Fire-fighting ventilation and smoke exhaust device

Abstract

The utility model discloses a fire-fighting ventilation and smoke exhaust device, which relates to the technical field of ventilation and smoke exhaust devices, and comprises a mounting mechanism, the mounting mechanism comprises a mounting base, the lower part of the mounting base is fixedly connected with a top smoke exhaust mechanism, the top smoke exhaust mechanism comprises a first shell, the interior of the first shell is fixedly connected with a first motor, and the interior of the first shell is fixedly connected with a second motor. A first fan blade is fixedly connected to the output end of the first motor, a connecting frame is fixedly connected to the side face of the mounting base, and a connecting mechanism is fixedly connected to the bottom of the connecting frame. According to the building fire extinguishing device, the whole building fire extinguishing device is installed inside a building through the installation base, when a fire disaster occurs, the first motor drives the first fan blades to rotate, top-layer smoke inside the building is exhausted, then the second motor drives the second fan blades to rotate, and middle-layer smoke inside the building is exhausted; therefore, the overall smoke exhaust performance is improved, and smoke at different floor heights in a building can be fully and rapidly exhausted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ventilation and smoke exhaust device technical field especially relates to a fire ventilation and smoke exhaust device. BACKGROUND

[0002] The fire ventilation and smoke exhaust device is a device combination playing a key role in the building fire fighting system, which transports smoke to the smoke exhaust duct through the smoke exhaust fan, and discharges it through the smoke exhaust duct. The role of the fire ventilation and smoke exhaust device is extremely important. In the event of a fire, it can quickly discharge a large amount of smoke and toxic gases generated by the fire, providing a clear line of sight and a relatively safe environment for personnel evacuation and fire rescue, and providing protection for rescue and escape.

[0003] As the publication number: CN221349326U discloses a fire ventilation and smoke exhaust device, which comprises a smoke exhaust pipe, a transmission box fixedly connected to the top of the smoke exhaust pipe, a bidirectional motor fixedly installed on the transmission box, a transmission shaft fixedly connected to the output shaft of the bidirectional motor on both sides, a cleaning assembly provided on the transmission shaft, a support box fixedly connected to the inner wall of the bottom of the smoke exhaust pipe, an electric motor fixedly installed on the support box, a transmission rod fixedly connected to the output shaft of the electric motor, and a transmission assembly provided on the transmission rod.

[0004] However, in the prior art, when a fire occurs, the smoke flows upward and accumulates at the top of the building space, so the smoke exhaust fan in most ventilation and smoke exhaust devices is installed at the top of the building. However, in actual fire situations, the smoke inside the building is still relatively dispersed, and the high smoke concentration at the top does not mean that there is no smoke in other height areas in the vertical direction inside the building. Since the smoke exhaust fan is installed at the top of the building, the smoke with low concentration in the middle layer cannot be discharged in time, which still hinders the escape and rescue process. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems in the prior art that when a fire occurs, the smoke flows upward and accumulates at the top of the building space, so the smoke exhaust fan in most ventilation and smoke exhaust devices is installed at the top of the building. However, in actual fire situations, the smoke inside the building is still relatively dispersed, and the high smoke concentration at the top does not mean that there is no smoke in other height areas in the vertical direction inside the building. Since the smoke exhaust fan is installed at the top of the building, the smoke with low concentration in the middle layer cannot be discharged in time, which still hinders the escape and rescue process, and proposes a fire ventilation and smoke exhaust device.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a fire ventilation and smoke exhaust device, including installation mechanism, the installation mechanism includes installation base, the installation base lower part fixedly connected with top smoke exhaust mechanism, the top smoke exhaust mechanism includes no.

[0007] Preferably, the slide rail is internally fixedly connected with a guide rod, and the sliding block is slidably inserted with the guide rod.

[0008] Preferably, the sliding block is fixedly connected with springs on both sides.

[0009] Preferably, the connecting plate is fixedly connected with a mounting bracket on the upper portion, and the connecting shaft is rotatably connected with the mounting bracket.

[0010] Preferably, the connecting plate is fixedly connected with two speed reducers on the upper portion, and the two speed reducers are symmetrically distributed on both ends of the connecting shaft.

[0011] Preferably, the cam is located below the limiting plate.

[0012] Compared with the prior art, the utility model has the advantages and positive effects that:

[0013] 1. In this utility model, the entire unit is installed inside the building by means of a mounting base. When a fire occurs, the No. 1 motor drives the No. 1 fan blade to rotate to exhaust smoke from the top floor of the building. Then, the No. 2 motor drives the No. 2 fan blade to rotate to exhaust smoke from the middle floor of the building, thereby improving the overall smoke exhaust performance and enabling the full and rapid exhaust of smoke from different floors inside the building.

[0014] 2. In this utility model, during the process of the No. 2 motor driving the No. 2 fan blade to rotate, the No. 2 motor will also drive the No. 1 pulley, the connecting belt and the No. 2 pulley to rotate. At this time, the No. 2 pulley drives the connecting shaft to rotate, and the speed of the connecting shaft is reduced by the reducer. At this time, the reducer drives the cam to rotate. During the rotation of the cam, when the cam's protruding end enters the limit plate, the connecting plate will drive the middle smoke exhaust mechanism to move downward, thereby reducing the height of the middle smoke exhaust mechanism. Through the rotation of the cam, the middle smoke exhaust mechanism performs a reciprocating motion of moving up and down, thereby increasing the range of smoke exhaust from the building interior by the middle smoke exhaust mechanism and improving the overall smoke exhaust range. Attached Figure Description

[0015] Figure 1 This utility model provides a first three-dimensional structural diagram of a fire ventilation and smoke exhaust device;

[0016] Figure 2 This utility model provides a second three-dimensional structural diagram of a fire ventilation and smoke exhaust device;

[0017] Figure 3 This utility model provides a front view structural diagram of a fire ventilation and smoke exhaust device;

[0018] Figure 4 This utility model provides a three-dimensional cross-sectional structural diagram of the slide rail in a fire ventilation and smoke exhaust device;

[0019] Figure 5 This utility model provides a three-dimensional structural diagram of the No. 1 belt pulley in a fire ventilation and smoke exhaust device.

[0020] Legend: 1. Installation mechanism; 11. Mounting base; 12. Connecting frame; 2. Top smoke exhaust mechanism; 21. Housing No. 1; 22. Motor No. 1; 23. Fan No. 1; 3. Connecting mechanism; 31. Slide rail; 32. Slider; 33. Guide rod; 34. Spring; 4. Reciprocating mechanism; 41. Fixing frame; 42. Connecting plate; 43. Reducer; 44. Cam; 45. Limiting plate; 46. Pulley No. 1; 47. Connecting belt; 48. Pulley No. 2; 49. Connecting shaft; 5. Middle smoke exhaust mechanism; 51. Housing No. 2; 52. Motor No. 2; 53. Fan No. 2; 6. Main smoke exhaust pipe; 7. Connecting hose. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figures 1-5 As shown, this utility model provides a fire ventilation and smoke exhaust device, including an installation mechanism 1. The installation mechanism 1 includes an installation base 11. A top smoke exhaust mechanism 2 is fixedly connected to the lower part of the installation base 11. The top smoke exhaust mechanism 2 includes a first housing 21. A first motor 22 is fixedly connected inside the first housing 21. A first fan blade 23 is fixedly connected to the output end of the first motor 22. A connecting frame 12 is fixedly connected to the side of the installation base 11. A connecting mechanism 3 is fixedly connected to the bottom of the connecting frame 12. A reciprocating mechanism 4 is fixedly connected to the inner side of the connecting mechanism 3. The reciprocating mechanism 4 includes a fixed frame 41, a connecting plate 42, and a first pulley 46. The fixed frame 41 is fixedly connected to the inner side of the connecting frame 12, and a limit plate 45 is fixedly connected to the lower part of the fixed frame 41. The connecting plate 42 is fixedly connected to the slider 32, and a reducer 43 is fixedly connected to the upper part of the connecting plate 42. A cam 44 is fixedly connected to the output end of the reducer 43, and the input end of the reducer 43 is fixedly connected to the slider 32. A connecting shaft 49 is connected, and a second pulley 48 is fixedly connected to the middle of the connecting shaft 49. A connecting belt 47 is movably connected to the surface of the second pulley 48. A middle smoke exhaust mechanism 5 is fixedly connected to the lower part of the connecting plate 42. The middle smoke exhaust mechanism 5 includes a second housing 51. A second motor 52 is fixedly connected inside the second housing 51. A second fan blade 53 is fixedly connected to the output end of the second motor 52, and the output end of the second motor 52 is fixedly connected to a first pulley 46. The first pulley 46 is movably connected to the connecting belt 47. A smoke exhaust main pipe 6 is fixedly connected to the end of the first housing 21. A connecting hose 7 is fixedly connected to the end of the second motor 52. The connecting hose 7 is fixedly connected to the smoke exhaust main pipe 6. A mounting bracket is fixedly connected to the upper part of the connecting plate 42. The connecting shaft 49 is rotatably connected to the mounting bracket. Two reducers 43 are fixedly connected to the upper part of the connecting plate 42. The two reducers 43 are symmetrically distributed at both ends of the connecting shaft 49. A cam 44 is located below the limit plate 45.

[0024] The specific settings and effects of the embodiment are as follows. The whole is installed in the building through the mounting base 11. When a fire occurs, the first fan blade 23 is driven to rotate by the first motor 22 to perform smoke exhaust on the top layer of smoke in the building. The second fan blade 53 is driven to rotate by the second motor 52 to perform smoke exhaust on the middle layer of smoke in the building, thereby improving the overall smoke exhaust performance and fully and quickly exhausting the smoke at different heights in the building.

[0025] In the process of driving the second fan blade 53 to rotate by the second motor 52, the first belt pulley 46, the connecting belt 47 and the second belt pulley 48 are also driven to rotate by the second motor 52. At this time, the second belt pulley 48 drives the connecting shaft 49 to rotate, and the speed of the connecting shaft 49 is reduced and output by the speed reducer 43. At this time, the speed reducer 43 drives the cam 44 to rotate. In the process of rotating, when the protruding end of the cam 44 enters the inside of the limiting plate 45, the connecting plate 42 drives the middle smoke exhaust mechanism 5 to move downward, thereby reducing the height of the middle smoke exhaust mechanism 5. Through the rotation of the cam 44, the middle smoke exhaust mechanism 5 is moved up and down to reciprocate, thereby improving the range of the middle smoke exhaust mechanism 5 for exhausting smoke in the building and improving the overall smoke exhaust range.

[0026] Embodiment two: as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the connecting mechanism 3 comprises a sliding rail 31, a sliding block 32 is slidably connected in the sliding rail 31, a spring 34 is fixedly connected in the sliding rail 31, the spring 34 is fixedly connected with the surface of the sliding block 32, a guide rod 33 is fixedly connected in the sliding rail 31, the sliding block 32 is slidably inserted with the guide rod 33, and the spring 34 is fixedly connected on both sides of the sliding block 32.

[0027] The effect of the whole embodiment is that in the process of moving up and down, the spring 34 in the sliding rail 31 is stretched and deformed, thereby resetting the movement of the middle smoke exhaust mechanism 5. At the same time, the sliding block 32 slides along the sliding rail 31 and the guide rod 33 to limit the up-down reciprocating movement of the connecting plate 42 and the limiting plate 45, thereby improving the stability of the middle smoke exhaust mechanism 5 when moving.

[0028] The use method and working principle of the device are as follows. The whole is installed in the building through the mounting base 11. When a fire occurs, the first fan blade 23 is driven to rotate by the first motor 22 to perform smoke exhaust on the top layer of smoke in the building. The second fan blade 53 is driven to rotate by the second motor 52 to perform smoke exhaust on the middle layer of smoke in the building, thereby improving the overall smoke exhaust performance and fully and quickly exhausting the smoke at different heights in the building.

[0029] In the process of driving the second fan blade 53 to rotate, the second motor 52 also drives the first pulley 46, the connecting belt 47 and the second pulley 48 to rotate, at this time the second pulley 48 drives the connecting shaft 49 to rotate, and then the speed of the connecting shaft 49 is reduced and output by the speed reducer 43, at this time the speed reducer 43 drives the cam 44 to rotate, in the process of rotating, when the protruding end of the cam 44 enters the inside of the limiting plate 45, the connecting plate 42 drives the middle smoke exhaust mechanism 5 to move downward, thereby reducing the height of the middle smoke exhaust mechanism 5, through the rotation of the cam 44, the reciprocating motion of the middle smoke exhaust mechanism 5 is realized, thereby improving the range of the middle smoke exhaust mechanism 5 to exhaust smoke in the building, and improving the overall smoke exhaust range.

[0030] In the process of moving up and down, the spring 34 in the slide rail 31 produces extension and contraction deformation, thereby resetting the movement of the middle smoke exhaust mechanism 5, and the sliding block 32 slides along the slide rail 31 and the guide rod 33 to limit the up-down reciprocating motion of the connecting plate 42 and the limiting plate 45, thereby improving the stability of the middle smoke exhaust mechanism 5 when moving.

[0031] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments without departing from the technical scheme of the present application, according to the technical essence of the present application, still belongs to the protection scope of the present application.

Claims

1. A fire ventilation and smoke exhaust device, comprising an installation mechanism (1), wherein the installation mechanism (1) comprises an installation base (11), wherein a top smoke exhaust mechanism (2) is fixedly connected to the lower part of the installation base (11), wherein the top smoke exhaust mechanism (2) comprises a first housing (21), wherein a first motor (22) is fixedly connected inside the first housing (21), and a first fan blade (23) is fixedly connected to the output end of the first motor (22), characterized in that: The connecting frame (12) is fixedly connected to the side of the mounting base (11), and the connecting mechanism (3) is fixedly connected to the bottom of the connecting frame (12), wherein the connecting mechanism (3) comprises a sliding rail (31), a sliding block (32) is slidably connected to the inside of the sliding rail (31), and a spring (34) is fixedly connected to the inside of the sliding rail (31), wherein the spring (34) is fixedly connected to the surface of the sliding block (32), and a reciprocating mechanism (4) is fixedly connected to the inner side of the connecting mechanism (3), wherein the reciprocating mechanism (4) comprises a fixed frame (41), a connecting plate (42) and a first belt pulley (46), the fixed frame (41) is fixedly connected to the inner side of the connecting frame (12), and a limiting plate (45) is fixedly connected to the lower part of the fixed frame (41), the connecting plate (42) is fixedly connected to the sliding block (32), and a speed reducer (43) is fixedly connected to the upper part of the connecting plate (42), wherein the output end of the speed reducer (43) is fixedly connected with a cam (44), and the input end of the speed reducer (43) is fixedly connected with a connecting shaft (49), wherein the connecting shaft (49) is fixedly connected with a second belt pulley (48) in the middle, and the surface of the second belt pulley (48) is movably connected with a connecting belt (47), and the lower part of the connecting plate (42) is fixedly connected with a middle smoke exhaust mechanism (5), wherein the middle smoke exhaust mechanism (5) comprises a second housing (51), and the second housing (51) is fixedly connected with a second motor (52) inside, wherein the output end of the second motor (52) is fixedly connected with a second fan blade (53), and the output end of the second motor (52) is fixedly connected with the first belt pulley (46), wherein the first belt pulley (46) is movably connected with the connecting belt (47), and the end of the first housing (21) is fixedly connected with a main smoke exhaust pipe (6), and the end of the second motor (52) is fixedly connected with a connecting hose (7), and the connecting hose (7) is fixedly connected with the main smoke exhaust pipe (6).

2. A fire ventilation and smoke extraction device according to claim 1, characterised in that: The sliding rail (31) is fixedly connected with a guide rod (33) inside.

3. A fire ventilation and smoke extraction device according to claim 1, characterised in that: The sliding block (32) is fixedly connected with a spring (34) on both sides.

4. A fire ventilation and smoke extraction device according to claim 1, characterised in that: The connecting plate (42) is fixedly connected with a mounting frame on the upper part, and the connecting shaft (49) is rotatably connected with the mounting frame.

5. A fire ventilation and smoke extraction device according to claim 1, characterised in that: The connecting plate (42) is fixedly connected with two speed reducers (43) on the upper part, and the two speed reducers (43) are symmetrically distributed on both ends of the connecting shaft (49).

6. A fire ventilation and smoke extraction device according to claim 1, characterised in that: The cam (44) is located below the limiting plate (45).

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