Irradiation system and method for sterilization using the irradiation system

Abstract

The embodiment of the present invention discloses an irradiation system and a method for sterilizing using the irradiation system. The irradiation system includes: an irradiation device, including: a first accelerator, including a first switch magnet for deflecting and scanning the first electron beam generated by the first accelerator to form a first irradiation area for irradiating a part of the surface of the irradiated object; a second accelerator, including a second switch magnet for deflecting and scanning the second electron beam generated by the second accelerator to form a second irradiation area for irradiating the remaining surface of the irradiated object; a transportation mechanism includes: a first transportation section for transporting the irradiated object to the first irradiation area; a second transportation section for transporting the irradiated object to the second irradiation area; wherein the transportation direction of the second transportation section is perpendicular to the transportation direction of the first transportation section, and the first accelerator and the second accelerator are respectively located above and below the irradiated object. The irradiation system sterilizes the irradiated object, solving the problem of chemical agent residues existing in sterilization using chemical agents.

Description

Technical Field

[0001] The invention relates to the field of radiation treatment, and in particular to an radiation system and a method for sterilizing using the radiation system. Background Art

[0002] With the globalization of economic trade, a large number of international activities have made the cross-border spread of pests a global problem that is becoming increasingly serious.

[0003] Regarding the disinfection and sterilization of cold chain food, it is necessary to ensure that the viruses that may be carried by the inner and outer packaging of the food are thoroughly, effectively and safely disinfected. Therefore, three aspects need to be controlled: first, the sterilization is complete and thorough, especially in a low temperature environment, which can effectively kill the 2019 novel coronavirus; second, the disinfection method is simple to operate; third, safety and hygiene. The safety of cold chain food is of vital importance. At present, in order to solve the problem of virus sterilization that may exist in cold chain packaging boxes or frozen products, the existing technology often uses chemical agents for sterilization.

[0004] However, the use of chemical agents for sterilization may result in the problem of chemical residues, which in turn may contaminate food. Summary of the invention

[0005] The main purpose of the present invention is to provide an irradiation system and a method for sterilizing using the irradiation system to solve the problem of using chemical agents to sterilize cold chain food in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an irradiation system, comprising: an irradiation device, the irradiation device comprising: a first accelerator, comprising a first switch magnet for deflecting and scanning a first electron beam generated by the first accelerator to form a first irradiation zone for irradiating a portion of the surface of the irradiated object; a second accelerator, comprising a second switch magnet for deflecting and scanning a second electron beam generated by the second accelerator to form a second irradiation zone for irradiating the remaining surface of the irradiated object; a transportation mechanism, the transportation mechanism comprising: a first transportation section, the first transportation section is used to transport the irradiated object to the first irradiation zone; a second transportation section, the second transportation section is used to transport the irradiated object to the second irradiation zone; wherein, the transportation direction of the second transportation section is perpendicular to the transportation direction of the first transportation section, and the first accelerator and the second accelerator are respectively located above and below the irradiated object.

[0007] According to some embodiments, a first scanning box is installed at the end of the first accelerator, a first switch magnet is installed on the first scanning box, and a symmetrically arranged first deflection magnet and a second deflection magnet are installed on the first scanning box downstream of the first switch magnet to irradiate a portion of the surface of the irradiated object; and / or a second scanning box is installed at the end of the second accelerator, a second switch magnet is installed on the first scanning box, and a symmetrically arranged third deflection magnet and a fourth deflection magnet are installed on the second scanning box downstream of the second switch magnet to irradiate the remaining surface of the irradiated object.

[0008] According to some embodiments, the first switch magnet is an H-type secondary magnet; and / or the second switch magnet is an H-type secondary magnet.

[0009] According to some embodiments, the irradiation system further includes: a controller configured to provide a superimposed current obtained by superimposing a plurality of currents with different frequencies to the first switch magnet and the second switch magnet, so as to deflect and scan the first electron beam.

[0010] According to some embodiments, the controller provides a periodically changing first current to the first switch magnet to deflect the electron beam; and a second current having a triangular wave waveform is superimposed on the first current to scan the first electron beam.

[0011] According to some embodiments, the period of the first current is a first period, which is sequentially divided into a first switching time period, a second switching time period, a third switching time period and a fourth switching time period; wherein the first switching time period is equal to the third switching time period; and the second switching time period is equal to the fourth switching time period.

[0012] According to some embodiments, when the first switch magnet is in the first switch time period, the current provided by the controller to the first switch magnet is greater than 0; when the first switch magnet is in the second switch time period and the fourth switch time period, the current provided by the controller to the first switch magnet is equal to 0; when the first switch magnet is in the third switch time period, the current provided by the controller to the first switch magnet is less than 0.

[0013] According to some embodiments, the first deflection magnet includes: a first magnetic yoke, the first magnetic yoke includes a first side surface and a second side surface arranged opposite to each other, the first side surface is arranged close to the switch magnet; a second magnetic yoke, the pole surface of the second magnetic yoke is arranged parallel to the pole surface of the first magnetic yoke; a first coil, the first coil is arranged on the first magnetic yoke and the second magnetic yoke to supply power to the first magnetic yoke and the second magnetic yoke; wherein the angle between the first side surface and the second side surface is greater than or equal to 0°; and / or the angle between the first side surface and the second side surface is less than or equal to 5°.

[0014] According to some embodiments, the first deflection magnet and the second deflection magnet are magnets with the same structure.

[0015] According to some embodiments, the first accelerator and the second accelerator have the same structure.

[0016] According to some embodiments, the irradiation device also includes: a microwave power source, which generates microwave power; a power divider, which is connected to the microwave power source; the first accelerator is connected to the power divider through a first waveguide, and the second accelerator is connected to the power divider through a second waveguide, so as to feed the microwave power into the first accelerator and the second accelerator at the same time.

[0017] According to some embodiments, the transport mechanism further comprises: a first steering structure, the first steering structure docking with the output end of the first transport section and the input end of the second transport section respectively, so as to transport the irradiated object from the first transport section to the second transport section.

[0018] According to some embodiments, the first accelerator is located above the object to be irradiated, and the second accelerator is located below the object to be irradiated.

[0019] According to some embodiments, the transport mechanism also includes: a third transport section, which is located downstream of the second transport section and is used to transport the irradiated object away from the second irradiation area, and the third transport section and the second transport section have the same transport direction; there is a gap between the second transport section and the third transport section to avoid the second electron beam generated by the second accelerator irradiating the irradiated object.

[0020] According to some embodiments, the transport mechanism also includes: a fourth transport section, which is located downstream of the third transport section and is used to output the irradiated object after irradiation; and a second steering structure, which is respectively docked with the output end of the third transport section and the input end of the fourth transport section to transport the irradiated object from the third transport section to the fourth transport section.

[0021] To achieve the above-mentioned purpose, according to another aspect of the present invention, a method for sterilization using an irradiation system is provided. The method for sterilization using an irradiation system is applied to an irradiation system, wherein the irradiation system comprises an irradiation device, a transportation mechanism and a controller, wherein the irradiation device comprises a first accelerator and a second accelerator, wherein the first accelerator comprises a first switch magnet for deflecting and scanning a first electron beam generated by the first accelerator, and the second accelerator comprises a second switch magnet for deflecting and scanning a second electron beam generated by the second accelerator, and the transportation mechanism comprises a first transportation section and a second transportation section; the sterilization method comprises the following steps: placing an object to be irradiated on the transportation mechanism; the controller controls the first transportation section to transport the object to be irradiated to a first irradiation zone formed by the first accelerator; the controller controls the first accelerator to emit a first electron beam to irradiate and sterilize a part of the surface of the object to be irradiated on the first transportation section in the first irradiation zone; after irradiation and sterilization in the first irradiation zone, the controller controls the transportation mechanism to transport the object to a second irradiation zone formed by the second accelerator; wherein the transportation direction of the second transportation section is perpendicular to the transportation direction of the first transportation section, and the first accelerator and the second accelerator are respectively located above and below the object to be irradiated.

[0022] According to some embodiments, the transport mechanism includes a first steering structure, and the controller controls the transport mechanism to transport the irradiated object to the second irradiation area, including the following steps: the controller controls the first steering structure to transport the irradiated object at the output end of the first transport section to the second transport section; the second transport section transports the irradiated object to the second irradiation area.

[0023] According to some embodiments, the first accelerator is located above the object to be irradiated, and the second accelerator is located below the object to be irradiated; the transportation mechanism also includes a third transportation section, and the second transportation section is located downstream of the second transportation section and has the same transportation direction as the second transportation section; the controller controls the transportation mechanism to output the irradiated object, including the following steps: the controller controls the second transportation section to transport the irradiated object to the input end of the third transportation section, and the third transportation section transports the irradiated object away from the second irradiation area.

[0024] According to some embodiments, the transport mechanism also includes a fourth transport section and a second steering structure, the fourth transport section is located downstream of the third transport section, and the second steering structure is respectively docked with the output end of the third transport section and the input end of the fourth transport section; the controller controls the transport mechanism to output the irradiated objects and also includes the following steps: the controller controls the second steering structure to transport the irradiated objects at the output end of the third transport section to the fourth transport section; the controller controls the fourth transport section to output the irradiated objects.

[0025] In the irradiation device according to the embodiment of the present invention, through the above-mentioned technical scheme, at least one of the following beneficial effects can be obtained: an irradiation device and a transportation mechanism are arranged in the irradiation system, and the irradiation sterilization of all surfaces of the irradiated object is realized through the cooperation of the two, and the irradiation of all surfaces can be realized without turning over and moving the irradiated object, thereby reducing the risk of cross infection; on the other hand, an electron beam with strong penetrating ability is used to exert a direct or indirect biological effect on the organisms inside and outside the surface of the irradiated object, so as to achieve the purpose of killing or sterilizing the organisms inside and outside the surface of the irradiated object, and will not cause harm to the atmospheric environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of an irradiation system according to an embodiment of the present invention.

[0028] Figure 2 Shows Figure 1 Front view of the irradiation system in.

[0029] Figure 3 Shows Figure 1 Right side view of the irradiation system.

[0030] Figure 4 4 is a front view of an irradiation device of an irradiation system according to an embodiment of the present invention.

[0031] Figure 5 It is a front view of the first accelerator of the irradiation system in the embodiment of the present invention in the working state.

[0032] Figure 6 It is a structural schematic diagram of the first switch magnet of the irradiation system according to an embodiment of the present invention.

[0033] Figure 7 It is a structural schematic diagram of a first deflection magnet of an irradiation system according to an embodiment of the present invention.

[0034] Figure 8 4 is a waveform diagram of a first current of a first switch magnet of an irradiation system according to an embodiment of the present invention.

[0035] Fig. 9 4 is a waveform diagram of the second current of the first switch magnet of the irradiation system according to the embodiment of the present invention.

[0036] Fig.10 4 is a waveform diagram of the superimposed current of the first switch magnet of the irradiation system according to the embodiment of the present invention.

[0037] Fig.11 It is a flow chart of a method for sterilization using an irradiation system according to an embodiment of the present invention.

[0038] Fig.12 is a flow chart of a method for sterilization using an irradiation system according to another embodiment of the present invention. And

[0039] Fig.13 A schematic diagram showing the relationship between the upward tilt angle of the first deflection magnet and the normalized beam current density of an irradiation system according to an exemplary embodiment of the present invention is shown.

[0040] Description of main component symbols:

[0041] 10. Irradiation system; 100. Irradiation device; 200. Transportation mechanism;

[0042] 110. a first accelerator; 111. a first scanning box;

[0043] 115, electron gun; 1161, first focusing coil; 1162, second focusing coil; 117, accelerating tube; 118, accelerating tube adapter; 119, vacuum maintenance system; 1191, first titanium pump; 1192, second titanium pump; 1193, vacuum exhaust pipe; 125, microwave absorption load;

[0044] 112, first switch magnet; 1121, third magnetic yoke; 1122, fourth magnetic yoke; 1123, third coil; 1124, fourth coil;

[0045] 113, first deflection magnet; 1131, first magnetic yoke; 1132, second magnetic yoke; 1133, first coil; 1134, first side surface; 114, second deflection magnet;

[0046] 120, second accelerator; 121, second scanning box; 122, second switch magnet; 123, third deflection magnet; 124, fourth deflection magnet;

[0047] 130. microwave power source; 140. power divider; 151. first waveguide; 152. second waveguide;

[0048] 210, first transport section; 220, second transport section; 230, first steering structure; 240, third transport section; 250, fourth transport section; 260, second steering structure

[0049] 20. Irradiated objects;

[0050] 31. Electron beam in the first region; 32. Electron beam in the second region; 33. Electron beam in the third region. DETAILED DESCRIPTION

[0051] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components.

[0052] In the detailed description below, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments may be implemented without these specific details. In other cases, known structures and devices are embodied in a schematic manner to simplify the accompanying drawings.

[0053] In order to block the transmission of the 2019 novel coronavirus along the cold chain, the irradiation system 10 of the present invention can be used to irradiate and sterilize the cold chain packaging box. The irradiation system 10 uses the characteristics of strong penetration of electron beam sterilization, uniform and thorough sterilization, and fast processing speed to irradiate and sterilize the irradiated object 20. In addition, no chemical agent will remain when the irradiation system 10 processes sealed packaged items. The following embodiments illustrate the irradiation system 10 of the present invention by taking the irradiated object 20 as a cold chain packaging box as an example, but do not limit the scope of protection of the present invention. The irradiated object 20 can be an object of any shape. For example, three-dimensional shapes such as spheres, hexahedrons, and tetrahedrons.

[0054] Figure 1 is a schematic structural diagram of an irradiation system 10 according to an embodiment of the present invention. Figure 1 The irradiation system 10 includes an irradiation device 100 and a transportation mechanism 200. The irradiation device 100 and the transportation mechanism 200 cooperate to achieve irradiation sterilization of all surfaces of the irradiated object 20.

[0055] See also Figure 1 The irradiation device 100 includes a first accelerator 110 and a second accelerator 120 . The irradiation device 100 is used to irradiate the object 20 to achieve irradiation sterilization of the object 20 .

[0056] The first accelerator 110 includes a first switch magnet 112 for deflecting and scanning the first electron beam generated by the first accelerator 110 to form a first irradiation zone for irradiating a portion of the surface of the irradiated object 20. The second accelerator 120 includes a second switch magnet 122 for deflecting and scanning the second electron beam generated by the second accelerator 120 to form a second irradiation zone for irradiating the remaining surface of the irradiated object 20. In other words, the irradiated object 20 passes through the first irradiation zone and the second irradiation zone successively, and irradiation sterilization of a portion of the surface is achieved in the first irradiation zone, and irradiation sterilization of the remaining surface is achieved in the second irradiation zone, thereby achieving irradiation sterilization of all surfaces of the irradiated zone. Since only the inner and outer surfaces of the packaging box need to be irradiated and sterilized, the energy of the electron beam generated by the irradiation device 100 can be between 2MeV and 4MeV, which belongs to a medium-energy electron beam.

[0057] See also Figure 1 The transport mechanism 200 includes a first transport section 210 and a second transport section 220. The first transport section 210 is used to transport the irradiated object 20 to the first irradiation zone. The second transport section 220 is used to transport the irradiated object 20 to the second irradiation zone. The irradiated object 20 moves with the transport mechanism 200 to achieve irradiation sterilization.

[0058] The transport direction of the second transport section 220 is perpendicular to the transport direction of the first transport section 210. Assume that the transport direction of the first transport section 210 is the first direction, and the transport direction of the second transport section 220 is the second direction, and the first direction and the second direction are perpendicular. The transport directions of the first transport section 210 and the second transport section 220 are both linear transport, that is, the first transport section 210 and the second transport section 220 are arranged vertically. Figure 1 The irradiated object 20 is a hexahedron, which is divided into up, down, left, right, front, and back directions. When the first transport section 210 transports the irradiated object 20 to the first irradiation area, the irradiated object 20 has six directions: up, down, left, right, front, and back. The moving direction of the first transport section 210 is defined as the front, and the remaining five directions are defined. When the second transport section 220 transports the irradiated object 20 to the second irradiation area, the irradiated object 20 has six directions: up, down, left, right, front, and back. The moving direction of the second transport section 220 is defined as the front, and the remaining five directions are defined.

[0059] When the first transport section 210 transports the irradiated object 20 to the first irradiation zone, the first electron beam generated by the first accelerator 110 can irradiate and sterilize the surface of the irradiated object 20 facing the upper, left and right directions. Subsequently, the irradiated object 20 is transported from the first transport section 210 to the second transport section 220. After the irradiated object 20 is transported to the second transport section 220, the direction of the irradiated object 20 changes. The front-to-back direction of the irradiated object 20 on the first transport section 210 changes to the left-to-right direction of the second transport section 220, and the left-to-right direction of the irradiated object 20 on the first transport section 210 changes to the front-to-back direction of the second transport section 220. When the second transport section 220 transports the irradiated object 20 to the second irradiation zone, the second electron beam generated by the second accelerator 120 can irradiate and sterilize the surface of the irradiated object 20 facing the lower, left and right directions. That is, the object 20 to be irradiated passes through the first irradiation zone and the second irradiation zone in sequence to achieve irradiation sterilization of six surfaces. Due to the strong penetrating power of the electron beam, both the inner and outer surfaces of the object 20 to be irradiated can be irradiated.

[0060] The first accelerator 110 and the second accelerator 120 are respectively located above and below the object to be irradiated 20. That is, in the first embodiment, the first accelerator 110 may be located above the object to be irradiated 20, and the second accelerator 120 may be located below the object to be irradiated 20; in the second embodiment, the first accelerator 110 may be located below the object to be irradiated 20, and the second accelerator 120 may be located above the object to be irradiated 20.

[0061] Figure 2 Shows Figure 1 A front view of the irradiation system 10 in FIG. Figure 2 A first scanning box 111 is installed at the end of the first accelerator 110, a first switch magnet 112 is installed on the first scanning box 111, and a first deflection magnet 113 and a second deflection magnet 114 are symmetrically installed on the first scanning box 111 downstream of the first switch magnet 112 to irradiate a part of the surface of the irradiated object 20. The first accelerator 110 can achieve three-sided irradiation of the irradiated object 20 due to the structures of the first switch magnet 112, the first deflection magnet 113 and the second deflection magnet 114 and the current waveform.

[0062] Figure 3 Shows Figure 1 A right side view of the irradiation system 10 in FIG. Figure 3The second scanning box 121 is installed at the end of the second accelerator 120, the second switch magnet 122 is installed on the first scanning box 111, and the third deflection magnet 123 and the fourth deflection magnet 124 are symmetrically installed on the second scanning box 121 downstream of the second switch magnet 122 to irradiate the remaining surface of the irradiated object 20. The second accelerator 120 can achieve three-sided irradiation of the irradiated object 20 due to the structure and current waveform of the second switch magnet 122, the third deflection magnet 123 and the fourth deflection magnet 124.

[0063] In the first embodiment, the first switch magnet 112 is an H-type secondary magnet.

[0064] In the second embodiment, the second switch magnet 122 is an H-type secondary magnet.

[0065] Figure 6 is a structural schematic diagram of the first switch magnet 112 of the irradiation system 10 according to an embodiment of the present invention. Figure 6 , the first switch magnet 112 includes a third yoke 1121, a third coil 1123, a fourth yoke 1122 and a fourth coil 1124. The third yoke 1121 is pressed from silicon steel sheets. The third coil 1123 is mounted on the third yoke 1121, and the third coil 1123 is used to supply power to the third yoke 1121. The fourth yoke 1122 is pressed from silicon steel sheets. The fourth coil 1124 is mounted on the fourth yoke 1122, and the fourth coil 1124 is used to supply power to the fourth yoke 1122. The third coil 1123 and the fourth coil 1124 are connected in series to supply power. The third yoke 1121 and the fourth yoke 1122 are fastened together by fasteners. In some embodiments, the fasteners may be bolts or nuts.

[0066] The irradiation system 10 also includes a controller. Fig.10 is a waveform diagram of the superimposed current of the first switch magnet 112 of the irradiation system 10 according to the embodiment of the present invention. Fig.10 The controller is configured to provide a superimposed current obtained by superimposing a plurality of currents with different frequencies to the first switch magnet 112 and the second switch magnet 122, so as to achieve deflection and scanning of the first electron beam.

[0067] Figure 8 is a waveform diagram of the first current of the first switch magnet 112 of the irradiation system 10 according to the embodiment of the present invention. Figure 8 , the controller provides a periodically changing first current to the first switch magnet 112 to deflect the first electron beam. That is, if the controller provides the first current to the first switch magnet 112 alone, the first electron beam is deflected.

[0068] Fig. 9is a waveform diagram of the second current of the first switch magnet 112 of the irradiation system 10 according to the embodiment of the present invention. Fig. 9 The second current with a triangular waveform is superimposed on the first current to scan the first electron beam. That is, if the controller provides the second current to the first switch magnet 112 alone, the first electron beam scans and expands into a fan shape.

[0069] See also Figure 6 , Figure 7 and Figure 8 The controller provides a first current that changes periodically to the first switch magnet 112 to deflect the electron beam. A second current with a triangular waveform is superimposed on the first current to scan the electron beam.

[0070] In some embodiments, the period of the first current is a first period, and the first period is sequentially divided into a first switching period, a second switching period, a third switching period, and a fourth switching period. That is, the sum of the time value used in the first switching period, the time value used in the second switching period, the time value used in the third switching period, and the time value used in the fourth switching period is equal to the first period.

[0071] In the following embodiments, the first deflection magnet 113 is located on the left side of the irradiated object 20, and the second deflection magnet 114 is located on the right side of the irradiated object 20. When the first switch magnet 112 is in the first switch time period, the current provided by the controller to the first switch magnet 112 is greater than 0. When the current provided by the controller to the first switch magnet 112 is greater than 0, the first electron beam sequentially passes through the first switch magnet 112 and the first deflection magnet 113 to irradiate and sterilize the left side of the irradiated object 20, and at this time, the other sides of the irradiated object 20 are not irradiated.

[0072] When the first switch magnet 112 is in the second switch time period and the fourth switch time period, the current provided by the controller to the first switch magnet 112 is equal to 0. When the current provided by the controller to the first switch magnet 112 is equal to 0, the first electron beam sequentially passes through the first switch magnet 112 and irradiates the upward surface of the irradiated object 20 to irradiate and sterilize the top surface of the irradiated object 20, and at this time, the other side surfaces of the irradiated object 20 are not irradiated.

[0073] When the first switch magnet 112 is in the third switch time period, the current provided by the controller to the first switch magnet 112 is less than 0. When the current provided by the controller to the first switch magnet 112 is less than 0, the first electron beam sequentially passes through the first switch magnet 112 and the second deflection magnet 114 and irradiates the right side of the irradiated object 20 to irradiate and sterilize the right side of the irradiated object 20, and at this time, the other side surfaces of the irradiated object 20 are not irradiated.

[0074] That is, see Fig.10 In one working cycle of the first switch magnet 112, when the first switch magnet 112 is located in the first switch time period, the first electron beam performs irradiation scanning on the left side of the irradiated object 20; when the first switch magnet 112 is located in the second switch time period, the first electron beam performs irradiation scanning on the top surface of the irradiated object 20; when the first switch magnet 112 is located in the third switch time period, the first electron beam performs irradiation scanning on the right side of the irradiated object 20; when the first switch magnet 112 is located in the fourth switch time period, the first electron beam performs irradiation scanning on the top surface of the irradiated object 20 again. In one working cycle of the first switch magnet 112, the left side, top surface, right side, and top surface of the irradiated object 20 are irradiated in sequence, achieving one irradiation sterilization on the left and right sides of the irradiated object 20 and two irradiation sterilization on the top surface of the irradiated object 20. That is, in one working cycle of the first switch magnet 112, three-side irradiation sterilization of the irradiated object 20 is achieved.

[0075] See also Fig.10 , the first switching time period may be expressed as from t0 to t1, the second switching time period may be expressed as from t1 to t2, the third switching time period may be expressed as from t2 to t3, and the fourth switching time period may be expressed as from t3 to t4.

[0076] In particular, the first switching time period is equal to the third switching time period. The second switching time period is equal to the fourth switching time period. That is, the time used from t0 to t1 is equal to that from t2 to t3, and the time used from t1 to t2 is equal to that from t3 to t4. Since the packaging box is a rectangular parallelepiped, the length and width of the two opposite sides are equal, and the working time of the first switching magnet 112 to deflect the first electron beam to the left is equal to the working time of the first switching magnet 112 to deflect the second electron beam to the right, it can be ensured that the beam doses received on the left and right sides of the irradiated object 20 are the same.

[0077] In other embodiments, when the first switch magnet 112 is in the first switch time period, the current provided by the controller to the first switch magnet 112 is less than 0. When the current provided by the controller to the first switch magnet 112 is less than 0, the first electron beam sequentially passes through the first switch magnet 112 and the second deflection magnet 114 to irradiate and sterilize the right side of the irradiated object 20, and at this time, the other side surfaces of the irradiated object 20 are not irradiated.

[0078] When the first switch magnet 112 is in the second switch time period and the fourth switch time period, the current provided by the controller to the first switch magnet 112 is equal to 0. When the current provided by the controller to the first switch magnet 112 is equal to 0, the first electron beam sequentially passes through the first switch magnet 112 and irradiates the upward surface of the irradiated object 20 to irradiate and sterilize the top surface of the irradiated object 20, and at this time, the other side surfaces of the irradiated object 20 are not irradiated.

[0079] When the first switch magnet 112 is in the third switch time period, the current provided by the controller to the first switch magnet 112 is greater than 0. When the current provided by the controller to the first switch magnet 112 is greater than 0, the first electron beam sequentially passes through the first switch magnet 112 and the first deflection magnet 113 to irradiate and sterilize the left side of the irradiated object 20, and at this time, the other sides of the irradiated object 20 are not irradiated.

[0080] That is, see Fig.10 In one working cycle of the first switch magnet 112, when the first switch magnet 112 is located in the first switch time period, the first electron beam performs irradiation scanning on the right side of the irradiated object 20; when the first switch magnet 112 is located in the second switch time period, the first electron beam performs irradiation scanning on the top surface of the irradiated object 20; when the first switch magnet 112 is located in the third switch time period, the first electron beam performs irradiation scanning on the left side of the irradiated object 20; when the first switch magnet 112 is located in the fourth switch time period, the first electron beam performs irradiation scanning on the top surface of the irradiated object 20 again. In one working cycle of the first switch magnet 112, the right side, top surface, left side, and top surface of the irradiated object 20 are irradiated in sequence, achieving one irradiation sterilization on the left and right sides of the irradiated object 20 and two irradiation sterilization on the top surface of the irradiated object 20. That is, in one working cycle of the first switch magnet 112, irradiation sterilization of three sides of the irradiated object 20 is achieved.

[0081] See also Fig.10 , the magnitude of the first current is half of the peak-to-peak value of the second current.

[0082] Figure 71 is a schematic structural diagram of the first deflection magnet 113 of the irradiation system 10 according to an embodiment of the present invention. Figure 7 The first deflection magnet 113 includes a first yoke 1131, a second yoke 1132 and a first coil 1133. The first yoke 1131 includes a first side surface 1134 and a second side surface that are oppositely disposed, and the first side surface 1134 is disposed close to the first switch magnet 112. The pole surface of the second yoke 1132 is disposed parallel to the pole surface of the first yoke 1131. The first coil 1133 is assembled on the first yoke 1131 and the second yoke 1132 to supply power to the first yoke 1131 and the second yoke 1132.

[0083] In the first embodiment, the angle between the first side surface 1134 and the second side surface is greater than or equal to 0°.

[0084] In the second embodiment, the angle between the first side surface 1134 and the second side surface is less than or equal to 5°.

[0085] In a third implementation, the angle between the first side surface 1134 and the second side surface is greater than or equal to 0° and less than or equal to 5°.

[0086] Fig.13 FIG. 4 is a schematic diagram showing the relationship between the upward tilt angle of the first deflection magnet and the normalized beam current density of an irradiation system according to an exemplary embodiment of the present invention. Fig.13 The upward inclination angle of the first deflection magnet 113 is the angle between the first side surface 1134 and the second side surface. Fig. 9 , the more horizontal the curve is, the better the scanning uniformity is. Fig. 9 Among them, L1 indicates that the upward inclination angle of the first deflection magnet 113 is 0°, L2 indicates that the upward inclination angle of the first deflection magnet 113 is 1°, L3 indicates that the upward inclination angle of the first deflection magnet 113 is 2.5°, L4 indicates that the upward inclination angle of the first deflection magnet 113 is 4°, and L5 indicates that the upward inclination angle of the first deflection magnet 113 is 5°.

[0087] The angle between the first side surface 1134 and the second side surface is less than or equal to 5°. In particular, when the angle between the first side surface 1134 and the second side surface is equal to 2.5°, the electron beams leaving different positions of the first deflection magnet 113 and irradiating the irradiated object 20 can be substantially parallel to each other, thereby achieving uniform irradiation of the electron beam on the irradiated object 20.

[0088] In some embodiments, the first deflection magnet 113 and the second deflection magnet 114 are magnets of the same structure, that is, the first deflection magnet 113 and the second deflection magnet 114 have the same deflection angle for the electron beams entering therein.

[0089] The controller is configured to supply a constant current to the first deflection magnet 113 and the second deflection magnet 114 to deflect the first electron beam.

[0090] Figure 5 FIG. 1 is a front view of the first accelerator 110 of the irradiation system 10 according to an embodiment of the present invention in a working state. Figure 5 , the first deflection magnet 113 and the second deflection magnet 114 deflect the partial area electron beam respectively. The first electron beam is deflected to different transmission paths at different times through the first switch magnet 112, and the first electron beam on different deflection paths is scanned. After the first electron beam is deflected and scanned, it can be divided into three areas: the first area electron beam 31, the second area electron beam 32 and the third area electron beam 33. The transmission path of the first area electron beam 31 passes through the first deflection magnet 113, and the transmission path of the third area electron beam 33 passes through the second deflection magnet 114. In the following embodiments, the first area electron beam 31, the second area electron beam 32 and the third area electron beam 33 are sequentially irradiated on the irradiated object 20 from left to right for illustration. However, the protection scope of the present invention is not limited, and the relative positions of the first area electron beam 31, the second area electron beam 32 and the third area electron beam 33 can be arranged from left to right, from right to left, or in a non-sequential manner.

[0091] The first region electron beam 31 is deflected to different positions on the left side of the first switch magnet 112 and then incident on the first deflection magnet 113 at different angles and different positions. The incident angle of the first region electron beam 31 is larger as it is closer to the magnetic field edges on both sides of the first deflection magnet 113. Since the thickness of the first deflection magnet 113 gradually decreases along the scanning direction of the first region electron beam 31, the deflection angle of the first region electron beam 31 gradually decreases along the scanning direction. The first region electron beam 31 can be uniformly irradiated to the irradiated object 20 by controlling the angle between the first side surface 1134 and the second side surface. After leaving the first deflection magnet 113, the first region electron beam 31 irradiates the surface of the irradiated object 20 facing the left side. The thickness of the first deflection magnet 113 is the distance between the first side surface 1134 and the second side surface.

[0092] The second-region electron beam 32 is not deflected by the deflection magnet, and thus can irradiate the upward surface of the irradiated object 20 without changing its route; the third-region electron beam 33 is deflected by the second deflection magnet 114, and after leaving the second deflection magnet 114, irradiates the right-facing surface of the irradiated object 20, so as to achieve irradiation sterilization of the three left and right surfaces of the irradiated object 20 by the first accelerator 110.

[0093] In some embodiments, the first accelerator 110 and the second accelerator 120 have the same structure.

[0094] See also Figure 1 The irradiation device 100 further includes a microwave power source 130 , a power divider 140 , a first waveguide 151 and a second waveguide 152 .

[0095] The microwave power source 130 generates microwave power. The power splitter 140 is connected to the microwave power source 130. The first accelerator 110 is connected to the power splitter 140 via a first waveguide 151, and the second accelerator 120 is connected to the power splitter 140 via a second waveguide 152, so that microwave power is fed to the first accelerator 110 and the second accelerator 120 simultaneously.

[0096] See also Figure 1 , the transport mechanism 200 further includes a first steering structure 230. The first steering structure 230 is docked with the output end of the first transport section 210 and the input end of the second transport section 220, respectively, so as to transport the irradiated object 20 from the first transport section 210 to the second transport section 220. The first steering structure 230 is used to push the irradiated object 20 on the first transport section 210 to the second transport section 220. The first steering structure 230 may include a plurality of balls that can rotate 360°, and the balls are arranged in rows and columns. When the irradiated object 20 is transported to the output end of the first transport section 210, the controller controls the balls to rotate around the left and right axes (the direction of the first transport section 210) to transport the irradiated object 20 to the first steering structure 230; when the irradiated object 20 is completely located on the first steering structure 230, the controller controls the balls to rotate around the front and rear axes (the direction of the first transport section 210) to transport the irradiated object 20 to the input end of the second transport section 220. That is, the first steering structure 230 does not rotate the object 20 but only changes the transport direction of the object 20 , so that the object 20 changes from the front-to-back direction in the first transport section 210 to the left-to-right direction in the second transport section 220 .

[0097] In some embodiments, the first accelerator 110 is located above the object 20, and the second accelerator 120 is located below the object 20. That is, the upper left and right surfaces of the object 20 are irradiated and sterilized in the first irradiation zone, and the lower left and right surfaces of the object 20 are irradiated and sterilized in the second irradiation zone.

[0098] See also Figure 1 The transport mechanism 200 further includes a third transport section 240. The third transport section 240 is located downstream of the second transport section 220 and is used to transport the irradiated object 20 away from the second irradiation area. The third transport section 240 and the second transport section 220 have the same transport direction. There is a gap between the second transport section 220 and the third transport section 240 to avoid the second electron beam generated by the second accelerator 120 irradiating the irradiated object 20.

[0099] The second electron beam generated by the second accelerator 120 irradiates the object 20 from below the transport mechanism 200 . To avoid the second electron beam, a gap is provided between the third transport section 240 and the second transport section 220 , so that the second electron beam irradiates the lower left and right surfaces of the object 20 .

[0100] In other embodiments, the first accelerator 110 is located below the object 20, and the second accelerator 120 is located above the object 20. At this time, the third transport section 240 is upstream of the first transport section 210 and there is a gap between the third transport section 240 and the first transport section 210 to avoid the first electron beam.

[0101] See also Figure 1 The transport mechanism 200 further includes a fourth transport section 250 and a second steering structure 260. The fourth transport section 250 is located downstream of the third transport section 240 and is used to output the irradiated object 20. The second steering structure 260 is docked with the output end of the third transport section 240 and the input end of the fourth transport section 250, respectively, so as to transport the irradiated object 20 from the third transport section 240 to the fourth transport section 250. The transport direction of the fourth transport section 250 is perpendicular to the transport direction of the third transport section 240.

[0102] In some embodiments, the second steering structure 260 and the first steering structure 230 may adopt the same structure to change the transport direction of the irradiated object 20 .

[0103] In some embodiments, the transport mechanism 200 is a Z-shaped structure.

[0104] Figure 4 is a front view of an irradiation device 100 of an irradiation system 10 according to an embodiment of the present invention. Figure 4 The first accelerator 110 includes an electron gun 115, a first focusing coil 1161, a second focusing coil 1162, an accelerating tube 117, an accelerating tube adapter 118, a vacuum maintaining system 119, a first scanning box 111, and a microwave absorbing load 125, which are connected in sequence.

[0105] The electron gun 115 emits electrons, and the electron bunch is accelerated in the accelerator tube. During the acceleration process, the electron bunch is focused by the first focusing coil 1161 and the second focusing coil 1162. The vacuum maintenance system 119 is used to maintain the vacuum state in the first accelerator 110. The microwave power from the microwave power source 130 is respectively sent to the first accelerator 110 and the second accelerator 120 through the first waveguide 151 and the second waveguide 152.

[0106] The vacuum maintenance system 119 includes a vacuum exhaust pipe 1193, a first titanium pump 1191, and a second titanium pump 1192. The two ends of the vacuum exhaust pipe 1193 are respectively connected to the accelerating tube adapter 118 and the scanning box to ensure the vacuum state in the first accelerator 110. The first titanium pump 1191 is installed at the microwave inlet of the accelerating tube 117, and the second titanium pump 1192 is detachably connected to the first scanning box 111 through a flange.

[0107] The microwave absorption load 125 is connected to the accelerating tube 117. At the end of the accelerating tube 117, the remaining microwave power is led to the microwave absorption load 125.

[0108] In some embodiments, sterilization can be performed using an irradiation system 10, which includes an irradiation device 100 and a transportation mechanism 200. The irradiation device 100 includes a controller, a first accelerator 110, and a second accelerator 120. The transportation mechanism 200 includes a first transportation section 210 and a second transportation section 220.

[0109] Fig.11 is a flow chart of a method for sterilization using the irradiation system 10 according to an embodiment of the present invention. Fig.11 The method of sterilizing by using the irradiation system 10 is applied to the irradiation system 10. The method comprises the following steps:

[0110] S1101 : placing the object 20 to be irradiated on the transport mechanism 200 .

[0111] S1102 : The controller controls the first transport section 210 to transport the object 20 to be irradiated to the first irradiation area formed by the first accelerator 110110 .

[0112] S1103: The controller controls the first accelerator 110 to emit a first electron beam to irradiate and sterilize a portion of the surface of the irradiated object 20 on the first transport section 210 in the first irradiation area.

[0113] S1104 : After irradiation and sterilization in the first irradiation zone, the controller controls the transport mechanism 200 to transport the irradiated object 20 to the second irradiation zone formed by the second accelerator 120 .

[0114] S1105: The controller controls the second accelerator 120 to emit a second electron beam to irradiate and sterilize the remaining surface of the irradiated object 20 on the second transport section 220 in the second irradiation area.

[0115] S1106 : After sterilization in the second irradiation zone, the controller controls the transport mechanism 200 to output the irradiated object 20 .

[0116] The transport direction of the second transport section 220 is perpendicular to the transport direction of the first transport section 210 , and the first accelerator 110 and the second accelerator 120 are respectively located above and below the object to be irradiated 20 .

[0117] The transport mechanism 200 includes a first turning structure 230 . Fig.12 FIG. 1 is a flow chart of a method for sterilizing using an irradiation system 10 according to another embodiment of the present invention. Fig.12 The controller controls the transport mechanism 200 to transport the irradiated object 20 to the second irradiation area, including the following steps:

[0118] S1204 : the controller controls the first diverting structure 230 to transport the irradiated object 20 at the output end of the first transport section 210 to the second transport section 220 .

[0119] S1205: The second transport section 220 transports the object 20 to be irradiated to the second irradiation area.

[0120] See also Figure 1 , the first accelerator 110 is located above the irradiated object 20, and the second accelerator 120 is located below the irradiated object 20. The transport mechanism 200 also includes a third transport section 240, and the second transport section 220 is located downstream of the second transport section 220 and has the same transport direction as the second transport section 220. Referring to the figure, the controller controls the transport mechanism 200 to output the irradiated object 20, including the following steps:

[0121] S1207: The controller controls the second transport section 220 to transport the irradiated object 20 to the input end of the third transport section 240, and the third transport section 240 transports the irradiated object 20 away from the second irradiation area.

[0122] See also Figure 1 The transport mechanism 200 further includes a fourth transport section 250 and a second steering structure 260. The fourth transport section 250 is located downstream of the third transport section 240. The second steering structure 260 is docked with the output end of the third transport section 240 and the input end of the fourth transport section 250. Referring to the figure, the controller controls the transport structure to output the irradiated object 20, and further includes the following steps:

[0123] S1208 : the controller controls the second diverting structure 260 to transport the irradiated object 20 at the output end of the third transport section 240 to the fourth transport section 250 .

[0124] S1209 : The controller controls the fourth transport section 250 to output the irradiated object 20 .

[0125] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0126] By arranging the irradiation device 100 and the transportation mechanism 200 in the irradiation system 10, the irradiation sterilization of all surfaces of the irradiated object 20 is realized through the cooperation of the two, and the irradiation of all surfaces can be achieved without turning over and moving the irradiated object 20, thereby reducing the risk of cross infection; on the other hand, the electron beam with strong penetrating ability is used to directly or indirectly exert biological effects on the organisms inside and outside the surface of the irradiated object 20, so as to achieve the purpose of killing or sterilizing the organisms inside and outside the surface of the irradiated object 20, and will not cause harm to the atmospheric environment.

[0127] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "first", "second", "third", "fourth", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0128] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0129] It should also be noted that, unless otherwise clearly specified and limited, the terms "disposed", "installed", and "connected" should be understood in a broad sense, for example, it 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0130] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", "in a first embodiment", "in a second embodiment", or "in a third embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0131] Although the present invention is described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify the implementation of the present invention and should not be construed as limiting the present invention. In order to clearly show the details of each component, the components in the drawings are not drawn to scale, so the proportions of the components in the drawings should not be regarded as a limitation.

[0132] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined in the claims and their equivalents.

Claims

1. An irradiation system, characterized in that: include: An irradiation device (100), the irradiation device (100) comprising: A first accelerator (110) includes a first switch magnet (112) for deflecting and scanning a first electron beam generated by the first accelerator (110) to form a first irradiation area for irradiating a portion of the surface of an irradiated object (20); A second accelerator (120) includes a second switch magnet (122) for deflecting and scanning a second electron beam generated by the second accelerator (120) to form a second irradiation area for irradiating the remaining surface of the irradiated object (20); A transport mechanism (200), the transport mechanism (200) comprising: a first transport section (210), the first transport section (210) being used to transport the object to be irradiated (20) to the first irradiation area; a second transport section (220), the second transport section (220) being used to transport the irradiated object (20) to the second irradiation area; The transport direction of the second transport section (220) is perpendicular to the transport direction of the first transport section (210), and the first electron beam generated by the first accelerator (110) can irradiate and sterilize the surface of the irradiated object (20) in the three directions of upward, left and right. Subsequently, the irradiated object (20) is transported from the first transport section (210) to the second transport section (220). After the irradiated object (20) is transported to the second transport section (220), the direction of the irradiated object (20) changes, and the front-to-back direction of the irradiated object (20) on the first transport section (210) changes to the left-to-right direction on the second transport section (220). The left-right direction of the transport section (210) changes to the front-back direction of the second transport section (220); when the second transport section (220) transports the irradiated object (20) to the second irradiation area, the second electron beam generated by the second accelerator (120) can irradiate and sterilize the surfaces of the irradiated object (20) in the three directions of downward, left and right. The first accelerator (110) and the second accelerator (120) are respectively located above and below the irradiated object (20), the first accelerator (110) is located above the irradiated object (20), and the second accelerator (120) is located below the irradiated object (20), so as to achieve irradiation and sterilization of six surfaces of the irradiated object (20); A first scanning box (111) is installed at the end of the first accelerator (110), the first switching magnet (112) is installed on the first scanning box (111), and a symmetrically arranged first deflection magnet (113) and a second deflection magnet (114) are installed on the first scanning box (111) downstream of the first switching magnet (112) to irradiate a portion of the surface of the irradiated object (20); and A second scanning box (121) is installed at the end of the second accelerator (120), the second switch magnet (122) is installed on the first scanning box (111), and a symmetrically arranged third deflection magnet (123) and a fourth deflection magnet (124) are installed on the second scanning box (121) downstream of the second switch magnet (122) to irradiate the remaining surface of the irradiated object (20); The transport mechanism (200) further comprises: A first steering structure (230) is connected to the output end of the first transport section (210) and the input end of the second transport section (220) respectively, so as to transport the irradiated object (20) from the first transport section (210) to the second transport section (220).

2. The irradiation system according to claim 1, characterized in that: The first switch magnet (112) is an H-type secondary magnet; and / or The second switch magnet (122) is an H-type secondary magnet.

3. The irradiation system according to claim 1, characterized in that: The irradiation system further comprises: A controller is configured to provide a superimposed current obtained by superimposing a plurality of currents with different frequencies to the first switch magnet (112) and the second switch magnet (122), so as to achieve deflection and scanning of the first electron beam.

4. The irradiation system according to claim 3, characterized in that: The controller provides a periodically changing first current to the first switch magnet (112) to deflect the first electron beam; A second current having a triangular wave waveform is superimposed on the first current to scan the first electron beam.

5. The irradiation system according to claim 4, characterized in that: The period of the first current is a first period, and the first period is sequentially divided into a first switching time period, a second switching time period, a third switching time period and a fourth switching time period; Wherein, the first switching time period is equal to the third switching time period; The second switching time period is equal to the fourth switching time period.

6. The irradiation system according to claim 5, characterized in that: When the first switch magnet (112) is in the first switch time period, the current provided by the controller to the first switch magnet (112) is greater than 0; When the first switch magnet (112) is in the second switch time period and the fourth switch time period, the current provided by the controller to the first switch magnet (112) is equal to 0; When the first switch magnet (112) is in the third switch time period, the controller provides a current less than 0 to the first switch magnet (112).

7. The irradiation system according to claim 1, characterized in that: The first deflection magnet (113) comprises: A first magnetic yoke (1131), the first magnetic yoke (1131) comprising a first side surface (1134) and a second side surface that are arranged opposite to each other, the first side surface (1134) being arranged close to the first switch magnet; A second magnetic yoke (1132), wherein a pole surface of the second magnetic yoke (1132) is arranged in parallel with a pole surface of the first magnetic yoke (1131); A first coil (1133), the first coil (1133) being mounted on the first magnetic yoke (1131) and the second magnetic yoke (1132) to supply power to the first magnetic yoke (1131) and the second magnetic yoke (1132); wherein the angle between the first side surface (1134) and the second side surface is greater than or equal to 0°; and / or The angle between the first side surface (1134) and the second side surface is less than or equal to 5°.

8. The irradiation system according to claim 7, characterized in that: The first deflection magnet (113) and the second deflection magnet (114) are magnets of the same structure.

9. The irradiation system according to claim 1, characterized in that: The first accelerator (110) and the second accelerator (120) have the same structure.

10. The irradiation system according to claim 1, characterized in that: The irradiation device (100) further comprises: A microwave power source (130), wherein the microwave power source (130) generates microwave power; A power divider (140), the power divider (140) being connected to the microwave power source (130); The first accelerator (110) is connected to the power divider (140) via a first waveguide (151), and the second accelerator (120) is connected to the power divider (140) via a second waveguide (152), so that the microwave power is fed into the first accelerator (110) and the second accelerator (120) simultaneously.

11. The irradiation system according to claim 1, characterized in that: The transport mechanism (200) further comprises: a third transport section (240), the third transport section (240) being located downstream of the second transport section (220) and being used to transport the irradiated object (20) away from the second irradiation area, the third transport section (240) and the second transport section (220) having the same transport direction; There is a gap between the second transport section (220) and the third transport section (240) to prevent the second electron beam generated by the second accelerator (120) from irradiating the irradiated object (20).

12. The irradiation system according to claim 11, characterized in that The transport mechanism (200) further comprises: a fourth transport section (250), the fourth transport section (250) being located downstream of the third transport section (240) and being used to output the irradiated object (20) after irradiation; A second steering structure (260), wherein the second steering structure (260) is respectively docked with the output end of the third transport section (240) and the input end of the fourth transport section (250) to transport the irradiated object (20) from the third transport section (240) to the fourth transport section (250).

13. A method for sterilization using the irradiation system according to claim 1, characterized in that: The method for sterilizing by using an irradiation system is applied to the irradiation system, the irradiation system includes a controller, and the sterilization method includes the following steps: placing an object to be irradiated (20) on the transport mechanism (200); The controller controls the first transport section (210) to transport the object to be irradiated (20) to a first irradiation zone formed by the first accelerator (110); The controller controls the first accelerator (110) to emit a first electron beam to irradiate and sterilize a portion of the surface of the irradiated object (20) on the first transport section (210) in the first irradiation area; After the first irradiation zone is irradiated and sterilized, the controller controls the transport mechanism (200) to transport the irradiated object (20) to a second irradiation zone formed by the second accelerator (120).

14. The method for sterilization using an irradiation system according to claim 13, characterized in that: The controller controls the transport mechanism (200) to transport the irradiated object (20) to the second irradiation area, comprising the following steps: The controller controls the first steering structure (230) to transport the irradiated object (20) at the output end of the first transport section (210) to the second transport section (220); The second transport section (220) transports the object to be irradiated (20) to the second irradiation area.

15. The method for sterilization using an irradiation system according to claim 13, characterized in that: The transport mechanism (200) further comprises a third transport section (240), wherein the third transport section (240) is located downstream of the second transport section (220) and has the same transport direction as the second transport section (220); the controller controls the transport mechanism (200) to output the irradiated object (20) comprising the following steps: The controller controls the second transport section (220) to transport the irradiated object (20) to the input end of the third transport section (240), and the third transport section (240) transports the irradiated object (20) away from the second irradiation area.

16. The method for sterilization using an irradiation system according to claim 15, characterized in that: The transport mechanism (200) further comprises a fourth transport section (250) and a second steering structure (260), wherein the fourth transport section (250) is located downstream of the third transport section (240), and the second steering structure (260) is docked with an output end of the third transport section (240) and an input end of the fourth transport section (250) respectively; The controller controls the transport mechanism (200) to output the irradiated object (20) further comprising the following steps: The controller controls the second steering structure (260) to transport the irradiated object (20) at the output end of the third transport section (240) to the fourth transport section (250); The controller controls the fourth transport section (250) to output the irradiated object (20).

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