Continuous automatic filling device for radioactive particle cartridge holder

Abstract

The invention discloses a continuous automatic filling device for radioactive particle clips, which comprises a particle vibration sorting assembly, a clip fixing device and a bottom plate, a continuous conveying track is arranged in the particle vibration sorting assembly, and radioactive particles sequentially move forwards in the conveying track through vibration; the particle cartridge holder is mounted in the cartridge holder fixing device, and particles are sequentially filled into the particle cartridge holder; an outlet of the particle vibration sorting assembly and a particle inlet of the particle clip are in a straight line, the particle clip is arranged at the outlet end of the particle vibration sorting assembly, and the lowest point of particles output from the outlet of the particle vibration sorting assembly is not lower than the upper end face of the particle clip. The device has the beneficial effects that the disordered radioactive particles are neatly arranged in the continuous conveying track and sequentially move forwards to an inlet of the particle cartridge holder, the particles sequentially and continuously fall into the particle cartridge holder under the action of gravity, the filling efficiency of the particles is improved, and the labor intensity and the radiation risk of operators are reduced.

Description

TECHNICAL FIELD

[0001] The application relates to a device for medical radioactive therapy, in particular to a continuous automatic loading device for a radioactive particle clip, and belongs to the technical field of medical radioactive particle application. BACKGROUND

[0002] Radiotherapy, also known as radiation therapy, is a method of using ionizing radiation as a treatment means, mainly used for treating cancer. The principle is to use a large amount of radiation energy to destroy the chromosomes of cells, prevent the division and growth of cells, and thus eliminate cancer cells that divide and grow rapidly. Although radiotherapy is very effective in treating cancer, it also has some side effects, which mainly come from the effect of rays on normal tissues in the treatment area.

[0003] With the progress of medical technology, a new treatment technology capable of reducing the effect of rays on normal tissues in the treatment area has appeared. That is, by implanting radioactive particles into tumor tissues for brachytherapy, and calculating the dose of radiation and the decay period of radionuclides, the side effects of radiotherapy can be effectively controlled under the premise of ensuring the treatment effect.

[0004] The radioactive particles for brachytherapy are micro radioactive sources containing radionuclides, and common radionuclides include 125I, 103Pd, 131Cs, etc. The radioactive particles are composed of a source core and a cladding. The source core is usually a microsphere or a short rod containing radionuclides, and the cladding is usually a medical titanium tube (with a wall thickness of generally 0.05 mm) sealed at both ends and having good biocompatibility. The radioactive particles are sealed and have no holes, are smooth at both ends, have no burrs, and have no unevenness, and the size is mostly 0.8±0.03 mm in diameter and 4.5±0.2 mm in length, or 0.6±0.03 mm in diameter and 4.5±0.2 mm in length, or other sizes.

[0005] The use mode of the radioactive particles mainly includes minimally invasive puncture implantation in vitro and intraoperative placement. When the minimally invasive puncture implantation in vitro is performed, firstly, the number and position of the implanted radioactive particles are determined by using a treatment planning system and CT, MRI, ultrasound and other imaging means, then a puncture needle is inserted into the predetermined position, and the radioactive particles are implanted into the body one by one by cooperating with a radioactive particle implantation gun and a clip. Therefore, before the minimally invasive puncture implantation in vitro, the radioactive particles need to be loaded into the clip. The radioactive particle clip is mainly composed of a particle bin assembly, a push rod assembly and a shielding shell assembly. The radioactive particles are arranged in the particle bin assembly, the movable push rod of the push rod assembly is inserted into the particle bin assembly and pressed on the radioactive particles, the push rod assembly is fixed with the particle bin assembly through threads, the shielding shell assembly is sleeved outside the particle bin assembly and is fixed with the push rod assembly through threads, and when in use, the radioactive particle clip without the shielding shell assembly is inserted into the implantation gun.

[0006] At present, the loading of radioactive particle cartridges is mainly carried out manually. The operator, wearing lead gloves behind the lead glass, first fixes the particle bin assembly on the loading support, then clamps the middle position of a radioactive particle with tweezers, puts the radioactive particle into the opening of the particle bin assembly, and pulls it down along the channel groove to place it at the bottom of the particle bin assembly. Then, the operator clamps the middle position of another radioactive particle with tweezers, puts the radioactive particle into the opening of the particle bin assembly, and pulls it down to place it on the previous radioactive particle. The above process is repeated until the particle bin assembly is filled with the predetermined number of radioactive particles. After the predetermined number of radioactive particles are loaded into the particle bin assembly, the movable push rod of the push rod assembly is inserted into the particle bin assembly and pressed on the radioactive particles. The push rod assembly is fixed to the particle bin assembly by screw threads. Then, the shielding shell assembly is sleeved outside the particle bin assembly, and the shielding shell assembly is fixed to the push rod assembly by screw threads. The radioactive particles are small in size and radioactive. The current manual operation for loading radioactive particle cartridges is inconvenient and inefficient. Since the shell wall of the radioactive particle is very thin, the shell may be crushed and leave indentations when the radioactive particle is clamped with tweezers. Moreover, the labor intensity of the operator is high, and the radiation dose received by the operator is high.

[0007] Chinese patent CN111840818A discloses a device and method for loading radioactive particle cartridges. Under the control of the control system, the escapement system cooperates with the slide rail system to sequentially complete the steps of absorbing radioactive particles from the vibration system, transferring the absorbed radioactive particles to above the assembly table, and loading the radioactive particles into the particle bin assembly of the radioactive particle cartridge. Since the depth of the radioactive particle cartridge is relatively deep, the particles cannot be arranged in a horizontal and orderly manner during the falling process, which affects the success rate of loading. Moreover, the doll-grabbing loading scheme has the problems of low loading efficiency and easy particle falling.

[0008] Chinese patent CN118903716A discloses a radioactive particle cartridge loading device and its use method. The device uses a particle gun to pneumatically inject particles into the particle bin, thereby omitting the particle bin installation step. This technical scheme needs an external power source to inject particles into the particle bin one by one. Each time a particle is loaded, the particle needs to be grabbed, pushed, and injected, and a complete set of conveying and loading actions needs to be completed by the cooperation of various driving modules. The device cannot realize continuous particle loading, and the pushing mechanism may squeeze the particles and cause damage to the particles. Moreover, since the diameter of the gas path one is small, it is difficult for the particles to enter the gas path one in an orderly manner, and the filling efficiency is low. Therefore, the device has the problems of low loading efficiency and complex structure. SUMMARY

[0009] The application aims to provide a continuous automatic filling device for radioactive particle cartridges to solve the problems of low particle filling efficiency, low filling success rate and complex overall structure in the prior art.

[0010] The continuous automatic filling device for radioactive particle cartridges comprises a particle vibration sorting assembly, a cartridge fixing device and a bottom plate, the particle vibration sorting assembly is vibratably installed on the bottom plate, the cartridge fixing device is fixedly installed on the bottom plate, a continuous conveying track is arranged in the particle vibration sorting assembly, and radioactive particles are sequentially moved forward in the conveying track through vibration; the particle cartridge is detachably installed in the cartridge fixing device, and the sorted particles in the particle vibration sorting assembly are sequentially filled into the particle cartridge; the outlet of the particle vibration sorting assembly is in a straight line with the inlet of the particle cartridge, the particle cartridge is arranged close to but not in contact with the outlet end of the particle vibration sorting assembly, and the lowest point of the particles output at the outlet of the particle vibration sorting assembly is not lower than the upper end surface of the particle cartridge.

[0011] The particle vibration sorting assembly arranges the disordered radioactive particles in the continuous conveying track in an orderly manner, and the particles are sequentially moved forward until the inlet of the particle cartridge, and then the particles are sequentially and continuously dropped into the particle cartridge under the action of gravity.

[0012] The installation gap between the outlet end of the particle vibration sorting assembly and the particle cartridge is slightly larger than the amplitude of the particle vibration sorting assembly but smaller than one fourth of the length of the particle.

[0013] The grabbing process is cancelled, and no additional power source is needed to drive the particles into the particle cartridge, the particle filling efficiency is improved, and the labor intensity and radiation risk of the operator are reduced.

[0014] Preferably, in order to arrange the radioactive particles in an orderly manner and output the particles in an orderly manner, the particle vibration sorting assembly comprises a spiral vibration disc, a vibration assembly and a sorting track assembly, the spiral vibration disc is vibratably installed on the bottom plate through the vibration assembly, and a spiral conveying track is arranged on the inner side of the spiral vibration disc; the sorting track assembly is provided with a particle channel that can only allow one particle to pass through, and the sorting track assembly is fixedly installed at the outlet of the spiral vibration disc; and the spiral conveying track and the bottom of the particle channel are smoothly connected to form a continuous conveying track.

[0015] The present application needs to solve the problem of automatically filling radioactive particles into the particle cartridge in an orderly manner. Before the filling starts, the radioactive particles need to be poured into the spiral vibration disc. The spiral vibration disc is driven to vibrate by the vibration assembly, so that the radioactive particles fall into the spiral conveying track to realize particle arrangement. In order to solve the problem of particle stacking, the sorting track assembly is provided with a particle channel that can only allow one particle to pass through and is smoothly connected with the spiral conveying track, thereby realizing the orderly output of radioactive particles and providing input guarantee for continuous automatic filling.

[0016] Preferably, in order to improve the continuity of the radioactive particles in the spiral conveying track, the spiral vibration disc is inclined, the inlet of the spiral conveying track is located at the lowest point of the inclined side, and the outlet of the spiral conveying track is located at the highest point of the inclined side.

[0017] The spiral vibration disc can also be horizontally arranged, and is usually arranged horizontally.

[0018] Since the spiral vibration disc is inclined and the inlet of the spiral conveying track is located at the lowest point of the inclined side, the radioactive particles will focus at the inlet of the spiral conveying track, and through vibration, particles will continuously enter the spiral conveying track.

[0019] The sorting track assembly is arranged in a horizontal manner, which can output the particles to the inlet of the particle cartridge in a horizontal state, which is more conducive to the filling of the particles; and the sorting track assembly and the spiral vibration disc can be respectively installed with vibration devices to improve the conveying efficiency of the sorting track assembly.

[0020] The sorting track assembly can be inclined downward in the direction of particle advancement, and the particles can slide downward to the inlet of the particle cartridge by gravity.

[0021] Preferably, in order to realize the orderly entry of overlapping particles into the particle channel one by one, and to adapt to particles of different specifications, the sorting track assembly comprises a chute bottom plate and a cover plate, the cover plate is detachably installed above the chute bottom plate, the chute bottom plate is provided with a chute for particle sorting, and the chute bottom plate and the cover plate are assembled to form a particle channel; the chute on the chute bottom plate is smoothly connected with the bottom of the spiral conveying track.

[0022] Different cover plates can be replaced to adapt to particles of different diameters. For example, recesses can be formed in the cover plate to cooperate with the chute to adapt to large-diameter particles; convex parts can be arranged on the cover plate to cooperate with the chute to adapt to small-diameter particles.

[0023] Preferably, in order to realize the orderly entry of the overlapping particles into the particle channel one by one and the rearrangement of the overlapping particles, the cover plate is provided with a front-narrow-and-back-wide inclined end face near the outlet end of the spiral conveying track, the inclined end face faces the inner side of the spiral vibration tray, and the sorting track assembly and the spiral vibration tray form a large-up-and-small-down disc structure with the inner side continuously closed except for the particle channel entrance.

[0024] When the particle stack enters the joint of the chute on the chute bottom plate and the cover plate, the cover plate prevents the particles stacked on the upper part from entering the particle channel, so that the particles enter the particle channel in a single transverse, orderly and stable manner. The particles stacked on the upper part contact the inclined end face and fall back to the spiral vibration tray along the inclined end face. Since the inclined end face is smoothly transitioned, the particles are not damaged.

[0025] Preferably, in order to improve the success rate of the radioactive particle loading, the top of the clip fixing device is provided with a detachable limiting plate, the limiting plate is provided with a limiting slot opening towards the outlet side of the particle vibration sorting assembly, and the limiting slot is matched with the particle clip entrance.

[0026] Here, the matching includes position, size and shape. The position matching means that the limiting slot is directly opposite the entrance of the particle clip. The size matching means that the size of the limiting slot is equal to or smaller than the size of the particle clip entrance, or the limiting slot is a large-up-and-small-down trapezoidal slot and the bottom width size is not greater than the width of the particle clip entrance. By replacing the limiting plate with different specifications of limiting slots, different specifications of particles can be adapted.

[0027] Since the size of the particle channel and the limiting slot is greater than the diameter of the particle, the particles are not damaged due to rigid contact when the particle vibration sorting assembly forwards the particles.

[0028] If the particles entering the limiting slot fail to completely enter the loading position, the particles at the rear will further push the particles at the front to enter the loading position. Therefore, the radioactive particles can accurately enter the loading position above the particle clip entrance under the joint action of the particle vibration sorting assembly and the limiting slot.

[0029] Preferably, in order to confirm whether the radioactive particles enter the loading position and perform loading counting, the limiting plate is provided with a sensing device, and the sensing end of the sensing device penetrates the limiting plate from the side to detect whether there is a radioactive particle at the front end of the limiting slot.

[0030] The sensing end of the sensing device detecting whether there is a radioactive particle at the front end of the limiting slot can confirm whether the particle completely enters the loading position. If the particle is not loaded in place, the sensing end of the sensing device cannot detect the existence of the particle. Only when the particle is loaded to the front end of the limiting slot can the sensing device detect the particle, and a detection signal is transmitted to complete one counting.

[0031] Priority, in order to avoid the process of filling radioactive particles in the particle clip occurs tilt, the particle clip opening upward detachable installed in the clip fixing device, the particle clip slot is provided with a liftable particle support device, particle support device according to the signal of inductive device start down program, after each start down program particle support device down a particle diameter of distance.

[0032] Because the particle clip needs to stack multiple particles, the storage slot of the particle clip is relatively deep, and the particle will tilt when falling during the particle filling process, which will cause the particles to be stacked irregularly. When the first particle is filled into the particle clip, the particle support device is in the initial state and is located at the highest point in the particle clip. When the particle enters the filling position, the inductive device detects the presence of the particle and sends a detection signal to start the particle support device. The particle support device moves down a particle diameter of distance, and the particle falls into the particle clip with the particle support device. Each time the inductive device detects a particle, it will start the particle support device down program and complete a count; when the count value of the inductive device reaches the set value, the particle support device rises to the initial position and starts counting again.

[0033] Priority, in order to realize the connectivity of particle filling, the particle support device includes a support plate and a lifting drive assembly, the support plate is located in the storage slot of the particle clip, and the lifting drive assembly drives the support plate to move up and down in the storage slot of the particle clip.

[0034] By controlling the working parameters of the lifting drive assembly, the continuity of particle filling can be realized. After installing a particle filling, the lifting drive assembly drives the support plate to descend a particle diameter until the entire particle clip is filled. Replace the new empty particle clip, and the lifting drive assembly drives the support plate to reset to the initial position.

[0035] Priority, in order to realize the automatic connection of the particles, including a controller and a man-machine interactive display operation system, the controller is respectively connected with the man-machine interactive display operation system, the inductive device, the particle vibration sorting assembly and the lifting drive assembly signal, the man-machine interactive display operation system sets the control parameters for the controller, the inductive device feedback detection signal to the controller, the controller controls the start and stop of the particle vibration sorting assembly and the lifting movement of the lifting drive assembly according to the set parameters of the man-machine interactive display operation system and the feedback detection signal of the inductive device.

[0036] The human-computer interaction display operating system sets the filling quantity according to the particle cartridge parameter, the particle cartridge is loaded into the cartridge fixing device, the particle vibration sorting assembly is started, the particles enter above the particle cartridge, the sensing device detects the particles and feeds back a signal to the controller, the controller controls the lifting driving assembly to start a single descent program and complete a counting, and the controller displays the counting value on the operation end of the human-computer interaction display operating system; the above detection and counting steps are repeated until the set particle filling quantity value is reached, and the controller closes the particle vibration sorting assembly; after the particle cartridge is removed, the lifting driving assembly is reset to the initial state, and after the particle cartridge is replaced, the particle vibration sorting assembly is restarted.

[0037] Preferably, in order to improve the safety of the operator, a radiation-proof shell is included, the particle vibration sorting assembly, the cartridge fixing device and the bottom plate are located inside the radiation-proof shell, and the operation end of the human-computer interaction display operating system is located outside the radiation-proof shell. A particle feeding port is arranged above the radiation-proof shell, and a radiation-proof cover plate is arranged on the feeding port. The radiation-proof shell includes a particle cartridge replacement port of the cartridge fixing device.

[0038] The present application encloses radioactive particles in a sealed space through the radiation-proof shell and the radiation-proof cover plate, reduces the leakage of radiation, and improves the convenience of operability and maintainability through the particle cartridge replacement port.

[0039] Beneficial effects: The particle vibration sorting assembly arranges the disordered radioactive particles in the continuous conveying track in an orderly manner, and moves forward one by one until the entrance of the particle cartridge, and the particles fall into the particle cartridge one by one under the action of gravity. The grabbing process is cancelled, and no additional power source is needed to drive the particles into the particle cartridge; the particle filling efficiency is improved, and the labor intensity and radiation risk of the operator are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0041] Figure 1 It is a structural schematic diagram of the particle cartridge of the present application; Figure 2 It is a structural schematic diagram of the present application for removing the radiation-proof shell; Figure 3 It is a top view of the particle filling part structure of the present application; Figure 4Fig. 4 is a partial enlarged view of the structure of the particle loading part of the present application in a plan view; Figure 5 Fig. 5 is a front view of the structure of the particle loading part of the present application; Figure 6 Fig. 6 is a partial enlarged view of the structure of the particle loading part of the present application in a front view; Figure 7 Fig. 7 is a front view of the particle cartridge of the present application; Figure 8 Fig. 8 is a perspective view of the structure of the particle loading part of the present application; Figure 1 Figure 9 Fig. 9 is a perspective view of the structure of the particle loading part of the present application; Figure 2 Figure 10 Fig. 10 is a schematic view of the structure of the particle supporting device of the present application; Figure 11 Fig. 11 is a schematic view of the structure of the whole machine of the present application. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0043] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "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 do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0045] As shown in Fig. 1, the particle cartridge 1 of the present application comprises a particle loading part 2 and a particle supporting device 3. Figure 1 ​​As shown, the particle cartridge is the particle bin in the background art, the top is the entrance, the bottom is provided with an output through hole, and the side is provided with a vertical channel groove.

[0046] As shown in Figure 2 , 3 , 4, 5 and 6, a continuous automatic filling device of radioactive particle cartridge, comprising a particle vibration sorting assembly 1, a cartridge fixing device 2 and a bottom plate 3, the particle vibration sorting assembly 1 is vibratably installed on the bottom plate 3, the cartridge fixing device 2 is fixedly installed on the bottom plate 3, the particle vibration sorting assembly 1 is provided with a continuous conveying track 11, and the radioactive particles are moved forward in the conveying track 11 by vibration; the particle cartridge 4 is detachably installed in the cartridge fixing device 2, and the sorted particles in the particle vibration sorting assembly 1 are sequentially filled into the particle cartridge 4; the outlet of the particle vibration sorting assembly 1 is in a straight line with the entrance of the particle cartridge 4, the particle cartridge 4 is arranged close to but not in contact with the outlet end of the particle vibration sorting assembly 1, and the lowest point of the particles output at the outlet of the particle vibration sorting assembly 1 is not lower than the upper end surface of the particle cartridge 4.

[0047] The application arranges the disordered radioactive particles in the continuous conveying track 11 by the particle vibration sorting assembly 1, and the particles are sequentially moved forward until the entrance of the particle cartridge 4, and then the particles are sequentially and continuously dropped into the particle cartridge 4 under the action of gravity. The installation gap between the outlet end of the particle vibration sorting assembly 1 and the particle cartridge 4 is slightly larger than the amplitude of the particle vibration sorting assembly 1, but smaller than one fourth of the length of the particle, and if the gap is too large, the particles will fall into the gap during conveying, resulting in filling failure. The application cancels the grabbing process, and does not need to additionally increase the power source to drive the particles into the particle cartridge 4; the filling efficiency of the particles is improved, and the labor intensity and radiation risk of the operator are reduced.

[0048] As shown in Figure 2 , 3 and 8, in order to realize the orderly arrangement and output of the radioactive particles, the particle vibration sorting assembly 1 comprises a spiral vibration disc 12, a vibration assembly 13 and a sorting track assembly 14, the spiral vibration disc 12 is vibratably installed on the bottom plate 3 through the vibration assembly 13, the inside of the spiral vibration disc 12 is provided with a spiral conveying track 111; the sorting track assembly 14 is provided with a particle channel 112 which can only allow one particle to pass through, and the sorting track assembly 14 is fixedly installed at the outlet of the spiral vibration disc 12; the spiral conveying track 111 and the bottom of the particle channel 112 are smoothly connected to form the continuous conveying track 11.

[0049] The problem to be solved by the present application is to automatically fill radioactive particles into the particle cartridge 4 in an orderly and neat manner. Before the filling starts, the radioactive particles need to be poured into the spiral vibration tray 12. The spiral vibration tray 12 is driven to vibrate by the vibration assembly 13, so that the radioactive particles fall into the spiral conveying track 111 to achieve particle arrangement. In order to solve the problem of particle stacking, the sorting track assembly 1 is provided with a particle channel 112 that can only allow one particle to pass through and is smoothly connected with the spiral conveying track 111, thereby realizing the orderly and neat output of radioactive particles and providing input guarantee for continuous automatic filling.

[0050] As shown in Figure 5 and 6 , in order to improve the continuity of the radioactive particles in the spiral conveying track 111, the spiral vibration tray 12 is inclined, and the outlet of the spiral conveying track 111 is located at the highest point of the inclined side.

[0051] Since the spiral vibration tray 12 is inclined and the inlet of the spiral conveying track 111 is located at the lowest point of the inclined side, the radioactive particles will focus at the inlet of the spiral conveying track 111, and through vibration, particles will continuously enter the spiral conveying track 111.

[0052] The spiral vibration tray 12 can also be horizontally arranged, and is usually arranged horizontally (the conventional arrangement is not provided with a drawing).

[0053] The sorting track assembly 14 is arranged in a horizontal manner, which can output the particles to the inlet of the particle cartridge 4 in a horizontal state, which is more conducive to the filling of the particles; and the sorting track assembly 14 and the spiral vibration tray 12 can be respectively installed with a vibration device to improve the conveying efficiency of the sorting track assembly 14.

[0054] The sorting track assembly 14 can be inclined downward in the direction of particle advancement, and the particles can slide downward to the inlet of the particle cartridge 4 by gravity (a parallel embodiment is not provided with a drawing).

[0055] As shown in Figure 3 , 4 , 5 and 6, in order to realize the orderly entry of overlapping particles into the particle channel 112 one by one, and to adapt to particles of different specifications, the sorting track assembly 14 includes a chute bottom plate 141 and a cover plate 142, the cover plate 142 is detachably installed above the chute bottom plate 141, the chute bottom plate 141 is provided with a particle sorting chute, and the chute bottom plate 141 and the cover plate 142 are assembled to form the particle channel 112; the chute on the chute bottom plate 141 is smoothly connected with the bottom of the spiral conveying track 111.

[0056] Different cover plates 142 can be replaced to adapt to particles of different diameters. For example, a groove can be formed on the cover plate 142 to match the chute to adapt to large-diameter particles; or a protrusion can be arranged on the cover plate 142 to match the chute to adapt to small-diameter particles.

[0057] As shown in Figure 8 To achieve the orderly entry of the overlapping particles into the particle channel 112 one by one and the rearrangement of the overlapping particles, the cover plate 142 is provided with a front-narrow-and-back-wide inclined end surface 143 near the outlet end of the spiral conveying track 111, the inclined end surface 143 faces the inner side of the spiral vibration tray 12, and the sorting track assembly 14 and the spiral vibration tray 12 form a large-up-and-small-down disc structure with the inner side continuously closed except for the particle channel 112 entrance.

[0058] When the particle stack enters the chute on the chute bottom plate 141 and the joint of the cover plate 142, the cover plate 142 prevents the particles stacked on the upper part from entering the particle channel 112, so that the particles enter the particle channel 112 in a single transverse, orderly and stable manner. The particles stacked on the upper part contact the inclined end surface 143 and fall back to the spiral vibration tray 12 along the inclined end surface 143. Since the inclined end surface 143 is a smooth transition, the particles are not damaged.

[0059] As shown in Figure 7 and 8 To improve the success rate of radioactive particle loading, the top of the clip fixing device 2 is provided with a detachable limiting plate 21, the limiting plate 21 is provided with a limiting groove 22 opening towards the outlet side of the particle vibration sorting assembly 1, and the limiting groove 22 matches the inlet of the particle clip 4.

[0060] The matching includes position, size and shape. The position matching means that the limiting groove 22 is directly opposite the inlet of the particle clip 4; the size matching means that the size of the limiting groove 22 is equal to the size of the inlet of the particle clip 4 or the size of the limiting groove 22 is smaller than the size of the inlet of the particle clip 4 or the limiting groove 22 is a large-up-and-small-down trapezoidal groove and the bottom width size is not greater than the width of the inlet of the particle clip 4. By replacing the limiting plate 21 with different specifications of the limiting groove 22, different specifications of particles can be adapted (the structure of the limiting groove is not provided with detailed drawings).

[0061] Since the size of the particle channel 112 and the limiting groove 22 is greater than the diameter of the particle, the particle will not be damaged due to rigid contact when the particle vibration sorting assembly 1 forwards the particle.

[0062] If the particle entering the limiting groove 22 fails to completely enter the loading position, the particle behind will further push the particle in front to enter the loading position. Therefore, the radioactive particle can accurately enter the loading position above the inlet of the particle clip 4 under the joint action of the particle vibration sorting assembly 1 and the limiting groove 22.

[0063] As shown in Figure 3 and 9 , in order to confirm whether the radioactive particles enter the filling position and carry out the filling count, the limiting plate 21 is installed with the sensing device 23, and the sensing end of the sensing device 23 penetrates the limiting plate 21 from the side to detect whether there are radioactive particles in front of the limiting groove 22.

[0064] The sensing end of the sensing device 23 detects whether there are radioactive particles in front of the limiting groove, which can confirm whether the particles completely enter the filling position. If the particles are not filled in place, the sensing end of the sensing device 23 cannot detect the presence of the particles. Only when the particles are filled to the front of the sensing device of the limiting groove 22 can the particles be detected, and a detection signal is transmitted to complete a count.

[0065] As shown in Figure 9 and 10 , in order to avoid the inclination of the radioactive particles during the filling process in the particle clip 4, the particle clip 4 is detachably installed in the clip fixing device 2 with the opening upward, and the particle support device 5 is arranged in the storage groove of the particle clip 4. The particle support device 5 starts the lowering program according to the signal of the sensing device 23, and moves downward by a particle diameter after each lowering program is started.

[0066] Because the particle clip 4 needs to stack multiple particles, the storage groove of the particle clip 4 is relatively deep, and the particles will incline when falling during the particle filling process, which will cause the particles to be unable to be stacked neatly. When the particle clip 4 fills the first particle, the particle support device 5 is in the initial state and is located at the highest point in the particle clip 4. When the particle enters the filling position, the sensing device 23 detects the presence of the particle and sends a detection signal to start the particle support device 5. The particle support device 5 moves downward by a particle diameter, and the particle falls into the particle clip 4 along with the particle support device 5. Each time the sensing device 23 detects the particle, the particle support device 5 starts the lowering program and completes a count. When the count value of the sensing device 23 reaches the set value, the particle support device 5 rises and resets to the initial position, and the counting starts again.

[0067] As shown in Figure 1 , 9 and 10, in order to realize the connectivity of the particle filling, the particle support device 5 includes a support plate 51 and a lifting driving assembly 52. The support plate 51 is located in the storage groove of the particle clip 4, and the lifting driving assembly 52 drives the support plate 51 to move up and down in the storage groove of the particle clip 4.

[0068] The continuity of particle loading can be realized by controlling the working parameters of the lifting driving assembly 52. After the particle loading is completed, the lifting driving assembly drives the support plate 51 to descend by one particle diameter until the entire particle magazine 4 is loaded. The new empty particle magazine 4 is replaced, and the lifting driving assembly 52 drives the support plate 51 to reset to the initial position.

[0069] As shown in Figure 11 In order to realize the automatic connection and loading of particles, the device further comprises a controller 6 and a man-machine interactive display operation system 7. The controller 6 is signal connected with the man-machine interactive display operation system 7, the sensing device 23, the particle vibration sorting assembly 1 and the lifting driving assembly 52 respectively. The man-machine interactive display operation system 7 sets control parameters for the controller 6. The sensing device 23 feeds back detection signals to the controller 6. The controller 6 controls the start and stop of the particle vibration sorting assembly 1 and the lifting and descending movement of the lifting driving assembly 52 according to the setting parameters of the man-machine interactive display operation system 7 and the detection signals fed back by the sensing device 23.

[0070] The man-machine interactive display operation system 7 sets the loading quantity according to the parameters of the particle magazine 4. The particle magazine 4 is loaded into the magazine fixing device 2. The particle vibration sorting assembly 1 is started. The particles enter above the particle magazine 4. The sensing device 23 detects the particles and feeds back signals to the controller 6. The controller 6 controls the lifting driving assembly 52 to start the single descent program and complete the counting. The controller 6 displays the counting value on the operation end of the man-machine interactive display operation system 7. The above detection and counting steps are repeated until the set particle loading quantity value is reached. The controller 6 closes the particle vibration sorting assembly 1. After the particle magazine 4 is removed, the lifting driving assembly 52 is reset to the initial state. After the particle magazine 4 is replaced, the particle vibration sorting assembly 1 is restarted.

[0071] As shown in Figure 11 In order to improve the safety of the operator, the device further comprises a radiation-proof shell 8. The particle vibration sorting assembly 1, the magazine fixing device 2 and the bottom plate 3 are located inside the radiation-proof shell 8. The operation end of the man-machine interactive display operation system 7 is located outside the radiation-proof shell 8. A particle dropping port is arranged above the radiation-proof shell 8. A radiation-proof cover plate 9 is arranged on the dropping port. The radiation-proof shell 8 comprises a particle magazine 4 replacement port of the magazine fixing device 2.

[0072] The radioactive particles are enclosed in a sealed space by the radiation-proof shell 8 and the radiation-proof cover plate 9, reducing the external leakage of radiation. The particle magazine 4 replacement port improves the convenience of operability and maintainability.

[0073] The various embodiments described in this specification are implemented in a progressive manner, each embodiment focusing on the differences from other embodiments, and the same or similar parts between embodiments can be mutually referred to. For the apparatus disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0074] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those of ordinary skill in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A continuous automatic loading device for a radioactive particle magazine, comprising a particle vibration sorting component (1), a magazine fixing device (2), and a base plate (3), wherein the particle vibration sorting component (1) is vibratingly mounted on the base plate (3), the magazine fixing device (2) is fixedly mounted on the base plate (3), the particle vibration sorting component (1) is provided with a continuous conveying track (11), and the radioactive particles move forward sequentially within the conveying track (11) by vibration; the particle magazine (4) is detachably mounted within the magazine fixing device (2), and the particles sorted in the particle vibration sorting component (1) are sequentially loaded into the particle magazine (4); characterized in that: The outlet of the particle vibration sorting component (1) and the inlet of the particle in the particle magazine (4) are in a straight line. The particle magazine (4) is located close to but not in contact with the outlet of the particle vibration sorting component (1). The lowest point of the particles output from the outlet of the particle vibration sorting component (1) is not lower than the upper surface of the particle magazine (4).

2. The continuous automatic loading device for radioactive particle magazines according to claim 1, characterized in that: The particle vibration sorting component (1) includes a spiral vibrating disk (12), a vibration component (13), and a sorting track component (14). The spiral vibrating disk (12) is vibratingly mounted on the base plate (3) via the vibration component (13). A spiral conveying track (111) is provided inside the spiral vibrating disk (12). The sorting track component (14) is provided with a particle channel (112) that allows only one particle to pass through. The sorting track component (14) is fixedly installed at the outlet of the spiral vibrating disk (12). The spiral conveying track (111) is smoothly connected to the bottom of the particle channel (112) to form a continuous conveying track (11).

3. The continuous automatic loading device for radioactive particle magazines according to claim 2, characterized in that: The spiral vibratory plate (12) is inclined, and the outlet of the spiral conveying track (111) is located at the highest point on the inclined side.

4. The continuous automatic loading device for radioactive particle magazines according to claim 2, characterized in that: The sorting track assembly (14) includes a chute base plate (141) and a cover plate (142). The cover plate (142) is detachably installed above the chute base plate (141). The chute base plate (141) is provided with a chute for particle sorting. The chute base plate (141) and the cover plate (142) are assembled to form a particle channel (112). The chute on the chute base plate (141) is smoothly connected to the bottom of the spiral conveying track (111).

5. The continuous automatic loading device for radioactive particle magazines according to claim 2, characterized in that: The cover plate (142) is close to the outlet end of the spiral conveying track (111) with a beveled end face (143) that is narrow at the front and wide at the back. The beveled end face (143) faces the inside of the spiral vibrating disk (12). The sorting track assembly (14) and the spiral vibrating disk (12) form a continuously closed disc-shaped structure with a larger top and a smaller bottom, leaving only the particle channel (112) entrance on the inner side.

6. The continuous automatic loading device for radioactive particle magazines according to claim 1, characterized in that: The magazine fixing device (2) has a detachable mounting limit plate (21) on its top. The limit plate (21) has a limit groove (22) that opens toward the outlet side of the particle vibration sorting component (1). The limit groove (22) matches the inlet of the particle magazine (4).

7. The continuous automatic loading device for radioactive particle magazines according to claim 6, characterized in that: A sensing device (23) is installed on the limiting plate (21). The sensing end of the sensing device (23) penetrates the limiting plate (21) from the side to detect whether there are radioactive particles at the front end of the limiting groove (22).

8. The continuous automatic loading device for radioactive particle magazines according to claim 7, characterized in that: The particle magazine (4) is detachably installed in the magazine fixing device (2) with its opening facing upward. The storage slot of the particle magazine (4) is equipped with a liftable particle support device (5). The particle support device (5) starts the descent program according to the signal of the sensing device (23). After each descent program is started, the particle support device (5) moves downward by a distance of one particle diameter.

9. The continuous automatic loading device for radioactive particle magazines according to claim 8, characterized in that: The particle support device (5) includes a support plate (51) and a lifting drive assembly (52). The support plate (51) is located in the storage slot of the particle magazine (4), and the lifting drive assembly (52) drives the support plate (51) to move up and down in the storage slot of the particle magazine (4).

10. The continuous automatic loading device for radioactive particle magazines according to claim 9, characterized in that: The system includes a controller (6) and a human-machine interface display operating system (7). The controller (6) is connected to the human-machine interface display operating system (7), the sensing device (23), the particle vibration sorting component (1), and the lifting drive component (52) respectively. The human-machine interface display operating system (7) sets control parameters for the controller (6), and the sensing device (23) feeds back detection signals to the controller (6). The controller (6) controls the start and stop of the particle vibration sorting component (1) and the lifting drive component (52) respectively according to the parameters set by the human-machine interface display operating system (7) and the detection signals fed back by the sensing device (23).

11. The continuous automatic loading device for radioactive particle magazines according to claim 10, characterized in that: The radiation shielding shell (8), the particle vibration sorting component (1), the magazine fixing device (2) and the base plate (3) are located inside the radiation shielding shell (8), and the operation terminal of the human-computer interaction display operating system (7) is located outside the radiation shielding shell (8); The radiation shielding shell (8) is provided with a particle delivery port on its upper part, and a radiation shielding cover plate (9) is provided on the delivery port. The radiation shield (8) includes a replacement port for the particle magazine (4) of the magazine fixing device (2).

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