation window 1 by bolts. The inner wall of the mounting cover 48 is rotatably connected to the connecting shaft 46. The mounting cover 48 provides installation and protection space for the connecting shaft 46 and transmission components such as the worm gear 44 and worm 45. A fixed ring plate 49, in conjunction with bolts, enables a detachable fixed connection between the mounting cover 48 and the ventilation window 1, facilitating assembly and maintenance. A driven bevel gear 43 is fixedly sleeved on the bottom outer wall of the connecting shaft 46, and a driving bevel gear 42 meshes with one side of the driven bevel gear 43. The meshing of the driven bevel gear 43 and the driving bevel gear 42 changes and transmits power. When the driving bevel gear 42 rotates, it drives the driven bevel gear 43 to rotate, which in turn drives the connecting shaft 46 to rotate, thus providing power for the synchronous rotation of multiple worm gears 45, enabling the adjusting device 4 to stably drive the louver body 3 for angle adjustment. A servo motor 41 is fixedly connected to the inner wall of the mounting cover 48, and the output end of the servo motor 41 is fixedly connected to the driving bevel gear 42. The servo motor 41 provides automatic driving force to the adjustment device 4. When the output end of the servo motor 41 rotates, it drives the active bevel gear 42 to rotate, which in turn drives the connecting shaft 46 to rotate through the driven bevel gear 43, causing multiple worm gears 45 to rotate synchronously, and finally driving the louver body 3 to rotate. The use of the servo motor 41 can realize precise control and automatic adjustment of the angle of the louver body 3, improving the ease of use and response speed of the fire smoke exhaust louver ventilation adjustment device 4.

[0028] In the embodiments of this utility model, please refer to Figures 3 to 5The connecting mechanism 2 includes a docking rod 208, which is slidably connected to the louver body 3. Both sides of the louver body 3 are provided with sliding grooves 207, which are adapted to the docking rod 208. One end of the docking rod 208 extending into the sliding groove 207 is fixedly connected to a spring 205, and the other end of the spring 205 is fixedly connected to the inner wall of the sliding groove 207. The fixing block 5 is provided with a docking hole 201 near the louver body 3, which is adapted to the docking rod 208. The top of the fixing block 5 is provided with a countersunk screw hole 203, and the top of the docking rod 208 is provided with an installation screw hole 212. The inner wall of the countersunk screw hole 203 is threaded with a fixing bolt 210, which is adapted to the installation screw hole 212. The sliding groove 207 provides sliding space for the connecting rod 208. The elastic force of the spring 205 allows the connecting rod 208 to automatically extend into the connecting hole 201 on the fixing block 5, realizing quick positioning and initial connection between the louver body 3 and the fixing block 5. After the connecting rod 208 enters the connecting hole 201, the mounting screw hole 212 is aligned with the fixing countersunk screw hole 203. Tightening the fixing bolt 210 allows the fixing bolt 210 to enter the mounting screw hole 212 through the fixing countersunk screw hole 203, which can lock the connecting rod 208, thereby firmly fixing the louver body 3 to the fixing block 5. When it is necessary to disassemble the louver body 3, simply unscrew the fixing bolt 210 and push the connecting rod 208 away from the connecting hole 201, which facilitates the replacement and maintenance of the louver body 3. Guide grooves 204 are provided on both sides of the top of the louver body 3. The guide grooves 204 are connected to the slide grooves 207. A movable rod 211 is slidably connected to the inner wall of the guide grooves 204. The movable rod 211 is fixedly connected to the docking rod 208. A toggle ball 209 is fixedly connected to one end of the movable rod 211 that extends out of the guide grooves 204. The guide grooves 204 provide sliding guidance for the movable rod 211, and the movable rod 211 connects the toggle ball 209 to the docking rod 208. When it is necessary to disassemble the louver body 3, the operator can pull the toggle ball 209. The toggle ball 209 drives the docking rod 208 to move into the slide groove 207 against the elastic force of the spring 205 through the movable rod 211, so that the docking rod 208 disengages from the docking hole 201, thereby releasing the connection between the louver body 3 and the fixing block 5. This structure is easy to operate and allows direct control of the docking rod 208 from the outside of the louver body 3, improving the efficiency of disassembly and assembly. Positioning grooves 206 are provided on both sides of the louver body 3. The positioning grooves 206 are connected to the sliding grooves 207. Two positioning strips 202 are fixedly connected to the side of the fixing block 5 near the louver body 3. The positioning strips 202 are adapted to the positioning grooves 206.The positioning groove 206 and the positioning strip 202 work together to guide and position the louver body 3 during installation. When the replaced louver body 3 is pushed to allow the positioning strip 202 to enter the positioning groove 206, the relative position between the louver body 3 and the fixing block 5 is accurate, allowing the mating hole 201 to be smoothly aligned with the mating rod 208, thereby improving installation efficiency and connection reliability. At the same time, the positioning strip 202 and the positioning groove 206 work together to enhance the connection stability between the louver body 3 and the fixing block 5, reducing the shaking of the louver body 3 during use.

[0029] The working principle of the fire-fighting smoke exhaust louver ventilation adjustment mechanism provided by this utility model is as follows: During use, when it is necessary to adjust the ventilation volume, the servo motor 41 is started. The output end of the servo motor 41 rotates, driving the active bevel gear 42 to rotate. The active bevel gear 42 drives the connecting shaft 46 to rotate through the driven bevel gear 43. When the connecting shaft 46 rotates, it drives multiple worm gears 45 to rotate synchronously. When the worm gears 45 rotate, they drive the worm wheel 44 to rotate. The worm wheel 44 rotates, driving the drive rod 47 to rotate accordingly. When the drive rod 47 rotates, it drives the rotating shaft 6, causing the rotating shaft 6 to drive the fixed block 5 to rotate. The fixed block 5 then drives the louver body 3 to rotate accordingly, thereby adjusting the tilt angle of the louver body 3 and thus achieving ventilation volume adjustment. Through the self-locking cooperation between the worm wheel 44 and the worm gear 45, the louver body 3 can maintain a stable angle after adjustment, reducing angle deviation caused by airflow impact or external force.

[0030] When the louver body 3 is damaged and needs to be replaced, first unscrew the fixing bolt 210 to disable the fixing bolt 210 to the connecting rod 208. Then pull the actuating ball 209. The actuating ball 209 drives the connecting rod 208 to move through the movable rod 211, so that the connecting rod 208 overcomes the elastic force of the spring 205 and moves into the slide groove 207 until the connecting rod 208 disengages from the connecting hole 201 on the fixing block 5. At this time, the connection between the louver body 3 and the fixing block 5 is released. Then, pull the louver body 3 along the positioning strip 202 to separate the positioning groove 206 from the positioning strip 202, thereby disassembling the louver body 3.

[0031] During installation, push the replaced louver body 3 so that the positioning strip 202 on the fixing block 5 enters the positioning groove 206 on the louver body 3 to achieve initial positioning and guidance; when the docking hole 201 is aligned with the docking rod 208, the reset action of the spring 205 pushes the docking rod 208 into the docking hole 201, and ensures that the mounting screw hole 212 is aligned with the fixing countersunk screw hole 203; then tighten the fixing bolt 210 so that the fixing bolt 210 enters the mounting screw hole 212 through the fixing countersunk screw hole 203 to fix the docking rod 208, and then fix the louver body 3, completing the replacement and installation of the louver body 3.

[0032] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fire-fighting smoke exhaust louver ventilation and regulating mechanism, characterized in that, The ventilation window (1) includes a ventilation window (1) with several louver bodies (3) inside. Several rotating shafts (6) are rotatably connected to both sides of the ventilation window (1). A fixing block (5) is fixedly connected to the side of the rotating shaft (6) near the louver body (3). A connecting mechanism (2) for connecting with the fixing block (5) is provided on both sides of the louver body (3). An adjustment device (4) for adjusting the angle of the louver body (3) is provided on one side of the outer wall of the ventilation window (1). The connecting mechanism (2) includes a connecting rod (208). The connecting rod (208) is slidably connected to the louver body (3). A sliding groove (207) is provided on both sides of the louver body (3). 7) Adapted to the connecting rod (208), one end of the connecting rod (208) extending into the slide groove (207) is fixedly connected to a spring (205), and the other end of the spring (205) is fixedly connected to the inner wall of the slide groove (207). The fixing block (5) is provided with a connecting hole (201) near the louver body (3). The connecting hole (201) is adapted to the connecting rod (208). The top of the fixing block (5) is provided with a countersunk screw hole (203). The top of the connecting rod (208) is provided with an installation screw hole (212). The inner wall of the countersunk screw hole (203) is threaded with a fixing bolt (210). The fixing bolt (210) is adapted to the installation screw hole (212).

2. The fire-fighting smoke exhaust louver ventilation regulating mechanism according to claim 1, characterized in that, The adjusting device (4) includes several drive rods (47), which are fixedly connected to the rotating shaft (6). A worm gear (44) is fixedly connected to the outer wall of the drive rod (47), and a worm (45) is meshed on one side of the worm gear (44). A connecting shaft (46) is provided on the side of the ventilation window (1) near the worm gear (44). The outer wall of the connecting shaft (46) is fixedly connected to the worm (45). A mounting cover (48) is provided on the side of the ventilation window (1) near the worm gear (44). A fixing ring plate (49) is fixedly connected to the outer wall of the mounting cover (48) near the ventilation window (1). The fixing ring plate (49) is fixedly connected to the ventilation window (1) by bolts. The inner wall of the mounting cover (48) is rotatably connected to the connecting shaft (46).

3. The fire-fighting smoke exhaust louver ventilation regulating mechanism according to claim 2, characterized in that, The bottom outer wall of the connecting shaft (46) is fixedly sleeved with a driven bevel gear (43), and a driving bevel gear (42) meshes with one side of the driven bevel gear (43).

4. The fire-fighting smoke exhaust louver ventilation regulating mechanism according to claim 2, characterized in that, A servo motor (41) is fixedly connected to the inner wall of the mounting cover (48), and the output end of the servo motor (41) is fixedly connected to the active bevel gear (42).

5. A fire-fighting smoke exhaust louver ventilation regulating mechanism according to claim 1, characterized in that, The top two sides of the louver body (3) are provided with guide grooves (204), the guide grooves (204) are connected to the sliding grooves (207), the inner wall of the guide grooves (204) is slidably connected with a movable rod (211), the movable rod (211) is fixedly connected with a connecting rod (208), and a toggle ball (209) is fixedly connected to one end of the movable rod (211) that extends out of the guide grooves (204).

6. A fire-fighting smoke exhaust louver ventilation regulating mechanism according to claim 1, characterized in that, The louver body (3) has positioning grooves (206) on both sides. The positioning grooves (206) are connected to the sliding grooves (207). The fixing block (5) has two positioning strips (202) fixedly connected to the side of the louver body (3) near the louver body (3). The positioning strips (202) are adapted to the positioning grooves (206).

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