An inverted irradiation sterilization apparatus and method

Abstract

The application provides a turnover type irradiation sterilization device and method, relates to the technical field of radiation sterilization, and the device comprises an irradiation box body, a feeding belt conveying part, a discharging belt conveying part, an irradiation mechanism and a turnover driving assembly. The irradiation mechanism is provided with symmetrical rotating supports and a belt bearing assembly, can clamp a protective article and realize 180-degree turnover, and can make the front and back surfaces be exposed to the lower part of an irradiation generation module in sequence for sterilization. An adjusting unit controls the opening and closing and spacing of the belt bearing assembly, ensures stable conveying and clamping, and the turnover driving assembly synchronously drives the irradiation generation module to lift, so that interference is avoided. During sterilization, the protective article is first sent into the irradiation box body by the conveying belt, is turned over after first irradiation, is subjected to second irradiation, and is finally output by the discharging belt. The application adopts a closed automatic design, radiation is not leaked out, sterilization is complete and high in efficiency, and is suitable for the large-scale production of medical protective articles such as masks and protective clothes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radiation sterilization, in particular to a turnover radiation sterilization device and method. BACKGROUND

[0002] Protective articles (such as masks, protective clothing, medical gloves, etc.) are important consumables in the medical, laboratory and public health fields, and their sterility directly affects the safety of users. If protective articles carry bacteria, viruses or other microorganisms, cross-infection or disease transmission may occur, so sterilization is a key link in the production process.

[0003] At present, the commonly used sterilization methods include:

[0004] High temperature and high pressure sterilization (moist heat sterilization): suitable for materials resistant to high temperature, but may affect the physical properties of some protective articles (such as the electrostatic adsorption ability of melt-blown cloth masks).

[0005] Ethylene oxide (EO) sterilization: suitable for most materials, but there is a risk of toxic residue, and long-term ventilation is required for analysis.

[0006] Ultraviolet (UV) sterilization: only acts on the surface, with weak penetration, making it difficult to ensure deep sterilization effect.

[0007] Radiation sterilization (gamma rays, electron beams, etc.): strong penetration, complete sterilization, and no chemical residues, but traditional radiation equipment may have problems such as uneven sterilization, radiation leakage or low automation.

[0008] Therefore, there is an urgent need for an efficient, safe and highly automated radiation sterilization device and method to improve the sterilization effect and production efficiency of protective articles. SUMMARY

[0009] The purpose of the present application is to provide a turnover radiation sterilization device and method to solve the technical problems raised in the background art.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0011] The utility model provides a kind of turnover irradiation sterilization equipment, including irradiation box, irradiation mechanism and two conveying modules, the opposite side wall of the irradiation box is equipped with entrance and exit, two conveying modules are respectively feeding belt conveying component and discharging belt conveying component, and are respectively arranged in the opposite position of two entrances;The irradiation mechanism is arranged in the inside of irradiation box and includes rotating support, irradiation generation module, turnover drive assembly and two symmetrical belt bearing assemblies, the rotating support is two, and symmetrically arranged with the middle line of conveying module as symmetry center, rotating support is rotatably connected with the inner wall of irradiation box, and is driven to rotate by turnover drive assembly;Two belt bearing assemblies are located between two rotating supports, one rotating support is provided with adjusting unit connected with two belt bearing assemblies, adjusting unit can drive two belt bearing assemblies to move reversely in vertical direction synchronously, the middle part of belt bearing assembly located in upper side can be opened and closed, and the belt bearing assembly located in lower side can be conveyed to the discharging belt conveying component in the way of belt conveying to the protective article of complete irradiation sterilization, and the protective article on two belt bearing assemblies can be clamped when the opposite surfaces of two belt bearing assemblies contact;The irradiation generation module is located above belt bearing assembly, and the irradiation generation module is connected with turnover drive assembly, when rotating support is driven by turnover drive assembly to make two belt bearing assemblies overturn, the irradiation generation module can be moved vertically with the overturning action of belt bearing assembly, and the irradiation generation module has radiation source inside, which emits radiation downwards.

[0012] On the basis of the above technical scheme, the present application also provides the following optional technical solutions:

[0013] In an optional solution, the adjusting unit includes an adjusting screw and an adjusting motor, the adjusting screw is vertically arranged on one of the adjusting screws and can rotate freely, the output end of the adjusting motor is connected with one end of the adjusting screw, and the adjusting motor is provided with a screw nut part at both ends and is screw-connected with the two belt bearing assemblies.

[0014] In an alternative solution, the belt bearing assembly comprises a bearing frame, a fixed belt winding unit, a bearing conveying belt and a movable belt winding unit, the bearing frame is vertically slidably connected with the two rotating supports, a guide rod frame is arranged on the bearing frame, the fixed belt winding unit and the movable belt winding unit are arranged on the guide rod frame and are located at two ends thereof respectively, the fixed belt winding unit is fixedly connected with the guide rod frame, the movable belt winding unit can slide on the guide rod frame, one end of the bearing conveying belt is wound on the fixed belt winding unit and the other end is wound on the movable belt winding unit, the fixed belt winding unit and the movable belt winding unit can wind and release the bearing conveying belt, the irradiation generating module is provided with an elastic damping reset unit which can elastically and dampingly move along the length direction thereof, the lower side of the belt bearing assembly is further provided with a lower blocking assembly, when the two belt bearing assemblies are away from each other, the movable belt winding unit in the belt bearing assembly located at the upper side is in contact with the elastic damping reset unit, the elastic damping reset unit can elastically and dampingly limit the movable belt winding unit from moving towards the fixed belt winding unit; the movable belt winding unit in the belt bearing assembly located at the lower side is in contact with the lower blocking assembly and the lower blocking assembly can prevent the movable belt winding unit from moving towards the fixed belt winding unit.

[0015] In an alternative solution, the fixed belt winding unit comprises a fixed belt pulley frame, a first guide pulley and a first winding pulley, the side of the fixed belt pulley frame is fixedly connected with the guide rod frame, the first guide pulley is rotatably arranged at the end of the fixed belt pulley frame which points to the other belt bearing assembly, the first winding pulley is rotatably arranged at the other end of the fixed belt pulley frame, one end of the first winding pulley is connected with a winding motor, one end of the bearing conveying belt passes through the fixed belt pulley frame and is connected to the outer wall of the first winding pulley.

[0016] In an alternative solution, the movable belt winding unit comprises a movable belt pulley frame, a second guide pulley and a second winding pulley, the side of the second guide pulley is slidably connected with the guide rod frame, the second guide pulley is made of magnetic material, the end of the guide rod frame away from the fixed belt winding unit is provided with a magnet block; the second guide pulley is rotatably arranged at the end of the movable belt pulley frame which points to the other belt bearing assembly, the second winding pulley is rotatably arranged at the other end of the movable belt pulley frame, an elastic damper is arranged between the main shaft of the second winding pulley and the movable belt pulley frame; one end of the bearing conveying belt passes through the second guide pulley and is connected to the second winding pulley.

[0017] In an alternative, the side wall of the irradiation module is provided with a slide rod along the length direction, the elastic damping reset unit comprises a limiting frame and a limiting roller, the end of the limiting frame away from the belt bearing assembly is slidably connected with the slide rod, and the limiting roller is rotatably arranged at the end of the limiting frame facing the belt bearing assembly; when the two belt bearing assemblies are in the far-apart state, the top of the movable belt winding unit in the upper belt bearing assembly is in contact with the limiting roller; the top of the limiting frame is connected with one end of the slide rod through a reset spring.

[0018] In an alternative, the lower blocking assembly comprises a lower frame body, a blocking frame and a blocking roller, the two ends of the lower frame body are respectively vertically slidably connected with the inner wall of the irradiation box body and connected with the turnover driving assembly; the blocking frame is arranged at the middle position of the lower frame body, and the blocking roller is rotatably arranged on the blocking frame; when the two belt bearing assemblies are in the far-apart state, the blocking roller abuts against the side of the movable belt winding unit to prevent it from moving along the guide rod frame.

[0019] In an alternative, the irradiation module is provided with an upper frame body, the two ends of the upper frame body are vertically slidably connected with the inner wall of the irradiation box body, the turnover driving assembly comprises a turnover motor and two turnover shafts, the two turnover shafts are oppositely arranged and rotatably connected with the inner wall of the irradiation box body, the turnover shafts are further fixedly connected with a rotating support frame, the output end of the turnover motor is connected with one of the turnover shafts, each of the two turnover shafts is provided with a support arm, and the two ends of the support arm are hingedly connected with an upper movable link and a lower movable link, the end of the upper movable link away from the support arm is hingedly connected with the upper frame body, and the end of the lower movable link away from the support arm is hingedly connected with the lower frame body.

[0020] In an alternative, the top of the irradiation module is further provided with at least one upper guide rod which slidably penetrates the top wall of the irradiation box body, and the top of the upper guide rod is provided with a limiting device which is electrically connected with the turnover motor.

[0021] A turnover irradiation sterilization method based on the turnover irradiation sterilization device, comprising the following steps:

[0022] Step 1: loading stage

[0023] In the initial state, the two belt bearing assemblies are in a horizontal separation state, the center of the upper belt bearing assembly is open, and the lower belt bearing assembly is aligned with the loading belt conveying part; the protective articles are sent into the irradiation box body from the entrance through the loading belt conveying part and conveyed to the lower belt bearing assembly.

[0024] Step 2: first irradiation sterilization

[0025] The upper belt bearing assembly remains in the open center state, so that the upper surface of the protective articles is exposed below the irradiation module; the irradiation module is started, and the radiation source emits radiation downward to irradiate and sterilize the upward side of the protective articles.

[0026] Step 3 clamping and turning over

[0027] After the first irradiation is completed, the center of the upper belt bearing assembly is closed, the adjusting unit drives the two belt bearing assemblies to approach synchronously, and the protective article is clamped;

[0028] The turning over driving assembly drives the rotating support to rotate 180°, so that the positions of the two belt bearing assemblies are exchanged, the original upper side is turned into the lower side, and the original lower side is turned into the upper side.

[0029] During the turning over process, the irradiation generating module is synchronously vertically moved to avoid interference with the belt bearing assembly;

[0030] Step 4 second irradiation sterilization

[0031] After the turning over is completed, the adjusting unit drives the two belt bearing assemblies to separate, at this time, the unsterilized side of the protective article faces upward;

[0032] The center of the upper belt bearing assembly is opened again, the irradiation generating module is reset to the initial position and started, and the other side of the protective article is irradiated and sterilized.

[0033] Step 5 discharging stage

[0034] After the second irradiation is completed, the lower belt bearing assembly outputs the sterilized protective article from the other entrance to the discharging belt conveying part in a belt conveying mode, and the discharging belt conveying part conveys the sterilized protective article to the next process.

[0035] By adopting the technical scheme, the present application has the following beneficial effects:

[0036] The turning over type irradiation sterilization equipment provided by the present application makes the front and back sides of the protective article receive irradiation through the turning over mechanism, ensures that there is no dead angle in sterilization, and improves sterilization reliability; the irradiation process is completed in a closed box body, radiation leakage is avoided, and the safety of operators and the environment is ensured; conveying, turning over and irradiation are fully automated, manual intervention is reduced, production efficiency is improved, and the equipment is suitable for large-scale continuous operation; the irradiation generating module is adaptively adjusted in position with the turning over action, mechanical collision is avoided, and the service life of the equipment is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0038] Figure 1The schematic diagram of the overall structure of the irradiation sterilization device in one embodiment of the present application.

[0039] Figure 2 The schematic diagram of the irradiation mechanism structure in one embodiment of the present application.

[0040] Figure 3 The schematic diagram of the belt bearing assembly mounting structure in one embodiment of the present application.

[0041] Figure 4 The schematic diagram of the belt bearing assembly structure in one embodiment of the present application.

[0042] Figure 5 The schematic diagram of the fixed and movable belt winding unit structure in one embodiment of the present application.

[0043] Figure 6 The schematic diagram of the irradiation generation module, lower blocking assembly and turnover driving assembly structure in one embodiment of the present application.

[0044] The figure mark annotation: irradiation box body 100, access 110, feeding belt conveying part 200, discharging belt conveying part 300, irradiation mechanism 400, rotating support frame 500, adjusting screw part 510, adjusting motor 520, screw sleeve part 530, irradiation generation module 600, upper guide rod 610, upper frame body 620, limit stopper 630, sliding rod part 640, elastic damping reset unit 650, limit support 651, limit roller 652, reset spring 653, belt bearing assembly 700, bearing frame 710, fixed belt winding unit 720, fixed belt pulley frame 721, first guide pulley 722, first winding pulley 723, winding motor 724, bearing conveying belt 730, movable belt winding unit 740, movable belt pulley frame 741, second guide pulley 742, second winding pulley 743, guide rod frame 750, magnet block 760, lower blocking assembly 800, lower frame body 810, blocking frame 820, blocking roller 830, turnover driving assembly 900, turnover motor 910, turnover shaft 920, support arm rod 930, upper movable connecting rod 940, lower movable connecting rod 950. DETAILED DESCRIPTION

[0045] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0046] The left-right and up-down positions of various components given in the drawings are only one arrangement, and the specific positions are set according to specific needs.

[0047] In one embodiment, as shown in Figures 1-3 The present application discloses a turnover irradiation sterilization device, which comprises an irradiation box body 100, an irradiation mechanism 400 and two conveying modules. The irradiation box body 100 is provided with two opposite side walls, and two opposite side walls are provided with entrances 110. The two conveying modules are respectively an upper conveying belt component 200 and a lower conveying belt component 300, and are respectively arranged at opposite positions of the two entrances 110. The irradiation mechanism 400 is arranged in the irradiation box body 100 and comprises two rotating supports 500, an irradiation generating module 600, a turnover driving assembly 900 and two symmetrically arranged belt bearing assemblies 700. The two rotating supports 500 are symmetrically arranged with the middle line of the conveying module as the symmetric center, and are rotationally connected with the inner wall of the irradiation box body 100 and driven to rotate by the turnover driving assembly 900. The two belt bearing assemblies 700 are located between the two rotating supports 500. One of the rotating supports 500 is provided with an adjusting unit connected with the two belt bearing assemblies 700. The adjusting unit can drive the two belt bearing assemblies 700 to move in the vertical direction in the reverse direction synchronously. The middle part of the upper belt bearing assembly 700 can be opened and closed. The lower belt bearing assembly 700 can convey the protective articles subjected to irradiation sterilization to the lower conveying belt component 300 in the form of belt conveying. When the two belt bearing assemblies 700 are in contact with each other, the protective articles thereon can be clamped. The irradiation generating module 600 is located above the belt bearing assembly 700, and is connected with the turnover driving assembly 900. When the turnover driving assembly 900 drives the rotating support 500 to make the two belt bearing assemblies 700 overturn, the irradiation generating module 600 can move vertically in cooperation with the overturning action of the belt bearing assembly 700. The irradiation generating module 600 is internally provided with a radiation source for emitting radiation downward.

[0048] In the embodiment of the present application, in the initial state, the two belt bearing assemblies 700 are in a horizontal state and away from each other, the protective articles (such as masks, protective clothing or medical gloves, etc.) are placed on the upper belt conveying component 200, the upper belt conveying component 200 conveys them to the irradiation box 100, the protective articles are moved to the belt bearing assembly 700 on the lower side, the belt bearing assembly 700 on the upper side is in the center open state to expose the protective articles to the irradiation generating module 600 below, the irradiation generating module 600 emits radiation and performs radiation sterilization treatment on the upward side of the protective articles; after the first stage of radiation sterilization treatment is completed, the belt bearing assembly 700 on the upper side is in the center closed state, the adjusting unit drives the two belt bearing assemblies 700 to approach each other until the two belt bearing assemblies 700 clamp the protective articles, the turnover driving assembly 900 drives the rotating support 500 to rotate, the two belt bearing assemblies 700 rotate with the rotating support 500 and realize position exchange, at the same time, the turnover driving assembly 900 also drives the irradiation generating module 600 to move vertically to cooperate with the turnover of the belt bearing assembly 700, to avoid the interference phenomenon between the belt bearing assembly 700 and the irradiation generating module 600 during the turnover of the belt bearing assembly 700, after the turnover of the belt bearing assembly 700 is completed, the side of the protective articles which has not been irradiated is upward, the adjusting unit drives the two belt bearing assemblies 700 to move away from each other, at this time, the upper surface of the belt bearing assembly 700 on the lower side is flush with the upper surfaces of the upper belt conveying component 200 and the lower belt conveying component 300, the belt bearing assembly 700 on the upper side is in the center open state, the irradiation generating module 600 moves vertically after the turnover of the belt bearing assembly 700 and is in the initial position, the irradiation generating module 600 emits radiation again and performs radiation sterilization treatment on the upward side of the protective articles, so that the protective articles can be subjected to comprehensive radiation sterilization, after the sterilization is completed, the belt bearing assembly 700 on the lower side can convey the protective articles on it from the entrance 110 to the lower belt conveying component 300, and then the lower belt conveying component 300 conveys them to the next process; the entire radiation sterilization process is carried out in a relatively closed chamber, the radiation sterilization effect is increased, and radiation is avoided from being emitted outside, thereby improving the protection performance; the radiation sterilization process is automatically carried out without manual intervention, thereby improving the work efficiency.

[0049] In one embodiment, as Figures 1-3As shown, the adjusting unit comprises an adjusting screw rod 510 and an adjusting motor 520, the adjusting screw rod 510 is vertically arranged on one of the adjusting screw rods 510 and can rotate freely, the output end of the adjusting motor 520 is connected with one end of the adjusting screw rod 510, the adjusting motor 520 is provided with a screw sleeve part 530 which is screw-connected with the adjusting motor 520 at both ends, and the two screw sleeve parts 530 are connected with two bearing assemblies 700 respectively; in the embodiment, the side parts of the two bearing assemblies 700 are vertically and slidingly connected with the two rotating supports 500, the adjusting motor 520 drives the adjusting screw rod 510 to rotate, and the rotating adjusting screw rod 510 drives the two bearing assemblies 700 to move synchronously and oppositely by means of the cooperation of the two ends of the adjusting screw rod 510 with the screw sleeve parts 530, so that the two bearing assemblies 700 can move away or close to each other.

[0050] In one embodiment, as Figures 2-5 shown, the bearing assembly 700 comprises a bearing frame 710, a fixed belt winding unit 720, a bearing conveying belt 730 and a movable belt winding unit 740, the bearing frame 710 is vertically and slidingly connected with the two rotating supports 500, the bearing frame 710 is provided with a guide rod frame 750, the fixed belt winding unit 720 and the movable belt winding unit 740 are arranged on the guide rod frame 750 and located at both ends respectively, the fixed belt winding unit 720 is fixedly connected with the guide rod frame 750, the movable belt winding unit 740 can slide on the guide rod frame 750, one end of the bearing conveying belt 730 is wound on the fixed belt winding unit 720 and the other end is wound on the movable belt winding unit 740, the fixed belt winding unit 720 and the movable belt winding unit 740 can wind and release the bearing conveying belt 730, the irradiation generating module 600 is provided with an elastic damping reset unit 650 which can move along the length direction of the irradiation generating module 600, the lower side of the bearing assembly 700 is further provided with a lower blocking assembly 800, when the two bearing assemblies 700 move away from each other, the movable belt winding unit 740 in the bearing assembly 700 on the upper side is in contact with the elastic damping reset unit 650, the elastic damping reset unit 650 can limit the movable belt winding unit 740 from moving towards the fixed belt winding unit 720 in an elastic damping manner; the movable belt winding unit 740 in the bearing assembly 700 on the lower side is in contact with the lower blocking assembly 800, and the lower blocking assembly 800 can prevent the movable belt winding unit 740 from moving towards the fixed belt winding unit 720.

[0051] In the embodiment of the present application, the bearing frame 710 is a rectangular frame and the center part is covered by the bearing conveying belt 730; in the initial state, the bearing conveying belt 730 is connected to one end of the fixed belt winding unit 720 and is taut, and the other end of the bearing conveying belt 730 is wound on the movable belt winding unit 740; when the belt bearing assembly 700 located on the lower side works and conveys the protective articles thereon, the fixed belt winding unit 720 pulls the bearing conveying belt 730, the movable belt winding unit 740 cannot move due to the limitation of the lower blocking assembly 800, the bearing conveying belt 730 is gradually wound on the fixed belt winding unit 720, the protective articles move with the bearing conveying belt 730 and gradually move to the irradiation mechanism 400; when the belt bearing assembly 700 located on the upper side is opened in the center, the fixed belt winding unit 720 winds the bearing conveying belt 730, and since the movable belt winding unit 740 can slide on the guide rod frame 750 in an elastic damping manner by the elastic damping reset unit 650, when the end of the bearing conveying belt 730 connected to the movable belt winding unit 740 is in a taut state, the fixed belt winding unit 720 continues to wind the bearing conveying belt 730, the bearing conveying belt 730 pulls the movable belt winding unit 740 to move towards the fixed belt winding unit 720, the bearing conveying belt 730 is completely wound on the fixed belt winding unit 720, and the center part of the bearing frame 710 is completely opened and does not block the radiation sterilization of the protective articles by the irradiation generating module 600; after the radiation sterilization is completed, the fixed belt winding unit 720 releases the bearing conveying belt 730, the movable belt winding unit 740 winds the bearing conveying belt 730, and the movable belt winding unit 740 moves to the initial position under the action of the return elastic force of the elastic damping reset unit 650, and the bearing conveying belt 730 re-covers the center part of the bearing frame 710; thus, the two belt bearing assemblies 700 can flip the protective articles by clamping the protective articles with the bearing conveying belt 730, the bearing conveying belt 730 can avoid blocking the radiation by being wound on the movable belt winding unit 740 or the fixed belt winding unit 720, improve the sterilization effect, and also can automatically send the protective clothing after the radiation sterilization to the discharging belt conveying part 300 to complete the automatic discharging.

[0052] In one embodiment, as Figures 2-5As shown, the fixed belt winding unit 720 includes a fixed pulley frame 721, a first guide pulley 722 and a first winding pulley 723, the fixed pulley frame 721 is fixedly connected with the guide rod frame 750 at the side, the first guide pulley 722 is rotatably arranged at the end of the fixed pulley frame 721 which points to the other belt carrying assembly 700, the first winding pulley 723 is rotatably arranged at the other end of the fixed pulley frame 721, one end of the first winding pulley 723 is connected with a winding motor 724, and one end of the carrying conveyor belt 730 is connected to the outer wall of the first winding pulley 723 through the fixed pulley frame 721; in the embodiment of the application, the winding motor 724 is internally provided with a braking structure, the braking structure can limit the rotation of the output end of the winding motor 724 when the winding motor 724 is not working, the winding motor 724 is working and drives the first winding pulley 723 to rotate, the first winding pulley 723 winds the carrying conveyor belt 730 so that the movable belt winding unit 740 moves towards the fixed belt winding unit 720, after the movable belt winding unit 740 approaches the first guide pulley 722, the braking structure in the winding motor 724 works and limits the rotation of the output end of the winding motor 724, the rotation of the first winding pulley 723 caused by the pulling force between the movable belt winding unit 740 and the carrying conveyor belt 730 can be avoided, the movable belt winding unit 740 is prevented from moving back, and the irradiation generating module 600 is ensured to orderly perform the irradiation sterilization work; after the irradiation sterilization work is completed, the braking structure releases the limitation on the output end of the winding motor 724, the winding motor 724 no longer limits the rotation of the first winding pulley 723, so that the movable belt winding unit 740 re-winds the carrying conveyor belt 730 and moves to the initial position under the moving back force of the elastic damping reset unit 650, and the carrying conveyor belt 730 re-covers the central part of the carrying frame 710.

[0053] In one embodiment, as Figures 2-5As shown, the movable belt winding unit 740 comprises a movable pulley frame 741, a second guide pulley 742 and a second winding pulley 743, the second guide pulley 742 is slidably connected with the guide rod frame 750 at the side, the second guide pulley 742 is made of magnetic material, the guide rod frame 750 is provided with a magnet block 760 at the end away from the fixed belt winding unit 720; the second guide pulley 742 is rotatably arranged at the end of the movable pulley frame 741 towards the other belt carrying assembly 700, the second winding pulley 743 is rotatably arranged at the other end of the movable pulley frame 741, and an elastic damper is arranged between the main shaft of the second winding pulley 743 and the movable pulley frame 741; one end of the carrying conveyor belt 730 is wound around the second guide pulley 742 and connected to the second winding pulley 743; in the embodiment of the application, the magnet block 760 always has a certain magnetic attraction with the second guide pulley 742, which can ensure that the fixed belt winding unit 720 is stably arranged at one end of the guide rod frame 750; when the fixed belt winding unit 720 winds the carrying conveyor belt 730, the second winding pulley 743 rotates in an elastic damping manner and releases the carrying conveyor belt 730, after the carrying conveyor belt 730 on the second winding pulley 743 is completely released, the carrying conveyor belt 730 pulls the entire movable belt winding unit 740 to move towards the fixed belt winding unit 720 to leave a space in the center of the carrying frame 710 after overcoming the magnetic attraction from the magnet block 760 and the elastic damping action from the elastic damping reset unit 650; after the irradiation sterilization work is completed, the brake structure releases the restriction on the output end of the winding motor 724, the winding motor 724 no longer restricts the rotation of the first winding pulley 723, the second winding pulley 743 rotates back under the action of the elastic damper, and the entire movable belt winding unit 740 also moves back along the guide rod frame 750 under the pushing of the elastic damping reset unit 650, so that the carrying conveyor belt 730 is re-wound on the second winding pulley 743 and covers the carrying frame 710, in order to facilitate subsequent clamping and conveying of protective articles.

[0054] In one embodiment, as Figures 2-6As shown, the sidewall of the irradiation generating module 600 is provided with a sliding rod member 640 along the length direction thereof, the elastic damping reset unit 650 comprises a limiting frame 651 and a limiting roller 652, the limiting frame 651 is slidably connected with the sliding rod member 640 at the end thereof away from the belt carrying assembly 700, and the limiting roller 652 is rotationally arranged at the end of the limiting frame 651 towards the belt carrying assembly 700; when the two belt carrying assemblies 700 are in the state of being far away from each other, the top of the movable belt winding unit 740 in the upper belt carrying assembly 700 is in contact with the limiting roller 652; the top of the limiting frame 651 is connected with one end of the sliding rod member 640 through a reset spring 653; in the embodiment of the present application, one end of the reset spring 653 is connected with the end of the limiting frame 651 and the other end is connected with the end of the sliding rod member 640; when the movable belt winding unit 740 moves towards the fixed belt winding unit 720 due to the pulling of the carrying conveyor belt 730, the movable belt winding unit 740 will push the limiting roller 652 to move along, and the reset spring 653 is compressed; after the brake structure releases the restriction on the output end of the winding motor 724, the limiting frame 651 moves back and drives the movable belt winding unit 740 to move to the initial position due to the elastic force of the reset spring 653 recovering from deformation.

[0055] In one embodiment, as shown in Figures 2-6 As shown, the lower blocking assembly 800 comprises a lower frame body 810, a blocking frame 820 and a blocking roller 830, the two ends of the lower frame body 810 are respectively vertically slidably connected with the inner wall of the irradiation box body 100 and are connected with the turnover driving assembly 900; the blocking frame 820 is arranged at the middle position of the lower frame body 810 and the blocking roller 830 is rotationally arranged on the blocking frame 820; when the two belt carrying assemblies 700 are in the state of being far away from each other, the blocking roller 830 abuts against the side of the movable belt winding unit 740 to prevent it from moving along the guide rod frame 750; in the embodiment of the present application, when the turnover driving assembly 900 drives the rotation of the rotation support frame 500 and the two belt carrying assemblies 700, the turnover driving assembly 900 acts on the lower frame body 810 to make it vertically move to cooperate with the turnover action of the belt carrying assembly 700, so that the interference phenomenon can be avoided.

[0056] In one embodiment, as shown in Figures 2-6As shown, the irradiation generating module 600 is provided with an upper shelf body 620, the upper shelf body 620 is vertically slidably connected with the inner wall of the irradiation box body 100, the turnover driving assembly 900 comprises a turnover motor 910 and two turnover shafts 920, the two turnover shafts 920 are oppositely arranged and rotatably connected with the inner wall of the irradiation box body 100, the turnover shaft 920 is further fixedly connected with the rotating support frame 500, the output end of the turnover motor 910 is connected with one of the turnover shafts 920, the two turnover shafts 920 are provided with a support arm 930, the two ends of the support arm 930 are hingedly connected with an upper movable connecting rod 940 and a lower movable connecting rod 950, the end of the upper movable connecting rod 940 away from the support arm 930 is hingedly connected with the upper shelf body 620, and the end of the lower movable connecting rod 950 away from the support arm 930 is hingedly connected with the lower shelf body 810; in the embodiment, the turnover motor 910 drives the turnover shaft 920 to rotate, and the turnover shaft 920 drives the support arm 930 and the rotating support frame 500 to rotate, and the rotating support frame 500 drives the two belt bearing assemblies 700 to rotate; the support arm 930 acts on the upper shelf body 620 and the lower shelf body 810 through the upper movable connecting rod 940 and the lower movable connecting rod 950 respectively, the lower blocking assembly 800 and the irradiation generating module 600 are first away from each other, enough space is left for the turnover of the belt bearing assembly 700, and interference is avoided; after the rotation angle of the belt bearing assembly 700 exceeds 90 degrees, the lower blocking assembly 800 and the irradiation generating module 600 are close to each other, so that the elastic damping reset unit 650 and the blocking roller 830 can limit the movable belt winding unit 740 in the two belt bearing assemblies 700.

[0057] In one embodiment, as shown in Figures 2-6 As shown, the top of the irradiation generating module 600 is further provided with at least one upper guide rod 610, and the upper guide rod 610 can slidably penetrate through the top wall of the irradiation box body 100, the top of the upper guide rod 610 is provided with a limit stop 630, and the limit stop 630 is electrically connected with the turnover motor 910; in the embodiment, in the initial state, the two belt bearing assemblies 700 are in a horizontal state, the limit stop 630 located outside the irradiation box body 100 is in contact with the outer wall of the irradiation box body 100, and when the turnover motor 910 drives the turnover shaft 920 to rotate, the irradiation generating module 600 moves upward before the two belt bearing assemblies 700 are rotated to a vertical state; when the belt bearing assembly 700 is rotated from the vertical state to the horizontal state, the irradiation generating module 600 and the upper guide rod 610 move downward, the limit stop 630 approaches the top wall of the irradiation box body 100, and after the limit stop 630 contacts the top wall, a control signal is transmitted to the inside of the turnover motor 910, and the turnover motor 910 stops rotating, so that the rotation angle of the belt bearing assembly 700 driven by the turnover motor 910 can be accurately ensured, and accurate turnover can be realized.

[0058] The above embodiment provides a turnover type irradiation sterilization equipment, and the working principle is as follows:

[0059] 1. Initial state (loading stage)

[0060] The two belt bearing assemblies 700 are in a horizontal state and away from each other. The loading belt conveying part 200 conveys the protective articles into the irradiation box 100 and places them on the bearing conveying belt 730 of the lower belt bearing assembly 700. In the lower belt bearing assembly 700, the movable belt winding unit 740 is limited by the blocking roller 830 of the lower blocking assembly 800 and cannot move; the fixed belt winding unit 720 winds the bearing conveying belt 730 through the winding motor 724, so that the protective articles are positioned in the irradiation area.

[0061] 2. First surface irradiation sterilization

[0062] The upper belt bearing assembly 700 starts the center opening action: the fixed belt winding unit 720 winds the bearing conveying belt 730, and the movable belt winding unit 740 moves along the guide rod frame 750 to the fixed belt winding unit 720 under the elastic damping limitation of the limiting roller 652 of the elastic damping reset unit 650, until the center of the bearing frame 710 is completely opened. The irradiation generating module 600 emits downward radiation to sterilize the upper surface of the protective articles. The radiation source (integrated in the belt bearing assembly 700) assists to enhance the irradiation effect.

[0063] 3. Clamping and turning over

[0064] After the first surface sterilization is completed: the fixed belt winding unit 720 of the upper belt bearing assembly 700 releases the bearing conveying belt 730, and the movable belt winding unit 740 moves back under the action of the elastic damper and the reset spring 653, to re-cover the bearing frame 710.

[0065] Adjustment unit works: the adjustment motor 520 drives the adjustment screw member 510 to rotate, and drives the two belt bearing assemblies 700 to move close to each other synchronously through the screw sleeve part 530, to clamp the protective articles.

[0066] The turning over driving assembly 900 starts: the turning over motor 910 drives the turning over shaft 920 to rotate, to drive the rotating support frame 500 and the belt bearing assembly 700 to turn over 180°; at the same time, the upper movable connecting rod 940 and the lower movable connecting rod 950 pull the upper frame body 620 of the irradiation generating module 600 and the lower frame body 810 of the lower blocking assembly 800 to move vertically, to avoid interference. The upper guide rod 610 and the limiter 630 ensure the accuracy of the turning over angle, and when the limiter 630 contacts the top wall of the irradiation box 100, the turning over motor 910 stops.

[0067] 4. Second surface irradiation sterilization

[0068] After the turnover, the original lower side of the belt bearing assembly 700 becomes the upper side, and the carrying conveyor belt 730 is again wound by the fixed belt winding unit 720 to open the center area, so that the non-sterilized side of the protective article faces upward. The irradiation generating module 600 is reset to the initial height, and the second side is irradiated and sterilized.

[0069] 5. Discharging stage

[0070] After sterilization is completed: the upper side of the belt bearing assembly 700 closes the center area; the adjusting unit drives the two belt bearing assemblies 700 to separate, and the carrying conveyor belt 730 of the lower side of the belt bearing assembly 700 is wound by the fixed belt winding unit 720 to convey the protective article to the discharging belt conveying part 300, and the automatic discharging is completed.

[0071] The present application also provides a turnover irradiation sterilization method based on the above-mentioned turnover irradiation sterilization equipment, comprising the following steps:

[0072] Step 1: feeding stage

[0073] In the initial state, the two belt bearing assemblies 700 are in a horizontal separated state, the center of the upper side of the belt bearing assembly 700 is open, and the lower side of the belt bearing assembly 700 is aligned with the feeding belt conveying part 200; the protective article is sent into the irradiation box 100 from the entrance 110 by the feeding belt conveying part 200 and conveyed to the lower side of the belt bearing assembly 700.

[0074] Step 2: first irradiation sterilization

[0075] The upper side of the belt bearing assembly 700 remains in an open center state, so that the upper surface of the protective article is exposed below the irradiation generating module 600; the irradiation generating module 600 is started, and the radiation source emits radiation downward to irradiate and sterilize the upward side of the protective article.

[0076] Step 3: clamping and turnover

[0077] After the first irradiation is completed, the center of the upper side of the belt bearing assembly 700 is closed, and the adjusting unit drives the two belt bearing assemblies 700 to synchronously approach and clamp the protective article.

[0078] The turnover driving assembly 900 drives the rotating support 500 to rotate 180°, so that the positions of the two belt bearing assemblies 700 are interchanged, the original upper side becomes the lower side, and the original lower side becomes the upper side.

[0079] During the turnover process, the irradiation generating module 600 is synchronously vertically moved to avoid interference with the belt bearing assembly 700;

[0080] Step 4: second irradiation sterilization

[0081] After the turnover is completed, the adjusting unit drives the two belt bearing assemblies 700 to separate, at this time the side of the protective article which is not sterilized faces upward;

[0082] The center of the upper belt bearing assembly 700 is again open, the irradiation generating module 600 is reset to the initial position and started, and the other side of the protective article is irradiated and sterilized.

[0083] Step 5: discharging phase

[0084] After the second irradiation is completed, the lower belt bearing assembly 700 outputs the sterilized protective article from the other entrance 110 to the discharging belt conveying part 300 by the belt conveying mode, and the discharging belt conveying part 300 conveys the sterilized protective article to the next process.

[0085] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

Claims

1. A turnover irradiation sterilization device, comprising an irradiation box, an irradiation mechanism and two conveying modules, two opposite side walls of the irradiation box are provided with entrances and exits, the two conveying modules are respectively an upper feeding belt conveying part and a lower discharging belt conveying part, and are respectively arranged at opposite positions of the two entrances and exits, characterized in that, The irradiation mechanism is arranged inside the irradiation box and comprises rotating supports, an irradiation generating module, a turnover driving assembly and two symmetrically arranged belt bearing assemblies; The rotating supports are two and symmetrically arranged with the center line of the conveying module as the symmetric center. The rotating supports are rotationally connected with the inner wall of the irradiation box and are driven to rotate by the turnover driving assembly; The two belt bearing assemblies are located between the two rotating supports. One of the rotating supports is provided with an adjusting unit connected with the two belt bearing assemblies. The adjusting unit can drive the two belt bearing assemblies to move in the vertical direction in a synchronous and reverse manner. The middle part of the upper belt bearing assembly can be opened and closed. The lower belt bearing assembly can convey the sterilized protective articles to the lower belt conveying part in a belt conveying manner. When the two belt bearing assemblies contact with each other, the two belt bearing assemblies can clamp the protective articles thereon. The irradiation generating module is located above the belt bearing assembly and is connected with the turnover driving assembly. When the turnover driving assembly drives the rotating supports to turn over so that the two belt bearing assemblies are turned over, the irradiation generating module can move vertically in cooperation with the turnover action of the belt bearing assembly. The irradiation generating module has a radiation source inside for emitting radiation downward. The belt bearing assembly comprises a bearing frame, a fixed belt winding unit, a bearing conveying belt and a movable belt winding unit. The bearing frame is vertically slidably connected with the two rotating supports. The bearing frame is provided with a guide rod frame. The fixed belt winding unit and the movable belt winding unit are arranged on the guide rod frame and are located at two ends thereof, respectively. The fixed belt winding unit is fixedly connected with the guide rod frame. The movable belt winding unit can slide on the guide rod frame. The bearing conveying belt is wound on the fixed belt winding unit at one end and is wound on the movable belt winding unit at the other end. The fixed belt winding unit and the movable belt winding unit can wind and release the bearing conveying belt. The irradiation generating module is provided with an elastic damping reset unit which can elastically and dampingly move along the length direction of the irradiation generating module. The lower side of the belt bearing assembly is further provided with a lower blocking assembly. When the two belt bearing assemblies move away from each other, the movable belt winding unit in the upper belt bearing assembly contacts with the elastic damping reset unit. The elastic damping reset unit can elastically and dampingly limit the movable belt winding unit from moving towards the fixed belt winding unit. The movable belt winding unit in the lower belt bearing assembly contacts with the lower blocking assembly which can prevent the movable belt winding unit from moving towards the fixed belt winding unit.

2. The turn- over irradiation sterilization apparatus according to claim 1, characterized by The adjusting unit comprises an adjusting screw and an adjusting motor. The adjusting screw is vertically arranged on one of the adjusting screws and can rotate freely. The output end of the adjusting motor is connected with one end of the adjusting screw. The adjusting motor is provided with screw nut portions which are screw-connected with the two belt bearing assemblies, respectively.

3. The turntable irradiation sterilization apparatus according to claim 2, wherein The fixed belt winding unit comprises a fixed belt wheel frame, a first guide belt wheel and a first winding belt wheel. The fixed pulley frame side is fixedly connected with the guide rod frame, the first guide pulley is rotatably arranged at the end of the fixed pulley frame which is directed to the other belt bearing assembly, the first winding pulley is rotatably arranged at the other end of the fixed pulley frame, one end of the first winding pulley is connected with a winding motor, and one end of the bearing conveyor belt is wound around the outer wall of the first winding pulley.

4. The turntable irradiation sterilization apparatus according to claim 3, wherein The movable belt winding unit comprises a movable pulley frame, a second guide pulley and a second winding pulley. The second guide pulley side is slidably connected with the guide rod frame, the second guide pulley is made of magnetic material, and a magnet block is arranged at the end of the guide rod frame away from the fixed belt winding unit. The second guide pulley is rotatably arranged at the end of the movable pulley frame which is directed to the other belt bearing assembly, the second winding pulley is rotatably arranged at the other end of the movable pulley frame, and an elastic damper is arranged between the main shaft of the second winding pulley and the movable pulley frame; one end of the bearing conveyor belt is wound around the second guide pulley and connected to the second winding pulley.

5. The turntable irradiation sterilization apparatus as claimed in claim 2, wherein The side wall of the irradiation generating module is provided with a sliding rod along the length direction thereof; The elastic damping reset unit comprises a limiting frame and a limiting roller, the end of the limiting frame away from the belt bearing assembly is slidably connected with the sliding rod, and the limiting roller is rotatably arranged at the end of the limiting frame which is directed to the belt bearing assembly; When the two belt bearing assemblies are in the state of moving away from each other, the top of the movable belt winding unit in the upper belt bearing assembly is in contact with the limiting roller; the top of the limiting frame and one end of the sliding rod are connected through a reset spring.

6. The turntable irradiation sterilization apparatus according to claim 5, wherein The lower blocking assembly comprises a lower frame body, a blocking frame and a blocking roller; The two ends of the lower frame body are respectively vertically slidably connected with the inner wall of the irradiation box body and connected with the turnover driving assembly; The blocking frame is arranged at the middle position of the lower frame body, and the blocking roller is rotatably arranged on the blocking frame; when the two belt bearing assemblies are in the state of moving away from each other, the blocking roller abuts against the side of the movable belt winding unit to prevent it from moving along the guide rod frame.

7. The turntable irradiation sterilization apparatus according to claim 6, wherein An upper frame body is arranged on the irradiation generating module, and the two ends of the upper frame body are vertically slidably connected with the inner wall of the irradiation box body; The turnover driving assembly comprises a turnover motor and two turnover shafts; The two turnover shafts are oppositely arranged and rotatably connected with the inner wall of the irradiation box body, the turnover shafts are fixedly connected with a rotating support frame, the output end of the turnover motor is connected with one of the turnover shafts, the two turnover shafts are provided with a support arm, and the two ends of the support arm are hingedly connected with an upper movable link and a lower movable link; one end of the upper movable link away from the support arm is hingedly connected with the upper frame body, and the end of the lower movable link away from the support arm is hingedly connected with the lower frame body.

8. The turntable irradiation sterilization apparatus according to claim 7, wherein At least one upper guide rod is further arranged on the top of the irradiation generating module, the upper guide rod slidably penetrates through the top wall of the irradiation box body, a limiting device is arranged on the top of the upper guide rod, and the limiting device is electrically connected with the turnover motor.

9. A process for retort sterilization, characterized by, The turnover irradiation sterilization equipment according to any one of claims 1-8 comprises the following steps: Step 1: loading stage In the initial state, the two belt bearing assemblies are in a horizontal separation state, the center of the upper belt bearing assembly is open, and the lower belt bearing assembly is aligned with the loading belt conveying part; the protective articles are sent into the irradiation box body through the loading belt conveying part from the entrance and exit and conveyed to the lower belt bearing assembly; Step 2: first irradiation sterilization In the initial state, the two belt bearing assemblies are in a horizontal separation state, the center of the upper belt bearing assembly is open, and the lower belt bearing assembly is aligned with the loading belt conveying part; the protective articles are sent into the irradiation box body through the loading belt conveying part from the entrance and exit and conveyed to the lower belt bearing assembly; The upper belt bearing assembly keeps the center open, so that the upper surface of the protective product is exposed below the irradiation module; the irradiation module is started, and the radiation source emits radiation downward to irradiate and sterilize the upward side of the protective product; Step 3 clamping and turning over After the first irradiation is completed, the center of the upper belt bearing assembly is closed, and the adjusting unit drives the two belt bearing assemblies to approach synchronously to clamp the protective product; The turning over driving assembly drives the rotating support to rotate 180°, so that the positions of the two belt bearing assemblies are interchanged, the original upper side becomes the lower side, and the original lower side becomes the upper side; during the turning over process, the irradiation module moves vertically synchronously to avoid interference with the belt bearing assembly; Step 4 second irradiation sterilization After the turning over is completed, the adjusting unit drives the two belt bearing assemblies to separate, and at this time, the side of the protective product that has not been sterilized faces upward; The center of the upper belt bearing assembly is opened again, the irradiation module is reset to the initial position and started, and the other side of the protective product is irradiated and sterilized; Step 5 unloading stage After the second irradiation is completed, the lower belt bearing assembly outputs the sterilized protective product from the other entrance to the unloading belt conveying part through the belt conveying mode, and the unloading belt conveying part conveys the sterilized protective product to the next process.

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