Hand-push type fire-fighting electric smoke exhaust device

Abstract

The utility model provides a hand-push type fire-fighting electric smoke exhaust device, relates to the technical field of fire-fighting electric smoke exhaust, and aims to improve the smoke exhaust efficiency and the operation flexibility and solve the problems of non-adjustable fan angle, low smoke exhaust efficiency, lack of buffering of water pressure impact and the like of the existing fire-fighting smoke exhaust equipment. The device comprises a hand push frame body, a pump connecting cavity component, a fan body and a fan angle adjusting and supporting mechanism. A fan angle adjusting mechanism is arranged, so that the fan angle can be flexibly adjusted according to the requirements of a fire extinguishing site, and the smoke exhaust effect is optimized; a buffer liquid level cavity is arranged in the pump connecting cavity part, so that the water pressure change can be effectively buffered, the influence of water pressure impact on an injection system is prevented, and the stability and the safety of equipment are enhanced; the fire extinguishing and rescuing device is optimized in structure, high in adaptability and capable of providing efficient and safe smoke exhausting and water spraying functions in various fire extinguishing and rescuing scenes, the rescuing efficiency is improved, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric smoke exhaust for fire fighting, in particular to a hand-push electric smoke exhaust device for fire fighting. Background Art

[0002] Fire electric smoke exhaust fans play a vital role in fire accidents. Their main task is to ensure the safe evacuation of personnel and reduce the harm of smoke to human health by effectively discharging thick smoke and toxic gases.

[0003] Prior art CN201815027U discloses a portable, hand-pushed electric smoke exhauster for firefighting. The device comprises a steel frame with a fan mounted on it, a power source at the bottom, and a rotating and climbing wheel mount at the front, with steering and braking functions. The device can be both portable and hand-pushed, enabling rapid smoke exhaust and effectively saving firefighters' energy. This improves mobility and ease of operation, particularly in firefighting and rescue scenarios, and is widely used in tunnels, mines, and other environments.

[0004] However, such prior art electric smoke exhaust machines for fire fighting have some obvious deficiencies and defects, which are mainly manifested in the following aspects:

[0005] 1. Non-adjustable fan angle: Existing hand-propelled electric smoke exhaust fans have a fixed fan structure, making it impossible to adjust the fan angle according to actual needs. As a result, smoke exhaust effectiveness can be significantly reduced in different firefighting scenarios, especially if the fire source is located high or low, making it difficult to flexibly respond to various complex rescue situations.

[0006] 2. Limited smoke exhaust efficiency: While existing technologies have improved smoke exhaust speeds by designing the connection between the power source and the duct, smoke exhaust efficiency remains insufficient when dealing with large-scale fires or dense smoke in enclosed spaces. In particular, in scenarios requiring prolonged, large-scale smoke exhaust, existing equipment may not be able to continuously and effectively exhaust smoke, hindering rescue effectiveness.

[0007] 3. Lack of a buffering and regulating mechanism, and water pressure shock issues: Existing devices do not have an effective water pressure buffering mechanism to cope with water pressure changes during water spraying operations, and are unable to effectively buffer and regulate water flow pressure. Sudden changes in water pressure may cause shocks to the equipment's spraying mechanism. There is a lack of an effective water pressure buffering device to stabilize the water flow and prevent unstable spraying due to water pressure fluctuations, which affects the efficiency and safety of fire extinguishing. Especially in high water pressure environments, the internal connecting components and spraying components of the equipment are subjected to greater pressure shocks, increasing the risk of equipment damage and affecting its service life and safety. Utility Model Content

[0008] The problem addressed by this utility model is to improve the smoke exhaust efficiency and operational flexibility of existing electric fire smoke exhaust devices. Existing electric fire smoke exhaust devices suffer from issues such as non-adjustable fan angles, limited smoke exhaust efficiency, a lack of water pressure shock buffering, and poor adaptability, all of which affect firefighting and rescue effectiveness and the reliability of the equipment. This utility model, through a fan angle adjustment support mechanism and a water pressure buffering mechanism, provides a more efficient, flexible, and safer electric fire smoke exhaust device.

[0009] In order to solve the above problems, the present invention provides a hand-push fire-fighting electric smoke exhaust device, including a hand-push frame body, the hand-push frame body is movably hinged with a pump connection cavity component, the pump connection cavity component is connected to a fan body on the upper shaft, the inner end of the hand-push frame body is provided with a fan angle adjustment support mechanism, the fan angle adjustment support mechanism extends forward to adjust and support the fan body, the pump connection cavity component includes three parts, including a docking cavity connected to the pump body, the side end of the docking cavity is fixedly provided with a connected buffer level cavity, and the end of the buffer level cavity away from the docking cavity is fixedly provided with a connected injection cavity. By providing a buffer level cavity in the pump connection cavity component, the problem of unstable injection caused by water pressure changes in existing equipment is effectively solved. The buffer level cavity can buffer and adjust the incoming water, prevent the sudden change of water pressure from impacting the equipment injection system, enhance the stability and injection efficiency of the device, and improve the safety and reliability of the fire extinguishing operation.

[0010] Preferably, the fan angle adjustment support mechanism includes a rotating handwheel, one end of which is connected to an adjusting screw, a lock nut seat is fixedly provided at the inner end of the push frame body, the adjusting screw is threadedly connected to the lock nut seat body and extends forward, and a supporting top block is provided at the front end of the adjusting screw, the supporting top block contacts the fan body and presses against the fan body. By setting the fan angle adjustment support mechanism, the angle of the fan body can be adjusted according to actual needs. Through the cooperation of the rotating handwheel and the adjusting screw, the angle of the fan can be flexibly adjusted to the optimal position to adapt to fire sources of different heights and directions, greatly improving the smoke exhaust effect and the applicability of the equipment, especially in complex and changeable fire extinguishing scenarios, which can significantly enhance the effectiveness of rescue.

[0011] Preferably, the docking cavity is a columnar structure that is larger at the top and smaller at the bottom. The docking cavity includes an interface flange. One end of the interface flange is connected to a liquid inlet cavity. A hydraulic flowmeter is provided at the upper end of the liquid inlet cavity.

[0012] Preferably, the buffer level cavity is a tapered barrel structure that is larger at the top and smaller at the bottom. The buffer level cavity includes a connecting cavity, and one end of the connecting cavity is connected to the buffer cavity.

[0013] Preferably, the injection cavity is a steering wheel-shaped structure, and the injection cavity includes an injection liquid cavity, and the outer edge of the injection liquid cavity is evenly distributed with a plurality of hollow rods connected thereto, and the side end is provided with an injection atomization hole.

[0014] Preferably, the caliber of the docking cavity is larger than that of the injection cavity, which in turn is smaller than that of the buffer level cavity. By optimizing the overall structure of the device and extending its service life, and by optimizing the structural design of multiple functional cavities, such as the docking cavity, buffer level cavity, and injection cavity, the present invention effectively reduces stress concentration and wear during use, thereby extending the device's service life. Furthermore, the optimized structural design reduces maintenance frequency and repair costs, thereby improving the device's economic efficiency and sustainability.

[0015] Preferably, a climbing component is provided at the lower end of the trolley frame, and the climbing component includes a rotating wheel seat provided at the front end, a rotating wheel movably hinged in the rotating wheel seat, and a climbing wheel movably hinged in the climbing wheel seat. The climbing component also includes a climbing wheel seat provided at the rear end, and a climbing wheel movably hinged in the climbing wheel seat. The present invention provides a climbing component at the lower end of the trolley frame, including a rotating wheel seat at the front end and a climbing wheel seat at the rear end, which can not only realize the movement of the equipment on flat ground, but also meet the operational requirements in complex terrain and stair environments. This multifunctional mobile component design significantly improves the flexibility and stability of the equipment during fire fighting and rescue, solves the problem of difficulty in moving equipment in complex terrain in the prior art, and further improves the practicality of the equipment.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] 1. The fan angle is adjustable and highly adaptable:

[0018] This new model incorporates a fan angle adjustment support mechanism within the push stand frame, enabling both adjustment and support of the fan angle. This allows the fan to be adjusted to the specific firefighting scenario, achieving optimal smoke exhaust performance regardless of whether the fire source is high or low. Compared to existing fixed fan duct structures, this new model significantly enhances the device's adaptability and smoke exhaust performance in complex firefighting and rescue situations.

[0019] 2. Efficient buffer mechanism to improve smoke exhaust stability:

[0020] The pump connection chamber component of this utility model comprises a three-part structural design: a docking chamber, a buffer level chamber, and a spray chamber. The buffer level chamber effectively buffers incoming water flow, preventing excessive water pressure from impacting the spray system. This structural design addresses the lack of an effective water pressure buffer mechanism in existing water spraying equipment, significantly improving its operational stability and safety. It protects the internal connection components and spraying components from damage caused by water pressure shock, particularly in high-pressure environments, thereby extending the equipment's service life.

[0021] 3. Smoke exhaust efficiency is significantly improved:

[0022] The structural design of this utility model takes into account the comprehensive optimization of fan angle adjustment and smoke exhaust effect. By adjusting the fan angle, the optimal smoke exhaust path and coverage are achieved, effectively improving smoke exhaust efficiency. In addition, the pump connection cavity components include a docking cavity, a buffer level cavity, and a spray cavity. This segmented design ensures more precise water flow stability and flow control during the smoke exhaust and water spraying process, effectively preventing problems such as smoke backflow and incomplete smoke exhaust. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the utility model's hand-push fire-fighting electric smoke exhaust device.

[0024] Figure 2 This is a schematic diagram of the structure of the hand-push fire-fighting electric smoke exhaust device after adjusting the angle of the device.

[0025] Figure 3 It is a side view of the hand-push electric fire-fighting smoke exhaust device of the present utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the pump connecting the cavity components.

[0027] Figure 5 for Figure 4 Cross-section of section AA.

[0028] Figure 6 This is a structural diagram of the pump connecting cavity components from another perspective.

[0029] In the figure: 1-hand push frame, 2-pump connecting cavity component, 201-docking cavity, 202-buffer level cavity, 203-injection cavity, 204-interface flange, 205-liquid inlet cavity, 206-hydraulic flowmeter, 207-connecting cavity, 208-buffer cavity, 209-injection liquid outlet cavity, 210-hollow rod body, 211-injection atomization hole, 3-fan body, 4-fan angle adjustment support mechanism, 401-rotating handwheel, 402-adjusting screw, 403-lock nut seat, 404-support top block, 5-climbing component, 501-rotating wheel seat, 502-rotating wheel, 503-climbing wheel seat, 504-climbing wheel. DETAILED DESCRIPTION

[0030] The present invention will be further explained below with reference to the accompanying drawings and embodiments.

[0031] Reference Figures 1-6 As shown, the utility model provides a hand-push fire-fighting electric smoke exhaust device, including a hand-push frame body 1, the hand-push frame body 1 is movably hinged with a pump connecting cavity part 2, the pump connecting cavity part 2 is connected to a fan body 3 on the upper axis, and the inner end of the hand-push frame body 1 is provided with a fan angle adjustment support mechanism 4, the fan angle adjustment support mechanism 4 extends forward to adjust and support the fan body 3, the pump connecting cavity part 2 includes three parts, including a docking cavity 201 connected to the pump body, the side end of the docking cavity 201 is fixedly provided with a connected buffer level cavity 202, and the buffer level cavity 202 is fixedly provided with a connected injection cavity 203 at one end away from the docking cavity 201. By arranging the buffer level cavity 202 in the pump connecting cavity part 2, the problem of unstable injection caused by water pressure changes in the existing equipment is effectively solved. The buffer level cavity 202 can buffer and regulate the incoming water, preventing the sudden change of water pressure from impacting the equipment injection system, thereby enhancing the stability and injection efficiency of the device and improving the safety and reliability of the fire extinguishing operation.

[0032] Reference Figure 2 、 Figure 3As shown, the fan angle adjustment support mechanism 4 includes a rotating hand wheel 401, one end of which is connected to an adjusting screw 402, the inner end of the push frame body 1 is fixedly provided with a lock nut seat body 403, the adjusting screw 402 is threadedly connected to the lock nut seat body 403 and extends forward, and the front end of the adjusting screw 402 is provided with a supporting top block 404, the supporting top block 404 contacts the fan body 3 and presses against the fan body 3. By setting the fan angle adjustment support mechanism 4, the angle of the fan body 3 can be adjusted according to actual needs. By rotating the hand wheel 401 and adjusting the screw 402, the angle of the fan can be flexibly adjusted to the optimal position to adapt to fire sources of different heights and directions, greatly improving the smoke exhaust effect and the applicability of the equipment, especially in complex and changeable fire extinguishing scenes, which can significantly enhance the effectiveness of rescue.

[0033] Reference Figure 4-Figure 6 As shown, the docking cavity 201 is a columnar structure with a larger upper portion and a smaller lower portion. The docking cavity 201 includes an interface flange 204 . One end of the interface flange 204 is connected to a liquid inlet cavity 205 . A hydraulic flowmeter 206 is provided at the upper end of the liquid inlet cavity 205 .

[0034] The buffer level cavity 202 is a tapered barrel structure that is larger at the top and smaller at the bottom. The buffer level cavity 202 includes a connecting cavity 207 , and one end of the connecting cavity 207 is connected to a buffer cavity 208 .

[0035] The injection cavity 203 is a steering wheel-shaped structure. The injection cavity 203 includes an injection liquid cavity 209. The outer edge of the injection liquid cavity 209 is evenly distributed with multiple hollow rods 210 connected thereto, and the side end is opened with an injection atomization hole 211.

[0036] The caliber of the docking cavity 201 is larger than that of the injection cavity 203, which is in turn smaller than that of the buffer level cavity 202. By optimizing the overall structure of the device and extending its service life, the present invention effectively reduces stress concentration and wear during use, extending its service life by optimizing the structural design of multiple functional cavities, including the docking cavity 201, the buffer level cavity 202, and the injection cavity 203. Furthermore, the optimized structural design reduces maintenance frequency and repair costs, improving the device's economical and sustainable nature.

[0037] Reference Figure 1-Figure 3As shown, the lower end of the trolley frame 1 is provided with a climbing component 5, and the climbing component 5 includes a rotating wheel seat 501 provided at the front end, and a rotating wheel 502 is movably hinged in the rotating wheel seat 501. The climbing component 5 also includes a climbing wheel seat 503 provided at the rear end, and a climbing wheel 504 is movably hinged in the climbing wheel seat 503. The present invention is provided with a climbing component at the lower end of the trolley frame, including a rotating wheel seat at the front end and a climbing wheel seat at the rear end. The design can not only realize the movement of the equipment on flat ground, but also meet the operational requirements in complex terrain and stair environments. This multifunctional mobile component design significantly improves the flexibility and stability of the equipment during fire fighting and rescue, solves the problem of difficulty in moving equipment in complex terrain in the prior art, and further improves the practicality of the equipment.

[0038] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0039] The specific working process is:

[0040] 1. Equipment Preparation and Movement: Before firefighting and rescue operations begin, firefighters first push the device to the fire scene. The stair climbing component 5 at the bottom of the trolley frame 1, with its front rotating wheel 501 and rear climbing wheel 503, enables smooth movement. This allows the device to easily navigate stairs and uneven terrain, enhancing its mobility and flexibility.

[0041] 2. Fan Angle Adjustment: After reaching the target location, firefighters adjust the angle of the fan body 3 using the fan angle adjustment support mechanism 4 based on the specific location and height of the fire source. Rotating the handwheel 401 drives the adjustment screw 402, which is threadedly connected to the nut body 403 and moves back and forth as it rotates, driving the support block 404 to adjust the fan angle accordingly. Operators can adjust the fan to the optimal exhaust angle based on the actual firefighting scenario to enhance the exhaust effect.

[0042] 3. Activate the smoke exhaust and water spray functions: Firefighters activate the equipment's power source, running fan unit 3 and beginning smoke exhaust. Simultaneously, the pump connects to docking chamber 201 in chamber component 2, connected to the water source, and water flows into buffer chamber 202. This chamber, designed as a tapered barrel with a larger top and smaller bottom, effectively buffers and stabilizes the water flow, reducing the impact of sudden changes in water pressure on spray chamber 203.

[0043] 4. Smoke Exhaust and Water Spraying Process: After the water flows through the buffer level chamber 202, a steady stream of water enters the spray chamber 203. The spray chamber 203 has a steering wheel-like structure, with the water jetting from its liquid outlet chamber 209. Multiple hollow rods 210 are evenly distributed around the outer edge of the liquid outlet chamber 209, interconnected with it. The side ends of the hollow rods are provided with spray atomization holes 211, which uniformly spray water mist for fire extinguishing and cooling purposes. Under high water pressure, the buffer level chamber 202 buffers and regulates the water pressure, ensuring the stability of the spray process and preventing spray instability caused by water pressure fluctuations, thereby improving the safety and effectiveness of firefighting operations.

[0044] 5. End and Evacuation: After the smoke exhaust and water spraying tasks are completed, firefighters can use the trolley frame 1 and the climbing component 5 to move the equipment back to a safe area. The various components of the device can be quickly reset and stored for the next use.

[0045] Through the above process, the utility model can provide efficient and safe smoke exhaust and water spray support in complex and changeable fire extinguishing scenarios, significantly improving the overall effect of fire fighting and rescue and the practicality of the equipment.

[0046] In the description of the present invention, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0047] It should be noted that, in the present invention, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0048] The foregoing description is intended only to provide specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but rather to conform to the broadest scope consistent with the principles and novel features of the present invention described herein.

Claims

1. A hand-push type fire-fighting electric smoke exhaust device, comprising a hand-push frame (1), wherein the hand-push frame (1) is movably hinged with a pump connection cavity component (2), and the upper shaft of the pump connection cavity component (2) is connected to a fan body (3), characterized in that: The inner end of the hand push frame (1) is provided with a fan angle adjustment support mechanism (4), and the fan angle adjustment support mechanism (4) extends forward to adjust and support the fan body (3). The pump connection cavity component (2) includes three parts, including a docking cavity (201) connected to the pump body, a connected buffer level cavity (202) is fixedly provided at the side end of the docking cavity (201), and a connected injection cavity (203) is fixedly provided at one end of the buffer level cavity (202) away from the docking cavity (201).

2. The hand-pushed electric smoke exhaust device for fire fighting according to claim 1, characterized in that: The fan angle adjustment support mechanism (4) comprises a rotating hand wheel (401), one end of the rotating hand wheel (401) is connected to an adjusting screw (402), the inner end of the push frame body (1) is fixedly provided with a lock nut seat body (403), the adjusting screw (402) is threadedly connected to the lock nut seat body (403) and extends forward, and the front end of the adjusting screw (402) is provided with a supporting top block (404), and the supporting top block (404) contacts and presses against the fan body (3).

3. The hand-pushed electric fire smoke exhaust device according to claim 1, characterized in that: The docking cavity (201) is a columnar structure that is larger at the top and smaller at the bottom. The docking cavity (201) comprises an interface flange (204). One end of the interface flange (204) is connected to a liquid inlet cavity (205). A hydraulic flow meter (206) is provided at the upper end of the liquid inlet cavity (205).

4. The hand-pushed electric smoke exhaust device for fire fighting according to claim 3 is characterized in that: The buffer level cavity (202) is in a tapered barrel-shaped structure that is larger at the top and smaller at the bottom. The buffer level cavity (202) comprises a connecting cavity (207), and one end of the connecting cavity (207) is connected to a buffer cavity (208).

5. The hand-pushed electric smoke exhaust device for fire fighting according to claim 4, characterized in that: The injection cavity (203) is in the shape of a steering wheel. The injection cavity (203) includes an injection liquid cavity (209). The outer edge of the injection liquid cavity (209) is evenly distributed with a plurality of hollow rods (210) connected thereto, and the side end is provided with an injection atomization hole (211).

6. The hand-pushed electric fire smoke exhaust device according to claim 1 or 5, characterized in that: The caliber of the docking cavity (201) is larger than the caliber of the injection cavity (203), and the caliber of the docking cavity (201) is smaller than the caliber of the buffer level cavity (202).

7. The hand-pushed electric smoke exhaust device for fire fighting according to claim 1, characterized in that: A stair climbing component (5) is provided at the lower end of the hand-push frame body (1), the stair climbing component (5) comprising a rotating wheel seat (501) provided at the front end, a rotating wheel (502) being movably hinged in the rotating wheel seat (501), and the stair climbing component (5) further comprising a stair climbing wheel seat (503) provided at the rear end, a stair climbing wheel (504) being movably hinged in the stair climbing wheel seat (503).

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