Fireproof door for building fire passage

Abstract

The application discloses a fireproof door for building fire exit, and relates to the technical field of fireproof doors. The top covering assembly of the soft plate in a roll shape is arranged on the wall above the fireproof door, and the protection plate made of metal sheet is arranged in the door plate. When the temperature of the fireproof door is high, the soft plate in the roll shape is stretched, and the protection plate is pulled out of the door plate when the fireproof door is pushed. The combination of the two door plates and the protection plate is in the shape of U, which prevents the escape personnel from directly rushing out of the fireproof door and avoids the smoke and flame from entering. The fireproof door for building fire exit can effectively prevent the escape personnel from pushing it open by mistake, thereby protecting the life and property safety of the escape personnel.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fireproof doors, in particular to a fireproof door for a building fire exit. BACKGROUND

[0002] The fireproof door is a component for blocking the spread of fire in a building, and can achieve the requirement of fireproof separation when a fire occurs. The fireproof door has become an indispensable fire safety configuration in modern buildings and is compulsorily applied in large buildings such as airports, hotels, large shopping malls, residential areas, municipal buildings and government agencies. Fireproof doors are installed at fire exit positions such as emergency exits, receiving doors, safety doors and internal passage doors. In addition to the function of ordinary doors, the fireproof door can prevent the spread of fire and smoke diffusion, and can prevent the spread of fire for a certain period of time to ensure personnel evacuation.

[0003] When a fire actually occurs, if the handle of the fireproof door is hot, it indicates that the outside corridor is full of high-temperature flames and hot air, and it is difficult to escape through the corridor. At this time, if the door is opened, the air will form a convection, and the flames will immediately spread into the room, causing greater damage and endangering life safety. However, in an actual fire, due to the tension of the fleeing personnel, the fireproof door is easily pushed open and rushed out, thereby causing irreparable losses. In order to avoid congestion of personnel at the fireproof door position when evacuating from the room to the outside, further harm is caused. Generally, the fireproof door is set as an outward opening door. At this time, if the crowd gathers at the door, it is extremely easy to push the door open under the condition that the line of sight is affected, causing smoke and flames to enter the room along with the airflow, which seriously affects safety. SUMMARY

[0004] The application embodiment provides a fireproof door for a building fire exit, which solves the technical problem that in the prior art, the fireproof door is easily pushed open by the fleeing personnel in a fire, and smoke and flames easily enter the room along with the airflow, thereby seriously affecting the life and property safety of the fleeing personnel, and achieves the technical effect that the fireproof door for a building fire exit can effectively avoid being pushed open by the fleeing personnel and protect the life and property safety of the fleeing personnel.

[0005] The application embodiment provides a fireproof door for a building fire exit, which includes a door frame, a door body and a door closer, the door body includes a first door panel and a second door panel rotatably connected to the door frame, and further includes a top covering assembly.

[0006] The door body includes a partition strip and a protection plate.

[0007] The first door panel is provided with a hollow cavity at a position close to the partition strip, and is provided with an insertion slot on an edge close to the partition strip.

[0008] The metal sheet fixing body is provided on the surface of the partition strip close to the first door plate, and is in one-to-one correspondence with the insertion slot.

[0009] The magnet is provided on the surface of the second door plate close to the partition strip and the surface of the partition strip close to the second door plate.

[0010] The storage slot is further provided on the surface of the second door plate close to the partition strip.

[0011] The protection plate is stored in the storage slot and fixed on the partition strip.

[0012] The top covering assembly is fixed on the wall above the door hole, and comprises a bearing body, a winding plate, a fixing strip and a binding rope.

[0013] The bearing body is horizontally arranged and is in a triangular prism shape and is fixed on the wall.

[0014] The winding plate is a rectangular metal soft plate and is wound in a roll in a normal state, and one side edge is fixed on the wall.

[0015] The binding rope is a thin rope made of rubber or plastic material and is used to bind the winding plate.

[0016] Preferably, the winding plate is coated with a non-dry adhesive for slowing down the unwinding speed.

[0017] Further, the metal sheet fixing body comprises a first double metal sheet, a second double metal sheet and a base.

[0018] The base is a hard plate body and is fixed on the partition strip to serve as a bearing and fixing.

[0019] The first double metal sheet and the second double metal sheet are both in a strip shape, symmetrically arranged and both in a double metal sheet structure, one end of each is fixed on the base, and the other end of each is fixed together; each tends to be a straight plate at normal temperature and gradually bends when the temperature rises.

[0020] Further, the partition strip is fixed with a protection soft plate made of rubber, which is in a long strip shape and has an arc-shaped cross section.

[0021] The number of the protection soft plates is two, which are symmetrically arranged on two opposite surfaces of the partition strip; the combination of the two protection soft plates has an eight-shaped cross section.

[0022] Preferably, the application further comprises an expanded door plate, and the first door plate and / or the second door plate is provided with an observation window.

[0023] The number of the expansion door plate is one or two, which is plate-shaped and rotationally connected to the first door plate and / or the second door plate, the rotation axis of the expansion door plate is parallel to the rotation axis of the first door plate, and the height of the expansion door plate is the same as that of the first door plate; and the connection position is close to the two sides of the door frame.

[0024] The expansion door plate is fixed to the first door plate and / or the second door plate by means of the embedded fixing body, and the first door plate and / or the second door plate is provided with an embedded groove at a position corresponding to the embedded fixing body; the embedded fixing body is internally provided with a bimetallic strip, and the bimetallic strip drives the embedded fixing body to deform when the temperature of the door body rises.

[0025] Further, the embedded fixing body comprises a bearing column, a sliding pin and a displacement body.

[0026] The embedded groove is provided with a groove for the sliding pin to insert on the side wall thereof.

[0027] The bearing column is a hollow column fixed to the expansion door plate, the axial direction of which is parallel to the ground, and the side wall thereof is provided with a hole for the sliding pin to extend out.

[0028] The sliding pin is slidingly positioned on the bearing column, and the axial direction of the sliding pin is perpendicular to the axial direction of the bearing column, and the sliding pin extends out from the side wall of the bearing column in a normal state.

[0029] The displacement body is a bimetallic strip structure, one end of which is fixed in the bearing column and the other end of which is fixed on the sliding pin, and the displacement body controls the sliding of the sliding pin under the influence of temperature.

[0030] Preferably, the dust falling assembly is further included.

[0031] The dust falling assembly comprises a liquid storage assembly, a manual pump assembly and a spraying assembly fixed to the expansion door plate.

[0032] The main body of the liquid storage assembly is a container, which is provided with water inlet and outlet ports and internally contains water.

[0033] The manual pump assembly is in communication with the liquid storage assembly and the spraying assembly, and functions to pump water to the spraying assembly.

[0034] The spraying assembly sprays water towards the passageway and is fixed to the expansion door plate; when spraying water, the dust and smoke in the passageway are inhibited, thereby obtaining a better view.

[0035] Further, the manual pump assembly comprises a telescopic bag, a tension spring, a movable plate, a pulling rope, a pull ring and a connecting pipe.

[0036] The telescopic bag is a bellows capable of telescoping, one end of which is fixed to the expansion door plate and the other end of which is fixed with the movable plate.

[0037] The telescopic bag is in communication with the liquid storage assembly and the spraying assembly through the connecting pipe, and the connecting pipe is provided with a one-way valve body.

[0038] One end of the tension spring is fixed on the movable plate, and the other end is fixed on the expansion door plate, and is in a contracted state in normal state.

[0039] The pulling rope is a steel wire rope, one end of which is fixed on the movable plate, penetrates the first door plate and / or the second door plate, and the other end is fixed with a pull ring.

[0040] In use, the fugitives pump water by pulling the pull ring on the inside of the door.

[0041] Preferably, the injection assembly comprises a plurality of injection bodies arranged in a horizontal row, including a bearing seat, a conveying hose, an injection plate and a sealing wax.

[0042] The bearing seat is fixed on the expansion door plate and serves as a bearing function.

[0043] The conveying hose is communicated with the connecting pipe and is a rubber hose with a length less than 2 cm and a diameter less than 0.8 cm.

[0044] The injection plate is a circular plate densely covered with small holes, fixed on the end of the conveying hose away from the bearing seat, and the water flow from the conveying hose is sprayed out after being refined by the injection plate. When the water flows in the conveying hose, the conveying hose will swing due to the size of the impact force, thereby expanding the dust reduction area.

[0045] The sealing wax is a block of paraffin wax wrapped around the injection plate and sealing it.

[0046] Preferably, the conveying hose is provided with a deformation limiting belt inside, which is a strip-shaped metal plate fixed on the bearing seat and the injection plate at both ends, and parallel to the ground when the conveying hose is horizontal.

[0047] One or more technical solutions provided in the embodiments have at least the following technical effects or advantages:

[0048] By optimizing and improving the fireproof door in the prior art, the top covering assembly of the soft plate in the form of a roll is arranged on the wall above the fireproof door, and the protection plate in the form of a metal sheet is arranged in the door plate. When the temperature of the fireproof door is high, the soft plate in the form of a roll will expand, and the protection plate will be pulled out of the door plate when the fireproof door is pushed open. At this time, the combination of the two door plates and the protection plate is in the shape of U, which prevents the fugitives from directly rushing out of the fireproof door while avoiding the intrusion of smoke and flames. It effectively solves the technical problem that in the prior art, the fireproof door is easily pushed open by the fugitives in a panic when a fire occurs, which easily leads to the intrusion of smoke and flames into the room along with the airflow, thereby easily seriously affecting the life and property safety of the fugitives, thereby realizing the technical effect that the fireproof door for building fire exit can effectively avoid being pushed open by the fugitives and protect the life and property safety of the fugitives. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 is a structural schematic diagram of the door body;

[0050] Figure 2 is a schematic diagram of the position relationship between the door body and the wall body;

[0051] Figure 3 is a schematic diagram of the open state of the door body;

[0052] Figure 4 is a schematic diagram of the local structure of the door body;

[0053] Figure 5 is a schematic diagram of the position relationship of the hollow cavity in the first door plate;

[0054] Figure 6 is a schematic diagram of the position relationship of the first door plate, the second door plate and the partition strip;

[0055] Figure 7 is a schematic diagram of the unfolded state of the protective plate;

[0056] Figure 8 is a schematic diagram of the unfolded state of the roll plate;

[0057] Figure 9 is a schematic diagram of the position relationship between the second door plate and the protective plate;

[0058] Figure 10 is a schematic diagram of the position relationship between the second door plate and the partition strip;

[0059] Figure 11 is a structural schematic diagram of the metal sheet fixing body;

[0060] Figure 12 is a schematic diagram of the position relationship between the metal sheet fixing body and the storage groove;

[0061] Figure 13 is a schematic diagram of the position relationship between the expansion door plate and the first door plate and the second door plate;

[0062] Figure 14 is a schematic diagram of the structure of the dust falling assembly;

[0063] Figure 15 is a schematic diagram of the position relationship between the first door plate and the first plate body;

[0064] Figure 16 is a structural schematic diagram of the embedded fixing body;

[0065] Figure 17 is a structural schematic diagram of the dust falling assembly;

[0066] Figure 18 is a structural schematic diagram of the manual pump assembly;

[0067] Figure 19This is a schematic diagram of the spray assembly.

[0068] Figure 20 This is a simplified diagram of the internal structure of the delivery hose.

[0069] In the picture:

[0070] Wall 001, Doorway 002, Floor 003, First Door Panel 110, Hollow Cavity 111, Insert Slot 112, Second Door Panel 120, First Magnet 121, Storage Slot 122, Spacer 130, Protective Flexible Sheet 131, Metal Sheet Fixing Body 132, First Bimetallic Sheet 133, Second Bimetallic Sheet 134, Base 135, Second Magnet 136, Door Handle 140, Protective Plate 150, First Plate 161, Second Plate 162, Embedded Fixing Body 163, Supporting Column 164. Sliding pin; 165. Displacement body; 166. Embedded groove; 167. Door closer; 200. Bearing body; 310. Roll plate; 320. Fixing strip; 321. Restraint rope; 330. Liquid storage assembly; 410. Manual pump assembly; 420. Telescopic bladder; 421. Tension spring; 422. Movable plate; 423. Pull rope; 424. Pull ring; 425. One-way valve body; 430. Spray assembly; 440. Bearing seat; 441. Delivery hose; 442. Spray plate; 443. Sealing wax; 444. Deformation limiting band; 445. Detailed Implementation

[0071] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0072] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0074] Example 1

[0075] like Figures 1 to 12 As shown, the fire door for building fire escape routes in this application is positioned on the doorway 002 of the wall 001, and includes a door frame, a door body, a door closer 200, and a top covering assembly.

[0076] The door frame is fixed on the door opening 002 and serves to support and position the door body.

[0077] The door body is positioned on the door frame and includes a first door panel 110, a second door panel 120, a partition strip 130, and a protective plate 150;

[0078] The edges of the first door panel 110 and the second door panel 120 are rotatably connected to the door frame to form a double door.

[0079] The partition strip 130 is a rigid rod-shaped body, which is detachably positioned on the edge of the first door panel 110 and the second door panel 120 away from the connection position between itself and the door frame, and is arranged longitudinally; the partition strip 130 together with the first door panel 110 and the second door panel 120 seals the door opening 002;

[0080] The first door panel 110 has a longitudinally arranged rod-shaped cavity near the partition strip 130. For ease of description, this rod-shaped cavity is defined here as hollow cavity 111; Figure 5 As shown, the hollow cavity 111 is located near the edge of the first door panel 110; the first door panel 110 is provided with three or more insertion slots 112 near the edge of the partition strip 130. The insertion slots 112 are rectangular through slots and communicate with the hollow cavity 111. After the metal sheet fixing body 132 enters the insertion slot 112, it will directly enter the hollow cavity 111.

[0081] like Figure 4 As shown, the partition strip 130 has multiple metal sheet fixing bodies 132 on its surface close to (close to) the first door panel 110. Each metal sheet fixing body 132 corresponds to an insertion slot 112. The main body is a bimetallic strip structure (a bimetallic strip is a composite structure made of two different metal sheets stacked together, and its working principle is based on the different thermal expansion properties of the two metals when the temperature changes). When the door is closed, it is embedded in the insertion slot 112, and when the door is open, it extends out of the insertion slot 112. When the door is heated, it deforms and thus fixes the first door panel 110 and the partition strip 130 together.

[0082] The partition strip 130 has multiple second magnets 136 on its surface near (close to) the second door panel 120. The second magnets 136 are permanent magnets, preferably plate-shaped and embedded in the partition strip 130. The second door panel 120 has multiple first magnets 121 on its surface near the partition strip 130. The first magnets 121 are permanent magnets, preferably plate-shaped and embedded in the second door panel 120. The first magnets 121 and the second magnets 136 attract each other. Under the action of magnetic force, the partition strip 130 is positioned on the second door panel 120.

[0083] The second door plate 120 is further provided with a storage groove 122 on the surface close to the partition strip 130, the internal space of the storage groove 122 is plate-shaped, and the opening is located on the surface of the second door plate 120 close to the partition strip 130, and is used for storing the protective plate 150;

[0084] The protective plate 150 is a metal sheet, the height of the protective plate 150 is greater than 0.9 times the height of the second door plate 120, and the length of the protective plate 150 is greater than 0.8 times the length of the second door plate 120; the protective plate 150 is normally stored in the storage groove 122, and the edge close to the partition strip 130 is fixed on the partition strip 130;

[0085] The door closer 200 is fixed on the door frame and the door body, and is used for assisting the door body to close the door hole 002.

[0086] The top covering assembly is fixed on the wall body 001 above the door hole 002, and comprises a carrier 310, a winding plate 320, a fixed strip 321 and a binding rope 330;

[0087] The carrier 310 is horizontally arranged and is in a triangular prism shape, and is fixed on the wall body 001, so as to play a bearing role and avoid the expansion of the winding plate 320 being blocked by the door closer 200;

[0088] The winding plate 320 is a rectangular metal soft plate, is normally wound into a roll, is horizontally arranged, and one side edge is fixed on the wall body 001 through the fixed strip 321; the width of the winding plate 320 is greater than the length of the door body, and the length of the winding plate 320 is greater than 0.6 times the height of the door body;

[0089] The binding rope 330 is a thin rope made of rubber or plastic, and is used for binding the winding plate 320 to avoid expansion; when the temperature of the passageway increases to a specific range (the value is determined according to actual needs, and is closely related to the structure and material of the winding plate 320 and the structure and material of the binding rope 330), the binding rope 330 is broken, and the winding plate 320 is also expanded under its own gravity after the binding rope 330 is broken.

[0090] The fireproof door in the embodiment is actually used as follows:

[0091] In a normal state, the partition strip 130 is fixed on the second door plate 120 by magnetic adsorption, the metal sheet fixing body 132 can be extended from the insertion groove 112, and the door body is normally opened;

[0092] When a fire causes the corridor temperature to be high, the roll plate 320 unfolds, and the metal sheet fixing body 132 deforms to fix the partition 130 to the first door panel 110. At this time, when the door is pushed, the roll plate 320 will cover the top of the door, and the protective plate 150 will be pulled out to block airflow, flames and smoke from entering the room. If it is determined by the person (through the door gap, body temperature, smoke penetration, etc.) that the corridor is passable, the protective plate 150 can be pushed to be completely pulled out of the storage slot 122. If it is determined by the person that the corridor is not passable, the door will be closed again.

[0093] Preferably, the cross-section of the support body 310 is a right-angled triangle, with one side fixed to the wall 001 and the bottom surface parallel to the ground 003.

[0094] Preferably, the surface of the support body 310 away from and near the ceiling is a concave curved surface.

[0095] Preferably, the fixing strip 321 is a metal strip with multiple through holes for inserting expansion screws; the roll plate 320 also has multiple through holes that correspond one-to-one with the through holes on the fixing strip 321; during installation, the edge of the roll plate 320 is fixed to the wall 001 by expansion screws.

[0096] Preferably, in order to prevent the rapid unwinding of the roll plate 320 from injuring pedestrians, the roll plate 320 is coated with an adhesive to slow down the unwinding speed. The presence of the adhesive causes the roll plate 320 to unwind slowly.

[0097] Furthermore, such as Figure 11 As shown, the metal sheet fixing body 132 includes a first bimetallic strip 133, a second bimetallic strip 134, and a base 135; the base 135 is a rigid plate, fixed to the spacer 130, and serves to support and fix it; the first bimetallic strip 133 and the second bimetallic strip 134 are both strip-shaped sheets, symmetrically arranged, and both have a bimetallic strip structure, with one end fixed to the base 135 and the other end fixed together; as shown... Figure 12 As shown, it tends to be straight at room temperature, but gradually bends as the temperature rises.

[0098] Preferably, in order to prevent the metal sheet fixing body 132 from scratching people's clothing when people pass by, a rubber protective soft plate 131 is fixed on the partition strip 130. The protective soft plate 131 is long and strip-shaped with an arc-shaped cross-section. There are two protective soft plates 131, which are symmetrically arranged on two opposite surfaces of the partition strip 130. The cross-section of the combination of the two protective soft plates 131 is V-shaped.

[0099] Furthermore, door handles 140 are fixed on both the first door panel 110 and the second door panel 120.

[0100] The technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0101] The technical problems that in the prior art, when a fire occurs, a fireproof door is easily pushed open by nervous fleeing personnel, and smoke and flames are easily chased into the room along the air flow, thereby seriously affecting the safety of the lives and property of the fleeing personnel are solved, and the technical effect that the fireproof door for a building fire exit can effectively avoid being pushed open by the fleeing personnel and thereby protect the safety of the lives and property of the fleeing personnel is achieved.

[0102] Embodiment Two

[0103] In order to protect the specific state in the passage after the door body is pushed open by the fleeing personnel, thereby facilitating the judgment of whether to escape from the passage, the embodiment of the present application adds an expansion door plate to the first door plate 110 and / or the second door plate 120, and an observation window is arranged on the first door plate 110 and / or the second door plate 120.

[0104] As shown in Figure 13 and Figure 15 , the number of the expansion door plate is one or two, which is in the shape of a plate and is rotationally connected to the first door plate 110 and / or the second door plate 120, the axial direction of the rotation shaft is the same as that of the first door plate 110, the height is the same as that of the first door plate 110, and the connection position is close to the two sides of the door frame.

[0105] As shown in Figure 16 , the expansion door plate is fixed to the first door plate 110 and / or the second door plate 120 through the embedded fixing body 163, and the first door plate 110 and / or the second door plate 120 is provided with an embedded groove 167 at a position corresponding to the embedded fixing body 163; the embedded fixing body 163 is internally provided with a bimetallic strip, and when the temperature of the door body rises, the bimetallic strip drives the embedded fixing body 163 to deform, so that the embedded fixing body 163 loses the fixing effect and can be separated from the embedded groove 167.

[0106] The covered position of the expansion door plate on the first door plate 110 and / or the second door plate 120 is provided with an observation window made of high-temperature-resistant glass material.

[0107] In actual use, after the first door plate 110 and the second door plate 120 are pushed open and closed under the condition that the temperature of the passage is high, the expansion door plate will stay in place due to the compression of the coiled plate 320. Due to the existence of the expansion door plate, the observation window close to the passage side will not be contaminated by smoke before the expansion door plate is separated, thereby obtaining a better observation field of view.

[0108] Further, the number of the expansion door plate is two, which are respectively a first plate body 161 and a second plate body 162, and are respectively positioned on the first door plate 110 and the second door plate 120.

[0109] Further, the embedded fixing body 163 comprises a bearing column 164, a sliding pin 165 and a displacement body 166; the embedded groove 167 is provided with a groove for inserting the sliding pin 165 on the side wall; the bearing column 164 is a hollow column fixed on the expanded door plate, the axial direction of which is parallel to the ground 003, and the side wall is provided with a hole for the sliding pin 165 to extend out; the sliding pin 165 is slidingly positioned on the bearing column 164, and the axial direction of the sliding pin 165 is perpendicular to the axial direction of the bearing column 164, and the sliding pin 165 extends out from the side wall of the bearing column 164 in the normal state; the displacement body 166 is a bimetallic strip structure, one end of which is fixed in the bearing column 164, and the other end is fixed on the sliding pin 165, and the displacement body 166 controls the sliding of the sliding pin 165 under the influence of temperature.

[0110] Embodiment three

[0111] In order to ensure that the specific state in the passage can be observed conveniently after the fugitive pushes the door body, and then it is convenient to judge whether to escape from the passage, the embodiment of the application adds a dust falling assembly on the basis of the above-mentioned embodiment; specifically:

[0112] As shown in Figure 14 , the dust falling assembly comprises a liquid storage assembly 410 fixed on the expanded door plate, a manual pump assembly 420 and a spraying assembly 440; the main body of the liquid storage assembly 410 is a container, which is provided with a water inlet and outlet and is internally filled with water; the manual pump assembly 420 is in communication with the liquid storage assembly 410 and the spraying assembly 440, and functions to pump water to the spraying assembly 440; the spraying assembly 440 is a combination of multiple spray heads, which sprays water towards the passage and is fixed on the expanded door plate; when spraying water, the dust and smoke in the passage are inhibited, and a better field of view is obtained.

[0113] Further, as shown in Figure 17 and Figure 18 , the manual pump assembly 420 comprises a telescopic bag 421, a tension spring 422, a movable plate 423, a pulling rope 424, a pull ring 425 and a connecting pipe;

[0114] The telescopic bag 421 is a bellows capable of telescoping, one end of which is fixed on the expanded door plate, and the other end is fixed with the movable plate 423; the telescopic bag 421 is in communication with the liquid storage assembly 410 and the spraying assembly 440 through the connecting pipe, and the connecting pipe is provided with a one-way valve body 430; one end of the tension spring 422 is fixed on the movable plate 423, and the other end is fixed on the expanded door plate, and the tension spring 422 is in a contracted state in the normal state; the pulling rope 424 is a steel wire rope, one end of which is fixed on the movable plate 423, penetrates through the first door plate 110 and / or the second door plate 120, and the other end is fixed with the pull ring 425; in actual use, the fugitive pumps water by pulling the pull ring 425 on the inside of the door, and the expanded door plate can also be closed again by pulling the pulling rope 424.

[0115] Further, as shown in Figure 19 andFigure 20 As shown in the drawings, in order to expand the dust area and improve the dust effect, the spraying assembly 440 includes a plurality of spraying bodies arranged in a horizontal row, including a bearing seat 441, a conveying hose 442, a spraying plate 443 and a sealing wax 444; the bearing seat 441 is fixed on the expansion door plate and serves as a bearing; the conveying hose 442 is communicated with the connecting pipe and is a rubber hose with a length less than 2 cm and a diameter less than 0.8 cm; the spraying plate 443 is a circular plate densely covered with small holes and is fixed at one end of the conveying hose 442 away from the bearing seat 441, so that the water flow from the conveying hose 442 is sprayed out after being refined by the spraying plate 443, and the water flow in the conveying hose 442 will cause the conveying hose 442 to swing due to the impact force, thereby expanding the dust area; the sealing wax 444 is a block of paraffin wax wrapped on the spraying plate 443 and sealing it, which will melt and lose the sealing effect after being heated.

[0116] Preferably, the conveying hose 442 is provided with a deformation limiting belt 445 inside, which is a strip-shaped metal plate fixed at both ends on the bearing seat 441 and the spraying plate 443, and is parallel to the ground 003 when the conveying hose 442 is horizontal; the deformation limiting belt 445 serves to limit the swinging direction of the conveying hose 442, thereby avoiding water waste.

[0117] Preferably, the water inlet and outlet is provided with a one-way valve body 430 communicated with the fire-fighting pipeline, and the stored water therein is replaced regularly.

[0118] Preferably, the water stored in the liquid storage assembly 410 is water mixed with disinfectant, which is not easy to breed aquatic organisms.

[0119] Preferably, a storage box is provided near the fire door, and a dust mask is provided inside.

[0120] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fireproof door for building fire passage, comprising a door frame, a door body and a door closer (200), the door body comprising a first door panel (110) and a second door panel (120) rotatably connected to the door frame, characterized in that: The top covering assembly is further included; The door body comprises a partition strip (130) and a protective plate (150); The first door plate (110) is provided with a hollow cavity (111) near the partition strip (130), and an insertion slot (112) is arranged on the edge near the partition strip (130); A plurality of metal sheet fixing bodies (132) are arranged on the surface of the partition strip (130) near the first door plate (110), and correspond to the insertion slots (112) one by one, and the main body is a bimetallic sheet structure, which is embedded in the insertion slot (112) in the closed state of the door body; Magnets are arranged on the surface of the partition strip (130) near the second door plate (120) and the surface of the second door plate (120) near the partition strip (130); The second door plate (120) is further provided with a storage slot (122) on the surface near the partition strip (130); The protective plate (150) is stored in the storage slot (122) and fixed on the partition strip (130); The top covering assembly is fixed on the wall (001) above the door opening (002) and comprises a carrier (310), a winding plate (320), a fixing strip (321) and a binding rope (330); The carrier (310) is transversely arranged and is in a triangular prism shape and is fixed on the wall (001); The winding plate (320) is a rectangular metal soft plate, which is wound in a roll in a normal state, and one side edge is fixed on the wall (001); The binding rope (330) is a thin rope made of rubber or plastic, which binds the winding plate (320); The metal sheet fixing body (132) comprises a first bimetallic sheet (133), a second bimetallic sheet (134) and a base (135); The base (135) is a hard plate body, which is fixed on the partition strip (130) and plays a role of bearing and fixing; The first bimetallic sheet (133) and the second bimetallic sheet (134) are both in a strip shape, are symmetrically arranged and are both in a bimetallic sheet structure, one end of each is fixed on the base (135), and the other end of each is fixed together; they tend to be straight plates at normal temperature and gradually bend when the temperature rises.

2. The fire door for a fire-prevention passage of a building according to claim 1, wherein: The winding plate (320) is coated with a non-dry adhesive for slowing down the unwinding speed, and the existence of the non-dry adhesive makes the winding plate (320) slowly unwind.

3. The fire door for a fire-prevention passage of a building according to claim 1, wherein: The partition strip (130) is fixed with protective soft plates (131) made of rubber, and the protective soft plates (131) are in a strip shape and are arc-shaped in cross section; The number of the protective soft plates (131) is two, which are symmetrically arranged on two opposite surfaces of the partition strip (130); and the combination of the two protective soft plates (131) is in an eight-shaped cross section.

4. The fire door for a fire exit of a building according to any one of claims 1 to 3, wherein: The first door plate (110) and / or the second door plate (120) is / are provided with an observation window; The number of the expansion door plate is one or two, which is / are in a plate shape, is / are rotationally connected to the first door plate (110) and / or the second door plate (120), the axial direction of the rotation shaft is the same as that of the first door plate (110), the height is the same as that of the first door plate (110), and the connection position is close to the two sides of the door frame. The expansion door plate is fixed on the first door plate (110) and / or the second door plate (120) through the embedding fixing body (163), the first door plate (110) and / or the second door plate (120) are provided with embedding grooves (167) corresponding to the embedding fixing body (163); the embedding fixing body (163) is internally provided with a bimetallic strip, when the temperature of the door body rises, the bimetallic strip drives the embedding fixing body (163) to deform.

5. The fire door for a fire-prevention passage of a building according to claim 4, wherein: The embedding fixing body (163) comprises a bearing column (164), a sliding pin (165) and a displacement body (166); The embedding groove (167) is provided with a groove for inserting the sliding pin (165) on the side wall; The bearing column (164) is a hollow column fixed on the expansion door plate, the axial direction is parallel to the ground (003), and the side wall is provided with a hole for the sliding pin (165) to extend out; The sliding pin (165) is slidingly positioned on the bearing column (164), the axial direction of the sliding pin (165) is perpendicular to the axial direction of the bearing column (164), and the sliding pin (165) extends out from the side wall of the bearing column (164) in a normal state; The displacement body (166) is a bimetallic strip structure, one end of which is fixed in the bearing column (164) and the other end of which is fixed on the sliding pin (165), and the displacement body (166) controls the sliding of the sliding pin (165) under the influence of temperature.

6. The fire door for a fire-prevention passage of a building according to claim 4, wherein: Further comprising a dust falling assembly; The dust falling assembly comprises a liquid storage assembly (410), a manual pump assembly (420) and a spraying assembly (440) fixed on the expansion door plate; The main body of the liquid storage assembly (410) is a container, which is provided with a water inlet and outlet and internally contains water; The manual pump assembly (420) is in communication with the liquid storage assembly (410) and the spraying assembly (440), and functions to pump water to the spraying assembly (440); The spraying assembly (440) sprays water towards the passageway and is fixed on the expansion door plate; when spraying water, the dust and smoke in the passageway are inhibited, thereby obtaining a better view.

7. The fire door for a fire-prevention passage of a building according to claim 6, wherein: The manual pump assembly (420) comprises a telescopic bag (421), a tension spring (422), a movable plate (423), a pulling rope (424), a pull ring (425) and a connecting pipe; The telescopic bag (421) is a bellows capable of telescoping, one end of which is fixed on the expansion door plate and the other end of which is fixed with the movable plate (423); The telescopic bag (421) is in communication with the liquid storage assembly (410) and the spraying assembly (440) through the connecting pipe, and the connecting pipe is provided with a one-way valve body (430); One end of the tension spring (422) is fixed on the movable plate (423) and the other end thereof is fixed on the expansion door plate, and the tension spring (422) is in a contracted state in a normal state; The pulling rope (424) is a steel wire rope, one end of which is fixed on the movable plate (423), penetrates through the first door plate (110) and / or the second door plate (120), and the other end thereof is fixed with the pull ring (425); When in use, the fugitive personnel pumps water by pulling the pull ring (425) on the inner side of the door.

8. The fire door for a fire-prevention passage of a building according to claim 6, wherein: The spraying assembly (440) comprises a plurality of spraying bodies arranged in a horizontal row, and comprises a bearing seat (441), a conveying hose (442), a spraying plate (443) and a sealing wax (444); The bearing seat (441) is fixed on the expansion door plate and functions to bear; The conveying hose (442) is communicated with the connecting pipe, is a rubber hose, the length is less than 2 cm, and the diameter is less than 0.8 cm; The spray plate (443) is a round plate densely covered with small holes, is fixed at the end of the conveying hose (442) away from the bearing seat (441), and water flow from the conveying hose (442) is sprayed out after being refined by the spray plate (443); water flowing in the conveying hose (442) causes the conveying hose (442) to swing due to the size of the impact force, thereby expanding the dust fall area; The sealing wax (444) is a block of paraffin wax, which is wrapped on the spray plate (443) and seals it.

9. The fire door for a fire-prevention passage of a building according to claim 8, wherein: The conveying hose (442) is provided with a deformation limiting belt (445) inside, the deformation limiting belt (445) is a strip-shaped metal plate, and both ends are fixed on the bearing seat (441) and the spray plate (443) respectively; when the conveying hose (442) is horizontal, the deformation limiting belt (445) is parallel to the ground (003).

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