Radiation shielding transmission device and application method

Abstract

The present invention discloses a radiation shielding transmission device, comprising: a shielding room, at both ends of which are respectively provided with an entrance and an exit for plates to enter and exit; a first transmission component arranged in the shielding room and cooperating with the entrance and the exit to form a plate transmission area; two second transmission components arranged on both sides of the first transmission component, and the transmission surfaces of each second transmission component are connected by a plurality of cooperating moving baffles; wherein the spacing between each moving baffle is configured to be greater than the length of the plate, and the moving baffle is configured to be made of a lead-containing elastic material. The present invention provides a radiation shielding transmission device and an application method, which limits the structure of the shielding transmission device, and the single-sided shielding room occupies a small area and has a length slightly greater than the length of the plate. At the same time, when it is further used in a shielding system, the plate duty ratio can be as high as more than 95% through the coordination of the moving baffle and the length of the plate, and the electron beam utilization rate is extremely high, which effectively improves production efficiency.

Description

Technical Field

[0001] The present invention relates to a shielded transmission device used in radiation processing. More particularly, the present invention relates to a radiation shielded transmission device and a method of use used in electron beam radiation curing or other radiation processing. Background Art

[0002] During the electron beam radiation curing process, the X-rays generated are harmful to the environment and operators, and leakage must be strictly prevented. Usually, a maze structure is used to allow the X-rays to refract several times before reaching the external environment, which can basically meet national standards. For a single relatively rigid plate material, it cannot be bent. Therefore, the maze structure has a complex transmission method, occupies a large area, has a low duty cycle of less than 50%, and is costly, which hinders the promotion and application of electron beam radiation curing in the field of plates.

[0003] In the prior art, various ways have been proposed to improve these technical shortcomings, such as taking some methods to reduce the floor space or increase the duty cycle. For example, the patent name is "An electron beam radiation shielding device based on continuous production". It adopts the method of repeatedly opening and closing the transmission channel, which greatly shortens the channel length. It only needs to be slightly longer than the plate to achieve radiation shielding and transmission, and the cost is low; but its disadvantage is that the duty cycle is very low, less than 50%, because it is necessary to close the shielding room exit after the plate completely leaves the shielding room, and then open the shielding room entrance to allow the next plate to enter the shielding room. Therefore, the duty cycle is very low, and the electron beam utilization is very low, which affects production efficiency.

[0004] Another example is the patent named "A revolving door-type corner electron beam curing shielding device for plates", which uses a rotating baffle and has a duty cycle of up to about 70%; its disadvantage is that it occupies a large area, and the diameter of the disc is about 3 times the length of the plate. For example, for a common plate with a specification of 2400mm*1000mm, the turntable diameter needs to be at least 6 meters, which is very large and occupies a large area.

[0005] Therefore, it can be seen that the above technologies cannot take into account the defects of low duty cycle and large size, and an effective solution is urgently needed. Summary of the invention

[0006] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages which will be described hereinafter.

[0007] In order to achieve these purposes and other advantages according to the present invention, there is provided a radiation shielding transmission device, comprising:

[0008] The shielding room has an entrance and an exit at both ends for the plates to enter and exit;

[0009] A first transmission component disposed in the shielding room and cooperating with the inlet and the outlet to form a plate transmission area;

[0010] Two second transmission components are arranged on both sides of the first transmission component, and the transmission surfaces of the second transmission components are connected by a plurality of matching motion baffles;

[0011] The length of the moving baffle is greater than the length of the transmission roller, the spacing between the moving baffles is configured to be greater than the length of the plate, and the moving baffles are configured to be made of an elastic material containing lead.

[0012] Preferably, the motion baffle is arranged on the second transmission components at both ends through matching metal fixings;

[0013] Wherein, the motion baffle is configured to include at least one lead rubber layer structure;

[0014] The height of the moving baffle is limited so that both ends can be in close contact with the top and bottom of the shielding room, and the lower end is in close contact with the upper surface of the first transmission component.

[0015] Preferably, the width and height of the inlet and the outlet are configured to be larger than the width and height of the plate.

[0016] Preferably, a first shielding layer for absorbing X-rays is provided on the outer shell of the shielding room;

[0017] The shielding chamber forms a moving baffle return area below the first transmission assembly;

[0018] An isolation plate with a length shorter than the transmission length of the second transmission component is arranged between the transmission area and the return area, and a second shielding layer for absorbing X-rays is arranged on the isolation plate.

[0019] Preferably, the motion baffle is configured in a strip shape or a radial shape.

[0020] Preferably, the first transmission component is configured to adopt a transmission roller structure;

[0021] Each second transmission assembly is configured to adopt a gear and chain cooperation mode;

[0022] Wherein, the second transmission component is provided with a tensioning wheel in the shielding room for adjusting the tension of the chain;

[0023] A chain adjustment area matched with the tensioning wheel is arranged in the shielding room.

[0024] Preferably, a plurality of fixed baffles made of lead-containing elastic material are provided on the top of the shielding room;

[0025] Wherein, each fixed baffle is suspended downward and located between adjacent rollers, and fills the gap between the rollers and the chain;

[0026] The lowermost edge of the fixed baffle is spatially lower than the top of the roller baffle and partially overlaps with the side edge of the moving baffle.

[0027] Preferably, the first transmission assembly is provided with matching roller baffles between the outermost adjacent rollers;

[0028] Wherein, the top of the roller baffle is higher in space than the top plane of the transmission roller and higher than the lower edge plane of the moving baffle;

[0029] The two ends of the roller baffle in the long direction are configured to be close to the surface of the side wall of the shielding room.

[0030] A shielding system including a radiation shielding transmission device, comprising:

[0031] an irradiation chamber for conducting electron beam irradiation;

[0032] Two radiation shielding transmission devices are arranged opposite to each other at the input and output ends of the irradiation chamber;

[0033] A method for applying a radiation shielding transmission shielding system, comprising:

[0034] Step 1: The gear drives the chain, and the chain drives the moving baffle to circulate along the plate transmission area, the moving baffle return area, and the chain adjustment area;

[0035] Step 2: When the front end of the external plate is at a predetermined distance from the entrance of the shielding room, one of the moving baffles is controlled to enter the input side plane of the plate transmission area, so that the plate moves synchronously with the moving baffle while maintaining a predetermined distance;

[0036] Step 3: When the front end of the plate reaches a predetermined distance from the shielding room exit, the moving baffle leaves the plane of the transmission channel and enters the moving baffle return area;

[0037] Step 4: When the rear end of the plate completely enters the shielding room and reaches a predetermined distance away from the entrance of the shielding room, return to step 2.

[0038] The present invention includes at least the following beneficial effects: First, by limiting the structure of the shielding transmission device, the present invention has a single-sided shielding room with a small footprint and a length slightly greater than the length of the plate. When it is further used in a shielding system, the coordination of the moving baffle and the length of the plate allows the plate duty cycle to be as high as 95% or more, resulting in an extremely high electron beam utilization rate, which effectively improves production efficiency.

[0039] Secondly, the present invention can adjust the chain length and the position of the moving baffle according to the specific length of the plate, keep the spacing between the plates basically unchanged, and maintain a high duty cycle and electron beam utilization rate.

[0040] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic structural diagram of a radiation shielding transmission device in one embodiment of the present invention;

[0042] Figure 2 for Figure 1 A partial enlarged structural diagram of the moving baffle near the shielding room exit;

[0043] Figure 3 for Figure 1 A schematic diagram of a partially enlarged structure of the moving baffle at the return area of ​​the moving baffle;

[0044] Figure 4 for Figure 1 The partially enlarged structural diagram of the moving baffle in a free state near the entrance of the shielding room;

[0045] Figure 5 for Figure 1 A schematic diagram of a top view structure;

[0046] Figure 6 It is a schematic diagram of the system layout when the present invention is specifically used for irradiation processing;

[0047] Figure 7 This is a schematic diagram of a structure for irradiating small-sized products in another embodiment of the present invention;

[0048] Figure 8 This is a structural schematic diagram of another embodiment of the present invention, in which the motion baffle return area and the chain adjustment area are arranged above the plate transmission area;

[0049] Fig. 9 This is a schematic diagram of a radial motion baffle structure in another embodiment of the present invention;

[0050] Fig.10 for Fig. 9 An enlarged schematic diagram of the radial motion baffle in the neutral free state;

[0051] Fig.11 for Fig. 9 In the middle return area, an enlarged schematic diagram of the radial motion baffle deformation;

[0052] in, Figures 1 to 9The markings are: shielding room 1, transmission roller 2, plate 3, shielding room entrance 4, shielding room exit 5, chain 6, gear 7, tensioning wheel 8, moving baffle 9, fixed baffle 10, roller baffle 11, isolation plate 12, plate transmission area 13, moving baffle return area 14, chain adjustment area 15, irradiation room 16, small-size products 18, pallet 19. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0054] It should be understood that terms such as “having”, “including” and “comprising” used herein do not specify the existence or addition of one or more other elements or combinations thereof.

[0055] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] Figure 1-4 The embodiment of a radiation shielding transmission device according to the present invention is shown, which comprises: a shielding chamber 1, at both ends of which are respectively provided with an inlet 4 and an outlet 5 for a plate 3 to enter and exit;

[0058] A first transmission component is arranged in the shielding room and cooperates with the inlet and the outlet to form a plate transmission area 13, which is used for directional transmission of the plate;

[0059] Two second transmission components are arranged on both sides of the first transmission component, and the transmission surfaces of each second transmission component are connected by a plurality of matching motion baffles 9. The second transmission components are respectively arranged at both ends of the first transmission component and connected by the motion baffles, so as to shield the rays scattered from the irradiation chamber during the transmission of the plate;

[0060] Among them, the length of the moving baffle is greater than the length of the transmission roller, and the spacing between each moving baffle is configured to be greater than the length of the plate. The setting of the number and spacing of the moving baffles ensures that at any time, there is a moving baffle located on the plane of the plate transportation channel to block the leakage of X-rays, and the moving baffle is configured to be made of lead-containing elastic material. By limiting the material of the moving baffle, it is ensured that it has a certain deformation amount during the transmission process, and can deform with the change of the external boundary, automatically fill the gap between the external boundary, and prevent X-rays from leaking from the gap. Furthermore, the length and width of the moving baffle can partially exceed the top and bottom of the shielding room, that is, it is designed to be in overlapping contact with other radiation shielding components, and its deformation is used to ensure its sealing during the transmission process to ensure the shielding effect.

[0061] In another embodiment, the motion baffle is disposed on the second transmission components at both ends through matching metal fixings (not shown);

[0062] wherein the motion baffle is configured to include at least one lead rubber layer;

[0063] The height of the moving baffle is defined as follows: in the plate transmission area, the upper end of the moving baffle has a height higher than the top surface of the shielding room in a free state, and when passing through the top surface of the shielding room, the upper end bends and deforms to be in close contact with the top of the shielding room; the lower end of the moving baffle has a height lower than the upper surface of the first transmission component and the roller baffle in a free state, and when passing through the upper surface of the first transmission component and the roller baffle, the lower end bends and deforms to be in close contact with the surface of the first transmission component and the roller baffle. The height of the moving baffle is defined as follows: in the moving baffle return area, the upper end of the moving baffle has a height higher than the lower surface of the isolation plate in a free state, and when passing through the lower surface of the isolation plate, the upper end bends and deforms to be in close contact with the lower surface of the isolation plate; the lower end of the moving baffle has a height lower than the bottom surface of the shielding room in a free state, so when passing through the bottom surface of the shielding room, the lower end bends and deforms to be in close contact with the bottom surface of the shielding room. In this structure, the moving baffle can be composed of a single layer or multiple layers of lead rubber sheets to ensure that its shielding effect meets the requirements of use, and the lead rubber layer is fixed on a metal rod, and the two ends of the metal rod are fixed on two chains located on both sides of the shielding room. The metal rod is driven by the chains to allow the rubber layer to be maintained and repaired as needed. The structural mode of the metal fixing and the first lead rubber layer here can be any one or a combination of two of bonding, screw fixing, crimping, and clamping. For example, a limiting groove is set on the fixing rod to accommodate the lead rubber layer, and the lead rubber layer is clamped in the limiting groove for preliminary limitation, and the position of the lead rubber layer is further limited by the screws or tightening fixing pins of the structural fixing.

[0064] In another embodiment, the width and height of the inlet and outlet are configured to be larger than the width and height of the plate, which is used to ensure smooth passage of the plate and has better adaptability.

[0065] like Figure 1 In another embodiment, a first shielding layer (not shown) for absorbing X-rays is provided on the outer shell of the shielding room. In this structure, the shielding material for absorbing X-rays can be various metals with large atomic numbers, such as lead and lead-containing metal materials, to shield the X-rays entering the shielding room; the shielding room forms a moving baffle return area 14 below the first transmission component;

[0066] An isolation plate 12 with a length less than the transmission length of the second transmission component is arranged between the transmission area and the return area, and a second shielding layer capable of absorbing X-rays is arranged on the isolation plate. In this structure, the isolation plate is made of an absorbing shielding material containing X-rays, such as various metals with large atomic numbers, preferably lead and lead-containing materials, to separate the shielding room into a plate transmission area and a moving baffle return area, thereby blocking part of the X-rays from entering the moving baffle return area, thereby ensuring its shielding effect.

[0067] like Figure 4 , 9 -11. In another embodiment, the moving baffle is configured as a long strip or a radial shape. In actual operation, the moving baffle can be made into a long strip, a radial shape or even other structures that can realize the function as needed. The thickness must ensure that it can completely absorb and block the X-rays when they penetrate.

[0068] like Figure 1-4 In another embodiment, the first transmission component is configured to adopt a transmission roller structure; each second transmission component is configured to adopt a gear 7 and a chain 6. In actual operation, the gears are arranged into two groups, which are respectively located at the edges of both sides of the shielding room, and the chains are also arranged into two groups to be used in conjunction with the gears;

[0069] Wherein, the second transmission component is provided with a tensioning wheel 8 for adjusting the tension of the chain in the shielding room, which is located in the chain adjustment area and is used for tensioning the chain;

[0070] The shielding room is provided with a chain adjustment area 15 matched with the tension wheel, in which the chain length can be adjusted, and the gear and the tension wheel located in the chain adjustment area are adjusted simultaneously to meet the irradiation needs of different plates.

[0071] like Figure 5In another embodiment, the top of the shielding room is provided with a plurality of fixed baffles 10 made of lead-containing elastic material, preferably lead rubber, which can deform with the change of the external boundary, automatically fill the gap between the external boundary, and prevent X-rays from leaking from the gap;

[0072] Among them, each fixed baffle is suspended downward and located between adjacent rollers, and fills the gap between the rollers and the chain. In actual use, it can be composed of a single layer or multiple layers of lead rubber sheets, fixed on the upper wall of the shielding room, suspended downward and located between the chain and the transmission roller, and a fixed baffle is arranged between each transmission roller;

[0073] The bottom edge of the fixed baffle is spatially lower than the top of the roller baffle, forming a structure for shielding edge X-rays, and partially overlaps with the side edge of the moving baffle. In this structure, the edges of the fixed baffle and the moving baffle also overlap to prevent X-rays from being reflected from the inner walls on both sides of the shielding room to the outside of the shielding room. When the moving baffle passes by, the overlapping areas of the moving baffle and the fixed baffle undergo elastic deformation to prevent leakage gaps. After passing through, they each return to their original state and continue to shield X-rays.

[0074] like Figure 1 In another embodiment, the first transmission component is provided with two roller baffles 11 made of lead elastic material between the outermost adjacent rollers, and a plurality of matching roller baffles can be added between the rollers as needed;

[0075] The top of the roller baffle is higher than the top plane of the transmission roller 2 in space, and higher than the lower edge plane of the moving baffle. In this structure, the roller baffle is located between the transmission rollers, and the top is higher than the top plane of the transmission roller, and higher than the lower edge plane of the moving baffle, which is used to prevent X-rays from leaking from the transmission roller space to the outside of the shielding room, and cooperates with other structural parts to ensure good shielding of the rays during the transmission process;

[0076] The two ends of the roller baffle in the long direction are configured to be close to the side wall surface of the shielding room, thereby having a better shielding effect; in this scheme, the roller baffle is made of lead-containing elastic material, and when the plate and the moving baffle pass by, corresponding elastic deformation occurs, and it fits tightly with the plate and the moving baffle to block radiation leakage.

[0077] like Figure 6 , a shielding system including a radiation shielding transmission device, comprising: an irradiation chamber 16 for electron beam irradiation; two radiation shielding transmission devices arranged opposite to each other at the input end and the output end of the irradiation chamber;

[0078] In this structure, the radiation shielding devices are applied to both sides of the irradiation room respectively, realizing effective shielding of radiation during the whole process of irradiation transmission, thereby ensuring the use effect of the equipment. At the same time, through the structural limitation and coordination of various components in the device, the radiation shielding transmission layout in a small space is realized, and at the same time, the duty cycle of the plate during the irradiation process is effectively improved, thereby ensuring the efficiency of irradiation.

[0079] A method for applying a radiation shielding transmission shielding system, comprising:

[0080] Step 1: The gear drives the chain, and the chain drives the moving baffle to circulate along the plate transmission area, the moving baffle return area, and the chain adjustment area;

[0081] Step 2: When the front end of the external plate is at a predetermined distance from the entrance of the shielding room, one of the moving baffles is controlled to enter the input side plane of the plate transmission area, so that the plate moves synchronously while maintaining a predetermined distance with the moving baffle. In specific operation, when the front end of the external plate reaches a predetermined distance from the entrance of the shielding room, the moving baffle enters the plane of the plate transmission channel, maintains a predetermined distance with the front end of the moving baffle, and moves synchronously to block X-rays and prevent X-rays from leaking from the channel of the plate transmission area to the outside of the shielding room;

[0082] Step 3: When the front end of the plate reaches a predetermined distance from the shielding room exit, the moving baffle leaves the plane of the transmission channel and enters the moving baffle return area;

[0083] Step 4. When the rear end of the plate completely enters the shielding room and reaches a predetermined distance from the entrance of the shielding room, and the front end of the subsequent plate is ready to enter the shielding room and reaches a predetermined distance from the entrance of the shielding room, another moving baffle enters the channel plane, maintains a predetermined distance from the two plates in front and behind, and moves synchronously to block X-ray leakage, complete the continuous transportation of the plate, and shield the X-rays. In this scheme, the transmission and shielding methods of the plate in one of the devices in the system (the ray shielding device at the input end of the irradiation chamber) are limited, and the shielding device on the other side of the irradiation chamber works in the same way, so it will not be described here. Through such structural limitations and coordination with the irradiation chamber, the length of the single-sided device can be only slightly larger than the length of the plate, effectively reducing the equipment footprint. At the same time, through the shielding effect of the moving baffle, the distance between the plates is constant during operation, which can effectively improve the plate duty cycle, improve the utilization rate of the electron beam, and the efficiency of irradiation.

[0084] In Example 1, two sets of radiation shielding transmission devices are respectively placed on both sides of the electron beam irradiation processing area. The plate enters from the radiation shielding transmission device on one side and is transmitted to the electron beam irradiation processing area. The surface coating is cured by electron beam radiation and then transported to the external production line through the radiation shielding transmission device on the other side. The X-rays generated inside the electron beam irradiation processing area are blocked inside by the radiation shielding transmission devices located on both sides of the irradiation processing area, thereby realizing continuous radiation curing production of the plate.

[0085] Embodiment 2, as in the embodiment 1, sets the length of the plate to 2400 mm, the width to 1000 mm, and sets the plate spacing to 100 mm as required, so that the duty cycle reaches 96%.

[0086] Example 3, as in Example 1, the length of the plate is set to 1500 mm, the width is set to 1000 mm, and the plate spacing is set to 100 mm as required, so that the duty cycle reaches 94%.

[0087] Embodiment 4, as Figure 7 As shown, small-sized products 18, such as mobile phone casings, etc., can be placed on a large-sized tray 19 (whose structural size can refer to the size of the plate) to achieve the same electron beam continuous irradiation treatment as the large-sized plate.

[0088] Embodiment 5, as Figure 8 As shown, the moving baffle return area 14 and the chain adjustment area 15 can be arranged above the plate transmission area 13 as needed, and the isolation plate 12 can also be equipped with a double-layer structure according to actual conditions and usage requirements to match the radiation shielding under a specific environmental layout.

[0089] Embodiment 6, as Figure 9-11 Shown is a structural layout using radial moving baffles.

[0090] The above solution is only an illustration of a preferred embodiment, but is not limited thereto. When implementing the present invention, appropriate replacement and / or modification can be performed according to user needs.

[0091] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention are obvious to those skilled in the art. Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation methods. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and equivalent scopes, the present invention is not limited to the specific details and the legends shown and described here.

Claims

1. A radiation shielding transmission device, characterized in that: include: The shielding room has an entrance and an exit at both ends for the plates to enter and exit; A first transmission component disposed in the shielding room and cooperating with the inlet and the outlet to form a plate transmission area; Two second transmission components are arranged on both sides of the first transmission component, and the transmission surfaces of the second transmission components are connected by a plurality of matching motion baffles; The length of the moving baffle is greater than the length of the transmission roller, the spacing between the moving baffles is configured to be greater than the length of the plate, and the moving baffles are configured to be made of an elastic material containing lead; The first transmission component is configured to adopt a transmission roller structure; Each second transmission assembly is configured to adopt a gear and chain cooperation mode; Wherein, the second transmission component is provided with a tensioning wheel in the shielding room for adjusting the tension of the chain; A chain adjustment area matching the tensioning wheel is provided in the shielding room; The top of the shielding room is provided with a plurality of fixed baffles made of lead elastic material; Wherein, each fixed baffle is suspended downward and located between adjacent rollers, and fills the gap between the rollers and the chain; The bottom edge of the fixed baffle is lower than the top of the roller baffle in space and partially overlaps with the side edge of the moving baffle; The first transmission component is provided with two roller baffles made of lead elastic material between the outermost adjacent rollers; Wherein, the top of the roller baffle is slightly higher than the top plane of the transmission roller in space, and higher than the lower edge plane of the moving baffle; Both ends of the roller baffle in the longitudinal direction are configured to be close to the side wall surface of the shielding room.

2. The radiation shielding transmission device according to claim 1, characterized in that: The motion baffle is arranged on the second transmission components at both ends through matching metal fixings; wherein the motion baffle is configured to include at least one lead rubber layer; The height of the moving baffle is limited so that both ends can be in close contact with the top and bottom of the shielding room, and the lower end is in close contact with the upper surface of the first transmission component.

3. The radiation shielding transmission device according to claim 1, characterized in that: The width and height of the inlet and the outlet are configured to be larger than the width and height of the plate.

4. The radiation shielding transmission device according to claim 1, characterized in that: The shielding room shell is provided with a first shielding layer for absorbing X-rays; The shielding chamber forms a moving baffle return area below the first transmission assembly; An isolation plate with a length shorter than the transmission length of the second transmission component is arranged between the transmission area and the return area, and a second shielding layer for absorbing X-rays is arranged on the isolation plate.

5. The radiation shielding transmission device according to claim 1, characterized in that: The motion baffle is configured in a strip shape or a radial shape.

6. A shielding system comprising the radiation shielding transmission device according to any one of claims 1 to 5, characterized in that: include: an irradiation chamber for conducting electron beam irradiation; Two ray shielding transmission devices are arranged opposite to each other at the input end and the output end of the irradiation chamber.

7. A method for applying the shielding system according to claim 6, characterized in that: include: Step 1: The gear drives the chain, and the chain drives the moving baffle to circulate along the plate transmission area, the moving baffle return area, and the chain adjustment area; Step 2: When the front end of the external plate is at a predetermined distance from the entrance of the shielding room, one of the moving baffles is controlled to enter the input side plane of the plate transmission area, so that the plate moves synchronously with the moving baffle while maintaining a predetermined distance; Step 3: When the front end of the plate reaches a predetermined distance from the shielding room exit, the moving baffle leaves the plane of the transmission channel and enters the moving baffle return area; Step 4: When the rear end of the plate completely enters the shielding room and reaches a predetermined distance away from the entrance of the shielding room, return to step 2.

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