阅读说明：本技术 防火通道门及其制作工艺 (Fireproof access door and manufacturing process thereof ) 是由 杨玉爱 于 2020-04-30 设计创作，主要内容包括：本发明涉及防火通道门及其制作工艺包括门框,门框的一侧设置有容槽,容槽内容置有门扇,门扇铰接于门框；容槽与门扇均固接有防火膨胀密封条；两防火膨胀密封条均开设有环槽,两防火膨胀密封条的环槽相互拼接呈水道；门框内设置有水箱,门框上侧还设置有与环槽连通的水管,水管的中部水平设置有镂空支撑板,水管的上端设置有缩口管,水管的上端还设置有封堵,封堵直径小于水管孔径,镂空支撑板与封堵之间设置有常态下能够推动封堵封闭缩口管的感温玻璃泡；水箱的出水口与缩口管连通。本发明具有能够有效的达到防火的效果时,还能够防止浓烟的渗透的效果。(The invention relates to a fireproof channel door and a manufacturing process thereof, wherein the fireproof channel door comprises a door frame, wherein one side of the door frame is provided with a containing groove, a door leaf is contained in the containing groove, and the door leaf is hinged to the door frame; the containing groove and the door leaf are fixedly connected with fireproof expansion sealing strips; the two fireproof expansion sealing strips are both provided with ring grooves, and the ring grooves of the two fireproof expansion sealing strips are spliced with each other to form a water channel; a water tank is arranged in the door frame, a water pipe communicated with the annular groove is further arranged on the upper side of the door frame, a hollowed-out support plate is horizontally arranged in the middle of the water pipe, a necking pipe is arranged at the upper end of the water pipe, a plug is further arranged at the upper end of the water pipe, the diameter of the plug is smaller than the aperture of the water pipe, and a temperature-sensitive glass bulb capable of pushing the plug to close the necking pipe in a normal state is arranged between the hollowed-out; the water outlet of the water tank is communicated with the necking pipe. The invention has the effect of effectively achieving the fireproof effect and preventing dense smoke from permeating.)

1. The utility model provides a fire prevention access door, includes door frame (1), its characterized in that: one side of the door frame (1) is provided with a containing groove (11), a door leaf (2) is contained in the containing groove (11), and one side of the door leaf (2) is hinged to the door frame (1); the positions of the containing groove (11) and the door leaf (2) which can be mutually abutted are fixedly connected with fireproof expansion sealing strips (3); annular grooves (31) are formed in the mutually abutted sides of the two fireproof expansion sealing strips (2), and the annular grooves (31) of the two fireproof expansion sealing strips (2) are mutually spliced to form a water channel; a water tank (7) is arranged in the door frame (1), a water pipe (4) communicated with the annular groove (31) is further arranged on the upper side of the door frame (1), and an air hole (32) communicated with the annular groove (31) is further formed in the upper side of the door frame (1); a hollowed-out support plate (41) is horizontally arranged in the middle of the water pipe (4), a conical necking pipe (5) coaxial with the water pipe (4) is arranged at the upper end of the water pipe (4), a conical plug (51) capable of moving upwards to seal the necking pipe (5) is further arranged at the upper end of the water pipe (4), the diameter of the plug (51) is smaller than the aperture of the water pipe (4), and a temperature-sensing glass bulb (6) capable of pushing the plug (51) to seal the necking pipe (5) in a normal state is arranged between the hollowed-out support plate (41) and the plug (51); the water outlet of the water tank (7) is communicated with the necking pipe (5).

2. A fire protection access door in accordance with claim 1, wherein: one side of the door leaf (2) far away from the accommodating groove (11) corresponds to the door leaf (2) and is not hinged with the three sides of the door frame (1) and is fixedly connected with a protection plate (24), and the protection plate (24) can abut against the door frame (1) along with the closing of the door leaf (2).

3. The fire protection access door of claim 1, wherein: the door frame (1) is provided with one side that holds groove (11) and hinges in one side of door frame (1) corresponding door leaf (2) and slides and be connected with can butt in door leaf (2) closing plate (121), still be provided with on door frame (1) and can promote closing plate (121) under the normality and move to sheltering from push away spring (122) of door leaf (2) direction with door frame (1) articulated position department, one side that closing plate (121) kept away from and push away spring (122) still rotates and is connected with roller (123) that the axis is vertical to be set up.

4. The fire protection access door of claim 1, wherein: an access hole (14) through which the water tank (7) can be taken out is formed in one side, away from the containing groove, of the door frame (1), and an access plate (15) capable of sealing the access hole (14) is further arranged at the position, corresponding to the access hole (14), of the door frame (1); a valve (72) capable of sealing the water tank (7) is also arranged between the reducing pipe (5) and the water tank (7); the necking pipe (5) is detachably connected to the water pipe (4), and the water pipe (4) is detachably connected to the door frame (1).

5. The fire protection access door of claim 1, wherein: and arc-shaped positioning frames (52) with arc openings oppositely arranged are fixedly connected to one side of the hollowed-out supporting plate (41) close to the plugging.

6. The fire protection access door of claim 1, wherein: the two sides of the door leaf (2) are provided with panels (21) made of galvanized cold-rolled steel sheets, the inner side of one panel (21) close to the accommodating groove (11) is provided with a fireproof plate (22), and an inorganic fireproof door core (23) is filled between the fireproof plate (22) and the other panel (21).

7. The fire protection access door of claim 6, wherein: the inorganic fire door core (23) comprises magnesium oxide, magnesium sulfate, and fiber filaments.

8. The fire protection access door of claim 1, wherein: the door frame (1) is made of a galvanized cold-rolled steel sheet.

9. A manufacturing process of a fireproof channel door is characterized by comprising the following steps: the method comprises the following steps:

step one, forming each part of a door frame and a door leaf, designing each part drawing according to the door frame and the door leaf to be processed, and selecting a steel plate to perform plate shearing, stamping and bending according to each part drawing to form each part forming;

step two, assembling and welding the door frame, namely assembling and welding all parts of the door frame to form the door frame;

step three, filling, gluing and hot pressing of the door leaf, filling a fireproof plate and an inorganic fireproof door core in the door leaf, and gluing and hot pressing;

fourthly, assembling and welding the door leaf, namely assembling and welding all parts of the door leaf to form the door leaf;

step five, finishing the door leaf and the door frame, and polishing and filling the surfaces of the door frame and the door leaf respectively;

sixthly, treating the surfaces of the door leaf and the door frame, and respectively carrying out plastic spraying and drying treatment on the door leaf and the door frame;

step seven, respectively inspecting the door leaf and the door frame, and respectively inspecting the door leaf and the door frame to ensure the strength and the dimensional accuracy of the door leaf and the door frame;

step eight, assembling the door leaf and the door frame, namely assembling the door leaf and the door frame which are qualified through inspection by adopting a fireproof hinge, and respectively fixing fireproof expansion sealing strips at contact positions of the door leaf and the door frame;

step nine, grooving the fireproof expansion sealing strips, namely grooving annular grooves at corresponding positions of the two fireproof expansion sealing strips of the door frame and the door leaf, and ensuring that the annular grooves of the two fireproof expansion sealing strips can be spliced to form a whole annular groove;

step ten, inspecting the assembled door leaf and door frame, inspecting the assembled door frame and door leaf, detecting indexes such as fire resistance, smoke resistance and heat resistance, and ensuring the door leaf and door leaf to be qualified;

step eleven, installing a water tank of a door frame, opening an access hole on the upper side of the door frame, connecting a water pipe in the door frame, arranging a water hole communicated with the water pipe on a fireproof expansion sealing strip on the upper side of the door frame, fixing a conical necking pipe on the water pipe, fixing a hollow support plate in the middle of the water pipe, arranging a conical plug with the diameter smaller than the aperture of the water pipe at the lower end of the necking pipe, placing a temperature-sensitive glass bulb capable of pushing the plug to seal the necking pipe between the plug and the hollow support plate, preparing the water tank according to the size of the door frame, placing the water tank in the door frame, communicating a water outlet of the water tank with the necking pipe, and finally sealing the;

and step twelve, final detection, namely, detecting the door leaf and the door frame again after the door leaf and the door frame are closed, and ensuring that the quality of the door leaf and the door frame is qualified.

10. The process of making a fire protection access door of claim 9, wherein: before door frame and door leaf were assembled and welded respectively, the atress condition when analysis waited to process door frame and door leaf used welds the reinforcement to mainly playing support and the more part of atress, and the reinforcement can be floor or strengthening rib.

Technical Field

The invention relates to the technical field of fireproof doors, in particular to a fireproof passage door and a manufacturing process thereof.

Background

The existing fireproof door arranged at the position where people often pass in a building is suitable for being a normally-open fireproof door. The normally-open fireproof door can be automatically closed in a fire disaster in hundreds of times, and has a signal feedback function. The fire door of the evacuation walkway at the fire separation or fire zone should be a normally open fire door, which is defined based on the evacuation walkway being the main walkway for people to pass through under normal circumstances.

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.

The above-mentioned fire door is a fire door, and although fire prevention can be achieved when a danger occurs, dense smoke may still permeate through a gap between the fire door and a door frame.

Disclosure of Invention

Aiming at the defects in the prior art, one purpose of the invention is to provide a fireproof passage door which can effectively achieve the fireproof effect and also can prevent the permeation of dense smoke.

The above object of the present invention is achieved by the following technical solutions:

a fireproof channel door comprises a door frame, wherein one side of the door frame is provided with a containing groove, a door leaf is contained in the containing groove, and one side of the door leaf is hinged to the door frame; the positions of the accommodating groove and the door leaf which can be mutually abutted are fixedly connected with fireproof expansion sealing strips; annular grooves are formed in the mutually abutted sides of the two fireproof expansion sealing strips, and the annular grooves of the two fireproof expansion sealing strips are mutually spliced to form a water channel; a water tank is arranged in the door frame, a water pipe communicated with the annular groove is further arranged on the upper side of the door frame, and an air hole communicated with the annular groove is further formed in the upper side of the door frame; the middle part of the water pipe is horizontally provided with a hollowed-out support plate, the upper end of the water pipe is provided with a conical necking pipe which is coaxial with the water pipe, the upper end of the water pipe is also provided with a conical plug which moves upwards and can seal the necking pipe, the diameter of the plug is smaller than the aperture of the water pipe, and a temperature-sensitive glass bulb which can push the plug to seal the necking pipe under a normal state is arranged between the hollowed-out support plate and the plug; the water outlet of the water tank is communicated with the necking pipe.

Through adopting above-mentioned technical scheme, after closing the door leaf, when the intensity of a fire was lighted, the heat was through when transmitting to the temperature sensing glass bubble to the door frame, the liquid inflation bursts in the temperature sensing glass bubble, the shutoff loses the holding power and directly falls down, thereby lead to throat pipe and water pipe intercommunication, rivers in the water tank will directly go out from the water pipe, then flow to the door leaf in the water course that the fire prevention expansion sealing strip of door frame constitutes, through the gas pocket, make air can circulate in the water course, guarantee that the rivers fill up the water course, and then realize the sealed of door leaf and door frame through the water course, on the one hand, further isolated smog is revealed from between door leaf and the door frame, on the other hand rivers also can be moist to fire prevention expansion sealing strip, further its fire behavior that increases.

The present invention in a preferred example may be further configured to: and a protection plate is fixedly connected to the side, far away from the accommodating groove, of the door leaf corresponding to the three side edges of the door frame, wherein the door leaf is not hinged to the door frame, and the protection plate can be abutted against the door frame along with the closing of the door leaf.

Through adopting above-mentioned technical scheme, in the appearance inslot of rotating door leaf to door frame, make the door leaf close the back, the guard plate of door leaf side can butt in the door frame to through the further sealed door leaf of guard plate and the joint line of door frame.

The present invention in a preferred example may be further configured to: the door frame is characterized in that one side of the door frame, which is provided with the containing groove, corresponds to one side of the door leaf hinged to the door frame, and is connected with a sealing plate capable of being abutted against the door leaf in a sliding manner, the door frame is further provided with a push spring capable of pushing the sealing plate to move towards the door leaf direction to the position where the door leaf is shielded from being hinged to the door frame in a normal state, and one side of the sealing plate, which is far away from the push spring, is further.

Through adopting above-mentioned technical scheme, when rotating the door leaf and opening the door leaf, along with the rotation of door leaf, can roll along the door leaf through the roller to make the closing plate retract, realize the rotation of door leaf, after the door leaf loses the atress, push away the spring and will promote the closing plate and tend towards the door leaf direction motion, thereby promote door leaf self-closing, and after the door leaf closed, the closing plate also can directly seal the joint seam of door leaf and door frame.

The present invention in a preferred example may be further configured to: an access hole through which the water tank can be taken out is formed in one side, away from the containing groove, of the door frame, and an access plate capable of sealing the access hole is further arranged at the position, corresponding to the access hole, of the door frame; a valve capable of sealing the water tank is also arranged between the necking pipe and the water tank; the necking pipe is detachably connected to the water pipe, and the water pipe is detachably connected to the door frame.

Through adopting above-mentioned technical scheme, after using a period, can open the access panel, observe the state of water tank and temperature sensing glass bubble through the access hole, guarantee that it can normal use, secondly, when needs are changed, also can directly take out the water tank water pipe from the door frame to convenient realization water tank fills the change of water and temperature sensing glass bubble.

The present invention in a preferred example may be further configured to: and one side of the hollowed-out supporting plate, which is close to the plugging part, is fixedly connected with an arc positioning frame with an arc opening arranged oppositely.

Through adopting above-mentioned technical scheme, the locating rack of adoption can realize the location of temperature sensing glass bubble in the water pipe, prevents that temperature sensing glass bubble from moving, avoids temperature sensing glass bubble to produce because of the collision and breaks.

The present invention in a preferred example may be further configured to: the both sides of door leaf all are provided with the panel of zinc-plated cold-rolled steel sheet material, and a panel inboard that is close to the appearance groove is provided with the PLASTIC LAMINATED, PLASTIC LAMINATED and another it has inorganic fire door core to fill between the panel.

Through adopting above-mentioned technical scheme, the fire behavior of door leaf has been guaranteed to the zinc-plated cold-rolled steel sheet and PLASTIC LAMINATED and inorganic fire door core of adoption.

The present invention in a preferred example may be further configured to: the inorganic fire door core comprises magnesium oxide, magnesium sulfate and cellosilk.

By adopting the technical scheme, the fireproof performance of the inorganic fireproof door core can be ensured.

The present invention in a preferred example may be further configured to: the door frame is made of a galvanized cold-rolled steel sheet.

Through adopting above-mentioned technical scheme, improved the corrosion resistance of door frame, prevented that the door frame from rustting.

The second aim of the invention is realized by the following technical scheme:

a manufacturing process of a fireproof channel door comprises the following steps:

step one, forming each part of a door frame and a door leaf, designing each part drawing according to the door frame and the door leaf to be processed, and selecting a steel plate to perform plate shearing, stamping and bending according to each part drawing to form each part forming;

step two, assembling and welding the door frame, namely assembling and welding all parts of the door frame to form the door frame;

step three, filling, gluing and hot pressing of the door leaf, filling a fireproof plate and an inorganic fireproof door core in the door leaf, and gluing and hot pressing;

fourthly, assembling and welding the door leaf, namely assembling and welding all parts of the door leaf to form the door leaf;

step five, finishing the door leaf and the door frame, and polishing and filling the surfaces of the door frame and the door leaf respectively;

sixthly, treating the surfaces of the door leaf and the door frame, and respectively carrying out plastic spraying and drying treatment on the door leaf and the door frame;

step seven, respectively inspecting the door leaf and the door frame, and respectively inspecting the door leaf and the door frame to ensure the strength and the dimensional accuracy of the door leaf and the door frame;

step eight, assembling the door leaf and the door frame, namely assembling the door leaf and the door frame which are qualified through inspection by adopting a fireproof hinge, and respectively fixing fireproof expansion sealing strips at contact positions of the door leaf and the door frame;

step nine, grooving the fireproof expansion sealing strips, namely grooving annular grooves at corresponding positions of the two fireproof expansion sealing strips of the door frame and the door leaf, and ensuring that the annular grooves of the two fireproof expansion sealing strips can be spliced to form a whole annular groove;

step ten, inspecting the assembled door leaf and door frame, inspecting the assembled door frame and door leaf, detecting indexes such as fire resistance, smoke resistance and heat resistance, and ensuring the door leaf and door leaf to be qualified;

eleven, the installation of a water tank of a door frame, an access hole is formed in the upper side of the door frame, a water pipe is connected into the door frame, a water hole communicated with the water pipe is formed in a fireproof expansion sealing strip on the upper side of the door frame, an air hole extending out of the inner frame inner wall is formed in the fireproof expansion sealing strip on the upper side of the door frame, a conical necking pipe is fixed onto the water pipe after heating, a hollowed-out supporting plate is fixed onto the middle of the water pipe, a conical plug with the diameter smaller than the aperture of the water pipe is arranged at the lower end of the necking pipe, a temperature sensing glass bulb capable of pushing the plug to seal the necking pipe is placed between the plug and the hollowed-out supporting plate, the water tank is prepared according to the size of the door frame, the.

And step twelve, final detection, namely, detecting the door leaf and the door frame again after the door leaf and the door frame are closed, and ensuring that the quality of the door leaf and the door frame is qualified.

Through adopting above-mentioned technical scheme, after closing the door leaf, when the intensity of a fire was lighted, the heat was through when transmitting to the temperature sensing glass bubble to the door frame, the liquid inflation bursts in the temperature sensing glass bubble, the shutoff loses the holding power and directly falls down, thereby lead to throat pipe and water pipe intercommunication, rivers in the water tank will directly go out from the water pipe, then flow to the door leaf in the water course that the fire prevention expansion seal strip of door frame constitutes, and fill up the water course, and further realize the sealed of door leaf and door frame through the water course, on the one hand, further isolated smog is revealed from between door leaf and the door frame, on the other hand rivers also can be moistened to fire prevention expansion seal strip, further its fire proofness of increase.

The present invention in a preferred example may be further configured to: before door frame and door leaf were assembled and welded respectively, the atress condition when analysis waited to process door frame and door leaf used welds the reinforcement to mainly playing support and the more part of atress, and the reinforcement can be floor or strengthening rib.

Through adopting above-mentioned technical scheme, the intensity of improvement door frame and door leaf that can step forward through the reinforcement that adopts prolongs its life.

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

1. after the door leaf is closed, when the fire is ignited, heat is transferred to the temperature-sensing glass bulb through the door frame, liquid in the temperature-sensing glass bulb expands and bursts, the plug loses the supporting force and directly falls down, so that the necking pipe is communicated with the water pipe, water flow in the water tank directly flows out of the water pipe and then flows into a water channel formed by the door leaf and a fireproof expansion sealing strip of the door frame, air in the water channel can circulate through the air holes, the water channel is ensured to be filled with the water flow, and the door leaf and the door frame are sealed through the water channel;

2. when the door leaf is rotated to open the door leaf, the sealing plate can roll along the door leaf through the roller shaft along with the rotation of the door leaf, so that the sealing plate retracts, the rotation of the door leaf is realized, after the door leaf loses stress, the pushing spring pushes the sealing plate to move towards the direction of the door leaf, so that the door leaf is pushed to be automatically closed, and after the door leaf is closed, the sealing plate can also directly seal a connecting joint between the door leaf and a door frame;

3. after using a period, can open the access panel, observe the state of water tank and temperature sensing glass bubble through the access hole, guarantee that it can normal use, secondly, when needs are changed, also can directly take out the water tank water pipe from the door frame to convenient realization water tank fills the change of water and temperature sensing glass bubble.

Drawings

Figure 1 is a schematic diagram of the overall structure of a tunnel fire door.

Fig. 2 is a sectional view of the door leaf structure.

Fig. 3 is a schematic view of the structure of the fireproof expansion sealing strip.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.

Figure 5 is a schematic view of a service panel construction.

In the figure, 1, a door frame; 11. a containing groove; 12. a sliding groove; 121. a closing plate; 122. pushing a spring; 123. a roll shaft; 13. a water pore; 14. an access hole; 15. an access panel; 2. a door leaf; 21. a panel; 22. a fire-proof plate; 23. an inorganic fire door core; 24. a protection plate; 3. a fire-resistant intumescent sealing strip; 31. a ring groove; 32. air holes; 4. a water pipe; 41. hollowing out the supporting plate; 5. a necking pipe; 51. plugging; 52. an arc-shaped positioning frame; 6. a temperature-sensitive glass bulb; 7. a water tank; 71. connecting pipes; 72. and (4) a valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the fireproof channel door disclosed by the invention comprises a door frame 1, wherein the overall section of the door frame 1 is in an L shape, so that a recessed accommodating groove 11 is formed in one side of the door frame 1, a door leaf 2 is accommodated in the accommodating groove 11, the thickness of the door leaf 2 is the same as the depth of the accommodating groove 11, one side of the door leaf 2 is hinged to the door frame 1, fireproof expansion sealing strips 3 are fixedly connected to the positions, which can be mutually abutted, of the accommodating groove 11 of the door frame 1 and the door leaf 2, and when the door leaf 2 is closed, the door leaf 2 and the fireproof expansion sealing strips 3 of the door frame 1 can be mutually.

The door frame 1 is made of a galvanized cold-rolled steel sheet; the door leaf 2 is including being located the panel 21 of door leaf 2 both sides respectively, can rotate to one side rigid coupling of panel 21 in the appearance groove 11 and have PLASTIC LAMINATED 22, and PLASTIC LAMINATED 22 is located between two panels 21, and panel 21 adopts the zinc-plated cold-rolled steel sheet, and it has inorganic fire door core 23 to fill between PLASTIC LAMINATED 22 and another panel 21, and inorganic fire door core 23 includes magnesium oxide, magnesium sulfate and cellosilk and adopts the binder to make.

One side rigid coupling that holds groove 11 is kept away from to door leaf 2 has a guard plate 24, and guard plate 24 surrounds door leaf 2 and does not extend door leaf 2 side with door frame 1 articulated three sides, when rotating door leaf 2 to door frame 1 hold the inslot 11 in, guard plate 24 can butt in door frame 1 along with closing of door leaf 2. The door frame 1 is provided with the position that holds groove 11 and has still seted up sliding groove 12, sliding groove 12 sets up in door leaf 2 and door frame 1 articulated one side and is in same vertical face with door frame 1, be provided with the closing plate 121 that can tend to the door leaf 2 direction and slide in sliding groove 12, it has the spring 122 that pushes away of the horizontal setting of many axis still to rigid coupling in sliding groove 12, under the normality, it can promote the direction motion that closing plate 121 tended door leaf 2 to push away spring 122, thereby make closing plate 121 seal the articulated position department of door leaf 2 and door frame 1, one side that closing plate 121 kept away from and pushed away spring 122 still rotates the roller 123 that is connected with the vertical setting of axis. When the door leaf 2 is rotated to the accommodating groove 11 of the door frame 1, after the door leaf 2 is closed, the protection plate 24 on the side of the door leaf 2 can abut against the door frame 1, so that the connection seam between the door leaf 2 and the door frame 1 is further sealed through the protection plate 24, in addition, when the door leaf 2 is opened through the door leaf 2, the door leaf 2 can roll along with the rotation of the door leaf 2 through the roller shaft 123, so that the closing plate 121 retracts, the rotation of the door leaf 2 is realized, when the door leaf 2 loses stress, the pushing spring 122 pushes the closing plate 121 to move towards the direction of the door leaf 2, so that the door leaf 2 is pushed to be automatically closed, and when the door leaf 2 is closed, the closing plate 121 also can directly seal the connection seam between the door leaf.

Referring to fig. 3 and 4, the circular grooves 31 with semicircular cross sections are formed in the abutted sides of the two fireproof expansion sealing strips 3 of the door leaf 2 and the door frame 1, and after the door leaf 2 is closed, the corresponding circular grooves 31 of the two fireproof expansion sealing strips 3 can be spliced with each other to form a water channel surrounding the door leaf 2; the upper side of the door frame 1 is also provided with an air hole 32 communicated with the annular groove 31, the inside of the upper side of the door frame 1 is also in threaded connection with a water pipe 4, the waterproof rubber strip of the door frame 1 is provided with a water hole 13 corresponding to the position of the water pipe 4, the water hole 13 can be communicated with the water pipe 4, the upper end of the water pipe 4 is in threaded connection with a necking pipe 5, the necking pipe 5 is conical, the aperture of the lower end of the reducing pipe 5 is the same as that of the water pipe 4, the aperture of the upper end of the reducing pipe 5 is smaller than that of the water pipe 4, the middle part of the water pipe 4 is fixedly connected with a horizontally arranged hollow support plate 41, the lower end of the reducing pipe 5 is also provided with a plug 51, the plug 51 is conical, and the plugging 51 moves upwards to abut against the inner wall of the reducing pipe 5 along with the fact that the major diameter of the plugging 51 is smaller than the aperture of the water pipe 4, so that the closing of the reducing pipe 5 and the water pipe 4 can be realized, when the plug 51 moves downward and is separated from abutting against the inner wall of the reducing pipe 5, the reducing pipe 5 and the water pipe 4 can be sealed.

The arc locating rack 52 with the arc mouth set up relatively is all fixedly connected to one side that fretwork backup pad 41 and shutoff 51 are close to each other, is provided with temperature sensing glass bubble 6 between two arc locating racks 52, and 6 upper ends butt in the arc locating rack 52 of shutoff 51 of temperature sensing glass bubble, and the lower extreme butt of temperature sensing glass bubble 6 is in the arc locating rack 52 of fretwork backup pad 41, and temperature sensing glass bubble 6 can promote shutoff 51 upside butt in the 5 inner walls of throat pipe under the normality, closes the intercommunication of throat pipe 5 and water pipe 4. In addition, the arc locating rack 52 can realize the location of the temperature sensing glass bulb 6 in the water pipe 4, prevent the movement of the temperature sensing glass bulb 6, avoid the temperature sensing glass bulb 6 from breaking due to collision, and when the external temperature is too high and is transmitted to the temperature sensing glass bulb 6, the liquid in the temperature sensing glass bulb 6 expands and bursts, and the plugging 51 loses the supporting force and directly falls down, thereby leading to the communication of the necking pipe 5 and the water pipe 4.

The inside water tank 7 that still is provided with of door frame 1 upside, and the delivery port of water tank 7 rotates and is connected with connecting pipe 71, and connecting pipe 71 middle part rigid coupling has the valve 72 that can seal or open connecting pipe 71, and the other end threaded connection of connecting pipe 71 is in the one end that the water pipe 4 was kept away from to throat pipe 5. An access opening 14 through which the water tank 7 can be taken out is formed in one side, far away from the accommodating groove 11, of the door frame 1, an access panel 15 (refer to fig. 5) capable of sealing the access opening 14 is further arranged at the position, corresponding to the access opening 14, of the door frame 1, and the access panel 15 is connected to the door frame 1 through bolts. Liquid inflation bursts in temperature sensing glass bubble 6, behind throat pipe 5 and the 4 intercommunication of water pipe, rivers in the water tank 7 will be directly from throat pipe 5 to water pipe 4, then, 13 flows to in the water course that door leaf 2 and door frame 1's fire prevention expansion sealing strip 3 constitute in the rethread water hole, and fill up the water course, and then realize door leaf 2 and door frame 1's sealing through the water course, on the one hand, further isolated smog is revealed from between door leaf 2 and door frame 1, on the other hand rivers also can be moistened fire prevention expansion sealing strip 3, further its fire proofness of increase.

The implementation principle of the embodiment is as follows: after the door leaf 2 is closed, the temperature sensing glass bulb 6 can push the upper side of the plug 51 to abut against the inner wall of the reducing pipe 5 in a normal state, and the communication between the reducing pipe 5 and the water pipe 4 is closed; when the intensity of a fire is lighted, the heat is through when to door frame 1 transmission to temperature sensing glass bubble 6, the liquid expansion bursts in the temperature sensing glass bubble 6, shutoff 51 loses the holding power and directly falls down, thereby lead to throat pipe 5 and water pipe 4 intercommunication, rivers in the water tank 7 will directly go out from water pipe 4, rethread water hole 13 flows to in the water course that door leaf 2 and door frame 1's fire prevention expansion sealing strip 3 constitute, guarantee the circulation of air in the water course through gas pocket 32, and then guarantee that the rivers fill up the water course, and then realize door leaf 2 and door frame 1's sealed through the water course, on the one hand, further isolated smog is revealed from between door leaf 2 and door frame 1, on the other hand rivers also can be moist to fire prevention expansion sealing strip 3, further its fire proofness of increase. After using a period of time, can also open access panel 15, observe water tank 7 and temperature sensing glass bubble 6's state through access hole 14, guarantee that it can normal use, secondly, when needs are changed, also can directly take out water tank 7 water pipe 4 from door frame 1 to convenient realization water tank 7 fills water and temperature sensing glass bubble 6's change.