A sealing structure for a highly flame-retardant fire door

Abstract

The present invention discloses a sealing structure for a highly flame-retardant fireproof door, which comprises: a door frame frame, a door panel is rotatably provided on one side of which, a connecting room panel is fixed on the outer side surface of the door panel, a sealing connection structure is provided in parallel on one side of the door frame frame, and a plurality of modulation components are further provided on the door frame frame, and the modulation components are in contact with the sealing connection mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of fire doors, in particular to a sealing structure of a highly flame-retardant fire door. Background Art

[0002] Usually, fire doors are designed as thick and solid door bodies and are installed in passages within buildings. However, due to the simple design style of such door bodies and the loose connection between the door frame and the fireproof glass, thick smoke spreads when responding to a fire, and the fire and smoke prevention functions cannot be achieved. The sealing effect is poor, and the door leaf and the sealing strip are repeatedly in contact and separation. After long-term use, the sealing strip will cause local deformation and debonding, thereby causing the sealing performance of the fire door to deteriorate. Therefore, those skilled in the art provide a sealing structure for a highly flame-retardant fire door to solve the problems raised in the above background technology. Summary of the Invention

[0003] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sealing structure for a highly flame-retardant fireproof door, comprising: a door frame frame, one side of which is rotatably provided with a door panel, an outer side surface of the door panel is fixed with a connecting room panel, a sealing connection mechanism is arranged parallel to one side of the door frame frame, and a plurality of modulation components are also arranged on the door frame frame, and the modulation components are in contact with the sealing connection mechanism.

[0004] Furthermore, preferably, the sealing connection mechanism includes:

[0005] The inner seal is fixed to the outer surface of the door frame;

[0006] An inner pressure strip is sealed with the inner sealing strip, and the inner pressure strip is fixedly attached to the connecting room board;

[0007] The gap filling component is fixed on the door frame and is located at the connecting gap between the door frame and the door panel. The modulation component contacts and abuts against one side of the gap filling component.

[0008] Furthermore, preferably, the gap filling component includes:

[0009] A fixed frame plate is fixed on the door frame, a sealing frame is fixed on the fixed frame plate, and the cross section of the sealing frame is an inverted []-shaped structure;

[0010] An elastic frame is fixed on the sealing frame in a bilaterally symmetrical manner, and the elastic frame is made of a high elastic-plastic material;

[0011] a rubber pressure pad fixed on each of the elastic frames; and

[0012] An inner frame rod is arranged obliquely in each of the elastic frames, one end of the inner frame rod is hinged to the sealing frame, and the other end is hinged to the elastic frame. An inner support member is also provided in the elastic frame, and the inner support member is in contact with the inner frame rod.

[0013] Furthermore, as a preference, one end face of each rubber pressure pad can correspondingly rest against the door frame and the door panel, a sealing plywood is fixed on the side of the elastic frame away from the rubber pressure pad, a plurality of sealing telescopic members are arranged and fixed on the connecting room panel, one end of the sealing telescopic member is in contact with the sealing plywood, and its contact surface is set to a sloped structure.

[0014] Furthermore, preferably, the cross section of the inner support member is an S-shaped structure, and the outer support inclined surface of the inner support member is supported and pressed against the inner frame rod, and the inner support inclined surface is supported and pressed against the rubber pressure pad.

[0015] Furthermore, preferably, the pitch-shifting component includes:

[0016] A positioning frame is slidably arranged on the door frame, and a plurality of sealed cavities are arranged on the positioning frame, and a plunger is slidably arranged in the sealed cavity;

[0017] A connecting frame is fixed on the sealing connection mechanism on the left and right sides, and the positioning frame plate is slidably connected to the connecting frame;

[0018] A pressure rod is slidably disposed in each of the sealing cavities, one end of the pressure rod being fixed to the plunger;

[0019] An outer spring is sleeved on the pressure rod;

[0020] Airflow grooves are provided on both sides of each of the sealing cavities, and balls are arranged in the airflow grooves via connecting springs.

[0021] Furthermore, preferably, a plurality of connection cavities are arranged in the fixing frame plate of the sealing connection mechanism, and the connection cavities can be ventilatedly connected to the sealing cavity.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The sealing connection mechanism provided in the present invention can achieve a sealed fit at the connection gap between the door panel and the door frame, ensuring fireproof sealing; the gap filling component provided therein can extend the sealing performance and increase the effective service life;

[0024] The modulation component also provided in the present invention can assist the fire door in enhancing the deformation flexibility of the rubber pressure pad in the gap filling component during fire protection use, thereby improving the contact sealing effect. On the other hand, it can position the external air pressure at the disjointed and cured part of the rubber pressure pad to ensure the fire protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 Schematic diagram of the structure of the sealing connection mechanism of the present invention;

[0027] Figure 3 Schematic diagram of the structure of the gap filling component of the present invention;

[0028] Figure 4 Schematic diagram of the structure of the inner support in the present invention;

[0029] Figure 5 Schematic diagram of the structure of the pitch-shifting component in the present invention;

[0030] In the figure: 1. Door panel; 11. Connecting room panel; 2. Door frame; 3. Sealing connection mechanism; 31. Inner seal; 32. Inner pressure strip; 4. Modulation assembly; 41. Positioning frame; 42. Plunger; 43. Ball; 44. Connecting frame; 45. Pressure rod; 5. Gap filling assembly; 51. Fixed frame; 52. Sealing frame; 53. Elastic frame; 54. Rubber pressure pad; 55. Sealing telescopic member; 56. Inner frame rod; 57. Sealing splint; 6. Inner support member; 61. Outer support inclined; 62. Inner support inclined surface. DETAILED DESCRIPTION

[0031] See also Figure 1 In an embodiment of the present invention, a sealing structure of a highly flame-retardant fireproof door includes: a door frame frame 2, one side of which is rotatably provided with a door panel 1, an outer side surface of the door panel 1 is fixed with a connecting room panel 11, a sealing connection mechanism 3 is arranged in parallel on one side of the door frame frame 2, and a plurality of modulation components 4 are further provided on the door frame frame 2, the modulation components 4 are in contact with the sealing connection mechanism 3, wherein the door panel and the door frame frame are locked and fixed using a normal locking structure.

[0032] See Figure 2 In this embodiment, the sealing connection mechanism 3 includes:

[0033] The inner seal 31 is fixed to the outer surface of the door frame 2;

[0034] The inner pressure strip 32 is sealed with the inner sealing strip 31, and the inner pressure strip 32 is fixed to the connecting room board 11;

[0035] The gap filling component 5 is fixed on the door frame frame 2 and is located at the connecting gap between the door frame frame 2 and the door panel 1. The modulation component 4 contacts and rests on one side of the gap filling component 5. That is to say, when the fire door is used for fire protection, the door panel and the door frame are fixed and locked. At this time, the inner pressure strip and the inner sealing strip are pressed together to form a preliminary sealing layer, and the gap filling component can be used to fill the connecting gap between the door panel and the door frame again to form a double sealing layer.

[0036] See Figure 3 As a preferred embodiment, the gap filling component 5 includes:

[0037] A fixed frame plate 51 is fixed to the door frame 2, and a sealing frame 52 is fixed to the fixed frame plate 51. The cross section of the sealing frame 52 is an inverted []-shaped structure;

[0038] The elastic frame 53 is fixed on the sealing frame 52 symmetrically. The elastic frame 53 is made of a highly elastic-plastic material.

[0039] The rubber pressure pad 54 is fixed on each of the elastic frames 53; the rubber pressure pad can be in sealing contact with the door panel and the door frame, and

[0040] The inner frame rod 56 is arranged obliquely in each of the elastic frames 53. One end of the inner frame rod 56 is hinged to the sealing frame 52, and the other end is hinged to the elastic frame 53. An inner support member 6 is also provided in the elastic frame 53. The inner support member 6 is in contact with the inner frame rod 56, and the inner frame rod can form an internal support for the elastic frame.

[0041] In this embodiment, one end face of each rubber pressure pad 54 can correspondingly rest against the door frame frame 2 and the door panel 1, and a sealing plywood 57 is fixed on the side of the elastic frame 53 away from the rubber pressure pad 54, and a plurality of sealing telescopic components 55 are arranged and fixed on the connecting room panel 11, one end of the sealing telescopic component 55 is in contact with the sealing plywood 57, and its contact surface is set to a slope structure, that is, when the door panel and the door frame are fixedly locked, the sealing telescopic component on the connecting room panel can extend into the middle of the elastic frame and form an internal expansion pressure on the elastic frame, wherein the sealing telescopic component adopts a two-stage telescopic structure.

[0042] See Figure 4 In this embodiment, the cross section of the inner support member 6 is an S-shaped structure, and the outer support inclined surface 61 of the inner support member 6 is supported and pressed with the inner frame rod 56, and the inner support inclined surface 62 is supported and pressed with the rubber pressure pad 54. In particular, the S-shaped angles between the outer support inclined surface and the inner support inclined surface on the inner support member are respectively and ,in, The angle is less than 30°, The angle is less than 50°, when the sealing telescopic member gradually extends into the elastic frame, The angle is fine-tuned (smaller) first. At this time, the inner support forms an oblique pressure on the inner support slope, thereby generating an oblique pressure on the rubber pressure pad, improving the sealing contact effect of the rubber pressure pad. After deformation to the minimum value, The angle is fine-tuned (becomes smaller), and at this time, the rubber pressure pad can be gradually pressurized vertically, which fully utilizes the shape of the inner support and the characteristics of angle fine-tuning, and realizes oblique pressurization and vertical pressurization in the sealing connection, thereby improving the sealing contact effect of the rubber pressure pad.

[0043] See Figure 5 In this embodiment, the pitch-shifting component 4 includes:

[0044] A positioning frame 41 is slidably mounted on the door frame 2. A plurality of sealed cavities are arranged on the positioning frame 41. A plunger 42 is slidably mounted in each of the sealed cavities.

[0045] The connecting frame 44 is fixed on the sealing connection mechanism 3 on the left and right sides, and the positioning frame plate 41 is slidably connected to the connecting frame 44;

[0046] A pressure rod 45 is slidably disposed in each of the sealing cavities, and one end of the pressure rod 45 is fixed to the plunger 42;

[0047] An outer spring, sleeved on the pressure rod 45;

[0048] An air flow groove is provided on both sides of each of the sealing cavities. A ball 43 is provided in the air flow groove through a connecting spring. The pressure rod can squeeze and discharge the internal air flow through the air flow groove under manual pressing, and a sealed space is formed under the sealing of the ball.

[0049] As a preferred embodiment, a plurality of connecting cavities are arranged in the fixed frame plate 51 in the sealing connection mechanism 3, and the connecting cavities can be ventilated with the sealing cavity. In particular, the pressure rod can realize the discharge of airflow between the connecting cavity and the sealing cavity under manual pressing, and form a negative pressure fixation under the support of an external spring. This negative pressure can ensure that the sealing telescopic component maintains a stable position during the connection process, and avoids loosening or detachment due to external force or vibration. At this time, the sealing telescopic component gradually extends into the elastic frame and fully expands the rubber pressure pad to both sides, especially for the aging and deformation of the rubber pressure pad colloid to ensure its sealing.

[0050] Specifically, when the fire door is in use, the door panel and the door frame are locked and fixed with a normal locking structure, and the inner pressure strip and the inner sealing strip are pressed together to form a preliminary sealing layer. At this time, the sealing telescopic component connected to the room panel can extend into the middle of the elastic frame and form an internal expansion pressure on the elastic frame, thereby forming a double-layer sealing layer by the rubber pressure pad. In order to avoid aging and deformation of the colloid in the rubber pressure pad during long-term use, which leads to reduced air tightness, the pressure rod in the modulation assembly can be manually pressed down to improve the expansion pressure effect of the sealing telescopic component on the rubber pressure pad, thereby enhancing fire resistance.

[0051] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A sealing structure for a highly flame-retardant fire door, characterized by: It includes: A door frame (2) is rotatably provided on one side of which a door panel (1) is provided. A connecting room panel (11) is fixed on the outer side of the door panel (1). A sealing connection mechanism (3) is provided in parallel on one side of the door frame (2). A plurality of modulation components (4) are further provided on the door frame (2). The modulation components (4) are in contact with the sealing connection mechanism (3). The sealing connection mechanism (3) comprises: An inner sealing strip (31) is fixedly attached to the outer surface of the door frame (2); An inner pressure strip (32) is sealed with the inner sealing strip (31), and the inner pressure strip (32) is fixedly attached to the connecting room board (11); A gap filling component (5) is fixed on the door frame (2) and is located at the connection gap between the door frame (2) and the door panel (1), and the modulation component (4) contacts and abuts against one side of the gap filling component (5); The gap filling component (5) comprises: A fixed frame plate (51) is fixed on the door frame (2), a sealing frame (52) is fixed on the fixed frame plate (51), and the cross section of the sealing frame (52) is an inverted []-shaped structure; An elastic frame (53) is fixed on the sealing frame (52) in a bilaterally symmetrical manner, and the elastic frame (53) is made of a highly elastic-plastic material; A rubber pressure pad (54) is fixed on each of the elastic frames (53); and An inner frame rod (56) is arranged obliquely in each of the elastic frames (53), one end of the inner frame rod (56) is hinged to the sealing frame (52), and the other end is hinged to the elastic frame (53), and an inner support member (6) is also provided in the elastic frame (53), and the inner support member (6) is in abutment with the inner frame rod (56).

2. The sealing structure of a highly flame-retardant fireproof door according to claim 1, characterized in that: One end face of each rubber pressure pad (54) can correspondingly rest against the door frame (2) and the door panel (1); a sealing splint (57) is fixed on the side of the elastic frame (53) away from the rubber pressure pad (54); a plurality of sealing telescopic members (55) are arranged and fixed on the connecting room panel (11); one end of the sealing telescopic member (55) contacts the sealing splint (57), and the contact surface thereof is set as an inclined structure.

3. The sealing structure of a highly flame-retardant fireproof door according to claim 1, characterized in that: The cross section of the inner support member (6) is an S-shaped structure, and the outer support inclined surface (61) of the inner support member (6) is supported and pressed against the inner frame rod (56), and the inner support inclined surface (62) is supported and pressed against the rubber pressure pad (54).

4. The sealing structure of a highly flame-retardant fireproof door according to claim 1, characterized in that: The modulation component (4) comprises: A positioning frame (41) is slidably arranged on the door frame (2), wherein a plurality of sealing cavities are arranged in an array on the positioning frame (41), and a plunger (42) is slidably arranged in the sealing cavity; A connecting frame (44) is fixed on the sealing connection mechanism (3) on the left and right sides, and the positioning frame plate (41) is slidably connected to the connecting frame (44); A pressure rod (45) is slidably disposed in each of the sealing cavities, and one end of the pressure rod (45) is fixed to the plunger (42); An outer spring sleeved on the pressure rod (45); Airflow grooves are provided on both sides of each of the sealing cavities, and balls (43) are provided in the airflow grooves via connecting springs.

5. The sealing structure of a highly flame-retardant fireproof door according to claim 4, characterized in that: A plurality of connection cavities are arranged in the fixed frame plate (51) in the sealing connection mechanism (3), and the connection cavities can be ventilated and connected to the sealing cavity.

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