Radiation-proof airtight door

Abstract

The utility model relates to the technical field of anti-radiation doors, in particular to an anti-radiation air-tight door, which adopts a sealing ring which can exhaust air and is provided with a groove to suck a door body in a sucker shape, so that the door body is labor-saving to close, and the air-tight reliability is improved. Comprising a door frame and a door body, an annular air exhaust channel is formed in the door frame, the panel is installed on the front end face of the door frame, the multiple inner holes are formed in the panel and communicated with the air exhaust channel of the door frame, the rubber ring is installed on the front end face of the panel, the section of the rubber ring is in a U shape, and the outer hole is communicated with the air exhaust channel of the door frame. An annular groove is formed in the middle of the front end face of the rubber ring, a plurality of outer holes are formed in the bottom of the groove of the rubber ring and are aligned with the inner holes respectively, the air extractor is installed on the rear end face of the door frame, and the air extraction end of the air extractor extends into the air extraction channel of the door frame.

Description

Technical Field

[0001] This utility model relates to the technical field of radiation protection doors, and in particular to a radiation protection airtight door. Background Technology

[0002] Radiation-proof airtight doors are important isolation facilities in radiation rooms. Various radiation-proof airtight doors are disclosed in the prior art. For example, Chinese utility model patent CN221074012U discloses a radiation-proof movable airtight door. This door includes a door frame, a door leaf whose shape and size match the inner cavity of the door frame, a drive assembly for driving the door leaf to translate axially along the door frame, and a sliding support assembly. The door frame has an inwardly extending limiting skirt on its edge away from the wall. Pulleys are symmetrically arranged at both ends of the bottom surface of the door frame, and rollers are symmetrically arranged on both sides of the top surface of the bottom edge. The rollers are rotatably connected to the door frame. This movable door, by moving the door leaf axially along the door frame, can achieve a complete seal of the doorway and effectively prevent radiation leakage.

[0003] The aforementioned radiation-proof movable airtight door achieves complete sealing of the door opening by setting a sealing rubber layer on the flange or on the edge of the door leaf when closed. However, the sealing rubber layer set between the door leaf and the door frame has a certain elasticity. In order to achieve a good airtight effect, a lot of force is required to squeeze the sealing rubber layer, which makes it difficult to close the airtight door. Moreover, if the door lock is accidentally opened, the elasticity of the sealing rubber layer will cause the door leaf to open unexpectedly, resulting in airtight failure. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a radiation-proof airtight door that uses a suction cup-shaped sealing ring with a groove that can be extracted to adhere to the door body, making the door easier to close and improving the airtightness reliability.

[0005] This utility model discloses a radiation-proof airtight door, comprising a door frame and a door body. A door opening is provided in the middle of the door frame, and the door body is hinged to the door frame. It also includes a panel, inner holes, a rubber ring, outer holes, and an air extractor. An annular air extraction channel is provided inside the door frame. The panel is mounted on the front face of the door frame and has multiple inner holes that communicate with the air extraction channel. The rubber ring is mounted on the front face of the panel and has a U-shaped cross-section. An annular groove is located in the middle of the front face of the rubber ring, and multiple outer holes are provided at the bottom of the groove, each aligned with one of the inner holes. The air extractor is mounted on the rear face of the door frame, with its extraction end extending into the air extraction channel of the door frame. When the door body is closed towards the front face of the door frame, the inner end face of the door body is pressed against the front end of the rubber ring. The operation of the air extractor allows air from the groove of the rubber ring to enter the door body through the multiple outer holes and the multiple inner holes. The air is drawn into the suction channel of the frame and discharged to the rear of the door frame, creating a negative pressure in the space between the groove of the rubber ring and the inner end face of the door. Under the action of external atmospheric pressure, the rubber ring is flattened into a suction cup shape and adheres tightly to the inner end face of the door, thereby reducing the force required to close the door and making it easier to close. After the door is fully closed, the door frame and the door are airtightly sealed, the air pump stops, and the suction channel of the door frame is maintained at a negative pressure, allowing the rubber ring to firmly adhere to the door as a suction cup. At this time, if the door lock is accidentally opened, the elasticity of the rubber ring will not cause the door to pop open, avoiding airtight failure caused by accidental opening of the door, thus improving reliability. When the door needs to be opened, the valve of the air pump is opened, allowing outside air to enter the suction channel of the door frame, restoring the normal pressure in the groove of the rubber ring, and allowing the elasticity of the rubber ring to open the door, making it easier to open the door.

[0006] Preferably, it also includes multiple air extraction pipes, which are slidably inserted into multiple inner holes and multiple outer holes. The multiple air extraction pipes connect the groove of the rubber ring and the air extraction channel of the door frame. The air in the groove of the rubber ring is introduced into the air extraction channel of the door frame through the multiple air extraction pipes for exhaust. When the door is closed, the multiple air extraction pipes are pushed to extend and slide. The installation of multiple air extraction pipes ensures a stable air extraction effect.

[0007] Preferably, it also includes multiple push rods, with the fixed ends of the multiple push rods installed on the rear end face of the door frame, and the output shafts of the multiple push rods connected to multiple air extraction pipes respectively; when the door needs to be opened, the piston rods of the multiple push rods extend forward, pushing the multiple air extraction pipes forward to push the door open, thereby realizing automatic door opening.

[0008] Preferably, it also includes multiple elongated holes. Multiple elongated holes are provided on the side walls of multiple suction pipes. The two ends of the multiple elongated holes extend into the groove of the rubber ring and the suction channel of the door frame, respectively. When the vacuum pump is running, the air in the groove of the rubber ring enters the multiple suction pipes through the front ends of the multiple elongated holes and enters the suction channel of the door frame through the rear ends of the multiple elongated holes. When the door is completely closed, the front ends of the suction pipes are pushed by the door to be flush with the ground of the groove of the rubber ring. At this time, the multiple elongated holes are no longer connected to the groove of the rubber ring. That is, the front ends of the multiple suction pipes seal the multiple outer holes and the multiple inner holes, improve the sealing between the door and the rubber ring, and maintain a stable negative pressure state.

[0009] Preferably, the assembly also includes multiple slots, a pin holder, multiple pins, a shaft, a worm gear, a screw, and a worm wheel. Multiple slots are installed on the inner wall of the door frame. The pin holder is slidably installed on the inner wall of the door body, with multiple pins at its ends, each pin aligned with a slot. The shaft is rotatably installed on the door body, with a handle at its outer end and a worm gear concentrically installed at its inner end. The screw is rotatably installed on the inner wall of the door body, threadedly connected to the pin holder. The worm wheel is concentrically installed on the screw, meshing with the worm. After the door is closed onto the door frame, rotating the handle causes the shaft to rotate the worm gear. The worm gear meshes with the worm wheel, driving the screw to rotate. The threaded action between the screw and the pin holder moves the pin holder towards the door frame, causing the pin holder to engage multiple pins into the slots, thus locking the door to the door frame. The self-locking action of the worm gear and worm wheel prevents accidental opening of the door due to accidental rotation of the screw, improving reliability.

[0010] Preferably, it also includes a ball bearing seat and a ball bearing. The ball bearing seat is installed on the lower end face of the door body, and the ball bearing is rotatably installed in the ball bearing seat. The ball bearing rolls and contacts the ground. The ball bearing and the ball bearing seat provide auxiliary support for the door body, making the door body more stable when opening and closing, reducing hinge wear and friction, and further making it easier to open and close the door.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: When the door is closed towards the front end of the door frame, the inner end face of the door is pressed tightly against the front port of the rubber ring. The operation of the vacuum pump causes air in the groove of the rubber ring to enter the vacuum channel of the door frame through multiple external and internal holes and be discharged to the rear of the door frame. This creates a negative pressure in the space between the groove of the rubber ring and the inner end face of the door. Under the action of external atmospheric pressure, the rubber ring is flattened into a suction cup shape and adheres tightly to the inner end face of the door, thereby reducing the force required to close the door and making it easier to close. Once the door is completely closed, the door frame and door body are airtightly sealed. The vacuum pump stops, maintaining negative pressure in the vacuum channel of the door frame. This allows the rubber ring to act as a suction cup, firmly adhering the door body. At this point, even if the door lock is accidentally opened, the elasticity of the rubber ring will not cause the door body to pop open, avoiding airtightness failure due to accidental opening and ensuring higher reliability. When the door body needs to be opened, the vacuum pump valve opens, allowing outside air to enter the vacuum channel of the door frame. This restores normal pressure in the groove of the rubber ring, allowing the elasticity of the rubber ring to open the door body, making opening the door easier. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a structural schematic diagram of the door in the open state of this utility model;

[0014] Figure 3 This is a structural schematic diagram of the door in the closed state of this utility model;

[0015] Figure 4 This is a schematic diagram of the rear-view axonometric structure of this utility model;

[0016] Figure 5 It is a structural diagram showing the disassembled state of the door frame, panel, rubber ring, air extractor, air extraction pipe and push rod, etc.

[0017] Figure 6 yes Figure 1 A magnified schematic diagram of the local structure at point A;

[0018] Figure 7 It is a structural diagram of the air extraction pipe, push rod, and elongated hole.

[0019] The following are labels in the attached diagram: 1. Door frame; 2. Door body; 3. Panel; 4. Inner hole; 5. Rubber ring; 6. Outer hole; 7. Vacuum pump; 8. Vacuum pipe; 9. Push rod; 10. Long slot; 11. Slot; 12. Pin holder; 13. Pin; 14. Shaft; 15. Worm gear; 16. Screw; 17. Worm wheel; 18. Ball bearing seat; 19. Ball bearing. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] Example 1

[0022] like Figures 1 to 5 As shown, a radiation-proof airtight door includes a door frame 1 and a door body 2. A door opening is provided in the middle of the door frame 1, and the door body 2 is hinged to the door frame 1. It also includes a panel 3, inner holes 4, a rubber ring 5, outer holes 6, and an air extractor 7. An annular air extraction channel is provided inside the door frame 1. The panel 3 is installed on the front end face of the door frame 1. Multiple inner holes 4 are provided on the panel 3 and are connected to the air extraction channel of the door frame 1. The rubber ring 5 is installed on the front end face of the panel 3. The cross-section of the rubber ring 5 is U-shaped. The middle of the front end face of the rubber ring 5 is an annular groove. Multiple outer holes 6 are provided at the bottom of the groove of the rubber ring 5. The multiple outer holes 6 are respectively aligned with the multiple inner holes 4. The air extractor 7 is installed on the rear end face of the door frame 1, and the air extraction end of the air extractor 7 extends into the air extraction channel of the door frame 1.

[0023] When door 2 is closed towards the front end of door frame 1, the inner end face of door 2 is pressed against the front end of rubber ring 5. The operation of vacuum pump 7 causes air in the groove of rubber ring 5 to enter the vacuum channel of door frame 1 through multiple external holes 6 and multiple internal holes 4, and then be discharged to the rear of door frame 1. This creates a negative pressure in the space between the groove of rubber ring 5 and the inner end face of door 2. Under the action of external atmospheric pressure, rubber ring 5 is flattened into a suction cup shape and adheres tightly to the inner end face of door 2, thereby reducing the force required to close door 2 and making it easier to close. After door 2 is fully closed, the door... When the airtight seal of frame 1 and door 2 is closed, the vacuum pump 7 stops, maintaining negative pressure in the vacuum channel of door frame 1. This allows the rubber ring 5 to act as a suction cup, firmly adhering to door 2. At this time, if the door lock of door 2 is accidentally opened, the elasticity of the rubber ring 5 will not cause door 2 to pop open, avoiding airtight failure caused by accidental opening of door 2, thus improving reliability. When it is necessary to open door 2, the valve of vacuum pump 7 is opened, allowing outside air to enter the vacuum channel of door frame 1, restoring normal pressure in the groove of rubber ring 5. The elasticity of rubber ring 5 then opens door 2, making it easier to open door 2.

[0024] It also includes multiple slots 11, pin holders 12, multiple pins 13, shafts 14, worm gears 15, screws 16, and worm wheels 17. Multiple slots 11 are installed on the inner side wall of the door frame 1. The pin holders 12 are slidably installed on the inner side wall of the door body 2. Multiple pins 13 are provided at the ends of the pin holders 12. The multiple pins 13 are respectively aligned with the multiple slots 11. The shaft 14 is rotatably installed on the door body 2. A handle is provided at the outer end of the shaft 14. The worm gear 15 is concentrically installed at the inner end of the shaft 14. The screw 16 is rotatably installed on the inner side wall of the door body 2. The screw 16 is threadedly connected to the pin holders 12. The worm wheel 17 is concentrically installed on the screw 16 and meshes with the worm gear 15. It also includes a ball bearing seat 18 and a ball 19. The ball bearing seat 18 is installed on the lower end face of the door body 2. The ball 19 is rotatably installed in the ball bearing seat 18 and rolls in contact with the ground.

[0025] After the door 2 is closed onto the door frame 1, turning the handle causes the shaft 14 to drive the worm gear 15 to rotate. The worm gear 15 meshes with the worm wheel 17, driving the screw 16 to rotate. The threaded action between the screw 16 and the pin holder 12 causes the pin holder 12 to move towards the door frame 1, so that the pin holder 12 drives multiple pins 13 to be inserted into multiple slots 11, thereby locking the door 2 to the door frame 1. The self-locking action of the worm gear 15 and the worm wheel 17 can prevent the door 2 from being accidentally opened due to the accidental rotation of the screw 16, thus improving reliability. The ball bearing 19 and the ball bearing seat 18 provide auxiliary support for the door 2, making the door 2 more stable when opening and closing, reducing hinge wear and friction, and further making it easier to open and close the door 2.

[0026] Example 2

[0027] like Figure 4 , Figures 6 to 7 As shown, based on Embodiment 1, it also includes multiple suction pipes 8, which are slidably inserted into multiple inner holes 4 and multiple outer holes 6, and the multiple suction pipes 8 connect the groove of the rubber ring 5 and the suction channel of the door frame 1; it also includes multiple push rods 9, the fixed ends of the multiple push rods 9 are installed on the rear end face of the door frame 1, and the output shafts of the multiple push rods 9 are respectively connected to the multiple suction pipes 8; it also includes multiple elongated holes 10, and multiple elongated holes 10 are provided on the side walls of the multiple suction pipes 8, and the two ends of the multiple elongated holes 10 extend into the groove of the rubber ring 5 and the suction channel of the door frame 1, respectively.

[0028] Air in the groove of the rubber ring 5 is introduced into the air extraction channel of the door frame 1 through multiple suction pipes 8 for exhaust. When the door 2 is closed, the multiple suction pipes 8 are pushed to extend and slide. When the air extractor 7 is running, the air in the groove of the rubber ring 5 enters the multiple suction pipes 8 through the front end of the multiple elongated holes 10 and enters the air extraction channel of the door frame 1 through the rear end of the multiple elongated holes 10. When the door 2 is completely closed, the front end of the suction pipe 8 is pushed by the door 2 to be flush with the groove of the rubber ring 5. At this time, the multiple elongated holes 10 are no longer connected to the groove of the rubber ring 5. That is, the front end of the multiple suction pipes 8 seals the multiple outer holes 6 and the multiple inner holes 4, improving the sealing between the door 2 and the rubber ring 5 and maintaining a stable negative pressure state. The installation of multiple suction pipes 8 ensures a stable air extraction effect. When the door 2 needs to be opened, the piston rods of the multiple push rods 9 extend forward, pushing the multiple suction pipes 8 forward and pushing the door 2 forward to open it, realizing automatic door opening.

[0029] like Figures 1 to 7 As shown, this utility model discloses an airtight door for radiation protection. During operation, the door body 2 is first closed towards the front end of the door frame 1, pressing the inner end face of the door body 2 against the front port of the rubber ring 5. The air extraction fan 7 operates, causing air in the groove of the rubber ring 5 to enter the air extraction channel of the door frame 1 through multiple elongated holes 10 on the multiple extraction pipes 8 and be discharged to the rear of the door frame 1. This creates a negative pressure in the space between the groove of the rubber ring 5 and the inner end face of the door body 2. Then, under the action of external atmospheric pressure, the rubber ring 5 is flattened into a suction cup shape and adheres tightly to the inner end face of the door body 2, thereby reducing the force required to close the door body 2 and making it easier to close. After the door body 2 is completely closed, the door frame 1 and door body 2 are airtightly sealed. The air extraction fan 7 stops, and the front ends of the multiple extraction pipes 8 seal the multiple external holes 6, maintaining a negative pressure in the air extraction channel of the door frame 1. The rubber ring 5 acts as a suction cup to firmly adhere the door body 2. Then, turning the handle causes the shaft 14 to drive the worm gear 15 to rotate. The worm gear 15 meshes with the worm wheel 17 to drive the screw 16 to rotate. The thread action between the screw 16 and the pin holder 12 causes the pin holder 12 to move towards the door frame 1, so that the pin holder 12 drives multiple pins 13 to insert into multiple slots 11, thereby locking the door body 2 and the door frame 1. At this time, if the door lock of the door body 2 is accidentally opened, the elasticity of the rubber ring 5 will not cause the door body 2 to pop open, avoiding the airtightness failure caused by the accidental opening of the door body 2, thus improving reliability. Finally, when it is necessary to open the door body 2, the valve of the air extractor 7 is opened, allowing outside air to enter the air extraction channel of the door frame 1, restoring the normal pressure in the groove of the rubber ring 5. The piston rods of multiple push rods 9 extend forward, pushing multiple air extraction pipes 8 forward to push the door body 2 forward, thereby opening the door body 2.

[0030] The main functions achieved by this utility model are:

[0031] 1. The door is closed with a grooved, suction-cup-like sealing ring that can be extracted, making the door easier to close and improving airtightness.

[0032] 2. Automatic door opening is achieved by utilizing the elasticity of rubber ring 5 and the door pushing assembly;

[0033] 3. Adopt a door lock mechanism with a self-locking structure to improve the locking reliability of the door.

[0034] The radiation-proof airtight door of this utility model uses common mechanical methods for installation, connection, or setting. Any method that can achieve the desired beneficial effect can be implemented. The door frame 1, door body 2, rubber ring 5, air extraction pipe 8, air extraction fan 7, push rod 9, slot 11, pin bracket 12, pin 13, shaft 14, worm gear 15, screw 16, worm wheel 17, ball bearing seat 18, and ball bearing 19 of this utility model are commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0035] All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A radiation-proof airtight door, comprising a door frame (1) and a door body (2), wherein a door opening is provided in the middle of the door frame (1), and the door body (2) is hinged to the door frame (1); characterized in that, It also includes a panel (3), an inner hole (4), a rubber ring (5), an outer hole (6), and an air extractor (7). The door frame (1) is provided with an annular air extraction channel. The panel (3) is installed on the front end face of the door frame (1). The panel (3) is provided with multiple inner holes (4). The multiple inner holes (4) are connected to the air extraction channel of the door frame (1). The rubber ring (5) is installed on the front end face of the panel (3). The cross-section of the rubber ring (5) is U-shaped. The middle part of the front end face of the rubber ring (5) is an annular groove. Multiple outer holes (6) are provided at the bottom of the groove of the rubber ring (5). The multiple outer holes (6) are respectively aligned with the multiple inner holes (4). The air extractor (7) is installed on the rear end face of the door frame (1). The air extraction end of the air extractor (7) extends into the air extraction channel of the door frame (1).

2. The radiation-proof airtight door as described in claim 1, characterized in that, It also includes multiple suction pipes (8), which are slidably inserted into multiple inner holes (4) and multiple outer holes (6). The multiple suction pipes (8) connect the groove of the rubber ring (5) and the suction channel of the door frame (1).

3. The radiation-proof airtight door as described in claim 2, characterized in that, It also includes multiple push rods (9), the fixed ends of which are installed on the rear end face of the door frame (1), and the output shafts of the multiple push rods (9) are respectively connected to multiple air extraction pipes (8).

4. The radiation-proof airtight door as described in claim 2, characterized in that, It also includes multiple elongated holes (10), and multiple elongated holes (10) are provided on the side walls of multiple air extraction pipes (8). The two ends of the multiple elongated holes (10) extend into the groove of the rubber ring (5) and the air extraction channel of the door frame (1), respectively.

5. The radiation-proof airtight door as described in claim 1, characterized in that, It also includes multiple slots (11), a pin holder (12), multiple pins (13), a shaft (14), a worm (15), a screw (16), and a worm wheel (17). Multiple slots (11) are installed on the inner side wall of the door frame (1). The pin holder (12) is slidably installed on the inner side wall of the door body (2). Multiple pins (13) are provided at the end of the pin holder (12). The multiple pins (13) are aligned with the multiple slots (11) respectively. The shaft (14) is rotatably installed on the door body (2). A handle is provided at the outer end of the shaft (14). The worm (15) is concentrically installed at the inner end of the shaft (14). The screw (16) is rotatably installed on the inner side wall of the door body (2). The screw (16) is threadedly connected to the pin holder (12). The worm wheel (17) is concentrically installed on the screw (16). The worm wheel (17) meshes with the worm (15).

6. The radiation-proof airtight door as described in claim 1, characterized in that, It also includes a ball bearing seat (18) and a ball bearing (19). The ball bearing seat (18) is installed on the lower end face of the door body (2), and the ball bearing (19) is rotatably installed in the ball bearing seat (18) and the ball bearing (19) rolls in contact with the ground.

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