Compression-resistant fireproof door

Abstract

The utility model relates to a compression-resistant fireproof door which comprises a door leaf and a door frame which are matched with each other, a gas storage cavity is constructed in the door leaf, and the door frame is of a hollow structure, communicated with the gas storage cavity and provided with an exhaust port. An air inlet communicated with the interior of the air storage cavity is formed in one side of the door leaf, a blocking assembly keeping the air inlet normally closed is arranged at the air inlet, and when the pressure intensity at the air inlet reaches the threshold value state, the blocking assembly keeps the air inlet open. Under the action of position matching between the air inlet and the air storage cavity and the blocking assembly, when one side of the door leaf deals with strong pressure brought by a fire, the pressure relief effect can be achieved, and when the pressure is reduced to a certain degree, the air inlet is closed again, so that the sealing effect of the door leaf relation is kept through low pressure, and the service life of the door leaf is prolonged. In this way, a good resistance effect on high pressure can be achieved in the whole process, the service life of the building is prolonged, and meanwhile the building is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of fireproof doors, in particular to a pressure-resistant fireproof door. Background Art

[0002] Fire doors are usually installed in stairwells, floor passages or some storage rooms to isolate fires at critical moments. When a fire occurs, the air expands due to heat, which will generate a certain amount of pressure in the room. Therefore, compared with ordinary doors, fire doors must have a certain pressure resistance while isolating the fire source.

[0003] In current technology, the structure of fire doors is usually relatively simple. Especially when facing a fire in a closed room, they are easily deformed during the pressure process. Once the deformation is excessive, the sealing between the door frame and the door frame will be reduced, resulting in leakage of toxic gases in the room. If the strength is improved by simply increasing the thickness of the door leaf material, the weight of the door leaf will increase, which is not conducive to daily use. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the following technical problems in the prior art: the current fire doors cannot well withstand the strong air pressure caused by fire due to their simple structure. Therefore, the purpose of the utility model is to provide a pressure-resistant fire door based on the current technology, which aims to automatically release the pressure on the fire side when facing strong air pressure, thereby achieving a certain pressure resistance effect.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A pressure-resistant fire door, comprising a matching door leaf and door frame, wherein:

[0008] An air storage cavity is constructed in the door leaf, and the door frame is a hollow structure, connected to the air storage cavity, and is provided with an exhaust port;

[0009] An air inlet connected to the air storage cavity is arranged on one side of the door leaf, and a sealing component for keeping it normally closed is arranged at the air inlet. When the pressure at the air inlet reaches a threshold state, the sealing component keeps the air inlet open.

[0010] As a preferred technical solution for a pressure-resistant fire door, the sealing assembly includes a sealing plate located inside the air storage cavity, and a spring assembly connected between the sealing plate and the inner wall of the air storage cavity.

[0011] As an optimal technical solution for a pressure-resistant fire door, a connecting column is constructed on the door leaf, which is a hollow structure and is connected to the air storage chamber. A supporting sleeve is constructed on the door frame, which is connected to the interior of the door frame. The connecting column rotatably fits inside the supporting sleeve.

[0012] As an optimal technical solution for a pressure-resistant fire door, a one-way valve is provided at the exhaust port, and the gas flows from the inside of the door frame to the outside through the one-way valve.

[0013] As an optimal technical solution for a pressure-resistant fire door, a plurality of reinforcement plates are constructed in the air storage cavity, and the plurality of reinforcement plates are arranged horizontally and vertically.

[0014] As an optimal technical solution for a pressure-resistant fire door, a filter is provided in the door leaf, and the gas in the gas storage cavity flows from the filter to the connecting column.

[0015] As a preferred technical solution for a pressure-resistant fire door, the filter element is detachably arranged in the door leaf.

[0016] As an optimal technical solution for a pressure-resistant fire door, it also includes a cover plate, a placement groove is provided in the door leaf, the air storage cavity is connected with the inside of the connecting column through the placement groove, the filter element is movably arranged in the placement groove, and the cover plate is sealed on the placement groove.

[0017] The beneficial effect of the pressure-resistant fire door provided by the utility model is that: under the position coordination between the air inlet and the air storage cavity and the action of the sealing component, when one side of the door leaf is facing the strong pressure caused by the fire, the high pressure can force the air inlet to be opened, thereby discharging the gas to the outside through the building facilities to achieve the effect of pressure relief. When the pressure drops to a certain level, the air inlet is closed again, thereby maintaining the sealing effect of the door leaf relationship through low pressure, so that it can have a good resistance to high pressure in the whole process. Compared with the pressure-resistant method of increasing the thickness of the door body in the current technology, the fire door of the utility model does not need to adopt too high quality, thereby ensuring the convenience of daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is a three-dimensional perspective view of the present utility model.

[0020] Figure 2 This is another three-dimensional perspective view of the present invention.

[0021] Figure 3 This is a disassembled diagram of the door leaf and the door frame in the present invention.

[0022] Figure 4 This is an internal display diagram of the door leaf in the present invention.

[0023] Figure 5 This is a partial three-dimensional cut-out display diagram of the door leaf in the present invention.

[0024] Figure 6 This is a schematic diagram of the installation of the filter element on the door leaf in the utility model.

[0025] Figure numerals: 1. door leaf; 2. door frame; 3. air storage chamber; 4. exhaust port; 5. air inlet; 6. sealing assembly; 601. sealing plate; 602. spring assembly; 7. connecting column; 8. supporting sleeve; 9. one-way valve; 10. reinforcement plate; 11. filter element; 12. cover plate; 13. placement groove. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] Reference Figure 1-3 An embodiment of the utility model provides a pressure-resistant fire door, comprising a door frame 2 and a door leaf 1 installed on the door frame 2, wherein the utility model also has the following features:

[0031] The door leaf 1 is provided with an air storage chamber 3, and the door frame 2 is hollow inside. The hollow area is a sealed structure and is not connected to the door lock slot and the bottom. The hollow area is only connected to the air storage chamber 3 and is also provided with an exhaust port 4.

[0032] An air inlet 5 communicating with the air storage chamber 3 is provided on one side of the door leaf 1. The air inlet 5 is specifically located on the side facing the room when the door leaf 1 is closed. A sealing component 6 is provided at the air inlet 5 to keep itself in a closed state at all times. Only when the pressure faced by the air inlet 5 reaches a threshold state, the sealing component 6 will keep the air inlet 5 in an open state.

[0033] When the utility model is installed, the exhaust port 4 on the hollow area in the door frame 2 needs to be connected with the ventilation and exhaust facilities on the building, such as being connected with the ventilation duct in the positive pressure air supply port, or being connected with the exhaust duct of some fresh air equipment, etc. When being connected with the ventilation and exhaust facilities, a pipeline can be used for connection, and the pipeline can be buried in the wall. By connecting with the exhaust facilities, the hollow area in the door frame 2 can be kept connected with the outdoors eventually; when facing a fire in a closed room, and when the pressure generated in the room reaches a certain level, that is, when the threshold is reached, the air inlet 5 is opened through the sealing component 6, so that the high-pressure gas in the room can enter the air storage cavity 3, and reach the inside of the door frame 2 through the connection relationship, so as to be discharged to the outdoor air along with the ventilation and exhaust facilities of the building, so as to have the effect of relieving the pressure in the room, thereby Actively reducing the indoor pressure during a fire to effectively resist pressure, compared to the current technology of increasing the firmness of the door body to resist pressure, the door leaf 1 of the present invention does not need to rely too much on its own structural strength when resisting pressure, so there is no need to increase its own mass too much, which can better facilitate daily use; in addition, as the pressure relief process proceeds, when the indoor pressure is reduced to a certain extent, the air inlet 5 is closed again under the action of the sealing component 6, so that the door leaf 1 is pushed by the smaller indoor pressure to keep the edge of the door leaf 1 from squeezing the door frame 2 to a certain extent, so as to maintain the sealing effect of the door leaf 1 when it is closed, so as to reduce the occurrence of toxic gas discharge in the room; as mentioned above, for the threshold value, the specific size can be set according to the maximum pressure that the building can withstand;

[0034] Compared with the current technology, the fire door provided by the utility model can actively reduce the indoor pressure when resisting pressure, that is, reduce the pressure on the fire side, and thus can also protect the building structure. For example, when unloading the pressure, it can reduce the compressive damage to the indoor walls caused by the high pressure, and can also reduce the phenomenon of window cracking due to the high indoor pressure, thereby protecting the indoor sealing effect, and thus reducing the phenomenon of external oxygen entering the room to continue to support combustion.

[0035] Further, see Figure 1-5 The sealing component 6 includes a sealing plate 601 located on the inner side of the air storage chamber 3, and the surface of the sealing plate 601 is larger than the opening area of ​​the air inlet 5. The sealing component also includes a spring component 602 connected between the sealing plate 601 and the inner wall of the air storage chamber 3. The resistance force of the spring component 602 is used to keep the sealing plate 601 in contact with the air inlet 5, thereby sealing the air inlet 5 and keeping the air inlet 5 in a normally closed state. When there is a strong air pressure at the air inlet 5, the sealing plate 601 can be pushed, so that the sealing plate 601 breaks free from the elastic force of the spring component 602 and moves, thereby separating from the air inlet 5 to achieve the effect of releasing the closed state of the air inlet 5. Regarding the elastic force of the spring component 602, a spring component 602 of corresponding strength can be selected according to the threshold.

[0036] Further, see Figure 3 The door leaf 1 is provided with a connecting column 7 which is a hollow structure and is communicated with the air storage chamber 3. The door frame 2 is provided with a supporting sleeve 8 which is communicated with the interior of the door frame 2. The connecting column 7 is rotatably matched with the interior of the supporting sleeve 8, thereby completing the rotational installation of the door leaf 1 on the door frame 2. Through the hollow structure inside the connecting column 7 and the cooperation of the supporting sleeve 8, the communication effect between the air storage chamber 3 inside the door leaf 1 and the hollow part inside the door frame 2 is achieved. Through this communication method, it can be combined with the installation between the door leaf 1 and the door frame 2 to eliminate the cumbersomeness of installing additional pipelines, making the structure simple and easy to implement.

[0037] Further, see Figure 2 A one-way valve 9 is also provided at the exhaust port 4, and its direction is that the gas flows from the inside of the door frame 2 to the outside through the one-way valve 9; through the action of the one-way valve 9, the external air can be prevented from flowing back into the room along the door frame 2 and the air storage chamber 3 when the air inlet 5 is opened, that is, the phenomenon of increased oxygen in the room during a fire can be prevented, so as to further promote the rapid extinguishing of the fire.

[0038] Further, see Figure 4A plurality of reinforcing plates 10 are also constructed in the gas storage chamber 3, and the plurality of reinforcing plates 10 are arranged horizontally and vertically; the structural coordination of the plurality of reinforcing plates 10 can increase the structural strength of the door leaf 1 to a certain extent; in addition, the horizontal and vertical arrangement of the reinforcing plates 10 forms a maze-like orientation between the reinforcing plates 10, thereby increasing the time for the gas to flow through the gas storage chamber 3 during pressure relief, so as to dissipate the heat of the discharged gas through the action of the door leaf 1, thereby reducing the heat damage caused by the high-temperature exhaust gas to the exhaust facilities in the building. For example, some ventilation ducts in the building are made of plastic, and the exhaust gas can be cooled to protect the ventilation ducts.

[0039] Further, see Figure 4 and Figure 6 A filter 11 is arranged in the door leaf 1. In terms of positional relationship, the gas in the air storage chamber 3 needs to pass through the filter 11 when being discharged, and finally flows into the connecting column 7; in order to achieve this positional relationship, the filter 11 can be arranged at the connecting point between the inside of the air storage chamber 3 and the hollow part in the connecting column 7; through the effect of the filter 11, the solid matter in the gas can be effectively intercepted when exhausting, thereby reducing the degree of pollution caused by combustion being discharged into the air, and also preventing the combustion waste contained in the gas from accumulating in the ventilation setting of the building, thereby protecting the corresponding facilities; regarding the filter 11, components such as a filter net or a steel wool can be used.

[0040] Furthermore, the filter element 11 is detachably arranged in the door leaf 1; thus, the filter element 11 can be replaced or cleaned after a fire occurs, so that the entire device can continue to be used, thereby further improving the practical effect of the utility model.

[0041] Further, see Figure 6 As for the disassembly method of the filter element 11, the utility model further includes a cover plate 12, a placement groove 13 is arranged in the door leaf 1, the air storage chamber 3 is communicated with the inside of the connecting column 7 at the placement groove 13, the filter element 11 is movably arranged in the placement groove 13, so as to ensure that the airflow passes through the inside of the groove to penetrate the filter element 11, and the cover plate 12 is sealed at the notch of the placement groove 13, so as to ensure the airtight isolation between the placement groove 13 and the outside; when taking and placing the filter element 11, the cover plate 12 can be directly removed, so that the replacement process of the filter element 11 is simple and easy to operate, and the cover plate 12 can be specifically arranged at the notch of the placement groove 13 by bolts.

[0042] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pressure-resistant fire door, characterized in that: It comprises a matching door leaf (1) and a door frame (2), wherein: The door leaf (1) is provided with an air storage cavity (3), the door frame (2) is a hollow structure, is connected to the air storage cavity (3), and is provided with an exhaust port (4); An air inlet (5) communicating with the air storage chamber (3) is provided on one side of the door leaf (1); a sealing component (6) for keeping the air inlet (5) normally closed is provided at the air inlet (5); when the pressure at the air inlet (5) reaches a threshold value, the sealing component (6) keeps the air inlet (5) open.

2. The pressure-resistant fire door according to claim 1, characterized in that: The sealing assembly (6) comprises a sealing plate (601) located inside the air storage chamber (3), and a spring assembly (602) connected between the sealing plate (601) and the inner wall of the air storage chamber (3).

3. The pressure-resistant fire door according to claim 1, characterized in that: The door leaf (1) is provided with a connecting column (7) which is a hollow structure and is connected to the air storage chamber (3); the door frame (2) is provided with a supporting sleeve (8) which is connected to the interior of the door frame (2); the connecting column (7) is rotatably fitted in the interior of the supporting sleeve (8).

4. The pressure-resistant fire door according to claim 1, characterized in that: A one-way valve (9) is provided at the exhaust port (4), and gas flows from the inside of the door frame (2) to the outside through the one-way valve (9).

5. The pressure-resistant fire door according to claim 1, characterized in that: A plurality of reinforcement plates (10) are constructed in the air storage chamber (3), and the plurality of reinforcement plates (10) are arranged in a horizontal and vertical manner.

6. The pressure-resistant fire door according to claim 3, characterized in that: A filter element (11) is provided in the door leaf (1), and the gas in the gas storage chamber (3) flows from the filter element (11) to the connecting column (7).

7. The pressure-resistant fire door according to claim 6, characterized in that: The filter element (11) is detachably arranged inside the door leaf (1).

8. The pressure-resistant fire door according to claim 7, characterized in that: It also comprises a cover plate (12), a placement groove (13) is arranged in the door leaf (1), the air storage cavity (3) and the interior of the connecting column (7) are connected through the placement groove (13), the filter element (11) is movably arranged in the placement groove (13), and the cover plate (12) is sealed on the placement groove (13).

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