Fireproof door with good heat insulation effect

By introducing components such as a first heat insulation board, a sound insulation pad, a second heat insulation board, a sealing cover, and a heat-sensitive glass tube into the fire door, the problem of smoke escaping during the opening and closing of the fire door is solved, achieving a better heat insulation effect.

CN223922945UActive Publication Date: 2026-02-17ZHEJIANG ZHENGHE IND & TRADE CO LTD
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Patent Information

Application Number
CN202520506978.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2026-02-17
Estimated Expiration
2035-03-21

AI Technical Summary

Technical Problem

Existing fire doors have gaps between the door frame and the fire door during opening and closing, which allows smoke to escape and reduces the heat insulation effect.

Method used

The design incorporates components such as a first heat insulation board, a sound insulation pad, a second heat insulation board, a sealing cover, a spring, a thermosensitive glass tube, and a sealing strip. It utilizes the bursting of the thermosensitive glass tube at high temperatures to cause the sealing plug to seal the gap, combined with the expansion of the sealing strip to eliminate the gap, thereby enhancing the heat insulation effect.

Benefits of technology

It effectively seals the gap between the door frame and the fire door, improves the heat insulation performance of the fire door, prevents smoke from escaping, and enhances the heat insulation effect of the fire door.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223922945U_ABST
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Abstract

The utility model relates to the technical field of fireproof doors, in particular to a fireproof door with a good heat insulation effect, which comprises a door frame and a fireproof door main body connected through hinges and positioned in the door frame, and a first heat insulation plate, a sound insulation pad and a second heat insulation plate are sequentially arranged in an inner cavity of the fireproof door main body from front to back; the sealing covers are fixedly connected to the front side and the rear side of the inner wall of the fireproof door body, one side of an inner cavity of each sealing cover is fixedly connected with a spring, and one end of each spring is fixedly connected with a sealing plug sliding on the inner side of the corresponding sealing cover. Through the effects of the sealing rubber strip, the positioning clamping groove and the sealing cover, the fireproof door has the advantage of being good in heat insulation effect, and the problems that an existing fireproof door needs to be opened and closed, a certain gap is formed between the fireproof door and the door frame, smoke easily flows out due to the gap, and the fireproof door cannot be opened or closed easily are solved. Therefore, the heat insulation effect of the fireproof door is reduced.
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Description

TECHNICAL FIELD

[0001] The utility model relates to fireproof door technical field, concretely is a fireproof door with good heat insulation effect. BACKGROUND

[0002] Fireproof door refers to the door that can satisfy the requirements of fire resistance stability, integrity and heat insulation for a certain time, it is arranged between fire compartment, evacuation stairwell, vertical shaft and other places, is a fireproof partition with certain fire resistance, has the effect of preventing fire spreading and smoke diffusion, can prevent fire spreading for a certain time and ensure personnel evacuation.

[0003] At present, the existing fireproof door needs to be opened and closed, so that the fireproof door and the door frame have a certain gap, and the existence of the gap is easy to make smoke flow out, thereby reducing the heat insulation effect of the fireproof door, therefore, the fireproof door with good heat insulation effect is provided. UTILITY MODEL CONTENTS

[0004] The utility model discloses a fireproof door with good heat insulation effect, has the advantages of good heat insulation effect, solves the problem that the existing fireproof door needs to be opened and closed, so that the fireproof door and the door frame have a certain gap, and the existence of the gap is easy to make smoke flow out, thereby reducing the heat insulation effect of the fireproof door.

[0005] To achieve the above object, the utility model provides the following technical scheme: a fireproof door with good heat insulation effect, comprising a door frame, further comprising:

[0006] The fireproof door body connected by the hinge and located in the door frame, the inner cavity of the fireproof door body is provided with a first heat insulation plate, a soundproof pad and a second heat insulation plate from front to back;

[0007] The sealing cover fixedly connected to the inner wall of the fireproof door body on the front and back sides, one side of the inner cavity of the sealing cover is fixedly connected with a spring, one end of the spring is fixedly connected with a sealing plug sliding in the inner side of the sealing cover, one end of the inner cavity of the sealing cover away from the sealing plug is provided with a partition, the inner surface of the partition is provided with an internal thread connector, one end of the internal thread connector is threadedly connected with a heat-sensitive glass tube connecting seat;

[0008] The positioning clamping groove is opened on the outer surface of the front and back ends of the fireproof door body, the inner side of the positioning clamping groove is provided with a sealing rubber strip, the inner surface of one end of the sealing rubber strip is provided with an elastic cavity, and the communication pipe is arranged between the elastic cavity and the sealing cover.

[0009] Preferably, the right end of the front surface of the fireproof door body is fixedly installed with a handle, and the outer side of the handle is sleeved with a high-temperature-resistant heat insulation sleeve.

[0010] Preferably, the outer surface of the fireproof door body is coated with a heat insulation layer, and the outer side of the heat insulation layer is coated with a protective layer.

[0011] Preferably, the material of the heat insulation layer is aerogel composite coating, and the material of the protective layer is nano ceramic heat insulation coating.

[0012] Preferably, the material of the first heat insulation plate is aluminum silicate fiber plate, and the material of the second heat insulation plate is rock wool plate.

[0013] Preferably, the material of the sound insulation pad is polyethylene foam sound insulation pad.

[0014] Preferably, the heat-sensitive glass tube in the heat-sensitive glass tube connecting seat is a yellow burst tube.

[0015] Compared with the prior art, the utility model has the beneficial effects as follows:

[0016] 1. The utility model discloses a first heat insulation plate and sound insulation pad and second heat insulation plate are set up, can effectively improve the heat insulation and sound insulation effect of fireproof door body's own inside, through the setting of sealing rubber strip and positioning slot, can effectively reduce the gap between door frame and fireproof door body.

[0017] 2. The utility model discloses when the external fire occurs, along with the temperature of fireproof door body's rise, and sealing cover is sealed and fixed on the inner wall of fireproof door body's two sides, and then the yellow heat-sensitive glass tube in heat-sensitive glass tube connecting seat will burst when the temperature exceeds seventy nine degrees Celsius, and the spring can drive sealing plug to be close to the baffle in sealing cover at this time, and then sealing plug can send the gas in sealing cover to the other side of baffle through internal thread connecting head, and along with the gas pressure of the other side of baffle's increase, its gas can enter the elastic cavity of sealing rubber strip through the communicating pipe, can make sealing rubber strip appear expansion, and then can eliminate the last gap between door frame and fireproof door body, and can block up the gap, effectively avoid the outflow of flue gas, make this fireproof door body have the ability of good heat insulation effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is the sectional structure schematic diagram of the utility model; Figure 1

[0020] Figure 3 It is the explosion structure schematic diagram of the utility model;

[0021] Figure 4 It is the fireproof door body structure schematic diagram of the utility model.

[0022] ​In the figure: 1, door frame; 2, fireproof door main body; 201, handle; 202, high-temperature-resistant heat insulation sleeve; 203, second heat insulation plate; 204, first heat insulation plate; 205, protective layer; 206, sound insulation pad; 207, heat insulation layer; 3, sealing cover; 301, partition plate; 302, sealing plug; 303, spring; 304, internal thread connector; 305, heat-sensitive glass tube connecting seat; 306, positioning clamping groove; 307, sealing rubber strip; 308, elastic cavity; 309, communication pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The door frame 1, the fireproof door body 2, the handle 201, the high-temperature-resistant heat insulation sleeve 202, the second heat insulation plate 203, the first heat insulation plate 204, the protective layer 205, the sound insulation pad 206, the heat insulation layer 207, the sealing cover 3, the partition plate 301, the sealing plug 302, the spring 303, the internal thread connector 304, the heat-sensitive glass tube connecting seat 305, the positioning clamping groove 306, the sealing rubber strip 307, the elastic cavity 308 and the communication pipe 309 of the application are all general standard parts or parts known to those skilled in the art, and their structures and principles can be known by technical personnel through a technical manual or through a conventional experimental method. Embodiments

[0027] Please refer to Figures 1-4 As shown in the drawings, the utility model provides a technical scheme: a fireproof door with good heat insulation effect, comprising a door frame 1, further comprising:

[0028] The fireproof door body 2 is connected through a hinge and located in the door frame 1, and the inner cavity of the fireproof door body 2 is sequentially provided from front to back with the first heat insulation plate 204, the sound insulation pad 206 and the second heat insulation plate 203;

[0029] The sealing cover 3 is fixedly connected to the inner wall of the fireproof door body 2 on both sides, one side of the inner cavity of the sealing cover 3 is fixedly connected with the spring 303, one end of the spring 303 is fixedly connected with the sealing plug 302 sliding in the inner side of the sealing cover 3, the end of the inner cavity of the sealing cover 3 away from the sealing plug 302 is provided with the partition plate 301, the inner surface of the partition plate 301 is provided with the internal thread connector 304, and one end of the internal thread connector 304 is threadedly connected with the heat-sensitive glass tube connecting seat 305;

[0030] The positioning clamping groove 306 is opened on both ends of the outer surface of the fireproof door body 2, the inner side of the positioning clamping groove 306 is provided with the sealing rubber strip 307, the inner surface of one end of the sealing rubber strip 307 is provided with the elastic cavity 308, and the communication pipe 309 is arranged between the elastic cavity 308 and the sealing cover 3.

[0031] The material of the first heat insulation plate 204 is an aluminum silicate fiber plate, the material of the second heat insulation plate 203 is a rock wool board, the material of the sound insulation pad 206 is a polyethylene foam sound insulation pad, and the heat-sensitive glass tube in the heat-sensitive glass tube connecting seat 305 is a yellow burst tube.

[0032] The technical scheme: through the setting of the first heat insulation plate 204, the sound insulation pad 206 and the second heat insulation plate 203, the heat insulation and sound insulation effects of the fireproof door body 2 itself can be effectively improved; through the setting of the sealing rubber strip 307 and the positioning clamping groove 306, the gap between the door frame 1 and the fireproof door body 2 can be effectively reduced; when the yellow heat-sensitive glass tube connecting seat 305 with the heat-sensitive glass tube is screwed into the internal thread connecting head 304, if a fire occurs outside, as the temperature of the fireproof door body 2 rises, and the sealing cover 3 is sealed and fixed on the front and rear sides of the inner wall of the fireproof door body 2, the yellow heat-sensitive glass tube in the heat-sensitive glass tube connecting seat 305 will burst when the temperature exceeds 79 DEG C, and at this time, the spring 303 can drive the sealing plug 302 to move close to the partition plate 301 in the sealing cover 3 (the spring 303 is in a compressed state affected by the internal pressure of the sealing cover 3 and the sealing plug 302), and then the sealing plug 302 can send the gas in the sealing cover 3 to the other side of the partition plate 301 through the internal thread connecting head 304, and as the air pressure on the other side of the partition plate 301 increases, the gas can enter the elastic cavity 308 of the sealing rubber strip 307 through the connecting pipe 309, and the four sealing covers 3 arranged on one side of the inner wall of the fireproof door body 2 can assist in making the sealing rubber strip 307 swell, thereby eliminating the last gap between the door frame 1 and the fireproof door body 2, and the gap can be sealed, effectively preventing the outflow of smoke, so that the fireproof door body 2 has the capability of good heat insulation effect. Embodiment

[0033] On the basis of the embodiment one, the utility model discloses as shown in Figures 1-4 The right end of the front surface of the fireproof door body 2 is fixedly installed with a handle 201, and the outer side of the handle 201 is sleeved with a high-temperature-resistant heat insulation sleeve 202.

[0034] The technical scheme: through the setting of the high-temperature-resistant heat insulation sleeve 202, the user's palm can be prevented from being scalded in case of fire, and the user can open the fireproof door body 2 in an emergency. Embodiment

[0035] On the basis of the embodiment one, the utility model discloses as shown in Figures 1-4 The outer surface of the fireproof door body 2 is coated with a heat insulation layer 207, the outer side of the heat insulation layer 207 is coated with a protective layer 205, the material of the heat insulation layer 207 is aerogel composite paint, and the material of the protective layer 205 is nano ceramic heat insulation paint.

[0036] The technical scheme: through the setting of the heat insulation layer 207, the heat insulation ability of the outer surface of the fireproof door body 2 can be improved, and under the assistance of the protective layer 205, the heat insulation of the outer surface of the fireproof door body 2 can be further improved, and the heat insulation layer 207 can be protected, so that the scratch damage in the daily use process is avoided, and the heat insulation and wear resistance of the outer surface of the fireproof door body 2 are ensured.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited to the scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the present application.

Claims

1. A fire door with good thermal insulation effect, comprising a door frame (1), characterized in that, Also include: The fireproof door body (2) connected by the hinge and located in the door frame (1), the inner cavity of the fireproof door body (2) is provided with the first heat insulation plate (204) and the sound insulation pad (206) and the second heat insulation plate (203) from front to back in turn; The sealing cover (3) is fixedly connected to the inner wall of the fireproof door body (2) on the front and rear sides, one side of the inner cavity of the sealing cover (3) is fixedly connected with the spring (303), one end of the spring (303) is fixedly connected with the sealing plug (302) sliding in the inner side of the sealing cover (3), the end of the inner cavity of the sealing cover (3) away from the sealing plug (302) is provided with the partition plate (301), the inner surface of the partition plate (301) is provided with the internal thread connector (304), one end of the internal thread connector (304) is threadedly connected with the heat-sensitive glass tube connecting seat (305); The positioning clamping groove (306) is opened on the outer surface of the fireproof door body (2) on the front and rear ends, the inner side of the positioning clamping groove (306) is provided with the sealing rubber strip (307), the inner surface of one end of the sealing rubber strip (307) is provided with the elastic cavity (308), the communication pipe (309) is arranged between the elastic cavity (308) and the sealing cover (3).

2. The fire door with good thermal insulation effect according to claim 1, characterized in that: The right end of the front of the fireproof door body (2) is fixedly installed with the handle (201), the outer side of the handle (201) is sleeved with the high-temperature-resistant heat insulation sleeve (202).

3. The fire door with good thermal insulation effect according to claim 1, characterized in that: The outer surface of the fireproof door body (2) is coated with the heat insulation layer (207), the outer side of the heat insulation layer (207) is coated with the protective layer (205).

4. The fire door with good thermal insulation effect according to claim 3, characterized in that: The material of the heat insulation layer (207) is aerogel composite coating, and the material of the protective layer (205) is nano ceramic heat insulation coating.

5. The fire door with good thermal insulation effect according to claim 1, characterized in that: The material of the first heat insulation plate (204) is aluminum silicate fiber plate, and the material of the second heat insulation plate (203) is rock wool board.

6. The fire door with good thermal insulation effect according to claim 1, characterized in that: The material of the sound insulation pad (206) is polyethylene foam sound insulation pad.

7. The fire door with good thermal insulation effect according to claim 1, characterized in that: The heat-sensitive glass tube in the heat-sensitive glass tube connecting seat (305) is a yellow burst tube.