Smoke exhaust pipeline for fire fighting

Abstract

The invention relates to the technical field of fire fighting, in particular to a smoke exhaust pipeline for fire fighting, and solves the problems that in the prior art, the dust treatment function is not fully considered in the design of a smoke exhaust pipeline, so that smoke dust is gradually gathered and adhered on the inner wall of the pipeline, as time goes on, the adhered smoke dust can form a thick deposition layer, and the smoke exhaust pipeline is difficult to clean. The normal smoke exhaust effect of the smoke exhaust pipeline is influenced; and the air outlet amount of the pipeline is reduced. A smoke exhaust pipeline for fire fighting comprises a fan, an inlet of the fan communicates with an air outlet pipe, one side of the air outlet pipe is provided with a first connecting pipe, one end of the first connecting pipe communicates with one end of the air outlet pipe through a thin-opening pipe, one end of the first connecting pipe communicates with a pressurizing frame, and the inner side of the pressurizing frame is provided with a concave plate; the side, away from the first connecting pipe, of the pressurizing frame communicates with a second connecting pipe. The pipeline blockage caused by high smoke dust concentration is avoided, the smoothness of the pipeline is improved, and the air outlet amount of the pipeline is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of fire fighting, and in particular to a smoke exhaust pipe for fire fighting. Background Art

[0002] As a key link in the building fire protection system, the fire smoke exhaust pipe occupies a pivotal position in fire emergency response. This pipe system is mainly responsible for quickly removing smoke and toxic gases inside the building when a fire occurs, providing a valuable time window for personnel evacuation and fire rescue, and is an important facility for ensuring life safety. However, with the complexity of modern building structures and the diversification of fire risks, the performance requirements for fire smoke exhaust pipes are also increasing, especially the ability to handle smoke in the pipe has become the focus of attention.

[0003] In the application field of fire smoke exhaust pipes, the existing smoke exhaust pipe structure is relatively simple, and it mainly relies on fans to perform basic smoke exhaust operations through pipes. However, when a fire occurs, a large amount of smoke and dust will be generated, and these smoke and dust contain a large number of dust particles. The design of traditional smoke exhaust pipes does not fully consider the dust processing function, resulting in the gradual accumulation and adhesion of smoke and dust on the inner wall of the pipe. Over time, these adhered smoke and dust will form a thick deposition layer, which will not only affect the normal smoke exhaust effect of the smoke exhaust pipe, but also greatly reduce the air output and air output rate of the pipe.

[0004] Specifically, the smoke exhaust ducts in the existing technology face prominent problems such as inconvenient operation, low efficiency and unstable quality during the smoke exhaust process. These problems directly lead to the extension of fire emergency response time, increase the difficulty of rescue, and fail to meet the needs of modern buildings for efficient and reliable smoke exhaust systems. More seriously, pipe blockage may also cause secondary disasters, such as overheating of the pipes due to smoke accumulation and even the spread of fire, which poses potential risks to the overall safety of the building and the safety of people's lives. Therefore, in view of the many shortcomings in the existing technology, we need an innovative fire-fighting smoke exhaust duct to solve these problems. Summary of the invention

[0005] The purpose of the present invention is to provide a smoke exhaust duct for fire fighting, which solves the problem that the smoke exhaust duct in the prior art does not fully consider the dust processing function in its design, resulting in the smoke and dust gradually gathering and adhering to the inner wall of the duct. As time goes by, these adhered smoke and dust will form a thick deposition layer, which will affect the normal smoke exhaust effect of the smoke exhaust duct and reduce the air output of the duct.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A smoke exhaust pipe for fire fighting, comprising a fan, an inlet of the fan is connected to an air outlet pipe, a first connecting pipe is provided on one side of the air outlet pipe, and one end of the first connecting pipe is connected to one end of the air outlet pipe through a narrow-mouthed pipe, one end of the first connecting pipe is connected to a booster frame, a concave plate is provided on the inner side of the booster frame, and a second connecting pipe is connected to a side of the booster frame away from the first connecting pipe, and one end of the second connecting pipe is connected to an air inlet pipe;

[0008] The inner side of the first connecting tube is rotatably connected to a rotating tube, and a plurality of inclined grooves are provided on the rotating tube, and a plurality of connecting tubes are connected to the outer side of the first connecting tube near one end of the rotating tube, and all the connecting tubes are distributed in a circular array along the first connecting tube, one side of all the connecting tubes is connected to a side tube, and a conical cylinder is provided on the inner side of all the side tubes, one side of the inner side of all the connecting tubes is rotatably connected to a connecting rod, and the extended end of the connecting rod is located on the inner side of the side tube, one side of all the connecting tubes is fixedly connected to the second motor by bolts, and one end of one of all the connecting rods is connected by a bearing sleeve. The side wall of the connecting tube is drivingly connected to the output shaft of the second motor, and one end of all the connecting rods is fixedly connected to all the conical tubes respectively, and all the connecting rods are meshingly connected to the rotating tubes. The tapered mouths of all the conical tubes are provided with a plurality of ventilation grooves, one end of all the conical tubes is fixedly connected to an annular fitting plate, and the outer wall of the annular fitting plate fits with the inner wall of the side tube, all the side tubes are fixedly connected to a side close to all the conical tubes respectively with a scraper, and one side of the scraper fits with the side of the conical tube away from the tapered mouth, and the outer side of the side tube is connected to a collecting box near the scraper.

[0009] Preferably, a gear sleeve is sleeved on the outer side of the rotating tube, and the inner side of all the connecting tubes is rotatably connected to the first gear through a rotating shaft, and all the first gears are meshingly connected to the gear sleeve, and a second gear is sleeved on one end of all the connecting rods, and all the second gears are respectively meshingly connected to all the first gears.

[0010] Preferably, a plurality of sliders are fixedly connected to the outer walls at both ends of the rotating tube, and all the sliders are slidably connected to the inner wall of the first connecting tube through the annular groove.

[0011] Preferably, the top of the boost frame is fixedly connected to a top plate, and one side of the top plate is fixedly connected to the first motor by bolts, and one side of the top plate is rotatably connected to a rotating rod, and one end of the rotating rod is fixedly connected to a disc, and the other end of the rotating rod passes through the top plate and is transmission-connected to the output shaft of the first motor through a bearing sleeve, a support rod is fixedly connected to the top of the concave plate, and an annular plate is fixedly connected to the top end of the support rod, a protrusion is provided on the inner side of the annular plate, and one end of the protrusion is fixedly connected to the deviated circular portion of the disc, and a one-way valve is installed on both the first connecting pipe and the second connecting pipe.

[0012] Preferably, a limiting rod is fixedly connected to the top of the annular plate, and a sliding sleeve is sleeved on the limiting rod, and one side of the sliding sleeve is fixedly connected to one side of the top plate.

[0013] Preferably, the bottom of the air inlet duct is connected to an air inlet cover, and a number of air inlet slots are provided on the top and both sides of the air inlet duct, movable plates are provided on the inner sides of all the air inlet slots, and one side of all the movable plates is rotatably connected to the inner walls of all the air inlet slots through a torsion spring shaft, and both ends of all the torsion spring shafts are fixedly connected to the air inlet duct through a sealing wax block.

[0014] The present invention has at least the following beneficial effects:

[0015] When a fire-fighting smoke exhaust pipe according to the present invention is used, when a fire occurs, the fan is first started to collect the smoke generated by the fire through the air inlet pipe, and then the smoke is introduced into the booster frame through the second connecting pipe. Then the smoke reaches the first connecting pipe, and at the same time, the second motor is started to drive one of all the connecting rods to rotate, thereby driving the rotating pipe in the first connecting pipe to rotate, and the rotating pipe drives the other connecting rods to rotate. At this time, the smoke passing through the first connecting pipe will pass through all the chute under the centrifugal action of the rotating pipe. At the same time, the dust in the smoke will enter all the connecting pipes again, and the dust will pass through the first connecting pipe. The smoke enters the side pipe through the connecting pipe and is filtered by the conical cylinder. The ventilation slots on the conical cylinder can play a role in ventilation. After filtering, the smoke enters the air outlet pipe and is finally drawn out by the fan. The filtered dust will gather at one end of the conical cylinder. At the same time, the conical cylinder will rotate under the action of the connecting rod, so that the scraper can be used to scrape the outer wall of one end of the conical cylinder to scrape off the accumulated dust, and then the scraped dust is collected in the collecting box connected to the side pipe, thereby avoiding blockage of the pipeline due to high smoke concentration, improving the smoothness of the pipeline and ensuring the air output of the pipeline.

[0016] The present invention also has the following beneficial effects:

[0017] Through the action of the one-way valves on the first connecting pipe and the second connecting pipe, the concave plate slides up and down in the boosting frame to continuously squeeze the gas in the boosting frame, thereby achieving a boosting effect and further increasing the air output of the pipeline. Specifically, the first motor is started to drive the disc to rotate through the rotating rod, thereby driving the protrusion to move in the annular plate, and driving the concave plate to continuously reciprocate up and down through the support rod, thereby continuously pressurizing the pipeline and increasing the flow rate of smoke.

[0018] The air is supplied to the entire pipeline through the air inlet pipe, wherein the air inlet slots on the air inlet pipe are in a closed state when no fire occurs, and air is normally supplied through the air inlet cover. When a fire occurs, the sealing wax blocks at both ends of the torsion spring shaft will melt under the action of high temperature, and the torsion spring shaft will restore its elasticity to prop open all the movable plates in the air inlet slots, so that all the air inlet slots are opened, greatly increasing the air inlet area and the air inlet efficiency, and can be used in conjunction with a booster frame to increase the air volume of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0020] Figure 1 It is the overall main structural diagram of the present invention;

[0021] Figure 2 It is an overall side view of the structure of the present invention;

[0022] Figure 3 This is a structural diagram of the inner side of the first connecting pipe of the present invention;

[0023] Figure 4 The swirl tube of the present invention and its structure diagram;

[0024] Figure 5 This is a structural diagram of the inner side of the side tube of the present invention;

[0025] Figure 6 This is a side pipe connection structure diagram of the present invention;

[0026] Figure 7 It is a rotation structure diagram of the swirling tube of the present invention;

[0027] Figure 8 It is the overall structural diagram of the side tube of the present invention;

[0028] Fig. 9 It is a side view of the conical tube structure of the present invention;

[0029] Fig.10 It is the front view structure diagram of the conical tube of the present invention;

[0030] Fig.11 It is the overall structure diagram of the boost frame of the present invention;

[0031] Fig.12 This is a structural diagram of the inner side of the booster frame of the present invention;

[0032] Fig.13This is the overall structural diagram of the air inlet duct of the present invention.

[0033] In the figure: 1, fan; 2, air outlet pipe; 3, narrow-mouth pipe; 4, first connecting pipe; 5, boost frame; 6, second connecting pipe; 7, air inlet pipe; 8, movable plate; 9, side pipe; 10, connecting pipe; 11, concave plate; 12, top plate; 13, first motor; 14, disc; 15, support rod; 16, bump; 17, annular plate; 18, sliding sleeve; 19, limit rod; 20, rotating tube; 21, slider; 22, annular groove; 23, collecting box; 24, connecting rod; 25, second motor; 26, first gear; 27, conical cylinder; 28, ventilation groove; 29, inclined groove; 30, second gear; 31, scraper; 32, annular fitting plate; 33, one-way valve; 34, torsion spring shaft; 35, wax sealing block; 36, rotating rod; 37, gear sleeve; 38, air inlet groove; 39, air inlet cover. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] Embodiment 1

[0036] Reference Figure 1-13 A smoke exhaust pipe for fire fighting, comprising a fan 1, an inlet of the fan 1 is connected with an air outlet pipe 2, and a first connecting pipe 4 is provided on one side of the air outlet pipe 2, and one end of the first connecting pipe 4 is connected with one end of the air outlet pipe 2 through a narrow-mouthed pipe 3, one end of the first connecting pipe 4 is connected with a booster frame 5, and a concave plate 11 is provided on the inner side of the booster frame 5, and a second connecting pipe 6 is connected on the side of the booster frame 5 away from the first connecting pipe 4, and one end of the second connecting pipe 6 is connected with an air inlet pipe 7;

[0037] The inner side of the first connecting tube 4 is rotatably connected to the rotating tube 20, and a plurality of inclined grooves 29 are provided on the rotating tube 20, and a plurality of connecting tubes 10 are connected to the outer side of the first connecting tube 4 near one end of the rotating tube 20, and all the connecting tubes 10 are distributed in a circular array along the first connecting tube 4, one side of all the connecting tubes 10 are connected to the side tube 9, and the inner side of all the side tubes 9 are provided with a conical cylinder 27, one side of the inner side of all the connecting tubes 10 are rotatably connected to the connecting rod 24, and the extended end of the connecting rod 24 is located on the inner side of the side tube 9, one side of all the connecting tubes 10 is fixedly connected to the second motor 25 by bolts, and one end of all the connecting rods 24 is penetrated by a bearing sleeve The side wall of the connecting tube 10 is drivingly connected to the output shaft of the second motor 25, and one end of all the connecting rods 24 is fixedly connected to all the conical tubes 27 respectively, and all the connecting rods 24 are meshingly connected to the rotating tube 20. The tapered mouth of all the conical tubes 27 is provided with a plurality of ventilation grooves 28. One end of all the conical tubes 27 is fixedly connected to an annular fitting plate 32, and the outer wall of the annular fitting plate 32 fits with the inner wall of the side tube 9. All the side tubes 9 are fixedly connected to a side close to all the conical tubes 27 respectively with a scraper 31, and one side of the scraper 31 fits with the side of the conical tube 27 away from the tapered mouth, and the outer side of the side tube 9 is connected to a collecting box 23 near the scraper 31.

[0038] First, the fan 1 is started, and the smoke generated during the fire is collected through the air inlet pipe 7. The design of the air inlet pipe 7 is particularly ingenious. Under normal conditions, the air inlet slot 38 is in a closed state, and only the air inlet cover 39 is used for basic air intake to ensure normal ventilation inside the building. However, when a fire occurs, the high temperature causes the wax seals 35 at both ends of the torsion spring shaft 34 to melt, and the torsion spring shaft 34 immediately restores its elasticity, stretching the movable plates 8 in all the air inlet slots 38, so that all the air inlet slots 38 are opened, thereby greatly improving the area and efficiency of air intake and providing sufficient air intake for smoke exhaust operations. After the smoke enters the pipeline system through the air inlet pipe 7, it first passes through the second connecting pipe 6 into the boosting frame 5. Under the action of a specific mechanism, the concave plate 11 in the boosting frame 5 squeezes the gas, which has a boosting effect, further increasing the air volume of the pipeline and the flow rate of the smoke. The boosted smoke then reaches the first connecting pipe 4. At this time, the second motor 25 is started, driving one of all the connecting rods 24 to rotate. Since all the connecting rods 24 are meshedly connected with the rotating tube 20, the rotating tube 20 also rotates accordingly. During the rotation process, the several inclined grooves 29 opened on the rotating tube 20 allow the smoke to pass through the inclined grooves 29 under the action of centrifugation, and at the same time, the dust particles in the smoke are thrown out and enter the connecting tube 10. The connecting tubes 10 are distributed in a circular array along the first connecting tube 4, and one side of each connecting tube 10 is connected to the side tube 9. After the dust enters the side tube 9 through the connecting tube 10, it is filtered by the conical tube 27. The ventilation grooves 28 on the conical tube 27 ensure the ventilation effect during the filtering process. The filtered smoke is then introduced into the outlet pipe 2, and finally drawn out by the fan 1 and discharged outside the building. The filtered dust is gathered at one end of the conical tube 27. Since the conical tube 27 rotates under the action of the connecting rod 24, the scraper 31 can be used to scrape the outer wall of one end of the conical tube 27 to scrape off the accumulated dust. The scraped dust is collected by a collection box 23 connected to the side pipe 9, which avoids the blockage of the pipeline caused by high smoke concentration and improves the patency and air output of the pipeline.

[0039] Embodiment 2

[0040] Reference Figure 1-13 A gear sleeve 37 is sleeved on the outer side of the rotating tube 20, and the inner side of all the connecting tubes 10 is rotatably connected to the first gear 26 through a rotating shaft, and all the first gears 26 are meshed and connected with the gear sleeve 37, and a second gear 30 is sleeved on one end of all the connecting rods 24, and all the second gears 30 are respectively meshed and connected with all the first gears 26.

[0041] When the second motor 25 is started, it drives one of the connecting rods 24 to rotate, and the second gear 30 on the connecting rod 24 rotates accordingly. Since all the second gears 30 are meshed and connected with all the first gears 26, and all the first gears 26 are meshed and connected with the gear sleeve 37, the gear sleeve 37 will rotate with the rotation of the first gear 26. The gear sleeve 37 is sleeved on the outside of the rotating tube 20, thereby driving the rotating tube 20 to rotate in the first connecting tube 4. The rotation of the rotating tube 20 further drives the other connecting rods 24 and the conical cylinder 27 to rotate, realizing the centrifugal separation of smoke and the filtering and collection of dust. This setting achieves the effect of enhancing the transmission stability and improving the rotation efficiency of the rotating tube 20, ensuring the smooth progress of the smoke treatment process.

[0042] Embodiment 3

[0043] Reference Figure 1-13 A plurality of sliders 21 are fixedly connected to the outer walls of both ends of the rotating tube 20 , and all the sliders 21 are slidably connected to the inner wall of the first connecting tube 4 through the annular groove 22 .

[0044] During the rotation of the rotating tube 20, the slider 21 on its outer wall will slide along the annular groove 22 on the inner wall of the first connecting tube 4, playing a supporting and guiding role for the rotating tube 20, ensuring the stability and accuracy of the rotating tube 20 during the rotation. At the same time, the cooperation between the slider 21 and the annular groove 22 also reduces the friction between the rotating tube 20 and the first connecting tube 4, extending the service life of the equipment. This setting achieves the effect of improving the stability of the equipment and reducing friction loss.

[0045] Embodiment 4

[0046] Reference Figure 1-13 The top of the boost frame 5 is fixedly connected to a top plate 12, and one side of the top plate 12 is fixedly connected to a first motor 13 by bolts, and one side of the top plate 12 is rotatably connected to a rotating rod 36, and one end of the rotating rod 36 is fixedly connected to a disc 14, and the other end of the rotating rod 36 passes through the top plate 12 through a bearing sleeve and is transmission-connected to the output shaft of the first motor 13, a support rod 15 is fixedly connected to the top of the concave plate 11, and an annular plate 17 is fixedly connected to the top of the support rod 15, a protrusion 16 is provided on the inner side of the annular plate 17, and one end of the protrusion 16 is fixedly connected to the deviated circular portion of the disc 14, and a one-way valve 33 is installed on both the first connecting pipe 4 and the second connecting pipe 6.

[0047] When the first motor 13 is started, the rotating rod 36 is driven to rotate, and the disc 14 at one end of the rotating rod 36 rotates accordingly. The protrusion 16 on the disc 14 will push the annular plate 17 to reciprocate up and down during the rotation process, and the annular plate 17 drives the concave plate 11 to slide up and down in the supercharging frame 5 through the support rod 15. This setting realizes the extrusion and supercharging of the gas in the supercharging frame 5, and increases the air volume of the pipeline and the flow rate of the smoke. At the same time, the setting of the one-way valve 33 ensures the one-way flow of the gas and prevents the backflow and turbulence of the gas. This setting achieves the effect of enhancing the supercharging effect and increasing the flow rate of the smoke.

[0048] Embodiment 5

[0049] Reference Figure 1-13 A limiting rod 19 is fixedly connected to the top of the annular plate 17 , and a sliding sleeve 18 is sleeved on the limiting rod 19 , and one side of the sliding sleeve 18 is fixedly connected to one side of the top plate 12 .

[0050] In the booster frame 5, when the concave plate 11 slides up and down, the limiting rod 19 limits the annular plate 17. The sliding sleeve 18 is sleeved on the limiting rod 19 and fixedly connected to the top plate 12, ensuring the stability and accuracy of the limiting rod 19. This arrangement prevents the annular plate 17 from deflecting and shaking during the sliding process, thereby improving the stability and reliability of the equipment.

[0051] Embodiment 6

[0052] Reference Figure 1-13 The bottom of the air inlet pipe 7 is connected to an air inlet cover 39, and a plurality of air inlet slots 38 are provided on the top and both sides of the air inlet pipe 7. A movable plate 8 is provided on the inner side of all the air inlet slots 38, and one side of all the movable plates 8 is rotatably connected to the inner walls of all the air inlet slots 38 through a torsion spring shaft 34, and both ends of all the torsion spring shafts 34 are fixedly connected to the air inlet pipe 7 through a wax sealing block 35.

[0053] Under normal conditions, the air inlet slots 38 are in a closed state, and only basic air intake is provided through the air inlet cover 39. When a fire occurs, the high temperature causes the wax sealing blocks 35 at both ends of the torsion spring shaft 34 to melt, and the torsion spring shaft 34 immediately restores its elasticity, stretching open the movable plates 8 in all the air inlet slots 38, so that all the air inlet slots 38 are open. This setting realizes the function of automatically increasing the air inlet area when a fire occurs, improves the air intake efficiency, and provides sufficient air intake for smoke exhaust operations. At the same time, the cooperation between the movable plate 8 and the torsion spring shaft 34 also ensures the sealing and stability of the air inlet slots 38 in the closed state. This setting achieves the effect of improving the air intake efficiency and ensuring the sealing and stability.

[0054] In summary:

[0055] The smoke exhaust duct includes a fan 1, the inlet of the fan 1 is connected to an air outlet pipe 2, a first connecting pipe 4 is provided on one side of the air outlet pipe 2, and one end of the first connecting pipe 4 is connected to one end of the air outlet pipe 2 through a narrow-mouthed pipe 3. The other end of the first connecting pipe 4 is connected to a booster frame 5, and a concave plate 11 is provided in the booster frame 5 for squeezing and boosting the gas. The booster frame 5 is connected to a second connecting pipe 6 on the side away from the first connecting pipe 4, and one end of the second connecting pipe 6 is connected to an air inlet pipe 7 for collecting smoke generated in the event of a fire. The bottom of the air inlet pipe 7 is connected to an air inlet hood 39, and a plurality of air inlet slots 38 are provided on the top and both sides, and a movable plate 8 is provided in the air inlet slot 38, and the movable plate 8 is rotatably connected to the inner wall of the air inlet slot 38 through a torsion spring shaft 34, and both ends of the torsion spring shaft 34 are fixedly connected to the air inlet pipe 7 through a wax sealing block 35. In normal state, the air inlet slot 38 is in a closed state, and only the air inlet hood 39 is used for basic air intake. When a fire occurs, the high temperature melts the wax sealing block 35, and the torsion spring shaft 34 recovers its elasticity, which opens the movable plates 8 in all the air inlet slots 38, greatly improving the air inlet area and efficiency, and providing sufficient air intake for smoke exhaust operations. After the smoke enters the pipeline system through the air inlet pipe 7, it first passes through the second connecting pipe 6 into the boost frame 5. The top of the boost frame 5 is fixedly connected to a top plate 12, one side of the top plate 12 is fixedly connected to a first motor 13 by bolts, and the other side is rotatably connected to a rotating rod 36. One end of the rotating rod 36 is fixedly connected to a disc 14, and the other end passes through the top plate 12 through a bearing sleeve and is transmission-connected to the output shaft of the first motor 13. A support rod 15 is fixedly connected to the top of the concave plate 11, and an annular plate 17 is fixedly connected to the top of the support rod 15. A protrusion 16 is provided on the inner side of the annular plate 17, and one end of the protrusion 16 is fixedly connected to the part of the disc 14 that deviates from the circle. When the first motor 13 is started, it drives the rotating rod 36 and the disc 14 to rotate, and the protrusion 16 on the disc 14 pushes the annular plate 17 to reciprocate up and down. The annular plate 17 drives the concave plate 11 to slide up and down in the supercharging frame 5 through the support rod 15, squeezes and pressurizes the gas, and increases the air volume of the pipeline and the flow rate of the smoke. A one-way valve 33 is installed on the first connecting pipe 4 and the second connecting pipe 6 to ensure the one-way flow of the gas and prevent backflow and turbulence. The pressurized smoke then reaches the first connecting pipe 4. The inner side of the first connecting pipe 4 is rotatably connected to the rotating pipe 20, and the rotating pipe 20 is provided with a plurality of inclined grooves 29. The outer side of the rotating pipe 20 is sleeved with a gear sleeve 37, and the outer side of the first connecting pipe 4 is connected to a plurality of connecting pipes 10 near one end of the rotating pipe 20, and the connecting pipes 10 are distributed in a circular array along the first connecting pipe 4. One side of the inner side of each connecting pipe 10 is rotatably connected to the first gear 26 through a rotating shaft, and the first gear 26 is meshed and connected with the gear sleeve 37. A connecting rod 24 is further provided in the connecting pipe 10 . One end of the connecting rod 24 is located inside the side pipe 9 , and a second gear 30 is sleeved on the other end. The second gear 30 is meshed and connected with the first gear 26 .One side of one of the connecting tubes 10 is fixedly connected with a second motor 25 by bolts, and one end of the connecting rod 24 in the connecting tube 10 passes through the side wall of the connecting tube 10 through a bearing sleeve and is connected to the output shaft of the second motor 25. When the second motor 25 is started, it drives one of the connecting rods 24 to rotate, and the second gear 30 on the connecting rod 24 rotates accordingly, thereby driving the first gear 26 and the gear sleeve 37 to rotate, and the rotating tube 20 also rotates accordingly. During the rotation of the rotating tube 20, smoke passes through the chute 29 under the action of centrifugation, and dust particles are thrown out and enter the connecting tube 10. One side of each connecting tube 10 is connected to a side tube 9, and a conical tube 27 is provided in the side tube 9. The conical mouth of the conical tube 27 is provided with a plurality of ventilation grooves 28 to ensure the ventilation effect during the filtering process. One end of the connecting rod 24 is fixedly connected to the conical tube 27, so the rotation of the rotating tube 20 will drive the other connecting rods 24 and the conical tube 27 to rotate. After the dust enters the side tube 9 through the connecting tube 10, it is filtered by the conical tube 27. An annular fitting plate 32 is fixedly connected to one end of the conical tube 27, and the outer wall of the annular fitting plate 32 fits with the inner wall of the side tube 9. A scraper 31 is fixedly connected to the side of the side tube 9 close to the conical tube 27, and one side of the scraper 31 fits with the side of the conical tube 27 away from the conical mouth. The filtered dust is gathered at one end of the conical tube 27. Since the conical tube 27 rotates under the action of the connecting rod 24, the scraper 31 can be used to scrape the outer wall of one end of the conical tube 27 to scrape off the accumulated dust. The outer side of the side tube 9 is connected to a collecting box 23 near the scraper 31 to collect the scraped dust, avoid clogging the pipeline due to high smoke concentration, and improve the patency and air output of the pipeline. In addition, a number of sliders 21 are fixedly connected to the outer walls at both ends of the rotating tube 20. The sliders 21 are slidably connected to the inner wall of the first connecting tube 4 through the annular groove 22, which plays a supporting and guiding role for the rotating tube 20, ensuring the stability and accuracy of the rotating tube 20 during the rotation process, while reducing friction loss and extending the service life of the equipment. In the boost frame 5, during the up and down sliding of the concave plate 11, the limit rod 19 fixedly connected to the top of the annular plate 17 plays a limiting role. The sliding sleeve 18 is sleeved on the limit rod 19 and fixedly connected to the top plate 12, ensuring the stability and accuracy of the limit rod 19, preventing the annular plate 17 from shifting and shaking during the sliding process, and improving the stability and reliability of the equipment. Through the close cooperation of various components, an efficient and stable smoke exhaust effect is achieved. The design of the air inlet pipe 7 can automatically increase the air inlet area and improve the air inlet efficiency when a fire occurs; the concave plate 11 in the booster frame 5 squeezes and pressurizes the gas under the action of a specific mechanism, thereby increasing the air output of the pipeline and the flow rate of smoke and dust; the coordinated use of the swirl tube 20 and the conical cylinder 27 realizes the centrifugal separation of smoke and dust and the filtering and collection of dust; at the same time, the stability and reliability of each component have also been fully considered to ensure the smooth progress of the smoke exhaust operation.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A smoke exhaust duct for fire fighting, comprising a fan (1), characterized in that: The inlet of the fan (1) is connected to an air outlet pipe (2), and a first connecting pipe (4) is provided on one side of the air outlet pipe (2), and one end of the first connecting pipe (4) is connected to one end of the air outlet pipe (2) through a narrow-mouthed pipe (3), one end of the first connecting pipe (4) is connected to a booster frame (5), and a concave plate (11) is provided on the inner side of the booster frame (5), and a second connecting pipe (6) is connected to the side of the booster frame (5) away from the first connecting pipe (4), and one end of the second connecting pipe (6) is connected to an air inlet pipe (7); The inner side of the first connecting tube (4) is rotatably connected to a rotating tube (20), and a plurality of inclined grooves (29) are provided on the rotating tube (20), and a plurality of connecting tubes (10) are connected to the outer side of the first connecting tube (4) near one end of the rotating tube (20), and all the connecting tubes (10) are distributed in a ring array along the first connecting tube (4), one side of all the connecting tubes (10) is connected to a side tube (9), and a conical cylinder (27) is provided on the inner side of all the side tubes (9), one side of the inner side of all the connecting tubes (10) is rotatably connected to a connecting rod (24), and an extended end of the connecting rod (24) is located on the inner side of the side tube (9), one side of one of the connecting tubes (10) is fixedly connected to a second motor (25) by bolts, and one end of one of the connecting rods (24) passes through a bearing sleeve. The side wall of the connecting tube (10) is drivingly connected to the output shaft of the second motor (25), and one end of all the connecting rods (24) is fixedly connected to all the conical tubes (27), and all the connecting rods (24) are meshingly connected to the rotating tube (20). The conical mouths of all the conical tubes (27) are provided with a plurality of ventilation grooves (28). One end of all the conical tubes (27) is fixedly connected to an annular fitting plate (32), and the outer wall of the annular fitting plate (32) fits with the inner wall of the side tube (9). All the side tubes (9) are fixedly connected to a side close to all the conical tubes (27), and one side of the scraper (31) fits with a side of the conical tube (27) away from the conical mouth, and the outer side of the side tube (9) is connected to a collecting box (23) near the scraper (31).

2. A smoke exhaust pipe for fire fighting according to claim 1, characterized in that: The outer side of the rotating tube (20) is sleeved with a gear sleeve (37), and the inner side of all the connecting tubes (10) is rotatably connected to a first gear (26) via a rotating shaft, and all the first gears (26) are meshingly connected to the gear sleeve (37), and one end of all the connecting rods (24) is sleeved with a second gear (30), and all the second gears (30) are respectively meshingly connected to all the first gears (26).

3. A smoke exhaust pipe for fire fighting according to claim 1, characterized in that: A plurality of sliders (21) are fixedly connected to the outer walls at both ends of the rotating tube (20), and all the sliders (21) are slidably connected to the inner wall of the first connecting tube (4) via an annular groove (22).

4. A smoke exhaust pipe for fire fighting according to claim 1, characterized in that: The top of the boost frame (5) is fixedly connected to a top plate (12), and one side of the top plate (12) is fixedly connected to a first motor (13) by bolts, and one side of the top plate (12) is rotatably connected to a rotating rod (36), and one end of the rotating rod (36) is fixedly connected to a disc (14), and the other end of the rotating rod (36) is connected to an output shaft of the first motor (13) through a bearing sleeve that penetrates the top plate (12). The top of the concave plate (11) is fixedly connected to a support rod (15), and the top end of the support rod (15) is fixedly connected to an annular plate (17), a convex block (16) is provided on the inner side of the annular plate (17), and one end of the convex block (16) is fixedly connected to a portion of the disc (14) that deviates from the circle, and a one-way valve (33) is installed on both the first connecting pipe (4) and the second connecting pipe (6).

5. A smoke exhaust pipe for fire fighting according to claim 4, characterized in that: The top of the annular plate (17) is fixedly connected to a limiting rod (19), and a sliding sleeve (18) is sleeved on the limiting rod (19), and one side of the sliding sleeve (18) is fixedly connected to one side of the top plate (12).

6. The smoke exhaust pipe for fire fighting according to claim 1, characterized in that: The bottom of the air inlet pipe (7) is connected to an air inlet cover (39), and a plurality of air inlet slots (38) are provided on the top and both sides of the air inlet pipe (7), and movable plates (8) are provided on the inner sides of all the air inlet slots (38), and one side of all the movable plates (8) is rotatably connected to the inner walls of all the air inlet slots (38) through a torsion spring rotating shaft (34), and both ends of all the torsion spring rotating shafts (34) are fixedly connected to the air inlet pipe (7) through a wax sealing block (35).

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