Smoke exhaust device for fire engineering

Abstract

The utility model discloses a smoke exhaust device for fire protection engineering, which comprises a smoke inlet pipe, a precipitation elbow pipe and a smoke exhaust pipe, the precipitation elbow pipe comprises a bottom pipeline as a precipitation area and a first vertical pipe and a second vertical pipe which are respectively connected with two ends of the bottom pipeline, the smoke inlet pipe is communicated with the first vertical pipe, and the smoke exhaust pipe is communicated with the second vertical pipe; a spray header is arranged in the smoke inlet pipe and communicated with the water storage tank through a water pump, a first filter screen is arranged in the bottom pipeline, the bottom pipeline is communicated with the water storage tank through a siphon, a filter layer is connected to the joint of the bottom pipeline and the connecting pipe, the bottom pipeline is filled with water, and the water storage tank is located below the bottom pipeline; the pipe diameter of the siphon is smaller than that of the precipitation bent pipe. According to the flue gas purification device, the spray header is arranged to spray flue gas, the precipitation elbow is matched to purify the flue gas, finally, impurity particles contained in the flue gas exhausted through the flue gas exhaust pipe are small, the purification effect is good, and pollution to the environment is little.

Description

Technical Field

[0001] The utility model relates to the technical field of subway construction, in particular to a smoke exhaust device for fire protection engineering. Background Art

[0002] In residential buildings or commercial buildings, fire protection is a crucial link. According to fire statistics, smoke is the main cause of death in building fires. Especially in large shopping malls or office buildings, due to poor ventilation, the proportion of people who die from smoke inhalation is relatively large, up to 80%. Among the people who are burned to death, most are first poisoned by inhaling smoke and fainted and then burned to death. Among the people who die in fires, most die due to asphyxiation caused by thick smoke inhalation. According to fire protection regulations, public transportation waiting areas such as subways, airports, and railway stations, as well as large shopping malls, cinemas, and indoor entertainment venues, should be equipped with fire smoke exhaust devices.

[0003] For example, a fire protection engineering automatic smoke exhaust device disclosed in the patent application No. CN202020120181.2 includes an air duct, and a plurality of air inlet pipes and connecting pipes are arranged on the air duct. The connecting pipe is connected to an external fan to discharge indoor smoke to the outside; a cleaning mechanism for cleaning the soot on the inner wall of the air duct is arranged in the air duct; this fire protection engineering automatic smoke exhaust device can automatically clean the residual soot in the air duct.

[0004] However, the existing ones generally use the method of water washing to clean the inner wall of the air duct, and the water is directly discharged to the outside, resulting in low water utilization rate, and at the same time, the lack of centralized collection of water leads to waste. Content of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a smoke exhaust device for fire protection engineering, which can purify the smoke before discharging it, and at the same time can recycle the purified water.

[0006] The smoke exhaust device for fire protection engineering according to the first aspect embodiment of the utility model includes a smoke inlet pipe, a sedimentation elbow pipe, and a smoke exhaust pipe. The sedimentation elbow pipe includes a bottom pipe as a sedimentation area and a first vertical pipe and a second vertical pipe respectively connected to both ends of the bottom pipe. The smoke inlet pipe is communicated with the first vertical pipe, and the smoke exhaust pipe is communicated with the second vertical pipe;

[0007] A spray head is arranged in the smoke inlet pipe, the spray head is communicated with a water storage tank through a water pump, a first filter screen is arranged in the bottom pipe, the bottom pipe is communicated with the water storage tank through a siphon pipe, a filter layer is connected to the connection part of the bottom pipe and the siphon pipe, water is filled in the bottom pipe, the water storage tank is located below the bottom pipe, and the diameter of the siphon pipe is smaller than the diameter of the sedimentation elbow pipe.

[0008] The smoke exhaust device for fire protection engineering according to the embodiments of the present utility model has at least the following beneficial effects: By arranging a spray head to spray the flue gas, when the sprayed flue gas passes through the sedimentation elbow, most of the particulate matter contained in the flue gas is first filtered by the filter screen, and then the flue gas impacts the water surface to cause pressure, thereby changing the water level. Part of the water flows into the water storage tank through the highest point of the siphon pipe, and the water level in the bottom pipe drops, so that the flue gas filtered by large particle impurities can directly pass through. Then, during the climbing process of the flue gas, the particulate impurities therein will settle to the bottom pipe due to their own weight and settle under the water. Finally, the flue gas discharged through the smoke exhaust pipe contains smaller impurity particles, with good purification effect, less environmental pollution, and at the same time, the inner wall of the pipe can also be sprayed and washed during the spraying process to ensure the cleanliness of the inside of the pipe.

[0009] According to some embodiments of the present utility model, a smoke sensor is arranged in the smoke inlet pipe, and the smoke sensor is arranged upstream of the spray head and communicated with the water pump.

[0010] According to some embodiments of the present utility model, the first filter screen is arranged on one side close to the first vertical pipe.

[0011] According to some embodiments of the present utility model, a notch is formed on one side of the bottom pipe close to the first vertical pipe, the first filter screen is inserted into the notch and installed in the bottom pipe, and a handle is connected to the side edge of the first filter screen outside the bottom pipe.

[0012] According to some embodiments of the present utility model, a sealing ring is connected to the periphery of the notch, a sealing rubber strip is connected to the circumference of the first filter screen, and the first filter screen is hermetically 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 multiple sedimentation elbows, and the sedimentation elbows are connected in sequence. The sedimentation elbow at the head end is communicated with the smoke inlet pipe, and the sedimentation elbow at the tail end is communicated with the smoke exhaust pipe.

[0015] According to some embodiments of the present utility model, the first filter screen and the siphon pipe are provided in a matching number and corresponding settings.

[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 screen is connected to the air outlet of the smoke exhaust pipe.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Brief Description of the Drawings

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments, where:

[0020] Figure 1 is a schematic structural diagram of a smoke exhaust device for a fire protection project according to an embodiment of the present utility model.

[0021] Figure 2 is Figure 1 an enlarged schematic structural diagram of part A in

[0022] Figure 3 is a schematic structural diagram of a smoke exhaust device for a fire protection project according to another embodiment of the present utility model.

[0023] 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 storage tank; 440, siphon tube; 450, filter layer; 500, first filter screen; 510, grip; 520, sealing rubber strip; 600, connecting elbow; 700, fan; 800, second filter screen. Detailed Description of the Embodiments

[0024] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0025] In the description of the present utility model, it should be understood that with regard to the orientation description, such as the upper, lower, front, rear, left, right, etc. indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0026] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or the sequence relationship of the indicated technical features.

[0027] In the description of the present utility model, unless otherwise clearly defined, terms such as "setting", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0028] Reference Figure 1 and Figure 2 As shown, the smoke exhaust device for a fire protection project according to an embodiment of the present utility model includes a smoke inlet pipe 100, a sedimentation elbow pipe, and a smoke exhaust pipe 300. The sedimentation elbow pipe includes a bottom pipe 210 as a sedimentation area, and a first vertical pipe 220 and a second vertical pipe 230 respectively connected to both ends of the bottom pipe 210. The smoke inlet pipe 100 is communicated with the first vertical pipe 220, and the smoke exhaust pipe 300 is communicated with the second vertical pipe 230. A spray head 410 is arranged in the smoke inlet pipe 100. The spray head 410 is communicated with a water storage tank 430 through a water pump 420. A first filter screen 500 is arranged in the bottom pipe 210. The bottom pipe 210 is communicated with the water storage tank 430 through a siphon pipe 440. A filter layer 450 is connected at the connection between the bottom pipe 210 and the siphon pipe 440. The bottom pipe 210 is filled with water. The water storage tank 430 is located below the bottom pipe 210. The diameter of the siphon pipe 440 is smaller than the diameter of the sedimentation elbow pipe.

[0029] During actual use, the spray head 410 is provided to spray the flue gas. When the sprayed flue gas passes through the sedimentation elbow pipe, most of the particulate matter contained in the flue gas is first filtered by the filter screen. Then, the flue gas impacts the water surface to cause pressure, resulting in a change in the water level. Part of the water flows into the water storage tank 430 through the highest point of the siphon pipe 440. The water level in the bottom pipe 210 drops, so that the flue gas filtered by large particle impurities can directly pass through. Then, during the climbing process of the flue gas, the particulate impurities therein will settle to the bottom of the bottom pipe 210 and settle under the water due to their own weight. Finally, the flue gas discharged through the smoke exhaust pipe 300 contains smaller impurity particles, with good purification effect, less environmental pollution, and at the same time, the inner wall of the pipe can also be sprayed and washed during the spraying process to ensure the cleanliness of the inside of the pipe.

[0030] In some specific embodiments of the present utility model, it may further have the following additional technical features: a smoke sensor is arranged in the smoke inlet pipe 100. The smoke sensor is arranged upstream of the spray head 410 and is communicated with the water pump 420.

[0031] It should be noted that the spray head 410, the smoke sensor, and the water pump 420 are all common technical solutions in the prior art. Their corresponding models can be obtained by referring to reference books according to actual required parameters and purchased on the market. Their specific structures and principles will not be elaborated here.

[0032] Meanwhile, to ensure the cleanliness inside the pipeline, the water pump 420 can also be periodically turned on, so that the spray head 410 sprays water to clean the inner wall of the pipeline.

[0033] In some specific embodiments of the present invention, it may further have the following additional technical features: The first filter screen 500 is arranged on one side close to the first vertical pipe 220. Through this design, the flue gas after spraying is first filtered by the first filter screen 500.

[0034] In some specific embodiments of the present invention, it may further have the following additional technical features: A notch 211 is opened on one side of the bottom pipe 210 close to the first vertical pipe 220. The first filter screen 500 is inserted into the notch 211 and installed in the bottom pipe 210. A handle 510 is connected to the side edge of the first filter screen 500 outside the bottom pipe 210. Through this design, the first filter screen 500 can be regularly removed for cleaning and then reinstalled after cleaning.

[0035] In some specific embodiments of the present invention, it may further have the following additional technical features: A sealing ring 212 is connected to the periphery of the notch 211, and sealing rubber strips 520 are connected to the circumference of the first filter screen 500. The first filter screen 500 is hermetically connected to the notch 211. Through this design, it can be ensured that the flue gas does not leak from the gap between the notch 211 and the first filter screen 500.

[0036] In some specific embodiments of the present invention, it may further have the following additional technical features: The filter layer 450 is a filter element. Through this design, the water in the bottom pipe 210 containing particulate impurities can be filtered before entering the water storage tank 430, thereby avoiding the situation that the spray head 410 is blocked and cannot work properly when the water with particulate impurities is supplied to the spray head 410 during this circulation process.

[0037] Reference Figure 3 As shown, in some specific embodiments of the present invention, it may further have the following additional technical features: There are multiple sedimentation elbows, and the sedimentation elbows are connected in sequence. The sedimentation elbow at the head end is communicated with the smoke inlet pipe 100, and the sedimentation elbow at the tail end is communicated with the smoke exhaust pipe 300. Specifically, each sedimentation elbow is connected by a connecting elbow 600. The connecting elbow 600 is of an inverted U-shaped structure, and the sedimentation elbow is of a regular U-shaped structure. The inverted U-shaped connecting elbow 600 can make the flue gas impact the inner wall of the pipeline at the bend, so that the pipeline vibrates to shake off the smoke particles that have not been completely condensed on the inner wall of the pipeline into the bottom pipe 210, thereby reducing the number of times the inner wall of the pipeline needs to be cleaned.

[0038] In some specific embodiments of the present invention, it may further have the following additional technical features: The first filter screen 500 and the siphon pipe 440 are both provided in a matching number and corresponding settings.

[0039] Through the above design, the purification effect can be improved by multiple filtrations.

[0040] In some specific embodiments of the present utility model, it may further have the following additional technical features: A fan 700 is connected in the exhaust pipe 300. The fan 700 is used to increase the gas flow rate in the whole pipeline. At the same time, since the flue gas is purified first, the purified flue gas will not adhere to the fan blades of the fan 700, resulting in a decrease in the service life of the fan 700. The overall design is reasonable.

[0041] In some specific embodiments of the present utility model, it may further have the following additional technical features: A second filter screen 800 is connected to the air outlet of the exhaust pipe 300. By designing the second filter screen 800, it can prevent excessive external dust from entering the exhaust pipe 300, and at the same time, it can also prevent the dust entering the exhaust pipe 300 from accumulating on the fan 700 and affecting the exhaust efficiency.

[0042] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art to which the present utility model pertains, various changes can be made without departing from the gist of the present utility model.

Claims

1. A smoke exhaust device for a fire protection project, characterized in that, It includes a smoke inlet pipe (100), a sedimentation elbow pipe, and a smoke exhaust pipe (300). The sedimentation elbow pipe includes a bottom pipe (210) serving as a sedimentation area, a first vertical pipe (220), and a second vertical pipe (230) respectively connected to both ends of the bottom pipe (210). The smoke inlet pipe (100) communicates with the first vertical pipe (220), and the smoke exhaust pipe (300) communicates with the second vertical pipe (230). A spray head (410) is arranged in the smoke inlet pipe (100). The spray head (410) communicates with a water storage tank (430) through a water pump (420). A first filter screen (500) is arranged in the bottom pipe (210). The bottom pipe (210) communicates with the water storage tank (430) through a siphon pipe (440). A filter layer (450) is connected at the connection between the bottom pipe (210) and the siphon pipe (440). The bottom pipe (210) is filled with water. The water storage tank (430) is located below the bottom pipe (210). The diameter of the siphon pipe (440) is smaller than the diameter of the sedimentation elbow pipe.

2. The smoke exhaust device for fire protection engineering according to claim 1, characterized in that, A smoke sensor is arranged in the smoke inlet pipe (100). The smoke sensor is arranged upstream of the spray head (410) and communicates with the water pump (420).

3. The smoke exhaust device for fire protection engineering according to claim 1, characterized in that, The first filter screen (500) is arranged on the side close to the first vertical pipe (220).

4. The smoke exhaust device for fire protection engineering according to claim 3, characterized in that, A notch (211) is formed on the side of the bottom pipe (210) close to the first vertical pipe (220). The first filter screen (500) is inserted into the notch (211) and installed in the bottom pipe (210). A handle (510) is connected to the side edge of the first filter screen (500) outside the bottom pipe (210).

5. The smoke exhaust device for fire protection engineering according to claim 4, characterized in that, A sealing ring (212) is connected to the periphery of the notch (211). Sealing rubber strips (520) are connected to the circumference of the first filter screen (500). The first filter screen (500) is hermetically connected to the notch (211).

6. The smoke exhaust device for fire protection engineering according to claim 1, characterized in that, The filter layer (450) is a filter element.

7. The smoke exhaust device for fire protection engineering according to claim 1, wherein, There are multiple sedimentation elbow pipes, and the sedimentation elbow pipes are connected in sequence. The sedimentation elbow pipe at the head end communicates with the smoke inlet pipe (100), and the sedimentation elbow pipe at the tail end communicates with the smoke exhaust pipe (300).

8. The smoke exhaust device for fire protection engineering according to claim 7, characterized in that, The first filter screen (500) and the siphon pipe (440) are both provided in corresponding quantities and are correspondingly arranged.

9. The smoke exhaust device for fire protection engineering according to claim 1, characterized in that, A fan (700) is connected in the smoke exhaust pipe (300).

10. The smoke exhaust device for fire protection engineering according to claim 9, characterized in that, A second filter screen (800) is connected to the air outlet of the smoke exhaust pipe (300).

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