Fireproof door with built-in fire-retardant structure

Abstract

The utility model provides a built -in fire -retardant structure's heat -proof fire door belongs to building fire control equipment technical field, include: door frame, fire door, handle, observation window and heat sensitive memory alloy sealing strip, the utility model under the high temperature environment of fire scene, the heat expansion of expanded graphite plate can close the door gap, ceramic fiber blanket melts and absorbs heat, forms high temperature isolation barrier, be equipped with expansion groove in the peripheral edge of the door body of fire door, the inside of expansion groove is filled with hydrated zinc borate flame retardant, and expansion groove is located the outer end at expanded graphite plate, when the expansion groove of the peripheral edge of the door body of fire door is conducted heat from the gap, the heat release water vapor drive expanded graphite plate secondary filling expansion groove when, the heat sensitive memory alloy sealing strip on the door frame is conducted heat from the gap, the heat expansion can fill up the gap between the door frame and fire door, solved the high temperature sealing failure problem of traditional fire door.

Description

Technical Field

[0001] This utility model relates to the field of building fire protection equipment technology, and in particular to a heat-insulating fire door with a built-in flame-retardant structure. Background Technology

[0002] Fire doors are an important component of fire protection equipment. They are components in buildings used to prevent the spread of fire. In addition to the functions of ordinary doors, fire doors also prevent the spread of fire and smoke. They are fire-resistant partitions with a certain degree of fire resistance installed in fire compartments, evacuation stairwells, vertical shafts, etc. They have become an indispensable fire protection configuration in modern buildings and are subject to mandatory application. Fire doors are mandatory in fire passages such as emergency exits, receiving doors, safety doors, and internal passage doors. Existing fire doors made of ordinary steel have high thermal conductivity and are prone to softening and deformation at high temperatures. The high-temperature heat is quickly conducted to the back of the door, threatening internal safety and resulting in poor heat insulation performance. At high temperatures, the door frame melts and deforms due to thermal deformation, causing the seal to fail. In addition, the rubber sealing strip on the door frame will melt at high temperatures, causing the fire door to leak smoke and fire. Therefore, this application provides a heat-insulating fire door with a built-in flame-retardant structure to meet the requirements. Utility Model Content

[0003] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and to propose a heat-insulating fireproof door with a built-in flame-retardant structure.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A heat-insulating fire door with a built-in flame-retardant structure includes: a door frame, a fire door, a handle, an observation window, and a thermosensitive memory alloy sealing strip. A pair of fire doors are installed on the inner side of the door frame via hinges. The fire door is composed of a metal outer plate, a honeycomb aluminum matrix, an expanded graphite plate, and a ceramic fiber blanket. A handle is installed on the fire door. An observation window is installed at the upper middle of the fire door. A thermosensitive memory alloy sealing strip is adhered to the inner side of the door frame.

[0005] Preferably, the fire door is laminated from the outside to the inside with a metal outer panel, a honeycomb aluminum substrate, an expanded graphite plate, and a ceramic fiber blanket.

[0006] Preferably, the honeycomb aluminum substrate, expanded graphite plate, and ceramic fiber blanket are all vertically laminated between the two sets of metal outer plates.

[0007] Preferably, the metal outer plate is a 0.8mm galvanized steel plate, and the surface of the metal outer plate is sprayed with an intumescent fireproof coating with a coating thickness of 0.5mm.

[0008] Preferably, the honeycomb aluminum substrate is filled with silicone flame-retardant gel.

[0009] Preferably, the expanded graphite plate and the ceramic fiber blanket are interlayered by double-layer staggered laying, and the included angle of the layers is 45°.

[0010] Preferably, the fire door has an expansion groove on its outer edge, and the groove is trapezoidal in shape.

[0011] Preferably, the expansion groove is filled with zinc borate hydrate flame retardant, and the expansion groove is located at the outer end of the expanded graphite plate.

[0012] Preferably, the thermosensitive memory alloy sealing strip surrounds the entire inner edge of the door frame.

[0013] Preferably, the thermosensitive memory alloy sealing strip is adhered to the contact surface between the door frame and the fire door.

[0014] Compared with the prior art, this utility model has at least the following beneficial effects:

[0015] In the above scheme, the fire door is constructed by laminating a metal outer panel, a honeycomb aluminum substrate, an expanded graphite board, and a ceramic fiber blanket from the outside in. The outer layer of the fire door is formed by galvanized steel plate and an expanded fireproof coating. The honeycomb cells of the inner layer of the honeycomb aluminum substrate are filled with silicone flame-retardant gel. The expanded graphite board and the ceramic fiber blanket are interlaced with double-layer staggered joints at a 45° angle. The expanded graphite board can block heat radiation. In the high-temperature environment of a fire, the expanded graphite board expands when heated and can seal the door gaps. The ceramic fiber blanket melts and absorbs heat, forming a high-temperature insulation barrier.

[0016] In the above solution, an expansion groove is provided on the outer edge of the fire door. The expansion groove is filled with zinc borate hydrate flame retardant and is located at the outer end of the expanded graphite plate. When the expansion groove on the outer edge of the fire door is subjected to heat conducted from the gap, it releases water vapor and drives the expanded graphite plate to fill the expansion groove a second time. A thermosensitive memory alloy sealing strip is adhered around the contact surface between the door frame and the fire door. When the thermosensitive memory alloy sealing strip adhered to the door frame is subjected to heat conducted from the gap, it expands and can fill the gap between the door frame and the fire door, thus solving the problem of high temperature sealing failure of traditional fire doors. Attached Figure Description

[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the cross-sectional structure of the fire door of this utility model; Figure 3 This is a schematic diagram of the specific connection structure between the door frame and the thermosensitive memory alloy sealing strip of this utility model; Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A.

[0019] [Figure Labels] 1-Door frame; 2-Fire door; 3-Handle; 4-Observation window; 5-Thermosensitive memory alloy sealing strip; 201-Metal outer panel; 202-Honeycomb aluminum substrate; 203-Expanded graphite plate; 204-Ceramic fiber blanket; 205-Expansion groove.

[0020] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4The present invention provides an embodiment of a heat-insulating fire door with a built-in flame-retardant structure, comprising: a door frame 1, a fire door 2, a handle 3, an observation window 4, and a thermosensitive memory alloy sealing strip 5. A pair of fire doors 2 are installed on the inner side of the door frame 1 via hinges. The fire door 2 is composed of a metal outer plate 201, a honeycomb aluminum substrate 202, an expanded graphite plate 203, and a ceramic fiber blanket 204. A handle 3 is installed on the fire door 2. An observation window 4 is installed at the middle of the upper end of the fire door 2. A thermosensitive memory alloy sealing strip 5 is adhered to the inner side of the door frame 1.

[0024] In this embodiment, the fire door 2 is laminated with a metal outer plate 201, a honeycomb aluminum substrate 202, an expanded graphite plate 203 and a ceramic fiber blanket 204 from the outside to the inside.

[0025] In this embodiment, the honeycomb aluminum substrate 202, the expanded graphite plate 203, and the ceramic fiber blanket 204 are all vertically laminated between the two sets of metal outer plates 201.

[0026] In this embodiment, the metal outer plate 201 is a 0.8mm galvanized steel plate, and the surface of the metal outer plate 201 is sprayed with an intumescent fireproof coating with a coating thickness of 0.5mm. The galvanized steel plate and the intumescent fireproof coating constitute the outer protection of the fire door 2.

[0027] In this embodiment, silicone flame-retardant gel is injected into the honeycomb aluminum substrate 202. Injecting flame-retardant gel into the honeycomb aluminum substrate can ensure lightweight while improving flame retardancy.

[0028] In this embodiment, the expanded graphite plate 203 and the ceramic fiber blanket 204 are interlayered and stacked in a double-layer staggered manner with an included angle of 45°. The expanded graphite plate 203 can block heat radiation. In the high-temperature environment of the fire scene, the expanded graphite plate 203 expands when heated and can seal the gaps. The ceramic fiber blanket 204 melts and absorbs heat to form a high-temperature insulation barrier.

[0029] In this embodiment, the outer edge of the fire door 2 is provided with an expansion groove 205, and the groove of the expansion groove 205 is trapezoidal in shape, with the opening of the trapezoidal expansion groove 205 gradually widening.

[0030] In this embodiment, the expansion groove 205 is filled with zinc borate hydrate flame retardant, and the expansion groove 205 is located at the outer end of the expanded graphite plate 203. When the expansion groove 205 on the outer edge of the fire door 2 is heated by heat conducted from the gap, it releases water vapor and drives the expanded graphite plate 203 to fill the expansion groove 205 a second time.

[0031] In this embodiment, the thermosensitive memory alloy sealing strip 5 surrounds the inner edge of the entire door frame 1.

[0032] In this embodiment, the thermosensitive memory alloy sealing strip 5 is adhered to the contact surface between the door frame 1 and the fire door 2. When the thermosensitive memory alloy sealing strip 5 adhered to the door frame 1 is subjected to heat conducted from the gap, it expands due to heat and can fill the gap between the door frame 1 and the fire door 2, thus solving the problem of high temperature sealing failure of traditional fire doors.

[0033] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A heat-insulating fire door with a built-in flame-retardant structure, characterized in that, include: The door frame (1), fire door (2), handle (3), observation window (4) and thermosensitive memory alloy sealing strip (5) are provided. A pair of fire doors (2) are installed on the inner side of the door frame (1) via hinges. The fire door (2) is composed of a metal outer plate (201), a honeycomb aluminum substrate (202), an expanded graphite plate (203) and a ceramic fiber blanket (204). A handle (3) is installed on the fire door (2). An observation window (4) is installed at the middle of the upper end of the fire door (2). The thermosensitive memory alloy sealing strip (5) is adhered to the inner side of the door frame (1).

2. The heat-insulating fire door with a built-in flame-retardant structure according to claim 1, characterized in that: The fire door (2) is laminated from the outside to the inside with a metal outer plate (201), a honeycomb aluminum substrate (202), an expanded graphite plate (203), and a ceramic fiber blanket (204).

3. The heat-insulating fire door with a built-in flame-retardant structure according to claim 1, characterized in that: The honeycomb aluminum substrate (202), expanded graphite plate (203) and ceramic fiber blanket (204) are all vertically laminated between two sets of metal outer plates (201).

4. The heat-insulating fire door with a built-in flame-retardant structure according to claim 1, characterized in that: The metal outer plate (201) is a 0.8mm galvanized steel plate, and the surface of the metal outer plate (201) is sprayed with an intumescent fireproof coating with a coating thickness of 0.5mm.

5. The heat-insulating fire door with a built-in flame-retardant structure according to claim 1, characterized in that: The honeycomb aluminum substrate (202) is filled with silicone flame-retardant gel through its honeycomb pores.

6. The heat-insulating fire door with a built-in flame-retardant structure according to claim 1, characterized in that: The expanded graphite plate (203) and the ceramic fiber blanket (204) are interlayered by double-layer staggered laying, and the overlapping angle is 45°.

7. The heat-insulating fire door with a built-in flame-retardant structure according to claim 1, characterized in that: The fire door (2) has an expansion groove (205) on its outer edge, and the groove of the expansion groove (205) is trapezoidal.

8. The heat-insulating fire door with a built-in flame-retardant structure according to claim 7, characterized in that: The expansion groove (205) is filled with zinc borate hydrate flame retardant, and the expansion groove (205) is located at the outer end of the expanded graphite plate (203).

9. The heat-insulating fire door with a built-in flame-retardant structure according to claim 1, characterized in that: The thermosensitive memory alloy sealing strip (5) surrounds the inner edge of the entire door frame (1).

10. The heat-insulating fire door with a built-in flame-retardant structure according to claim 1, characterized in that: The thermosensitive memory alloy sealing strip (5) is adhered to the contact surface between the door frame (1) and the fire door (2).

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