Pneumatic control device for fireproof door

Abstract

The utility model discloses a pneumatic control device for a fireproof door, which belongs to the technical field of fireproof doors and comprises an adjusting component for opening and closing a door plate, a door frame is sleeved outside the door plate, and the door plate is hinged with the door frame through a hinge; the adjusting assembly comprises a box body installed on the top of the door frame, a supporting shaft is arranged in the box body, and the bottom end of the supporting shaft is movably connected with the inner wall of the box body through a bearing. The connecting support and the toothed plate which are connected with the sealing plate are pushed to move through expansion of air, the toothed plate drives the supporting shaft to rotate through the meshed gear so that the door plate can be closed, meanwhile, the air is conveyed into the adjusting box through the communicating pipe which is not shielded by the sealing plate, and the door plate can be adjusted. And then clamping teeth on the movable plate are pushed to be clamped with the toothed plate, the effect of limiting and fixing the toothed plate is achieved, the toothed plate is prevented from moving in a fire disaster, and the stability of the toothed plate is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire doors, and in particular relates to a pneumatic control device for fire doors. Background Art

[0002] Fire doors are a special type of door designed to prevent the spread of fire, protect the building structure, and provide a safe passage for evacuation. In the event of a fire, fire doors can maintain their fire resistance, thermal insulation, and stability for a certain period of time, thereby playing a role in controlling the fire and reducing casualties and property losses.

[0003] A pneumatic control device for a fire door is a device that uses pneumatic principles to control the opening and closing of a fire door, as shown in the prior art with publication number CN216277563U. Although this prior art utilizes the principle of thermal expansion and contraction to compress the door panel when a fire occurs, this prior art does not have the effect of limiting the position of the tooth column, resulting in the tooth column shaking. The shaking of the tooth column affects the stability of the overall structure, causing this prior art to have a problem of insufficient stability. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a pneumatic control device for fire doors, which pushes the connecting bracket and the tooth plate connected to the sealing plate to move by the expansion of air, and the tooth plate then drives the support shaft to rotate through the meshing gears, so as to achieve the closing of the door panel. At the same time, the air is transported to the inside of the adjustment box through the connecting pipe that is not blocked by the sealing plate, and then the teeth on the movable plate are pushed to engage with the tooth plate, so as to achieve the effect of limiting and fixing the tooth plate, preventing the tooth plate from being displaced in a fire, and ensuring the stability of the tooth plate, so as to solve the problems arising from the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a pneumatic control device for a fire door, comprising an adjustment assembly for opening and closing a door panel, wherein the door panel is externally sleeved with a door frame, and the door panel is hingedly connected to the door frame via a hinge; the adjustment assembly comprises a box body mounted on the top of the door frame, a support shaft is provided inside the box body, the bottom end of the support shaft is movably connected to the inner wall of the box body via a bearing, and a linkage assembly for connecting to the door panel is provided on the outside of the top end of the support shaft;

[0006] A gear is sleeved on the outside of the bottom end of the support shaft, a tooth plate is meshed on the front side of the gear, a hollow plate is provided on the front side of the tooth plate and is installed inside the box body, a sealing plate is provided inside the hollow plate, a connecting bracket is installed on the side of the sealing plate close to the door panel, and the end of the connecting bracket away from the sealing plate passes through the hollow plate and is fixed to the front side of the tooth plate.

[0007] Furthermore, an adjustment box installed inside the box body is provided on the rear side of one end of the tooth plate close to the door panel, and a latch engaging with the tooth plate is provided on the front side of the adjustment box. A movable column is installed on the rear sides of both ends of the latch, and the rear ends of the two movable columns are provided with a movable sealing plate provided inside the adjustment box, and the rear ends of the movable columns pass through the adjustment box and are fixed together with the movable sealing plate. A spring is provided on the external sleeve of one end of the movable column close to the movable sealing plate.

[0008] The rear side of the regulating box is fixedly connected with a communicating pipe, the communicating pipe extends to the bottom of the box body near the door panel at one end away from the regulating box, and the end of the communicating pipe away from the regulating box is fixedly connected with the box body.

[0009] Furthermore, the linkage assembly includes a linkage plate arranged on the top of the box body, the top end of the support shaft passes through the box body and is fixed to the linkage plate, and a linkage bracket for connecting to the door panel is installed on the front side of the linkage plate.

[0010] Furthermore, a transfer box is installed on the front side of the box body, and a plurality of heat conducting plates are provided on the front side of the transfer box, and the rear ends of the heat conducting plates pass through the transfer box and extend into the interior of the transfer box; the end of the transfer box away from the door panel is fixedly connected to a delivery pipe, and the end of the delivery pipe away from the transfer box passes through the box body and extends to the interior of the hollow panel.

[0011] Furthermore, the cross-sections of the movable sealing plate and the regulating box are both set to be rectangular, and the outer portion of the movable sealing plate is in contact with the inner wall of the regulating box.

[0012] Furthermore, the communicating pipe is arranged on a side of the sealing plate away from the door panel.

[0013] Furthermore, the axis of the support shaft coincides with the axis of the hinge.

[0014] The technical effects and advantages of this utility model are:

[0015] The expansion of air pushes the connecting bracket and the tooth plate connected to the sealing plate to move, and the tooth plate then drives the support shaft to rotate through the meshing gears, thereby closing the door panel. At the same time, the air is transported to the inside of the adjustment box through the connecting pipe that is not blocked by the sealing plate, and then the teeth on the movable plate are pushed to engage with the tooth plate, thereby achieving the effect of limiting and fixing the tooth plate, preventing the tooth plate from displacement during fire, and ensuring the stability of the tooth plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 For the utility model Figure 1 Enlarged view of part A.

[0018] Figure 3It is a cross-sectional view of the box body of the present utility model.

[0019] Figure 4 It is a top sectional view of the box body of the present utility model.

[0020] Figure 5 For the utility model Figure 4 Enlarged view of part B.

[0021] The figures are marked as follows: 1. door panel; 2. door frame; 3. box body; 4. support shaft; 5. gear; 6. tooth plate; 7. hollow plate; 8. sealing plate; 9. connecting bracket; 10. adjustment box; 11. latch; 12. movable column; 13. movable sealing plate; 14. spring; 15. connecting pipe; 16. linkage plate; 17. linkage bracket; 18. transfer box; 19. heat conducting plate; 20. delivery pipe. DETAILED DESCRIPTION

[0022] Refer to the instruction manual Figures 1 to 5 The utility model provides a pneumatic control device for a fire door, comprising an adjustment component for opening and closing a door panel 1, wherein a door frame 2 is sleeved on the outside of the door panel 1, and the door panel 1 is hinged to the door frame 2 through a hinge.

[0023] like Figure 1 As shown, the adjustment component includes a box body 3 installed on the top of the door frame 2, a support shaft 4 is provided inside the box body 3, the bottom end of the support shaft 4 is movably connected to the inner wall of the box body 3 through a bearing, and a linkage component for connecting to the door panel 1 is provided on the outside of the top end of the support shaft 4.

[0024] like Figures 2 to 5 As shown, a gear 5 is sleeved on the outside of the bottom end of the support shaft 4, and a tooth plate 6 is meshed with the front side of the gear 5. A hollow plate 7 installed inside the box body 3 is provided on the front side of the tooth plate 6. A sealing plate 8 is provided inside the hollow plate 7. A connecting bracket 9 is installed on the side of the sealing plate 8 close to the door panel 1. The end of the connecting bracket 9 away from the sealing plate 8 passes through the hollow plate 7 and is fixed to the front side of the tooth plate 6. An adjustment box 10 installed inside the box body 3 is provided on the rear side of the end of the tooth plate 6 close to the door panel 1. A latch 11 meshing with the tooth plate 6 is provided on the front side of the adjustment box 10. Movable columns 12 are installed on the rear sides of both ends of the latch 11. The rear ends of the two movable columns 12 are provided with the same movable sealing plate 13 installed inside the adjustment box 10. The rear ends of the movable columns 12 pass through the adjustment box 10 and are fixed to the movable sealing plate 13. A spring 14 is sleeved on the external side of the end of the movable column 12 close to the movable sealing plate 13. A connecting pipe 15 is fixedly connected to the rear side of the regulating box 10. The connecting pipe 15 extends from one end away from the regulating box 10 to the bottom of the box body 3 close to the door panel 1, and the end of the connecting pipe 15 away from the regulating box 10 is fixedly connected to the box body 3. The connecting pipe 15 is arranged on the side of the sealing plate 8 away from the door panel 1. When the sealing plate 8 pushes the tooth plate 6 to move to the appropriate position, the connecting pipe 15 will be exposed and connected to the regulating box 10, and the axis of the support shaft 4 coincides with the axis of the hinge.

[0025] When a fire occurs, the heat conducting plate 19 absorbs heat to heat the air in the transfer box 18. Then, by the principle of thermal expansion and contraction, the hot air can flow through the delivery pipe 20 to the inside of the hollow plate 7, and push the connecting bracket 9 and the tooth plate 6 on the sealing plate 8 to move. The tooth plate 6 rotates the support shaft 4 through the gear 5, and the support shaft 4 drives the door panel 1 to flip inward and close it through the linkage plate 16 and the linkage bracket 17, thereby preventing the spread of fire.

[0026] When the sealing plate 8 is moved to the appropriate position, the hot air in the hollow plate 7 flows to the inside of the adjustment box 10 through the connecting pipe 15, and pushes the movable sealing plate 13 to move forward. The movable sealing plate 13 then drives the locking teeth 11 to engage with the tooth plate 6 through the movable column 12, thereby limiting and fixing the tooth plate 6 to prevent the tooth plate 6 from being displaced during a fire, thereby ensuring the stability of the tooth plate 6.

[0027] In order to make the support shaft 4 drive the door panel 1 to move, Figure 1 As shown, the linkage assembly includes a linkage plate 16 arranged on the top of the box body 3, the top end of the support shaft 4 passes through the box body 3 and is fixed to the linkage plate 16, and a linkage bracket 17 for connecting the door panel 1 is installed on the front side of the linkage plate 16. The support shaft 4 drives the linkage plate 16 to rotate, and the linkage plate 16 then drives the door panel 1 to rotate via the linkage bracket 17, thereby achieving the effect of opening and closing the door panel 1.

[0028] At the same time, the utility model also uses thermal energy as power, such as Figures 2-4 As shown, a transfer box 18 is installed on the front side of the box body 3 of the present invention, and a plurality of heat conducting plates 19 are provided on the front side of the transfer box 18. The rear ends of the heat conducting plates 19 pass through the transfer box 18 and extend into the interior of the transfer box 18. The end of the transfer box 18 away from the door panel 1 is fixedly connected to a delivery pipe 20. The end of the delivery pipe 20 away from the transfer box 18 passes through the box body 3 and extends into the interior of the hollow plate 7. The air in the transfer box 18 is heated by heat transfer of the heat conducting plates 19, so that the sealing plate 8 and the movable sealing plate 13 in the present invention can be driven to move by thermal expansion and contraction.

[0029] In addition, the utility model sets the cross-section of the movable sealing plate 13 and the cross-section of the adjustment box 10 to be rectangular, and the outer side of the movable sealing plate 13 contacts the inner wall of the adjustment box 10, so that the adjustment box 10 can limit the movable sealing plate 13 and ensure the stability of the movable sealing plate 13 during movement.

Claims

1. A pneumatic control device for a fire door, characterized by: The invention relates to an adjustment component for opening and closing a door panel (1), wherein the door panel (1) is externally sleeved with a door frame (2), and the door panel (1) is hinged to the door frame (2) via a hinge; the adjustment component comprises a box body (3) mounted on the top of the door frame (2), a support shaft (4) is provided inside the box body (3), the bottom end of the support shaft (4) is movably connected to the inner wall of the box body (3) via a bearing, and a linkage component for connecting to the door panel (1) is provided on the outside of the top end of the support shaft (4); a gear (5) is sleeved outside the bottom end of the support shaft (4), a tooth plate (6) is meshed with the front side of the gear (5), a hollow plate (7) mounted inside the box body (3) is provided on the front side of the tooth plate (6), a sealing plate (8) is provided inside the hollow plate (7), a connecting bracket (9) is installed on the side of the sealing plate (8) close to the door panel (1), and the end of the connecting bracket (9) away from the sealing plate (8) passes through the hollow plate (7) and is fixed to the front side of the tooth plate (6).

2. A fire door pneumatic control device according to claim 1, characterized in that: The tooth plate (6) is provided with an adjustment box (10) installed inside the box body (3) at the rear side of one end close to the door panel (1), and the adjustment box (10) is provided with a latch (11) meshed with the tooth plate (6) at the front side, and movable columns (12) are installed at the rear sides of both ends of the latch (11), and the rear ends of the two movable columns (12) are provided with a same movable sealing plate (13) provided inside the adjustment box (10), and the rear ends of the movable columns (12) pass through the adjustment box (10) and are fixed together with the movable sealing plate (13), and the end of the movable column (12) close to the movable sealing plate (13) is provided with a spring (14) on the outside; the adjustment box (10) is fixedly connected with a connecting pipe (15) at the rear side, and the connecting pipe (15) extends from one end away from the adjustment box (10) to the bottom of one end of the box body (3) close to the door panel (1), and the end of the connecting pipe (15) away from the adjustment box (10) is fixedly connected with the box body (3).

3. The pneumatic control device for a fire door according to claim 1, characterized in that: The linkage assembly comprises a linkage plate (16) disposed on the top of the box body (3); the top end of the support shaft (4) passes through the box body (3) and is fixed to the linkage plate (16); and a linkage bracket (17) for connecting to the door panel (1) is installed on the front side of the linkage plate (16).

4. A fire door pneumatic control device according to claim 1, characterized in that: A transfer box (18) is installed on the front side of the box body (3), and a plurality of heat conducting plates (19) are provided on the front side of the transfer box (18). The rear ends of the heat conducting plates (19) pass through the transfer box (18) and extend into the interior of the transfer box (18). An end of the transfer box (18) away from the door panel (1) is fixedly connected to a delivery pipe (20), and an end of the delivery pipe (20) away from the transfer box (18) passes through the box body (3) and extends into the interior of the hollow plate (7).

5. The pneumatic control device for a fire door according to claim 2, characterized in that: The cross-sections of the movable sealing plate (13) and the regulating box (10) are both rectangular, and the exterior of the movable sealing plate (13) is in contact with the inner wall of the regulating box (10).

6. A fire door pneumatic control device according to claim 2, characterized in that: The connecting pipe (15) is provided on a side of the sealing plate (8) away from the door panel (1).

7. The pneumatic control device for a fire door according to claim 1, characterized in that: The axis of the support shaft (4) coincides with the axis of the hinge.

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