A smoke exhaust device for fire resistance test

Abstract

The utility model relates to the technical field of set exhaust fume device, and disclose a set exhaust fume device for fire resistance test, including smoke pipe, the bottom fixed connection of smoke pipe has the exhaust fume hood, the shape of exhaust fume hood is inverted " funnel " shape structure, the inside of smoke pipe is provided with recess, the inner wall of recess is provided with exhaust component. The utility model discloses through exhaust fan starting, its work can make the inside of recess have a powerful upward suction force, and the suction force is adsorbed to exhaust fume hood through dispersion pipeline, because the number of dispersion pipeline is several, and then make the suction force more evenly distributed in the inside of exhaust fume hood, and the inner wall of net cylinder is equipped with activated carbon, and activated carbon can slow down the suction force, make the suction force in the inside of exhaust fume hood more moderate, and then when adsorbing exhaust fume, will not bring the influence to material combustion, and then improved the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of smoke collection and exhaust devices, specifically a smoke collection and exhaust device for fire resistance testing. Background Technology

[0002] A smoke collection and exhaust system is a device used to collect and exhaust oil fumes. It mainly consists of four parts: an oil collection box, an exhaust pipe, an oil collection cup, and an oil guide ring. Its main function is to effectively exhaust the oil fumes generated in the kitchen to the outside, ensuring the cleanliness and safety of the kitchen air. A smoke collection and exhaust system used for fire resistance testing is a device specifically designed to collect and exhaust fumes during fire resistance testing. This device can effectively collect the fumes that overflow during fire resistance testing, reducing environmental pollution. It has the advantages of simple structure, convenient assembly, flexible operation, and strong versatility. Since fire resistance test specimens are generally no less than 4 meters in length, there is currently no smoke collection and exhaust system specifically designed for fire resistance testing of such large components. Therefore, units that can conduct fire resistance limit tests on fire-retardant coatings for large specimens basically use a direct exhaust method, that is, the fumes overflowing from the upper surface of the specimen are not effectively collected and treated, which will cause significant pollution to the surrounding environment.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN212008469U discloses a smoke collection and exhaust device for fire resistance testing. During the fire resistance test, a smoke collection cavity is formed on the upper surface of the sample. When the exhaust fan is activated, a negative pressure is created inside the smoke collection hood, effectively collecting the smoke overflowing from the upper surface of the sample. The collected smoke is then discharged through the exhaust pipe and exhaust fan into an externally connected smoke purification device, and is discharged after purification to meet standards, thus reducing environmental pollution.

[0004] While the comparative patent solves the problem of ineffective collection and treatment of flue gas overflowing from the upper surface of the sample, which would cause significant pollution to the surrounding environment, the device directly exhausts the flue gas through an exhaust fan. Consequently, there is a strong adsorption force above the building materials. When the adsorption force is small, the smoke extraction effect is poor; when the adsorption force is large, it can easily affect the combustion state of the building materials, thereby reducing the practicality of the device.

[0005] Regarding the aforementioned technologies, the device directly exhausts the smoke through a smoke exhaust fan, resulting in a strong adsorption force above the building materials. When the adsorption force is small, the smoke extraction effect is poor; when the adsorption force is large, it can easily affect the combustion state of the building materials, thereby reducing the practicality of the device. Utility Model Content

[0006] Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a smoke collection and exhaust device for fire resistance testing. This device has advantages such as not affecting the combustion of materials during smoke adsorption and exhaust, thus improving its practicality. It solves the problem that directly exhausting smoke using a smoke exhaust fan results in a strong adsorption force above building materials. When the adsorption force is too weak, the smoke extraction effect is poor; when the adsorption force is too strong, it can easily affect the combustion state of the building materials, thereby reducing the practicality of the device.

[0008] (II) Technical Solution

[0009] To achieve the goal of not affecting the combustion of materials when adsorbing and exhausting flue gas, thereby improving the practicality of the device, this utility model provides the following technical solution: A flue gas collection and exhaust device for fire resistance testing, comprising a flue pipe, a flue gas exhaust hood fixedly connected to the bottom of the flue pipe, the flue gas exhaust hood having an inverted "funnel" shape, a groove being formed inside the flue pipe, a flue gas exhaust component being provided on the inner wall of the groove, a purifier body being fixedly connected to the inner wall of the flue pipe, a dispersion pipe being fixedly sleeved on the inner wall of the groove, the dispersion pipe having an arc shape, one end of the dispersion pipe extending into the interior of the flue gas exhaust hood, the dispersion pipe being fixedly connected to the flue gas exhaust hood, and a primary filter assembly being provided at one end of the dispersion pipe.

[0010] As a preferred technical solution of this utility model, the smoke exhaust component includes a bracket, the outer wall of which is fixedly connected to the inner wall of the smoke pipe, and the inner wall of the bracket is provided with a smoke exhaust fan.

[0011] As a preferred technical solution of this utility model, the primary filtration component includes a connector and a threaded cylinder. The connector is fixedly connected to one end of the dispersion pipe, and a threaded channel is machined on one side of the connector.

[0012] In a preferred embodiment of this invention, the threaded cylinder is located inside the connector and is threadedly connected to the threaded channel on the inner wall of the connector.

[0013] As a preferred embodiment of this utility model, one end of the threaded cylinder is fixedly connected to an mounting block, and the mounting block has a circular structure.

[0014] As a preferred embodiment of this utility model, a mesh cylinder is fixedly connected to one side of the mounting block, and activated carbon is provided on the inner wall of the mesh cylinder.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a smoke collection and exhaust device for fire resistance testing, which has the following beneficial effects:

[0017] 1. When the exhaust fan is started, its operation creates a strong upward adsorption force inside the groove. This adsorption force is dispersed through the distribution pipes to adsorb the exhaust hood. Since there are several distribution pipes, the adsorption force is more evenly distributed inside the exhaust hood. The inner wall of the mesh cylinder is lined with activated carbon, which can slow down the adsorption force, making the adsorption force inside the exhaust hood more moderate. Therefore, when adsorbing and exhausting flue gas, it will not affect the combustion of materials, thus improving the practicality of the device.

[0018] 2. When the flue gas enters the flue pipe, it first passes through activated carbon, which adsorbs some particulate impurities in the flue gas, thus playing a primary filtration role. When the flue gas exits through the flue pipe, it passes through the purifier body, which purifies and filters harmful gases in the flue gas. This makes the flue gas discharged through the flue pipe safer and prevents pollution of the surrounding air and environment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a smoke collection and exhaust device used for fire resistance testing.

[0020] Figure 2 This is a front sectional view of a smoke collection and exhaust device used for fire resistance testing;

[0021] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0022] Figure 4 This is a schematic diagram of the structure of the mesh cylinder in this application.

[0023] In the diagram: 1. Smoke pipe; 2. Smoke exhaust hood; 3. Groove; 4. Bracket; 5. Smoke exhaust fan; 6. Purifier body; 7. Distributed pipe; 8. Connector; 9. Mounting block; 10. Threaded cylinder; 11. Mesh cylinder; 12. Activated carbon. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] Reference Figure 1-4 The first embodiment of this utility model provides a smoke collection and exhaust device for fire resistance testing, including a smoke pipe 1, a smoke exhaust hood 2 fixedly connected to the bottom of the smoke pipe 1, the smoke exhaust hood 2 being an inverted "funnel" shaped structure, a groove 3 being provided inside the smoke pipe 1, and a smoke exhaust component being provided on the inner wall of the groove 3.

[0027] A purifier body 6 is fixedly connected to the inner wall of the flue pipe 1. The purifier body 6 is an existing device and will not be explained in detail here. When the flue gas is discharged through the flue pipe 1, it will pass through the purifier body 6. The purifier body 6 will purify and filter the harmful gases in the flue gas, so that the flue gas discharged through the flue pipe 1 is purified and filtered, making the discharged gas safer and not polluting the surrounding air and environment. A dispersion pipe 7 is fixedly sleeved on the inner wall of the groove 3. The dispersion pipe 7 has an arc structure and there are several dispersion pipes 7. One end of the dispersion pipe 7 extends into the interior of the smoke exhaust hood 2 and is fixedly connected to the smoke exhaust hood 2. A primary filter component is provided at one end of the dispersion pipe 7.

[0028] Reference Figure 1-2 The smoke exhaust component includes a bracket 4, the outer wall of which is fixedly connected to the inner wall of the smoke pipe 1. The inner wall of the bracket 4 is equipped with a smoke exhaust fan 5. The smoke exhaust fan 5 is an existing device and will not be explained in detail here. When the smoke exhaust fan 5 is started, its operation can create a strong upward suction force inside the groove 3.

[0029] Reference Figure 1-4 The primary filter component includes a connector 8 and a threaded cylinder 10. The connector 8 is fixedly connected to one end of the dispersion pipe 7. A threaded channel is machined on one side of the connector 8. The connector 8 can serve as a connection, and the threaded channel can allow air to pass through without obstructing the exhaust.

[0030] Furthermore, the threaded cylinder 10 is located inside the connector 8, and the threaded cylinder 10 is threadedly connected to the threaded channel on the inner wall of the connector 8. Rotating the threaded cylinder 10 can disengage it from the connector 8, thereby allowing the threaded cylinder 10 to be disassembled and replaced.

[0031] Furthermore, one end of the threaded cylinder 10 is fixedly connected to a mounting block 9, which has a circular structure and can serve as a connection and installation component.

[0032] Furthermore, a mesh cylinder 11 is fixedly connected to one side of the mounting block 9. The inner wall of the mesh cylinder 11 is provided with activated carbon 12. When the flue gas enters the flue pipe 1, it will pass through the activated carbon 12 first. The activated carbon 12 will adsorb some particulate impurities in the flue gas, playing a primary filtration role. At the same time, the activated carbon 12 can slow down the adsorption force, making the adsorption force inside the exhaust hood 2 more moderate.

[0033] During use, the exhaust fan 5 is started, and its operation can create a strong upward adsorption force inside the groove 3. The adsorption force is applied to the exhaust hood 2 through the dispersion pipe 7. Since there are several dispersion pipes 7, the adsorption force is more evenly distributed inside the exhaust hood 2. The inner wall of the mesh cylinder 11 is provided with activated carbon 12, which can slow down the adsorption force, making the adsorption force inside the exhaust hood 2 more moderate, so that it will not affect the combustion of materials when adsorbing and exhausting flue gas.

[0034] When the flue gas enters the flue pipe 1, it first passes through the activated carbon 12, which adsorbs some particulate impurities in the flue gas, thus playing a primary filtration role. When the flue gas exits through the flue pipe 1, it passes through the purifier body 6, which purifies and filters the harmful gases in the flue gas. This makes the flue gas discharged through the flue pipe 1 safer and prevents it from polluting the surrounding air and environment.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A smoke collection and exhaust device for fire resistance testing, comprising a smoke pipe (1), characterized in that: The bottom of the flue (1) is fixedly connected to a smoke exhaust hood (2), which is an inverted funnel-shaped structure. The inside of the flue (1) is provided with a groove (3), and the inner wall of the groove (3) is provided with a smoke exhaust component. The inner wall of the flue (1) is fixedly connected to the purifier body (6), and the inner wall of the groove (3) is fixedly sleeved with a dispersion pipe (7). The dispersion pipe (7) has an arc-shaped structure. One end of the dispersion pipe (7) extends into the interior of the smoke exhaust hood (2). The dispersion pipe (7) is fixedly connected to the smoke exhaust hood (2). One end of the dispersion pipe (7) is provided with a primary filter component.

2. The smoke collection and exhaust device for fire resistance testing according to claim 1, characterized in that: The smoke exhaust component includes a bracket (4), the outer wall of which is fixedly connected to the inner wall of the smoke pipe (1), and a smoke exhaust fan (5) is provided on the inner wall of the bracket (4).

3. A smoke collection and exhaust device for fire resistance testing according to claim 1, characterized in that: The primary filtration component includes a connector (8) and a threaded cylinder (10). The connector (8) is fixedly connected to one end of the dispersion pipe (7), and a threaded channel is machined on one side of the connector (8).

4. A smoke collection and exhaust device for fire resistance testing according to claim 3, characterized in that: The threaded cylinder (10) is located inside the connector (8), and the threaded cylinder (10) is threadedly connected to the threaded channel on the inner wall of the connector (8).

5. A smoke collection and exhaust device for fire resistance testing according to claim 4, characterized in that: One end of the threaded cylinder (10) is fixedly connected to an mounting block (9), and the mounting block (9) has a circular structure.

6. A smoke collection and exhaust device for fire resistance testing according to claim 5, characterized in that: A mesh cylinder (11) is fixedly connected to one side of the mounting block (9), and activated carbon (12) is provided on the inner wall of the mesh cylinder (11).

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