Irradiation sterilization system

Abstract

The present disclosure provides an irradiation sterilization system, comprising: a shielding device, comprising a conveying device shielding body, the conveying device shielding body having a serpentine channel, the serpentine channel including three or more return bends connected to each other, one of the three or more return bends being an irradiation bend, the irradiation bend including an irradiation portion, at least one return bend being provided at each end of the irradiation bend; a conveying device, configured to convey an article to be irradiated from one end port of the serpentine channel to the other end port of the serpentine channel; and an irradiation device, comprising a ray emitting portion, the ray emitting portion being configured to emit a irradiation beam toward the irradiation portion to irradiate the article to be irradiated conveyed by the conveying device through the irradiation portion. The irradiation sterilization system can effectively realize the shielding protection of the irradiation beam.

Description

Technical Field

[0001] The present disclosure relates to the technical field of irradiation sterilization, and particularly relates to an irradiation sterilization system. Background Art

[0002] The electron beam irradiation sterilization technology utilizes the electron beam generated by a linear electron accelerator or the X-ray converted from the electron beam to interact with matter. The ionizing radiation generated by the high-energy electron beam can destroy the structures of proteins and DNA / RNA, rendering pathogens inactive. Sterilization and disinfection by a large dose of ionizing radiation have the characteristics of being safe, fast, efficient, and causing less change to the surface properties of materials. Its typical application is the paper mail sterilization system, which can kill various pathogens such as germs, spores, and viruses hidden therein. Therefore, inactivating items by radiation can, to a certain extent, prevent the spread of pathogens through objects and other media.

[0003] Irradiation sterilization has the characteristics of being safe, fast, efficient, and causing less change to the surface properties of materials, and is widely used in the food processing industry, the pharmaceutical industry, and import and export quarantine agencies. According to different types of radiation, irradiation sterilization is divided into two types: X / γ rays and electron beams. The former is mostly generated by radioactive isotopes, and the latter generally requires the use of an electron accelerator to generate. Compared with the relatively complex management and use measures of isotope radiation sources, electron accelerators have better controllability, and the radiation disappears after power failure. Generally speaking, radiation sterilization systems using electron accelerators have the advantages of being flexible and easy to use and having a larger dose, so they have a broader application prospect.

[0004] Generally speaking, electron accelerator sterilization equipment is bulky and usually operates in a fixed plant, that is, in the mode of an irradiation station. Due to the increasingly wide application of irradiation sterilization and disinfection, there is also a need for flexible mobile deployment of the irradiation sterilization system, which requires the miniaturization of the equipment volume. Summary of the Invention

[0005] The purpose of the present disclosure is to provide an irradiation sterilization system, including:

[0006] A shielding device, including a conveying device shield, within which there is a serpentine channel. The serpentine channel includes three or more turning bends connected to each other. One of the three or more turning bends is an irradiation bend, and the irradiation bend includes an irradiation part. At least one of the turning bends is provided at each end of the irradiation bend;

[0007] A conveying device configured to convey the items to be irradiated from one end port of the serpentine channel to the other end port within the serpentine channel; and

[0008] An irradiation device includes a ray emission part, and the ray emission part is configured to emit an irradiation ray beam towards the irradiation part to irradiate an article to be irradiated passing through the irradiation part and conveyed by the conveying device.

[0009] In some embodiments, the three or more turning channels include right-angle turning channels, curved turning channels or V-shaped turning channels.

[0010] In some embodiments, the serpentine channel includes:

[0011] A first channel segment, including the irradiation part;

[0012] A second channel segment, with the first ends of two second channel segments respectively connected to both ends of the first channel segment, and the first channel segment and the first ends of the two second channels form a turning channel;

[0013] A third channel segment, with the first ends of two third channel segments respectively connected to the second ends of the two second channel segments; and

[0014] A fourth channel segment, with the first ends of two fourth channel segments respectively connected to the second ends of two third channel segments, and each third channel segment and the second end of the corresponding second channel segment and the first end of the corresponding fourth channel segment form a turning channel.

[0015] In some embodiments,

[0016] The second channel segment is perpendicular to the first channel segment; and / or

[0017] The third channel segment is perpendicular to the second channel segment; and / or

[0018] The fourth channel segment is perpendicular to the third channel segment.

[0019] In some embodiments, the serpentine channel further includes two fifth channel segments, with the first ends of two fifth channel segments respectively connected to the second ends of two fourth channel segments, and the second ends of the fifth channel segments include the ports of the serpentine channel.

[0020] In some embodiments, the shielding device includes a plurality of shielding modules, and at least some of the shielding modules are detachably connected.

[0021] In some embodiments, at least one of the shielding modules includes:

[0022] A surrounding plate;

[0023] A shielding main body fixedly arranged with the surrounding plate; and

[0024] A connecting structure is provided on the shroud and / or the shielding body and is configured to be detachably connected to other shielding modules.

[0025] In some embodiments,

[0026] the shielding body is fixedly connected to the shroud by casting; or

[0027] the shielding body is detachably connected to the shroud.

[0028] In some embodiments, the connected shielding modules overlap.

[0029] In some embodiments, the plurality of shielding modules include a plurality of channel shielding modules for forming the shielding body of the conveying device, and the shielding effectiveness of each of the channel shielding modules gradually decreases along the extending direction of the serpentine channel from the irradiation portion to the end of the serpentine channel.

[0030] In some embodiments, the plurality of channel shielding modules include:

[0031] a plurality of side shielding modules forming the side walls of the serpentine channel; and

[0032] a plurality of top shielding modules forming the top wall of the serpentine channel, connected to the tops of the side shielding modules, and at least part of the top shielding modules are detachably connected to the side shielding modules.

[0033] In some embodiments, all of the plurality of channel shielding modules are flat plate-shaped shielding modules.

[0034] In some embodiments, at least one of the side shielding modules separates two channel segments of the serpentine channel so that the two channel segments share the side shielding module as a side wall.

[0035] In some embodiments, the shielding device further includes a shielding bottom plate, and the shielding body of the conveying device is mounted on the shielding bottom plate.

[0036] In some embodiments, the shielding effectiveness of the shielding bottom plate gradually decreases along the extending direction of the serpentine channel from the irradiation portion to the end of the serpentine channel.

[0037] In some embodiments, the irradiation device is mounted on the shielding body of the conveying device, the shielding device further includes an irradiation shielding body, the ray emitting portion is located within the irradiation shielding body, the shielding device includes a plurality of shielding modules, the plurality of shielding modules include a plurality of irradiation shielding modules constituting the irradiation shielding body, and at least part of the irradiation shielding modules are detachably connected to each other.

[0038] In some embodiments, the ray emission part includes an electron accelerator and a scanning device, and the outer dimension of the irradiation shielding body gradually decreases from the top of the conveying device shielding body towards one end away from the conveying device shielding body.

[0039] In some embodiments, it further includes a cabin, and the conveying device, the irradiation device and the shielding device are all located inside the cabin.

[0040] In some embodiments, it further includes a traveling device, and the cabin is arranged on the traveling device. Based on the irradiation sterilization system provided by the present disclosure, a serpentine channel is arranged inside the conveying device shielding body, and at least one return turning channel is arranged at both ends of the irradiation turning section where the irradiation part of the serpentine channel is located, which can effectively achieve the shielding protection of the irradiation beam of the irradiation sterilization system.

[0041] Through the following detailed description of the exemplary embodiments of the present disclosure with reference to the accompanying drawings, other features and advantages of the present disclosure will become clear. Description of the Drawings

[0042] The drawings described herein are used to provide a further understanding of the present disclosure, and constitute a part of this application. The schematic embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation to the present disclosure. In the drawings:

[0043] Figure 1 It is a three-dimensional structural schematic diagram of the shielding device of the irradiation sterilization system according to the embodiment of the present disclosure.

[0044] Figure 2 It is a cross-sectional structural schematic diagram of the shielding device of the irradiation sterilization system according to the embodiment of the present disclosure from a top-down perspective at the conveying device shielding body.

[0045] Figure 3 It is a cross-sectional structural schematic diagram of the shielding device of the irradiation sterilization system according to the embodiment of the present disclosure from a side perspective.

[0046] Figure 4 It is a cross-sectional structural schematic diagram of the shielding device of the irradiation sterilization system according to the embodiment of the present disclosure from a top-down perspective at the irradiation device shielding body.

[0047] Figure 5 It is a schematic diagram of the principle structure of the irradiation device of the irradiation sterilization system according to the embodiment of the present disclosure.

[0048] Figure 6 It is a schematic diagram of the principle structure of the cabin and the traveling device of the irradiation sterilization system according to the embodiment of the present disclosure. Detailed Embodiments

[0049] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present disclosure or its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present disclosure.

[0050] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0051] In the description of the present disclosure, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without further statement, the above terms have no special meaning and thus cannot be construed as limiting the scope of protection of the present disclosure.

[0052] In the description of the present disclosure, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the scope of protection of the present disclosure; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0053] As Figures 1 to 6 shown, the embodiments of the present disclosure provide an irradiation sterilization system, which includes a shielding device 100, a conveying device 200, and an irradiation device 300.

[0054] The shielding device 100 includes a conveying device shield 110. The conveying device shield 110 has a serpentine channel 111. The serpentine channel 111 includes more than three turning bends connected to each other. One of the more than three turning bends is an irradiation bend, and the irradiation bend includes an irradiation portion. At least one turning bend is provided at each end of the irradiation bend.

[0055] The conveying device 200 is configured to convey the article to be irradiated from one end port P of the serpentine channel 111 to the other end port P within the serpentine channel 111.

[0056] The irradiation device 300 includes a radiation emitting portion configured to emit an irradiation beam B toward the irradiation portion to irradiate the article to be irradiated passing through the irradiation portion conveyed by the conveying device 200. The irradiation device can emit an electron beam. According to the irradiation disinfection mechanism and characteristics, the use of an electron beam can effectively achieve disinfection and inactivation.

[0057] The serpentine channel 111 is provided inside the conveying device shield 110 of the irradiation sterilization system, and at least one turning bend is provided at each end of the irradiation bend where the irradiation portion of the serpentine channel 111 is located, which can effectively achieve the shielding protection of the irradiation beam of the irradiation sterilization system.

[0058] The form of the conveying device 200 is not limited, as long as it can convey the article to be irradiated along the serpentine channel 111 from one port P of the serpentine channel to the other port P. For example, it can be a plate chain conveyor, a roller conveyor, a conveying trolley, a belt conveyor, or a combination thereof.

[0059] The form of the turning bend is not limited, as long as it is a serpentine channel as a whole, and the conveying device shield can attenuate the irradiation beam B itself or the rays derived therefrom, such as the rays transmitted through an object by the irradiation beam B, the rays reflected by an object, or the rays of secondary reflection, etc., to meet the set requirements. The more than three turning bends can be, for example, right-angle turning bends, oblique-angle turning bends, curved turning bends, V-shaped turning bends, or any combination thereof.

[0060] Such as Figure 2As shown, in some embodiments, the serpentine channel 111 includes a first channel segment 1111, a second channel segment 1112, a third channel segment 1113, and a fourth channel segment 1114. The first channel segment 1111 includes an irradiation portion. The first ends of the two second channel segments 1112 are respectively connected to the two ends of the first channel segment 1111, and the first channel segment 1111 and the first ends of the two second channels form a turning bend. The first ends of the two third channel segments 1113 are respectively connected to the second ends of the two second channel segments 1112. The first ends of the two fourth channel segments 1114 are respectively connected to the second ends of the two third channel segments 1113, and a turning bend is formed at the second end of each third channel segment 1113, the corresponding second channel segment 1112, and the first end of the corresponding fourth channel segment 1114.

[0061] The conveying device channel including the combination of the above four channel segments can prevent the direct emission of the irradiation beam B and its secondary rays, thereby having a good shielding effect.

[0062] As Figure 2 shown, in some embodiments, the second channel segment 1112 is perpendicular to the first channel segment 1111. The third channel segment 1113 is perpendicular to the second channel segment 1112. The fourth channel segment 1114 is perpendicular to the third channel segment 1113. This setting facilitates the design and installation of the conveying device shield, and also facilitates the selection and arrangement of the conveying device, which is conducive to reducing the space occupied by the conveying device shield and making the structure of the irradiation sterilization system more compact.

[0063] As Figure 2 shown, in some embodiments, the serpentine channel 111 further includes two fifth channel segments 1115. The first ends of the two fifth channel segments 1115 are respectively connected to the second ends of the two fourth channel segments 1114. The second end of the fifth channel segment 1115 includes the port P of the serpentine channel 111. On the one hand, the fifth channel segment 1115 is conducive to further attenuating the ray intensity output from the port P of the serpentine channel 111. On the other hand, it can reasonably arrange the position and direction of the articles to be irradiated entering and exiting the serpentine channel.

[0064] The fifth channel segment 1115 can be Figure 2 shown as a straight channel, but the present disclosure is not limited thereto. For example, in an embodiment not shown, the fifth channel segment can be a curved and / or bent channel.

[0065] As Figures 2 to 4 shown, in some embodiments, the shielding device 100 includes a plurality of shielding modules. At least some of the shielding modules are detachably connected. This setting is conducive to selecting shielding modules with appropriate shielding efficiency for different positions according to the shielding requirements, thereby reasonably planning the distribution of shielding materials, reducing consumables, reducing weight, reducing space occupation, and making the structure of the irradiation sterilization system more compact.

[0066] In some embodiments, the plurality of shielding modules include a plurality of channel shielding modules for forming the conveying device shield 110, and the shielding effectiveness of each channel shielding module gradually decreases from the irradiation section to the end of the serpentine channel 111 along the extending direction of the serpentine channel 111. This configuration facilitates the rational planning of the distribution of the shielding material of the conveying device shield 110, reduces consumables, lightens the weight, reduces the space occupation, and makes the structure of the irradiation sterilization system more compact.

[0067] As Figure 1 and Figure 2 shown, in some embodiments, the plurality of channel shielding modules include a plurality of side shielding modules and a plurality of top shielding modules. The plurality of side shielding modules form the side walls of the serpentine channel 111. The plurality of top shielding modules form the top wall of the serpentine channel 111, are connected to the tops of the side shielding modules, and at least some of the top shielding modules are detachably connected to the side shielding modules. This configuration facilitates the processing and manufacturing of the channel shielding modules on the one hand, and also facilitates the maintenance and repair of the conveying device on the other hand.

[0068] As Figures 2 to 4 shown, in some embodiments, at least one shielding module includes a surrounding plate 110A, a shielding main body 110B, and a connecting structure 110C. The shielding main body 110B is fixedly arranged with the surrounding plate 110A. The connecting structure 110C is arranged on the surrounding plate 110A and / or the shielding main body 110B and is configured to be detachably connected to other shielding modules.

[0069] This setting facilitates the design, manufacture, and installation of the shielding device 110. The surrounding plate 110A can form the main frame of the shielding device, facilitating the positioning and overall shaping of the shielding device. The surrounding plate 110A is made of, for example, a steel plate. The thickness of the shielding main body 110B can be set according to the position where the shielding module is located to obtain the shielding effectiveness required for that position. The shielding main body 110B is made of, for example, lead. The shielding main body 110B can be fixedly connected to the surrounding plate 110A by casting; or the shielding main body 110B is detachably connected to the surrounding plate 110A.

[0070] As Figures 2 to 4 shown, for one shielding module, the surrounding plate 110A can form a flat plate or can enclose a receiving portion. For the surrounding plate 110A that forms a flat plate, the shielding main body 110B can be detachably or non-detachably installed on one or both sides of the flat plate. For example, the shielding main body 110B can be fittingly installed on the surrounding plate 110A through threaded connectors, snap-fit parts, etc. For the surrounding plate 110A that encloses a receiving portion, the manufacturing material of the shielding body 110B can be melted and poured into the receiving portion.

[0071] As Figures 1 to 2As shown, among them, multiple channel shielding modules are all flat shielding modules. The flat shielding modules are conducive to design, layout, processing and manufacturing, and are conducive to arranging serpentine channels in a smaller space, thereby facilitating the miniaturization of the irradiation sterilization system.

[0072] As Figures 1 to 2 shown, at least one side shielding module separates two channel segments of the serpentine channel 111, so that the two channel segments share the side shielding module as a side wall. This configuration is conducive to reducing the space occupied by the conveying device shielding body 110 and making the structure of the irradiation sterilization system more compact.

[0073] The shielding device 100 further includes a shielding bottom plate 130, and the conveying device shielding body 110 is installed on the shielding bottom plate 130. Setting the shielding bottom plate 130 can shield the radiation at the bottom of the serpentine channel 111, which is conducive to expanding the use range of the irradiation sterilization device and facilitating the replacement of the working location of the irradiation sterilization device.

[0074] As Figure 1 shown, the irradiation device 300 is installed outside the conveying device shielding body 110. The shielding device 100 further includes an irradiation shielding body 120, and the ray emitting part is located inside the irradiation shielding body 120. The shielding device 100 includes multiple shielding modules, and the multiple shielding modules include multiple irradiation shielding modules that constitute the irradiation shielding body 120, and at least some of the irradiation shielding modules are detachably connected.

[0075] As Figure 5 shown, in some embodiments, the ray emitting part includes an electron accelerator 310 and a scanning device 320, and the external dimension of the irradiation shielding body 120 gradually decreases from the top of the conveying device shielding body 110 towards one end away from the conveying device shielding body 110.

[0076] Since the irradiation shielding body 120 is designed to include multiple irradiation shielding modules, modules of reasonable sizes can be set for different parts of each ray emitting device, which is conducive to saving shielding materials and reducing the overall weight of the irradiation sterilization system.

[0077] In some embodiments, as Figure 6 shown, the irradiation sterilization system further includes a cabin 400, and the conveying device 200, the irradiation device 300 and the shielding device 100 are all located inside the cabin 400. This configuration is conducive to the overall transfer and deployment of the irradiation sterilization system and improves the use flexibility.

[0078] In some embodiments, as Figure 6 shown, the irradiation sterilization system further includes a traveling device 500, and the cabin 400 is arranged on the traveling device 500. The traveling device 500 is, for example, an automatic walking transport vehicle, an automobile or a trailer, etc. This configuration improves the transfer performance of the irradiation sterilization system and further improves the use flexibility.

[0079] The following will combine with Figures 1 to 6 to elaborate in detail on the irradiation sterilization system of the present disclosure.

[0080] As Figures 1 to 6 shown, the present disclosure provides an irradiation sterilization system, which includes a shielding device 100, a conveying device 200, an irradiation device 300, a cabin 400, and a traveling device 500. The cabin 400 is installed on the traveling device 500, and the shielding device 100, the conveying device 200, and the irradiation device 300 are all installed inside the cabin 400.

[0081] The shielding device 100 includes a conveying device shield 110, an irradiation device shield 120, and a shielding bottom plate 130.

[0082] The conveying device shield 110 has a serpentine channel 111 inside. The conveying device shield 110 is installed on the shielding bottom plate 130, so that the shielding bottom plate 130 closes the bottom of the serpentine channel 111.

[0083] The conveying device shield 110 has a serpentine channel 111 inside. The serpentine channel 111 includes more than three turning bends connected to each other. One of the more than three turning bends is an irradiation bend, and the irradiation bend includes an irradiation part. At least one turning bend is provided at each end of the irradiation bend. Figures 1 to 6 In the shown embodiment, the serpentine channel 111 includes three turning bends, and the irradiation bend is the turning bend at the middle position among the three turning bends, and the irradiation part is located in the middle of the irradiation bend.

[0084] The conveying device 200 is configured to convey the articles to be irradiated from one end port P to the other end port P of the serpentine channel 111 inside the serpentine channel 111. In this embodiment, the conveying device 200 is a plate chain conveying device.

[0085] The irradiation device 300 includes a ray emitting part, and the ray emitting part is configured to emit an irradiation ray bundle B towards the irradiation part to irradiate the articles to be irradiated passing through the irradiation part conveyed by the conveying device 200. The irradiation device shield 120 is installed above the irradiation device shield 120 and is located at the middle position of the serpentine channel 111. The ray emitting part of the irradiation device 300 is installed inside the irradiation device shield 120.

[0086] The serpentine channel is arranged inside the conveying device shield 110 of the irradiation sterilization system, and at least one turning bend is provided at each end of the irradiation bend where the irradiation part of the serpentine channel is located, which can effectively realize the shielding protection of the irradiation ray bundle B of the irradiation sterilization system.

[0087] As Figure 1As shown, in this embodiment, the three turning bends of the serpentine channel 111 are all right-angle turning bends. The irradiation beam bundle B emitted by the ray emitting part irradiates the middle of the serpentine channel 111, and the part of the serpentine channel 111 irradiated by the irradiation beam bundle B is the irradiation part.

[0088] As Figure 2 shown, the serpentine channel 111 includes a first channel section 1111, two second channel sections 1112 respectively located at both ends of the first channel section 1111, two third channel sections 1113 respectively located at the ends of the two second channel sections 1112 away from the first channel section 1111, two fourth channel sections 1114 respectively located at the ends of the two third channel sections 1113 away from the second channel section 1112, and two fifth channel sections 1115 respectively located at the ends of the two fourth channel sections 1114 away from the third channel section 1113.

[0089] The first channel section 1111 includes the aforementioned irradiation part. The first ends of the two second channel sections 1112 are respectively connected to both ends of the first channel section 1111, and the first channel section 1111 and the first ends of the two second channels form a turning bend. The first ends of the two third channel sections 1113 are respectively connected to the second ends of the two second channel sections 1112. The first ends of the two fourth channel sections 1114 are respectively connected to the second ends of the two third channel sections 1113, and each third channel section 1113 and the second end of the corresponding second channel section 1112 and the first end of the corresponding fourth channel section 1114 form a turning bend. The first ends of the two fifth channel sections 1115 are respectively connected to the second ends of the two fourth channel sections 1114, and the second ends of the fifth channel sections 1115 include the port P of the serpentine channel 111.

[0090] Wherein every two connected channel sections are perpendicular to each other. This setting facilitates the design and installation of the conveying device shield, and also facilitates the selection and arrangement of the conveying device, which is beneficial to reducing the space occupied by the conveying device shield and making the structure of the irradiation sterilization system compact.

[0091] The shielding device 100 includes a plurality of shielding modules. At least some of the shielding modules are detachably connected. The connected shielding modules are lap-connected to prevent radiation leakage at the connection.

[0092] The plurality of shielding modules include a plurality of channel shielding modules for forming the conveying device shield 110, and the shielding effectiveness of each channel shielding module gradually decreases from the irradiation part to the end of the serpentine channel 111 along the extending direction of the serpentine channel 111. As Figure 1 and Figure 2As shown, in some embodiments, the plurality of channel shielding modules include a plurality of side shielding modules and a plurality of top shielding modules. The plurality of side shielding modules form the side walls of the serpentine channel 111. The plurality of top shielding modules form the top wall of the serpentine channel 111, are connected to the top ends of the side shielding modules, and at least some of the top shielding modules are detachably connected to the side shielding modules.

[0093] Among them, the shielding effectiveness of both the plurality of side shielding modules and the plurality of top shielding modules gradually decreases from the irradiation part to the end of the serpentine channel 111 along the extending direction of the serpentine channel 111. In some embodiments, the shielding effectiveness of each shielding module mainly depends on the thickness adjustment of the shielding body.

[0094] As Figures 1 to 2 shown, the plurality of channel shielding modules are all flat plate-shaped shielding modules. The flat plate-shaped shielding modules are beneficial for design, layout, processing and manufacturing, and are beneficial for arranging the serpentine channel in a smaller space, thereby facilitating the miniaturization of the irradiation sterilization system.

[0095] As Figure 2 shown, the plurality of side shielding modules include a first side shielding module 1121, a second side shielding module 1122, two third side shielding modules 1123, two fourth side shielding modules 1124, two fifth side shielding modules 1125, two sixth side shielding modules 1126, two seventh side shielding modules 1127 and two eighth side shielding modules 1121.

[0096] The first side shielding module 1121 and the second side shielding module 1122 are arranged at intervals and respectively form part of the side walls of the first channel segment 1111. The irradiation part is located between the first side shielding module 1121 and the second side shielding module 1122.

[0097] The first ends of the two third side shielding modules 1123 along their length directions are respectively connected to both ends of the first side shielding module 1121, and the second ends extend towards the direction of the second side shielding module 1122 and have an interval from the second side shielding module 1122 in the length direction of the second side shielding module 1122. The first side shielding module 1121, the second side shielding module 1122 and the third side shielding module 1123 respectively form part of the side walls of the second channel segment 1112.

[0098] The second ends of the third side shielding module 1123 along its length direction exceed the side of the second side shielding module 1122 away from the first side shielding module 1121. The shielding effectiveness of the part of the third side shielding module 1123 that exceeds the second side shielding module 1122 is less than the shielding effectiveness of the part of the third side shielding module 1123 opposite to the first channel segment 1111.

[0099] The first ends of the two fourth side shielding modules 1124 along their length directions are respectively connected to the two ends of the second side shielding module 1122, and the fourth side shielding modules 1124 form part of the side walls of the second channel section 1112. The shielding effectiveness of the fourth side shielding modules 1124 is less than that of the third side shielding modules 1123. The second ends of the fourth side shielding modules 1124 along their length directions extend beyond the second ends of the third side shielding modules 1123.

[0100] The first ends of the two fifth side shielding modules 1125 along their length directions are respectively connected to the second ends of the two fifth side shielding modules 1124. The third side shielding module 1123 and the fifth side shielding modules respectively form part of the side walls of the third channel section 1113.

[0101] The shielding effectiveness of the fifth side shielding modules 1125 is less than that of the third shielding modules. The shielding effectiveness of the fifth side shielding modules 1125 is greater than that of the fourth shielding modules.

[0102] The first ends of the two sixth side shielding modules 1126 along their length directions are respectively connected to the second ends of the two fourth side shielding modules 1125, and the second ends extend towards the side of the third side shielding module 1123. The third side shielding module 1123, the fourth side shielding modules 1125, and the sixth side shielding modules 1126 respectively form part of the side walls of the fourth channel section 1114. The shielding effectiveness of the sixth side shielding modules 1126 is less than that of the fourth side shielding modules 1125.

[0103] Among them, the third side shielding module 1123 constitutes the common side wall of the second channel section 1112 and the fourth channel section 1114. This setting is conducive to the compact structure of the weighing device shielding body 110, thereby facilitating the reduction of the space occupied by the irradiation sterilization system.

[0104] The first ends of the two seventh side shielding modules 1127 along their length directions are respectively connected to the first ends of the two third side shielding modules 1123, and the second ends extend towards the side away from the first channel section 1111. The seventh side shielding modules 1127 constitute part of the side walls of the fourth channel section 1114.

[0105] The first ends of the eighth side shielding module 1128 along its length direction are respectively connected to the first ends of the two sixth side shielding modules 1126, and the second ends extend towards the side away from the first channel section 1111.

[0106] The seventh side shielding modules 1127 and the eighth side shielding module 1128 constitute part of the side walls of the fifth channel section 1115.

[0107] Among them, the shielding effectiveness of the part of the seventh side shielding module 1127 that forms the side wall of the fourth channel segment 1114 is greater than that of the part of the seventh side shielding module 1127 that forms the side wall of the fifth channel segment 1115, and is also greater than the shielding effectiveness of the eighth side shielding module 1128.

[0108] As Figure 2 shown, in the embodiments of the present disclosure, each of the multiple side shielding modules of the conveying device shielding body includes a surrounding plate 100A and a connecting structure 110C. The surrounding plates 100A of the multiple side shielding modules enclose a serpentine channel 111. Among them, the surrounding plates 110A of the first side shielding module 1121, the second side shielding module 1122, the third side shielding module 1123, the fourth side shielding module 1124, the fifth side shielding module 1125, and the sixth side shielding module 1126 enclose an accommodating portion of the shielding main body 110B, and the material of the shielding main body 110B is filled into the corresponding accommodating portion by means of casting. The shielding effectiveness of each shielding module is mainly adjusted by the material and thickness of the shielding main body 110B.

[0109] For some side shielding modules, such as the first side shielding module 1121, the second side shielding module 1122, the fourth side shielding module 1124, the fifth side shielding module 1125, and the sixth side shielding module 1126, the shielding material fills the space of the corresponding surrounding plate 110A.

[0110] For some side shielding modules, such as the third side shielding module 1121, in addition to enclosing the accommodating portion for accommodating the shielding main body 110B, its surrounding plate 110A is also provided with a vacant portion that does not fill the shielding material. The purpose of setting the vacant portion is to coordinate the dimensions of each channel segment and the shielding effectiveness of each shielding module, as well as to adjust the shielding effectiveness of different parts inside the module.

[0111] As Figure 2 shown, the space enclosed by the surrounding plate 110A of the third side shielding module 1123 includes an accommodating portion on the side close to the second channel segment 1112 and a vacant portion on the side close to the fourth channel segment 1114. And the thickness of the accommodating portion is thinner at one end far from the first side shielding module 1111, so as to adjust the thickness of the shielding material of the shielding main body 110B filled in different parts of the third side shielding module 1123, and thus adjust the shielding effectiveness of different parts of the third side shielding module 1123.

[0112] In addition, in some side shielding modules, the enclosure 110A may not have a receiving portion, but the shielding body 110B may be directly attached to the wall of the enclosure 110A. For example, a removable mold may be provided to form a receiving portion together with the enclosure 110A, and then the shielding body 110B is cast on the corresponding enclosure 110A, and then the removable mold is removed to fix the shielding body 110B to the enclosure 110A. The shielding body 110B may also be fixedly connected to the enclosure 110A by a detachable connection method such as a threaded connection component or a clamping component. For example, as shown in Figure 2 As shown in FIG. 1 , the shielding body 110B of the seventh side shielding module 1127 constituting the side wall of the fourth channel section 1114 is fixedly connected to the enclosure 110A through a threaded connector.

[0113] The fifth channel section 1115 is adjacent to the port P of the serpentine channel 110, and the shielding requirement is relatively low. Therefore, the part of the seventh side shielding module 1127 that constitutes the side wall of the fifth channel section 1115 and the eighth side shielding module 1128 are only provided with the enclosure 110A, and the shielding body 110B is not provided.

[0114] The enclosure 110A is made of steel plate, and the shielding body 110B is made of lead. The two are combined to form the main part of the shielding module in the form of steel-clad lead, which is easy to manufacture into a shielding module with the required shape, thickness and shielding effectiveness, and easy to connect different shielding modules.

[0115] If Figure 2 As shown in FIG. 1 , the connection structure 110C may include an ear plate, and a connection hole is provided on the ear plate for passing a threaded connector. The ear plate is used to be detachably connected to the shielding bottom plate 130.

[0116] In addition, the connection structure 110C is not limited to the ear plate form, and may also include other forms, for example, the connection structure may also be a connection hole directly penetrated on the main body of the shielding module, such as Figure 1 The connection structure required for connecting the top shielding module and the side shielding module shown in is set as a connection hole, and then the corresponding channel shielding modules are connected by bolts, as shown in Figure 3 and Figure 4 As shown in FIG. 1 , the connection structure required for connecting the radiation shielding modules can also be in the form of connection holes, and then the corresponding radiation shielding modules are connected by bolts. In embodiments not shown in the figure, the connection structure can also include other structural forms such as a snap-on structure and a latch connection structure.

[0117] In the previous description, only Figure 2 The shielding module of the conveying device shielding body shown in is taken as an example in Figure 2 marks the enclosure, shielding body and connection structure of some shielding modules. But Figures 2 to 4 ​​​​​​In each of the shielding modules, if it involves a shielding module including a skirt board, a shielding body, and a connection structure, this description applies. For example, some shielding modules of the irradiation device shielding body 120 also apply to this description of the shielding module.

[0118] As Figure 3 and Figure 4 shown, the irradiation shielding device 120 includes a plurality of irradiation shielding modules, including the first to eighth irradiation shielding modules 1201 to 1208 and the ninth to thirteenth irradiation shielding modules 1211 to 1215. Among them, the first to eighth irradiation shielding modules 1201 to 1208 are irradiation shielding modules in the form of ladles filled with lead, and the ninth to thirteenth irradiation shielding modules 1211 to 1215 are irradiation shielding modules in the form of lead blocks.

[0119] As Figure 3 and Figure 4 shown, two thirteenth irradiation shielding modules 1215 are respectively detachably mounted on the opposite surfaces of the first side shielding module 1121 and the second side shielding module 1122 through threaded connectors. On the one hand, the irradiation shielding body 120 is mounted on the conveying device shielding body 110, and on the other hand, the shielding performance of the irradiation part is also enhanced.

[0120] Two first irradiation shielding modules 1201 are respectively mounted on the top surfaces of the first side shielding module 1121 and the second side shielding module 1122, and are respectively detachably connected to two thirteenth irradiation shielding modules 1215 through threaded connectors. The outer contours of the two first irradiation shielding modules 1201 are respectively arranged offset inwards relative to the outer contours of the first side shielding module 1121 and the second side shielding module 1122. Two eleventh irradiation shielding modules 1213 and two ninth irradiation shielding modules 1211 respectively located above the two eleventh irradiation shielding modules 1213 are respectively connected to the two first irradiation shielding modules 1201 to enclose a space, and are respectively detachably connected to the two thirteenth irradiation shielding modules 1215 through threaded connectors.

[0121] Two second irradiation shielding modules 1202 are respectively mounted on the top surfaces of the two first irradiation shielding modules 1201, and are respectively detachably connected to the two first irradiation shielding modules 1201 through threaded connectors. The outer contours of the two second irradiation shielding modules 1202 are respectively arranged offset inwards relative to the outer contours of the two first irradiation shielding modules 1201. Two eighth irradiation shielding modules 1208 are respectively connected to the two second irradiation shielding modules 1202 to enclose a space, and are respectively detachably connected to the two ninth irradiation shielding modules 1211 through threaded connectors. The outer contours of the two eighth irradiation shielding modules 1208 are respectively arranged offset inwards relative to the outer contours of the two ninth irradiation shielding modules 1211.

[0122] A third irradiation shielding module 1203, a seventh irradiation shielding module 1207, and a sixth irradiation shielding module 1206 located above the seventh irradiation shielding module 1207 are respectively installed above two second irradiation shielding modules 1202, and are detachably connected to the two second irradiation shielding modules 1202 respectively through threaded connectors. The outer contours of the third irradiation shielding module 1203 and the sixth irradiation shielding module 1206 are respectively arranged offset inwards relative to the outer contours of the two second irradiation shielding modules 1202. A waveguide channel W is provided between the sixth irradiation shielding module 1206 and the seventh irradiation shielding module 1207. Two fifth irradiation shielding modules 1205 are respectively connected to the third irradiation shielding module 1203, the seventh irradiation shielding module 1207, and the sixth irradiation shielding module 1206 to enclose a space, and are detachably connected to two eighth irradiation shielding modules 1208 respectively through threaded connectors. The outer contours of the fifth irradiation shielding module 1205 and the seventh irradiation shielding module 1207 are respectively arranged offset inwards relative to the outer contours of the two eighth irradiation shielding modules 1208, and the outer contours of the sixth irradiation shielding module 1206 and the seventh irradiation shielding module 1207 are flush. On the outer sides of the other two eighth irradiation shielding modules 1208, twelfth irradiation shielding modules 1214 are respectively provided, and the twelfth irradiation shielding modules 1214 are connected to the eighth irradiation shielding modules 1208 through threaded connectors to enhance the shielding effectiveness at the eighth irradiation shielding modules 1208.

[0123] A fourth irradiation shielding module 1204 covers the tops of the third irradiation shielding module 1203, the sixth irradiation shielding module 1206, and the two fifth irradiation shielding modules 1205, and is connected to them through threaded connectors. A tenth irradiation shielding module 1212 covers the top of the fourth irradiation shielding module 1204 to enhance the shielding effectiveness of the top. Among them, the tenth irradiation shielding module 1212 can be a single lead block or can be composed of a combination of multiple lead blocks.

[0124] As Figure 5 shown, the irradiation device 300 includes an electron accelerator 310, a scanning device 320, a power transmission device 330, and a microwave head 340. The microwave head 340 includes a power supply system 341, a power source system 342, a control system 343, an auxiliary system 344, etc. The ray emission part of the irradiation device 300 includes the electron accelerator 310 and the scanning device 320, and the two are arranged in the irradiation shielding device 120, and the scanning device 320 is located below the electron accelerator 310. The power transmission device 330 is connected to the electron accelerator through the waveguide channel W. A waveguide shielding part is further provided outside the waveguide channel W to prevent ray leakage at the waveguide channel W.

[0125] As Figure 1 and Figure 3As shown, the shielding bottom plate 130 gradually decreases from the irradiation part to the end of the serpentine channel 111 along the extending direction of the serpentine channel 111. The shielding bottom plate 130 may include a backing plate 131, a filling layer 132, and a top plate 133. The filling layer 132 is disposed between the backing plate 131 and the top plate 132. The backing plate 131 is a steel flat plate.

[0126] The top plate 133 is the shielding main body of the shielding bottom plate 130 and is made of lead. According to the shielding requirements, the top plate 133 is set to different thicknesses at different positions. As Figure 3 shown, for example, the first part of the top plate 133 corresponding to the part of the first channel section 1111 and the part of the second channel section 1112 connected to the first channel section 1111 is the thickest. The second part of the top plate 133 corresponding to the third channel section 1113, the fourth channel section 1114, and the part of the second channel section 1112 connected to the third channel section 1113 is thinner than the first part of the top plate 133. The third part of the top plate 133 outside the first part of the top plate 133 and the second part of the top plate 133 is thinner than the second part of the top plate 133. Thus, on the basis of meeting the shielding efficiency required for the corresponding parts, the shielding material is saved and the equipment weight is reduced.

[0127] The top plate 133 of the shielding bottom plate 130 can be integrally cast with lead or can include a plurality of shielding modules spliced together.

[0128] In the irradiation sterilization system of the present disclosure embodiment, the main body of the shielding device is mainly composed of two materials, structural steel and lead. The main shielding part of the conveying device shielding body 110 adopts a serpentine channel, which can effectively achieve self-shielding protection.

[0129] In the irradiation device 300, the working voltage and current required by the power source 342 are provided by the power supply system 341, so that it can generate a microwave field. The microwave field is transmitted to the electron accelerator 310 through the power transmission device 330. A high-energy electron beam is generated in the electron accelerator 310. The electron beam is scanned into a linear irradiation beam B by the scanning device 320 to perform irradiation sterilization treatment on the irradiated article.

[0130] The shielding device 100 is mainly composed of materials such as steel and lead. Different shielding modules adopt an overlapping (offset splicing) method for shielding design, which can effectively reduce radiation leakage. The conveying device shielding body 110 of the shielding device 100 adopts a serpentine channel 111, and the irradiation shielding body 120 adopts a "tower" structure, which can provide a transmission channel for the irradiated object and effectively protect against the leakage of the irradiation beam B and the derivative rays caused by its scattering, and is also beneficial to controlling the overall weight of the shielding device.

[0131] The conveying device 200 adopts a plate chain transmission system, which is laid flat on the shielding bottom plate 130, located inside the serpentine channel 111, and is surrounded by the transport device shielding body 110 and the shielding bottom plate 130. In some embodiments, the transmission direction of the conveying device 200 is as Figure 2 shown by the arrow in

[0132] The side walls of the transport device shielding body 110 are mainly composed of a steel frame (the enclosing plates 110A of each relevant shielding module) that forms the serpentine channel 111 and lead ingots filled or lead plates attached (each shielding main body 110B). Among them, the steel frame is formed by welding structural steel, and the adjacent shielding modules overlap each other, and are fixed to the shielding bottom plate 130 through a connection structure arranged at the bottom of the enclosing plate 110A, an ear plate and the connection holes thereon, and threaded connectors. Lead ingots are filled inside the steel frame, and the lead ingots are cross-distributed at the joints between the shielding modules to prevent the occurrence of through gaps. In addition, lead plates are attached and installed at some positions. By reasonably setting the channel width, turning position and the thickness of lead ingots or lead plates at different positions, the rays are scattered and attenuated in the channel to ensure that the self-shielding system meets the leakage dose requirements of the ports P at both ends of the serpentine channel 111, without the need to set tungsten gates.

[0133] The irradiation shielding body 120 covering the outside of the electron accelerator 310 and the scanning device 320 is designed in a "tower" structure, including irradiation shielding modules in various forms of lead blocks and steel-clad lead assemblies, and each irradiation shielding module is detachably connected through threaded connectors. Among them, the steel-clad lead is formed by welding structural steel into an enclosing plate with a containing part, and then pouring lead water into the containing part of the enclosing plate and processing it. The joint surface of each irradiation shielding module in the form of a steel-clad lead assembly and other components is processed by corner lapping. After the irradiation shielding body 120 is assembled, there is no through connection of steel plates in each direction section. On the premise of meeting the installation and leakage dose requirements of the electron accelerator 310 and the scanning device 320, the external contour dimensions of the shielding main body are gradually reduced layer by layer, which is beneficial to ensuring that the overall weight of the irradiation sterilization system meets the requirements of container transportation.

[0134] The irradiation sterilization system of the above embodiments has at least one of the following advantages:

[0135] The transport device shielding body adopts a serpentine channel design scheme, without the need to set tungsten gates on both sides of the irradiation chamber. On the premise that the weight meets the standard container transportation, the internal space of the cabin is fully utilized, and the layout is reasonable, which is beneficial to ensuring the self-shielding protection performance.

[0136] The shielding of the electron accelerator and the scanning device adopts a "tower" structure. Through the combined scheme of steel-clad lead and lead plates, the mechanical strength and protection performance of the self-shielding system can be effectively guaranteed, and it is convenient for the later maintenance of the accelerator.

[0137] All the main parts of the irradiation sterilization system are installed inside the cabin, forming a containerized irradiation sterilization system, which is convenient for flexible transportation. The shielding device can meet the radiation protection requirements and ensure safety outside the cabin. Its beam output mode is that it can output beams as long as it is powered, with strong application flexibility and applicability.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit them; although the present disclosure has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that it is still possible to modify the specific implementation manners of the present disclosure or perform equivalent replacements for some technical features, and they should all be covered within the scope of the technical solutions claimed by the present disclosure.

Claims

1. A radiation sterilization system, characterized in that: include: A shielding device (100) comprises a conveying device shielding body (110), wherein the conveying device shielding body (110) has a serpentine channel (111), wherein the serpentine channel (111) comprises three or more return bends connected to each other, wherein one of the three or more return bends is an irradiation bend, wherein the irradiation bend comprises an irradiation portion, and at least one return bend is respectively provided at both ends of the irradiation bend; A conveying device (200) is configured to convey an object to be irradiated from one end port (P) of the serpentine channel (111) to another end port (P) in the serpentine channel (111); and The irradiation device (300) comprises a ray emitting unit, wherein the ray emitting unit is configured to emit a radiation beam (B) toward the irradiation unit to irradiate the article to be irradiated that is transported by the transport device (200) and passes through the irradiation unit.

2. The radiation sterilization system according to claim 1, characterized in that: The three or more turns include a right-angle turn, a curved turn or a V-shaped turn.

3. The radiation sterilization system according to claim 1, characterized in that: The serpentine channel (111) comprises: A first channel section (1111), comprising the irradiation portion; A second channel section (1112), wherein the first ends of the two second channel sections (1112) are respectively connected to the two ends of the first channel section (1111), and the first channel section (1111) and the first ends of the two second channels form a turning track; a third channel segment (1113), wherein first ends of the two third channel segments (1113) are respectively connected to second ends of the two second channel segments (1112); and A fourth channel segment (1114), the first ends of the two fourth channel segments (1114) are respectively connected to the second ends of the two third channel segments (1113), and each of the third channel segments (1113) and the second end of the corresponding second channel segment (1112) and the first end of the corresponding fourth channel segment (1114) form a turning track.

4. The radiation sterilization system according to claim 3, characterized in that: The second channel section (1112) is perpendicular to the first channel section (1111); and / or The third channel section (1113) is perpendicular to the second channel section (1112); and / or The fourth channel section (1114) is perpendicular to the third channel section (1113).

5. The radiation sterilization system according to claim 3, characterized in that: The serpentine channel (111) further comprises two fifth channel segments (1115), the first ends of the two fifth channel segments (1115) being respectively connected to the second ends of the two fourth channel segments (1114), and the second ends of the fifth channel segments (1115) comprising the port (P) of the serpentine channel (111).

6. The radiation sterilization system according to claim 1, characterized in that: The shielding device (100) comprises a plurality of shielding modules, and at least some of the shielding modules are detachably connected.

7. The radiation sterilization system according to claim 6, characterized in that: At least one of the shielding modules comprises: Hoarding (110A); A shielding body (110B) is fixedly disposed with the enclosure (110A); and The connection structure (110C) is disposed on the enclosure (110A) and / or the shielding body (110B), and is configured to be detachably connected to other shielding modules.

8. The radiation sterilization system according to claim 7, characterized in that: The shielding body (110B) is fixedly connected to the enclosure (110A) by casting; or The shielding body (110B) is detachably connected to the enclosure (110A).

9. The radiation sterilization system according to claim 6, characterized in that: The connected shielding modules are overlapped.

10. The radiation sterilization system according to claim 6, characterized in that: The multiple shielding modules include multiple channel shielding modules for forming the shielding body (110) of the conveying device, and the shielding effectiveness of each channel shielding module gradually decreases from the irradiation part to the end of the serpentine channel (111) along the extension direction of the serpentine channel (111).

11. The radiation sterilization system according to claim 10, characterized in that: The plurality of channel shielding modules include: A plurality of side shielding modules forming side walls of the serpentine channel (111); and A plurality of top shielding modules form the top wall of the serpentine channel (111) and are connected to the top ends of the side shielding modules. At least a portion of the top shielding modules are detachably connected to the side shielding modules.

12. The radiation sterilization system according to claim 10, characterized in that: The plurality of channel shielding modules are all flat shielding modules.

13. The radiation sterilization system according to claim 11, characterized in that: At least one of the side shielding modules separates two channel sections of the serpentine channel (111), so that the two channel sections share the side shielding module as a side wall.

14. The radiation sterilization system according to any one of claims 1 to 13, characterized in that: The shielding device (100) further comprises a shielding bottom plate (130), and the conveying device shielding body (110) is mounted on the shielding bottom plate (130).

15. The radiation sterilization system according to claim 14, characterized in that: The shielding effectiveness of the shielding bottom plate (130) gradually decreases from the irradiated portion to the end of the serpentine channel (111) along the extension direction of the serpentine channel (111).

16. The radiation sterilization system according to any one of claims 1 to 13, characterized in that: The irradiation device (300) is installed on the shielding body (110) of the conveying device, and the shielding device (100) also includes an irradiation shielding body (120). The ray emitting part is located in the irradiation shielding body (120). The shielding device (100) includes a plurality of shielding modules, and the plurality of shielding modules include a plurality of irradiation shielding modules constituting the irradiation shielding body (120), and at least some of the irradiation shielding modules are detachably connected.

17. The radiation sterilization system according to claim 16, characterized in that: The ray emitting unit comprises an electron accelerator (310) and a scanning device (320), and the outer dimensions of the irradiation shielding body (120) gradually decrease from the top of the conveying device shielding body (110) toward an end away from the conveying device shielding body (110).

18. The radiation sterilization system according to any one of claims 1 to 13, characterized in that: It also includes a cabin (400), wherein the conveying device (200), the irradiation device (300) and the shielding device (100) are all located inside the cabin (400).

19. The radiation sterilization system according to claim 18, characterized in that: It also includes a running device (500), and the cabin (400) is arranged on the running device (500).

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