A fireproof door that blocks heat radiation
By installing a dust adsorption filter plate and adjustment mechanism at the smoke inlet of the smoke extraction device on the fire door, the problem of dust accumulation is solved, achieving effective dust interception and long-term operation of the smoke extraction device, and preventing smoke leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING MEXIN MESSON DOORS IND CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-07-31
AI Technical Summary
Existing heat-insulating fire doors are prone to dust accumulation in smoke absorbers during fires, leading to reduced smoke extraction efficiency and inconvenient cleaning.
A dust adsorption filter plate is installed below the smoke inlet of the main body of the smoking device. It uses the filtration principle that the fiber pore size is smaller than the dust particles to intercept dust, and the filter plate can be easily disassembled and sealed through the adjustment mechanism.
It effectively intercepts dust, extends the life of the fumigation equipment, maintains the fumigation effect, prevents smoke from leaking from the side gaps, and simplifies the filter plate replacement process.
Smart Images
Figure CN224579276U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door technology, and in particular to a fire door that blocks heat radiation. Background Technology
[0002] As an important component of fire-resistant building compartments, fire doors play a crucial role in protecting people's lives and property because their fire resistance performance directly affects the control and spread of fire after it breaks out.
[0003] Smoke is one of the main hazards during a fire, as it contains a large amount of dust.
[0004] Chinese Patent Publication No. CN219081417U discloses a heat-radiation-blocking fire door, relating to the field of fire door technology. It includes a building wall, an internal door frame, a fire-resistant sealing strip on the outer surface of the door frame, a fire door on the outer surface of the door frame, and a smoking mechanism inside the building wall. Through the functions of the door frame, fire-resistant sealing strip, and fire door, when the fire door is closed, the fire door tightly covers the gaps between the door frame and the surrounding area, preventing smoke from entering the fire escape route through these gaps. Through the smoking mechanism, when personnel repeatedly open the fire door to escape the fire escape route, allowing smoke to enter, the fire door absorbs the smoke and transfers it to the ventilation duct, preventing smoke from entering the fire escape route and causing smoke accumulation that could threaten personnel's lives. This achieves the safety of a heat-radiation-blocking fire door.
[0005] In some existing technologies, if smoke is removed by relying solely on smoke absorbers, a large amount of dust can easily accumulate on the inner wall of the conveying pipe, making it difficult to clean. Over time, this can affect the smoke absorption effect of the smoke absorption equipment, leading to a decrease in the smoke blocking effect. Utility Model Content
[0006] The main purpose of this utility model is to provide a heat radiation blocking fire door, which can effectively solve the problem in some existing technologies where smoke is one of the main dangerous factors during a fire. Smoke contains a large amount of dust. If only smoke absorbers are used to remove smoke, a large amount of dust will easily accumulate on the inner wall of the conveying pipe, which is inconvenient to clean. Over time, this will affect the smoke absorption effect of the smoke absorption equipment and lead to a decrease in the smoke blocking effect.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] A heat radiation blocking fire door includes an installation mechanism, a door body mechanism is installed on the lower side of the inner surface of the installation mechanism, a filter mechanism is installed in the middle of the upper part of the inner surface of the installation mechanism, an adjustment mechanism is provided below the filter mechanism, and a smoke-smoking device body is provided above the filter mechanism. The adjustment mechanism and the smoke-smoking device body are both installed on the upper side of the inner surface of the installation mechanism.
[0009] Preferably, the installation mechanism includes a wall frame, a smoking trough is provided on the upper side inside the wall frame, limit blocks are symmetrically fixedly connected to the front side of the inner wall of the smoking trough, a sealing ring I is provided on the outer side of a plurality of the limit blocks, and a sealing ring II is fixedly connected to the rear side of the inner surface of the smoking trough.
[0010] Preferably, a plurality of the limiting blocks are engaged with a dust adsorption filter plate on opposite sides of the upper part of the sealing ring. The dust adsorption filter plate is slidably connected to the upper side inside. A limiting plate is fixedly connected to the rear end of the dust adsorption filter plate. Protrusions are symmetrically fixedly connected to the rear end of the limiting plate.
[0011] Preferably, a fire door body is symmetrically and rotatably connected to the middle of the lower side of the inner surface of the wall frame, and a handle is symmetrically and fixedly connected to the outer surface of the two fire door bodies. A sealing plate is fixedly connected to the upper and lower ends of the two fire door bodies.
[0012] Preferably, the sealing ring two is engaged with the dust adsorption filter plate on the opposite side by a sealing strip.
[0013] Preferably, a second limiting plate is fixedly connected to the rear end of the sealing strip, a threaded sleeve is fixedly connected to the middle of the left end of the second limiting plate, and a sliding sleeve is fixedly connected to the middle of the right end of the second limiting plate.
[0014] Preferably, the inner surface of the threaded sleeve is threaded with a threaded rod, and the inner surface of the sliding sleeve is slidably connected with a limit rod.
[0015] Preferably, the rear ends of the threaded rod and the limiting rod are both fixedly connected to an adjusting handle, the front ends of the threaded rod and the limiting rod are both fixedly connected to a rotating disc, and the outer sides of the two rotating discs are rotatably connected to a fixing sleeve, and the two fixing sleeves are respectively fixedly connected to the left and right sides of the upper rear part of the inner surface of the wall frame.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] 1. In the implementation of this utility model, by setting up a filtration mechanism, a large amount of dust easily accumulates on the inner wall of the conveying pipe, which is inconvenient to clean. Over time, this can easily affect the smoke absorption effect of the smoke absorption equipment. To address this, a dust adsorption filter plate is installed below the smoke inlet of the smoke absorption equipment body. The dust adsorption filter plate can perform preliminary filtration and interception of dust in the smoke. The fiber pore size of the dust adsorption filter plate is smaller than that of the dust particles. Large dust particles in the airflow collide with the filter plate fibers due to inertia and are captured. Tiny dust particles are adsorbed after contacting the fiber surface due to Brownian motion, thereby achieving the purpose of intercepting and capturing dust. This prevents a large amount of dust from entering the interior of the pipe of the smoke absorption equipment body, thus helping to extend the service life of the smoke absorption equipment body and improve the smoke absorption effect.
[0018] 2. In the implementation of this utility model, by setting an adjustment mechanism, the sealing strip can seal the lower rear of the dust adsorption filter plate from the outside, preventing smoke from escaping from the side gaps. The adjustment mechanism can also facilitate the disassembly and assembly of the dust adsorption filter plate. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the overall front axle side structure of this utility model;
[0021] Figure 3 This is a partial structural diagram of the door mechanism of this utility model;
[0022] Figure 4 This is a schematic diagram of the internal explosion effect structure of the installation mechanism of this utility model;
[0023] Figure 5 This is a partial cross-sectional view of the adjustment mechanism of this utility model.
[0024] In the diagram: 1. Installation mechanism; 101. Wall frame; 102. Smoke trough; 103. Limiting block; 104. Sealing ring one; 105. Sealing ring two; 2. Door mechanism; 201. Fire door body; 202. Handle one; 203. Sealing plate; 3. Filtering mechanism; 301. Dust adsorption filter plate; 302. Limiting plate one; 303. Protrusion; 4. Adjustment mechanism; 401. Sealing strip; 402. Limiting plate two; 403. Threaded sleeve; 404. Threaded rod; 405. Rotating disc; 406. Fixed sleeve; 407. Adjusting handle two; 408. Sliding sleeve; 409. Limiting rod; 5. Smoke equipment body. Detailed Implementation
[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0026] Example 1
[0027] like Figure 1 As shown, a heat radiation blocking fire door includes an installation mechanism 1, a door body mechanism 2 installed on the lower side of the inner surface of the installation mechanism 1, a filter mechanism 3 installed in the middle of the upper part of the inner surface of the installation mechanism 1, an adjustment mechanism 4 provided below the filter mechanism 3, and a smoke-smoking device body 5 provided above the filter mechanism 3. The adjustment mechanism 4 and the smoke-smoking device body 5 are both installed on the upper side of the inner surface of the installation mechanism 1.
[0028] In this embodiment, after the fire door body 201 is pulled open by the hand handle 202, the sealing plate 203 opposite to the fire door body 201 rotates around the installation hinge of the fire door body 201 together with the fire door body 201. When the sealing plate 203 shifts, the smoke trough 102 is exposed below. The smoke device body 5 is linked with the smoke alarm inside the corridor. When the alarm sounds, the smoke device body 5 automatically starts to work.
[0029] Smoke is absorbed by the smoke extraction device body 5 from the smoke extraction trough 102. When it passes through the dust adsorption filter plate 301, the dust in the smoke is intercepted and captured by the dust adsorption filter plate 301. Then it passes through the dust adsorption filter plate 301 and is drawn into the interior of the smoke extraction device body 5. Then it is discharged from the exhaust port of the smoke extraction device body 5 to the smoke exhaust pipe of the corridor.
[0030] When replacing the dust adsorption filter plate 301, hold the left-hand adjustment handle 407 and rotate it. With the threaded rotation connection between the threaded rod 404 and the threaded sleeve 403, the limiting plate 402, along with the sealing strip 401, moves to the rear end and moves out of the rear side of the smoke trough 102. Then, hold the protrusion 303 and pull the dust adsorption filter plate 301 out of the smoke trough 102. When installing the dust adsorption filter plate 301, engage the dust adsorption filter plate 301 with the top of several limiting blocks 103. Hold the adjustment handle 407 and rotate it to push the sealing strip 401 at the front end of the limiting plate 402 into the rear side of the smoke trough 102, below the dust adsorption filter plate 301, to engage and connect it. This seals the connection between the filter mechanism 3 and the installation mechanism 1, thus limiting the dust adsorption filter plate 301 from the rear. The overall operation is simple and convenient.
[0031] For details, please refer to Figure 1 and Figure 4In this embodiment, the installation mechanism 1 includes a wall frame 101. A smoking trough 102 is provided on the upper side inside the wall frame 101. Limiting blocks 103 are symmetrically fixedly connected to the front side of the inner wall of the smoking trough 102. A sealing ring 104 is provided on the outer side of several limiting blocks 103. A sealing ring 2 105 is fixedly connected to the rear side of the inner surface of the smoking trough 102.
[0032] Further reference Figure 1 and Figure 4 In this embodiment, several limiting blocks 103 are engaged with the dust adsorption filter plate 301 on opposite sides of the upper part of the sealing ring 104. The dust adsorption filter plate 301 is slidably connected to the upper side inside 305. The rear end of the dust adsorption filter plate 301 is fixedly connected to the limiting plate 302. The rear end of the limiting plate 302 is symmetrically fixedly connected to the protrusions 303 on the left and right.
[0033] Further reference Figure 2 and Figure 3 In this embodiment, a fire door body 201 is symmetrically rotated and connected to the middle of the lower side of the inner surface of the wall frame 101. A handle 202 is symmetrically fixed to the outer surface of the two fire door bodies 201. A sealing plate 203 is fixedly connected to the upper and lower ends of the two fire door bodies 201.
[0034] By installing a dust adsorption filter plate 301 below the smoke inlet of the smoke extraction device body 5, the dust adsorption filter plate 301 can perform preliminary filtration and interception of dust in the smoke. The fiber pore size of the dust adsorption filter plate 301 is smaller than the dust particles. Large dust particles in the airflow collide with the filter plate fibers due to inertia and are captured. Tiny dust particles are adsorbed after contacting the fiber surface due to Brownian motion, thereby achieving the purpose of intercepting and capturing dust and preventing a large amount of dust from entering the inside of the pipe of the smoke extraction device body 5. This helps to extend the service life of the smoke extraction device body 5 and improve the smoke extraction effect.
[0035] Example 2
[0036] This embodiment adds an adjustment mechanism 4 to seal and limit the filter mechanism 3 based on the first embodiment. By setting the adjustment mechanism 4, the dust adsorption filter plate 301 can be sealed from the outside.
[0037] For details, please refer to Figure 4 and Figure 5In this embodiment, the sealing ring 105 and the dust adsorption filter plate 301 are engaged with the sealing strip 401 on opposite sides. The rear end of the sealing strip 401 is fixedly connected to the limiting plate 402. The middle of the left end of the limiting plate 402 is fixedly connected to the threaded sleeve 403. The middle of the right end of the limiting plate 402 is fixedly connected to the sliding sleeve 408. The inner surface of the threaded sleeve 403 is threaded with a threaded rod 404. The inner surface of the sliding sleeve 408 is slidably connected to the limiting rod 409.
[0038] Further reference Figure 4 and Figure 5 In this embodiment, the rear ends of the threaded rod 404 and the limiting rod 409 are both fixedly connected to the adjustment handle 407, the front ends of the threaded rod 404 and the limiting rod 409 are both fixedly connected to the rotating disc 405, the outer sides of the two rotating discs 405 are both rotatably connected to the fixing sleeves 406, and the two fixing sleeves 406 are respectively fixedly connected to the left and right sides of the upper rear part of the inner surface of the wall frame 101.
[0039] By setting the adjustment mechanism 4, the sealing strip 401 can seal the lower rear of the dust adsorption filter plate 301 from the outside, preventing smoke from escaping from the side gaps. The adjustment mechanism 4 can also facilitate the disassembly and assembly of the dust adsorption filter plate 301.
[0040] The door mechanism 2 in this solution can be an insulated fire door in the existing technology. Through fire-resistant materials and structural design, it can prevent flames from penetrating or spreading to other areas, and use sealing performance to prevent toxic fumes from entering the escape route or safe area.
[0041] The dust adsorption filter plate 301 in this solution can be a flat-type granular activated carbon filter in the existing technology, which can remove dust particles in the air.
[0042] The smoking device body 5 in this solution can adopt the explosion-proof exhaust fan in the existing technology. It has explosion-proof function and can quickly exhaust smoke and harmful gases. It uses the principle of centrifugal fan to generate centrifugal force through the high-speed rotation of the impeller, which draws in air and smoke and discharges them radially to the smoke exhaust pipe. It is suitable for scenarios that require high wind pressure and large air volume, and has good high temperature resistance.
[0043] Since the above devices are all very mature products in the prior art, they will not be described in detail in this application.
[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A fire door which is resistant to thermal radiation, comprising a mounting mechanism (1), characterised in that: A door mechanism (2) is installed on the lower side of the inner surface of the installation mechanism (1). A filter mechanism (3) is installed in the middle of the upper part of the inner surface of the installation mechanism (1). An adjustment mechanism (4) is provided below the filter mechanism (3). A smoking device body (5) is provided above the filter mechanism (3). The adjustment mechanism (4) and the smoking device body (5) are both installed on the upper side of the inner surface of the installation mechanism (1).
2. A fire door according to claim 1, wherein: The installation mechanism (1) includes a wall frame (101), and a smoking groove (102) is provided on the upper side inside the wall frame (101). Limiting blocks (103) are symmetrically fixedly connected to the front side of the inner wall of the smoking groove (102). A sealing ring (104) is provided on the outer side of a plurality of the limiting blocks (103). A sealing ring (105) is fixedly connected to the rear side of the inner surface of the smoking groove (102).
3. A fire door according to claim 2, wherein: A plurality of the limiting blocks (103) are engaged with a dust adsorption filter plate (301) on opposite sides of the upper part of the sealing ring (104). The dust adsorption filter plate (301) is slidably connected to the upper side inside (305). A limiting plate (302) is fixedly connected to the rear end of the dust adsorption filter plate (301). Protrusions (303) are symmetrically fixedly connected to the rear end of the limiting plate (302).
4. A fire door according to claim 2, wherein: Fire door bodies (201) are symmetrically rotatably connected to the middle of the lower side of the inner surface of the wall frame (101). Handles (202) are symmetrically fixed to the outer surfaces of the two fire door bodies (201). Sealing plates (203) are fixedly connected to the upper and lower ends of the two fire door bodies (201).
5. A fire door according to claim 3, wherein: The sealing ring 2 (105) and the dust adsorption filter plate (301) are engaged with a sealing strip (401) on the opposite side.
6. A fire door according to claim 5, wherein: The sealing strip (401) is fixedly connected to the rear end of the limiting plate two (402), and a threaded sleeve (403) is fixedly connected to the middle of the left end of the limiting plate two (402), and a sliding sleeve (408) is fixedly connected to the middle of the right end of the limiting plate two (402).
7. A fire door according to claim 6, wherein: The inner surface of the threaded sleeve (403) is threaded with a threaded rod (404), and the inner surface of the sliding sleeve (408) is slidably connected with a limit rod (409).
8. A fire door according to claim 7, wherein: The rear ends of the threaded rod (404) and the limiting rod (409) are both fixedly connected to the second adjusting handle (407). The front ends of the threaded rod (404) and the limiting rod (409) are both fixedly connected to the rotating discs (405). The outer sides of the two rotating discs (405) are rotatably connected to the fixing sleeves (406). The two fixing sleeves (406) are respectively fixedly connected to the left and right sides of the upper rear part of the inner surface of the wall frame (101).