Fireproof closed door

Abstract

A fireproof airtight door, which relates to the technical field of airtight doors. It comprises: a door frame; a door leaf matched with the door frame; a clamping mechanism installed on the inner side of the door leaf, which moves toward or away from the door frame to press or release the door leaf on the door frame; a switch handwheel installed on the outer side of the door leaf, one end of which is connected to the clamping mechanism and is used to control the clamping mechanism to lock or unlock the door leaf; a lock installed on the door leaf close to the clamping mechanism and used to lock the clamping mechanism when the door leaf is in a locked state; and a quick opening mechanism installed on the inner side of the door leaf close to the clamping mechanism and the lock and used to drive the clamping mechanism to move in the unlocking direction after unlocking the clamping mechanism. The above technical solution has the advantages of easy indoor door opening operation and simple mechanism, and achieves the effect of rapid indoor door opening, which can well meet the requirements of fire escape.

Description

Technical Field

[0001] The invention relates to the technical field of closed doors, and in particular to a fireproof closed door. Background Art

[0002] Fireproof closed door is a door that can increase airtightness and has fireproof effect. It is often used as fire escape in places with fire hazards such as garbage incineration plants, electronic chemical factories, warehouses, and closed rooms.

[0003] Existing fireproof closed doors generally include a clamping mechanism installed on the inner side of the door leaf; a turntable with one end installed on the outer side of the door leaf and the other end passing through the door leaf and arranged on the inner side of the door leaf, and connected to the clamping mechanism; and a lock for locking or unlocking the turntable. When the door needs to be opened, the turntable is first unlocked by the lock, and then the turntable is rotated to unlock the clamping mechanism. However, the operation of opening the door indoors is more complicated. When an emergency occurs indoors, the opportunity for self-rescue may be missed. Therefore, there is room for improvement. Summary of the invention

[0004] The purpose of the present invention is to provide a fireproof and airtight door in view of the defects and shortcomings of the prior art, which has the advantages of easy indoor door opening operation and simple structure, realizes the effect of rapid indoor door opening, and can well meet the requirements of fire escape.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a fireproof and sealed door, characterized in that it includes: a door frame; a door leaf matched with the door frame; a clamping mechanism installed on the inner side of the door leaf and moving toward or away from the door frame to press or release the door leaf on the door frame; a switch handwheel installed on the outer side of the door leaf, one end of which is connected to the clamping mechanism and is used to control the clamping mechanism to lock or unlock the door leaf; a lock installed on the door leaf close to the clamping mechanism and used to lock the clamping mechanism when the door leaf is in a locked state; and a quick opening mechanism installed on the inner side of the door leaf close to the clamping mechanism and the lock and used to drive the clamping mechanism to move in the unlocking direction after unlocking the clamping mechanism.

[0006] A limiting structure is provided on the clamping mechanism corresponding to the lock, and the quick-opening mechanism comprises: a slider slidably mounted on the limiting structure, for cooperating with or disengaging from the lock to lock or unlock the clamping mechanism; a first elastic member mounted on the slider and the limiting structure, for resetting the slider under the action of its own restoring force; and a driving component movably mounted on the door leaf corresponding to the clamping mechanism and transmission-connected to the slider; after the driving component drives the slider to disengage from the lock, the driving component drives the clamping mechanism to move in the unlocking direction to unlock the door leaf.

[0007] A connecting rod stopper is provided on the clamping mechanism, and the driving assembly comprises: a pull rope connected to the sliding block at one end; a support seat fixedly installed on the inner side of the door leaf and close to the connecting rod stopper; a pressure rod with one end rotatably assembled on the support seat, one end corresponding to the connecting rod stopper and connected to the free end of the pull rope; the pressure rod rotates relative to the support seat, and pulls the pull rope to drive the sliding block to slide relative to the limiting structure, and after disengaging with the lock, presses on the connecting rod stopper to drive the clamping mechanism to move in the unlocking direction of the door leaf.

[0008] The support seat includes: a fixing portion fixedly mounted on the door leaf; a fixing shaft fixedly mounted on one end of the fixing portion, parallel to the connecting rod stopper and used for mounting the pressure rod; and a pressure rod limiting portion arranged on the fixing shaft.

[0009] The driving assembly further comprises: a second elastic member having one end connected to the pressure rod and the other end connected to the inner side of the door leaf, and used for resetting the pressure rod under the action of its own restoring force.

[0010] A slide groove is arranged on the slide block along the unlocking direction, and a guide pin is installed on the clamping mechanism through the slide groove.

[0011] The fireproof airtight door further comprises: a guide rod which is movably inserted into the limiting structure and the first elastic member in sequence along the sliding direction of the slider and is fixed to one end of the slider.

[0012] The clamping mechanism comprises: a rotating disk arranged on the inner side of the door leaf, connected to the switch hand wheel and rotating synchronously; a plurality of pressing blocks arranged on the inner side of the door leaf and located on the periphery thereof;

[0013] A first connecting rod with one end rotatably mounted on the pressure block and the other end rotatably mounted on the turntable; and a support column for mounting the pressure block, which is mounted on the inner side of the door leaf corresponding to the pressure block; a second connecting rod rotatably mounted on multiple pressure blocks on the same side; and a clamping inclined groove is provided on the circumference of the door frame for the pressure block to be embedded in so that the door leaf is pressed against the door frame.

[0014] A self-lubricating copper sleeve is installed on one end of the pressing block that is engaged with the door frame.

[0015] The door frame is embedded with sealing strips around the periphery, the door leaf is embedded with fireproof strips around the periphery, and the door leaf is filled with fireproof materials.

[0016] After adopting the above technical solution, the beneficial effects of the present invention are:

[0017] 1. The quick-opening mechanism provided in the door leaf achieves the effect of quick opening in one step. When an emergency occurs indoors and the door needs to be opened quickly, it is only necessary to press the pressure rod downward, and the pressure rod rotates relative to the fixed shaft, and pull the pull rope to drive the slider to slide relative to the limit structure until it is released from the lock. The pressure rod contacts the connecting rod block, and drives the second connecting rod to move downward during the downward pressing process, so that the pressure block swings relative to the support shaft and gradually disengages from the clamping chute, thereby unlocking the door leaf. Finally, the door leaf can be pushed to open the door, achieving the effect of quick indoor door opening, which can well meet the requirements of fire escape. It has the advantages of easy indoor door opening operation, simple mechanism and high safety.

[0018] 2. The sealing strips installed around the door frame, the fireproof strips installed inside the door leaf, and the fireproof materials filled inside the door leaf enhance the airtightness of the room and the fireproofness of the door leaf.

[0019] 3. The clamping mechanism is formed by the pressing block, the first connecting rod, the second connecting rod and the rotating disk, which simplifies the structure while ensuring the clamping force, reduces the production cost and facilitates production, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 is a first structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the present invention after removing the door leaf, hand wheel and heavy hinge;

[0023] Figure 3 It corresponds to Figure 2 A magnified view of detail A;

[0024] Figure 4 It corresponds to Figure 2 A magnified view of detail B;

[0025] Figure 5 is a longitudinal sectional view of the present invention;

[0026] Figure 6 It corresponds to Figure 5 A magnified view of detail C;

[0027] Figure 7 is a transverse cross-sectional view of the present invention;

[0028] Figure 8 It corresponds to Figure 7 Enlarged view of detail D.

[0029] Description of reference numerals: 1. door frame; 11. sealing strip; 2. door leaf; 21. outer panel; 22. inner panel; 23. fireproof material; 24. fireproof strip; 25. heavy-duty hinge; 3. clamping mechanism; 31. turntable; 32. pressure block; 321. self-lubricating copper sleeve; 33. first connecting rod; 34. support column; 341. guide sleeve; 35. second connecting rod; 351. connecting rod stopper; 4. switch hand wheel; 41. shaft sleeve; 42. high temperature resistant sealing ring; 43 , shaft; 5, quick-open mechanism; 51, slider; 511, guide pin; 512, slide groove; 52, first elastic member; 53, drive assembly; 531, pull rope; 532, support seat; 5321, fixed part; 5322, fixed shaft; 5323, pressure rod limiting part; 533, pressure rod; 5331, installation sleeve; 5332, support rod; 5333, hand-held rod; 534, second elastic member; 57, guide rod; 58, limiting structure; 6, lock. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

[0032] This embodiment relates to a fireproof closed door, such as Figure 1 , 2 As shown in , 6 and 7, it includes: a door frame 1, a door leaf 2, a clamping mechanism 3, a switch hand wheel 4, a lock 6 and a quick opening mechanism 5.

[0033] Among them, the door leaf 2 is matched with the door frame 1. The clamping mechanism 3 is installed on the inner side of the door leaf 2. The clamping mechanism 3 is used to move toward or away from the door frame 1 to clamp or release the door leaf 2 on the door frame 1. The switch handwheel 4 is installed on the outer side of the door leaf 2, and one end passes through the door leaf 2 and is connected to the clamping mechanism 3. The switch handwheel 4 is used to control the clamping mechanism 3 to lock or unlock the door leaf 2. A shaft sleeve 41 is installed between the handwheel and the door leaf 2, and a high-temperature resistant sealing ring 42 is installed between the shaft sleeve 41 and the shaft 43 of the handwheel. The lock 6 is installed on the door leaf 2 close to the clamping mechanism 3, and the lock 6 is used to lock the clamping mechanism 3 when the door leaf 2 is in a locked state. The quick opening mechanism 5 is installed on the inner side of the door close to the clamping mechanism 3 and the lock 6, and the quick opening mechanism 5 is used to drive the clamping mechanism 3 to move in the unlocking direction after unlocking the clamping mechanism 3 on the inner side of the door leaf 2 to unlock the door leaf 2.

[0034] The lock 6 is a mechanical key lock. The user can unlock the door leaf 2 with a key, thereby unlocking the clamping mechanism 3, and then turn the switch hand wheel 4 to unlock the clamping mechanism 3 on the door frame 1, and then open the door leaf 2 to enter the room. When the user encounters an emergency indoors, the quick opening mechanism 5 can unlock the clamping mechanism 3 on the lock 6 and the door frame 1 in one step to achieve the effect of quickly opening the door.

[0035] Furthermore, if Figure 6 As shown, the door leaf 2 includes: an outer panel 21, an inner panel 22, a fireproof material 23 and a fireproof rubber strip 24.

[0036] The outer panel 21 is welded to the inner panel 22, and a receiving cavity is formed therebetween, and the receiving cavity is filled with a fireproof material 23. The fireproof rubber strip 24 is embedded on the side of the inner panel 22 that contacts the door frame 1, and is used to press the door frame 1 against each other when the door leaf 2 is closed to enhance the airtightness of the room and enhance the fireproof performance. In order to realize the rotation assembly of the door leaf 2 and the door frame 1, two heavy-duty hinges 25 are installed on one side of the door frame 1. In addition to being able to bear the weight of the door leaf 2, the heavy-duty hinges 25 can also make the door leaf 2 rotate freely to achieve flexible opening and closing. Preferably, the pin shaft of the heavy-duty hinge 25 is made of 20mm diameter 304 stainless steel to ensure good corrosion resistance and strength. The outer panel 21 is rolled and formed with a Q235 (carbon structural steel) steel plate with a thickness of 4mm, and its four corners are transitioned with arcs. The inner panel 22 is made of a galvanized steel plate with a thickness of 1.5mm.

[0037] Furthermore, the door frame 1 is surrounded by sealing strips 11, and its four corners are arc-shaped. Preferably, the sealing strips 11 are silicone foaming sealing strips 11. The door frame 1 is formed by rolling No. 10 channel steel or steel plate.

[0038] like Figure 2 , 3 As shown, the pressing mechanism 3 includes: a rotating disk 31 , a pressing block 32 , a first connecting rod 33 , a supporting column 34 and a second connecting rod 35 .

[0039] The turntable 31 is arranged on the inner side of the door leaf 2, and one end of the switch hand wheel 4 passes through the door leaf 2 and is connected to the turntable 31 by transmission, and rotates synchronously with the turntable 31. A plurality of pressing blocks 32 are arranged, which are respectively arranged on the inner side of the door leaf 2 and located on its peripheral side. Preferably, four pressing blocks 32 are arranged, which are symmetrically arranged on the four sides of the door leaf 2 to press the door leaf 2 from four directions. The self-lubricating copper sleeve 321 at one end of the pressing block 32 that is engaged with the door frame 1 has the effect of small friction and reliable pressing. One end of the first connecting rod 33 is assembled on the pressing block 32 by rotation, and the other end is assembled on the turntable 31 by rotation. The connection between the first connecting rod 33 and the pressing block 32 and the turntable 31 is through a connecting pin. The support column 34 is assembled on the inner side of the door leaf 2 corresponding to the pressing block 32, and the pressing block 32 is assembled on the support column 34 by rotation. Preferably, the support column 34 is made of solid round steel with a diameter of 40 mm to ensure the supporting strength of the pressing block 32 during the pressing process. The two ends of the second connecting rod 35 are respectively rotatably assembled with two pressing blocks 32, and are used to connect the pressing blocks 32 on the same side. A pressing inclined groove for the pressing block 32 to be inserted and pressed against the door leaf 2 to the door frame 1 is provided on the circumference of the door frame 1. When the door leaf 2 is pressed, the pressing block 32 will be pressed into the pressing inclined groove. Since the pressing inclined groove is inclined toward the side of the door frame 1, the pressing block 32 will be pressed tighter and tighter during the pressing.

[0040] When the switch hand wheel 4 is turned, the rotary disk 31 rotates, driving the first connecting rod 33 and the second connecting rod 35 to rotate, so that each pressing block 32 rotates around the supporting column 34 where it is located so that it slides out along the pressing inclined groove and disengages from the door frame 1, thereby unlocking the door leaf 2, and finally the door leaf 2 can be rotated relative to the door frame 1 to open by pulling the hand wheel. The same is true for closing the door leaf 2.

[0041] Furthermore, the quick-opening mechanism 5 includes a slider 51 , a first elastic member 52 , a driving assembly 53 and a guide rod 57 .

[0042] A limiting structure 58 is fixedly installed on the second connecting rod 35 corresponding to the lock 6. The limiting structure 58 is a U-shaped frame with an opening facing the lock 6. The slider 51 is slidably installed on the limiting structure 58, and can slide equivalent to the slider 51 to cooperate or disengage with the lock 6, thereby locking or unlocking the clamping mechanism 3. The first elastic member 52 is installed between the slider 51 and the limiting structure 58, and is used to reset the slider 51 under the action of its own restoring force. The driving assembly 53 is movably installed on the door leaf 2 corresponding to the second connecting rod 35, and is connected to the slider 51 in a transmission manner. After driving the slider 51 to disengage from the lock 6, the driving assembly 53 drives the clamping mechanism 3 to move in the unlocking direction to unlock the door leaf 2. The guide rod 57 is movably inserted into the limiting structure 58 and the first elastic member 52 in sequence along the sliding direction of the slider 51, and then fixed to one end of the slider 51. Preferably, the first elastic member 52 is a spring.

[0043] Furthermore, in order to make the sliding direction of the slider 51 more stable, a sliding groove 512 is provided on the guide slider 51 along the unlocking direction, and a guide pin 511 is installed on the second connecting rod 35 corresponding to the sliding groove 512. One end of the guide pin 511 passes through the sliding groove 512 and slides relative to the sliding groove 512 after the slider 51 slides to guide and limit the sliding of the slider 51.

[0044] Furthermore, if Figure 2-5 As shown, the driving assembly 53 includes: a pull rope 531 , a support seat 532 , a pressure rod 533 and a second elastic member 534 .

[0045] One end of the pull rope 531 is connected to the side of the slider 51 away from the lock 6, and the other end is connected to the pressure rod 533. A connecting rod stopper 351 is provided on the second connecting rod 35. The support seat 532 is fixedly installed on the inner side of the door leaf 2 and is arranged close to the connecting rod stopper 351. One end of the pressure rod 533 is rotatably assembled on the support seat 532, and the other end is arranged corresponding to the connecting rod stopper 351. One end of the second elastic member 534 is connected to the pressure rod 533 and the other end is connected to the inner side of the door leaf 2. The second elastic member 534 is used to reset the pressure rod 533 under the action of its own restoring force. Preferably, the second elastic member 534 is a spring.

[0046] The support column 34 is also equipped with a guide sleeve 341, and the pressure block 32 is assembled on the guide sleeve 341 to move freely during the swinging process. Preferably, the pressure block 32 is connected to the first connecting rod 33 and the slider 51 by a 304 stainless steel cylindrical pin with a diameter of 10 mm, which has good corrosion resistance and sufficient connection strength.

[0047] The pressure rod 533 rotates relative to the support seat 532 and pulls the pull rope 531 to drive the slider 51 to slide relative to the limiting structure 58. After disengaging from the lock 6, it presses on the connecting rod stopper 351 to drive the clamping mechanism 3 to move in the unlocking direction of the door leaf 2.

[0048] The support seat 532 includes a fixing portion 5321 , a fixing shaft 5322 and a pressure rod limiting portion 5323 .

[0049] The fixing portion 5321 is fixedly assembled on the door leaf 2 by screws. The fixing shaft 5322 is fixedly assembled on one end of the fixing portion 5321, the fixing shaft 5322 is parallel to the connecting rod stopper 351, and is used for installing the pressure rod 533. The pressure rod limiting portion 5323 is arranged on the fixing shaft 5322, and is used to limit the installation position of the pressure rod 533. Preferably, the pressure rod limiting portion 5323 and the fixing shaft 5322 are integrally formed.

[0050] The pressure rod 533 includes: a mounting sleeve 5331, a support rod 5332 and a hand-held rod 5333. The mounting sleeve 5331 is rotatably mounted in the fixed shaft 5322, and the support rod 5332 is arranged between the mounting sleeve 5331 and the hand-held rod 5333 to connect the two. The connecting rod stopper 351 extends along a side perpendicular to the first connecting rod 33 and is in a rod shape. The support rod 5332 extends along a side perpendicular to the connecting rod stopper 351 to a position higher than the connecting rod stopper 351, and then bends away from the door leaf 2 so as to contact the connecting rod stopper 351 when the pressure rod 533 is pressed down, thereby driving the second connecting rod 35 to be pressed down.

[0051] The working principle of the present invention is roughly as follows: when an emergency occurs indoors and the door needs to be opened quickly, it is only necessary to press the pressure rod 533 downward, the pressure rod 533 rotates relative to the fixed shaft 5322, and pull the pull rope 531 to drive the slider 51 to slide relative to the limiting structure 58 until it is disengaged from the lock 6. The pressure rod 533 contacts the connecting rod block 351, and drives the second connecting rod 35 to move downward during the downward pressure process, so that the pressure block 32 swings relative to the support shaft and gradually disengages from the clamping inclined groove, thereby unlocking the door leaf 2, and finally pushing the door leaf 2 to open the door, achieving the effect of quick opening in one step.

[0052] The above is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A fireproof closed door, characterized in that: include: Door frame (1); A door leaf (2) matched with the door frame (1); A pressing mechanism (3) installed on the inner side of the door leaf (2) and moving toward or away from the door frame (1) to press or release the door leaf (2) against the door frame (1); A switch hand wheel (4) installed on the outside of the door leaf (2), one end of which is connected to the clamping mechanism (3) and is used to control the clamping mechanism (3) to lock or unlock the door leaf (2); a lock (6) installed on the door leaf (2) close to the clamping mechanism (3) and used to lock the clamping mechanism (3) when the door leaf (2) is in a locked state; and A quick opening mechanism (5) installed on the inner side of the door leaf (2) near the clamping mechanism (3) and the lock (6), and used for driving the clamping mechanism (3) to move in an unlocking direction after the clamping mechanism (3) is unlocked; The clamping mechanism (3) is provided with a limiting structure (58) corresponding to the lock (6), and the quick opening mechanism (5) comprises: a slider (51) slidably mounted on the limiting structure (58) and used to cooperate with or disengage the lock (6) to lock or unlock the clamping mechanism (3); a first elastic member (52) mounted on the slider (51) and the limiting structure (58) and used for resetting the slider (51) under the action of its own restoring force; and a driving assembly (53) movably mounted on the door leaf (2) corresponding to the pressing mechanism (3) and drivingly connected to the sliding block (51); After the driving component (53) drives the slider (51) to disengage from the lock (6), it drives the pressing mechanism (3) to move in the unlocking direction to unlock the door leaf (2); The clamping mechanism (3) is provided with a connecting rod stopper (351), and the driving assembly (53) comprises: a pull rope (531) with one end connected to the slider (51); A support seat (532) fixedly mounted on the inner side of the door leaf (2) and close to the connecting rod stopper (351); A pressure rod (533) having one end rotatably mounted on the support seat (532), one end of which is arranged corresponding to the connecting rod stopper (351) and is connected to the free end of the pull rope (531); The pressure rod (533) rotates relative to the support seat (532), and pulls the pull rope (531) to drive the slider (51) to slide relative to the limiting structure (58), and after disengaging from the lock (6), presses on the connecting rod stopper (351) to drive the clamping mechanism (3) to move in the unlocking direction of the door leaf (2).

2. The fireproof closed door according to claim 1, characterized in that: The support base (532) comprises: A fixing portion (5321) fixedly mounted on the door leaf (2); a fixed shaft (5322) fixedly assembled at one end of the fixed portion (5321), parallel to the connecting rod stopper (351), and used for mounting the pressure rod (533); and, A pressure rod limiting portion (5323) is arranged on the fixed shaft (5322).

3. The fireproof closed door according to claim 1 or 2, characterized in that: The driving assembly (53) further comprises: a second elastic member (534) having one end connected to the pressure rod (533) and the other end connected to the inner side of the door leaf (2), and used for resetting the pressure rod (533) under the action of its own restoring force.

4. The fireproof closed door according to claim 1, characterized in that: A sliding groove (512) is provided on the sliding block (51) along the unlocking direction, and a guide pin (511) is installed on the clamping mechanism (3) through the sliding groove (512).

5. The fireproof closed door according to claim 4, characterized in that: The fireproof sealed door further comprises: a guide rod (57) which is movably inserted into the limiting structure (58) and the first elastic member (52) in sequence along the sliding direction of the slider (51) and is fixed to one end of the slider (51).

6. The fireproof closed door according to claim 1, characterized in that: The pressing mechanism (3) comprises: A rotating disk (31) disposed on the inner side of the door leaf (2), drivingly connected to the switch hand wheel (4), and rotating synchronously; A plurality of pressing blocks (32) arranged on the inner side of the door leaf (2) and located on the peripheral side thereof; a first connecting rod (33) having one end rotatably mounted on the pressing block (32) and the other end rotatably mounted on the rotating disk (31); and A support column (34) corresponding to the pressing block (32) and mounted on the inner side of the door leaf (2) for mounting the pressing block (32); A second connecting rod (35) rotatably assembled on a plurality of the pressing blocks (32) on the same side; The door frame (1) is provided with a pressing inclined groove on the circumference thereof for the pressing block (32) to be inserted into so as to press the door leaf (2) against the door frame (1).

7. The fireproof closed door according to claim 6, characterized in that: A self-lubricating copper sleeve (321) is installed on one end of the pressing block (32) that is engaged with the door frame (1).

8. The fireproof closed door according to claim 7, characterized in that: The door frame (1) is embedded with sealing strips (11) around the periphery, the door leaf (2) is embedded with fireproof strips (24) around the periphery, and the door leaf (2) is filled with fireproof material (23).

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