Smoke insulation steel fireproof door

Abstract

The utility model relates to the field of fireproof doors, in particular to a smoke isolation steel fireproof door which comprises a main body, sliding plates are arranged at the upper end and the lower end of the main body in a sliding mode, first sealing strips are installed on the sides, away from each other, of the two sliding plates, and second sealing strips are installed at the positions, at the two ends of the sliding plates, of the main body. A first sealing strip is arranged between each sliding plate and the main body, a second sealing strip is arranged between each sliding plate and the main body, a third sealing strip is arranged between each sliding plate and the main body, and elastic assemblies are arranged between the two sliding plates and the main body. Therefore, the sliding plate component has a certain lifting space, the sliding plate component drives the corresponding first sealing strips to move along with the sliding plate component while moving, the positions of the first sealing strips at the upper end and the lower end of the main body are changed, the sealing strips are matched with the second sealing strips to seal the periphery of the main body, and the purpose of improving the smoke isolation effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire door technical field, concretely is a smoke isolation steel fire door. BACKGROUND

[0002] With the continuous improvement of building fire safety requirements, the smoke isolation steel fire door as the key facility of preventing fire spreading and smoke diffusion, the performance of which is directly related to personnel evacuation and life and property safety.

[0003] Through the search, the China patent with the publication number CN215108516U discloses a kind of smoke isolation steel fire door, and its technical points are as follows: by rotating screw rod and moving the fire door panel connected by fixed seat, the door frame is tightened by the sealing gasket fixedly connected on the periphery of fire door, so that the external dense smoke cannot enter indoor, effectively isolates the dense smoke of outdoor from entering indoor, protects the safety of indoor personnel.

[0004] But in the prior art, the door may not completely fit the ground or the top of the door frame during installation, or it may deform during daily use due to the opening and closing of the door. The upper and lower door gaps are often the channels through which smoke easily enters, especially if the ground is uneven, the gap at the bottom of the door may be larger, causing smoke to rush in a large amount when a fire occurs. To solve the problem of large upper and lower door gaps in the prior art, which causes a large amount of smoke to rush in, the application sets lifting sealing rubber strips on the upper and lower parts of the main body, thereby improving the fit between the main body and the door frame, reducing the upper and lower door gaps, and avoiding a large amount of smoke from rushing in. Therefore, a new solution is needed to solve this problem. SUMMARY

[0005] In view of the above background technology, the prior art has the problem that the upper and lower door gaps are often the channels through which smoke easily enters, causing a large amount of smoke to rush in when a fire occurs.

[0006] The smoke isolation steel fire door disclosed by the utility model comprises a main body, a sliding plate is slidably arranged at the upper end and the lower end of the main body, a sealing strip one is installed on the side of the two sliding plates away from each other, a sealing strip two is installed on the main body at the two ends of the sliding plate, a sealing strip three is arranged between the sliding plate and the main body, and an elastic assembly is arranged between the two sliding plates and the main body.

[0007] Further, the elastic assembly comprises two springs, the two springs are arranged at the two ends of the sliding plate, a telescopic rod is arranged on the inner side of the spring, and the two ends of the telescopic rod are fixedly connected with the sliding plate and the main body.

[0008] Further, the middle part of the two sliding plates is provided with a vertical rod, the vertical rod is slidingly arranged on the main body, the two vertical rods are provided with a rack at the end close to each other, the two racks are engaged with a gear one, and the gear one is rotatably arranged on the main body through a rotating shaft.

[0009] Further, the two sides of the rack are provided with a guide plate, the guide plate is arranged on the main body, and the guide plate is slidingly arranged with the rack.

[0010] Further, the rotating shaft is provided with a gear two, the main body is provided with an outer shell on the outside, one end of the rotating shaft penetrates the outer shell, and a one-way component is arranged between the gear two and the outer shell.

[0011] Further, the one-way component comprises a limiting plate, the limiting plate is arranged in an inclined manner, one end of the limiting plate is rotatably arranged on the main body, a torsional spring is arranged between the limiting plate and the main body, and the other end of the limiting plate is arranged between the two teeth of the gear one.

[0012] Further, a driving rod is slidingly arranged on the outer shell, a sliding groove is arranged on the limiting plate, the driving rod penetrates the sliding groove, and the two ends of the driving rod are provided in a T shape.

[0013] Compared with the prior art, the utility model has the advantages of the following:

[0014] 1、 the utility model discloses a spring, telescopic rod, sliding plate and other components are set up, in the use process, through the cooperation between spring component and telescopic rod component, the sliding plate component can have certain lifting space, and the corresponding sealing strip one is moved along with the movement of the sliding plate component, thereby changing the position of the sealing strip one on the upper end and lower end of the main body, and realizing the sealing of the four sides of the main body in cooperation with the sealing strip two, so that the smoke isolation effect is improved.

[0015] 2、 the utility model discloses a vertical rod, rack, gear one, rotating shaft, gear two, limiting plate and other components are set up, in the working process, through the cooperation between vertical rod component, rack component and gear one component, the rotating shaft drives gear one to rotate, thereby driving two sliding plates to move, and realizing the adjustment of the relative position of the two sliding plates, simultaneously, gear two component and limiting plate component cooperate with each other, realize the automatic fixing of the rotating shaft, through the adjustment of the upward movement of the driving rod, the driving rod drives the one end of the limiting plate to separate from gear two, thereby removing the restriction of gear two, so that the rotating shaft can be reversely rotated. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the main body inside schematic view of the utility model;

[0019] Figure 3 It is the utility model Figure 2 Front view structure schematic view;

[0020] Figure 4 It is the utility model partial structure schematic view.

[0021] In the drawing: 1, main body;2, sliding plate;3, sealing strip one;4, sealing strip two;5, sealing strip three;6, spring;7, telescopic rod;8, vertical rod;9, rack;10, guide plate;11, gear one;12, rotating shaft;13, gear two;14, limiting plate;15, drive rod;16, sliding groove;17, shell. Specific implementation

[0022] The following will be disclosed with the figure the multiple embodiments of the utility model, for clear statement, many real details will be described in the following description. However, it should be appreciated that these real details should not be used to limit the utility model. That is, in some embodiments of the utility model, these real details are unnecessary. In addition, for the sake of simplifying the figure, some conventional structures and components will be drawn in the simple schematic way in the figure.

[0023] Please refer to Figure 1 、 Figure 2 The smoke-proof steel fire door of the utility model, including main body 1, the upper end and the lower end of main body 1 are slidably provided with sliding plate 2, the side away from each other of two sliding plates 2 is installed with sealing strip one 3, the main body 1 on the both ends of sliding plate 2 is installed with sealing strip two 4, sealing strip three 5 is arranged between sliding plate 2 and main body 1, and elastic assembly is arranged between two sliding plates 2 and main body 1.

[0024] Please refer to Figure 2 、 Figure 3 As shown, the elastic assembly includes spring 6, two springs 6 are arranged at the both ends of sliding plate 2, telescopic rod 7 is arranged in the inner side of spring 6, the position of spring 6 is limited by telescopic rod 7, so as to avoid the bending of spring 6 in the compression process, improve the service life of spring 6, and the both ends of telescopic rod 7 are fixedly connected with sliding plate 2 and main body 1 respectively.

[0025] In this embodiment, the middle part of each of the two sliding plates 2 is provided with a vertical rod 8, the vertical rod 8 is slidingly arranged on the main body 1, and the end of each of the two vertical rods 8 close to each other is provided with a rack 9, the connection between the rack 9 and the vertical rod 8 is triangular, thereby improving the connection stability between the vertical rod 8 and the rack 9, and the two racks 9 are engaged with a gear one 11, the gear one 11 is rotatably installed on the main body 1 through a rotating shaft 12.

[0026] In this embodiment, the two sides of the rack 9 are provided with guide plates 10, the guide plates 10 are installed on the main body 1, and the guide plates 10 are slidingly arranged with the rack 9, the position of the rack 9 is limited through the guide plates 10, thereby preventing the rack 9 from shaking or deviating during movement, and improving the engagement stability between the rack 9 and the gear one 11.

[0027] As shown in Figure 4 , the rotating shaft 12 is provided with a gear two 13, the outer side of the main body 1 is provided with an outer shell 17, one end of the rotating shaft 12 penetrates through the outer shell 17, and a one-way component is arranged between the gear two 13 and the outer shell 17.

[0028] In this embodiment, the one-way component includes a limiting plate 14, the limiting plate 14 is inclined, one end of the limiting plate 14 is rotatably installed on the main body 1, a torsional spring is arranged between the limiting plate 14 and the main body 1, the other end of the limiting plate 14 is arranged between the two teeth of the gear one 11, the rotating shaft 12 drives the gear two 13 to rotate while adjusting the rotation of the rotating shaft 12, the teeth on the gear two 13 drive one end of the limiting plate 14 to rotate, and at the same time the limiting plate 14 drives the torsional spring to store energy, when one end of the limiting plate 14 passes the tooth, the torsional spring drives the limiting plate 14 to rotate reversely, thereby limiting the gear two 13 and preventing the gear two 13 from rotating reversely.

[0029] In this embodiment, the outer shell 17 is slidingly provided with a driving rod 15, the limiting plate 14 is provided with a sliding groove 16, the driving rod 15 penetrates through the sliding groove 16, and the two ends of the driving rod 15 are provided as "T" shaped rotating shafts 12, and at this time the spring 6 in the energy storage.

[0030] The implementation principle is: when a fire occurs, the staff pulls up the driving rod 15, the driving rod 15 drives the limiting plate 14 to rotate and separate from the gear two 13, thereby releasing the fixation of the rotating shaft 12, at this time the spring 6 in the energy storage drives the sliding plate 2 to move, the sliding plate 2 drives the sealing strip one 3 to move, changes the position of the sealing strip one 3, improves the fitting effect with the door frame, at the same time drives the sealing strip one 3 and the sealing strip two 4 to cooperate with each other on the main body 1 to form a square frame structure, realizes the sealing and smoke prevention effect, and seals the sliding plate 2 and the main body 1 through the sealing strip three 5, further improves the smoke prevention effect.

[0031] The staff drives the rotation of the rotating shaft 12, the rotating shaft 12 drives the gear two 13 and the gear one 11 to move, the gear one 11 drives the two racks 9 to move, the two racks 9 drive the corresponding slide plates 2 to move, so that the mutual approach of the two slide plates 2 is realized, meanwhile, the slide plates 2 compress the springs 6, the gear two 13 rotates, and the limiting plate 14 limits the gear two 13, preventing the gear two 13 from rotating in the direction.

[0032] The above merely describes the implementation manners of the present application and is not intended to limit the present application. The present application can be changed and modified in various ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A smoke-tight steel fire door comprising a main body (1), characterized in that: The upper end and the lower end of the main body (1) are slidably provided with sliding plates (2), one side of the two sliding plates (2) away from each other is provided with a sealing strip one (3), the main body (1) on both ends of the sliding plate (2) is provided with a sealing strip two (4), the sealing strip three (5) is arranged between the sliding plate (2) and the main body (1), the elastic assembly is arranged between the two sliding plates (2) and the main body (1).

2. A smoke-proof steel fire door according to claim 1, characterized in that: The elastic assembly comprises springs (6), the two springs (6) are provided, the two springs (6) are arranged at both ends of the sliding plate (2), the inside of the spring (6) is provided with a telescopic rod (7), both ends of the telescopic rod (7) are fixedly connected with the sliding plate (2) and the main body (1) respectively.

3. The smoke resistant steel fire door of claim 1, wherein: The middle part of the two sliding plates (2) is provided with a vertical rod (8), the vertical rod (8) is slidably arranged on the main body (1), one end of the two vertical rods (8) away from each other is provided with a rack (9), the two racks (9) are engaged with a gear one (11), the gear one (11) is rotatably installed on the main body (1) through an axis (12).

4. A smoke resistant steel fire door according to claim 3, characterised in that: Both sides of the rack (9) are provided with guide plates (10), the guide plates (10) are installed on the main body (1), and the guide plates (10) and the rack (9) are slidably arranged.

5. The smoke resistant steel fire door according to claim 3, wherein: The axis (12) is provided with a gear two (13), the main body (1) is provided with an outer shell (17), one end of the axis (12) penetrates through the outer shell (17), and the gear two (13) and the outer shell (17) are provided with a one-way assembly.

6. A smoke resistant steel fire door according to claim 5, characterised in that: The one-way assembly comprises a limiting plate (14), the limiting plate (14) is arranged obliquely, one end of the limiting plate (14) is rotatably installed on the main body (1), a torsional spring is arranged between the limiting plate (14) and the main body (1), and the other end of the limiting plate (14) is arranged between the two teeth of the gear one (11).

7. A smoke resistant steel fire door according to claim 6, characterised in that: The outer shell (17) is slidably provided with a driving rod (15), the limiting plate (14) is provided with a sliding groove (16), the driving rod (15) penetrates through the sliding groove (16), and both ends of the driving rod (15) are provided with a "T" shape.

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