Turnover type self-resetting explosion venting door

Abstract

The utility model discloses a turnover type self-resetting explosion venting door which comprises a door frame, an explosion venting door body is arranged on the front face of the door frame, and the explosion venting door body is movably connected with the door frame. A door cover is arranged on the outer side of the door frame. A door curtain is movably connected to the side, away from the door frame, of the door cover. Two flanges are symmetrically installed at the upper ends of the two side walls of the door cover, and a plummer block is installed in each flange. A rotating shaft is assembled between every two adjacent mounted bearings, and the rotating shafts are connected with the explosion venting door through crank connecting rods. According to the utility model, the turnable explosion venting door is mounted on the door frame, so that when an explosion occurs indoors, the explosion venting door is pushed to turn over outwards to be opened under the action of explosion shock waves, and an enough pressure relief channel is formed; after the indoor pressure is released, the explosion venting door and the door curtain can be automatically reset and closed under the action of the self weight and the balancing weight and restore to the initial sealing state, the quick opening and automatic reset functions of the explosion venting door are achieved, and the timeliness and effect of pressure relief are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof doors, in particular to a flip-over self-resetting explosion-proof door. Background Art

[0002] Explosion-proof doors are usually used in industrial and civilian factories, boiler rooms, dangerous goods warehouses, military warehouses, pharmaceutical companies, etc. Explosion-proof doors are a type of door that opens windows and releases pressure through explosion-proof accessories or devices at the moment of an indoor explosion to control the explosion or minimize the degree of damage, ensuring that the internal equipment of the building is intact, ensuring that the overall structure of the building is intact and not harmed by the explosion shock wave, and preventing the explosion danger from continuing.

[0003] However, the existing explosion-proof doors still have the disadvantages of slow reaction speed and untimely pressure relief. They are one-time destruction devices, the pressure relief process is not smooth enough, and the effect is not ideal. Moreover, in actual use, due to the limitations of the installation site, it is difficult for the staff to arrive at the site in time to manually open the pressure relief door for pressure relief operation, which can easily lead to safety accidents. Summary of the invention

[0004] The utility model aims to provide a flip-over self-resetting explosion-proof door to solve the problems raised in the above-mentioned background technology.

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

[0006] A flip-up self-resetting explosion-proof door comprises a door frame, wherein the explosion-proof door is provided on the front side of the door frame, wherein the explosion-proof door is movably connected to the door frame; a door cover is provided on the outer side of the door frame, wherein a door curtain is movably connected to the door cover on the side away from the door frame; two flanges are symmetrically mounted on the upper ends of both side walls of the door cover, wherein a bearing with a seat is mounted in each flange; a rotating shaft is mounted between two adjacent bearings with a seat, wherein the rotating shaft is connected to the explosion-proof door via a crank connecting rod.

[0007] Preferably, two crank connecting rods are provided, wherein the upper end of the crank connecting rod is fixedly connected to the rotating shaft, and the lower end of the crank connecting rod is movably connected to the explosion relief door.

[0008] Preferably, a fixing ring is provided at the upper end of the crank connecting rod, wherein the fixing ring is sleeved on the outer wall of the rotating shaft and fixedly connected by bolts; a pin hole is opened at the lower end of the crank connecting rod, wherein a rotating pin is provided in the pin hole; a hinge seat is fixedly installed on the explosion-proof door, wherein the crank connecting rod and the hinge seat are rotatably connected by a rotating pin.

[0009] Preferably, both ends of the rotating shaft respectively pass through the seat bearing and extend to both sides, wherein a handle is provided at the extended end of each rotating shaft.

[0010] Preferably, the handle is connected to the rotating shaft via a keyway, wherein a counterweight is mounted on the handle.

[0011] Preferably, the inner cavity of the explosion vent door is a grid-like structure, wherein each grid cavity is filled with silicone foam.

[0012] Preferably, the size of the explosion-proof door is larger than the inner size of the door frame, wherein a sealing strip is provided around the explosion-proof door on one side close to the door frame; and a sealing groove matched with the sealing strip is provided around the door frame.

[0013] Preferably, the door curtain and the door cover are both made of steel, wherein the upper end of the door curtain is rotatably connected to the door cover via a hinge.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model installs a reversible explosion-proof door on the door frame. When an explosion occurs indoors, the pressure generated needs to be released quickly. Since the rotating shaft is connected to the explosion-proof door through a crank-connecting rod, the rotation of the rotating shaft is converted into linear motion of the crank-connecting rod, which pushes the explosion-proof door to flip outward and open under the action of the explosion shock wave, thereby forming a sufficient pressure relief channel; at the same time, the door curtain will automatically open as the explosion-proof door opens under the rotational connection of the door cover, thereby ensuring that the pressure relief channel is unobstructed; when the indoor pressure is released, the explosion-proof door and the door curtain will automatically reset and close under the action of their own weight and the counterweight block, and return to the initial sealing state, thereby realizing the rapid opening and automatic resetting functions of the explosion-proof door, and improving the timeliness and effect of pressure relief. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a side view of the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 4 yes Figure 3 The AA structure cross-sectional view shown;

[0019] Figure 5 yes Figure 4 An enlarged schematic diagram of the structure at B is shown;

[0020] Figure 6 It is a structural schematic diagram of a crank connecting rod of the utility model.

[0021] Among them: 1. Door frame; 2. Explosion-proof door; 3. Door cover; 4. Door curtain; 5. Flange; 6. Bearing with seat; 7. Rotating shaft; 8. Crank connecting rod; 9. Fixed ring; 10. Bolt; 11. Pin hole; 12. Rotating pin; 13. Articulated seat; 14. Handle; 15. Counterweight; 16. Silicone foam; 17. Sealing strip; 18. Sealing groove; 19. Hinge. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] Please refer to Figures 1 to 6 To achieve the above purpose, the utility model provides the following technical solutions:

[0024] A flip-type self-resetting explosion-proof door comprises a door frame 1, wherein an explosion-proof door 2 is arranged on the front side of the door frame 1, wherein the explosion-proof door 2 is movably connected to the door frame 1; a door cover 3 is arranged on the outer side of the door frame 1, wherein a door curtain 4 is movably connected to the side of the door cover 3 away from the door frame 1; two flanges 5 are symmetrically mounted on the upper ends of both side walls of the door cover 3, wherein a bearing with a seat 6 is mounted in each flange 5; a rotating shaft 7 is mounted between two adjacent bearings with a seat 6, wherein the rotating shaft 7 is connected to the explosion-proof door 2 via a crank connecting rod 8. In the initial state, the explosion-proof door 2 is in a normally closed state, forming a good seal to prevent the exchange of indoor and outdoor air and impurities, wherein the door curtain 4 is connected to the door cover 3 by a movable connection, and also remains in a closed state. The door cover 3 and the door curtain 4 form a wrapped shell, which plays a role of windproof, rainproof and heat preservation; the rotating shaft 7 is installed between the flanges 5 on the two side walls of the door cover 3 through the seat bearing 6, and the crank connecting rod 8 is connected between the rotating shaft 7 and the explosion-proof door 2, and the crank connecting rod 8 is in an unstressed state at this time; when an explosion occurs indoors, the pressure generated needs to be released quickly. Since the rotating shaft 7 is connected to the explosion-proof door 2 through the crank connecting rod 8, the rotation of the rotating shaft 7 will be converted into a linear motion of the crank connecting rod 8, and the explosion-proof door 2 is pushed to flip outward and open under the action of the explosion shock wave, forming a sufficient pressure relief channel, so that the pressure and shock wave generated by the explosion can be smoothly released to the outdoors. After the pressure relief is completed, the explosion-proof door 2 automatically resets and closes, and returns to the initial sealing state, realizing the rapid opening and automatic reset function of the explosion-proof door 2, and improving the timeliness and effect of pressure relief.

[0025] Please refer to Figures 3 to 6 As an embodiment of the utility model, two crank connecting rods 8 are provided, wherein the upper end of the crank connecting rod 8 is fixedly connected to the rotating shaft 7, and the lower end of the crank connecting rod 8 is movably connected to the explosion-proof door 2; a fixing ring 9 is provided at the upper end of the crank connecting rod 8, wherein the fixing ring 9 is sleeved on the outer wall of the rotating shaft 7 and fixedly connected by bolts 10; a pin hole 11 is opened at the lower end of the crank connecting rod 8, wherein a rotating pin 12 is provided in the pin hole 11; a hinge seat 13 is fixedly installed on the explosion-proof door 2, wherein the crank connecting rod 8 and the hinge seat 13 are rotatably connected through the rotating pin 12.

[0026] In the above-described scheme, by sleeve-mounted the fixing ring 9 at the upper end of the crank connecting rod 8 on the outer wall of the rotating shaft 7, and fastening the fixing ring 9 to the rotating shaft 7 by bolts 10, it is ensured that the connection between the crank connecting rod 8 and the rotating shaft 7 is firm and reliable, and no relative movement or loosening will occur; an articulated seat 13 is fixedly installed on the explosion-proof door 2, wherein the articulated seat 13 is designed with an interface matching the rotating pin 12, and the crank connecting rod 8 is connected to the articulated seat 13 on the explosion-proof door 2 through the rotating pin 12, thereby realizing the rotational connection between the crank connecting rod 8 and the explosion-proof door 2; when the rotating shaft 7 starts to rotate under the action of external force, the fixed connecting rod 8 The crank connecting rod 8 connected to the rotating shaft 7 will rotate accordingly. Since the crank connecting rod 8 and the explosion-proof door 2 are movably connected via the rotating pin 12, the rotation of the crank connecting rod 8 will be converted into a flipping movement of the explosion-proof door 2. As the crank connecting rod 8 continues to rotate, the explosion-proof door 2 will be gradually pushed open, thereby opening a pressure relief channel; when the pressure relief is completed, the crank connecting rod 8 and the explosion-proof door 2 will automatically return to their initial positions under the action of their own weight and the counterweight block 15. During this process, the rotation of the crank connecting rod 8 and the flipping of the explosion-proof door 2 are reversible, ensuring that the explosion-proof door 2 can be accurately closed and restored to a sealed state.

[0027] Please refer to Figure 1 , Figure 2 As an embodiment of the utility model, both ends of the rotating shaft 7 respectively pass through the seat bearing 6 and extend to both sides, wherein each extended end of the rotating shaft 7 is provided with a handle 14; the handle 14 is connected to the rotating shaft 7 through a keyway, wherein a counterweight block 15 is installed on the handle 14.

[0028] In the above-described scheme, the synchronous rotation between the handle 14 and the rotating shaft 7 is ensured by the keyway connection, so that the handle 14 can accurately control the movement of the rotating shaft 7; a counterweight block 15 is also installed on the handle 14. The function of this counterweight block 15 is to provide the necessary balancing force, which can effectively help the handle 14 and the rotating shaft 7 to overcome inertia, so that the rotating shaft 7 rotates in the opposite direction, and drives the explosion-proof door 2 to rotate through the crank connecting rod 8, so that the explosion-proof door 2 gradually closes and finally returns to the initial sealing state, so as to ensure that during or after the pressure relief process, the rotating shaft 7 and the handle 14 can automatically reset without human operation.

[0029] Please refer to Figure 3 , Figure 4 As an embodiment of the utility model, the inner cavity of the explosion-proof door 2 is a grid-like structure, wherein each grid cavity is filled with silicone foam 16; the size of the explosion-proof door 2 is larger than the inner size of the door frame 1, wherein a sealing strip 17 is provided around the side of the explosion-proof door 2 close to the door frame 1, and a sealing groove 18 adapted to the sealing strip 17 is provided around the door frame 1.

[0030] In the above-described scheme, the inner cavity of the explosion-proof door 2 is designed as a grid-like structure, which greatly enhances the overall strength and stability of the door panel of the explosion-proof door 2. By filling each grid cavity with silicone foam 16, this material has good elasticity and pressure resistance, and can absorb part of the impact energy when an explosion occurs, thereby reducing damage to the explosion-proof door 2 and surrounding equipment; the size of the explosion-proof door 2 is designed to be larger than the inner size of the door frame 1 to ensure that in the closed state, the explosion-proof door 2 can completely cover the door frame 1 to form a good sealing surface, and the periphery of the explosion-proof door 2 close to the door frame 1 is equipped with sealing strips 17, which are usually made of elastic material and have good sealing performance and durability; the periphery of the door frame 1 is provided with sealing grooves 18 that are compatible with the sealing strips 17, and when the explosion-proof door 2 is closed, the sealing strips 17 will be tightly embedded in the sealing grooves 18, thereby preventing gas or impurities from penetrating through the door gap.

[0031] See also Figure 1 As an embodiment of the utility model, the door curtain 4 and the door cover 3 are both made of steel, wherein the upper end of the door curtain 4 is rotatably connected to the door cover 3 through a hinge 19.

[0032] In the above-mentioned scheme, the door curtain 4 and the door cover 3 are made of steel, which greatly improves the structural stability and service life. The upper end of the door curtain 4 is rotatably connected to the door cover 3 by a hinge 19. This connection method allows the door curtain 4 to be flexibly opened or closed when subjected to external force; under normal circumstances, the door curtain 4 is in a closed state and fits tightly on the door cover 3 to form a good sealing effect to prevent the invasion of external air and impurities; when an explosion occurs indoors, the explosion-proof door 2 will quickly flip outward and open. At this time, the door curtain 4 linked to it will also automatically open under the action of the hinge 19. The opened door curtain 4 provides an additional release channel for the pressure and shock wave generated by the explosion, thereby enhancing the overall pressure relief effect. After the pressure relief process is completed, the door curtain 4 will automatically close under the action of gravity and return to its initial sealing state.

[0033] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A flip-type self-resetting explosion-proof door, comprising a door frame (1), characterized in that: The front of the door frame (1) is provided with an explosion-proof door (2), wherein the explosion-proof door (2) is movably connected to the door frame (1); the outer side of the door frame (1) is provided with a door cover (3), wherein the side of the door cover (3) away from the door frame (1) is movably connected to a door curtain (4); two flanges (5) are symmetrically installed at the upper ends of the two side walls of the door cover (3), wherein a seat bearing (6) is installed in each flange (5); a rotating shaft (7) is installed between two adjacent seat bearings (6), wherein the rotating shaft (7) is connected to the explosion-proof door (2) via a crank connecting rod (8).

2. A flip-type self-resetting explosion-proof door according to claim 1, characterized in that: Two crank connecting rods (8) are provided, wherein the upper end of the crank connecting rod (8) is fixedly connected to the rotating shaft (7), and the lower end of the crank connecting rod (8) is movably connected to the explosion relief door (2).

3. The flip-over self-resetting explosion-proof door according to claim 2, characterized in that: The upper end of the crank connecting rod (8) is provided with a fixing ring (9), wherein the fixing ring (9) is sleeved on the outer wall of the rotating shaft (7) and fixedly connected by a bolt (10); the lower end of the crank connecting rod (8) is provided with a pin hole (11), wherein a rotating pin (12) is provided in the pin hole (11); and a hinge seat (13) is fixedly mounted on the explosion relief door (2), wherein the crank connecting rod (8) and the hinge seat (13) are rotatably connected by the rotating pin (12).

4. The flip-over self-resetting explosion-proof door according to claim 1, characterized in that: Both ends of the rotating shaft (7) respectively penetrate the seat bearing (6) and extend to both sides, wherein each extended end of the rotating shaft (7) is provided with a handle (14).

5. The flip-over self-resetting explosion-proof door according to claim 4, characterized in that: The handle (14) is connected to the rotating shaft (7) via a keyway, wherein a counterweight block (15) is installed on the handle (14).

6. The flip-over self-resetting explosion-proof door according to claim 1, characterized in that: The inner cavity of the explosion relief door (2) is a grid-like structure, wherein each grid cavity is filled with silica gel foam (16).

7. The flip-over self-resetting explosion-proof door according to claim 1, characterized in that: The size of the explosion-proof door (2) is larger than the inner size of the door frame (1), wherein a sealing strip (17) is provided around the explosion-proof door (2) on one side close to the door frame (1); and a sealing groove (18) adapted to the sealing strip (17) is provided around the door frame (1).

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