Smoke exhaust fan for fire fighting access

Abstract

The utility model relates to a smoke exhaust fan for a fire fighting access, and relates to the field of fire fighting access fans. The device comprises a fan fixedly arranged on one side of a plurality of ventilation pipelines, the fan is communicated with the ventilation pipelines, a connecting pipe is fixedly installed on the air inlet end face of each ventilation pipeline, a supporting seat is fixedly connected to the front portion of the top of each connecting pipe, and a servo motor is fixedly connected to the top of each supporting seat. A servo motor drives a threaded rod to rotate under the cooperation of a bearing seat, so that a threaded sleeve on the surface of the threaded rod moves, a rack is driven to move under the movement of the threaded sleeve, a gear is driven to rotate, and the gear drives an adjusting plate connected to the surface of a rotating rod to rotate under the cooperation of the bearing seat; and when the rack descends, the adjusting plates rotate anticlockwise, so that the suction inlet is enlarged, and finally smoke is extracted through the fan.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire access fan, in particular to a fire access smoke extraction fan. BACKGROUND

[0002] The fire access is the access for fire fighters to rescue and evacuate trapped personnel, such as stairway, corridor and community exit, etc., which is an important prerequisite for quickly fighting fire, rescuing life and property of owners and reducing fire loss, cannot be occupied at will and must be kept unobstructed at all times, and if the fire access is occupied, it will bring major hidden dangers to life and property of the owners.

[0003] The ventilation duct is generally installed at the suspended ceiling of the fire access, and the fixed fence is generally designed at the air suction duct opening of the duct, which plays a dust prevention effect during ventilation, but this fixed design cannot be adjusted when there is smoke, so that the smoke extraction flow rate is slow, thereby affecting the smoke extraction effect. CONTENT OF THE INVENTION

[0004] In order to solve the existing technical problems, the present application provides a fire access smoke extraction fan.

[0005] The fire access smoke extraction fan provided by the present application adopts the following technical scheme: a fire access smoke extraction fan, comprising a fan fixedly arranged on one side of a ventilation duct, wherein the number of ventilation ducts is multiple, the fan and the ventilation duct are communicated, the ventilation duct is fixedly provided with a connecting pipe at the air inlet end face, the top of the connecting pipe is fixedly connected with a support seat, the top of the support seat is fixedly connected with a servo motor, the output shaft of the servo motor penetrates through the support seat and extends to the bottom of the support seat and is fixedly connected with a threaded rod, the top and bottom of the surface of the threaded rod are rotatably connected with the top of the inner cavity of the support seat and the connecting pipe through bearing seats respectively, the surface of the threaded rod is threadedly connected with a threaded sleeve, the back surface of the threaded sleeve is slidably arranged on the front surface of the connecting pipe, the right side of the threaded sleeve is fixedly connected with a rack, the surface of the rack is engaged with a gear, the shaft center of the back surface of the gear is fixedly connected with a rotating rod, the back surface of the rotating rod penetrates through the connecting pipe and extends to the inside of the connecting pipe, the connecting pipe and the rotating rod are rotatably connected through a bearing seat, and the surface of the rotating rod is fixedly connected with an adjusting plate.

[0006] Through the above technical scheme, the threaded rod is driven to rotate under the cooperation of the bearing seat, so that the threaded sleeve on the surface of the threaded rod moves, the rack is driven to move under the movement of the threaded sleeve, the gear is driven to rotate, the adjusting plate connected to the surface of the rotating rod is driven to rotate under the cooperation of the bearing seat, so that the gap between the adjusting plates is adjusted, when the rack descends, the adjusting plate rotates counterclockwise, so that the suction inlet is increased, finally the smoke is extracted by the fan, so that the extraction amount of smoke is increased, the effect of extracting smoke is improved, and the fixed fence mode is replaced.

[0007] Preferably, the connecting pipe is fixedly installed with a filter screen on the end surface close to the ventilation duct, and the filter screen is an activated carbon filter screen.

[0008] Through the above technical scheme, the extracted smoke gas is subjected to odor filtering treatment by setting the filter screen as an activated carbon filter screen.

[0009] Preferably, a guide groove is formed on the front surface of the connecting pipe, a guide block is slidably connected to the inner surface of the guide groove, and the front surface of the guide block is fixedly connected to the back surface of the threaded rod.

[0010] Through the above technical scheme, the surface of the guide block is slidably connected to the inner surface of the guide groove, the movement of the threaded sleeve is guided and limited, so that the threaded sleeve drives the rack to move.

[0011] Preferably, the bottom of the ventilation duct is fixedly connected with a mounting plate, and the top of the mounting plate is provided with a mounting hole.

[0012] Through the above technical scheme, the mounting plate at the bottom of the ventilation duct can be hoisted to form a pipe, which facilitates installation.

[0013] Preferably, the initial position of the adjusting plate is designed to be inclined downward, and there is a gap between the two adjacent adjusting plates.

[0014] Through the above technical scheme, the initial position of the adjusting plate is designed to be inclined downward, and there is a gap between the two adjacent adjusting plates, which avoids the accumulation of dust during normal ventilation.

[0015] Preferably, the lowest point of the rack is the initial point of rotation of the gear, and the gear is driven to rotate when the rack moves downward.

[0016] Through the above technical scheme, the lowest point of the rack is the initial point of rotation of the gear, and the gear is driven to rotate when the rack moves downward, so that the adjusting plate rotates counterclockwise when the rack descends, thereby increasing the suction inlet.

[0017] Preferably, the adjusting plate is located between two adjacent rotating rods.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1、The utility model discloses a screw rod is rotated under the cooperation of bearing seat through servo motor to make the threaded sleeve on the surface of screw rod move, moves the rack under the movement of threaded sleeve and drives the gear to rotate, makes the gear drive the adjusting plate connected on the surface of rotating lever to rotate under the cooperation of bearing seat to adjust the gap between adjusting plate, when the rack drops, make the adjusting plate rotate counterclockwise and increase the suction inlet, finally through the fan and extract the smoke, make the smoke extraction amount increase, improve the effect of extracting smoke, replace the fixed fence mode.

[0020] 2、The utility model discloses a filter screen is activated carbon filter screen, and the extracted smoke gas is filtered and handled.

[0021] 3、The utility model discloses the surface of guiding block is slidably connected on the inner surface of guiding groove, and the movement of threaded sleeve is guided and limited to make threaded sleeve drive the rack to move.

[0022] 4、The utility model discloses the mounting plate of ventilation pipeline bottom can be hoisted by hoisting mode, and the pipeline formed by ventilation pipeline is hoisted, and the convenient installation purpose is played.

[0023] 5、The utility model discloses the initial position of adjusting plate is designed as inclined downward, and there is a gap between two adjacent adjusting plates, which avoids the dust accumulation when normal ventilation.

[0024] 6、The utility model discloses the lowest point of rack is the initial point of gear rotation, and the gear rotates when the rack moves downward, and the adjusting plate rotates counterclockwise when the rack drops, thereby increasing the suction inlet. DRAWINGS

[0025] The drawings that form a part of the present application are used to provide further understanding of the present application, so that other features, objects and advantages of the present application become more obvious. The illustrative embodiment drawings of the present application and their description are used to explain the present application, and do not constitute undue limitation on the present application. In the drawings:

[0026] Figure 1 is a structural schematic view of the utility model.

[0027] Figure 2 is a cooperation schematic view between servo motor and screw rod of the utility model.

[0028] Figure 3 is a filter screen structure schematic view of the utility model.

[0029] Figure 4 The utility model discloses Figure 3 It is the enlarged schematic view of structure in A place in the utility model.

[0030] Mark explanation: 1, ventilation duct; 2, fan; 3, connecting pipe; 4, support seat; 5, servo motor; 6, threaded rod; 7, threaded sleeve; 8, rack; 9, gear; 10, rotating rod; 11, adjusting plate; 12, filter screen; 13, guide slot; 14, guide block. DETAILED DESCRIPTION

[0031] In order to make the person skilled in the art better understand the present application scheme, the technical scheme in the present application embodiment will be described clearly and completely below in conjunction with the drawings in the present application embodiment. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should be within the scope of protection of the present application.

[0032] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0033] In the present application, the terms "up", "down", "left", "right", "front", "back", "top", "bottom", "in", "out", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0034] And, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the term can also be used to represent other meanings, for example, the term "up" can also be used to represent a certain dependent relationship or connection relationship in some cases. For the person skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific situation.

[0035] In addition, the term "plurality" shall mean two and more than two.

[0036] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] Embodiment one:

[0038] In combination with Figure 1 , Figure 2 and Figure 4The embodiment of the application discloses a smoke extraction fan for fire-fighting passage, which comprises a fan 2 fixedly arranged on one side of a ventilation pipeline 1, wherein the number of the ventilation pipeline 1 is multiple, the fan 2 is communicated with the ventilation pipeline 1, a connecting pipe 3 is fixedly installed on the air inlet end surface of the ventilation pipeline 1, a supporting seat 4 is fixedly connected to the top of the front part of the connecting pipe 3, a servo motor 5 is fixedly connected to the top of the supporting seat 4, a threaded rod 6 is fixedly connected to the bottom of the supporting seat 4 and extends from the output shaft of the servo motor 5, the top and bottom surfaces of the threaded rod 6 are rotatably connected with the top of the inner cavity of the supporting seat 4 and the connecting pipe 3 through bearing seats respectively, a threaded sleeve 7 is threadedly connected to the surface of the threaded rod 6, a guide groove 13 is formed in the front surface of the connecting pipe 3, a guide block 14 is slidably connected to the inner surface of the guide groove 13, and the front surface of the guide block 14 is fixedly connected with the back surface of the threaded sleeve 7, the surface of the guide block 14 is slidably connected with the inner surface of the guide groove 13, the movement of the threaded sleeve 7 is guided and limited, so that the threaded sleeve 7 drives the rack 8 to move, the back surface of the threaded sleeve 7 is slidably arranged with the front surface of the connecting pipe 3, the right side of the threaded sleeve 7 is fixedly connected with the rack 8, the lowest point of the rack 8 is the initial point of rotation of the gear 9, the rack 8 drives the gear 9 to rotate when moving downward, the lowest point of the rack 8 is the initial point of rotation of the gear 9, the gear 9 is driven to rotate when the rack 8 moves downward, the adjusting plate 11 is counterclockwise rotated when the rack 8 descends, so that the suction inlet is increased, the surface of the rack 8 is engaged with the gear 9, the back surface of the gear 9 is fixedly connected with the rotating rod 10, the back surface of the rotating rod 10 penetrates through the connecting pipe 3 and extends to the inside of the connecting pipe 3, the connecting pipe 3 and the rotating rod 10 are rotatably connected through a bearing seat, the surface of the rotating rod 10 is fixedly connected with the adjusting plate 11, the initial position of the adjusting plate 11 is designed to be inclined downward, there is a gap between the two adjacent adjusting plates 11, and the adjusting plate 11 is located between the two adjacent rotating rods 10, the initial position of the adjusting plate 11 is designed to be inclined downward, and there is a gap between the two adjacent adjusting plates 11, so that the dust accumulation condition is avoided when normal ventilation, the threaded rod 6 is driven to rotate under the cooperation of the bearing seat and the servo motor 5, so that the threaded sleeve 7 on the surface of the threaded rod 6 moves, the rack 8 is driven to move under the movement of the threaded sleeve 7, so that the gear 9 is driven to rotate, the adjusting plate 11 connected to the surface of the rotating rod 10 is driven to rotate under the cooperation of the bearing seat and the gear 9, so that the gap between the adjusting plates 11 is adjusted, the adjusting plate 11 is counterclockwise rotated when the rack 8 descends, so that the suction inlet is increased, finally the smoke is extracted through the fan 2, the smoke extraction amount is increased, the smoke extraction effect is improved, and the fixed fence mode is replaced.

[0039] Embodiment two

[0040] Combined Figures 1-3The utility model provides a kind of smoke fan for fire-fighting passage, including fan 2 being fixedly arranged in the side of ventilation duct 1, the bottom of ventilation duct 1 is fixedly connected with mounting plate, and the top of mounting plate is equipped with mounting hole, by setting the mounting plate of ventilation duct 1 bottom, the pipe formed by hoisting ventilation duct 1 can be hoisted, to facilitate the purpose of installation, the number of ventilation duct 1 is multiple, fan 2 and ventilation duct 1 are communicated, the air inlet end surface of ventilation duct 1 is fixedly installed with connecting pipe 3, the end surface close to ventilation duct 1 of connecting pipe 3 is fixedly installed with filter screen 12, filter screen 12 is activated carbon filter screen, by setting filter screen 12 as activated carbon filter screen, the smell filtering treatment is carried out to the smoke gas extracted, the front of the top of connecting pipe 3 is fixedly connected with support seat 4, the top of support seat 4 is fixedly connected with servo motor 5, the output shaft of servo motor 5 penetrates support seat 4 and extends to the bottom of support seat 4 and is fixedly connected with threaded rod 6, the top and bottom of the surface of threaded rod 6 are rotatably connected between the top of support seat 4 inner chamber and connecting pipe 3 respectively by bearing seat, the surface of threaded rod 6 is threadedly connected with threaded sleeve 7, the back of threaded sleeve 7 and the front of connecting pipe 3 are slidably arranged, the right side of threaded sleeve 7 is fixedly connected with rack 8, the surface of rack 8 is engaged with gear 9, the shaft center of the back of gear 9 is fixedly connected with rotating rod 10, the back of rotating rod 10 penetrates connecting pipe 3 and extends to the inside of connecting pipe 3, connecting pipe 3 and rotating rod 10 are rotatably connected by bearing seat, the surface of rotating rod 10 is fixedly connected with adjusting plate 11.

[0041] Working principle: when the utility model is used, start fan 2 to generate wind speed, ventilation operation is carried out to ventilation duct 1, when there is smoke, start servo motor 5, drive threaded rod 6 to rotate under the cooperation of bearing seat by servo motor 5, so that threaded sleeve 7 on the surface of threaded rod 6 moves, threaded sleeve 7 moves in the direction of guide block 14 on the inner surface of guide groove 13 and is guided, drive rack 8 to move under the movement of threaded sleeve 7, the engagement between rack 8 and gear 9 drives gear 9 to rotate, so that gear 9 drives adjusting plate 11 connected to the surface of rotating rod 10 to rotate under the cooperation of bearing seat, thereby adjusting the gap between adjusting plate 11, when rack 8 descends, adjusting plate 11 rotates counterclockwise, thereby increasing suction inlet, finally, smoke is extracted by fan 2, so that the extraction amount of smoke increases, and the effect of extracting smoke is improved, and smoke is filtered by filter screen 12.

[0042] Summarized above: the smoke fan for fire-fighting passage is provided with fan 2, connecting pipe 3, servo motor 5, threaded rod 6, threaded sleeve 7, rack 8, gear 9, rotating rod 10 and adjusting plate 11, the area of suction inlet is increased, so that the extraction amount of smoke increases, and the effect of extracting smoke is improved.

[0043] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A smoke exhaust fan for fire fighting passage, comprising a fan (2) fixedly arranged at one side of a ventilation duct (1), the number of the ventilation ducts (1) is multiple, and the fan (2) is communicated with the ventilation duct (1), characterized in that: The air inlet end face of the ventilation duct (1) is fixedly provided with a connecting pipe (3), the top of the connecting pipe (3) is fixedly connected with a supporting seat (4), the top of the supporting seat (4) is fixedly connected with a servo motor (5), the output shaft of the servo motor (5) penetrates through the supporting seat (4) and extends to the bottom of the supporting seat (4) and is fixedly connected with a threaded rod (6), the top and bottom of the surface of the threaded rod (6) are rotatably connected with the top of the inner cavity of the supporting seat (4) and the connecting pipe (3) through bearing seats respectively, the surface of the threaded rod (6) is threadedly connected with a threaded sleeve (7), the back surface of the threaded sleeve (7) is slidably arranged on the front surface of the connecting pipe (3), the right side of the threaded sleeve (7) is fixedly connected with a rack (8), the surface of the rack (8) is engaged with a gear (9), the back surface of the gear (9) is fixedly connected with a rotating rod (10), the back surface of the rotating rod (10) penetrates through the connecting pipe (3) and extends to the inside of the connecting pipe (3), the connecting pipe (3) and the rotating rod (10) are rotatably connected through a bearing seat, and the surface of the rotating rod (10) is fixedly connected with an adjusting plate (11).

2. A smoke exhaust fan for a fire escape passage according to claim 1, characterized in that: The end face of the connecting pipe (3) close to the ventilation duct (1) is fixedly provided with a filter screen (12), and the filter screen (12) is an activated carbon filter screen.

3. The smoke exhaust fan for fire exit according to claim 1, characterized in that: The front surface of the connecting pipe (3) is provided with a guide groove (13), and the inner surface of the guide groove (13) is slidably connected with a guide block (14), and the front surface of the guide block (14) is fixedly connected with the back surface of the threaded rod (6).

4. The smoke exhaust fan for fire fighting passage according to claim 1, characterized in that: The bottom of the ventilation duct (1) is fixedly connected with a mounting plate, and the top of the mounting plate is provided with a mounting hole.

5. The smoke exhaust fan for fire exit according to claim 1, characterized in that: The initial position of the adjusting plate (11) is designed to be inclined downward, and there is a gap between two adjacent adjusting plates (11).

6. The smoke exhaust fan for fire exit passage according to claim 1, characterized in that: The lowest point of the rack (8) is the initial point of rotation of the gear (9), and the rack (8) drives the gear (9) to rotate when moving downward.

7. A smoke exhaust fan for a fire escape passage according to claim 5, characterized in that: The adjusting plate (11) is located between two adjacent rotating rods (10).

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