CN110029922B - a fire door - Google Patents

Abstract

The invention discloses a fireproof door, which comprises a narrow-edge door frame made of a metal material, wherein a concave cavity is formed in one surface of the door frame, more than two fireproof plates are elastically hinged at the bottom of the concave cavity, the tops of the fireproof plates are movable ends, the outer side surfaces of the movable ends at the tops of the fireproof plates are sealed and limited through a limiting sealing mechanism, the fireproof plates are parallel to a horizontal plane in a natural state, the fireproof plates are equidistantly arranged in the concave cavity, a filling cavity is formed between every two adjacent fireproof plates, and a fire insulation material is filled in the filling cavity. The door panel can bounce the fire source when a fire disaster occurs, so that the fire source is away from the door body instantly, and the fire is continuously prevented by the fireproof plate which is not contacted with the fire source inside, so that the fireproof time of the fireproof door panel is greatly prolonged, and more time is won for rescue and escape.

Description

a fire door

technical field

The invention relates to a door, in particular to a fire door.

Background technique

A fire door is a door that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. It is a fire partition with certain fire resistance, such as fire compartments, evacuation stairwells, vertical shafts, etc. In addition to the function of ordinary doors, fire doors also have the function of preventing the spread of fire and smoke, which can prevent the spread of fire within a certain period of time and ensure the evacuation of people. At present, the types of fire doors can be divided into wooden fire doors, steel fire doors, steel wood fire doors, other fire doors, etc. Wood fire doors are commonly used, with beautiful appearance and light weight, so wood fire doors are generally made of flame-retardant wood. Or fire-resistant wood products for door frame, door frame, door panel. However, in general, during a fire, the flame directly contacts the fire door panel, which causes the door panel to carbonize after burning. Although the fire door can prevent the spread of the fire for a certain period of time, it will continue to spread after excessive combustion, which is obtained for the escape of the trapped people. time is not long. The fire source is always in contact with the fire door, which accelerates the burning of the fire door.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a fireproof door, which has very good fireproof and heat insulation performance, can temporarily keep the fire source away from the door panel, contain the fire source, and can replace a new one after the outermost fireproof panel is damaged. The fire board continues to withstand the flames, giving the trapped people a longer escape and rescue time.

The present invention is realized by the following technical solutions: a fire door, comprising a narrow-sided door frame made of metal material, one surface of the door frame is provided with a concave cavity, and the bottom of the concave cavity is elastically hinged and provided with more than two fireproof boards , the top of the fireproof board is the movable end, and the outer side of the top movable end is sealed and limited by a limit sealing mechanism. The fireproof board is parallel to the horizontal plane in the natural state, and each fireproof board is equally spaced in the cavity. A filling cavity is formed between the plates, and the filling cavity is filled with fireproof material.

As a preferred technical solution, each fireproof board is a fireproof wood board, and has a closed air storage cavity inside. The air storage cavity is filled with inert gas. The above exhaust holes are all limited by the limit sealing mechanism, and more than one exhaust hole is arranged on the bottom surface of the stepped cavity opened on the top of the fireproof board, and the limit sealing mechanism seals the entire stepped cavity.

As a preferred technical solution, the limit sealing mechanism includes more than one limit rod and a sealing sheet. A silicone sealing layer is embedded in the bottom of the sealing sheet. The sealing sheet is a metal sheet as a whole. The air hole, the top of the sealing sheet is provided with more than one first socket, the top surface of the concave cavity facing the first socket is provided with a corresponding second socket, and one end of the limit rod is inserted into the first socket to punch. The glue is fixed, the other end is inserted into the second jack and glued to fix, and one or more limit rods press down the sealing sheet and make the sealing sheet contact and press the end surface of the fireproof board.

As a preferred technical solution, the fireproof materials are all fireproof cotton layers.

As a preferred technical solution, the limit rods are all made of flame-retardant wood, and they are all cylindrical.

As a preferred technical solution, the bottom surface of the concave cavity is provided with the same number of rotating cavities as the fireproof boards side by side, a rotating shaft hole is respectively provided on both sides of the rotating cavity, and a rotating shaft is respectively provided on both sides of the fireproof board, and a rotating shaft is fixed on the rotating shaft. The torsion spring, the rotating shaft is installed in the rotating hole through the torsion spring, and the fireproof plate is parallel to the horizontal plane in the natural state through the torsion spring.

The beneficial effects of the present invention are: 1. In the present invention, when there is a fire, the outermost fireproof board is used as a fire prevention, and the outermost fireproof board is bounced off after being subjected to the flame, and the fire source can be temporarily taken away. If the fire source is only Near the door panel, the flame can be basically separated, so that the flame no longer contacts the door panel, so that the trapped person can operate the door body to enter the safe area;

2. In the present invention, after the outer fireproof board is damaged, the inner fireproof board can continue to withstand the flame, so that a new fireproof board can be used to prevent fire, increase more time, and have better fireproof performance;

3. Since a large amount of inert gas is stored in the fireproof board of the present invention, the filling cavity can be connected to the inner filling cavity after the fireproof board is thrown out, so that the inert gas in the filling cavity can be thrown out and temporarily reduce the gas near the trajectory line of the fireproof board. The amount of oxygen reduces the size of the flame to a certain extent.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the overall structure schematic diagram of the fire door of the present invention;

Fig. 2 is the structural schematic diagram of the external fireproof board of the present invention after being thrown out;

Fig. 3 is the front structural view of the fire door of the present invention;

4 is a schematic structural diagram of the limit sealing mechanism of the present invention;

Fig. 5 is the partial enlarged schematic diagram of A place in Fig. 3;

FIG. 6 is a partial enlarged schematic view of B in FIG. 2 .

Detailed ways

As shown in Figures 1 and 3, a fire door includes a narrow door frame 4 made of metal material, one surface of the door frame 4 is provided with a cavity 3, and the bottom of the cavity 3 is elastically hinged and provided with two or more fireproof Board 2, the top of the fire board 2 is the movable end, and the outer side of the top movable end is sealed and limited by a limit sealing mechanism 7. The fire board 2 is parallel to the horizontal plane in its natural state, and the fire boards 2 are equidistantly arranged in the concave. In the cavity, a filling cavity 5 is formed between adjacent fireproof boards 2, and the filling cavity 5 is filled with fireproof material.

In this embodiment, as shown in FIG. 3 , each fireproof board 2 is a fireproof wooden board, and has a closed air storage cavity 21 inside. The air storage cavity 21 is filled with inert gas, and the top of the air storage cavity 21 is provided with More than one exhaust hole (not shown), more than one exhaust hole is limited by the limit sealing mechanism 7, and more than one exhaust hole is arranged on the bottom surface of the stepped cavity 6 opened on the top of the fireproof board 2. The limit sealing mechanism 7 seals the entire step cavity 6. The function of the limit sealing mechanism is to prevent the fireproof board from turning out, and at the same time, it can also play the role of sealing the exhaust holes, preventing the inert gas inside the fireproof board from being discharged to the outside world. .

As shown in FIG. 4-FIG. 6, the limit sealing mechanism 7 includes more than one limit rod 71 and a sealing sheet 73. A silicone sealing layer 72 is embedded in the bottom of the sealing sheet 73, and the sealing sheet 73 is a metal sheet as a whole. The silicone sealing layer 72 on the lower end surface seals the small exhaust holes, the top of the sealing sheet 73 is provided with more than one first insertion hole, and the top surface of the concave cavity facing the first insertion hole is provided with a corresponding second insertion hole. One end of the position rod 71 is inserted into the first jack and fixed with glue, and the other end is inserted into the second jack to be fixed with glue. One or more limit rods press down the sealing sheet and make the sealing sheet 73 and the upper end surface of the fireproof board 2 Contact pressing, when there is no flame outside, the limit sealing mechanism always seals the exhaust hole, and the limit rod always limits the fire board to prevent the fire board from turning out.

When a fire occurs, the outer fireproof board is subjected to flames. In this embodiment, the fireproof board is also made of flame-retardant wood. When the wood is burned, the surface layer is gradually carbonized to form a thermal conductivity lower than that of the wood (about 1/3 to 1 of the thermal conductivity of the wood). /2) carbonized layer. When the carbonized layer reaches a sufficient thickness and remains intact, it becomes a thermal insulation layer, which can effectively limit the speed of heat transfer to the interior, so that the wood has good combustion resistance. At the same time, all the limit rods are also under the erosion of the flame, so the diameter of the limit rod needs to be set according to the fire board, so that the carbonization speed of the two is the same, so that when the fire board surface is carbonized to the limit, the limit The position rod breaks after being subjected to flame erosion in transition. At this time, the fireproof board is thrown out, as shown in Figure 2. During the throwing process of the fireproof board, the fireproof board can be used to take away part of the flame, so that this part of the flame is far away from the door body. , and in the process of throwing out, the originally sealed exhaust hole is also turned on at this time, and the internal inert gas is thrown out. After the inert gas is thrown out, it contacts with the air, reducing the oxygen concentration in the air and reducing the flame combustion. The function of strength temporarily suppresses the flame. When the outermost fireproof board is burned and thrown out by the flame, the fireproof insulation cotton is used to continue the fire, and the inner fireproof board is used to continue to withstand the flame to prevent the door body from being burned through, and the fireproof insulation cotton can be used when not in use. The door body has a good sound insulation effect.

Wherein, the limit rods 71 are all made of flame-retardant wood, and they are all cylindrical. Fire-retardant wood refers to wood that has been added with flame retardants, and the method of improving the fire resistance of wood by physical or chemical methods. The characteristics of this wood are that it is difficult to burn, and the purpose is to retard the burning of the wood to prevent the occurrence of fire, or to gain time to quickly eliminate the fire that has occurred. Therefore, the limit rod in the present invention also has good flame retardant performance, and at the same time can play a limit function.

In this embodiment, the bottom surface of the concave cavity 3 is provided with the same number of rotating cavities as the fireproof boards side by side, a rotating shaft hole is respectively provided on both sides of the rotating cavity, and a rotating shaft 1 is respectively provided on both sides of the fireproof board, and the rotating shafts 1 are fixed on both sides. Set a torsion spring, the rotating shaft is rotated and installed in the rotating hole through the torsion spring, the fireproof plate 2 is parallel to the horizontal plane in the natural state by the torsion spring, and each fireproof plate is twisted and perpendicular to the horizontal plane by the torsion spring, so as to realize the normal door opening. It can be used together, the exterior is fireproof board, the overall weight is lighter, the use of metal is less, and the design is more novel.

The beneficial effects of the present invention are: 1. In the present invention, when there is a fire, the outermost fireproof board is used as a fire prevention, and the outermost fireproof board is bounced off after being subjected to the flame, and the fire source can be temporarily taken away. If the fire source is only Near the door panel, the flame can be basically separated, so that the flame no longer contacts the door panel, so that the trapped person can operate the door body to enter the safe area;

2. In the present invention, after the outer fireproof board is damaged, the inner fireproof board can continue to withstand the flame, so that a new fireproof board can be used to prevent fire, increase more time, and have better fireproof performance;

3. Since a large amount of inert gas is stored in the fireproof board of the present invention, the filling cavity can be connected to the inner filling cavity after the fireproof board is thrown out, so that the inert gas in the filling cavity can be thrown out and temporarily reduce the gas near the trajectory line of the fireproof board. The amount of oxygen reduces the size of the flame to a certain extent.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this, and any changes or substitutions that are not conceived of without creative work should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

Claims (3)

1. a fire door is characterized in that: comprise the narrow side door frame made of metal material, one of the faces of the door frame is provided with a concave cavity, the bottom of the concave cavity is elastically hinged and provided with more than two fireproof boards, the bottom surface of the concave cavity is provided with The same number of rotating cavities as the fireproof boards are arranged side by side, and a rotating shaft hole is respectively set on both sides of the rotating cavity. A rotating shaft is respectively set on both sides of the fireproof board, and a torsion spring is fixedly fitted on the rotating shaft. In the rotating hole, the fire board is parallel to the horizontal plane in the natural state through the torsion spring; The top of the fireproof board is the movable end, and the outer side of the top movable end is sealed and limited by a limit sealing mechanism. Inert gas, the top of the gas storage cavity is provided with more than one exhaust hole, more than one exhaust hole is limited by the limit sealing mechanism, and more than one exhaust hole is set in the step cavity opened on the top of the fireproof board On the bottom surface, the limit sealing mechanism seals the entire stepped cavity. The limit sealing mechanism includes more than one limit rod and a sealing sheet. A silicone sealing layer is embedded at the bottom of the sealing sheet. The sealing sheet is a metal sheet as a whole, and its lower end surface The silicone sealing layer seals the exhaust holes, the top of the sealing sheet is provided with more than one first socket, the top surface of the cavity facing the first socket is provided with a corresponding second socket, and one end of the limit rod is inserted into the The first jack is fixed with glue, the other end is inserted into the second jack and fixed with glue, and more than one limit rod presses the sealing sheet down and makes the sealing sheet contact and press the end surface of the fireproof board. In the event of a fire, When the surface of the fireproof board is carbonized to the limit, the limit rod breaks after being eroded by the flame, and the fireproof board is thrown out. The inert gas is thrown out; In the natural state, the fireproof boards are parallel to the horizontal plane, and each fireproof board is arranged in the cavity at equal distances, and a filling cavity is formed between adjacent fireproof boards, and the filling cavity is filled with fire insulation materials. 2 . The fire door according to claim 1 , wherein the fire insulating material is a fireproof cotton layer. 3 . 3 . The fire door according to claim 1 , wherein the limit rods are all made of flame-retardant wood, and they are all cylindrical. 4 .

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