Smoke extraction device for fire protection technology

Abstract

Smoke extraction device for fire protection technology, characterized in that comprising: a smoke inlet pipe (100), a settling bend pipe and a smoke extraction pipe (300), wherein the settling bend pipe comprises a bottom pipe (210) as a settling area as well as a first vertical pipe (220) and a second vertical pipe (230), each of which is connected to the two ends of the bottom pipe (210), wherein the smoke inlet pipe (100) is connected to the first vertical pipe (220) and the smoke extraction pipe (300) is connected to the second vertical pipe (230);wherein a sprinkler head (410) is arranged in the smoke inlet pipe (100) and is connected to a water tank (430) via a water pump (420), wherein a first filter (500) is arranged in the bottom pipe (210), wherein the bottom pipe (210) is connected to the water tank (430) via a siphon pipe (440), wherein a filter layer (450) is attached at the connection point between the bottom pipe (210) and the siphon pipe (440), wherein the bottom pipe (210) is filled with water, wherein the water tank (430) is located below the bottom pipe (210) and the pipe diameter of the siphon pipe (440) is smaller than that of the settling bend pipe.

Description

Technical area

[0001] The utility model relates to the technical field of subway construction, in particular a smoke extraction device for fire protection technology. State of the art

[0002] Fire safety is a crucial factor in residential or commercial buildings. According to fire statistics, smoke particles are the main cause of deaths in building fires. Especially in large shopping malls or office buildings where ventilation is poor, the proportion of people who die from smoke inhalation is high and can reach as high as 80%. Of those who die in fires, most are previously unconscious from inhaling smoke particles and then burned to death. Among the increasing number of fire victims, most die from suffocation caused by thick smoke. According to fire safety regulations, smoke extraction devices must be provided in the waiting areas of public transport such as the subway, airport, train station, as well as in large shopping malls, cinemas, and indoor recreational facilities.

[0003] As disclosed in application CN202020120181.2, an automatic smoke extraction device for fire protection engineering comprises an air duct, the air duct being equipped with a plurality of supply air ducts and connecting ducts. The connecting ducts are connected to an external fan to exhaust the smoke gas from the interior to the outside. A cleaning device is provided in the air duct to clean the inner wall of the air duct of smoke particles. The automatic smoke extraction device for fire protection engineering can automatically clean the smoke particles remaining in the air duct.

[0004] However, the existing devices generally clean the inner wall of the air duct by washing with water, and the water is directly discharged to the outside, which leads to low water utilization and at the same time there is no centralized collection of water, which leads to waste. Contents of this utility model

[0005] The present utility model aims to solve at least one of the technical problems of the existing technology. To this end, the present utility model proposes a smoke extraction device for fire protection engineering that is capable of first purifying and then discharging the smoke gas, allowing the purified water to be reused.

[0006] According to an embodiment of the smoke extraction device for fire protection technology according to a first aspect of the present utility model, the smoke extraction device comprises a smoke inlet pipe, a settling bend pipe and a smoke exhaust pipe, wherein the settling bend pipe comprises a bottom pipe as a settling region and a first vertical pipe and a second vertical pipe, which are respectively connected to the two ends of the bottom pipe, wherein the smoke inlet pipe is connected to the first vertical pipe and the smoke exhaust pipe is connected to the second vertical pipe;

[0007] A sprinkler head is arranged in the smoke inlet pipe, the sprinkler head is connected to the water tank via a water pump, wherein a first filter is arranged in the bottom pipe, wherein the bottom pipe is connected to the water tank via a siphon pipe, wherein a filter layer is attached to the connection point between the bottom pipe and the siphon pipe, wherein the bottom pipe is filled with water, wherein the water tank is located below the bottom pipe and the pipe diameter of the siphon pipe is smaller than that of the settling bend pipe.

[0008] According to the smoke exhaust device for fire protection engineering according to the embodiment of the utility model, the smoke exhaust device has at least the following advantageous effects: By installing a sprinkler head, the smoke gas is sprayed. When the sprayed smoke gas passes through the settling bend pipe, a large part of the particles contained in the smoke gas is filtered through the filter. Then, when the smoke gas hits the water surface, pressure is exerted, causing the water level to change. Part of the water flows through the highest point of the siphon pipe into the water tank. The water level in the bottom pipe decreases, allowing the smoke gas, which has been purified of large particles, to pass directly through. During the ascent of the smoke gas, the particles settle in the bottom pipe due to their own weight and sink underwater. Finally, the smoke gas discharged through the smoke exhaust pipe contains fewer particles, and the purification effect is good.Environmental pollution is low, and during the spraying process, the inner wall of the pipe can also be sprayed and cleaned to ensure the cleanliness of the pipe interior.

[0009] According to some embodiments of the utility model, a smoke detector is arranged in the smoke inlet pipe, wherein the smoke detector is arranged upstream of the sprinkler head and is connected to the water pump.

[0010] According to some embodiments of the utility model, the first filter is arranged on a side near the first vertical tube.

[0011] According to some embodiments of the utility model, a notch is provided on a side of the soil pipe near the first vertical pipe, the first filter is inserted into the notch and arranged in the soil pipe, wherein a handle is attached to the side of the first filter which is located outside the soil pipe.

[0012] According to some embodiments of the present utility model, a sealing ring is attached to the periphery of the notch, and a sealing strip is attached to the periphery of the first filter, wherein the first filter is tightly connected to the notch.

[0013] According to some embodiments of the present utility model, the filter layer is a filter element.

[0014] According to some embodiments of the present utility model, there are a plurality of settling bend pipes connected one after the other, the settling bend pipe located at the beginning being connected to the smoke inlet pipe and the settling bend pipe located at the end being connected to the smoke outlet pipe.

[0015] According to some embodiments of the present utility model, the first filter and the siphon tube are arranged in appropriate numbers and in a manner that matches one another.

[0016] According to some embodiments of the present utility model, a fan is connected in the smoke exhaust pipe.

[0017] According to some embodiments of the present utility model, a second filter is connected to the outlet of the smoke exhaust pipe.

[0018] Additional aspects and advantages of the present utility model are partly indicated in the following description, partly they are obvious from the following description or recognized through the practice of the present utility model. Brief description of the characters

[0019] In the following, the present utility model is further explained in conjunction with the drawings and embodiments, where: Fig. 1 is a schematic diagram of the structure of the smoke exhaust device for fire protection engineering according to an embodiment of the present utility model. Fig. Figure 2 is an enlarged schematic representation of part A in Fig. 1. Fig. 3 is an enlarged schematic diagram of the smoke exhaust device for fire protection engineering according to another embodiment of this utility model. List of reference symbols

[0020] 100, Smoke inlet pipe; 210, Bottom pipe; 211, Notch; 212, Sealing ring; 220, First vertical pipe; 230, Second vertical pipe; 300, Smoke exhaust pipe; 410, Sprinkler head; 420, Water pump; 430, Water tank; 440, Siphon pipe; 450, Filter layer; 500, First filter; 510, Handle; 520, Sealing strip; 600, Connecting elbow pipe; 700, Fan; 800, Second filter. Detailed embodiments

[0021] The embodiments of this utility model are described in detail below. Examples of the embodiments are illustrated in the accompanying drawings, where identical or similar reference numerals designate identical or similar elements or elements with identical or similar functions. The exemplary embodiments described below with reference to the accompanying drawings are exemplary and serve only to explain the utility model and should not be understood as limiting the utility model.

[0022] In the description of this utility model, it is to be understood that the positional descriptions such as top, bottom, front, back, left, right, etc., refer to the positional or positional relationships shown in the attached drawings. These serve solely to describe the utility model and simplify the description and are not intended to indicate or imply that the mentioned devices or elements have a specific position or must be constructed and operated in a specific position. Therefore, they should not be understood as a limitation of the utility model.

[0023] In the description of this utility model, 'some' means one or more, 'several' means two or more, 'greater than', 'less than', 'over', etc., are to be understood as not including number, while 'over', 'under', 'within', etc., are to be understood as including number. References to the first and second in the description serve only to distinguish the technical features and should not be understood as indicating or implying relative importance or as implying the number or order of the specified technical features.

[0024] In the description of this utility model, unless clearly defined otherwise, terms such as setting up, installing, connecting, etc., should be understood in the broadest sense. Those skilled in the relevant technical field can refer to the specific content of the technical plan to reasonably determine the specific meaning of the above terms in this utility model.

[0025] With reference to the provisions of the Fig. 1 and Fig. The exemplary embodiments of the smoke extraction device for fire protection technology shown in Figure 2 comprise a smoke inlet pipe 100, a settling bend pipe, and a smoke extraction pipe 300. The settling bend pipe comprises a base pipe 210 as a settling area, as well as a first vertical pipe 220 and a second vertical pipe 230, each of which is connected to the two ends of the base pipe 210. The smoke inlet pipe 100 is connected to the first vertical pipe 220, and the smoke extraction pipe 300 is connected to the second vertical pipe 230. A sprinkler head 410 is arranged in the smoke inlet pipe 100, and the sprinkler head 410 is connected to a water tank 430 via a water pump 420. A first filter 500 is arranged in the base pipe 210. The base pipe 210 is connected to the water tank 430 via a siphon pipe 440. A filter layer 450 is attached to the connection point between the base pipe 210 and the siphon pipe 440.The bottom pipe 210 is filled with water, the water tank 430 is located below the bottom pipe 210, and the pipe diameter of the siphon pipe 440 is smaller than that of the settling bend pipe.

[0026] In practical use, the smoke is sprayed through the sprinkler head 410. After the sprayed smoke passes through the settling bend pipe, it is filtered through the filter, which removes most of the particles contained in the smoke. The smoke hits the water surface and creates pressure, causing the water level to change. Part of the water flows through the highest point of the siphon pipe 440 into the water tank 430, causing the water level in the bottom pipe 210 to drop, allowing the filtered smoke containing large particles to flow directly through. As the smoke rises, the particles settle to the bottom of the bottom pipe 210 due to their own weight and sink underwater. Finally, the smoke discharged through the smoke exhaust pipe 300 contains only small particles, resulting in a good purification effect and less pollution to the environment.At the same time, the inner wall of the pipe can also be sprayed and cleaned during the spraying process to ensure the cleanliness of the pipe interior.

[0027] In some specific embodiments of this utility model, it may also have the following additional technical features: A smoke detector is arranged in the smoke inlet pipe 100, the smoke detector is arranged upstream of the sprinkler head 410 and connected to the water pump 420.

[0028] It should be noted that the sprinkler head 410, the smoke detector and the water pump 420 are all used in the common technical solutions of existing technology and the corresponding models can be found in reference books and purchased on the market according to actual needs, their specific structure and principles will not be further explained here.

[0029] To ensure cleanliness inside the pipeline, the water pump 420 can also be switched on periodically so that the sprinkler head 410 sprays water to clean the inner wall of the pipeline.

[0030] In some specific embodiments of this utility model, it may also include the following additional technical features: The first filter 500 is arranged on one side near the first vertical pipe 220. This design allows the flue gas generated downstream of the sprinkler to be first filtered by the first filter 500.

[0031] In some specific embodiments of this utility model, it may also include the following additional technical features: On one side of the bottom tube 210 near the first vertical tube 220, a notch 211 is provided, into which the first filter 500 is inserted and arranged in the bottom tube 210. A handle 510 is attached to the side of the first filter 500 located outside the bottom tube 210. This design allows the first filter 500 to be periodically removed for cleaning and replaced after cleaning.

[0032] In some specific embodiments of this utility model, it may also include the following additional technical features: a sealing ring 212 is attached to the periphery of the notch 211, and a sealing strip 520 is attached to the periphery of the first filter 500, with the first filter 500 being tightly connected to the notch 211. This design can ensure that flue gas does not escape through the gap between the notch 211 and the first filter 500.

[0033] In some specific embodiments of this utility model, it may also include the following additional technical features: The filter layer 450 is a filter element. This design allows the water in the soil pipe 210 containing particulate contaminants to be filtered before it enters the water tank 430. This prevents water containing particulate contaminants from entering and clogging the sprinkler head 410 during this cycle, which could lead to failure of the sprinkler head 410.

[0034] As in Fig.3, this utility model may, in some specific embodiments, have the following additional technical features: There are a plurality of settling bend pipes, each connected in sequence. The settling bend pipe located at the beginning is connected to the smoke inlet pipe 100, and the settling bend pipe located at the end is connected to the smoke exhaust pipe 300. In particular, the individual settling bend pipes are each connected by connecting bend pipes 600, wherein the connecting bend pipe 600 has an inverted U-shape and the settling bend pipe has a normal U-shape. The inverted U-shaped connecting bend pipe 600 allows the flue gas to hit the inner wall of the pipe at the bend, causing the pipe to vibrate, and the smoke particles that have not completely condensed on the inner wall of the pipe to fall into the bottom pipe 210, thereby reducing the frequency of cleaning the pipe's inner wall.

[0035] In some specific embodiments of the present utility model, it may also have the following additional technical features: The first filter 500 and the siphon tube 440 are each arranged in an appropriate number and accordingly.

[0036] The design described above allows the cleaning effect to be improved through multiple filtration.

[0037] In some specific embodiments of this utility model, it may also include the following additional technical features: A fan 700 is connected to the flue duct 300. The fan 700 increases the gas flow velocity throughout the duct, and since the flue gas is first purified, the purified flue gas does not adhere to the fan blades of the fan 700, which would reduce the service life of the fan 700. The overall design is reasonable.

[0038] In some specific embodiments of this utility model, it may also include the following additional technical features: A second filter 800 is connected to the outlet of the smoke exhaust pipe 300. The design of the second filter 800 prevents excessive dust from outside from entering the smoke exhaust pipe 300. At the same time, the dust entering the smoke exhaust pipe 300 is also prevented from accumulating on the fan 700 and impairing the smoke extraction efficiency.

[0039] A detailed example of this utility model has been described above in conjunction with the accompanying drawings. However, this utility model is not limited to the above-mentioned example. Various modifications may be made within the scope of knowledge of a person skilled in the relevant technical field without departing from the spirit of this utility model. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 202020120181.2

[0003]

Claims

[1] Smoke extraction device for fire protection technology, characterized bythat comprises: a smoke inlet pipe (100), a settling bend pipe and a smoke exhaust pipe (300), wherein the settling bend pipe comprises a bottom pipe (210) as a settling region and a first vertical pipe (220) and a second vertical pipe (230), which are each connected to the two ends of the bottom pipe (210), wherein the smoke inlet pipe (100) is connected to the first vertical pipe (220) and the smoke exhaust pipe (300) is connected to the second vertical pipe (230);wherein a sprinkler head (410) is arranged in the smoke inlet pipe (100), which is connected to a water tank (430) via a water pump (420), wherein a first filter (500) is arranged in the base pipe (210), wherein the base pipe (210) is connected to the water tank (430) via a siphon pipe (440), wherein a filter layer (450) is attached to the connection point between the base pipe (210) and the siphon pipe (440), wherein the base pipe (210) is filled with water, wherein the water tank (430) is located below the base pipe (210) and the pipe diameter of the siphon pipe (440) is smaller than that of the settling bend pipe; [2] Smoke extraction device for fire protection technology according to claim 1, characterized by that a smoke detector is arranged in the smoke inlet pipe (100), wherein the smoke detector is arranged upstream of the sprinkler head (410) and is connected to the water pump (420). [3] Smoke extraction device for fire protection technology according to claim 1, characterized by that the first filter (500) is arranged on a side near the first vertical tube (220). [4] Smoke extraction device for fire protection technology according to claim 3, characterized by that a notch (211) is provided on one side of the base tube (210) near the first vertical tube (220), wherein the first filter (500) is inserted into the notch (211) and arranged in the base tube (210), and a handle (510) is attached to the side of the first filter (500) which is located outside the base tube (210). [5] Smoke extraction device for fire protection technology according to claim 4, characterized by that a sealing ring (212) is attached to the periphery of the notch (211), and a sealing strip (520) is attached to the circumference of the first filter (500), wherein the first filter (500) is tightly connected to the notch (211). [6] Smoke extraction device for fire protection technology according to claim 1, characterized bythat the filter layer (450) is a filter element. [7] Smoke extraction device for fire protection technology according to claim 1, characterized by that there are several settling bend pipes which are connected one after the other, the first settling bend pipe being connected to the smoke inlet pipe (100) and the last settling bend pipe being connected to the smoke outlet pipe (300). [8] Smoke extraction device for fire protection technology according to claim 7, characterized by that the first filter (500) and the siphon tube (440) are arranged in the appropriate number and accordingly. [9] Smoke extraction device for fire protection technology according to claim 1, characterized by that a fan (700) is connected in the smoke exhaust pipe (300). [10] Smoke extraction device for fire protection technology according to claim 9, characterized by that a second filter (800) is connected to the outlet of the smoke exhaust pipe (300).

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