CN112796633B

CN112796633B - Civil air defense door

Info

Publication number: CN112796633B
Application number: CN202011613843.0A
Authority: CN
Inventors: 邱国平; 王春辉; 周祥国; 李西军; 熊星; 吴渊; 郑小国; 侯勇; 李忠原; 孟晨; 王成伟; 李传文
Original assignee: Shandong Sifang Weiye Civil Air Defense Equipment Co ltd
Current assignee: Shandong Sifang Weiye Civil Air Defense Equipment Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-06-21
Anticipated expiration: 2040-12-30
Also published as: CN112796633A

Abstract

The application relates to a civil air defense door, which comprises a door frame and a door leaf, wherein the door leaf is hinged to the door frame, and a closed structure is arranged between the door frame and the door leaf; the periphery of the door leaf is provided with a groove of the door leaf, the upper side of the door frame is provided with a containing groove, the containing groove is connected with a water absorption backing plate which is horizontally arranged in a sliding manner and one side of the water absorption backing plate can be inserted into the groove, the upper side of the door leaf is fixedly provided with a water tank, the positions of the two ends of the water tank corresponding to the water absorption backing plate are vertically and fixedly connected with water guide pipes, one side of each water guide pipe close to the water absorption backing plate is provided with a water outlet hole, the upper side of each water guide pipe corresponding to the water outlet hole is provided with a rotating shaft in a rotating manner, a valve plate is fixedly connected onto the rotating shaft, the two ends of the water absorption backing plate are provided with sliding grooves along the horizontal direction, and the end parts of the rotating shafts are fixedly connected with connecting rods connected into the sliding grooves in a sliding manner; a temperature sensing glass bulb I is arranged in the doorframe. This application has the effect that can effectually reach the infiltration that prevents dense cigarette.

Description

Civil air defense door

Technical Field

The application relates to the field of civil air defense facilities, in particular to a civil air defense door.

Background

The civil air defense door is a door of an entrance and an exit of civil protection engineering, and the classification of the civil air defense door is more distinct, and the civil air defense door comprises various civil air defense devices such as common single-leaf and double-leaf protective airtight doors and airtight doors, a movable door threshold single-leaf and double-leaf protective airtight doors and the like. People's air defense door is different according to the demand of using, also can divide into explosion-proof door, prevents fire door etc. and prevents that fire door also is the most common people's air defense door at present.

The existing referenceable authorization publication numbers are: CN105089461A, which is a chinese patent of invention, discloses a steel-wood heat-insulating fireproof door, comprising a door frame and a door leaf. The door frame is hinged with the door leaf through a fireproof hinge. The door leaf is respectively provided with a plywood, a glass magnesium flat plate and an expanded perlite fireproof plate from the outside to the center in the thickness direction. The plane size of the expanded perlite fireproof plate is smaller than that of the plywood and the glass magnesium flat plate. The fire-retardant wood is arranged around the expanded perlite fire-proof plate. The cross sections of the four frames of the door frame are L-shaped, and the door leaf is limited by the L-shaped door frame in a closed state. An L-shaped fireproof expansion sealing element matched with the L-shaped door frame is arranged between the door frame and the door leaf. Compared with the prior art, the door leaf has the advantages of high strength, good fireproof performance and capability of effectively avoiding deformation of the door leaf.

In view of the above-mentioned related art, the inventor believes that, in a fire door, although fire prevention can be achieved, there is still a case where dense smoke penetrates through a gap between the fire door and a door frame when a danger occurs.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a civil air defense door which can effectively achieve the effect of preventing dense smoke from permeating.

The application provides a civil air defense door adopts following technical scheme:

a civil air defense door comprises a door frame and a door leaf arranged in the door frame, wherein the door leaf is hinged to the door frame, and a closed structure is arranged between the door frame and the door leaf;

the periphery of the door leaf is provided with a groove surrounding the door leaf, the upper side of the door frame is provided with a containing groove, the containing groove is connected with a water absorption backing plate which is horizontally arranged in a sliding manner and one side of the water absorption backing plate can be inserted into the groove, the upper side of the door leaf is fixedly provided with a water tank, the positions of two ends of the water tank corresponding to the water absorption backing plate are vertically and fixedly connected with water guide pipes, one side of each water guide pipe close to the water absorption backing plate is provided with a water outlet hole, the upper sides of the water guide pipes corresponding to the water outlet holes are respectively and rotatably provided with a rotating shaft, a valve plate which can seal the water guide pipes in a horizontal state is fixedly connected onto the rotating shaft, two ends of the water absorption backing plate are horizontally provided with sliding grooves, and the end parts of the rotating shafts are respectively and fixedly connected with connecting rods of which the other ends are connected into the sliding grooves in a sliding manner;

a first temperature sensing glass bulb which can drag the water absorption plate to keep the valve plate in a horizontal state under a normal state is arranged in the door frame;

elastic water absorbing strips which can be inserted into the grooves of the door leaves are fixedly connected to the two inner sides and the bottom edges of the door frame.

By adopting the technical scheme, in a normal state, the first temperature sensing glass bubble can pull and hold the water absorbing base plate to the upper side of the containing groove of the door leaf, so that the elastic base plate is prevented from being inserted into the containing groove, after the door leaf is closed, the elastic water absorbing strip in the door frame can be inserted into the groove of the door leaf, when the external temperature rises to break the first temperature sensing glass bubble, the water absorbing base plate loses the pulling and holding force, the water absorbing base plate automatically falls due to the self weight of the water absorbing base plate, so that the water absorbing base plate moves towards the containing groove direction of the door leaf to one side to be inserted into the containing groove, and the connecting rod is dragged to rotate along with the movement of the water absorbing base plate, the rotating valve plate rotates along with the rotation of the rotating shaft, the communication between the water guide pipe and the water tank is realized, the water in the water guide pipe flows to the water absorbing base plate from the water guide pipe, and the water can fill the whole water absorbing base plate due to the water absorption of the water absorbing base plate, meanwhile, redundant water flows to the positions of the containing grooves on the two sides of the door leaf and the positions of the containing grooves on the lower side of the door leaf continuously, so that water is absorbed again through the elastic water absorbing strips of the door frame, and the water absorbing base plates and the elastic water absorbing strips after water absorption are used for sealing the door leaf and the door frame, so that smoke permeation is avoided.

Optionally, the water absorption backing plate comprises a horizontal plate, an elastic water absorption pad is fixedly connected to the lower side of the horizontal plate, the sliding grooves are respectively formed in the positions of the two ends of the horizontal plate, the push spring is vertically fixed between the horizontal plate and the water tank, and the temperature sensing glass bulb I is fixed between the horizontal plate and the door frame.

Through adopting above-mentioned technical scheme, the elasticity absorbent pad that adopts can guarantee closely butt in holding the groove to improve the closure.

Optionally, a plurality of supporting springs with one end fixedly connected to the horizontal plate are vertically and fixedly connected in the elastic water absorption pad.

Through adopting above-mentioned technical scheme, the supporting spring of adoption can support elasticity water absorption pad, avoids pushing away the great elasticity water absorption pad excessive extrusion that leads to of effort of spring, guarantees the water-retaining nature of elasticity water absorption pad.

Optionally, the door leaf includes the main fire door body, one side rigid coupling of the fire door body has the reinforcing plate, form the holding chamber between reinforcing plate and the fire door body, the holding intracavity is filled with the fire prevention cotton that absorbs water, the position between the fire door body and the reinforcing plate is seted up to the recess, the infiltration hole with holding chamber intercommunication is all seted up to the upside and the downside of recess.

Through adopting above-mentioned technical scheme, adopt the infiltration hole can be convenient for hold rivers to the holding intracavity of inslot to the cotton that absorbs water of fire prevention in to the door leaf permeates, thereby makes the cotton that absorbs water of fire prevention in the door leaf wet, and then realizes the cooling of door leaf, improves the heat resistance of door leaf.

Optionally, a supporting framework is fixedly connected in the accommodating cavity.

Through adopting above-mentioned technical scheme, the support skeleton of adoption can strengthen the intensity in holding chamber.

Optionally, a water-soluble film is fixedly connected to the position of the groove corresponding to the water seepage hole.

Through adopting above-mentioned technical scheme, the water-soluble membrane of adoption can seal the infiltration hole under the normality, avoids external impurity to get into the holding chamber, and flows into behind the rivers in the storage tank, and water-soluble membrane can break to make rivers flow to the holding intracavity, the cotton infiltration of absorbing water to the fire prevention.

Optionally, the door frame has holding grooves formed in both sides thereof, the holding grooves are rotatably connected with baffles with horizontally arranged rotation axes, blocking grooves are formed in both sides of the door leaf, and the baffles can be inserted into the blocking grooves when rotating to a horizontal state towards the door leaf direction.

By adopting the technical scheme, the end part of the baffle can be inserted into the blocking groove by rotating the baffle to the horizontal state, so that the door frame and the door leaf are sealed.

Optionally, a second temperature sensing glass bulb is fixedly connected to the upper side of one end, close to the door leaf, of the accommodating groove, the lower end of the second temperature sensing glass bulb is fixedly connected to the baffle, and one end, far away from the rotation axis, of the baffle can be pulled by the second temperature sensing glass bulb to be obliquely and upwards arranged.

By adopting the technical scheme, in a normal state, the temperature sensing glass bulb has the two baffles, so that the baffles are not matched with the blocking grooves, the door leaf is convenient to open and close, when the external temperature is too high, the temperature sensing glass bulb is automatically broken, the blocking plates are inserted into the blocking grooves, and the door leaf is firmly sealed

Optionally, a knob extending out of the door frame is fixedly connected to one side of the baffle, and the rotation axis of the knob and the rotation axis of the baffle are in the same straight line.

By adopting the technical scheme, the knob is rotated to drive the baffle plate to rotate, so that the door leaf can be opened by driving the baffle plate to move through the knob after the closing plate is inserted into the blocking groove.

Optionally, one side of the door frame is hinged to one surface of the door leaf, the other side of the door frame is fixedly connected with a surrounding barrier which can abut against the other surface of the door leaf, and one side of the surrounding barrier, which is close to the door leaf, is fixedly connected with a fireproof sealing strip.

Through adopting above-mentioned technical scheme, when closing the door leaf, can make a surface butt of door leaf in enclosing the fender to carry on spacingly to the door leaf on the one hand, on the other hand also can realize the further sealing of door leaf and door shield through the fire prevention sealing strip, reduces the effluvium of smog.

In summary, the present application includes at least one of the following beneficial technical effects:

1. under a normal state, the first temperature-sensing glass bulb can pull the water-absorbing base plate to the upper side of the containing groove of the door leaf so as to prevent the elastic base plate from being inserted into the containing groove, after the door leaf is closed, the elastic water-absorbing strip in the door frame can be inserted into the groove of the door leaf, when the external temperature rises to break the first temperature-sensing glass bulb, the water-absorbing base plate loses the pulling force, the water-absorbing base plate automatically falls due to the self-weight of the water-absorbing base plate, so that the water-absorbing base plate moves towards the containing groove direction of the door leaf to one side to be inserted into the containing groove, and the connecting rod is dragged to rotate along with the movement of the water-absorbing base plate along with the rotation of the water-absorbing base plate, the rotating valve plate rotates along with the rotation of the rotating shaft, the communication between the water guide pipe and the water tank is realized, the water in the water guide pipe flows to the water guide pipe to the water-absorbing base plate, and the water is filled in the whole water-absorbing base plate due to the water absorption of the water-absorbing base plate, meanwhile, redundant water continuously flows to the positions of the containing grooves on the two sides of the door leaf and the positions of the containing grooves on the lower side of the door leaf, so that water is absorbed again through the elastic water absorbing strips of the door frame, and the water absorbing base plate and the elastic water absorbing strips after water absorption seal the space between the door leaf and the door frame, so that smoke permeation is avoided;

2. the adopted supporting spring can support the elastic water absorption pad, so that the excessive extrusion of the elastic water absorption pad caused by the large acting force of the pushing spring is avoided, and the water storage property of the elastic water absorption pad is ensured;

3. adopt the infiltration hole can be convenient for hold rivers to the holding intracavity of inslot to the cotton that absorbs water of fire prevention in to the door leaf permeates, thereby makes the cotton that absorbs water of fire prevention in the door leaf wet, and then realizes the cooling of door leaf, improves the heat resistance of door leaf.

Drawings

Fig. 1 is a schematic view of the overall structure of a civil air defense door of the present application.

Fig. 2 is a schematic view of an open state of a civil air defense door of the present application.

Fig. 3 is a schematic view of a containing groove structure of a civil air defense door of the application.

Fig. 4 is a schematic view of a tank structure of a civil air defense door of the present application.

Fig. 5 is a schematic structural view of a door leaf of a civil air defense door of the present application.

Fig. 6 is a schematic view of an inner support framework structure of a door leaf of a civil air defense door.

Fig. 7 is a schematic view of a flap structure of a civil air defense door of the present application.

Description of reference numerals: 1. a door frame; 11. fencing; 12. an elastic absorbent strip; 13. a containing groove; 14. a first temperature sensing glass bulb; 15. accommodating a tank; 151. a second temperature-sensing glass bulb; 2. a door leaf; 21. a groove; 22. a fire-proof door body; 221. a blocking groove; 23. a reinforcing plate; 24. an accommodating cavity; 241. a support framework; 242. absorbent cotton; 25. a water seepage hole; 251. water-soluble film; 3. a water absorbing base plate; 31. a horizontal plate; 311. a chute; 32. an elastic absorbent pad; 33. a support spring; 4. a water tank; 41. a water conduit; 411. a water outlet hole; 42. a rotating shaft; 43. a valve plate; 44. a connecting rod; 5. a baffle plate; 51. a knob.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses civil air defense door.

Referring to fig. 1 and picture, a people's air defense door, include door frame 1 and set up door leaf 2 in door frame 1, a surface side of door leaf 2 passes through the hinge and articulates in one side of door frame 1, the opposite side rigid coupling of door frame 1 has encloses fender 11, rotate door leaf 2 to door frame 1 in the back, door leaf 2 can the butt in enclosing fender 11, for further improvement enclose the leakproofness that keeps off 11 and door leaf 2, it has the fire protection sealing strip to enclose one side rigid coupling that keeps off 11 and be close to door leaf 2, still be provided with enclosed construction between door frame 1 and the door leaf 2, enclosed construction is used for closure door frame 1 and door leaf 2 at ordinary times, can adopt the lock that various can closure door leaf 2 and door frame 1 (here is no longer repeated for prior art).

Referring to fig. 2, a groove 21 surrounding the door 2 is disposed on the periphery of the door 2, and the cross section of the groove 21 may be in various shapes such as a semicircle, a rectangle, a triangle, a trapezoid, etc., and the rectangle is taken as an example in this embodiment. Two insides and the equal rigid coupling of diapire of door frame 1 have elasticity to absorb water strip 12, and elasticity absorbs water strip 12 can adopt fire-retardant sponge, rotates door leaf 2 to door frame 1 in when closing door leaf 2, and fire-retardant sponge can insert and locate in the recess 21 of door leaf 2.

Referring to fig. 3 and 4, the upside of door frame 1 has been seted up and has been held groove 13, hold the water absorption backing plate 3 that the inslot 13 internal vertical sliding was connected with the level and sets up, water absorption backing plate 3 includes horizontal plate 31 and rigid coupling in the elasticity of horizontal plate 31 downside and absorbs water the pad 32, elasticity absorbs water pad 32 can adopt fire-retardant sponge, elasticity absorbs water and fills the supporting spring 33 that is equipped with a plurality of vertical settings in the pad 32 intussuseption, the equal rigid coupling in horizontal plate 31 in the upper end of each supporting spring 33, 3 downstream of water absorption backing plate, can make one side of elasticity absorb water pad 32 insert in the upside recess 21 of locating door leaf 2. The horizontal rigid coupling of upside of door frame 1 has water tank 4, and the both ends of water tank 4 all vertically down rigid coupling in aqueduct 41, and the both ends that absorb water the pipe can support in two aqueduct 41 and be close to one side each other, and the apopore 411 has been seted up to two aqueduct 41 lower extremes and is close to one side each other, and apopore 411 can butt in the elasticity of elastic backing plate pad 32 that absorbs water. The upper ends of the two water guide pipes 41 are rotatably connected with a rotating shaft 42, the axes of the rotating shaft 42 are horizontally arranged and perpendicular to the length direction of the water absorbing base plate 3, each rotating shaft 42 is fixedly connected with a valve plate 43, and when the valve plates 43 are rotated to be in a horizontal state, the valve plates 43 can seal the water guide pipes 41 to block water in the water tank 4 from flowing into the water guide pipes 41. The connecting rod 44 is fixedly connected to one end of the rotating shaft 42, the sliding grooves 311 are formed in the two ends of the horizontal plate 31 along the length direction of the horizontal plate, and the end, far away from the rotating shaft 42, of the connecting rod 44 can rotate and slide in the sliding grooves 311.

Referring to fig. 3 and 4, when the suction pad plate 3 moves upward to maintain the link 44 in a horizontal state, the valve plate 43 is horizontally disposed, thereby closing the water introduction duct 41. When the water absorption backing plate 3 moves downwards to drive the elastic water absorption pad 32 to be inserted into the groove 21, the supporting spring 33 can prevent the elastic water absorption pad 32 from being compressed excessively, ensure the water absorption of the elastic water absorption pad 32, at the same time, the horizontal plate 31 moves downward, the drag link 44 rotates, thereby driving the rotation shaft 42 to rotate, thereby realizing the rotation of the valve plate 43 and the opening of the water conduit 41, further leading the water flow in the water tank 4 to flow out from the water outlet hole 411 of the water conduit 41 to the elastic water absorption pad 32, the water can be quickly filled in the whole elastic absorbent pad 32 by the water absorption of the elastic absorbent pad 32, and when more water is distributed into the groove 21 of the door leaf 2, the elastic water absorption strip 12 can rapidly absorb the water, so that the door leaf 2 is sealed with the door frame 1, and the smoke is prevented from permeating between the door leaf 2 and the door frame 1 through the elastic water absorption pad 32 and the elastic water absorption strip 12 after absorbing water.

Referring to fig. 3 and 4, a first temperature-sensitive glass bulb 14 is further disposed in the doorframe 1, one end of the first temperature-sensitive glass bulb 14 is fixedly connected to the horizontal plate 31, and the other end of the first temperature-sensitive glass bulb 14 is fixedly connected to the doorframe 1, and in a normal state, the first temperature-sensitive glass bulb 14 can pull the horizontal plate 31, and make the connecting rod 44 in a horizontal state, so that the valve plate 43 is in a horizontal state to seal the aqueduct 41. When the external temperature rises to the first temperature-sensitive glass bulb 14 and is broken, the water absorption backing plate 3 loses the pulling force, the water absorption backing plate 3 automatically falls due to the self weight of the water absorption backing plate, and therefore the water absorption backing plate 3 moves towards the direction of the containing groove 13 of the door leaf 2 until one side of the elastic water absorption backing plate 32 is inserted into the containing groove 13.

Referring to fig. 5 and 6, door leaf 2 includes main fire door body 22, one side rigid coupling of fire door body 22 has reinforcing plate 23, form holding chamber 24 between reinforcing plate 23 and the fire door body 22, the rigid coupling has supporting frame 241 in the holding chamber 24, and holding chamber 24 intussuseption is filled with the fire prevention cotton 242 that absorbs water, the position between fire door body 22 and reinforcing plate 23 is seted up to recess 21, the infiltration hole 25 that communicates with holding chamber 24 is all seted up to the upside and the downside of recess 21, the position rigid coupling that recess 21 corresponds infiltration hole 25 has water-soluble membrane 251. Water-soluble membrane 251 can seal infiltration hole 25 under the normality, avoid external impurity to get into holding chamber 24, back in rivers to recess 21, water will dissolve water-soluble membrane 251, partly rivers flow to holding chamber 24 in from infiltration hole 25, thereby the cotton 242 that absorbs water of fire prevention in the door leaf 2 permeates, thereby the cotton 242 that absorbs water of fire prevention in making the door leaf 2 moistens, and then realize the cooling of door leaf 2, improve the heat resistance of door leaf 2, in addition, the intensity in holding chamber 24 can also be strengthened to the support chassis 241 of adoption.

Referring to fig. 7, holding tank 15 has all been seted up to the both sides of door frame 1, all rotates in the holding tank 15 and is connected with baffle 5, and the axis of rotation 42 line level of baffle 5 sets up, and one side rigid coupling of baffle 5 has to extend door frame 1 and keeps away from the knob 51 of enclosing fender 11 one side, and the axis of rotation of knob 51 and baffle 5 is in same straight line. Both sides of the fireproof door body 22 of the door leaf 2 are provided with blocking grooves 221, and when the baffle 5 is rotated to a horizontal state towards the direction of the door leaf 2, the baffle 5 can be inserted into the blocking grooves 221. The upside rigid coupling of holding tank 15 has two 151 of temperature sensing glass bubble, two 151 of temperature sensing glass bubble and the one end rigid coupling of keeping away from its axis of rotation 42 line of baffle 5, under the normality, two 151 of temperature sensing glass bubble can drag baffle 5 and keep the slope setting, thereby make the one end of being connected with two 151 of temperature sensing glass bubble of baffle 5 set up towards the slope, avoid baffle 5 to rotate, guarantee that baffle 5 is located door frame 1, and then make things convenient for opening of door leaf 2 to close, it is too high when ambient temperature, two 151 of temperature sensing glass bubbles will break automatically, thereby make baffle 5 insert and locate in blocking groove 221, and then realize the firm of door leaf 2 and seal.

The implementation principle of this application embodiment people's air defense door does: under a normal state, the first temperature sensing glass bulb 14 can pull the water absorbing padding plate 3 to the upper side of the containing groove 13 of the door leaf 2, so that the elastic padding plate is prevented from being inserted into the containing groove 13, after the door leaf 2 is closed, the elastic water absorbing strip 12 in the door frame 1 can be inserted into the groove 21 of the door leaf 2, when the external temperature rises to the temperature sensing glass bulb 14 and is broken, the water absorbing padding plate 3 loses the pulling force, the water absorbing padding plate 3 automatically falls due to self weight, so that the water absorbing padding plate 3 moves towards the direction of the containing groove 13 of the door leaf 2 to one side and is inserted into the containing groove 13, the connecting rod 44 is dragged to rotate along with the movement of the water absorbing padding plate 3, the rotating valve plate 43 rotates along with the rotation of the rotating shaft 42, the communication between the water guide pipe 41 and the water tank 4 is realized, water in the water tank 4 flows to the water guide pipe 41 and flows from the water guide pipe 41 to the water absorbing padding plate 3, due to the water absorption of the water absorption backing plate 3, the water is filled in the whole water absorption backing plate 3, and meanwhile, redundant water continuously flows to the positions of the accommodating grooves 13 on the two sides of the door leaf 2 and the position of the accommodating groove 13 on the lower side of the door leaf 2, so that water is absorbed again through the elastic water absorption strip 12 of the door frame 1, and the space between the door leaf 2 and the door frame 1 is sealed through the water absorption backing plate 3 and the elastic water absorption strip 12 after water absorption, so that smoke penetration is avoided;

meanwhile, when the external temperature is too high, the second temperature-sensitive glass bulb 151 will automatically break, so that the blocking plate 5 is inserted into the blocking groove 221, and the door leaf 2 is firmly closed;

in addition, after rivers to the recess 21 in, water will dissolve the melting of membrane 251, and partly rivers flow to holding chamber 24 in from infiltration hole 25 to the cotton 242 that absorb water of preventing fires in the door leaf 2 permeates, thereby makes the cotton 242 that absorb water of preventing fires in the door leaf 2 wet, and then realizes the cooling of door leaf 2, improves the heat resistance of door leaf 2.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a people's air defense door, includes door frame (1) and sets up door leaf (2) in door frame (1), door leaf (2) articulate in door frame (1), be provided with enclosed construction, its characterized in that between door frame (1) and door leaf (2):

the periphery of the door leaf (2) is provided with a groove (21) surrounding the door leaf (2), the upper side of the door frame (1) is provided with a containing groove (13), a water absorption backing plate (3) which is horizontally arranged and one side of which can be inserted into the groove (21) is vertically connected in the containing groove (13) in a sliding manner, a water tank (4) is fixedly arranged on the upper side of the door frame (1), both ends of the water tank (4) are vertically and downwards fixedly connected with water guide pipes (41), both ends of the water absorption backing plate (3) are abutted against one side, close to each other, of the two water guide pipes (41), the lower ends of the two water guide pipes (41) are mutually abutted against one side, a water outlet hole (411) is formed in one side, close to each other, of the two water guide pipes (41), the water outlet hole (411) is abutted against an elastic water absorption pad 32 of the water absorption backing plate (3), the upper ends of the two water guide pipes (41) are rotatably connected with a rotating shaft (42), the water absorption backing plate (3) comprises a horizontal plate (31), and an elastic water absorption pad (32) is fixedly connected to the lower side of the horizontal plate (31);

a valve plate (43) which can seal the water guide pipe (41) in a horizontal state is fixedly connected to the rotating shaft (42), sliding grooves (311) are horizontally formed in two ends of the water absorption base plate (3), a connecting rod (44) is fixedly connected to the end portion of each rotating shaft (42), the other end of each connecting rod (44) is connected into the corresponding sliding groove (311) in a sliding mode, and the sliding grooves (311) are respectively formed in two ends of the horizontal plate (31);

the door frame (1) is also internally provided with a first temperature sensing glass bulb (14), one end of the first temperature sensing glass bulb (14) is fixedly connected to the horizontal plate (31), the other end of the first temperature sensing glass bulb (14) is fixedly connected to the door frame (1), in a normal state, the first temperature sensing glass bulb (14) can pull the horizontal plate (31), the connecting rod (44) is in a horizontal state, and the valve plate (43) is in the horizontal state to seal the aqueduct (41);

when the outside temperature rises to the temperature sensing glass bubble I (14) to be broken, the water absorption backing plate (3) loses the pulling force, and the water absorption backing plate (3) automatically falls down due to the self weight of the water absorption backing plate, so that the water absorption backing plate (3) moves towards the direction of the groove (21) of the door leaf (2) to the position that one side of the elastic water absorption pad (32) is inserted into the groove (21);

elastic water absorbing strips (12) which can be inserted into the grooves (21) of the door leaves (2) are fixedly connected to the two inner sides and the bottom edges of the door frame (1).

2. A civil air defense door according to claim 1, wherein: a plurality of supporting springs (33) are vertically and fixedly connected in the elastic water absorption pad (32), and one ends of the supporting springs (33) are fixedly connected with the horizontal plate (31).

3. A civil air defense door according to claim 1, wherein: door leaf (2) are including main fire door body (22), one side rigid coupling of main fire door body (22) has reinforcing plate (23), form holding chamber (24) between reinforcing plate (23) and the main fire door body (22), holding chamber (24) intussuseption is filled with the fire prevention cotton (242) that absorbs water, position between main fire door body (22) and reinforcing plate (23) is seted up in recess (21), infiltration hole (25) with holding chamber (24) intercommunication are all seted up to the upside and the downside of recess (21).

4. A civil air defense door according to claim 3, wherein: a supporting framework (241) is fixedly connected in the accommodating cavity (24).

5. A civil air defense door according to claim 3, wherein: a water-soluble film (251) is fixedly connected with the position of the groove (21) corresponding to the water seepage hole (25).

6. A civil air defense door according to claim 1, wherein: holding tank (15) have all been seted up to the both sides of door frame (1), holding tank (15) internal rotation is connected with baffle (5) that the axis of rotation level set up, and blocking groove (221) have all been seted up to the both sides of door leaf (2), baffle (5) tend to door leaf (2) direction and rotate and can insert when horizontal state and locate in blocking groove (221).

7. A civil air defense door according to claim 6, wherein: the temperature sensing glass bulb II (151) is fixedly connected to the upper side of one end, close to the door leaf (2), of the accommodating groove (15), the lower end of the temperature sensing glass bulb II (151) is fixedly connected to the baffle (5), and the end, away from the rotating axis of the baffle (5), of the temperature sensing glass bulb II (151) can be pulled and held to be inclined and upwards arranged.

8. A civil air defense door according to claim 7, wherein: one side of the baffle plate (5) is fixedly connected with a knob (51) extending out of the door frame (1), and the rotation axes of the knob (51) and the baffle plate (5) are in the same straight line.

9. A civil air defense door according to claim 1, wherein: one side of the door frame (1) is hinged to one surface of the door leaf (2), the other side of the door frame (1) is fixedly connected with a fence (11) which can abut against the other surface of the door leaf (2), and one side of the fence (11) close to the door leaf (2) is fixedly connected with a fireproof sealing strip.