A conveying device for electron accelerator irradiation sterilization

Abstract

A conveying device for electron accelerator irradiation sterilization includes a pallet body, a frame, a conveying chain, a motor, a guide cylinder device, a chain guide tensioning device, and a transmission mechanism; a limit groove is installed on the left and right sides of the frame; after the motor is installed at the front end of the frame, a driving sprocket is installed on the motor shaft; the transmission mechanism includes a bearing seat, a shaft rod, and a driven sprocket, the shaft rod is sleeved in the inner ring of the bearing of the bearing seat, and the driven sprocket is installed on the side end of the shaft rod; two sets of transmission mechanism bearing seats are respectively installed at the front end and the middle of the rear end of the frame; two conveying chains are respectively sleeved on the left and right sides of the two sets of transmission mechanism driven sprockets; two sets of chain guide tensioning devices are respectively installed on both sides of the lower end of the frame; the pallet body includes a lower plate, a guardrail, a guide wheel and a fixed chain gear; two sets of guide cylinder devices are respectively installed at the front and rear of the frame. The present invention ensures that the goods in the pallet body will not be damaged due to overheating due to long irradiation time. The present invention has good application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of electric conveyor line equipment, in particular to a conveying device used for electron accelerator irradiation sterilization. Background Art

[0002] Electric conveyor line equipment (including roller type and conveyor belt type, etc.) is a device that transports objects from one station to another. In actual production, some products or goods need to be irradiated and sterilized by electron accelerator irradiation equipment. The electron accelerator irradiation equipment is installed at the upper end of the irradiation position of the electric conveyor line, and then irradiates and sterilizes the products or goods passing through its lower end.

[0003] When the electron accelerator irradiation equipment is irradiated and sterilized, the particle beam temperature generated under the lower beam is extremely high, so the product or goods staying under the beam for a long time is very likely to be burned, and even cause a fire. At present, the electric conveyor line equipment used in combination with the electron accelerator irradiation equipment in the industry generally adopts electric stainless steel roller conveyor equipment. When conveying products or goods to the irradiation equipment for irradiation, since the two ends of the pallet for transporting goods do not have a limit mechanism, when the pallet moves on the conveyor line, the left and right lateral positions are skewed, which easily causes the guard plates on both sides of the pallet and the electric conveyor line to collide and block, thereby causing the chuck phenomenon. When the chuck is at the lower end of the irradiation equipment, then at this moment, the pallet and the products or goods inside it are damaged by excessive heat due to the slow movement speed and the long irradiation time. In addition, when the pallet conveys products or goods, it is possible that the lower end of the pallet will slip between the upper end of the roller and the movement speed will slow down (especially at the lower end of the pallet or the upper end of the roller due to various reasons. Liquids including lubricating oil adhere to the lower end of the pallet or the upper end of the roller). This will also cause the irradiated products or goods to be damaged due to excessive heating time. Finally, due to the small spacing between the transmission rollers of the electric stainless steel roller conveyor, the rollers near the lower end of the irradiation equipment are exposed to high temperature for a long time, and the roller bearings are not easy to dissipate heat, which affects the lubrication effect and is easily damaged after long-term use, which has a great impact on the conveyed products or goods. In summary, it is particularly necessary to provide a conveying device that does not use rollers as a conveying carrier, can prevent the pallet from slipping and chucking when conveying goods or products, and can effectively ensure that the products or goods achieve a good irradiation effect. Summary of the invention

[0004] In order to overcome the disadvantages that the existing electric stainless steel roller conveying equipment is prone to chuck and slip due to structural limitations when used in combination with electron accelerator irradiation equipment, which will cause the irradiated products or goods to be easily overheated and damaged, the present invention provides a conveying device for electron accelerator irradiation sterilization that does not use rollers as carriers for conveying pallet bodies. Under the joint action of relevant mechanisms in application, the two side ends of the pallet body are engaged and clamped on the transmission chains on the upper parts of the two side ends of the frame through sprockets for forward conveyance. The engagement between the two has a good limiting and guiding effect on the pallet body and the products or goods inside it, and can effectively prevent the occurrence of slipping or chuck of the pallet body, thereby ensuring that when the pallet body is transported to the lower end of the electron accelerator irradiation equipment for irradiation, it will not be damaged due to overheating due to excessive irradiation time.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A conveying device for use in electron accelerator irradiation sterilization, comprising a tray body, a frame, a conveying chain, a motor, a guide cylinder device, a chain guide tensioning device, and a transmission mechanism; the characteristic is that the frame is a hollow structure, and a limit groove is installed on the upper part of the left and right side ends of the frame; the motor is installed at the lower end of the frame, and a driving sprocket is installed on the rotating shaft of the motor; the chain guide tensioning device, the guide cylinder device, and the transmission mechanism each have two identical sets, and each set of the transmission mechanism includes a bearing seat, a shaft rod, and a driven sprocket, and there are at least two driven sprockets, the shaft rod is installed in the inner ring of the bearing of the bearing seat, and the two driven sprockets are respectively installed on the left and right sides of the shaft rod; the bearing seats of the two sets of transmission mechanisms are respectively installed on the frame At the front end and the rear end, a driving sprocket is also installed on one side of the shaft rod of one set of the transmission mechanism, and the driving sprocket and the active sprocket of the motor are connected by a chain; there are two conveying chains, and the two conveying chains are respectively sleeved on the outer sides of the driven sprockets on the left and right sides of the shaft rods of the two sets of transmission mechanisms; the two sets of chain guide tensioning equipment are respectively installed on both sides of the lower end of the frame; the pallet body includes a lower disk body, a guardrail, a guide wheel and a fixed sprocket, the guardrail is installed at the upper end of the lower disk body, and there are multiple guide wheels and fixed sprockets. The multiple guide wheels and fixed sprockets are respectively installed at the left and right side ends of the lower disk body, and an anti-collision block is installed at the front end of the lower disk body; the two sets of guide cylinder equipment are respectively installed at the front and rear of the frame.

[0007] Furthermore, the upper end of the transmission mechanism is lower than the height of the lower ends of the limit grooves at the left and right side ends of the frame.

[0008] Furthermore, the guide cylinder device includes a support rod and a rotating roller. The rotating roller is rotatably installed with a connecting shaft rod, the connecting shaft rod is installed on the upper end of the support rod, and the upper end of the rotating roller is higher than the lower end height of the limiting grooves on the left and right sides of the frame.

[0009] Furthermore, the fixed sprocket of the tray body is a fan-shaped structure with a plurality of vertically distributed sprocket teeth; the guide wheel includes a bearing and a fixed plate, and the bearing is installed under the fixed plate for parallel rotation.

[0010] Furthermore, the spacing between the fixed chain gears at the lower left and right ends of the pallet body is consistent with the spacing between the upper middle ends of the conveying chains on the left and right sides of the upper part of the frame, and the spacing between the outer ends of the guide wheel bearings at the left and right ends of the lower plate and the two side ends of the guardrail is smaller than the spacing between the inner sides of the conveying chains on the left and right sides of the upper end of the frame.

[0011] Furthermore, the upper and lower parts of the two conveyor chains are respectively located between the inner sides of the upper and lower ends of two limiting grooves at the upper left and right sides of the frame and are spaced apart.

[0012] Furthermore, each set of chain guide tensioning equipment includes a movable sprocket and a fixed sprocket, and a connecting plate is installed in the middle of the rear end of the limiting grooves on the left and right sides of the frame; the fixed sprockets of the two sets of chain guide tensioning equipment are rotatably installed on the upper parts of the two connecting plates, and the movable sprockets of the two sets of chain guide tensioning equipment are movably installed on the lower parts of the two connecting plates, and the movable sprockets and fixed sprockets of the two sets of chain guide tensioning equipment and the lower ends of the conveying chains on the left and right sides of the frame are respectively surrounded and meshed.

[0013] The beneficial effect of the present invention is that the present invention does not use rollers as carriers for conveying the pallet body, and the electron accelerator irradiation equipment is installed at the middle upper end of the present invention, and the present invention is horizontally located between two sets of ordinary electric stainless steel roller conveying equipment. In application, after the pallet body output by the electric stainless steel roller conveying equipment of the previous process and the goods or products loaded at the upper end thereof are guided by the rear end guide cylinder equipment into the two limit grooves at the upper left and right ends of the frame, the sprocket teeth at the lower part of the four fixed chain gears at the left and right ends of the pallet body will be respectively stuck in the chain grooves of the two conveying chains, so that the pallet body can be effectively fixed to the conveying chain, and driven by the conveying chain to the lower end of the electron accelerator irradiation equipment for irradiation sterilization, and then driven by the conveying chain to the front end to enter the upper part of the conveying roller of another set of electric stainless steel roller conveying equipment to the next process. In the present invention, both side ends of the pallet body are meshed and stuck on the conveying chain through fixed chain gears for forward conveying, and the meshing between the two plays a good role in limiting and guiding the pallet body and the products or goods inside it, which can effectively prevent the occurrence of phenomena such as slipping or chuck of the pallet body, thereby ensuring that when the pallet body is transported to the lower end of the electron accelerator irradiation equipment for irradiation, it will not be damaged due to overheating due to long irradiation time. The lower end of the electron accelerator irradiation equipment of the present invention has no moving parts, so there is no disadvantage of damage to the rotating parts due to long irradiation time. Based on the above, the present invention has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the overall left-side stereoscopic structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the tray body of the present invention.

[0017] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present invention from top view. DETAILED DESCRIPTION

[0018] Figure 1 , 2As shown in , 3, a conveying device for electron accelerator irradiation sterilization includes a PLC (not shown in the figure, the PLC control power output end and the motor power input end are connected via a wire), a tray body 1, a frame 2, an annular conveying chain 3, a motor 4, a guide cylinder device 5, a chain guide tensioning device 6, and a transmission mechanism 7; the frame 2 is formed by welding of steel sections and a combination of screws and nuts. The frame 2 is a rectangular structure and the middle part is a rectangular hollow structure. A "[" and "]" type limit groove 21 is longitudinally installed on the upper part of the left and right sides of the frame 2 through screws and nuts; the front support plate 22 and the rear support plate 23 are installed on the inner side of the upper part of the front end and the upper inner side of the rear end of the frame 2 respectively through screws and nuts. The support plate 23, the motor 4 is transversely installed on the rear part of the front support plate 22 through a screw nut, a driving sprocket (not shown in the figure) is tightly installed on the right end of the rotating shaft of the motor 4, and the upper end of the motor 4 is installed with a protective shell 41 through a screw nut; the chain guide tensioning device 6, the guide cylinder device 5, and the transmission mechanism 7 each have two identical sets, and each set of the transmission mechanism 7 includes two bearing seats 71, a shaft rod 72, and a driven sprocket 73. There are two identical driven sprockets 73, and the shaft rod 72 is transversely tightly sleeved in the inner rings of the bearings of the two bearing seats 71. The left and right parts of the shaft rod 72 are respectively located on the outer sides of the left and right ends of the two bearing seats 71, and the middle parts of the two driven sprockets 73 are respectively tightly sleeved on the outermost left and right sides of the shaft rod 72. end; the two bearing seats 71 of the two sets of transmission mechanisms are respectively installed on the front part of the front support plate 22 and the upper sides of the rear support plate 23 through screw nuts, and a driving sprocket 8 is also installed on the right side of the shaft rod of the front set of transmission mechanisms (5 cm apart from the driven sprocket on the right end), and the driving sprocket 8 and the active sprocket 4 of the motor are connected through a chain 9; there are two conveying chains 3, and the front and rear ends of the two conveying chains 3 are respectively sleeved on the outer sides of the driven sprockets 73 on the left and right sides of the shaft rods of the two sets of transmission mechanisms 7 at the front and rear ends of the frame 1; the two sets of chain guide tensioning devices 6 are installed on both sides of the upper and lower ends of the rear side end of the frame 2 through screw nuts; the pallet body 1 includes a rectangular lower plate 101, a guardrail 102, and a guide wheel 1 03 and fixed sprocket 104, the lower part of the guardrail 102 is welded to the upper end of the lower plate 101, there are eight guide wheels 103 and four fixed sprockets 104, among which four guide wheels 103, two fixed sprockets 104 and other four guide wheels 103, other two fixed sprockets 104 are respectively installed at the left and right side ends of the lower plate 101 at a certain equal distance, and rectangular anti-collision blocks 105 (which play a buffering role to prevent objects from directly colliding with the pallet body and being damaged) are also installed at the front ends of the left and right parts of the lower plate 101 through screw nuts; the support rods 51 of the two sets of guide cylinder equipment are respectively installed in the front middle part of the front support plate 22 and the rear middle part of the rear support plate 23.

[0019] Figure 1 , 2As shown in Figures 3 and 4, the upper ends of the protective shell 41 and the transmission mechanism 7 are lower than the lower ends of the limit grooves 21 on the left and right sides of the frame. The guide cylinder device 5 includes two support rods 51 and a rotating roller 52. A bearing is tightly mounted in the middle of each of the two side ends of the rotating roller 52. A connecting shaft 53 is tightly mounted in the inner ring of the two bearings. The left and right outer ends of the connecting shaft 53 are respectively welded to the inner side of the upper ends of the two support rods 51. The upper end of the rotating roller 52 is slightly higher than the lower end of the limit grooves 21 on the left and right sides of the frame. After the pallet body 1 enters the frame, the upper end of the rotating roller 52 is at the same height as the lower end of the rectangular lower plate 101 of the pallet body 1. The fixed sprocket 101 of the tray body is a fan-shaped structure with three vertically distributed sprocket teeth. The fixed sprocket 101 is installed on a "┑"-shaped fixing frame 106. The fixing frames 106 of the eight fixed sprockets are respectively installed on the left and right side ends of the lower disk body 101; the guide wheel 103 includes a bearing 1031 and a "┑"-shaped fixing plate 1032. A screw is vertically welded on the middle part of the fixing plate 1032. The screw is tightly sleeved in the inner ring of the bearing. A fixing nut is installed at the lower end of the screw. The bearing can rotate along the shaft rod. The fixing plates 1032 of the four guide wheels are installed on the left and right side ends of the lower disk body 101. The spacing between the fixed sprockets 104 at the lower left and right sides of the tray body 101 is consistent with the spacing between the upper middle parts of the conveyor chains 3 at the upper left and right sides of the frame 2. The spacing between the outer ends of the bearings of the guide wheels 103 at the left and right sides of the lower tray 101 and the two side ends of the guardrails 102 is smaller than the spacing between the inner sides of the conveyor chains 3 at the upper left and right sides of the frame. The upper and lower parts of the two conveyor chains 3 are respectively located between the inner sides of the upper and lower ends of the two limit grooves 21 at the upper left and right sides of the frame, and are spaced a certain distance apart.Each set of chain guide tensioning equipment includes a movable sprocket 61 and two fixed sprockets 62. A bearing is respectively tightly sleeved in the middle of the movable sprocket 61 and the fixed sprocket 62. There is a rectangular opening in the middle of the rear end of the upper limit groove on the left and right sides of the frame 1. A "T"-shaped connecting plate 63 is installed in the opening of each of the two limit grooves through a screw nut. A shaft rod is welded horizontally at the front and rear ends of the upper inner side ends of the connecting plate 63. The inner rings of the bearings of the two fixed sprockets 62 of each set of chain guide tensioning equipment are respectively tightly sleeved in the middle of the outer ends of the two shaft rods of the two connecting plates 63 (the fixed sprocket 62 can rotate along the shaft rod through the bearing). There is a rectangular opening groove 64 in the middle of the lower end of each connecting plate 63. A screw is tightly sleeved in the middle of the inner ring of the bearing 61, and the outer end of the screw is located in the open groove 64 of one of the connecting plates, and a fixing nut is installed at the outermost end of the screw at the opening groove 64 of the connecting plate; the conveying chain 3 at the left and right ends of the frame has a rear end section located at the upper end of the rear end fixed sprocket 62 of the two sets of chain guide tensioning equipment and meshed, a front end section is located at the upper end of the front end fixed sprocket 62 and meshed, and the lower end is located at the lower end of the movable sprocket 61 and meshed (by loosening the fixing nut to move the screw up and down, the upper and lower heights of the movable sprocket 61 of each set of chain guide tensioning equipment can be moved, thereby realizing the tension adjustment of the conveying chain 3. After adjusting downward, the conveying chain is tightened, otherwise it is loosened. After adjustment, tighten the fixing nut).

[0020] Figure 1 , 2As shown in Figures 3 and 4, the present invention does not use rollers as carriers for the conveying tray body. The electron accelerator irradiation equipment is installed at the middle upper end of the present invention (a fixed frame is provided at the right end of the middle of the frame to install the electron accelerator irradiation equipment). The present invention is located horizontally between two sets of ordinary electric stainless steel roller conveying equipment. In application, the PLC controls the motor 4 to be powered on, and the motor 4 drives the upper ends of the two conveying chains 3 to move clockwise through the driving sprocket, the driving sprocket 8, the chain 9, the shaft 72, and the two driven sprockets 73 (the transmission mechanism driven sprocket 73 at the rear end of the frame plays a follow-up role). When the pallet body 1 and the goods or products loaded on the upper end thereof outputted by the electric stainless steel roller conveyor of the previous process are guided by the rear end guide roller device 5 (the rotating roller 52 rotates) and enter between the two limit grooves 21 at the upper left and right ends of the rear end of the frame (the rotating roller 52 of the guide roller device and the upper ends of the rollers of the two sets of electric stainless steel roller conveyors are at the same height, and the rotating roller 52 of the guide roller device plays a role in rotational guidance and support for the lower end of the pallet body 101), the sprockets at the lower parts of the four fixed sprockets 104 at the left and right ends of the pallet body 101 will They are respectively stuck in the upper chain grooves of the two conveyor chains 3, so that the left and right ends of the pallet body 101 can be effectively fixed to the upper ends of the two conveyor chains 3 (the outer sides of the bearings 103 at the left and right sides of the pallet body slide against the upper inner sides of the left and right conveyor chains 3 to limit and guide the movement of the pallet body). The pallet body 101 is driven by the conveyor chains 3 to the lower end of the electron accelerator irradiation equipment to irradiate and sterilize the goods and products inside (preventing the pallet from being stuck at the lower end of the electron accelerator irradiation equipment, causing the irradiation time to be too long). Then the pallet body 1 is driven by the conveyor chain to the front end to enter the upper part of the conveyor roller of another set of electric stainless steel roller conveyor equipment and to the next process (the guide roller equipment at the front end of the frame guides and supports the lower end of the pallet body, so that the pallet body can move smoothly to the conveyor roller of another set of electric stainless steel roller conveyor equipment on the right side of the frame). In the present invention, since both side ends of the pallet body 1 are meshed and stuck on the conveying chain through the fixed chain gear 104 and conveyed forward, the meshing between the two plays a good role in limiting and guiding the pallet body 1 and the products or goods inside, and can effectively prevent the occurrence of the phenomenon such as the pallet body 1 slipping or chuck, thereby ensuring that the pallet body 1 will not be damaged due to overheating due to long irradiation time when it is transported to the lower end of the electron accelerator irradiation equipment for irradiation. The lower end of the electron accelerator irradiation equipment of the present invention has no moving parts, so there is no disadvantage of damage to the rotating parts caused by irradiation.

[0021] The main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0022] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A conveying device for electron accelerator irradiation sterilization, comprising a tray body, a frame, a conveying chain, a motor, a guide cylinder device, a chain guide tensioning device, and a transmission mechanism; characterized in that The frame is a hollow structure, and a limiting groove is installed on the upper part of the left and right side ends of the frame; the motor is installed at the lower end of the frame, and the rotating shaft of the motor is installed with a driving sprocket; the chain guide tensioning device, the guide cylinder device, and the transmission mechanism each have two identical sets, and each set of the transmission mechanism includes a bearing seat, a shaft rod, and a driven sprocket. There are at least two driven sprockets, and the shaft rod is installed in the inner ring of the bearing of the bearing seat. The two driven sprockets are respectively installed on the left and right sides of the shaft rod; the bearing seats of the two sets of transmission mechanisms are respectively installed on the front end and the rear end of the frame, and a driving sprocket is also installed on one side of the shaft rod of one set of the transmission mechanism, and the driving sprocket and the main The driving sprocket is connected by a chain; there are two conveying chains, which are respectively sleeved on the outer sides of the driven sprockets on the left and right sides of the shafts of the two transmission mechanisms; the two sets of chain guide tensioning devices are respectively installed on both sides of the lower end of the frame; the pallet body includes a lower plate, a guardrail, a guide wheel and a fixed chain gear, the guardrail is installed on the upper end of the lower plate, and there are multiple guide wheels and fixed chain gears, and the multiple guide wheels and fixed chain gears are respectively installed at intervals on the left and right side ends of the lower plate, and an anti-collision block is installed at the front end of the lower plate; the two sets of guide cylinder equipment are respectively installed at the front and rear of the frame; the upper end of the transmission mechanism is lower than the frame The height of the lower end of the left and right side limit grooves; the guide drum equipment includes a support rod and a rotating roller, and the rotating roller is rotatably installed with a connecting shaft rod, which is installed at the upper end of the support rod, and the upper end of the rotating drum is higher than the height of the lower end of the limit grooves on the left and right sides of the frame; the fixed chain gear of the pallet body is a fan-shaped structure with multiple vertically distributed sprockets; the guide wheel includes a bearing and a fixed plate, and the bearing is installed parallel and rotatably under the fixed plate; the spacing between the fixed chain gears at the lower part of the left and right side ends of the pallet body is consistent with the spacing between the upper middle ends of the conveying chains on the left and right sides of the upper part of the frame, and the spacing between the outer ends of the guide wheel bearings at the left and right sides of the lower plate and the two side ends of the guardrail is smaller than the frame The spacing between the inner sides of the conveying chains on the left and right parts of the upper end of the frame; the upper and lower parts of the two conveying chains are respectively located between the inner sides of the upper and lower ends of the two limit grooves on the upper part of the left and right sides of the frame and are spaced apart; each set of chain guide tensioning equipment includes a movable sprocket and a fixed sprocket, and a connecting plate is installed in the middle of the rear end of the limit grooves on the left and right sides of the frame; the fixed sprockets of the two sets of chain guide tensioning equipment are respectively rotatably installed on the upper parts of the two connecting plates, and the movable sprockets of the two sets of chain guide tensioning equipment are respectively movably installed on the lower parts of the two connecting plates, and the movable sprockets, fixed sprockets of the two sets of chain guide tensioning equipment and the lower ends of the conveying chains on the left and right sides of the frame are respectively surrounded and meshed.

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