Peripheral sealing structure of fireproof door

Abstract

The utility model discloses a fireproof door periphery sealing structure which comprises a door body, a fire insulation plate is fixed on the front surface of the door body, a first sealing mechanism is arranged in front of the door body and located on the outer side wall of the fire insulation plate, the first sealing mechanism comprises a rectangular frame and a first sealing ring, a second sealing mechanism is arranged in the rectangular frame, and the first sealing ring is connected with the second sealing mechanism. The second sealing mechanism comprises an extrusion frame and a second sealing ring, and a third sealing mechanism is arranged in the door body. According to the peripheral sealing structure of the fireproof door, by arranging the first sealing mechanism and the second sealing mechanism, after the door is closed, a door frame extrudes a rectangular frame to move, and a first spring pushes the rectangular frame, so that a first sealing ring and the door frame are in closer contact, the door frame extrudes the rectangular frame to move, the rectangular frame moves to enable a pressing rod to make contact with a groove, and then the groove pushes the pressing rod to move; the pressing rod pushes the extrusion frame to move, the extrusion frame extrudes the second sealing ring, and the second sealing ring expands outwards and makes close contact with the inner side wall of the groove.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a fire door peripheral sealing structure. Background Art

[0002] Common fire doors are divided into normally open fire doors and normally closed fire doors. Normally closed fire doors are used in places with fewer people such as equipment rooms and pump rooms.

[0003] After searching, the existing patent (publication number: CN113338780B) discloses a steel fire door with controllable seal expansion, including a No. 1 side clamping door, a No. 2 side clamping door is arranged on one side of the No. 1 side clamping door, and a sealing structure is arranged at the outer edge between the No. 1 side clamping door and the No. 2 side clamping door. The steel fire door with controllable seal expansion, through the setting of the sealing structure, when encountering a fire, through the alarm system, when the personnel are outside the safety exit door, the expansion gas pump is controlled to convey gas to the inside of the internal expansion air cavity, so that the expansion seal ring is expanded, so that the gap between the No. 1 side clamping door and the door frame is sealed, thereby achieving sealing to prevent the smoke from the fire from floating out, and at the same time, it can prevent the No. 1 side clamping door and the No. 2 side clamping door from increasing the stability, providing support for the No. 1 side clamping door and the No. 2 side clamping door, and can play a role in preventing the No. 1 side clamping door and the No. 2 side clamping door from tipping over.

[0004] The expansion seal ring is expanded to seal the gap between the No. 1 side clamping door and the door frame, thereby achieving sealing. However, it has a disadvantage that air is supplied through an expansion air pump, which also requires energy supply. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a fire door perimeter sealing structure, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a fire door peripheral sealing structure, including a door body, a fire isolation board is fixed on the front surface of the door body, a first sealing mechanism is provided on the outer side wall of the door body in front of the fire isolation board, the first sealing mechanism includes a rectangular frame and a first sealing ring, a second sealing mechanism is provided inside the rectangular frame, the second sealing mechanism includes an extrusion frame and a second sealing ring, a third sealing mechanism is provided inside the door body, the third sealing mechanism includes a third sealing ring, a plurality of piston blocks and a plurality of fixed cylinders.

[0007] Preferably, a groove is provided on the outer wall of the fire partition board on the front surface of the door body, the rectangular frame is located inside the groove, a plurality of first springs are fixed inside the groove, the other end of the first spring is fixedly connected to the rear surface of the rectangular frame, and the front surface of the rectangular frame is fixedly connected to the rear surface of the first sealing ring.

[0008] Preferably, the inner wall of the rectangular frame is provided with an annular opening, the inner rear surface of the annular opening is provided with an annular groove, the second sealing ring is located inside the annular opening, and the annular opening and the extrusion frame are located inside the annular groove.

[0009] Preferably, a plurality of pressure rods are slidably connected inside the rectangular frame, the rear surface of the extrusion frame and the rear surface of the pressure rods are fixedly connected, and a second spring is sleeved on the outer side of the pressure rods, and the second spring is located inside the annular groove.

[0010] Preferably, an annular air groove is formed on the outer side wall of the door body, and the front and rear surfaces of the third sealing ring are fixedly connected to the inner front and rear surfaces of the annular air groove respectively.

[0011] Preferably, the inner rear end of the fixed cylinder and the inner rear surface of the groove are fixedly connected, the inner side wall of the fixed cylinder and the outer side wall of the piston block are slidably connected, the front end of the piston block and the rear surface of the rectangular frame are fixedly connected, and a plurality of air holes are provided between the annular air groove and the groove.

[0012] Beneficial Effects

[0013] The utility model provides a fire door perimeter sealing structure. Compared with the prior art, it has the following advantages:

[0014] Beneficial effects:

[0015] 1. The fire door peripheral sealing structure is provided with a first sealing mechanism and a second sealing process. After the door is closed, the door frame squeezes the rectangular frame to move, and the first spring pushes the rectangular frame, so that the first sealing ring and the door frame are in closer contact. The door frame squeezes the rectangular frame to move, and the rectangular frame moves to make the pressure rod and the groove contact, then the groove pushes the pressure rod to move, and the pressure rod pushes the squeezing frame to move, and the squeezing frame squeezes the second sealing ring, and the second sealing ring expands outward and is in close contact with the inner wall of the groove, thereby preventing smoke and dust from passing through the inside of the groove.

[0016] 2. The fire door peripheral sealing structure is provided with a third sealing ring. When the rectangular frame moves, it will move with the piston block. The piston block moves to squeeze the air inside the fixed cylinder. The air inside the fixed cylinder enters the annular air groove through the air hole and then squeezes the third sealing ring, so that the third sealing ring and the door frame fit more closely, thereby increasing the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the right side of the utility model;

[0019] Figure 3 For this utility model Figure 2 The structural diagram at A in the middle;

[0020] Figure 4 It is a cross-sectional structural schematic diagram of the middle part of the utility model;

[0021] Figure 5 For this utility model Figure 4 The structural diagram at B in the middle;

[0022] Figure 6 It is a side view structural schematic diagram of the rectangular frame in the utility model.

[0023] In the figure: 1, fire partition; 2, first sealing ring; 3, rectangular frame; 4, door body; 5, third sealing ring; 6, piston block; 7, fixing cylinder; 8, annular air groove; 9, air hole; 10, third sealing mechanism; 11, annular groove; 12, extrusion frame; 13, annular mouth; 14, second sealing ring; 15, second spring; 16, pressure rod; 17, groove; 18, second sealing mechanism; 19, first spring; 20, first sealing mechanism. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-6The utility model provides a technical solution: a fire door peripheral sealing structure, including a door body 4, a fire partition board 1 is fixed on the front surface of the door body 4, a first sealing mechanism 20 is provided on the outer side wall of the fire partition board 1 in front of the door body 4, the first sealing mechanism 20 includes a rectangular frame 3 and a first sealing ring 2, a second sealing mechanism 18 is provided inside the rectangular frame 3, the second sealing mechanism 18 includes an extrusion frame 12 and a second sealing ring 14, a third sealing mechanism 10 is provided inside the door body 4, the third sealing mechanism 10 includes a third sealing ring 5, a plurality of piston blocks 6 and a plurality of fixed cylinders 7, a groove 17 is provided on the front surface of the door body 4 on the outer side wall of the fire partition board 1, the rectangular frame 3 is located inside the groove 17, a plurality of first springs 19 are fixed inside the groove 17, the other end of the first spring 19 is fixedly connected to the rear surface of the rectangular frame 3, the front surface of the rectangular frame 3 is fixedly connected to the rear surface of the first sealing ring 2, and the inner side wall of the rectangular frame 3 is provided with an annular The annular opening 13 is provided with an annular groove 11 on the inner rear surface of the annular opening 13, the second sealing ring 14 is located inside the annular opening 13, the annular opening 13, the extrusion frame 12 is located inside the annular groove 11, a plurality of pressure rods 16 are slidably connected inside the rectangular frame 3, the rear surface of the extrusion frame 12 is fixedly connected to the rear surface of the pressure rod 16, the outer side of the pressure rod 16 is sleeved with a second spring 15, the second spring 15 is located inside the annular groove 11, after closing the door, the door frame squeezes the rectangular frame 3 to move, the first spring 19 pushes the rectangular frame 3, so that the first sealing ring 2 and the door frame are in closer contact, the door frame squeezes the rectangular frame 3 to move, the rectangular frame 3 moves to make the pressure rod 16 contact with the groove 17, then the groove 17 pushes the pressure rod 16 to move, the pressure rod 16 pushes the extrusion frame 12 to move, the extrusion frame 12 squeezes the second sealing ring 14, the second sealing ring 14 expands outward and is in close contact with the inner side wall of the groove 17, so as to prevent smoke and dust from passing through the inside of the groove 17.

[0026] Furthermore, an annular air groove 8 is provided on the outer wall of the door body 4, the front and rear surfaces of the third sealing ring 5 are fixedly connected to the inner front and rear surfaces of the annular air groove 8 respectively, the inner rear end of the fixed cylinder 7 is fixedly connected to the inner rear surface of the groove 17, the inner side wall of the fixed cylinder 7 is slidingly connected to the outer wall of the piston block 6, the front end of the piston block 6 is fixedly connected to the rear surface of the rectangular frame 3, and a plurality of air holes 9 are provided between the annular air groove 8 and the groove 17. When the rectangular frame 3 moves, it will move with the piston block 6, and the piston block 6 moves to squeeze the air inside the fixed cylinder 7. The air inside the fixed cylinder 7 enters the annular air groove 8 through the air holes 9, and then squeezes the third sealing ring 5, so that the third sealing ring 5 and the door frame fit more closely, thereby increasing the sealing performance.

[0027] During operation, after the door is closed, the door frame squeezes the rectangular frame 3 to move, and the first spring 19 pushes the rectangular frame 3, so that the first sealing ring 2 and the door frame are in closer contact, and the door frame squeezes the rectangular frame 3 to move, and the rectangular frame 3 moves to make the pressure rod 16 contact with the groove 17, and then the groove 17 pushes the pressure rod 16 to move, and the pressure rod 16 pushes the squeezing frame 12 to move, and the squeezing frame 12 squeezes the second sealing ring 14, and the second sealing ring 14 expands outward and is in close contact with the inner wall of the groove 17, so as to prevent smoke and dust from passing through the inside of the groove 17, and when the rectangular frame 3 moves, it will move with the piston block 6, and the piston block 6 moves to squeeze the air inside the fixed cylinder 7, and the air inside the fixed cylinder 7 enters the inside of the annular air groove 8 through the air hole 9, and then squeezes the third sealing ring 5, so that the third sealing ring 5 and the door frame fit more closely, thereby increasing the sealing performance.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire door perimeter sealing structure, comprising a door body (4), characterized in that: A fireproof plate (1) is fixed on the front surface of the door body (4); a first sealing mechanism (20) is provided on the outer side wall of the fireproof plate (1) in front of the door body (4); the first sealing mechanism (20) includes a rectangular frame (3) and a first sealing ring (2); a second sealing mechanism (18) is provided inside the rectangular frame (3); the second sealing mechanism (18) includes an extrusion frame (12) and a second sealing ring (14); a third sealing mechanism (10) is provided inside the door body (4); the third sealing mechanism (10) includes a third sealing ring (5), a plurality of piston blocks (6) and a plurality of fixed cylinders (7).

2. A fire door perimeter sealing structure according to claim 1, characterized in that: The front surface of the door body (4) is located on the outer wall of the fire partition board (1) and is provided with a groove (17); the rectangular frame (3) is located inside the groove (17); a plurality of first springs (19) are fixed inside the groove (17); the other end of the first spring (19) is fixedly connected to the rear surface of the rectangular frame (3); the front surface of the rectangular frame (3) is fixedly connected to the rear surface of the first sealing ring (2).

3. A fire door perimeter sealing structure according to claim 2, characterized in that: The inner side wall of the rectangular frame (3) is provided with an annular opening (13), the inner rear surface of the annular opening (13) is provided with an annular groove (11), the second sealing ring (14) is located inside the annular opening (13), and the annular opening (13) and the extrusion frame (12) are located inside the annular groove (11).

4. A fire door perimeter sealing structure according to claim 3, characterized in that: A plurality of pressure rods (16) are slidably connected inside the rectangular frame (3); the rear surface of the extrusion frame (12) and the rear surface of the pressure rods (16) are fixedly connected; a second spring (15) is sleeved on the outer side of the pressure rods (16); and the second spring (15) is located inside the annular groove (11).

5. A fire door perimeter sealing structure according to claim 4, characterized in that: An annular air groove (8) is provided on the outer side wall of the door body (4), and the front and rear surfaces of the third sealing ring (5) are fixedly connected to the inner front and rear surfaces of the annular air groove (8) respectively.

6. A fire door perimeter sealing structure according to claim 5, characterized in that: The inner rear end of the fixed cylinder (7) is fixedly connected to the inner rear surface of the groove (17), the inner side wall of the fixed cylinder (7) is slidably connected to the outer side wall of the piston block (6), the front end of the piston block (6) is fixedly connected to the rear surface of the rectangular frame (3), and a plurality of air holes (9) are provided between the annular air groove (8) and the groove (17).

Images