A strong and highly insulated steel fire door

Abstract

The utility model discloses a sturdy steel fireproof door with high heat insulation performance, and relates to the technical field of fireproof doors, comprising a door frame, a door leaf hinged in the door frame, a sealing frame in the shape of a U-shaped block is fixed to the rear end outer wall of the door frame, a sealing groove is arranged on the inner wall of the sealing frame, a sealing strip in the shape of a U-shaped block is fixed at the edge of the rear end inner wall of the door leaf, the sealing strip and the sealing groove are located in the same vertical plane, arc-shaped redundant sections are arranged at the four corners of the sealing strip, an abutment rod is slidably connected to the rear end outer wall of the door leaf, the abutment rod abuts against the inner concave part of the redundant section, an adjusting disk is fixed to the rear end outer wall of the door leaf, the rear end surface of the adjusting disk is rotatably connected with the adjusting rod, and the adjusting rod drives the abutment rod and the redundant section to move toward the corner of the sealing groove; in the utility model, the sealing strip and the redundant section are moved into the sealing groove to seal the gap at the connection between the door frame and the door leaf, so as to effectively prevent smoke from spreading from one side of the door leaf to the other side during a fire, and protect people's safety.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a strong steel fireproof door with high heat insulation. Background Art

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. They are fireproof partitions with a certain degree of fire resistance, installed between fire compartments, evacuation stairwells, vertical shafts, etc. In addition to the functions of ordinary doors, fire doors can also prevent the spread of fire. They can prevent the spread of fire within a certain period of time and ensure the evacuation of personnel.

[0003] At present, my country's civil high-rise building management method rigidly requires the use of fire doors, but most of the strong and highly insulated steel fire doors on the market do not have smoke-proof functions, and even if they have smoke-proof functions, the smoke-proof effect is not very good. Such a structure can prevent the spread of fire in the event of a fire, but it cannot prevent the large amount of thick smoke generated by the fire. Therefore, the research of fire doors with good smoke-proof effects has become an urgent problem to be solved.

[0004] In view of this, this application is hereby filed. Utility Model Content

[0005] The utility model aims to provide a strong and highly heat-insulating steel fireproof door to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model provides a sturdy, highly thermally insulating steel fireproof door, including a door frame, a door leaf hinged in the door frame, a U-shaped blocking frame is fixed to the rear end outer wall of the door frame, the inner wall of the blocking frame is provided with a blocking groove, a U-shaped blocking strip is fixed at the edge of the rear end inner wall of the door leaf, the blocking strip and the blocking groove are located in the same vertical plane, and arc-shaped redundant sections are provided at the four corners of the blocking strip, the rear end outer wall of the door leaf is slidably connected with an abutment rod, the abutment rod abuts against the inner recess of the redundant section, an adjusting disk is fixed to the rear end outer wall of the door leaf, the rear end surface of the adjusting disk is rotatably connected with an adjusting rod, and the adjusting rod drives the abutment rod and the redundant section to move toward the corner of the blocking groove.

[0007] Furthermore, a storage groove is provided inside the adjustment disk, one end of the adjustment rod passes through the rear end outer wall of the adjustment disk and extends into the storage groove, four evenly distributed arc blocks are fixed on the outer wall of the adjustment disk, and the arc outer walls of the arc blocks abut against the abutment rod.

[0008] Furthermore, one end of the abutment rod away from the sealing strip passes through and extends into the adjustment disk, the abutment rod is slidably connected to the adjustment disk, and two limit blocks are fixed to the outer wall of the adjustment disk, and the two limit blocks clamp the abutment rod and are slidably connected thereto.

[0009] Furthermore, a plurality of equidistantly arranged flexible metal plates are provided in the redundant section. When the flexible metal plate moves into the blocking groove, the end surface of the flexible metal plate facing the abutting rod changes from an inward concave shape to an outward convex shape, and the flexible metal plate is resistant to high temperatures.

[0010] Furthermore, the thickness of the redundant section along the length direction of the door leaf is greater than the thickness of the blocking groove, the redundant section and the blocking groove are interference fit, and the redundant section blocks the gap at the connection between the door frame and the door leaf.

[0011] Furthermore, a traction ring is provided on the outer wall of the redundant section, and the sealing strip is made of high temperature resistant rubber material.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the device has a simple structure and is easy to operate. By rotating the adjusting rod, the abutment rod drives the sealing strip and the redundant section to move into the sealing groove, thereby sealing the gap at the connection between the door frame and the door leaf, effectively preventing smoke from spreading from one side of the door leaf to the other side during a fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional diagram of a strong, highly insulated steel fire door;

[0014] Figure 2 A front view of the rear end outer wall of a sturdy, highly insulated steel fire door;

[0015] Figure 3 The present invention is a schematic diagram of the structure of the connection between the arc block and the abutment rod in a sturdy and highly heat-insulating steel fire door;

[0016] Figure 4 Schematic diagram of the structure of the connection between the redundant section and the flexible metal panel in a sturdy and highly insulated steel fire door.

[0017] In the figure:

[0018] 10. Door frame;

[0019] 20. Sealing frame; 21. Sealing groove;

[0020] 30. Door leaf;

[0021] 40. blocking strip; 41. redundant section; 42. flexible metal plate;

[0022] 50. Adjustment rod; 51. Adjustment plate; 52. Storage slot; 53. Arc block;

[0023] 60. Abutment rod; 61. Limit block. 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 1-4 , the utility model provides a technical solution:

[0026] See also Figure 1-4 As shown, a sturdy steel fireproof door with high heat insulation performance comprises a door frame 10, a door leaf 30 is hinged in the door frame 10, a U-shaped blocking frame 20 is fixed to the outer wall at the rear end of the door frame 10, a blocking groove 21 is arranged on the inner wall of the blocking frame 20, a U-shaped blocking strip 40 is fixed to the edge of the inner wall at the rear end of the door leaf 30, the blocking strip 40 and the blocking groove 21 are located in the same vertical plane, arc-shaped redundant sections 41 are arranged at the four corners of the blocking strip 40, an abutting rod 60 is slidably connected to the outer wall at the rear end of the door leaf 30, the abutting rod 60 abuts against the inner concave part of the redundant section 41, and the thickness of the redundant section 41 along the length direction of the door leaf 30 is greater than that of the blocking groove 21. 1, the redundant section 41 is interference fit with the blocking groove 21, the redundant section 41 blocks the gap at the connection between the door frame 10 and the door leaf 30, an adjusting disk 51 is fixed to the rear end outer wall of the door leaf 30, the rear end surface of the adjusting disk 51 is rotatably connected with an adjusting rod 50, the adjusting rod 50 drives the abutting rod 60 and the redundant section 41 to move toward the corner of the blocking groove 21, a plurality of equidistantly arranged flexible metal plates 42 are provided in the redundant section 41, when the flexible metal plate 42 moves into the blocking groove 21, the end surface of the flexible metal plate 42 facing the abutting rod 60 changes from an inner concave type to an outer convex type, the flexible metal plate 42 is high temperature resistant, the flexible metal plate 42 is Inconel 625 alloy, a solid solution strengthened nickel-based deformable high temperature alloy with molybdenum and niobium as main strengthening elements.

[0027] See also Figure 1-4 As shown, a sturdy steel fireproof door with high thermal insulation performance is provided with a storage groove 52 inside the adjusting disk 51, one end of the adjusting rod 50 passes through the outer wall of the rear end of the adjusting disk 51 and extends into the storage groove 52, and four evenly distributed arc blocks 53 are fixed to the outer wall of the adjusting disk 51, and the arc outer wall of the arc block 53 abuts against the abutment rod 60; one end of the abutment rod 60 away from the blocking strip 40 passes through and extends into the adjusting disk 51, and the abutment rod 60 is slidably connected to the adjusting disk 51, and two limit blocks 61 are fixed to the outer wall of the adjusting disk 51, and the two limit blocks 61 clamp the abutment rod 60 and are slidably connected thereto; a traction ring is provided on the outer wall of the redundant section 41, and the blocking strip 40 is made of high-temperature resistant rubber material, and the door frame 10, the door leaf 30 and the blocking frame 20 are all made of thermal insulation steel material.

[0028] Working principle: When it is necessary to block the smoke from a fire to the outside of the front end surface of the door leaf 30, rotate the adjusting rod 50, and the arc block 53 is slidably connected with the abutment rod 60 to move it toward the redundant section 41. The redundant section 41 and the flexible metal plate 42 change from a concave shape to a convex shape. The sealing strip 40 and the redundant section 41 block the gap at the connection between the door frame 10 and the door leaf 30 to prevent the smoke from spreading.

Claims

1. A strong, highly insulated steel fireproof door, comprising a door frame (10), a door leaf (30) being hingedly connected to the door frame (10), characterized in that: A U-shaped blocking frame (20) is fixed to the rear end outer wall of the door frame (10), a blocking groove (21) is provided on the inner wall of the blocking frame (20), a U-shaped blocking strip (40) is fixed at the edge of the rear end inner wall of the door leaf (30), the blocking strip (40) and the blocking groove (21) are located in the same vertical plane, arc-shaped redundant sections (41) are provided at the four corners of the blocking strip (40), an abutment rod (60) is slidably connected to the rear end outer wall of the door leaf (30), the abutment rod (60) abuts against the inner concave part of the redundant section (41), an adjustment disk (51) is fixed to the rear end outer wall of the door leaf (30), the rear end surface of the adjustment disk (51) is rotatably connected to the adjustment rod (50), and the adjustment rod (50) drives the abutment rod (60) and the redundant section (41) to move toward the corner of the blocking groove (21).

2. A strong, highly insulated steel fire door as claimed in claim 1, characterized in that: The adjusting disk (51) is provided with a storage groove (52) inside, one end of the adjusting rod (50) penetrates the rear end outer wall of the adjusting disk (51) and extends into the storage groove (52), four evenly distributed arc blocks (53) are fixed to the outer wall of the adjusting disk (51), and the arc outer walls of the arc blocks (53) abut against the abutting rod (60).

3. A strong and highly insulated steel fire door as claimed in claim 1, characterized in that: One end of the abutment rod (60) away from the blocking strip (40) penetrates and extends into the adjusting disk (51), the abutment rod (60) is slidably connected to the adjusting disk (51), and two limit blocks (61) are fixed to the outer wall of the adjusting disk (51), and the two limit blocks (61) clamp the abutment rod (60) and are slidably connected thereto.

4. A strong, highly insulated steel fire door as claimed in claim 1, characterized in that: A plurality of equidistantly arranged flexible metal plates (42) are provided in the redundant section (41); when the flexible metal plate (42) moves into the blocking groove (21), the end surface of the flexible metal plate (42) facing the abutting rod (60) changes from an inwardly concave shape to an outwardly convex shape; and the flexible metal plate is resistant to high temperatures.

5. A strong and highly insulated steel fire door as claimed in claim 1, characterized in that: The thickness of the redundant section (41) along the length direction of the door leaf (30) is greater than the thickness of the blocking groove (21), the redundant section (41) and the blocking groove (21) are interference fit, and the redundant section (41) blocks the gap at the connection between the door frame (10) and the door leaf (30).

6. A strong, highly insulated steel fire door as claimed in claim 1, characterized in that: The outer wall of the redundant section (41) is provided with a traction ring, and the sealing strip (40) is made of high temperature resistant rubber material.

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