Fireproof door with constant pressure maintaining function

Abstract

The invention discloses a fireproof door with a constant pressure maintaining function, and relates to the technical field of fireproof doors, the fireproof door comprises a door frame, a door body is rotatably connected to the door frame, the fireproof door further comprises a temperature monitoring mechanism, a personnel sensing mechanism and a cooling and anti-scalding mechanism, and the temperature monitoring mechanism and the cooling and anti-scalding mechanism are both arranged at the upper end of the door frame; the personnel sensing mechanism is arranged at the lower end of the door frame, and through the arrangement of the personnel sensing mechanism, when a person approaches and steps on the I-shaped pedal, a prompt signal can be sent to an external terminal by compressing a reset spring and triggering contact between a first contact and a second contact; by means of the design, rescue workers can know the dynamic state near the fireproof door in time, response and preparation can be made in time conveniently, potential risks caused by information asymmetry are reduced, safety in the escape process is enhanced, rescue response time is shortened, and rescue efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fire doors, and in particular to a fire door with a constant pressure maintaining function. Background Art

[0002] Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. They are mainly used to prevent the spread of fire and smoke and ensure the evacuation of personnel. In the existing technology, the edges of fire doors will use high-temperature resistant and elastic sealing materials to ensure that they can still maintain good sealing when the air pressure changes, thereby achieving constant pressure;

[0003] In emergency escape situations, the flow and status of people near fire doors are crucial to the decision-making of rescue operations. However, traditional fire door systems lack direct personnel perception capabilities, which makes it impossible for rescuers to immediately understand the dynamic changes near the fire doors, such as the number of people, evacuation speed, etc. This information asymmetry seriously hinders the rapid response of rescue operations, requiring rescuers to spend a lot of time on-site searching and confirming people, which not only wastes precious rescue time, but also misses the best rescue opportunity, resulting in low rescue efficiency. If rescuers cannot understand the situation near the fire doors in a timely manner, it will be difficult to take effective countermeasures, thereby increasing potential risks and uncertainties.

[0004] In view of this, the present invention proposes a fire door with a constant pressure maintaining function to compensate for and improve the deficiencies of the prior art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a fire door with a constant pressure maintaining function to solve the corresponding technical problems raised in the above background technology.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a fire door with a constant pressure maintaining function, comprising a door frame, a door body being rotatably connected to the door frame, and also comprising: a temperature monitoring mechanism, a personnel sensing mechanism and a temperature reduction and scalding prevention mechanism, wherein the temperature monitoring mechanism and the temperature reduction and scalding prevention mechanism are both arranged at the upper end of the door frame, and the personnel sensing mechanism is arranged at the lower end of the door frame;

[0007] The temperature monitoring mechanism is used to monitor the ambient temperature outside the door body, and synchronously trigger the personnel sensing mechanism and the cooling and scalding prevention mechanism to start when the temperature is abnormal;

[0008] The personnel sensing mechanism is used to sense the escaped personnel passing through the door body and opening the door body when the ambient temperature outside the door body is abnormal;

[0009] The cooling and scalding prevention mechanism is used to spray water obliquely from the upper end of the door body to the surface of the door body when the ambient temperature outside the door body is abnormal.

[0010] Preferably, the temperature monitoring mechanism includes a fixing frame fixedly connected to the left end of the front side of the door frame, a pressing plate is slidably connected between the inner walls on both sides of the fixing frame, a switch is provided on the inner top wall of the fixing frame, the pressing plate is provided below the switch, a first telescopic rod and a memory alloy wire are respectively fixedly connected between the pressing plate and the inner bottom wall of the fixing frame, and the memory alloy wire is spring-shaped and is sleeved on the outer surface of the first telescopic rod.

[0011] Preferably, the personnel sensing mechanism includes a mounting frame fixedly connected to the lower end of the front side of the door frame, a mounting plate is symmetrically fixedly connected between the front and rear inner walls of the mounting frame, a bidirectional reciprocating screw rod is symmetrically rotatably connected between the mounting plates, a transmission member is transmission-connected between the bidirectional reciprocating screw rods, a first drive motor is fixedly connected to one of the mounting plates, and the output end of the first drive motor is fixedly connected to one of the bidirectional reciprocating screw rods.

[0012] Preferably, a rectangular groove is opened at the center of the top of the mounting frame, and the rectangular groove is connected to the inside of the mounting frame, F-shaped clamping plates are symmetrically threadedly connected between the bidirectional reciprocating screws, and an I-shaped pedal board is clamped between the F-shaped clamping plates, and the upper end of the I-shaped pedal board is arranged in the rectangular groove, and the upper surface of the I-shaped pedal board is flush with the upper surface of the mounting frame.

[0013] Preferably, a second telescopic rod and a return spring are symmetrically fixedly connected between the I-shaped pedal board and the inner bottom wall of the mounting frame, and the return spring is sleeved on the outer surface of the second telescopic rod. A mounting block is fixedly connected at the center of the inner bottom wall of the mounting frame, a second contact is arranged on the top of the mounting block, and a first contact is arranged on the bottom of the I-shaped pedal board, the first contact is arranged directly above the second contact, and the first contact does not initially contact with the second contact.

[0014] Preferably, a support block is symmetrically fixedly connected to the inner bottom wall of the mounting frame, and the top of the support block is in contact with the F-shaped clamping plate.

[0015] Preferably, the cooling and scalding prevention mechanism includes a protective frame fixedly connected to the upper end of the front side of the door frame, a water storage cylinder is arranged inside the protective frame, and the water storage cylinder is fixedly connected to the door frame, V-shaped water pipes are fixedly connected to the water storage cylinder at equal intervals, and the V-shaped water pipe is fixedly connected to the protective frame, and the end of the V-shaped water pipe away from the water storage cylinder is fixedly connected to a nozzle, and the nozzle is inclined toward the door body.

[0016] Preferably, a rotating shaft is rotatably connected between the inner walls on both sides of the water storage cylinder, a second drive motor is fixedly connected to the right side of the water storage cylinder, and the output end of the second drive motor is fixedly connected to the rotating shaft, a T-shaped sealing plate is fixedly connected to the outer surface of the rotating shaft, and the T-shaped sealing plate initially blocks the connection between the V-shaped water pipe and the water storage cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) Through the setting of the personnel sensing mechanism, when a person approaches and steps on the I-shaped stepping pedal, a prompt signal can be sent to the external terminal by compressing the return spring and triggering the contact between the first contact and the second contact. This design enables rescue personnel to timely understand the dynamics near the fire door, facilitating timely response and preparation, reducing potential risks caused by information asymmetry, enhancing the safety of the escape process, thereby shortening the rescue response time and improving the rescue efficiency;

[0019] Among them, the setting of the support block not only provides a support basis when the F-shaped clamping plate is clamped to the I-shaped pedal, but also prevents false alarms in non-emergency situations (such as daily inspections or accidental touches), improves the stability and reliability of the system, and reduces unnecessary alarms and interference.

[0020] (2) By setting up the cooling and scalding prevention mechanism, when the switch is triggered, the second drive motor starts immediately, driving the T-shaped sealing plate to rotate through the rotating shaft, thereby releasing the blockage of the V-shaped water pipe, so that the water source in the water storage cylinder can be quickly sprayed onto the surface of the door body through the V-shaped water pipe and the nozzle. This instant cooling mechanism effectively reduces the high heat accumulated in the door body in a high temperature environment, prevents skin burns caused by the high temperature of the door body when people approach, and greatly protects the safety of people;

[0021] Among them, because the nozzle is inclined and facing the door body, the sprayed water can evenly cover the surface of the door body and flow downward under the action of gravity, further expanding the cooling range and effect. This design ensures that multiple parts of the door body can be effectively cooled, thereby improving the cooling efficiency.

[0022] (3) Through the setting of the temperature monitoring mechanism, the elastic deformation of the memory alloy wire under abnormal temperature can be used to monitor the ambient temperature outside the door body, and when the temperature is abnormal, the personnel sensing mechanism and the cooling and anti-scalding mechanism are triggered to start synchronously, so as to realize the automatic operation of the system, reduce the need for human intervention, and improve the reliability and stability of the system;

[0023] Among them, memory alloy wire is used as a temperature sensing element. Compared with the existing technology, memory alloy wire is more sensitive to temperature changes. Once the ambient temperature exceeds the set threshold (such as when a fire occurs), it can quickly change from a contracted state to an extended state, thereby quickly triggering the subsequent emergency mechanism. This instant response capability is crucial for emergencies such as fires, thereby helping to reduce potential losses and injuries. When the memory alloy wire triggers the switch, it can automatically start the personnel sensing mechanism and the cooling and anti-scalding mechanism, realizing the simultaneous start of multiple emergency measures, effectively improving the efficiency and effectiveness of emergency handling, and reducing the need and errors of human intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the connection of the fixing frame shown in the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the connection of the mounting frame shown in the present invention;

[0027] Figure 4 The present invention shows Figure 3 The enlarged structural diagram at A in the middle;

[0028] Figure 5 It is a schematic diagram of the disassembled structure of the I-shaped stepping pedal and the F-shaped pallet shown in the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the connection of the protection frame shown in the present invention;

[0030] Figure 7 The present invention shows Figure 6 Enlarged structural diagram at B in the middle.

[0031] The numbers in the figure are:

[0032] 1. Door frame; 2. Door body;

[0033] 3. Temperature monitoring mechanism; 301. Fixing frame; 302. Switch; 303. Pressing plate; 304. First telescopic rod; 305. Memory alloy wire;

[0034] 4. Personnel sensing mechanism; 401. Mounting frame; 402. Rectangular slot; 403. Mounting plate; 404. First drive motor; 405. Bidirectional reciprocating screw rod; 406. Transmission member; 407. F-shaped card plate; 408. I-shaped pedal; 409. Return spring; 410. Second telescopic rod; 411. First contact point; 412. Support block; 413. Mounting block; 414. Second contact point;

[0035] 5. Cooling and anti-scalding mechanism; 501. Protection frame; 502. Water storage cylinder; 503. V-shaped water pipe; 504. Sprinkler; 505. Second drive motor; 506. Rotating shaft; 507. T-shaped sealing plate. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiments of the present invention:

[0038] Please refer to Figures 1 to 7 As shown, a fire door with a constant pressure maintaining function comprises a door frame 1, a door body 2 is rotatably connected to the door frame 1, and further comprises: a temperature monitoring mechanism 3, a personnel sensing mechanism 4 and a cooling and scalding prevention mechanism 5, wherein the temperature monitoring mechanism 3 and the cooling and scalding prevention mechanism 5 are both arranged at the upper end of the door frame 1, and the personnel sensing mechanism 4 is arranged at the lower end of the door frame 1;

[0039] The temperature monitoring mechanism 3 is used to monitor the ambient temperature outside the door body 2, and synchronously trigger the personnel sensing mechanism 4 and the cooling and scalding prevention mechanism 5 to start when the temperature is abnormal;

[0040] The personnel sensing mechanism 4 is used to sense the escaped personnel passing through the door body 2 and opening the door body 2 when the ambient temperature outside the door body 2 is abnormal;

[0041] The cooling and scalding prevention mechanism 5 is used to spray water obliquely from the upper end of the door body 2 to the surface of the door body 2 when the ambient temperature outside the door body 2 is abnormal;

[0042] The temperature monitoring mechanism 3 includes a fixing frame 301 fixedly connected to the left end of the front side of the door frame 1, a pressing plate 303 is slidably connected between the inner walls on both sides of the fixing frame 301, a switch 302 is provided on the inner top wall of the fixing frame 301, the pressing plate 303 is provided below the switch 302, and a first telescopic rod 304 and a memory alloy wire 305 are respectively fixedly connected between the pressing plate 303 and the inner bottom wall of the fixing frame 301, and the memory alloy wire 305 is spring-shaped and sleeved on the outer surface of the first telescopic rod 304.

[0043] The effects achieved by this embodiment are as follows: compared with the prior art, through the setting of the temperature monitoring mechanism 3, the elastic deformation of the memory alloy wire 305 at abnormal temperature can be utilized to monitor the ambient temperature outside the door body 2, and when the temperature is abnormal, the personnel sensing mechanism 4 and the cooling and anti-scalding mechanism 5 are synchronously triggered to start, thereby realizing the automatic operation of the system, reducing the need for human intervention, and improving the reliability and stability of the system.

[0044] Further examples:

[0045] Please refer to Figures 1 to 7 As shown, the personnel sensing mechanism 4 includes a mounting frame 401 fixedly connected to the lower end of the front side of the door frame 1, a mounting plate 403 is symmetrically fixedly connected between the inner walls on both sides of the front and rear sides of the mounting frame 401, a two-way reciprocating screw rod 405 is symmetrically rotatably connected between the mounting plates 403, and a transmission member 406 is transmission-connected between the two-way reciprocating screw rods 405, a first drive motor 404 is fixedly connected to one of the mounting plates 403, and the output end of the first drive motor 404 is fixedly connected to one of the two-way reciprocating screw rods 405;

[0046] A rectangular groove 402 is provided at the center of the top of the mounting frame 401, and the rectangular groove 402 is connected to the inside of the mounting frame 401, and an F-shaped clamping plate 407 is symmetrically threadedly connected between the two-way reciprocating screw rods 405, and an I-shaped pedal board 408 is clamped between the F-shaped clamping plates 407, and the upper end of the I-shaped pedal board 408 is arranged in the rectangular groove 402, and the upper surface of the I-shaped pedal board 408 is flush with the upper surface of the mounting frame 401;

[0047] A second telescopic rod 410 and a return spring 409 are symmetrically fixedly connected between the I-shaped pedal board 408 and the inner bottom wall of the mounting frame 401, and the return spring 409 is sleeved on the outer surface of the second telescopic rod 410. A mounting block 413 is fixedly connected at the center of the inner bottom wall of the mounting frame 401, and a second contact 414 is arranged on the top of the mounting block 413. A first contact 411 is arranged at the bottom of the I-shaped pedal board 408, and the first contact 411 is arranged directly above the second contact 414, and the first contact 411 does not contact the second contact 414 initially.

[0048] A support block 412 is also symmetrically fixedly connected to the inner bottom wall of the mounting frame 401 , and the top of the support block 412 is in contact with the F-shaped clamping plate 407 .

[0049] The effects achieved by this embodiment are as follows: compared with the prior art, through the setting of the personnel sensing mechanism 4, when a person approaches and steps on the I-shaped pedal 408, a prompt signal can be sent to the external terminal by compressing the return spring 409 and triggering the contact between the first contact 411 and the second contact 414. This design enables rescue personnel to promptly understand the dynamics near the fire door, facilitates timely response and preparation, reduces potential risks caused by information asymmetry, enhances the safety of the escape process, thereby shortening the rescue response time and improving the rescue efficiency.

[0050] Further examples:

[0051] Please refer to Figures 1 to 7 As shown, the cooling and scalding prevention mechanism 5 includes a protection frame 501 fixedly connected to the upper end of the front side of the door frame 1, a water storage cylinder 502 is arranged inside the protection frame 501, and the water storage cylinder 502 is fixedly connected to the door frame 1, and V-shaped water pipes 503 are fixedly connected to the water storage cylinder 502 at equal intervals, and the V-shaped water pipe 503 is fixedly connected to the protection frame 501, and the end of the V-shaped water pipe 503 away from the water storage cylinder 502 is fixedly connected to a nozzle 504, and the nozzle 504 is inclined toward the door body 2;

[0052] A rotating shaft 506 is rotatably connected between the inner walls on both sides of the water storage cylinder 502, a second drive motor 505 is fixedly connected to the right side of the water storage cylinder 502, and the output end of the second drive motor 505 is fixedly connected to the rotating shaft 506, a T-shaped sealing plate 507 is fixedly connected to the outer surface of the rotating shaft 506, and the T-shaped sealing plate 507 initially blocks the connection between the V-shaped water pipe 503 and the water storage cylinder 502.

[0053] The effects achieved by this embodiment are as follows: compared with the prior art, through the setting of the cooling and scalding prevention mechanism 5, when the switch 302 is triggered, the second drive motor 505 starts immediately, and drives the T-shaped sealing plate 507 to rotate through the rotating shaft 506, thereby releasing the blockage of the V-shaped water pipe 503, so that the water source in the water storage cylinder 502 can be quickly sprayed onto the surface of the door body 2 through the V-shaped water pipe 503 and the nozzle 504. This instant cooling mechanism effectively reduces the high heat accumulated in the door body 2 in a high temperature environment, prevents skin burns caused by the high temperature of the door body 2 when people approach, and greatly protects the safety of people.

[0054] The complete usage steps and working principle of the above embodiment are as follows:

[0055] In the initial state: the memory alloy wire 305 is in a spring shape. When the ambient temperature outside the initial door body 2 is normal and no fire occurs, the spring-shaped memory alloy wire 305 is in a contracted state, the pressing plate 303 is set away from the switch 302, and the pressing plate 303 does not touch the switch 302. The switch 302 is electrically connected to the first drive motor 404 and the second drive motor 505 respectively. When not touched, the first drive motor 404 and the second drive motor 505 will not be triggered to start.

[0056] The following is the working process of the temperature monitoring mechanism 3 monitoring the ambient temperature outside the door body 2 and synchronously triggering the personnel sensing mechanism 4 and the cooling and scalding prevention mechanism 5 to start when the temperature is abnormal:

[0057] When the ambient temperature outside the door 2 is abnormal (fire occurs), Figure 2 As shown, the memory alloy wire 305 installed on the inner bottom wall of the fixing frame 301 will deform due to the change in temperature, and transform from the initial contracted state to the extended state. Since the lower end of the memory alloy wire 305 and the inner bottom wall of the fixing frame 301 are in a fixed connection relationship, and the upper end of the memory alloy wire 305 is fixedly connected to the pressing plate 303, and the pressing plate 303 is slidably set between the inner walls on both sides of the fixing frame 301, the upper end of the memory alloy wire 305 is a free end. During the deformation (extension) process, the pressing plate 303 will be pushed to slide upward between the inner walls on both sides of the fixing frame 301, and the switch 302 is set on the inner top wall of the fixing frame 301. As the shape of the memory alloy wire 305 changes, the pressing plate 303 will eventually be pushed to fit to the inner top wall of the fixing frame 301, touching the switch 302, thereby turning on the first drive motor 404 in the personnel sensing mechanism 4 and cooling The second drive motor 505 in the anti-scalding mechanism 5 can monitor the ambient temperature outside the door body 2, and synchronously trigger the personnel sensing mechanism 4 and the cooling and anti-scalding mechanism 5 to start when the temperature is abnormal. The memory alloy wire 305 is used as a temperature sensing element. Compared with the prior art, the memory alloy wire 305 is more sensitive to temperature changes. Once the ambient temperature exceeds the set threshold (such as when a fire occurs), it can quickly change from a contracted state to an extended state, thereby quickly triggering the subsequent emergency mechanism. This instant response capability is crucial for emergency situations such as fires, thereby helping to reduce potential losses and injuries. When the memory alloy wire 305 triggers the switch 302, it can automatically start the personnel sensing mechanism 4 and the cooling and anti-scalding mechanism 5, realizing the synchronous start of multiple emergency measures, effectively improving the efficiency and effectiveness of emergency handling, and reducing the need for and errors in human intervention;

[0058] Please refer to the above working process Figures 1 to 7 .

[0059] The following is the working process of the personnel sensing mechanism 4 sensing the escaped personnel passing through the door body 2 and opening the door body 2 when the ambient temperature outside the door body 2 is abnormal:

[0060] In the above text, when the switch 302 is touched and turned on by the pressing plate 303, Figure 3 As shown, the first drive motor 404 starts to run synchronously, and drives the bidirectional reciprocating screw rod 405 fixedly connected to its output end to rotate between the two mounting plates 403. Since the number of the bidirectional reciprocating screw rods 405 is set to two, and the two bidirectional reciprocating screw rods 405 are connected by a transmission member 406, when the first drive motor 404 drives one of the bidirectional reciprocating screw rods 405 to rotate, the other bidirectional reciprocating screw rod 405 can be driven to rotate synchronously between the two mounting plates 403 under the transmission action of the transmission member 406 (it should be noted that the transmission member 406 is composed of two transmission wheels and a transmission belt connected between the two transmission wheels, and the two transmission wheels are respectively fixedly connected to the outer surfaces of the two bidirectional reciprocating screw rods 405. When one of the bidirectional reciprocating screw rods 405 rotates, the transmission wheel set thereon rotates synchronously. Under the transmission action of the transmission belt, the other transmission wheel can be driven to rotate in coordination with the other bidirectional reciprocating screw rod 405 set on its axis, thereby realizing the synchronous rotation between the two bidirectional reciprocating screw rods 405). Figure 3 , Figure 4 as well as Figure 5 As shown, since the two bidirectional reciprocating screws 405 are symmetrically threadedly connected with an F-shaped clamping plate 407, and the F-shaped clamping plates 407 are initially clamped with an I-shaped pedal board 408, when the two bidirectional reciprocating screws 405 rotate, the two F-shaped clamping plates 407 will be driven to move in opposite directions therebetween, so that the F-shaped clamping plates 407 and the I-shaped pedal board 408 are released from the clamping connection relationship. Since the I-shaped pedal board 408 is arranged in the rectangular groove 402 opened at the top of the mounting frame 401, and the I-shaped pedal board 408 and the upper surface of the mounting frame 401 are relative to each other, The bottom of the I-shaped pedal board 408 is flush with each other, and a second telescopic rod 410 and a return spring 409 sleeved on the outer surface of the second telescopic rod 410 are symmetrically fixedly arranged between the bottom of the I-shaped pedal board 408 and the inner bottom wall of the mounting frame 401. At this time, the I-shaped pedal board 408 can move in the vertical direction. When a person approaches and opens the door body 2 to escape, the person's feet will step on the I-shaped pedal board 408. The person's own weight will generate a downward pressure on the I-shaped pedal board 408, so that the return spring 409 is compressed, and the second telescopic rod 410 also shrinks synchronously. Figure 5As shown, since a first contact 411 is provided at the bottom of the I-shaped pedal board 408, a mounting block 413 is fixedly provided at the center of the inner bottom wall of the mounting frame 401, and a second contact 414 is provided on the top of the mounting block 413, as people step on it, the I-shaped pedal board 408 moves downward, which will make the first contact 411 and the second contact 414 come into contact, and at this time a prompt will be sent to the external terminal, prompting that there are escaped personnel near the door body 2, and attention should be paid to the movement and rescue actions should be prepared at any time, and the inner bottom wall of the mounting frame 401 is also symmetrically fixed with support blocks 412, and initially the support blocks 412 are set on the F-shaped card plate 407. When the F-shaped card plate 407 is initially clamped to the I-shaped pedal board 408, the F-shaped card plate 407 can limit the movement of the I-shaped pedal board 408 while providing a support basis for the I-shaped pedal board 408, so as to prevent false alarms when no fire abnormality occurs;

[0061] Please refer to the above working process Figures 1 to 7 .

[0062] The following is the working process of the cooling and scalding prevention mechanism 5 spraying water obliquely from the upper end of the door body 2 to the surface of the door body 2 when the ambient temperature outside the door body 2 is abnormal:

[0063] In the above text, when the switch 302 is touched and turned on by the pressing plate 303, Figure 6 and Figure 7As shown, the second drive motor 505 starts to run synchronously, and drives the rotating shaft 506 fixedly connected to its output end to rotate 180 degrees synchronously between the inner walls of the two sides of the water storage cylinder 502. Since the water storage cylinder 502 is arranged at the upper end of the door frame 1, and the outer surface of the water storage cylinder 502 is equidistantly fixedly connected with a V-shaped water pipe 503, the V-shaped water pipe 503 is fixedly connected with a nozzle 504 at one end away from the water storage cylinder 502, and the nozzle 504 is inclined toward the door body 2, and the outer surface of the rotating shaft 506 is fixedly connected with a T-shaped sealing plate 507. Initially, the T-shaped sealing plate 507 is blocked at the connection between the V-shaped water pipe 503 and the water storage cylinder 502, so as to prevent the water source inside the water storage cylinder 502 from flowing out of the V-shaped water pipe 503 when not in use. As the second drive motor 505 drives the rotating shaft 506, The T-shaped sealing plate 507 is driven to rotate to release the blockage of the connection between the V-shaped water pipe 503 and the water storage cylinder 502. At this time, the water source in the water storage cylinder 502 will enter the V-shaped water pipe 503 and be sprayed onto the surface of the door body 2 through the nozzle 504. Since the nozzle 504 is arranged at the upper end of the door body 2 and is inclined, the sprayed water source can flow downward from the upper end of the door body 2 under the action of gravity, and the water source is evenly covered on the surface of the door body 2 to cool the surface of the door body 2, thereby reducing the situation where the skin of the personnel is scalded due to the excessively high temperature of the door body 2 when the personnel are close to it, and protecting the safety of the personnel. This instant cooling mechanism effectively reduces the high heat accumulated in the door body 2 in a high temperature environment, prevents the skin from being scalded due to the high temperature of the door body 2 when the personnel are close to it, and greatly protects the safety of the personnel;

[0064] Among them, since the nozzle 504 is inclined and faces the door body 2, the sprayed water source can evenly cover the surface of the door body 2 and flow downward under the action of gravity, further expanding the scope and effect of cooling. This design ensures that multiple parts of the door body 2 can be effectively cooled, thereby improving the efficiency of cooling;

[0065] Please refer to the above working process Figures 1 to 7 .

[0066] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fireproof door with a constant pressure maintaining function, comprising a door frame (1), a door body (2) being rotatably connected to the door frame (1), characterized in that: The door frame (1) further comprises: a temperature monitoring mechanism (3), a personnel sensing mechanism (4) and a temperature reduction and scalding prevention mechanism (5), wherein the temperature monitoring mechanism (3) and the temperature reduction and scalding prevention mechanism (5) are both arranged at the upper end of the door frame (1), and the personnel sensing mechanism (4) is arranged at the lower end of the door frame (1); The temperature monitoring mechanism (3) is used to monitor the ambient temperature outside the door body (2), and to synchronously trigger the personnel sensing mechanism (4) and the cooling and scalding prevention mechanism (5) to start when the temperature is abnormal; The personnel sensing mechanism (4) is used to sense the escaped personnel who pass through the door body (2) and open the door body (2) when the ambient temperature outside the door body (2) is abnormal; The cooling and scalding prevention mechanism (5) is used to spray water obliquely from the upper end of the door body (2) toward the surface of the door body (2) when the ambient temperature outside the door body (2) is abnormal.

2. A fire door with a constant pressure maintaining function according to claim 1, characterized in that: The temperature monitoring mechanism (3) comprises a fixing frame (301) fixedly connected to the left end of the front side of the door frame (1); a pressing plate (303) is slidably connected between the inner walls on both sides of the fixing frame (301); a switch (302) is arranged on the inner top wall of the fixing frame (301); the pressing plate (303) is arranged below the switch (302); a first telescopic rod (304) and a memory alloy wire (305) are respectively fixedly connected between the pressing plate (303) and the inner bottom wall of the fixing frame (301); and the memory alloy wire (305) is in a spring shape and is sleeved on the outer surface of the first telescopic rod (304).

3. A fire door with a constant pressure maintaining function according to claim 1, characterized in that: The personnel sensing mechanism (4) comprises a mounting frame (401) fixedly connected to the lower end of the front side of the door frame (1); a mounting plate (403) is symmetrically fixedly connected between the inner walls on the front and rear sides of the mounting frame (401); a bidirectional reciprocating screw rod (405) is symmetrically rotatably connected between the mounting plates (403); a transmission member (406) is transmission-connected between the bidirectional reciprocating screw rods (405); a first drive motor (404) is fixedly connected to one of the mounting plates (403), and an output end of the first drive motor (404) is fixedly connected to one of the bidirectional reciprocating screw rods (405).

4. A fire door with a constant pressure maintaining function according to claim 3, characterized in that: A rectangular groove (402) is provided at the center of the top of the mounting frame (401), and the rectangular groove (402) is communicated with the inside of the mounting frame (401); an F-shaped clamping plate (407) is symmetrically threadedly connected between the bidirectional reciprocating screw rods (405); an I-shaped pedal board (408) is clamped between the F-shaped clamping plates (407); the upper end of the I-shaped pedal board (408) is arranged in the rectangular groove (402), and the upper surface of the I-shaped pedal board (408) is flush with the upper surface of the mounting frame (401).

5. A fire door with a constant pressure maintaining function according to claim 4, characterized in that: A second telescopic rod (410) and a return spring (409) are symmetrically fixedly connected between the I-shaped pedal board (408) and the inner bottom wall of the mounting frame (401), and the return spring (409) is sleeved on the outer surface of the second telescopic rod (410). A mounting block (413) is fixedly connected at the center of the inner bottom wall of the mounting frame (401), and a second contact point (414) is arranged on the top of the mounting block (413). A first contact point (411) is arranged at the bottom of the I-shaped pedal board (408), and the first contact point (411) is arranged directly above the second contact point (414), and the first contact point (411) is not in contact with the second contact point (414) initially.

6. A fire door with a constant pressure maintaining function according to claim 5, characterized in that: The inner bottom wall of the mounting frame (401) is also symmetrically fixedly connected with a support block (412), and the top of the support block (412) is in contact with the F-shaped clamping plate (407).

7. The fire door with a constant pressure maintaining function according to claim 1, characterized in that: The cooling and scalding prevention mechanism (5) comprises a protection frame (501) fixedly connected to the upper end of the front side of the door frame (1); a water storage cylinder (502) is arranged inside the protection frame (501), and the water storage cylinder (502) is fixedly connected to the door frame (1); V-shaped water pipes (503) are fixedly connected to the water storage cylinder (502) at equal intervals, and the V-shaped water pipes (503) are fixedly connected to the protection frame (501); one end of the V-shaped water pipe (503) away from the water storage cylinder (502) is fixedly connected to a nozzle (504), and the nozzle (504) is inclined toward the door body (2).

8. The fire door with constant pressure maintaining function according to claim 7, characterized in that: A rotating shaft (506) is rotatably connected between the inner walls of both sides of the water storage cylinder (502); a second drive motor (505) is fixedly connected to the right side of the water storage cylinder (502); an output end of the second drive motor (505) is fixedly connected to the rotating shaft (506); a T-shaped sealing plate (507) is fixedly connected to the outer surface of the rotating shaft (506); and the T-shaped sealing plate (507) initially blocks the connection between the V-shaped water pipe (503) and the water storage cylinder (502).

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