Opposite-opening type fireproof door adjusting structure
By designing a combination structure of fireproof sealing strips, filters, baffles, and interlocking panels on fire doors, the problems of incomplete sealing at the bottom of fire doors and inadequate closure of ventilation openings are solved, achieving both sealing performance during a fire and restoration of ventilation function after a fire.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI QIHANGXIN IND & TRADE CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-19
AI Technical Summary
Existing double-leaf fire doors lack adequate bottom sealing in the event of a fire, allowing flames and dense smoke to easily enter the room. Additionally, ventilation openings may not close properly, causing dense smoke to enter the room.
A fire door adjustment structure was designed, including a fireproof sealing strip, a filter screen, a baffle and a mating plate. Through the cooperation of springs and connecting rods, the bottom of the fire door is sealed and the ventilation opening is tightly closed.
In the event of a fire, the bottom gaps of the fire door are effectively sealed to prevent flames and smoke from entering. At the same time, it can be restored to normal use after the fire is over, ensuring that the ventilation function of the vents is not affected.
Smart Images
Figure CN224260204U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire door technology, specifically to an adjustable structure for a double-leaf fire door. Background Technology
[0002] Fire doors are doors that meet the requirements of fire resistance stability, integrity, and thermal insulation within a certain period of time. They are fire-resistant partitions with a certain degree of fire resistance, installed in fire-resistant compartments, evacuation stairwells, vertical shafts, and other similar locations. In building construction, they are specifically used to isolate fire sources and play a crucial role in firefighting, providing people with an escape route in the event of a fire. During use, some functions of fire doors need to be adjusted to achieve a more practical effect.
[0003] However, the existing adjustable structure of double-leaf fire doors has the following disadvantages:
[0004] (1) The existing double-leaf fire door adjustment structure has a weak bottom sealing function. When in use, the bottom of the fire door is usually left with a gap for easy opening and closing. However, in the event of a fire, flames and thick smoke can easily enter the room from the bottom of the fire door, causing injury to people.
[0005] (2) The existing double-leaf fire door adjustment structure has a weak function of tightly closing the ventilation opening. Under normal circumstances, the ventilation opening on the fire door can promote air circulation, improve the ventilation effect of the place, help dissipate heat and keep the air fresh. However, when a fire occurs, the ventilation opening needs to be closed. If the ventilation opening is not closed tightly, dense smoke will enter the room through the ventilation opening and cause harm to people. Utility Model Content
[0006] The purpose of this utility model is to provide an adjustable structure for a double-leaf fire door to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A double-leaf fire door adjustment structure includes a door frame, a fire door rotatably mounted on the inner side wall of the door frame, a first spring fixedly connected to the inner bottom wall of the fire door, a connecting plate fixedly connected to the bottom end of the first spring, a fireproof sealing strip fixedly connected to the bottom of the connecting plate, a fixing hole in the middle of one side of the connecting plate, a ventilation opening in the bottom of the fire door, a filter screen fixedly connected inside the ventilation opening, a fixing block fixedly connected to the side near the ventilation opening in the bottom of the fire door, a connecting rod fixedly connected to the bottom of the fixing block, a rotating block rotatably connected to the outer surface of the connecting rod, a baffle fixedly connected to one side of the rotating block, and a handle fixedly mounted in the middle of the front of the fire door.
[0009] Preferably, a fixing post is slidably connected inside the fixing hole in the middle of one side of the connecting plate, a second spring is fixedly connected to one side of the fixing post, a base block is fixedly connected to one side of the second spring, a sliding rod is slidably connected inside the base block, a pulling post is fixedly connected to one end of the sliding rod, and a fixing post is fixedly connected to the other end of the sliding rod.
[0010] Preferably, push blocks are fixedly connected to both ends of one side of the connecting plate, and a sliding groove is provided at the bottom of the front of the fire door, with push blocks slidably connected inside the sliding groove.
[0011] Preferably, a window frame is fixedly connected inside the fire door, and an observation glass is fixedly connected inside the window frame.
[0012] Preferably, a fitting plate is fixedly connected to the middle of the back of the baffle, and the fitting plate fits into the vent.
[0013] Preferably, the top and bottom of the back of the baffle are fixedly connected with locking blocks, and the top and bottom of the ventilation opening near the bottom of the fire door are provided with locking slots, and the locking blocks are engaged in both of the locking slots.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This type of adjustable double-leaf fire door, in the event of a fire, allows the user to pull the pull rod, causing the sliding rod to move the fixed rod out of the fixing hole on one side of the connecting plate. This compresses the second spring, causing it to deform. Since the first spring remains compressed, when the fixed rod is completely out of the fixing hole, the first spring releases, causing the connecting plate to move the fireproof sealing strip and the push block downwards to the ground, sealing the gap at the bottom of the fire door. This prevents flames and smoke from entering the room through the gap. After use, pulling the push block upwards causes the connecting plate to compress the first spring, moving the fireproof sealing strip upwards. When the fixing hole on one side of the connecting plate moves to the fixed rod, the second spring releases, moving the fixed rod into the fixing hole, thus achieving a cyclical use mechanism.
[0016] This type of adjustable double-leaf fire door allows the operator to push a baffle when a fire breaks out. The baffle, along with the locking block and the fitting plate, rotates through the setting of the rotating block and the connecting rod fixing block. When the baffle rotates 90 degrees to the surface of the fire door, the locking block engages with the locking groove, and the fitting plate is fitted into the ventilation opening, thereby achieving the function of tightly closing the ventilation opening. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0019] Figure 3 This is a schematic diagram of the connecting plate and fireproof sealing strip of this utility model;
[0020] Figure 4 This is a schematic diagram of the baffle and the interlocking plate of this utility model.
[0021] In the diagram: 1. Door frame; 2. Fire door; 3. First spring; 4. Connecting plate; 5. Fireproof sealing strip; 6. Fixing post; 7. Second spring; 8. Base block; 9. Sliding rod; 10. Pulling post; 11. Pushing block; 12. Fixing block; 13. Connecting rod; 14. Rotating block; 15. Baffle; 16. Locking block; 17. Fitting plate; 18. Ventilation opening; 19. Filter screen; 20. Slot; 21. Window frame; 22. Observation glass; 23. Handle. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-4 As shown, this utility model provides a technical solution:
[0024] A hinged fire door adjustment structure includes a door frame 1, a fire door 2 rotatably mounted on the inner wall of the door frame 1, a first spring 3 fixedly connected to the bottom inner wall of the fire door 2, a connecting plate 4 fixedly connected to the bottom end of the first spring 3, a fireproof sealing strip 5 fixedly connected to the bottom of the connecting plate 4, a fixing hole in the middle of one side of the connecting plate 4, a ventilation opening 18 at the bottom of the fire door 2, a filter screen 19 fixedly connected inside the ventilation opening 18, the filter screen 19 performing simple smoke purification when the ventilation opening 18 is not closed in time, and the ventilation opening 18 is located near the bottom of the fire door 2. A fixing block 12 is fixedly connected to one side of the fire door 2. A connecting rod 13 is fixedly connected to the bottom of the fixing block 12. A rotating block 14 is rotatably connected to the outer surface of the connecting rod 13. A baffle 15 is fixedly connected to one side of the rotating block 14. When in use, the operator pushes the baffle 15. The baffle 15 rotates through the setting of the rotating block 14, the connecting rod 13 and the fixing block 12. When the baffle 15 rotates 90 degrees to the surface of the fire door 2, it closes the ventilation opening 18. A handle 23 is fixedly installed in the middle of the front of the fire door 2. The fire door 2 is opened by using the handle 23.
[0025] In this embodiment, preferably, a fixing post 6 is slidably connected inside the fixing hole in the middle of one side of the connecting plate 4. A second spring 7 is fixedly connected to one side of the fixing post 6, and a base block 8 is fixedly connected to one side of the second spring 7. A sliding rod 9 is slidably connected inside the base block 8. A pulling post 10 is fixedly connected to one end of the sliding rod 9, and a fixing post 6 is fixedly connected to the other end of the sliding rod 9. When in use, the user pulls the pulling post 10 to move the sliding rod 9 and the fixing post 6 out of the fixing hole in one side of the connecting plate 4, and squeezes the second spring 7 to deform it. Since the first spring 3 is always in a compressed state, when the fixing post 6 is completely away from the fixing hole, the first spring 3 is released, causing the connecting plate 4 to move the fireproof sealing strip 5 downward to the ground, sealing the gap at the bottom of the fire door 2, thereby preventing flames and dense smoke from entering the room through the gap at the bottom of the fire door 2.
[0026] In this embodiment, preferably, push blocks 11 are fixedly connected to both ends of one side of the connecting plate 4. A sliding groove is opened at the bottom of the front of the fire door 2, and the push blocks 11 are slidably connected inside the sliding groove. When it is not necessary to seal the bottom of the fire door 2, the push blocks 11 are pulled upward, so that the connecting plate 4 squeezes the first spring 3 and drives the fireproof sealing strip 5 to move upward. When the fixing hole is opened on one side of the connecting plate 4 and moves to the fixing post 6, the second spring 7 is released, and the fixing post 6 is moved into the fixing hole to fix the connecting plate 4, thereby achieving the function of recycling.
[0027] In this embodiment, preferably, a window frame 21 is fixedly connected inside the fire door 2, and an observation glass 22 is fixedly connected inside the window frame 21, so that the outside can be observed through the observation glass 22 during use;
[0028] In this embodiment, preferably, a fitting plate 17 is fixedly connected to the middle of the back of the baffle 15. The fitting plate 17 fits into the vent 18. The vent 18 is blocked by the fitting plate 17, and the baffle 15 is used to make the vent 18 tightly closed.
[0029] In this embodiment, preferably, the top and bottom of the back of the baffle 15 are fixedly connected with a locking block 16, and the top and bottom of the ventilation opening 18 near the bottom of the fire door 2 are provided with a slot 20. Both slots 20 are engaged with the locking block 16. By setting the locking block 16 and the slot 20, the baffle 15 is locked in place during use to prevent accidental opening.
[0030] In this embodiment, the adjustable structure of a double-leaf fire door is used such that when the user pulls the pulling column 10, the sliding rod 9 moves the fixing column 6 out of the fixing hole on one side of the connecting plate 4, and the second spring 7 is compressed, causing the second spring 7 to deform. Since the first spring 3 is always compressed, when the fixing column 6 is completely away from the fixing hole, the first spring 3 is released, causing the connecting plate 4 to move the fireproof sealing strip 5 downward to the ground, sealing the gap at the bottom of the fire door 2, thereby preventing flames and thick smoke from entering the room through the gap at the bottom of the fire door 2. Then, the operator pushes the baffle 1. 5. The baffle 15, along with the locking block 16 and the fitting plate 17, rotates through the rotating block 14, the connecting rod 13, and the fixing block 12. The locking block 16 engages with the locking groove 20, and the fitting plate 17 fits into the ventilation opening 18, thereby achieving the function of tightly closing the ventilation opening 18. After the fire is extinguished, the pushing block 11 is pulled upward, causing the connecting plate 4 to squeeze the first spring 3 and move the fireproof sealing strip 5 upward. When the fixing hole on one side of the connecting plate 4 moves to the fixing post 6, the second spring 7 is released, moving the fixing post 6 into the fixing hole to fix the fixing post connecting plate 4, thereby achieving the function of recycling.
[0031] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A hinged fire door adjustment structure, characterized in that: The fire door (2) is rotatably installed on the inner side wall of the door frame (1). A first spring (3) is fixedly connected to the bottom wall of the fire door (2). A connecting plate (4) is fixedly connected to the bottom end of the first spring (3). A fireproof sealing strip (5) is fixedly connected to the bottom of the connecting plate (4). A fixing hole is opened in the middle of one side of the connecting plate (4). A ventilation opening (18) is opened at the bottom of the fire door (2). A filter screen (19) is fixedly connected inside the ventilation opening (18). A fixing block (12) is fixedly connected to one side of the ventilation opening (18) at the bottom of the fire door (2). A connecting rod (13) is fixedly connected to the bottom of the fixing block (12). A rotating block (14) is rotatably connected to the outer surface of the connecting rod (13). A baffle (15) is fixedly connected to one side of the rotating block (14). A handle (23) is fixedly installed in the middle of the front of the fire door (2).
2. The adjustable structure for a double-leaf fire door according to claim 1, characterized in that: A fixing post (6) is slidably connected inside a fixing hole in the middle of one side of the connecting plate (4). A second spring (7) is fixedly connected to one side of the fixing post (6). A bottom block (8) is fixedly connected to one side of the second spring (7). A sliding rod (9) is slidably connected inside the bottom block (8). A pulling post (10) is fixedly connected to one end of the sliding rod (9), and a fixing post (6) is fixedly connected to the other end of the sliding rod (9).
3. The adjustable structure for a double-leaf fire door according to claim 1, characterized in that: Both ends of one side of the connecting plate (4) are fixedly connected to push blocks (11), and the bottom front of the fire door (2) is provided with a sliding groove, and the push block (11) is slidably connected inside the sliding groove.
4. The adjustable structure for a double-leaf fire door according to claim 1, characterized in that: The fire door (2) is fixedly connected to a window frame (21), and the window frame (21) is fixedly connected to an observation glass (22).
5. The adjustable structure for a double-leaf fire door according to claim 1, characterized in that: A fitting plate (17) is fixedly connected to the middle of the back of the baffle (15), and the fitting plate (17) and the vent (18) fit together.
6. The adjustable structure for a double-leaf fire door according to claim 1, characterized in that: The top and bottom of the back of the baffle (15) are fixedly connected with a locking block (16), and the top and bottom of the ventilation opening (18) near the bottom of the fire door (2) are provided with a slot (20), and the two slots (20) are locked with a locking block (16).