Novel smoke-proof fireproof door

Abstract

The utility model relates to the technical field of fireproof doors, and discloses a novel smoke-proof fireproof door which comprises a door leaf and a door frame, the bottom side of the door leaf is movably connected with a fireproof expansion sealing strip, the bottom side of the fireproof expansion sealing strip is attached to the ground, and the novel smoke-proof fireproof door further comprises an ejection mechanism used for driving the fireproof expansion sealing strip to move. The ejection mechanism comprises a spring piece and an ejection block. When the door leaf is in a closed state, the ejection block of the ejection mechanism is in contact with the door frame, the spring piece is pushed to deform downwards in the adjusting groove, the fireproof expansion sealing strip on the bottom side of the fixing plate is ejected downwards, the fireproof expansion sealing strip is further in contact with the ground, and a gap is blocked; when the door leaf is opened, the top block is separated from the door frame, the spring piece resets, the fireproof expansion sealing strip retracts to be flush with the lower edge of the door leaf, and the door leaf is normally opened.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire door technical field, concretely is a novel smokeproof fire door. BACKGROUND

[0002] With the development of economy, the progress of society, fire safety has been paid more and more attention, high-rise building fire frequently, fire safety is more and more important, and the fire door as the important component of passageway fire and smoke prevention plays an important role in preventing fire spreading and personnel escape, and its role is more and more big, and various smokes in the early stage of fire are important obstacles to personnel escape, and the good smoke prevention effect can maintain the clearness of escape route and prevent the reverse spread of fire. The new national standard GB 12955-2024 replaces GB 19255-2008 and improves the smoke sealing performance index of fire door, so the importance of fire door smoke prevention is more and more prominent.

[0003] The common fire door smoke prevention is by fireproof expansion seal embedded or pasted in the gap between the door leaf and the door frame, and the fireproof expansion seal needs to be heated to expand, and the gap between the door leaf and the ground is too large due to the fact that the fireproof expansion seal does not expand in the early stage of fire, and the smoke spreads through the gap. Especially the fire door on the passageway, in order to improve the passability of personnel, the fire door on the passageway is not provided with a lower door sill, so that a gap is left below the door leaf, and the smoke spreads through the gap, so that various passageways are occupied by harmful smoke in the early stage of fire, and the vision and breathing safety of escape personnel are hindered.

[0004] Therefore, we propose a novel smokeproof fire door, which can solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a novel smokeproof fire door, which solves the problems proposed in the background art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a novel smokeproof fire door, comprising a door leaf and a door frame, the bottom side of the door leaf is movably connected with a fireproof expansion sealing strip, the bottom side of the fireproof expansion sealing strip is attached to the ground, and the novel smokeproof fire door further comprises an ejection mechanism for driving the fireproof expansion sealing strip to move, the ejection mechanism comprises a spring sheet and a top block.

[0007] As an optional solution of the technical scheme of the application, the side close to the door leaf of the fireproof expansion sealing strip is horizontally fixedly connected with a fixed plate, and the arc surface of the spring sheet faces the fireproof expansion sealing strip.

[0008] As an optional solution of the technical scheme of the application, the two ends and the middle part of the spring sheet are both provided with a fixing hole, and the side away from the fireproof expansion sealing strip of the fixed plate is fixedly connected through the fixing hole in the middle part of the fixed plate by a bolt.

[0009] As an optional solution to the technical solution of this application, an adjustment groove is provided on the bottom side of the door leaf, and the end of the spring sheet away from the door frame is fixedly connected to the inner wall of the adjustment groove by a bolt passing through the fixing hole at one end of the spring sheet.

[0010] As an optional solution to the technical solution of this application, the end of the spring sheet near the door frame is fixedly connected to one end of the top block by a bolt passing through the fixing hole at the other end of the spring sheet, and the end of the top block away from the spring sheet abuts against the outside of the door frame.

[0011] As an optional solution to the technical solution of this application, the spring sheet is disposed inside the adjustment groove, and the fireproof expansion sealing strip and the spring sheet are matched with the size of the adjustment groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When the door is closed, the top block of the ejection mechanism contacts the door frame, pushing the spring plate to deform downward in the adjustment groove, pushing the fireproof expansion sealing strip on the bottom side of the fixed plate downward, further making the fireproof expansion sealing strip contact the ground, and the gap is blocked. This enhances the smoke prevention effect of the fire door and also increases the sound insulation effect. When the door is opened, the top block separates from the door frame, the spring plate returns to its original position, the fireproof expansion sealing strip retracts and is flush with the bottom edge of the door, and the door opens normally. Attached Figure Description

[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0014] Fig. 1 This is a schematic diagram of the working operation of a novel fireproof and fireproof door fireproof sealing strip according to this utility model;

[0015] Fig. 2 This is a bottom side view of a novel smoke-proof and fireproof door of this utility model when the door leaf is opened;

[0016] Fig. 3 This is a bottom side view of the hinged connection between the door leaf and the door frame of a novel smoke-proof and fire-proof door according to this utility model.

[0017] In the diagram: 1. Door leaf; 2. Door frame; 3. Top block; 4. Fireproof expansion sealing strip; 5. Fixing plate; 6. Adjustment groove; 61. Spring plate; 62. Fixing hole. Detailed Implementation

[0018] Please see Figs. 1-3This utility model provides a technical solution: a novel smoke and fireproof door, including a door leaf 1 and a door frame 2. A fire-resistant expansion sealing strip 4 is movably connected to the bottom side of the door leaf 1. It also includes a push-out mechanism for driving the fire-resistant expansion sealing strip 4 to move. The push-out mechanism includes a spring plate 61 and a top block 3. An adjustment groove 6 is provided on the bottom side of the door leaf 1. A fixing plate 5 is horizontally fixed to the side of the fire-resistant expansion sealing strip 4 near the door leaf 1. The spring plate 61 is disposed inside the adjustment groove 6. The two ends of the spring plate 61 and... The middle part is provided with a fixing hole 62. The arc surface of the spring plate 61 faces the fireproof expansion sealing strip 4. The side of the fixing plate 5 away from the fireproof expansion sealing strip 4 is fixedly connected by bolts through the fixing hole 62 in the middle of the fixing plate 5. The end of the spring plate 61 away from the door frame 2 is fixedly connected to the inner wall of the adjusting groove 6 by bolts through the fixing hole 62 at one end of the spring plate 61. The end of the spring plate 61 close to the door frame 2 is fixedly connected to one end of the top block 3 by bolts through the fixing hole 62 at the other end of the spring plate 61.

[0019] In this technical solution, when the door leaf 1 is closed, the top block 3 of the ejection mechanism contacts the door frame 2, pushing the spring plate 61 to deform downward in the adjustment groove 6, pushing the fireproof expansion sealing strip 4 on the bottom side of the fixing plate 5 downward, further making the fireproof expansion sealing strip 4 contact the ground, and the gap is blocked. This not only enhances the smoke prevention effect of the fire door, but also increases the sound insulation effect.

[0020] In this embodiment, the fireproof expansion sealing strip 4 and the spring plate 61 are matched with the size of the adjustment groove 6.

[0021] In this technical solution, when the door leaf 1 is opened, the top block 3 separates from the door frame 2, the spring plate 61 resets, and the fixing plate 5 drives the fireproof expansion sealing strip 4 to retract into the adjustment groove 6 and be flush with the lower edge of the door leaf 1, so that the door leaf 1 can be opened normally.

[0022] In this embodiment, the end of the top block 3 away from the spring sheet 61 abuts against the outside of the door frame 2, and the bottom side of the fireproof expansion sealing strip 4 is in contact with the ground.

[0023] In this technical solution, when the door leaf 1 is fully closed, the deformation of the top block 3 pushing the spring plate 61 can just push the fireproof expansion sealing strip 4 on the bottom side of the fixing plate 5 out of the adjustment groove 6 and fit tightly against the ground.

[0024] When a new type of smoke and fireproof door is in use, when the door leaf 1 is closed, the side of the door leaf 1 that is hinged to the door frame 2 is completely in contact with the door frame 2. At this time, the top block 3 of the ejection mechanism contacts the door frame 2, pushing the spring plate 61 to deform downward in the adjustment groove 6, pushing the fireproof expansion sealing strip 4 on the bottom side of the fixing plate 5 downward, further making the fireproof expansion sealing strip 4 contact the ground, and the gap is blocked. This not only enhances the smoke prevention effect of the fireproof door, but also increases the sound insulation effect. When the door leaf 1 is opened, the top block 3 separates from the door frame 2, the spring plate 61 returns to its original position, and the fixing plate 5 drives the fireproof expansion sealing strip 4 to retract into the adjustment groove 6 and be flush with the lower edge of the door leaf 1, and the door leaf 1 opens normally.

Claims

1. A novel smoke and fireproof door, comprising a door leaf (1) and a door frame (2), characterized in that, The bottom side of the door leaf (1) is movably connected to a fireproof expansion sealing strip (4), the bottom side of the fireproof expansion sealing strip (4) is in contact with the ground, and also includes a push-out mechanism for driving the fireproof expansion sealing strip (4) to move, the push-out mechanism including a spring plate (61) and a top block (3).

2. The novel smoke-proof and fire-proof door according to claim 1, characterized in that: The fireproof expansion sealing strip (4) is horizontally fixed to a fixing plate (5) on the side near the door leaf (1), and the arc-shaped surface of the spring sheet (61) faces the fireproof expansion sealing strip (4).

3. A novel smoke-proof and fire-proof door according to claim 2, characterized in that: The spring sheet (61) has fixing holes (62) through both ends and the middle. The fixing plate (5) is fixedly connected to the side away from the fireproof expansion sealing strip (4) by bolts through the fixing holes (62) in the middle of the fixing plate (5).

4. A novel smoke-proof and fire-proof door according to claim 2, characterized in that: The bottom side of the door leaf (1) is provided with an adjustment groove (6), and the end of the spring plate (61) away from the door frame (2) is fixedly connected to the inner wall of the adjustment groove (6) by a bolt passing through the fixing hole (62) at one end of the spring plate (61).

5. A novel smoke-proof and fire-proof door according to claim 2, characterized in that: The end of the spring sheet (61) near the door frame (2) is fixedly connected to one end of the top block (3) by a bolt through the fixing hole (62) at the other end of the spring sheet (61), and the end of the top block (3) away from the spring sheet (61) abuts against the outside of the door frame (2).

6. A novel smoke-proof and fire-proof door according to claim 4, characterized in that: The spring sheet (61) is disposed inside the adjustment groove (6), and the fireproof expansion sealing strip (4) and the spring sheet (61) are matched with the size of the adjustment groove (6).

Images