Steel fireproof door

Abstract

The utility model relates to the technical field of fireproof doors, in particular to a steel fireproof door which comprises a door plate, a driving mechanism, a first plugging block, a second plugging block, a smoke sensor and a controller, a ventilation opening is formed in the door plate, a cavity is formed in the door plate and communicated with the ventilation opening, and the first plugging block and the second plugging block are located on the two sides of the ventilation opening respectively. When a fire disaster happens, the smoke sensor transmits a signal to the controller and controls the controller to control the driving mechanism, the driving mechanism drives the first blocking block and the second blocking block to move towards the ventilation opening, the ventilation opening is blocked, poisonous gas is prevented from penetrating through the fireproof door, and compared with the prior art, poisonous gas can be prevented from penetrating through the fireproof door in time when the fire disaster happens.

Description

Technical Field

[0001] This utility model relates to the field of fire door technology, and in particular to a steel fire door. Background Technology

[0002] However, existing steel fire doors have certain defects in use. Existing fire door devices typically use fire-resistant materials to insulate against heat. During use, a door closer keeps the fire door closed, but ventilation is not possible in daily use. This leads some people to leave the fire door open for extended periods for convenience. In the event of a fire, the fire door cannot be closed in time, rendering it ineffective and creating a risk and safety hazard. Chinese patent CN220645734U discloses a high-precision molded steel fire door, specifically comprising a door frame, door panel, and hinges. One side of the hinge is fixed to the side of the door panel, and the other side is fixed to the door frame. The door panel is hinged to the door frame via the hinges. The door panel has an internal cavity and a ventilation window with multiple deflectors. A sandbox filled with sand is located at the top of the cavity, and a limiting block is located on the inner wall of the cavity, with the sandbox positioned above the limiting block. A limiting plate is provided at the lower end of the cavity, and a base plate is provided at the bottom of the sandbox. A spring is provided at the upper end of the limiting plate, with one end fixed to the upper end of the limiting plate and the other end fixed to the lower end of the base plate. The spring is in a stretched state. Slider blocks are provided on both sides of the sandbox, and a sliding groove is provided on the side wall at the upper end of the cavity. The sliders are located in the sliding groove, allowing the sandbox to move up and down within the sliding groove. In the event of a fire, the fire door will heat up. Since the limiting block is made of a metal with a low melting point, such as tin, which has a melting point of only around 200 degrees Celsius, it will melt when the temperature exceeds its melting point, causing the sandbox to fall and block the ventilation window, thus preventing smoke from passing through. However, since the temperature does not immediately reach over 200 degrees Celsius during a fire, a large amount of smoke will enter through the ventilation window and the fire door, posing a safety problem. Therefore, there is an urgent need for a steel fire door that can prevent toxic gases from passing through the fire door in the event of a fire. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a steel fire door that can prevent toxic gases from passing through the fire door in time during a fire.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a steel fire door, comprising:

[0005] Door frame;

[0006] The door plate is hinged to the door frame by a hinge, one side of the hinge is fixed to the side of the door plate, and the other side is fixed to the door frame. The door plate is provided with a ventilation opening and a groove, and the door plate is provided with a cavity. The ventilation opening is communicated with the cavity;

[0007] The first sealing block is movably connected in the cavity along the X direction or the reverse direction of the X direction. The first sealing block is located on the side opposite to the ventilation opening in the X direction. The side of the first sealing block close to the ventilation opening is provided with a rectangular sealing groove. The rectangular sealing groove is provided with a first sealing ring.

[0008] The second sealing block is movably connected in the cavity along the X direction or the reverse direction of the X direction. The second sealing block is located on the side of the ventilation opening in the X direction.

[0009] The smoke sensor is connected to the door plate.

[0010] The controller is connected in the groove, and the smoke sensor is electrically connected with the controller.

[0011] The driving mechanism is used to drive the first sealing block and the second sealing block to move. The driving mechanism includes a bidirectional screw shaft, a driving motor, a first bevel gear and a second bevel gear. The bidirectional screw shaft is connected in the cavity. The bidirectional screw shaft is located above the ventilation opening. The first sealing block and the second sealing block are respectively slidably connected with the bidirectional screw shaft. The first bevel gear is located in the groove. The first bevel gear is coaxially connected with the transmission of the bidirectional screw shaft. The driving motor is connected in the groove. The second bevel gear is coaxially connected with the output shaft of the driving motor. The second bevel gear is engaged with the first bevel gear. The controller is electrically connected with the driving motor.

[0012] The driving mechanism drives the first sealing block and the second sealing block to switch between the first state and the second state.

[0013] In the first state, the first sealing ring of the first sealing block abuts against the second sealing block. The first sealing block and the second sealing block close the ventilation opening.

[0014] In the second state, the first sealing ring of the first sealing block is away from the second sealing block. The ventilation opening is opened.

[0015] Further, the groove movably hinged has an access door.

[0016] Further, the inner wall of the ventilation opening is provided with a second sealing ring.

[0017] Further, the bottom of the cavity is provided with a guide rail. The first sealing block and the second sealing block are slidably connected with the guide rail.

[0018] Further, the door plate is provided with a handle. The handle is L-shaped. The door frame is provided with a rotating shaft. The rotating shaft is provided with a limiting rod. The limiting rod abuts against the handle.

[0019] Further, the top limiting switch in the cavity is located above the ventilation opening.

[0020] The utility model discloses the beneficial effect lies in: compared with the prior art, through setting up smoke transducer, controller, first plugging block, second plugging block and drive mechanism, can detect the first time of smoke, drive mechanism drives first plugging block and second plugging block to close ventilation opening, prevent toxic gas from passing through fireproof door. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of a steel fireproof door of the embodiment of the utility model;

[0022] Figure 2 It is a rear view of a steel fireproof door of the embodiment of the utility model;

[0023] Figure 3 It is a plan view of a steel fireproof door of the embodiment of the utility model;

[0024] Figure 4 It is Figure 3 A towards sectional view of the;

[0025] Figure 5 It is a front view of a steel fireproof door of the embodiment of the utility model;

[0026] Figure 6 It is Figure 5 B towards sectional view of the.

[0027] REFERENCE SIGNS

[0028] 1, door frame;11, pivot;12, limiting rod;

[0029] 2, door panel;21, ventilation opening;22, recess;23, cavity;231, guide rail;232, limiting switch;24, handle;

[0030] 3, hinge;

[0031] 4, first plugging block;41, first sealing ring;

[0032] 5, second plugging block;

[0033] 6, smoke transducer;

[0034] 7, drive mechanism;71, bidirectional screw shaft;72, first bevel gear;73, second bevel gear;74, drive motor;

[0035] 8, access door;

[0036] 9, second sealing ring;

[0037] 10. Controller. DETAILED DESCRIPTION

[0038] To illustrate the technical content of the present application, the purposes and effects achieved, the following will be described in conjunction with the embodiments and the accompanying drawings.

[0039] Please refer to Figures 1 to 6 A steel fireproof door, comprising:

[0040] A door frame 1;

[0041] A door panel 2, the door panel 2 is hinged to the door frame 1 through a hinge 3, one side of the hinge 3 is fixed on the side edge of the door panel 2, and the other side is fixed on the door frame 1, the door panel 2 is provided with a ventilation opening 21 and a groove 22, and the door panel 2 is provided with a cavity 23, and the ventilation opening 21 is communicated with the cavity 23;

[0042] A first blocking block 4, the first blocking block 4 is movably connected in the cavity 23 along the X direction or the reverse direction of the X direction, the first blocking block 4 is located on the reverse side of the X direction of the ventilation opening 21, and a rectangular sealing groove is arranged on the side of the first blocking block 4 close to the ventilation opening 21, and a first sealing ring 41 is arranged in the rectangular sealing groove;

[0043] A second blocking block 5, the second blocking block 5 is movably connected in the cavity 23 along the X direction or the reverse direction of the X direction, and the second blocking block 5 is located on the X direction side of the ventilation opening 21;

[0044] A smoke sensor 6, the smoke sensor 6 is connected to the door panel 2;

[0045] A controller 10, the controller 10 is connected in the groove 22, and the smoke sensor 6 is electrically connected with the controller 10.

[0046] A driving mechanism 7, the driving mechanism 7 is used for driving the first blocking block 4 and the second blocking block 5 to move, the driving mechanism 7 comprises a bidirectional screw shaft 71, a driving motor 74, a first bevel gear 72 and a second bevel gear 73, the bidirectional screw shaft 71 is connected in the cavity 23, the bidirectional screw shaft 71 is located above the ventilation opening 21, the first blocking block 4 and the second blocking block 5 are respectively slidably connected with the bidirectional screw shaft 71, the first bevel gear 72 is located in the groove 22, the first bevel gear 72 is coaxially connected to the transmission of the bidirectional screw shaft 71, the driving motor 74 is connected in the groove 22, the second bevel gear 73 is coaxially connected to the output shaft of the driving motor 74, the second bevel gear 73 is engaged with the first bevel gear 72, and the controller 10 is electrically connected with the driving motor 74.

[0047] The driving mechanism 7 drives the first blocking block 4 and the second blocking block 5 to switch between the first state and the second state;

[0048] The first state, the first sealing ring 41 of the first blocking block 4 abuts against the second blocking block 5, and the first blocking block 4 and the second blocking block 5 close the ventilation opening 21.

[0049] The second state, the first sealing ring 41 of the first blocking block 4 is away from the second blocking block 5, and the ventilation opening 21 is opened.

[0050] In the above embodiment, the controller 10 has a self-contained power supply, the controller 10 controls the driving motor 74 through the bridge motor driving module (such as L298N), the forward and reverse rotation of the driving motor 74 is controlled by two-way signals (such as IN1 and IN2) output by the controller 10, and the rotating direction of the bidirectional lead screw shaft 71 is switched. The controller 10 outputs a high-level signal to the driving motor 74 through the output end, and when the smoke sensor 6 detects smoke during a fire, the controller 10 controls the driving motor 74 to rotate forward, so that the first blocking block 4 and the second blocking block 5 move towards the ventilation opening 21, and the first sealing ring 41 of the first blocking block 4 abuts against the second blocking block 5, thereby closing the ventilation opening 21, preventing toxic gas from passing through the fireproof door, and at the same time, the first sealing ring 41 can also prevent the gap between the first blocking block 4 and the second blocking block 5 from passing through. After the fire is over, the driving motor 74 is reversed manually to open the ventilation opening 21. Compared with the prior art, by setting the smoke sensor 6, the controller 10 and the driving mechanism 7, the ventilation opening 21 can be closed in the first time when smoke is detected, and the toxic gas is prevented from passing through the fireproof door.

[0051] As an optional embodiment, the recess 22 is movably hinged with an access door 8.

[0052] In the above embodiment, the controller 10 and the driving motor 74 can be maintained and repaired by setting the access door 8, thereby facilitating the normal operation of the first blocking block 4 and the second blocking block 5.

[0053] As an optional embodiment, the inner wall of the ventilation opening 21 is provided with a second sealing ring 9.

[0054] In the above embodiment, in the first state, the toxic gas can be prevented from passing through the gap between the ventilation opening 21 and the first blocking block 4 and the second blocking block 5.

[0055] As an optional embodiment, the bottom of the cavity 23 is provided with a guide rail 231, and the first blocking block 4 and the second blocking block 5 are slidably connected with the guide rail 231.

[0056] In the above embodiment, by setting the guide rail 231, the first blocking block 4 and the second blocking block 5 can be stably moved.

[0057] As an optional implementation, the door plate 2 is provided with a handle 24, the handle 24 is in the shape of L, the door frame 1 is provided with a rotating shaft 11, the rotating shaft 11 is provided with a limiting rod 12, and the limiting rod 12 is abutted on the handle 24.

[0058] In the above implementation, the fireproof door needs to be kept in the closed state in the daily use, the handle 24 is arranged on the door, the rotating shaft 11 is rotated, the limiting rod 12 is abutted on the handle 24, and the closed state of the fireproof door is ensured.

[0059] As an optional implementation, the top limiting switch 232 in the cavity 23 is located above the ventilation opening 21.

[0060] In the above implementation, when the first blocking block 4 touches the limiting switch 232, the limiting switch 232 gives a signal to the controller 10, the controller 10 controls the driving motor 74 to stop, the driving motor 74 is protected, and the locked-rotor is avoided.

[0061] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent transformation, direct or indirect application in the related technical field by using the content of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. A steel fire door, characterised in that, The utility model relates to a smoke exhaust door, including: Door frame; Door plate, door plate is hinged with door frame through hinge, one side of hinge is fixed on the side of door plate, the other side is fixed on door frame, and the door plate is equipped with ventilation opening and recess, and the door plate is equipped with cavity, and ventilation opening communicates with cavity; First blocking piece, first blocking piece is movably connected in cavity along X direction or reverse direction of X direction, first blocking piece is located on the reverse side of X direction of ventilation opening, and the side of first blocking piece close to ventilation opening is equipped with rectangular sealing groove, and first sealing ring is arranged in rectangular sealing ring; Second blocking piece, second blocking piece is movably connected in cavity along X direction or reverse direction of X direction, and second blocking piece is located on the side of X direction of ventilation opening; Smoke sensor, smoke sensor is connected on door plate; Controller, controller is connected in recess, and smoke sensor is electrically connected with controller; Driving mechanism, driving mechanism is used for driving first blocking piece and second blocking piece to move, and driving mechanism includes bidirectional screw shaft, drive motor, first bevel gear and second bevel gear, bidirectional screw shaft is connected in cavity, and bidirectional screw shaft is located above ventilation opening, first blocking piece and second blocking piece are slidably connected with bidirectional screw shaft respectively, first bevel gear is located in recess, first bevel gear is coaxially connected on transmission of bidirectional screw shaft, drive motor is connected in recess, second bevel gear is coaxially connected on the output shaft of drive motor, second bevel gear is engaged with first bevel gear, and controller is electrically connected with drive motor; Driving mechanism, driving mechanism drives first blocking piece and second blocking piece to switch in first state and second state; First state, first sealing ring of first blocking piece is abutted to second blocking piece, and first blocking piece and second blocking piece close ventilation opening; Second state, first sealing ring of first blocking piece is away from second blocking piece, and ventilation opening is opened.

2. The steel fire door of claim 1, wherein Recess is movably hinged with access door.

3. The steel fire door of claim 1, wherein The inner wall of ventilation opening is equipped with second sealing ring.

4. The steel fire door of claim 1, wherein The bottom of cavity is equipped with guide rail, and first blocking piece and second blocking piece are slidably connected with guide rail.

5. The steel fire door of claim 1, wherein Door plate is equipped with handle, and the shape of handle is L-shaped, door frame is equipped with rotating shaft, and limiting rod is arranged on rotating shaft, and limiting rod is abutted to handle.

6. The steel fire door of claim 1, wherein, The top limit switch in cavity, and limit switch is located above ventilation opening.

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