Irradiation sterilization system

Abstract

An embodiment of the present invention discloses an irradiation sterilization system, including: a shielding device (100), a channel (101) is formed in the shielding device, and the channel (101) is in a "self" shape; a transmission device (200), which is arranged in the shielding device (100) along the channel (101); an accelerator, which is arranged on the channel (101) and is used to generate an electron beam for irradiation sterilization; wherein, the shielding device (100) is used to shield the electron beam. By using the shielding device in the embodiment of the present invention, the electron beam generated by the accelerator can be effectively shielded, and while ensuring the process requirements of cold chain goods irradiation sterilization, the radiation protection safety of operators can be effectively protected.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of irradiation processing, and more particularly to an irradiation sterilization system. Background Art

[0002] With the globalization of the economy, the cross-border spread of harmful organisms caused by imported and exported goods has become an urgent problem to be solved.

[0003] Currently, most of the sterilization methods for imported cold-chain goods use chemical methods. Chemical sterilization methods have certain limitations and can only effectively kill the viruses remaining on the outer surface of the goods packaging boxes, but it is difficult to kill the viruses on the surface of the goods and the inner surface of the packaging boxes. Summary of the Invention

[0004] According to an embodiment of the present invention, there is provided an irradiation sterilization system, including: a shielding device, inside which a channel is formed, and the channel is in a "ji" shape; a transmission device disposed in the shielding device along the channel; an accelerator disposed on the channel for generating an electron beam for irradiation sterilization; wherein, the shielding device is used for shielding the electron beam.

[0005] In some embodiments, the shielding device includes: a first shielding assembly and a second shielding assembly, and the first shielding assembly and the second shielding assembly are combined to form the "ji"-shaped channel with a predetermined width.

[0006] In some embodiments, the first shielding assembly is in an inverted U shape; the second shielding assembly is in a U shape; one U-shaped side of the first shielding assembly is partially inserted into the U-shaped opening of the second shielding assembly, and one U-shaped side of the second shielding assembly is partially inserted into the U-shaped opening of the first shielding assembly.

[0007] In some embodiments, a first shielding body is vertically disposed on the other U-shaped side of the first shielding assembly, and the first shielding body is located inside the U-shaped first shielding assembly.

[0008] In some embodiments, a fifth shielding body and a sixth shielding body are vertically disposed on the one U-shaped side of the second shielding assembly, and the fifth shielding body and the sixth shielding body are respectively located on both sides of the first shielding body.

[0009] In some embodiments, a fourth shielding body is vertically disposed on the other U-shaped side of the second shielding assembly, and the fourth shielding body is located inside the U-shaped second shielding assembly.

[0010] In some embodiments, a second shielding body and a third shielding body are vertically disposed on the one U-shaped side of the first shielding assembly, and the second shielding body and the third shielding body are respectively located on both sides of the fourth shielding body.

[0011] In some embodiments, the accelerator includes: a first accelerator, which is arranged on the channel between the bottom edge of the U-shape of the first shielding assembly and the fifth shielding body, and is used to generate an electron beam from top to bottom.

[0012] In some embodiments, the accelerator further includes: a second accelerator, disposed at a central position within the shielding device, for generating an electron beam from bottom to top.

[0013] In some embodiments, the second accelerator is disposed in a channel between the one U-shaped side of the first shield assembly and the one U-shaped side of the second shield assembly.

[0014] In some embodiments, the thickness of the first shielding assembly decreases as the distance between the first shielding assembly and the accelerator increases; and / or the thickness of the second shielding assembly decreases as the distance between the second shielding assembly and the accelerator increases.

[0015] In some embodiments, the shielding device is in a quadrilateral shape, and further comprises an inlet and an outlet, wherein the inlet and the outlet are respectively disposed at two opposite corners of the shielding device.

[0016] In some embodiments, it also includes: a power source, which is disposed in the shielding device and is used to generate microwave power and provide it to the accelerator.

[0017] In some embodiments, it also includes: a control device, disposed in the shielding device, for controlling at least one of the transmission device, the accelerator and the power source.

[0018] In some embodiments, the power source and / or the control device are embedded in a shielding body of the shielding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other objects and advantages of the present invention will become apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention.

[0020] Figure 1 is a schematic structural diagram of a radiation sterilization system according to an embodiment of the present invention;

[0021] Figure 2 is a schematic structural diagram of a shielding device according to an embodiment of the present invention;

[0022] Figure 3 is a schematic structural diagram of a shielding device according to another embodiment of the present invention.

[0023] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.

[0024] Description of reference numerals:

[0025] 100, shielding device; 101, passage; 102, entrance; 103, exit;

[0026] 110. first shielding assembly; 111. U-shaped side; 112. U-shaped side;

[0027] 130, a first shielding body; 140, a second shielding body; 150, a third shielding body;

[0028] 120, second combined shielding body; 121, U-shaped side; 122, U-shaped side;

[0029] 160, fourth shielding body; 170, fifth shielding body; 180, sixth shielding body;

[0030] 200, transmission device; 310, first accelerator; 320, second accelerator; 400, irradiated object; 500, power source; 600, control device; 700, storage area for non-irradiated objects; 800, storage area for irradiated objects. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiment is one embodiment of the present invention, not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that unless otherwise defined, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those with ordinary skills in the field to which the present invention belongs. If descriptions such as "first", "second", etc. are involved throughout the text, these "first", "second", etc. descriptions are only used to distinguish similar objects, and should not be understood as indicating or implying their relative importance, sequence, or implicitly indicating the quantity of the indicated technical features. It should be understood that the data described by "first", "second", etc. can be interchanged under appropriate circumstances. If "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes scenario A, or scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, for the convenience of description, spatial relative terms such as "above", "below", "top", "bottom", etc. can be used here, which are only used to describe the spatial position relationship between a device or feature shown in the figure and other devices or features, and it should be understood that it also includes different orientations during use or operation other than the orientations shown in the figure.

[0033] To block the transmission path of the virus along the cold chain route, the irradiation sterilization system in the present invention can be used to irradiate and sterilize the cold chain packaging box. Electron beam irradiation sterilization has the characteristics of strong penetrability, uniform and thorough sterilization, and fast processing speed. It can process sealed packaged items, is easy to operate, has no residual poisons, and is safe and hygienic. Based on the advantageous characteristics of electron irradiation sterilization, irradiating and sterilizing imported cold chain goods can effectively prevent the spread of the virus and ensure the safety of the domestic circulation of cold chain goods. Hereinafter, the irradiation sterilization system of the present invention and the shielding device 100 for the irradiation sterilization system will be described with specific embodiments. Among them, the object to be irradiated 400 can be a cold chain packaging box or other objects that need to be irradiated.

[0034] Figure 1 Fig. shows a schematic structural diagram of an irradiation sterilization system according to an embodiment of the present invention. As Figure 1 shown, the irradiation sterilization system of this embodiment includes a shielding device 100, a transmission device 200, and an accelerator. Among them, a channel 101 is formed in the shielding device 100, and the channel 101 is in a "ji" shape.

[0035] Specifically, the shielding device 100 can be quadrilateral, and the shielding device also has an inlet 102 and an outlet 103. The inlet 102 and the outlet 103 are respectively arranged at two opposite corners of the shielding device 100. For example, the inlet 102 and the outlet 103 can be arranged at two opposite corners along the diagonal of the shielding device 100.

[0036] The transmission device 200 is disposed in the shielding device 100 along the passage 101. The transmission device 200 can unidirectionally transmit the irradiated object 400 in the direction from the inlet 102 to the outlet 103. The irradiated object 400 enters the shielding device 100 through the inlet 102 and is output to the outside of the shielding device 100 through the outlet 103.

[0037] like Figure 1 As shown, the outside of the inlet 102 may be a non-irradiated object storage area 700, and the outside of the outlet 103 may be an irradiated object storage area 800. In this embodiment, the inlet 102 and the outlet 103 are arranged at different positions of the shielding device 100, so that the non-irradiated objects and the irradiated objects are placed at different positions of the shielding device 100, respectively, which can prevent the non-irradiated objects and the irradiated objects from being mixed up, and also provide a guarantee for preventing secondary contamination of cold chain goods.

[0038] The accelerator is arranged on the passage 101, and is used to generate an electron beam for irradiation sterilization, wherein the shielding device 100 can shield the electron beam, reduce the radiation dose of the electron beam radiated to the outside of the shielding device 100, and ensure the radiation safety of the operator. Specifically, the accelerator includes a first accelerator 310 and a second accelerator 320, which are located at different positions in the shielding device 100, and are used to irradiate different surfaces of the irradiated object 400 from different directions, so as to achieve irradiation sterilization of different surfaces of the irradiated object 400 after the irradiated object 400 passes through the passage 101 at one time. For example, the first accelerator 310 can generate an electron beam from top to bottom to irradiate the irradiated object 400, and the second accelerator 320 can generate an electron beam from bottom to top to irradiate the irradiated object 400.

[0039] In some embodiments, the first accelerator 310 and the second accelerator 320 can irradiate three surfaces of the irradiated object 400. For example, the electron beam generated by the first accelerator 310 irradiates the top surface and two opposite side surfaces of the irradiated object 400, and the two opposite side surfaces are substantially parallel to the extension direction of the channel 101. Optionally, the two opposite side surfaces may also be substantially perpendicular to the extension direction of the channel 101. The electron beam generated by the second accelerator 320 irradiates the bottom surface and the other two opposite side surfaces of the irradiated object 400.

[0040] The accelerator of this embodiment can be used to irradiate and sterilize three surfaces of the irradiated object 400. The first accelerator and the second accelerator irradiate three different surfaces of the irradiated object 400 from different directions, respectively, so that the irradiated object 400 can be irradiated and sterilized on all six surfaces by passing through the channel 101 at one time, and the irradiation sterilization of cold chain goods can be efficiently achieved.

[0041] Figure 2A schematic structural diagram of a shielding device for a radiation sterilization system according to an embodiment of the present invention is shown.

[0042] like Figure 2 As shown, the shielding device 100 of this embodiment includes a first shielding assembly 110 and a second shielding assembly 120, and the first shielding assembly 110 and the second shielding assembly 120 are combined to form the "J"-shaped channel 101 with a predetermined width. The predetermined width can be determined according to the width of the transmission device 200. For example, the predetermined width can be slightly larger than the width of the transmission device 200, so that the transmission device 200 can run smoothly in the channel 101.

[0043] In some embodiments, the first shielding assembly 110 is in an inverted U-shape, and the second shielding assembly 120 is in a U-shape. A U-shaped side 111 of the first shielding assembly 110 is partially inserted into the U-shaped opening of the second shielding assembly 120, and a U-shaped side 121 of the second shielding assembly 120 is partially inserted into the U-shaped opening of the first shielding assembly 110, thereby forming a "J"-shaped channel 101.

[0044] In some embodiments, the first shielding body 130 is vertically disposed on the other U-shaped side 112 of the first shielding assembly 110, that is, the first shielding body 130 is perpendicular to the U-shaped side 112. And the first shielding body 130 is located inside the U-shaped first shielding assembly 110. As shown in FIG2 , the first shielding body 130 is disposed relative to the inlet 102, which can reduce the radiation dose of the electron beam generated by the accelerator at the inlet 102, thereby ensuring the radiation safety of the operator.

[0045] Further, the one U-shaped side 121 of the second shielding assembly 120 is vertically provided with a fifth shielding body 170 and a sixth shielding body 180, that is, the fifth shielding body 170 and the sixth shielding body 180 are perpendicular to the U-shaped side 121. And the fifth shielding body 170 and the sixth shielding body 180 are respectively located on both sides of the first shielding body 130. For example, the fifth shielding body 170 can be arranged on one side of the first shielding body 130 close to the inlet 102, and the sixth shielding body can be arranged on the other side of the first shielding body 130.

[0046] By providing the first shielding body 130 , the fifth shielding body 170 and the sixth shielding body 180 , the channel 101 can have a serpentine curve near the entrance 102 , so that the electron beam generated by the accelerator is attenuated by multiple shielding of these shielding bodies, further reducing the radiation dose at the entrance 102 .

[0047] Likewise, if Figure 2 As shown, the other U-shaped side 122 of the second shielding assembly 120 may also be vertically provided with a fourth shielding body 160, that is, the fourth shielding body 160 is perpendicular to the U-shaped side 122. And the fourth shielding body 160 is located inside the U-shaped second shielding assembly 120.

[0048] Further, the second shielding body 140 and the third shielding body 150 are vertically arranged on the one U-shaped side 111 of the first shielding assembly 110, that is, the second shielding body 140 and the third shielding body 150 are perpendicular to the U-shaped side 111. In addition, the second shielding body 140 and the third shielding body 150 are respectively located on both sides of the fourth shielding body 160. For example, the second shielding body 140 can be arranged on one side of the fourth shielding body 160 close to the outlet 103, and the third shielding body 150 can be arranged on the other side of the fourth shielding body 160.

[0049] By providing the second shielding body 140 , the third shielding body 150 and the fourth shielding body 160 , the channel 101 can also have a serpentine curve near the exit 103 , so that the electron beam generated by the accelerator is shielded and attenuated multiple times by these shielding bodies, further reducing the radiation dose at the exit 103 .

[0050] In some embodiments, the first accelerator 310 may be disposed on a channel between the bottom edge of the U-shape of the first shielding assembly 110 and the fifth shielding body 170 to generate an electron beam from top to bottom to irradiate and sterilize three surfaces of the irradiated object 400. Figure 2 As shown, through the above arrangement, the shielding body on one side of the first accelerator 310 is in a U-shaped structure, which can increase the number of reflections of the electron beam it generates, ensuring that the electron beam can reach the outside of the shielding device 100 after multiple reflections and attenuation, thereby reducing the radiation dose at the entrance and exit of the shielding device.

[0051] like Figure 2 As shown, the second accelerator 320 can be disposed at the center of the shielding device 100 to generate an electron beam from bottom to top to irradiate and sterilize the remaining three surfaces of the irradiated object 400. Specifically, Figure 2 As shown, the second accelerator 320 can be arranged in the channel between the one U-shaped side 111 of the first shielding assembly 110 and the one U-shaped side 211 of the second shielding assembly 120, so that the shielding bodies on both sides of the second accelerator 320 are both U-shaped structures, which can increase the number of reflections of the electron beam it generates, ensure that the electron beams at different positions can reach the outside of the shielding device 100 after at least four reflection attenuations, and reduce the radiation dose at the entrance and exit of the shielding device.

[0052] In some embodiments, the thickness of the first shielding assembly 110 decreases as the distance between the first shielding assembly 110 and the accelerator increases, and / or the thickness of the second shielding assembly 120 decreases as the distance between the second shielding assembly 120 and the accelerator increases. Under the premise of ensuring effective protection of the shielding device, the area occupied by the shielding device and the construction cost of the shielding device can be effectively reduced.

[0053] Optionally, the height of the shielding device 100 is set to accommodate an operator, so that the operator can enter the channel 101 of the shielding device 100, thereby performing operations such as inspection and replacement of various devices or components arranged in the shielding device 100.

[0054] like Figure 1 As shown, the radiation sterilization system in this embodiment may further include a power source 500, which is disposed in the shielding device 100 and is used to generate microwave power and provide it to the accelerator.

[0055] In addition, the radiation sterilization system may further include a control device 600 , which is disposed in the shielding device 100 and is used to control at least one of the transmission device 200 , the accelerator and the power source 500 .

[0056] In some embodiments, the power source 500 and / or the control device 600 may be embedded in the shielding body of the shielding device 100 to reduce the impact of electron beam radiation on the power source 500 and / or the control device 600 and enable them to operate normally.

[0057] Figure 3 The following is a schematic diagram of the structure of a shielding device according to another embodiment of the present invention. Figure 3 As shown, in this embodiment, the first shielding assembly 110 and the second shielding assembly 120 respectively include 8 shielding bodies with different thicknesses.

[0058] Specifically, the first shielding assembly 110 may include: a shielding body 11, a shielding body 12, a shielding body 13, ... a shielding body 18. The shielding body 14 is U-shaped, and the shielding body 13 and the shielding body 11 are sequentially connected to one end of the shielding body 14 along the opening direction of the shielding body 14, and the shielding body 11 is located at the inlet 102. The shielding body 12 is vertically connected to one end of the shielding body 13 close to the shielding body 11, and the shielding body 15 and the shielding body 18 are respectively connected to the other end of the shielding body 14 and perpendicular to the shielding body 11. The shielding body 16 is 7-shaped, and forms a rectangular accommodation space with the shielding body 15, which can be used to accommodate the control device 600. The shielding body 17 is connected at a right angle to the shielding body 16 and is parallel to the shielding body 15. The shielding body 17 is located at the outlet 103.

[0059] The second shielding assembly 120 may include: a shielding body 21, a shielding body 22, ... a shielding body 28. The shielding body 21 is located at the outlet 103 and is parallel to the shielding body 17. The shielding body 23 is connected to the shielding body 21 along the length direction, the shielding body 22 is vertically connected to one end of the shielding body 23 close to the shielding body 21, and the shielding body 24 is vertically connected to the other end of the shielding body 23. The shielding body 25 is in a 7-shape, and one end thereof is vertically connected to one end of the shielding body 24 away from the shielding body 23 and the shielding body 26. The shielding body 27 is vertically connected to the other end of the shielding body 25, and the shielding body 28 is vertically connected to the shielding body 27, and the shielding bodies 25, 27 and 28 can enclose a rectangular accommodation space, which can be used to accommodate the power source 500.

[0060] In some embodiments, the first accelerator 310 may be located between the shielding body 14 and the shielding body 25, and may generate an electron beam from top to bottom for irradiating three surfaces of the irradiated object 400. The second accelerator 320 may be located between the shielding body 14 and the shielding body 25, and may generate an electron beam from bottom to top for irradiating the other three surfaces of the irradiated object 400. In this embodiment, the shielding bodies arranged on both sides of the second accelerator 320 are U-shaped structures, and the shielding body of the U-shaped structure on one side is composed of shielding bodies 22, 23, and 24, and the shielding body of the U-shaped structure on the other side is composed of shielding bodies 12, 13, and 14. The U-shaped shielding body structure can increase the number of reflections of the electron beam, and ensure that the electron beam lines at different positions can reach the outside of the shielding device after at least four reflections and attenuations, so as to reduce the radiation dose at the entrance and exit positions of the shielding device and ensure the radiation safety of the operator.

[0061] By using the shielding device in the embodiment of the present invention, the electron beams generated by the two accelerators can be effectively shielded, thereby effectively protecting the radiation protection safety of the operators while ensuring the irradiation sterilization process requirements of the cold chain goods.

[0062] Regarding the embodiments of the present invention, it should also be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0063] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An irradiation sterilization system for sterilizing and disinfecting imported cold chain goods, characterized in that: Comprising: A shielding device (100) with a channel (101) formed therein, and the channel (101) is in the shape of "ji"; A transmission device (200) disposed in the shielding device (100) along the channel (101); An accelerator disposed on the channel (101) for generating an electron beam for irradiation sterilization; wherein, the shielding device (100) is used to shield the electron beam; The shielding device (100) includes: A first shielding assembly (110) and a second shielding assembly (120), and the first shielding assembly (110) and the second shielding assembly (120) are combined to form the channel (101) in the shape of "ji" with a predetermined width; The first shielding assembly (110) is in an inverted U shape; The second shielding assembly (120) is in a U shape; One U-shaped side portion of the first shielding assembly (110) is partially inserted into the U-shaped opening of the second shielding assembly (120), and one U-shaped side portion of the second shielding assembly (120) is partially inserted into the U-shaped opening of the first shielding assembly (110); The height of the shielding device (100) is set to accommodate an operator; The shielding device (100) is quadrilateral, and the shielding device (100) also has an inlet (102) and an outlet (103), and the inlet (102) and the outlet (103) are respectively disposed at two opposite corners of the shielding device (100) to prevent confusion between unirradiated objects and irradiated objects and also provide a guarantee for preventing secondary contamination of cold-chain goods; another U-shaped side of the first shielding assembly (110) is vertically provided with a first shielding body (130), and the first shielding body (130) is located inside the U-shaped first shielding assembly (110); One U-shaped side of the second shielding assembly (120) is vertically provided with a fifth shielding body (170) and a sixth shielding body (180), and the fifth shielding body (170) and the sixth shielding body (180) are respectively located on both sides of the first shielding body (130); Another U-shaped side of the second shielding assembly (120) is vertically provided with a fourth shielding body (160), and the fourth shielding body (160) is located inside the U-shaped second shielding assembly (120); One U-shaped side of the first shielding assembly (110) is vertically provided with a second shielding body (140) and a third shielding body (150), and the second shielding body (140) and the third shielding body (150) are respectively located on both sides of the fourth shielding body (160); The accelerator includes: A first accelerator (310) disposed on the channel between the U-shaped bottom edge of the first shielding assembly (110) and the fifth shielding body (170) for generating an electron beam from top to bottom; A second accelerator (320), the second accelerator (320) being arranged in a channel between the one U-shaped side edge of the first shielding assembly (110) and the one U-shaped side edge of the second shielding assembly (120), and being used for generating an electron beam from bottom to top; The shielding body on one side of the first accelerator (310) is arranged to be in a U-shaped structure; The shielding bodies on both sides of the second accelerator (320) are both arranged to be U-shaped structures.

2. The system according to claim 1, characterized in that The thickness of the first shielding assembly (110) decreases as the distance between the first shielding assembly (110) and the accelerator increases; And / or, the thickness of the second shielding assembly (120) decreases as the distance between the second shielding assembly (120) and the accelerator increases.

3. The system according to claim 1, characterized in that Also includes: A power source (500) is disposed in the shielding device (100) and is used to generate microwave power and provide it to the accelerator.

4. The system according to claim 3, characterized in that Also includes: A control device (600) is disposed in the shielding device (100) and is used to control at least one of the transmission device (200), the accelerator and the power source (500).

5. The system according to claim 4, characterized in that The power source (500) and / or the control device (600) are embedded in the shielding body of the shielding device (100).

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