An explosion-proof suspended plate flap valve

Abstract

The present application relates to an explosion-proof hanging plate flap, belonging to the technical field of explosion-proof doors. It includes an explosion-proof door and a push plate. The explosion-proof door is provided with a ventilation opening. A sliding rod is connected to the push plate, and the sliding rod is slidably connected inside the explosion-proof door. The push plate is located on the outer side of the explosion-proof door, and there is a space reserved between the push plate and the explosion-proof door. A hanging plate is slidably arranged on the inner side of the explosion-proof door, and the hanging plate is located above the ventilation opening. The sliding rod is connected with a lifting component for controlling the lifting of the hanging plate, and the bottom of the push plate covers the ventilation opening. The present application has the effects of reducing the deformation of the hanging plate flap caused by impact and facilitating the easy opening of the hanging plate flap after closing.

Description

Technical Field

[0001] The present application relates to the technical field of explosion-proof doors, and more particularly to a hanging plate flap valve with explosion-proof function. Background Art

[0002] The explosion-proof flap valve is a protective air defense ventilation device used in civil air defense projects to ensure continuous ventilation inside the project in the event of an air raid. It is generally used in combination with a diffusion chamber and is divided into two types: pendulum type and rubber tube type according to different materials. The main body is made of steel structure and will automatically close instantly when subjected to an explosion shock wave to protect the ventilation equipment inside the project from being damaged. For a general pendulum type explosion-proof flap valve, a hanging plate is provided outside the ventilation opening. After the hanging plate is subjected to the shock wave, it will cover the ventilation opening to form a sealed space.

[0003] In view of the above related technologies, for the explosion-proof hanging plate flap valves currently on the market, after the hanging plate closes under the action of the shock wave, the structure of the hanging plate itself and the impact it receives make the hanging plate prone to damage, resulting in the hanging plate getting stuck inside the ventilation opening and making it very difficult to easily open the hanging plate flap valve again. Summary of the Invention

[0004] In order to reduce the deformation of the hanging plate flap valve caused by impact and facilitate the easy opening of the hanging plate flap valve after closing, the present application provides an explosion-proof hanging plate flap valve.

[0005] The explosion-proof hanging plate flap valve provided by the present application adopts the following technical solutions:

[0006] An explosion-proof hanging plate flap valve includes an explosion-proof door and a push plate. The explosion-proof door is provided with a ventilation opening. A sliding rod is connected to the push plate, and the sliding rod is slidably connected inside the explosion-proof door. The push plate is located on the outer side of the explosion-proof door, and a space is reserved between the push plate and the explosion-proof door. A hanging plate is slidably arranged on the inner side of the explosion-proof door, and the hanging plate is located above the ventilation opening. The sliding rod is connected with a lifting component for controlling the lifting of the hanging plate.

[0007] By adopting the above technical solutions, when being impacted, the impact force will push the explosion-proof door, causing the push plate to move closer to the explosion-proof door. The push plate drives the sliding rod to slide, and the sliding rod drives the lifting component to control the hanging plate to descend to close the ventilation opening.

[0008] When the push plate is impacted, the outer side of the explosion-proof door supports the push plate, which can reduce the situation where the push plate is deformed and cannot slide normally. At the same time, the bottom of the push plate covers the ventilation opening. When there is a space between the push plate and the explosion-proof door, the ventilation opening ventilates normally. When the push plate is impacted, before the hanging plate is completely closed, the push plate can resist a large amount of dust brought by the impact from passing through the ventilation opening. And the hanging plate is arranged on the inner side of the explosion-proof door. The push plate resists the shock wave, the hanging plate will not be deformed and the push plate is not easily deformed either. Thus, after the explosion-proof door is impacted, the hanging plate can be used normally and opened easily.

[0009] Optionally, at least two suspension plates are provided, and ventilation openings, lifting assemblies and push plates corresponding to the number of the suspension plates are provided on the explosion-proof door.

[0010] By adopting the above technical solution, the arrangement of multiple ventilation openings improves the ventilation efficiency of the explosion-proof door during normal use.

[0011] Optionally, the lifting assembly includes a guide wheel and a first towing rope. The guide wheel is located on the inner side of the explosion-proof door. One end of the first towing rope is connected to the sliding rod, and the other end of the first towing rope is connected to the suspension plate. The first towing rope bypasses the guide wheel.

[0012] By adopting the above technical solution, during normal use, the first towing rope pulls the suspension plate. When the push plate is impacted and approaches the explosion-proof door, the sliding rod moves towards the inner side of the explosion-proof door. At this time, the first towing rope is in a slack state, and the suspension plate freely falls and blocks the ventilation opening, thereby realizing the closing of the ventilation opening. After the impact ends, the push plate is reset, and the sliding rod pulls the suspension plate up again to open the ventilation opening.

[0013] Optionally, a rotating seat is provided on the inner side of the explosion-proof door. A turning rod is rotatably connected to the rotating seat. The turning rod is connected with a push rod. One end of the push rod away from the turning rod is hinged to the suspension plate. The first towing rope is connected to the turning rod.

[0014] By adopting the above technical solution, when the suspension plate slides downward under the action of gravity, the push rod and the turning rod enable the suspension plate to stably move along the explosion-proof door to seal the ventilation opening, avoiding the suspension plate from shaking when falling, and at the same time enabling the suspension plate to be more stably connected to the explosion-proof door. And the push rod can be set to be inclined towards the explosion-proof door, so that the thickness of the suspension plate can be reduced and materials can be saved.

[0015] Optionally, a reset assembly for resetting the push plate after impact is provided on the explosion-proof door.

[0016] Optionally, the reset assembly includes a first runner, a second runner and a second towing rope. The first runner and the second runner are both rotatably provided inside the explosion-proof door. The second towing rope is wound around the first runner and the second runner. The first runner is connected with a rotating rod. One end of the rotating rod extends out of the outer side of the explosion-proof door. The rotating rod is connected with a turntable. A rotating sleeve is provided on the second runner. The rotating sleeve is threadedly connected with a telescopic rod. The telescopic rod is slidably connected with the explosion-proof door. The telescopic rod faces the push plate.

[0017] By adopting the above technical solution, when resetting the push plate, rotate the rotating rod. The rotating rod drives the turntable to rotate, the turntable drives the first runner to rotate, the first runner drives the second traction rope to rotate, the second traction rope drives the second runner to rotate, the second runner drives the rotating sleeve to rotate, the rotating sleeve pushes out the telescopic rod from the explosion-proof door, and the telescopic rod pushes against the push plate to reset the push plate. After the push plate is reset, reverse the rotating rod to retract the telescopic rod into the explosion-proof door.

[0018] Optionally, a plurality of rollers are rotatably arranged in the explosion-proof door, and the sliding rod is supported on the rollers.

[0019] By adopting the above technical solution, the friction when the sliding rod moves in the explosion-proof door is reduced, and the movement of the push plate is made smoother.

[0020] Optionally, a limiting groove is formed at the top of the sliding rod, a limiting block is slidably arranged in the explosion-proof door, the limiting block is adapted to the limiting groove, and an adjusting member for adjusting the limiting block to disengage from the limiting groove is arranged in the explosion-proof door.

[0021] By adopting the above technical solution, when the push plate is impacted and approaches the explosion-proof door, the sliding rod moves towards the inner side close to the explosion-proof door. When the push plate is against the explosion-proof door, the limiting groove just aligns with the limiting block, and the limiting block freely falls and is stuck in the limiting groove, thereby restricting the situation that the push plate rebounds after the impact and causes the suspension plate to not fully close. After the impact ends, adjust the adjusting member to separate the limiting block from the limiting groove.

[0022] Optionally, the adjusting member includes an adjusting rod and a first connecting rod. The first connecting rod is arranged on the adjusting rod. The limiting block is connected to the first connecting rod. The adjusting rod and the first connecting rod are both slidably arranged in the explosion-proof door, and a lifting rod is arranged on the adjusting rod.

[0023] By adopting the above technical solution, manually lift the lifting rod. The lifting rod drives the first connecting rod to move upward, and the first connecting rod drives the limiting block to move upward, so as to realize the separation of the limiting block from the limiting groove.

[0024] Optionally, a second connecting rod is connected to the adjusting rod. The second connecting rod faces the outer side of the explosion-proof door. The second connecting rod is connected to a rotating rod. The rotating rod is located on the outer side of the explosion-proof door. The lifting rod is rotatably connected to the rotating rod. A supporting groove for supporting the lifting rod is formed on the outer side of the explosion-proof door.

[0025] By adopting the above technical solution, manually lifting the lifting rod, the lifting rod drives the rotating rod to move upward, the rotating rod drives the second connecting rod and the adjusting rod to move upward, the adjusting rod drives the first connecting rod to move upward, so as to realize that the first connecting rod drives the limiting block to disengage from the limiting groove, and then rotate the rotating rod to transfer the lifting rod into the support groove, so that the limiting block can always maintain the lifting state. After the staff rotates the turntable to reset the push plate, then transfer the lifting rod out of the support groove, which is convenient for a single staff member to perform the operation of resetting the push plate.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When impacted, the impact force will push the push plate towards the explosion-proof door. The push plate drives the sliding rod to slide, and the sliding rod drives the lifting assembly to control the suspension plate to descend and close the ventilation opening.

[0028] When the push plate is impacted, the outer side of the explosion-proof door supports the push plate, which can reduce the situation that the push plate is deformed and cannot slide normally. At the same time, the bottom of the push plate covers the ventilation opening. When there is a space between the push plate and the explosion-proof door, the ventilation opening ventilates normally. When the push plate is impacted, before the suspension plate is completely closed, the push plate can resist a large amount of dust brought by the impact from passing through the ventilation opening. And the suspension plate is arranged on the inner side of the explosion-proof door. The push plate resists the shock wave, the suspension plate will not be deformed and the push plate is not easy to be deformed either. So after the explosion-proof door is impacted, the suspension plate can be used normally and can be easily opened;

[0029] 2. Manually lift the lifting rod, the lifting rod drives the rotating rod to move upward, the rotating rod drives the second connecting rod and the adjusting rod to move upward, the adjusting rod drives the first connecting rod to move upward, so as to realize that the first connecting rod drives the limiting block to disengage from the limiting groove, and then rotate the rotating rod to transfer the lifting rod into the support groove, so that the limiting block can always maintain the lifting state. After the staff rotates the turntable to reset the push plate, then transfer the lifting rod out of the support groove, which is convenient for a single staff member to perform the operation of resetting the push plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0031] Figure 2 is the structural schematic diagram of the embodiment of the present application for showing the suspension plate.

[0032] Figure 3 is the structural schematic diagram of the embodiment of the present application for showing the roller.

[0033] Figure 4 is the structural schematic diagram of the embodiment of the present application for showing the adjusting member and the reset assembly.

[0034] Figure 5 is Figure 4 the enlarged schematic diagram of part A in

[0035] Description of reference numerals: 1. Explosion-proof door; 11. Ventilation opening; 12. Roller; 13. Bracket; 2. Push plate; 21. Slide bar; 22. Limit groove; 23. Limit block; 3. Hanging plate; 4. Lifting assembly; 41. Guide wheel; 42. First towing rope; 43. Rotating seat; 44. Flipping rod; 45. Push rod; 5. Reset assembly; 51. First rotating wheel; 52. Second towing rope; 53. Second rotating wheel; 54. Rotating sleeve; 55. Telescopic rod; 56. Rotating rod; 57. Turntable; 6. Adjusting member; 61. Adjusting rod; 62. First connecting rod; 63. Second connecting rod; 64. Rotating rod; 65. Pulling rod. Detailed implementation manners

[0036] The following further describes the present application in detail Figures 1-5 in conjunction with the attached drawings.

[0037] An embodiment of the present application discloses an explosion-proof hanging plate valve.

[0038] As Figure 1 , Figure 2 and Figure 3 shown, the explosion-proof hanging plate valve includes an explosion-proof door 1. Three ventilation openings 11 are equidistantly arranged along the height direction of the explosion-proof door 1. A plurality of slide bars 21 are slidably arranged in the explosion-proof door 1. The ventilation openings 11 correspond to the slide bars 21 one by one. The slide bars 21 are U-shaped rods. A plurality of rollers 12 are rotatably arranged in the explosion-proof door 1. The slide bars 21 are supported on the rollers 12. The slide bars 21 are connected with a push plate 2. The push plate 2 is located on the outer side of the explosion-proof door 1. A space is left between the push plate 2 and the explosion-proof door 1. The bottom of the push plate 2 covers the corresponding ventilation opening 11. A hanging plate 3 is slidably arranged on the inner side of the explosion-proof door 1. A lifting assembly 4 for controlling the lifting of the hanging plate 3 is arranged on the slide bar 21. A reset assembly 5 for resetting the push plate 2 after impact is arranged on the explosion-proof door 1.

[0039] As Figure 3 and Figure 4 shown, a limit groove 22 is formed in the top surface of the slide bar 21. A limit block 23 adapted to the limit groove 22 is slidably arranged on the explosion-proof door 1. In the normal state, the limit block 23 is supported on the top of the slide bar 21. When the push plate 2 is attached to the explosion-proof door 1, the limit block 23 is located in the limit groove 22. An adjusting member 6 for adjusting the limit block 23 to disengage from the limit groove 22 is arranged in the explosion-proof door 1.

[0040] When the explosion-proof door 1 is impacted, the impact force will push the explosion-proof door 1, causing the push plate 2 to move closer to the explosion-proof door 1. The push plate 2 drives the sliding rod 21 to slide, and the sliding rod 21 drives the lifting component 4 to control the suspension plate 3 to descend and close the ventilation opening 11. When the push plate 2 approaches the explosion-proof door 1, the sliding rod 21 moves towards the inner side of the explosion-proof door 1. When the push plate 2 is in contact with the explosion-proof door 1, the limiting groove 22 is just aligned with the limiting block 23, and the limiting block 23 freely falls into the limiting groove 22, thereby preventing the situation where the push plate 2 rebounds after the impact and causes the suspension plate 3 to not fully close. When the impact ends, the adjusting part 6 is adjusted to separate the limiting block 23 from the limiting groove 22, and then the push plate 2 is reset through the reset component 5.

[0041] When the push plate 2 is impacted, the outer side of the explosion-proof door 1 supports the push plate 2, which can reduce the deformation of the push plate 2 and prevent abnormal sliding. At the same time, the bottom of the push plate 2 covers the ventilation opening 11. When there is a space between the push plate 2 and the explosion-proof door 1, the ventilation opening 11 ventilates normally. When the push plate 2 is impacted, before the suspension plate 3 is fully closed, the push plate 2 can resist a large amount of dust brought by the impact from passing through the ventilation opening 11. And the suspension plate 3 is arranged on the inner side of the explosion-proof door 1. The push plate 2 resists the shock wave, the suspension plate 3 will not be deformed and the push plate 2 is not easily deformed either. Therefore, after the explosion-proof door 1 is impacted, the suspension plate 3 can be used normally and opened easily.

[0042] Such as Figure 3 、 Figure 4 and Figure 5 As shown in

[0043] During normal use, the first traction rope 42 pulls the suspension plate 3. When the push plate 2 is impacted and approaches the explosion-proof door 1, the sliding rod 21 moves towards the inner side of the explosion-proof door 1. At this time, the first traction rope 42 is in a slack state, and the suspension plate 3 slides downward under the action of gravity. The suspension plate 3 pulls the push rod 45 to drive the turning rod 44 to turn. The push rod 45 and the turning rod 44 enable the suspension plate 3 to stably move along the explosion-proof door 1 to close the ventilation opening 11, preventing the suspension plate 3 from shaking when falling, and at the same time making the suspension plate 3 more stably connected to the explosion-proof door 1. And the push rod 45 can be set to be inclined towards the explosion-proof door 1, so as to reduce the thickness of the suspension plate 3 and save materials.

[0044] When the push plate 2 is reset, the sliding rod 21 pulls the first traction rope 42, the first traction rope 42 drives the flipping rod 44 to flip, the flipping rod 44 adjusts the push rod 45 to reset, and the push rod 45 lifts the hanging plate 3 so that the ventilation opening 11 is opened again.

[0045] As Figure 4 and Figure 5 , the reset assembly 5 includes a first runner 51, a second traction rope 52 and three second runners 53. The first runner 51 and the three second runners 53 are all rotatably arranged in the explosion-proof door 1. The second traction rope 52 is wound around the first runner 51 and the three second runners 53. The second runners 53 correspond to the push plates 2 one by one. A rotating sleeve 54 is arranged on the second runner 53. An expansion rod 55 is threadedly connected inside the rotating sleeve 54. The expansion rod 55 is slidably connected to the explosion-proof door 1. The end face of the expansion rod 55 away from the rotating sleeve 54 faces the push plate 2. The first runner 51 is connected with a rotating rod 56. One end of the rotating rod 56 away from the first runner 51 extends out from the outer side of the explosion-proof door 1. A turntable 57 is connected to the end of the rotating rod 56 extending out of the explosion-proof door 1.

[0046] As Figure 1 , Figure 4 and Figure 5 , the adjusting member 6 includes an adjusting rod 61. The adjusting rod 61 is slidably arranged in the explosion-proof door 1. The adjusting rod 61 is connected with three first connecting rods 62. The first connecting rods 62 correspond to the limiting blocks 23 one by one. The first connecting rods 62 are connected with the corresponding limiting blocks 23. The first connecting rods 62 are perpendicular to the adjusting rod 61. The first connecting rods 62 are perpendicular to the limiting blocks 23. The adjusting rod 61 is connected with three second connecting rods 63. The three second connecting rods 63 are jointly connected with a rotating rod 64. The rotating rod 64 is located on the outer side of the explosion-proof door 1. A lifting pull rod 65 is rotatably connected to the rotating rod 64. The lifting pull rod 65 extends out of the explosion-proof door 1. A support groove 13 for supporting the lifting pull rod 65 is formed in the explosion-proof door 1.

[0047] When resetting the push plate 2, manually lift the lifting rod 65 upwards. The lifting rod 65 drives the rotating rod 64 to move upwards. The rotating rod 64 drives the second connecting rod 63 and the adjusting rod 61 to move upwards. The adjusting rod 61 drives the first connecting rod 62 to move upwards, so as to realize that the first connecting rod 62 drives the limiting block 23 to disengage from the limiting groove 22. Then rotate the lifting rod 65 and turn the lifting rod 65 into the support groove 13, so that the limiting block 23 can always maintain the lifting state. Subsequently, the staff rotates the rotating rod 56. The rotating rod 56 drives the turntable 57 to rotate. The turntable 57 drives the first runner 51 to rotate. The first runner 51 drives the second traction rope 52 to rotate. The second traction rope 52 drives the second runner 53 to rotate. The second runner 53 drives the rotating sleeve 54 to rotate. The rotating sleeve 54 pushes out the telescopic rod 55 from the explosion-proof door 1. The telescopic rod 55 presses against the push plate 2 to reset the push plate 2. After the push plate 2 is reset, reverse the turntable 57 to retract the telescopic rod 55 into the explosion-proof door 1. Finally, disengage the lifting rod 65 from the support groove 13, thus completing the reset of the push plate 2 and the hanging plate 3.

[0048] The implementation principle of the embodiment of the present application is: when being impacted, the impact force will push the push plate 2 towards the explosion-proof door 1. The push plate 2 drives the sliding rod 21 to slide. The first traction rope 42 is in a slack state. The hanging plate 3 closes the ventilation opening 11 under the action of gravity.

[0049] When the push plate 2 is impacted, the outer side of the explosion-proof door 1 supports the push plate 2, so that the situation that the push plate 2 is deformed and cannot slide normally can be reduced. At the same time, the bottom of the push plate 2 covers the ventilation opening 11. When there is a space between the push plate 2 and the explosion-proof door 1, the ventilation opening 11 ventilates normally. When the push plate 2 is impacted, before the hanging plate 3 is completely closed, the push plate 2 can resist a large amount of dust brought by the impact from passing through the ventilation opening 11. And the hanging plate 3 is arranged on the inner side of the explosion-proof door 1. The push plate 2 resists the shock wave. The hanging plate 3 will not be deformed and the push plate 2 is not easily deformed either. Thus, after the explosion-proof door 1 is impacted, the hanging plate 3 can be used normally and opened easily.

[0050] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An explosion-proof hanging plate flap valve, characterized in that: It includes an explosion-proof door (1) and a push plate (2). The explosion-proof door (1) is provided with a ventilation opening (11). A sliding rod (21) is connected to the push plate (2). The sliding rod (21) is slidably connected inside the explosion-proof door (1). The push plate (2) is located on the outer side of the explosion-proof door (1). A space is reserved between the push plate (2) and the explosion-proof door (1). A hanging plate (3) is slidably arranged on the inner side of the explosion-proof door (1). The hanging plate (3) is located above the ventilation opening (11). The sliding rod (21) is connected with a lifting component (4) for controlling the lifting of the hanging plate (3). The bottom of the push plate (2) covers the ventilation opening (11). The sliding rod (21) is a U-shaped rod; There are at least two hanging plates (3). The explosion-proof door (1) is provided with the ventilation openings (11), the lifting components (4) and the push plates (2) corresponding to the number of the hanging plates (3); The lifting component (4) includes a guide wheel (41) and a first traction rope (42). The guide wheel (41) is located on the inner side of the explosion-proof door (1). One end of the first traction rope (42) is connected to the sliding rod (21), and the other end of the first traction rope (42) is connected to the hanging plate (3). The first traction rope (42) bypasses the guide wheel (41); A rotating seat (43) is arranged on the inner side of the explosion-proof door (1). A turning rod (44) is rotatably connected to the rotating seat (43). The turning rod (44) is connected with a push rod (45). One end of the push rod (45) away from the turning rod (44) is hinged to the hanging plate (3). The first traction rope (42) is connected to the turning rod (44); A reset component (5) for resetting the push plate (2) after impact is arranged on the explosion-proof door (1); The reset component (5) includes a first runner (51), a second runner (53) and a second traction rope (52). The first runner (51) and the second runner (53) are both rotatably arranged inside the explosion-proof door (1). The second traction rope (52) is wound around the first runner (51) and the second runner (53). The first runner (51) is connected with a rotating rod (56). One end of the rotating rod (56) extends out of the outer side of the explosion-proof door (1). The rotating rod (56) is connected with a turntable (57). A rotating sleeve (54) is arranged on the second runner (53). The rotating sleeve (54) is threadedly connected with a telescopic rod (55). The telescopic rod (55) is slidably connected with the explosion-proof door (1). The telescopic rod (55) faces the push plate (2); A plurality of rollers (12) are rotatably arranged inside the explosion-proof door (1). The sliding rod (21) is supported on the rollers (12); A limiting groove (22) is provided at the top of the slide rod (21), a limiting block (23) is slidingly provided in the explosion-proof door (1), the limiting block (23) is adapted to the limiting groove (22), and an adjusting member (6) is provided in the explosion-proof door (1) for adjusting the limiting block (23) to be separated from the limiting groove (22).

2. The blast-proof hanging plate valve according to claim 1, characterized in that: The adjusting member (6) comprises an adjusting rod (61) and a first connecting rod (62), wherein the first connecting rod (62) is arranged on the adjusting rod (61), the limiting block (23) is connected to the first connecting rod (62), the adjusting rod (61) and the first connecting rod (62) are both slidably arranged in the explosion-proof door (1), and a lifting rod (65) is arranged on the adjusting rod (61).

3. The blast-proof flap valve according to claim 2, characterized in that: The adjusting rod (61) is connected to a second connecting rod (63), the second connecting rod (63) is facing the outward side of the explosion-proof door (1), the second connecting rod (63) is connected to a rotating rod (64), the rotating rod (64) is located on the outward side of the explosion-proof door (1), the lifting rod (65) is rotatably connected to the rotating rod (64), and a bracket (13) for supporting the lifting rod (65) is provided on the outward side of the explosion-proof door (1).

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