A radiation protection device with multi-layer protection

Abstract

The present invention relates to a radiation protection device with multi-layer protection, comprising a door frame arranged on a wall, an upper guide rail being arranged on the top of the door frame, a lower guide rail being arranged on the bottom of the door frame, a protection door being arranged in the door frame, the protection door comprising a door panel body, a plurality of parallel protection unit insertion grooves being arranged on the door panel body, fixing grooves being arranged on the upper and lower sides of the ends of the parallel protection unit insertion grooves, a protection plate being inserted into the protection unit insertion groove, a fixing plate being inserted into the fixing groove, the upper and lower fixing plates being clamped on both sides of the protection plate, the number of protection unit insertion grooves being two or more, after the protection plate is inserted into the protection unit insertion groove, the end of the protection plate is sealed by a sealant, the number of protection plates on the door panel body can be changed arbitrarily, and the protection plates are all thin lead plates, the protection plates can be transported in a centralized manner, the number of protection plates in the protection door is selected according to the density of radiation in the site, the protection door will not be too bulky and is flexible to use.

Description

Technical Field

[0001] The present invention belongs to radiation protection equipment, and in particular, to a radiation protection device with multi-layer protection. Background Art

[0002] Since the discovery of radioactive substances, they have been widely used in various fields such as medicine, energy, or military industry. Overall protection must be done during the transportation, production, or storage of radioactive substances. Not only should the walls be able to prevent radiation leakage, but the doors should also be well protected. Currently, large military units or radioactive substance experimental laboratories must use protective doors to achieve the purpose of isolating radiation. Protective doors generally use very thick lead plates as materials, mainly because lead plates have the function of shielding radioactive rays. However, there is a problem in the long-term use of protective doors: due to the heavy weight and large inertia of the protective doors, each time the door is opened or closed, the surface where the wall contacts the protective door is easily damaged, and it is quite strenuous to close the door manually. Only the closing work can be carried out by driving with a motor, and there are some limitations in the usage method. The weight of the protective door can reach several tons. The stability of the movement of the protective door and the sealing performance between the protective door and the door frame are also crucial. Otherwise, radioactive ray leakage is likely to occur, and the radiation protection effect will be greatly reduced. Currently, the bottom of the protective door uses rollers to contact the guide rail, but it is impossible to ensure good sealing between the bottom surface of the protective door and the surface of the guide rail.

[0003] Currently, the basic protective doors are all solid and heavy lead plates. It is very difficult to handle the protective doors during factory shipment, and different environments have different requirements for the thickness of the lead plates. After the protective doors are shipped from the factory, the thickness cannot be changed, and the thickness specifications of the protective doors cannot be adjusted according to the actual density of radioactive rays in the environment, resulting in limitations in use. Summary of the Invention

[0004] The purpose of the present invention is to solve the defects existing in the prior art and provide a radiation protection device with multi-layer protection.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A radiation protection device with multi-layer protection, including a door frame provided on a wall. An upper guide rail is provided at the top of the door frame, and a lower guide rail is provided at the bottom of the door frame. A protective door is provided inside the door frame. The top of the protective door contacts the upper guide rail, and the bottom contacts the lower guide rail. A rolling gear is provided at the top of the protective door, and a rack meshing with the rolling gear is provided on the upper guide rail. A driving motor connected to the rolling gear is provided on one side of the protective door;

[0007] On both sides of the doorframe, within the wall, there are protective door accommodation cavities. On the inner walls of the protective door accommodation cavities, there are multiple dynamic buffer mechanisms located on both sides of the protective door. The dynamic buffer mechanism includes a fixed rubber column. The end of the rubber column is connected to a buffer suction cup. Inside the rubber column, there is a buffer spring. One end of the buffer spring is fixed to the wall, and the other end extends out from the port of the buffer suction cup. On the side surface of the protective door, there are buffer holes corresponding to the ends of the buffer springs, and buffer pads are provided inside the buffer holes.

[0008] The protective door includes a free end face that passes through the doorframe and a hidden end face hidden inside the protective door accommodation cavity. On the hidden end face, there is a fixed sleeve, and a dynamic spring is provided on the fixed sleeve. On the inner wall of the protective door accommodation cavity, there is a dynamic cylinder, and the end of the dynamic cylinder is connected to a dynamic plate corresponding to the dynamic spring.

[0009] The protective door includes a door panel main body. On the door panel main body, there are multiple parallel protective unit insertion grooves. On the upper and lower sides at the ends of the parallel protective unit insertion grooves, there are fixed grooves. Protective plates are inserted into the protective unit insertion grooves, and fixing plates are inserted into the fixed grooves. The upper and lower two fixing plates clamp on both sides of the protective plate.

[0010] For the above-mentioned radiation protection device with multi-layer protection, on both sides of the lower guide rail, there are bottom plates, and there are guide rail grooves on the bottom plates. At the bottom of the protective door, there are two rolling mechanisms corresponding to the guide rail grooves. The rolling mechanism includes a rolling bracket connected to the bottom of the protective door, and a rolling wheel is connected to the rolling bracket. The rolling wheel is located inside the guide rail groove, and the peripheral surface of the rolling wheel contacts the inner wall of the guide rail groove. At the bottom of the protective door, there is a guide groove, and on the surface of the lower guide rail, there is a guide flange that fits with the guide groove. The bottom surface of the protective door is closely attached to the surface of the lower guide rail.

[0011] For the above-mentioned radiation protection device with multi-layer protection, the material of the protective plate is lead.

[0012] For the above-mentioned radiation protection device with multi-layer protection, the number of protective unit insertion grooves is two or more. After the protective plate is inserted into the protective unit insertion groove, the end of the protective plate is sealed with sealant.

[0013] For the above-mentioned radiation protection device with multi-layer protection, there is a gap between adjacent protective plates.

[0014] The beneficial effects of the present invention are as follows: On both sides of the door frame of the device, there are protective door receiving cavities inside the wall. On the inner wall of the protective door receiving cavity, there are multiple power buffer mechanisms located on both sides of the protective door. The power buffer mechanism includes a fixed rubber column. The end of the rubber column is connected to a buffer suction cup. Inside the rubber column, there is a buffer spring. One end of the buffer spring is fixed to the wall, and the other end extends out from the port of the buffer suction cup. On the side of the protective door, there are buffer holes corresponding to the ends of the buffer springs. Inside the buffer holes, there are buffer pads. Each time the protective door is driven to open or close by a driving motor, after the driving motor stops, the protective door will continue to move a certain distance due to inertia. At this time, the end of the buffer spring will extend into the buffer hole on the side of the protective door and contact the buffer pad. The buffer spring reduces the kinetic energy of the protective door through its own elastic potential energy. If the protective door moves further, the rubber column and the buffer suction cup will further contact the side of the protective door until the protective door stops. The buffer spring, the rubber column, and the buffer suction cup play a role in buffering the protective door, preventing the protective door from damaging the wall due to its own inertia.

[0015] The protective door includes a door panel main body. On the door panel main body, there are multiple parallel protective unit insertion slots. On the upper and lower sides at the ends of the parallel protective unit insertion slots, there are fixed slots. Protective plates are inserted into the protective unit insertion slots, and fixing plates are inserted into the fixed slots. The upper and lower two fixing plates clamp on both sides of the protective plate to fix the protective plate. The number of protective unit insertion slots is two or more. After the protective plate is inserted into the protective unit insertion slot, the end of the protective plate is sealed with sealant. The number of protective plates on the door panel main body can be changed arbitrarily, and the protective plates are all relatively thin lead plates. The protective plates can be transported centrally, and the number of protective plates in the protective door can be selected according to the density of radiation in the site. The protective door will not be too heavy and is flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the present invention;

[0017] Figure 2 is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 is a schematic diagram of the hidden end face of the protective door of the present invention;

[0019] Figure 4 is Figure 3 the enlarged view of area A in

[0020] Figure 5 is a schematic diagram of the side of the protective door of the present invention;

[0021] Figure 6 is a schematic diagram of the inside of the protective door of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] As Figures 1 to 4 shown, a radiation protection device with multi-layer protection includes a door frame 2 provided on a wall 1. An upper guide rail 3 is provided at the top of the door frame 2, and a lower guide rail 4 is provided at the bottom of the door frame 2. A protective door 5 is provided inside the door frame 2. The top of the protective door 5 contacts the upper guide rail 3, and the bottom contacts the lower guide rail 4. A rolling gear 6 is provided at the top of the protective door 5, and a rack meshing with the rolling gear 6 is provided on the upper guide rail 3. A driving motor 7 connected to the rolling gear 6 is provided on one side of the protective door 5.

[0024] On both sides of the door frame 2 and inside the wall 1, there are protective door accommodation cavities 8. A plurality of power buffer mechanisms are provided on the inner walls of the protective door accommodation cavities 8. The power buffer mechanisms are located on both sides of the protective door 5. The power buffer mechanism includes a fixed rubber column 9. A buffer suction cup 10 is connected to the end of the rubber column 9. A buffer spring 11 is provided inside the rubber column 9. One end of the buffer spring 11 is fixed on the wall 1, and the other end extends out from the port of the buffer suction cup 10. A buffer hole 12 corresponding to the end of the buffer spring 11 is provided on the side surface of the protective door 5, and a buffer backing plate 13 is provided inside the buffer hole 12.

[0025] The protective door includes a free end face passing through the door frame 2 and a hidden end face hidden inside the protective door accommodation cavity 8. A fixed sleeve 14 is provided on the hidden end face. A power spring 15 is provided on the fixed sleeve 14. A power cylinder 16 is provided on the inner wall of the protective door accommodation cavity 8. The end of the power cylinder 16 is connected to a power plate 17 corresponding to the power spring 15. Whether the driving motor 7 controls the protective door 5 to close or the protective door 5 is manually controlled to close, when the protective door 5 is opened, the cylinder rod of the power cylinder 16 can quickly extend, and the power plate 17 quickly impacts the power spring 15. The power spring 15 converts the impact force into power and quickly transmits it to the protective door 5. When the protective door 5 closes, it starts quickly itself, achieving the effect of quickly closing the door.

[0026] In this embodiment, a manual handle 18 is provided on the protective door 5. The protective door 5 is a solid plate, the material of the protective door 5 is lead, and the upper guide rail 3 and the lower guide rail 4 are parallel to each other.

[0027] Each time the protective door 5 of the device is driven to open or close by the driving motor 7, after the driving motor 7 stops, the protective door 5 will continue to move a certain distance due to inertia. At this time, the end of the buffer spring 11 will extend into the buffer hole 12 on the side of the protective door 5 and contact the buffer backing plate 13. The buffer spring 11 reduces the kinetic energy of the protective door 5 through its own elastic potential energy. If the protective door 5 moves further, the rubber column 9 and the buffer suction cup 10 further contact the side of the protective door 5 until the protective door 5 stops. The buffer spring 11, the rubber column 9, and the buffer suction cup 10 play a role in buffering the protective door 5 and preventing the protective door 5 from damaging the wall due to its own inertia.

[0028] In order to ensure the sealing and sliding stability of the protective door 5, bottom plates 19 are provided on both sides of the lower guide rail 4, and guide rail grooves 20 are provided on the bottom plate 19. Two rolling mechanisms corresponding to the guide rail grooves 20 are provided at the bottom of the protective door 5, and the rolling mechanisms include a rolling bracket 21 connected to the bottom of the protective door 5, and a rolling wheel 22 is connected to the rolling bracket 21. The rolling wheel 22 is located in the guide rail groove 20, and the circumferential surface of the rolling wheel 22 contacts the inner wall of the guide rail groove 20; a guide groove 23 is provided at the bottom of the protective door 5, and a guide flange 24 that matches the guide groove 23 is provided on the surface of the lower guide rail 4. The bottom surface of the protective door 5 is tightly fitted with the surface of the lower guide rail 4 to ensure the sealing. The cooperation between the guide flange 24 and the guide groove 23, and the cooperation between the rolling wheel 22 and the guide rail groove 20 make the protective door 5 move smoothly with a small shaking amplitude, thereby ensuring the stability of the heavy protective door in use.

[0029] like Figure 5 , Figure 6 As shown, the protective door 5 includes a door panel body, on which a plurality of parallel protective unit insertion slots 25 are provided, and fixing slots 26 are provided on the upper and lower sides of the ends of the parallel protective unit insertion slots 25, a protective plate 27 is inserted into the protective unit insertion slot 25, and a fixing plate 28 is inserted into the fixing slot 26, and the upper and lower fixing plates 28 are clamped on both sides of the protective plate 27 to fix the protective plate 27. The number of protective unit insertion slots 25 is two or more, and after the protective plate 27 is inserted into the protective unit insertion slot 25, the end of the protective plate 27 is sealed by a sealant, and the number of protective plates 27 on the door panel body can be changed arbitrarily, and the protective plates 27 are all thin lead plates, and the protective plates 27 can be transported in a centralized manner. The number of protective plates in the protective door is selected according to the density of radiation on the site, and the protective door 5 will not be too bulky and is flexible to use.

[0030] The device described in the present invention is not limited to the embodiments described in the specific implementation manner. Those skilled in the art may derive other implementation manners based on the technical solution of the present invention, which also fall within the technical innovation scope of the present invention.

Claims

1. A multi-layer radiation protection device, comprising a door frame provided on a wall, an upper guide rail provided at the top of the door frame, and a lower guide rail provided at the bottom of the door frame. Characterized in that, a protective door is provided inside the door frame. The top of the protective door contacts the upper guide rail, and the bottom contacts the lower guide rail. A rolling gear is provided at the top of the protective door, and a rack meshing with the rolling gear is provided on the upper guide rail. A driving motor connected to the rolling gear is provided on one side of the protective door. On both sides of the door frame inside the wall, there are protective door accommodation cavities. A plurality of power buffer mechanisms are provided on the inner walls of the protective door accommodation cavities. The power buffer mechanisms are located on both sides of the protective door. The power buffer mechanism includes a fixed rubber column. The end of the rubber column is connected to a buffer suction cup. A buffer spring is provided inside the rubber column. One end of the buffer spring is fixed to the wall, and the other end extends out from the port of the buffer suction cup. Buffer holes corresponding to the ends of the buffer springs are provided on the side surface of the protective door, and buffer pads are provided in the buffer holes. The protective door includes a free end face passing through the door frame and a hidden end face hidden inside the protective door accommodation cavity. A fixed sleeve is provided on the hidden end face, and a power spring is provided on the fixed sleeve. A power cylinder is provided on the inner wall of the protective door accommodation cavity, and the end of the power cylinder is connected to a power plate corresponding to the power spring. On both sides of the lower guide rail, there are bottom plates with guide rail grooves. Two rolling mechanisms corresponding to the guide rail grooves are provided at the bottom of the protective door. The rolling mechanism includes a rolling bracket connected to the bottom of the protective door, and a rolling wheel is connected to the rolling bracket. The rolling wheel is located in the guide rail groove, and the peripheral surface of the rolling wheel contacts the inner wall of the guide rail groove. A guide groove is provided at the bottom of the protective door, and a guide flange matching the guide groove is provided on the surface of the lower guide rail. The bottom surface of the protective door is closely attached to the surface of the lower guide rail. The protective door includes a door panel main body. A plurality of parallel protective unit insertion grooves are provided on the door panel main body. Fixed grooves are provided on both the upper and lower sides at the ends of the parallel protective unit insertion grooves. A protective plate is inserted into the protective unit insertion groove, and a fixing plate is inserted into the fixed groove. The upper and lower fixing plates clamp both sides of the protective plate. The material of the protective plate is lead; there is a gap between adjacent protective plates.

2. A multi-layer radiation protection device according to claim 1, Characterized in that, the number of protective unit insertion grooves is more than two. After the protective plate is inserted into the protective unit insertion groove, the end of the protective plate is sealed with sealant.

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