Smoke flow blocking type fireproof door

Abstract

The utility model relates to a smoke choked flow type fireproof door, which belongs to the field of fireproof doors and comprises a door frame, a door plate, a sealing plate and a sealing device. The two door plates are rotationally arranged on the door frame; the sealing plate is arranged in the door frame and hermetically connected with the door plate; the sealing device is slidably arranged at the lower end of the door plate and protrudes out of the door plate. The door plate is provided with a separating device used for driving the sealing mechanism to move upwards. And a sealing device for driving the sealing mechanism to move downwards is arranged on the sealing plate. The sealing mechanism is used for sealing, the sealing device is driven by the separating device to be lifted up when the door is opened and closed, and the sealing mechanism is driven by the sealing device to abut against the ground for sealing when the door is closed.

Description

Technical Field

[0001] This utility model relates to the field of fire doors, and in particular to a smoke-blocking fire door. Background Technology

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity, and heat insulation within a certain period of time. They are fire-resistant partitions with a certain degree of fire resistance, installed in fire compartments, evacuation stairwells, vertical shafts, and other similar locations. In all types of fires, fire smoke is the main cause of casualties. After a certain period of time since the start of combustion, fire smoke rises with the flames and then spreads downwards through entrainment, gradually filling the entire room.

[0003] Chinese Patent Publication No. CN114109217B discloses a smoke-blocking fire door, including a door frame, a door leaf, a bottom rail, a door gap blocking module, and a ground blocking module. The inner side of the door frame is provided with a fire-resistant expansion sealing strip for the door gap. The inner side of the door frame is provided with a pull-down slide seat, and the inner side of the pull-down slide seat is provided with a rotating rack. The inner side of the door leaf is provided with a door gap blocking module, and the inner side of the door gap blocking module is provided with a blocking slider. The inner side of the blocking slider is provided with a blocking strip, and one end of the blocking slider is provided with a sliding rack. The inner side of the door gap blocking module is provided with a transmission gear. The top inner side of the bottom rail is provided with a ground blocking module, and the inner side of the ground blocking module is provided with a ground fire-resistant expansion sealing strip. In this invention, in the early stages of a fire, the sliding out of the blocking strip in the door gap blocking module blocks the gap between the door frame and the door leaf, and the sliding out of the ground fire-resistant expansion sealing strip in the ground blocking module blocks the gap between the door leaf and the bottom rail, thus blocking the flow of smoke.

[0004] The above technical solution seals the connection between the door panel and the door frame. However, according to Article 5.3.10 of the "Code for Construction and Acceptance of Fireproof Roller Shutters, Fireproof Doors and Fireproof Windows" GB50877-2014, "5. The gap between the door leaf and the lower frame or the ground should not be greater than 9mm"; and Article 5.8.2.5 of the "Code for Fireproof Doors" GB12955-2008, "The gap between the door leaf and the lower frame or the ground should not be greater than 9mm".

[0005] However, for ease of construction and opening / closing, a gap of less than 9mm is still left between the bottom of the door panel and the ground, causing smoke to escape from there, making it impossible to completely block the smoke. Utility Model Content

[0006] The purpose of this utility model is to address the problems existing in the background technology by proposing a smoke-blocking fire door that uses a sealing mechanism for sealing, and when the door is opened or closed, the sealing device is driven to lift by a separation device, while when the door is closed, the sealing device drives the sealing mechanism to press against the ground for sealing.

[0007] The technical solution of this utility model: a smoke-blocking fire door, comprising:

[0008] Door frame;

[0009] There are two door panels, both of which are rotatably mounted on the door frame.

[0010] A sealing plate is installed inside the door frame and is sealed to the door panel.

[0011] The sealing mechanism is slidably disposed at the lower end of the door panel and protrudes from the door panel. The door panel is provided with a separation device for driving the sealing mechanism to move upward; the sealing plate is provided with a sealing device for driving the sealing mechanism to move downward.

[0012] Preferably, the door panel is provided with a storage groove, and the sealing mechanism includes a sealing block that is slidably disposed in the storage groove, and a sealing strip disposed on the sealing block.

[0013] Preferably, the upper end of the sealing strip has a T-shaped structure, and multiple sealing strips are provided. The sealing block is provided with a T-shaped groove for installing the sealing strip. The sealing strip is embedded in the T-shaped groove, and the sealing strip and the sealing block are detachably connected.

[0014] Preferably, the separation device includes a support column disposed on the door panel, a mounting seat disposed on the sealing block, and an elastic element disposed on the support column and abutting against the mounting seat; the separation device is provided with multiple elements.

[0015] Preferably, the mounting base has an inverted L-shaped structure, the lower end of the support column is provided with a blocking part, and the elastic element is used to push the mounting base to move upward.

[0016] Preferably, the door panel is provided with a plug groove, and the sealing device includes a guide block provided on the sealing plate and a sliding roller rotatably provided on the sealing block; the lower side of the guide block is inclined, and the guide block and the sliding roller are slidably connected.

[0017] Preferably, the door frame and the door panel are rotatably connected by a hinge, which includes an upper connecting part located at the top, a lower connecting part located at the bottom, and a hinge shaft for rotatably connecting the upper connecting part and the lower connecting part; the upper connecting part is disposed on the door panel, and the lower connecting part is disposed on the door frame.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] In this invention, when the door panel is closed, the sealing device pushes the sealing block downwards, causing the sealing block to press the sealing strip onto the ground, thereby preventing smoke from escaping from the bottom of the door panel. The door panel and the door frame are sealed by a sealing plate, which also prevents smoke from entering. A cover plate is provided at the joint of the two door panels, and a sealing gasket is provided on the cover plate, which can prevent smoke from escaping from the joint of the two door panels, thereby ensuring the blockage of smoke. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Figure 2 This is a partial structural schematic diagram of an embodiment of the present utility model;

[0022] Figure 3 This is a partial exploded view of an embodiment of the present invention.

[0023] Reference numerals in the attached drawings: 1. Door frame; 2. Door panel; 201. Storage groove; 202. Insertion groove; 3. Sealing plate; 4. Hinge; 5. Sealing block; 6. Sealing strip; 7. Sealing device; 701. Guide block; 702. Sliding roller; 8. Separation device; 801. Mounting base; 802. Support column; 803. Elastic element. Detailed Implementation

[0024] Example 1

[0025] like Figures 1-3 As shown, the present invention proposes a smoke-blocking fire door, which includes a door frame 1, a door panel 2, a sealing plate 3, and a sealing device.

[0026] There are two door panels 2, both of which are rotatably mounted on the door frame 1; the sealing plate 3 is located inside the door frame 1 and is sealed to the door panel 2; the sealing device is slidably mounted at the lower end of the door panel 2 and protrudes from the door panel 2; the door panel 2 is provided with a separation device 8 for driving the sealing mechanism to move upward; the sealing plate 3 is provided with a sealing device 7 for driving the sealing mechanism to move downward.

[0027] The door frame 1 and the door panel 2 are rotatably connected by a hinge 4. The hinge 4 includes an upper connecting part located at the top, a lower connecting part located at the bottom, and a hinge shaft for rotatably connecting the upper connecting part and the lower connecting part. The upper connecting part is provided on the door panel 2, and the lower connecting part is provided on the door frame 1.

[0028] In this embodiment, the upper connecting part is set on the door panel 2 and the lower connecting part is set on the door frame 1, so that the weight of the door panel 2 is pressed on the door frame 1 by the hinge 4, which can better support it and avoid the problem of the lower connecting part being separated from the door frame 1 under force. When the door is opened, the sealing mechanism is driven to move upward by the separation device 8, so that the sealing block 5 and the sealing strip 6 are stored in the storage groove 201, so that the sealing strip 6 does not contact the ground. First, it can reduce the resistance of opening the door, and second, it can prevent the sealing strip 6 from rubbing against the ground, thus protecting the sealing strip 6 and increasing its service life.

[0029] When the door panel 2 is closed, the sealing device 7 will push the sealing block 5 downward, causing the sealing block 5 to press the sealing strip 6 onto the ground, thereby preventing smoke from escaping from the lower side of the door panel 2. The door panel 2 and the door frame 1 are sealed by the sealing plate 3, which also prevents smoke from entering. A cover plate is provided at the connection between the two door panels 2, and a sealing gasket is provided on the cover plate, which can prevent smoke from escaping from the connection between the two door panels 2, thereby ensuring the blockage of smoke.

[0030] Example 2

[0031] like Figures 1-3 As shown, the present invention proposes a smoke-blocking fire door. Compared with Embodiment 1, the door panel 2 in this embodiment is provided with a storage groove 201. The sealing mechanism includes a sealing block 5 slidably disposed in the storage groove 201 and a sealing strip 6 disposed on the sealing block 5. The upper end of the sealing strip 6 has a T-shaped structure, and multiple sealing strips 6 are provided. The sealing block 5 is provided with a T-shaped groove for installing the sealing strip 6. The sealing strip 6 is embedded in the T-shaped groove, and the sealing strip 6 and the sealing block 5 are detachably connected.

[0032] In this embodiment, the sealing block 5 supports the sealing strip 6, allowing the sealing strip 6 to seal against the ground, thereby preventing smoke from escaping from the lower side of the door panel 2. The sealing strip 6 and the sealing block 5 are connected by a T-shaped structure, so that when the sealing strip 6 is severely worn or damaged, the old sealing strip 6 can be easily removed and replaced with a new one.

[0033] Example 3

[0034] like Figures 1-3As shown, the present invention proposes a smoke-blocking fire door. Compared with Embodiment 1 or Embodiment 2, the separation device 8 in this embodiment includes a support column 802 disposed on the door panel 2, a mounting base 801 disposed on the sealing block 5, and an elastic element 803 disposed on the support column 802 and abutting against the mounting base 801; multiple separation devices 8 are provided. The mounting base 801 has an inverted L-shaped structure, and a blocking part is provided at the lower end of the support column 802. The elastic element 803 is used to push the mounting base 801 to move upward. The door panel 2 is provided with a insertion groove 202. The sealing device 7 includes a guide block 701 disposed on the sealing plate 3 and a sliding roller 702 rotatably disposed on the sealing block 5; the lower side of the guide block 701 is inclined, and the guide block 701 is slidably connected to the sliding roller 702.

[0035] In this embodiment, when the door panel 2 is opened, the sealing block 5 will move, and the sliding roller 702 on the sealing block 5 will separate from the guide block 701, so that the elastic element 803 can push the mounting base 801 to move upward. The mounting base 801 drives the sealing block 5 to move upward, so that the sealing block 5 drives the sealing strip 6 to move upward and be stored in the storage groove 201. This will not affect the rotation when the door is opened, and will not cause the sealing strip 6 to rub against the ground, thus ensuring the service life of the sealing strip 6.

[0036] When the door is closed, the door panel 2 moves the sealing block 5 to the guide block 701. The guide block 701 is inserted into the storage groove 201 from the insertion groove 202, and the guide block 701 abuts against the sliding roller 702. Since the lower end of the guide block 701 has an inclined structure, the guide block 701 gradually squeezes the sliding roller 702, causing the sliding roller 702 to move the sealing block 5 downward, thereby causing the sealing block 5 to move the sealing strip 6 downward, so that the sealing strip 6 abuts against the ground, thus ensuring the sealing performance when the door is closed and preventing smoke from entering from the lower end of the door panel 2.

[0037] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A smoke-blocking fire door, characterized in that, include: Door frame (1); Door panels (2) are provided in two parts, both of which are rotatably mounted on the door frame (1); A sealing plate (3) is installed inside the door frame (1) and is sealed to the door panel (2); The sealing mechanism is slidably disposed at the lower end of the door panel (2) and protrudes from the door panel (2). The door panel (2) is provided with a separation device (8) for driving the sealing mechanism to move upward; the sealing plate (3) is provided with a sealing device (7) for driving the sealing mechanism to move downward.

2. The smoke-blocking fire door according to claim 1, characterized in that, The door panel (2) is provided with a storage groove (201), and the sealing mechanism includes a sealing block (5) that is slidably disposed in the storage groove (201) and a sealing strip (6) disposed on the sealing block (5).

3. A smoke-blocking fire door according to claim 2, characterized in that, The upper end of the sealing strip (6) has a T-shaped structure. Multiple sealing strips (6) are provided. The sealing block (5) is provided with a T-shaped groove for installing the sealing strip (6). The sealing strip (6) is embedded in the T-shaped groove. The sealing strip (6) and the sealing block (5) are detachably connected.

4. A smoke-blocking fire door according to claim 3, characterized in that, The separation device (8) includes a support column (802) disposed on the door panel (2), a mounting seat (801) disposed on the sealing block (5), and an elastic member (803) disposed on the support column (802) and abutting against the mounting seat (801); the separation device (8) is provided with multiple members.

5. A smoke-blocking fire door according to claim 4, characterized in that, The mounting base (801) has an inverted L-shaped structure, and the lower end of the support column (802) is provided with a blocking part. The elastic element (803) is used to push the mounting base (801) to move upward.

6. A smoke-blocking fire door according to claim 5, characterized in that, The door panel (2) is provided with a plug groove (202), and the sealing device (7) includes a guide block (701) provided on the sealing plate (3) and a sliding roller (702) rotatably provided on the sealing block (5); the lower side of the guide block (701) is inclined, and the guide block (701) and the sliding roller (702) are slidably connected.

7. A smoke-blocking fire door according to claim 1, characterized in that, The door frame (1) and the door panel (2) are rotatably connected by a hinge (4). The hinge (4) includes an upper connecting part located at the top, a lower connecting part located at the bottom, and a hinge shaft for rotatably connecting the upper connecting part and the lower connecting part. The upper connecting part is provided on the door panel (2), and the lower connecting part is provided on the door frame (1).

Images