Automatic cartridge holder filling device with recovery function and using method thereof

Abstract

The invention discloses an automatic cartridge holder filling device with a recovery function and a use method thereof, and the device comprises a cartridge holder filling mechanism which is used for sequentially filling radioactive sources into storage grooves in a cartridge holder; the radioactive source driving mechanism drives the radioactive source to move forwards along the radioactive source filling channel through a push rod or airflow until the radioactive source enters the cartridge holder filling mechanism; the radioactive source feeding mechanism is used for outputting a plurality of radioactive sources from the output end of the radioactive source feeding mechanism; the reversing mechanism and the radioactive source driving mechanism drive the radioactive source needing to be filled to enter the cartridge holder filling mechanism along the radioactive source filling channel, and the cartridge holder filling action is achieved. The reversing mechanism is connected with a radioactive source recycling container, and the radioactive source feeding mechanism or the radioactive source driving mechanism outputs radioactive sources which do not need to be filled into the radioactive source recycling container. The radioactive source filling device can separate out unqualified radioactive sources or recover residual radioactive sources, and effectively improves filling efficiency and safety.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a magazine automatic loading device with a recycling function and its usage method. Background Art

[0002] Radioactive seed implantation surgery is a treatment method that implants radioactive sources inside tumors and relies on the radioactivity of the radioactive sources to destroy tumors. When performing radioactive seed implantation surgery, it is usually necessary to load radioactive seeds into a magazine, then install the magazine into a radioactive seed implantation gun, and implant many radioactive seeds one by one into the tumors in the patient's body through the radioactive seed implantation gun to achieve precise brachytherapy between tissues. Therefore, before performing radioactive seed implantation surgery, it is necessary to first load the radioactive seeds into the magazine.

[0003] Existing particle magazines need to be disassembled and manually loaded with radioactive seeds during most uses. However, during the manual loading process, it will cause radiation damage to the operators, and the activity of the seeds will gradually decrease over time. During the process of installing the particle magazine, it is impossible to further detect the activity of the seeds. Therefore, there is an urgent need for a device that can automatically load the magazine and automatically detect the activity of the seeds.

[0004] Taking a device and method for loading a radioactive seed magazine with the publication number CN111840818A as an example, the device includes a vibration system (vibration disk) for supplying radioactive seeds, an escapement system arranged on a slide rail system, an assembly table for a particle bin assembly for fixing the radioactive seed magazine, and a control system; the method is specifically as follows: under the control of the control system, the escapement system, through the cooperation of the slide rail system, sequentially completes sucking radioactive seeds from the vibration system, transferring the sucked radioactive seeds above the assembly table and loading them into the particle bin assembly of the radioactive seed magazine. However, in the above device, the radioactive source is in an exposed state in the vibration disk, there is a problem of radiation leakage, and the vibration disk cannot achieve effective particle supply when the remaining number of particles is small. In addition, each time during loading, the feeding device usually stores more particles than the required number of particles (to prevent unqualified particle activity or quality). Therefore, after each magazine is loaded, the remaining particles also need to be recycled for subsequent loading. Summary of the Invention

[0005] The purpose of the present invention is to provide a magazine automatic loading device with a recycling function and its usage method to solve the existing technical defects and unmet technical requirements.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A magazine automatic loading device with a recycling function, comprising:

[0008] A magazine loading mechanism for successively loading radioactive sources into storage slots inside the magazine;

[0009] A radioactive source driving mechanism, which drives the radioactive source to move forward along the radioactive source loading channel by means of a push rod or air flow until the radioactive source enters the magazine loading mechanism;

[0010] A radioactive source feeding mechanism for outputting a plurality of radioactive sources from the output end of the radioactive source feeding mechanism;

[0011] A commutation mechanism for switching the connection between the output end of the radioactive source feeding mechanism and the input end of the radioactive source loading channel. The radioactive source driving mechanism drives the radioactive source to be loaded to enter the magazine loading mechanism along the radioactive source loading channel, thereby realizing the magazine loading operation; the commutation mechanism is connected to a radioactive source recovery container, and by switching the connection between the output end of the radioactive source feeding mechanism and the radioactive source recovery container through the commutation mechanism, the radioactive source feeding mechanism outputs the radioactive sources that do not need to be loaded into the radioactive source recovery container.

[0012] Preferably, the commutation mechanism includes a second commutation component. The radioactive source driving mechanism is a push rod driving mechanism or a blowing driving mechanism. The output end of the radioactive source driving mechanism is connected to one end of a driving output channel, and the other end of the driving output channel is connected to the second commutation component. One end of the radioactive source loading channel is connected to the second commutation component, and the other end of the radioactive source loading channel is connected to the magazine loading mechanism. The output end of the radioactive source feeding mechanism is connected to the second commutation component, and the radioactive source recovery container is connected to the second commutation component;

[0013] By switching the connection state of the channels through the second commutation component, the radioactive source driving mechanism drives the push rod or air flow to push the radioactive source to be loaded into the magazine loading mechanism, or the radioactive source feeding mechanism outputs the radioactive sources that do not need to be loaded into the radioactive source recovery container.

[0014] Preferably, the second commutation component includes a second commutation seat A and a second commutation seat B. The second commutation seat A is provided with a plurality of groups of second alignment holes. The first group of second alignment holes is communicated with the output end of the radioactive source feeding mechanism, and the driving output channel is communicated with the second group of second alignment holes. The second commutation seat B is provided with a second commutation hole, and the second commutation hole is communicated with the input end of the radioactive source loading channel. The second commutation component drives the commutation seat A to move on the commutation seat B through the commutation driving mechanism thereon to control the alignment holes to be docked with different commutation holes, thereby realizing the switching of the connection state of the channels.

[0015] Preferably, it further includes a radioactive source activity detector. When the radioactive source activity detector is arranged at the output end of the radioactive source feeding mechanism, the radioactive source activity detector is provided with a detection and material control mechanism. The detection and material control mechanism can control the passage or blockage of the radioactive source, and the radioactive source activity detector can detect the activity of the blocked radioactive source;

[0016] When the activity detection is unqualified, the output end of the radioactive source feeding mechanism is connected to the radioactive source recovery container through the commutation mechanism, and the radioactive source feeding mechanism outputs the unqualified radioactive source into the radioactive source recovery container; when the activity detection is qualified, the output end of the radioactive source feeding mechanism is connected to the input end of the radioactive source loading channel through the commutation mechanism, and the qualified radioactive source is output into the radioactive source loading channel.

[0017] Preferably, it further includes a first commutation component. The first commutation component includes a first commutation seat A and a first commutation seat B. The first commutation seat A is provided with a first alignment hole, and the first alignment hole is communicated with the driving output channel. The first commutation seat B is provided with two groups of first commutation holes. One ends of a positive pushing channel and a return pushing channel are respectively connected to the two groups of first commutation holes. The other end of the positive pushing channel is communicated with a second group of second alignment holes. The second commutation seat B is provided with a second group of second commutation holes, and the other end of the return pushing channel is communicated with the second group of second commutation holes;

[0018] The radioactive source recovery container is a recovery barrel. The second commutation seat A is further provided with a second alignment hole, and the second alignment hole is communicated with a recovery channel. The recovery channel is communicated with the recovery barrel. When the radioactive source activity detector detects that the radioactive source does not meet the requirements, the second commutation component first switches the return pushing channel to be communicated with the output end of the radioactive source feeding mechanism, so that the non-conforming radioactive source falls into the return pushing channel. Then the second commutation component switches the return pushing channel to be communicated with the recovery channel, and the radioactive source driving mechanism drives the push rod or air flow to push the non-conforming radioactive source into the recovery barrel;

[0019] Alternatively, the radioactive source recovery container is a waste funnel, and the waste funnel is directly arranged in the middle of the return pushing channel. When the radioactive source activity detector detects that the radioactive source does not meet the requirements, the second commutation component switches the return pushing channel to be communicated with the output end of the radioactive source feeding mechanism, so that the non-conforming radioactive source falls into the return pushing channel, and enters the waste funnel along the return pushing channel under the action of gravity and / or gas thrust.

[0020] Preferably, the radioactive source recovery container is a recovery bucket. The second commutation B seat is further provided with a second commutation hole, and the second commutation hole is communicated with a recovery channel, and the recovery channel is communicated with the recovery bucket. When the radioactive source activity detector detects that the radioactive source does not meet the requirements, the second commutation assembly directly switches the recovery channel to be communicated with the output end of the radioactive source feeding mechanism, so that the non-conforming radioactive source falls into the recovery bucket along the recovery channel under the action of gravity and / or gas thrust.

[0021] Preferably, the radioactive source feeding mechanism includes a radioactive source combing assembly and a radioactive source material control assembly. The radioactive source combing assembly combs the scattered radioactive sources and then inputs them into the radioactive source material control assembly one by one. The radioactive source material control assembly controls a specified number of radioactive sources to be output into the radioactive source loading channel. The radioactive source combing assembly and the radioactive source material control assembly are connected through a combing output channel. The output channel of the radioactive source feeding mechanism is the radioactive source material control channel of the radioactive source material control assembly, and the radioactive source material control assembly and the commutation mechanism are connected through the radioactive source material control channel.

[0022] Preferably, a guiding channel extends into the waste funnel from the entrance at the end of the waste funnel close to the first commutation assembly, and a funnel surface is provided at the exit at the end of the inner cavity of the waste funnel close to the second commutation assembly.

[0023] Preferably, the radioactive source combing assembly is provided with a first mounting seat for mounting the radioactive source feeding container, the magazine loading mechanism is provided with a magazine mounting seat for mounting the magazine, and a second mounting seat for mounting the radioactive source recovery container. The structures of the first mounting seat and the second mounting seat are exactly the same, which is convenient for the interchangeable installation of the radioactive source feeding container and the radioactive source recovery container. Electric plug interfaces are provided on the first mounting seat, the magazine mounting seat and the second mounting seat for burning the chip to record the loading and recovery conditions of the radioactive source.

[0024] A method for using a magazine automatic loading device with a recovery function includes the following steps:

[0025] The radioactive source feeding mechanism sends one or more radioactive sources to the radioactive source activity detector. The radioactive source activity detector detects the activity of the radioactive source. When the radioactive source activity detector detects that the activity of the radioactive source meets the requirements, the output end of the radioactive source feeding mechanism is switched to be communicated with the input end of the radioactive source loading channel through the commutation mechanism. The radioactive source activity detector releases the detected radioactive source, and the radioactive source enters the radioactive source loading channel. The radioactive source driving mechanism drives the push rod to send the qualified radioactive source along the radioactive source loading channel into the magazine loading mechanism to realize the magazine loading action. When the radioactive source activity detector detects that the activity of the radioactive source does not meet the requirements, the second commutation component switches the recovery channel to be communicated with the output end of the radioactive source feeding mechanism, so that the unqualified radioactive source enters the recovery bucket along the recovery channel under the action of gravity and / or gas thrust.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. By detecting the activity of the radioactive source with the radioactive source activity detector, the unqualified radioactive sources are separated to avoid loading unqualified radioactive sources into the magazine, which will not affect the subsequent radioactive particle implantation surgery. After the magazine is loaded, the present invention can also load the remaining radioactive sources in the feeding container into the recovery container for the next loading. The installation positions of the feeding container and the recovery container can be interchanged, which is convenient for installing the recovery container on the mounting seat of the feeding container as a new feeding container for the next loading.

[0028] 2. When the radioactive source activity detector detects that the activity of the radioactive source meets the requirements, the output end of the radioactive source control material channel is switched to be communicated with the input end of the radioactive source loading channel through the commutation mechanism, so that the radioactive source enters the radioactive source loading channel. The radioactive source driving mechanism drives these radioactive sources along the radioactive source loading channel into the magazine loading mechanism, and the foremost radioactive source enters the loading space of the radioactive source at the top of the storage slot of the magazine along the radioactive source output channel of the magazine, realizing the continuous automatic loading of one or more radioactive source particles. Moreover, the radioactive source particles are loaded into the magazine from the radioactive source output channel inside the magazine. The whole process does not require disassembling the particle magazine, avoiding the exposure of the radioactive source and the operator from being irradiated, and effectively improving the loading efficiency and safety. Description of the Drawings

[0029] Figure 1 It is a schematic structural diagram of the radiation protection chassis in Embodiment 1;

[0030] Figure 2 It is a schematic internal structural diagram after removing the radiation protection chassis in Embodiment 1;

[0031] Figure 3 It is a schematic structural diagram of the radioactive source combing component in Embodiment 1;

[0032] Figure 4 Right view of the radiation source sorting component in Example 1;

[0033] Figure 5 Structural schematic diagram of the second commutation component in Example 1;

[0034] Figure 6 Side view of the second commutation component in Example 1;

[0035] Figure 7 Partial cross-sectional view of the second commutation component in Example 1;

[0036] Figure 8 Structural schematic diagram of the radiation source material control component in Example 1;

[0037] Figure 9 Bottom view of the radiation source material control component in Example 1;

[0038] Figure 10 Internal cross-sectional view of the radiation source material control component in Example 1;

[0039] Figure 11 Internal structural schematic diagram of the radiation source material control component in Example 1;

[0040] Figure 12 Structural schematic diagram of the flapping mechanism in Example 1;

[0041] Figure 13 Side cross-sectional view of the flapping mechanism in Example 1;

[0042] Figure 14 Structural schematic diagram of the rod pulling mechanism in Example 1;

[0043] Figure 15 Right view of the rod pulling mechanism in Example 1;

[0044] Figure 16 For Example 1 Figure 15 Cross-sectional view;

[0045] Figure 17 For Example 1 Figure 16 Partial enlarged view;

[0046] Figure 18 Structural schematic diagram of the continuous loading of multi-particles in Example 1;

[0047] Figure 19 Structural schematic diagram of Example 2;

[0048] Figure 20 Structural schematic diagram of Example 3;

[0049] Figure 21 Side cross-sectional view of the waste funnel in Example 3;

[0050] Figure 22 It is a schematic structural diagram of Embodiment 4;

[0051] Figure 23 It is a schematic structural diagram of Embodiment 5;

[0052] Figure 24 It is a schematic structural diagram of Embodiment 6. Specific Embodiments

[0053] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0054] Embodiment 1

[0055] In this embodiment, the radiation source driving mechanism drives the radiation source to move forward along the radiation source loading channel through a push rod until the radiation source enters the magazine loading mechanism. Of course, it can also be that the radiation source driving mechanism drives the radiation source through air flow.

[0056] Such as Figures 1 to 18 , a magazine automatic loading device with a recycling function includes a radiation-proof chassis 241001, a flexible push rod driving device 241002, a push rod output channel 241003, a second commutation component 241007, a radiation source loading channel 241011, a particle loading device 241013, a radiation source combing component 241014, a combing output channel 241015, a radiation source material control component 241016, a particle activity detector 241017, a radiation source material control channel 241018, a particle recycling channel 241019, and a particle recycling barrel 241020.

[0057] The push rod driving mechanism of the flexible push rod driving device 241002 drives the flexible push rod in a friction driving manner. A part of the push rod driving mechanism is pressed against the flexible push rod, and the frictional force generated by the pressing drives the flexible push rod to move back and forth. The push rod driving mechanism is one or a combination of a friction wheel, a friction belt, and a reciprocating clamping component. Among them, the push rod driving mechanism preferably adopts the driving method of a friction wheel, presses the flexible push rod through the friction wheel, and the rotation of the friction wheel drives the flexible push rod to move back and forth.

[0058] Furthermore, it also includes a storage assembly for storing the flexible push rod, which is arranged at the rear end of the push rod driving mechanism. The storage assembly is a wheeled storage mechanism, which includes a storage wheel. The flexible push rod is wound around the inner side or the outer side of the storage wheel as the storage wheel rotates. The storage assembly is preferably a concave storage wheel, which is an internal recessed structure and has an opening on the side. The flexible push rod extends into the concave storage wheel from the side opening and is wound around the internal recess of the concave storage wheel.

[0059] The channel structure (such as the combing output channel 241015, the push rod output channel 241003, the radioactive source loading channel 241011, etc.) can adopt a pipeline structure or be realized by grooving on a plate structure, as long as a channel is formed for the radioactive source or the push rod to pass through.

[0060] The radiation proof chassis 241001 is a box-type structure assembled by box panels or a frame structure assembled by frame panels, and both the box panels or the frame panels are radiation proof panels. The radiation proof chassis is provided with a radiation proof door 24100101, and the radiation proof door is provided with radiation proof glass 24100102. The radiation proof chassis is also provided with a camera device for observing the automatic loading device inside to determine whether each device is abnormal. A radioactive sensor is provided at the bottom of the radiation proof chassis 241001, and the radioactive sensor is used to detect whether there is a radioactive source dropped from the loading device at the bottom of the chassis; the radiation proof chassis 241001 is also provided with a lighting lamp.

[0061] An observation window 24100103 is movably installed on the radiation protection chassis 241001 at the bell mouth position facing the radiation source combing component 241014. By opening the observation window, radioactive particles can be put into the radiation source combing component 241014, or the radiation source combing component 241014 can be installed into the system. The material of the observation window is lead glass, and the observation window can be connected to the radiation protection chassis 241001 in an openable and closable manner.

[0062] The flexible push rod driving device 241002, the radiation source combing component 241014, the second reversing component 241007, the radiation source material control component 241016, the particle filling device 241013, the particle activity detector 241017 and the particle recovery bucket 241020 are respectively installed in the radiation protection chassis 241001, the radiation source material control component 241016 is located below the radiation source combing component 241014, the particle activity detector 241017 is located at the lower part of the radiation source material control component 241016, the second reversing component 241007 is located below the radiation source material control component 241016, and the particle recovery bucket 241020 is located below the second reversing component 241007.

[0063] The radioactive source sorting component 241014 can output the radioactive sources in a vibrating manner. The radioactive source sorting component 241014 is a flared opening or a V-shaped groove or a vibrating disk. The radioactive sources are automatically arranged under their own gravity and vibration, and move downward along the sorting output channel 241015. Or the radioactive source sorting component 241014 is further connected to a blowing mechanism for blowing air. With the cooperation of the blowing action, the radioactive sources can be fed better. Preferably, in this embodiment, a flared opening structure is adopted.

[0064] The radioactive source material control component 241016 is provided with a camera for observing whether there are particles entering the radioactive source material control component 241016 and whether the appearance of the particles meets the requirements. The radioactive source material control component 241016 can control the radioactive sources inside it to fall one by one. The radioactive source material control component 241016 adopts a gate-type material control mechanism or a side extrusion-type material control mechanism, which can control the output of the radioactive sources. The gate-type material control mechanism blocks the radioactive sources through the gate to achieve material control; the side extrusion-type material control mechanism squeezes the internal channel (i.e., the radioactive source material control channel 241018). Since the squeezed part of this channel is flexible, it will be squeezed and narrowed, so that the internal radioactive sources are blocked, preventing the further movement of the radioactive sources to achieve material control.

[0065] Or, here it is also possible not to block across the sorting output channel 241015, but directly block the radioactive sources in contact.

[0066] The push rod driving mechanism of the flexible push rod driving device 241002 can drive the flexible push rod to reciprocate along the push rod output channel 241003 and the radioactive source loading channel 241011 to achieve the work of pushing the radioactive sources.

[0067] The second commutation component 241007 can make the radioactive source material control channel 241018 communicate with the radioactive source loading channel 241011 and the particle recovery channel 241019 respectively. When the radioactive source material control channel 241018 communicates with the radioactive source loading channel 241011, the radioactive sources in the radioactive source material control channel 241018 are introduced into the radioactive source loading channel 241011 (under the action of gravity, or under the combined action of gravity and air flow. Preferably, the air flow enters from the flared opening structure of the radioactive source sorting component 241014).

[0068] The radioactive source material control component 241016 can also be separately provided with another push rod driving mechanism arranged in the reverse direction, so as to realize the function of recovering the radioactive sources remaining in the radioactive source material control component 241016 or dredging the radioactive source sorting component 241014.

[0069] The particle activity detector 241017 is located at the middle position of the radioactive source control material channel 241018. The radioactive source is transported through the radioactive source control material channel 241018 to the particle activity detector 241017 for detection. If it meets the requirements, it will be directly transported to the radioactive source loading channel 241011 through the second commutation assembly 241007, and then transported into the particle loading device 241013. If it does not meet the requirements, it will be commutated through the second commutation assembly 241007 and transported to the particle recovery channel 241019. Under the action of gravity, or under the combined action of gravity and air flow, the radioactive source with unqualified activity detection enters the particle recovery barrel 241020. For the radioactive source with unqualified appearance detection, the same method can also be used for recovery.

[0070] The radioactive source sorting component 241014 includes a first feeder 24101403 and a vibrating feeding drive mechanism for driving the first feeder 24101403 to reciprocate up and down. The first feeder 24101403 has a flared structure. An upper cover 24101401 is buckled or screwed onto the upper part of the first feeder 24101403. An air passage joint is provided on the first feeder 24101403 or the upper cover 24101401, which can be quickly connected to the air passage and connected to an air pump through the air passage, so as to blow air through the air pump to the entire passage, enabling the radioactive source to fall more smoothly. The lower part of the first feeder 24101403 is communicated with a sorting output passage 241015. The vibrating feeding drive mechanism includes a feeding drive motor 24101408 and a transmission component. The feeding drive motor 24101408 is installed on a feeding drive motor fixing plate 24101407. The feeding drive motor fixing plate 24101407 is installed on a longitudinal partition in the radiation-proof chassis through a support column 24101411. The main shaft of the feeding drive motor 24101408 passes through the feeding drive motor fixing plate 24101407. A transmission component is connected to the main shaft of the feeding drive motor 24101408. The transmission component is a crank-slider mechanism. The transmission component includes a crank 24101406, a first connecting rod 24101405 and a second slider seat 24101409. The crank 24101406 is installed on the main shaft of the feeding drive motor 24101408. A first connecting rod 24101405 is connected to the crank 24101406. The first connecting rod 24101405 is hinged to a second slider seat 24101409. The second slider seat 24101409 is connected to the first feeder 24101403. A vertical slide rail 24101412 is installed on the feeding drive motor fixing plate 24101407. A slider 24101410 is fitted on the vertical slide rail 24101412. The back of the second slider seat 24101409 is fixedly connected to the slider 24101410. A connecting seat 24101402 is fixedly connected to the front side of the second slider seat 24101409. The feeder is detachably installed on the connecting seat 24101402. A quick connector A 24101404 is connected to the sorting output passage 241015 and is detachably installed at the lower end of the first feeder 24101403.

[0071] During the daily transportation process, the discharge port of the first feeder 24101403 is blocked by the first plug or valve, and the gas path channel joint is also blocked by the second plug to prevent the leakage of particles and radiation. The lower end of the first feeder 24101403 is connected to the first plug through the first connecting piece. Both the lower end of the first feeder 24101403 and the first plug can rotate relative to the first connecting piece around the axis. The first feeder 24101403 or the upper cover 24101401 is also connected to the second plug through the second connecting piece, and the first feeder 24101403 or the upper cover 24101401 can rotate relative to the second connecting piece around the axis, which can effectively prevent the loss of the first plug and the second plug. Or the first plug and the second plug are integrally designed as a slender rod, which is inserted into one end of the quick air pipe joint and blocks the discharge port of the first feeder 24101403 at the same time.

[0072] A storage chip is also provided on the first feeder 24101403. When the second slider seat 24101409 is connected to the first feeder 24101403, the storage chip is docked with the chip read-write port on the second slider seat 24101409 to read and write the information in the storage chip. The storage chip stores information such as the production time, activity, and operator of the radiation source in the first feeder 24101403, realizing the full-process traceability of the radiation source.

[0073] The transmission component can also be replaced by a combination of a curve chute mechanism, a cam mechanism, and a spring structure, etc. Or the vibration feeding drive mechanism adopts a vibration motor or the principle of electromagnetic attraction, and realizes the up-and-down reciprocating vibration of the feeder through the change of the magnetic field direction.

[0074] The second commutation component 241007 includes a drive motor 24100401, a commutation mounting seat 24100403, a limit block 24100404, a switch adjustment seat 24100406, a limit switch 24100407, a second commutation B seat 24100701, a second commutation A seat 24100702, and a commutation drive mechanism that drives the second commutation A seat 24100702 to move left and right relative to the second commutation B seat 24100701; its limit switch 24100407 and switch adjustment seat 24100406 are installed on the commutation mounting seat 24100403 and are below the guide plate 24100408, and the limit block 24100404 is installed on the commutation mounting seat 24100403 and is at the left and right ends of the guide plate 24100408.

[0075] The commutation mounting base 24100403 is fixed on the longitudinal partition in the radiation-proof chassis. The second commutation B seat 24100701 is provided with at least one group of commutation holes, and the second commutation A seat 24100702 is provided with at least one group of alignment holes. The first commutation B seat 241004010 is fixed on the front side of the commutation mounting base 24100403. The commutation fixing base 24100403 is provided with a limiting protrusion for limiting the left and right movement of the second commutation A seat 24100702 to the extreme position. The second commutation A seat 24100702 is driven by a commutation driving mechanism and guided by a commutation guiding assembly to move left and right on the second commutation B seat 24100701, so that one of the alignment holes can be respectively communicated with the other commutation hole. Or the commutation A seat and the commutation B seat of the second commutation assembly 241007 can rotate relative to each other, and one of the alignment holes is respectively communicated with the other commutation hole through rotation control.

[0076] The commutation driving mechanism includes a driving motor 24100401, a moving slide rail 24100405, a moving slider 241004019, a guide plate 24100408, a driving gear 241004015, a driving rack 241004014 and a flexible connecting block 241004013. The driving rack 241004014 and the flexible connecting block 241004013 are installed on the guide plate 24100408 and fixed to the commutation mounting base 24100403 through the moving slider 241004019 and the moving slide rail 24100405. The output shaft of the driving motor 24100401 is connected with the driving gear 241004015 and is in gear connection with the driving rack 241004014 on the mounting base 24100403. The flexible connecting block 241004013 is connected with the second commutation A seat 24100702. The commutation guiding assembly includes a guiding slide rail 2410040211 and a guiding slider 241004020 that cooperates with the guiding slide rail 2410040211. The guiding slide rail 2410040211 is installed on the second commutation B seat 24100701, and the guiding slider 241004020 is installed at the bottom of the second commutation A seat 24100702.

[0077] The commutation drive mechanism can also be replaced by a crank - connecting rod mechanism, a lead screw - nut mechanism, etc. The left - right movement stroke of the commutation drive mechanism can be controlled by a limit switch 24100407. When the commutation drive mechanism is at the stroke limit on one side, through the elastic deformation of the flexible connection block 241004013, a pushing and pulling force is applied to press the second commutation seat A 24100702 against the limit protrusion on the second commutation seat B 24100701, realizing high - precision mechanical positioning. Therefore, the left - right movement stroke of the commutation drive mechanism should be greater than the left - right movement stroke of the second commutation seat A 24100702. The limit protrusion is provided with two positioning inclined planes A at a certain angle, and correspondingly, the second commutation seat A 24100702 is provided with two positioning inclined planes B at a certain angle. The positioning inclined plane A and the positioning inclined plane B cooperate with each other to realize mechanical positioning in two directions, so that the commutation holes are accurately aligned.

[0078] On the second commutation seat A 24100702 of the second commutation assembly 241007, there are two groups of alignment holes, namely the second alignment hole b 24100704 and the second alignment hole c 24100703. On the second commutation seat B 24100701, there are two groups of transposition holes, namely the second transposition hole b 24100707 and the second transposition hole c 24100708. The lower end of the radiation source material control channel 241018 is installed on the second alignment hole b 24100704, the lower end of the push rod output channel 241003 is installed on the second alignment hole c 24100703, the upper end of the particle recovery channel 241019 is installed on the second transposition hole b 24100707, and the upper end of the radiation source loading channel 241011 is installed on the second transposition hole c 24100708. The commutation drive mechanism can drive the second commutation seat A 24100702 to move relative to the second commutation seat B 24100701, so that the second alignment hole c 24100703 is communicated with the second transposition hole c 24100708, the push rod output channel 241003 is communicated with the radiation source loading channel 241011, the second alignment hole b 24100704 is communicated with the second transposition hole b 24100707, and the radiation source material control channel 241018 is communicated with the particle recovery channel 241019.

[0079] The commutation drive mechanism can drive the second commutation seat A 24100702 to move relative to the second commutation seat B 24100701. The second alignment hole b 24100704 can be respectively communicated with the second transposition hole b 24100707 or the second transposition hole c 24100708, so that the radiation source material control channel 241018 can be respectively communicated with the particle recovery channel 241019 or the radiation source loading channel 241011, realizing sending unqualified particles or the redundant particles of the radiation source sorting assembly 241014 into the particle recovery bucket 241020, or realizing sending qualified particles into the radiation source loading channel 241011.

[0080] The radioactive source material control assembly 241016 includes a material control fixing base 24101601, a positioning quick connector 24101607 installed on the material control fixing base 24101601 and capable of positioning and guiding the combing output channel 241015, at least two groups of material control push blocks 24101611 installed on the guiding groove plate 24101614, a light-shielding cover 24101602 movably installed on the material control fixing base 24101601, and at least two groups of material control driving mechanisms 24101606. Each group of material control driving mechanisms 24101606 corresponds to a group of material control push blocks 24101611. The material control driving mechanism 24101606 can drive the material control push block 24101611 to close or open the guiding groove of the guiding groove plate 24101614, so as to realize the extrusion material control or blocking material control of the radioactive source transportation. An elastic telescopic structure is provided inside the material control push block 24101611. When the radioactive source is extruded, the elastic telescopic structure can be compressed inward, which can avoid the radioactive source being extruded and deformed by rigid extrusion. The material control fixing base 24101601 is floatingly installed on the longitudinal partition plate inside the radiation-proof machine box. The transparent cover plate 24101615 can be buckled or opened and closed on the guiding groove plate 24101614 through a buckle 24101619, so that the guiding groove on the guiding groove plate 24101614 is in a sealed state, and at the same time it is convenient to open and clean the guiding groove plate 24101614. Of course, the material control structure can also be replaced by a friction material control mechanism or a visual high-speed material control mechanism.

[0081] A group of material control support columns 24101603 are respectively connected to the four corners of the material control fixing base 24101601 through tension springs 24101605. The four groups of material control support columns 24101603 are respectively fixedly installed on the longitudinal partition plate inside the radiation-proof machine box. The back of the material control fixing base 24101601 is connected to a motor fixing plate 24101609 through a connecting column 24101610. A motor 24101608 is installed on the motor fixing plate 24101609. An eccentric wheel 241016020 is installed on the output shaft of the motor. The motor drives the eccentric wheel 241016020 to rotate. Since the material control fixing base 24101601 is floatingly connected to the material control support column 24101603, when the eccentric wheel 241016020 rotates, it will drive the material control fixing base 24101601 to vibrate. During the vibration of the material control fixing base 24101601, the radioactive source can smoothly fall in the guiding groove of the guiding groove plate 24101614 under the dual action of gravity and vibration.

[0082] In order to improve the vibration effect, the motor equipped with an eccentric wheel can also be changed to a flapping mechanism, which directly performs cyclic flapping on the entire material control fixing base 24101601.

[0083] Among them, the flapping mechanism is specifically: as Figure 12 and Figure 13, the flapping mechanism includes a flapping eccentric wheel 101. An installation groove 1011 is provided on the side of the eccentric wheel 101. A flapping head 103 is rotatably installed in the installation groove 1011 through a rotating column 102. The flapping head 103 can rotate around the rotating column 102. A torsion spring 104 is sleeved outside the rotating column 102. The elastic force of the torsion spring 104 drives the flapping head 103 to press tightly against the pressing column 105. The eccentric wheel 101 is rotated by a motor, driving the flapping head 103 to perform cyclic flapping on the material control fixing seat 24101601 or the second commutation assembly 241007 as a whole. Since when the flapping head 103 contacts the material control fixing seat 24101601 or the second commutation assembly 241007 as a whole, the flapping head 103 will compress the torsion spring 104 and rotate, it will not cause damage to the material control fixing seat 24101601 or the second commutation assembly 241007 as a whole.

[0084] A cam 24101613 is installed on the output shaft of the material control driving mechanism 24101606. The light-shielding cover 24101602 can be installed on the material control fixing seat 24101601 through a housing buckle 24101604. The cam 24101613 is located between the material control fixing seat 24101601 and the light-shielding cover 24101602. Two groups of material control driving mechanisms and a material control push block 24101611 are arranged staggered from top to bottom on both sides of the guide groove of the guide groove plate 24101614.

[0085] Two groups of trigger switches 24101612 are respectively installed on the circumference of the cam 24101613 corresponding to each group of material control driving mechanisms on the material control fixing seat 24101601. A trigger part 24101621 is provided on the side of the cam 24101613. When the convex part of the cam pushes or disengages from the material control push block 24101611 during the rotation of the cam 24101613, the trigger part 24101621 can respectively contact the corresponding trigger switch 24101612, facilitating the control of the rotation stroke of the cam.

[0086] When the material control driving mechanism 24101606 drives the cam 24101613 to rotate, the convex part of the cam 24101613 can push the material control push block 24101611 closer to the guide groove side of the guide groove plate 24101614, so as to extrude the radioactive source conveyed down, stop the radioactive source from falling, and achieve material control. When material dropping is required, the material control driving mechanism 24101606 at the penultimate position drives the cam 24101613 to rotate, so that the convex part of the cam 24101613 pushes the material control push block 24101611 closer to the guide groove side of the guide groove plate 24101614, thereby squeezing the second-to-last radioactive source conveyed down to prevent the second-to-last radioactive source from falling together. Then, the material control driving mechanism 24101606 at the lowermost part drives the cam 24101613 to rotate, so that the convex part of the cam 24101613 disengages from the material control push block 24101611, and the material control push block 24101611 resets, thus moving away from the guide groove side wall of the guide groove plate 24101614, releasing the channel, and enabling the lowermost radioactive source to fall to achieve feeding (under the action of gravity, or under the combined action of gravity and vibration, or under the combined action of gravity, vibration and air flow).

[0087] A visual detection module capable of detecting whether particles are dropping is installed in the light-shielding cover 24101602 (because the radioactive source combing assembly 241014 may not be able to comb and drop the particles in time, and at this time, the radioactive source material control assembly 241016 cannot open the guide groove of the guide groove plate 24101614 to avoid misoperation). The visual detection module can also count and statistically analyze the dropped particles and detect their shapes at the same time (if there are defects in the shape of the particles, they need to be sent into the particle recovery bucket 241020 like the particles with unqualified activity detection). The visual detection module includes a light-shielding cover, a camera and a light source. The light-shielding cover is installed at the front end of the camera lens, the light source is installed on the side of the camera, and the camera and the light source can be aligned with the guide groove of the guide groove plate 24101614.

[0088] Or the light source is installed on the back of the guide groove plate 24101614, and a thinning part is provided at the position of the guide groove plate 24101614 corresponding to the light source. The thickness of the thinning part is less than 5 mm. The guide groove plate 24101614 is made of one or a combination of plastic, ceramic or glass materials, so that the light source can transmit light through the thinning part.

[0089] The particle activity detector 241017 is located between the radioactive source control material component 241016 and the second commutation component 241007, and is at the middle position of the radioactive source control material channel 241018. The particle activity detector 241017 is installed on the longitudinal partition in the radiation-proof chassis. The particle activity detector 241017 detects the activity of the radioactive source passing through the radioactive source control material channel 241018. In order to improve the detection accuracy, it is provided with a shielding shell that can shield the interference radiation in the environment. The radioactive source control material channel 241018 penetrates through the shielding shell, and a detection and control material mechanism (not shown in the figure, and its specific structure is similar to that of the radioactive source control material component 241016) is provided on the radioactive source control material channel 241018. When the detection and control material mechanism blocks the radioactive source passing through the radioactive source control material channel 241018, at this time the radioactive source is exactly in the middle of the shielding shell, and the detection and control material mechanism leaves enough long detection time for the particle activity detector 241017 to ensure the detection accuracy.

[0090] When the detection passes, the detection and control material mechanism releases the particle. The second commutation component 241007 drives the radioactive source control material channel 241018 to communicate with the radioactive source loading channel 241011, and the qualified radioactive source enters the radioactive source loading channel 241011. Then, the second commutation component 241007 drives the push rod output channel 241003 to communicate with the radioactive source loading channel 241011, and the flexible push rod driving device 241002 drives the flexible push rod to push the particle into the radioactive source loading channel 241011 for loading. The unqualified radioactive source is commutated through the second commutation component 241007 to realize the communication between the radioactive source control material channel 241018 and the particle recovery channel 241019, so that the particle enters the particle recovery bucket 241020 through the particle recovery channel 241019.

[0091] The radioactive source loading channel 241011 is also provided with a detection sensor 241012. The detection sensor 241012 adopts a travel switch. After the detection sensor 241012 is triggered, at this time, the position of the front end of the flexible push rod can be judged by the measuring device in the flexible push rod driving device 241002. If there is a certain distance between the front end of the flexible push rod and the travel switch, it means that one or several radioactive sources have been pushed out at this time, and the number of radioactive sources pushed out can be calculated through the distance.

[0092] Before each use, the push rod driving mechanism can also be calibrated based on this travel switch to avoid the situation that the measurement wheel in the push rod driving mechanism is worn and causes inaccurate measurement.

[0093] The push rod driving mechanism of the flexible push rod driving device 241002 uses a friction wheel to drive the flexible push rod to reciprocate back and forth. There is a measuring wheel in the push rod driving mechanism of the flexible push rod driving device 241002. The flexible push rod will drive the measuring wheel to rotate. The measuring wheel is equipped with an encoder. By detecting the rotation angle of the measuring wheel through the encoder, the moving distance of the flexible push rod can be calculated. The length of the flexible push rod is greater than 600 mm.

[0094] The particle loading device 241013 adopts a bottom loading method, a top loading method or a rotary loading method. This solution adopts the bottom loading method. The particle loading device 241013 includes a bottom loading device and a rod pulling mechanism 24101301. The bottom loading device includes a magazine clamping seat 24101304 and a top pushing driving mechanism 24101305. The particle magazine 24101303 is detachably clamped on the magazine clamping seat 24101304 (inverted installation so that the particles in the storage tank can be affected by the downward gravity). The magazine clamping seat 24101304 is installed on the longitudinal partition in the radiation-proof chassis. The rod pulling mechanism 24101301 can clamp the pull rod through a claw, or clamp the pull rod through a friction wheel, or directly push the step surface of the pull rod. Driven by the rod pulling driving mechanism, the pull rod is gradually pulled downward, so that all the particles in the storage tank move downward, thus creating a loading space for one particle in the radiation source output channel 24101303002 at its top.

[0095] Then the flexible push rod driving device 241002 drives the flexible push rod to push the first particle among the multiple particles at the front end of the flexible push rod into the loading space, completing the loading of one particle. Then the rod pulling mechanism 24101301 pulls the pull rod downward again to create space, and then inserts the second particle to complete the loading of the second particle. Repeat this process multiple times to achieve automatic loading of multiple particles.

[0096] During the process of pulling the pull rod downward, in order to prevent all the particles in the storage tank from not falling in time (due to reasons such as friction and adhesion), there is also a top pushing driving mechanism 24101305. The top pushing driving mechanism 24101305 includes a downward pressing driving mechanism. The downward pressing driving mechanism drives the top block to press all the particles in the storage tank of the particle magazine into the storage tank through the downward pressing hole at the bottom of the particle magazine, thus creating a loading space for one particle; the downward pressing driving mechanism is one or a combination of a cam mechanism, a crank-slider mechanism, a link mechanism, a rack and pinion mechanism, and a lead screw nut mechanism. Or, there is a top block at the bottom of the magazine. By squeezing the top block, the top block then presses all the particles in the storage tank of the particle magazine to move downward, thus creating a loading space for one particle.

[0097] Alternatively, an air blowing hole is provided at the bottom of the particle magazine. By blowing air into the air blowing hole, all the particles in the storage slot of the particle magazine are pushed downward, thus creating a loading space for one particle.

[0098] During the loading process of the radiation source, when the particle magazine 24101303 is loaded into the magazine clamping seat 24101304, due to the limiting structure in the magazine clamping seat 24101304, the limiting plate 24101303001 on one side of the particle magazine 24101303 closes one end of the radiation source output channel 24101303002, and the limiting plate 24101303001 on the other side opens the other end of the radiation source output channel 24101303002, thereby restricting the position of the radiation source in the radiation source output channel 24101303002 and preventing the radiation source from being pushed too far by the flexible push rod, so that the radiation source is exactly located directly above the storage slot.

[0099] The pull rod mechanism 24101301 is located below the particle magazine 24101303. The jaw driving mechanism of the pull rod mechanism 24101301 can drive the jaws to reciprocate. The jaws can clamp the lower part of the pull rod 24101302. A through hole is provided at the top of the particle magazine 24101303. The pull rod 24101302 passes through the through hole and the upper end of the pull rod 24101302 is detachably connected to the pressing piece in the storage slot of the particle magazine 24101303. An elastic member is installed outside the pull rod 24101302 and between the pressing piece and the inner top of the particle magazine 24101303. The lower end of the pull rod 24101302 is clamped by the jaws of the pull rod mechanism 24101301. The top push driving mechanism 24101305 presses down the radiation source in the storage slot to move it downward by a radiation source loading space. At the same time, the pull rod mechanism 24101301 drives the jaws clamping the pull rod 24101302 to also move downward by a distance of a radiation source loading space, thereby creating a loading space for one radiation source in the particle magazine 24101303 and preparing for loading the next radiation source. The jaw driving mechanism of the pull rod mechanism 24101301 adopts one or a combination of a direct connection type driving mechanism, a lead screw nut mechanism, and a gear rack mechanism.

[0100] As an alternative, the pull rod mechanism 24101301 can also be omitted. At this time, it completely relies on the top push driving mechanism 24101305 to press down the radiation source in the storage slot to move it downward by a radiation source loading space, thereby creating a loading space for one radiation source in the particle magazine 24101303, and cooperating with the limiting plate of the particle magazine 24101303 to close one end of the radiation source output channel 24101303002 can also achieve the bottom loading of the particles.

[0101] Alternatively, as an alternative solution, the push drive mechanism 24101305 can also be omitted. In this case, relying entirely on the drive of the pull rod mechanism 24101301, the pull rod 24101302 is gradually pulled downward, causing all the particles located in the storage groove to move downward, thereby creating a loading space for one particle in the radiation source output channel 24101303002 at its top. And by cooperating with the limiting plate 24101303001 of the particle magazine 24101303 to close one end of the radiation source output channel 24101303002, bottom loading of the particles can also be achieved.

[0102] When the loading of the particle magazine 24101303 is completed, the jaws of the pull rod mechanism 24101301 release the pull rod 24101302, and the particle magazine 24101303 is taken out. The limiting plates 24101303001 on both sides of the particle magazine 24101303 will close both ends of the radiation source output channel 24101303002 to prevent the leakage of the radiation source or radiation leakage. A particle magazine cap is provided on the particle magazine 24101303. The particle magazine cap is connected to the end of the particle magazine by screwing or snapping. The pull rod 24101302 passes through the through hole on the particle magazine cap, and the pressing plate and the pull rod 24101302 are also connected by screwing or snapping, which can be quickly disassembled. After the pressing plate and the pull rod 24101302 are disassembled, the spring between the particle magazine cap and the pressing plate pushes the pressing plate, thereby pressing the radiation source in the particle magazine 24101303 tightly between the radiation source output channel 24101303002 and the pressing plate. Finally, a sealing cap is placed on the particle magazine cap to cover the through hole of the particle magazine cap to prevent radiation leakage. A connecting strip is provided between the particle magazine cap and the sealing cap, and both the particle magazine cap and the sealing cap can rotate relative to the connecting strip around the axis, thus preventing the loss of the sealing cap. Elastic rings are provided at the threaded connection parts of the particle magazine cap, the sealing cap, and the particle magazine 24101303 to achieve thread loosening prevention.

[0103] Finally, the second commutation component 241007 drives the radiation source material control channel 241018 to communicate with the particle recovery channel 241019, and loads the remaining radiation sources in the first feeder 24101403, the carding output channel 241015, and the radiation source material control component 241016 into the particle recovery bucket 241020 (this particle recovery bucket 241020 and the particle recovery bucket 241020 containing unqualified radiation sources may not be the same one, and the two are distinguished to achieve classified recovery), thus completing the entire loading process.

[0104] The steps for loading the particle magazine are as follows:

[0105] 1. Position and fix the particle magazine 24101303 to be loaded on the magazine clamping seat 24101304;

[0106] 2. The radioactive source sorting component 241014 outputs the radioactive source in a vibrating manner. The radioactive source falls under its own gravity and vibration and moves downward along the sorting output channel 241015, and then the radioactive source control component 241016 releases the radioactive source one by one. The camera in the radioactive source control component 241016 performs an appearance inspection on the particles, and the particle activity detector 241017 detects the activity of the particles passing through the radioactive source control channel.

[0107] 3. When the detection is passed, the second commutation component 241007 makes the radioactive source control channel 241018 communicate with the radioactive source loading channel 241011. The qualified radioactive source enters the radioactive source loading channel 241011, and then the second commutation component 241007 makes the push rod output channel 241003 communicate with the radioactive source loading channel 241011. Then, driven by the flexible push rod, the radioactive source is sent into the loading mechanism through the radioactive source loading channel 241011 for loading.

[0108] When the detection fails, the second commutation component 241007 makes the radioactive source control channel 241018 communicate with the particle recovery channel 241019, and sends the unqualified radioactive source into the particle recovery channel 241019. The unqualified radioactive source falls into the particle recovery bucket 241020 under the action of gravity or gas.

[0109] 4. For the case of qualified detection, the top push driving mechanism 24101305 first presses down the radioactive source to make it move downward by a radioactive source loading space. At the same time of pressing down, the rod pulling mechanism 24101301 drives the pull rod 24101302 to also move downward by a distance of a radioactive source loading space, so as to avoid applying too much pressure on the particles and damaging them, thus making a loading space for a radioactive source for the particle magazine 24101303. Then, when the push rod driving mechanism drives the flexible push rod to push the foremost radioactive source into the loading space, the limiting plate of the particle magazine 24101303 restricts the position of the radioactive source in the radioactive source output channel 24101303002 so that it is exactly located in the radioactive source loading space.

[0110] 5. Repeat the above steps until the loading of the particle magazine is completed.

[0111] Such as Figure 18Alternatively, in step 3, multiple qualified radiation sources enter the radiation source loading channel 241011. The multiple radiation sources are arranged in the radiation source loading channel 241011 in the front-to-back order. Then, driven by the flexible push rod 1, the multiple radiation sources enter the radiation source output channel 24101303002 of the particle magazine 24101303, and the frontmost radiation source is pushed into the radiation source loading space. Next, the top push driving mechanism 24101305 is activated to press down the radiation source in the radiation source loading space, causing it to move downward by a distance equal to the radiation source loading space. While pressing down, the rod pulling mechanism 24101301 drives the pull rod 24101302 to also move downward by a distance equal to the radiation source loading space. At this time, the top push driving mechanism 24101305 resets to vacate the radiation source loading space again, and the flexible push rod 1 pushes the subsequent radiation sources to continue entering the radiation source loading space, and this step is repeated to load the multiple radiation sources in sequence.

[0112] Embodiment 2

[0113] This embodiment refers to the working principle of Embodiment 1, and the difference from Embodiment 1 is as follows:

[0114] As Figure 19 , a first commutation component 241004 is further provided, and the unqualified radiation sources are recovered by the way of back pushing. The particle recovery barrel 241020 is connected to the second commutation component 241007 through the particle recovery channel 241019.

[0115] The particle recovery channel 241019 and the particle recovery barrel 241020 are arranged above the second commutation component 241007.

[0116] The first commutation component 241004 is located below the flexible push rod driving device 241002. The operation principles of the first commutation component 241004 and the second commutation component 241007 are the same, so no specific introduction will be given here.

[0117] The first commutation component 241004 can conduct the push rod output channel 241003 at the lower end of the flexible push rod driving device 241002 to the back push channel 241005 or the front push channel 241006 respectively.

[0118] The second commutation component 241007 can conduct the front push channel 241006 to the radiation source loading channel 241011, or the radiation source material control channel 241018 to the radiation source loading channel 241011, or the radiation source material control channel 241018 to the back push channel 241005, or the back push channel 241005 to the particle recovery channel 241019.

[0119] During the process of loading the radiation source, when the particle activity detector 241017 detects that the radiation source meets the requirements and the appearance inspection is also qualified, the second commutation component 241007 drives the radiation source control material channel 241018 to communicate with the radiation source loading channel 241011, and sends several radiation sources into the radiation source loading channel 241011 (under the action of gravity, or under the combined action of gravity and air flow). The first commutation component 241004 drives the push rod output channel 241003 to communicate with the positive top channel 241006, and then the second commutation component 241007 controls the positive top channel 241006 to communicate with the radiation source loading channel 241011, driving the flexible push rod to push the radiation source into the particle loading device to achieve loading.

[0120] When the particle activity detector 241017 detects that the radiation source does not meet the requirements, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the return top channel 241005. The second commutation component 241007 first drives the return top channel 241005 to communicate with the radiation source control material channel

[0121] 241018, so that the non-compliant radiation source falls into the return top channel 241005. Then the second commutation component 241007 drives the return top channel 241005 to communicate with the particle recovery channel 241019. At this time, driving the flexible push rod pushes the radiation source in the return top channel 241005 upwards into the particle recovery bucket 241020 to achieve particle recovery.

[0122] When the loading is completed, when there are still remaining radiation sources in the radiation source control material component 241016 and the combing output channel 241015, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the return top channel 241005. The second commutation component 241007 drives the return top channel 241005 to communicate with the radiation source control material channel 241018, driving the flexible push rod into the radiation source control material channel 241018 and the combing output channel 241015, and pushing the radiation source in the combing output channel 241015 upwards into the horn feeder of the radiation source combing component 241014 for recovery and storage.

[0123] Embodiment 3

[0124] This embodiment refers to the working principles of Embodiment 1 and Embodiment 2, and the difference from Embodiment 2 is that:

[0125] Such as Figure 20 and Figure 21, the particle recovery bin is replaced by a waste funnel 2410201. The waste funnel 2410201 is arranged at a position of the return top channel 241005 close to the second commutation component 241007. The detected unqualified radiation source falls into the waste funnel 2410201 under the action of its own gravity, vibration and / or gas thrust.

[0126] As Figure 21 , at the lower end of the waste funnel 2410201, and at the entrance of the end close to the first commutation component 241004, a guiding channel 24102011 extends into the waste funnel 2410201. When a flexible push rod is inserted along the guiding channel 24102011, the flexible push rod will finally extend out from the other end under the guidance of the funnel surface in the waste funnel 2410201, realizing normal passage.

[0127] During the process of loading the radiation source, when the particle activity detector 241017 detects that the radiation source meets the requirements, the second commutation component 241007 drives the radiation source control material channel 241018 to communicate with the radiation source loading channel 241011, so that the radiation source in the radiation source control material channel 241018 is introduced into the radiation source loading channel 241011 (under the action of gravity, or under the combined action of gravity and air flow). The first commutation component 241004 drives the push rod output channel 241003 to communicate with the positive top channel 241006, and then the second commutation component 241007 controls the positive top channel 241006 to communicate with the radiation source loading channel 241011. The push rod driving mechanism then drives the flexible push rod to push the radiation source into the particle loading device to complete the loading.

[0128] When the particle activity detector 241017 detects that the radiation source does not meet the requirements, the second commutation component 241007 drives the return top channel 241005 to communicate with the radiation source control material channel 241018, so that the unqualified radiation source falls into the waste funnel 2410201 in the return top channel 241005 to complete the recovery of particles. And a guiding channel extends into the waste funnel 2410201 from the entrance of the end close to the first commutation component 241004 of the waste funnel 2410201. When a flexible push rod is inserted along the guiding channel, the flexible push rod will finally extend out from the other end under the guidance of the funnel surface in the waste funnel 2410201, realizing normal passage.

[0129] When particles enter the waste funnel 2410201 from the outlet at the end of the waste funnel 2410201 close to the second commutation component 241007, it is almost impossible for the particles to accurately enter the guiding channel (the guiding channel can also be higher than the outlet of the waste funnel 2410201, making it impossible for the particles to enter the guiding channel under the action of gravity). Instead, the particles enter the cavity of the waste funnel 2410201 to realize the collection of unqualified particles.

[0130] After loading is completed, when there is still remaining radioactive source in the combing output channel 241015 and the radioactive source control component 241016, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the return top channel 241005, and the second commutation component 241007 drives the return top channel 241005 to communicate with the radioactive source control channel 241018, driving the flexible push rod into the radioactive source control channel 241018 and the combing output channel 241015, and pushing the radioactive source in the combing output channel 241015 upward into the horn feeder of the radioactive source combing component 241014 for recycling and storage.

[0131] Or after loading is completed, a new waste funnel 2410201 can be replaced. The second commutation component 241007 drives the radioactive source control channel 241018 to communicate with the return top channel 241005, and all the remaining radioactive sources in the radioactive source combing component 241014, the combing output channel 241015 and the radioactive source control component 241016 are discharged into the new waste funnel 2410201, which is distinguished from the waste funnel 2410201 containing unqualified radioactive sources, so as to achieve classified recycling.

[0132] Embodiment 4

[0133] This embodiment refers to the working principles of Embodiment 1, Embodiment 2 and Embodiment 3, and the difference from Embodiment 2 is that:

[0134] As Figure 22 , the particle recovery barrel is replaced by a waste funnel 2410201. The waste funnel 2410201 is arranged at the part of the return top channel 241005 close to the second commutation component 241007, and the radioactive source detected as unqualified falls into the waste funnel 2410201 under the action of its own gravity and vibration and / or gas thrust.

[0135] It further includes a three-way joint 241009 and a channel e241010. The first branch of the three-way joint 241009 is connected to the second commutation component 241007 through the channel e241010, the second branch of the three-way joint 241009 is connected to the positive top channel 241006, and the main path of the three-way joint 241009 is connected to the radioactive source loading channel 241011.

[0136] During the process of loading the radiation source, when the particle activity detector 241017 detects that the radiation source meets the requirements, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the positive top channel 241006, and the second commutation component 241007 drives the radiation source control material channel 241018 to communicate with the radiation source loading channel 241011, so that the radiation source in the radiation source control material channel 241018 is introduced into the radiation source loading channel 241011 through the channel e241010 and the three-way joint 241009 (under the action of gravity, or under the combined action of gravity and air flow), and then the flexible push rod pushes the radiation source into the particle loading device through the positive top channel 241006 and the three-way joint 241009 to achieve loading.

[0137] When the particle activity detector 241017 detects that the radiation source does not meet the requirements, the second commutation component 241007 drives the return top channel 241005 to communicate with the radiation source control material channel 241018, so that the non-conforming radiation source falls into the waste funnel 2410201 in the return top channel 241005 to complete the recovery of particles. The relevant principle of the waste funnel 2410201 is the same as that of Embodiment 3 and will not be elaborated here.

[0138] After loading is completed, when there is still remaining radiation source in the combing output channel 241015 and the radiation source control component 241016, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the return top channel 241005, and the second commutation component 241007 drives the return top channel 241005 to communicate with the radiation source control material channel 241018, and drives the flexible push rod into the radiation source control material channel 241018 and the combing output channel 241015 to push the radiation source in the combing output channel 241015 upward into the horn feeder of the radiation source combing component 241014 for recovery and storage.

[0139] Or after loading is completed, a new waste funnel 2410201 can be replaced. The second commutation component 241007 drives the radiation source control material channel 241018 to communicate with the return top channel 241005, and discharges all the remaining radiation sources in the radiation source combing component 241014, the combing output channel 241015 and the radiation source control component 241016 into the new waste funnel 2410201 to be distinguished from the waste funnel 2410201 containing non-conforming radiation sources to achieve classified recovery.

[0140] Embodiment 5

[0141] This embodiment refers to the working principles of Embodiment 1 and Embodiment 2, and the difference from Embodiment 2 is that:

[0142] As Figure 23, a particle recovery channel 241019 and a particle recovery barrel 241020 are arranged below the second commutation component 241007.

[0143] It further includes a tee joint 241009 and a channel e241010. The first branch of the tee joint 241009 is connected to the second commutation component 241007 through the channel e241010. The second branch of the tee joint 241009 is connected to the positive top channel 241006. The main path of the tee joint 241009 is connected to the radiation source loading channel 241011.

[0144] The drive motor of the second commutation component 241007 adopts a servo motor. The servo motor can accurately control the moving distance and can control the radiation source control material channel 241018 to communicate with the channel e241010, the return top channel 241005 and the recovery channel 241019 respectively.

[0145] During the radiation source loading process, when the particle activity detector 241017 detects that the radiation source meets the requirements, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the positive top channel 241006, and the second commutation component 241007 drives the radiation source control material channel 241018 to communicate with the channel e241010, so that the radiation source in the radiation source control material channel 241018 is introduced into the radiation source loading channel 241011 through the channel e241010 and the tee joint 241009 (under the action of gravity, or under the combined action of gravity and air flow), and then the flexible push rod pushes the radiation source into the particle loading device through the positive top channel 241006 and the tee joint 241009 to achieve loading.

[0146] When the particle activity detector 241017 detects that the radiation source does not meet the requirements, the second commutation component 241007 drives the radiation source control material channel 241018 to communicate with the particle recovery channel 241019, so that the non-conforming radiation source falls into the particle recovery barrel 241020 under the action of gas and / or gravity and vibration to achieve particle recovery.

[0147] After the loading is completed, when there is still remaining radiation source in the radiation source control material component 241016 and the combing output channel 241015, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the return top channel 241005, and the second commutation component 241007 drives the return top channel 241005 to communicate with the radiation source control material channel 241018, and drives the flexible push rod into the radiation source control material channel 241018 and the combing output channel 241015 to push the radiation source in the combing output channel 241015 upward into the horn feeder of the radiation source combing component 241014 for recovery and storage.

[0148] Alternatively, after the loading is completed, a new particle recovery barrel 241020 can be replaced. The second commutation component 241007 drives the radioactive source material control channel 241018 to communicate with the recovery channel 241019, and all the remaining radioactive sources in the radioactive source combing component 241014, the combing output channel 241015 and the radioactive source material control component 241016 are discharged into the new particle recovery barrel 241020, which is distinguished from the particle recovery barrel 241020 containing unqualified radioactive sources, so as to achieve classified recovery;

[0149] If there is a radioactive source blockage in the radioactive source material control component 241106 and / or the combing output channel 241015 at this time, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the back pressure channel 241005, and the second commutation component 241007 drives the back pressure channel 241005 to communicate with the radioactive source material control channel 241018, and drives the flexible push rod to enter the radioactive source material control channel 241018 and the combing output channel 241015 to dredge the radioactive source.

[0150] Embodiment 6

[0151] This embodiment refers to the working principle of Embodiment 2, and the difference from Embodiment 2 is that:

[0152] As Figure 24 , the particle recovery channel 241019 and the particle recovery barrel 241020 are arranged below the second commutation component 241007. The drive motor of the second commutation component 241007 adopts a servo motor, which can accurately control the moving distance. The servo motor can control the radioactive source material control channel 241018 to communicate with the radioactive source loading channel 241011, the back pressure channel 241005 and the recovery channel 241019 respectively.

[0153] During the radioactive source loading process, when the particle activity detector 241017 detects that the radioactive source meets the requirements, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the forward pressure channel 241006, and the second commutation component 241007 drives the radioactive source material control channel 241018 to communicate with the radioactive source loading channel 241011, so that the radioactive source in the radioactive source material control channel 241018 is introduced into the radioactive source loading channel 241011 (under the action of gravity, or under the combined action of gravity and air flow), and then the second commutation component 241007 controls the forward pressure channel 241006 to communicate with the radioactive source loading channel 241011 again, and drives the flexible push rod to push the radioactive source into the particle loading device to achieve loading.

[0154] When the particle activity detector 241017 detects that the radioactive source does not meet the requirements, the second commutation component 241007 drives the radioactive source control material channel 241018 to communicate with the particle recovery channel 241019, so that the radioactive source that does not meet the requirements directly falls into the particle recovery bucket 241020 under the action of gas and / or gravity, realizing the recovery of particles.

[0155] After loading is completed, when there is still a remaining radioactive source in the radioactive source control material component 241016 and the combing output channel 241015, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the return top channel 241005, and the second commutation component 241007 drives the return top channel 241005 to communicate with the radioactive source control material channel 241018, driving the flexible push rod into the radioactive source control material channel 241018 and the combing output channel 241015, and pushing the radioactive source in the combing output channel 241015 upward into the horn feeder of the radioactive source combing component 241014 for recovery and storage.

[0156] Or after loading is completed, a new particle recovery bucket 241020 can be replaced. The second commutation component 241007 drives the radioactive source control material channel 241018 to communicate with the recovery channel 241019, and discharges all the remaining radioactive sources in the radioactive source combing component 241014, the combing output channel 241015 and the radioactive source control material component 241016 into the new particle recovery bucket 241020, distinguishing it from the particle recovery bucket 241020 containing unqualified radioactive sources, and realizing classified recovery;

[0157] If there is a radioactive source blocked in the radioactive source control material component 241106 and / or the combing output channel 241015 at this time, the first commutation component 241004 drives the push rod output channel 241003 to communicate with the return top channel 241005, and the second commutation component 241007 drives the return top channel 241005 to communicate with the radioactive source control material channel 241018, driving the flexible push rod into the radioactive source control material channel 241018 and the combing output channel 241015 to dredge the radioactive source.

[0158] Embodiment 7

[0159] A method for using a magazine automatic loading device with a recovery function includes the following steps:

[0160] The radioactive source feeding mechanism sends one or more radioactive sources to the radioactive source activity detector. The radioactive source activity detector detects the activity of the radioactive source. When the radioactive source activity detector detects that the activity of the radioactive source meets the requirements, the output end of the radioactive source feeding mechanism is switched to be communicated with the input end of the radioactive source loading channel through the commutation mechanism. The radioactive source activity detector releases the detected radioactive source, and the radioactive source enters the radioactive source loading channel. The radioactive source driving mechanism drives the push rod to send the radioactive source that meets the requirements into the magazine loading mechanism along the radioactive source loading channel, realizing the magazine loading action;

[0161] When the radioactive source activity detector detects that the activity of the radioactive source does not meet the requirements, the second commutation component switches the recovery channel to be communicated with the output end of the radioactive source feeding mechanism, so that the radioactive source that does not meet the requirements enters the recovery bucket along the recovery channel under the action of gravity and / or gas thrust.

[0162] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0163] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A magazine automatic loading device with a recycling function, characterized in that Comprising: A magazine loading mechanism for sequentially loading radioactive sources into storage slots inside the magazine; A radioactive source driving mechanism, where the radioactive source driving mechanism drives the radioactive source to move forward along the radioactive source loading channel through a push rod or air flow until the radioactive source enters the magazine loading mechanism; A radioactive source feeding mechanism for outputting a number of radioactive sources from the output end of the radioactive source feeding mechanism; A commutation mechanism for switching the connection between the output end of the radioactive source feeding mechanism and the input end of the radioactive source loading channel. The radioactive source driving mechanism drives the radioactive source to be loaded along the radioactive source loading channel into the magazine loading mechanism to achieve the magazine loading action; the commutation mechanism is connected to a radioactive source recovery container, and by switching the connection between the output end of the radioactive source feeding mechanism and the radioactive source recovery container through the commutation mechanism, the radioactive source feeding mechanism outputs the radioactive sources that do not need to be loaded into the radioactive source recovery container.

2. The automatic magazine loading device with a recycling function according to claim 1, characterized in that, The commutation mechanism includes a second commutation component. The radioactive source driving mechanism is a push rod driving mechanism or a blowing driving mechanism. The output end of the radioactive source driving mechanism is connected to one end of the driving output channel, the other end of the driving output channel is connected to the second commutation component, one end of the radioactive source loading channel is connected to the second commutation component, the other end of the radioactive source loading channel is connected to the magazine loading mechanism, the output end of the radioactive source feeding mechanism is connected to the second commutation component, and the radioactive source recovery container is connected to the second commutation component; By switching the connection state of the channels through the second commutation component, the radioactive source driving mechanism drives the push rod or air flow to push the radioactive source to be loaded into the magazine loading mechanism, or the radioactive source feeding mechanism outputs the radioactive sources that do not need to be loaded into the radioactive source recovery container.

3. The automatic magazine loading device with a recycling function according to claim 2, characterized in that, The second commutation component includes a second commutation seat A and a second commutation seat B. A number of groups of second alignment holes are provided on the second commutation seat A. The first group of second alignment holes is connected to the output end of the radioactive source feeding mechanism, the driving output channel is connected to the second group of second alignment holes, and a second commutation hole is provided on the second commutation seat B, where the second commutation hole is connected to the input end of the radioactive source loading channel. The second commutation component drives the commutation seat A to move on the commutation seat B through the commutation driving mechanism thereon to control the docking of the alignment holes with different commutation holes to achieve switching of the connection state of the channels.

4. The automatic magazine loading device with a recycling function according to claim 1, characterized in that, It also includes a radioactive source activity detector. When the radioactive source activity detector is set at the output end of the radioactive source feeding mechanism, the radioactive source activity detector is provided with a detection and material control mechanism, and the detection and material control mechanism can control the passage or blockage of the radioactive source, and the radioactive source activity detector can detect the activity of the blocked radioactive source; When the activity detection is unqualified, the connection between the output end of the radioactive source feeding mechanism and the radioactive source recovery container is switched through the commutation mechanism, and the radioactive source feeding mechanism outputs the unqualified radioactive sources into the radioactive source recovery container; when the activity detection is qualified, the connection between the output end of the radioactive source feeding mechanism and the input end of the radioactive source loading channel is switched through the commutation mechanism to output the qualified radioactive sources into the radioactive source loading channel.

5. The automatic magazine loading device with a recycling function according to claim 3, characterized in that, It further includes a first commutation component, which includes a first commutation seat A and a first commutation seat B. A first alignment hole is provided on the first commutation seat A, and the first alignment hole is communicated with the driving output channel. The first commutation seat B is provided with two groups of first commutation holes, and one ends of a positive pushing channel and a return pushing channel are respectively connected to the two groups of first commutation holes. The other end of the positive pushing channel is communicated with a second group of second alignment holes, and a second group of second commutation holes are provided on the second commutation seat B. The other end of the return pushing channel is communicated with the second group of second commutation holes; The radioactive source recovery container is a recovery bucket. The second commutation seat A is further provided with a second alignment hole, and a recovery channel is communicated with the second alignment hole. The recovery channel is communicated with the recovery bucket. When the radioactive source activity detector detects that the radioactive source does not meet the requirements, the second commutation component first switches the return pushing channel to be communicated with the output end of the radioactive source feeding mechanism, so that the non-conforming radioactive source falls into the return pushing channel. Then the second commutation component switches the return pushing channel to be communicated with the recovery channel, and the radioactive source driving mechanism drives the push rod or air flow to push the non-conforming radioactive source into the recovery bucket; Alternatively, the radioactive source recovery container is a waste funnel, and the waste funnel is directly arranged in the middle of the return pushing channel. When the radioactive source activity detector detects that the radioactive source does not meet the requirements, the second commutation component switches the return pushing channel to be communicated with the output end of the radioactive source feeding mechanism, so that the non-conforming radioactive source falls into the return pushing channel and enters the waste funnel along the return pushing channel under the action of gravity and / or gas thrust.

6. The automatic magazine loading device with a recycling function according to claim 3, characterized in that, The radioactive source recovery container is a recovery bucket. The second commutation seat B is further provided with a second commutation hole, and a recovery channel is communicated with the second commutation hole. The recovery channel is communicated with the recovery bucket. When the radioactive source activity detector detects that the radioactive source does not meet the requirements, the second commutation component directly switches the recovery channel to be communicated with the output end of the radioactive source feeding mechanism, so that the non-conforming radioactive source falls into the recovery bucket along the recovery channel under the action of gravity and / or gas thrust.

7. The automatic magazine loading device with a recycling function according to claim 1, characterized in that, The radioactive source feeding mechanism includes a radioactive source combing component and a radioactive source material control component. The radioactive source combing component combs the scattered radioactive sources and then inputs them into the radioactive source material control component one by one. The radioactive source material control component controls a specified number of radioactive sources to be output into the radioactive source loading channel. The radioactive source combing component and the radioactive source material control component are connected through a combing output channel. The output channel of the radioactive source feeding mechanism is the radioactive source material control channel of the radioactive source material control component, and the radioactive source material control component and the commutation mechanism are connected through the radioactive source material control channel.

8. A magazine automatic loading device with a recycling function according to claim 5, characterized in that, A guiding channel extends into the waste funnel from the entrance at the end of the waste funnel close to the first commutation component, and a funnel surface is provided at the exit at the end of the inner cavity of the waste funnel close to the second commutation component.

9. The automatic magazine loading device with a recycling function according to claim 7, characterized in that, The radioactive source sorting component is provided with a first mounting seat for installing the radioactive source feeding container. The magazine loading mechanism is provided with a magazine mounting seat for installing the magazine, and also a second mounting seat for installing the radioactive source recycling container. The structures of the first mounting seat and the second mounting seat are exactly the same, which is convenient for the interchangeable installation of the radioactive source feeding container and the radioactive source recycling container. There are electrical plug interfaces on the first mounting seat, the magazine mounting seat and the second mounting seat, which are used for burning the chip to record the loading and recycling conditions of the radioactive source.

10. A method for using a magazine automatic loading device with a recycling function, characterized in that, It includes the following steps: The radioactive source feeding mechanism sends one or more radioactive sources to the radioactive source activity detector. The radioactive source activity detector detects the activity of the radioactive source. When the radioactive source activity detector detects that the activity of the radioactive source meets the requirements, the output end of the radioactive source feeding mechanism is switched to be communicated with the input end of the radioactive source loading channel through the commutation mechanism. The radioactive source activity detector releases the detected radioactive source, and the radioactive source enters the radioactive source loading channel. The radioactive source driving mechanism drives the push rod to send the qualified radioactive source along the radioactive source loading channel into the magazine loading mechanism to complete the magazine loading operation. When the radioactive source activity detector detects that the activity of the radioactive source does not meet the requirements, the second commutation component switches the recycling channel to be communicated with the output end of the radioactive source feeding mechanism, so that the unqualified radioactive source enters the recycling bucket along the recycling channel under the action of gravity and / or gas thrust.

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