Double-open type fireproof door

Abstract

The utility model belongs to the technical field of fireproof doors, and particularly relates to a double-open type fireproof door which comprises a door frame and two door plates installed in the door frame, the side faces of the two door plates are connected with the side face of the door frame through at least two sets of bidirectional hinges, and handles are installed at the front ends and the rear ends of the door plates. The left end and the right end of the door frame are respectively provided with a cavity and a movable plate installed in the cavity in a sliding mode, the side face of the door frame is provided with a notch connected with the cavity, and the movable plate is provided with a sealing strip extending into the notch. In addition, the elastic sealing strip extrudes the side face of the door plate, resistance is added to the opening action of the door plate, the inner and outer air pressure difference can be resisted in a fire scene, and the closed state can be maintained. The sealing strip is not contacted with the door plate in a normal state, and the door plate can be opened smoothly.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireproof doors, in particular to a double-opening fireproof door. Background Art

[0002] Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. They are installed in fire compartments, evacuation stairwells and vertical shafts to prevent the spread of fire and smoke.

[0003] In existing double-opening fire doors, the door panels and door frames are usually connected in a hinged manner, which results in a gap between the door panels and the door frames, resulting in poor smoke blocking ability. If sealing strips and other structures are filled between the door panels and the door frames in a conventional sealing manner, there is a defect that the normal opening and closing operation of the door panels is hindered.

[0004] The utility model designs a double-opening fireproof door to solve the above problems. Utility Model Content

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A double-opening fireproof door comprises a door frame and two door panels installed in the door frame, the sides of the two door panels are connected to the side of the door frame by at least two sets of two-way hinges, handles are installed at both the front and rear ends of the door panels, cavities and movable panels slidably installed in the cavities are arranged at both the left and right ends of the door frame, a plurality of notches connected to the cavities are arranged on the side of the door frame, sealing strips extending into the notches are arranged on the movable panels, when the movable panels move toward the direction close to the door panels, the sealing strips will abut against the side of the door panels, and a control mechanism capable of controlling the movement of the movable strips is installed on the top of the door frame.

[0007] As a preferred solution, a telescopic cavity connected to the cavities on both sides is provided at the top of the door frame, and the control mechanism includes a pressure rod slidably arranged in the telescopic cavity. Both ends of the pressure rod are respectively provided with inclined platforms located above the movable plates on both sides, and the lower end of the inclined platform is in contact with the upper end of the movable plate. The contact surfaces of the inclined platform and the movable plate are both inclined surfaces. When the pressure rod moves downward, the movable plate will move toward the direction close to the door panel. The pressure rod is made of metal, and two electromagnets symmetrically distributed on the left and right and located on the upper side of the pressure rod are installed in the telescopic cavity.

[0008] As a preferred solution, a control module is installed in the telescopic cavity, an opening covering the electromagnet and the control module is provided on the telescopic cavity, and a first end cover is installed at the opening, a smoke sensor is installed on the first end cover, and the smoke sensor and the electromagnet are both electrically connected to the control module.

[0009] As a preferred solution, a control module is installed in the telescopic cavity, an opening covering the electromagnet and the control module is provided on the telescopic cavity, and a first end cover is installed at the opening, a smoke sensor is installed on the first end cover, and the smoke sensor and the electromagnet are both electrically connected to the control module.

[0010] As a preferred solution, a push rod is slidably arranged in the cavity, the top end of the push rod is abutted against the lower end of the ramp, and through grooves that run through the front and back and are connected to the bottom of the cavity are provided at both ends of the door frame. The bottom of the push rod extends into the through groove, and second end covers are installed at both ends of the through groove.

[0011] As a preferred solution, a support block is slidably arranged in the through slot and abuts against the bottom of the push rod, and a spring is installed between the side surface of the support block and the inner wall of the through slot.

[0012] As a preferred solution, a threshold is installed at the bottom of the door frame.

[0013] Compared with the existing technology, the advantages of the utility model are:

[0014] 1. When the movable plate designed in the utility model moves toward the direction approaching the door panel, the sealing strip will be against the side of the door panel, and the sealing strip will fill the gap between the side of the door panel and the side of the door frame. In this state, smoke cannot pass through the gap between the door panel and the door frame. In addition, the elastic sealing strip squeezes the side of the door panel, adding resistance to the opening action of the door panel, and can resist the internal and external air pressure difference and maintain a closed state at the fire scene. Under normal circumstances, the sealing strip does not contact the door panel, and the door panel can be opened smoothly.

[0015] 2. The electromagnet designed in the utility model generates magnetic force to attract the pressure rod when it is energized, so that the pressure rod is maintained in the raised initial position. In this case, the movable plate is in a movable state, and the sealing strip is not squeezed to the side of the door panel. If the electromagnet cannot maintain the power supply state due to circuit damage caused by fire, the pressure rod will fall, and finally the sealing strip will be against the side of the door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the utility model.

[0017] Figure 2 It is a rear schematic diagram of the utility model.

[0018] Figure 3 It is a front schematic diagram of a door frame of the present utility model.

[0019] Figure 4 This utility model Figure 1 Schematic diagram of the pressure rod in the initial position from perspective A.

[0020] Figure 5 This utility model Figure 1Schematic diagram of the pressure lever in the lowered position from perspective A.

[0021] Figure 6 This utility model Figure 3 Schematic diagram of perspective B.

[0022] The reference numbers in the figure are: 1. door frame; 2. door panel; 3. cavity; 4. movable plate; 5. sealing strip; 6. telescopic cavity; 7. pressure rod; 8. ramp; 9. electromagnet; 10. control module; 11. first end cover; 12. smoke sensor; 13. push rod; 14. through groove; 15. second end cover; 16. support block; 17. spring; 18. threshold; 19. two-way hinge; 20. handle; 21. notch. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments or drawings are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] A double-opening fire door, such as Figures 1 to 4 As shown, it includes a door frame 1 and two door panels 2 installed in the door frame 1, the sides of the two door panels 2 are connected to the side of the door frame 1 through at least two sets of two-way hinges 19, handles 20 are installed at both the front and rear ends of the door panels 2, and cavities 3 and movable plates 4 slidably installed in the cavities 3 are provided at both the left and right ends of the door frame 1. A plurality of notches 21 connected to the cavities 3 are provided on the side of the door frame 1, and the notches 21 avoid the connection between the two-way hinges 19 and the door frame 1. A sealing strip 5 extending into the notch 21 is provided on the movable plate 4, a control mechanism capable of controlling the movement of the movable strip is installed on the top of the door frame 1, and a threshold 18 is installed at the bottom of the door frame 1;

[0025] When the movable plate 4 moves toward the door panel 2, the sealing strip 5 will be against the side of the door panel 2, and the sealing strip 5 will fill the gap between the side of the door panel 2 and the side of the door frame 1. In this state, smoke cannot pass through the gap between the door panel 2 and the door frame 1. In addition, the elastic sealing strip 5 squeezes the side of the door panel 2, adding resistance to the opening action of the door panel 2, and can resist the internal and external air pressure difference and maintain a closed state at the fire scene. Under normal circumstances, the sealing strip 5 does not contact the door panel 2, and the door panel 2 can be opened smoothly.

[0026] like Figures 3 to 5As shown, a telescopic cavity 6 connected to the cavities 3 on both sides is provided on the top of the door frame 1, and the control mechanism includes a pressure rod 7 slidably arranged in the telescopic cavity 6, and both ends of the pressure rod 7 are respectively provided with inclined platforms 8 located above the moving plates 4 on both sides, and the lower end of the inclined platform 8 is in contact with the upper end of the moving plate 4, and the contact surfaces of the inclined platform 8 and the moving plate 4 are both inclined surfaces. When the pressure rod 7 moves downward, the moving plate 4 will move toward the direction close to the door panel 2. The pressure rod 7 is made of metal, and two electromagnets 9 symmetrically distributed on the left and right and located on the upper side of the pressure rod 7 are installed in the telescopic cavity 6.

[0027] When the electromagnet 9 is energized, it generates magnetic force to attract the pressure rod 7, so that the pressure rod 7 is maintained in the raised initial position. In this case, the movable plate 4 is in a movable state, and the sealing strip 5 is not squeezed to the side of the door panel 2. If the electromagnet 9 cannot maintain the energized state due to circuit damage caused by fire, the pressure rod 7 will fall, and finally the sealing strip 5 will be against the side of the door panel 2.

[0028] like Figure 1 and Figure 4 As shown, a control module 10 is installed in the telescopic cavity 6, an opening covering the electromagnet 9 and the control module 10 is provided on the telescopic cavity 6, and a first end cover 11 is installed at the opening, a smoke sensor 12 is installed on the first end cover 11, and the smoke sensor 12 and the electromagnet 9 are both electrically connected to the control module 10.

[0029] After the smoke sensor 12 detects the smoke, the control electromagnet 9 is disconnected, the pressure rod 7 descends and drives the movable plate 4 to move toward the direction close to the door panel 2, and the sealing strip 5 abuts against the side of the door panel 2.

[0030] like Figure 1 , Figure 3 and Figure 4 As shown, a push rod 13 is slidably arranged in the cavity 3, and the top end of the push rod 13 abuts against the lower end of the ramp 8. Both left and right ends of the door frame 1 are provided with through grooves 14 that pass through the front and back and are connected to the bottom of the cavity 3. The bottom of the push rod 13 extends into the through groove 14, and second end covers 15 are installed at both front and rear ends of the through groove 14.

[0031] like Figure 4 and Figure 5 As shown, a support block 16 is slidably disposed in the through slot 14 and abuts against the bottom of the push rod 13 , and a spring 17 is installed between the side surface of the support block 16 and the inner wall of the through slot 14 .

[0032] The support block 16 is provided with a rounded corner, and the push rod 13 is provided with a chamfered corner, so when the support block 16 is controlled to move toward the position directly below the push rod 13, the support block 16 can push the push rod 13 upward, and at this time the push rod 13 can provide a supporting effect for the pressure rod 7 connected to the ramp 8. In this state, the pressure rod 7 cannot drive the sealing strip 5 to abut against the door panel 2;

[0033] This mode is used to enable the door panel 2 to open and close normally for people to pass through when there is a power outage but no fire;

[0034] In the initial state, the spring 17 is in a compressed state, and the assistant applies force to push the support block 16 to just below the push rod 13 .

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. A double-opening fire door, characterized in that: The invention comprises a door frame (1) and two door panels (2) installed in the door frame (1), the sides of the two door panels (2) being connected to the side of the door frame (1) via at least two sets of bidirectional hinges (19), handles (20) being installed at both the front and rear ends of the door panels (2), cavities (3) and movable panels (4) being slidably installed in the cavities (3) being provided at both the left and right ends of the door frame (1), a plurality of notches (21) being provided on the side of the door frame (1) being connected to the cavities (3), sealing strips (5) extending into the notches (21) being provided on the movable panels (4), and when the movable panels (4) move in a direction close to the door panels (2), the sealing strips (5) will abut against the side of the door panels (2), and a control mechanism capable of controlling the movement of the movable strips being installed at the top of the door frame (1).

2. A double-opening fire door according to claim 1, characterized in that: The top of the door frame (1) is provided with a telescopic cavity (6) connected to the cavities (3) on both sides. The control mechanism comprises a pressure rod (7) slidably arranged in the telescopic cavity (6). Both ends of the pressure rod (7) are provided with inclined platforms (8) located above the movable plates (4) on both sides. The lower end of the inclined platform (8) contacts the upper end of the movable plate (4). The contact surfaces of the inclined platform (8) and the movable plate (4) are both inclined surfaces. When the pressure rod (7) moves downward, the movable plate (4) will move in a direction close to the door panel (2). The pressure rod (7) is made of metal. Two electromagnets (9) symmetrically distributed on the left and right and located on the upper side of the pressure rod (7) are installed in the telescopic cavity (6).

3. A double-opening fire door according to claim 2, characterized in that: A control module (10) is installed in the telescopic cavity (6); an opening covering the electromagnet (9) and the control module (10) is provided on the telescopic cavity (6); a first end cover (11) is installed at the opening; a smoke sensor (12) is installed on the first end cover (11); and the smoke sensor (12) and the electromagnet (9) are both electrically connected to the control module (10).

4. A double-opening fire door according to claim 2, characterized in that: A push rod (13) is slidably arranged in the cavity (3), the top end of the push rod (13) abuts against the bottom end of the inclined platform (8), and both left and right ends of the door frame (1) are provided with through grooves (14) that penetrate front and back and are connected to the bottom of the cavity (3), the bottom of the push rod (13) extends into the through groove (14), and second end covers (15) are installed at both front and rear ends of the through groove (14).

5. A double-opening fire door according to claim 4, characterized in that: A support block (16) is slidably disposed in the through slot (14) and abuts against the bottom of the push rod (13), and a spring (17) is installed between the side surface of the support block (16) and the inner wall of the through slot (14).

6. A double-opening fire door according to claim 1, characterized in that: A threshold (18) is installed at the bottom of the door frame (1).

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