Smoke exhaust device based on fire fighting equipment

Abstract

The invention relates to the technical field of fire fighting equipment, in particular to a smoke exhaust device based on fire fighting equipment, which comprises a natural air exhaust mechanism and an air suction and exhaust assembly communicated with the natural air exhaust mechanism, an inductor is arranged on the air suction and exhaust assembly, a mechanical pressurization mechanism and a discontinuous communication mechanism are arranged in the natural air exhaust mechanism, the mechanical pressurization mechanism is communicated with the air suction and exhaust assembly, and the natural air exhaust mechanism and the air suction and exhaust assembly as well as the mechanical pressurization mechanism and the air suction and exhaust assembly can be used for communication between a staircase and an outdoor space; smoke in the staircase can be exhausted, it can be guaranteed that sufficient gas pressure exists in the staircase by introducing sufficient gas into the staircase, and the smoke is prevented from entering the staircase.

Description

Technical Field

[0001] The present invention relates to the technical field of fire fighting equipment, and in particular to a smoke exhaust device based on fire fighting equipment. Background Art

[0002] Among various disasters, fire is one of the most frequent and common major disasters that threaten public safety and social development. Countless people die in fires every year because a large amount of toxic smoke, such as CO, CO2, HCl, etc., will be produced when a fire occurs, and a large amount of heat will be released and a large amount of oxygen will be consumed. According to statistics, more than 50% of the deaths in fires are caused by smoke fumigation and lack of oxygen. Therefore, in order to ensure the safe evacuation of personnel and facilitate fire remediation work, smoke prevention and exhaust devices are generally installed in buildings. Fire-fighting fans are industrial fans that can run continuously for more than 60 minutes at a high temperature of 300°C and continuously run for 20 hours / time at a temperature of 100°C without damage. It can discharge the dirty high-temperature air in the building directly or after purification to the outside, and then replenish fresh air, thereby ensuring the air environment quality requirements of the stairwell. It is a commonly used fire-fighting smoke exhaust device.

[0003] However, existing fire smoke exhaust devices have problems caused by the duplication of mechanical pressurized air supply systems and natural smoke exhaust facilities. The design principle of the mechanical pressurized air supply system is to prevent smoke from entering the evacuation stairwells through positive pressure in the event of a fire, so as to maintain the air quality of these areas, thereby providing a safe passage for personnel evacuation and fire rescue. The natural smoke exhaust facility exhausts the smoke in the stairwell by opening the smoke exhaust windows. When both are turned on at the same time, the mechanical pressurized air supply system attempts to maintain positive pressure, while the natural smoke exhaust facility releases smoke, which makes it difficult to form an effective positive pressure in the stairwell, thereby reducing the smoke prevention effect. In order to solve the above problems, the present invention proposes a smoke exhaust device based on fire-fighting equipment. Summary of the invention

[0004] To achieve the above-mentioned objectives, the present invention provides a smoke exhaust device based on fire-fighting equipment, including a natural exhaust mechanism, and an exhaust gas exhaust component connected to the natural exhaust mechanism, a sensor is arranged on the exhaust gas exhaust component, and a mechanical pressurizing mechanism and an intermittent connecting mechanism are arranged in the natural exhaust mechanism, wherein the mechanical pressurizing mechanism is connected to the exhaust gas exhaust component, and the natural exhaust mechanism and the exhaust gas exhaust component, as well as the mechanical pressurizing mechanism and the exhaust gas exhaust component can be used for connecting the stairwell and the outdoors, and when working, when the sensor senses the occurrence of a fire, it drives the intermittent connecting mechanism to intermittently block the mechanical pressurizing mechanism and the exhaust gas exhaust component, as well as the natural exhaust mechanism and the exhaust gas exhaust component, so as to intermittently ventilate the stairwell and exhaust smoke outside the stairwell.

[0005] Optionally, the natural exhaust mechanism includes a shell and an exhaust fan arranged in the shell, a first connecting box is fixedly arranged on the outer wall of the shell, a first air duct is fixedly plugged into the side panel of the first connecting box, the first air duct is used to connect the air inlet end of the exhaust fan with the first connecting box, and the first air duct is connected to the exhaust gas exhaust component, the mechanical pressurizing mechanism includes a second air duct, a booster and a third air duct that are connected, the booster is arranged between the second air duct and the third air duct, the third air duct is fixedly plugged into the side panel of the first connecting box, the second air duct, the booster and the third air duct are used to connect the outside of the stairwell with the exhaust gas exhaust component.

[0006] Optionally, the exhaust assembly includes a second connecting box fixedly arranged in the first connecting box, the second connecting box being connected to the first air duct and the second air duct, a fourth air duct is fixedly inserted into the side panel of the second connecting box and the bottom plate of the first connecting box, the lower end of the fourth air duct extends to the exhaust pipe, the exhaust pipe is fixedly arranged on the lower end surface of the first connecting box, a smoke extraction window and a ventilation booster window are arranged on the exhaust pipe, the smoke extraction window is arranged above the ventilation booster window, the upper end opening cover of the second connecting box is provided with a sealing cover, a sealing block is provided on the upper end surface of the sealing cover, the first air duct and the second air duct are arranged on the same side panel of the second connecting box, and the fourth air duct and the first air duct and the second air duct are respectively arranged on two opposite side panels of the second connecting box.

[0007] Optionally, the intermittent connecting mechanism includes a partition plate movably arranged in the second connecting box, the partition plate and the inner side wall of the second connecting box are slidably arranged, a driving groove is opened on the upper end surface of the partition plate, and the first straight racks are fixedly connected to the opposite side walls of the driving groove, a missing gear is arranged between the two first straight racks, the missing gear and the two first straight racks are alternately meshed with each other, the missing gear is fixedly sleeved outside the first rotating rod, the upper end of the first rotating rod is fixedly arranged on the driving end of the driving motor, the driving motor is fixedly arranged on the inner top wall of the first connecting box, and the first rotating rod is movably inserted into the blocking block.

[0008] Optionally, the intermittent connection mechanism also includes a first guide assembly, one end of the first guide assembly is fixedly connected to the side wall of the partition plate, and the other end of the first guide assembly is fixedly connected to the inner wall of the first connecting box, the first guide assembly includes a first guide rod, a first guide cylinder and a first guide spring, the first guide rod is movably inserted in the first guide cylinder, the first guide spring is wound and arranged outside the first guide rod, and one end of the first guide spring is fixedly connected to the side wall of the first guide rod, the other end of the first guide spring is fixedly connected to the side wall of the first guide cylinder, the first guide cylinder is fixedly arranged on the inner wall of the second connecting box, and the first guide rod is fixedly arranged on the partition plate.

[0009] Optionally, it also includes an intermittent control mechanism, which includes a first electrode contact fixedly arranged on the first side wall of the partition plate, a second electrode contact is abutted on the side wall of the first electrode contact, a first connecting spring is fixedly arranged on the side wall of the second electrode contact, and the free end of the first connecting spring is fixedly connected to the inner side wall of the first connecting box; the intermittent control mechanism also includes a third electrode contact fixedly arranged on the second side wall of the partition plate, a fourth electrode contact matching the third electrode contact is arranged in the first connecting box, a second connecting spring is fixedly arranged on the side wall of the fourth electrode contact, and the free end of the second connecting spring is fixedly connected to the inner side wall of the first connecting box, and the first side wall and the second side wall are arranged relative to each other.

[0010] The cam is an airtight container, the first end of which is provided with a first gear and the second end of which is provided with a second gear, the second gear is connected to the first gear through a linking mechanism, and the two ends of the first gear are connected to the cam by a threaded connection.

[0011] Optionally, the connecting assembly includes a spiral rod fixedly sleeved on the outside of the second rotating rod, the spiral rod threadedly inserted in the internal threaded tube, the internal threaded tube fixedly inserted on the moving block, the side wall of the moving block is fixedly connected with a connecting block, the free end of the connecting block is fixedly connected to the sealing plate, one end of the second guide assembly is fixedly provided on the upper end surface of the moving block, the other end of the second guide assembly is fixedly connected to the lower end surface of the limit block, the limit block is fixedly provided on the inner side wall of the exhaust pipe, the second guide assembly includes a second guide rod, a second guide cylinder and a second guide spring, the second guide rod is movably inserted in the second guide cylinder, the second guide spring is wound outside the second guide rod, and the two ends of the second guide spring are respectively fixedly connected to the side wall of the second guide rod and the outer side wall of the second guide cylinder.

[0012] Optionally, a sealing assembly is further included, which includes a sealing plug movably inserted in the through hole, a movable hole is opened on the sealing plug, the transmission belt is movably inserted in the movable hole, an extension edge is fixedly provided on the sealing plug, a limiting ball is fixedly provided on the side wall of the extension edge, the limiting ball is movably provided in a limiting groove, the limiting groove is opened on the second connecting box, and the limiting ball is made of elastic material.

[0013] Optionally, it also includes a swing mechanism, which includes a swing hole opened on the exhaust pipe, the ventilation and pressurization window is movably arranged in the swing hole, a connecting plate is fixedly connected to the side wall of the ventilation and pressurization window, the free end of the connecting plate is fixedly connected to the swing plate, the swing plate is fixedly arranged on a fourth rotating rod, the fourth rotating rod is rotatably arranged on a support tube, the support tube is fixedly arranged on the inner side wall of the exhaust pipe, the side wall of the swing plate is abutted against a blocking plate, the blocking plate is fixedly arranged on the inner side wall of the support tube, the number of the blocking plates is two, there is a ventilation hole between the two blocking plates, the number of the swing plates is two, the two swing plates and the fourth rotating rod form a blocking structure for blocking the ventilation hole, the side wall of the swing plate is fixedly connected to a reset spring, and the free end of the reset spring is fixedly connected to the inner side wall of the support tube.

[0014] The beneficial effects of the present invention are as follows: The present invention improves the structure of the existing smoke exhaust device. The improved natural exhaust mechanism and mechanical pressurization mechanism are separately arranged, and can perform smoke exhaust operations to the outside of the stairwell and exhaust operations to the inside of the stairwell separately, and an intermittent connecting mechanism is provided for intermittently blocking the natural exhaust mechanism and the mechanical pressurization mechanism, so that it can be ensured that the smoke exhaust of the natural exhaust mechanism and the ventilation of the mechanical pressurization mechanism are not carried out at the same time. Through the arrangement of the intermittent connecting mechanism, the smoke exhaust of the natural exhaust mechanism and the combined structure of the mechanical pressurization mechanism of the present invention, the smoke in the stairwell can be exhausted, and sufficient gas can be introduced into the stairwell to ensure that there is sufficient gas pressure in the stairwell, thereby blocking smoke from entering the stairwell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of an embodiment of a smoke exhaust device based on fire fighting equipment of the present invention; Figure 2 The smoke exhaust device based on fire fighting equipment of the present invention Figure 1 A schematic diagram of the internal structure of the first connecting box; Figure 3 The smoke exhaust device based on fire fighting equipment of the present invention Figure 2 A schematic diagram of the enlarged structure in the middle; Figure 4 The smoke exhaust device based on fire fighting equipment of the present invention Figure 2 Middle B is an enlarged schematic diagram of the structure; Figure 5 It is a schematic diagram of the structure of the blocking mechanism provided in the first connecting box and the exhaust pipe in the smoke exhaust device based on the fire-fighting equipment of the present invention; Figure 6 The smoke exhaust device based on fire fighting equipment of the present invention Figure 5 A magnified schematic diagram of the C structure; Figure 7 It is a partial cross-sectional structural schematic diagram of a blocking mechanism of the smoke exhaust device of the fire-fighting equipment provided in the first connecting box according to the present invention; Figure 8 It is a structural schematic diagram of a sealing component arranged in a through hole in a smoke exhaust device based on fire-fighting equipment of the present invention; Fig. 9 The smoke exhaust device based on fire fighting equipment of the present invention Figure 8 The enlarged schematic diagram of the D structure; Fig.10 The smoke exhaust device based on fire fighting equipment of the present invention Figure 1 Schematic diagram of the partial structure of the central extraction and drainage pipe; Fig.11 The smoke exhaust device based on fire fighting equipment of the present invention Fig.10 A magnified schematic diagram of the structure in middle E.

[0016] Description of Reference Numerals Natural exhaust mechanism 1, shell 11, exhaust fan 12, first connecting box 13, first air duct 14, mechanical pressurizing mechanism 2, second air duct 21, supercharger 22, third air duct 23, exhaust assembly 3, second connecting box 31, fourth air duct 32, exhaust pipe 33, smoke window 34, ventilation and pressurization window 35, blocking cover 36, blocking block 37, intermittent connecting mechanism 4, partition plate 41, driving groove 42, first straight rack 43, missing gear 44, first rotating rod 45, driving motor 46, first guide assembly 47, first guide rod 471, first guide cylinder 472, first guide spring 473, intermittent control mechanism 5, first electrode contact sheet 51, second electrode contact sheet 52, first connecting spring 53, third electrode contact sheet 54, fourth electrode contact sheet 5 5. second connecting spring 56, blocking mechanism 6, through hole 61, transmission belt 62, first transmission wheel 63, second rotating rod 64, connecting assembly 65, screw rod 651, internal threaded tube 652, moving block 653, connecting block 654, second guide assembly 655, second guide rod 6551, second guide cylinder 6552, second guide spring 6553, limit block 656, blocking plate 66, second transmission wheel 67, third rotating rod 68, driving gear 69, second spur rack 610, sensor 7, sealing assembly 8, sealing plug 81, extension edge 82, moving hole 83, limit ball 84, limit groove 85, swing mechanism 9, swing hole 91, connecting plate 92, swing plate 93, fourth rotating rod 94, blocking plate 95, support tube 96, reset spring 97. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0018] In view of the problems existing in the prior art, an embodiment of the present invention provides a smoke exhaust device based on fire fighting equipment, such as Figure 1As shown, the smoke exhaust device based on fire-fighting equipment includes a natural exhaust mechanism 1, and an exhaust assembly 3 connected to the natural exhaust mechanism 1, and the natural exhaust mechanism 1 is used to exhaust smoke in the stairwell. The exhaust assembly 3 is provided with a sensor 7, and the setting of the sensor 7 is used for intelligent control of the equipment. The sensor 7 can be a smoke sensor, but is not limited to a smoke sensor. A mechanical pressurizing mechanism 2 and an intermittent connecting mechanism 4 are provided in the natural exhaust mechanism 1, wherein the mechanical pressurizing mechanism 2 is connected to the exhaust assembly 3, and the natural exhaust mechanism 1 and the exhaust assembly 3, as well as the mechanical pressurizing mechanism 2 and the exhaust assembly 3 can be used for connecting the stairwell and the outdoors, which can be understood as the natural exhaust mechanism 1 and the exhaust assembly 3 are one gas channel, and the mechanical pressurizing mechanism 2 and the exhaust assembly 3 are another gas channel. During operation, when the sensor 7 senses a fire, it drives the intermittent connection mechanism 4 to intermittently block the mechanical pressurizing mechanism 2 and the exhaust assembly 3, as well as the natural exhaust mechanism 1 and the exhaust assembly 3, so as to intermittently ventilate the stairwell and exhaust smoke to the outside of the stairwell.

[0019] In this embodiment, the gas passage composed of the natural exhaust mechanism 1 and the exhaust gas extraction component 3, and the gas passage composed of the mechanical pressurizing mechanism 2 and the exhaust gas extraction component 3, will be intermittently blocked by the intermittent connecting mechanism 4. Specifically, when the intermittent connecting mechanism 4 blocks the gas passage composed of the natural exhaust mechanism 1 and the exhaust gas extraction component 3, the mechanical pressurizing mechanism 2 ventilates the stairwell; when the intermittent connecting mechanism 4 blocks the gas passage composed of the mechanical pressurizing mechanism 2 and the exhaust gas extraction component 3, the natural exhaust mechanism 1 exhausts smoke outside the stairwell.

[0020] In one embodiment, Figure 1 and Figure 2As shown, the natural exhaust mechanism 1 includes a shell 11, which is embedded in the wall or fixed outside the wall. And an exhaust fan 12 is arranged in the shell 11, and a first connecting box 13 is fixedly arranged on the outer wall of the shell 11. A first air duct 14 is fixedly plugged on the side plate of the first connecting box 13. The first air duct 14 is used for connecting the air inlet end of the exhaust fan 12 with the first connecting box 13, and the first air duct 14 is connected to the exhaust assembly 3. The mechanical pressurizing mechanism 2 includes a second air duct 21, a supercharger 22 and a third air duct 23 that are connected. It can be understood that the second air duct 21 is connected to the right end air outlet of the supercharger 22, and the third air duct 23 is connected to the left end air inlet of the supercharger 22. The booster 22 is arranged between the second air duct 21 and the third air duct 23. The third air duct 23 is fixedly plugged into the side panel of the first connecting box 13. The second air duct 21, the booster 22 and the third air duct 23 are used for connecting the outside of the stairwell with the exhaust assembly 3.

[0021] In one embodiment, Figure 1 and Figure 2 As shown, the exhaust assembly 3 includes a second connecting box 31 fixedly arranged in the first connecting box 13, the second connecting box 31 is connected to the first air duct 14 and the second air duct 21, and a fourth air duct 32 is fixedly inserted on the side plate of the second connecting box 31 and the bottom plate of the first connecting box 13, and the lower end of the fourth air duct 32 extends to the exhaust pipe 33, and the fourth air duct 32 is an "L" shaped structure. The exhaust pipe 33 is fixedly arranged on the lower end surface of the first connecting box 13, and is provided with a smoke extraction window 34 and a ventilation and pressurization window 35. The smoke extraction window 34 is arranged above the ventilation and pressurization window 35. The smoke extraction window 34 in this embodiment is used for exhausting smoke, and the ventilation and pressurization window 35 is used for ventilating the stairwell. This setting is intended to utilize the floating characteristic of smoke so that the smoke can be more quickly and completely extracted out of the stairwell. At the same time, the introduced gas can be directly transported to the range where people can breathe, and the introduced gas can push the smoke upward from the bottom, so that the smoke can be further away from the crowd. The upper end opening cover of the second connecting box 31 is provided with a blocking cover 36, and a blocking block 37 is provided on the upper end surface of the blocking cover 36. The first air duct 14 and the second air duct 21 are arranged on the same side panel of the second connecting box 31 (which can be understood as the left side panel of the second connecting box 31), and the fourth air duct 32 and the first air duct 14 and the second air duct 21 are respectively arranged on the two opposite side panels of the second connecting box 31 (which can be understood as the fourth air duct 32 is arranged on the right side panel of the second connecting box 31).

[0022] In one embodiment, Figure 2As shown, the intermittent connecting mechanism 4 includes a partition plate 41 movably arranged in the second connecting box 31, and the partition plate 41 is slidably arranged with the inner wall of the second connecting box 31, and the partition plate 41 can move back and forth in the second connecting box 31; the partition plate 41 can be used to block the right end of the first air duct 14 and the right end of the second air duct 21, and the blocking of the first air duct 14 and the second air duct 21 are not performed at the same time, that is, when the second air duct 21 is blocked, the first air duct 14 is not blocked. A driving groove 42 is provided on the upper end surface of the partition plate 41, and first straight racks 43 are fixedly connected to the opposite side walls of the driving groove 42 (which can be understood as the left wall and the right wall), and a missing gear 44 is provided between the two first straight racks 43. The missing gear 44 and the two first straight racks 43 are alternately meshed with each other, and the missing gear 44 is fixedly sleeved on the outside of a first rotating rod 45. The upper end of the first rotating rod 45 is fixedly set on the driving end of a driving motor 46. The driving motor 46 is fixedly set on the inner top wall of the first connecting box 13, and the first rotating rod 45 is movably inserted into the blocking block 37.

[0023] During operation, when the sensor 7 senses a fire, the sensor 7 will control the drive motor 46, the exhaust fan 12 and the supercharger 22 to start synchronously; the start of the drive motor 46 will cause the missing gear 44 to rotate through the first rotating rod 45. Since the missing gear 44 is alternately meshed with the two first straight racks 43, the missing gear 44 and the two first straight racks 43 will cause the partition plate 41 to move forward and backward in a circular motion. When the partition plate 41 moves backward, it will block the right end of the second air duct 21, such as Figure 2 For example, at this time, the exhaust fan 12 will extract the smoke in the stairwell through the first air duct 14, the second connecting box 31, the fourth air duct 32, the exhaust pipe 33 and the smoke window 34; similarly, when the partition plate 41 moves forward, it will block the right end of the first air duct 14. At this time, the booster 22 will input the drawn gas into the stairwell through the second air duct 21, the second connecting box 31, the fourth air duct 32, the exhaust pipe 33 and the ventilation booster window 35. The introduction of gas will increase the gas pressure in the stairwell on the one hand, preventing smoke from entering the stairwell, and on the other hand, it will push the smoke in the stairwell upward and away from the crowd. In the above example, the exhaust fan 12 and the booster 22 are both controlled by the sensor 7.

[0024] In one embodiment, Figure 2 and Figure 3As shown, the intermittent connection mechanism 4 also includes a first guide assembly 47, one end of which is fixedly connected to the side wall of the partition plate 41, and the other end of which is fixedly connected to the inner wall of the first connection box 13. The first guide assembly 47 is provided to guide and support the movement of the partition plate 41, so that the partition plate 41 can only perform a circular movement in the front-back direction. The first guide assembly 47 includes a first guide rod 471, a first guide cylinder 472 and a first guide spring 473. The first guide rod 471 is movably inserted in the first guide cylinder 472, the first guide spring 473 is wound outside the first guide rod 471, and one end of the first guide spring 473 is fixedly connected to the side wall of the first guide rod 471, and the other end of the first guide spring 473 is fixedly connected to the side wall of the first guide cylinder 472. The first guide cylinder 472 is fixedly provided on the inner wall of the second connection box 31, and the first guide rod 471 is fixedly provided on the partition plate 41.

[0025] In the process of the aforementioned sensor 7 controlling the exhaust fan 12 and the supercharger 22, the sensor 7 will synchronously control the exhaust fan 12 and the supercharger 22, so that when the partition plate 41 blocks the first air duct 14 or the second air duct 21, the exhaust fan 12 and the supercharger 22 are both working. Specifically, when the partition plate 41 blocks the first air duct 14, the operation of the exhaust fan 12 will continue to extract the gas in the first air duct 14, generating a negative pressure, so that the partition plate 41 is tightly attached to the inner wall of the second connecting box 31, which will affect the backward movement of the partition plate 41. When the partition plate 41 blocks the second air duct 21, the operation of the supercharger 22 will cause a large amount of gas to be quickly added to the second air duct 21, causing the air pressure in the second air duct 21 to increase rapidly, which will bring certain safety hazards and even cause an explosion. In order to solve the above problems, in one embodiment, Figure 2 , Figure 3 and Figure 4 As shown, the smoke exhaust device based on fire-fighting equipment also includes an intermittent control mechanism 5. The intermittent control mechanism 5 is configured to control the start and stop of the exhaust fan 12 and the booster 22, which can solve the above-mentioned technical problems. Specifically, when the partition plate 41 blocks the second air duct 21, the exhaust fan 12 is controlled to start and the booster 22 is controlled to be turned off. When the partition plate 41 blocks the first air duct 14, the exhaust fan 12 is controlled to be turned off and the booster 22 is controlled to start.

[0026] Specifically, in one example, Figure 3As shown, the intermittent control mechanism 5 includes a first electrode contact piece 51 fixedly arranged on the first side wall (which can be understood as the rear side wall) of the partition plate 41, and a second electrode contact piece 52 is arranged on the side wall of the first electrode contact piece 51 in abutment with it. Figure 3 As shown in the example, in this example, the partition plate 41 is used to block the second air duct 21. A first connecting spring 53 is fixedly provided on the side wall of the second electrode contact 52, and the free end of the first connecting spring 53 is fixedly connected to the inner wall of the first connecting box 13. In this embodiment, the contact between the second electrode contact 52 and the first electrode contact 51 is used to control the series circuit of the exhaust fan 12 to work. In this state, the exhaust fan 12 works and the supercharger 22 does not work.

[0027] In another example, Figure 4 As shown, the intermittent control mechanism 5 also includes a third electrode contact 54 fixedly arranged on the second side wall (which can be understood as the front side wall) of the partition plate 41, and a fourth electrode contact 55 matching the third electrode contact 54 is arranged in the first connecting box 13, and a second connecting spring 56 is fixedly arranged on the side wall (which can be understood as the front side wall) of the fourth electrode contact 55, and the free end (which can be understood as the front end) of the second connecting spring 56 is fixedly connected to the inner side wall of the first connecting box 13, and the first side wall and the second side wall are arranged opposite to each other. Figure 4 In the example, the third electrode contact 54 and the fourth electrode contact 55 are separately arranged. At this time, the series circuit for controlling the operation of the supercharger 22 is not connected. When the partition plate 41 moves forward, the third electrode contact 54 will move forward. When the third electrode contact 54 contacts the fourth electrode contact 55, the series circuit for controlling the start of the supercharger 22 is connected, and the supercharger 22 starts working. It is worth noting that at the moment the third electrode contact 54 contacts the fourth electrode contact 55, the first electrode contact 51 and the second electrode contact 52 are separated, and the exhaust fan 12 stops working.

[0028] In order to better separate the smoke exhaust process and the ventilation process, in one embodiment, Figure 5 As shown, the exhaust fan 12 also includes a blocking mechanism 6, which is used to intermittently block the smoke extraction window 34 and the ventilation boost window 35. Specifically, when exhausting smoke, the blocking mechanism 6 blocks the ventilation boost window 35, and when ventilating, the blocking mechanism 6 blocks the smoke extraction window 34. The purpose of this arrangement is to ensure that only smoke from the smoke layer is extracted during smoke exhaust, and to prevent the fresh air from mixing with the smoke during ventilation.

[0029] Specifically, in one example, Figure 5 and Figure 7As shown, the blocking mechanism 6 includes a through hole 61 opened on the side plate (which can be understood as the right side plate) of the second connecting box 31, a transmission belt 62 is movably arranged in the through hole 61, one end (which can be understood as the right end) of the transmission belt 62 is transmission-connected with a first transmission wheel 63, the first transmission wheel 63 is fixedly sleeved outside the second rotating rod 64, the second rotating rod 64 is rotatably arranged on the fourth air guide pipe 32, the lower end of the second rotating rod 64 extends into the exhaust pipe 33, and two connecting components 65 are arranged on the second rotating rod 64, and a blocking plate is matched with the connecting component 65 66, the two blocking plates 66 are respectively matched with the smoke extraction window 34 and the ventilation and pressurization window 35, and the other end of the transmission belt 62 (which can be understood as the left end) is drivingly connected with a second transmission wheel 67, and the second transmission wheel 67 is fixedly sleeved outside the third rotating rod 68, and the third rotating rod 68 is rotatably set on the inner bottom wall of the second connecting box 31, and the third rotating rod 68 is fixedly sleeved with a driving gear 69 outside, and the driving gear 69 is meshed with the second spur rack 610, and the second spur rack 610 is fixedly set on the side wall of the partition plate 41 (which can be understood as the right side wall).

[0030] In one embodiment, Figure 6 As shown, the connecting assembly 65 includes a screw rod 651 fixedly sleeved on the outside of the second rotating rod 64, the screw rod 651 is threadedly inserted in the internal threaded tube 652, the internal threaded tube 652 is fixedly inserted on the moving block 653, the right side wall of the moving block 653 is fixedly connected with a connecting block 654, and the free end (which can be understood as the right end) of the connecting block 654 is fixedly connected to the blocking plate 66. One end of the second guide assembly 655 is fixedly arranged on the upper end surface of the moving block 653, and the other end of the second guide assembly 655 is fixedly connected to the lower end surface of the limit block 656, and the limit block 656 is fixedly arranged on the inner side wall of the pumping and exhausting pipe 33. The combination structure of the second guide assembly 655 and the limit block 656 is used to limit the movement of the moving block 653, so that the moving block 653 can only move in the vertical direction. The second guide assembly 655 includes a second guide rod 6551, a second guide cylinder 6552 and a second guide spring 6553. The second guide rod 6551 is movably inserted in the second guide cylinder 6552, and the second guide spring 6553 is wound outside the second guide rod 6551, and the two ends of the second guide spring 6553 are respectively fixedly connected to the side wall of the second guide rod 6551 and the outer side wall of the second guide cylinder 6552.

[0031] It is worth noting that since the partition plate 41 is in a forward and backward cyclic motion, the second rotating rod 64 will rotate during the motion in these two directions, thereby causing the blocking plate 66 to cyclically move upward or downward. When the blocking plate 66 moves downward, the lower blocking plate 66 will block the ventilation booster window 35, and the smoke window 34 will be opened. At this time, Figure 2 In the example, the partition plate 41 blocks the second air duct 21, and the supercharger 22 stops working. The opposite principle is the same and will not be described here. Specifically, when the partition plate 41 moves forward, it will drive the second spur rack 610 to move forward. The forward movement of the second spur rack 610 will drive the driving gear 69 to rotate. The rotation of the driving gear 69 will drive the second rotating rod 64 to rotate through the third rotating rod 68, the second transmission wheel 67, the transmission belt 62 and the first transmission wheel 63. The rotation of the second rotating rod 64 will drive the screw rod 651 to rotate. Since the screw rod 651 is threadedly inserted in the internal threaded tube 652, and since the second Due to the restrictions of the guide assembly 655 and the limit block 656, the movable block 653 can only move upward in the vertical direction. The upward movement of the movable block 653 will bring the sealing plate 66 upward through the connecting block 654. The upward movement of the sealing plate 66 will cause the upper sealing plate 66 to block the smoke exhaust window 34, and the ventilation and pressurization window 35 is opened. At this time, the partition plate 41 is used to block the first air duct 14, and the supercharger 22 works. On the contrary, the principle of the backward movement of the partition plate 41 is the same and will not be repeated here.

[0032] In order to prevent the gas entering the second connecting box 31 from being discharged to the outside of the second connecting box 31 through the through hole 61, in one embodiment, as shown in FIG. Figure 8 and Fig. 9 As shown, the smoke exhaust device based on fire fighting equipment also includes a sealing component 8, and the setting of the sealing component 8 is used to seal the through hole 61 to prevent the gas in the second connecting box 31 from being discharged through the through hole 61. It is worth noting that the structural design of the sealing component 8 is reasonable and will not affect the movement of the transmission belt 62. The sealing component 8 includes a sealing plug 81 that is movably inserted in the through hole 61, and a movable hole 83 is opened on the sealing plug 81. The transmission belt 62 is movably inserted in the movable hole 83. An extension edge 82 is fixedly provided on the sealing plug 81, and a limiting ball 84 is fixedly provided on the side wall of the extension edge 82. The limiting ball 84 is movably set in a limiting groove 85. The limiting groove 85 is opened on the second connecting box 31, and the limiting ball 84 is made of elastic material. In this embodiment, the structural design of the sealing component 8 is reasonable, which can realize the convenient installation and disassembly of the sealing component 8 and the second connecting box 31.

[0033] In order to make the gas introduced into the stairwell have different directions, so that oxygen can be more quickly dispersed into the stairwell, in one embodiment, Fig.10 and Fig.11 As shown, the smoke exhaust device based on fire-fighting equipment also includes a swing mechanism 9. The setting of the swing mechanism 9 can control the ventilation and pressurization window 35 to swing, so that the fresh gas introduced can be introduced into the stairwell in different directions. Moreover, the structural design of the swing mechanism 9 is reasonable, and the swing of the ventilation and pressurization window 35 can be controlled without adding a power source. The swing mechanism 9 includes a swing hole 91 provided on the exhaust pipe 33, and the ventilation and pressurization window 35 is movably arranged in the swing hole 91. A connecting plate 92 is fixedly connected to the side wall of the ventilation and pressurization window 35, and the free end of the connecting plate 92 (which can be understood as the left end) is fixedly connected to the swing plate 93. The swing plate 93 is fixedly set on the fourth rotating rod 94, and the fourth rotating rod 94 is rotatably set on the support tube 96. It should be understood that the front end of the support tube 96 also has a front plate. Fig.11 This is a display example after the front plate is cut off, and this display is for better observation of the interior of the support tube 96 and better understanding of the purpose of the present invention. The support tube 96 is fixedly arranged on the inner side wall of the pumping and exhausting tube 33, and the side wall of the swing plate 93 is abutted against a blocking plate 95, and the blocking plate 95 is fixedly arranged on the inner side wall of the support tube 96. There are two blocking plates 95, and there is a ventilation hole between the two blocking plates 95. There are two swing plates 93, and the two swing plates 93 and the fourth rotating rod 94 form a blocking structure for blocking the ventilation hole. A return spring 97 is fixedly connected to the side wall of the swing plate 93, and the free end of the return spring 97 is fixedly connected to the inner side wall of the support tube 96.

[0034] During smoke exhaust, the blocking plate 66 is used to block the left end of the support tube 96. When no gas enters the support tube 96, the blocking structure is used to block the ventilation hole. When gas enters the support tube 96, as the gas on the left side of the blocking structure increases, the blocking structure will be pushed to rotate counterclockwise. The rotation of the blocking structure will cause the ventilation booster window 35 to rotate through the connecting plate 92. When the blocking structure is pushed to separate from the blocking plate 95, the ventilation hole is opened. At this time, the gas enters the stairwell through the ventilation booster window 35. When the air pressure on the left side of the blocking structure is less than the reset force of the reset spring 97, the blocking structure is pulled to perform a clockwise reset movement. It is worth noting that as long as gas enters the support tube 96, the counterclockwise and clockwise movements of the blocking structure will be cyclically performed, which will cause the ventilation booster window 35 to swing, thereby changing the direction of the gas entering the stairwell through the ventilation booster window 35, so that fresh air can quickly fill the stairwell.

[0035] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A smoke exhaust device based on fire fighting equipment, characterized in that: The invention comprises a natural exhaust mechanism (1), and an exhaust assembly (3) connected to the natural exhaust mechanism (1), wherein the exhaust assembly (3) is provided with a sensor (7), and a mechanical pressurizing mechanism (2) and an intermittent connecting mechanism (4) are provided in the natural exhaust mechanism (1), wherein the mechanical pressurizing mechanism (2) is connected to the exhaust assembly (3), and the natural exhaust mechanism (1) and the exhaust assembly (3), as well as the mechanical pressurizing mechanism (2) and the exhaust assembly (3) can be used to connect the stairwell with the outdoors. When the sensor (7) senses the occurrence of a fire, it drives the intermittent connecting mechanism (4) to intermittently block the mechanical pressurizing mechanism (2) and the exhaust assembly (3), as well as the natural exhaust mechanism (1) and the exhaust assembly (3), so as to intermittently ventilate the stairwell and exhaust smoke outside the stairwell.

2. The smoke exhaust device based on fire fighting equipment according to claim 1, characterized in that: The natural exhaust mechanism (1) comprises a shell (11), and an exhaust fan (12) arranged in the shell (11); a first connecting box (13) is fixedly arranged on the outer wall of the shell (11); a first air guide pipe (14) is fixedly plugged into a side plate of the first connecting box (13); the first air guide pipe (14) is used for connecting the air inlet end of the exhaust fan (12) with the first connecting box (13); and the first air guide pipe (14) is connected to the exhaust assembly (3). The mechanical pressurizing mechanism (2) comprises a second air duct (21), a booster (22) and a third air duct (23) which are arranged in communication with each other. The booster (22) is arranged between the second air duct (21) and the third air duct (23). The third air duct (23) is fixedly plugged into a side plate of the first connecting box (13). The second air duct (21), the booster (22) and the third air duct (23) are used for communication between the outside of the stairwell and the exhaust assembly (3).

3. The smoke exhaust device based on fire fighting equipment according to claim 2, characterized in that: The exhaust assembly (3) comprises a second connecting box (31) fixedly arranged in the first connecting box (13); the second connecting box (31) is connected to the first air duct (14) and the second air duct (21); a fourth air duct (32) is fixedly plugged into a side plate of the second connecting box (31) and a bottom plate of the first connecting box (13); the lower end of the fourth air duct (32) extends to an exhaust pipe (33); the exhaust pipe (33) is fixedly arranged on the lower end surface of the first connecting box (13); and a smoke exhaust window is arranged on the exhaust pipe (33). (34) and a ventilation and pressurizing window (35), the smoke extraction window (34) being arranged above the ventilation and pressurizing window (35), the upper end opening cover of the second connecting box (31) being provided with a blocking cover (36), the upper end surface of the blocking cover (36) being provided with a blocking block (37), the first air duct (14) and the second air duct (21) being arranged on the same side plate of the second connecting box (31), and the fourth air duct (32) and the first air duct (14) and the second air duct (21) being respectively arranged on two opposite side plates of the second connecting box (31).

4. The smoke exhaust device based on fire fighting equipment according to claim 3 is characterized in that: The intermittent connection mechanism (4) comprises a partition plate (41) movably arranged in the second connection box (31), the partition plate (41) and the inner side wall of the second connection box (31) being slidably arranged, a driving groove (42) being provided on the upper end surface of the partition plate (41), first straight racks (43) being fixedly connected to the opposite side walls of the driving groove (42), a missing gear (44) being arranged between the two first straight racks (43), the missing gear (44) and the two first straight racks (43) being alternately meshed with each other, the missing gear (44) being fixedly sleeved outside a first rotating rod (45), the upper end of the first rotating rod (45) being fixedly arranged on the driving end of a driving motor (46), the driving motor (46) being fixedly arranged on the inner top wall of the first connection box (13), and the first rotating rod (45) being movably plugged into the blocking block (37).

5. The smoke exhaust device based on fire fighting equipment according to claim 4, characterized in that: The intermittent connection mechanism (4) further comprises a first guide assembly (47), one end of the first guide assembly (47) being fixedly connected to the side wall of the partition plate (41), and the other end of the first guide assembly (47) being fixedly connected to the inner side wall of the first connection box (13); the first guide assembly (47) comprising a first guide rod (471), a first guide cylinder (472) and a first guide spring (473); the first guide rod (471) being movably inserted in the first guide cylinder (472), the first guide spring (473) being wound around the outside of the first guide rod (471), and one end of the first guide spring (473) being fixedly connected to the side wall of the first guide rod (471), and the other end of the first guide spring (473) being fixedly connected to the side wall of the first guide cylinder (472); the first guide cylinder (472) being fixedly arranged on the inner side wall of the second connection box (31), and the first guide rod (471) being fixedly arranged on the partition plate (41).

6. The smoke exhaust device based on fire fighting equipment according to claim 5, characterized in that: The invention also comprises an intermittent control mechanism (5), the intermittent control mechanism (5) comprising a first electrode contact (51) fixedly arranged on the first side wall of the partition plate (41), a second electrode contact (52) being arranged on the side wall of the first electrode contact (51) in abutment with the second electrode contact (52), a first connecting spring (53) being fixedly arranged on the side wall of the second electrode contact (52), a free end of the first connecting spring (53) being fixedly connected to the inner side wall of the first connecting box (13), the intermittent control mechanism (5) further comprising a third electrode contact (54) fixedly arranged on the second side wall of the partition plate (41), a fourth electrode contact (55) matching the third electrode contact (54) being arranged in the first connecting box (13), a second connecting spring (56) being fixedly arranged on the side wall of the fourth electrode contact (55), a free end of the second connecting spring (56) being fixedly connected to the inner side wall of the first connecting box (13), the first side wall and the second side wall being arranged opposite to each other.

7. The smoke exhaust device based on fire fighting equipment according to claim 5, characterized in that: The invention also comprises a blocking mechanism (6), the blocking mechanism (6) comprising a through hole (61) formed on a side plate of the second connecting box (31), a transmission belt (62) being movably arranged in the through hole (61), one end of the transmission belt (62) being transmission-connected to a first transmission wheel (63), the first transmission wheel (63) being fixedly sleeved outside a second rotating rod (64), the second rotating rod (64) being rotatably arranged on the fourth air guide pipe (32), the lower end of the second rotating rod (64) extending into the exhaust pipe (33), and two connecting components (65) being arranged on the second rotating rod (64), the connecting components (65) being matched with each other. There is a blocking plate (66), the two blocking plates (66) are respectively matched with the smoke extraction window (34) and the ventilation and pressurization window (35), the other end of the transmission belt (62) is connected to the second transmission wheel (67), the second transmission wheel (67) is fixedly sleeved outside the third rotating rod (68), the third rotating rod (68) is rotatably set on the inner bottom wall of the second connecting box (31), the third rotating rod (68) is fixedly sleeved outside the driving gear (69), the driving gear (69) and the second spur rack (610) are meshed with each other, and the second spur rack (610) is fixedly set on the side wall of the partition plate (41).

8. The smoke exhaust device based on fire fighting equipment according to claim 7, characterized in that: The connecting assembly (65) comprises a spiral rod (651) fixedly sleeved on the outside of the second rotating rod (64); the spiral rod (651) is threadedly inserted into an internally threaded tube (652); the internally threaded tube (652) is fixedly inserted into a moving block (653); a connecting block (654) is fixedly connected to a side wall of the moving block (653); a free end of the connecting block (654) is fixedly connected to a blocking plate (66); one end of a second guide assembly (655) is fixedly provided on an upper end surface of the moving block (653); and the other end of the second guide assembly (655) is fixedly connected to a stop block (656). ), the limit block (656) is fixedly arranged on the inner side wall of the exhaust pipe (33), the second guide assembly (655) comprises a second guide rod (6551), a second guide cylinder (6552) and a second guide spring (6553), the second guide rod (6551) is movably inserted in the second guide cylinder (6552), the second guide spring (6553) is wound around the outside of the second guide rod (6551), and the two ends of the second guide spring (6553) are respectively fixedly connected to the side wall of the second guide rod (6551) and the outer side wall of the second guide cylinder (6552).

9. The smoke exhaust device based on fire fighting equipment according to claim 7, characterized in that: The invention also comprises a sealing assembly (8), wherein the sealing assembly (8) comprises a sealing plug (81) movably inserted into the through hole (61), a movable hole (83) being provided on the sealing plug (81), the transmission belt (62) being movably inserted into the movable hole (83), an extension edge (82) being fixedly provided on the sealing plug (81), a limiting ball (84) being fixedly provided on the side wall of the extension edge (82), the limiting ball (84) being movably provided in a limiting groove (85), the limiting groove (85) being provided on the second connecting box (31), and the limiting ball (84) being made of an elastic material.

10. The smoke exhaust device based on fire fighting equipment according to claim 7, characterized in that: The invention also comprises a swing mechanism (9), the swing mechanism (9) comprising a swing hole (91) provided on the exhaust pipe (33), the ventilation and pressurizing window (35) being movably arranged in the swing hole (91), a connecting plate (92) being fixedly connected to the side wall of the ventilation and pressurizing window (35), a free end of the connecting plate (92) being fixedly connected to a swing plate (93), the swing plate (93) being fixedly arranged on a fourth rotating rod (94), the fourth rotating rod (94) being rotatably arranged on a support tube (96), the support tube (96) being fixedly arranged on the inner side wall of the exhaust pipe (33), the swing A blocking plate (95) is disposed on the side wall of the movable plate (93), the blocking plate (95) being fixedly disposed on the inner side wall of the support tube (96), two blocking plates (95) being provided, a ventilation hole being provided between the two blocking plates (95), two swinging plates (93) being provided, the two swinging plates (93) and the fourth rotating rod (94) forming a blocking structure for blocking the ventilation hole, a return spring (97) being fixedly connected to the side wall of the swinging plate (93), the free end of the return spring (97) being fixedly connected to the inner side wall of the support tube (96).

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