Civil air defense door sealing structure

Abstract

The utility model relates to the technical field of civil air defense doors, in particular to a civil air defense door sealing structure which comprises a door frame body, a first door plate and a second door plate are arranged on the inner side of the door frame body, a first positioning groove is formed in the surface of the door frame body, a second positioning groove is formed in the rear side of the first positioning groove, and a third positioning groove is formed in the rear side of the second positioning groove. A sealing structure is arranged between the first door plate and the first positioning groove and comprises a first sealing groove, a first sealing strip, a second sealing strip and a second sealing groove, supporting columns are fixedly connected to the left side and the right side of the door frame body, a supporting mechanism is arranged between the two supporting columns, and the supporting mechanism comprises a supporting rod, a supporting plate and a threaded rod; according to the civil air defense door, the sealing strip is clamped in the sealing groove, then the threaded rod is rotated towards the rear side, the first door plate is extruded, the sealing strip and the sealing groove are tightly attached, and then the sealing performance of the civil air defense door is effectively kept.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense doors, in particular to a sealing structure for civil air defense doors. Background Art

[0002] Civil defense doors are the doors at the entrance and exit of civil defense projects and are civil defense protection equipment. Civil defense doors are clearly classified and there are many types. The most common is the single-leaf civil defense door, which has a simple structure and a small size and is suitable for places with a small area. As an important line of defense to protect people's lives and property, civil defense doors play a huge role in production and life.

[0003] Among them, announcement number CN211448378U discloses a sealing structure for a civil air defense door, which relates to the technical field of civil air defense doors, and is designed to solve the problem that the existing civil air defense doors have poor sealing performance and cannot isolate poisonous gases well after being closed. A door frame is installed inside the wall, and the door frame is fixedly connected to the wall. A step groove is provided inside one end of the door frame, and a through groove is provided behind the step groove. A receiving groove is provided inside the door frame, and the receiving groove is located at the rear end of the step groove. There are several receiving grooves, and the several receiving grooves are distributed in sequence. A first limiting plate is installed inside the receiving groove, and a through hole is provided inside the first limiting plate. A sealing mechanism is installed inside the step groove. A protective door is installed on one side in front of the door frame, and the protective door is connected to the wall by a hinge. The protective door includes a first door body and a second door body, and a sealing strip is installed on the outside of the second door body.

[0004] The civil air defense door pushes the rubber pad outward through the pressure spring, so that the rubber pad and the first door body fit more closely. However, during long-term use, the protective door continuously squeezes the rubber pad and the pressure spring, resulting in the rubber pad and the pressure spring being unable to fully recover after transitional deformation, thereby causing the tension of the pressure spring to decrease, making it impossible for the rubber pad to fully fit against the first door body, thereby reducing the sealing effect.

[0005] Therefore, it is necessary to invent a sealing structure for a civil air defense door to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a sealing structure for a civil air defense door to solve the problem that the protective door in the technology continuously squeezes the rubber pad and the pressure spring, resulting in the rubber pad and the pressure spring being unable to fully recover after transitional deformation, thereby causing the tension of the pressure spring to decrease, making it impossible for the rubber pad to fully fit with the first door body, thereby reducing the sealing effect.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a civil defense door sealing structure, including a door frame body, a first door panel and a second door panel are arranged on the inner side of the door frame body, a first positioning groove is opened on the surface of the door frame body, a second positioning groove is opened on the rear side of the first positioning groove, and a third positioning groove is opened on the rear side of the second positioning groove, a sealing structure is arranged between the first door panel and the first positioning groove, the sealing structure includes a first sealing groove, a first sealing strip, a second sealing strip and a second sealing groove, support columns are fixedly connected to the left and right sides of the door frame body, a support mechanism is arranged between the two groups of support columns, and the support mechanism includes a support rod, a support plate and a threaded rod.

[0008] By adopting the above technical solution, the first sealing strip is clamped inside the second sealing groove, and the second sealing strip is clamped inside the first sealing groove to seal the door panel and the door frame. Then the threaded rod is rotated toward the rear side inside the support plate so that it pushes the door panel toward the rear side, thereby squeezing the first sealing strip and the second sealing strip. The sealing strip is in close contact with the inner wall of the sealing groove, thereby effectively improving the sealing structure of the civil defense door.

[0009] Optionally, the first sealing groove is opened on the rear surface of the first positioning groove near the outer side, the first sealing strip is fixedly connected to the rear surface of the first positioning groove at a position located inside the first sealing groove, the second sealing strip is fixedly connected to the rear surface of the first door panel near the outer side, the second sealing groove is opened on the rear surface of the first door panel at a position located inside the second sealing strip, the first sealing strip is stuck inside the second sealing groove, and the second sealing strip is stuck inside the first sealing groove.

[0010] By adopting the above technical solution, the thickness of the first sealing strip and the second sealing strip is greater than the depth of the first positioning groove and the second positioning groove. After the first door panel and the second door panel are closed, the first sealing strip is stuck inside the second sealing groove, and the second sealing strip is stuck inside the first sealing groove. In the process of pushing the first door panel and the second door panel backward, the first sealing strip and the second sealing strip will be squeezed, causing the first sealing strip and the second sealing strip to deform, and then fit tightly with the first sealing groove and the second sealing groove.

[0011] Optionally, the second door panel is fixedly connected to the rear surface of the first door panel, a sealing ring is fixedly connected to the outer surface of the second door panel, the first door panel is clamped on the inner side of the first positioning groove, the second door panel is clamped on the inner side of the third positioning groove, and the sealing ring is clamped on the inner side of the second positioning groove.

[0012] By adopting the above technical solution, the sealing ring is clamped inside the second positioning groove and is located between the second positioning groove and the second door panel to perform secondary sealing.

[0013] Optionally, three groups of positioning plates are fixedly connected to the left and right sides of the first door panel, the left end of the left positioning plate is fixedly connected to a positioning rod, the surfaces of the left and right groups of support columns are respectively provided with three groups of first limiting grooves and three groups of second limiting grooves, and the inner wall of the first limiting groove is provided with a clamping groove.

[0014] Optionally, the three groups of positioning plates on the left are respectively slidably connected to the three groups of first limiting grooves, the positioning rods are clamped inside the clamping grooves, and the three groups of positioning plates on the right are respectively slidably connected to the three groups of second limiting grooves.

[0015] By adopting the above technical solution, the positioning plate slides back and forth inside the first limiting groove and the second limiting groove, and the positions of the first door panel and the second door panel are adjusted so that the first door panel and the second door panel are stuck inside the door frame body.

[0016] Optionally, two groups of first fixed blocks are fixedly connected to the left and right sides of the front surface of the first door panel, and the inner side of the first fixed block is slidably connected to a plug-in rod, and two groups of fixing holes are opened on the inner surfaces of the two groups of support columns, and the plug-in rod is plugged into the inside of the fixing holes.

[0017] By adopting the above technical solution, the plug-in rod is inserted into the fixing hole to initially fix the first door panel and the second door panel, wherein the hole diameter of the fixing hole is larger than the diameter of the plug-in rod, so that the plug-in rod can be fine-tuned forward and backward inside the fixing hole, thereby allowing the first door panel and the second door panel to be pressed toward the rear side after closing.

[0018] Optionally, two groups of second fixed blocks are fixedly connected to the surface of the right support column, and the second fixed block is rotatably connected to the right end of the support rod. Two groups of third fixed blocks are fixedly connected to the surface of the left support column, and the left end of the support rod is stuck on the inner side of the third fixed block, and a pin is inserted into the inside of the third fixed block.

[0019] By adopting the above technical solution, a through hole is provided at the left end of the support rod. The right end of the support rod is rotated clockwise around the second fixed block, and the left end of the support rod is clamped on the inner side of the third fixed block. At this time, the pin is passed through the through hole on the surface of the support rod to lock and fix the left end of the support rod to the third fixed block.

[0020] Optionally, the support plate is fixedly connected to the middle part of the support rod, the threaded rod is threadedly connected to the middle part of the support plate, the front end of the threaded rod is fixedly connected to a handwheel, the middle position of the front surface of the first door panel is fixedly connected to an abutment block, and the rear end of the threaded rod is tightly abutted against the surface of the abutment block.

[0021] By adopting the above technical solution, the hand wheel is rotated clockwise to drive the threaded rod to rotate, pushing the threaded rod backward, and the rear end of the threaded rod is tightly abutted against the abutment block. As the hand wheel continues to be rotated, the first door panel and the second door panel will be pushed backward, pressing the first sealing strip and the second sealing strip.

[0022] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0023] The utility model clamps the first door panel and the second door panel on the inner side of the door frame body, clamps the first sealing strip inside the second sealing groove, clamps the second sealing strip inside the first sealing groove, and then drives the threaded rod to rotate by turning the hand wheel clockwise, pushing the threaded rod backward, and then pushing the first door panel and the second door panel backward, compressing the first sealing strip and the second sealing strip, so that the first sealing strip and the second sealing strip are tightly fitted with the first sealing groove and the second sealing groove, thereby effectively improving the sealing performance of the civil air defense door, and solving the problem that the tension of the pressure spring is reduced, so that the rubber gasket cannot be fully fitted with the first door body, thereby reducing the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure at A;

[0027] Figure 4 This is a schematic diagram of the door frame body structure of the utility model;

[0028] Figure 5 This is a schematic diagram of the internal structure of the support column of the utility model;

[0029] Figure 6 This is a schematic diagram of the first door panel structure of the present utility model.

[0030] Description of reference numerals:

[0031] 1. Door frame body; 11. First positioning groove; 12. Second positioning groove; 13. Third positioning groove; 14. First sealing groove; 15. First sealing strip; 2. First door panel; 21. Second door panel; 22. Sealing ring; 23. Second sealing groove; 24. Second sealing strip; 25. Abutment block; 26. First fixing block; 27. Connecting rod; 28. Positioning plate; 29. ​​Positioning rod; 3. Support column; 31. First limiting groove; 32. Clamping groove; 33. Second limiting groove; 34. Second fixing block; 35. Third fixing block; 36. Support rod; 37. Latch; 38. Support plate; 39. Threaded rod; 310. Handwheel; 311. Fixing hole. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] The utility model provides Figures 1 to 3 The sealing structure of a civil air defense door shown in the figure comprises a door frame body 1, a first door panel 2 and a second door panel 21 are arranged on the inner side of the door frame body 1, a first positioning groove 11 is opened on the surface of the door frame body 1, a second positioning groove 12 is opened on the rear side of the first positioning groove 11, a third positioning groove 13 is opened on the rear side of the second positioning groove 12, a sealing structure is arranged between the first door panel 2 and the first positioning groove 11, and the sealing structure comprises a first sealing groove 14, a first sealing strip 15, a second sealing strip 24 and a second sealing groove 23, the first sealing groove 14 is opened on the rear side surface of the first positioning groove 11 close to the outer side, and the first sealing strip 15 and the rear side surface of the first positioning groove 11 are located The first sealing groove 14 is fixedly connected at a position on the inner side of the first door panel 2, the second sealing strip 24 is fixedly connected to a position near the outer side of the rear surface of the first door panel 2, the second sealing groove 23 is opened on the rear surface of the first door panel 2 at a position on the inner side of the second sealing strip 24, the first sealing strip 15 is stuck in the inside of the second sealing groove 23, the second sealing strip 24 is stuck in the inside of the first sealing groove 14, the second door panel 21 is fixedly connected to the rear surface of the first door panel 2, a sealing ring 22 is fixedly connected to the outer surface of the second door panel 21, the first door panel 2 is stuck in the inner side of the first positioning groove 11, the second door panel 21 is stuck in the inner side of the third positioning groove 13, and the sealing ring 22 is stuck in the inner side of the second positioning groove 12.

[0034] During use, the first door panel 2 is pushed to the rear side so that it is stuck inside the first positioning groove 11, and at the same time, the second door panel 21 is driven to be stuck inside the third positioning groove 13. At this time, the sealing ring 22 is stuck inside the second positioning groove 12, the first sealing strip 15 is stuck inside the second sealing groove 23, and the second sealing strip 24 is stuck inside the first sealing groove 14, so as to seal the first door panel 2, the second door panel 21 and the door frame body 1.

[0035] See also Figure 4 and Figure 6 , the left and right sides of the door frame body 1 are fixedly connected with support columns 3, the left and right sides of the first door panel 2 are fixedly connected with three groups of positioning plates 28, the left end of the left positioning plate 28 is fixedly connected with a positioning rod 29, the surfaces of the left and right groups of support columns 3 are respectively provided with three groups of first limiting grooves 31 and three groups of second limiting grooves 33, the inner wall of the first limiting groove 31 is provided with a clamping groove 32, the three groups of positioning plates 28 on the left side are respectively slidably connected with the three groups of first limiting grooves 31, the positioning rod 29 is clamped in the inside of the clamping groove 32, and the three groups of positioning plates 28 on the right side are respectively slidably connected with the three groups of second limiting grooves 33, the left and right sides of the front surface of the first door panel 2 are fixedly connected with two groups of first fixing blocks 26, the inner side of the first fixing block 26 is slidably connected with a plug-in rod 27, and the surfaces of the two groups of support columns 3 close to the inner side are provided with two groups of fixing holes 311, and the plug-in rod 27 is plugged into the inside of the fixing hole 311.

[0036] Specifically, in the initial state, the first door panel 2 is in an open state, and it rotates to the left position of the left support column 3. In the process of closing the first door panel 2, first slide the first door panel 2 and the second door panel 21 to the front side, and slide the positioning rod 29 to the front end of the card slot 32. At this time, rotate the first door panel 2 and the second door panel 21 to the right around the positioning rod 29 until the positioning plate 28 on the right side is stuck in the second limit slot 33. Next, push the first door panel 2 and the second door panel 21 backward as a whole, so that the first door panel 2 and the second door panel 21 are stuck in the door frame body 1 to complete the closing of the door panel. Then slide the plug-in rod 27 to the outside and insert it into the fixing hole 311 to fix the door panel.

[0037] See also Figure 4 and Figure 5 A supporting mechanism is arranged between the two groups of supporting columns 3, and the supporting mechanism includes a supporting rod 36, a supporting plate 38 and a threaded rod 39. Two groups of second fixing blocks 34 are fixedly connected to the surface of the right supporting column 3, and the second fixing block 34 is rotatably connected to the right end of the supporting rod 36. Two groups of third fixing blocks 35 are fixedly connected to the surface of the left supporting column 3. The left end of the supporting rod 36 is stuck in the inner side of the third fixing block 35, and a latch 37 is inserted in the inside of the third fixing block 35. The supporting plate 38 is fixedly connected to the middle part of the supporting rod 36, and the threaded rod 39 is threadedly connected to the middle part of the supporting plate 38. The front end of the threaded rod 39 is fixedly connected to the hand wheel 310, and the middle position of the front side surface of the first door panel 2 is fixedly connected to the abutment block 25, and the rear end of the threaded rod 39 is tightly abutted against the surface of the abutment block 25.

[0038] At the same time, after closing the first door panel 2 and the second door panel 21, the support rod 36 is rotated to the left around the second fixing block 34, and its left end is inserted into the inner side of the third fixing block 35. Then, the pin 37 is inserted into the third fixing block 35 and the left end of the support rod 36 to fix the support rod 36. Next, the hand wheel 310 is turned to push the threaded rod 39 backward so that the rear end of the threaded rod 39 is tightly against the surface of the abutment block 25. Then, the hand wheel 310 is continued to be turned to continue to push the threaded rod 39 backward to press the first door panel 2 and the second door panel 21, so that the first sealing strip 15 and the second sealing strip 24 are respectively tightly fitted with the corresponding first sealing groove 14 and the second sealing groove 23, thereby effectively maintaining the sealing of the civil defense door.

[0039] Working principle of the utility model: in order to make the civil air defense door maintain long-term sealing performance and improve the sealing effect of the civil air defense door, the sealing ring 22 is clamped inside the second positioning groove 12, the first sealing strip 15 is clamped inside the second sealing groove 23, and the second sealing strip 24 is clamped inside the first sealing groove 14, and then the threaded rod 39 is rotated backward to squeeze the first door panel 2, so that the first sealing strip 15 and the second sealing strip 24 are tightly fitted with the corresponding first sealing groove 14 and second sealing groove 23 respectively, thereby effectively maintaining the sealing performance of the civil air defense door.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A civil air defense door sealing structure, comprising a door frame body (1), characterized in that: A first door panel (2) and a second door panel (21) are arranged on the inner side of the door frame body (1); a first positioning groove (11) is provided on the surface of the door frame body (1); a second positioning groove (12) is provided on the rear side of the first positioning groove (11); a third positioning groove (13) is provided on the rear side of the second positioning groove (12); a sealing structure is provided between the first door panel (2) and the first positioning groove (11); the sealing structure comprises a first sealing groove (14), a first sealing strip (15), a second sealing strip (24) and a second sealing groove (23); support columns (3) are fixedly connected to the left and right sides of the door frame body (1); a support mechanism is provided between the two groups of support columns (3); the support mechanism comprises a support rod (36), a support plate (38) and a threaded rod (39).

2. The sealing structure of a civil air defense door according to claim 1, characterized in that: The first sealing groove (14) is formed on the rear surface of the first positioning groove (11) near the outer side, the first sealing strip (15) is fixedly connected to the rear surface of the first positioning groove (11) at a position located inside the first sealing groove (14), the second sealing strip (24) is fixedly connected to the rear surface of the first door panel (2) near the outer side, the second sealing groove (23) is formed on the rear surface of the first door panel (2) at a position located inside the second sealing strip (24), the first sealing strip (15) is clamped inside the second sealing groove (23), and the second sealing strip (24) is clamped inside the first sealing groove (14).

3. The sealing structure of a civil air defense door according to claim 2, characterized in that: The second door panel (21) is fixedly connected to the rear surface of the first door panel (2); a sealing ring (22) is fixedly connected to the outer surface of the second door panel (21); the first door panel (2) is clamped on the inner side of the first positioning groove (11); the second door panel (21) is clamped on the inner side of the third positioning groove (13); and the sealing ring (22) is clamped on the inner side of the second positioning groove (12).

4. The sealing structure of a civil air defense door according to claim 1, characterized in that: Three groups of positioning plates (28) are fixedly connected to the left and right sides of the first door panel (2); a positioning rod (29) is fixedly connected to the left end of the left positioning plate (28); three groups of first limiting grooves (31) and three groups of second limiting grooves (33) are respectively provided on the surfaces of the left and right groups of support columns (3); and a clamping groove (32) is provided on the inner wall of the first limiting groove (31).

5. The sealing structure of a civil air defense door according to claim 4, characterized in that: The three groups of positioning plates (28) on the left are respectively slidably connected to the three groups of first limiting grooves (31), and the positioning rods (29) are clamped inside the clamping grooves (32). The three groups of positioning plates (28) on the right are respectively slidably connected to the three groups of second limiting grooves (33).

6. The sealing structure of a civil air defense door according to claim 1, characterized in that: Two groups of first fixing blocks (26) are fixedly connected to the left and right sides of the front surface of the first door panel (2), and a plug-in rod (27) is slidably connected to the inner side of the first fixing block (26). Two groups of fixing holes (311) are formed on the inner surfaces of the two groups of support columns (3), and the plug-in rod (27) is plugged into the inside of the fixing holes (311).

7. The sealing structure of a civil air defense door according to claim 1, characterized in that: Two groups of second fixing blocks (34) are fixedly connected to the surface of the right support column (3), and the second fixing blocks (34) are rotatably connected to the right end of the support rod (36). Two groups of third fixing blocks (35) are fixedly connected to the surface of the left support column (3), and the left end of the support rod (36) is clamped on the inner side of the third fixing block (35), and a latch (37) is inserted into the interior of the third fixing block (35).

8. The sealing structure of a civil air defense door according to claim 7, characterized in that: The support plate (38) is fixedly connected to the middle part of the support rod (36), the threaded rod (39) is threadedly connected to the middle part of the support plate (38), the front end of the threaded rod (39) is fixedly connected to a hand wheel (310), the middle part of the front surface of the first door panel (2) is fixedly connected to an abutment block (25), and the rear end of the threaded rod (39) is tightly abutted against the surface of the abutment block (25).

Images