Safety interlocking explosion door

Abstract

The invention relates to the technical field of explosion-proof doors, in particular to a safety interlocking explosion-proof door which comprises a door frame connected to a wall through bolts, an explosion-proof door body is rotatably connected to one side of the interior of the door frame, a ventilation window is formed in the position, close to the upper end, of the middle of the explosion-proof door body, and a plurality of rotating plates are rotatably connected to the interior of the ventilation window; a triangular plate for limiting is fixedly connected to one side of the middle of the upper end of each rotating plate, a moving plate is arranged at the position, close to the lower end, of the middle of the front end face of the anti-explosion door body, and a plurality of first springs are fixedly connected to the middle of the end face of the side, close to the anti-explosion door body, of the moving plate at equal intervals. Compared with the prior art, the explosion-proof door ventilation structure solves the problems that in the prior art, an explosion-proof door ventilation structure cannot be closed in time when explosion happens, and when continuous explosion happens, an explosion-proof door can be accidentally opened, and potential safety hazards are caused.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof door technology, and in particular to a safety interlocking explosion-proof door. Background Technology

[0002] With the acceleration of industrialization and modernization, the safety requirements of industrial buildings, chemical facilities, and military facilities are constantly increasing. Due to the inherent characteristics of pulverized coal, explosions are highly likely to occur in pulverizing systems, seriously affecting the safe and reliable operation of equipment. Therefore, explosion-proof doors need to be installed in areas of the pulverizing system with explosion hazards to release the pressure generated by an explosion and protect the safety of personnel, equipment, or components.

[0003] In the prior art, Chinese patent document CN219299139U discloses an explosion-proof door, including a steel plate on the door. The front of the door has an inner cavity with four movable slots arranged in a rectangular array within it. The inner cavity contains an impact-absorbing structure, and the door has a ventilation structure. While the impact-absorbing structure reduces damage from the explosion's impact, allowing for normal use and extending its service life, and the ventilation structure accelerates airflow during an accident, and the air filter and activated carbon plate further facilitate escape and protect lives, this... The technology is consistent with traditional methods in that, in practical applications, when pulverized coal stored inside an explosion-proof chamber encounters an anomaly and explodes, the chemical substances inside react rapidly, releasing various toxic gases, including but not limited to carbon dioxide, hydrogen, oxygen, and potential carbon monoxide. These toxic gases also diffuse during ventilation, seriously threatening the lives of surrounding personnel and causing severe environmental pollution. Furthermore, explosions are often continuous, meaning one explosion may trigger a chain reaction, leading to multiple explosions in succession. When the explosion-proof door gradually loses its protective capability due to the impact of continuous explosions, the impact of the next explosion may exceed its remaining withstand limit, causing the door to open unexpectedly. At this point, the shockwave and toxic gases generated by the explosion will rush unimpeded into the external environment, damaging surrounding facilities and potentially causing wider safety accidents and casualties.

[0004] Furthermore, we disclose a safety interlocking explosion-proof door to meet the practical needs of existing explosion-proof door ventilation structures that cannot close in time during an explosion and that the explosion-proof door may accidentally open during a series of explosions, causing safety hazards. Summary of the Invention

[0005] In view of this, the purpose of this invention is to propose a safety interlocking explosion-proof door to solve the problems in the prior art where the ventilation structure of the explosion-proof door cannot be closed in time during an explosion and the explosion-proof door may be accidentally opened during a series of explosions, causing safety hazards.

[0006] To achieve the above objectives, the present invention provides a safety interlocking explosion-proof door, comprising a door frame bolted to a wall, an explosion-proof door body rotatably connected to one side of the door frame, a turntable rotatably connected to both ends of the middle portion of the explosion-proof door body, a fixed rod slidably connected to the middle of one end face of the explosion-proof door body, a locking rod fixedly connected to one side of one end face of the explosion-proof door body, a ventilation window provided at the upper middle portion of the explosion-proof door body, multiple rotating plates rotatably connected inside the ventilation window, a triangular plate for limiting the position fixedly connected to one side of the upper middle portion of each of the multiple rotating plates, a movable plate provided at the lower middle portion of the front end face of the explosion-proof door body, multiple first springs evenly spaced and fixedly connected to the middle portion of the side face of the movable plate near the explosion-proof door body, a fixed frame fixedly connected to the end of each of the multiple first springs away from the movable plate, and multiple... The sliding rods have one end that passes through the moving plate and is slidably connected to it. Multiple isolation blocks are evenly spaced and fixedly connected to the outer side of the upper end face of the fixed frame. One end of each isolation block is fixedly connected to the explosion-proof door body. A moving cavity is provided inside the explosion-proof door body at the lower end of one side of the fixed rod. A reinforcing rod is slidably connected inside the moving cavity. A linkage assembly is provided inside the explosion-proof door body on one side of the rotating plate and the reinforcing rod. The linkage assembly is used to control the rotation of the rotating plate and the sliding of the reinforcing rod. The linkage assembly is driven by the movement of the moving plate. An installation ring is fixedly connected to the outer side of the door frame on the side away from the moving plate. Multiple fifth springs are evenly spaced and fixedly connected to the inner side of the installation ring. A sealing gasket is fixedly connected to the end face of each fifth spring on the side away from the installation ring. A rounded corner is provided at the corner of the end face of the sealing gasket on the side away from the moving plate.

[0007] Preferably, the linkage assembly includes a connecting rod slidably connected inside the explosion-proof door body on the side away from the reinforcing rod. A plurality of teeth are fixedly and evenly spaced on one end face of the connecting rod. A pull rope is fixedly connected to the middle of the upper end face of the connecting rod. The pull rope is U-shaped and arranged inside the explosion-proof door body. The end of the pull rope away from the connecting rod passes through the middle of the explosion-proof door body, the fixing frame and the moving plate respectively and is fixedly connected.

[0008] Preferably, the linkage assembly further includes a rotating shaft fixedly connected to the middle of the rotating plate, both ends of the rotating shaft passing through the rotating plate, and a gear fixedly connected to the end of the rotating shaft near the connecting rod, the gear meshing with the tooth groove on the connecting rod.

[0009] Preferably, a limiting sleeve is fixedly connected to the end of the rotating shaft in the uppermost rotating plate that is away from the gear. A hole is provided on one side of the middle part of the limiting sleeve, and a rounded corner is provided at the connection between the hole and the outer wall of the limiting sleeve.

[0010] Preferably, a plug rod is slidably connected inside the socket, and the end of the plug rod near the limiting sleeve is also provided with a rounded corner. The other end of the plug rod passes through the explosion-proof door body and is fixedly connected to a handle. A fourth spring is fixedly connected to the outer side of the handle near the explosion-proof door body, and the end of the fourth spring away from the handle is fixedly connected to the explosion-proof door body.

[0011] Preferably, a connecting plate is fixedly connected to the lower end of the connecting rod, and a third spring is fixedly connected to both sides of the lower end face of the connecting plate. The lower ends of the two third springs are fixedly connected to the explosion-proof door body, and a limit rod is fixedly connected to the middle of the lower end face of the connecting plate.

[0012] Preferably, the reinforcing rod is fixedly connected to a connecting plate at the middle of one end face inside the explosion-proof door body, and a slot is opened on one side of the connecting plate. The slot is L-shaped, and the lower end of the limiting rod is set inside the slot.

[0013] Preferably, a fixing plate is fixedly connected to the end of the connecting plate away from the reinforcing rod, and a second spring is fixedly connected to the middle of the side face of the fixing plate away from the connecting plate. The end of the second spring away from the fixing plate is fixedly connected to the explosion-proof door body.

[0014] Preferably, a stabilizing plate is fixedly connected to the inner center of the reinforcing rod, and a pull rod is fixedly connected to the center of one end face of the stabilizing plate.

[0015] Preferably, a rectangular groove is provided at the lower end of the middle of one side end face of the explosion-proof door body, and one end of the pull rod passes through the explosion-proof door body and is slidably connected to the explosion-proof door body through the rectangular groove.

[0016] The beneficial effects of this invention are:

[0017] 1. This safety interlock explosion-proof door features a mechanism that, in the event of an accidental explosion of pulverized coal stored inside the explosion-proof chamber, the resulting massive shockwave will rapidly propel the movable plate towards the door body. As the movable plate shifts, it activates the linkage component, which in turn drives the gears to rotate efficiently. This rotation causes the rotating plate to rotate precisely. Under normal circumstances, the rotating plate remains perpendicular to the door body, ensuring unobstructed ventilation. However, after an explosion, driven by the gears, the rotating plate will precisely rotate 90 degrees, becoming horizontal with the door body, thus quickly sealing the ventilation window. This effectively prevents the leakage of toxic gases from the internal explosion, significantly reducing the threat to the lives of surrounding personnel and environmental pollution. Simultaneously, when the drive component is activated, it pushes the reinforcing rod to move rapidly until it is fully inserted into the locking lever. This design significantly enhances the explosion-proof door's resistance to blast waves and significantly reduces the risk of accidental opening due to continuous explosions. This innovative measure greatly improves the safety of the explosion-proof door, providing users with more reliable protection.

[0018] 2. This safety interlock explosion-proof door has a sealing structure on one side of the door frame. This sealing structure consists of an installation ring, a fifth spring, and a sealing gasket. During installation, since the sealing gasket is made of rubber, it first contacts the connected component. The gasket expands and contracts through the rounded corner, allowing it to slide inside the installation ring. When it passes through the connecting component and enters the slot within it, the sealing gasket expands under the action of the fifth spring, filling the space inside the slot and thus achieving a seal. This prevents toxic gases from escaping from the gap between the door frame and the connecting component in the event of an explosion, improving safety and increasing the stability of the door frame to some extent. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the front-end three-dimensional structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the rear end of the present invention;

[0022] Figure 3 This is a three-dimensional structural diagram of the movable plate and its connecting components of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the explosion-proof door body of the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the rotating plate and its connecting components of the present invention;

[0025] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0026] Figure 7 This is a schematic diagram of the internal structure of the rotating plate of the present invention;

[0027] Figure 8 This is a schematic diagram of the internal structure of the insertion rod and its connecting components of the present invention;

[0028] Figure 9 This is a schematic diagram of the internal structure of the sealing structure of the present invention.

[0029] The diagram is marked as follows:

[0030] 1. Explosion-proof door body; 2. Door frame; 3. Moving plate; 4. Handle; 5. Turning plate; 6. Reinforcing rod; 7. First spring; 8. Pull rope; 9. Second spring; 10. Connecting plate; 11. Connecting rod; 12. Connecting plate; 13. Third spring; 14. Limiting rod; 15. Fixing plate; 16. Slot; 17. Pull rod; 18. Rotating shaft; 19. Limiting sleeve; 20. Gear; 21. Insertion hole; 22. Fourth spring; 23. Insertion rod; 24. Turntable; 25. Rectangular groove; 26. Ventilation window; 27. Locking rod; 28. Fixing rod; 29. ​​Moving cavity; 30. Stabilizing plate; 31. Triangular plate; 32. Sealing gasket; 33. Mounting ring; 34. Fifth spring; 35. Slide rod; 36. Fixing bracket; 37. Isolation block. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0032] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] like Figures 1 to 9As shown, a safety interlocking explosion-proof door includes a door frame 2 bolted to a wall. An explosion-proof door body 1 is rotatably connected to one side of the door frame 2. Turntables 24 are rotatably connected to both ends of the middle section of the explosion-proof door body 1. A fixing rod 28 is slidably connected to the middle of one end face of the explosion-proof door body 1. A locking rod 27 is fixedly connected to one end face of the explosion-proof door body 1. A ventilation window 26 is opened at the upper part of the middle section of the explosion-proof door body 1. Multiple rotating plates 5 are rotatably connected inside the ventilation window 26. Triangular plates 31 for limiting movement are fixedly connected to one side of the upper middle section of each of the multiple rotating plates 5. A movable plate 3 is provided at the lower center of the front end face of the door body 1. Multiple first springs 7 are evenly spaced and fixedly connected to the middle of the side face of the movable plate 3 closest to the explosion-proof door body 1. A fixing frame 36 is fixedly connected to the end of each of the first springs 7 away from the movable plate 3. Multiple sliding rods 35 are fixedly connected to the outer side of one side face of the fixing frame 36. One end of each sliding rod 35 passes through the movable plate 3 and is slidably connected to it. Multiple isolation blocks 37 are evenly spaced and fixedly connected to the outer side of the upper face of the fixing frame 36. One end of each isolation block 37 is fixedly connected to the explosion-proof door body 1. The interior of the explosion-proof door body 1 has a movable cavity 29 located at the lower end of one side of the fixed rod 28. A reinforcing rod 6 is slidably connected inside the movable cavity 29. A linkage assembly is provided inside the explosion-proof door body 1 on one side of the rotating plate 5 and the reinforcing rod 6. The linkage assembly is used to control the rotation of the rotating plate 5 and the sliding of the reinforcing rod 6. The linkage assembly is driven by the movement of the movable plate 3. An installation ring 33 is fixedly connected to the outer side of the end face of the door frame 2 away from the movable plate 3. Multiple fifth springs 34 are fixedly connected to the inner side of the installation ring 33 at even intervals. The end face of the multiple fifth springs 34 away from the installation ring 33 is fixed. A sealing gasket 32 ​​is connected, with a rounded corner at the end face of the sealing gasket 32 ​​away from the moving plate 3. During the operation of the device, if the coal powder stored in the explosion-proof chamber encounters an accidental explosion, the resulting huge shock wave will rapidly push the moving plate 3 towards the explosion-proof door body 1. When the moving plate 3 is displaced, it will activate the linkage component, putting it into working state. The linkage component will then drive the gear 20 to rotate efficiently. This rotation will cause the rotating plate 5 to rotate precisely. Under normal circumstances, the rotating plate 5 maintains a perpendicular state with the explosion-proof door body 1, ensuring that the ventilation window 26 is unobstructed. However, after an explosion, driven by the gear 20, the rotating plate 5 will rotate accurately ninety degrees, forming a horizontal state with the explosion-proof door body 1, thereby quickly sealing the ventilation window 26. This action effectively prevents the leakage of toxic gases generated by the internal explosion, greatly reducing the threat to the lives of surrounding personnel and significantly reducing environmental pollution. At the same time, when the drive component is activated, it will push the reinforcing rod 6 to move rapidly until the reinforcing rod 6 is fully inserted into the clamp 27.This design significantly enhances the explosion-proof door body 1's ability to resist blast shock waves and significantly reduces the risk of the explosion-proof door being accidentally opened due to continuous explosions. This innovative measure greatly improves the safety of the explosion-proof door and provides users with more reliable protection.

[0034] Furthermore, such as Figures 1 to 8As shown, the linkage assembly includes a connecting rod 11 slidably connected inside the explosion-proof door body 1 on the side away from the reinforcing rod 6. Multiple evenly spaced toothed grooves are fixedly arranged on one end face of the connecting rod 11. A pull rope 8 is fixedly connected to the middle of the upper end face of the connecting rod 11. The pull rope 8 is U-shaped and arranged inside the explosion-proof door body 1. The end of the pull rope 8 away from the connecting rod 11 passes through the middle of the explosion-proof door body 1, the fixing frame 36, and the moving plate 3, respectively, and is fixedly connected. The linkage assembly also includes a rotating shaft 18 fixedly connected to the middle of the rotating plate 5. Both ends of shaft 8 pass through rotating plate 5. A gear 20 is fixedly connected to the end of shaft 18 near connecting rod 11. Gear 20 meshes with the tooth groove on connecting rod 11. A limiting sleeve 19 is fixedly connected to the end of shaft 18 away from gear 20 in the uppermost rotating plate 5. An insertion hole 21 is provided on one side of the middle of limiting sleeve 19. The connection between insertion hole 21 and the outer wall of limiting sleeve 19 is rounded. An insertion rod 23 is slidably connected inside insertion hole 21. The end of insertion rod 23 near limiting sleeve 19 is also rounded. The other end of the insertion rod 23 passes through the explosion-proof door body 1 and is fixedly connected to the handle 4. The outer side of the handle 4 near the explosion-proof door body 1 is fixedly connected to the fourth spring 22. The end of the fourth spring 22 away from the handle 4 is fixedly connected to the explosion-proof door body 1. When the coal dust inside the explosion-proof door explodes, the movement of the moving plate 3 drives the rotation of the rotating plate 5, thereby closing the ventilation window 26 to prevent the leakage of toxic gas. When the shock wave generated by the explosion pushes the moving plate 3 to move to the side of the explosion-proof door body 1, the pull rope 8 fixedly connected to the moving plate 3 is pulled, and the pull rope 8 becomes slack. The other end of the pull rope 8 is connected to the connecting rod 11. The lower end of the connecting rod 11 moves downward through the action of the third spring 13. The evenly spaced toothed grooves on the connecting rod 11 mesh with the gear 20. When the connecting rod 11 moves, it drives the gear 20 to rotate. The rotation of the gear 20 drives the rotation of the rotating shaft 18 and the rotating plate 5 connected to it. Under normal circumstances, the rotating plate 5 is perpendicular to the explosion-proof door body 1, allowing the ventilation window 26 to remain open. However, during an explosion, the rotating plate 5 will rotate 90 degrees driven by the gear 20, forming a horizontal position with the explosion-proof door body 1, thereby sealing the ventilation window 26. To ensure that the rotating plate 5 remains stable after rotation, a structure of limiting sleeve 19 and insertion rod 23 is set. When the rotating plate 5 rotates to the horizontal position, the insertion hole 21 will rotate to the front end of the insertion rod 23. Through the action of the fourth spring 22, the insertion rod 23 will be driven to insert into the insertion hole 21 of the limiting sleeve 19. Through the rounded corner design between the insertion rod 23 and the insertion hole 21, the insertion rod 23 can be easily inserted and pulled out. The insertion of the insertion rod 23 provides additional stability, preventing the rotating plate 5 from rotating accidentally under the impact of a possible subsequent explosion. At the same time, the fourth spring 22 is set between the handle 4 and the explosion-proof door body 1, so that when the rotating plate 5 does not need to be fixed, the spring force will pop the insertion rod 23 out of the insertion hole 21 for easy operation next time.

[0035] Furthermore, such as Figure 2 , Figure 4 and Figure 5 As shown, a connecting plate 12 is fixedly connected to the lower end of the connecting rod 11. Two third springs 13 are fixedly connected to both sides of the lower end face of the connecting plate 12. The lower ends of the two third springs 13 are fixedly connected to the explosion-proof door body 1. A limit rod 14 is fixedly connected to the middle of the lower end face of the connecting plate 12. A connecting plate 10 is fixedly connected to the middle of one end face of the reinforcing rod 6 inside the explosion-proof door body 1. A slot 16 is opened on one side of the connecting plate 10. The slot 16 is L-shaped, and the lower end of the limit rod 14 is located inside the slot 16. A fixing plate 15 is fixedly connected to the end of the connecting plate 10 away from the reinforcing rod 6. A fixing plate 15 is fixedly connected to the end of the fixing plate 15 away from the connecting plate 10. A second spring 9 is fixedly connected to the middle of the side end face. The end of the second spring 9 away from the fixed plate 15 is fixedly connected to the explosion-proof door body 1. A stabilizing plate 30 is fixedly connected to the inner middle of the reinforcing rod 6. A pull rod 17 is fixedly connected to the middle of one side end face of the stabilizing plate 30. A rectangular groove 25 is opened at the lower end of the middle of one side end face of the explosion-proof door body 1. One end of the pull rod 17 passes through the explosion-proof door body 1 and slides with the explosion-proof door body 1 through the rectangular groove 25. The limiting rod 14 at the lower end of the connecting plate 12 cooperates with the L-shaped slot 16 on the connecting plate 10. When the connecting rod 11 moves, the limiting rod 14 also moves downward. During normal operation... The lower end of the limiting rod 14 is engaged with the upper end of one side of the slot 16, thus limiting the connecting plate 10. When the limiting rod 14 moves downward, it cancels the limiting function of the connecting plate 10, and the connecting plate 10 slides forward under the action of the second spring 9. While sliding, the connecting plate 10 also drives the reinforcing rod 6 to slide forward in the moving cavity 29, and then inserts into the slot 27, improving the impact resistance of the explosion-proof door body 1. A stabilizing plate 30 is fixed inside the reinforcing rod 6, and a pull rod 17 is connected to the stabilizing plate 30. The pull rod 17 passes through the rectangular slot 25 on the explosion-proof door body 1 and connects to the explosion-proof door body 1. The sliding connection allows the reinforcing rod 6 to move by pulling the lever 17 when the explosion-proof door needs to be opened. In summary, this part, through the cooperation of components such as the pull rope 8, connecting rod 11, connecting plate 12, third spring 13, limiting rod 14, connecting plate 10, slot 16, fixing plate 15, second spring 9, reinforcing rod 6, stabilizing plate 30, and lever 17, enables the movement of the reinforcing rod 6 by moving the moving plate 3 during an explosion, thereby enhancing the explosion-proof door's resistance to blast waves. The design of the limiting rod 14 and slot 16 ensures the stability and reliability of the reinforcing rod 6.

[0036] Working principle: When in use, the explosion-proof door can be opened and closed by moving the fixed rod 28 through the turntables 24 on both sides of the middle of the door body. When the coal powder inside the explosion-proof door explodes, the movement of the moving plate 3 drives the rotation of the rotating plate 5, thereby closing the ventilation window 26 to prevent the leakage of toxic gas. When the shock wave generated by the explosion pushes the moving plate 3 to move to one side of the explosion-proof door body 1, the pull rope 8 fixedly connected to the moving plate 3 is pulled, and the pull rope 8 becomes slack. The other end of the pull rope 8 is connected to the connecting rod 11. The lower end of the connecting rod 11 moves downward through the action of the third spring 13. The evenly spaced toothed grooves on the connecting rod 11 mesh with the gear 20. When the connecting rod 11 moves, it drives the gear 20 to rotate. The rotation of the gear 20 drives the rotation of the rotating shaft 18 and the rotating plate 5 connected to it. Under normal circumstances, the rotating plate 5 is perpendicular to the explosion-proof door body 1, allowing the ventilation window 26 to remain open. However, during an explosion, the rotating plate 5 will rotate 90 degrees driven by the gear 20, forming a horizontal position with the explosion-proof door body 1, thereby sealing the ventilation window 26. To ensure the stability of the rotating plate 5 after rotation, a structure of a limiting sleeve 19 and a plug rod 23 is provided. When the rotating plate 5 rotates to the horizontal position, the plug hole 21 will rotate to the front end of the plug rod 23. Through the action of the fourth spring 22, the plug rod 23 will be driven to insert into the plug hole 21 of the limiting sleeve 19. The rounded corner design between the plug rod 23 and the plug hole 21 is used to ensure stability. The insertion rod 23 can be easily inserted and removed. The insertion of the insertion rod 23 provides additional stability, preventing the rotating plate 5 from rotating accidentally under possible subsequent explosive impact. At the same time, the fourth spring 22 is set between the handle 4 and the explosion-proof door body 1. When the rotating plate 5 does not need to be fixed, the spring force will eject the insertion rod 23 from the insertion hole 21, facilitating the next operation. When the connecting rod 11 moves, the limiting rod 14 also moves downward. During normal operation, the lower end of the limiting rod 14 is engaged with the upper end of one side of the slot 16. After completing the limiting action of the connecting plate 10, when the limiting rod 14 moves downward, the limiting rod 14 releases the limiting action of the connecting plate 10. The connecting plate 10 slides forward under the action of the second spring 9. While sliding, the connecting plate 10 also drives the reinforcing rod 6 to slide forward in the moving cavity 29, and then inserts into the inside of the locking rod 27, thereby improving the impact resistance of the explosion-proof door body 1. A stabilizing plate 30 is fixed inside the reinforcing rod 6. A pull rod 17 is connected to the stabilizing plate 30. The pull rod 17 passes through the rectangular groove 25 on the explosion-proof door body 1 and connects to the explosion-proof door. The door body 1 is slidably connected. When the explosion-proof door needs to be opened, the reinforcing rod 6 can be moved by pulling the pull rod 17. In summary, this part achieves the movement of the reinforcing rod 6 by moving the moving plate 3 when an explosion occurs through the cooperation of components such as the pull rope 8, connecting rod 11, connecting plate 12, third spring 13, limiting rod 14, connecting plate 10, slot 16, fixing plate 15, second spring 9, reinforcing rod 6, stabilizing plate 30 and pull rod 17. This enhances the explosion-proof door's resistance to blast shock waves.

[0037] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0038] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A safety interlocking explosion-proof door, comprising a door frame (2) bolted to a wall, wherein an explosion-proof door body (1) is rotatably connected to one side of the door frame (2), a turntable (24) is rotatably connected to both ends of the middle part of the explosion-proof door body (1), a fixing rod (28) is slidably connected to the middle part of one end face of the explosion-proof door body (1), and a locking rod (27) is fixedly connected to one end face of one side of the explosion-proof door body (1), characterized in that: The middle part of the explosion door body (1) is provided with a ventilation window (26) at the upper end, a plurality of rotating plates (5) are rotatably connected inside the ventilation window (26), the upper end of each of the plurality of rotating plates (5) is fixedly connected with a triangular plate (31) for limiting, the middle part of the front end surface of the explosion door body (1) is provided with a moving plate (3) at the lower end, a plurality of first springs (7) are fixedly connected to the middle part of the moving plate (3) on one side of the explosion door body (1), one end of each of the plurality of first springs (7) is fixedly connected with a fixing frame (36), the fixing frame (36) is fixedly connected with a plurality of slide rods (35) on the outer side of one end surface, one end of each of the plurality of slide rods (35) penetrates the moving plate (3) and is slidably connected with the moving plate (3), a plurality of isolation blocks (37) are fixedly connected to the outer side of the upper end surface of the fixing frame (36) at equal intervals, one end of each of the plurality of isolation blocks (37) is fixedly connected with the explosion door body (1), a moving cavity (29) is formed in the inside of the explosion door body (1) at the lower end of one side of the fixing rod (28), a reinforcing rod (6) is slidably connected inside the moving cavity (29), a linkage assembly is arranged inside the explosion door body (1) at one side of the rotating plate (5) and the reinforcing rod (6), the linkage assembly is used for controlling the rotating plate (5) to rotate and the reinforcing rod (6) to slide, the linkage assembly is driven by the movement of the moving plate (3), the outer side of one end surface of the door frame (2) away from the moving plate (3) is fixedly connected with a mounting ring (33), the inner side of the mounting ring (33) is fixedly connected with a plurality of fifth springs (34) at equal intervals, one end surface of each of the plurality of fifth springs (34) away from the mounting ring (33) is fixedly connected with a sealing gasket (32), a round corner is formed at the corner of one end surface of the sealing gasket (32) away from the moving plate (3).

2. A safety interlocked explosion door according to claim 1, wherein: The linkage assembly comprises a connecting rod (11) slidably connected inside the explosion door body (1) away from the reinforcing rod (6), a plurality of tooth grooves are fixedly and evenly arranged on one end surface of the connecting rod (11), a pull rope (8) is fixedly connected to the middle part of the upper end surface of the connecting rod (11), the pull rope (8) is arranged in the form of U in the inside of the explosion door body (1), one end of the pull rope (8) away from the connecting rod (11) penetrates the middle part of the explosion door body (1), the fixing frame (36) and the moving plate (3) and is fixedly connected.

3. A safety interlocked explosion door according to claim 2, wherein: The linkage assembly further comprises a rotating shaft (18) fixedly connected to the middle part of the rotating plate (5), both ends of the rotating shaft (18) penetrate the rotating plate (5), one end of the rotating shaft (18) close to the connecting rod (11) is fixedly connected with a gear (20), the gear (20) is meshingly connected with the tooth grooves on the connecting rod (11).

4. A safety interlocked explosion door according to claim 3, wherein: One end of the rotating shaft (18) away from the gear (20) in the rotating plate (5) at the uppermost end is fixedly connected with a limiting sleeve (19), a insertion hole (21) is formed in the middle part of one side of the limiting sleeve (19), a round corner is formed at the connection between the insertion hole (21) and the outer wall of the limiting sleeve (19).

5. A safety interlocked explosion door according to claim 4, wherein: The inside of the jack (21) is slidably connected with a plug rod (23), one end of the plug rod (23) is also provided with a round corner near the limiting sleeve (19), the other end of the plug rod (23) penetrates the explosion door body (1) and is fixedly connected with a handle (4), one side end surface outside of the handle (4) is fixedly connected with a fourth spring (22), one end of the fourth spring (22) away from the handle (4) is fixedly connected with the explosion door body (1).

6. A safety interlocked explosion door according to claim 2, wherein: The lower end of the connecting rod (11) is fixedly connected with a connecting plate (12), both sides of the lower end surface of the connecting plate (12) are fixedly connected with third springs (13), the lower ends of the two third springs (13) are fixedly connected with the explosion door body (1), and the lower end surface of the connecting plate (12) is fixedly connected with a limiting rod (14) in the middle.

7. A safety interlocked explosion door according to claim 6, wherein: The reinforcing rod (6) is fixedly connected with a connecting plate (10) in the middle of one side end surface inside the explosion door body (1), one side of the connecting plate (10) is provided with a clamping groove (16), the clamping groove (16) is L-shaped, and the lower end of the limiting rod (14) is arranged in the inside of the clamping groove (16).

8. A safety interlocked explosion door according to claim 7, characterised in that: One end of the connecting plate (10) away from the reinforcing rod (6) is fixedly connected with a fixed plate (15), the middle of one side end surface of the fixed plate (15) away from the connecting plate (10) is fixedly connected with a second spring (9), and one end of the second spring (9) away from the fixed plate (15) is fixedly connected with the explosion door body (1).

9. A safety interlocked explosion door according to claim 8, wherein: The middle of the inside of the reinforcing rod (6) is fixedly connected with a stabilizing plate (30), and one side end surface of the stabilizing plate (30) is fixedly connected with a pull rod (17).

10. A safety interlocked explosion door according to claim 9, wherein: The middle of one side end surface of the explosion door body (1) is provided with a rectangular groove (25) below the lower end, one end of the pull rod (17) penetrates the explosion door body (1) and is slidably connected with the explosion door body (1) through the rectangular groove (25).

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