Sealing mechanism of steel fireproof door

Abstract

The sealing mechanism of the steel fireproof door comprises a door frame and a steel door, an installation groove is formed in the inner side of the door frame, sliding grooves are formed in the two sides of the middle of the two ends of the installation groove, sliding blocks are connected into the two sliding grooves in the same end in a sliding mode, and a same side plate is fixedly connected between the two sliding blocks in the same end. Vertical plates are fixedly connected to the two sides of the middles of the sides, away from each other, of the two side plates, and an inclined hole is formed in each vertical plate. According to the steel door, along with rotation of the two motors, the first rubber strip, the second rubber strip and the third rubber strip are all inserted into the grooves of the steel door and extruded, gaps around the steel door are effectively reduced, meanwhile, the first rubber strip, the second rubber strip and the third rubber strip are protected in cooperation with heat insulation rock wool strips, and the service life of the steel door is prolonged. And when a fire disaster occurs, the steel door is heated to deform, so that smoke generated by the fire disaster does not penetrate through the steel door.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof doors, in particular to a sealing mechanism of a steel fireproof door. Background Art

[0002] Steel fire doors are an important fire-fighting facility and are widely used in various types of buildings. Their main function is to prevent the spread of fire inside the building and to buy precious time for personnel escape and fire rescue. Steel fire doors play an important role in building fire safety and can provide effective protection for personnel escape and fire rescue.

[0003] In the prior art, when a steel fire door is in use, the gap between the door and the door frame is generally separated by a rubber sealing strip. When a fire occurs, the rubber sealing strip at the door gap will deform due to heat rise, causing smoke in the fire to penetrate to the other side of the steel fire door, affecting the evacuation of personnel and the rescue mission of firefighters. For this reason, a sealing mechanism for a steel fire door is designed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a sealing mechanism for a steel fireproof door.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A sealing mechanism for a steel fireproof door comprises a door frame and a steel door, wherein the inner side of the door frame is provided with a mounting groove, and sliding grooves are provided on both sides of the middle part of both ends of the mounting groove, and sliding blocks are slidably connected in the two sliding grooves at the same end, and the same side panel is fixedly connected between the two sliding blocks at the same end, and vertical plates are fixedly connected on both sides of the middle part of the side away from each other, and an inclined hole is provided on each of the vertical plates, and the same lifting block is slidably connected between the two vertical plates on the same side, and sliding rods are fixedly connected at both ends of the two lifting blocks, and each sliding rod is slidably connected in the adjacent inclined holes, and a first screw rod is threaded through each lifting block, and a threaded hole adapted to the first screw rod is provided on each lifting block, and the top of each first screw rod is rotatably connected to one end of the top of the mounting groove.

[0007] As a further solution of the utility model, the circumferential surfaces of the two first screw rods at the top are threadedly connected to the same top plate, threaded holes matching the first screw rods are opened at both ends of the top plate, and a first rubber strip is fixedly connected to the middle position of the bottom of the top plate.

[0008] As a further solution of the utility model, a second rubber strip is fixedly connected to the middle part of the side where the two side panels are close to each other.

[0009] As a further solution of the utility model, the bottom of the two first screw rods are fixedly connected to a second screw rod, and the thread direction of the second screw rod is opposite to that of the first screw rod. The bottom of the two second screw rods are rotatably connected to the two ends of the bottom of the mounting groove. The setting of the second screw rod ensures that when the top plate descends with the first screw rod, the bottom plate will also rise.

[0010] As a further solution of the utility model, both ends of the bottom of the two second screw rods are threadedly connected to the same bottom plate, both ends of the bottom of the bottom plate are provided with threaded holes compatible with the second screw rods, and a third rubber strip is fixedly connected to the middle position of the top of the bottom plate.

[0011] As a further solution of the utility model, both ends of the top of the outer wall of the door frame are fixedly connected to motors, the bottom output ends of the two motors pass through the door frame and are fixedly connected to the top of the adjacent first screw rods, and U-shaped covers are fixedly connected to the top of the door frame at the two motors.

[0012] As a further solution of the utility model, a groove is opened at the edge of the steel door, and both sides of the inner wall of the groove are fixedly connected with heat insulating rock wool strips, so that the heat insulation effect is achieved by the heat insulating rock wool strips.

[0013] The beneficial effects of the utility model are:

[0014] The utility model adopts the technical means of a steel door, a groove, a heat-insulating rock wool strip, a top plate, a first rubber strip, a first screw rod, a side plate, a second rubber strip, a bottom plate, a third rubber strip, a slider, a vertical plate, an inclined hole, a lifting block, a sliding rod and a second screw rod. After the steel door is closed, two motors are started to drive the two first screw rods to rotate synchronously, so that the top plate descends with the first rubber strip, so that the first rubber strip is stuck in the middle position of the top of the groove. At the same time, the two first screw rods rotate, so that the lifting blocks on both sides descend, and the sliding rod slides in the inclined hole, so that the side plates are pushed toward the steel door through the vertical plate, so that the second rubber strip is stuck in the middle position on both sides of the groove. The first screw rod is arranged at the same time, and the rotation of the first screw rod drives the second screw rod to rotate. Since the thread direction of the second screw rod is opposite to that of the first screw rod, the bottom plate rises, and the third rubber strip is stuck in the middle position of the bottom of the groove, which effectively solves the problem raised in the background technology, and then realizes that with the rotation of the two motors, the first rubber strip, the second rubber strip and the third rubber strip are all inserted into the groove of the steel door and squeezed, which effectively reduces the gap around the steel door. At the same time, with the help of the heat-insulating rock wool strip, the first rubber strip, the second rubber strip and the third rubber strip are protected to prevent them from being deformed by heat in case of fire, so that the smoke generated by the fire will not pass through the steel door. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the overall structure of a sealing mechanism for a steel fire door proposed by the utility model;

[0016] Figure 2 This is a structural schematic diagram of a steel door of a sealing mechanism of a steel fire door proposed by the utility model;

[0017] Figure 3 This is a schematic cross-sectional structure diagram of a door frame of a sealing mechanism of a steel fireproof door proposed in the utility model;

[0018] Figure 4 The utility model provides a sealing mechanism for a steel fire door. Figure 3 Schematic diagram of the enlarged structure at A.

[0019] In the figure: 1. door frame; 101. mounting groove; 102. slide groove; 2. U-shaped cover; 3. motor; 4. steel door; 5. groove; 6. thermal insulation rock wool strip; 7. top plate; 8. first rubber strip; 9. first screw rod; 11. side plate; 12. second rubber strip; 13. bottom plate; 14. third rubber strip; 15. slider; 16. vertical plate; 17. inclined hole; 18. lifting block; 19. slide rod; 20. second screw rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] Reference Figure 1-Figure 4 , a sealing mechanism of a steel fire door comprises a door frame 1 and a steel door 4, a mounting groove 101 is provided on the inner side of the door frame 1, and sliding grooves 102 are provided on both sides of the middle of both ends of the mounting groove 101, and sliders 15 are slidably connected in the two sliding grooves 102 at the same end, and the same side panel 11 is fixedly connected between the two sliders 15 at the same end, and vertical plates 16 are fixedly connected on both sides of the middle of the side away from each other of the two side panels 11, and each vertical plate 16 is provided with an inclined hole 17, and the same lifting block 18 is slidably connected between the two vertical plates 16 on the same side, and sliding rods 19 are fixedly connected at both ends of the two lifting blocks 18, and each sliding rod 19 is slidably connected in the adjacent inclined holes 17, and a first screw rod 9 is threadedly penetrated on each lifting block 18, and a threaded hole adapted to the first screw rod 9 is provided on each lifting block 18, and the top of each first screw rod 9 is rotatably connected to one end of the top of the mounting groove 101.

[0023] In this embodiment, the circumferential surfaces of the two first screw rods 9 at the top are both threadedly connected to the same top plate 7, both ends of the top plate 7 are provided with threaded holes compatible with the first screw rods 9, and a first rubber strip 8 is fixedly connected to the middle position of the bottom of the top plate 7.

[0024] In this embodiment, the middle portions of the adjacent sides of the two side panels 11 are both fixedly connected with the second rubber strip 12 .

[0025] In this embodiment, the bottoms of the two first screw rods 9 are fixedly connected to the second screw rods 20 , and the thread direction of the second screw rods 20 is opposite to that of the first screw rods 9 . The bottoms of the two second screw rods 20 are rotatably connected to the two ends of the bottom of the installation groove 101 .

[0026] In this embodiment, both ends of the bottom of the two second screw rods 20 are threadedly connected to the same bottom plate 13, both ends of the bottom of the bottom plate 13 are provided with threaded holes adapted to the second screw rods 20, and a third rubber strip 14 is fixedly connected to the middle position of the top of the bottom plate 13.

[0027] In this embodiment, motors 3 are fixedly connected at both ends of the top of the outer wall of the door frame 1, and the bottom output ends of the two motors 3 pass through the door frame 1 and are fixedly connected to the tops of the adjacent first screw rods 9. A U-shaped cover 2 is fixedly connected to the top of the door frame 1 at the two motors 3. The two first screw rods 9 are rotated synchronously by the two motors 3, driving the second screw rod 20 to rotate, so that the top plate 7, the side plate 11 and the bottom plate 13 are closer to each other toward the steel door 4.

[0028] In this embodiment, a groove 5 is opened at the edge of the steel door 4, and insulating rock wool strips 6 are fixedly connected to both sides of the inner wall of the groove 5. The insulating rock wool strips 6 are used to protect the first rubber strip 8, the second rubber strip 12 and the third rubber strip 14.

[0029] Working principle: After closing the steel door 4, the sealing mechanism of this steel fire door starts the two motors 3, so that the two first screw rods 9 are driven to rotate synchronously, so that the top plate 7 and the first rubber strip 8 are lowered, so that the first rubber strip 8 is stuck in the middle position of the top of the groove 5, and at the same time, the two first screw rods 9 rotate, so that the lifting blocks 18 on both sides are lowered, and the sliding rods 19 slide in the inclined holes 17, so that the side plates 11 are pushed toward the steel door 4 through the vertical plates 16, so that the second rubber strip 12 is stuck in the middle position on both sides of the groove 5. At the same time, the rotation of the first screw rod 9 drives the second screw rod 20 to rotate. Since the thread direction of the second screw rod 20 is opposite to that of the first screw rod 9, the bottom plate 13 rises, and the third rubber strip 14 is stuck in the middle position of the bottom of the groove 5. Through the setting of the heat-insulating rock wool strip 6, the first rubber strip 8, the second rubber strip 12 and the third rubber strip 14 are protected to prevent heat deformation during fire, so that the smoke generated by the fire will not pass through the steel door 4.

[0030] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A sealing mechanism for a steel fire door, comprising a door frame (1) and a steel door (4), characterized in that: The door frame (1) has an installation groove (101) on the inner side, and slide grooves (102) are provided on both sides of the middle of both ends of the installation groove (101), and sliders (15) are slidably connected in the two slide grooves (102) at the same end, and the same side plate (11) is fixedly connected between the two sliders (15) at the same end, and vertical plates (16) are fixedly connected on both sides of the middle of the side away from each other of the two side plates (11), and each vertical plate (16) has an inclined hole (17), and the two vertical plates (16) on the same side are fixedly connected to each other. A same lifting block (18) is slidably connected between the vertical plates (16), and both ends of the two lifting blocks (18) are fixedly connected with sliding rods (19), and each of the sliding rods (19) is slidably connected in adjacent inclined holes (17). A first screw rod (9) is threadedly penetrated on each of the lifting blocks (18), and a threaded hole matched with the first screw rod (9) is opened on each of the lifting blocks (18), and the top of each of the first screw rods (9) is rotatably connected to one end of the top of the mounting groove (101).

2. A sealing mechanism for a steel fire door according to claim 1, characterized in that: The circumferential surfaces of the two first screw rods (9) at the top are both threadedly connected to the same top plate (7), both ends of the top plate (7) are provided with threaded holes matched with the first screw rods (9), and a first rubber strip (8) is fixedly connected to the middle position of the bottom of the top plate (7).

3. The sealing mechanism of a steel fire door according to claim 1, characterized in that: A second rubber strip (12) is fixedly connected to the middle of one side of the two side panels (11) that are close to each other.

4. The sealing mechanism of a steel fire door according to claim 1, characterized in that: The bottoms of the two first screw rods (9) are fixedly connected to a second screw rod (20), and the thread direction of the second screw rod (20) is opposite to that of the first screw rod (9). The bottoms of the two second screw rods (20) are rotatably connected to the two ends of the bottom of the installation groove (101).

5. The sealing mechanism of a steel fire door according to claim 4, characterized in that: Both ends of the bottom of the two second screw rods (20) are threadedly connected to the same bottom plate (13), both ends of the bottom of the bottom plate (13) are provided with threaded holes that are compatible with the second screw rods (20), and a third rubber strip (14) is fixedly connected to the middle position of the top of the bottom plate (13).

6. The sealing mechanism of a steel fire door according to claim 1, characterized in that: Motors (3) are fixedly connected to both ends of the top of the outer wall of the door frame (1); the bottom output ends of the two motors (3) pass through the door frame (1) and are fixedly connected to the tops of adjacent first screw rods (9); and a U-shaped cover (2) is fixedly connected to the top of the door frame (1) at the two motors (3).

7. The sealing mechanism of a steel fire door according to claim 1, characterized in that: A groove (5) is provided at the edge of the steel door (4), and heat-insulating rock wool strips (6) are fixedly connected to both sides of the inner wall of the groove (5).

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