Medical radioactive isotope production device
By designing a closed-loop gas storage mechanism and fixed support components for cutting, the problems of low efficiency and pollution in cutting multiple targets in radioactive isotope production devices were solved, achieving efficient and safe multi-target cutting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHENGDU XINLUJIA TECHNOLOGY CO LTD
- Filing Date
- 2024-11-04
- Publication Date
- 2026-05-15
AI Technical Summary
Existing medical radioisotope production equipment suffers from problems such as radioactive gas leakage, unbroken cutting threads, easy deformation, flying chips and residues, and inability to cut multiple targets simultaneously on the same machine when cutting irradiated targets, resulting in low production efficiency.
A medical radioactive isotope production device was designed. It uses a gas storage mechanism to drive a cutting mechanism for closed cutting. Combined with a fixing component and a support component, it can simultaneously cut multiple irradiation targets, preventing radioactive gas from overflowing and chips from flying. It also avoids the cutting blocks from sticking together and deforming by extrusion cutting.
This technology enables the simultaneous cutting of multiple irradiated targets, preventing radioactive contamination, improving production efficiency, ensuring cutting quality, and avoiding environmental pollution.
Smart Images
Figure CN122033322A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of isotope preparation technology, and more specifically to a medical radioactive isotope production apparatus. Background Technology
[0002] The primary source of medical radioactive isotopes is the production of isotope targets irradiated by reactors. The safe dismantling of these targets after irradiation is a key technology for the efficient acquisition of medical radioactive isotopes. Specifically, fission reactors currently used in medical institutions... 99 One method of producing Mo is to contain... 235 The U-shaped target material was encased in a stainless steel shell to form a tubular target, which was then sent into the reactor for irradiation. 235 U captures neutrons, undergoes nuclear reactions, and acquires high specific activity through complex chemical processing techniques. 99 Mo, although this production method is commercialized and technologically mature, is still limited for commonly used stainless steel shells with a peeling thickness of about 1 mm and a target interlayer thickness of about 2 mm. 235 U-shaped targets, despite their current production technology, still suffer from several drawbacks during the cutting process. These include easy deformation of the targets, unbroken threads in the cut pieces, flying chips and residues, and leakage of radioactive gases. Furthermore, they are prone to problems such as cutting machine malfunctions, difficulties in filling dissolution bottles with unbroken threads and dissolving, and environmental radioactive pollution, which significantly impact the production of U-shaped targets. 99 The safe and efficient production of Mo raw materials is also a concern. Furthermore, existing equipment can only cut one irradiation target at a time during the cutting process, making it impossible to cut multiple irradiation targets simultaneously on the same machine, which leads to lower isotope production efficiency. Summary of the Invention
[0003] This invention addresses the problems of radioactive gas leakage, unbroken cutting threads, easy deformation, flying chips and residues, and reduced production efficiency caused by the inability to cut multiple irradiation targets simultaneously on the same machine in existing irradiation target cutting devices. It provides a medical radioactive isotope production device capable of simultaneously cutting multiple irradiation targets, enclosing the cutting process to prevent radioactive gas leakage, and achieving chip-free cutting through extrusion cutting, directly avoiding flying chips and residues, as well as the problems of unbroken cutting threads and easy deformation caused during irradiation target cutting.
[0004] The technical solution adopted in this invention is:
[0005] A medical radioisotope production apparatus is provided, comprising:
[0006] The system comprises: a support frame with a cylinder at the top and a support platform at the bottom; a first through hole on the side wall of the cylinder; a tank at one end of the cylinder with a second through hole communicating with the first through hole; a cutting mechanism slidably connected inside the cylinder through the first and second through holes, with the cutting end of the cutting mechanism located inside the tank; a gas storage mechanism located on the support platform, with a first and second vent on the side wall of the cylinder, communicating with the inside of the cylinder through the first and second vents; a sample injector cylindrical in shape, with an inlet and an outlet on the side wall of the tank, communicating with one end of the sample injector through the inlet; a fixing component for fixing the irradiation target inserted into the free end of the sample injector; and a dissolving bottle placed on the support platform connected to the outlet; and a support assembly located on the side wall of the tank, corresponding to the inlet, for adjusting the cutting length of the irradiation target.
[0007] In some embodiments of the present invention, the cutting assembly includes a piston, a connecting rod, and a cutter. The piston is slidably connected inside the cylinder. The connecting rod is disposed at the end of the piston facing the first through hole. The connecting rod is slidably connected to both the first and second through holes. The cutter is disposed on the free end of the connecting rod and is located inside the tank.
[0008] In some embodiments of the present invention, the gas storage mechanism includes a gas storage tank, a first connecting pipe, a second connecting pipe, a first branch pipe, a second branch pipe, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, and a pressure gauge. The gas storage tank is placed on a support platform. The gas inlet of the gas storage tank is connected to the first connecting pipe, and the gas outlet of the gas storage tank is connected to the second connecting pipe. One end of the first connecting pipe is connected to a first vent on a cylinder, and the other end is connected to an air pump. One end of the second connecting pipe is connected to a second vent on a cylinder. The first solenoid valve is located on the first connecting pipe, and... The first solenoid valve is located between the air inlet and the first vent of the gas storage tank; the second solenoid valve is located at the connection between the first connecting pipe and the air pump; the third solenoid valve is located on the second connecting pipe and between the air outlet and the second vent of the gas storage tank; the first branch pipe is located at the end of the first connecting pipe near the first vent, and the first branch pipe is connected to the first connecting pipe through the fourth solenoid valve; the second branch pipe is located at the end of the second connecting pipe near the second vent, and the second branch pipe is connected to the second connecting pipe through the fifth solenoid valve; the pressure gauge is located on the first connecting pipe and between the first solenoid valve and the second solenoid valve.
[0009] In some embodiments of the present invention, the fixing assembly includes a pin, a fixing rod, a connecting rope, and a pressure block. The pin is frustoconical, and the inner wall of the injector fits against the outer wall of the pin. The fixing rod is coaxially arranged with the pin and is located at the end of the pin facing the container. A first gap exists between the fixing rod and the inner wall of the injector for placing the irradiation target. One end of the connecting rope is located at the end of the pin facing the container, and the pressure block is located at the other end of the connecting rope for fixing the irradiation target.
[0010] In some embodiments of the present invention, the support assembly includes a screw, a support pad, an inclined plate, a crossbar, and a torsion spring. A screw hole coaxial with the injector is provided on the side wall of the tank. The screw is rotatably connected to the screw hole. The support plate is disposed at the end of the screw facing the injector. The crossbar is disposed on the outer wall of the support plate. A sliding hole is provided on the side wall of the inclined plate. The crossbar is located inside the sliding hole. The torsion spring is sleeved on the crossbar. One end of the torsion spring abuts against the support plate, and the other end abuts against the inclined plate. The relative distance between the width of the support plate and the inner wall of the injector is greater than the distance between the central axis of the irradiation target and the inner wall of the injector.
[0011] In some embodiments of the present invention, a first spring is provided on the inner wall of the cylinder at the first through hole, and a second spring symmetrical to the first spring is also provided on the inner wall of the cylinder. The first spring is sleeved on the connecting rod. A first sensor and a second sensor are provided on the inner wall of the cylinder. The first sensor is located between the first vent and the piston, and the second sensor is located between the second vent and the piston. Both the first sensor and the second sensor are signal connected to the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, and the fifth solenoid valve.
[0012] In some embodiments of the present invention, the free end of the fixing rod does not exceed the inner wall of the tank, and there is a second gap between the fixing rod and the irradiation target located in the first gap, and the second gap is not greater than 5mm.
[0013] In some embodiments of the present invention, the screw is provided with a handle on the outer part of the can body, and a scale parallel to the central axis of the screw is provided on the handle. The scale passes through the side wall of the can body and extends into the interior of the can body, and the zero mark of the scale is located at the connection with the handle.
[0014] In some embodiments of the present invention, the dissolving bottle is provided with an exhaust port, and a filter connected to the exhaust port of the dissolving bottle is placed on the support platform.
[0015] In some embodiments of the present invention, a lifting platform for controlling the raising and lowering of the dissolving bottle is provided on the support platform.
[0016] The beneficial effects of this invention are:
[0017] 1. The gas storage mechanism drives the cutting mechanism, which cuts the irradiated target located between the sample injector and the support assembly. The fixing assembly within the sample injector secures the target, preventing it from tipping over and affecting the cutting dimensions. The cut target is then collected in a connected dissolution bottle through the outlet of the tank. Throughout this process, the interconnected cylinder, gas storage mechanism, tank, sample injector, and dissolution bottle, along with the fixing assembly inserted into the sample injector, ensure that the entire irradiated target remains enclosed during cutting, preventing the leakage of radioactive gas, the dispersion of chips and residue, and thus avoiding radioactive contamination of the environment.
[0018] 2. Remove the fixing component inserted into the injector, then adjust the feed distance of the support component on the tank to control the cutting length of the irradiated target. Then, multiple irradiated targets can be placed into the injector at one time. Since the injector is cylindrical, the multiple irradiated targets inside the injector can be circumferentially distributed with the central axis of the injector as the center. Then, insert the fixing component into the injector and fix the multiple irradiated targets inside the injector to prevent them from tilting. Finally, the gas storage mechanism drives the cutting mechanism to cut the multiple irradiated targets supported by the support component. The cutting of multiple irradiated targets can be completed at one time, improving production efficiency. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of a medical radioactive isotope production device.
[0021] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;
[0022] Figure 3 for Figure 1 A magnified view of a portion of point B in the middle;
[0023] Figure 4 This is a top view of the sloping plate.
[0024] Figure label:
[0025] 1-Support platform, 2-Bracket, 3-Cylinder, 30-First through hole, 31-First vent, 32-Second vent, 33-Piston, 34-Connecting rod, 35-Cutter, 36-First sensor, 37-Second sensor, 38-First spring, 39-Second spring, 4-Air storage mechanism, 40-Air storage tank, 401-Air inlet, 402-Air outlet, 41-First connecting pipe, 411-Pressure gauge, 42-Second connecting pipe, 43-First branch pipe, 44-Second branch pipe, 45-First solenoid valve, 46-Second solenoid valve, 47-Third solenoid valve, 48- Fourth solenoid valve, 49-Fifth solenoid valve, 5-Tank body, 50-Second through hole, 51-Inlet, 52-Outlet, 53-Screw hole, 54-Third sensor, 55-Handle, 56-Screw, 57-Support plate, 58-Scale, 59-Inclined plate, 590-Sliding hole, 591-Crossbar, 592-Torsion spring, 6-Injector, 60-Pin, 61-Fixing rod, 62-Connecting rope, 63-Pressure block, 64-First gap, 65-Second gap, 66-Irradiation target, 67-Fixing ring, 7-Dissolving bottle, 8-Filter, 9-Lifting platform, 10-Lid. Detailed Implementation
[0026] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0027] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention.
[0028] The embodiments of the invention will now be described in detail with reference to the accompanying drawings.
[0029] Example
[0030] like Figure 1 As shown, this embodiment provides a medical radioisotope production apparatus, including:
[0031] The support 2 has a cylinder 3 at its top and a support platform 1 at its bottom. A first through hole 30 is opened on the side wall of the cylinder 3. A tank 5 is provided at one end of the cylinder 3. A second through hole 50 is opened on the tank 5, which communicates with the first through hole 30. A cutting mechanism is slidably connected inside the cylinder 3 through the first through hole 30 and the second through hole 50. The cutting end of the cutting mechanism is located inside the tank 5.
[0032] The gas storage mechanism 4 is located on the support platform 1. The side wall of the cylinder 3 is also provided with a first air inlet 31 and a second air inlet 32. The gas storage mechanism 4 is connected to the inside of the cylinder 3 through the first air inlet 31 and the second air inlet 32.
[0033] The sampler 6 is cylindrical. The side wall of the tank body 5 is provided with an inlet 51 and an outlet 52. The tank body 5 is connected to one end of the sampler 6 through the inlet 51. A fixing component for fixing the irradiation target 66 is inserted into the free end of the sampler 6. A dissolving bottle 7 placed on the support platform 1 is connected to the outlet 52.
[0034] A support assembly is provided on the side wall of the tank 5 and corresponds to the feed port 51, and is used to adjust the cutting length of the irradiation target 66.
[0035] In this embodiment, the tank 5 has a square tube shape inside, meaning that all four corners of the internal space are 90°. The tank 5 can be fastened to the outer wall of the cylinder 3 with bolts, or it can be made into an integral structure with the cylinder 3, which helps to prevent the leakage of radioactive gases and dust during the cutting process. The gas storage mechanism 4 drives the cutting mechanism to operate. The operating cutting mechanism can cut the irradiation target 66 located between the sample injector 6 and the support assembly. The fixing assembly located in the sample injector 6 can fix the irradiation target 66 to prevent the irradiation target 66 from tipping over and affecting the cutting size. Finally, the cut irradiation target 66 will enter the connected dissolving bottle 7 through the discharge port 52 of the tank 5 for collection. Throughout this process, the interconnected cylinder 3, gas storage mechanism 4, tank 5, sample injector 6, and dissolving bottle 7, along with the fixed components inserted into the sample injector 6, ensure that the entire irradiated target 66 remains in a closed state during the cutting process. This prevents the leakage of radioactive gas and the flying of chips and residues, thus avoiding radioactive pollution of the environment. Remove the fixing component inserted into the injector 6, then adjust the feed distance of the support component on the tank 5 to control the cutting length of the irradiation target 66. Then, multiple irradiation targets 66 can be placed into the injector 6 at one time. Since the injector 6 is cylindrical, the multiple irradiation targets 66 inside the injector 6 can be circumferentially distributed with the central axis of the injector 6 as the center. Then, insert the fixing component into the injector 6 and fix the multiple irradiation targets 66 inside the injector 6 to prevent them from tilting. Finally, the gas storage mechanism 4 drives the cutting mechanism to cut the multiple irradiation targets 66 supported by the support component. The cutting of multiple irradiation targets 66 can be completed at one time, improving production efficiency.
[0036] In some embodiments of the present invention, such as Figure 1 As shown, the cutting assembly includes a piston 33, a connecting rod 34, and a cutter 35. The piston 33 is slidably connected inside the cylinder 3. The connecting rod 34 is located at the end of the piston 33 facing the first through hole 30. The connecting rod 34 is slidably connected to both the first through hole 30 and the second through hole 50. The cutter 35 is located on the free end of the connecting rod 34 and is located inside the tank 5.
[0037] The piston 33 is located inside the cylinder 3 and slides along the central axis of the cylinder 3. During the sliding process, the piston 33 and the inner wall of the cylinder 3 must be in close contact to prevent the two ends of the piston 33 from communicating. The connecting rod 34 passes through the first through hole 30 and the second through hole 50 in sequence and is slidably connected to the first through hole 30 and the second through hole 50 respectively. The connecting rod 34 must be in close contact with the cylinder 3 and the tank body 5 to prevent the cylinder 3 and the tank body 5 from communicating and causing radioactive gas to enter the cylinder 3. The cutter 35 is an L-shaped cutter with an inclined working surface facing the discharge port 52 of the tank body 5. That is, the blade of the cutter 35 is close to one side of the sample injector 6, which facilitates the cutting of the irradiation target 66.
[0038] In use, the gas storage mechanism 4 controls the movement of the piston 33 within the cylinder 3 through the first vent 31 and the second vent 32, which are connected to the cylinder 3 at both ends. When the piston 33 needs to be fed to cut the irradiation target 66, the gas storage mechanism 4 supplies gas into the cylinder 3 through the second vent 32 and exhausts gas outward from the first vent 31, creating a pressure difference that causes the piston 33 to move toward the first through hole 30, thus completing the cutting of the irradiation target 66. When the piston 33 needs to retract to release the irradiation target 66, the gas storage mechanism 4 supplies gas into the cylinder 3 through the first vent 31 and exhausts gas outward from the second vent 32, creating a pressure difference that causes the piston 33 to move away from the first through hole 30, thus completing the retraction of the piston 33.
[0039] In some embodiments of the present invention, such as Figure 1As shown, the gas storage mechanism 4 includes a gas tank 40, a first connecting pipe 41, a second connecting pipe 42, a first branch pipe 43, a second branch pipe 44, a first solenoid valve 45, a second solenoid valve 46, a third solenoid valve 47, a fourth solenoid valve 48, a fifth solenoid valve 49, and a pressure gauge 411. The gas tank 40 is placed on a support platform 1. The air inlet 401 of the gas tank 40 is connected to the first connecting pipe 41, and the air outlet 402 of the gas tank 40 is connected to the second connecting pipe 42. One end of the first connecting pipe 41 is connected to the first vent 31 on the cylinder 3, and the other end is connected to an air pump. One end of the second connecting pipe 42 is connected to the second vent 32 on the cylinder 3. The first solenoid valve 45 is located on the first connecting pipe 41 and is positioned on the gas tank. Between the air inlet 401 and the first vent 31 of the gas storage tank 40; the second solenoid valve 46 is located at the connection between the first connecting pipe 41 and the air pump; the third solenoid valve 47 is located on the second connecting pipe 42 and between the air outlet 402 and the second vent 32 of the gas storage tank 40; the first branch pipe 43 is located at the end of the first connecting pipe 41 near the first vent 31 and is connected to the first connecting pipe 41 through the fourth solenoid valve 48; the second branch pipe 44 is located at the end of the second connecting pipe 42 near the second vent 32 and is connected to the second connecting pipe 42 through the fifth solenoid valve 49; the pressure gauge 411 is located on the first connecting pipe 41 and between the first solenoid valve 45 and the second solenoid valve 46.
[0040] Both the first connecting pipe 41 and the second connecting pipe 42 are L-shaped pipes. The long section of the first connecting pipe 41 is parallel to the outer wall of the cylinder 3, while the short section is perpendicular to the outer wall of the cylinder 3. Similarly, the long section of the second connecting pipe 42 is parallel to the outer wall of the cylinder 3, while the short section is perpendicular to the outer wall of the cylinder 3. A first solenoid valve 45 is installed at the corner of the first connecting pipe 41 to control the connection between the long and short sections of the first connecting pipe 41. A third solenoid valve 47 is installed at the corner of the second connecting pipe 42 to control the connection between the long and short sections of the second connecting pipe 42. One end of the long tube of the first connecting pipe 41 is connected to an air pump, which supplies air and introduces gas into the storage tank 40 for storage. The long tube portion of the first connecting pipe 41 is connected to the air inlet 401 of the storage tank 40 placed on the support platform 1, and the connection is controlled by a valve, which is a solenoid valve on the storage tank 40. The short tube portion is connected to the first branch pipe 43, and the fourth solenoid valve 48 is installed on the second branch pipe to discharge the air located between the piston 33 and the first through hole 30. The long tube portion of the second connecting pipe 42 is connected to the air outlet 402 of the storage tank 40, and the connection is also controlled by a valve, which is a solenoid valve on the storage tank 40. The short tube portion is connected to the second branch pipe 44 to discharge the air located in the space between the piston 33 and the inner wall of the cylinder 3.
[0041] When in use, open the second solenoid valve 46, and the air pump fills the air tank 40 with gas through the long tube of the first connecting pipe 41. After the pressure gauge 411 on the long tube of the first connecting pipe 41 shows that the air pressure is qualified, close the second solenoid valve 46. At this time, the movement of the piston 33 can be adjusted by adjusting the switching state between the various solenoid valves. When piston 33 needs to retract, close the second solenoid valve 46, the third solenoid valve 47, the fourth solenoid valve 48, and the valve at the outlet 402 of the gas tank 40, and open the first solenoid valve 45, the fifth solenoid valve 49, and the valve at the inlet 401 of the gas tank 40. This allows the gas in the gas tank 40 to fill the space between piston 33 and the first through hole 30, increasing the pressure and compressing the space between piston 33 and the second vent 32, thus completing the retraction of piston 33. When piston 33 needs to feed to complete the cutting, open the second solenoid valve 46, the third solenoid valve 47, the fourth solenoid valve 48, and the valves at the inlet 401 and outlet 402 of the gas tank 40, and close the first solenoid valve 45 and the fourth solenoid valve 48. This allows the gas in the gas tank 40 to fill the space between piston 33 and the second vent 32, increasing the pressure and compressing the space between piston 33 and the first through hole 30, thus completing the cutting of the irradiated target 66. The valves at the air inlet 401 and air outlet 402 of the gas storage tank 40 are also electromagnetic valves, capable of signal connection with the first sensor 36 and the second sensor 37. It is worth noting that the number of gas storage tanks 40 can be 2-4. In this embodiment, there are three possible configurations: First, two gas storage tanks 40 are used, the lower edge of the pin 60 is chamfered at 5°, and the distance between the irradiation target 66 and the injector 6 and the fixing rod 61 does not exceed 3mm; Second, three gas storage tanks 40 are used, the lower edge of the pin 60 is chamfered at 15°, and the distance between the irradiation target 66 and the injector 6 and the fixing rod 61 does not exceed 5mm; Third, four gas storage tanks 40 are used, the lower edge of the pin 60 is chamfered at 10°, and the distance between the irradiation target 66 and the injector 6 and the fixing rod 61 does not exceed 2mm.
[0042] In some embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the fixing assembly includes a pin 60, a fixing rod 61, a connecting rope 62, and a pressure block 63. The pin 60 is frustoconical, and the inner wall of the injector 6 is in contact with the outer wall of the pin 60. The fixing rod 61 is coaxially arranged with the pin 60, and the fixing rod 61 is located at the end of the pin 60 facing the tank 5. There is a first gap 64 between the fixing rod 61 and the inner wall of the injector 6 for placing the irradiation target 66. One end of the connecting rope 62 is located at the end of the pin 60 facing the tank 5, and the pressure block 63 is located at the other end of the connecting rope 62 for fixing the irradiation target 66.
[0043] The pin 60 is frustum-shaped, with the side of the pin 60 with a smaller outer diameter facing the inside of the injector 6 and the side with a larger outer diameter facing the outside of the injector 6. The injector 6 is adapted to the shape of the pin 60. As the end of the injector 6 away from the container 5 moves towards the container 5 along its central axis, the inner diameter of the injector 6 gradually decreases to fit the shape of the pin 60. The fixing rod 61 is located at the end of the pin 60 with a smaller outer diameter. The radius of the fixing rod 61 is smaller than that of the end of the pin 60 with a smaller outer diameter, so that there is a first gap 64 between the fixing rod 61 and the inner wall of the injector 6 to prevent the irradiated target 66. A connecting rope 62 is provided at the end of the pin 60 with a smaller outer diameter. In this embodiment, the connecting rope 62 is specifically selected as a steel wire rope. The other end of the connecting rope 62 is connected to the pressure block 63. The pressure block 63 can firmly fix the irradiation target 66 on the support assembly, so as to prevent the irradiation target 66 from shaking when it is cut by the cutter 35, resulting in uneven cutting and excessive cutting size deviation.
[0044] In use, the pin 60 is held and placed by an external robotic arm. It should be noted that, to facilitate the robotic arm's gripping, a retaining ring 67 can be provided at the end of the pin 60 with a larger outer diameter for the robotic arm to hold. Under the grip of the external robotic arm, the retaining rod 61 on the pin 60 first enters the interior of the injector 6. Then, the pressure block 63 is sent into the interior of the injector 6, and the pin 60 is placed on the inner wall that is compatible with the injector 6. At this time, the injector 6, the container 5, and the dissolving bottle 7 are interconnected and form a closed space, which can prevent the chips and residues caused by cutting the irradiated target 66 from flying into the external environment. Since the injector 6 is cylindrical and the fixing rod 61 is also cylindrical, there is a first gap 64 in the circumferential direction between the fixing rod 61 and the inner wall of the injector 6. Multiple irradiation targets 66 can be placed in this first gap 64 to achieve the effect of cutting multiple irradiation targets 66 at the same time. There are several ways to cut multiple irradiation targets 66. One method is to cut directly along the central axis of the container 5 without rotating the pin 60, until the cutter 35 covers the connection between the sample injector 6 and the container 5. Another method involves cutting the irradiation target 66 within a semi-circle facing the fixing rod 61 after the cutter 35 has cut it, then using an external robotic arm to rotate the pin 60, turning the other end of the fixing rod 61 to face the cutter 35 for further cutting. A third method involves the cutter 35 immediately rotating to cut the next irradiation target 66 after cutting one. The choice of these three methods depends on the actual operating conditions. All three methods reduce the number of times the irradiation targets 66 need to be installed, allowing multiple irradiation targets 66 to be cut at once, and the process is carried out in a sealed space, preventing the flying of chips and residue. It is worth noting that whether multiple irradiation targets 66 can be cut at once depends on whether the distance between the cutter 35 and the inner wall of the tank 5 is greater than the distance between the support surface of the support plate 57 and the inner wall of the tank 5. Only then can multiple irradiation targets 66 be cut.
[0045] In some embodiments of the present invention, such as Figure 1 , Figure 3 and Figure 4As shown, the support assembly includes a screw 56, a support pad 57, an inclined plate 59, a crossbar 591, and a torsion spring 592. A screw hole 53 with the same central axis as the injector 6 is opened on the side wall of the tank body 5. The screw 56 is rotatably connected to the screw hole 53. The support plate 57 is set at the end of the screw 56 facing the injector 6. The crossbar 591 is set on the outer wall of the support plate 57. A sliding hole 590 is opened on the side wall of the inclined plate 59. The crossbar 591 is located inside the sliding hole 590. The torsion spring 592 is sleeved on the crossbar 591. One end of the torsion spring 592 abuts against the support plate 57, and the other end abuts against the inclined plate 59. The relative distance between the width of the support plate 57 and the inner wall of the injector 6 is greater than the distance between the central axis of the irradiation target 66 and the inner wall of the injector 6.
[0046] A screw hole 53 is provided on the side wall of the tank body 5. The central axis of the screw hole 53 is coaxial with the central axis of the injector 6. The screw 56 is rotatably connected to the screw hole 53. A support pad 57 is provided at one end of the screw 56 located inside the tank body 5. The relative distance between the support pad 57 and the inner wall of the injector 6 is greater than the distance between the irradiation target 66 and the inner wall of the injector 6. This allows the irradiation target 66 to be supported while the cutter 35 cuts the irradiation target 66. Since the central axis of the irradiation target 66 is located outside the support pad 57, the cut irradiation target 66 can automatically fall off the support pad 57 and enter the dissolving bottle 7 through the outlet 52 on the tank body 5. There is a movement distance between the support pad 57 and the inner wall of the tank 5 so that the support pad 57 can rotate without obstruction. If the irradiated target 66 being cut falls within this distance, it will cause the irradiated target 66 to accumulate inside the tank 5 instead of falling into the dissolving bottle 7. Therefore, the distance between the support pad 57 and the inner wall of the tank 5 is rotatably connected to the inclined plate 59 by the crossbar 591 and the torsion spring 592. When the torsion spring 592 is in the free end state, the inclined plate 59 is tilted towards the discharge port 52 of the tank 5, so that the irradiated target 66 being cut can roll off the inclined plate 59 into the dissolving bottle 7, thus preventing the irradiated target 66 from accumulating inside the tank 5.
[0047] It is worth noting that since the screw 56 is adjustable up and down, the inclined plate 59, which is in a free state, will not rotate when the screw 56 moves upward. However, when the screw 56 moves downward, if the inclined plate 59 comes into contact with the inner wall of the tank 5 and the screw 56 continues to move downward, the inclined plate 59 and the inner wall of the tank 5 will be pressed against each other. The inclined plate 59 will then compress the torsion spring 592, making the inclined plate 59 gradually flatten until it is level with the support pad 57. If the screw 56 is then turned upward, the inclined plate 59 will rotate towards the inner wall of the tank 5 under the action of the torsion spring 592, maintaining contact between the inclined plate 59 and the inner wall of the tank 5 until the torsion spring 592 is in a free state. In addition, the part of the inclined plate 59 that is close to the support pad 57 will never be higher than the support pad 57 during the feeding process of the screw 56, so as not to affect the operation of the cutter 35.
[0048] In the above embodiment, a cleaning port can be opened at the end of the tank body 5 away from the cylinder 3. A cover 10 is provided on the tank body 5 to cover the cleaning port. After the irradiation target 66 is cut, the cover 10 can be opened to observe from the cleaning port whether the cut irradiation target 66 has fallen onto the tank body 5 and not into the dissolving bottle 7.
[0049] In some embodiments of the present invention, such as Figure 1 As shown, a first spring 38 is provided on the inner wall of cylinder 3 at the first through hole 30, and a second spring 39 symmetrical to the first spring 38 is also provided on the inner wall of cylinder 3. The first spring 38 is sleeved on the connecting rod 34. A first sensor 36 and a second sensor 37 are provided on the inner wall of cylinder 3. The first sensor 36 is located between the first vent 31 and the piston 33, and the second sensor 37 is located between the second vent 32 and the piston 33. The first sensor 36 and the second sensor 37 are both connected to the first solenoid valve 45, the second solenoid valve 46, the third solenoid valve 47, the fourth solenoid valve 48 and the fifth solenoid valve 49.
[0050] The first spring 38 is located on the inner wall of the first through hole 30 inside the cylinder 3, and the second spring 39 is located on the inner wall of the cylinder 3 opposite to the first spring 38, serving to cushion the piston 33. The first sensor 36 and the second sensor 37 are both located on the same side of the inner wall of the cylinder 3, with the first sensor 36 near the first vent 31 and the second sensor 37 near the second vent 32. However, the distance between the first sensor 36 and the first through hole 30 is greater than the length of the first spring 38 in its natural state. Similarly, the distance between the second sensor 37 and the inner wall where the second spring 39 is located is greater than the length of the second spring 39 in its natural state. Furthermore, in this embodiment, both the first sensor 36 and the second sensor 37 can be photoelectric sensors.
[0051] In use, when the piston 33 slides towards the first through hole 30, if the piston 33 touches the first sensor 36, the first sensor 36 detects the position of the piston 33. At this time, the sensor sends a signal to open the first solenoid valve 45, close the second solenoid valve 46, close the third solenoid valve 47, close the fourth solenoid valve 48, open the fifth solenoid valve 49, and open the valve at the connection between the air inlet 401 of the gas tank 40 and the first connecting pipe 41 (at this time, the air inlet 401 of the gas tank 40 has the same effect as the air outlet 402). The valve at the connection between the air outlet 402 of the gas tank 40 and the second connecting pipe 42 is closed. That is, the gas stored in the gas tank 40 is discharged into the cylinder 3 through the first connecting pipe 41. The gas entering the cylinder quickly fills the space between the piston 33 and the first through hole 30, increasing the pressure and pushing the piston 33 towards the side of the second spring 39. The space between the piston 33 and the second spring 39 is compressed and then discharged through the second connecting pipe 42. The second branch pipe 44 is connected to discharge, so as to pull the piston 33 from the far end of the cut to the near end of the cut; when the piston 33 moves to the position of the second sensor 37, the second sensor 37 detects the position of the piston 33, outputs a signal, controls the first solenoid valve 45 to close, the second solenoid valve 46 to open, the third solenoid valve 47 to open, the fourth solenoid valve 48 to open, the fifth solenoid valve 49 to close, and the valve at the connection between the air inlet 401 of the gas tank 40 and the first connecting pipe 41 to open, and the valve at the connection between the air outlet 402 of the gas tank 40 and the second connecting pipe 42 to open, so that the space between the piston 33 and the second spring 39 is gradually filled with gas, increasing the pressure and pushing the piston 33 to move towards the first through hole 30, while the space between the piston 33 and the first through hole 30 is squeezed, and the internal gas is discharged. At this time, the piston 33 drives the cutter 35 to cut the irradiation target 66 on the support pad 57 through the connecting rod 34, and so on, to achieve automatic cutting. It is worth noting that since the pressure change at both ends of piston 33 takes time, when piston 33 moves towards both ends, it may exceed the movement of the sensor in the corresponding direction by a certain distance. At this time, the springs at both ends act as a buffer for piston 33 to avoid excessive compression of the space at both ends, which would make it difficult to fill the gas.
[0052] In some embodiments of the present invention, such as Figure 1 As shown, the free end of the fixing rod 61 does not exceed the inner wall of the tank 5, and there is a second gap 65 between the fixing rod 61 and the irradiation target 66 located in the first gap 64, and the second gap 65 is not greater than 5mm.
[0053] One end of the fixing rod 61 facing the inside of the tank 5 does not extend past the inner wall of the tank 5. It is worth noting that the inner wall of the tank 5 referred to here is the inner wall where the feed port 51 is opened. That is, when the cutter 35 cuts along the cutting direction, it will never come into contact with the fixing rod 61, so as to avoid damage to both the fixing rod 61 and the cutter 35, which would affect the cutting efficiency of the irradiation target 66. When the irradiation target 66 is placed in the first gap 64 between the fixing rod 61 and the inner wall of the injector 6, there will be a second gap 65 between the fixing rod 61 and the irradiation target 66. The radial distance of this second gap 65 along the injector 6 is no more than 5 mm. Without using any clamping parts, the second gap 65 between the fixing rod 61 and the injector 6 can be reduced to clamp and fix the irradiation target 66 located on the support pad 57. Although this clamping and fixing is not as stable as the clamping of clamping parts, the extremely small second gap 65 means that the angular deviation generated when the irradiation target 66 is cut by the cutter 35 will not have a significant impact on the size of the cut irradiation target 66.
[0054] During use, the end of the fixing rod 61 near the tank 5 does not extend beyond the inner wall of the tank 5, thus avoiding interference with the cutting of the irradiation target 66 by the cutter 35 and preventing damage to both the fixing rod 61 and the cutter 35. The second gap 65 between the fixing rod 61 and the irradiation target 66 is no more than 5mm. Compared to the operation that requires adjusting the tightness of the clamping parts to make the irradiation target 66 fall, this allows the irradiation target 66 to fall automatically under the pressure of the pressure block 63 inside the sample injector 6, and the smaller second gap 65 will not significantly affect the cutting size of the irradiation target 66.
[0055] In some embodiments of the present invention, such as Figure 3 As shown, the screw 56 is provided with a handle 55 on the outer part of the tank body 5. The handle 55 is provided with a scale 58 parallel to the central axis of the screw 56. The scale 58 passes through the side wall of the tank body 5 and extends into the interior of the tank body 5. The zero mark of the scale 58 is located at the connection with the handle 55.
[0056] A scale 58 is located at the end of the handle 55 facing the tank 5, and the other end of the scale 58 passes through the tank 5 and extends into the interior of the tank 5. The scale 58 is parallel to the feed direction of the screw 56. Furthermore, the scale 58 is located between the handle 55 and the support pad 57, and the bottoms of the scale 58 and the support pad 57 are in close contact, facilitating the reading of the length of the cut irradiation target 66 from the scale 58. It is worth noting that the sliding connection between the scale 58 and the tank 5 should be tightly sealed to prevent chips and residues inside the tank 5 from leaking out from here.
[0057] In use, the cutting length of the irradiation target 66 can be adjusted as the screw 56 is fed forward. To easily determine the length of the irradiation target 66 being cut, a scale 58 that slides on the tank 5 as the screw 56 is fed forward is used to obtain the length of the irradiation target 66 being cut. The zero mark of the scale 58 is located at the connection point with the handle 55, and the plane of the connection point is the plane corresponding to the zero mark. As the screw 56 is fed forward, the distance between the zero mark on the scale 58 and the outer wall of the tank 5 will change. The degree value expressed by this distance is equivalent to the length of the irradiation target 66 being cut.
[0058] In some embodiments of the present invention, such as Figure 1 As shown, the dissolving bottle 7 has an exhaust port, and a filter 8 connected to the exhaust port of the dissolving bottle 7 is placed on the support platform 1.
[0059] An exhaust port is located on the side wall of the dissolution bottle 7 and is connected to a filter 8. The filter 8 is placed on a support platform 1 and is used to absorb and filter the radioactive waste gas generated by dissolving the cut irradiated target 66 in the dissolution bottle 7.
[0060] In use, after the dissolving bottle 7 is connected and fixed to the outlet 52 on the tank 5, it is connected to the filter 8 through the exhaust port. After the gas storage mechanism 4 drives the cutting mechanism to cut off the irradiation target 66 located between the support component and the fixing component and drop it into the dissolving bottle 7, the dissolving liquid is injected into the dissolving bottle 7 to dissolve the cut-off irradiation target 66. The radioactive waste gas generated during the dissolution process will enter the filter 8 through the exhaust port and be absorbed and filtered by the filter 8. The dissolving bottle 7 has an injection port to facilitate the injection of the dissolving liquid. Since the dissolving bottle 7 is filled with the irradiated irradiation target 66, the injection port needs to be connected to an external interface for injecting the dissolving liquid in advance, and the interface needs to be connected to a valve to prevent the leakage of radioactive gas.
[0061] It is worth noting that in the above embodiment, a third sensor 54 is also provided on the outlet 52 of the dissolving bottle 7. The third sensor 54 can be a photoelectric sensor. The third sensor 54 is connected to the filter 8. The third sensor 54 is used to detect the cut-off irradiation target 66. When the cut-off irradiation target 66 is detected to pass by, the third sensor 54 transmits a signal to the filter 8 to start the filter 8. The filter 8 then purifies the dust and exhaust gas generated by the cut-off irradiation target 66 through the connected exhaust port.
[0062] In some embodiments of the present invention, such as Figure 1 As shown, the support platform 1 is equipped with a lifting platform 9 for controlling the lifting and lowering of the dissolving bottle 7.
[0063] The lifting platform 9 is placed on the support platform 1. The lifting platform 9 is used to control the lifting of the dissolving bottle 7, so as to facilitate the connection between the dissolving bottle 7 and the discharge port 52 of the tank body 5. The distance between the lifting platform 9 and the discharge port 52 of the tank body 5 is greater than the height of the dissolving bottle 7, so as to provide sufficient operating space to operate the dissolving bottle 7.
[0064] When using the dissolving bottle 7, if it needs to be removed, first open the connecting flange between the dissolving bottle 7 and the outlet 52 of the tank 5, and disconnect the connection between the dissolving bottle 7 and the filter 8, so that the dissolving bottle 7 can be separated from the tank 5. Then adjust the lifting platform 9 to lower it. After the lifting platform 9 has lowered to a certain height, the dissolving bottle 7 can be easily removed from between the lifting platform 9 and the outlet 52 of the tank 5 for subsequent operations. If it needs to be installed on the tank 5, first lower the lifting platform 9 to a lower height, then place the dissolving bottle 7 on the lifting platform 9, aligning it with the outlet 52 of the tank 5 in advance, and then start adjusting the lifting platform 9 to raise it. As the lifting platform 9 rises, the dissolving bottle... As the dissolving bottle 7 gets closer to the outlet 52 of the tank 5, to avoid damage to the dissolving bottle 7 due to misalignment, the lifting platform 9 can be adjusted while aligning the dissolving bottle 7 and the outlet 52 of the tank 5. When the dissolving bottle 7 is close to the outlet 52 on the tank 5, the dissolving bottle 7 and the outlet 52 on the tank 5 are connected by the connecting flange. If there is a gap between the dissolving bottle 7 and the lifting platform 9, the lifting platform 9 can be slowly adjusted so that the lifting platform 9 can contact and support the dissolving bottle 7. Then, the filter 8 can be connected to the dissolving bottle 7. This can prevent the radioactive gas from leaking out, prevent chips and residue from flying, and also absorb and filter the radioactive waste gas generated by dissolving the irradiated target 66 in the dissolving bottle 7.
[0065] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A medical radioactive isotope production apparatus, characterized in that, include: A support frame includes a cylinder at its top and a support platform at its bottom. A first through hole is formed on the side wall of the cylinder, and a tank is located at one end of the cylinder. A second through hole is formed on the tank, communicating with the first through hole. A cutting mechanism is slidably connected inside the cylinder, passing through the first and second through holes, with the cutting end of the cutting mechanism located inside the tank. A gas storage mechanism is located on the support platform. A first vent and a second vent are also formed on the side wall of the cylinder. The gas storage mechanism... The first and second vents are connected to the interior of the cylinder; the sample injector is cylindrical, and the side wall of the container has an inlet and an outlet respectively. The container is connected to one end of the sample injector through the inlet. A fixing component for fixing the irradiation target is inserted into the free end of the sample injector, and a dissolving bottle placed on the support platform is connected to the outlet; the support component is set on the side wall of the container and corresponds to the inlet, and is used to adjust the cutting length of the irradiation target.
2. The medical radioisotope production apparatus according to claim 1, characterized in that, The cutting assembly includes a piston, a connecting rod, and a cutter. The piston is slidably connected inside the cylinder. The connecting rod is disposed at the end of the piston facing the first through hole, and the connecting rod is slidably connected to both the first and second through holes. The cutter is disposed on the free end of the connecting rod and is located inside the tank.
3. The medical radioisotope production apparatus according to claim 2, characterized in that, The gas storage mechanism includes a gas tank, a first connecting pipe, a second connecting pipe, a first branch pipe, a second branch pipe, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, and a pressure gauge. The gas tank is placed on the support platform. The gas inlet of the gas tank is connected to the first connecting pipe, and the gas outlet of the gas tank is connected to the second connecting pipe. One end of the first connecting pipe is connected to a first vent on the cylinder, and the other end is connected to an air pump. One end of the second connecting pipe is connected to a second vent on the cylinder. The first solenoid valve is located on the first connecting pipe and is positioned between the gas inlet of the gas tank and the first vent. The first solenoid valve is located between the first connecting pipe and the air pump; the second solenoid valve is located on the second connecting pipe and between the air outlet of the air storage tank and the second air inlet; the first branch pipe is located at the end of the first connecting pipe near the first air inlet, and the first branch pipe is connected to the first connecting pipe through the fourth solenoid valve; the second branch pipe is located at the end of the second connecting pipe near the second air inlet, and the second branch pipe is connected to the second connecting pipe through the fifth solenoid valve; the pressure gauge is located on the first connecting pipe and between the first solenoid valve and the second solenoid valve.
4. The medical radioisotope production apparatus according to claim 3, characterized in that, The fixing assembly includes a pin, a fixing rod, a connecting rope, and a pressure block. The pin is frustum-shaped, and the inner wall of the injector fits against the outer wall of the pin. The fixing rod is coaxially arranged with the pin and is located at the end of the pin facing the container. A first gap exists between the fixing rod and the inner wall of the injector for placing the irradiation target. One end of the connecting rope is located at the end of the pin facing the container, and the pressure block is located at the other end of the connecting rope for fixing the irradiation target.
5. The medical radioisotope production apparatus according to claim 4, characterized in that, The support assembly includes a screw, a support pad, an inclined plate, a crossbar, and a torsion spring. A screw hole coaxial with the injector is formed on the side wall of the container. The screw is rotatably connected to the screw hole. The support plate is located at the end of the screw facing the injector. The crossbar is located on the outer wall of the support plate. A sliding hole is formed on the side wall of the inclined plate, and the crossbar is located inside the sliding hole. The torsion spring is sleeved on the crossbar, with one end abutting against the support plate and the other end abutting against the inclined plate. The relative distance between the width of the support plate and the inner wall of the injector is greater than the distance between the central axis of the irradiated target and the inner wall of the injector.
6. The medical radioisotope production apparatus according to claim 2, characterized in that, The cylinder has a first spring located at the first through hole on its inner wall, and a second spring symmetrical to the first spring is also provided on the inner wall of the cylinder. The first spring is sleeved on the connecting rod. The cylinder has a first sensor and a second sensor on its inner wall. The first sensor is located between the first vent and the piston, and the second sensor is located between the second vent and the piston. Both the first sensor and the second sensor are connected to the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, and the fifth solenoid valve.
7. The medical radioisotope production apparatus according to claim 4, characterized in that, The free end of the fixing rod does not exceed the inner wall of the tank, and there is a second gap between the fixing rod and the irradiation target located in the first gap, and the second gap is not greater than 5mm.
8. The medical radioisotope production apparatus according to claim 5, characterized in that, The screw is provided with a handle on the outer part of the can body. The handle is provided with a scale parallel to the central axis of the screw. The scale passes through the side wall of the can body and extends into the interior of the can body. The zero mark of the scale is located at the connection with the handle.
9. The medical radioisotope production apparatus according to claim 5, characterized in that, The dissolving bottle has an exhaust port, and a filter connected to the exhaust port of the dissolving bottle is placed on the support platform.
10. The medical radioisotope production apparatus according to claim 9, characterized in that, The support platform is equipped with a lifting platform for controlling the raising and lowering of the dissolving bottle.