A fire door

Abstract

The present invention relates to the field of door processing, and more specifically to a fire door, which includes a central drive shaft, two side limit sliders, two longitudinal limit sliders, two caulking devices, and a three-layer door body. The upper and lower ends of the central drive shaft respectively drive the two side limit sliders through meshing transmission, and the left and right ends of the central drive shaft respectively drive the two longitudinal limit sliders through meshing transmission. The central drive shaft and the two caulking devices are both rotatably arranged in the three-layer door body. The three-layer door body includes an inner door, a middle frame, an outer door, and a plurality of support connection seats. A plurality of support connection seats are evenly fixed on the inner wall of the middle frame, and the outer door and the inner door are respectively fixed at the front and rear ends of the support connection seats. There are insertion gaps between the middle frame and the inner door and the outer door; a plurality of limit chutes are arranged in both the inner door and the outer door; the beneficial effect of the present invention is that the gaps existing in the door body can be closed through double-layer emergency operations, isolating the inflow of fire and smoke, and effectively ensuring life safety.

Description

Technical Field

[0001] The present invention relates to the field of door processing, and more specifically to a fire door. Background Art

[0002] A fire door, as the name implies, is a safety door with fire prevention function. Usually used as a door, in case of an emergency fire, the fire door can prevent fire and smoke, reduce the inflow of smoke and threaten life safety, and gain more time for rescue; Patent No. 202010054439.8 discloses a smoke-proof fire door, including a door frame and a door body hinged to the door frame. One side of the door body protrudes with a vertically arranged fire prevention edge, and the thickness of the fire prevention edge is less than the thickness of the door frame. A sunken groove for the fire prevention edge to enter is provided at the position of the door frame corresponding to the fire prevention edge. The hinge point of the door body and the door frame is arranged on the fire prevention edge; grooves communicating with each other are provided on the top surface, bottom surface and the side surface far from the hinge point of the door body, and water sacs distributed along the grooves are buried in the grooves; a water supply pipe communicating with the water sacs is buried in the door body, and one end of the water supply pipe extending out of the door body is located between the fire prevention edge and the sunken groove. By adopting the above technical solution, the water supply pipe supplies water to the water sacs to make the water sacs expand, so as to fill the gap between the door body and the door frame through the expanded water sacs, achieving the effect of smoke isolation, reducing the gap between the peripheral surface of the fire door and the door frame, which is beneficial to improving the smoke isolation performance of the fire door and protecting people's lives and property safety. However, the use of this device requires the provision of stored water, which is not convenient for daily use. Summary of the Invention

[0003] The purpose of the present invention is to provide a fire door, and its beneficial effect is to close the gaps existing in the door body through a double-layer emergency operation, isolate the inflow of fire and smoke, and effectively ensure life safety.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] The purpose of the present invention is a fire door, including a central drive shaft, two side limit sliders, two longitudinal limit sliders, two seam fillers and a three-layer door body. The upper and lower ends of the central drive shaft respectively drive two side limit sliders through meshing transmission, and the left and right ends of the central drive shaft respectively drive two longitudinal limit sliders through meshing transmission. The central drive shaft and the two seam fillers are both rotatably arranged in the three-layer door body.

[0006] The three-layer door body includes an inner door, a middle frame, an outer door and a plurality of support connection seats. A plurality of support connection seats are uniformly fixed on the inner wall of the middle frame. The front and rear ends of the support connection seats respectively fix the outer door and the inner door. There are insertion gaps between the middle frame and the inner door and the outer door; a plurality of limit chutes are arranged in both the inner door and the outer door.

[0007] The side end of the middle frame is hinged through a hinge in the door frame of a fixed door body installed in the wall body, and inner sealing slots are uniformly arranged in the door frame.

[0008] An outer sealing plug board and an inner sealing plug board for closing the side end are fixed on the side limit sliding seat, and a longitudinal outer sealing plug board and a longitudinal inner sealing plug board for closing the longitudinal end are fixed on the longitudinal limit sliding seat.

[0009] Both the outer sealing plug board and the inner sealing plug board slide within the support connection seat, and the outer sealing plug board, the inner sealing plug board, the longitudinal outer sealing plug board, and the longitudinal inner sealing plug board all slide and are inserted into the insertion slots between the middle frame, the inner door, and the outer door.

[0010] By hinging and fixing the three-layer door body at the doorway of the room to be installed, in case of thick smoke or a fire in the corridor, to prevent thick smoke from invading, the central drive shaft is rotated by an inner hexagon tool, so that the two side limit sliding seats and the two longitudinal limit sliding seats displace in the same direction towards the surroundings. After reaching the specified positions, the two caulking devices are rotated by the inner hexagon tool to fill and seal the four right angles of the two side limit sliding seats and the two longitudinal limit sliding seats. Thus, the double-layer frame-shaped structure seals the gaps around the door body, locks them, and through the double-sided setting, first isolates high temperature and then isolates thick smoke, ensuring that the fire and thick smoke outside or in the corridor cannot enter the room through the large door, thereby achieving the effects of fire prevention and thick smoke prevention. At the same time, it is simple to install and convenient to operate, and is suitable for household anti-theft doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural view of the interior of the door body of the present invention;

[0012] Figure 2 is a schematic structural view of the horizontal closing drive of the present invention;

[0013] Figure 3 is a schematic structural view of the longitudinal drive and closing of the present invention;

[0014] Figure 4 is a first schematic structural view of the caulking device of the present invention;

[0015] Figure 5 is a second schematic structural view of the caulking device of the present invention;

[0016] Figure 6 is a schematic overall structural view of the three-layer door body of the present invention;

[0017] Figure 7 is a first schematic structural view of the three-layer door body of the present invention;

[0018] Figure 8 is a second schematic structural view of the three-layer door body of the present invention;

[0019] Figure 9 is a third schematic structural view of the three-layer door body of the present invention;

[0020] Figure 10 is a schematic structural view of the door frame of the present invention;

[0021] Figure 11 is the first schematic structural view of the whole of the present invention;

[0022] Figure 12 is the second schematic structural view of the whole of the present invention.

[0023] In the figure: central drive shaft 1; side limit slide 2; longitudinal limit slide 3; seam filler 4; outer side sealing insertion plate 5; inner side sealing insertion plate 6; longitudinal outer sealing insertion plate 7; longitudinal inner sealing insertion plate 8; drive shaft 9; eccentric drive disc 10; articulated drive rod 11; central articulated limit slide 12; side drive articulated rod 13; inclined sliding right-angle seat 14; front supplementary right-angle insertion plate 15; rear supplementary right-angle insertion plate 16; three-layer door body 17; inner door 18; middle frame 19; outer door 20; multiple support connection seats 21; door frame 22; sealing slot 23. Detailed implementation manners

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] As shown in the embodiments shown here,

[0026] By hingedly fixing the three-layer door body 17 at the door opening of the room to be installed, when there is thick smoke or a fire in the corridor, to avoid the intrusion of thick smoke, the central drive shaft 1 is rotated by an inner hexagon tool, and then the two side limit slides 2 and the two longitudinal limit slides 3 are displaced in the same direction around the perimeter. After reaching the specified positions, the two seam fillers 4 are rotated by the inner hexagon tool to fill and seal the four right-angle corners of the two side limit slides 2 and the two longitudinal limit slides 3. Thus, a double-layer frame-shaped structure is used to seal and lock the gaps around the door body. Through the bilateral setting, high temperature is isolated first and then thick smoke is isolated, so as to ensure that the fire and thick smoke outside or in the corridor cannot enter the room through the door, thereby achieving the effects of fire prevention and thick smoke prevention. At the same time, the installation is simple and the operation is convenient, which is suitable for household anti-theft doors.

[0027] Further optimize in combination with the above embodiments:

[0028] Further according to Figure 6 、 Figure 7 、 Figure 8 and Figure 9 The working process of a fire door example shown is:

[0029] The three - layer door body 17 is composed of an inner door 18, a middle frame 19, an outer door 20 and multiple support connection seats 21. The outer door 20 made of stainless steel is set at the outer end for high - temperature protection. The door body is used by operating the inner door 18 indoors. The three - layer setting provides convenient insertion slots for closed sliding insertion to avoid operation interference.

[0030] Further optimization in combination with the above - mentioned embodiments:

[0031] Furthermore, according to Figure 6 、 Figure 10 、 Figure 11 and Figure 12 The working process of a fire - door example is as follows:

[0032] By installing the door frame in the wall, it is convenient for the installation and use of the door body. At the same time, through the inner sealing slot 23 set in the door frame 22, it is convenient for closed insertion and sealing effect, which is suitable for operating the door body for fire and smoke prevention in case of emergency.

[0033] Further optimization in combination with the above - mentioned embodiments:

[0034] Furthermore, according to Figure 1 、 Figure 2 、 Figure 3 and Figure 11 The working process of a fire - door example is as follows:

[0035] By rotating the central drive shaft 1 with an inner - hexagon tool, the side limit sliders 2 on both sides move the outer sealing plug 5 and the inner sealing plug 6 outwards and insert them into the sealing slot 23. At the same time, the two longitudinal limit sliders 3 are synchronously driven to move the longitudinal outer sealing plug 7 and the longitudinal inner sealing plug 8 outwards and insert them into the sealing slot 23, so that the outer sealing plug 5, the inner sealing plug 6, the longitudinal outer sealing plug 7 and the longitudinal inner sealing plug 8 are all inserted into the sealing slot 23 for closing in case of emergency.

[0036] Further optimization in combination with the above - mentioned embodiments:

[0037] Furthermore, according to Figure 2 、 Figure 3 、 Figure 7 and Figure 8 The working process of a fire - door example is as follows:

[0038] The sliding of the outer sealing plug 5 and the inner sealing plug 6 is facilitated by the sliding grooves on the support connection seat 21 to avoid interference. Through the insertion slots between the middle frame 19, the inner door 18 and the outer door 20, the outer sealing plug 5, the inner sealing plug 6, the longitudinal outer sealing plug 7 and the longitudinal inner sealing plug 8 can be added in all directions without interference.

[0039] Further optimization in combination with the above embodiments:

[0040] Furthermore, the seam mender 4 includes a drive shaft 9, an eccentric drive disk 10, an articulated drive rod 11, a central articulated limit slide 12, two side drive articulated rods 13, two inclined sliding right-angle seats 14, two front supplementary right-angle plug boards 15, and two rear supplementary right-angle plug boards 16. The drive shaft 9 rotates inside the inner door 18 and the outer door 20. The eccentric drive disk 10 is fixed on the drive shaft 9. The eccentric part of the eccentric drive disk 10 is articulated with the central articulated limit slide 12 through the articulated drive rod 11. The central articulated limit slide 12 longitudinally slides inside the limit chute of the inner door 18 and the outer door 20 through a limit slider. The central articulated limit slide 12 is articulated with the two inclined sliding right-angle seats 14 respectively through the two side drive articulated rods 13. Both of the two inclined sliding right-angle seats 14 slide inside the inclined limit chute of the inner door 18 and the outer door 20 through limit sliders. The front supplementary right-angle plug board 15 and the rear supplementary right-angle plug board 16 for right-angle parts are fixed on the inclined sliding right-angle seat 14.

[0041] This part is based on Figure 4 , Figure 5 , Figure 11 and Figure 12 The working process of a fire door example shown is as follows:

[0042] Drive the drive shaft 9 to rotate through an inner hexagon tool, and then displace the central articulated limit slide 12 through the eccentric drive disk 10 and the articulated drive rod 11. Through the two articulated side drive articulated rods 13, further drive the two inclined sliding right-angle seats 14 to displace along the inclined direction through the limit blocks. Then, in an emergency, the two inclined sliding right-angle seats 14 are added. Insert the two front supplementary right-angle plug boards 15 and the two rear supplementary right-angle plug boards 16 into the inner seal slot 23 through the insertion seam between the middle frame 19, the inner door 18, and the outer door 20, and form a double-layer frame full-round enclosure with the outer seal plug board 5, the inner seal plug board 6, the longitudinal outer seal plug board 7, and the longitudinal inner seal plug board 8 to achieve the drive adjustment for fire and smoke prevention.

[0043] Further optimization in combination with the above embodiments:

[0044] Furthermore, the two central articulated limit slides 12, the four inclined sliding right-angle seats 14, the two side limit slides 2, and the two longitudinal limit slides 3 all slide between the inner door 18 and the outer door 20 through limit sliders.

[0045] This part is based on Figure 7 , Figure 8 , Figure 9 and Figure 11 The working process of a fire door example shown is as follows:

[0046] By means of a plurality of limiting sliding grooves provided between the inner door 18 and the outer door 20, it is convenient to limit the sliding drive of the two central hinge limiting sliding seats 12, the four inclined sliding right-angle seats 14, the two side limiting sliding seats 2 and the two longitudinal limiting sliding seats 3, avoiding deviation; at the same time, sealing grooves are provided on the two side limiting sliding seats 2, the two longitudinal limiting sliding seats 3 and the four inclined sliding right-angle seats 14. After the drive reaches the position, a seal is formed between the inner door 18, the middle frame 19 and the outer door 20, preventing smoke from flowing into the interior of the door body.

[0047] Further optimization in combination with the above embodiments:

[0048] Furthermore, the outer door 20, the two outer side sealing insertion plates 5, the two longitudinal outer sealing insertion plates 7 and the four front supplementary right-angle insertion plates 15 are all made of stainless steel.

[0049] This part is based on Figure 7 、 Figure 8 、 Figure 9 and Figure 11 The working process of a fire door example shown is as follows:

[0050] By using the stainless steel material of the outer door 20, the two outer side sealing insertion plates 5, the two longitudinal outer sealing insertion plates 7 and the four front supplementary right-angle insertion plates 15, it is possible to avoid the first line of defense being ignited by high temperature in case of an emergency fire, affecting the protection effect.

[0051] Further optimization in combination with the above embodiments:

[0052] Furthermore, internal hexagonal grooves are provided on both the central drive shaft 1 and the two drive shafts 9.

[0053] This part is based on Figure 4 、 Figure 6 、 Figure 11 and Figure 12 The working process of a fire door example shown is as follows:

[0054] By providing internal hexagonal grooves on the central drive shaft 1 and the two drive shafts 9, it is convenient to drive using internal hexagonal tools, preventing it from affecting the daily operation and use of the door body, and at the same time, the driving is convenient.

[0055] Further optimization in combination with the above embodiments:

[0056] Furthermore, the outer side sealing insertion plates 5, the longitudinal outer sealing insertion plates 7 and the four front supplementary right-angle insertion plates 15 form an outer closed frame, the inner side sealing insertion plates 6, the longitudinal inner sealing insertion plates 8 and the rear supplementary right-angle insertion plates 16 form an inner closed frame, and a plurality of spiral sealing grooves are provided between the outer closed frame and the sealing slot 23, and an interference-fit sealing ring is provided between the inner closed frame and the sealing slot 23.

[0057] This section is based on Figure 1 , Figure 2 , Figure 3 and Figure 4 The working process of an example of a fire door is as follows:

[0058] An outer closed frame is formed by the outer sealing plug board 5, the longitudinal outer sealing plug board 7 and four front supplementary right-angle plug boards 15. The combination is closed to achieve the first line of defense and reduce the inflow of smoke. The stainless steel material is heat-resistant and non-flammable. At the same time, through multiple spiral sealing grooves, the flow of gas, high temperature and smoke is restricted to prevent direct inflow into the room through the gaps of the door. An inner closed frame is formed by the inner sealing plug board 6, the longitudinal inner sealing plug board 8 and the rear supplementary right-angle plug board 16 to achieve the second level of closure. By inserting the sealing ring into the sealing slot 23, a full range of closure is achieved to prevent smoke from flowing in and threatening the lives of people in the room.

Claims

1. A fire door comprising a central drive shaft (1), two side limit slides (2), two longitudinal limit slides (3), two seam fillers (4) and a three-layer door body (17), characterized in that: The upper and lower ends of the central drive shaft (1) respectively drive two side limit sliders (2) through meshing transmission. The left and right ends of the central drive shaft (1) respectively drive two longitudinal limit sliders (3) through meshing transmission. The central drive shaft (1) and two seam fillers (4) are all rotatably arranged within the three-layer door body (17). An outer sealing plug board (5) and an inner sealing plug board (6) for closing the side ends are fixed on the side limit slider (2). A longitudinal outer sealing plug board (7) and a longitudinal inner sealing plug board (8) for closing the longitudinal ends are fixed on the longitudinal limit slider (3). It is characterized in that the seam filler (4) includes a drive shaft (9), an eccentric drive disk (10), a hinged drive rod (11), a central hinged limit slider (12), two side drive hinged rods (13), two inclined sliding right-angle seats (14), two front supplementary right-angle plug boards (15) and two rear supplementary right-angle plug boards (16). The drive shaft (9) rotates within the inner door (18) and the outer door (20). The eccentric drive disk (10) is fixed on the drive shaft (9). The eccentric part of the eccentric drive disk (10) is hinged to the central hinged limit slider (12) through the hinged drive rod (11). The central hinged limit slider (12) longitudinally slides within the limit chute of the inner door (18) and the outer door (20) through a limit slider. The central hinged limit slider (12) is respectively hinged to two inclined sliding right-angle seats (14) through two side drive hinged rods (13). Both of the two inclined sliding right-angle seats (14) slide within the inclined limit chute of the inner door (18) and the outer door (20) through limit sliders. A front supplementary right-angle plug board (15) and a rear supplementary right-angle plug board (16) for supplementary right-angle are fixed on the inclined sliding right-angle seat (14).

2. A fire door according to claim 1, wherein: The three-layer door body (17) includes an inner door (18), a middle frame (19), an outer door (20) and a plurality of support connection seats (21). A plurality of support connection seats (21) are evenly fixed on the inner wall of the middle frame (19). The front and rear ends of the support connection seat (21) respectively fix the outer door (20) and the inner door (18). There are insertion gaps between the middle frame (19), the inner door (18) and the outer door (20). A plurality of limit chutes are arranged within both the inner door (18) and the outer door (20).

3. A fire door according to claim 2, wherein, The side end of the middle frame (19) is hinged within the door frame (22) of the fixed door body installed in the wall through a hinge. Inner sealing slots (23) are evenly arranged within the door frame (22).

4. A fire door according to claim 1, wherein, Both the outer sealing plug board (5) and the inner sealing plug board (6) slide within the support connection seat (21). The outer sealing plug board (5), the inner sealing plug board (6), the longitudinal outer sealing plug board (7) and the longitudinal inner sealing plug board (8) all slide and are inserted within the insertion gaps between the middle frame (19), the inner door (18) and the outer door (20).

5. A fire door according to claim 1, wherein, Both of the two central hinged limit sliders (12), four inclined sliding right-angle seats (14), two side limit sliders (2) and two longitudinal limit sliders (3) slide between the inner door (18) and the outer door (20) through limit sliders.

6. A fire door according to claim 1, wherein, The outer door (20), the two outer sealing inserts (5), the two longitudinal outer sealing inserts (7) and the four front filling right-angle inserts (15) are all made of stainless steel.

7. A fire door according to claim 1, wherein, The central drive shaft (1) and the two drive shafts (9) are both provided with hexagonal inner grooves.

8. A fire door according to claim 2, wherein, The outer sealing insert plate (5), the longitudinal outer sealing insert plate (7) and the four front right-angle insert plates (15) form an outer closed frame, the inner sealing insert plate (6), the longitudinal inner sealing insert plate (8) and the rear right-angle insert plate (16) form an inner closed frame, a plurality of spiral sealing grooves are provided between the outer closed frame and the sealing slot (23), and a sealing ring with interference fit is provided between the inner closed frame and the sealing slot (23).

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